/* roulang page: index */
:root {
            --color-bg: #0B0E13;
            --color-surface: #141920;
            --color-surface-2: #1C232D;
            --color-border: #2A3441;
            --color-text: #E8EBEF;
            --color-text-muted: #9AA7B5;
            --color-primary: #FF5C28;
            --color-accent: #FFB000;
            --color-lime: #C8F04A;
            --radius-sm: 10px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, .35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
        }
        *, *::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(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 1rem;
            min-height: 100vh;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        button {
            font: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input, textarea {
            font: inherit;
        }
        ul, ol {
            list-style: none;
        }
        :focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        ::selection {
            background: rgba(255, 92, 40, .3);
        }
        ::-webkit-scrollbar {
            width: 10px;
            height: 10px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #3b4754;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .grid {
            display: grid;
        }
        .flex {
            display: flex;
        }
        .flex-col {
            flex-direction: column;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .items-center {
            align-items: center;
        }
        .items-end {
            align-items: flex-end;
        }
        .justify-between {
            justify-content: space-between;
        }
        .justify-center {
            justify-content: center;
        }
        .gap-3 {
            gap: .75rem;
        }
        .gap-4 {
            gap: 1rem;
        }
        .gap-6 {
            gap: 1.5rem;
        }
        .gap-8 {
            gap: 2rem;
        }
        .gap-10 {
            gap: 2.5rem;
        }
        .space-y-16 > * + * {
            margin-top: 4rem;
        }
        .md\:grid-cols-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .md\:grid-cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .md\:grid-cols-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .lg\:grid-cols-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .lg\:col-span-2 {
            grid-column: span 2;
        }
        .max-w-2xl {
            max-width: 42rem;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }
        .text-center {
            text-align: center;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(11, 14, 19, .9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .brand {
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: -.02em;
            color: var(--color-text);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .brand-dot {
            color: var(--color-primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            padding: 10px 16px;
            border-radius: 10px;
            font-size: .95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all .2s ease;
        }
        .nav-link:hover {
            color: var(--color-text);
            background: var(--color-surface-2);
        }
        .nav-link.active {
            color: var(--color-primary);
            background: rgba(255, 92, 40, .08);
        }
        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-form {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-form input {
            width: 320px;
            height: 40px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface-2);
            padding: 0 14px 0 38px;
            color: var(--color-text);
            font-size: .9rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .search-form input::placeholder {
            color: var(--color-text-muted);
        }
        .search-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 176, 0, .15);
            outline: none;
        }
        .search-icon {
            position: absolute;
            left: 13px;
            color: var(--color-text-muted);
            pointer-events: none;
            font-size: 1rem;
            line-height: 1;
        }
        .dropdown {
            position: relative;
        }
        .dropdown-btn {
            display: flex;
            align-items: center;
            gap: 6px;
            height: 40px;
            padding: 0 12px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface-2);
            color: var(--color-text-muted);
            font-size: .875rem;
            transition: border-color .2s ease, color .2s ease, background .2s ease;
        }
        .dropdown-btn:hover {
            border-color: var(--color-border);
            color: var(--color-text);
            background: var(--color-surface-2);
        }
        .dropdown-menu {
            display: none;
            position: absolute;
            right: 0;
            top: 48px;
            min-width: 140px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 6px;
            box-shadow: var(--shadow-card);
            z-index: 40;
        }
        .dropdown:hover .dropdown-menu,
        .dropdown:focus-within .dropdown-menu {
            display: block;
        }
        .dropdown-menu a {
            display: block;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: .875rem;
            color: var(--color-text-muted);
        }
        .dropdown-menu a:hover {
            background: var(--color-surface-2);
            color: var(--color-text);
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            background: var(--color-surface-2);
        }
        .hero {
            position: relative;
            padding: 120px 0 80px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .25;
            z-index: 0;
        }
        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 19, .6) 0%, var(--color-bg) 100%);
        }
        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
            gap: 56px;
            align-items: center;
        }
        .hero-content {
            max-width: 640px;
        }
        .hero-badge {
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -.02em;
            margin-bottom: 20px;
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            max-width: 540px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 40px;
        }
        .hero-stats {
            border-top: 1px solid var(--color-border);
            padding-top: 24px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .stat-item .stat-num {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--color-primary);
            font-variant-numeric: tabular-nums;
        }
        .stat-item .stat-label {
            font-size: .875rem;
            color: var(--color-text-muted);
        }
        .hero-visual-frame {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }
        .hero-visual-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 14, 19, .7));
            pointer-events: none;
        }
        .hero-card {
            position: absolute;
            left: 20px;
            bottom: 20px;
            right: 20px;
            background: rgba(20, 25, 32, .85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 16px 20px;
        }
        .hero-card p {
            margin: 6px 0 0;
            font-size: .95rem;
            color: var(--color-text);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: rgba(255, 176, 0, .1);
            color: var(--color-accent);
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .02em;
            border: 1px solid rgba(255, 176, 0, .25);
        }
        .section {
            padding: 100px 0;
            position: relative;
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -.02em;
            margin: 10px 0 14px;
            line-height: 1.2;
        }
        .section-head p {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 640px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 12px;
            font-size: .95rem;
            font-weight: 600;
            line-height: 1.2;
            transition: all .2s ease;
            border: 1px solid transparent;
            min-height: 44px;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #0B0E13;
        }
        .btn-primary:hover {
            background: #ff7a4d;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 92, 40, .25);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            border-color: var(--color-border);
            color: var(--color-text);
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            position: relative;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-top: 3px solid var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all .25s ease;
            overflow: hidden;
        }
        .feature-card:hover {
            border-color: var(--color-border);
            border-top-color: var(--color-primary);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .feature-card.wide {
            grid-column: span 2;
        }
        .feature-index {
            position: absolute;
            top: 18px;
            right: 24px;
            font-size: 2.4rem;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(255, 255, 255, .12);
            line-height: 1;
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(255, 92, 40, .1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 20px;
            color: var(--color-primary);
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .feature-card p {
            color: var(--color-text-muted);
            font-size: .95rem;
            line-height: 1.65;
        }
        .content-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all .25s ease;
        }
        .content-card:hover {
            border-color: var(--color-border);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .content-card:hover .card-img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 24px;
        }
        .card-meta {
            font-size: .8rem;
            color: var(--color-text-muted);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 999px;
            background: rgba(255, 176, 0, .12);
            color: var(--color-accent);
            font-size: .75rem;
            font-weight: 600;
        }
        .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 10px;
        }
        .card-body p {
            font-size: .9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .scenario-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .scene-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
        }
        .scene-img img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .scene-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 24px;
        }
        .scene-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--color-text-muted);
        }
        .scene-list li .check {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(255, 176, 0, .15);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .75rem;
        }
        .stats-band {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            margin-bottom: 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-block {
            display: flex;
            flex-direction: column;
            gap: 6px;
            align-items: center;
            text-align: center;
        }
        .stat-block .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            font-variant-numeric: tabular-nums;
        }
        .stat-block span:last-child {
            font-size: .875rem;
            color: var(--color-text-muted);
        }
        .timeline {
            position: relative;
            margin-top: 32px;
            padding-left: 24px;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 1px;
            background: var(--color-border);
        }
        .timeline-item {
            position: relative;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .timeline-item:last-child {
            border-bottom: none;
        }
        .timeline-dot {
            position: absolute;
            left: -24px;
            top: 22px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 3px solid var(--color-bg);
            box-shadow: 0 0 0 2px var(--color-accent);
            transition: transform .2s ease, box-shadow .2s ease;
        }
        .timeline-date {
            display: block;
            font-size: .8rem;
            color: var(--color-text-muted);
            margin-bottom: 4px;
            font-variant-numeric: tabular-nums;
        }
        .timeline-content h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .timeline-content p {
            font-size: .9rem;
            color: var(--color-text-muted);
        }
        .timeline-item:hover .timeline-dot {
            transform: scale(1.15);
            box-shadow: 0 0 0 4px rgba(255, 176, 0, .25);
        }
        .testimonial-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
            transition: all .25s ease;
        }
        .testimonial-card::before {
            content: "\201C";
            position: absolute;
            top: 12px;
            right: 20px;
            font-size: 3rem;
            color: var(--color-border);
            font-family: Georgia, serif;
            line-height: 1;
        }
        .testimonial-card:hover {
            border-color: var(--color-border);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .testimonial-card p {
            font-size: .95rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }
        .testimonial-author {
            font-size: .85rem;
            color: var(--color-accent);
            font-weight: 600;
        }
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: stretch;
            margin-bottom: 24px;
        }
        .pricing-card {
            position: relative;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            transition: all .25s ease;
        }
        .pricing-card:hover {
            border-color: var(--color-border);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
        }
        .pricing-card.featured {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 1px rgba(255, 92, 40, .2), var(--shadow-card);
        }
        .pricing-card .badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
        }
        .price {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            margin: 16px 0 20px;
            font-variant-numeric: tabular-nums;
        }
        .price span {
            font-size: .9rem;
            color: var(--color-text-muted);
            font-weight: 400;
        }
        .price-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 28px;
            flex-grow: 1;
        }
        .price-list li {
            display: flex;
            gap: 8px;
            align-items: center;
            color: var(--color-text-muted);
        }
        .price-list li::before {
            content: "\2713";
            color: var(--color-accent);
            font-weight: 700;
        }
        .pricing-note {
            text-align: center;
            color: var(--color-text-muted);
            font-size: .85rem;
        }
        .news-item {
            display: flex;
            gap: 16px;
            align-items: baseline;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-date {
            flex-shrink: 0;
            font-size: .8rem;
            color: var(--color-text-muted);
            font-variant-numeric: tabular-nums;
        }
        .news-item a {
            font-weight: 500;
            transition: color .2s ease;
        }
        .news-item a:hover {
            color: var(--color-primary);
        }
        .news-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .side-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
        }
        .side-card h3 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .side-card p {
            font-size: .875rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-link {
            display: inline-flex;
            padding: 6px 12px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            font-size: .8rem;
            color: var(--color-text-muted);
            transition: all .2s ease;
        }
        .tag-link:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .side-card ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .side-card ul a {
            color: var(--color-text-muted);
            font-size: .9rem;
        }
        .side-card ul a:hover {
            color: var(--color-primary);
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            background: var(--color-surface);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color .25s ease;
        }
        .faq-item[open] {
            border-color: var(--color-accent);
            border-left: 3px solid var(--color-accent);
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            transition: color .2s ease;
            font-size: .95rem;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\203A";
            font-size: 1.6rem;
            color: var(--color-accent);
            transition: transform .3s ease;
            font-weight: 400;
            line-height: 1;
        }
        .faq-item[open] summary::after {
            transform: rotate(90deg);
        }
        .faq-item p {
            padding: 0 24px 20px;
            color: var(--color-text-muted);
            font-size: .95rem;
        }
        .cta-section {
            position: relative;
            padding: 120px 0;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .cta-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 14, 19, .82), rgba(11, 14, 19, .94));
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
        }
        .cta-inner h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -.02em;
            margin-bottom: 16px;
        }
        .cta-inner p {
            color: var(--color-text-muted);
            margin-bottom: 32px;
            font-size: 1.05rem;
        }
        .site-footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding-top: 64px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 40px;
        }
        .footer-top .brand {
            font-size: 1.4rem;
        }
        .footer-top h3 {
            font-size: .9rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-top p {
            color: var(--color-text-muted);
            font-size: .875rem;
            line-height: 1.6;
        }
        .footer-top ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-top ul a {
            color: var(--color-text-muted);
            font-size: .875rem;
        }
        .footer-top ul a:hover {
            color: var(--color-accent);
        }
        .subscribe-form {
            display: flex;
            gap: 8px;
            margin-top: 12px;
        }
        .subscribe-form input {
            flex: 1;
            min-width: 0;
            height: 44px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-bg);
            padding: 0 14px;
            color: var(--color-text);
            font-size: .875rem;
        }
        .subscribe-form input:focus {
            border-color: var(--color-accent);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 176, 0, .12);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            padding: 20px 0;
            border-top: 1px solid var(--color-border);
            font-size: .875rem;
            color: var(--color-text-muted);
        }
        .footer-bottom a {
            color: var(--color-text-muted);
            margin-left: 16px;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .doc-wrap {
            padding-top: 48px;
            padding-bottom: 96px;
            display: flex;
            gap: 48px;
            align-items: flex-start;
        }
        .doc-sidebar {
            width: 280px;
            flex-shrink: 0;
            position: sticky;
            top: 96px;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
            padding-right: 8px;
        }
        .sidebar-search {
            margin-bottom: 24px;
        }
        .sidebar-search input {
            width: 100%;
            height: 40px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface-2);
            padding: 0 14px;
            color: var(--color-text);
            font-size: .875rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .sidebar-search input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 176, 0, .15);
            outline: none;
        }
        .side-nav-group {
            margin: 24px 0 8px;
            font-size: .75rem;
            font-weight: 700;
            color: var(--color-text-muted);
            letter-spacing: .08em;
            text-transform: uppercase;
        }
        .side-nav-group:first-child {
            margin-top: 0;
        }
        .side-link {
            display: block;
            padding: 9px 14px 9px 18px;
            border-radius: 10px;
            font-size: .9rem;
            color: var(--color-text-muted);
            border-left: 3px solid transparent;
            transition: all .2s ease;
            margin-bottom: 2px;
        }
        .side-link:hover {
            background: var(--color-surface-2);
            color: var(--color-text);
        }
        .side-link.active {
            background: var(--color-surface-2);
            color: var(--color-primary);
            border-left-color: var(--color-primary);
        }
        .sidebar-badge {
            margin-top: 32px;
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 12px;
            background: rgba(255, 176, 0, .1);
            border: 1px solid rgba(255, 176, 0, .25);
            color: var(--color-accent);
            font-size: .8rem;
            font-weight: 600;
        }
        .doc-main {
            flex: 1;
            min-width: 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .85rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .doc-main h1 {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.02em;
            margin-bottom: 16px;
        }
        .doc-desc {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .filter-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .filter-tabs {
            display: flex;
            gap: 8px;
        }
        .filter-btn {
            padding: 8px 18px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            background: var(--color-surface-2);
            color: var(--color-text-muted);
            font-size: .875rem;
            transition: all .2s ease;
        }
        .filter-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-text);
        }
        .filter-btn.active {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #0B0E13;
            font-weight: 600;
        }
        .filter-count {
            font-size: .85rem;
            color: var(--color-text-muted);
        }
        .doc-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-bottom: 40px;
        }
        .doc-row {
            display: flex;
            gap: 20px;
            align-items: center;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 18px 20px;
            transition: all .25s ease;
        }
        .doc-row:hover {
            border-left: 3px solid var(--color-primary);
            transform: translateX(4px);
            box-shadow: var(--shadow-card);
        }
        .doc-thumb {
            width: 120px;
            height: 90px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
        }
        .doc-row-content {
            flex: 1;
            min-width: 0;
        }
        .doc-row-content h2 {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 6px;
            transition: color .2s ease;
        }
        .doc-row:hover .doc-row-content h2 {
            color: var(--color-primary);
        }
        .doc-row-content p {
            font-size: .875rem;
            color: var(--color-text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .doc-row-meta {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 8px;
            flex-shrink: 0;
        }
        .doc-row-meta time {
            font-size: .8rem;
            color: var(--color-text-muted);
        }
        .pagination {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .page-link {
            min-width: 44px;
            height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface);
            color: var(--color-text-muted);
            font-size: .9rem;
            padding: 0 10px;
            transition: all .2s ease;
        }
        .page-link:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
        }
        .page-link.active {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #0B0E13;
            font-weight: 700;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: .9rem;
        }
        th, td {
            padding: 10px 12px;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        th {
            background: var(--color-surface-2);
            color: var(--color-text);
        }
        code {
            font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
            background: var(--color-surface-2);
            border: 1px solid var(--color-border);
            padding: 2px 6px;
            border-radius: 6px;
            font-size: .875em;
        }
        pre {
            background: var(--color-surface-2);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 16px;
            overflow-x: auto;
            margin: 24px 0;
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--color-bg);
                border-bottom: 1px solid var(--color-border);
                padding: 12px 24px;
                flex-direction: column;
                gap: 8px;
                z-index: 40;
            }
            .main-nav.open {
                display: flex;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero {
                padding: 80px 0 56px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-visual {
                max-width: 520px;
            }
            .scenario-block {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-card.wide {
                grid-column: span 2;
            }
            .pricing-grid {
                grid-template-columns: 1fr;
                gap: 24px;
                max-width: 520px;
                margin-left: auto;
                margin-right: auto;
            }
            .doc-wrap {
                display: block;
            }
            .doc-sidebar {
                width: 100%;
                position: static;
                max-height: none;
                margin-bottom: 32px;
                padding-right: 0;
            }
            .side-nav {
                display: flex;
                flex-wrap: nowrap;
                overflow-x: auto;
                gap: 8px;
                padding-bottom: 10px;
            }
            .side-nav-group {
                display: none;
            }
            .side-link {
                border-left: none;
                padding: 8px 16px;
                white-space: nowrap;
                border-radius: 999px;
                border: 1px solid var(--color-border);
                margin-bottom: 0;
            }
            .side-link.active {
                border-color: var(--color-primary);
                background: rgba(255, 92, 40, .08);
                color: var(--color-primary);
            }
            .sidebar-search {
                display: none;
            }
            .sidebar-badge {
                display: none;
            }
            .doc-row {
                flex-wrap: wrap;
            }
            .doc-row-meta {
                flex-direction: row;
                align-items: center;
                width: 100%;
                padding-left: 140px;
            }
            .footer-top {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px 16px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-card.wide {
                grid-column: span 1;
            }
            .stats-band {
                padding: 24px 16px;
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .timeline {
                padding-left: 20px;
            }
            .timeline-dot {
                left: -20px;
            }
            .footer-bottom {
                flex-direction: column;
                justify-content: center;
                text-align: center;
            }
            .doc-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px;
            }
            .doc-thumb {
                width: 100%;
                height: 160px;
            }
            .doc-row-meta {
                width: 100%;
                padding-left: 0;
                flex-direction: row;
                justify-content: space-between;
            }
            .page-num {
                display: none;
            }
            .search-form {
                flex: 1;
            }
            .search-form input {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: 56px 0;
            }
            .hero-title {
                font-size: 1.65rem;
            }
            .content-card .card-img {
                height: 160px;
            }
            .scene-img img {
                height: 220px;
            }
            .news-item {
                flex-direction: column;
                gap: 4px;
            }
            .footer-top {
                grid-template-columns: 1fr;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .cta-section {
                padding: 72px 0;
            }
            .cta-inner h2 {
                font-size: 1.6rem;
            }
            .doc-main h1 {
                font-size: 1.5rem;
            }
            .filter-bar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category1 */
:root {
            --color-bg: #0B0E13;
            --color-surface: #141920;
            --color-surface-2: #1C232D;
            --color-border: #2A3441;
            --color-text: #E8EBEF;
            --color-text-muted: #9AA7B5;
            --color-primary: #FF5C28;
            --color-accent: #FFB000;
            --color-lime: #C8F04A;
            --radius-sm: 10px;
            --radius-lg: 16px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, .35);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
        }

        *,
        *::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(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 1rem;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }

        button {
            font: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input {
            font: inherit;
        }

        h1, h2, h3, h4 {
            line-height: 1.3;
            letter-spacing: -0.01em;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--color-text-muted);
        }

        :focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ═══════════ Header ═══════════ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(11, 14, 19, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            height: 72px;
            display: flex;
            align-items: center;
        }

        .header-inner {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .brand {
            font-size: 1.45rem;
            font-weight: 800;
            letter-spacing: -.02em;
            color: var(--color-text);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .brand-dot {
            color: var(--color-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            padding: 10px 16px;
            border-radius: 10px;
            font-size: .95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            transition: all .2s ease;
        }

        .nav-link:hover {
            color: var(--color-text);
            background: var(--color-surface-2);
        }

        .nav-link.active {
            color: var(--color-primary);
            background: rgba(255, 92, 40, .08);
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .search-form {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-form input {
            width: 280px;
            height: 40px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface-2);
            padding: 0 14px 0 38px;
            color: var(--color-text);
            font-size: .9rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .search-form input::placeholder {
            color: var(--color-text-muted);
        }

        .search-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 176, 0, .15);
            outline: none;
        }

        .search-icon {
            position: absolute;
            left: 13px;
            color: var(--color-text-muted);
            pointer-events: none;
            font-size: 1rem;
            line-height: 1;
        }

        .select-menu {
            position: relative;
        }

        .select-trigger {
            display: flex;
            align-items: center;
            gap: 6px;
            height: 40px;
            padding: 0 12px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface-2);
            color: var(--color-text-muted);
            font-size: .875rem;
            transition: border-color .2s ease, color .2s ease, background .2s ease;
        }

        .select-trigger:hover {
            border-color: var(--color-border);
            color: var(--color-text);
            background: var(--color-surface-2);
        }

        .select-dropdown {
            display: none;
            position: absolute;
            right: 0;
            top: 48px;
            min-width: 140px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            padding: 6px;
            box-shadow: var(--shadow-card);
            z-index: 40;
            list-style: none;
        }

        .select-menu:hover .select-dropdown,
        .select-menu:focus-within .select-dropdown {
            display: block;
        }

        .select-dropdown a {
            display: block;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: .875rem;
            color: var(--color-text-muted);
        }

        .select-dropdown a:hover {
            background: var(--color-surface-2);
            color: var(--color-text);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            border: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            transition: background .2s ease;
        }

        .nav-toggle:hover {
            background: var(--color-surface-2);
        }

        /* ═══════════ 文档布局 ═══════════ */
        .doc-layout {
            display: flex;
            gap: 32px;
            padding-top: 32px;
            padding-bottom: 80px;
            align-items: flex-start;
        }

        .doc-sidebar {
            width: 280px;
            flex-shrink: 0;
            position: sticky;
            top: 96px;
            align-self: flex-start;
            max-height: calc(100vh - 120px);
            overflow-y: auto;
            padding-right: 4px;
        }

        .doc-search {
            position: relative;
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .doc-search input {
            width: 100%;
            height: 42px;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            background: var(--color-surface-2);
            padding: 0 14px 0 38px;
            color: var(--color-text);
            font-size: .9rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .doc-search input::placeholder {
            color: var(--color-text-muted);
        }

        .doc-search input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 176, 0, .15);
            outline: none;
        }

        .doc-nav {
            display: flex;
            flex-direction: column;
            gap: 22px;
        }

        .doc-nav-group h3 {
            font-size: .8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: .08em;
            color: var(--color-text-muted);
            margin-bottom: 10px;
            padding-left: 12px;
        }

        .doc-nav-group ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .doc-nav-group a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 8px;
            font-size: .9rem;
            color: var(--color-text-muted);
            transition: all .2s ease;
            border-left: 3px solid transparent;
        }

        .doc-nav-group a:hover {
            color: var(--color-text);
            background: var(--color-surface-2);
        }

        .doc-nav-group a.active {
            color: var(--color-primary);
            background: var(--color-surface-2);
            border-left-color: var(--color-primary);
            font-weight: 600;
        }

        .doc-sidebar-badge {
            margin-top: 28px;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 14px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 10px;
            font-size: .8rem;
            color: var(--color-text-muted);
        }

        .update-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-lime);
            flex-shrink: 0;
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: .4; }
        }

        /* ═══════════ 主内容区 ═══════════ */
        .doc-content {
            flex: 1;
            min-width: 0;
        }

        .breadcrumb {
            font-size: .85rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

        .breadcrumb .sep {
            color: var(--color-border);
        }

        .breadcrumb .current {
            color: var(--color-text);
        }

        /* 分类 Hero */
        .category-hero {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 36px 36px 30px;
            background-image: linear-gradient(120deg, rgba(11, 14, 19, .92) 20%, rgba(11, 14, 19, .72) 60%, rgba(11, 14, 19, .82) 100%), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            border: 1px solid var(--color-border);
            margin-bottom: 32px;
        }

        .category-hero h1 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: -.02em;
            margin-bottom: 12px;
            color: var(--color-text);
        }

        .category-hero h1 .highlight {
            color: var(--color-primary);
        }

        .category-desc {
            color: var(--color-text-muted);
            font-size: .95rem;
            max-width: 640px;
            margin-bottom: 20px;
        }

        .category-stats {
            display: flex;
            gap: 28px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-item strong {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .stat-item span {
            font-size: .78rem;
            color: var(--color-text-muted);
        }

        .hero-badges {
            display: flex;
            gap: 8px;
        }

        /* 徽章 */
        .tag-badge {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 500;
            background: rgba(255, 176, 0, .12);
            color: var(--color-accent);
            border: 1px solid rgba(255, 176, 0, .2);
            white-space: nowrap;
        }

        .tag-badge.tag-hot {
            background: rgba(255, 92, 40, .12);
            color: var(--color-primary);
            border-color: rgba(255, 92, 40, .25);
        }

        .tag-badge.tag-lime {
            background: rgba(200, 240, 74, .1);
            color: var(--color-lime);
            border-color: rgba(200, 240, 74, .2);
        }

        /* 特征卡片 */
        .feature-section {
            margin-bottom: 36px;
        }

        .section-heading {
            margin-bottom: 18px;
        }

        .section-heading h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .section-heading p {
            font-size: .9rem;
            color: var(--color-text-muted);
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 14px;
        }

        .feature-card {
            position: relative;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-top: 2px solid var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 20px 18px 18px;
            transition: all .25s ease;
        }

        .feature-card:hover {
            border-color: var(--color-text-muted);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .feature-card .card-num {
            position: absolute;
            top: 12px;
            right: 14px;
            font-size: .75rem;
            font-weight: 700;
            color: var(--color-border);
            font-variant-numeric: tabular-nums;
        }

        .feature-card .card-icon {
            font-size: 1.3rem;
            margin-bottom: 10px;
            display: block;
        }

        .feature-card h3 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .feature-card p {
            font-size: .84rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* 筛选条 */
        .list-section {
            margin-bottom: 36px;
        }

        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
            margin-bottom: 18px;
            flex-wrap: wrap;
        }

        .filter-group {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .filter-btn {
            padding: 6px 16px;
            border-radius: 999px;
            border: 1px solid var(--color-border);
            font-size: .85rem;
            color: var(--color-text-muted);
            background: transparent;
            transition: all .2s ease;
        }

        .filter-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-text);
        }

        .filter-btn.active {
            background: var(--color-accent);
            border-color: var(--color-accent);
            color: #171717;
            font-weight: 600;
        }

        .result-count {
            font-size: .85rem;
            color: var(--color-text-muted);
        }

        .result-note {
            font-size: .8rem;
            color: var(--color-text-muted);
            border-left: 3px solid var(--color-accent);
            padding-left: 10px;
            margin-bottom: 16px;
        }

        /* 结果列表 */
        .result-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .result-card {
            display: flex;
            gap: 14px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 14px;
            transition: all .25s ease;
            align-items: center;
        }

        .result-card:hover {
            border-color: var(--color-text-muted);
            box-shadow: var(--shadow-card);
            transform: translateX(2px);
        }

        .result-thumb {
            width: 120px;
            height: 90px;
            flex-shrink: 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--color-surface-2);
        }

        .result-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

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

        .result-body {
            flex: 1;
            min-width: 0;
        }

        .result-title {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .result-title a:hover {
            color: var(--color-primary);
        }

        .result-summary {
            font-size: .84rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .result-meta {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .result-meta time {
            font-size: .78rem;
            color: var(--color-text-muted);
            margin-left: auto;
        }

        .result-id {
            font-size: .72rem;
            color: var(--color-border);
            font-variant-numeric: tabular-nums;
            letter-spacing: .04em;
        }

        /* 分页 */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding-top: 24px;
        }

        .page-btn {
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: 8px;
            border: 1px solid var(--color-border);
            font-size: .875rem;
            color: var(--color-text-muted);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: all .2s ease;
        }

        .page-btn:hover {
            border-color: var(--color-accent);
            color: var(--color-text);
        }

        .page-btn.active {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #171717;
            font-weight: 600;
        }

        .page-ellipsis {
            color: var(--color-text-muted);
            padding: 0 4px;
        }

        .page-link {
            display: none;
        }

        /* 工作流程 */
        .workflow-section {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            margin-bottom: 36px;
        }

        .workflow-section > h2 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .workflow-step {
            position: relative;
            padding: 18px;
            background: var(--color-surface-2);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .workflow-step:hover {
            border-color: var(--color-accent);
            box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: var(--color-primary);
            color: #171717;
            font-weight: 700;
            font-size: .85rem;
            margin-bottom: 12px;
            font-variant-numeric: tabular-nums;
        }

        .workflow-step h3 {
            font-size: .98rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .workflow-step p {
            font-size: .84rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-section {
            margin-bottom: 36px;
        }

        .faq-section > h2 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .faq-section details {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: 12px;
            margin-bottom: 8px;
            transition: border-color .2s ease;
            position: relative;
        }

        .faq-section details[open] {
            border-color: var(--color-accent);
            background: var(--color-surface-2);
        }

        .faq-section details[open]::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--color-accent);
            border-radius: 3px 0 0 3px;
        }

        .faq-section summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 18px;
            font-size: .92rem;
            font-weight: 500;
            cursor: pointer;
            list-style: none;
            user-select: none;
        }

        .faq-section summary::-webkit-details-marker {
            display: none;
        }

        .faq-section summary::after {
            content: '›';
            font-size: 1.2rem;
            color: var(--color-text-muted);
            transition: transform .3s ease;
            flex-shrink: 0;
            line-height: 1;
        }

        .faq-section details[open] summary::after {
            transform: rotate(90deg);
            color: var(--color-accent);
        }

        .faq-section details p {
            padding: 0 18px 16px;
            font-size: .86rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* CTA */
        .cta-banner {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 40px 36px;
            text-align: center;
            border: 1px solid var(--color-border);
            background-image: linear-gradient(135deg, rgba(11, 14, 19, .94) 30%, rgba(20, 25, 32, .88) 100%), url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
        }

        .cta-banner h2 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .cta-banner p {
            color: var(--color-text-muted);
            font-size: .9rem;
            margin-bottom: 20px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 10px;
            font-size: .9rem;
            font-weight: 600;
            transition: all .2s ease;
            min-height: 44px;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #171717;
        }

        .btn-primary:hover {
            background: #ff7a4d;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 92, 40, .25);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline {
            border-color: var(--color-border);
            color: var(--color-text-muted);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-text);
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ═══════════ Footer ═══════════ */
        .site-footer {
            background: var(--color-surface);
            border-top: 1px solid var(--color-border);
            padding: 48px 0 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-top h3 {
            font-size: .9rem;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-top ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-top ul a {
            font-size: .88rem;
            color: var(--color-text-muted);
            transition: color .2s ease;
        }

        .footer-top ul a:hover {
            color: var(--color-primary);
        }

        .subscribe-form {
            display: flex;
            gap: 8px;
            margin-top: 8px;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 0;
            height: 42px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background: var(--color-surface-2);
            padding: 0 12px;
            color: var(--color-text);
            font-size: .85rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .subscribe-form input::placeholder {
            color: var(--color-text-muted);
        }

        .subscribe-form input:focus {
            border-color: var(--color-accent);
            box-shadow: 0 0 0 3px rgba(255, 176, 0, .15);
            outline: none;
        }

        .subscribe-form .btn {
            padding: 0 18px;
            height: 42px;
            min-height: 42px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--color-border);
            font-size: .85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .footer-bottom div {
            display: flex;
            gap: 16px;
        }

        .footer-bottom a {
            color: var(--color-text-muted);
            transition: color .2s ease;
        }

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

        /* ═══════════ 响应式 ═══════════ */
        @media (max-width: 1023px) {
            .doc-layout {
                flex-direction: column;
                gap: 24px;
            }

            .doc-sidebar {
                width: 100%;
                position: static;
                max-height: none;
                overflow-x: auto;
                overflow-y: hidden;
                display: flex;
                flex-direction: column;
                gap: 12px;
                padding-bottom: 4px;
            }

            .doc-search {
                margin-bottom: 0;
                flex-shrink: 0;
            }

            .doc-nav {
                flex-direction: row;
                gap: 8px;
                overflow-x: auto;
                padding-bottom: 6px;
                scrollbar-width: thin;
            }

            .doc-nav-group {
                flex-shrink: 0;
            }

            .doc-nav-group h3 {
                padding-left: 4px;
                font-size: .72rem;
            }

            .doc-nav-group a {
                white-space: nowrap;
                border-left: none;
                border-bottom: 2px solid transparent;
                padding: 6px 10px;
            }

            .doc-nav-group a.active {
                border-left: none;
                border-bottom-color: var(--color-primary);
            }

            .doc-nav-group ul {
                flex-direction: row;
                gap: 4px;
            }

            .doc-sidebar-badge {
                flex-shrink: 0;
                margin-top: 0;
            }

            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .workflow-steps {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .site-header {
                height: 64px;
            }

            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(11, 14, 19, .98);
                border-bottom: 1px solid var(--color-border);
                padding: 12px 24px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 16px;
            }

            .nav-toggle {
                display: flex;
            }

            .select-menu.version-menu {
                display: none;
            }

            .search-form {
                display: none;
            }

            .category-hero {
                padding: 24px 18px;
            }

            .category-hero h1 {
                font-size: 1.5rem;
            }

            .category-stats {
                gap: 16px;
            }

            .stat-item strong {
                font-size: 1.3rem;
            }

            .feature-grid {
                grid-template-columns: 1fr;
            }

            .result-card {
                flex-direction: row;
                gap: 10px;
                padding: 10px;
            }

            .result-thumb {
                width: 88px;
                height: 72px;
            }

            .result-title {
                font-size: .9rem;
            }

            .result-summary {
                display: none;
            }

            .result-meta time {
                display: none;
            }

            .page-link {
                display: flex;
            }

            .page-numbers {
                display: none;
            }

            .pagination {
                justify-content: space-between;
            }

            .workflow-section {
                padding: 20px 16px;
            }

            .cta-banner {
                padding: 32px 20px;
            }

            .cta-banner h2 {
                font-size: 1.3rem;
            }

            .cta-actions {
                flex-direction: column;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

            .doc-layout {
                padding-top: 20px;
                padding-bottom: 48px;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }