/* roulang page: index */
:root {
            --primary: #D8A14E;
            --primary-dark: #9E7030;
            --primary-light: #F0C987;
            --bg: #0B0C0F;
            --card-bg: #14161B;
            --input-bg: #101216;
            --border: rgba(255, 255, 255, 0.08);
            --text: #EDE8DE;
            --text-mid: #9AA3AD;
            --text-dim: #5C6470;
            --success: #46B98B;
            --radius-lg: 20px;
            --radius-md: 10px;
            --radius-sm: 4px;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
            --shadow-hover: 0 14px 48px rgba(0, 0, 0, 0.6);
            --font: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--text);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        button {
            border: none;
            background: none;
            font-family: var(--font);
            cursor: pointer;
        }
        input,
        select,
        textarea {
            font-family: var(--font);
            font-size: 14px;
            color: var(--text);
            outline: none;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1240px !important;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 28px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 48px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-primary-custom {
            background: var(--primary);
            color: #0B0C0F;
            border: 1px solid var(--primary);
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #0B0C0F;
            box-shadow: 0 8px 24px rgba(216, 161, 78, 0.25);
            transform: translateY(-1px);
        }
        .btn-outline-custom {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .btn-outline-custom:hover {
            border-color: rgba(216, 161, 78, 0.6);
            color: var(--primary-light);
            transform: translateY(-1px);
        }
        .btn-outline-custom .arrow-icon {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .btn-outline-custom:hover .arrow-icon {
            transform: translateX(4px);
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid rgba(216, 161, 78, 0.5);
            outline-offset: 2px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 68px;
            z-index: 1000;
            background: rgba(11, 12, 15, 0.6);
            border-bottom: 1px solid transparent;
            transition: background 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background: var(--bg);
            border-bottom-color: var(--border);
        }
        .nav-container {
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary) 60%);
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
            color: #0B0C0F;
            line-height: 1;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
        }
        .brand-text:hover {
            color: var(--primary-light);
        }
        .desktop-nav ul {
            display: flex;
            align-items: center;
            gap: 34px;
            margin: 0;
            padding: 0;
        }
        .desktop-nav a {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 6px 0;
            transition: color 0.2s ease;
        }
        .desktop-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width 0.2s ease;
        }
        .desktop-nav a:hover {
            color: var(--primary);
        }
        .desktop-nav a:hover::after {
            width: 100%;
        }
        .desktop-nav a.active {
            color: var(--primary);
        }
        .desktop-nav a.active::after {
            width: 100%;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            height: 38px;
            padding: 0 18px;
            border-radius: 8px;
            border: 1px solid rgba(216, 161, 78, 0.4);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
        }
        .nav-cta:hover {
            background: rgba(216, 161, 78, 0.1);
            color: var(--primary-light);
            border-color: var(--primary);
        }
        .hamburger {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            color: var(--text);
            font-size: 18px;
        }
        .hamburger:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Mobile Menu */
        .mobile-menu {
            position: fixed;
            inset: 0;
            background: rgba(11, 12, 15, 0.95);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-menu ul {
            text-align: center;
            padding: 0;
            margin: 0;
        }
        .mobile-menu li {
            margin: 14px 0;
        }
        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            opacity: 0;
            transform: translateX(20px);
            transition: opacity 0.3s ease, transform 0.3s ease, color 0.2s;
            line-height: 44px;
        }
        .mobile-menu.open a {
            opacity: 1;
            transform: translateX(0);
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
        }
        .mobile-menu .menu-contact {
            margin-top: 30px;
            color: var(--text-mid);
            font-size: 14px;
            text-align: center;
        }
        .mobile-close {
            position: absolute;
            top: 20px;
            right: 24px;
            font-size: 28px;
            color: var(--text);
            background: none;
            border: none;
            line-height: 1;
        }
        .mobile-close:hover {
            color: var(--primary);
        }

        /* Hero */
        .hero {
            min-height: 100vh;
            min-height: 720px;
            display: flex;
            align-items: flex-end;
            position: relative;
            background: linear-gradient(180deg, rgba(11, 12, 15, 0.82), rgba(11, 12, 15, 0.96)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding: 140px 0 90px;
            overflow: hidden;
        }
        .hero-bg-scaler {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            transform: scale(1.02);
            animation: heroZoom 10s linear forwards;
            z-index: 0;
        }
        @keyframes heroZoom {
            0% { transform: scale(1.02); }
            100% { transform: scale(1); }
        }
        .hero-grid-overlay {
            position: absolute;
            top: 0;
            right: 0;
            width: 45%;
            height: 100%;
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 32px 32px;
            opacity: 0.15;
            z-index: 1;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 760px;
        }
        .hero-title {
            font-size: clamp(40px, 5vw, 64px);
            line-height: 1.15;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text);
            margin-bottom: 24px;
        }
        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-mid);
            margin-bottom: 36px;
            max-width: 600px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .scroll-indicator {
            position: absolute;
            bottom: 32px;
            left: 24px;
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 2;
            color: var(--text-dim);
            font-size: 13px;
            writing-mode: vertical-rl;
        }
        .scroll-line {
            width: 1px;
            height: 46px;
            background: var(--border);
            position: relative;
            overflow: hidden;
        }
        .scroll-line::after {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 12px;
            background: var(--primary);
            animation: scrollDot 1.8s infinite;
        }
        @keyframes scrollDot {
            0% { transform: translateY(-12px); }
            50% { transform: translateY(24px); }
            100% { transform: translateY(50px); }
        }

