/* roulang page: index */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #121820;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-primary: #F2F5F7;
            --text-secondary: #B8C4CE;
            --text-muted: #7E8C9A;
            --text-inverse: #FFFFFF;
            --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
            --gradient-accent: linear-gradient(135deg, #A855F7 0%, #22D3EE 100%);
            --gradient-warm: linear-gradient(135deg, #FB923C 0%, #F59E0B 100%);
            --color-purple: #7C3AED;
            --color-cyan: #06B6D4;
            --color-green: #A3E635;
            --color-orange: #FB923C;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-full: 50px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.3);
            --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
            --section-spacing: 88px;
            --section-spacing-mobile: 52px;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 15% 8%, rgba(124, 58, 237, 0.12) 0%, transparent 42%), radial-gradient(circle at 88% 22%, rgba(6, 182, 212, 0.08) 0%, transparent 35%), radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.04) 0%, transparent 40%);
            background-attachment: fixed;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-cyan);
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease;
        }

        a:hover {
            color: #34D399;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
        }

        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .section-padding-xs {
            padding-top: 32px;
            padding-bottom: 32px;
        }

        .section-divider {
            border-top: 1px solid var(--border-subtle);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.12);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }

        .section-label .icon {
            font-size: 0.85rem;
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1.02rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .text-muted-strong {
            color: var(--text-muted);
        }

        .gradient-text {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .fw-700 {
            font-weight: 700;
        }
        .fw-800 {
            font-weight: 800;
        }

        .font-mono {
            font-family: var(--font-mono);
        }

        .btn-ek {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            white-space: nowrap;
            letter-spacing: 0.02em;
            font-family: var(--font-sans);
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-ek-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
        }

        .btn-ek-primary:hover {
            background: linear-gradient(135deg, #8B5CF6 0%, #22D3EE 100%);
            color: #fff;
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 32px rgba(124, 58, 237, 0.5);
        }

        .btn-ek-primary:active {
            transform: scale(0.98);
            box-shadow: 0 2px 12px rgba(124, 58, 237, 0.3);
        }

        .btn-ek-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
            backdrop-filter: blur(8px);
        }

        .btn-ek-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.28);
            transform: translateY(-2px);
        }

        .btn-ek-secondary:active {
            transform: scale(0.98);
        }

        .btn-ek-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }

        .btn-ek-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }

        .btn-ek-outline-light {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
        }

        .btn-ek-outline-light:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.35);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-ek-link {
            background: transparent;
            color: var(--color-cyan);
            padding: 8px 16px;
            font-weight: 600;
            border: none;
        }

        .btn-ek-link:hover {
            color: #34D399;
            transform: translateX(2px);
        }

        .card-ek {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
            height: 100%;
        }

        .card-ek::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-main);
            opacity: 0;
            transition: opacity 0.35s ease;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .card-ek:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 255, 255, 0.18);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }

        .card-ek:hover::before {
            opacity: 1;
        }

        .card-ek-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .card-ek-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .card-ek-icon {
            font-size: 1.8rem;
            color: var(--color-cyan);
            margin-bottom: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: rgba(6, 182, 212, 0.1);
            border: 1px solid rgba(6, 182, 212, 0.2);
        }

        .badge-ek {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            white-space: nowrap;
            font-family: var(--font-mono);
        }

        .badge-ek-accent {
            background: rgba(163, 230, 53, 0.12);
            border-color: rgba(163, 230, 53, 0.25);
            color: var(--color-green);
        }

        .badge-ek-purple {
            background: rgba(124, 58, 237, 0.15);
            border-color: rgba(124, 58, 237, 0.3);
            color: #C4B5FD;
        }

        .badge-ek-orange {
            background: rgba(251, 146, 60, 0.12);
            border-color: rgba(251, 146, 60, 0.3);
            color: var(--color-orange);
        }

        .badge-ek-cyan {
            background: rgba(6, 182, 212, 0.12);
            border-color: rgba(6, 182, 212, 0.25);
            color: var(--color-cyan);
        }

        .data-badge {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            transition: all 0.3s ease;
            min-width: 150px;
            flex-shrink: 0;
        }

        .data-badge:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .data-badge .number {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--text-primary);
            font-family: var(--font-mono);
            letter-spacing: -0.03em;
            line-height: 1.2;
        }

        .data-badge .unit {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
            line-height: 1.3;
        }

        .data-badge .number-gradient {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .data-badge .number-warm {
            background: var(--gradient-warm);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .data-badge .number-green {
            color: var(--color-green);
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(13, 17, 23, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0;
            transition: background 0.35s ease, box-shadow 0.35s ease;
        }

        .site-header.scrolled {
            background: rgba(13, 17, 23, 0.96);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .navbar-ek {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            min-width: 0;
        }

        .nav-group-left {
            justify-content: flex-end;
        }

        .nav-group-right {
            justify-content: flex-start;
        }

        .navbar-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-primary);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: -0.02em;
            transition: opacity 0.25s ease;
            padding: 0 4px;
        }

        .navbar-logo:hover {
            opacity: 0.85;
            color: var(--text-primary);
        }

        .navbar-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: var(--gradient-main);
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 2px 12px rgba(124, 58, 237, 0.45);
        }

        .nav-link-ek {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 14px;
            border-radius: var(--radius-full);
            transition: all 0.25s ease;
            white-space: nowrap;
            text-decoration: none;
            position: relative;
            letter-spacing: 0.01em;
        }

        .nav-link-ek:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link-ek.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.35);
        }

        .nav-link-ek.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--gradient-main);
            border-radius: 2px;
        }

        .navbar-toggler-ek {
            display: none;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            padding: 0;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-strong);
            background: rgba(255, 255, 255, 0.04);
            cursor: pointer;
            transition: all 0.25s ease;
            flex-shrink: 0;
        }

        .navbar-toggler-ek:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .navbar-toggler-ek .toggler-line {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            margin: 3px auto;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .navbar-toggler-ek[aria-expanded='true'] .toggler-line:nth-child(1) {
            transform: translateY(8px) rotate(45deg);
        }
        .navbar-toggler-ek[aria-expanded='true'] .toggler-line:nth-child(2) {
            opacity: 0;
        }
        .navbar-toggler-ek[aria-expanded='true'] .toggler-line:nth-child(3) {
            transform: translateY(-8px) rotate(-45deg);
        }

        .mobile-menu-ek {
            display: none;
            background: rgba(13, 17, 23, 0.98);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 24px 24px;
            animation: fadeSlideDown 0.3s ease;
        }

        .mobile-menu-ek.show {
            display: block;
        }

        .mobile-menu-ek .nav-link-ek {
            display: block;
            padding: 12px 16px;
            font-size: 0.95rem;
            border-radius: var(--radius-sm);
        }

        @keyframes fadeSlideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Hero */
        .hero-section {
            position: relative;
            padding: 72px 0 80px;
            background:
                radial-gradient(ellipse at 20% 20%, rgba(124, 58, 237, 0.22) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 10%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
                linear-gradient(180deg, rgba(13, 17, 23, 0.95) 0%, rgba(13, 17, 23, 0.98) 100%);
            overflow: hidden;
            border-bottom: 1px solid var(--border-subtle);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 3.1rem;
            font-weight: 800;
            line-height: 1.22;
            color: var(--text-primary);
            letter-spacing: -0.025em;
            margin-bottom: 20px;
        }

        .hero-subtitle {
            font-size: 1.08rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .hero-visual-wrap {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 280px;
        }

        .hero-visual {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-strong);
            box-shadow: 0 24px 64px rgba(0, 0, 0, 0.55), 0 0 40px rgba(124, 58, 237, 0.18);
            width: 100%;
            max-width: 520px;
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        .hero-visual::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.15) 0%, rgba(13, 17, 23, 0.65) 100%);
            pointer-events: none;
        }

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 24px;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .hero-before-after {
            display: flex;
            gap: 16px;
            margin-top: 16px;
            flex-wrap: wrap;
        }

        .hero-ba-card {
            flex: 1;
            min-width: 200px;
            padding: 16px 20px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .hero-ba-card .ba-label {
            font-weight: 700;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 6px;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .hero-ba-card.is-after {
            border-color: rgba(6, 182, 212, 0.35);
            background: rgba(6, 182, 212, 0.07);
        }

        .hero-ba-card.is-after .ba-label {
            color: var(--color-cyan);
        }

        /* Data badge strip */
        .data-strip {
            padding: 28px 0 8px;
            border-bottom: 1px solid var(--border-subtle);
            background: rgba(13, 17, 23, 0.7);
            backdrop-filter: blur(10px);
        }

        .data-strip-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: center;
        }

        /* Section styles */
        .bg-alt-slight {
            background: rgba(18, 24, 32, 0.6);
        }

        .bg-gradient-subtle {
            background: linear-gradient(180deg, rgba(124, 58, 237, 0.05) 0%, transparent 50%);
        }

        /* Feature grid */
        .feature-grid .card-ek {
            min-height: 200px;
        }

        /* Scenario cards */
        .scenario-card {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            transition: all 0.3s ease;
            height: 100%;
        }

        .scenario-card:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .scenario-card .scenario-icon {
            font-size: 1.5rem;
            color: var(--color-cyan);
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-md);
            background: rgba(6, 182, 212, 0.1);
            border: 1px solid rgba(6, 182, 212, 0.2);
        }

        .scenario-card .scenario-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .scenario-card .scenario-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Demo cards */
        .demo-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-strong);
            background: rgba(13, 17, 23, 0.9);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            height: 100%;
        }

        .demo-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-card-hover);
        }

        .demo-card .demo-header {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 14px 18px;
            background: rgba(255, 255, 255, 0.03);
            border-bottom: 1px solid var(--border-subtle);
        }

        .demo-card .demo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        .demo-card .demo-title-bar {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
            flex: 1;
            text-align: center;
        }

        .demo-card .demo-body {
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 180px;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, rgba(6, 182, 212, 0.06) 100%);
        }

        .demo-card .demo-body img {
            max-height: 200px;
            object-fit: cover;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .demo-card .demo-footer {
            padding: 14px 18px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 8px;
        }

        /* case cards */
        .case-card {
            padding: 28px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            transition: all 0.35s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .case-card::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -25%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .case-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.18);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .case-card .case-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: rgba(124, 58, 237, 0.15);
            color: #C4B5FD;
            margin-bottom: 12px;
            font-family: var(--font-mono);
        }

        .case-card .case-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .case-card .case-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Brand story */
        .brand-story {
            padding: 40px 44px;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(6, 182, 212, 0.07) 50%, rgba(163, 230, 53, 0.04) 100%);
            border: 1px solid rgba(255, 255, 255, 0.1);
            position: relative;
            overflow: hidden;
        }

