/* roulang page: index */
:root {
            --bg-0: #070B14;
            --bg-1: #0B111E;
            --bg-2: #111A2B;
            --surface-glass: rgba(255, 255, 255, 0.05);
            --surface-border: rgba(255, 255, 255, 0.10);
            --primary: #3D7BFF;
            --secondary: #7A5CFF;
            --accent: #35E0FF;
            --success: #2EE6A8;
            --warning: #FFC24B;
            --danger: #FF5C7C;
            --text-primary: #F0F4FF;
            --text-body: #A8B3C7;
            --text-muted: #5F6B82;
            --font-main: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            --container-w: 1200px;
            --gap: 24px;
            --section-space: 100px;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(53, 224, 255, 0.12);
            --grad-brand: linear-gradient(135deg, #3D7BFF, #7A5CFF);
            --grad-text: linear-gradient(90deg, #3D7BFF, #35E0FF);
            --grad-line: linear-gradient(90deg, #3D7BFF, transparent);
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--bg-0);
            color: var(--text-body);
            font-size: 16px;
            line-height: 1.75;
            letter-spacing: 0.01em;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--text-body);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        a:hover {
            color: var(--text-primary);
        }

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol,
        li {
            list-style: none;
        }

        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-space {
            padding: var(--section-space) 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-head .tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.04em;
            color: var(--accent);
            background: rgba(53, 224, 255, 0.08);
            border: 1px solid rgba(53, 224, 255, 0.2);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .section-head p {
            max-width: 640px;
            margin: 12px auto 0;
            font-size: 15px;
            color: var(--text-body);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            box-shadow: 0 0 0 6px rgba(53, 224, 255, 0.15);
        }

        .btn-primary {
            background: var(--grad-brand);
            color: #fff;
            box-shadow: 0 0 20px rgba(61, 123, 255, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(53, 224, 255, 0.5), 0 6px 16px rgba(0, 0, 0, 0.35);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.35);
            color: rgba(255, 255, 255, 0.9);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 20px rgba(53, 224, 255, 0.15);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-lg {
            min-height: 56px;
            padding: 16px 36px;
            font-size: 16px;
        }

        .btn-sm {
            min-height: 40px;
            padding: 8px 20px;
            font-size: 14px;
            border-radius: 8px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.04em;
            padding: 4px 12px;
            border-radius: 100px;
            background: rgba(53, 224, 255, 0.1);
            color: var(--accent);
            border: 1px solid rgba(53, 224, 255, 0.2);
        }

        .badge-purple {
            background: rgba(122, 92, 255, 0.12);
            color: #a78bfa;
            border-color: rgba(122, 92, 255, 0.25);
        }

        .badge-green {
            background: rgba(46, 230, 168, 0.1);
            color: var(--success);
            border-color: rgba(46, 230, 168, 0.2);
        }

        /* ===== 顶部通栏 ===== */
        .topbar {
            background: linear-gradient(90deg, rgba(61, 123, 255, 0.15), rgba(122, 92, 255, 0.1));
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            height: 36px;
            display: flex;
            align-items: center;
            font-size: 13px;
            color: var(--text-body);
            overflow: hidden;
        }

        .topbar .container {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .topbar i {
            color: var(--accent);
            font-size: 12px;
        }

        .topbar .highlight-text {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* ===== 导航栏 ===== */
        .site-header {
            background: rgba(7, 11, 20, 0.88);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            background-image: linear-gradient(rgba(7, 11, 20, 0.88), rgba(7, 11, 20, 0.88)), linear-gradient(90deg, var(--primary), transparent);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            position: sticky;
            top: 0;
            z-index: 100;
            transition: all 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(7, 11, 20, 0.96);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            background: var(--grad-brand);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 0 16px rgba(61, 123, 255, 0.4);
            position: relative;
        }

        .logo-icon::after {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(53, 224, 255, 0.4), transparent);
            z-index: -1;
        }

        .logo-text-block {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .logo-text-main {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
        }

        .logo-text-sub {
            font-size: 12px;
            color: var(--accent);
            letter-spacing: 0.06em;
            font-weight: 500;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .main-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 16px;
            border-radius: 8px;
            position: relative;
            transition: all 0.3s ease;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--grad-text);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }

        .main-nav a:hover {
            color: var(--text-primary);
        }

        .main-nav a:hover::after {
            transform: scaleX(1);
        }

        .main-nav a.active {
            color: var(--accent);
            text-shadow: 0 0 12px rgba(53, 224, 255, 0.5);
        }

        .main-nav a.active::after {
            transform: scaleX(1);
            box-shadow: 0 2px 8px rgba(53, 224, 255, 0.5);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-help-link {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.3s;
        }

        .header-help-link:hover {
            color: var(--text-primary);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--text-primary);
            font-size: 18px;
            transition: all 0.3s;
        }

        .nav-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(7, 11, 20, 0.97);
            -webkit-backdrop-filter: blur(20px);
            backdrop-filter: blur(20px);
            z-index: 99;
            padding: 32px 24px;
            flex-direction: column;
            gap: 8px;
            border-top: 1px solid rgba(53, 224, 255, 0.2);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            font-size: 18px;
            color: var(--text-body);
            padding: 16px;
            border-radius: 12px;
            border: 1px solid transparent;
            transition: all 0.3s;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent);
            background: rgba(53, 224, 255, 0.06);
            border-color: rgba(53, 224, 255, 0.2);
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 85vh;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            position: relative;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 11, 20, 0.92) 0%, rgba(7, 11, 20, 0.7) 50%, rgba(7, 11, 20, 0.4) 100%);
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(0deg, var(--bg-0), transparent);
        }