        /* Hero entrance animations */
        .hero .fade-item {
            opacity: 0;
            transform: translateY(12px);
            animation: heroFadeUp 0.6s ease-out forwards;
        }
        .hero .fade-item:nth-child(1) { animation-delay: 0.1s; }
        .hero .fade-item:nth-child(2) { animation-delay: 0.25s; }
        .hero .fade-item:nth-child(3) { animation-delay: 0.4s; }
        @keyframes heroFadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Section general */
        .section {
            padding: 96px 0;
            position: relative;
        }
        .section-head {
            margin-bottom: 52px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            position: relative;
            padding-left: 18px;
            margin-bottom: 12px;
        }
        .section-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 32px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-desc {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
            max-width: 620px;
        }
        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 26px;
            }
        }
        @media (max-width: 576px) {
            .section {
                padding: 48px 0;
            }
        }

        /* Features */
        .features-section {
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .feature-card {
            padding: 48px 40px;
            position: relative;
            transition: background 0.3s ease;
        }
        .feature-card + .feature-card {
            border-left: 1px solid rgba(255, 255, 255, 0.08);
        }
        .feature-card:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 26px;
            border: 1.5px solid rgba(216, 161, 78, 0.35);
            margin-bottom: 20px;
            transition: all 0.25s ease;
        }
        .feature-card:hover .feature-icon {
            border-color: var(--primary);
            color: var(--primary-light);
            background: rgba(216, 161, 78, 0.08);
        }
        .feature-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text);
        }
        .feature-title::after {
            content: "";
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            margin-top: 10px;
            margin-bottom: 14px;
            opacity: 0.6;
        }
        .feature-desc {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.65;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .feature-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .feature-link i {
            transition: transform 0.25s ease;
        }
        .feature-link:hover {
            color: var(--primary-light);
        }
        .feature-link:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .feature-card + .feature-card {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
            }
            .feature-card {
                padding: 36px 28px;
            }
        }

        /* Stats */
        .stats-section {
            padding: 64px 0;
            background: var(--bg);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 16px 12px;
        }
        .stat-number {
            font-size: 52px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            letter-spacing: -0.02em;
            font-variant-numeric: tabular-nums;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-mid);
        }
        @media (max-width: 768px) {
            .stats-grid {
                gap: 12px;
            }
            .stat-number {
                font-size: 32px;
            }
            .stat-label {
                font-size: 12px;
            }
        }
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 4px;
            }
            .stat-number {
                font-size: 28px;
            }
        }

        /* Showcase */
        .showcase-section {
            background: var(--bg);
        }
        .showcase-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .showcase-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .showcase-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(216, 161, 78, 0.3);
        }
        .showcase-img-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #101216;
        }
        .showcase-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .showcase-card:hover .showcase-img-wrap img {
            transform: scale(1.04);
        }
        .showcase-img-wrap::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(11, 12, 15, 0.4));
        }
        .showcase-body {
            padding: 28px 30px 32px;
        }
        .showcase-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(216, 161, 78, 0.4);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .showcase-title {
            font-size: 21px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }
        .showcase-desc {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .showcase-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* News / CMS */
        .news-section {
            background: #0D0E12;
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .news-card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 32px 30px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(216, 161, 78, 0.3);
        }
        .news-badge {
            display: inline-block;
            width: fit-content;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(216, 161, 78, 0.5);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 12px;
            color: var(--text);
            transition: color 0.2s ease;
        }
        .news-card:hover h3 {
            color: var(--primary-light);
        }
        .news-card p {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            padding-top: 16px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-dim);
        }
        .news-footer a {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-footer a i {
            transition: transform 0.25s ease;
        }
        .news-footer a:hover i {
            transform: translateX(4px);
        }
        .news-empty {
            grid-column: 1 / -1;
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            padding: 64px 24px;
            text-align: center;
            color: var(--text-mid);
            font-size: 15px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }
        .news-empty i {
            font-size: 42px;
            color: var(--text-dim);
        }
        .view-all-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }
        .view-all-btn i {
            transition: transform 0.25s ease;
        }
        .view-all-btn:hover i {
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-card {
                padding: 24px 20px;
            }
        }

        /* CTA Form */
        .cta-section {
            background: var(--bg);
        }
        .cta-card {
            background: radial-gradient(ellipse at 80% 80%, rgba(216, 161, 78, 0.06), transparent 60%), var(--card-bg);
            border-radius: 24px;
            border: 1px solid var(--border);
            padding: 56px;
            box-shadow: var(--shadow);
            display: grid;
            grid-template-columns: 40% 60%;
            gap: 48px;
            align-items: center;
        }
        .cta-left-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .cta-left-title .highlight {
            color: var(--primary);
        }
        .cta-left-desc {
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
        }
        .form-wrapper .form-row {
            margin-bottom: 18px;
        }
        .form-control-custom {
            width: 100%;
            height: 48px;
            background: var(--input-bg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 0 16px;
            color: var(--text);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .form-control-custom::placeholder {
            color: var(--text-dim);
        }
        .form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(216, 161, 78, 0.15);
        }
        .form-control-custom select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%235C6470' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
        }
        .form-submit {
            width: 100%;
            height: 48px;
            background: var(--primary);
            border: none;
            border-radius: var(--radius-md);
            color: #0B0C0F;
            font-size: 15px;
            font-weight: 700;
            transition: all 0.2s ease;
        }
        .form-submit:hover {
            background: var(--primary-light);
            box-shadow: 0 8px 24px rgba(216, 161, 78, 0.25);
        }
        .privacy-note {
            font-size: 12px;
            color: var(--text-dim);
            margin-top: 12px;
        }
        .privacy-note a {
            color: var(--text-dim);
            text-decoration: underline;
            transition: color 0.2s;
        }
        .privacy-note a:hover {
            color: var(--primary);
        }
        @media (max-width: 992px) {
            .cta-card {
                grid-template-columns: 1fr;
                padding: 40px 28px;
                gap: 32px;
            }
            .cta-left-title {
                font-size: 24px;
            }
        }

        /* FAQ */
        .faq-section {
            background: #0D0E12;
            border-top: 1px solid var(--border);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0 48px;
        }
        @media (max-width: 992px) {
            .faq-grid {
                grid-template-columns: 1fr;
                gap: 0;
            }
        }
        .faq-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            position: relative;
        }
        .faq-item::before {
            content: "";
            position: absolute;
            left: -14px;
            top: 20px;
            width: 3px;
            height: 0;
            background: var(--primary);
            border-radius: 2px;
            transition: height 0.25s ease;
        }
        .faq-item.active::before {
            height: 28px;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            padding: 4px 0;
            transition: color 0.2s ease;
            background: none;
            border: none;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 1px solid rgba(216, 161, 78, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            flex-shrink: 0;
            transition: transform 0.25s ease, background 0.25s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(216, 161, 78, 0.12);
        }
        .faq-answer {
            font-size: 14px;
            color: var(--text-mid);
            line-height: 1.7;
        }
        .faq-answer p {
            padding-top: 12px;
            margin-bottom: 0;
        }

        /* Footer */
        .site-footer {
            background: #08090C;
            border-top: 1px solid rgba(216, 161, 78, 0.1);
            padding: 60px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
        }
        .footer-brand .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 10px;
            font-family: Georgia, "STSong", "SimSun", serif;
            letter-spacing: 0.04em;
        }
        .footer-brand .footer-logo .highlight {
            color: var(--primary);
        }
        .footer-brand p {
            color: var(--text-mid);
            font-size: 14px;
            line-height: 1.7;
            max-width: 260px;
            margin-bottom: 16px;
        }
        .footer-icp {
            color: var(--text-dim);
            font-size: 12px;
        }
        .footer-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 18px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-mid);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-mid);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-contact i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 22px;
            text-align: center;
            font-size: 12px;
            color: var(--text-dim);
            line-height: 2;
        }
        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        /* Modal */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 2000;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .modal-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        .modal-box {
            width: 520px;
            max-width: 100%;
            background: #14161B;
            border-radius: 16px;
            padding: 40px 36px;
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
            position: relative;
            transform: translateY(20px);
            transition: transform 0.3s ease;
            border: 1px solid var(--border);
        }
        .modal-overlay.active .modal-box {
            transform: translateY(0);
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-mid);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }
        .modal-close:hover {
            background: rgba(216, 161, 78, 0.12);
            color: var(--primary);
        }
        .modal-title {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }
        .modal-subtitle {
            font-size: 14px;
            color: var(--text-mid);
            margin-bottom: 24px;
        }
        @media (max-width: 576px) {
            .modal-box {
                padding: 32px 22px;
                width: 92vw;
            }
        }

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.45s ease-out, transform 0.45s ease-out;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            .hero-bg-scaler {
                animation: none;
                transform: scale(1);
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
            .hero .fade-item {
                opacity: 1;
                transform: none;
                animation: none;
            }
        }

        /* Responsive header */
        @media (max-width: 992px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: inline-flex;
            }
        }
        @media (min-width: 993px) {
            .mobile-menu {
                display: none;
            }
        }

/* roulang page: category1 */
:root {
            --gold: #D8A14E;
            --gold-dark: #9E7030;
            --gold-light: #F0C987;
            --bg: #0B0C0F;
            --surface: #14161B;
            --input-bg: #101216;
            --border: rgba(255, 255, 255, 0.08);
            --border-gold: rgba(216, 161, 78, 0.3);
            --text: #EDE8DE;
            --text-secondary: #9AA3AD;
            --text-muted: #5C6470;
            --green: #46B98B;
            --radius-card: 20px;
            --radius-btn: 10px;
            --radius-badge: 4px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
            --shadow-card-hover: 0 14px 48px rgba(0, 0, 0, 0.6);
            --shadow-btn: 0 8px 24px rgba(216, 161, 78, 0.25);
            --font: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
            margin: 0 auto;
        }
        .section {
            padding: 96px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
        }
        .section-title .gold {
            color: var(--gold);
        }
        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-title-bar {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .section-title-bar::before {
            content: "";
            width: 4px;
            height: 22px;
            background: var(--gold);
            border-radius: 2px;
        }
        /* ============ Header ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 68px;
            z-index: 1000;
            background: rgba(11, 12, 15, 0.68);
            border-bottom: 1px solid transparent;
            backdrop-filter: blur(6px);
            transition: background 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background: #0B0C0F;
            border-bottom: 1px solid var(--border);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--gold);
            color: #0B0C0F;
            font-size: 18px;
            font-weight: 800;
            border-radius: 8px;
            line-height: 1;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
        }
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 36px;
            margin: 0;
            padding: 0;
        }
        .desktop-nav a {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 6px 2px;
        }
        .desktop-nav a::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--gold);
            transition: width 0.2s ease;
        }
        .desktop-nav a:hover,
        .desktop-nav a.active {
            color: var(--gold);
        }
        .desktop-nav a:hover::after,
        .desktop-nav a.active::after {
            width: 100%;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            height: 38px;
            padding: 0 18px;
            background: var(--gold);
            color: #0B0C0F;
            font-size: 14px;
            font-weight: 700;
            border-radius: var(--radius-btn);
            transition: background 0.25s ease, transform 0.25s ease;
        }
        .nav-cta:hover {
            background: var(--gold-light);
            transform: translateY(-1px);
            color: #0B0C0F;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 20px;
            cursor: pointer;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        /* Mobile full menu */
        .mobile-menu {
            position: fixed;
            inset: 0;
            z-index: 999;
            background: rgba(11, 12, 15, 0.92);
            display: none;
            flex-direction: column;
            justify-content: space-between;
            padding: 100px 40px 48px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-menu.open {
            display: flex;
            opacity: 1;
        }
        .mobile-menu ul {
            list-style: none;
            padding: 0;
        }
        .mobile-menu li {
            opacity: 0;
            transform: translateX(24px);
            transition: opacity 0.4s ease, transform 0.4s ease;
        }
        .mobile-menu.open li {
            opacity: 1;
            transform: translateX(0);
        }
        .mobile-menu a {
            display: block;
            font-size: 20px;
            line-height: 44px;
            font-weight: 600;
            color: var(--text);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .mobile-menu a:hover {
            color: var(--gold);
        }
        .mobile-menu-bottom {
            margin-top: 32px;
        }
        .mobile-menu-bottom p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 6px;
        }
        .mobile-menu-cta {
            display: inline-flex;
            margin-top: 16px;
            height: 48px;
            padding: 0 28px;
            align-items: center;
            justify-content: center;
            background: var(--gold);
            color: #0B0C0F;
            font-weight: 700;
            border-radius: var(--radius-btn);
        }
        .menu-close {
            position: absolute;
            top: 24px;
            right: 24px;
            width: 40px;
            height: 40px;
            background: none;
            border: none;
            color: var(--text);
            font-size: 20px;
            cursor: pointer;
        }
        /* ============ Banner ============ */
        .page-banner {
            position: relative;
            height: 300px;
            background: linear-gradient(180deg, rgba(11, 12, 15, 0.78), rgba(11, 12, 15, 0.95)), url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            display: flex;
            align-items: flex-end;
            padding-bottom: 48px;
            margin-top: 68px;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-wrap {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .breadcrumb-wrap a {
            color: var(--text-secondary);
        }
        .breadcrumb-wrap a:hover {
            color: var(--gold);
        }
        .breadcrumb-wrap .sep {
            margin: 0 8px;
            color: var(--text-muted);
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .page-banner .banner-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ============ Guide Cards ============ */
        .cards-section {
            padding: 96px 0 72px;
        }
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .guide-card {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--border-gold);
        }
        .card-thumb {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-thumb img {
            transform: scale(1.04);
        }
        .card-thumb .badge-gold {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(11, 12, 15, 0.72);
            border: 1px solid var(--gold);
            color: var(--gold-light);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.04em;
        }
        .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card-body .card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 14px;
        }
        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--gold);
            transition: gap 0.25s ease;
        }
        .read-more:hover {
            color: var(--gold-light);
            gap: 10px;
        }
        /* ============ Features ============ */
        .features-section {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 96px 0;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
        }
        .feature-item {
            padding: 32px 36px;
            border-right: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease;
            position: relative;
        }
        .feature-item:last-child {
            border-right: none;
        }
        .feature-item:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1.5px solid var(--gold);
            border-radius: 18px;
            color: var(--gold);
            font-size: 26px;
            margin-bottom: 20px;
        }
        .feature-item .feature-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 12px;
            position: relative;
            padding-bottom: 10px;
        }
        .feature-item .feature-name::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--gold);
            border-radius: 1px;
        }
        .feature-item .feature-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ============ Scenarios ============ */
        .scenarios-section {
            background: linear-gradient(180deg, var(--bg) 0%, rgba(11, 12, 15, 0.98) 100%);
            padding: 96px 0;
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .scenario-item {
            background: var(--surface);
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.06);
            padding: 36px 28px;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, border-color 0.25s ease;
        }
        .scenario-item:hover {
            transform: translateY(-4px);
            border-color: var(--border-gold);
        }
        .scenario-item .scenario-num {
            font-size: 40px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px var(--gold);
            margin-bottom: 20px;
            line-height: 1;
        }
        .scenario-item h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
        .scenario-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* ============ FAQ ============ */
        .faq-section {
            padding: 96px 0;
        }
        .faq-list {
            max-width: 1080px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            position: relative;
            transition: padding-left 0.3s ease;
        }
        .faq-item.active {
            padding-left: 12px;
        }
        .faq-item.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 20px;
            bottom: 20px;
            width: 3px;
            background: var(--gold);
            border-radius: 2px;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            background: none;
            border: none;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            text-align: left;
            cursor: pointer;
            padding: 6px 0;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--gold);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 50%;
            color: var(--gold);
            font-size: 13px;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--gold);
            color: #0B0C0F;
            border-color: var(--gold);
        }
        .faq-answer {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-top: 8px;
            padding-right: 40px;
        }
        /* ============ CTA ============ */
        .cta-section {
            padding: 96px 0;
            background: linear-gradient(135deg, rgba(11, 12, 15, 0.92), rgba(20, 22, 27, 0.96)), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .cta-card {
            background: var(--surface);
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: var(--shadow-card);
            display: flex;
            overflow: hidden;
        }
        .cta-left {
            width: 40%;
            padding: 48px 44px;
            background: rgba(11, 12, 15, 0.5);
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .cta-left h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }
        .cta-left p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .cta-right {
            width: 60%;
            padding: 48px 44px;
        }
        .cta-form .form-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 6px;
        }
        .cta-form .form-control,
        .cta-form .form-select {
            height: 48px;
            background: var(--input-bg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-btn);
            color: var(--text);
            font-size: 14px;
            padding: 0 16px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .cta-form .form-control:focus,
        .cta-form .form-select:focus {
            background: var(--input-bg);
            border-color: var(--gold);
            box-shadow: 0 0 0 3px rgba(216, 161, 78, 0.15);
            color: var(--text);
        }
        .cta-form .form-control::placeholder {
            color: var(--text-muted);
        }
        .cta-form .form-select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239AA3AD' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 16px center;
        }
        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            background: var(--gold);
            color: #0B0C0F;
            font-size: 15px;
            font-weight: 700;
            border: none;
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: background 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
        }
        .btn-gold:hover {
            background: var(--gold-light);
            color: #0B0C0F;
            transform: translateY(-1px);
            box-shadow: var(--shadow-btn);
        }
        .btn-gold:focus-visible {
            outline: 3px solid rgba(216, 161, 78, 0.4);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 48px;
            padding: 0 28px;
            background: transparent;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-btn);
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease;
        }
        .btn-outline:hover {
            border-color: var(--gold);
            color: var(--gold);
            background: rgba(216, 161, 78, 0.06);
        }
        .privacy-note {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 12px;
        }
        .privacy-note a {
            color: var(--text-muted);
            text-decoration: underline;
        }
        .privacy-note a:hover {
            color: var(--gold);
        }
        /* ============ Footer ============ */
        .site-footer {
            background: #08090C;
            border-top: 1px solid rgba(216, 161, 78, 0.1);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.02em;
        }
        .footer-logo .highlight {
            color: var(--gold);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 16px 0;
            max-width: 300px;
        }
        .footer-icp {
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .footer-links a:hover {
            color: var(--gold);
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .footer-contact i {
            color: var(--gold);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 0;
            text-align: center;
        }
        .footer-bottom div {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-bottom div:first-child {
            margin-bottom: 6px;
        }
        /* ============ Responsive ============ */
        @media (max-width: 1200px) {
            .desktop-nav ul {
                gap: 24px;
            }
        }
        @media (max-width: 992px) {
            .section {
                padding: 64px 0;
            }
            .cards-grid,
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .feature-item {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                padding: 28px 20px;
            }
            .feature-item:last-child {
                border-bottom: none;
            }
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: inline-flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .cta-card {
                flex-direction: column;
            }
            .cta-left,
            .cta-right {
                width: 100%;
                padding: 36px 28px;
            }
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 28px;
            }
            .page-banner {
                height: 260px;
                padding-bottom: 36px;
            }
            .page-banner h1 {
                font-size: 34px;
            }
            .cards-grid,
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .faq-answer {
                padding-right: 0;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .brand-text {
                font-size: 18px;
            }
            .page-banner h1 {
                font-size: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-left,
            .cta-right {
                padding: 28px 20px;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: article */
/* ===== 1. 设计变量 & Reset ===== */
        :root {
            --primary: #D8A14E;
            --primary-dark: #9E7030;
            --primary-light: #F0C987;
            --bg: #0B0C0F;
            --bg-deep: #08090C;
            --card: #14161B;
            --input-bg: #101216;
            --border: rgba(255, 255, 255, 0.08);
            --text: #EDE8DE;
            --text-secondary: #9AA3AD;
            --text-muted: #5C6470;
            --green: #46B98B;
            --radius-lg: 20px;
            --radius-md: 10px;
            --radius-sm: 4px;
            --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
            --shadow-card-hover: 0 14px 48px rgba(0, 0, 0, 0.6);
            --transition: all 0.25s ease;
            --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 2. 通用组件 ===== */
        .section-padding {
            padding: 96px 0;
        }

        .section-heading {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 40px;
        }

        .section-heading h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.01em;
            position: relative;
            padding-left: 20px;
            line-height: 1.3;
            margin: 0;
        }

        .section-heading h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            bottom: 4px;
            width: 4px;
            border-radius: 2px;
            background: var(--primary);
        }

        .heading-line {
            flex: 1;
            height: 1px;
            background: var(--border);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 48px;
            padding: 0 26px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: 1px solid transparent;
            line-height: 1;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #0B0C0F;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(216, 161, 78, 0.15);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            color: #0B0C0F;
            transform: translateY(-1px);
            box-shadow: 0 8px 24px rgba(216, 161, 78, 0.25);
        }

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

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .badge-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border: 1px solid rgba(216, 161, 78, 0.45);
            border-radius: var(--radius-sm);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        /* ===== 3. 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 68px;
            background: rgba(11, 12, 15, 0.6);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

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

        .brand-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: #0B0C0F;
            font-size: 18px;
            font-weight: 800;
            border-radius: 8px;
            box-shadow: 0 0 16px rgba(216, 161, 78, 0.3);
        }

        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.02em;
        }

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

        .desktop-nav {
            display: flex;
            align-items: center;
        }

        .desktop-nav ul {
            display: flex;
            gap: 34px;
            margin: 0;
            padding: 0;
        }

        .desktop-nav li {
            position: relative;
        }

        .desktop-nav li a {
            display: block;
            padding: 6px 2px;
            font-size: 15px;
            color: var(--text);
            font-weight: 400;
            position: relative;
            transition: var(--transition);
        }

        .desktop-nav li a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: width 0.25s ease;
        }

        .desktop-nav li a:hover,
        .desktop-nav li a.active {
            color: var(--primary);
        }

        .desktop-nav li a:hover::after,
        .desktop-nav li a.active::after {
            width: 100%;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .nav-cta {
            height: 38px;
            padding: 0 18px;
            border: 1px solid rgba(216, 161, 78, 0.5);
            border-radius: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--primary);
            color: #0B0C0F;
            border-color: var(--primary);
        }

        .hamburger {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text);
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .hamburger:hover {
            background: rgba(216, 161, 78, 0.15);
            color: var(--primary);
        }

        /* 移动端菜单 */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            background: rgba(11, 12, 15, 0.94);
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
            padding: 32px;
        }

        .mobile-menu.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-menu-inner {
            text-align: center;
            max-width: 400px;
            width: 100%;
        }

        .mobile-menu-inner ul {
            margin-bottom: 30px;
        }

        .mobile-menu-inner ul li a {
            display: block;
            font-size: 20px;
            line-height: 44px;
            color: var(--text);
            font-weight: 500;
            transition: var(--transition);
        }

        .mobile-menu-inner ul li a:hover {
            color: var(--primary);
        }

        .mobile-menu-contact {
            margin-bottom: 28px;
        }

        .mobile-menu-contact p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 30px;
            margin: 0;
        }

        .mobile-menu-contact p i {
            color: var(--primary);
            margin-right: 8px;
        }

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

        /* ===== 4. 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 130px 0 58px;
            background:
                linear-gradient(180deg, rgba(11, 12, 15, 0.86), rgba(11, 12, 15, 0.95)),
                url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            border-bottom: 1px solid var(--border);
            margin-top: 68px;
        }

        .article-hero .breadcrumb {
            margin: 0 0 22px;
        }

        .article-hero .breadcrumb-item {
            font-size: 13px;
            color: var(--text-muted);
        }

        .article-hero .breadcrumb-item a {
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .article-hero .breadcrumb-item + .breadcrumb-item::before {
            color: var(--text-muted);
            content: '/';
            padding-right: 8px;
        }

        .article-hero .breadcrumb-item.active {
            color: var(--primary);
        }

        .hero-article-category {
            margin-bottom: 14px;
        }

        .article-hero h1 {
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 700;
            line-height: 1.22;
            letter-spacing: -0.01em;
            color: var(--text);
            max-width: 860px;
            margin: 0;
        }

        /* ===== 5. 文章正文区 ===== */
        .article-content-section {
            padding: 60px 0 70px;
        }

        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            font-size: 13px;
            color: var(--text-muted);
            padding-bottom: 34px;
            margin-bottom: 38px;
            border-bottom: 1px solid var(--border);
        }

        .article-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta-row .meta-item i {
            color: var(--primary);
            font-size: 12px;
        }

        .article-reader {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
            max-width: 860px;
        }

        .article-reader > * + * {
            margin-top: 1.6em;
        }

        .article-reader h2 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            padding-left: 18px;
            border-left: 4px solid var(--primary);
            margin-top: 48px;
            margin-bottom: 0;
        }

        .article-reader h3 {
            font-size: 21px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--primary-light);
            margin-top: 34px;
        }

        .article-reader p {
            margin-top: 0;
            color: var(--text-secondary);
        }

        .article-reader p + p {
            margin-top: 1.2em;
        }

        .article-reader a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-reader blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(216, 161, 78, 0.06);
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            color: var(--text-secondary);
            font-style: normal;
            margin: 1.6em 0;
        }

        .article-reader blockquote p {
            margin: 0;
            color: var(--text-secondary);
        }

        .article-reader img {
            max-width: 100%;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-card);
        }

        .article-reader ul {
            padding-left: 0;
        }

        .article-reader ul li {
            position: relative;
            padding-left: 26px;
            margin-bottom: 10px;
            color: var(--text-secondary);
        }

        .article-reader ul li::before {
            content: '';
            position: absolute;
            left: 6px;
            top: 11px;
            width: 6px;
            height: 6px;
            background: var(--primary);
            border-radius: 50%;
        }

        .article-reader ol {
            padding-left: 0;
            counter-reset: item;
        }

        .article-reader ol li {
            position: relative;
            padding-left: 36px;
            margin-bottom: 12px;
            color: var(--text-secondary);
            counter-increment: item;
        }

        .article-reader ol li::before {
            content: counter(item);
            position: absolute;
            left: 0;
            top: 2px;
            width: 24px;
            height: 24px;
            background: rgba(216, 161, 78, 0.12);
            border: 1px solid rgba(216, 161, 78, 0.3);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .article-reader code {
            background: var(--input-bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 3px 8px;
            font-size: 14px;
            color: var(--primary-light);
        }

        .article-reader pre {
            background: var(--input-bg);
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 20px;
            overflow-x: auto;
            margin: 24px 0;
        }

        .article-reader pre code {
            background: none;
            border: none;
            padding: 0;
        }

        /* 空内容占位 */
        .article-empty {
            padding: 60px 32px;
            text-align: center;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
        }

        .article-empty-icon {
            font-size: 42px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .article-empty p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 12px;
        }

        /* ===== 6. 返回入口 ===== */
        .article-back-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid var(--border);
        }

        /* ===== 7. 相关推荐 ===== */
        .related-section {
            padding: 64px 0;
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .related-card {
            display: block;
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-4px);
            border-color: rgba(216, 161, 78, 0.3);
            box-shadow: var(--shadow-card-hover);
        }

        .related-img-wrap {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--input-bg);
        }

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

        .related-card:hover .related-img-wrap img {
            transform: scale(1.04);
        }

        .related-body {
            padding: 22px 20px 18px;
        }

        .related-body h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin: 0 0 10px;
            color: var(--text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .related-body h3 {
            color: var(--primary);
        }

        .related-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .related-more {
            color: var(--primary);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: var(--transition);
        }

        .related-more i {
            transition: transform 0.25s ease;
        }

        .related-card:hover .related-more i {
            transform: translateX(4px);
        }

        /* ===== 8. 平台优势 ===== */
        .features-section {
            padding: 70px 0;
        }

        .feature-card-wrap {
            display: flex;
            flex-direction: column;
            gap: 16px;
            padding: 32px 28px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card-wrap::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), rgba(216, 161, 78, 0.1));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .feature-card-wrap:hover {
            transform: translateY(-4px);
            border-color: rgba(216, 161, 78, 0.25);
            box-shadow: var(--shadow-card-hover);
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(216, 161, 78, 0.1);
            border: 1px solid rgba(216, 161, 78, 0.25);
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 6px;
        }

        .feature-card-wrap h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 0;
            color: var(--text);
        }

        .feature-card-wrap p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin: 0;
        }

        /* ===== 9. CTA 区块 ===== */
        .cta-section {
            padding: 62px 0;
        }

        .cta-card {
            background:
                linear-gradient(135deg, rgba(216, 161, 78, 0.05), rgba(11, 12, 15, 0.5)),
                url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border: 1px solid rgba(216, 161, 78, 0.15);
            border-radius: 24px;
            padding: 52px 48px;
            position: relative;
            overflow: hidden;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 12, 15, 0.82), rgba(11, 12, 15, 0.94));
            z-index: 0;
        }

        .cta-card > * {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: clamp(26px, 2.6vw, 34px);
            font-weight: 700;
            line-height: 1.35;
            margin: 0 0 14px;
            color: var(--text);
        }

        .cta-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 520px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 26px;
        }

        /* ===== 10. FAQ ===== */
        .faq-section {
            padding: 64px 0 76px;
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
        }

        .faq-accordion .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--border);
            border-radius: 0;
            padding: 0;
        }

        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            padding: 20px 0;
            border: none;
            box-shadow: none;
            position: relative;
            transition: var(--transition);
            border-radius: 0;
        }

        .faq-accordion .accordion-button::before {
            content: '';
            position: absolute;
            left: 0;
            top: 16px;
            bottom: 16px;
            width: 3px;
            background: var(--primary);
            border-radius: 2px;
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::before {
            opacity: 1;
        }

        .faq-accordion .accordion-button::after {
            background: none;
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\2b';
            color: var(--text-muted);
            width: 24px;
            height: 24px;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transform: none;
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-accordion .accordion-button:hover {
            color: var(--primary);
        }

        .faq-accordion .accordion-body {
            padding: 0 0 20px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* ===== 11. 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid rgba(216, 161, 78, 0.1);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .footer-logo .highlight {
            color: var(--primary);
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 16px;
            max-width: 280px;
        }

        .footer-icp {
            font-size: 12px;
            color: var(--text-muted);
        }

        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 22px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

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

        .footer-links li a:hover {
            color: var(--primary);
            padding-left: 6px;
        }

        .footer-contact li {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact li i {
            color: var(--primary);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 22px 0;
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .footer-bottom div + div {
            margin-top: 4px;
        }

        /* ===== 12. 响应式 ===== */
        @media (min-width: 768px) {
            .faq-accordion {
                column-count: 2;
                column-gap: 48px;
            }

            .faq-accordion .accordion-item {
                break-inside: avoid;
                page-break-inside: avoid;
            }
        }

        @media (max-width: 991.98px) {
            .desktop-nav {
                display: none;
            }

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

            .hamburger {
                display: inline-flex;
            }

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

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

            .article-meta-row {
                gap: 14px;
            }
        }

        @media (max-width: 767.98px) {
            .section-padding {
                padding: 48px 0;
            }

            .article-hero {
                padding: 110px 0 48px;
            }

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

            .article-content-section {
                padding: 42px 0 50px;
            }

            .article-meta-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding-bottom: 26px;
                margin-bottom: 30px;
            }

            .cta-card {
                padding: 36px 24px;
            }

            .related-section {
                padding: 48px 0;
            }

            .features-section {
                padding: 48px 0;
            }

            .faq-section {
                padding: 48px 0 56px;
            }

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

        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-brand p {
                max-width: none;
            }

            .article-reader {
                font-size: 16px;
            }

            .article-back-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .article-back-actions .btn {
                width: 100%;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .related-body h3 {
                font-size: 17px;
            }
        }

        /* 减少动态效果 */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }