/* roulang page: index */
:root {
            --primary: #0f172a;
            --accent: #c8102e;
            --gold: #f59e0b;
            --bg: #ffffff;
            --bg-soft: #f8fafc;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 1rem;
            --radius-lg: 1.5rem;
            --shadow: 0 10px 40px -10px rgba(15, 23, 42, .12);
            --shadow-hover: 0 20px 50px -12px rgba(15, 23, 42, .2);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.7;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            display: block;
            max-width: 100%;
        }
        input,
        button {
            font-family: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 40px;
        }
        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            font-size: 1rem;
            color: var(--text-weak);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: .95rem;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(200, 16, 46, .25);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(200, 16, 46, .35);
            background: #a50d26;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 10px 26px;
            border-radius: 999px;
            font-weight: 600;
            font-size: .95rem;
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .badge {
            display: inline-block;
            background: rgba(200, 16, 46, .08);
            color: var(--accent);
            font-size: .75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: .02em;
        }
        .overline-tag {
            display: inline-block;
            font-size: .8rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: .1em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .site-header {
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 16px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--primary);
            white-space: nowrap;
        }
        .brand-logo .brand-accent {
            color: var(--accent);
        }
        .header-search {
            flex: 1;
            max-width: 460px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: #f1f5f9;
            border: 1px solid transparent;
            border-radius: 999px;
            padding: 0 10px 0 14px;
            height: 40px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(200, 16, 46, .1);
        }
        .search-box .search-icon {
            color: var(--text-weak);
            font-size: .85rem;
        }
        .search-box input {
            flex: 1;
            background: transparent;
            padding: 0 10px;
            font-size: .9rem;
            color: var(--text);
            min-width: 0;
        }
        .search-box input::placeholder {
            color: #94a3b8;
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            font-size: .8rem;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--accent);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: .92rem;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background: #f1f5f9;
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(15, 23, 42, .18);
        }
        .mobile-toggle {
            display: none;
            background: var(--primary);
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            font-size: 1rem;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu {
            display: none;
            padding: 12px 24px 18px;
            border-top: 1px solid var(--border);
            background: #fff;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 8px;
            border-radius: 10px;
            font-weight: 500;
            color: var(--text);
        }
        .mobile-menu a.active {
            background: var(--primary);
            color: #fff;
        }
        @media (max-width: 768px) {
            .header-search {
                display: none;
            }
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: inline-flex;
            }
            .mobile-menu.open {
                display: block;
            }
        }
        .hero {
            position: relative;
            padding: 100px 0 120px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(15, 23, 42, .72));
        }
        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #f1f5f9;
            font-size: .82rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 999px;
            letter-spacing: .04em;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(2.4rem, 6vw, 4rem);
            color: #fff;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .hero-sub {
            font-size: clamp(1rem, 2vw, 1.2rem);
            color: rgba(255, 255, 255, .9);
            line-height: 1.7;
            max-width: 580px;
            margin: 0 auto 32px;
        }
        .hero-search-wrap {
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .hero-search-box {
            display: flex;
            align-items: center;
            background: #fff;
            border-radius: 999px;
            padding: 6px 6px 6px 20px;
            box-shadow: 0 16px 50px rgba(0, 0, 0, .35);
        }
        .hero-search-box i {
            color: #94a3b8;
            font-size: .9rem;
            margin-right: 10px;
        }
        .hero-search-box input {
            flex: 1;
            padding: 10px 0;
            font-size: .95rem;
            color: var(--text);
            min-width: 0;
        }
        .hero-search-box button {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: .9rem;
            padding: 10px 28px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .hero-search-box button:hover {
            background: #a50d26;
        }
        .hero-tags {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #e2e8f0;
            font-size: .8rem;
            padding: 5px 14px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }
        .hero-tags .tag i {
            color: var(--gold);
            font-size: .7rem;
        }
        @media (max-width: 640px) {
            .hero {
                padding: 64px 0 80px;
            }
            .hero-search-box {
                flex-direction: column;
                border-radius: 20px;
                padding: 14px;
                gap: 8px;
            }
            .hero-search-box button {
                width: 100%;
            }
        }
        .stats-bar {
            background: var(--primary);
            color: #fff;
            margin-top: -40px;
            position: relative;
            z-index: 5;
            border-radius: 20px;
            box-shadow: var(--shadow);
            max-width: 1100px;
            margin-left: auto;
            margin-right: auto;
            padding: 24px 32px;
        }
        @media (max-width: 640px) {
            .stats-bar {
                margin: -20px 16px 0;
                padding: 20px;
            }
        }
        .stat-item {
            text-align: center;
            padding: 8px;
        }
        .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stat-label {
            font-size: .82rem;
            color: rgba(255, 255, 255, .7);
            margin-top: 4px;
        }
        .features {
            padding: 80px 0;
        }
        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            height: 100%;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, .15);
        }
        .feature-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: .92rem;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .category-entry-section {
            background: var(--bg-soft);
            padding: 70px 0;
        }
        .category-info {
            padding-left: 20px;
        }
        @media (max-width: 768px) {
            .category-info {
                padding-left: 0;
                padding-top: 24px;
            }
        }
        .category-info h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .category-info p {
            color: var(--text-weak);
            font-size: .95rem;
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .check-list {
            list-style: none;
            margin-bottom: 24px;
        }
        .check-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            font-size: .92rem;
            color: var(--text);
        }
        .check-list li i {
            color: #16a34a;
            font-size: 1rem;
        }
        .popular-content {
            padding: 80px 0;
        }
        .content-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .content-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            height: 180px;
            overflow: hidden;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s;
        }
        .content-card:hover .card-img img {
            transform: scale(1.06);
        }
        .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-tag {
            font-size: .72rem;
            font-weight: 700;
            color: var(--accent);
            background: rgba(200, 16, 46, .06);
            padding: 3px 10px;
            border-radius: 999px;
            display: inline-block;
            width: fit-content;
            margin-bottom: 10px;
        }
        .card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }
        .card-body p {
            font-size: .85rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
        }
        .card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            font-size: .82rem;
            font-weight: 600;
            color: var(--accent);
        }
        .latest-section {
            background: var(--bg-soft);
            padding: 70px 0;
        }
        .latest-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .latest-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .latest-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow);
            border-color: rgba(200, 16, 46, .2);
        }
        .latest-top {
            margin-bottom: 10px;
        }
        .latest-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.45;
            margin-bottom: 6px;
        }
        .latest-desc {
            font-size: .85rem;
            color: var(--text-weak);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .latest-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            font-size: .8rem;
            color: #94a3b8;
        }
        .more-link {
            color: var(--accent);
            font-weight: 600;
        }
        .empty-tip {
            text-align: center;
            color: var(--text-weak);
            font-size: 1rem;
            padding: 40px 0;
        }
        .steps-section {
            padding: 80px 0;
        }
        .step-item {
            text-align: center;
            padding: 32px 24px;
            border-radius: var(--radius);
            background: #fff;
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }
        .step-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .step-glow {
            font-size: 2.2rem;
            font-weight: 800;
            color: transparent;
            background: linear-gradient(135deg, var(--accent), var(--gold));
            -webkit-background-clip: text;
            background-clip: text;
            margin-bottom: 12px;
        }
        .step-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: .88rem;
            color: var(--text-weak);
            line-height: 1.65;
        }
        .cta-section {
            background: linear-gradient(135deg, #0f172a, #1e293b);
            padding: 80px 0;
        }
        .cta-inner {
            color: #fff;
            text-align: center;
        }
        .cta-inner h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 10px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, .8);
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            max-width: 480px;
            margin: 0 auto;
            background: #fff;
            border-radius: 999px;
            padding: 6px;
            gap: 6px;
        }
        .cta-form input {
            flex: 1;
            padding: 10px 16px;
            font-size: .9rem;
            border-radius: 999px;
            min-width: 0;
        }
        .cta-form button {
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .cta-form button:hover {
            background: #a50d26;
        }
        @media (max-width: 640px) {
            .cta-form {
                flex-direction: column;
                border-radius: 20px;
                padding: 14px;
                gap: 8px;
            }
            .cta-form button {
                width: 100%;
            }
        }
        .faq-section {
            padding: 80px 0;
            background: #fff;
        }
        .faq-item {
            background: var(--bg-soft);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 20px 24px;
            margin-bottom: 14px;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(200, 16, 46, .2);
        }
        .faq-item summary {
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: .9rem;
            color: var(--accent);
            transition: transform .3s;
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item p {
            margin-top: 12px;
            font-size: .9rem;
            color: var(--text-weak);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }
        .site-footer {
            background: var(--primary);
            color: #cbd5e1;
            padding-top: 56px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        .footer-logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: .88rem;
            line-height: 1.7;
            color: #94a3b8;
            max-width: 340px;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: .95rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .footer-links a {
            display: block;
            color: #94a3b8;
            font-size: .88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            font-size: .88rem;
            color: #94a3b8;
            margin-bottom: 8px;
        }
        .footer-contact a {
            color: #e2e8f0;
            font-size: .88rem;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            font-size: .82rem;
            color: #64748b;
            text-align: center;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .section-head {
                margin-bottom: 28px;
            }
            .footer-grid {
                gap: 20px;
            }
        }
        .article-page .article-body img {
            border-radius: 16px;
            margin: 24px 0;
        }
        .article-page .article-body h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary);
            margin: 28px 0 12px;
        }
        .article-page .article-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin: 24px 0 8px;
        }
        .article-page .article-body p {
            font-size: .95rem;
            line-height: 1.8;
            color: var(--text);
            margin-bottom: 16px;
        }
        .article-page .article-body ul {
            list-style: none;
            margin-bottom: 16px;
        }
        .article-page .article-body ul li {
            padding: 6px 0 6px 20px;
            position: relative;
        }
        .article-page .article-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 14px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }
        .article-page .article-body blockquote {
            background: var(--bg-soft);
            border-left: 4px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 20px 0;
            color: var(--text);
        }
        .category-page .category-banner {
            position: relative;
            padding: 72px 0;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .category-page .category-banner .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .9), rgba(15, 23, 42, .7));
        }
        .category-page .category-banner .content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }
        .category-page .category-banner h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            margin-bottom: 12px;
        }
        .category-page .category-banner p {
            font-size: 1rem;
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin: 0 auto;
        }
        .guide-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .guide-card .guide-img {
            height: 200px;
            overflow: hidden;
        }
        .guide-card .guide-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s;
        }
        .guide-card:hover .guide-img img {
            transform: scale(1.05);
        }
        .guide-card .guide-body {
            padding: 22px;
        }
        .guide-card .guide-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .guide-card .guide-body p {
            font-size: .86rem;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .tip-box {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: var(--transition);
            height: 100%;
        }
        .tip-box:hover {
            box-shadow: var(--shadow);
        }
        .tip-box i {
            color: var(--gold);
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .tip-box h4 {
            font-size: .95rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .tip-box p {
            font-size: .84rem;
            color: var(--text-weak);
            line-height: 1.55;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: .82rem;
            color: #94a3b8;
            margin-bottom: 20px;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .article-card-share {
            display: flex;
            gap: 10px;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .article-card-share span {
            font-size: .85rem;
            color: var(--text-weak);
            margin-right: 6px;
        }
        .article-card-share a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .8rem;
            background: var(--bg-soft);
            color: var(--text);
            transition: var(--transition);
        }
        .article-card-share a:hover {
            background: var(--primary);
            color: #fff;
        }
        .not-found {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found h1 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .not-found p {
            color: var(--text-weak);
            margin-bottom: 20px;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #142d4c;
            --primary-dark: #0c1e33;
            --primary-light: #334e68;
            --accent: #c5482f;
            --accent-hover: #a63a25;
            --gold: #c9a45c;
            --sand: #f6f1e7;
            --bg: #ffffff;
            --text: #1c2b3a;
            --text-weak: #5b6b7c;
            --border: #e5e0d8;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(20, 45, 76, .06);
            --shadow-md: 0 6px 24px rgba(20, 45, 76, .10);
            --shadow-lg: 0 12px 40px rgba(20, 45, 76, .16);
            --transition: all .3s ease;
        }
        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
            font-size: 16px;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        :focus-visible {
            outline: 3px solid rgba(197, 72, 47, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn i {
            font-size: 14px;
        }
        .btn-solid {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(197, 72, 47, .35);
        }
        .btn-solid:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(197, 72, 47, .45);
        }
        .btn-outline {
            border: 2px solid rgba(255, 255, 255, .7);
            color: #fff;
            background: transparent;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-navy {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(20, 45, 76, .25);
        }
        .btn-navy:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 26px rgba(20, 45, 76, .35);
        }
        .btn-gold {
            background: var(--gold);
            color: #142d4c;
            box-shadow: 0 4px 14px rgba(201, 164, 92, .35);
        }
        .btn-gold:hover {
            background: #b8914b;
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--border);
        }
        .btn-ghost:hover {
            border-color: var(--primary);
            background: rgba(20, 45, 76, .05);
        }
        /* ===== 头部导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            box-shadow: 0 2px 16px rgba(20, 45, 76, .08);
        }
        .header-main {
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .header-flex {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .site-logo {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: baseline;
            gap: 2px;
            line-height: 1.2;
            flex-shrink: 0;
        }
        .site-logo span {
            color: var(--accent);
            font-weight: 700;
        }
        .header-search {
            flex: 1;
            max-width: 560px;
            display: flex;
            align-items: center;
            background: #f5f6f8;
            border: 1.5px solid var(--border);
            border-radius: 999px;
            padding: 0 8px 0 18px;
            height: 46px;
            transition: var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(197, 72, 47, .12);
        }
        .header-search i {
            color: var(--text-weak);
            font-size: 14px;
            margin-right: 10px;
        }
        .header-search input {
            flex: 1;
            border: none;
            background: transparent;
            height: 100%;
            min-width: 0;
            color: var(--text);
        }
        .header-search input::placeholder {
            color: #9aa6b2;
        }
        .header-search button {
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            height: 34px;
            padding: 0 18px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }
        .header-search button:hover {
            background: var(--accent-hover);
        }
        .header-cta {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .header-cta:hover {
            background: var(--accent);
            transform: translateY(-1px);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            border: 1.5px solid var(--border);
            color: var(--primary);
            font-size: 18px;
            justify-content: center;
            align-items: center;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--sand);
        }
        .main-nav {
            display: flex;
            gap: 8px;
            padding: 12px 0;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .main-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 14.5px;
            font-weight: 500;
            color: var(--text-weak);
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(20, 45, 76, .06);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(20, 45, 76, .22);
        }
        /* ===== Hero 首屏 ===== */
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 90px 0 80px;
            color: #fff;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(12, 30, 51, .92) 0%, rgba(20, 45, 76, .78) 55%, rgba(20, 45, 76, .55) 100%);
        }
        .hero-content {
            position: relative;
            max-width: 760px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .7);
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .85);
        }
        .breadcrumb a:hover {
            color: var(--gold);
        }
        .breadcrumb i {
            font-size: 10px;
        }
        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .page-hero h1 em {
            font-style: normal;
            color: var(--gold);
        }
        .page-hero .lead {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
            margin-bottom: 28px;
        }
        .hero-search {
            display: flex;
            align-items: center;
            background: #fff;
            border-radius: 999px;
            padding: 6px 6px 6px 20px;
            max-width: 520px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, .25);
        }
        .hero-search i {
            color: var(--text-weak);
            margin-right: 10px;
        }
        .hero-search input {
            flex: 1;
            border: none;
            min-width: 0;