        .brand-story::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .brand-story .brand-story-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            position: relative;
            z-index: 2;
        }

        .brand-story .brand-story-text {
            font-size: 0.98rem;
            color: var(--text-secondary);
            line-height: 1.9;
            position: relative;
            z-index: 2;
            margin-bottom: 0;
        }

        /* Pricing */
        .pricing-card {
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            transition: all 0.35s ease;
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .pricing-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.18);
            transform: translateY(-5px);
            box-shadow: var(--shadow-card);
        }

        .pricing-card.featured {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.16) 0%, rgba(6, 182, 212, 0.12) 100%);
            border-color: rgba(124, 58, 237, 0.4);
            box-shadow: 0 8px 32px rgba(124, 58, 237, 0.28);
        }

        .pricing-card .plan-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .pricing-card .plan-price {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-primary);
            font-family: var(--font-mono);
            letter-spacing: -0.04em;
            margin-bottom: 4px;
        }

        .pricing-card .plan-price .currency {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-right: 2px;
        }

        .pricing-card .plan-period {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .pricing-card .plan-features {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .pricing-card .plan-features li {
            font-size: 0.88rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .pricing-card .plan-features li i {
            color: var(--color-green);
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        .pricing-card .featured-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            font-size: 0.72rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: var(--gradient-main);
            color: #fff;
            font-family: var(--font-mono);
        }

        /* Reviews */
        .review-card {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .review-card:hover {
            background: rgba(255, 255, 255, 0.07);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .review-card .review-stars {
            color: #FBBF24;
            font-size: 0.9rem;
            letter-spacing: 2px;
        }

        .review-card .review-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 0;
        }

        .review-card .review-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-card .review-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--gradient-main);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: #fff;
            flex-shrink: 0;
        }

        .review-card .review-name {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-primary);
        }

        .review-card .review-role {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* News list */
        .news-item {
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 20px 24px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            transition: all 0.3s ease;
            height: 100%;
        }

        .news-item:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .news-item .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .news-item .news-date {
            color: var(--color-cyan);
            font-weight: 600;
        }

        .news-item .news-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
            margin-bottom: 0;
        }

        .news-item .news-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .news-item .news-link {
            align-self: flex-start;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-cyan);
            transition: color 0.2s ease;
        }

        .news-item .news-link:hover {
            color: #34D399;
        }

        /* FAQ */
        .faq-accordion .accordion-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-accordion .accordion-item:hover {
            border-color: rgba(255, 255, 255, 0.18);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 18px 24px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
            transition: all 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(124, 58, 237, 0.08);
            color: var(--text-primary);
            box-shadow: none;
            border-left: 3px solid var(--color-cyan);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--color-cyan);
            outline-offset: -2px;
        }

        .faq-accordion .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--color-cyan);
        }

        .faq-accordion .accordion-body {
            padding: 16px 24px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            background: rgba(0, 0, 0, 0.15);
            border-top: 1px solid var(--border-subtle);
        }

        /* CTA section */
        .cta-section {
            border-radius: var(--radius-xl);
            padding: 52px 44px;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.25) 0%, rgba(6, 182, 212, 0.2) 50%, rgba(163, 230, 53, 0.08) 100%);
            border: 1px solid rgba(255, 255, 255, 0.12);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 32px 32px;
            pointer-events: none;
        }

        .cta-section .cta-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
            letter-spacing: -0.02em;
        }

        .cta-section .cta-text {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 24px;
            position: relative;
            z-index: 2;
        }

        .cta-section .cta-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 20px;
            position: relative;
            z-index: 2;
        }

        .cta-section .trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.7);
        }

        .cta-section .trust-item i {
            color: var(--color-green);
            font-size: 0.9rem;
        }

        /* Footer */
        .site-footer {
            background: rgba(13, 17, 23, 0.95);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 0;
            margin-top: 24px;
        }

        .footer-brand-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
            text-transform: uppercase;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--color-cyan);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding: 20px 0;
            margin-top: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
        }

        .footer-bottom .copyright {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom .footer-tech-links {
            display: flex;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom .footer-tech-links a {
            color: var(--text-muted);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .footer-bottom .footer-tech-links a:hover {
            color: var(--color-cyan);
        }

        /* Misc */
        .img-radius {
            border-radius: var(--radius-md);
            border: 1px solid var(--border-subtle);
        }

        .divider-light {
            border: none;
            border-top: 1px solid var(--border-subtle);
            margin: 0;
        }

        .list-unstyled-ek {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border-width: 0;
        }

        /* Responsive */
        @media (max-width: 1199.98px) {
            .hero-title {
                font-size: 2.6rem;
            }
            .section-title {
                font-size: 1.85rem;
            }
        }

        @media (max-width: 991.98px) {
            .section-padding {
                padding-top: 64px;
                padding-bottom: 64px;
            }

            .hero-title {
                font-size: 2.2rem;
            }

            .hero-section {
                padding: 56px 0 64px;
            }

            .nav-group {
                display: none;
            }

            .navbar-toggler-ek {
                display: inline-flex;
            }

            .navbar-ek {
                justify-content: space-between;
                gap: 12px;
            }

            .navbar-logo {
                font-size: 1.2rem;
            }

            .navbar-logo .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.95rem;
            }

            .brand-story {
                padding: 32px 28px;
            }

            .brand-story .brand-story-title {
                font-size: 1.3rem;
            }

            .cta-section {
                padding: 36px 28px;
            }

            .cta-section .cta-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 767.98px) {
            .section-padding {
                padding-top: 48px;
                padding-bottom: 48px;
            }

            .section-title {
                font-size: 1.55rem;
            }

            .section-desc {
                font-size: 0.92rem;
            }

            .hero-title {
                font-size: 1.8rem;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .hero-section {
                padding: 40px 0 48px;
            }

            .hero-visual-wrap {
                min-height: 200px;
                margin-top: 28px;
            }

            .hero-visual {
                max-width: 100%;
            }

            .card-ek {
                padding: 20px;
            }

            .pricing-card {
                padding: 24px 20px;
            }

            .pricing-card .plan-price {
                font-size: 2.1rem;
            }

            .review-card {
                padding: 18px;
            }

            .demo-card .demo-body {
                min-height: 140px;
            }

            .data-badge {
                padding: 12px 14px;
                min-width: 120px;
            }

            .data-badge .number {
                font-size: 1.3rem;
            }

            .cta-section {
                padding: 28px 20px;
            }

            .cta-section .cta-title {
                font-size: 1.35rem;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .btn-ek {
                padding: 12px 22px;
                font-size: 0.88rem;
                width: 100%;
            }

            .hero-cta-row .btn-ek {
                width: 100%;
            }

            .btn-ek-lg {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 519.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-title {
                font-size: 1.55rem;
                line-height: 1.3;
            }

            .hero-section {
                padding: 32px 0 40px;
            }

            .section-padding {
                padding-top: 40px;
                padding-bottom: 40px;
            }

            .section-title {
                font-size: 1.35rem;
            }

            .data-strip-inner {
                gap: 8px;
            }

            .data-badge {
                min-width: 100px;
                padding: 10px 12px;
                gap: 8px;
            }

            .data-badge .number {
                font-size: 1.1rem;
            }

            .data-badge .unit {
                font-size: 0.7rem;
            }

            .navbar-logo {
                font-size: 1.05rem;
            }

            .navbar-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }

            .navbar-ek {
                min-height: 58px;
            }

            .news-item {
                padding: 16px 18px;
            }

            .pricing-card .plan-price {
                font-size: 1.8rem;
            }

            .footer-bottom .footer-tech-links {
                flex-direction: column;
                gap: 6px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #121820;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-primary: #F2F5F7;
            --text-secondary: #B8C4CE;
            --text-muted: #7E8C9A;
            --text-inverse: #FFFFFF;
            --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
            --gradient-accent: linear-gradient(135deg, #A855F7 0%, #22D3EE 100%);
            --gradient-warm: linear-gradient(135deg, #FB923C 0%, #F59E0B 100%);
            --color-purple: #7C3AED;
            --color-cyan: #06B6D4;
            --color-green: #A3E635;
            --color-orange: #FB923C;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-full: 50px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.3);
            --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
            --section-spacing: 80px;
            --section-spacing-mobile: 48px;
            --container-max: 1200px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image:
                radial-gradient(circle at 10% 15%, rgba(124, 58, 237, 0.07) 0%, transparent 40%),
                radial-gradient(circle at 90% 25%, rgba(6, 182, 212, 0.05) 0%, transparent 35%),
                radial-gradient(circle at 50% 90%, rgba(163, 230, 53, 0.03) 0%, transparent 45%);
            background-attachment: fixed;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-cyan);
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease;
        }

        a:hover {
            color: #34D399;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
        }

        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .section-padding-xs {
            padding-top: 28px;
            padding-bottom: 28px;
        }

        .section-divider {
            border-top: 1px solid var(--border-subtle);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.12);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }

        .section-label .icon {
            font-size: 0.85rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .text-muted-strong {
            color: var(--text-muted);
        }

        .btn-ek {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.92rem;
            padding: 13px 28px;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            white-space: nowrap;
            letter-spacing: 0.02em;
            font-family: var(--font-sans);
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-ek-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
        }

        .btn-ek-primary:hover {
            background: var(--gradient-accent);
            color: #fff;
            box-shadow: 0 8px 32px rgba(124, 58, 237, 0.5);
            transform: translateY(-2px) scale(1.02);
        }

        .btn-ek-primary:active {
            transform: scale(0.98);
        }

        .btn-ek-outline {
            background: transparent;
            border: 1px solid var(--border-strong);
            color: var(--text-primary);
        }

        .btn-ek-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--color-cyan);
            color: var(--text-primary);
            transform: translateY(-2px);
        }

        .btn-ek-outline:active {
            transform: scale(0.98);
        }

        .btn-ek-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }

        .btn-ek-lg {
            padding: 16px 36px;
            font-size: 1rem;
        }

        /* Header / Nav */
        .site-header {
            background: rgba(13, 17, 23, 0.9);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 999;
            padding: 0;
        }

        .navbar-ek {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            min-height: 68px;
            gap: 16px;
        }

        .navbar-toggler-ek {
            background: transparent;
            border: 1px solid var(--border-strong);
            border-radius: 10px;
            width: 44px;
            height: 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .navbar-toggler-ek:hover {
            border-color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.1);
        }

        .toggler-line {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .navbar-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .navbar-logo:hover {
            color: var(--text-primary);
            text-decoration: none;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient-main);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }

        .nav-group-left {
            justify-content: flex-end;
            margin-right: 12px;
        }

        .nav-group-right {
            justify-content: flex-start;
            margin-left: 12px;
        }

        .nav-link-ek {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            border-radius: var(--radius-full);
            text-decoration: none;
            transition: all 0.25s ease;
            position: relative;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-link-ek::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--gradient-main);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .nav-link-ek:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-link-ek:hover::after {
            width: 60%;
        }

        .nav-link-ek.active {
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.1);
        }

        .nav-link-ek.active::after {
            width: 60%;
            background: var(--gradient-accent);
        }

        .mobile-menu-ek {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 12px 24px;
        }

        .mobile-menu-ek .nav-link-ek {
            display: flex;
            width: 100%;
            padding: 14px 16px;
            font-size: 1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
        }

        .mobile-menu-ek .nav-link-ek:last-child {
            border-bottom: none;
        }

        .mobile-menu-ek .nav-link-ek::after {
            display: none;
        }

        /* Breadcrumb */
        .breadcrumb-ek {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .breadcrumb-ek li {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb-ek a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        .breadcrumb-ek a:hover {
            color: var(--color-cyan);
        }

        .breadcrumb-ek .separator {
            color: var(--text-muted);
            opacity: 0.5;
            font-size: 0.75rem;
        }

        .breadcrumb-ek .current {
            color: var(--text-secondary);
            font-weight: 600;
        }

        /* Category header compact */
        .category-header {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 32px 36px;
            margin-bottom: 28px;
            position: relative;
            overflow: hidden;
        }

        .category-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient-main);
            border-radius: 3px 3px 0 0;
        }

        .category-header::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-header .cat-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
            position: relative;
            z-index: 1;
        }

        .category-header .cat-desc {
            font-size: 0.98rem;
            color: var(--text-secondary);
            max-width: 800px;
            line-height: 1.85;
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }

        .category-header .cat-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 16px;
            position: relative;
            z-index: 1;
        }

        .cat-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .cat-meta .meta-item i {
            color: var(--color-cyan);
            font-size: 0.75rem;
        }

        /* Filter toolbar */
        .filter-toolbar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            margin-bottom: 28px;
        }

        .filter-toolbar .filter-label {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            font-family: var(--font-mono);
            margin-right: 4px;
        }

        .filter-toolbar .form-select-ek {
            background: var(--bg-secondary);
            border: 1px solid var(--border-strong);
            border-radius: 10px;
            color: var(--text-primary);
            padding: 8px 32px 8px 14px;
            font-size: 0.85rem;
            font-family: var(--font-sans);
            cursor: pointer;
            transition: all 0.25s ease;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%237E8C9A' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            min-width: 140px;
        }

        .filter-toolbar .form-select-ek:focus {
            border-color: var(--color-cyan);
            outline: none;
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
        }

        .filter-toolbar .btn-filter {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            border-radius: 10px;
            color: var(--text-secondary);
            padding: 8px 18px;
            font-size: 0.8rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .filter-toolbar .btn-filter:hover {
            background: rgba(6, 182, 212, 0.1);
            border-color: var(--color-cyan);
            color: var(--text-primary);
        }

        .filter-toolbar .btn-filter.active {
            background: rgba(6, 182, 212, 0.15);
            border-color: var(--color-cyan);
            color: var(--color-cyan);
        }

        /* Guide cards */
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .guide-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(124, 58, 237, 0.35);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }

        .guide-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }

        .guide-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .guide-card:hover .card-img-wrap img {
            transform: scale(1.05);
        }

        .guide-card .card-img-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(13, 17, 23, 0.6) 100%);
            pointer-events: none;
        }

        .guide-card .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(13, 17, 23, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-full);
            padding: 4px 12px;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--color-cyan);
            font-family: var(--font-mono);
            letter-spacing: 0.04em;
            z-index: 1;
        }

        .guide-card .card-body-ek {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 10px;
        }

        .guide-card .card-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
            letter-spacing: 0.03em;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .guide-card .card-date i {
            color: var(--color-orange);
            font-size: 0.7rem;
        }

        .guide-card .card-title-ek {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.45;
            margin: 0;
            letter-spacing: -0.01em;
        }

        .guide-card .card-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }

        .guide-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-cyan);
            text-decoration: none;
            transition: all 0.25s ease;
            margin-top: auto;
        }

        .guide-card .card-link:hover {
            color: #34D399;
            gap: 12px;
        }

        .guide-card .card-link i {
            font-size: 0.75rem;
            transition: transform 0.25s ease;
        }

        .guide-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* Data badge */
        .data-badge-ek {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 22px;
            transition: all 0.3s ease;
        }

        .data-badge-ek:hover {
            background: var(--bg-card-hover);
            border-color: rgba(6, 182, 212, 0.3);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card);
        }

        .data-badge-ek .badge-number {
            font-family: var(--font-mono);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .data-badge-ek .badge-unit {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .data-badge-ek .badge-label {
            font-size: 0.8rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .data-badge-ek .badge-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .data-badge-ek .badge-icon.purple {
            background: rgba(124, 58, 237, 0.2);
            color: #A78BFA;
        }

        .data-badge-ek .badge-icon.cyan {
            background: rgba(6, 182, 212, 0.2);
            color: #22D3EE;
        }

        .data-badge-ek .badge-icon.orange {
            background: rgba(251, 146, 60, 0.2);
            color: #FB923C;
        }

        .data-badge-ek .badge-icon.green {
            background: rgba(163, 230, 53, 0.2);
            color: #A3E635;
        }

        /* Hot topics / tags */
        .topic-tag-ek {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            padding: 8px 18px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.25s ease;
            cursor: pointer;
        }

        .topic-tag-ek:hover {
            background: rgba(6, 182, 212, 0.1);
            border-color: var(--color-cyan);
            color: var(--color-cyan);
            text-decoration: none;
        }

        .topic-tag-ek i {
            font-size: 0.7rem;
            opacity: 0.7;
        }

        /* Hot topic card */
        .hot-topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            align-items: flex-start;
            gap: 12px;
        }

        .hot-topic-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(163, 230, 53, 0.3);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }

        .hot-topic-card .rank {
            font-family: var(--font-mono);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-orange);
            line-height: 1.2;
            flex-shrink: 0;
            width: 32px;
        }

        .hot-topic-card .content h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 4px;
            line-height: 1.45;
        }

        .hot-topic-card .content p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            position: relative;
            overflow: hidden;
        }

        .subscribe-cta::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-cta::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-cta h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta .form-control-ek {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            padding: 12px 16px;
            font-size: 0.9rem;
            transition: all 0.25s ease;
            width: 100%;
        }

        .subscribe-cta .form-control-ek::placeholder {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .subscribe-cta .form-control-ek:focus {
            border-color: var(--color-cyan);
            outline: none;
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 40px;
        }

        .site-footer .navbar-logo {
            font-size: 1.1rem;
        }

        .footer-brand-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-top: 8px;
        }

        .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 0.88rem;
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-links a:hover {
            color: var(--color-cyan);
        }

        .footer-links a i {
            font-size: 0.6rem;
            opacity: 0.6;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 40px;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }

        .copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .footer-tech-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
        }

        .footer-tech-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        .footer-tech-links a:hover {
            color: var(--color-cyan);
        }

        .footer-tech-links .divider {
            color: var(--text-muted);
            opacity: 0.4;
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-ek {
                flex-wrap: wrap;
                padding: 10px 0;
            }

            .nav-group {
                display: none !important;
            }

            .category-header {
                padding: 24px 20px;
            }

            .category-header .cat-title {
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .section-padding {
                padding-top: var(--section-spacing-mobile);
                padding-bottom: var(--section-spacing-mobile);
            }

            .guide-card .card-body-ek {
                padding: 18px 18px 20px;
            }

            .guide-card .card-title-ek {
                font-size: 1rem;
            }

            .guide-card .card-desc {
                font-size: 0.82rem;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .category-header {
                padding: 20px 16px;
                border-radius: var(--radius-lg);
            }

            .category-header .cat-title {
                font-size: 1.3rem;
            }

            .filter-toolbar {
                padding: 12px 14px;
                gap: 8px;
                border-radius: var(--radius-md);
            }

            .filter-toolbar .form-select-ek {
                min-width: 120px;
                font-size: 0.78rem;
                padding: 6px 28px 6px 10px;
            }

            .filter-toolbar .btn-filter {
                font-size: 0.72rem;
                padding: 6px 12px;
            }

            .guide-card {
                border-radius: var(--radius-md);
            }

            .guide-card .card-img-wrap {
                border-radius: var(--radius-md) var(--radius-md) 0 0;
            }

            .guide-card .card-body-ek {
                padding: 16px 16px 18px;
                gap: 8px;
            }

            .guide-card .card-title-ek {
                font-size: 0.95rem;
            }

            .guide-card .card-desc {
                font-size: 0.8rem;
                line-height: 1.7;
            }

            .data-badge-ek {
                padding: 10px 16px;
                gap: 8px;
                border-radius: var(--radius-sm);
            }

            .data-badge-ek .badge-number {
                font-size: 1.3rem;
            }

            .data-badge-ek .badge-label {
                font-size: 0.72rem;
            }

            .data-badge-ek .badge-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
                border-radius: 8px;
            }

            .subscribe-cta {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }

            .subscribe-cta h3 {
                font-size: 1.2rem;
            }

            .btn-ek {
                padding: 11px 22px;
                font-size: 0.85rem;
            }

            .btn-ek-lg {
                padding: 14px 28px;
                font-size: 0.9rem;
            }

            .site-footer {
                padding: 40px 0 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .footer-tech-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }

        @media (max-width: 519.98px) {
            .category-header .cat-title {
                font-size: 1.15rem;
            }

            .category-header .cat-desc {
                font-size: 0.88rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .guide-card .card-desc {
                font-size: 0.75rem;
            }

            .guide-card .card-link {
                font-size: 0.78rem;
            }

            .topic-tag-ek {
                font-size: 0.72rem;
                padding: 6px 12px;
            }

            .hot-topic-card {
                padding: 14px 16px;
            }

            .hot-topic-card .content h4 {
                font-size: 0.85rem;
            }

            .hot-topic-card .content p {
                font-size: 0.72rem;
            }
        }

/* roulang page: category2 */
:root {
      --bg-primary: #0D1117;
      --bg-secondary: #121820;
      --bg-card: rgba(255, 255, 255, 0.04);
      --bg-card-hover: rgba(255, 255, 255, 0.08);
      --text-primary: #F2F5F7;
      --text-secondary: #B8C4CE;
      --text-muted: #7E8C9A;
      --text-inverse: #FFFFFF;
      --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
      --gradient-accent: linear-gradient(135deg, #A855F7 0%, #22D3EE 100%);
      --gradient-warm: linear-gradient(135deg, #FB923C 0%, #F59E0B 100%);
      --color-purple: #7C3AED;
      --color-cyan: #06B6D4;
      --color-green: #A3E635;
      --color-orange: #FB923C;
      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-strong: rgba(255, 255, 255, 0.16);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 20px;
      --radius-xl: 24px;
      --radius-full: 50px;
      --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
      --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.3);
      --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
      --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
      --section-spacing: 88px;
      --section-spacing-mobile: 52px;
      --container-max: 1200px;
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-primary);
      background-color: var(--bg-primary);
      background-image: radial-gradient(circle at 15% 8%, rgba(124, 58, 237, 0.12) 0%, transparent 42%),
                        radial-gradient(circle at 88% 22%, rgba(6, 182, 212, 0.08) 0%, transparent 35%),
                        radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.04) 0%, transparent 40%);
      background-attachment: fixed;
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    a {
      color: var(--color-cyan);
      text-decoration: none;
      transition: color 0.25s ease, opacity 0.25s ease;
    }

    a:hover {
      color: #34D399;
      text-decoration: none;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    textarea:focus-visible {
      outline: 2px solid var(--color-cyan);
      outline-offset: 3px;
      border-radius: var(--radius-sm);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    .container {
      max-width: var(--container-max);
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-padding {
      padding-top: var(--section-spacing);
      padding-bottom: var(--section-spacing);
    }

    .section-padding-sm {
      padding-top: 48px;
      padding-bottom: 48px;
    }

    .section-padding-xs {
      padding-top: 32px;
      padding-bottom: 32px;
    }

    .section-divider {
      border-top: 1px solid var(--border-subtle);
    }

    .section-label {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--color-cyan);
      background: rgba(6, 182, 212, 0.12);
      padding: 6px 16px;
      border-radius: var(--radius-full);
      margin-bottom: 16px;
      font-family: var(--font-mono);
    }

    .section-label .icon {
      font-size: 0.85rem;
    }

    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-primary);
      margin-bottom: 12px;
      letter-spacing: -0.01em;
    }

    .section-desc {
      font-size: 1.02rem;
      color: var(--text-secondary);
      max-width: 720px;
      line-height: 1.85;
      margin-bottom: 28px;
    }

    .text-muted-strong {
      color: var(--text-muted);
    }

    .btn-ek {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 700;
      font-size: 0.95rem;
      padding: 14px 30px;
      border-radius: var(--radius-full);
      border: none;
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      white-space: nowrap;
      letter-spacing: 0.02em;
      font-family: var(--font-sans);
      text-decoration: none;
      line-height: 1.4;
    }

    .btn-ek-primary {
      background: var(--gradient-main);
      color: #fff;
      box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
    }

    .btn-ek-primary:hover {
      color: #fff;
      filter: brightness(1.1);
      transform: translateY(-2px) scale(1.02);
      box-shadow: 0 8px 28px rgba(124, 58, 237, 0.45);
    }

    .btn-ek-primary:active {
      transform: scale(0.98);
      filter: brightness(0.95);
    }

    .btn-ek-outline {
      background: transparent;
      color: var(--text-primary);
      border: 1px solid var(--border-strong);
      box-shadow: none;
    }

    .btn-ek-outline:hover {
      background: rgba(255, 255, 255, 0.06);
      color: var(--text-primary);
      border-color: rgba(124, 58, 237, 0.5);
      transform: translateY(-2px);
    }

    .btn-ek-outline:active {
      transform: scale(0.98);
    }

    .btn-ek-sm {
      padding: 10px 20px;
      font-size: 0.85rem;
    }

    .btn-ek-lg {
      padding: 18px 36px;
      font-size: 1.05rem;
    }

    /* Header / Navigation */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1050;
      background: rgba(13, 17, 23, 0.92);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-subtle);
      padding: 12px 0;
    }

    .site-header .navbar {
      padding: 0;
    }

    .navbar-ek {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      gap: 24px;
    }

    .navbar-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.3rem;
      color: var(--text-primary);
      white-space: nowrap;
      text-decoration: none;
      transition: opacity 0.25s ease;
    }

    .navbar-logo:hover {
      color: var(--text-primary);
      opacity: 0.85;
    }

    .logo-icon {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      background: var(--gradient-main);
      color: #fff;
      font-size: 1.1rem;
      box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
    }

    .nav-group {
      display: flex;
      align-items: center;
      gap: 28px;
    }

    .nav-link-ek {
      position: relative;
      display: inline-flex;
      align-items: center;
      font-size: 0.92rem;
      font-weight: 600;
      color: var(--text-secondary);
      padding: 6px 4px;
      text-decoration: none;
      transition: color 0.25s ease;
      letter-spacing: 0.01em;
    }

    .nav-link-ek:hover {
      color: var(--text-primary);
    }

    .nav-link-ek::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 50%;
      transform: translateX(-50%);
      width: 0;
      height: 2px;
      background: var(--gradient-main);
      border-radius: 4px;
      transition: width 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

    .nav-link-ek:hover::after {
      width: 100%;
    }

    .nav-link-ek.active {
      color: var(--text-primary);
    }

    .nav-link-ek.active::after {
      width: 100%;
      background: var(--gradient-main);
      box-shadow: 0 0 12px rgba(6, 182, 212, 0.6);
    }

    .navbar-toggler-ek {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      padding: 0;
      background: transparent;
      border: 1px solid var(--border-strong);
      border-radius: 12px;
      cursor: pointer;
      transition: background 0.25s ease;
    }

    .navbar-toggler-ek:hover {
      background: rgba(255, 255, 255, 0.06);
    }

    .toggler-line {
      display: block;
      width: 18px;
      height: 2px;
      background: var(--text-primary);
      border-radius: 2px;
      transition: all 0.3s ease;
      margin: 0 auto;
    }

    .mobile-menu-ek {
      margin-top: 12px;
      background: rgba(18, 24, 32, 0.98);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-subtle);
      padding: 16px 20px;
      box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    }

    .mobile-menu-ek .nav-link-ek {
      display: flex;
      padding: 12px 8px;
      font-size: 1rem;
      border-bottom: 1px solid var(--border-subtle);
    }

    .mobile-menu-ek .nav-link-ek:last-child {
      border-bottom: none;
    }

    .mobile-menu-ek .nav-link-ek::after {
      display: none;
    }

    .mobile-menu-ek .nav-link-ek.active {
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.18) 0%, rgba(6, 182, 212, 0.12) 100%);
      border-radius: var(--radius-sm);
      padding-left: 16px;
    }

    /* Breadcrumb */
    .breadcrumb-ek {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
      padding: 16px 0;
      font-size: 0.88rem;
      color: var(--text-muted);
      background: transparent;
      margin: 0;
      list-style: none;
    }

    .breadcrumb-ek a {
      color: var(--text-secondary);
      text-decoration: none;
      transition: color 0.25s ease;
    }

    .breadcrumb-ek a:hover {
      color: var(--color-cyan);
    }

    .breadcrumb-ek .separator {
      color: var(--text-muted);
      font-size: 0.75rem;
    }

    .breadcrumb-ek .current {
      color: var(--text-primary);
      font-weight: 600;
    }

    /* Category Header */
    .category-header {
      padding: 36px 0 24px;
      border-bottom: 1px solid var(--border-subtle);
      margin-bottom: 32px;
    }

    .category-title {
      font-size: 2.4rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-primary);
      margin-bottom: 12px;
      letter-spacing: -0.01em;
    }

    .category-desc {
      font-size: 1.05rem;
      color: var(--text-secondary);
      max-width: 820px;
      line-height: 1.85;
      margin-bottom: 0;
    }

    /* Filter Bar */
    .filter-bar {
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 20px 24px;
      margin-bottom: 40px;
    }

    .filter-bar .filter-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-muted);
      white-space: nowrap;
      font-family: var(--font-mono);
    }

    .filter-select {
      min-width: 180px;
      flex: 1 1 auto;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border-subtle);
      border-radius: 12px;
      color: var(--text-primary);
      padding: 10px 16px;
      font-size: 0.9rem;
      font-family: var(--font-sans);
      cursor: pointer;
      transition: border-color 0.25s ease, box-shadow 0.25s ease;
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23B8C4CE' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 16px center;
    }

    .filter-select:focus {
      outline: none;
      border-color: var(--color-cyan);
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    }

    .filter-btn {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: transparent;
      border: 1px solid var(--border-strong);
      border-radius: 12px;
      color: var(--text-secondary);
      padding: 10px 18px;
      font-size: 0.85rem;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.25s ease;
      white-space: nowrap;
    }

    .filter-btn:hover {
      background: rgba(255, 255, 255, 0.06);
      color: var(--text-primary);
      border-color: rgba(124, 58, 237, 0.5);
    }

    .filter-btn.active {
      background: var(--gradient-main);
      color: #fff;
      border-color: transparent;
      box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
    }

    /* Stats Banner */
    .stats-banner-ek {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
      margin-bottom: 40px;
    }

    .stat-badge-ek {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-lg);
      padding: 24px 20px;
      text-align: center;
      transition: all 0.3s ease;
    }

    .stat-badge-ek:hover {
      background: var(--bg-card-hover);
      border-color: rgba(124, 58, 237, 0.35);
      transform: translateY(-2px);
      box-shadow: var(--shadow-card);
    }

    .stat-badge-ek .stat-number {
      display: block;
      font-family: var(--font-mono);
      font-size: 2rem;
      font-weight: 700;
      color: var(--text-primary);
      line-height: 1.2;
      margin-bottom: 6px;
    }

    .stat-badge-ek .stat-label {
      font-size: 0.85rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* News List */
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .news-card-ek {
      display: flex;
      gap: 24px;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      padding: 24px;
      transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      overflow: hidden;
    }

    .news-card-ek:hover {
      background: var(--bg-card-hover);
      border-color: rgba(124, 58, 237, 0.3);
      transform: translateY(-4px);
      box-shadow: var(--shadow-card-hover);
    }

    .news-card-thumb {
      flex-shrink: 0;
      width: 220px;
      height: 160px;
      border-radius: var(--radius-md);
      overflow: hidden;
      background: var(--bg-secondary);
      border: 1px solid var(--border-subtle);
    }

    .news-card-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .news-card-ek:hover .news-card-thumb img {
      transform: scale(1.04);
    }

    .news-card-body {
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .news-card-date {
      font-family: var(--font-mono);
      font-size: 0.8rem;
      color: var(--color-cyan);
      letter-spacing: 0.05em;
      margin-bottom: 8px;
      font-weight: 500;
    }

    .news-card-title {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-card-desc {
      font-size: 0.95rem;
      color: var(--text-secondary);
      line-height: 1.75;
      margin-bottom: 16px;
    }

    .news-card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--color-cyan);
      text-decoration: none;
      transition: all 0.25s ease;
      align-self: flex-start;
    }

    .news-card-link:hover {
      color: #34D399;
      gap: 10px;
    }

    /* Hot Tags */
    .hot-tags-section {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-xl);
      padding: 28px 32px;
    }

    .hot-tags-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .hot-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .tag-pill {
      display: inline-flex;
      align-items: center;
      padding: 8px 18px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-subtle);
      border-radius: var(--radius-full);
      color: var(--text-secondary);
      font-size: 0.85rem;
      font-weight: 500;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .tag-pill:hover {
      background: rgba(124, 58, 237, 0.15);
      border-color: rgba(124, 58, 237, 0.4);
      color: var(--text-primary);
      transform: translateY(-1px);
    }

    /* Subscribe CTA */
    .subscribe-cta {
      background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(6, 182, 212, 0.12) 100%);
      border: 1px solid rgba(124, 58, 237, 0.3);
      border-radius: var(--radius-xl);
      padding: 48px 40px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
      flex-wrap: wrap;
    }

    .subscribe-cta-content {
      flex: 1;
      min-width: 280px;
    }

    .subscribe-cta-title {
      font-size: 1.6rem;
      font-weight: 800;
      color: var(--text-primary);
      margin-bottom: 10px;
    }

    .subscribe-cta-desc {
      font-size: 0.95rem;
      color: var(--text-secondary);
      margin-bottom: 0;
      line-height: 1.75;
    }

    .subscribe-form {
      display: flex;
      gap: 12px;
      flex: 1;
      min-width: 300px;
      max-width: 520px;
    }

    .subscribe-form input[type="email"] {
      flex: 1;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid var(--border-subtle);
      border-radius: 12px;
      color: var(--text-primary);
      padding: 13px 18px;
      font-size: 0.9rem;
      font-family: var(--font-sans);
      transition: all 0.25s ease;
    }

    .subscribe-form input[type="email"]::placeholder {
      color: rgba(255, 255, 255, 0.35);
    }

    .subscribe-form input[type="email"]:focus {
      outline: none;
      border-color: var(--color-cyan);
      box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    }

    /* Footer */
    .site-footer {
      background: var(--bg-secondary);
      border-top: 1px solid var(--border-subtle);
      padding-top: 64px;
      padding-bottom: 32px;
      margin-top: 64px;
    }

    .footer-brand-text {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.8;
      margin-top: 16px;
      margin-bottom: 0;
    }

    .footer-heading {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-links {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-links li {
      margin-bottom: 10px;
    }

    .footer-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.88rem;
      transition: color 0.25s ease, padding-left 0.25s ease;
    }

    .footer-links a:hover {
      color: var(--color-cyan);
      padding-left: 4px;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      border-top: 1px solid var(--border-subtle);
      margin-top: 48px;
      padding-top: 24px;
    }

    .copyright {
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    .footer-tech-links {
      font-size: 0.85rem;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-tech-links a {
      color: var(--text-muted);
      text-decoration: none;
      transition: color 0.25s ease;
    }

    .footer-tech-links a:hover {
      color: var(--color-cyan);
    }

    /* Responsive */
    @media (max-width: 991.98px) {
      .navbar-toggler-ek {
        display: flex;
      }

      .nav-group {
        display: none;
      }

      .navbar-ek {
        justify-content: space-between;
      }

      .navbar-logo {
        font-size: 1.15rem;
        gap: 8px;
      }

      .logo-icon {
        width: 34px;
        height: 34px;
        font-size: 1rem;
      }

      .section-padding {
        padding-top: var(--section-spacing-mobile);
        padding-bottom: var(--section-spacing-mobile);
      }

      .section-title {
        font-size: 1.75rem;
      }

      .category-title {
        font-size: 1.9rem;
      }

      .news-card-ek {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
      }

      .news-card-thumb {
        width: 100%;
        height: 200px;
      }

      .stats-banner-ek {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }

      .subscribe-cta {
        flex-direction: column;
        align-items: flex-start;
        padding: 36px 28px;
      }

      .subscribe-form {
        width: 100%;
        max-width: 100%;
      }

      .filter-bar {
        padding: 16px 20px;
        gap: 12px;
      }
    }

    @media (max-width: 767.98px) {
      .section-padding {
        padding-top: 44px;
        padding-bottom: 44px;
      }

      .section-title {
        font-size: 1.5rem;
      }

      .category-title {
        font-size: 1.6rem;
      }

      .category-desc {
        font-size: 0.95rem;
      }

      .container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .news-card-title {
        font-size: 1.15rem;
      }

      .news-card-desc {
        font-size: 0.88rem;
      }

      .news-card-thumb {
        height: 160px;
      }

      .stats-banner-ek {
        grid-template-columns: 1fr;
        gap: 10px;
      }

      .stat-badge-ek {
        padding: 18px 16px;
      }

      .stat-badge-ek .stat-number {
        font-size: 1.6rem;
      }

      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
      }

      .hot-tags-section {
        padding: 20px;
      }
    }

    @media (max-width: 519.98px) {
      .navbar-logo {
        font-size: 1rem;
      }

      .logo-icon {
        width: 30px;
        height: 30px;
        font-size: 0.85rem;
      }

      .section-padding {
        padding-top: 36px;
        padding-bottom: 36px;
      }

      .category-title {
        font-size: 1.4rem;
      }

      .filter-bar {
        flex-direction: column;
        align-items: stretch;
      }

      .filter-select {
        width: 100%;
        min-width: auto;
      }

      .subscribe-form {
        flex-direction: column;
      }

      .subscribe-form input[type="email"] {
        width: 100%;
      }

      .subscribe-form .btn-ek {
        width: 100%;
      }
    }

/* roulang page: category1 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #121820;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-primary: #F2F5F7;
            --text-secondary: #B8C4CE;
            --text-muted: #7E8C9A;
            --text-inverse: #FFFFFF;
            --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
            --gradient-accent: linear-gradient(135deg, #A855F7 0%, #22D3EE 100%);
            --gradient-warm: linear-gradient(135deg, #FB923C 0%, #F59E0B 100%);
            --color-purple: #7C3AED;
            --color-cyan: #06B6D4;
            --color-green: #A3E635;
            --color-orange: #FB923C;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-full: 50px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.3);
            --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
            --section-spacing: 72px;
            --section-spacing-mobile: 44px;
            --container-max: 1200px;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 15% 8%, rgba(124, 58, 237, 0.10) 0%, transparent 42%),
                              radial-gradient(circle at 88% 22%, rgba(6, 182, 212, 0.06) 0%, transparent 35%),
                              radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.03) 0%, transparent 40%);
            background-attachment: fixed;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-cyan);
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease;
        }
        a:hover {
            color: #34D399;
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
        }
        .section-padding-sm {
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .section-padding-xs {
            padding-top: 24px;
            padding-bottom: 24px;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.12);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 14px;
            font-family: var(--font-mono);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 760px;
            line-height: 1.85;
            margin-bottom: 24px;
        }

        .text-muted-strong {
            color: var(--text-muted);
        }

        .btn-ek {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 12px 26px;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            white-space: nowrap;
            letter-spacing: 0.02em;
            font-family: var(--font-sans);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-ek-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
        }
        .btn-ek-primary:hover {
            background: var(--gradient-accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(124, 58, 237, 0.45);
        }
        .btn-ek-primary:active {
            transform: scale(0.98);
            box-shadow: 0 2px 12px rgba(124, 58, 237, 0.4);
        }
        .btn-ek-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
            box-shadow: none;
        }
        .btn-ek-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }
        .btn-ek-secondary:active {
            transform: scale(0.98);
            background: rgba(255, 255, 255, 0.1);
        }
        .btn-ek-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }
        .btn-ek-lg {
            padding: 16px 36px;
            font-size: 1rem;
        }

        /* 导航 */
        .site-header {
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 12px 0;
        }
        .navbar-ek {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .navbar-toggler-ek {
            background: transparent;
            border: 1px solid var(--border-strong);
            border-radius: 10px;
            padding: 8px 10px;
            display: flex;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            transition: all 0.25s ease;
            width: 44px;
            height: 40px;
            justify-content: center;
            align-items: center;
        }
        .navbar-toggler-ek:hover {
            background: rgba(255,255,255,0.06);
            border-color: rgba(255,255,255,0.3);
        }
        .toggler-line {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all 0.25s ease;
        }
        .navbar-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-family: var(--font-sans);
            font-weight: 800;
            font-size: 1.35rem;
            color: #fff;
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .navbar-logo:hover {
            color: #fff;
            opacity: 0.9;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--gradient-main);
            border-radius: 10px;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 0 18px rgba(124, 58, 237, 0.4);
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1 1 0;
        }
        .nav-group-left {
            justify-content: flex-end;
            padding-right: 20px;
        }
        .nav-group-right {
            justify-content: flex-start;
            padding-left: 20px;
        }
        .nav-link-ek {
            display: inline-flex;
            align-items: center;
            color: var(--text-secondary);
            font-size: 0.92rem;
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 50px;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
            position: relative;
        }
        .nav-link-ek:hover {
            color: #fff;
            background: rgba(255,255,255,0.06);
        }
        .nav-link-ek.active {
            color: #fff;
            background: var(--gradient-main);
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
        }
        .mobile-menu-ek {
            background: rgba(13, 17, 23, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 12px 24px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu-ek .nav-link-ek {
            display: flex;
            width: 100%;
            padding: 12px 16px;
            border-radius: 12px;
            font-size: 1rem;
            border-bottom: 1px solid var(--border-subtle);
        }
        .mobile-menu-ek .nav-link-ek.active {
            background: rgba(124, 58, 237, 0.25);
            box-shadow: none;
            border-bottom-color: transparent;
        }
        @media (max-width: 991.98px) {
            .navbar-ek {
                justify-content: space-between;
            }
            .navbar-logo {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
                font-size: 1.2rem;
            }
            .nav-group {
                display: none;
            }
            .d-lg-none.spacer {
                display: block;
            }
        }
        @media (min-width: 992px) {
            .navbar-toggler-ek {
                display: none;
            }
            .mobile-menu-ek {
                display: none !important;
            }
        }

        /* 面包屑 */
        .breadcrumb-ek {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 16px 0 0;
        }
        .breadcrumb-ek a {
            color: var(--color-cyan);
        }
        .breadcrumb-ek a:hover {
            color: #34D399;
        }
        .breadcrumb-sep {
            color: var(--text-muted);
            font-size: 0.75rem;
        }

        /* 分类头部紧凑横幅 */
        .category-hero {
            padding: 32px 0 36px;
            background: rgba(18, 24, 32, 0.6);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            top: -50%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-h1 {
            font-size: 2.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 10px;
            color: #fff;
        }
        .category-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 780px;
            line-height: 1.85;
            margin-bottom: 18px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 8px;
        }

        /* 数据徽章 */
        .data-badge {
            display: inline-flex;
            align-items: baseline;
            gap: 6px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 8px 16px;
            font-family: var(--font-mono);
            transition: all 0.25s ease;
        }
        .data-badge:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255,255,255,0.2);
        }
        .data-badge .num {
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .data-badge .unit {
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }
        .data-badge .label {
            font-size: 0.75rem;
            color: var(--color-cyan);
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        /* 筛选工具条 */
        .filter-bar {
            background: rgba(255,255,255,0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            margin-top: -18px;
            position: relative;
            z-index: 3;
            backdrop-filter: blur(8px);
        }
        .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .filter-group {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .filter-pill {
            background: transparent;
            border: 1px solid var(--border-strong);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .filter-pill:hover {
            background: rgba(255,255,255,0.06);
            color: #fff;
            border-color: rgba(255,255,255,0.3);
        }
        .filter-pill.active {
            background: var(--gradient-main);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
        }

        /* 赛事列表卡片 */
        .event-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
        }
        .event-card:hover {
            transform: translateY(-6px);
            background: var(--bg-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
            box-shadow: var(--shadow-card-hover);
        }
        .event-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: #1a1f2b;
        }
        .event-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .event-card:hover .event-card-img img {
            transform: scale(1.04);
        }
        .event-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(13,17,23,0.85) 100%);
        }
        .event-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .event-date {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--color-orange);
            letter-spacing: 0.06em;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .event-date i {
            font-size: 0.8rem;
        }
        .event-title {
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 1.45;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .event-summary {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .event-link {
            align-self: flex-start;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--color-cyan);
            transition: all 0.25s ease;
        }
        .event-link:hover {
            color: #34D399;
            gap: 10px;
        }

        /* 数据速览 */
        .stats-band {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 24px 26px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
        }
        .stats-band-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .stats-band-item .stat-num {
            font-family: var(--font-mono);
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .stats-band-item .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 热点卡片 */
        .hot-topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all 0.25s ease;
            display: block;
            text-decoration: none;
            color: var(--text-primary);
            height: 100%;
        }
        .hot-topic-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(6, 182, 212, 0.3);
            transform: translateY(-4px);
            color: var(--text-primary);
        }
        .hot-topic-title {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .hot-topic-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 订阅 CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.18) 0%, rgba(6, 182, 212, 0.12) 100%);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-xl);
            padding: 32px 30px;
            position: relative;
            overflow: hidden;
        }
        .subscribe-cta::before {
            content: "";
            position: absolute;
            top: -60%;
            right: -10%;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(163, 230, 53, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }
        .subscribe-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-top: 16px;
        }
        .subscribe-form input {
            flex: 1 1 240px;
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border-subtle);
            border-radius: 12px;
            padding: 12px 16px;
            color: var(--text-primary);
            font-size: 0.9rem;
            transition: all 0.25s ease;
            font-family: var(--font-sans);
        }
        .subscribe-form input::placeholder {
            color: var(--text-muted);
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--color-cyan);
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.25);
            background: rgba(255,255,255,0.08);
        }

        /* 页脚 */
        .site-footer {
            background: #0A0E14;
            border-top: 1px solid var(--border-subtle);
            padding-top: 48px;
            padding-bottom: 24px;
            margin-top: 40px;
        }
        .footer-brand-text {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 400px;
        }
        .footer-heading {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.25s ease;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-tech-links {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .footer-tech-links a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color 0.25s ease;
        }
        .footer-tech-links a:hover {
            color: #fff;
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .category-h1 {
                font-size: 2rem;
            }
            .category-desc {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .filter-bar {
                padding: 14px 16px;
                gap: 10px;
            }
        }
        @media (max-width: 767.98px) {
            .event-card-img {
                height: 150px;
            }
            .event-card-body {
                padding: 16px 18px 18px;
            }
            .event-title {
                font-size: 1.1rem;
            }
            .event-summary {
                font-size: 0.85rem;
                line-height: 1.7;
                max-height: 4.2em;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-cta {
                padding: 24px 18px;
            }
        }
        @media (max-width: 520px) {
            .category-h1 {
                font-size: 1.7rem;
            }
            .btn-ek {
                padding: 11px 20px;
                font-size: 0.85rem;
            }
            .data-badge .num {
                font-size: 1rem;
            }
            .stats-band {
                padding: 18px;
                gap: 12px;
            }
            .stats-band-item .stat-num {
                font-size: 1.3rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #121820;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-primary: #F2F5F7;
            --text-secondary: #B8C4CE;
            --text-muted: #7E8C9A;
            --text-inverse: #FFFFFF;
            --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
            --gradient-accent: linear-gradient(135deg, #A855F7 0%, #22D3EE 100%);
            --gradient-warm: linear-gradient(135deg, #FB923C 0%, #F59E0B 100%);
            --color-purple: #7C3AED;
            --color-cyan: #06B6D4;
            --color-green: #A3E635;
            --color-orange: #FB923C;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-full: 50px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.3);
            --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
            --section-spacing: 88px;
            --section-spacing-mobile: 52px;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 15% 8%, rgba(124, 58, 237, 0.12) 0%, transparent 42%), radial-gradient(circle at 88% 22%, rgba(6, 182, 212, 0.08) 0%, transparent 35%), radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.04) 0%, transparent 40%);
            background-attachment: fixed;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-cyan);
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease;
        }

        a:hover {
            color: #34D399;
            text-decoration: none;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
        }

        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .section-padding-xs {
            padding-top: 32px;
            padding-bottom: 32px;
        }

        .section-divider {
            border-top: 1px solid var(--border-subtle);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.12);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }

        .section-label .icon {
            font-size: 0.85rem;
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 1.02rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .text-muted-strong {
            color: var(--text-muted);
        }

        .btn-ek {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            white-space: nowrap;
            letter-spacing: 0.02em;
            font-family: var(--font-sans);
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-ek-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
        }

        .btn-ek-primary:hover {
            color: #fff;
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.55);
            transform: translateY(-2px) scale(1.02);
        }

        .btn-ek-primary:active {
            transform: scale(0.98);
            box-shadow: 0 2px 12px rgba(124, 58, 237, 0.3);
        }

        .btn-ek-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
        }

        .btn-ek-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        .btn-ek-secondary:active {
            transform: scale(0.98);
        }

        .btn-ek-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }

        .btn-ek-lg {
            padding: 16px 38px;
            font-size: 1.05rem;
        }

        /* Header & Nav */
        .site-header {
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1040;
            padding: 0;
        }

        .navbar-ek {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            width: 100%;
            min-height: 72px;
            position: relative;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-group-left {
            margin-right: auto;
            justify-content: flex-end;
            flex: 1;
        }

        .nav-group-right {
            margin-left: auto;
            justify-content: flex-start;
            flex: 1;
        }

        .nav-link-ek {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            transition: all 0.3s ease;
            white-space: nowrap;
            position: relative;
            letter-spacing: 0.02em;
        }

        .nav-link-ek:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link-ek.active {
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.12);
            font-weight: 600;
        }

        .nav-link-ek.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 28px;
            height: 3px;
            border-radius: 2px;
            background: var(--gradient-main);
        }

        .navbar-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.02em;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

        .navbar-logo:hover {
            color: var(--text-primary);
            transform: scale(1.03);
        }

        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: var(--gradient-main);
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
        }

        .navbar-toggler-ek {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-strong);
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            padding: 0;
            flex-shrink: 0;
        }

        .navbar-toggler-ek:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.3);
        }

        .toggler-line {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 1px;
            transition: all 0.3s ease;
        }

        .mobile-menu-ek {
            background: rgba(13, 17, 23, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 16px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .mobile-menu-ek .nav-link-ek {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            border-radius: var(--radius-md);
        }

        .mobile-menu-ek .nav-link-ek.active::after {
            display: none;
        }

        /* Breadcrumb */
        .breadcrumb-ek {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 20px 0 8px;
            margin-bottom: 0;
        }

        .breadcrumb-ek a {
            color: var(--text-muted);
            transition: color 0.25s;
        }

        .breadcrumb-ek a:hover {
            color: var(--color-cyan);
        }

        .breadcrumb-ek .sep {
            color: var(--text-muted);
            opacity: 0.6;
            font-size: 0.75rem;
        }

        .breadcrumb-ek .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Category Compact Banner */
        .category-banner {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(6, 182, 212, 0.06) 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
            margin-bottom: 40px;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 6px;
            height: 100%;
            background: var(--gradient-main);
            border-radius: 6px 0 0 6px;
        }

        .category-banner::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

        .category-h1 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .category-intro {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.85;
            margin-bottom: 0;
        }

        /* Data Badge Strip */
        .badge-strip-ek {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .stat-badge-ek {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            padding: 10px 22px;
            transition: all 0.3s ease;
            cursor: default;
        }

        .stat-badge-ek:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-strong);
            transform: translateY(-2px);
        }

        .stat-badge-ek .stat-num {
            font-family: var(--font-mono);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-cyan);
            letter-spacing: -0.01em;
        }

        .stat-badge-ek .stat-unit {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .stat-badge-ek.green .stat-num {
            color: var(--color-green);
        }

        .stat-badge-ek.orange .stat-num {
            color: var(--color-orange);
        }

        .stat-badge-ek.purple .stat-num {
            color: var(--color-purple);
        }

        /* Filter Toolbar */
        .filter-toolbar-ek {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 18px 24px;
        }

        .filter-toolbar-ek .filter-group {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
        }

        .filter-toolbar-ek .filter-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 4px;
        }

        .filter-btn-ek {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            padding: 8px 18px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: var(--font-sans);
            white-space: nowrap;
        }

        .filter-btn-ek:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
            border-color: var(--border-strong);
        }

        .filter-btn-ek.active {
            background: var(--gradient-main);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
        }

        .filter-sort-ek {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            padding: 8px 20px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: var(--font-sans);
        }

        .filter-sort-ek:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        /* Story Cards List */
        .story-list-ek {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .story-card-ek {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            overflow: hidden;
        }

        .story-card-ek::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--gradient-main);
            opacity: 0;
            transition: opacity 0.35s ease;
        }

        .story-card-ek:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-strong);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .story-card-ek:hover::before {
            opacity: 1;
        }

        .story-card-ek .story-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 140px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
        }

        .story-card-ek .story-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .story-card-ek:hover .story-thumb img {
            transform: scale(1.05);
        }

        .story-card-ek .story-thumb .thumb-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(13, 17, 23, 0.85);
            backdrop-filter: blur(8px);
            color: var(--color-cyan);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
        }

        .story-card-ek .story-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 12px;
        }

        .story-card-ek .story-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .story-card-ek .story-meta .date {
            color: var(--text-muted);
        }

        .story-card-ek .story-meta .tag {
            display: inline-flex;
            align-items: center;
            background: rgba(124, 58, 237, 0.15);
            color: #A78BFA;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: var(--radius-full);
            font-family: var(--font-sans);
            font-size: 0.75rem;
        }

        .story-card-ek .story-title {
            font-size: 1.25rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-primary);
            margin-bottom: 0;
            letter-spacing: -0.01em;
        }

        .story-card-ek .story-excerpt {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .story-card-ek .story-action {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-cyan);
            transition: all 0.3s ease;
            align-self: flex-start;
        }

        .story-card-ek .story-action:hover {
            color: #34D399;
            gap: 10px;
        }

        /* Featured Story */
        .featured-story-ek {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: all 0.35s ease;
        }

        .featured-story-ek:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }

        .featured-story-ek .featured-img {
            min-height: 320px;
            position: relative;
            overflow: hidden;
            background: var(--bg-secondary);
        }

        .featured-story-ek .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .featured-story-ek:hover .featured-img img {
            transform: scale(1.05);
        }

        .featured-story-ek .featured-img .featured-badge {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--gradient-warm);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            letter-spacing: 0.04em;
        }

        .featured-story-ek .featured-body {
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 40px 36px;
            gap: 16px;
        }

        .featured-story-ek .featured-title {
            font-size: 1.65rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 0;
            letter-spacing: -0.01em;
        }

        .featured-story-ek .featured-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Tags Cloud */
        .tag-cloud-ek {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-chip-ek {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            padding: 8px 18px;
            transition: all 0.3s ease;
            cursor: pointer;
            font-family: var(--font-sans);
        }

        .tag-chip-ek:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
            border-color: var(--border-strong);
            transform: translateY(-2px);
        }

        .tag-chip-ek .tag-count {
            font-family: var(--font-mono);
            font-size: 0.72rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 8px;
            border-radius: var(--radius-full);
        }

        /* Subscribe CTA */
        .subscribe-cta-ek {
            background: var(--gradient-main);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
        }

        .subscribe-cta-ek::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-cta-ek::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -8%;
            width: 260px;
            height: 260px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }

        .subscribe-cta-ek .cta-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta-ek .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            line-height: 1.8;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta-ek .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .subscribe-cta-ek .cta-input {
            flex: 1;
            min-width: 240px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 50px;
            padding: 14px 24px;
            color: #fff;
            font-size: 0.95rem;
            font-family: var(--font-sans);
            transition: all 0.3s ease;
        }

        .subscribe-cta-ek .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .subscribe-cta-ek .cta-input:focus {
            outline: none;
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.6);
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.15);
        }

        .subscribe-cta-ek .btn-cta-white {
            background: #fff;
            color: #7C3AED;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            font-family: var(--font-sans);
            white-space: nowrap;
        }

        .subscribe-cta-ek .btn-cta-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
        }

        .subscribe-cta-ek .btn-cta-white:active {
            transform: scale(0.98);
        }

        .subscribe-cta-ek .cta-note {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
            position: relative;
            z-index: 1;
            margin-bottom: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 64px 0 32px;
            margin-top: 40px;
        }

        .footer-brand-text {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.75;
            max-width: 320px;
        }

        .footer-heading {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links li a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: all 0.3s ease;
        }

        .footer-links li a:hover {
            color: var(--color-cyan);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            margin-top: 40px;
        }

        .footer-bottom .copyright {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-tech-links {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
        }

        .footer-tech-links a {
            color: var(--text-muted);
            transition: color 0.3s;
        }

        .footer-tech-links a:hover {
            color: var(--color-cyan);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .navbar-ek {
                justify-content: space-between;
                gap: 12px;
                min-height: 64px;
            }

            .nav-group-left,
            .nav-group-right {
                display: none !important;
            }

            .navbar-logo {
                font-size: 1.1rem;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 10px;
            }

            .section-padding {
                padding-top: var(--section-spacing-mobile);
                padding-bottom: var(--section-spacing-mobile);
            }

            .section-title {
                font-size: 1.75rem;
            }

            .category-banner {
                padding: 32px 24px;
                border-radius: var(--radius-lg);
            }

            .category-h1 {
                font-size: 2rem;
            }

            .category-intro {
                font-size: 0.95rem;
            }

            .story-card-ek {
                flex-direction: column;
                gap: 16px;
                padding: 22px 20px;
            }

            .story-card-ek .story-thumb {
                width: 100%;
                height: 200px;
            }

            .story-card-ek .story-title {
                font-size: 1.1rem;
            }

            .featured-story-ek {
                grid-template-columns: 1fr;
            }

            .featured-story-ek .featured-img {
                min-height: 220px;
            }

            .featured-story-ek .featured-body {
                padding: 28px 24px;
            }

            .featured-story-ek .featured-title {
                font-size: 1.35rem;
            }

            .subscribe-cta-ek {
                padding: 36px 24px;
                border-radius: var(--radius-lg);
            }

            .subscribe-cta-ek .cta-title {
                font-size: 1.5rem;
            }

            .filter-toolbar-ek {
                padding: 14px 16px;
                flex-direction: column;
                align-items: flex-start;
            }

            .stat-badge-ek {
                padding: 8px 16px;
            }

            .stat-badge-ek .stat-num {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .category-h1 {
                font-size: 1.6rem;
            }

            .category-banner {
                padding: 24px 18px;
                border-radius: var(--radius-md);
            }

            .badge-strip-ek {
                gap: 8px;
            }

            .stat-badge-ek {
                padding: 6px 14px;
                border-radius: var(--radius-full);
            }

            .stat-badge-ek .stat-num {
                font-size: 0.95rem;
            }

            .stat-badge-ek .stat-unit {
                font-size: 0.72rem;
            }

            .story-card-ek .story-thumb {
                height: 170px;
            }

            .story-card-ek .story-excerpt {
                font-size: 0.85rem;
                -webkit-line-clamp: 4;
            }

            .story-card-ek .story-meta {
                font-size: 0.72rem;
                gap: 8px;
            }

            .featured-story-ek .featured-img {
                min-height: 180px;
            }

            .featured-story-ek .featured-body {
                padding: 20px 18px;
                gap: 10px;
            }

            .featured-story-ek .featured-desc {
                font-size: 0.85rem;
            }

            .subscribe-cta-ek {
                padding: 28px 18px;
                border-radius: var(--radius-lg);
            }

            .subscribe-cta-ek .cta-title {
                font-size: 1.25rem;
            }

            .subscribe-cta-ek .cta-desc {
                font-size: 0.88rem;
            }

            .subscribe-cta-ek .cta-input {
                min-width: 100%;
                padding: 12px 20px;
                font-size: 0.85rem;
            }

            .subscribe-cta-ek .btn-cta-white {
                width: 100%;
                padding: 12px 24px;
                font-size: 0.85rem;
            }

            .filter-btn-ek {
                font-size: 0.78rem;
                padding: 6px 14px;
            }

            .filter-sort-ek {
                font-size: 0.78rem;
                padding: 6px 14px;
            }

            .tag-chip-ek {
                font-size: 0.75rem;
                padding: 6px 14px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .footer-tech-links {
                flex-wrap: wrap;
                gap: 8px;
            }
        }

        @media (max-width: 519.98px) {
            .category-h1 {
                font-size: 1.4rem;
            }

            .category-intro {
                font-size: 0.88rem;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .section-desc {
                font-size: 0.9rem;
            }

            .story-card-ek .story-title {
                font-size: 1rem;
            }

            .story-card-ek .story-thumb {
                height: 140px;
            }

            .featured-story-ek .featured-title {
                font-size: 1.15rem;
            }

            .stat-badge-ek {
                width: calc(50% - 8px);
                justify-content: center;
                padding: 8px 12px;
            }

            .stat-badge-ek .stat-num {
                font-size: 1.05rem;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #121820;
            --bg-card: rgba(255, 255, 255, 0.04);
            --bg-card-hover: rgba(255, 255, 255, 0.08);
            --text-primary: #F2F5F7;
            --text-secondary: #B8C4CE;
            --text-muted: #7E8C9A;
            --text-inverse: #FFFFFF;
            --gradient-main: linear-gradient(135deg, #7C3AED 0%, #06B6D4 100%);
            --gradient-accent: linear-gradient(135deg, #A855F7 0%, #22D3EE 100%);
            --gradient-warm: linear-gradient(135deg, #FB923C 0%, #F59E0B 100%);
            --color-purple: #7C3AED;
            --color-cyan: #06B6D4;
            --color-green: #A3E635;
            --color-orange: #FB923C;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --radius-full: 50px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.3);
            --shadow-glow: 0 0 24px rgba(6, 182, 212, 0.35);
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', monospace;
            --section-spacing: 88px;
            --section-spacing-mobile: 52px;
            --container-max: 1200px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-primary);
            background-image: radial-gradient(circle at 15% 8%, rgba(124, 58, 237, 0.12) 0%, transparent 42%), radial-gradient(circle at 88% 22%, rgba(6, 182, 212, 0.08) 0%, transparent 35%), radial-gradient(circle at 50% 85%, rgba(163, 230, 53, 0.04) 0%, transparent 40%);
            background-attachment: fixed;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--color-cyan);
            text-decoration: none;
            transition: color 0.25s ease, opacity 0.25s ease;
        }
        a:hover {
            color: #34D399;
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--color-cyan);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: var(--section-spacing);
            padding-bottom: var(--section-spacing);
        }
        .section-padding-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }
        .section-padding-xs {
            padding-top: 32px;
            padding-bottom: 32px;
        }
        .section-divider {
            border-top: 1px solid var(--border-subtle);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.12);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }
        .section-label .icon {
            font-size: 0.85rem;
        }

        .section-title {
            font-size: 2.15rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1.02rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.85;
            margin-bottom: 28px;
        }
        .text-muted-strong {
            color: var(--text-muted);
        }

        /* Buttons */
        .btn-ek {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 14px 30px;
            border-radius: var(--radius-full);
            border: none;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            white-space: nowrap;
            letter-spacing: 0.02em;
            font-family: var(--font-sans);
            text-decoration: none;
            line-height: 1.4;
        }
        .btn-ek-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 4px 20px rgba(124, 58, 237, 0.35);
        }
        .btn-ek-primary:hover {
            background: var(--gradient-accent);
            color: #fff;
            box-shadow: 0 8px 32px rgba(124, 58, 237, 0.5);
            transform: scale(1.03);
        }
        .btn-ek-primary:active {
            transform: scale(0.98);
            box-shadow: 0 2px 10px rgba(124, 58, 237, 0.3);
        }
        .btn-ek-outline {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-strong);
        }
        .btn-ek-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--color-cyan);
            border-color: var(--color-cyan);
            transform: scale(1.03);
        }
        .btn-ek-outline:active {
            transform: scale(0.98);
        }
        .btn-ek-sm {
            padding: 10px 20px;
            font-size: 0.85rem;
        }
        .btn-ek-lg {
            padding: 18px 40px;
            font-size: 1.05rem;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0;
        }
        .navbar-ek {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            min-height: 72px;
            gap: 12px;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }
        .nav-group-left {
            justify-content: flex-end;
        }
        .nav-group-right {
            justify-content: flex-start;
        }
        .nav-link-ek {
            display: inline-flex;
            align-items: center;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-secondary);
            padding: 8px 16px;
            border-radius: var(--radius-full);
            transition: all 0.3s ease;
            position: relative;
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-link-ek:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-link-ek.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.25) 0%, rgba(6, 182, 212, 0.25) 100%);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.5);
        }
        .nav-link-ek.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 3px;
            background: var(--gradient-main);
        }
        .navbar-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.04em;
            text-decoration: none;
            transition: all 0.3s ease;
            flex-shrink: 0;
            padding: 8px 0;
        }
        .navbar-logo:hover {
            color: #fff;
            opacity: 0.85;
        }
        .navbar-logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--gradient-main);
            color: #fff;
            font-size: 1.15rem;
            box-shadow: var(--shadow-glow);
        }
        .navbar-toggler-ek {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            border: 1px solid var(--border-strong);
            background: rgba(255, 255, 255, 0.04);
            cursor: pointer;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }
        .navbar-toggler-ek:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-cyan);
        }
        .toggler-line {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--color-cyan);
            transition: all 0.3s ease;
        }
        .mobile-menu-ek {
            background: rgba(13, 17, 23, 0.98);
            border-top: 1px solid var(--border-subtle);
            padding: 16px 24px 24px;
            display: none;
        }
        .mobile-menu-ek.show {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu-ek .nav-link-ek {
            padding: 14px 20px;
            font-size: 1rem;
            border-radius: var(--radius-md);
            width: 100%;
        }
        .mobile-menu-ek .nav-link-ek.active::after {
            display: none;
        }

        @media (max-width: 991.98px) {
            .navbar-ek {
                min-height: 64px;
            }
            .nav-group-left,
            .nav-group-right {
                display: none !important;
            }
            .navbar-logo {
                font-size: 1.1rem;
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
            .navbar-logo .logo-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .navbar-ek {
                justify-content: space-between;
            }
        }

        /* Breadcrumb */
        .breadcrumb-ek {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 0;
            margin: 0 0 20px 0;
            list-style: none;
        }
        .breadcrumb-ek li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-ek li:not(:last-child)::after {
            content: '/';
            color: var(--text-muted);
            margin-left: 4px;
            font-size: 0.75rem;
        }
        .breadcrumb-ek a {
            color: var(--color-cyan);
            text-decoration: none;
            transition: color 0.25s;
        }
        .breadcrumb-ek a:hover {
            color: #34D399;
        }
        .breadcrumb-ek .current {
            color: var(--text-secondary);
        }

        /* Category compact banner */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(13, 17, 23, 0.92) 0%, rgba(18, 24, 32, 0.88) 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            overflow: hidden;
            margin-bottom: 40px;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.22) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -15%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.18) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 2;
        }
        .category-banner .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--color-green);
            background: rgba(163, 230, 53, 0.12);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            margin-bottom: 16px;
            font-family: var(--font-mono);
            letter-spacing: 0.06em;
        }
        .category-banner h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .category-banner .banner-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* Card base */
        .card-ek {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .card-ek:hover {
            background: var(--bg-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-6px);
        }

        /* Data badge */
        .badge-data {
            display: inline-flex;
            align-items: baseline;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            font-family: var(--font-mono);
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .badge-data .num {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .badge-data .unit {
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 0.06em;
        }
        .badge-data:hover {
            border-color: var(--color-cyan);
            background: rgba(6, 182, 212, 0.08);
        }
        .badge-data .accent {
            color: var(--color-green);
        }

        /* Filter toolbar */
        .filter-toolbar {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .filter-group {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-muted);
            font-family: var(--font-mono);
            letter-spacing: 0.05em;
            margin-right: 4px;
            text-transform: uppercase;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: var(--radius-full);
            border: 1px solid var(--border-subtle);
            background: transparent;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
            text-decoration: none;
        }
        .filter-chip:hover {
            border-color: var(--color-cyan);
            color: var(--text-primary);
            background: rgba(6, 182, 212, 0.08);
        }
        .filter-chip.active {
            background: var(--gradient-main);
            color: #fff;
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
        }

        /* News list cards */
        .news-list-card {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 24px;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            margin-bottom: 20px;
            position: relative;
            overflow: hidden;
        }
        .news-list-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .news-list-card .news-thumb {
            flex-shrink: 0;
            width: 200px;
            height: 140px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
        }
        .news-list-card .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-list-card:hover .news-thumb img {
            transform: scale(1.05);
        }
        .news-list-card .news-thumb .thumb-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.3) 0%, rgba(6, 182, 212, 0.2) 100%);
            pointer-events: none;
        }
        .news-list-card .news-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-width: 0;
        }
        .news-list-card .news-date {
            font-family: var(--font-mono);
            font-size: 0.78rem;
            color: var(--color-cyan);
            letter-spacing: 0.05em;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-list-card .news-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin: 0;
            letter-spacing: -0.01em;
        }
        .news-list-card .news-summary {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }
        .news-list-card .news-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-cyan);
            text-decoration: none;
            transition: all 0.3s ease;
            align-self: flex-start;
        }
        .news-list-card .news-link:hover {
            color: #34D399;
            gap: 10px;
        }

        /* Hot topics */
        .hot-topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            height: 100%;
            display: flex;
            flex-direction: column;
            gap: 12px;
            position: relative;
            overflow: hidden;
        }
        .hot-topic-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(163, 230, 53, 0.4);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .hot-topic-card .hot-img {
            width: 100%;
            height: 160px;
            border-radius: var(--radius-md);
            overflow: hidden;
        }
        .hot-topic-card .hot-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .hot-topic-card:hover .hot-img img {
            transform: scale(1.05);
        }
        .hot-topic-card .hot-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.72rem;
            font-weight: 700;
            color: var(--color-orange);
            background: rgba(251, 146, 60, 0.12);
            padding: 4px 12px;
            border-radius: var(--radius-full);
            font-family: var(--font-mono);
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .hot-topic-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
            line-height: 1.45;
        }
        .hot-topic-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .tag-cloud .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            padding: 8px 18px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .tag-cloud .tag-item:hover {
            border-color: var(--color-cyan);
            color: var(--text-primary);
            background: rgba(6, 182, 212, 0.1);
            transform: translateY(-2px);
        }
        .tag-cloud .tag-item .count {
            font-family: var(--font-mono);
            font-size: 0.7rem;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.08);
            padding: 2px 8px;
            border-radius: var(--radius-full);
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.2) 0%, rgba(6, 182, 212, 0.16) 100%);
            border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(163, 230, 53, 0.15) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-section p {
            font-size: 0.98rem;
            color: var(--text-secondary);
            max-width: 520px;
            margin-bottom: 24px;
            line-height: 1.75;
        }
        .cta-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 2;
        }
        .cta-form .form-control {
            flex: 1;
            min-width: 260px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            border-radius: 12px;
            padding: 14px 18px;
            color: var(--text-primary);
            font-size: 0.92rem;
            transition: all 0.3s ease;
        }
        .cta-form .form-control::placeholder {
            color: var(--text-muted);
            opacity: 0.7;
        }
        .cta-form .form-control:focus {
            border-color: var(--color-cyan);
            box-shadow: 0 0 16px rgba(6, 182, 212, 0.3);
            background: rgba(255, 255, 255, 0.08);
            outline: none;
            color: var(--text-primary);
        }
        .cta-form .btn-ek {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: #0A0F14;
            border-top: 1px solid var(--border-subtle);
            padding-top: 64px;
            padding-bottom: 0;
            margin-top: var(--section-spacing);
        }
        .site-footer .footer-brand-text {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-top: 12px;
        }
        .site-footer .footer-heading {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }
        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links li a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .site-footer .footer-links li a:hover {
            color: var(--color-cyan);
            transform: translateX(4px);
        }
        .site-footer .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .copyright {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .site-footer .footer-tech-links {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
        }
        .site-footer .footer-tech-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .site-footer .footer-tech-links a:hover {
            color: var(--color-cyan);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            :root {
                --section-spacing: 56px;
                --section-spacing-mobile: 40px;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .category-banner {
                padding: 36px 28px;
                border-radius: var(--radius-lg);
            }
            .category-banner h1 {
                font-size: 2rem;
            }
            .news-list-card {
                flex-direction: column;
                gap: 16px;
                padding: 20px;
            }
            .news-list-card .news-thumb {
                width: 100%;
                height: 180px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-section {
                padding: 36px 28px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .site-footer {
                padding-top: 40px;
            }
        }
        @media (max-width: 767.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .category-banner {
                padding: 28px 20px;
                border-radius: var(--radius-md);
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .news-list-card .news-title {
                font-size: 1.1rem;
            }
            .news-list-card .news-thumb {
                height: 150px;
            }
            .cta-form {
                flex-direction: column;
            }
            .cta-form .form-control {
                min-width: 100%;
            }
            .cta-form .btn-ek {
                width: 100%;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (max-width: 519.98px) {
            .section-title {
                font-size: 1.4rem;
            }
            .category-banner h1 {
                font-size: 1.35rem;
            }
            .badge-data .num {
                font-size: 1.1rem;
            }
            .badge-data {
                padding: 8px 14px;
                font-size: 0.75rem;
            }
            .news-list-card {
                padding: 16px;
            }
            .news-list-card .news-thumb {
                height: 130px;
            }
            .filter-chip {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}