/* roulang page: index */
:root {
            --bg-deep: #0C0F14;
            --bg-panel: #12161D;
            --bg-elevated: #1A2028;
            --accent: #D8C9A3;
            --accent-hover: #E8DBB8;
            --accent-soft: rgba(216, 201, 163, 0.14);
            --accent-line: rgba(216, 201, 163, 0.4);
            --aux: #7FA8B8;
            --aux-soft: rgba(127, 168, 184, 0.14);
            --text-primary: #F3F1EC;
            --text-secondary: #9BA0A8;
            --text-muted: #6B7080;
            --line: rgba(255, 255, 255, 0.08);
            --line-strong: rgba(255, 255, 255, 0.14);
            --success: #8FBFA0;
            --warning: #D9A05B;
            --danger: #D97A6C;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --space-section: 110px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.4);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;
            --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 14px;
            color: var(--text-primary);
            background: transparent;
            border: none;
            outline: none;
        }

        ::selection {
            background: var(--accent-soft);
            color: var(--text-primary);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: all 0.25s var(--ease);
            cursor: pointer;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--accent);
            color: #1A1510;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }

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

        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-primary .arrow {
            display: inline-block;
            transition: transform 0.3s var(--ease);
        }

        .btn-primary:hover .arrow {
            transform: translateX(4px);
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
        }

        .btn-ghost:hover {
            border-color: var(--accent-line);
            color: var(--accent);
        }

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

        .btn-ghost:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .btn-sm {
            height: 36px;
            padding: 0 16px;
            font-size: 13px;
        }

        .btn-block {
            width: 100%;
        }

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

        .section-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 48px;
        }

        .section-head .section-mark {
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 2px;
            display: inline-block;
            margin-right: 12px;
            flex-shrink: 0;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 600;
            line-height: 1.35;
            letter-spacing: -0.01em;
            display: inline-block;
            vertical-align: middle;
        }

        .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 10px;
            max-width: 420px;
        }

        .link-more {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color 0.25s var(--ease);
            flex-shrink: 0;
            margin-top: 8px;
        }

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

        .link-more span {
            transition: transform 0.3s var(--ease);
            display: inline-block;
        }

        .link-more:hover span {
            transform: translateX(4px);
        }

        .section-mark {
            display: inline-block;
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 2px;
            margin-right: 12px;
            vertical-align: middle;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
            border-bottom: 1px solid transparent;
        }

        .site-header.scrolled {
            background: rgba(12, 15, 20, 0.92);
            backdrop-filter: blur(12px);
            border-bottom-color: var(--line);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 72px;
        }

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

        .logo-icon {
            width: 28px;
            height: 28px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 19px;
            font-weight: 600;
            letter-spacing: 0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 auto;
        }

        .nav-link {
            position: relative;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 400;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: color 0.25s var(--ease);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 1px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s var(--ease);
        }

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

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

        .nav-link.active {
            color: var(--accent);
            font-weight: 500;
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-link:focus-visible {
            outline: 1px solid var(--accent);
            outline-offset: 2px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .search-box {
            position: relative;
            display: flex;
            align-items: center;
            width: 220px;
            height: 38px;
            background: #161B22;
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 0 12px 0 16px;
            transition: border-color 0.3s var(--ease), background 0.3s var(--ease), box-shadow 0.3s var(--ease);
        }

        .search-box:hover,
        .search-box:focus-within {
            border-color: var(--accent-line);
            background: var(--bg-elevated);
            box-shadow: 0 0 0 1px rgba(216, 201, 163, 0.15);
        }

        .search-box .search-icon {
            width: 15px;
            height: 15px;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-right: 8px;
        }

        .search-box input {
            flex: 1;
            font-size: 13px;
            color: var(--text-primary);
            caret-color: var(--accent);
        }

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

        .search-box kbd {
            font-family: var(--font-mono);
            font-size: 11px;
            color: var(--text-muted);
            border: 1px solid var(--line-strong);
            border-radius: 4px;
            padding: 1px 6px;
            background: rgba(255, 255, 255, 0.04);
            flex-shrink: 0;
        }

        .login-link {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s var(--ease);
            padding: 6px 4px;
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            padding: 8px;
            align-items: center;
        }

        .hamburger span {
            display: block;
            width: 20px;
            height: 1.5px;
            background: var(--text-primary);
            transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(6.5px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-6.5px) rotate(-45deg);
        }

        /* ===== Mobile Menu ===== */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            z-index: 999;
            width: min(360px, 100vw);
            background: var(--bg-deep);
            border-left: 1px solid var(--line);
            padding: 96px 32px 40px;
            transform: translateX(100%);
            transition: transform 0.4s var(--ease);
            overflow-y: auto;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu .mobile-search {
            display: block;
            width: 100%;
            margin-bottom: 32px;
        }

        .mobile-menu nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 40px;
        }

        .mobile-menu nav a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 12px 0;
            border-bottom: 1px solid var(--line);
            transition: color 0.25s var(--ease);
        }

        .mobile-menu nav a:hover {
            color: var(--accent);
        }

        .mobile-menu nav a.active {
            color: var(--accent);
        }

        .mobile-menu .mobile-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .body-lock {
            overflow: hidden;
        }

        /* ===== Hero ===== */
        .hero {
            min-height: 92vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            padding: 140px 0 80px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.4;
            z-index: 0;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(12, 15, 20, 0.6) 0%, rgba(12, 15, 20, 0.95) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }

        .hero-line {
            width: 1px;
            height: 48px;
            background: linear-gradient(to bottom, transparent, var(--accent-line));
            margin: 0 auto 24px;
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 650;
            line-height: 1.15;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
        }

        .hero-sub {
            font-size: 18px;
            line-height: 1.6;
            color: var(--text-secondary);
            max-width: 480px;
            margin: 0 auto 40px;
        }

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

        .hero-metrics {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            margin-top: 96px;
            border-top: 1px solid var(--line);
            padding-top: 32px;
        }

        .metric-card {
            text-align: center;
            padding: 16px 24px;
            border-right: 1px solid var(--line);
        }

        .metric-card:last-child {
            border-right: none;
        }

        .metric-num {
            font-size: 48px;
            font-weight: 650;
            color: var(--accent);
            line-height: 1.1;
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        /* ===== Services ===== */
        .services-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 0;
            border-top: 1px solid var(--line);
            border-left: 1px solid var(--line);
        }

        .service-card {
            position: relative;
            background: transparent;
            padding: 32px 28px;
            border-right: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            transition: background 0.3s var(--ease), transform 0.3s var(--ease);
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: var(--accent);
            opacity: 0;
            transition: opacity 0.3s var(--ease);
        }

        .service-card:hover {
            background: rgba(26, 32, 40, 0.5);
            transform: translateY(-2px);
        }

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

        .service-card.lg {
            grid-column: span 6;
        }

        .service-card.sm {
            grid-column: span 3;
        }

        .service-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .service-icon svg {
            width: 24px;
            height: 24px;
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 500;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 320px;
        }

        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.25s var(--ease);
        }

        .service-link span {
            transition: transform 0.3s var(--ease);
            display: inline-block;
        }

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

        .service-card:hover .service-link span {
            transform: translateX(4px);
        }

        /* ===== Compare ===== */
        .compare-wrap {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 64px;
            align-items: center;
        }

        .compare-text h2 {
            font-size: 30px;
            font-weight: 600;
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .compare-text>p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 440px;
        }

        .compare-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .compare-points li {
            position: relative;
            padding-left: 24px;
            font-size: 14px;
            color: var(--text-primary);
            line-height: 1.5;
        }

        .compare-points li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            opacity: 0.7;
        }

        .compare-chart {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .chart-item {
            display: grid;
            grid-template-columns: 96px 1fr 60px;
            align-items: center;
            gap: 16px;
        }

        .chart-label {
            font-size: 13px;
            color: var(--text-secondary);
            text-align: right;
            white-space: nowrap;
        }

        .chart-bar {
            height: 6px;
            border-radius: 3px;
            background: rgba(255, 255, 255, 0.06);
            overflow: hidden;
            position: relative;
        }

        .bar-fill {
            display: block;
            height: 100%;
            border-radius: 3px;
            background: var(--accent);
            transition: width 1.2s var(--ease);
        }

        .bar-fill.alt {
            background: var(--aux);
        }

        .chart-value {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .chart-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 32px;
            text-align: right;
            border-top: 1px solid var(--line);
            padding-top: 16px;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: var(--bg-elevated);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--line);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(216, 201, 163, 0.2);
        }

        .news-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            position: relative;
            background: var(--bg-panel);
        }

        .news-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s var(--ease);
        }

        .news-card:hover .news-cover img {
            transform: scale(1.03);
        }

        .news-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent);
            border: 1px solid var(--accent-line);
            border-radius: 999px;
            padding: 3px 12px;
            margin-bottom: 14px;
            align-self: flex-start;
            background: rgba(216, 201, 163, 0.06);
        }

        .news-body h3 {
            font-size: 18px;
            font-weight: 500;
            line-height: 1.4;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.25s var(--ease);
        }

        .news-card:hover .news-body h3 {
            color: var(--accent);
        }

        .news-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }

        .news-meta a {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            color: var(--text-secondary);
            transition: color 0.25s var(--ease);
            font-size: 13px;
        }

        .news-meta a span {
            transition: transform 0.3s var(--ease);
            display: inline-block;
        }

        .news-card:hover .news-meta a {
            color: var(--accent);
        }

        .news-card:hover .news-meta a span {
            transform: translateX(4px);
        }

        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-panel);
            border-radius: var(--radius-md);
            border: 1px solid var(--line);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        .empty-state .empty-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            border: 1px solid var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            opacity: 0.5;
        }

        .empty-state p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            display: grid;
            grid-template-columns: 5fr 7fr;
            gap: 64px;
            align-items: start;
        }

        .faq-left h2 {
            font-size: 30px;
            font-weight: 600;
            line-height: 1.35;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }

        .faq-left p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }

        .faq-right {
            display: flex;
            flex-direction: column;
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--line);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            padding: 22px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color 0.25s var(--ease), background 0.25s var(--ease);
            cursor: pointer;
            border-radius: var(--radius-sm);
        }

        .faq-question:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-question .faq-icon {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            border: 1px solid var(--line-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), color 0.3s var(--ease);
            flex-shrink: 0;
        }

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

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent-line);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s var(--ease), padding 0.35s var(--ease), opacity 0.3s var(--ease);
            padding: 0 24px;
            opacity: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 24px;
            opacity: 1;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 520px;
        }

        /* ===== CTA Form ===== */
        .cta-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-wrap {
            position: relative;
            z-index: 1;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-wrap h2 {
            font-size: 32px;
            font-weight: 600;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .cta-wrap>p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 44px;
        }

        .cta-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0 32px;
            text-align: left;
        }

        .form-group {
            position: relative;
            margin-bottom: 32px;
            display: flex;
            flex-direction: column;
        }

        .form-group label {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            letter-spacing: 0.02em;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            border-bottom: 1px solid var(--line-strong);
            padding: 10px 2px;
            font-size: 15px;
            color: var(--text-primary);
            transition: border-color 0.3s var(--ease);
            border-radius: 0;
            background: transparent;
            appearance: none;
            -webkit-appearance: none;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            border-bottom-color: var(--accent);
        }

        .form-group input::placeholder,
        .form-group textarea::placeholder {
            color: var(--text-muted);
            font-size: 14px;
        }

        .form-group select {
            cursor: pointer;
        }

        .form-group select option {
            background: var(--bg-panel);
            color: var(--text-primary);
        }

        .form-group.full {
            grid-column: 1 / -1;
        }

        .form-group textarea {
            min-height: 80px;
            resize: vertical;
        }

        .submit-row {
            grid-column: 1 / -1;
            display: flex;
            justify-content: center;
            margin-top: 8px;
        }

        .form-success {
            display: none;
            text-align: center;
            padding: 24px;
            background: var(--accent-soft);
            border-radius: var(--radius-md);
            margin-top: 24px;
            border: 1px solid var(--accent-line);
        }

        .form-success .success-icon {
            color: var(--success);
            font-size: 36px;
            margin-bottom: 8px;
        }

        .form-success p {
            color: var(--text-primary);
            font-size: 15px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            padding-top: 72px;
            border-top: 1px solid var(--line);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            padding-bottom: 56px;
        }

        .footer-brand .logo {
            margin-bottom: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 20px;
            opacity: 0.7;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s var(--ease);
        }

        .footer-col ul a:hover {
            color: var(--accent);
        }

        .footer-contact {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 2;
        }

        .footer-contact strong {
            color: var(--text-primary);
            font-weight: 500;
        }

        .footer-bottom {
            border-top: 1px solid var(--line);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

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

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

        .copyright a:hover {
            color: var(--accent);
        }

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

        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.25s var(--ease);
        }

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

        /* ===== Reveal Animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1280px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (max-width: 1024px) {
            :root {
                --space-section: 88px;
            }

            .header-inner {
                gap: 16px;
            }

            .main-nav {
                display: none;
            }

            .search-box {
                width: 180px;
            }

            .hamburger {
                display: flex;
            }

            .hero h1 {
                font-size: 44px;
            }

            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 0;
            }

            .metric-card:nth-child(2) {
                border-right: none;
            }

            .metric-card:nth-child(n+3) {
                border-top: 1px solid var(--line);
            }

            .services-grid {
                grid-template-columns: repeat(6, 1fr);
            }

            .service-card.lg {
                grid-column: span 6;
            }

            .service-card.sm {
                grid-column: span 3;
            }

            .compare-wrap {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .compare-chart {
                max-width: 640px;
            }

            .faq-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 72px;
            }

            .container {
                padding: 0 20px;
            }

            .header-inner {
                height: 64px;
            }

            .logo-text {
                font-size: 17px;
            }

            .header-actions {
                gap: 8px;
            }

            .header-actions .search-box {
                display: none;
            }

            .header-actions .login-link {
                display: none;
            }

            .hero {
                min-height: auto;
                padding: 120px 0 60px;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-cta {
                flex-direction: column;
                align-items: center;
            }

            .hero-cta .btn {
                width: 100%;
                max-width: 360px;
            }

            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 64px;
                padding-top: 24px;
            }

            .metric-num {
                font-size: 36px;
            }

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

            .section-head {
                flex-direction: column;
                gap: 16px;
                margin-bottom: 32px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .link-more {
                margin-top: 0;
            }

            .cta-form {
                grid-template-columns: 1fr;
            }

            .form-group.full {
                grid-column: auto;
            }

            .submit-row {
                grid-column: auto;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .hero h1 {
                font-size: 30px;
            }

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

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
            }

            .metric-card {
                padding: 12px 8px;
            }

            .metric-num {
                font-size: 30px;
            }

            .metric-label {
                font-size: 12px;
            }

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

            .service-card.lg,
            .service-card.sm {
                grid-column: span 1;
            }

            .compare-wrap {
                gap: 40px;
            }

            .chart-item {
                grid-template-columns: 72px 1fr 48px;
                gap: 10px;
            }

            .chart-label {
                font-size: 12px;
            }

            .chart-value {
                font-size: 13px;
            }

            .news-body {
                padding: 18px;
            }

            .cta-wrap h2 {
                font-size: 24px;
            }

            .faq-question {
                padding: 18px 16px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 16px;
            }

            .faq-item.open .faq-answer {
                padding: 0 16px 18px;
            }

            .mobile-menu {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
    --bg-deep: #0C0F14;
    --bg-panel: #12161D;
    --bg-elev: #1A2028;
    --accent: #D8C9A3;
    --accent-hover: #E8DBB8;
    --accent-soft: rgba(216, 201, 163, 0.12);
    --secondary: #7FA8B8;
    --text-primary: #F3F1EC;
    --text-secondary: #9BA0A8;
    --text-muted: #6B7080;
    --line: rgba(255, 255, 255, 0.08);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --space-section: 96px;
    --container: 1200px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", "Roboto Mono", Consolas, monospace;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background: var(--bg-deep);
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 1px solid var(--accent);
    outline-offset: 2px;
}
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.container-narrow { width: 100%; max-width: 760px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background 0.3s cubic-bezier(0.2, 0.6, 0.2, 1), border-color 0.3s;
    border-bottom: 1px solid transparent;
}
.site-header.scrolled {
    background: rgba(12, 15, 20, 0.92);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom-color: var(--line);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 26px; height: 26px; color: var(--accent); }
.logo-text { font-size: 19px; font-weight: 600; color: var(--text-primary); letter-spacing: -0.01em; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 28px; margin: 0 auto; }
.nav-link {
    position: relative;
    padding: 8px 2px;
    font-size: 15px;
    font-weight: 400;
    color: var(--text-secondary);
    transition: color 0.25s;
    white-space: nowrap;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.25s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--text-primary); }
.nav-link.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #161B22;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 8px 14px;
    width: 200px;
    transition: border-color 0.25s, background 0.25s, box-shadow 0.25s;
}
.search-box:hover, .search-box:focus-within {
    border-color: var(--accent);
    background: var(--bg-elev);
    box-shadow: 0 0 0 1px rgba(216, 201, 163, 0.15);
}
.search-icon { width: 14px; height: 14px; color: var(--text-muted); flex-shrink: 0; }
.search-text { font-size: 13px; color: var(--text-muted); flex: 1; white-space: nowrap; }
.key-hint {
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--text-muted);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 1px 5px;
    line-height: 1.4;
    flex-shrink: 0;
}
.header-link { font-size: 14px; color: var(--text-secondary); transition: color 0.25s; white-space: nowrap; }
.header-link:hover { color: var(--accent); }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 44px;
    padding: 0 24px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
    transition: background 0.25s, color 0.25s, border-color 0.25s, transform 0.15s, box-shadow 0.25s;
}
.btn-primary { background: var(--accent); color: #1A1A14; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 6px 24px rgba(216, 201, 163, 0.18); }
.btn-primary:active { transform: scale(0.98); }
.btn-ghost { background: transparent; color: var(--text-primary); border: 1px solid rgba(255, 255, 255, 0.2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost:active { transform: scale(0.98); }
.btn-arrow { transition: transform 0.25s; }
.btn:hover .btn-arrow { transform: translateX(4px); }
.menu-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; flex-direction: column; gap: 5px; }
.menu-toggle span { display: block; width: 20px; height: 1.5px; background: var(--text-primary); transition: transform 0.3s, opacity 0.3s; }
.mobile-menu {
    display: none;
    position: fixed;
    inset: 72px 0 0;
    z-index: 999;
    background: rgba(12, 15, 20, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    padding: 32px 24px 48px;
    flex-direction: column;
    gap: 8px;
    border-top: 1px solid var(--line);
}
.mobile-menu.open { display: flex; }
.mobile-menu a { display: flex; align-items: center; height: 48px; font-size: 18px; color: var(--text-primary); border-bottom: 1px solid var(--line); }
.mobile-menu .btn { margin-top: 24px; width: 100%; }

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: 180px 0 72px;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
}
.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(12, 15, 20, 0.74) 0%, rgba(12, 15, 20, 0.86) 60%, var(--bg-deep) 100%);
}
.article-hero .container { position: relative; z-index: 1; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--text-muted); margin-bottom: 28px; }
.breadcrumb a { color: var(--text-muted); transition: color 0.25s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--text-muted); opacity: 0.5; }
.breadcrumb-current { color: var(--text-secondary); max-width: 360px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.article-title {
    font-size: 44px;
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    max-width: 860px;
    margin-bottom: 24px;
}
.article-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 12px 20px; font-size: 13px; color: var(--text-muted); }
.meta-item { display: flex; align-items: center; gap: 6px; }
.meta-item .tag-badge { margin-left: 0; }
.meta-divider { width: 1px; height: 14px; background: rgba(255, 255, 255, 0.1); }

/* ===== Tag Badge ===== */
.tag-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 12px;
    font-size: 12px;
    font-weight: 400;
    color: var(--accent);
    border: 1px solid rgba(216, 201, 163, 0.4);
    border-radius: 999px;
    background: transparent;
    white-space: nowrap;
}

/* ===== Article Body ===== */
.article-body-wrap { padding: 64px 0 24px; }
.article-content { font-size: 16px; line-height: 1.85; color: var(--text-secondary); }
.article-content p { margin-bottom: 24px; }
.article-content h2 { font-size: 28px; font-weight: 600; color: var(--text-primary); line-height: 1.35; margin: 48px 0 20px; letter-spacing: -0.01em; }
.article-content h3 { font-size: 22px; font-weight: 600; color: var(--text-primary); line-height: 1.4; margin: 36px 0 16px; position: relative; padding-left: 44px; }
.article-content h3::before {
    content: attr(data-index);
    position: absolute;
    left: 0;
    top: 2px;
    font-size: 14px;
    font-family: var(--font-mono);
    color: var(--accent);
    font-weight: 400;
}
.article-content ul, .article-content ol { margin: 0 0 24px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote { border-left: 2px solid var(--accent); background: var(--bg-elev); padding: 20px 24px; margin: 0 0 24px; font-size: 15px; font-style: italic; color: var(--text-secondary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.article-content blockquote p { margin-bottom: 0; }
.article-content img { border-radius: var(--radius-md); margin: 32px 0 12px; width: auto; max-width: 100%; }
.article-content figure { margin: 32px 0; }
.article-content figcaption { font-size: 12px; color: var(--text-muted); text-align: center; margin-top: 8px; }
.article-content a { color: var(--text-primary); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 4px; transition: text-decoration-color 0.25s; }
.article-content a:hover { text-decoration-color: var(--accent-hover); }
.article-content code { font-family: var(--font-mono); font-size: 14px; background: var(--bg-elev); padding: 2px 6px; border-radius: 4px; color: var(--accent); }
.article-content pre { background: var(--bg-elev); border: 1px solid var(--line); border-radius: var(--radius-md); padding: 20px; overflow-x: auto; margin-bottom: 24px; }
.article-content pre code { background: none; padding: 0; color: var(--text-primary); }
.article-content table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.article-content th, .article-content td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; }
.article-content th { background: var(--bg-panel); color: var(--text-primary); font-weight: 500; }

/* ===== Back Link ===== */
.article-back { padding: 32px 0 64px; text-align: center; }
.back-link { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-secondary); transition: color 0.25s; }
.back-link span { transition: transform 0.25s; }
.back-link:hover { color: var(--accent); }
.back-link:hover span { transform: translateX(-4px); }

/* ===== Related Posts ===== */
.related-posts { padding: 80px 0 96px; border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; }
.section-title { font-size: 30px; font-weight: 600; color: var(--text-primary); letter-spacing: -0.01em; line-height: 1.3; }
.section-title-line { width: 4px; height: 24px; background: var(--accent); border-radius: 2px; display: inline-block; margin-right: 12px; vertical-align: -2px; }
.section-link { font-size: 14px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; transition: color 0.25s; }
.section-link:hover { color: var(--accent); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
    background: var(--bg-panel);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    border: 1px solid transparent;
    transition: transform 0.25s cubic-bezier(0.2, 0.6, 0.2, 1), background 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.related-card:hover {
    transform: translateY(-3px);
    background: #171C24;
    border-color: rgba(216, 201, 163, 0.15);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}
.card-cover { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 16 / 9; background: var(--bg-elev); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s cubic-bezier(0.2, 0.6, 0.2, 1); }
.related-card:hover .card-cover img { transform: scale(1.03); }
.card-body { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card-title { font-size: 18px; font-weight: 500; color: var(--text-primary); line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color 0.25s; }
.related-card:hover .card-title { color: var(--accent); }
.card-summary { font-size: 14px; color: var(--text-secondary); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-footer { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-muted); margin-top: auto; }
.card-link { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; color: var(--text-secondary); transition: color 0.25s; }
.card-link span { transition: transform 0.25s; }
.card-link:hover { color: var(--accent); }
.card-link:hover span { transform: translateX(3px); }

/* ===== CTA ===== */
.article-cta { background: var(--bg-panel); padding: 80px 0; border-top: 1px solid var(--line); }
.cta-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.cta-title { font-size: 30px; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; letter-spacing: -0.01em; }
.cta-desc { font-size: 15px; color: var(--text-secondary); margin-bottom: 32px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== NotFound ===== */
.not-found {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 16px;
    padding: 120px 24px 80px;
}
.not-found h1 { font-size: 32px; font-weight: 600; color: var(--text-primary); }
.not-found p { font-size: 15px; color: var(--text-secondary); }
.not-found .btn { margin-top: 12px; }

/* ===== Footer ===== */
.site-footer { background: #0A0D11; border-top: 1px solid var(--line); padding: 72px 0 32px; }
.footer-main { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid var(--line); }
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: 14px; font-weight: 500; color: var(--text-primary); margin-bottom: 20px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-col ul a { font-size: 14px; color: var(--text-secondary); transition: color 0.25s; }
.footer-col ul a:hover { color: var(--accent); }
.footer-contact { display: flex; flex-direction: column; gap: 10px; font-size: 14px; color: var(--text-secondary); }
.footer-contact strong { color: var(--text-primary); font-weight: 500; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 24px; flex-wrap: wrap; }
.copyright { font-size: 13px; color: var(--text-muted); }
.copyright a { color: var(--text-muted); transition: color 0.25s; }
.copyright a:hover { color: var(--accent); }
.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 13px; color: var(--text-muted); transition: color 0.25s; }
.footer-links a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .main-nav { gap: 20px; }
    .search-box { width: 170px; }
    .footer-main { grid-template-columns: 1fr 1fr; gap: 40px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .header-inner { height: 64px; }
    .main-nav { display: none; }
    .search-box { display: none; }
    .header-link { display: none; }
    .menu-toggle { display: flex; }
    .mobile-menu { inset-top: 64px; }
    .article-hero { padding: 140px 0 48px; }
    .article-title { font-size: 32px; }
    .related-grid { grid-template-columns: 1fr; }
    .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
    .article-cta { padding: 64px 0; }
    .cta-actions { flex-direction: column; }
    .cta-actions .btn { width: 100%; }
    .footer-main { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    :root { --space-section: 64px; }
    .container, .container-narrow { padding-left: 16px; padding-right: 16px; }
    .article-title { font-size: 26px; }
    .article-meta { gap: 8px 12px; font-size: 12px; }
    .tag-badge { font-size: 11px; padding: 2px 10px; }
    .section-title { font-size: 24px; }
    .article-content h2 { font-size: 22px; }
    .article-content h3 { font-size: 18px; padding-left: 36px; }
    .related-card { padding: 16px; }
    .card-title { font-size: 16px; }
}

/* roulang page: category1 */
:root {
            --bg-deep: #0C0F14;
            --bg-panel: #12161D;
            --bg-raised: #1A2028;
            --accent: #D8C9A3;
            --accent-bright: #E8DBB8;
            --accent-soft: rgba(216, 201, 163, 0.12);
            --cyan: #7FA8B8;
            --text-primary: #F3F1EC;
            --text-secondary: #9BA0A8;
            --text-muted: #6B7080;
            --line: rgba(255, 255, 255, 0.08);
            --line-strong: rgba(255, 255, 255, 0.14);
            --success: #8FBFA0;
            --warning: #D9A05B;
            --error: #D97A6C;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.4);
            --transition: 200ms cubic-bezier(0.2, 0.6, 0.2, 1);
            --space-section: 96px;
            --container: 1200px;
            --header-h: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            display: block;
            border: none;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 15px;
            color: var(--text-primary);
            background: transparent;
            border: none;
            outline: none;
            width: 100%;
        }

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

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

        .section-head {
            margin-bottom: 48px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 550;
            letter-spacing: -0.01em;
            line-height: 1.25;
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .section-head h2::before {
            content: "";
            width: 4px;
            height: 28px;
            background: var(--accent);
            border-radius: 2px;
            flex-shrink: 0;
        }

        .section-head p {
            margin-top: 8px;
            color: var(--text-secondary);
            font-size: 16px;
            max-width: 520px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--bg-deep);
        }

        .btn-primary:hover {
            background: var(--accent-bright);
            transform: translateY(-1px);
        }

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

        .btn-primary .arrow {
            transition: transform var(--transition);
        }

        .btn-primary:hover .arrow {
            transform: translateX(4px);
        }

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
        }

        .btn-ghost:hover {
            border-color: rgba(216, 201, 163, 0.8);
            color: var(--accent);
        }

        .btn-ghost .arrow {
            transition: transform var(--transition);
        }

        .btn-ghost:hover .arrow {
            transform: translateX(4px);
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: var(--header-h);
            background: rgba(12, 15, 20, 0.6);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(12, 15, 20, 0.92);
            box-shadow: inset 0 -1px 0 var(--line);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-h);
            gap: 32px;
        }

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

        .logo-icon {
            width: 26px;
            height: 26px;
            color: var(--accent);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 600;
            letter-spacing: -0.01em;
            color: var(--text-primary);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0 auto;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 400;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition);
        }

        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 1px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

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

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

        .nav-link.active {
            color: var(--accent);
            font-weight: 500;
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-shrink: 0;
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 36px;
            padding: 0 12px;
            background: #161B22;
            border: 1px solid transparent;
            border-radius: 999px;
            width: 200px;
            transition: border-color var(--transition), background var(--transition);
        }

        .nav-search:hover,
        .nav-search:focus-within {
            border-color: rgba(216, 201, 163, 0.6);
            background: #1A2028;
        }

        .nav-search .search-icon {
            width: 14px;
            height: 14px;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .nav-search input {
            font-size: 13px;
            height: 100%;
            color: var(--text-primary);
            background: transparent;
            border: none;
            outline: none;
            flex: 1;
        }

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

        .search-kbd {
            font-family: Consolas, "JetBrains Mono", monospace;
            font-size: 11px;
            color: var(--text-muted);
            border: 1px solid var(--line-strong);
            border-radius: 4px;
            padding: 1px 5px;
            background: rgba(255, 255, 255, 0.03);
            line-height: 1.4;
            flex-shrink: 0;
        }

        .header-login {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 4px;
            transition: color var(--transition);
        }

        .header-login:hover {
            color: var(--accent);
        }

        .header-btn {
            height: 38px;
            padding: 0 20px;
            font-size: 13px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .nav-toggle:hover {
            background: var(--accent-soft);
        }

        .nav-toggle span {
            width: 18px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .nav-toggle.is-active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.is-active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.is-active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-deep);
            padding: 40px 24px;
            z-index: 99;
            flex-direction: column;
            gap: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all 300ms cubic-bezier(0.2, 0.6, 0.2, 1);
        }

        .mobile-menu.is-open {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mobile-menu a.mobile-link {
            font-size: 20px;
            font-weight: 500;
            padding: 16px 0;
            border-bottom: 1px solid var(--line);
            color: var(--text-secondary);
        }

        .mobile-menu a.mobile-link.active {
            color: var(--accent);
        }

        .mobile-menu .mobile-actions {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .mobile-menu .btn {
            width: 100%;
        }

        /* Category Hero */
        .category-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            padding: calc(var(--header-h) + 40px) 0 56px;
            background:
                linear-gradient(180deg, rgba(12, 15, 20, 0.55) 0%, rgba(12, 15, 20, 0.82) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--line);
        }

        .category-hero::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(127, 168, 184, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 64px;
            align-items: center;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--accent);
            letter-spacing: 0.04em;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .hero-eyebrow::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--accent);
            opacity: 0.6;
        }

        .hero-copy h1 {
            font-size: 48px;
            font-weight: 600;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
        }

        .hero-copy .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 520px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .hero-meta {
            display: flex;
            gap: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--line);
        }

        .hero-meta-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .hero-meta-item .label {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        .hero-meta-item .value {
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual .browser-frame {
            background: var(--bg-panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .browser-bar {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 14px;
            border-bottom: 1px solid var(--line);
        }

        .browser-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.16);
        }

        .browser-dot:nth-child(1) {
            background: var(--error);
        }

        .browser-dot:nth-child(2) {
            background: var(--warning);
        }

        .browser-dot:nth-child(3) {
            background: var(--success);
        }

        .browser-url {
            flex: 1;
            margin-left: 10px;
            height: 24px;
            background: var(--bg-deep);
            border-radius: 6px;
            padding: 0 12px;
            font-size: 11px;
            color: var(--text-muted);
            line-height: 24px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            aspect-ratio: 16 / 10;
            object-fit: cover;
        }

        /* Feature Cards */
        .features {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .feature-card {
            background: var(--bg-panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: transform var(--transition), border-color var(--transition), background var(--transition);
        }

        .feature-card:hover {
            transform: translateY(-2px);
            border-color: rgba(216, 201, 163, 0.3);
            background: var(--bg-raised);
        }

        .feature-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
        }

        .feature-icon svg {
            width: 22px;
            height: 22px;
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 500;
            margin-bottom: 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Split Layout */
        .split-section {
            padding: var(--space-section) 0;
            background: var(--bg-panel);
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
        }

        .split-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 56px;
            align-items: start;
        }

        .main-col h2,
        .sidebar h3 {
            font-size: 26px;
            font-weight: 550;
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }

        .main-col .col-desc {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 32px;
        }

        .scene-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .scene-card {
            background: var(--bg-panel);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }

        .scene-card:hover {
            background: var(--bg-raised);
            border-color: rgba(216, 201, 163, 0.35);
            transform: translateY(-2px);
        }

        .scene-card .scene-icon {
            font-size: 13px;
            font-weight: 500;
            color: var(--cyan);
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }

        .scene-card h3 {
            font-size: 18px;
            font-weight: 500;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .scene-card .scene-link {
            font-size: 13px;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 8px;
            transition: gap var(--transition);
        }

        .scene-card .scene-link .arrow {
            transition: transform var(--transition);
        }

        .scene-card .scene-link:hover .arrow {
            transform: translateX(4px);
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
            position: sticky;
            top: calc(var(--header-h) + 40px);
        }

        .sidebar-widget {
            background: var(--bg-deep);
            border: 1px solid var(--line);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .sidebar-widget h4 {
            font-size: 15px;
            font-weight: 550;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--line);
        }

        .hot-list {
            list-style: none;
        }

        .hot-list li {
            display: flex;
            gap: 14px;
            align-items: baseline;
            padding: 12px 0;
            border-bottom: 1px solid var(--line);
            transition: padding-left var(--transition);
        }

        .hot-list li:last-child {
            border-bottom: none;
        }

        .hot-list li:hover {
            padding-left: 4px;
        }

        .hot-num {
            font-family: Consolas, "JetBrains Mono", monospace;
            font-size: 12px;
            color: var(--accent);
            opacity: 0.8;
            flex-shrink: 0;
            font-weight: 500;
        }

        .hot-list a {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
            transition: color var(--transition);
        }

        .hot-list a:hover {
            color: var(--accent);
        }

        .side-nav {
            list-style: none;
        }

        .side-nav li {
            margin-bottom: 4px;
        }

        .side-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
        }

        .side-nav a:hover {
            background: var(--accent-soft);
            color: var(--text-primary);
        }

        .side-nav a.active {
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 500;
        }

        .side-nav a.active::before {
            content: "";
            width: 3px;
            height: 14px;
            background: var(--accent);
            border-radius: 2px;
        }

        /* Process */
        .process {
            padding: var(--space-section) 0;
            position: relative;
            background:
                linear-gradient(180deg, rgba(12, 15, 20, 0.9), rgba(12, 15, 20, 0.96)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-top: 48px;
            counter-reset: step;
        }

        .process-step {
            position: relative;
            padding-top: 48px;
            counter-increment: step;
        }

        .process-step::before {
            content: "0" counter(step);
            position: absolute;
            top: 0;
            left: 0;
            font-family: Consolas, "JetBrains Mono", monospace;
            font-size: 40px;
            font-weight: 600;
            color: transparent;
            -webkit-text-stroke: 1px var(--accent);
            opacity: 0.5;
            line-height: 1;
        }

        .process-step::after {
            content: "";
            position: absolute;
            top: 14px;
            left: 0;
            width: 100%;
            height: 1px;
            background: var(--line);
        }

        .process-step:last-child::after {
            display: none;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 500;
            margin-bottom: 10px;
            margin-top: 16px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq {
            padding: var(--space-section) 0;
            background: var(--bg-deep);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 0.8fr 1.2fr;
            gap: 64px;
            align-items: start;
        }

        .faq-left .section-head {
            margin-bottom: 24px;
        }

        .faq-left p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .faq-list {
            border-top: 1px solid var(--line);
        }

        .faq-item {
            border-bottom: 1px solid var(--line);
            background: transparent;
            transition: background var(--transition);
        }

        .faq-item.open {
            background: rgba(255, 255, 255, 0.02);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 500;
            text-align: left;
            color: var(--text-primary);
            transition: color var(--transition);
        }

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

        .faq-item.open .faq-q {
            color: var(--accent);
        }

        .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            border: 1px solid var(--line-strong);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition), border-color var(--transition);
            color: var(--text-muted);
            font-size: 12px;
            line-height: 1;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            border-color: var(--accent);
            color: var(--accent);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms cubic-bezier(0.2, 0.6, 0.2, 1);
        }

        .faq-a-inner {
            padding: 0 0 20px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 640px;
        }

        /* CTA Form */
        .cta {
            padding: var(--space-section) 0;
            background: var(--bg-panel);
            border-top: 1px solid var(--line);
            position: relative;
            overflow: hidden;
        }

        .cta::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -120px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(216, 201, 163, 0.06), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 550;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-inner .cta-desc {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: 40px;
        }

        .contact-form {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px 24px;
            text-align: left;
        }

        .form-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-field.full {
            grid-column: 1 / -1;
        }

        .form-field label {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        .form-field input,
        .form-field select,
        .form-field textarea {
            height: 44px;
            padding: 0 2px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 0;
            transition: border-color var(--transition);
        }

        .form-field textarea {
            height: 88px;
            padding: 8px 2px;
            resize: vertical;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .form-field input:focus,
        .form-field select:focus,
        .form-field textarea:focus {
            border-color: var(--accent);
        }

        .form-field select {
            appearance: none;
            background: transparent;
            cursor: pointer;
            color: var(--text-secondary);
        }

        .form-field select option {
            background: var(--bg-panel);
            color: var(--text-primary);
        }

        .form-submit {
            grid-column: 1 / -1;
            display: flex;
            justify-content: center;
            margin-top: 12px;
        }

        .form-success {
            display: none;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 16px;
            border: 1px solid rgba(143, 191, 160, 0.4);
            border-radius: var(--radius-md);
            color: var(--success);
            font-size: 15px;
            margin-top: 16px;
            background: rgba(143, 191, 160, 0.06);
        }

        .form-success.show {
            display: flex;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            padding: 64px 0 0;
            border-top: 1px solid var(--line);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 550;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer-col ul {
            list-style: none;
        }

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

        .footer-col a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-contact {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-contact strong {
            font-weight: 500;
            color: var(--text-primary);
        }

        .footer-bottom {
            border-top: 1px solid var(--line);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

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

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

        .copyright a:hover {
            color: var(--accent);
        }

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

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

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

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --space-section: 72px;
            }

            .header-inner {
                gap: 16px;
            }

            .main-nav {
                gap: 16px;
            }

            .nav-search {
                width: 140px;
            }

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

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-visual {
                max-width: 560px;
            }

            .split-layout {
                grid-template-columns: 1fr;
            }

            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .faq-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav,
            .nav-search,
            .header-login,
            .header-btn {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .mobile-menu {
                display: flex;
            }

            .category-hero {
                min-height: 380px;
                padding: calc(var(--header-h) + 24px) 0 40px;
            }

            .hero-copy h1 {
                font-size: 36px;
            }

            .hero-meta {
                flex-direction: column;
                gap: 12px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 24px;
            }

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

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

            .contact-form {
                grid-template-columns: 1fr;
            }

            .form-submit {
                grid-column: 1;
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 32px 24px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 480px) {
            :root {
                --space-section: 64px;
            }

            .container {
                padding: 0 16px;
            }

            .hero-copy h1 {
                font-size: 30px;
            }

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

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

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

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

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

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

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(16px);
            transition: opacity 600ms cubic-bezier(0.2, 0.6, 0.2, 1), transform 600ms cubic-bezier(0.2, 0.6, 0.2, 1);
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        :focus-visible {
            outline: 1px solid var(--accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

/* roulang page: category2 */
:root {
            --bg-deep: #0C0F14;
            --bg-panel: #12161D;
            --bg-panel-light: #1A2028;
            --accent: #D8C9A3;
            --accent-soft: rgba(216, 201, 163, 0.12);
            --accent-hover: #E8DBB8;
            --secondary: #7FA8B8;
            --text-primary: #F3F1EC;
            --text-secondary: #9BA0A8;
            --text-muted: #6B7080;
            --success: #8FBFA0;
            --success-soft: rgba(143, 191, 160, 0.12);
            --line: rgba(255, 255, 255, 0.08);
            --line-soft: rgba(255, 255, 255, 0.06);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.35);
            --space-section: 96px;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --mono: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
            --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input,
        select,
        textarea {
            font-family: var(--font-family);
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .container-wide {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(12, 15, 20, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
        }

        .site-header.scrolled {
            background: rgba(12, 15, 20, 0.96);
            box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 600;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 26px;
            height: 26px;
            color: var(--accent);
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 600;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav .nav-link {
            font-size: 14px;
            font-weight: 400;
            color: var(--text-secondary);
            padding: 8px 0;
            position: relative;
            letter-spacing: 0.02em;
            transition: color 0.25s var(--ease);
        }

        .main-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width 0.3s var(--ease);
        }

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

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

        .main-nav .nav-link.active {
            color: var(--accent);
        }

        .main-nav .nav-link.active::after {
            width: 100%;
        }

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

        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #161B22;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 8px 14px;
            width: 220px;
            color: var(--text-muted);
            font-size: 13px;
            transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
            cursor: text;
        }

        .command-search:hover,
        .command-search:focus-within {
            border-color: rgba(216, 201, 163, 0.6);
            background: #1A2028;
        }

        .command-search .search-icon {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            color: var(--text-muted);
        }

        .command-search .search-placeholder {
            flex: 1;
            color: var(--text-muted);
            font-size: 13px;
            white-space: nowrap;
        }

        .command-search .kbd-hint {
            font-family: var(--mono);
            font-size: 11px;
            color: var(--text-muted);
            border: 1px solid var(--line);
            border-radius: 4px;
            padding: 1px 6px;
            background: rgba(255, 255, 255, 0.04);
        }

        .header-link {
            font-size: 14px;
            color: var(--text-secondary);
            padding: 8px 4px;
            transition: color 0.25s var(--ease);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            padding: 0 24px;
            height: 44px;
            line-height: 1;
            transition: all 0.25s var(--ease);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #14181F;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }

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

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
        }

        .btn-ghost:hover {
            border-color: rgba(216, 201, 163, 0.8);
            color: var(--accent);
        }

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

        .btn-light {
            background: var(--text-primary);
            color: #14181F;
        }

        .btn-light:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            color: #14181F;
        }

        .btn-arrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-arrow .arrow-icon {
            transition: transform 0.25s var(--ease);
        }

        .btn-arrow:hover .arrow-icon {
            transform: translateX(4px);
        }

        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--text-primary);
            transition: background 0.25s var(--ease);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        .menu-toggle svg {
            width: 22px;
            height: 22px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-deep);
            padding: 24px;
            z-index: 99;
            flex-direction: column;
            gap: 8px;
            border-top: 1px solid var(--line);
            overflow-y: auto;
        }

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

        .mobile-menu .nav-link {
            font-size: 16px;
            padding: 16px 8px;
            border-bottom: 1px solid var(--line-soft);
            color: var(--text-secondary);
        }

        .mobile-menu .nav-link.active {
            color: var(--accent);
        }

        .mobile-menu .btn {
            margin-top: 16px;
            justify-content: center;
        }

        /* ======= Hero Section ======= */
        .page-hero {
            position: relative;
            padding: 80px 0 64px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-bottom: 1px solid var(--line-soft);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(12, 15, 20, 0.94) 30%, rgba(12, 15, 20, 0.75) 70%, rgba(12, 15, 20, 0.55) 100%);
        }

        .page-hero::after {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 320px;
            background: radial-gradient(ellipse at center, rgba(216, 201, 163, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .page-hero-inner {
            max-width: 720px;
        }

        .page-hero .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            letter-spacing: 0.06em;
            color: var(--accent);
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .page-hero .hero-eyebrow::before {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--accent);
        }

        .page-hero h1 {
            font-size: 44px;
            line-height: 1.22;
            font-weight: 600;
            letter-spacing: -0.015em;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .page-hero .hero-desc {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 620px;
        }

        .page-hero .hero-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }

        .page-hero .hero-meta .divider {
            width: 1px;
            height: 12px;
            background: var(--line);
        }

        .page-hero .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ======= Section common ======= */
        .section {
            padding: var(--space-section) 0;
        }

        .section-deep {
            background: var(--bg-deep);
        }

        .section-panel {
            background: var(--bg-panel);
        }

        .section-sm {
            padding: 64px 0;
        }

        .section-head {
            margin-bottom: 48px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
        }

        .section-title-block {
            max-width: 560px;
        }

        .section-title {
            font-size: 32px;
            line-height: 1.35;
            font-weight: 550;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            padding-left: 16px;
        }

        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 4px;
            border-radius: 2px;
            background: var(--accent);
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-link {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: color 0.25s var(--ease);
        }

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

        .section-link .arrow-icon {
            transition: transform 0.25s var(--ease);
        }

        .section-link:hover .arrow-icon {
            transform: translateX(4px);
        }

        /* ======= Service Cards Grid ======= */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }

        .grid-main {
            min-width: 0;
        }

        .service-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }

        .service-card {
            background: var(--bg-panel);
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            position: relative;
            transition: background 0.3s var(--ease), transform 0.3s var(--ease), border-color 0.3s var(--ease);
            display: flex;
            flex-direction: column;
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: var(--accent);
            opacity: 0;
            transition: opacity 0.3s var(--ease);
        }

        .service-card:hover {
            background: #161C25;
            transform: translateY(-2px);
            border-color: rgba(216, 201, 163, 0.3);
        }

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

        .service-card .card-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--accent);
        }

        .service-card .card-icon svg {
            width: 22px;
            height: 22px;
        }

        .service-card .card-title {
            font-size: 18px;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .service-card .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }

        .service-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--line-soft);
            font-size: 13px;
            color: var(--text-muted);
        }

        .service-card .card-link {
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
        }

        .service-card .card-link .arrow-icon {
            transition: transform 0.25s var(--ease);
        }

        .service-card:hover .card-link .arrow-icon {
            transform: translateX(4px);
        }

        /* ======= Sidebar ======= */
        .sidebar {
            min-width: 0;
        }

        .sidebar-sticky {
            position: sticky;
            top: 96px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--bg-panel);
            border: 1px solid var(--line-soft);
            border-radius: var(--radius-md);
            padding: 28px;
        }

        .sidebar-card h3 {
            font-size: 18px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--line-soft);
        }

        .hot-list {
            display: flex;
            flex-direction: column;
        }

        .hot-item {
            display: flex;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--line-soft);
            transition: background 0.25s var(--ease);
        }

        .hot-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .hot-item .hot-num {
            font-family: var(--mono);
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
            width: 24px;
            flex-shrink: 0;
            transition: color 0.25s var(--ease);
        }

        .hot-item a {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            transition: color 0.25s var(--ease);
        }

        .hot-item:hover a {
            color: var(--accent);
        }

        .cat-nav-list {
            display: flex;
            flex-direction: column;
        }

        .cat-nav-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid var(--line-soft);
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s var(--ease), padding-left 0.25s var(--ease);
        }

        .cat-nav-link:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .cat-nav-link:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .cat-nav-link.active {
            color: var(--accent);
            font-weight: 500;
        }

        .cat-nav-link .cat-count {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--mono);
        }

        /* ======= CTA Banner ======= */
        .cta-banner {
            background: var(--bg-panel-light);
            border-radius: var(--radius-lg);
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(ellipse at center, rgba(216, 201, 163, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(ellipse at center, rgba(127, 168, 184, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-banner h2 {
            font-size: 32px;
            font-weight: 550;
            line-height: 1.4;
            margin-bottom: 12px;
        }

        .cta-banner p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
        }

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

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

        .faq-layout {
            display: grid;
            grid-template-columns: 360px 1fr;
            gap: 64px;
        }

        .faq-head .section-title {
            margin-bottom: 16px;
        }

        .faq-head p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
        }

        .faq-item {
            border-bottom: 1px solid var(--line-soft);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--line-soft);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            text-align: left;
            transition: color 0.25s var(--ease);
        }

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

        .faq-question .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform 0.3s var(--ease);
            color: var(--text-muted);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease);
            opacity: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
            opacity: 1;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.85;
            padding-bottom: 24px;
            max-width: 640px;
        }

        /* ======= Process Section ======= */
        .process-section {
            padding: var(--space-section) 0;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .process-step {
            position: relative;
            padding: 32px 24px 24px;
            background: var(--bg-panel);
            border-radius: var(--radius-md);
            border-bottom: 2px solid transparent;
            transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
        }

        .process-step:hover {
            border-bottom-color: var(--accent);
            transform: translateY(-2px);
        }

        .process-step .step-num {
            font-family: var(--mono);
            font-size: 14px;
            color: var(--accent);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
            display: block;
        }

        .process-step .step-title {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .process-step .step-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ======= Footer ======= */
        .site-footer {
            background: #0A0D11;
            border-top: 1px solid var(--line-soft);
            padding: 72px 0 32px;
        }

        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 48px;
            margin-bottom: 56px;
        }

        .footer-brand .logo {
            margin-bottom: 20px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.25s var(--ease);
        }

        .footer-col ul a:hover {
            color: var(--accent);
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-contact strong {
            font-weight: 500;
            color: var(--text-secondary);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 32px;
            border-top: 1px solid var(--line-soft);
            flex-wrap: wrap;
            gap: 16px;
        }

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

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

        .copyright a:hover {
            color: var(--accent);
        }

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

        .footer-links a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.25s var(--ease);
        }

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

        /* ======= Values / Feature row ======= */
        .features-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 48px;
        }

        .feature-item {
            padding: 28px 24px;
            background: var(--bg-panel);
            border-radius: var(--radius-md);
            border: 1px solid var(--line-soft);
            display: flex;
            gap: 16px;
            align-items: flex-start;
            transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
        }

        .feature-item:hover {
            border-color: rgba(216, 201, 163, 0.3);
            transform: translateY(-2px);
        }

        .feature-item .feature-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            flex-shrink: 0;
        }

        .feature-item .feature-icon svg {
            width: 18px;
            height: 18px;
        }

        .feature-item h4 {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-primary);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .feature-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ======= Pagination ======= */
        .pagination-wrap {
            display: flex;
            justify-content: center;
            margin-top: 48px;
        }

        .pagination {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-panel);
            border-radius: 999px;
            padding: 4px;
            border: 1px solid var(--line-soft);
        }

        .pagination a,
        .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 8px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-secondary);
            transition: all 0.25s var(--ease);
        }

        .pagination a:hover {
            color: var(--accent);
            background: rgba(216, 201, 163, 0.08);
        }

        .pagination .current {
            background: var(--accent);
            color: #14181F;
            font-weight: 600;
        }

        /* ======= Responsive ======= */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: 1fr;
            }
            .sidebar-sticky {
                position: static;
            }
            .sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .feature-item {
                padding: 20px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
            }
            .header-actions .command-search {
                display: none;
            }
            .main-nav {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .page-hero h1 {
                font-size: 34px;
                line-height: 1.3;
            }
            .page-hero .hero-cta .btn {
                flex: 1;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr 1fr;
            }
            .faq-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .features-row {
                grid-template-columns: 1fr;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                height: 64px;
            }
            .mobile-menu {
                top: 64px;
            }
            .logo-text {
                font-size: 17px;
            }
            .page-hero {
                padding: 56px 0 48px;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .page-hero .hero-desc {
                font-size: 14px;
            }
            .page-hero .hero-meta {
                gap: 8px;
                flex-direction: column;
                align-items: flex-start;
            }
            .page-hero .hero-meta .divider {
                display: none;
            }
            .page-hero .hero-cta {
                flex-direction: column;
            }
            .page-hero .hero-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 14px;
                margin-bottom: 32px;
            }
            .section-title {
                font-size: 26px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner {
                padding: 40px 24px;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
            .cta-banner .cta-actions {
                flex-direction: column;
            }
            .cta-banner .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .service-card {
                padding: 24px 20px;
            }
            .pagination a,
            .pagination span {
                min-width: 32px;
                height: 32px;
            }
        }

        @media (min-width: 769px) and (max-width: 1024px) {
            .header-actions .command-search {
                width: 180px;
            }
        }

        @media (max-width: 360px) {
            .header-inner {
                gap: 12px;
            }
            .logo-text {
                font-size: 16px;
            }
            .header-link {
                display: none;
            }
        }

        @media (hover: none) {
            .service-card:hover {
                transform: none;
            }
            .service-card:active {
                background: #161C25;
            }
        }