            color: var(--text);
        }
        .hero-search input::placeholder {
            color: #9aa6b2;
        }
        .hero-search button {
            background: var(--accent);
            color: #fff;
            border-radius: 999px;
            padding: 11px 26px;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
        }
        .hero-search button:hover {
            background: var(--accent-hover);
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 18px;
        }
        .hero-tags a {
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .hero-tags a:hover {
            background: rgba(255, 255, 255, .22);
            border-color: rgba(255, 255, 255, .5);
        }
        .hero-tags a i {
            font-size: 11px;
            margin-right: 4px;
            color: var(--gold);
        }
        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--sand);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 52px;
        }
        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(197, 72, 47, .08);
            color: var(--accent);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .section-eyebrow i {
            font-size: 11px;
        }
        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
            line-height: 1.7;
        }
        /* ===== 图标卡片 ===== */
        .icon-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .icon-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .icon-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--gold));
            transform: scaleX(0);
            transition: var(--transition);
            transform-origin: left;
        }
        .icon-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(197, 72, 47, .25);
        }
        .icon-card:hover::after {
            transform: scaleX(1);
        }
        .icon-card .icon {
            width: 58px;
            height: 58px;
            border-radius: 15px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .icon-card:nth-child(2) .icon {
            background: linear-gradient(135deg, var(--accent), #e08a5d);
        }
        .icon-card:nth-child(3) .icon {
            background: linear-gradient(135deg, #b8914b, var(--gold));
        }
        .icon-card:nth-child(4) .icon {
            background: linear-gradient(135deg, #2f6d5e, #57a08a);
        }
        .icon-card:nth-child(5) .icon {
            background: linear-gradient(135deg, #4a5fa5, #8496cc);
        }
        .icon-card:nth-child(6) .icon {
            background: linear-gradient(135deg, #7a4a91, #ab7ec2);
        }
        .icon-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .icon-card p {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .icon-card .arrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            opacity: 0;
            transform: translateX(-6px);
            transition: var(--transition);
        }
        .icon-card:hover .arrow {
            opacity: 1;
            transform: translateX(0);
        }
        /* ===== 文章卡片 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(20, 45, 76, .12);
        }
        .card-cover {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .article-card:hover .card-cover img {
            transform: scale(1.05);
        }
        .card-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(20, 45, 76, .55));
        }
        .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 255, 255, .94);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
        }
        .card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-body h3 {
            font-size: 17.5px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: var(--transition);
        }
        .article-card:hover .card-body h3 {
            color: var(--accent);
        }
        .card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 12.5px;
            color: #8a97a5;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .card-meta i {
            font-size: 12px;
            color: var(--gold);
        }
        /* ===== 数据带 ===== */
        .stats-band {
            background: var(--primary);
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }
        .stats-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 0%, rgba(197, 72, 47, .25), transparent 55%);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }
        .stat-item {
            text-align: center;
            color: #fff;
            padding: 20px 10px;
        }
        .stat-num {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.1;
            color: var(--gold);
            margin-bottom: 8px;
        }
        .stat-num em {
            font-style: normal;
            font-size: 22px;
            margin-left: 2px;
        }
        .stat-label {
            font-size: 14.5px;
            color: rgba(255, 255, 255, .8);
            letter-spacing: 1px;
        }
        .stat-divider {
            width: 1px;
            background: rgba(255, 255, 255, .18);
        }
        /* ===== 流程步骤 ===== */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-item {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            position: relative;
        }
        .step-item:nth-child(2) .step-num {
            background: var(--accent);
        }
        .step-item:nth-child(3) .step-num {
            background: var(--gold);
            color: var(--primary);
        }
        .step-item:nth-child(4) .step-num {
            background: #2f6d5e;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 13.5px;
            color: var(--text-weak);
            line-height: 1.65;
        }
        .step-arrow {
            position: absolute;
            top: 50%;
            right: -18px;
            transform: translateY(-50%);
            color: var(--gold);
            font-size: 16px;
            z-index: 2;
        }
        .steps-wrap .step-item:last-child .step-arrow {
            display: none;
        }
        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 14px;
            background: #fff;
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(197, 72, 47, .3);
