/* roulang page: index */
:root {
            --primary: #7c5cff;
            --primary-hover: #6d35f0;
            --primary-light: #eef0ff;
            --accent: #06b6d4;
            --accent-light: #cffafe;
            --night: #0b1120;
            --night-light: #111a2e;
            --surface: #ffffff;
            --bg-alt: #f6f7fb;
            --text: #14162b;
            --text-muted: #64748b;
            --border: #e6e8f0;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(20, 22, 43, 0.06);
            --shadow-md: 0 8px 30px rgba(20, 22, 43, 0.1);
            --shadow-lg: 0 20px 50px rgba(20, 22, 43, 0.14);
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: #fff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all .25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            outline: none;
        }
        :focus-visible {
            outline: 3px solid rgba(124, 92, 255, .4);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(230, 232, 240, .8);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(20, 22, 43, .08);
        }
        .nav-wrap {
            max-width: 1280px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            padding: 0 32px;
            height: 72px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #7c5cff, #06b6d4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(124, 92, 255, .35);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .5px;
            color: var(--text);
            white-space: nowrap;
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 500;
            color: #4b5563;
            transition: all .25s ease;
        }
        .nav-link:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .cmd-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f1f2f7;
            border: 1px solid transparent;
            border-radius: 12px;
            padding: 8px 14px;
            width: 220px;
            color: #9ca3af;
            font-size: 13px;
            cursor: text;
            transition: all .25s ease;
        }
        .cmd-search:hover {
            background: #fff;
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }
        .cmd-search .kbd {
            font-size: 11px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 5px;
            padding: 1px 6px;
            color: #9ca3af;
            margin-left: auto;
            white-space: nowrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
            box-shadow: 0 4px 16px rgba(124, 92, 255, .25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(124, 92, 255, .35);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(124, 92, 255, .3);
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            padding: 10px 22px;
            border-radius: 12px;
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .btn-ghost:hover {
            background: var(--bg-alt);
            border-color: #cbd5e1;
            transform: translateY(-2px);
        }
        .btn-ghost-light {
            border-color: rgba(255, 255, 255, .35);
            color: #f1f5f9;
        }
        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: rgba(255, 255, 255, .6);
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 12px;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
            box-shadow: 0 4px 20px rgba(255, 255, 255, .25);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(255, 255, 255, .35);
        }
        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            border: 1px solid var(--border);
            background: #fff;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            transition: border-color .2s ease;
        }
        .hamburger:hover {
            border-color: var(--primary);
        }
        .hamburger span {
            width: 18px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .mobile-menu {
            display: none;
            background: #fff;
            padding: 16px 24px 24px;
            border-top: 1px solid var(--border);
            box-shadow: 0 10px 30px rgba(20, 22, 43, .06);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 13px 16px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid #f1f2f7;
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 130px 0 100px;
            color: #fff;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(11, 17, 32, .9) 20%, rgba(11, 17, 32, .6) 58%, rgba(124, 92, 255, .32) 100%);
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, .35), transparent 70%);
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .hero-hero {
            max-width: 700px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 100px;
            padding: 7px 18px;
            font-size: 13px;
            font-weight: 500;
            color: #e2e8f0;
            backdrop-filter: blur(8px);
        }
        .hero-badge i {
            color: #fbbf24;
        }
        .hero-title {
            font-size: 52px;
            font-weight: 800;
            line-height: 1.22;
            margin: 26px 0 20px;
            letter-spacing: 1px;
        }
        .hero-title .gradient {
            background: linear-gradient(90deg, #a78bfa, #22d3ee);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(226, 232, 240, .9);
            margin-bottom: 36px;
            max-width: 580px;
        }
        .hero-trend {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .trend-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(239, 68, 68, .85);
            border-radius: 100px;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            color: #fff;
        }
        .trend-text {
            font-size: 13px;
            color: rgba(226, 232, 240, .8);
            border-bottom: 1px dashed rgba(255, 255, 255, .3);
            padding-bottom: 1px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, .15);
            flex-wrap: wrap;
        }
        .hero-stat h3 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
        }
        .hero-stat p {
            font-size: 13px;
            color: rgba(226, 232, 240, .7);
            margin-top: 4px;
        }

        /* ===== Container / Section ===== */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .section {
            padding: 96px 0;
        }
        .section.alt {
            background: var(--bg-alt);
        }
        .section-header {
            max-width: 720px;
            margin-bottom: 56px;
        }
        .section-header.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 16px;
            border-radius: 100px;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.85;
        }

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card {
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 34px;
            transition: all .35s ease;
            position: relative;
            overflow: hidden;
        }
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .3s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
            border-color: #c7cdf4;
        }
        .card:hover::before {
            opacity: 1;
        }
        .card-icon {
            width: 58px;
            height: 58px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 22px;
        }
        .card-icon.indigo {
            background: #eef0ff;
            color: var(--primary);
        }
        .card-icon.cyan {
            background: #e0faff;
            color: #0891b2;
        }
        .card-icon.amber {
            background: #fffbeb;
            color: #d97706;
        }
        .card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== Process ===== */
        .process-wrap {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .process-step {
            text-align: center;
            padding: 40px 30px 34px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: all .35s ease;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-5px);
        }
        .step-num {
            width: 76px;
            height: 76px;
            margin: 0 auto 22px;
            border-radius: 22px;
            background: linear-gradient(135deg, #7c5cff, #06b6d4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 10px 28px rgba(124, 92, 255, .3);
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .process-progress {
            height: 6px;
            background: #edf0f7;
            border-radius: 100px;
            margin-top: 26px;
            overflow: hidden;
        }
        .process-progress .bar {
            height: 100%;
            border-radius: 100px;
            background: linear-gradient(90deg, #7c5cff, #06b6d4);
        }

        /* ===== Category Feature ===== */
        .category-feature {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 32px;
            align-items: stretch;
        }
        .category-feature-main {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
            box-shadow: var(--shadow-sm);
            transition: all .35s ease;
        }
        .category-feature-main:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
        }
        .category-feature-main img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .category-feature-main::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 17, 32, .15) 30%, rgba(11, 17, 32, .85) 100%);
        }
        .category-feature-body {
            position: relative;
            z-index: 2;
            padding: 36px;
            color: #fff;
        }
        .category-feature-body h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        .category-feature-body p {
            font-size: 14px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 16px;
            max-width: 420px;
            line-height: 1.7;
        }
        .category-feature-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: #a5b4fc;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 8px 18px;
            border-radius: 100px;
            transition: all .3s ease;
        }
        .category-feature-link:hover {
            background: rgba(255, 255, 255, .25);
            color: #fff;
        }
        .category-sub-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .category-sub-card {
            background: #fff;
            border-radius: 16px;
            border: 1px solid var(--border);
            padding: 24px;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .category-sub-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: #c7cdf4;
            transform: translateY(-3px);
        }
        .category-sub-card i {
            font-size: 20px;
            color: var(--primary);
            width: 42px;
            height: 42px;
            background: var(--primary-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .category-sub-card h4 {
            font-size: 15px;
            font-weight: 700;
        }
        .category-sub-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== CMS List ===== */
        .cms-list {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .cms-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 26px 32px;
            border-bottom: 1px solid #eef0f6;
            transition: background .2s ease;
        }
        .cms-item:last-child {
            border-bottom: none;
        }
        .cms-item:hover {
            background: #fafaff;
        }
        .cms-badge {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: 100px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .cms-info {
            flex: 1;
            min-width: 0;
        }
        .cms-title {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 4px;
            transition: color .2s ease;
        }
        .cms-item:hover .cms-title {
            color: var(--primary);
        }
        .cms-excerpt {
            display: block;
            font-size: 13px;
            color: var(--text-muted);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 620px;
        }
        .cms-meta {
            margin-left: auto;
            text-align: right;
            flex-shrink: 0;
        }
        .cms-time {
            font-size: 13px;
            color: #9ca3af;
        }
        .cms-empty {
            padding: 48px 32px;
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-block {
            text-align: center;
            padding: 42px 24px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all .3s ease;
        }
        .stat-block:hover {
            box-shadow: var(--shadow-md);
            border-color: #c7cdf4;
            transform: translateY(-4px);
        }
        .stat-value {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.3;
            background: linear-gradient(135deg, #7c5cff, #06b6d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ===== Cover Grid ===== */
        .cover-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .cover-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            transition: all .35s ease;
        }
        .cover-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: #c7cdf4;
        }
        .cover-thumb {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .cover-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .cover-card:hover .cover-thumb img {
            transform: scale(1.06);
        }
        .cover-thumb .hot-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(239, 68, 68, .92);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 100px;
            backdrop-filter: blur(4px);
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .cover-thumb .hot-tag.green {
            background: rgba(16, 185, 129, .92);
        }
        .cover-thumb .hot-tag.blue {
            background: rgba(59, 130, 246, .92);
        }
        .cover-thumb .hot-tag.amber {
            background: rgba(245, 158, 11, .92);
        }
        .cover-body {
            padding: 22px;
        }
        .cover-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.45;
            transition: color .2s ease;
        }
        .cover-card:hover .cover-body h3 {
            color: var(--primary);
        }
        .cover-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .cover-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: #9ca3af;
        }
        .cover-meta i {
            color: var(--primary);
            font-size: 11px;
        }
        .view-count {
            margin-left: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 880px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .faq-item:hover {
            border-color: #c7cdf4;
        }
        .faq-item.open {
            border-color: #c7cdf4;
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 30px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text);
            transition: color .2s ease;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q i {
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
            font-size: 14px;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
        }
        .faq-a-inner {
            padding: 0 30px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.85;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #0b1120 0%, #1a1040 50%, #0f2341 100%);
            border-radius: var(--radius-lg);
            padding: 60px 64px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 340px;
            height: 340px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 92, 255, .4), transparent 70%);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, .3), transparent 70%);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .cta-desc {
            font-size: 15px;
            color: rgba(226, 232, 240, .8);
            line-height: 1.7;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0d1117;
            color: #94a3b8;
            padding: 64px 0 30px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-text {
            color: #f1f5f9;
        }
        .footer-brand .logo-mark {
            width: 36px;
            height: 36px;
            font-size: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            max-width: 340px;
            margin-top: 14px;
        }
        .footer-col h4 {
            color: #e2e8f0;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            font-size: 14px;
            color: #94a3b8;
        }
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact {
            font-size: 14px;
            line-height: 2;
        }
        .footer-contact i {
            width: 20px;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, .15);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-center {
                display: none;
            }
            .cmd-search {
                width: 160px;
            }
            .hamburger {
                display: flex;
            }
            .feature-grid,
            .category-feature,
            .process-wrap,
            .cover-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-feature {
                grid-template-columns: 1fr;
            }
            .category-feature-main {
                min-height: 320px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-title {
                font-size: 42px;
            }
        }
        @media (max-width: 768px) {
            .nav-wrap {
                padding: 0 20px;
                height: 64px;
            }
            .cmd-search {
                display: none;
            }
            .hero {
                padding: 80px 0 60px;
            }
            .hero-title {
                font-size: 34px;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 40px;
                padding-top: 28px;
            }
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 27px;
            }
            .container {
                padding: 0 20px;
            }
            .btn-primary {
                font-size: 13px;
                padding: 9px 18px;
            }
            .btn-ghost {
                font-size: 13px;
                padding: 9px 18px;
            }
            .cta-section {
                padding: 40px 28px;
            }
            .cms-item {
                flex-wrap: wrap;
                gap: 8px;
                padding: 20px;
            }
            .cms-meta {
                margin-left: 0;
                text-align: left;
            }
            .cms-excerpt {
                white-space: normal;
                -webkit-line-clamp: 2;
                display: -webkit-box;
                -webkit-box-orient: vertical;
            }
            .category-feature-body {
                padding: 28px;
            }
            .stat-value {
                font-size: 30px;
            }
            .faq-q {
                padding: 20px;
                font-size: 15px;
            }
            .faq-a-inner {
                padding: 0 20px 20px;
            }
        }
        @media (max-width: 520px) {
            .feature-grid,
            .category-feature,
            .process-wrap,
            .cover-grid {
                grid-template-columns: 1fr;
            }
            .category-sub-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 27px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-light,
            .hero-actions .btn-ghost-light {
                width: 100%;
                padding: 14px 20px;
                justify-content: center;
            }
            .section-title {
                font-size: 23px;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .hero-stat h3 {
                font-size: 24px;
            }
            .logo-text {
                font-size: 15px;
            }
            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .footer-bottom {
                display: flex;
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: category1 */
:root{
  --primary:#1a6b4a;
  --primary-dark:#145c3f;
  --primary-light:#e8f5ef;
  --secondary:#f59e0b;
  --secondary-dark:#d97706;
  --dark:#0f172a;
  --dark-soft:#1e293b;
  --light:#f8fafc;
  --text:#1e293b;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 4px 20px rgba(0,0,0,0.06);
  --shadow-hover:0 12px 36px rgba(0,0,0,0.10);
  --transition:all 0.3s ease;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;background:var(--light);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;}
a{text-decoration:none;color:inherit;transition:var(--transition);}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px;}
.logo-link{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;color:var(--text);}
.logo-mark{width:38px;height:38px;background:linear-gradient(135deg,var(--primary),#2d9d73);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1rem;flex-shrink:0;}
.nav-center{display:flex;align-items:center;gap:6px;}
.nav-link{display:inline-block;padding:8px 18px;border-radius:999px;font-size:0.9rem;font-weight:500;color:var(--text-weak);transition:var(--transition);}
.nav-link:hover{background:var(--primary-light);color:var(--primary);}
.nav-link.active{background:var(--primary);color:#fff;font-weight:600;}
.header-actions{display:flex;align-items:center;gap:10px;}
.search-box{position:relative;display:flex;align-items:center;}
.search-box input{width:200px;height:36px;border:1px solid var(--border);border-radius:999px;padding:0 36px 0 14px;font-size:0.85rem;background:#f8fafc;outline:none;transition:var(--transition);}
.search-box input:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(26,107,74,0.12);width:220px;}
.search-box i{position:absolute;right:14px;font-size:0.8rem;color:var(--text-weak);pointer-events:none;}
.btn-primary{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#fff;padding:9px 20px;border-radius:999px;font-size:0.9rem;font-weight:600;border:none;transition:var(--transition);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 6px 16px rgba(26,107,74,0.25);}
.btn-outline{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--text);padding:9px 20px;border-radius:999px;font-size:0.9rem;font-weight:600;border:1px solid var(--border);transition:var(--transition);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light);}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;background:var(--secondary);color:#fff;padding:9px 20px;border-radius:999px;font-size:0.9rem;font-weight:600;border:none;transition:var(--transition);}
.btn-secondary:hover{background:var(--secondary-dark);transform:translateY(-1px);box-shadow:0 6px 16px rgba(245,158,11,0.25);}
.mobile-menu-btn{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:1rem;align-items:center;justify-content:center;}
.mobile-menu{display:none;padding:16px 24px;border-top:1px solid var(--border);background:#fff;}
.mobile-menu .nav-link{display:block;padding:12px 16px;border-radius:10px;margin-bottom:4px;color:var(--text);font-size:0.95rem;}
.mobile-menu .nav-link:hover{background:var(--primary-light);color:var(--primary);}
.mobile-menu .nav-link.active{background:var(--primary);color:#fff;}
.page-hero{position:relative;padding:80px 0 70px;background:linear-gradient(135deg,rgba(15,23,42,0.88),rgba(30,41,59,0.75)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;}
.page-hero .breadcrumb{font-size:0.85rem;color:rgba(255,255,255,0.7);margin-bottom:18px;display:flex;gap:10px;align-items:center;}
.page-hero .breadcrumb a{color:rgba(255,255,255,0.8);}
.page-hero .breadcrumb a:hover{color:#fff;}
.page-hero h1{font-size:2.6rem;font-weight:800;line-height:1.2;margin-bottom:16px;letter-spacing:-0.5px;}
.page-hero p{font-size:1.05rem;color:rgba(255,255,255,0.85);max-width:660px;}
.page-hero .hero-badges{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap;}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,0.14);border:1px solid rgba(255,255,255,0.2);padding:6px 14px;border-radius:999px;font-size:0.8rem;font-weight:500;color:#fff;backdrop-filter:blur(4px);}
.page-hero .hero-img{position:absolute;right:60px;bottom:-1px;width:340px;opacity:0.9;border-radius:20px 20px 0 0;box-shadow:0 -10px 40px rgba(0,0,0,0.2);}
.section{padding:80px 0;}
.section-alt{background:#fff;}
.section-header{text-align:center;max-width:720px;margin:0 auto 50px;}
.section-tag{display:inline-flex;align-items:center;gap:6px;background:var(--primary-light);color:var(--primary);padding:6px 16px;border-radius:999px;font-size:0.82rem;font-weight:600;margin-bottom:12px;letter-spacing:0.5px;}
.section-title{font-size:2rem;font-weight:800;color:var(--text);line-height:1.25;letter-spacing:-0.3px;margin-bottom:12px;}
.section-desc{font-size:1rem;color:var(--text-weak);line-height:1.7;}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.guide-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px 24px;transition:var(--transition);position:relative;overflow:hidden;}
.guide-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--transition);}
.guide-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-6px);border-color:var(--primary);}
.guide-card:hover::before{opacity:1;}
.guide-card .card-icon{width:52px;height:52px;border-radius:14px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:18px;}
.guide-card h3{font-size:1.15rem;font-weight:700;color:var(--text);margin-bottom:10px;}
.guide-card p{font-size:0.9rem;color:var(--text-weak);line-height:1.65;}
.steps-section{background:linear-gradient(180deg,#fff,var(--light));}
.steps-wrap{max-width:900px;margin:0 auto;}
.step-row{display:flex;gap:28px;margin-bottom:26px;position:relative;}
.step-row:last-child{margin-bottom:0;}
.step-num{flex-shrink:0;width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.1rem;box-shadow:0 4px 12px rgba(26,107,74,0.3);}
.step-row:not(:last-child)::before{content:'';position:absolute;left:24px;top:52px;bottom:-14px;width:2px;background:linear-gradient(180deg,var(--primary),transparent);}
.step-content{flex:1;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px;transition:var(--transition);}
.step-content:hover{box-shadow:var(--shadow-hover);border-color:var(--primary);}
.step-content h3{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:8px;}
.step-content p{font-size:0.9rem;color:var(--text-weak);line-height:1.7;}
.step-content .step-note{display:inline-flex;align-items:center;gap:6px;background:#fefce8;border:1px solid #fde68a;color:#92400e;padding:4px 12px;border-radius:999px;font-size:0.78rem;margin-top:10px;}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.article-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition);display:flex;flex-direction:column;}
.article-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-6px);}
.article-card .card-img{position:relative;height:170px;overflow:hidden;}
.article-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease;}
.article-card:hover .card-img img{transform:scale(1.05);}
.article-card .card-img .tag-badge{position:absolute;top:12px;left:12px;background:rgba(26,107,74,0.9);color:#fff;padding:4px 12px;border-radius:999px;font-size:0.75rem;font-weight:600;}
.article-card .card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1;}
.article-card .card-body h3{font-size:1rem;font-weight:700;color:var(--text);line-height:1.5;margin-bottom:10px;}
.article-card .card-body p{font-size:0.85rem;color:var(--text-weak);line-height:1.6;margin-bottom:14px;flex:1;}
.article-card .card-footer{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #f1f5f9;padding-top:12px;font-size:0.8rem;color:var(--text-weak);}
.article-card .card-footer .read-more{color:var(--primary);font-weight:600;font-size:0.82rem;display:inline-flex;align-items:center;gap:4px;}
.article-card .card-footer .read-more:hover{gap:8px;}
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:var(--transition);}
.faq-item summary{list-style:none;padding:22px 28px;font-size:1rem;font-weight:600;color:var(--text);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:var(--transition);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--primary-light);}
.faq-item summary .faq-icon{width:28px;height:28px;border-radius:50%;border:2px solid var(--primary);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:0.75rem;flex-shrink:0;transition:var(--transition);}
.faq-item[open] summary .faq-icon{transform:rotate(45deg);background:var(--primary);color:#fff;}
.faq-item .faq-body{padding:0 28px 22px;font-size:0.9rem;color:var(--text-weak);line-height:1.7;border-top:1px solid #f1f5f9;margin-top:0;padding-top:16px;}
.cta-section{position:relative;padding:80px 0;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff;text-align:center;}
.cta-section h2{font-size:2rem;font-weight:800;margin-bottom:16px;}
.cta-section p{font-size:1rem;color:rgba(255,255,255,0.85);max-width:640px;margin:0 auto 28px;}
.cta-section .btn-light{background:#fff;color:var(--primary);padding:12px 30px;border-radius:999px;font-weight:700;font-size:1rem;display:inline-flex;align-items:center;gap:8px;transition:var(--transition);border:none;}
.cta-section .btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,0.15);}
.cta-section .btn-ghost{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.5);padding:10px 30px;border-radius:999px;font-weight:600;font-size:1rem;display:inline-flex;align-items:center;gap:8px;transition:var(--transition);margin-left:12px;}
.cta-section .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,0.1);}
.site-footer{background:var(--dark);color:rgba(255,255,255,0.7);padding:60px 0 0;font-size:0.85rem;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:36px;}
.footer-brand .logo-link{color:#fff;font-size:1.2rem;margin-bottom:16px;}
.footer-brand .logo-link .logo-mark{background:var(--primary);}
.footer-brand p{font-size:0.85rem;line-height:1.7;color:rgba(255,255,255,0.6);max-width:340px;margin-top:8px;}
.footer-col h4{color:#fff;font-size:0.95rem;font-weight:700;margin-bottom:18px;}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col ul li a{color:rgba(255,255,255,0.6);font-size:0.85rem;display:inline-block;transition:var(--transition);}
.footer-col ul li a:hover{color:#fff;padding-left:4px;}
.footer-contact p{display:flex;align-items:center;gap:10px;margin-bottom:10px;color:rgba(255,255,255,0.6);}
.footer-contact i{color:var(--primary);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:0.8rem;color:rgba(255,255,255,0.4);}
.footer-bottom p{margin:0;}
@media(max-width:1024px){
.guide-grid{grid-template-columns:repeat(2,1fr);}
.article-grid{grid-template-columns:repeat(2,1fr);}
.page-hero .hero-img{display:none;}
.footer-grid{grid-template-columns:1fr 1fr;}
}
@media(max-width:768px){
.header-inner{flex-wrap:wrap;height:auto;padding:12px 0;}
.nav-center{display:none;}
.mobile-menu-btn{display:flex;}
.mobile-menu{display:block;}
.header-actions .search-box{display:none;}
.header-actions .btn-primary{padding:8px 14px;}
.page-hero{padding:60px 0;}
.page-hero h1{font-size:2rem;}
.page-hero p{font-size:0.95rem;}
.section{padding:60px 0;}
.section-title{font-size:1.6rem;}
.guide-grid{grid-template-columns:1fr;}
.article-grid{grid-template-columns:1fr 1fr;}
.footer-grid{grid-template-columns:1fr;gap:24px;}
.footer-bottom{flex-direction:column;gap:8px;text-align:center;}
.cta-section h2{font-size:1.6rem;}
.cta-section .btn-ghost{margin-left:0;margin-top:10px;}
}
@media(max-width:520px){
.container{padding:0 16px;}
.page-hero h1{font-size:1.6rem;}
.page-hero .hero-badges{flex-wrap:wrap;}
.article-grid{grid-template-columns:1fr;}
.section-header{margin-bottom:32px;}
.section-title{font-size:1.4rem;}
.step-row{flex-direction:column;gap:12px;}
.step-row:not(:last-child)::before{display:none;}
.step-content{padding:18px 20px;}
.cta-section .btn-light,.cta-section .btn-ghost{width:100%;justify-content:center;margin:6px 0;}
}

/* roulang page: article */
:root {
            --primary: #0f766e;
            --primary-light: #14b8a6;
            --primary-dark: #115e59;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input {
            outline: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-mark {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            color: #fff;
            border-radius: 12px;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(15, 118, 110, 0.3);
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 2px;
            margin: 0 auto;
            padding: 4px;
            background: var(--bg);
            border-radius: 12px;
        }
        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 8px;
            transition: all .2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, 0.08);
        }
        .nav-link.active {
            color: var(--primary-dark);
            background: #fff;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 12px;
            font-size: 14px;
            color: var(--text-muted);
            transition: all .2s ease;
            width: 220px;
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.12);
            background: #fff;
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            width: 100%;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 12px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(15, 118, 110, 0.3);
            transition: all .25s ease;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 118, 110, 0.4);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(20, 184, 166, 0.4);
            outline-offset: 2px;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: #fff;
            color: var(--primary-dark);
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
            transition: all .25s ease;
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 18px;
            color: var(--text);
        }

        .article-hero {
            position: relative;
            padding: 80px 0 56px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.82), rgba(15, 23, 42, 0.65));
            z-index: 1;
        }
        .article-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            padding: 4px 8px;
            border-radius: 6px;
            transition: all .2s;
        }
        .breadcrumb a:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .breadcrumb span {
            color: rgba(255, 255, 255, 0.5);
        }
        .hero-cat {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }
        .article-hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            max-width: 800px;
        }
        .hero-desc {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin-bottom: 28px;
        }
        .hero-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            flex-wrap: wrap;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta i {
            color: var(--accent);
        }

        .article-main {
            padding: 64px 0 40px;
        }
        .article-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 40px;
            align-items: start;
        }
        .article-content {
            min-width: 0;
        }
        .article-cover {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow);
        }
        .article-cover img {
            width: 100%;
            height: auto;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .cover-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 6px 14px;
            background: rgba(15, 118, 110, 0.9);
            color: #fff;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }
        .article-lead {
            background: linear-gradient(135deg, #ccfbf1, #f0fdfa);
            border: 1px solid #99f6e4;
            border-radius: 16px;
            padding: 24px;
            margin-bottom: 28px;
            font-size: 16px;
            line-height: 1.8;
            color: #134e4a;
            border-left: 4px solid var(--primary);
        }
        .article-lead p {
            margin: 0;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: #334155;
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--text);
            margin-top: 32px;
            margin-bottom: 14px;
            font-weight: 700;
            scroll-margin-top: 100px;
        }
        .article-body h2 {
            font-size: 26px;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }
        .article-body h3 {
            font-size: 20px;
        }
        .article-body p {
            margin-bottom: 18px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 18px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body a {
            color: var(--primary);
            border-bottom: 1px solid transparent;
        }
        .article-body a:hover {
            border-color: var(--primary);
        }
        .article-body blockquote {
            border-left: 4px solid var(--accent);
            background: #fffbeb;
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: #78350f;
        }
        .article-body img {
            border-radius: 12px;
            margin: 24px 0;
        }
        .article-body code {
            background: #f1f5f9;
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 14px;
            color: #be185d;
        }
        .article-body pre {
            background: var(--bg-dark);
            color: #e2e8f0;
            padding: 20px;
            border-radius: 12px;
            overflow-x: auto;
            margin: 24px 0;
        }
        .article-tags {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 40px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
        }
        .article-tags h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            margin-right: 4px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 13px;
            color: var(--text-muted);
            transition: all .2s ease;
        }
        .tag:hover {
            background: #fff;
            border-color: var(--primary-light);
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(15, 118, 110, 0.1);
        }

        .article-side {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 92px;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
            padding-right: 4px;
            scrollbar-width: thin;
        }
        .side-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .side-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--bg);
        }
        .side-card h3 i {
            color: var(--primary);
        }
        .rank-list {
            list-style: none;
            counter-reset: rank;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .rank-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px;
            border-radius: 10px;
            transition: all .2s ease;
        }
        .rank-list li:hover {
            background: var(--bg);
        }
        .rank-num {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: var(--bg);
            color: var(--text-muted);
            font-size: 13px;
            font-weight: 700;
        }
        .rank-list li:nth-child(1) .rank-num {
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #fff;
        }
        .rank-list li:nth-child(2) .rank-num {
            background: linear-gradient(135deg, #94a3b8, #64748b);
            color: #fff;
        }
        .rank-list li:nth-child(3) .rank-num {
            background: linear-gradient(135deg, #b45309, #92400e);
            color: #fff;
        }
        .rank-list a {
            font-size: 14px;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .rank-list a:hover {
            color: var(--primary);
        }
        .side-guide-card {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border: none;
            color: #fff;
            text-align: center;
        }
        .side-guide-card h3 {
            color: #fff;
            border-color: rgba(255, 255, 255, 0.2);
        }
        .side-guide-card h3 i {
            color: #fff;
        }
        .side-guide-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: #fff;
            color: var(--primary-dark);
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            transition: all .2s ease;
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        .cta-mini {
            background: linear-gradient(135deg, #fef3c7, #fde68a);
            border: 1px solid #fcd34d;
        }
        .cta-mini h3 {
            color: #78350f;
            border-color: rgba(120, 53, 15, 0.1);
        }
        .cta-mini h3 i {
            color: #b45309;
        }
        .cta-mini p {
            font-size: 14px;
            color: #92400e;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .not-found {
            text-align: center;
            padding: 60px 30px;
            background: #fff;
            border-radius: 20px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .not-found i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .not-found h2 {
            font-size: 24px;
            color: var(--text);
            margin-bottom: 10px;
        }
        .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .related-section {
            padding: 64px 0;
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            gap: 16px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
        }
        .section-head h2 span {
            color: var(--primary);
        }
        .section-more {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .section-more:hover {
            color: var(--primary-dark);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .rel-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all .3s ease;
        }
        .rel-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: rgba(15, 118, 110, 0.2);
        }
        .rel-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 4/3;
        }
        .rel-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .rel-card:hover .rel-cover img {
            transform: scale(1.05);
        }
        .rel-cat {
            position: absolute;
            bottom: 12px;
            left: 12px;
            padding: 4px 10px;
            background: rgba(15, 118, 110, 0.9);
            color: #fff;
            border-radius: 6px;
            font-size: 12px;
        }
        .rel-body {
            padding: 16px;
        }
        .rel-body h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .rel-body h3 a:hover {
            color: var(--primary);
        }
        .rel-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        .faq-section {
            padding: 64px 0;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .2s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item.open {
            border-color: rgba(15, 118, 110, 0.25);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            width: 100%;
            text-align: left;
            transition: all .2s ease;
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q i {
            flex-shrink: 0;
            color: var(--text-muted);
            transition: transform .3s ease;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
        }
        .faq-a-inner {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--bg-dark), #1e293b);
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-badges {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-top: 32px;
            flex-wrap: wrap;
        }
        .cta-badges span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        .cta-badges i {
            color: var(--accent);
        }

        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-link {
            margin-bottom: 14px;
        }
        .footer-brand .logo-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
            margin-top: 12px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all .2s ease;
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
        }
        .footer-contact i {
            color: var(--primary-light);
            width: 18px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 10px;
        }

        .reading-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            width: 0;
            background: linear-gradient(90deg, var(--primary-light), var(--primary));
            z-index: 999;
            transition: width .08s linear;
            border-radius: 0 3px 3px 0;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 12px 24px rgba(15, 23, 42, 0.1);
            padding: 16px;
            z-index: 99;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
        }
        .mobile-menu a.active {
            background: var(--bg);
            color: var(--primary);
        }
        .mobile-menu a:hover {
            background: var(--bg);
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .article-side {
                position: static;
                max-height: none;
                overflow: visible;
                flex-direction: row;
                flex-wrap: wrap;
            }
            .side-card {
                flex: 1 1 calc(50% - 12px);
                min-width: 260px;
            }
            .nav-center {
                display: none;
            }
            .search-box {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .header-right .btn-primary {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }
            .article-hero {
                padding: 48px 0 36px;
            }
            .article-hero h1 {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-meta {
                gap: 14px;
                font-size: 13px;
            }
            .article-main {
                padding: 40px 0 24px;
            }
            .article-body {
                font-size: 15px;
            }
            .related-section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .faq-section,
            .cta-section {
                padding: 48px 0;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-side {
                flex-direction: column;
            }
            .side-card {
                flex: 1 1 100%;
                min-width: 0;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-hero h1 {
                font-size: 24px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .logo-text {
                font-size: 15px;
            }
            .logo-mark {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }
            .hero-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .article-cover {
                border-radius: 14px;
            }
            .article-lead {
                padding: 18px;
                font-size: 14px;
            }
            .article-tags {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-badges {
                flex-direction: column;
                gap: 10px;
            }
        }