        .hero-container {
            position: relative;
            z-index: 2;
            width: 100%;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 40px;
            align-items: center;
        }

        .hero-glass-panel {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 48px;
            max-width: 680px;
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .hero-glass-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 20px;
            right: 20px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(53, 224, 255, 0.5), transparent);
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
            background: rgba(53, 224, 255, 0.1);
            border: 1px solid rgba(53, 224, 255, 0.25);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 20px;
        }

        .hero-kicker i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 52px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .hero-subtitle {
            font-size: 18px;
            color: var(--text-body);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .hero-cta-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-trust-row {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .hero-trust-row .trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-row .trust-item i {
            color: var(--success);
            font-size: 14px;
        }

        .hero-side-host {
            display: none;
        }

        .hero-scroll-indicator {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 16px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.05);
            -webkit-backdrop-filter: blur(8px);
            backdrop-filter: blur(8px);
            animation: float-down 2s ease-in-out infinite;
            cursor: pointer;
            transition: all 0.3s;
        }

        .hero-scroll-indicator:hover {
            color: var(--accent);
            border-color: var(--accent);
        }

        @keyframes float-down {
            0%,
            100% {
                transform: translate(-50%, 0);
            }
            50% {
                transform: translate(-50%, 8px);
            }
        }

        /* ===== 核心优势 ===== */
        .features-section {
            background: var(--bg-1);
            position: relative;
        }

        .features-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(53, 224, 255, 0.3), transparent);
        }

        .features-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: var(--gap);
            align-items: stretch;
        }

        .feature-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid var(--surface-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(53, 224, 255, 0.4), transparent);
            opacity: 0;
            transition: opacity 0.4s;
        }

        .feature-card:hover {
            border-color: rgba(53, 224, 255, 0.3);
            box-shadow: var(--shadow-card), var(--shadow-glow);
            transform: translateY(-4px);
        }

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

        .feature-card-large {
            grid-row: span 2;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .feature-card-small {
            padding: 24px;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(61, 123, 255, 0.2), rgba(53, 224, 255, 0.1));
            border: 1px solid rgba(53, 224, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--accent);
            margin-bottom: 20px;
            box-shadow: 0 0 20px rgba(53, 224, 255, 0.1);
        }

        .feature-card-small .feature-icon {
            width: 44px;
            height: 44px;
            font-size: 18px;
            border-radius: 12px;
            margin-bottom: 14px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .feature-card-small h3 {
            font-size: 17px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        .feature-card-small p {
            font-size: 14px;
        }

        .feature-highlight-num {
            font-size: 56px;
            font-weight: 800;
            line-height: 1;
            background: var(--grad-text);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 16px;
        }

        /* ===== 使用流程 时间线 ===== */
        .process-section {
            background: var(--bg-0);
            position: relative;
        }

        .process-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 80px;
            align-items: center;
        }

        .process-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--surface-border);
        }

        .process-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .process-media::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(7, 11, 20, 0.4), transparent 60%);
        }

        .timeline {
            position: relative;
            padding-left: 48px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--secondary), var(--accent));
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -48px;
            top: 4px;
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 2px solid var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 16px rgba(53, 224, 255, 0.4);
            z-index: 1;
        }

        .timeline-item h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .timeline-item p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.6;
            max-width: 480px;
        }

        /* ===== 版本对比 ===== */
        .compare-section {
            background: var(--bg-1);
            position: relative;
        }

        .compare-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: var(--grad-line);
        }

        .compare-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
            align-items: stretch;
        }

        .compare-card {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid var(--surface-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            position: relative;
            transition: all 0.4s ease;
            box-shadow: var(--shadow-card);
        }

        .compare-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }

        .compare-card.recommended {
            border-color: rgba(53, 224, 255, 0.4);
            transform: scale(1.04);
            box-shadow: 0 0 32px rgba(53, 224, 255, 0.15), var(--shadow-card);
            z-index: 2;
        }

        .compare-card.recommended:hover {
            transform: scale(1.04) translateY(-4px);
        }

        .compare-badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, var(--accent), #00B3D6);
            color: #001220;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 18px;
            border-radius: 100px;
            box-shadow: 0 0 16px rgba(53, 224, 255, 0.5);
            white-space: nowrap;
            letter-spacing: 0.03em;
        }

        .compare-card h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            text-align: center;
        }

        .compare-price {
            text-align: center;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .compare-price .price-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-primary);
            display: block;
            line-height: 1.2;
        }

        .compare-features {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 28px;
        }

        .compare-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            padding: 6px 0;
        }

        .compare-feature-item i {
            width: 20px;
            text-align: center;
            font-size: 14px;
        }

        .compare-feature-item .icon-check {
            color: var(--accent);
        }

        .compare-feature-item .icon-times {
            color: var(--text-muted);
            opacity: 0.5;
        }

        .compare-card .btn {
            width: 100%;
            justify-content: center;
        }

        /* ===== 资讯动态 列表 ===== */
        .news-section {
            background: var(--bg-0);
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 960px;
            margin: 0 auto;
        }

        .news-card {
            background: transparent;
            border: 1px solid transparent;
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 20px;
            transition: all 0.3s ease;
        }

        .news-card:hover {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border-color: rgba(53, 224, 255, 0.2);
            box-shadow: var(--shadow-glow);
        }

        .news-thumb {
            width: 140px;
            height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-2);
            border: 1px solid var(--surface-border);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-content {
            flex: 1;
            min-width: 0;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 6px;
        }

        .news-cat {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(53, 224, 255, 0.08);
            padding: 2px 10px;
            border-radius: 100px;
            border-left: 2px solid var(--accent);
        }

        .news-time {
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: block;
            transition: color 0.3s;
        }

        .news-title:hover {
            color: var(--accent);
        }

        .news-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
            transition: color 0.3s;
        }

        .news-link:hover {
            color: var(--accent);
        }

        .news-empty {
            border: 2px dashed rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 60px 24px;
            text-align: center;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.01);
        }

        .news-empty i {
            font-size: 40px;
            margin-bottom: 16px;
            color: var(--text-muted);
            opacity: 0.5;
        }

        .news-empty p {
            font-size: 15px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-1);
            position: relative;
        }

        .faq-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: var(--grad-line);
        }

        .faq-container {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--surface-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.4s ease;
        }

        .faq-item.active {
            border-color: rgba(53, 224, 255, 0.4);
            box-shadow: 0 0 20px rgba(53, 224, 255, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 22px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            transition: all 0.3s;
            user-select: none;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-q-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(53, 224, 255, 0.1);
            border-radius: 8px;
            border: 1px solid rgba(53, 224, 255, 0.2);
        }

        .faq-arrow {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 14px;
            transition: transform 0.4s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            padding: 0 24px;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid transparent;
        }

        .faq-item.active .faq-answer {
            max-height: 240px;
            padding: 16px 24px 20px;
            border-top-color: rgba(53, 224, 255, 0.15);
        }

        /* ===== CTA 区 ===== */
        .cta-section {
            background: var(--bg-0);
            position: relative;
            padding: 80px 0;
            border-top: 1px solid rgba(53, 224, 255, 0.15);
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.25;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(61, 123, 255, 0.2) 0%, transparent 70%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-content p {
            font-size: 16px;
            color: var(--text-body);
            margin-bottom: 36px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #06090F;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 64px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }

        .footer-brand .logo-brand {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            max-width: 300px;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--text-body);
            transition: all 0.3s;
        }

        .footer-social a:hover {
            color: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 0 16px rgba(53, 224, 255, 0.3);
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(53, 224, 255, 0.5);
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-body);
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-col ul li a i {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }

        .footer-contact-item i {
            color: var(--accent);
            margin-top: 4px;
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom .copyright {
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom .legal-links {
            display: flex;
            gap: 24px;
        }

        .footer-bottom .legal-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.3s;
        }

        .footer-bottom .legal-links a:hover {
            color: var(--text-primary);
        }

        /* ===== JSON-LD 样式 ===== */

        /* ===== 响应式 ===== */
        @media (min-width: 640px) and (max-width: 1023px) {
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .feature-card-large {
                grid-row: span 1;
            }
            .compare-grid {
                grid-template-columns: 1fr 1fr;
            }
            .compare-card.recommended {
                order: -1;
                grid-column: span 2;
            }
            .process-layout {
                grid-template-columns: 1fr;
                gap: 48px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 1024px) {
            .hero-side-host {
                display: block;
                width: 280px;
                height: 420px;
                border-radius: var(--radius-lg);
                overflow: hidden;
                box-shadow: var(--shadow-card);
                border: 1px solid rgba(255, 255, 255, 0.1);
                position: relative;
            }

            .hero-side-host img {
                width: 100%;
                height: 100%;
                object-fit: cover;
            }

            .hero-side-host::after {
                content: '';
                position: absolute;
                inset: 0;
                background: linear-gradient(180deg, transparent, rgba(7, 11, 20, 0.3));
            }
        }

        @media (max-width: 1023px) {
            .main-nav,
            .header-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .feature-card-large {
                grid-row: span 1;
            }
        }

        @media (max-width: 639px) {
            .container {
                padding: 0 16px;
            }
            .section-space {
                padding: 64px 0;
            }
            .hero-glass-panel {
                padding: 32px 20px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 16px;
            }
            .hero-cta-row {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-cta-row .btn {
                width: 100%;
            }
            .hero-trust-row {
                gap: 12px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .compare-grid {
                grid-template-columns: 1fr;
            }
            .compare-card.recommended {
                transform: scale(1.02);
            }
            .compare-card.recommended:hover {
                transform: scale(1.02) translateY(-4px);
            }
            .timeline {
                padding-left: 44px;
            }
            .timeline-dot {
                left: -44px;
                width: 34px;
                height: 34px;
            }
            .process-media img {
                min-height: 240px;
            }
            .news-card {
                flex-direction: column;
                padding: 16px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .legal-links {
                justify-content: center;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .faq-question {
                padding: 18px 16px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 14px 16px 18px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-buttons .btn {
                width: 100%;
            }
            .cta-content h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 480px) {
            .logo-text-main {
                font-size: 18px;
            }
            .logo-text-sub {
                font-size: 11px;
            }
            .feature-highlight-num {
                font-size: 44px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
        }

/* roulang page: article */
:root {
    --bg-0: #070B14;
    --bg-1: #0B111E;
    --bg-2: #111A2B;
    --surface-glass: rgba(255,255,255,0.05);
    --surface-border: rgba(255,255,255,0.10);
    --primary: #3D7BFF;
    --secondary: #7A5CFF;
    --accent: #35E0FF;
    --success: #2EE6A8;
    --warning: #FFC24B;
    --danger: #FF5C7C;
    --text-primary: #F0F4FF;
    --text-body: #A8B3C7;
    --text-muted: #5F6B82;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
    --shadow-glow: 0 0 24px rgba(53,224,255,0.12);
    --font-sans: "PingFang SC","Microsoft YaHei","HarmonyOS Sans SC","Source Han Sans SC",system-ui,sans-serif;
    --container: 1200px;
    --gap: 24px;
    --section-space: 100px;
    --transition: 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-sans);
    background: var(--bg-1);
    color: var(--text-body);
    line-height: 1.75;
    font-size: 16px;
    letter-spacing: 0.01em;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text-primary); }
ul, ol { padding-left: 1.25em; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; position: relative; }
h1, h2, h3, h4 { color: var(--text-primary); line-height: 1.25; letter-spacing: -0.02em; }
.section-padding { padding: var(--section-space) 0; }
.gradient-text {
    background: linear-gradient(90deg, #3D7BFF, #35E0FF);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.gradient-line {
    height: 1px;
    background: linear-gradient(90deg, rgba(61,123,255,0.6), rgba(53,224,255,0.3), transparent);
    border: none;
    margin: 0;
}
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .section-tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid rgba(53,224,255,0.3);
    border-radius: 999px;
    color: var(--accent);
    font-size: 13px;
    letter-spacing: 0.08em;
    margin-bottom: 18px;
    background: rgba(53,224,255,0.05);
}
.section-head h2 { font-size: clamp(26px, 3vw, 38px); margin-bottom: 16px; }
.section-head p { color: var(--text-body); font-size: 16px; }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition);
    border: 1px solid transparent;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
}
.btn-primary {
    background: linear-gradient(135deg, #3D7BFF, #7A5CFF);
    color: #fff;
    box-shadow: 0 0 20px rgba(61,123,255,0.4), 0 4px 12px rgba(0,0,0,0.3);
}
.btn-primary:hover {
    background: linear-gradient(135deg, #3D7BFF, #35E0FF);
    box-shadow: 0 0 32px rgba(53,224,255,0.5);
    color: #fff;
    transform: translateY(-2px);
}
.btn-secondary {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.85);
}
.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 18px rgba(53,224,255,0.2);
}
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 14px; border-radius: 8px; }
.btn-outline {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.18);
    color: var(--text-body);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn:focus-visible, a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(53,224,255,0.15);
}
body::-webkit-scrollbar { width: 8px; }
body::-webkit-scrollbar-track { background: var(--bg-1); }
body::-webkit-scrollbar-thumb { background: rgba(61,123,255,0.4); border-radius: 4px; }
body::-webkit-scrollbar-thumb:hover { background: rgba(53,224,255,0.5); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7,11,20,0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(61,123,255,0.25);
    transition: background 0.3s ease, border-color 0.3s ease;
}
.site-header.scrolled {
    background: rgba(7,11,20,0.95);
    border-bottom-color: rgba(53,224,255,0.3);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    gap: 20px;
}
.logo-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    flex-shrink: 0;
}
.logo-brand:hover .logo-icon { box-shadow: 0 0 18px rgba(53,224,255,0.4); }
.logo-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, #3D7BFF, #7A5CFF);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: 0 0 14px rgba(61,123,255,0.35);
    transition: all var(--transition);
}
.logo-text-block { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text-main {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}
.logo-text-sub {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 0.08em;
}
.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
    position: relative;
    color: var(--text-body);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    text-decoration: none;
    transition: color var(--transition);
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #3D7BFF, #35E0FF);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s ease;
}
.main-nav a:hover { color: var(--text-primary); }
.main-nav a:hover::after { transform: scaleX(1); }
.main-nav a.active {
    color: var(--accent);
    text-shadow: 0 0 12px rgba(53,224,255,0.4);
}
.main-nav a.active::after {
    transform: scaleX(1);
    box-shadow: 0 2px 8px rgba(53,224,255,0.5);
}
.header-cta { display: flex; align-items: center; gap: 12px; }
.header-help-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition);
}
.header-help-link:hover { color: var(--text-primary); }
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    color: var(--text-primary);
    font-size: 18px;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.03);
    transition: all var(--transition);
}
.nav-toggle:hover { border-color: var(--accent); color: var(--accent); }

.article-breadcrumb {
    background: linear-gradient(180deg, rgba(17,26,43,0.6), rgba(11,17,30,0.4));
    border-bottom: 1px solid rgba(255,255,255,0.04);
    padding: 16px 0 0;
}
.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
    padding: 0;
    list-style: none;
}
.breadcrumb-list li { display: flex; align-items: center; gap: 8px; }
.breadcrumb-list li + li::before {
    content: '/';
    color: rgba(255,255,255,0.2);
    font-size: 12px;
}
.breadcrumb-list a { color: var(--text-muted); text-decoration: none; transition: color var(--transition); }
.breadcrumb-list a:hover { color: var(--accent); }
.breadcrumb-list .current { color: var(--text-body); }

.article-hero {
    position: relative;
    padding: 50px 0 60px;
    background: var(--bg-2);
    overflow: hidden;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.25;
    z-index: 0;
}
.article-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(7,11,20,0.9) 0%, rgba(7,11,20,0.55) 50%, rgba(7,11,20,0.75) 100%);
    z-index: 1;
}
.article-hero .container { position: relative; z-index: 2; }
.article-hero-content { max-width: 860px; padding: 20px 0; }
.article-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(53,224,255,0.1);
    border: 1px solid rgba(53,224,255,0.3);
    color: var(--accent);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.04em;
    margin-bottom: 18px;
}
.article-hero h1 {
    font-size: clamp(30px, 4vw, 46px);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 18px;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: var(--text-muted);
}
.article-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta-item i { color: var(--accent); opacity: 0.8; font-size: 13px; }

.article-section { padding: 64px 0 40px; position: relative; }
.article-container { max-width: 860px; margin: 0 auto; }
.article-body {
    font-size: 16.5px;
    line-height: 1.9;
    color: var(--text-body);
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    box-shadow: var(--shadow-card);
}
.article-body h2 {
    font-size: clamp(22px, 2.4vw, 30px);
    margin: 40px 0 16px;
    color: var(--text-primary);
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    position: relative;
}
.article-body h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, #3D7BFF, #35E0FF);
    border-radius: 2px;
}
.article-body h3 {
    font-size: 20px;
    margin: 32px 0 14px;
    color: var(--text-primary);
}
.article-body h4 {
    font-size: 17px;
    margin: 24px 0 10px;
    color: var(--text-primary);
}
.article-body p { margin: 0 0 18px; }
.article-body p:last-child { margin-bottom: 0; }
.article-body a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: rgba(53,224,255,0.4);
    transition: color var(--transition), text-decoration-color var(--transition);
}
.article-body a:hover { color: #fff; text-decoration-color: #fff; }
.article-body ul, .article-body ol { margin: 16px 0 20px; padding-left: 1.5em; }
.article-body ul li, .article-body ol li { margin-bottom: 8px; }
.article-body ul li::marker { color: var(--accent); }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: rgba(61,123,255,0.05);
    padding: 18px 24px;
    margin: 24px 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-body);
}
.article-body img {
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.08);
    margin: 24px 0;
    box-shadow: var(--shadow-card);
    max-width: 100%;
    height: auto;
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14.5px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}
.article-body table th {
    background: var(--bg-2);
    color: var(--text-primary);
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.article-body table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.article-body table tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
.article-body pre {
    background: #0D1117;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 20px;
    overflow-x: auto;
    font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
    font-size: 14px;
    line-height: 1.7;
    margin: 24px 0;
}
.article-body code {
    background: rgba(13,17,23,0.8);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 2px 8px;
    border-radius: 5px;
    font-size: 0.9em;
    font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
}
.article-body pre code { background: none; border: none; padding: 0; }

.content-not-found {
    text-align: center;
    padding: 60px 24px;
    background: rgba(255,255,255,0.02);
    border: 1px dashed rgba(255,255,255,0.15);
    border-radius: var(--radius-lg);
}
.content-not-found i { font-size: 42px; color: var(--text-muted); margin-bottom: 16px; }
.content-not-found h3 { font-size: 24px; margin-bottom: 10px; color: var(--text-primary); }
.content-not-found p { color: var(--text-muted); margin-bottom: 24px; }

.article-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.article-tags .tags-label { font-size: 14px; color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }
.article-tags .tag {
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(61,123,255,0.1);
    border: 1px solid rgba(61,123,255,0.25);
    color: var(--text-body);
    font-size: 13px;
    transition: all var(--transition);
}
.article-tags .tag:hover { border-color: var(--accent); color: var(--accent); }

.article-pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 40px;
}
.article-pager a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 20px;
    border-radius: var(--radius-md);
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-body);
    font-size: 14px;
    transition: all var(--transition);
}
.article-pager a:hover {
    border-color: var(--accent);
    background: rgba(53,224,255,0.05);
    box-shadow: var(--shadow-glow);
}
.article-pager .pager-prev { justify-content: flex-start; }
.article-pager .pager-next { justify-content: flex-end; text-align: right; }
.article-pager .pager-label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
.article-pager .pager-title { color: var(--text-primary); font-weight: 500; }
.article-pager i { color: var(--accent); }

.related-section {
    padding: 72px 0 80px;
    background: var(--bg-0);
    border-top: 1px solid rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--gap);
    margin-top: 16px;
}
.related-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    text-decoration: none;
}
.related-card:hover {
    transform: translateY(-4px);
    border-color: rgba(53,224,255,0.35);
    box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 24px rgba(53,224,255,0.1);
}
.related-card-img {
    height: 168px;
    overflow: hidden;
    position: relative;
}
.related-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-img .card-cat {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 2;
    background: rgba(7,11,20,0.75);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(53,224,255,0.3);
    color: var(--accent);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
}
.related-card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.related-card-body h3 { font-size: 17px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; line-height: 1.4; }
.related-card-body p { font-size: 14px; color: var(--text-body); line-height: 1.65; margin-bottom: 14px; flex: 1; }
.related-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-muted);
}
.related-card-meta i { color: var(--accent); font-size: 13px; }
.back-entry {
    text-align: center;
    margin-top: 40px;
}

.article-faq-section { padding: 72px 0; background: var(--bg-1); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item {
    background: linear-gradient(145deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.faq-item:hover { border-color: rgba(255,255,255,0.13); }
.faq-item.open { border-color: rgba(53,224,255,0.4); box-shadow: 0 0 18px rgba(53,224,255,0.08); }
.faq-question {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 20px;
    width: 100%;
    text-align: left;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: color var(--transition);
}
.faq-question .q-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    background: rgba(53,224,255,0.1);
    border: 1px solid rgba(53,224,255,0.25);
}
.faq-question .faq-arrow {
    margin-left: auto;
    color: var(--text-muted);
    transition: transform var(--transition), color var(--transition);
}
.faq-item.open .faq-question .faq-arrow { transform: rotate(180deg); color: var(--accent); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.3s ease;
    padding: 0 20px;
    color: var(--text-body);
    font-size: 15px;
    line-height: 1.75;
}
.faq-item.open .faq-answer {
    max-height: 300px;
    padding: 0 20px 20px;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 16px;
}

.cta-section {
    position: relative;
    padding: 80px 0;
    background: var(--bg-2);
    overflow: hidden;
    border-top: 1px solid rgba(53,224,255,0.2);
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    opacity: 0.18;
}
.cta-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(61,123,255,0.2), transparent 70%);
}
.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 680px;
    margin: 0 auto;
}
.cta-content h2 { font-size: clamp(28px, 3.6vw, 42px); margin-bottom: 16px; }
.cta-content p { font-size: 16px; color: var(--text-body); margin-bottom: 32px; }
.cta-buttons { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-buttons .btn { min-height: 52px; padding: 0 28px; font-size: 16px; }

.site-footer {
    background: #06090F;
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 64px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 44px;
}
.footer-brand p { font-size: 14px; line-height: 1.7; color: var(--text-muted); margin: 18px 0 0; max-width: 340px; }
.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}
.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-muted);
    font-size: 15px;
    transition: all var(--transition);
}
.footer-social a:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 16px rgba(53,224,255,0.2);
    transform: translateY(-2px);
}
.footer-col h4 {
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: linear-gradient(90deg, #3D7BFF, #35E0FF);
    border-radius: 2px;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 14px;
    transition: color var(--transition), gap var(--transition);
}
.footer-col ul a:hover { color: var(--accent); gap: 12px; }
.footer-col ul a i { font-size: 12px; }
.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 12px;
    line-height: 1.6;
}
.footer-contact-item i { color: var(--accent); margin-top: 4px; font-size: 14px; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 20px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p { font-size: 13px; color: var(--text-muted); }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }

@media (max-width: 1024px) {
    .header-inner { height: 70px; }
    .main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(7,11,20,0.96);
        backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px 28px;
        gap: 6px;
        border-bottom: 1px solid rgba(53,224,255,0.2);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.35s ease, opacity 0.3s ease, visibility 0.3s;
        z-index: 999;
        box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
    .main-nav a { width: 100%; padding: 12px 8px; font-size: 16px; border-radius: 8px; }
    .main-nav a::after { display: none; }
    .main-nav a.active { background: rgba(53,224,255,0.08); }
    .nav-toggle { display: inline-flex; }
    .header-cta .header-help-link { display: none; }
    .related-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-body { padding: 32px 28px; }
}

@media (max-width: 768px) {
    .container { padding: 0 16px; }
    .section-padding { padding: 64px 0; }
    .section-head { margin-bottom: 40px; }
    .article-hero { padding: 32px 0 40px; }
    .article-section { padding: 40px 0 32px; }
    .article-hero h1 { font-size: 28px; }
    .article-meta { gap: 12px; flex-wrap: wrap; }
    .article-body { padding: 24px 18px; font-size: 15.5px; }
    .article-pager { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .faq-question { font-size: 15px; padding: 16px; }
    .faq-item.open .faq-answer { padding: 14px 16px 18px; }
    .cta-buttons { flex-direction: column; align-items: stretch; }
    .cta-buttons .btn { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .article-tags { gap: 8px; }
    .article-tags .tag { font-size: 12px; padding: 4px 10px; }
}

@media (max-width: 640px) {
    .header-cta .btn-sm { min-width: 96px; padding: 0 12px; font-size: 13px; }
    .logo-text-main { font-size: 20px; }
    .logo-text-sub { font-size: 11px; }
    .logo-icon { width: 38px; height: 38px; }
    .breadcrumb-list { font-size: 13px; }
}

@media (min-width: 1024px) {
    .related-grid { grid-template-columns: repeat(3, 1fr); }
}

/* roulang page: category1 */
/* ===== CSS Variables ===== */
        :root {
            --bg-0: #070B14;
            --bg-1: #0B111E;
            --bg-2: #111A2B;
            --surface-glass: rgba(255, 255, 255, 0.05);
            --surface-border: rgba(255, 255, 255, 0.10);
            --primary: #3D7BFF;
            --secondary: #7A5CFF;
            --accent: #35E0FF;
            --success: #2EE6A8;
            --warning: #FFC24B;
            --danger: #FF5C7C;
            --text-primary: #F0F4FF;
            --text-body: #A8B3C7;
            --text-muted: #5F6B82;
            --font-family: "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", "Source Han Sans SC", system-ui, sans-serif;
            --gap: 24px;
            --section-space: 100px;
            --radius: 18px;
            --radius-sm: 10px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 0 24px rgba(53, 224, 255, 0.12), 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: all 0.3s ease;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-family);
            background: var(--bg-0);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            letter-spacing: 0.01em;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img { max-width: 100%; display: block; }
        a { color: var(--text-body); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--text-primary); }
        button { font-family: var(--font-family); border: none; background: none; cursor: pointer; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 700; line-height: 1.25; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        ::selection { background: rgba(61, 123, 255, 0.4); color: #fff; }
        :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; box-shadow: 0 0 16px rgba(53, 224, 255, 0.3); }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            min-height: 48px;
            padding: 14px 24px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.02em;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #3D7BFF, #7A5CFF);
            color: #fff !important;
            box-shadow: 0 0 20px rgba(61, 123, 255, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(53, 224, 255, 0.5), 0 4px 16px rgba(0, 0, 0, 0.4);
            transform: translateY(-2px);
            filter: brightness(1.08);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: 0 0 14px rgba(53, 224, 255, 0.3); }
        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
        }
        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 20px rgba(53, 224, 255, 0.15);
            transform: translateY(-2px);
        }
        .btn-sm { min-height: 38px; padding: 8px 16px; font-size: 14px; border-radius: 8px; }
        .btn-lg { min-height: 56px; padding: 16px 36px; font-size: 17px; border-radius: 12px; }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 11, 20, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }
        .site-header::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, rgba(61, 123, 255, 0.6), transparent);
            z-index: -1;
        }
        .site-header.scrolled {
            background: rgba(7, 11, 20, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .logo-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3D7BFF, #7A5CFF);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 16px rgba(61, 123, 255, 0.4);
        }
        .logo-icon i { color: #fff; font-size: 18px; }
        .logo-text-block { display: flex; flex-direction: column; line-height: 1.2; }
        .logo-text-main {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .logo-text-sub {
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            letter-spacing: 0.06em;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            position: relative;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 8px;
            transition: var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        .main-nav a:hover { color: var(--text-primary); }
        .main-nav a:hover::after { transform: scaleX(1); }
        .main-nav a.active {
            color: var(--accent);
            text-shadow: 0 0 12px rgba(53, 224, 255, 0.3);
        }
        .main-nav a.active::after {
            transform: scaleX(1);
            box-shadow: 0 2px 8px rgba(53, 224, 255, 0.5);
        }
        .header-cta { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .header-help-link {
            font-size: 14px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .header-help-link:hover { color: var(--text-primary); }
        .nav-toggle { display: none; width: 42px; height: 42px; border-radius: 8px; align-items: center; justify-content: center; font-size: 18px; color: var(--text-primary); background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.08); }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0 100px;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 11, 20, 0.94) 0%, rgba(7, 11, 20, 0.75) 50%, rgba(7, 11, 20, 0.55) 100%);
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(180deg, transparent, var(--bg-1));
            z-index: 0;
        }
        .banner-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 48px;
        }
        .banner-text { flex: 1; max-width: 680px; }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb i { font-size: 11px; color: var(--text-muted); }
        .breadcrumb span { color: var(--text-body); }
        .banner-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.04em;
            color: var(--accent);
            background: rgba(53, 224, 255, 0.1);
            border: 1px solid rgba(53, 224, 255, 0.25);
            margin-bottom: 18px;
        }
        .page-title {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }
        .page-title .gradient-text {
            background: linear-gradient(90deg, #3D7BFF, #35E0FF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        .banner-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            margin-bottom: 24px;
            max-width: 560px;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: var(--text-body);
        }
        .banner-meta span { display: inline-flex; align-items: center; gap: 6px; }
        .banner-meta i { color: var(--success); }
        .banner-image {
            flex: 0 0 360px;
            max-width: 360px;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 40px rgba(61, 123, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transform: rotate(2deg);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
        }
        .banner-image:hover { transform: rotate(0deg) scale(1.02); box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), 0 0 60px rgba(53, 224, 255, 0.15); }
        .banner-image img { width: 100%; height: 320px; object-fit: cover; }

        /* ===== Category Layout ===== */
        .category-layout { background: var(--bg-1); padding: var(--section-space) 0; position: relative; }
        .category-layout::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(61, 123, 255, 0.4), transparent);
        }
        .category-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        .category-main { min-width: 0; }
        .section-header { margin-bottom: 32px; position: relative; }
        .section-title {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
            position: relative;
            display: inline-block;
        }
        .section-title::before {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 48px;
            height: 3px;
            border-radius: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 12px rgba(53, 224, 255, 0.4);
        }
        .section-desc { font-size: 14px; color: var(--text-muted); margin-top: 12px; }

        /* ===== Content Cards ===== */
        .content-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .content-card {
            position: relative;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--surface-border);
            border-radius: var(--radius);
            padding: 28px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow);
            transition: var(--transition);
            overflow: hidden;
        }
        .content-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(53, 224, 255, 0.4), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .content-card:hover {
            transform: translateY(-6px);
            border-color: rgba(53, 224, 255, 0.3);
            box-shadow: var(--shadow-hover);
        }
        .content-card:hover::before { opacity: 1; }
        .content-card-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(61, 123, 255, 0.2), rgba(122, 92, 255, 0.2));
            border: 1px solid rgba(61, 123, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .content-card:hover .content-card-icon {
            background: linear-gradient(135deg, rgba(61, 123, 255, 0.35), rgba(122, 92, 255, 0.35));
            box-shadow: 0 0 20px rgba(53, 224, 255, 0.2);
        }
        .content-card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .content-card-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .content-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
            transition: var(--transition);
        }
        .content-card-link i { transition: transform 0.3s ease; }
        .content-card-link:hover { color: var(--text-primary); }
        .content-card-link:hover i { transform: translateX(4px); }

        /* ===== Sidebar ===== */
        .category-sidebar { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 24px; }
        .sidebar-widget {
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--surface-border);
            border-radius: var(--radius);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .sidebar-widget:hover { border-color: rgba(53, 224, 255, 0.2); box-shadow: var(--shadow-hover); }
        .sidebar-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 12px;
        }
        .sidebar-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
        .sidebar-list { display: flex; flex-direction: column; gap: 4px; }
        .sidebar-list-item { border-radius: 8px; transition: background 0.2s ease; }
        .sidebar-list-item a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            font-size: 14px;
            color: var(--text-body);
            border-radius: 8px;
            transition: var(--transition);
        }
        .sidebar-list-item a i {
            width: 20px;
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.2s ease;
        }
        .sidebar-list-item a:hover {
            background: rgba(53, 224, 255, 0.08);
            color: var(--accent);
        }
        .sidebar-list-item a:hover i { color: var(--accent); }
        sidebar-contact { display: flex; flex-direction: column; gap: 14px; }
        .sidebar-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.5;
        }
        .sidebar-contact-item i {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(61, 123, 255, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--accent);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .sidebar-note {
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 12px 14px;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-note i { color: var(--warning); flex-shrink: 0; }

        /* ===== Detail Cards ===== */
        .detail-cards-section { background: var(--bg-2); padding: var(--section-space) 0; position: relative; overflow: hidden; }
        .detail-cards-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(53, 224, 255, 0.25), transparent);
        }
        .detail-cards { display: flex; flex-direction: column; gap: 28px; }
        .detail-card {
            display: flex;
            align-items: flex-start;
            gap: 28px;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--surface-border);
            border-radius: var(--radius);
            padding: 32px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .detail-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 0 3px 3px 0;
            opacity: 0.6;
            transition: opacity 0.3s ease;
        }
        .detail-card:hover {
            transform: translateY(-4px);
            border-color: rgba(53, 224, 255, 0.25);
            box-shadow: var(--shadow-hover);
        }
        .detail-card:hover::before { opacity: 1; }
        .detail-icon {
            flex-shrink: 0;
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(61, 123, 255, 0.25), rgba(122, 92, 255, 0.25));
            border: 1px solid rgba(61, 123, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent);
            box-shadow: 0 0 20px rgba(53, 224, 255, 0.1);
        }
        .detail-card-content { flex: 1; min-width: 0; }
        .detail-card-title { font-size: 20px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
        .detail-card-subtitle { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
        .detail-text { font-size: 14px; color: var(--text-body); line-height: 1.7; margin-bottom: 16px; }
        .detail-points { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
        .detail-point {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13px;
            color: var(--text-body);
            line-height: 1.5;
            padding: 10px 14px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.04);
        }
        .detail-point i { color: var(--success); font-size: 13px; margin-top: 2px; flex-shrink: 0; }
        .detail-point b { color: var(--text-primary); font-weight: 500; }

        /* ===== CTA ===== */
        .category-cta {
            position: relative;
            background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
            padding: 80px 0;
            overflow: hidden;
            text-align: center;
        }
        .category-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(61, 123, 255, 0.2), transparent 70%);
            pointer-events: none;
        }
        .category-cta::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(53, 224, 255, 0.4), transparent);
        }
        .cta-content { position: relative; max-width: 720px; margin: 0 auto; }
        .cta-content h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .cta-content p { font-size: 15px; color: var(--text-body); margin-bottom: 32px; }
        .cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

        /* ===== Footer ===== */
        .site-footer {
            background: #06090F;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-top: 16px; }
        .footer-social { display: flex; gap: 12px; margin-top: 20px; }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-body);
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: rgba(53, 224, 255, 0.1);
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 16px rgba(53, 224, 255, 0.2);
            transform: translateY(-3px);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 18px;
            position: relative;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .footer-col ul li a i { font-size: 11px; color: var(--text-muted); }
        .footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-contact { display: flex; flex-direction: column; gap: 12px; }
        .footer-contact-item { display: flex; align-items: flex-start; gap: 10px; font-size: 13px; color: var(--text-muted); line-height: 1.5; }
        .footer-contact-item i { width: 28px; height: 28px; border-radius: 6px; background: rgba(61, 123, 255, 0.1); display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--accent); flex-shrink: 0; margin-top: 1px; }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p { font-size: 13px; color: var(--text-muted); }
        .footer-bottom-links { display: flex; gap: 20px; }
        .footer-bottom-links a { font-size: 13px; color: var(--text-muted); }
        .footer-bottom-links a:hover { color: var(--accent); }

        /* ===== Animations ===== */
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        .page-banner .banner-text { animation: fadeInUp 0.6s ease-out; }
        .banner-image { animation: fadeInUp 0.8s ease-out 0.1s both; }
        .content-card { animation: fadeInUp 0.5s ease-out both; }
        .content-card:nth-child(2) { animation-delay: 0.05s; }
        .content-card:nth-child(3) { animation-delay: 0.1s; }
        .content-card:nth-child(4) { animation-delay: 0.15s; }
        .content-card:nth-child(5) { animation-delay: 0.2s; }
        .content-card:nth-child(6) { animation-delay: 0.25s; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            :root { --section-space: 70px; }
            .banner-content { flex-direction: column; gap: 32px; }
            .banner-image { flex: 0 0 auto; max-width: 100%; width: 100%; }
            .banner-image img { height: 240px; width: 100%; }
            .category-grid { grid-template-columns: 1fr 260px; gap: 28px; }
            .content-cards { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .detail-card { flex-direction: column; gap: 20px; }
        }
        @media (max-width: 768px) {
            :root { --section-space: 56px; }
            .header-inner { height: 64px; }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(7, 11, 20, 0.96);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4);
                z-index: 999;
            }
            .main-nav a { display: block; padding: 12px 14px; font-size: 15px; border-radius: 8px; }
            .main-nav a:hover { background: rgba(255, 255, 255, 0.05); }
            .main-nav a::after { display: none; }
            .main-nav a.active { background: rgba(53, 224, 255, 0.08); }
            .nav-toggle { display: flex; }
            .header-cta .header-help-link { display: none; }
            .site-header.nav-open .main-nav { display: flex; }
            .category-grid { grid-template-columns: 1fr; }
            .category-sidebar { position: static; }
            .page-banner { padding: 48px 0 64px; }
            .banner-text { max-width: 100%; }
            .cta-buttons { flex-direction: column; align-items: center; }
            .cta-buttons .btn { width: 100%; max-width: 280px; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .detail-points { grid-template-columns: 1fr; }
            .content-card { padding: 22px; }
            .detail-card { padding: 24px; }
        }
        @media (max-width: 640px) {
            .container { padding: 0 16px; }
            .logo-text-main { font-size: 16px; }
            .logo-icon { width: 34px; height: 34px; }
            .page-title { font-size: 28px; }
            .banner-image img { height: 180px; }
            .banner-meta { gap: 12px; }
            .header-cta .btn-sm { padding: 6px 12px; font-size: 13px; min-height: 34px; }
        }
        @media (max-width: 480px) {
            .header-cta .btn-sm { display: none; }
            .section-title { font-size: 22px; }
        }