        }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 26px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            text-align: left;
        }
        .faq-q i {
            color: var(--accent);
            transition: transform .35s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-q i {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            padding: 0 26px;
            color: var(--text-weak);
            font-size: 14.5px;
            line-height: 1.75;
            transition: max-height .4s ease, padding .4s ease;
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding: 0 26px 22px;
        }
        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-3.png') center/cover fixed no-repeat;
            padding: 90px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(12, 30, 51, .93), rgba(20, 45, 76, .82));
        }
        .cta-content {
            position: relative;
            max-width: 680px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 16.5px;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .cta-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* ===== 页脚 ===== */
        .site-footer {
            background: #0c1e33;
            color: rgba(255, 255, 255, .75);
        }
        .site-footer .container {
            padding-top: 60px;
            padding-bottom: 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }
        .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-logo span {
            color: var(--gold);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
            color: rgba(255, 255, 255, .65);
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            padding: 6px 0;
            color: rgba(255, 255, 255, .65);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--gold);
            padding-left: 6px;
        }
        .footer-contact p {
            font-size: 14px;
            margin-bottom: 8px;
            color: rgba(255, 255, 255, .65);
        }
        .footer-contact a {
            font-size: 14px;
            color: var(--gold);
        }
        .footer-contact a:hover {
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding: 20px 0;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
            text-align: center;
        }
        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .icon-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .step-arrow {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                position: relative;
            }
            .header-flex {
                gap: 12px;
            }
            .header-search {
                order: 3;
                max-width: none;
                width: 100%;
            }
            .header-flex {
                flex-wrap: wrap;
            }
            .site-logo {
                flex: 1;
            }
            .menu-toggle {
                display: flex;
                margin-left: auto;
            }
            .header-cta {
                display: none;
            }
            .header-search {
                display: none;
            }
            .header-search.show {
                display: flex;
                flex: 1 0 100%;
            }
            .main-nav {
                display: none;
                padding: 6px 0 14px;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                padding: 8px 16px;
            }
            .page-hero {
                padding: 60px 0 50px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
            .page-hero .lead {
                font-size: 15.5px;
            }
            .section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 27px;
            }
            .icon-grid,
            .article-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 16px;
            }
            .stat-num {
                font-size: 36px;
            }
            .stat-divider {
                display: none;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .cta-section {
                background-attachment: scroll;
                padding: 64px 0;
            }
            .cta-content h2 {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 18px;
            }
            .site-logo {
                font-size: 22px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-search {
                border-radius: 16px;
                flex-wrap: wrap;
                padding: 10px;
                gap: 8px;
            }
            .hero-search input {
                width: 100%;
                height: 40px;
                padding: 0 8px;
            }
            .hero-search button {
                width: 100%;
                border-radius: 10px;
            }
            .hero-tags {
                gap: 6px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-num {
                font-size: 30px;
            }
            .faq-q {
                font-size: 14.5px;
                padding: 16px 18px;
            }
            .faq-a {
                padding: 0 18px;
            }
            .faq-item.open .faq-a {
                padding: 0 18px 18px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .cta-btns {
                flex-direction: column;
            }
            .cta-btns .btn {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
  --primary: #16294a;
  --primary-light: #1e3a6e;
  --accent: #d62839;
  --accent-hover: #b81e2d;
  --bg: #f5f6fa;
  --surface: #ffffff;
  --text: #1b2333;
  --text-light: #60708a;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 4px 20px rgba(22, 41, 74, 0.06);
  --shadow-lg: 0 14px 44px rgba(22, 41, 74, 0.12);
  --transition: all 0.3s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}
.container { max-width: 1200px; margin-left: auto; margin-right: auto; padding-left: 24px; padding-right: 24px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; }
input, select, textarea { font-family: inherit; }
.section-py { padding-top: 72px; padding-bottom: 72px; }

/* ===== Header & Nav ===== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 16px rgba(22, 41, 74, 0.05);
  padding: 14px 0;
}
.header-row { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.logo {
  font-size: 26px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: -1px;
  white-space: nowrap;
  line-height: 1.2;
  text-decoration: none;
}
.logo span { color: var(--accent); }
.header-search { flex: 1; max-width: 520px; min-width: 220px; order: 3; width: 100%; margin-top: 4px; }
.search-form { position: relative; display: flex; align-items: center; }
.search-form .search-icon {
  position: absolute; left: 16px; color: var(--text-light); font-size: 14px; pointer-events: none;
}
.search-form input {
  width: 100%;
  padding: 11px 46px 11px 44px;
  border: 2px solid var(--border);
  border-radius: 50px;
  background: #f8fafc;
  font-size: 14px;
  outline: none;
  color: var(--text);
  transition: var(--transition);
}
.search-form input::placeholder { color: #94a3b8; }
.search-form input:focus {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(22, 41, 74, 0.08);
}
.search-form button {
  position: absolute;
  right: 5px;
  border: none;
  background: var(--primary);
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: var(--transition);
}
.search-form button:hover { background: var(--accent); transform: scale(1.05); }
.main-nav { display: flex; gap: 6px; align-items: center; margin-left: auto; order: 2; }
.nav-link {
  padding: 8px 18px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover { background: #eef1f7; color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(22, 41, 74, 0.2); }
.mobile-toggle {
  display: none;
  border: none;
  background: transparent;
  font-size: 20px;
  color: var(--primary);
  cursor: pointer;
  padding: 6px 10px;
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative;
  min-height: 320px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 20, 38, 0.92) 0%, rgba(16, 35, 64, 0.78) 50%, rgba(22, 41, 74, 0.55) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 60px;
  padding-bottom: 60px;
  max-width: 880px;
}
.hero-badge {
  display: inline-block;
  background: var(--accent);
  border-radius: 50px;
  padding: 5px 18px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
  box-shadow: 0 4px 12px rgba(214, 40, 57, 0.4);
}
.hero-content h1 {
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 800;
  line-height: 1.35;
  margin: 0 0 16px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}
.hero-meta { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; color: rgba(255, 255, 255, 0.9); }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta i { color: rgba(255, 255, 255, 0.7); }

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 18px 0 12px;
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.breadcrumb a { color: var(--text-light); transition: var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 11px; color: #b6c0d0; }

/* ===== Article Card & Content ===== */
.article-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 36px;
  margin-bottom: 32px;
  border: 1px solid rgba(226, 232, 240, 0.7);
}
.article-content { font-size: 16px; color: #2d3748; }
.article-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin: 32px 0 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid #edf0f5;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin: 26px 0 12px;
}
.article-content p { margin: 0 0 18px; }
.article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { text-decoration: none; }
.article-content ul, .article-content ol { margin: 0 0 20px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: #fdf3f4;
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 10px 10px 0;
  color: #4a5568;
  font-style: italic;
}
.article-content img { border-radius: 12px; margin: 24px 0; box-shadow: var(--shadow); }
.article-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 14px; }
.article-content th { background: var(--primary); color: #fff; padding: 12px 14px; font-weight: 600; text-align: left; }
.article-content td { padding: 10px 14px; border-bottom: 1px solid var(--border); }
.article-content tr:nth-child(even) { background: #f8fafc; }

.article-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--border); flex-wrap: wrap; gap: 12px; }
.article-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag-chip {
  background: #eef1f7;
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 50px;
  transition: var(--transition);
}
.tag-chip:hover { background: var(--primary); color: #fff; }

/* ===== Sidebar ===== */
.sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  border: 1px solid rgba(226, 232, 240, 0.6);
}
.sidebar-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.about-site { text-align: center; }
.about-site .about-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  margin: 0 auto 14px;
  box-shadow: 0 8px 20px rgba(22, 41, 74, 0.25);
}
.about-site p { font-size: 14px; color: var(--text-light); margin: 0 0 14px; line-height: 1.7; }
.sidebar-list { list-style: none; padding: 0; margin: 0; }
.sidebar-list li { margin-bottom: 12px; }
.sidebar-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  transition: var(--transition);
  padding: 8px 12px;
  border-radius: 10px;
}
.sidebar-list a:hover { background: #f0f2f7; color: var(--primary); transform: translateX(4px); }
.sidebar-list i { color: var(--accent); font-size: 14px; }
.sidebar-list .side-date { margin-left: auto; font-size: 12px; color: var(--text-light); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  font-size: 13px;
  font-weight: 600;
  background: #f0f2f7;
  color: var(--text);
  padding: 5px 14px;
  border-radius: 50px;
  transition: var(--transition);
}
.tag-cloud a:hover { background: var(--accent); color: #fff; }

/* ===== Not Found ===== */
.not-found-box { text-align: center; padding: 60px 20px; }
.not-found-box i { font-size: 56px; color: #cbd5e1; margin-bottom: 20px; }
.not-found-box h2 { font-size: 28px; color: var(--primary); margin: 0 0 12px; }
.not-found-box p { color: var(--text-light); margin-bottom: 24px; }
.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 12px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 6px 16px rgba(22, 41, 74, 0.2);
}
.btn-primary:hover { background: var(--accent); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(214, 40, 57, 0.3); }

/* ===== Section Titles ===== */
.section-title {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  color: var(--primary);
  text-align: center;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}
.section-subtitle {
  text-align: center;
  color: var(--text-light);
  font-size: 15px;
  margin-bottom: 40px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.section-divider {
  width: 64px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 4px;
  margin: 0 auto 12px;
}

/* ===== Related Cards ===== */
.related-section { background: var(--surface); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.related-card .card-img { position: relative; overflow: hidden; height: 180px; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .card-img img { transform: scale(1.06); }
.related-card .card-img .card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(214, 40, 57, 0.92);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 50px;
}
.related-card .card-body { padding: 20px; }
.related-card .card-body h3 { font-size: 16px; font-weight: 700; margin: 0 0 8px; line-height: 1.5; }
.related-card .card-body h3 a { color: var(--text); transition: var(--transition); }
.related-card .card-body h3 a:hover { color: var(--accent); }
.related-card .card-body p { font-size: 13px; color: var(--text-light); margin: 0 0 12px; line-height: 1.6; }
.related-card .card-body .card-meta { font-size: 12px; color: #94a3b8; display: flex; gap: 12px; }

/* ===== Guide Section ===== */
.guide-section { background: var(--bg); position: relative; }
.guide-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.guide-item {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.guide-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.guide-item:hover::before { opacity: 1; }
.guide-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.guide-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  box-shadow: 0 6px 16px rgba(22, 41, 74, 0.2);
}
.guide-item h3 { font-size: 16px; font-weight: 700; margin: 0 0 8px; }
.guide-item p { font-size: 13px; color: var(--text-light); margin: 0; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-section { background: var(--surface); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: #cbd5e1; }
.faq-item summary {
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 13px;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item details[open] summary::after { transform: rotate(180deg); }
.faq-item[open] { background: #fafbfd; }
.faq-answer { padding: 0 22px 18px; font-size: 14px; color: var(--text-light); line-height: 1.7; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff;
  padding: 64px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -60px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
}
.cta-inner { position: relative; z-index: 2; text-align: center; max-width: 640px; margin: 0 auto; }
.cta-inner h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin: 0 0 14px; }
.cta-inner p { font-size: 15px; color: rgba(255, 255, 255, 0.85); margin: 0 0 28px; line-height: 1.7; }
.btn-light {
  display: inline-block;
  background: #fff;
  color: var(--primary);
  padding: 13px 36px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2); }
.btn-outline {
  display: inline-block;
  border: 2px solid rgba(255, 255, 255, 0.6);
  color: #fff;
  padding: 11px 34px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  margin-left: 12px;
  transition: var(--transition);
}
.btn-outline:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-2px); }

/* ===== Footer ===== */
.site-footer { background: #0e1a2e; color: rgba(255, 255, 255, 0.75); padding-top: 52px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-logo { font-size: 24px; font-weight: 900; color: #fff; margin-bottom: 12px; }
.footer-logo span { color: var(--accent); }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer-links h4, .footer-contact h4 { font-size: 16px; font-weight: 700; color: #fff; margin: 0 0 16px; }
.footer-links a { display: block; font-size: 14px; color: rgba(255, 255, 255, 0.7); padding: 5px 0; transition: var(--transition); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact p { font-size: 14px; margin: 0 0 8px; }
.footer-contact a { color: var(--accent); font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

/* ===== Responsive ===== */
@media (min-width: 1024px) {
  .header-search { order: 2; margin-top: 0; width: auto; }
  .main-nav { order: 3; }
  .mobile-toggle { display: none !important; }
}
@media (max-width: 1023px) {
  .header-search { order: 3; width: 100%; max-width: none; margin-top: 10px; }
  .main-nav { order: 2; margin-left: auto; }
  .mobile-toggle { display: block; order: 2; margin-left: auto; }
  .main-nav { display: none; }
  .main-nav.open { display: flex; flex-direction: column; width: 100%; order: 4; margin-top: 10px; gap: 4px; padding-top: 10px; border-top: 1px solid var(--border); }
  .main-nav.open .nav-link { width: 100%; text-align: left; border-radius: 10px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .guide-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .section-py { padding-top: 48px; padding-bottom: 48px; }
  .article-card { padding: 24px; }
  .cta-section { padding: 48px 0; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .logo { font-size: 22px; }
  .guide-grid { grid-template-columns: 1fr; }
  .hero-content h1 { font-size: 24px; }
  .article-card { padding: 20px; border-radius: 16px; }
  .hero-meta { gap: 10px; flex-direction: column; }
  .btn-light, .btn-outline { width: 100%; margin: 0 0 10px; }
  .btn-outline { margin-left: 0; }
}

/* Utility overrides */
.btn-primary:focus-visible, .btn-light:focus-visible, .search-form input:focus-visible, .nav-link:focus-visible {
  outline: 3px solid rgba(214, 40, 57, 0.4);
  outline-offset: 2px;
}