/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --color-primary: #8B6F47;
        --color-primary-light: #C4956A;
        --color-primary-dark: #5C4A32;
        --color-secondary: #A8896C;
        --color-bg: #F5F0E8;
        --color-bg-alt: #EDE6DC;
        --color-bg-card: #FAF7F2;
        --color-bg-dark: #2C2420;
        --color-bg-dark-alt: #3D322C;
        --color-text: #3D322C;
        --color-text-light: #8A7E75;
        --color-text-lighter: #B0A59A;
        --color-text-inverse: #F5F0E8;
        --color-border: #D4C9BD;
        --color-border-light: #E8E0D6;
        --color-accent: #C4956A;
        --color-accent-hover: #B88355;
        --color-success: #7A9E6D;
        --color-tag-bg: #EDE6DC;
        --font-primary: 'Georgia', 'Times New Roman', serif;
        --font-secondary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        --radius: 4px;
        --radius-lg: 8px;
        --radius-xl: 12px;
        --shadow: 0 2px 8px rgba(44, 36, 32, 0.08);
        --shadow-lg: 0 4px 20px rgba(44, 36, 32, 0.12);
        --shadow-xl: 0 8px 32px rgba(44, 36, 32, 0.16);
        --spacing-xs: 0.375rem;
        --spacing-sm: 0.75rem;
        --spacing: 1.25rem;
        --spacing-md: 2rem;
        --spacing-lg: 3rem;
        --spacing-xl: 5rem;
        --transition: 0.3s ease;
        --transition-slow: 0.5s ease;
        --max-width: 1200px;
        --header-height: 72px;
    }

    /* ===== 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-secondary);
        font-size: 1rem;
        line-height: 1.7;
        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-primary); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--color-primary-dark); }
    a:focus-visible { outline: 2px solid var(--color-primary-light); outline-offset: 2px; }
    button, input, textarea, select { font-family: inherit; font-size: inherit; }
    button { cursor: pointer; border: none; background: none; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { font-family: var(--font-primary); font-weight: 700; line-height: 1.3; color: var(--color-text); }
    h1 { font-size: 2.75rem; }
    h2 { font-size: 2.125rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.25rem; }
    p { margin-bottom: 1rem; }
    p:last-child { margin-bottom: 0; }

    /* ===== Container ===== */
    .container {
        width: 100%;
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 var(--spacing-md);
    }

    /* ===== Utility ===== */
    .text-center { text-align: center; }
    .text-muted { color: var(--color-text-light); }
    .section-title {
        font-size: 2rem;
        margin-bottom: 0.5rem;
        position: relative;
        display: inline-block;
    }
    .section-title::after {
        content: '';
        display: block;
        width: 60px;
        height: 3px;
        background: var(--color-primary-light);
        margin: 0.75rem auto 0;
        border-radius: 2px;
    }
    .section-title.text-center::after { margin-left: auto; margin-right: auto; }
    .section-subtitle {
        font-size: 1.05rem;
        color: var(--color-text-light);
        max-width: 620px;
        margin: 0.5rem auto 0;
    }
    .btn {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        padding: 0.7rem 1.75rem;
        font-family: var(--font-secondary);
        font-weight: 500;
        font-size: 0.95rem;
        border-radius: var(--radius);
        border: 2px solid transparent;
        transition: all var(--transition);
        text-decoration: none;
        line-height: 1.4;
    }
    .btn-primary {
        background: var(--color-primary);
        color: var(--color-text-inverse);
        border-color: var(--color-primary);
    }
    .btn-primary:hover {
        background: var(--color-primary-dark);
        border-color: var(--color-primary-dark);
        color: var(--color-text-inverse);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
    .btn-outline {
        background: transparent;
        color: var(--color-primary);
        border-color: var(--color-primary);
    }
    .btn-outline:hover {
        background: var(--color-primary);
        color: var(--color-text-inverse);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
    .btn-light {
        background: var(--color-text-inverse);
        color: var(--color-primary-dark);
        border-color: var(--color-text-inverse);
    }
    .btn-light:hover {
        background: var(--color-bg-alt);
        border-color: var(--color-bg-alt);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
    .btn-sm { padding: 0.45rem 1.2rem; font-size: 0.85rem; }
    .btn-lg { padding: 0.9rem 2.25rem; font-size: 1.05rem; }

    /* ===== Header & Nav ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        background: rgba(245, 240, 232, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--color-border-light);
        height: var(--header-height);
        transition: box-shadow var(--transition);
    }
    .site-header.scrolled { box-shadow: var(--shadow); }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: var(--header-height);
        max-width: var(--max-width);
        margin: 0 auto;
        padding: 0 var(--spacing-md);
        position: relative;
    }
    .nav-left, .nav-right {
        display: flex;
        align-items: center;
        gap: 0.25rem;
        flex: 1;
    }
    .nav-left { justify-content: flex-start; }
    .nav-right { justify-content: flex-end; }
    .nav-link {
        display: inline-block;
        padding: 0.4rem 0.9rem;
        font-size: 0.9rem;
        font-weight: 500;
        color: var(--color-text-light);
        border-radius: var(--radius);
        transition: all var(--transition);
        position: relative;
        letter-spacing: 0.02em;
    }
    .nav-link:hover { color: var(--color-primary); background: rgba(139, 111, 71, 0.08); }
    .nav-link.active { color: var(--color-primary); background: rgba(139, 111, 71, 0.12); }
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%) scaleX(0);
        width: 60%;
        height: 2px;
        background: var(--color-primary-light);
        border-radius: 1px;
        transition: transform var(--transition);
    }
    .nav-link:hover::after, .nav-link.active::after { transform: translateX(-50%) scaleX(1); }

    /* Logo 居中 */
    .logo-wrapper {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 2;
    }
    .logo {
        font-family: var(--font-primary);
        font-size: 1.35rem;
        font-weight: 700;
        color: var(--color-primary-dark);
        letter-spacing: 0.04em;
        text-decoration: none;
        white-space: nowrap;
        padding: 0.25rem 1rem;
        border: 2px solid var(--color-primary-light);
        border-radius: var(--radius);
        background: rgba(255,255,255,0.3);
        transition: all var(--transition);
    }
    .logo:hover {
        background: var(--color-primary);
        color: var(--color-text-inverse);
        border-color: var(--color-primary);
    }

    /* 移动端汉堡 */
    .hamburger {
        display: none;
        flex-direction: column;
        justify-content: center;
        gap: 5px;
        width: 36px;
        height: 36px;
        padding: 6px;
        border-radius: var(--radius);
        cursor: pointer;
        transition: background var(--transition);
        z-index: 10;
    }
    .hamburger:hover { background: rgba(139, 111, 71, 0.1); }
    .hamburger span {
        display: block;
        height: 2px;
        background: var(--color-text);
        border-radius: 2px;
        transition: all var(--transition);
        transform-origin: center;
    }
    .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: 92vh;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        padding: calc(var(--header-height) + 2rem) var(--spacing-md) 3rem;
        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: 0.35;
        filter: saturate(0.7) brightness(0.8);
    }
    .hero-overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(44,36,32,0.85) 0%, rgba(44,36,32,0.55) 50%, rgba(44,36,32,0.85) 100%);
    }
    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 780px;
        animation: heroFadeIn 1s ease forwards;
    }
    @keyframes heroFadeIn {
        0% { opacity: 0; transform: translateY(24px); }
        100% { opacity: 1; transform: translateY(0); }
    }
    .hero-badge {
        display: inline-block;
        padding: 0.3rem 1.2rem;
        font-size: 0.8rem;
        font-weight: 500;
        letter-spacing: 0.1em;
        color: var(--color-text-inverse);
        border: 1px solid rgba(196, 149, 106, 0.4);
        border-radius: 20px;
        background: rgba(196, 149, 106, 0.15);
        margin-bottom: 1.25rem;
        text-transform: uppercase;
    }
    .hero-title {
        font-size: 3.25rem;
        font-weight: 700;
        color: var(--color-text-inverse);
        line-height: 1.2;
        margin-bottom: 1rem;
        letter-spacing: 0.02em;
    }
    .hero-title span { color: var(--color-primary-light); }
    .hero-desc {
        font-size: 1.15rem;
        color: rgba(245, 240, 232, 0.8);
        max-width: 580px;
        margin: 0 auto 2rem;
        line-height: 1.7;
    }
    .hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
    .hero .btn { border-radius: var(--radius-lg); }

    /* ===== Section Spacing ===== */
    .section { padding: var(--spacing-xl) 0; }
    .section-alt { background: var(--color-bg-alt); }
    .section-dark { background: var(--color-bg-dark); color: var(--color-text-inverse); }
    .section-dark .section-title { color: var(--color-text-inverse); }
    .section-dark .section-title::after { background: var(--color-primary-light); }
    .section-dark .section-subtitle { color: rgba(245,240,232,0.7); }

    /* ===== 平台简介 ===== */
    .intro-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
        align-items: center;
    }
    .intro-image {
        border-radius: var(--radius-xl);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        border: 2px solid var(--color-border-light);
    }
    .intro-image img { width: 100%; height: 400px; object-fit: cover; display: block; }
    .intro-text h3 { margin-bottom: 1rem; font-size: 1.75rem; }
    .intro-text p { color: var(--color-text-light); margin-bottom: 1.25rem; }
    .intro-features {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
        margin-top: 1.5rem;
    }
    .intro-feature-item {
        display: flex;
        align-items: center;
        gap: 0.6rem;
        padding: 0.5rem 0.75rem;
        background: var(--color-bg-card);
        border-radius: var(--radius);
        border: 1px solid var(--color-border-light);
        font-size: 0.9rem;
        color: var(--color-text);
    }
    .intro-feature-item i { color: var(--color-primary-light); font-size: 1rem; width: 1.2rem; text-align: center; }

    /* ===== 分类卡片 ===== */
    .category-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    .category-card {
        background: var(--color-bg-card);
        border-radius: var(--radius-xl);
        overflow: hidden;
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
        box-shadow: var(--shadow);
    }
    .category-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-xl);
        border-color: var(--color-primary-light);
    }
    .category-card-img {
        height: 200px;
        overflow: hidden;
        position: relative;
    }
    .category-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
    .category-card:hover .category-card-img img { transform: scale(1.05); }
    .category-card-body { padding: 1.5rem; }
    .category-card-body h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
    .category-card-body p { font-size: 0.9rem; color: var(--color-text-light); margin-bottom: 1rem; line-height: 1.6; }
    .category-card-body .btn { margin-top: 0.25rem; }

    /* ===== 最新资讯 (CMS) ===== */
    .posts-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
    }
    .post-card {
        background: var(--color-bg-card);
        border-radius: var(--radius-xl);
        overflow: hidden;
        border: 1px solid var(--color-border-light);
        transition: all var(--transition);
        box-shadow: var(--shadow);
        display: flex;
        flex-direction: column;
    }
    .post-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        border-color: var(--color-primary-light);
    }
    .post-card-img {
        height: 200px;
        overflow: hidden;
        position: relative;
    }
    .post-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
    .post-card:hover .post-card-img img { transform: scale(1.04); }
    .post-card-tag {
        position: absolute;
        top: 0.75rem;
        left: 0.75rem;
        padding: 0.2rem 0.75rem;
        font-size: 0.75rem;
        font-weight: 600;
        color: var(--color-text-inverse);
        background: var(--color-primary);
        border-radius: 20px;
        letter-spacing: 0.03em;
    }
    .post-card-body { padding: 1.25rem 1.5rem 1.5rem; flex: 1; display: flex; flex-direction: column; }
    .post-card-meta {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        font-size: 0.8rem;
        color: var(--color-text-lighter);
        margin-bottom: 0.5rem;
    }
    .post-card-meta i { font-size: 0.75rem; }
    .post-card-body h3 { font-size: 1.1rem; margin-bottom: 0.5rem; line-height: 1.4; }
    .post-card-body h3 a { color: var(--color-text); }
    .post-card-body h3 a:hover { color: var(--color-primary); }
    .post-card-body p { font-size: 0.9rem; color: var(--color-text-light); flex: 1; line-height: 1.6; }
    .post-card-body .read-more {
        margin-top: 0.75rem;
        font-size: 0.85rem;
        font-weight: 500;
        color: var(--color-primary);
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
    }
    .post-card-body .read-more:hover { color: var(--color-primary-dark); gap: 0.6rem; }

    .posts-empty {
        grid-column: 1 / -1;
        text-align: center;
        padding: 3rem 1.5rem;
        color: var(--color-text-light);
        background: var(--color-bg-card);
        border-radius: var(--radius-xl);
        border: 1px dashed var(--color-border);
        font-size: 1rem;
    }
    .posts-empty i { font-size: 2rem; color: var(--color-text-lighter); margin-bottom: 0.75rem; display: block; }

    /* ===== 服务流程 ===== */
    .process-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-md);
        margin-top: var(--spacing-md);
        counter-reset: step;
    }
    .process-step {
        text-align: center;
        padding: var(--spacing-md) var(--spacing);
        background: var(--color-bg-card);
        border-radius: var(--radius-xl);
        border: 1px solid var(--color-border-light);
        position: relative;
        transition: all var(--transition);
        box-shadow: var(--shadow);
    }
    .process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
    .process-step::before {
        counter-increment: step;
        content: counter(step);
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        margin: 0 auto 1rem;
        border-radius: 50%;
        background: var(--color-primary);
        color: var(--color-text-inverse);
        font-family: var(--font-primary);
        font-size: 1.25rem;
        font-weight: 700;
        border: 3px solid var(--color-primary-light);
    }
    .process-step h4 { font-size: 1.1rem; margin-bottom: 0.5rem; }
    .process-step p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.6; }
    .process-connector {
        display: none;
    }

    /* ===== 数据统计 ===== */
    .stats-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-md);
    }
    .stat-item {
        text-align: center;
        padding: var(--spacing-md) var(--spacing);
        background: rgba(255,255,255,0.05);
        border-radius: var(--radius-xl);
        border: 1px solid rgba(196,149,106,0.2);
        transition: all var(--transition);
    }
    .stat-item:hover { background: rgba(255,255,255,0.08); border-color: rgba(196,149,106,0.4); }
    .stat-number {
        font-family: var(--font-primary);
        font-size: 2.75rem;
        font-weight: 700;
        color: var(--color-primary-light);
        line-height: 1.2;
        margin-bottom: 0.25rem;
    }
    .stat-label { font-size: 0.9rem; color: rgba(245,240,232,0.7); }

    /* ===== FAQ ===== */
    .faq-list {
        max-width: 780px;
        margin: var(--spacing-md) auto 0;
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
    }
    .faq-item {
        background: var(--color-bg-card);
        border-radius: var(--radius-lg);
        border: 1px solid var(--color-border-light);
        overflow: hidden;
        transition: all var(--transition);
    }
    .faq-item:hover { border-color: var(--color-primary-light); }
    .faq-question {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.1rem 1.5rem;
        font-weight: 600;
        font-size: 0.98rem;
        color: var(--color-text);
        cursor: pointer;
        transition: background var(--transition);
        gap: 0.75rem;
    }
    .faq-question:hover { background: rgba(139,111,71,0.04); }
    .faq-question i { color: var(--color-primary-light); 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 var(--transition), padding var(--transition);
        padding: 0 1.5rem;
        color: var(--color-text-light);
        font-size: 0.92rem;
        line-height: 1.7;
    }
    .faq-item.active .faq-answer {
        max-height: 300px;
        padding: 0 1.5rem 1.2rem;
    }

    /* ===== CTA ===== */
    .cta-section {
        text-align: center;
        padding: var(--spacing-xl) var(--spacing-md);
        background: var(--color-bg-dark);
        position: relative;
        overflow: hidden;
    }
    .cta-section::before {
        content: '';
        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; max-width: 640px; margin: 0 auto; }
    .cta-content h2 { color: var(--color-text-inverse); font-size: 2.25rem; margin-bottom: 0.75rem; }
    .cta-content p { color: rgba(245,240,232,0.75); font-size: 1.05rem; margin-bottom: 1.75rem; }
    .cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

    /* ===== Footer ===== */
    .site-footer {
        background: var(--color-bg-dark-alt);
        color: rgba(245,240,232,0.7);
        padding: var(--spacing-lg) 0 var(--spacing-md);
        border-top: 2px solid rgba(196,149,106,0.15);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    .footer-brand .logo {
        display: inline-block;
        margin-bottom: 0.75rem;
        font-size: 1.1rem;
        padding: 0.2rem 0.9rem;
        border-color: rgba(196,149,106,0.3);
        color: var(--color-text-inverse);
        background: transparent;
    }
    .footer-brand .logo:hover { background: var(--color-primary); border-color: var(--color-primary); }
    .footer-brand p { font-size: 0.88rem; line-height: 1.7; max-width: 300px; }
    .footer-col h4 {
        font-family: var(--font-secondary);
        font-size: 0.9rem;
        font-weight: 600;
        color: var(--color-text-inverse);
        margin-bottom: 0.75rem;
        letter-spacing: 0.05em;
        text-transform: uppercase;
    }
    .footer-col ul li { margin-bottom: 0.4rem; }
    .footer-col ul li a {
        font-size: 0.88rem;
        color: rgba(245,240,232,0.6);
        transition: all var(--transition);
        display: inline-flex;
        align-items: center;
        gap: 0.3rem;
    }
    .footer-col ul li a:hover { color: var(--color-primary-light); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid rgba(196,149,106,0.1);
        padding-top: var(--spacing);
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        font-size: 0.82rem;
        color: rgba(245,240,232,0.5);
    }
    .footer-bottom a { color: rgba(245,240,232,0.5); }
    .footer-bottom a:hover { color: var(--color-primary-light); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .intro-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
        .intro-image img { height: 300px; }
        .process-grid { grid-template-columns: repeat(2, 1fr); }
        .stats-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .hero-title { font-size: 2.75rem; }
    }

    @media (max-width: 768px) {
        :root { --header-height: 64px; --spacing-xl: 3rem; --spacing-lg: 2rem; --spacing-md: 1.5rem; }
        h1 { font-size: 2rem; }
        h2 { font-size: 1.7rem; }
        .section-title { font-size: 1.6rem; }

        /* 导航移动端 */
        .nav-left, .nav-right { display: none; }
        .hamburger { display: flex; }
        .mobile-nav-open .nav-left,
        .mobile-nav-open .nav-right {
            display: flex;
            flex-direction: column;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            background: rgba(245, 240, 232, 0.98);
            backdrop-filter: blur(12px);
            padding: var(--spacing) var(--spacing-md);
            box-shadow: var(--shadow-lg);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            gap: 0.25rem;
            flex: none;
            align-items: stretch;
        }
        .mobile-nav-open .nav-left { top: var(--header-height); }
        .mobile-nav-open .nav-right { top: calc(var(--header-height) + 180px); }
        .mobile-nav-open .nav-link {
            padding: 0.6rem 0.75rem;
            font-size: 1rem;
            border-radius: var(--radius);
        }
        .mobile-nav-open .nav-link::after { display: none; }
        .logo-wrapper { position: static; transform: none; }
        .header-inner { justify-content: space-between; }
        .logo { font-size: 1.1rem; padding: 0.2rem 0.75rem; }

        .hero { min-height: 70vh; padding-top: calc(var(--header-height) + 1.5rem); }
        .hero-title { font-size: 2.2rem; }
        .hero-desc { font-size: 1rem; }

        .category-grid { grid-template-columns: 1fr; }
        .posts-grid { grid-template-columns: 1fr; }
        .process-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-sm); }
        .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-sm); }
        .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
        .footer-bottom { flex-direction: column; text-align: center; }

