/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #2d3436;
            --color-primary-light: #4a5558;
            --color-secondary: #b8860b;
            --color-secondary-light: #d4a843;
            --color-secondary-dark: #8b6914;
            --color-accent: #8b4513;
            --color-accent-light: #a05a2c;
            --color-bg: #faf8f5;
            --color-bg-alt: #f3efe8;
            --color-bg-dark: #2d2a24;
            --color-card: #ffffff;
            --color-card-border: #e8e2d8;
            --color-text: #2d3436;
            --color-text-light: #6c757d;
            --color-text-inverse: #faf8f5;
            --color-border: #ddd6cc;
            --color-border-light: #ede8e0;
            --color-shadow: rgba(45, 52, 54, 0.08);
            --color-shadow-hover: rgba(45, 52, 54, 0.16);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 6px var(--color-shadow);
            --shadow-md: 0 6px 20px var(--color-shadow);
            --shadow-lg: 0 12px 40px var(--color-shadow-hover);
            --font-serif: 'Noto Serif SC', 'Georgia', serif;
            --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 4rem;
            --spacing-xl: 6rem;
            --container-max: 1200px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --header-height: 120px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-secondary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--color-secondary-dark); }
        a:focus-visible { outline: 2px solid var(--color-secondary); outline-offset: 2px; border-radius: var(--radius-sm); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        button:focus-visible { outline: 2px solid var(--color-secondary); outline-offset: 2px; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-serif); line-height: 1.3; color: var(--color-primary); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 900; }
        h2 { font-size: clamp(1.6rem, 3vw, 2.6rem); font-weight: 700; }
        h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); font-weight: 600; }
        h4 { font-size: 1.15rem; font-weight: 600; }
        p { margin-bottom: 1rem; }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }
        section { padding: var(--spacing-lg) 0; }
        @media (max-width: 768px) { section { padding: var(--spacing-md) 0; } }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .text-secondary { color: var(--color-secondary); }
        .section-title {
            margin-bottom: var(--spacing-md);
            position: relative;
            display: inline-block;
        }
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--color-secondary);
            margin-top: 0.6rem;
            border-radius: 2px;
        }
        .section-title-center::after { margin-left: auto; margin-right: auto; }
        .section-subtitle {
            color: var(--color-text-light);
            font-size: 1.05rem;
            max-width: 680px;
            margin: 0 auto var(--spacing-md);
            font-weight: 300;
        }
        .badge {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            font-size: 0.8rem;
            font-weight: 500;
            border-radius: 20px;
            background: var(--color-bg-alt);
            color: var(--color-text-light);
            border: 1px solid var(--color-border-light);
            font-family: var(--font-sans);
        }
        .badge-primary {
            background: var(--color-secondary);
            color: #fff;
            border-color: var(--color-secondary);
        }
        .badge-sm { padding: 0.1rem 0.5rem; font-size: 0.7rem; }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.8rem;
            font-size: 0.95rem;
            font-weight: 500;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: 2px solid transparent;
            font-family: var(--font-sans);
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--color-secondary);
            color: #fff;
            border-color: var(--color-secondary);
        }
        .btn-primary:hover {
            background: var(--color-secondary-dark);
            border-color: var(--color-secondary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-primary:active { transform: translateY(0); box-shadow: none; }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-border);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-2px);
        }
        .btn-outline:active { transform: translateY(0); }
        .btn-lg { padding: 0.9rem 2.4rem; font-size: 1.05rem; border-radius: var(--radius-lg); }
        .btn-sm { padding: 0.4rem 1rem; font-size: 0.85rem; border-radius: var(--radius-sm); }

        /* ===== 卡片 ===== */
        .card {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body { padding: var(--spacing-sm); }
        .card-title { font-family: var(--font-serif); font-weight: 600; margin-bottom: 0.4rem; font-size: 1.1rem; }
        .card-text { color: var(--color-text-light); font-size: 0.9rem; line-height: 1.6; }

        /* ===== Header / 双层导航 ===== */
        .site-header {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.7rem 0;
            gap: var(--spacing-sm);
        }
        .logo {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--color-primary);
            line-height: 1.2;
            white-space: nowrap;
        }
        .logo span { color: var(--color-secondary); }
        .logo small {
            display: block;
            font-size: 0.65rem;
            font-weight: 400;
            color: var(--color-text-light);
            font-family: var(--font-sans);
            letter-spacing: 1px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--color-bg);
            border: 1px solid var(--color-border-light);
            border-radius: 30px;
            padding: 0.3rem 0.3rem 0.3rem 1rem;
            transition: all var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--color-secondary);
            box-shadow: 0 0 0 3px rgba(184,134,11,0.12);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 0.3rem 0;
            font-size: 0.85rem;
            min-width: 140px;
            outline: none;
            color: var(--color-text);
        }
        .header-search input::placeholder { color: var(--color-text-light); }
        .header-search button {
            background: var(--color-secondary);
            color: #fff;
            border-radius: 50%;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background var(--transition);
            font-size: 0.85rem;
        }
        .header-search button:hover { background: var(--color-secondary-dark); }

        /* 导航第二行 - Tabs */
        .nav-tabs-wrap {
            border-top: 1px solid var(--color-border-light);
            background: var(--color-bg);
        }
        .nav-tabs {
            display: flex;
            gap: 0.2rem;
            padding: 0.4rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs::-webkit-scrollbar { display: none; }
        .nav-tabs a {
            flex-shrink: 0;
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-light);
            border-radius: 30px;
            transition: all var(--transition);
            white-space: nowrap;
            font-family: var(--font-sans);
        }
        .nav-tabs a:hover { color: var(--color-primary); background: var(--color-bg-alt); }
        .nav-tabs a.active {
            color: #fff;
            background: var(--color-primary);
            font-weight: 600;
        }
        .nav-tabs a i { margin-right: 0.4rem; font-size: 0.8rem; }

        /* 汉堡菜单 (移动) */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 4px;
            cursor: pointer;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: var(--spacing-xl) 0;
            background: var(--color-bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.45;
            filter: saturate(0.8) brightness(0.7);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(45,52,54,0.85) 0%, rgba(45,52,54,0.6) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            padding: 0 var(--spacing-sm);
        }
        .hero-badge {
            display: inline-block;
            padding: 0.3rem 1.2rem;
            background: rgba(184,134,11,0.2);
            border: 1px solid rgba(184,134,11,0.3);
            border-radius: 30px;
            color: var(--color-secondary-light);
            font-size: 0.85rem;
            font-weight: 400;
            margin-bottom: 1.2rem;
            backdrop-filter: blur(4px);
            letter-spacing: 2px;
        }
        .hero h1 {
            color: var(--color-text-inverse);
            margin-bottom: 1rem;
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
        .hero h1 .highlight { color: var(--color-secondary-light); }
        .hero p {
            color: rgba(255,255,255,0.8);
            font-size: 1.15rem;
            max-width: 600px;
            margin: 0 auto var(--spacing-md);
            font-weight: 300;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: var(--spacing-sm);
        }
        .hero-actions .btn {
            backdrop-filter: blur(4px);
        }
        .hero-actions .btn-primary {
            background: var(--color-secondary);
            border-color: var(--color-secondary);
        }
        .hero-actions .btn-outline-light {
            border-color: rgba(255,255,255,0.4);
            color: #fff;
        }
        .hero-actions .btn-outline-light:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.7);
        }
        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 2.5rem;
            margin-top: var(--spacing-md);
            flex-wrap: wrap;
        }
        .hero-stat { text-align: center; }
        .hero-stat-number {
            font-family: var(--font-serif);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-secondary-light);
            display: block;
        }
        .hero-stat-label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
            font-weight: 300;
        }

        /* ===== 介绍板块 ===== */
        .intro-section {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border-light);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-card-border);
        }
        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }
        .intro-text h2 { margin-bottom: 1rem; }
        .intro-text p { color: var(--color-text-light); font-size: 1rem; }
        .intro-text .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.8rem;
            margin-top: 1.2rem;
        }
        .intro-text .intro-features li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.92rem;
            color: var(--color-text);
        }
        .intro-text .intro-features li i {
            color: var(--color-secondary);
            font-size: 0.85rem;
            width: 1.2rem;
            text-align: center;
        }

        /* ===== 分类入口 ===== */
        .category-section {
            background: var(--color-bg-alt);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
        }
        .category-card {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            text-align: center;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-secondary);
        }
        .category-card .card-img {
            border-radius: var(--radius-sm);
            aspect-ratio: 16 / 9;
            margin-bottom: 0.8rem;
        }
        .category-card h3 { font-size: 1.15rem; margin-bottom: 0.3rem; }
        .category-card p { font-size: 0.88rem; color: var(--color-text-light); margin-bottom: 0.8rem; }
        .category-card .btn { margin-top: 0.4rem; }

        /* ===== 核心优势 ===== */
        .features-section {
            background: var(--color-card);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
        }
        .feature-card {
            text-align: center;
            padding: var(--spacing-md) var(--spacing-sm);
            border-radius: var(--radius-md);
            background: var(--color-bg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            background: var(--color-card);
            border-color: var(--color-card-border);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 1rem;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-secondary);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .feature-card:hover .feature-icon {
            background: var(--color-secondary);
            color: #fff;
            border-color: var(--color-secondary);
        }
        .feature-card h3 { font-size: 1.1rem; margin-bottom: 0.4rem; }
        .feature-card p { font-size: 0.9rem; color: var(--color-text-light); }

        /* ===== 最新资讯 ===== */
        .news-section {
            background: var(--color-bg-alt);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
        }
        .news-card {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .news-card .card-img {
            aspect-ratio: 16 / 9;
            width: 100%;
            object-fit: cover;
        }
        .news-card .card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            padding: 1rem 1.2rem 1.2rem;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.78rem;
            color: var(--color-text-light);
            margin-bottom: 0.4rem;
        }
        .news-card .card-meta .badge { font-size: 0.7rem; }
        .news-card .card-title {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: var(--color-primary);
            line-height: 1.4;
        }
        .news-card .card-text {
            font-size: 0.88rem;
            color: var(--color-text-light);
            flex: 1;
            margin-bottom: 0.6rem;
        }
        .news-card .card-link {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-secondary);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            margin-top: auto;
        }
        .news-card .card-link:hover { gap: 0.6rem; }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: var(--spacing-lg) var(--spacing-sm);
            color: var(--color-text-light);
            background: var(--color-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
            font-size: 1rem;
        }

        /* ===== 使用流程 ===== */
        .process-section {
            background: var(--color-card);
        }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-md);
            margin-top: var(--spacing-sm);
            position: relative;
            counter-reset: step;
        }
        .process-step {
            text-align: center;
            padding: var(--spacing-md) var(--spacing-sm);
            position: relative;
            counter-increment: step;
        }
        .process-step::before {
            content: counter(step);
            display: block;
            width: 48px;
            height: 48px;
            line-height: 48px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            border: 2px solid var(--color-border-light);
            margin: 0 auto 1rem;
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--color-secondary);
            transition: all var(--transition);
        }
        .process-step:hover::before {
            background: var(--color-secondary);
            color: #fff;
            border-color: var(--color-secondary);
        }
        .process-step h3 { font-size: 1.05rem; margin-bottom: 0.3rem; }
        .process-step p { font-size: 0.88rem; color: var(--color-text-light); margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-bg-alt);
        }
        .faq-list {
            max-width: 780px;
            margin: var(--spacing-sm) auto 0;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-card-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--color-border); }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 1.2rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-primary);
            text-align: left;
            background: transparent;
            font-family: var(--font-sans);
            line-height: 1.4;
            gap: 1rem;
        }
        .faq-question i { color: var(--color-secondary); transition: transform var(--transition); font-size: 0.85rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 1.2rem;
            color: var(--color-text-light);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 280px;
            padding: 0 1.2rem 1.2rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            filter: brightness(0.5);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: var(--spacing-lg) 0;
        }
        .cta-content h2 {
            color: var(--color-text-inverse);
            margin-bottom: 0.8rem;
        }
        .cta-content p {
            color: rgba(255,255,255,0.7);
            max-width: 560px;
            margin: 0 auto var(--spacing-md);
            font-weight: 300;
        }
        .cta-content .btn-primary {
            background: var(--color-secondary);
            border-color: var(--color-secondary);
            font-size: 1.05rem;
            padding: 0.9rem 2.6rem;
        }
        .cta-content .btn-primary:hover {
            background: var(--color-secondary-light);
            border-color: var(--color-secondary-light);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.7);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-md);
            padding-bottom: var(--spacing-md);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: var(--spacing-md);
        }
        .footer-brand .logo { color: var(--color-text-inverse); font-size: 1.4rem; }
        .footer-brand .logo span { color: var(--color-secondary-light); }
        .footer-brand p { margin-top: 0.8rem; font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 300px; }
        .footer-col h4 {
            color: var(--color-text-inverse);
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.55);
            padding: 0.25rem 0;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--color-secondary-light); }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.35); }
        .footer-bottom a:hover { color: var(--color-secondary-light); }
        .footer-bottom .tech {
            font-size: 0.75rem;
            opacity: 0.6;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .intro-grid { gap: var(--spacing-md); }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }
            .footer-brand { grid-column: 1 / -1; }
        }

        @media (max-width: 768px) {
            :root { --header-height: 110px; }
            .header-top { flex-wrap: wrap; padding: 0.5rem 0; }
            .logo { font-size: 1.2rem; }
            .logo small { font-size: 0.55rem; }
            .header-search input { min-width: 100px; width: 100px; }
            .hamburger { display: flex; }
            .nav-tabs-wrap {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--color-card);
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-md);
                z-index: 999;
                padding: 0.6rem 0;
            }
            .nav-tabs-wrap.open { display: block; }
            .nav-tabs {
                flex-direction: column;
                padding: 0;
                gap: 0;
            }
            .nav-tabs a {
                padding: 0.7rem var(--spacing-sm);
                border-radius: 0;
                border-bottom: 1px solid var(--color-border-light);
                display: block;
            }
            .nav-tabs a:last-child { border-bottom: none; }
            .nav-tabs a.active { background: var(--color-bg-alt); color: var(--color-primary); }
            .hero { min-height: 60vh; padding: var(--spacing-md) 0; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 1.5rem; }
            .hero-stat-number { font-size: 1.5rem; }
            .intro-grid { grid-template-columns: 1fr; }
            .intro-image { order: -1; }
            .intro-image img { min-height: 220px; }
            .intro-text .intro-features { grid-template-columns: 1fr; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr 1fr; gap: var(--spacing-sm); }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-content h2 { font-size: 1.6rem; }
        }

        @media (max-width: 520px) {
            .header-search input { min-width: 80px; width: 80px; font-size: 0.8rem; }
            .header-actions .btn-sm { display: none; }
            .hero { min-height: 50vh; }
            .hero h1 { font-size: 1.6rem; }
            .hero p { font-size: 0.9rem; }
            .hero-stats { gap: 1rem; }
            .hero-stat-number { font-size: 1.2rem; }
            .features-grid { grid-template-columns: 1fr; }
            .process-steps { grid-template-columns: 1fr; }
            .category-grid { grid-template-columns: 1fr; }
            .section-title { font-size: 1.3rem; }
            .section-subtitle { font-size: 0.9rem; }
            .btn-lg { padding: 0.7rem 1.8rem; font-size: 0.95rem; }
        }

        /* ===== 滚动动画（轻量） ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2a1f1a;
            --primary-light: #4a3728;
            --accent: #c9a96e;
            --accent-hover: #dbb87a;
            --accent-dim: #8a7a5a;
            --bg-dark: #1a1410;
            --bg-medium: #2a221c;
            --bg-card: #2f2620;
            --bg-light: #f5efe8;
            --text-light: #f0e8dd;
            --text-muted: #a09588;
            --text-dim: #7a6f62;
            --border: #3d322a;
            --border-light: #4d3f34;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
            --radius: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-base: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-heading: 'Georgia', 'Times New Roman', serif;
            --transition: 0.3s ease;
            --max-width: 1200px;
            --nav-height: 64px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-light);
            background: var(--bg-dark);
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus-visible {
            color: var(--accent-hover);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-light);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: var(--primary);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            padding: 0 20px;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .logo {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-light);
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }
        .logo span {
            color: var(--accent);
        }
        .logo small {
            font-size: 0.6rem;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.5px;
        }
        .logo a {
            color: inherit;
        }
        .logo a:hover {
            color: var(--accent);
        }

        /* 导航 Tabs */
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-medium);
            border-radius: var(--radius);
            padding: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tabs a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
        }
        .nav-tabs a i {
            font-size: 0.85rem;
        }
        .nav-tabs a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-tabs a.active,
        .nav-tabs a[aria-current="page"] {
            background: var(--accent);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-tabs a.active i,
        .nav-tabs a[aria-current="page"] i {
            color: var(--primary);
        }

        /* 移动端汉堡菜单（仅在小屏显示） */
        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-light);
            font-size: 1.5rem;
            padding: 8px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        /* ===== Banner / Hero (分类页) ===== */
        .category-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 60px 20px;
            background: var(--bg-medium) url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 2px solid var(--border);
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 20, 16, 0.85) 0%, rgba(42, 31, 26, 0.7) 100%);
            z-index: 1;
        }
        .category-banner>* {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            max-width: 780px;
        }
        .banner-content h1 {
            font-size: 2.6rem;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .banner-content h1 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .banner-content p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 20px;
        }
        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 12px;
        }
        .banner-tags .tag {
            background: rgba(201, 169, 110, 0.18);
            border: 1px solid rgba(201, 169, 110, 0.3);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 70px 0;
        }
        .section-alt {
            background: var(--bg-medium);
        }
        .section-divider {
            border-top: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--accent);
            margin: 12px auto 0;
            border-radius: 2px;
        }
        .section-header p {
            color: var(--text-muted);
            max-width: 620px;
            margin: 12px auto 0;
            font-size: 1.05rem;
        }

        /* ===== 简介区 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-text h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .intro-text p {
            color: var(--text-muted);
            font-size: 1.05rem;
        }
        .intro-text .intro-stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
        }
        .intro-text .stat-item {
            text-align: center;
        }
        .intro-text .stat-item .num {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent);
            display: block;
        }
        .intro-text .stat-item .label {
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .intro-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            width: 100%;
            object-fit: cover;
        }

        /* ===== 指南卡片 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--border-light);
        }
        .guide-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .guide-card .card-body {
            padding: 24px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .guide-card .card-body h3 i {
            color: var(--accent);
            margin-right: 8px;
            font-size: 1rem;
        }
        .guide-card .card-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            flex: 1;
        }
        .guide-card .card-body .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .guide-card .card-body .card-meta .badge {
            background: rgba(201, 169, 110, 0.15);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 500;
        }
        .guide-card .card-body .btn-text {
            color: var(--accent);
            font-weight: 500;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }
        .guide-card .card-body .btn-text:hover {
            gap: 10px;
        }

        /* ===== 使用流程 ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .process-step:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .process-step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 36px;
            height: 36px;
            background: var(--accent);
            color: var(--primary);
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 12px rgba(201, 169, 110, 0.3);
        }
        .process-step .icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 14px;
            margin-top: 6px;
        }
        .process-step h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .process-step p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== 进阶技巧 ===== */
        .tips-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .tip-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .tip-item:hover {
            border-color: var(--accent-dim);
            box-shadow: var(--shadow-sm);
        }
        .tip-item .tip-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: rgba(201, 169, 110, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.1rem;
        }
        .tip-item .tip-content h4 {
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .tip-item .tip-content p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-question {
            width: 100%;
            background: none;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-question i {
            color: var(--accent);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            display: none;
            line-height: 1.8;
        }
        .faq-answer.open {
            display: block;
        }
        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-medium) url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            position: relative;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 20, 16, 0.88) 0%, rgba(42, 31, 26, 0.75) 100%);
            z-index: 1;
        }
        .cta-section>* {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all var(--transition);
            border: 2px solid transparent;
            background: var(--accent);
            color: var(--primary);
        }
        .btn:hover {
            background: var(--accent-hover);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201, 169, 110, 0.25);
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        .btn-outline {
            background: transparent;
            border-color: var(--accent);
            color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: var(--primary);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-lg {
            padding: 16px 40px;
            font-size: 1.1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            border-top: 1px solid var(--border);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            margin-bottom: 16px;
            color: var(--text-light);
            font-family: var(--font-base);
            font-weight: 600;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-col a i {
            width: 20px;
            color: var(--accent-dim);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .footer-bottom .tech {
            color: rgba(255, 255, 255, 0.2);
        }

        /* ===== 结构化数据（隐藏） ===== */
        .json-ld {
            display: none;
        }

        /* ===== 响应式 ===== */

        /* 1024px */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .intro-grid {
                gap: 32px;
            }
            .tips-list {
                grid-template-columns: 1fr;
            }
        }

        /* 768px */
        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .category-banner {
                min-height: 240px;
                padding: 40px 20px;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .banner-content p {
                font-size: 0.95rem;
            }

            .header-inner {
                height: auto;
                padding: 12px 16px;
                flex-wrap: wrap;
            }
            .nav-toggle {
                display: block;
            }
            .nav-tabs {
                width: 100%;
                margin-top: 12px;
                display: none;
                flex-direction: column;
                background: var(--bg-dark);
                border-radius: var(--radius);
                padding: 6px;
                gap: 2px;
            }
            .nav-tabs.open {
                display: flex;
            }
            .nav-tabs a {
                width: 100%;
                padding: 10px 16px;
                justify-content: center;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .intro-text .intro-stats {
                justify-content: center;
            }
            .intro-image {
                order: -1;
            }

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* 520px */
        @media (max-width: 520px) {
            h1 {
                font-size: 1.6rem;
            }
            h2 {
                font-size: 1.3rem;
            }
            .category-banner {
                min-height: 200px;
                padding: 30px 16px;
            }
            .banner-content h1 {
                font-size: 1.4rem;
            }
            .banner-content p {
                font-size: 0.88rem;
            }
            .banner-tags .tag {
                font-size: 0.75rem;
                padding: 2px 12px;
            }

            .guide-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .process-step {
                padding: 24px 16px 20px;
            }

            .intro-text .intro-stats {
                flex-wrap: wrap;
                gap: 16px;
            }
            .intro-text .stat-item .num {
                font-size: 1.5rem;
            }

            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }

            .btn {
                padding: 10px 24px;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 30px;
                font-size: 1rem;
            }

            .cta-section {
                padding: 50px 16px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }

            .footer-grid {
                gap: 20px;
            }
            .footer-col a {
                font-size: 0.85rem;
            }

            .section {
                padding: 36px 0;
            }
            .container {
                padding: 0 14px;
            }
        }

/* roulang page: article */
:root {
    --primary: #b8860b;
    --primary-dark: #8b6508;
    --primary-light: #daa520;
    --secondary: #2d2a24;
    --accent: #cd853f;
    --bg: #f5f0e8;
    --bg-card: #fefcf7;
    --bg-dark: #2d2a24;
    --bg-warm: #f0ebe3;
    --text: #2d2a24;
    --text-light: #7a7368;
    --text-inverse: #fefcf7;
    --border: #d4cdc0;
    --border-light: #e8e2d8;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(45,42,36,0.08);
    --shadow-hover: 0 12px 40px rgba(45,42,36,0.15);
    --shadow-inner: inset 0 2px 6px rgba(45,42,36,0.04);
    --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
    --font: 'Georgia','Times New Roman',serif;
    --font-ui: 'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
    --max-width: 1200px;
    --header-h: 64px;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{font-family:var(--font-ui);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4,h5{font-family:var(--font);font-weight:700;line-height:1.3;color:var(--secondary)}
h1{font-size:clamp(1.6rem,4vw,2.4rem)}
h2{font-size:clamp(1.3rem,3vw,1.9rem)}
h3{font-size:clamp(1.1rem,2.5vw,1.4rem)}
p{margin-bottom:1rem}
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 20px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border:none;border-radius:var(--radius-sm);font-family:var(--font-ui);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(184,134,11,0.3)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(184,134,11,0.4);color:#fff}
.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:0.85rem}

/* Header & Nav */
.site-header{position:sticky;top:0;z-index:100;background:rgba(245,240,232,0.92);backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light)}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:10px 0;flex-wrap:wrap;gap:10px}
.logo{font-family:var(--font);font-size:1.5rem;font-weight:700;color:var(--secondary);display:flex;align-items:baseline;gap:4px}
.logo span{color:var(--primary);font-size:1.4em}
.logo small{font-size:0.6rem;color:var(--text-light);font-weight:400;display:block;line-height:1.2}
.header-actions{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;background:#fff;border:1px solid var(--border);border-radius:40px;padding:4px 4px 4px 16px;transition:var(--transition)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(184,134,11,0.12)}
.search-box input{border:none;background:transparent;padding:8px 0;font-size:0.9rem;color:var(--text);outline:none;width:140px;font-family:var(--font-ui)}
.search-box input::placeholder{color:var(--text-light)}
.search-box button{background:var(--primary);border:none;color:#fff;width:36px;height:36px;border-radius:50%;cursor:pointer;transition:var(--transition);display:flex;align-items:center;justify-content:center}
.search-box button:hover{background:var(--primary-dark)}
.nav-tabs{display:flex;gap:4px;padding:8px 0 0;overflow-x:auto;scrollbar-width:none;flex-wrap:nowrap}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tabs a{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm) var(--radius-sm) 0 0;font-size:0.9rem;font-weight:500;color:var(--text-light);white-space:nowrap;transition:var(--transition);border:1px solid transparent;border-bottom:none;text-decoration:none}
.nav-tabs a:hover{color:var(--primary);background:rgba(184,134,11,0.06)}
.nav-tabs a.active,.nav-tabs a[aria-current="page"]{color:var(--primary);background:#fff;border-color:var(--border-light);font-weight:600;box-shadow:0 -2px 8px rgba(45,42,36,0.04)}
.mobile-toggle{display:none;background:none;border:2px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;cursor:pointer;color:var(--secondary);font-size:1.2rem;transition:var(--transition)}
.mobile-toggle:hover{border-color:var(--primary);color:var(--primary)}

/* Breadcrumb */
.breadcrumb{padding:20px 0 0;font-size:0.85rem;color:var(--text-light)}
.breadcrumb a{color:var(--text-light)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{margin:0 10px;color:var(--border)}

/* Article Main */
.article-main{padding:30px 0 60px}
.article-container{max-width:860px;margin:0 auto}
.article-header{margin-bottom:32px;padding-bottom:24px;border-bottom:2px solid var(--border-light)}
.article-meta{display:flex;flex-wrap:wrap;gap:12px 24px;margin:12px 0 16px;font-size:0.85rem;color:var(--text-light)}
.article-meta .badge{background:var(--primary);color:#fff;padding:2px 14px;border-radius:40px;font-size:0.75rem;font-weight:600}
.article-meta .date i{margin-right:4px}
.article-body{font-family:var(--font);font-size:1.05rem;line-height:1.9;color:var(--text)}
.article-body p{margin-bottom:1.4rem}
.article-body h2,.article-body h3{margin-top:2rem;margin-bottom:0.8rem;padding-top:0.4rem}
.article-body ul,.article-body ol{padding-left:1.6rem;margin-bottom:1.4rem}
.article-body li{margin-bottom:0.4rem}
.article-body img{border-radius:var(--radius);margin:2rem auto;box-shadow:var(--shadow)}
.article-body blockquote{border-left:4px solid var(--primary);padding:16px 24px;margin:1.6rem 0;background:var(--bg-warm);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-style:italic;color:var(--text-light)}
.article-body a{text-decoration:underline;text-underline-offset:2px}
.article-body a:hover{text-decoration:none}
.article-footer{margin-top:40px;padding-top:24px;border-top:2px solid var(--border-light);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.article-tags .tag{background:var(--bg-warm);padding:4px 14px;border-radius:40px;font-size:0.8rem;color:var(--text-light);border:1px solid var(--border-light)}
.article-nav{display:flex;gap:12px}
.article-nav a{font-size:0.9rem;color:var(--text-light)}
.article-nav a:hover{color:var(--primary)}

/* Not Found */
.not-found{text-align:center;padding:80px 20px}
.not-found i{font-size:3rem;color:var(--border);margin-bottom:20px}
.not-found h2{color:var(--text-light);margin-bottom:16px}
.not-found .btn{margin-top:12px}

/* Related Section */
.related-section{padding:40px 0 60px;background:var(--bg-warm)}
.related-section h2{text-align:center;margin-bottom:32px;position:relative}
.related-section h2::after{content:'';display:block;width:60px;height:3px;background:var(--primary);margin:12px auto 0;border-radius:4px}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.related-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius);padding:20px;transition:var(--transition);box-shadow:var(--shadow-inner)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:var(--primary-light)}
.related-card h3{font-size:1rem;margin-bottom:8px}
.related-card h3 a{color:var(--secondary)}
.related-card h3 a:hover{color:var(--primary)}
.related-card p{font-size:0.85rem;color:var(--text-light);margin-bottom:8px}
.related-card .meta{font-size:0.75rem;color:var(--text-light)}
.related-card .meta i{margin-right:4px}

/* Footer */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .logo{color:var(--text-inverse);margin-bottom:16px}
.footer-brand p{font-size:0.9rem;line-height:1.7;color:rgba(255,255,255,0.55);max-width:320px}
.footer-col h4{color:#fff;font-family:var(--font-ui);font-size:1rem;font-weight:600;margin-bottom:16px;letter-spacing:0.5px}
.footer-col a{display:flex;align-items:center;gap:6px;color:rgba(255,255,255,0.55);font-size:0.9rem;padding:4px 0;transition:var(--transition)}
.footer-col a:hover{color:var(--primary-light);padding-left:4px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding-top:24px;border-top:1px solid rgba(255,255,255,0.08);font-size:0.8rem;color:rgba(255,255,255,0.35)}
.footer-bottom .tech{font-family:var(--font-ui);letter-spacing:0.3px}

/* Responsive */
@media(max-width:1024px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
    .footer-brand{grid-column:1/-1}
}
@media(max-width:768px){
    .header-top{gap:8px}
    .search-box input{width:100px}
    .mobile-toggle{display:block}
    .nav-tabs{display:none;flex-direction:column;gap:0;padding:8px 0 12px;width:100%}
    .nav-tabs.open{display:flex}
    .nav-tabs a{padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--border-light);background:var(--bg-card);margin-bottom:4px}
    .nav-tabs a.active{background:var(--primary);color:#fff;border-color:var(--primary)}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column;text-align:center}
    .article-meta{flex-wrap:wrap;gap:8px}
    .article-footer{flex-direction:column;align-items:flex-start}
}
@media(max-width:520px){
    :root{--header-h:56px}
    .container{padding:0 14px}
    .logo{font-size:1.2rem}
    .logo small{font-size:0.5rem}
    .search-box input{width:80px;font-size:0.8rem}
    .search-box button{width:32px;height:32px}
    .header-actions{gap:8px}
    .related-grid{grid-template-columns:1fr}
    .article-body{font-size:0.98rem}
}