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

    @media (max-width: 520px) {
        .hero-title { font-size: 1.75rem; }
        .hero-actions { flex-direction: column; align-items: center; }
        .hero .btn { width: 100%; max-width: 280px; justify-content: center; }
        .process-grid { grid-template-columns: 1fr; }
        .stats-grid { grid-template-columns: 1fr; }
        .cta-actions { flex-direction: column; align-items: center; }
        .cta-actions .btn { width: 100%; max-width: 280px; justify-content: center; }
        .post-card-img { height: 180px; }
        .category-card-img { height: 180px; }
    }

    /* ===== 滚动条美化 ===== */
    ::-webkit-scrollbar { width: 6px; }
    ::-webkit-scrollbar-track { background: var(--color-bg-alt); }
    ::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
    ::-webkit-scrollbar-thumb:hover { background: var(--color-primary-light); }

    /* ===== 复古装饰线 ===== */
    .divider-line {
        width: 80px;
        height: 2px;
        background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
        margin: 0.5rem auto 1rem;
    }
    .divider-double {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 0.75rem;
        margin: 1rem 0;
    }
    .divider-double::before,
    .divider-double::after {
        content: '';
        flex: 1;
        max-width: 80px;
        height: 1px;
        background: var(--color-border);
    }
    .divider-double i { color: var(--color-primary-light); font-size: 0.75rem; }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #b8860b;
            --primary-dark: #9a7209;
            --primary-light: #d4a843;
            --primary-bg: #fdf8ef;
            --secondary: #2c1810;
            --accent: #c1440e;
            --bg: #faf6f0;
            --bg-card: #ffffff;
            --bg-dark: #1e130f;
            --text: #2c1810;
            --text-light: #6b5a4a;
            --text-muted: #9b8a7a;
            --border: #e8ddd0;
            --border-light: #f0e8dc;
            --shadow: 0 4px 20px rgba(44, 24, 16, 0.08);
            --shadow-hover: 0 8px 32px rgba(44, 24, 16, 0.15);
            --radius: 12px;
            --radius-sm: 6px;
            --radius-lg: 20px;
            --font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-h: 72px;
        }

        /* ===== 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);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

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

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(250, 246, 240, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 12px rgba(44, 24, 16, 0.04);
            height: var(--header-h);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 24px rgba(44, 24, 16, 0.08);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
        }

        .nav-right {
            justify-content: flex-end;
        }

        .nav-link {
            padding: 6px 18px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-light);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.02em;
        }
        .nav-link:hover {
            color: var(--primary-dark);
            background: rgba(184, 134, 11, 0.06);
        }
        .nav-link.active {
            color: var(--primary-dark);
            background: rgba(184, 134, 11, 0.10);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 18px;
            right: 18px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .logo-wrapper {
            flex-shrink: 0;
            padding: 0 20px;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: 0.06em;
            text-decoration: none;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--secondary), var(--primary-dark));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            transition: var(--transition);
        }
        .logo:hover {
            opacity: 0.85;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            z-index: 1001;
        }
        .hamburger:hover {
            background: rgba(184, 134, 11, 0.08);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(250, 246, 240, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 32px 24px;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
            overflow-y: auto;
            opacity: 0;
            transform: translateY(-12px);
            transition: var(--transition);
            pointer-events: none;
        }
        .mobile-nav.open {
            opacity: 1;
            transform: translateY(0);
            pointer-events: all;
        }
        .mobile-nav .nav-link {
            font-size: 1.1rem;
            padding: 14px 20px;
            border-radius: var(--radius);
            border-bottom: 1px solid var(--border-light);
        }
        .mobile-nav .nav-link.active {
            background: rgba(184, 134, 11, 0.10);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            margin-top: var(--header-h);
            padding: 60px 0 40px;
            background: var(--primary-bg);
            border-bottom: 1px solid var(--border-light);
            position: relative;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--text-muted);
        }
        .article-breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .article-breadcrumb .sep {
            color: var(--border);
        }
        .article-hero h1 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text);
            max-width: 900px;
            line-height: 1.3;
            letter-spacing: 0.01em;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 20px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--primary-light);
            font-size: 0.85rem;
        }
        .article-category-badge {
            display: inline-block;
            padding: 3px 14px;
            background: rgba(184, 134, 11, 0.12);
            color: var(--primary-dark);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text);
        }
        .article-body .content p {
            margin-bottom: 1.4em;
        }
        .article-body .content img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-body .content h2,
        .article-body .content h3 {
            margin-top: 1.6em;
            margin-bottom: 0.6em;
        }
        .article-body .content h2 {
            font-size: 1.5rem;
            border-left: 4px solid var(--primary);
            padding-left: 16px;
        }
        .article-body .content h3 {
            font-size: 1.2rem;
        }
        .article-body .content ul,
        .article-body .content ol {
            margin-bottom: 1.4em;
            padding-left: 24px;
        }
        .article-body .content ul li {
            list-style: disc;
            margin-bottom: 0.4em;
        }
        .article-body .content ol li {
            list-style: decimal;
            margin-bottom: 0.4em;
        }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary-light);
            background: var(--primary-bg);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            color: var(--text-light);
            font-style: italic;
        }
        .article-body .content a {
            color: var(--primary-dark);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body .content a:hover {
            color: var(--accent);
        }
        .article-body .content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 0.95rem;
        }
        .article-body .content table th,
        .article-body .content table td {
            padding: 12px 16px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body .content table th {
            background: var(--primary-bg);
            font-weight: 600;
            color: var(--text);
        }
        .article-body .content table tr:nth-child(even) {
            background: var(--bg);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .article-not-found i {
            font-size: 3.5rem;
            color: var(--border);
            margin-bottom: 24px;
        }
        .article-not-found h2 {
            font-size: 1.8rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .article-not-found .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-block {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }
        .sidebar-block h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-bg);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-block h3 i {
            color: var(--primary);
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .sidebar-list li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.4;
        }
        .sidebar-list li a:hover {
            background: var(--primary-bg);
            color: var(--text);
        }
        .sidebar-list li a i {
            color: var(--primary-light);
            font-size: 0.8rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .sidebar-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .sidebar-tags a {
            display: inline-block;
            padding: 4px 14px;
            background: var(--primary-bg);
            border-radius: 20px;
            font-size: 0.82rem;
            color: var(--text-light);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-tags a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--secondary), var(--primary-dark));
            color: #fff;
            border: none;
        }
        .sidebar-cta h3 {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.15);
        }
        .sidebar-cta h3 i {
            color: var(--primary-light);
        }
        .sidebar-cta p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.92rem;
            margin-bottom: 18px;
        }
        .sidebar-cta .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: #fff;
            color: var(--secondary);
            border-radius: var(--radius);
            font-weight: 600;
            transition: var(--transition);
        }
        .sidebar-cta .btn-light:hover {
            background: var(--primary-light);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg);
            border-top: 1px solid var(--border-light);
        }
        .related-section .section-title {
            font-size: 1.6rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 40px;
            position: relative;
        }
        .related-section .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            height: 180px;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img img {
            transform: scale(1.05);
        }
        .related-card .card-body {
            padding: 20px 24px 24px;
        }
        .related-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a {
            color: var(--text);
        }
        .related-card .card-body h4 a:hover {
            color: var(--primary-dark);
        }
        .related-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-card .card-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .site-footer .footer-brand .logo {
            font-size: 1.3rem;
            margin-bottom: 16px;
            display: inline-block;
            background: linear-gradient(135deg, #f0e8dc, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 360px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
            flex-wrap: wrap;
            gap: 12px;
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .sidebar-block.sidebar-cta {
                grid-column: 1 / -1;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: flex;
                position: absolute;
                right: 20px;
                top: 50%;
                transform: translateY(-50%);
            }
            .mobile-nav {
                display: flex;
            }
            .logo-wrapper {
                padding: 0;
            }
            .logo {
                font-size: 1.15rem;
            }
            .article-hero {
                padding: 40px 0 28px;
            }
            .article-hero h1 {
                font-size: 1.5rem;
            }
            .article-body {
                padding: 24px;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .article-meta {
                flex-direction: column;
                gap: 10px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-hero h1 {
                font-size: 1.25rem;
            }
            .article-body {
                padding: 16px;
                border-radius: var(--radius);
            }
            .article-body .content {
                font-size: 0.92rem;
            }
            .article-body .content h2 {
                font-size: 1.15rem;
            }
            .article-body .content h3 {
                font-size: 1rem;
            }
            .related-card .card-body {
                padding: 16px 18px 18px;
            }
            .article-breadcrumb {
                font-size: 0.78rem;
            }
            .sidebar-block {
                padding: 20px;
            }
        }

        /* ===== Utility ===== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-8 {
            margin-bottom: 8px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .items-center {
            align-items: center;
        }
        .justify-between {
            justify-content: space-between;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2d4a3e;
            --primary-dark: #1e3329;
            --primary-light: #4a7a63;
            --accent: #c4883c;
            --accent-light: #d4a04c;
            --accent-dark: #a0702e;
            --bg: #f5f0e8;
            --bg-card: #faf8f4;
            --bg-dark: #2a2a2a;
            --bg-dark-alt: #363636;
            --text: #3a3a3a;
            --text-light: #7a7a7a;
            --text-dark: #1a1a1a;
            --border: #d4c8b8;
            --border-light: #e8e0d4;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius: 12px;
            --radius-sm: 6px;
            --radius-lg: 20px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-serif: 'Noto Serif SC', serif;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            --container: 1200px;
            --header-h: 76px;
        }

        /* ===== 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: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-h);
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-serif);
            color: var(--text-dark);
            line-height: 1.3;
            font-weight: 700;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-h);
            background: rgba(245, 240, 232, 0.94);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 2px solid var(--border-light);
            z-index: 1000;
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(245, 240, 232, 0.98);
            box-shadow: 0 2px 30px rgba(0, 0, 0, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            font-family: var(--font-sans);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(45, 74, 62, 0.06);
        }

        .nav-link.active {
            color: var(--accent-dark);
            background: rgba(196, 136, 60, 0.10);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .logo-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--primary-dark);
            letter-spacing: 2px;
            text-decoration: none;
            transition: color var(--transition);
            white-space: nowrap;
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .hamburger:hover {
            background: rgba(45, 74, 62, 0.06);
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: all var(--transition);
            transform-origin: center;
        }

        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

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

        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            width: 100%;
            background: var(--bg-card);
            border-bottom: 2px solid var(--border);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.10);
            padding: 16px 24px 24px;
            z-index: 999;
            transform: translateY(-10px);
            opacity: 0;
            transition: all var(--transition);
            pointer-events: none;
        }

        .mobile-nav.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 1rem;
            border-radius: var(--radius-sm);
            margin-bottom: 4px;
        }

        .mobile-nav .nav-link.active {
            background: rgba(196, 136, 60, 0.12);
        }

        /* ===== Hero / Banner ===== */
        .category-hero {
            position: relative;
            padding: 80px 0 72px;
            background: var(--primary-dark);
            color: #fff;
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }

        .category-hero .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .category-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 51, 41, 0.92) 0%, rgba(45, 74, 62, 0.70) 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .category-hero h1 {
            font-size: 3rem;
            color: #fff;
            font-weight: 900;
            letter-spacing: 4px;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
        }

        .category-hero .hero-sub {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 12px;
            font-weight: 400;
            line-height: 1.8;
        }

        .category-hero .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 22px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .hero-breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.60);
            margin-top: 20px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-breadcrumb a:hover {
            color: var(--accent-light);
        }

        .hero-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        /* ===== Section通用 ===== */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-dark {
            background: var(--bg-dark);
            color: #e8e0d4;
        }

        .section-dark h2,
        .section-dark h3 {
            color: #f5f0e8;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .section-dark .section-header h2 {
            color: #f5f0e8;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.8;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.65);
        }

        .section-header .accent-line {
            width: 60px;
            height: 3px;
            background: var(--accent);
            margin: 16px auto 0;
            border-radius: 3px;
        }

        /* ===== 指南概览 Stats ===== */
        .guide-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 16px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .stat-number {
            font-family: var(--font-serif);
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 6px;
            font-weight: 500;
        }

        .stat-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        /* ===== 指南分类卡片 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }

        .guide-card .card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

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

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

        .guide-card .card-img .img-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px 20px 16px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.60));
        }

        .guide-card .card-img .img-overlay .tag {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }

        .guide-card .card-body {
            padding: 24px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-card .card-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-dark);
        }

        .guide-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
        }

        .guide-card .card-footer {
            padding: 0 24px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .guide-card .card-footer .btn-text {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition);
        }

        .guide-card .card-footer .btn-text:hover {
            color: var(--accent);
        }

        .guide-card .card-footer .btn-text i {
            font-size: 0.75rem;
            transition: transform var(--transition);
        }

        .guide-card .card-footer .btn-text:hover i {
            transform: translateX(3px);
        }

        /* ===== 使用流程 ===== */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .flow-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }

        .flow-step {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .flow-step .step-num {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            border: 4px solid var(--bg);
            box-shadow: 0 4px 16px rgba(45, 74, 62, 0.20);
            transition: all var(--transition);
        }

        .flow-step:hover .step-num {
            background: var(--accent);
            transform: scale(1.06);
        }

        .flow-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .flow-step p {
            font-size: 0.88rem;
            color: var(--text-light);
            line-height: 1.6;
            max-width: 200px;
            margin: 0 auto;
        }

        /* ===== 热门指南列表 ===== */
        .guide-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .guide-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 18px 24px;
            transition: all var(--transition);
            cursor: default;
        }

        .guide-list-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .guide-list-item .item-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(45, 74, 62, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .guide-list-item .item-content {
            flex: 1;
        }

        .guide-list-item .item-content h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 2px;
            font-family: var(--font-sans);
        }

        .guide-list-item .item-content p {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .guide-list-item .item-arrow {
            color: var(--border);
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .guide-list-item:hover .item-arrow {
            color: var(--accent);
            transform: translateX(3px);
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: background var(--transition);
            font-family: var(--font-sans);
        }

        .faq-item .faq-q:hover {
            background: rgba(45, 74, 62, 0.03);
        }

        .faq-item .faq-q .faq-toggle {
            font-size: 0.85rem;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-q .faq-toggle {
            transform: rotate(180deg);
        }

        .faq-item .faq-a {
            padding: 0 24px 0;
            max-height: 0;
            overflow: hidden;
            transition: all 0.35s ease;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-a {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-dark);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.10;
            mix-blend-mode: overlay;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            color: #fff;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 2px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 520px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .btn {
            display: inline-block;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.5px;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
            text-decoration: none;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 20px rgba(196, 136, 60, 0.30);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(196, 136, 60, 0.40);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.40);
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent-light);
            background: rgba(196, 136, 60, 0.08);
            transform: translateY(-2px);
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: #c8c0b4;
            padding: 56px 0 0;
            border-top: 3px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand .logo {
            color: #f5f0e8;
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer-brand .logo:hover {
            color: var(--accent-light);
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.50);
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #f5f0e8;
            margin-bottom: 16px;
            font-family: var(--font-sans);
            letter-spacing: 0.5px;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 8px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.45);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 24px;
            }
            .flow-steps::before {
                display: none;
            }
            .flow-step p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .guide-stats {
                gap: 20px;
            }
            .category-hero h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 64px;
            }
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: block;
            }
            .category-hero {
                padding: 56px 0 48px;
                min-height: 260px;
            }
            .category-hero h1 {
                font-size: 1.9rem;
                letter-spacing: 2px;
            }
            .category-hero .hero-sub {
                font-size: 1rem;
            }
            .section {
                padding: 48px 0;
            }
            .section-header h2 {
                font-size: 1.7rem;
            }
            .guide-stats {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .flow-steps {
                grid-template-columns: 1fr 1fr;
                gap: 24px 16px;
            }
            .flow-step .step-num {
                width: 52px;
                height: 52px;
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .guide-list-item {
                padding: 14px 16px;
                flex-wrap: wrap;
            }
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item.open .faq-a {
                padding: 0 16px 16px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .logo {
                font-size: 1.2rem;
                letter-spacing: 1px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 1.6rem;
            }
            .category-hero .hero-sub {
                font-size: 0.92rem;
            }
            .section-header h2 {
                font-size: 1.4rem;
            }
            .guide-card .card-body {
                padding: 18px 18px 20px;
            }
            .guide-card .card-footer {
                padding: 0 18px 18px;
            }
            .flow-steps {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .flow-step {
                display: flex;
                align-items: center;
                gap: 16px;
                text-align: left;
            }
            .flow-step .step-num {
                margin: 0;
                flex-shrink: 0;
            }
            .flow-step p {
                max-width: 100%;
            }
            .guide-stats {
                grid-template-columns: 1fr;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .hero-breadcrumb {
                font-size: 0.8rem;
                flex-wrap: wrap;
            }
            .btn {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .footer-bottom {
                font-size: 0.78rem;
            }
        }

        /* ===== Fade-in animation ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Back to top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            opacity: 0;
            transform: translateY(20px);
            transition: all var(--transition);
            z-index: 100;
            border: none;
        }

        .back-top.show {
            opacity: 1;
            transform: translateY(0);
        }

        .back-top:hover {
            background: var(--accent);
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(196, 136, 60, 0.30);
        }

        @media (max-width: 768px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 0.95rem;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #b8860b;
            --primary-dark: #8b6508;
            --primary-light: #daa520;
            --primary-muted: #f5e6c8;
            --secondary: #2c1810;
            --accent: #cd853f;
            --bg-dark: #1a0f0a;
            --bg-card: #2a1a12;
            --bg-light: #fdf8f0;
            --bg-section-alt: #f5ede0;
            --text-primary: #f0e6d3;
            --text-dark: #2c1810;
            --text-muted: #a09080;
            --text-light: #f8f0e0;
            --border-color: #d4a854;
            --border-light: #e8d5b0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.15);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.25);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.35);
            --transition: all 0.3s ease;
            --font-serif: 'Georgia', 'Noto Serif SC', serif;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --header-h: 80px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-sans);
            background: var(--bg-light);
            color: var(--text-dark);
            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-dark); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-serif); line-height: 1.3; color: var(--text-dark); }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-block;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid var(--primary);
            background: transparent;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
            letter-spacing: 0.5px;
            font-family: var(--font-sans);
        }
        .btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(184,134,11,0.3);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }
        .btn-outline-light {
            border-color: var(--text-light);
            color: var(--text-light);
        }
        .btn-outline-light:hover {
            background: var(--text-light);
            color: var(--bg-dark);
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 2px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--header-h);
            box-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            color: var(--text-muted);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 6px 16px;
            border-radius: 50px;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .nav-link:hover {
            color: var(--text-light);
            background: rgba(255,255,255,0.06);
        }
        .nav-link.active {
            color: var(--primary-light);
            background: rgba(218,165,32,0.12);
            border: 1px solid rgba(218,165,32,0.2);
        }
        .logo-wrapper {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }
        .logo {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-light) !important;
            letter-spacing: 2px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.3);
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--primary) !important;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .hamburger span {
            width: 28px;
            height: 2px;
            background: var(--text-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .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); }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            background: var(--bg-dark);
            border-bottom: 2px solid var(--border-color);
            padding: 16px 24px;
            flex-direction: column;
            gap: 8px;
            z-index: 999;
            box-shadow: var(--shadow-lg);
        }
        .mobile-nav.open { display: flex; }
        .mobile-nav .nav-link {
            padding: 10px 16px;
            font-size: 1rem;
            border-radius: var(--radius-sm);
        }

        /* ===== Page Banner ===== */
        .page-banner {
            padding: 120px 0 80px;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            border-bottom: 3px solid var(--border-color);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.2;
            filter: sepia(0.4) saturate(0.6);
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 3rem;
            color: var(--text-light);
            margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.4);
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--primary-light); }
        .breadcrumb a:hover { color: var(--primary); }
        .breadcrumb span { color: var(--text-muted); }

        /* ===== Section General ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }
        .section-dark h2,
        .section-dark h3,
        .section-dark .section-subtitle {
            color: var(--text-light);
        }
        .section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 12px;
            color: var(--text-dark);
            letter-spacing: 1px;
        }
        .section-dark .section-title { color: var(--text-light); }
        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .section-icon {
            text-align: center;
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(212,168,84,0.15);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
            border-bottom: 2px solid rgba(212,168,84,0.1);
        }
        .card-body {
            padding: 24px 20px;
        }
        .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
            color: var(--text-light);
        }
        .card-body p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            background: rgba(218,165,32,0.12);
            color: var(--primary-light);
            font-size: 0.78rem;
            font-weight: 500;
            margin-bottom: 10px;
            border: 1px solid rgba(218,165,32,0.15);
        }
        .card-footer-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary-light);
            font-size: 0.9rem;
            font-weight: 500;
            margin-top: 12px;
        }
        .card-footer-link i { font-size: 0.8rem; transition: var(--transition); }
        .card-footer-link:hover i { transform: translateX(4px); }

        /* ===== Light Card (for light bg) ===== */
        .card-light {
            background: #fff;
            border: 1px solid var(--border-light);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
        }
        .card-light .card-body h3 { color: var(--text-dark); }
        .card-light .card-body p { color: #666; }
        .card-light .card-tag {
            background: var(--primary-muted);
            color: var(--primary-dark);
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255,255,255,0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(212,168,84,0.1);
            transition: var(--transition);
        }
        .stat-item:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--border-color);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--primary-light);
            font-family: var(--font-serif);
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-top: 6px;
        }

        /* ===== Process / Timeline ===== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            position: relative;
        }
        .process-step {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-md);
            border: 1px solid rgba(212,168,84,0.08);
            position: relative;
            transition: var(--transition);
        }
        .process-step:hover {
            border-color: var(--border-color);
            background: rgba(255,255,255,0.06);
        }
        .process-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px;
            font-family: var(--font-serif);
        }
        .process-step h4 {
            color: var(--text-light);
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== Feature List ===== */
        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .feature-item {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: rgba(255,255,255,0.03);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--primary);
            transition: var(--transition);
        }
        .feature-item:hover {
            background: rgba(255,255,255,0.06);
        }
        .feature-item i {
            font-size: 1.4rem;
            color: var(--primary-light);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .feature-item h4 {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .feature-item p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-color);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-sans);
            color: var(--text-dark);
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question::after {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: #555;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-dark);
            border-top: 2px solid var(--border-color);
            border-bottom: 2px solid var(--border-color);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            border-top: 2px solid var(--border-color);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(212,168,84,0.15);
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: var(--text-light);
            font-size: 1rem;
            margin-bottom: 16px;
            font-family: var(--font-sans);
            font-weight: 600;
        }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--primary-light); }
        .footer-bottom a:hover { color: var(--primary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .process-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --header-h: 70px; }
            .nav-left, .nav-right { display: none; }
            .hamburger { display: flex; }
            .logo-wrapper { position: static; transform: none; }
            .header-inner { justify-content: space-between; }
            .page-banner h1 { font-size: 2rem; }
            .page-banner { padding: 100px 0 60px; }
            .section { padding: 60px 0; }
            .section-title { font-size: 1.7rem; }
            .feature-list { grid-template-columns: 1fr; }
            .process-grid { grid-template-columns: 1fr; gap: 20px; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cta-section h2 { font-size: 1.7rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .page-banner h1 { font-size: 1.6rem; }
            .page-banner p { font-size: 0.95rem; }
            .card-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
            .stat-number { font-size: 2rem; }
            .btn { padding: 10px 24px; font-size: 0.85rem; }
            .section-title { font-size: 1.4rem; }
            .cta-buttons { flex-direction: column; align-items: center; }
        }

        /* ===== Accessibility ===== */
        a:focus-visible, button:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
        }

        /* ===== Skeleton / Utility ===== */
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mt-16 { margin-top: 16px; }
        .mb-16 { margin-bottom: 16px; }
        .gap-8 { gap: 8px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: category3 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #b8860b;
            --primary-dark: #8b6508;
            --primary-light: #e8c84a;
            --secondary: #2c1810;
            --accent: #d4a017;
            --bg-body: #f4efe6;
            --bg-card: #faf7f0;
            --bg-dark: #2c1810;
            --bg-darker: #1f110a;
            --text-primary: #2c1810;
            --text-secondary: #5a4a3a;
            --text-light: #8a7a6a;
            --text-on-dark: #f0e8d8;
            --text-muted: #b0a090;
            --border-color: #d4c8b8;
            --border-light: #e8ddd0;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(44, 24, 16, 0.08);
            --shadow-md: 0 4px 12px rgba(44, 24, 16, 0.12);
            --shadow-lg: 0 8px 30px rgba(44, 24, 16, 0.15);
            --shadow-xl: 0 16px 48px rgba(44, 24, 16, 0.2);
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 80px;
        }

        /* ========== 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);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
            background: none;
        }

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

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== 标题层级 ========== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-serif);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
        }

        h1 {
            font-size: 2.8rem;
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            h3 {
                font-size: 1.2rem;
            }
        }

        /* ========== Header / 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: var(--bg-card);
            border-bottom: 2px solid var(--border-light);
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            transition: background var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(250, 247, 240, 0.96);
            backdrop-filter: blur(12px);
            box-shadow: var(--shadow-md);
        }

        .header-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .nav-left,
        .nav-right {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-left .nav-link,
        .nav-right .nav-link {
            padding: 8px 18px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }

        .nav-left .nav-link:hover,
        .nav-right .nav-link:hover {
            color: var(--primary);
            background: rgba(184, 134, 11, 0.06);
        }

        .nav-left .nav-link.active,
        .nav-right .nav-link.active {
            color: var(--primary-dark);
            background: rgba(184, 134, 11, 0.1);
        }

        .nav-left .nav-link.active::after,
        .nav-right .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }

        .logo-wrapper {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
        }

        .logo {
            font-family: var(--font-serif);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: 2px;
            text-decoration: none;
            transition: color var(--transition);
            white-space: nowrap;
        }

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

        /* 汉堡菜单 */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            z-index: 1001;
        }

        .hamburger:hover {
            background: rgba(184, 134, 11, 0.08);
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            margin: 4px 0;
            transition: all var(--transition);
        }

        .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);
        }

        /* 移动端菜单面板 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            width: 100%;
            height: calc(100vh - var(--header-height));
            background: var(--bg-card);
            padding: 32px 24px;
            flex-direction: column;
            gap: 16px;
            overflow-y: auto;
            z-index: 999;
            border-top: 2px solid var(--border-light);
            box-shadow: var(--shadow-lg);
            opacity: 0;
            transform: translateY(-12px);
            transition: opacity 0.35s ease, transform 0.35s ease;
        }

        .mobile-menu.open {
            display: flex;
            opacity: 1;
            transform: translateY(0);
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 14px 20px;
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .mobile-menu .nav-link:hover {
            background: rgba(184, 134, 11, 0.06);
            border-color: var(--border-light);
        }

        .mobile-menu .nav-link.active {
            color: var(--primary-dark);
            background: rgba(184, 134, 11, 0.1);
            border-color: var(--primary-light);
        }

        .mobile-menu .mobile-logo {
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--secondary);
            text-align: center;
            padding: 16px 0;
            margin-bottom: 8px;
            border-bottom: 1px solid var(--border-light);
        }

        @media (max-width: 820px) {
            .nav-left,
            .nav-right {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .logo-wrapper {
                position: static;
                transform: none;
                margin: 0 auto;
            }
            .header-inner {
                justify-content: space-between;
            }
        }

        @media (min-width: 821px) {
            .mobile-menu {
                display: none !important;
            }
        }

        /* ========== Hero / Banner ========== */
        .page-hero {
            margin-top: var(--header-height);
            padding: 100px 0 80px;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(44, 24, 16, 0.88) 0%, rgba(31, 17, 10, 0.92) 100%);
        }

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

        .page-hero h1 {
            color: var(--text-on-dark);
            margin-bottom: 16px;
            font-size: 2.6rem;
            letter-spacing: 0.5px;
        }

        .page-hero .hero-subtitle {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.8;
            font-style: italic;
        }

        .page-hero .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            background: rgba(184, 134, 11, 0.2);
            border: 1px solid rgba(184, 134, 11, 0.3);
            border-radius: 50px;
            color: var(--primary-light);
            font-size: 0.85rem;
            letter-spacing: 1px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 70px 0 50px;
                min-height: 240px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title h2 {
            position: relative;
            display: inline-block;
            padding-bottom: 16px;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-title p {
            color: var(--text-secondary);
            margin-top: 12px;
            font-size: 1.05rem;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .section-bg-alt {
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-bg-dark {
            background: var(--bg-dark);
            color: var(--text-on-dark);
        }

        .section-bg-dark .section-title h2 {
            color: var(--text-on-dark);
        }

        .section-bg-dark .section-title p {
            color: var(--text-muted);
        }

        .section-bg-dark .section-title h2::after {
            background: var(--accent);
        }

        @media (max-width: 768px) {
            .section {
                padding: 50px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ========== 卡片 ========== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: var(--border-color);
        }

        .card-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin: -28px -24px 20px;
            height: 200px;
            background: var(--bg-body);
        }

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

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

        .card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .card .tag {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(184, 134, 11, 0.08);
            border: 1px solid rgba(184, 134, 11, 0.15);
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--primary-dark);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 32px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 50px;
            transition: all var(--transition);
            border: 2px solid transparent;
            letter-spacing: 0.5px;
            gap: 8px;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(184, 134, 11, 0.3);
        }

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

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(184, 134, 11, 0.2);
        }

        .btn-dark {
            background: var(--secondary);
            color: var(--text-on-dark);
            border-color: var(--secondary);
        }

        .btn-dark:hover {
            background: #3d2a1e;
            border-color: #3d2a1e;
            color: var(--text-on-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(44, 24, 16, 0.3);
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

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

        /* ========== 网格 ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }

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

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== 步骤流程 ========== */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 28px;
            max-width: 720px;
            margin: 0 auto;
        }

        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px 28px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            transition: all var(--transition);
        }

        .step-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
            transform: translateX(4px);
        }

        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-size: 1.3rem;
            font-weight: 700;
        }

        .step-content h4 {
            font-size: 1.1rem;
            margin-bottom: 4px;
        }

        .step-content p {
            color: var(--text-secondary);
            font-size: 0.92rem;
        }

        @media (max-width: 768px) {
            .step-item {
                padding: 18px 16px;
                flex-direction: column;
                gap: 12px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1.1rem;
            }
        }

        /* ========== 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-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: var(--border-color);
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background var(--transition);
            user-select: none;
        }

        .faq-question:hover {
            background: rgba(184, 134, 11, 0.04);
        }

        .faq-question .icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: transform var(--transition);
        }

        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            border-top: 0px solid var(--border-light);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 16px 24px 20px;
            border-top-width: 1px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 80px 0;
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            color: var(--text-on-dark);
            font-size: 2rem;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 32px;
        }

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

        @media (max-width: 768px) {
            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ========== 标签云 ========== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag-cloud .tag-item {
            padding: 8px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: default;
        }

        .tag-cloud .tag-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ========== 帮助卡片 ========== */
        .help-card {
            display: flex;
            gap: 24px;
            padding: 28px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .help-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-color);
            transform: translateY(-3px);
        }

        .help-card .icon-box {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            background: rgba(184, 134, 11, 0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
        }

        .help-card h4 {
            font-size: 1.1rem;
            margin-bottom: 4px;
        }

        .help-card p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .help-card {
                flex-direction: column;
                gap: 12px;
                padding: 20px 16px;
            }
            .help-card .icon-box {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
        }

        /* ========== 徽章 ========== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            background: rgba(184, 134, 11, 0.1);
            border: 1px solid rgba(184, 134, 11, 0.2);
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--primary-dark);
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        .badge-dark {
            background: rgba(44, 24, 16, 0.1);
            border-color: rgba(44, 24, 16, 0.15);
            color: var(--secondary);
        }

        /* ========== 分隔线 ========== */
        .divider {
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            margin: 16px auto;
        }

        .divider-light {
            background: var(--accent);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-darker);
            color: var(--text-on-dark);
            padding: 60px 0 0;
            border-top: 3px solid var(--primary);
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .logo {
            color: var(--text-on-dark);
            font-size: 1.4rem;
            display: inline-block;
            margin-bottom: 12px;
        }

        .footer-brand .logo:hover {
            color: var(--primary-light);
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 340px;
        }

        .footer-col h4 {
            color: var(--text-on-dark);
            font-size: 1rem;
            font-family: var(--font-sans);
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

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

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

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 响应式辅助 ========== */
        @media (max-width: 520px) {
            .container {
                padding: 0 12px;
            }
            .section {
                padding: 36px 0;
            }
            .page-hero {
                padding: 60px 0 40px;
                min-height: 200px;
            }
            .page-hero h1 {
                font-size: 1.5rem;
            }
        }

        /* ========== 工具类 ========== */
        .text-center {
            text-align: center;
        }
        .mt-8 {
            margin-top: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }