/* roulang page: index */
:root {
    --primary: #1e2a3a;
    --primary-dark: #141e28;
    --accent: #c9a15e;
    --accent-light: #dbb97c;
    --teal: #00b894;
    --bg: #f4f5f7;
    --card: #ffffff;
    --text: #1e2a3a;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 12px rgba(0,0,0,0.05);
    --shadow: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 264px;
    --space-section: 96px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

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

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

input {
    font-family: inherit;
}

/* ===== 布局 ===== */
.layout {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-width: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

/* ===== 侧边导航 ===== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--primary-dark) 0%, #0d141c 100%);
    color: #fff;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    padding: 40px 24px 32px;
    transition: var(--transition);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 8px;
    margin-bottom: 48px;
}

.brand-mark {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--accent) 0%, #e8c482 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    color: var(--primary-dark);
    letter-spacing: 1px;
    box-shadow: 0 4px 16px rgba(201, 161, 94, 0.35);
}

.brand-name {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(90deg, #fff 0%, #e8e0d0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.main-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 16px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link .nav-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    opacity: 0.4;
    transition: var(--transition);
    box-shadow: 0 0 0 0 rgba(201, 161, 94, 0);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    transform: translateX(4px);
}

.nav-link:hover .nav-dot {
    opacity: 0.8;
    box-shadow: 0 0 12px rgba(201, 161, 94, 0.5);
}

.nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-weight: 600;
}

.nav-link.active .nav-dot {
    opacity: 1;
    box-shadow: 0 0 12px rgba(201, 161, 94, 0.6);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    border-radius: 3px;
    background: var(--accent);
}

.sidebar-footer {
    padding: 24px 8px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-footer p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 14px;
    letter-spacing: 1px;
}

.sidebar-cta {
    display: block;
    text-align: center;
    padding: 11px 16px;
    background: linear-gradient(135deg, var(--accent) 0%, #b8914f 100%);
    color: var(--primary-dark);
    font-weight: 700;
    font-size: 14px;
    border-radius: 10px;
    transition: var(--transition);
    box-shadow: 0 4px 16px rgba(201, 161, 94, 0.3);
}

.sidebar-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(201, 161, 94, 0.4);
    color: var(--primary-dark);
}

.menu-toggle {
    display: none;
    position: fixed;
    top: 18px;
    right: 20px;
    z-index: 1001;
    width: 44px;
    height: 44px;
    background: var(--primary-dark);
    border-radius: 12px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    box-shadow: var(--shadow);
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
}

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

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

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

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20, 30, 40, 0.88) 0%, rgba(20, 30, 40, 0.6) 50%, rgba(20, 30, 40, 0.82) 100%);
}

.hero-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 32px;
    max-width: 800px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 40px;
    color: var(--accent-light);
    font-size: 14px;
    letter-spacing: 2px;
    margin-bottom: 28px;
    backdrop-filter: blur(8px);
}

.hero h1 {
    font-size: 64px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 4px;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.hero-sub {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.8;
    margin-bottom: 40px;
}

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #b8914f 100%);
    color: var(--primary-dark);
    box-shadow: 0 4px 20px rgba(201, 161, 94, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(201, 161, 94, 0.5);
    color: var(--primary-dark);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #fff;
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    transform: translateY(-3px);
}

/* ===== 板块通用 ===== */
.section {
    padding: var(--space-section) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 56px;
}

.section-tag {
    display: inline-block;
    background: rgba(201, 161, 94, 0.1);
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 18px;
    border-radius: 30px;
    margin-bottom: 16px;
    letter-spacing: 1px;
    border: 1px solid rgba(201, 161, 94, 0.2);
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 核心优势 ===== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.advantage-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 36px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: rgba(201, 161, 94, 0.2);
}

.advantage-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, rgba(201, 161, 94, 0.1) 0%, rgba(201, 161, 94, 0.05) 100%);
}

.advantage-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}

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

/* ===== 分类入口 ===== */
.category-section {
    background: var(--primary-dark);
    position: relative;
    overflow: hidden;
}

.category-section::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: rgba(201, 161, 94, 0.06);
}

.category-section .section-title {
    color: #fff;
}

.category-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.category-section .section-tag {
    background: rgba(201, 161, 94, 0.15);
    border-color: rgba(201, 161, 94, 0.3);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    position: relative;
    z-index: 2;
}

.category-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.category-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(201, 161, 94, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.category-img {
    width: 100%;
    height: 190px;
    object-fit: cover;
    transition: var(--transition);
}

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

.category-info {
    padding: 28px;
}

.category-info h3 {
    font-size: 19px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.category-info p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    margin-bottom: 18px;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent-light);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.category-link:hover {
    gap: 14px;
    color: #fff;
}

/* ===== 资讯列表 ===== */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.post-item {
    display: flex;
    align-items: center;
    gap: 24px;
    background: var(--card);
    border-radius: var(--radius);
    padding: 24px 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.post-item:hover {
    box-shadow: var(--shadow);
    transform: translateX(6px);
    border-color: rgba(201, 161, 94, 0.3);
}

.post-index {
    font-size: 22px;
    font-weight: 800;
    color: var(--accent);
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 161, 94, 0.08);
    border-radius: 14px;
    font-family: 'Georgia', serif;
}

.post-info {
    flex: 1;
    min-width: 0;
}

.post-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    background: rgba(201, 161, 94, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 6px;
}

.post-info h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-info p {
    font-size: 14px;
    color: var(--text-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.post-item time {
    font-size: 13px;
    color: var(--text-lighter);
    flex-shrink: 0;
}

.empty-tip {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-light);
    background: var(--card);
    border-radius: var(--radius);
    border: 1px dashed var(--border);
    font-size: 15px;
}

/* ===== 平台数据 ===== */
.stats-section {
    background: var(--primary);
}

.stats-section .section-title {
    color: #fff;
}

.stats-section .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 36px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
}

.stat-num {
    font-size: 44px;
    font-weight: 800;
    color: var(--accent-light);
    line-height: 1.2;
    margin-bottom: 8px;
    font-family: 'Georgia', serif;
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 1px;
}

/* ===== 使用流程 ===== */
.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 32px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent) 0%, rgba(201, 161, 94, 0.1) 100%);
    border-radius: 2px;
}

.step-item {
    text-align: center;
    padding: 0 12px;
    position: relative;
    z-index: 2;
}

.step-num {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--card);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--accent);
    margin: 0 auto 20px;
    box-shadow: 0 0 0 6px var(--bg), 0 4px 16px rgba(201, 161, 94, 0.2);
    font-family: 'Georgia', serif;
}

.step-item h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.step-item p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

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

.faq-item[open] {
    border-color: rgba(201, 161, 94, 0.3);
    box-shadow: var(--shadow-sm);
}

.faq-item summary {
    padding: 22px 28px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: var(--transition);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 26px;
    font-weight: 300;
    color: var(--accent);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: 16px;
    line-height: 1;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary:hover {
    background: rgba(201, 161, 94, 0.03);
}

.faq-item .faq-answer {
    padding: 0 28px 24px;
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1a2634 50%, var(--primary-dark) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(201, 161, 94, 0.08);
}

.cta-section::after {
    content: '';
    position: absolute;
    bottom: -150px;
    right: -100px;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: rgba(201, 161, 94, 0.05);
}

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

.cta-inner h2 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 16px;
    line-height: 1.3;
}

.cta-inner p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 36px;
}

.cta-btn {
    display: inline-block;
    padding: 16px 44px;
    background: linear-gradient(135deg, var(--accent) 0%, #b8914f 100%);
    color: var(--primary-dark);
    font-size: 16px;
    font-weight: 700;
    border-radius: 14px;
    box-shadow: 0 8px 30px rgba(201, 161, 94, 0.35);
    transition: var(--transition);
    letter-spacing: 1px;
}

.cta-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(201, 161, 94, 0.5);
    color: var(--primary-dark);
}

/* ===== 页脚 ===== */
.footer {
    background: var(--primary-dark);
    padding: 48px 0 32px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}

.footer-brand {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 2px;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
    transition: var(--transition);
}

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

.footer-copy {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 24px;
    width: 100%;
    max-width: 800px;
}

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: sticky;
        top: 0;
        flex-direction: row;
        align-items: center;
        flex-wrap: wrap;
        padding: 12px 20px;
        gap: 0;
    }

    .brand {
        margin-bottom: 0;
        margin-right: auto;
    }

    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 4px;
        padding-top: 16px;
        order: 3;
    }

    .sidebar.open .main-nav {
        display: flex;
    }

    .sidebar-footer {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .main-content {
        margin-left: 0;
    }

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

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

    .process-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 24px;
    }

    .process-steps::before {
        display: none;
    }

    .hero h1 {
        font-size: 48px;
    }
}

@media (max-width: 768px) {
    :root {
        --space-section: 64px;
    }

    .container {
        padding: 0 20px;
    }

    .section-title {
        font-size: 28px;
    }

    .post-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
    }

    .post-item time {
        margin-top: 8px;
    }

    .post-index {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
}

@media (max-width: 520px) {
    .hero {
        min-height: 90vh;
    }

    .hero-inner {
        padding: 80px 20px;
    }

    .hero h1 {
        font-size: 36px;
        letter-spacing: 2px;
    }

    .hero-sub {
        font-size: 15px;
    }

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

    .btn {
        width: 100%;
        max-width: 260px;
        text-align: center;
    }

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

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

    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .stat-num {
        font-size: 32px;
    }

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

    .step-item {
        max-width: 280px;
        margin: 0 auto;
    }

    .cta-inner h2 {
        font-size: 28px;
    }

    .cta-btn {
        width: 100%;
        max-width: 320px;
        text-align: center;
    }

    .footer-links {
        gap: 16px;
    }
}

/* roulang page: article */
:root {
            --sidebar-bg: #132b3c;
            --sidebar-text: #d9e2ec;
            --sidebar-muted: #8ea3b3;
            --primary: #c47f3c;
            --primary-hover: #d99350;
            --accent: #e3b587;
            --bg: #f7f4ee;
            --surface: #ffffff;
            --text: #263238;
            --text-weak: #6b7b84;
            --border: #e4ded4;
            --radius-xs: 6px;
            --radius-sm: 10px;
            --radius: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(20, 35, 46, 0.06);
            --shadow-md: 0 8px 24px rgba(20, 35, 46, 0.08);
            --shadow-lg: 0 20px 50px rgba(20, 35, 46, 0.14);
            --container: 1080px;
            --sidebar-w: 280px;
            --transition: 0.28s ease;
            --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button,
        input,
        textarea,
        select {
            font: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        .layout {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-w);
            height: 100vh;
            background: var(--sidebar-bg);
            color: var(--sidebar-text);
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 32px 24px;
            overflow-y: auto;
            transition: transform var(--transition);
        }
        .brand {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 4px;
        }
        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            display: inline-block;
            box-shadow: 0 0 0 4px rgba(196, 127, 60, 0.2);
        }
        .brand-sub {
            font-size: 12px;
            color: var(--sidebar-muted);
            margin-bottom: 28px;
            padding-left: 20px;
        }
        .main-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: var(--sidebar-text);
            font-size: 15px;
            font-weight: 500;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateX(4px);
        }
        .nav-link.active {
            background: linear-gradient(135deg, rgba(196, 127, 60, 0.25), rgba(196, 127, 60, 0.08));
            color: #fff;
            position: relative;
        }
        .nav-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 22%;
            height: 56%;
            width: 3px;
            border-radius: 3px;
            background: var(--primary);
        }
        .nav-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
            opacity: 0.5;
            transition: opacity var(--transition), transform var(--transition);
            flex-shrink: 0;
        }
        .nav-link.active .nav-dot {
            opacity: 1;
            transform: scale(1.4);
            background: var(--primary);
        }
        .side-note {
            margin-top: auto;
            padding-top: 24px;
            font-size: 13px;
            color: var(--sidebar-muted);
            line-height: 1.6;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .main {
            flex: 1;
            margin-left: var(--sidebar-w);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }
        .topbar {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 40px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 90;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            position: relative;
            flex-shrink: 0;
        }
        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            margin: 4px auto;
            transition: transform var(--transition), opacity var(--transition);
            border-radius: 2px;
        }
        .topbar-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-weak);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .topbar-meta {
            margin-left: auto;
            font-size: 14px;
            color: var(--text-weak);
            white-space: nowrap;
        }
        .topbar-meta a {
            color: var(--primary);
            font-weight: 600;
        }
        .content {
            flex: 1;
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 40px 40px 80px;
        }
        .section {
            margin-bottom: 48px;
        }
        .section-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }
        .section-title {
            font-size: 24px;
            font-weight: 800;
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.4;
        }
        .section-title::before {
            content: "";
            width: 6px;
            height: 24px;
            border-radius: 6px;
            background: var(--primary);
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
            margin-bottom: 24px;
        }
        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary-hover);
        }
        .article-hero {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 48px;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
            margin-bottom: 24px;
            border: 1px solid var(--border);
        }
        .article-hero::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(196, 127, 60, 0.15), transparent 70%);
            pointer-events: none;
        }
        .article-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 40px;
            background: rgba(196, 127, 60, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .article-title {
            font-size: clamp(26px, 3vw, 38px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            color: var(--text-weak);
            font-size: 14px;
            margin-top: 20px;
            position: relative;
            z-index: 1;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cover-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 24px;
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .cover-wrap img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        .cover-caption {
            position: absolute;
            left: 24px;
            bottom: 20px;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 13px;
        }
        .article-body {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .article-body p {
            margin-bottom: 20px;
            font-size: 16px;
            line-height: 1.9;
        }
        .article-body h2 {
            font-size: 22px;
            font-weight: 700;
            margin: 36px 0 16px;
            padding-left: 12px;
            border-left: 4px solid var(--primary);
        }
        .article-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 28px 0 12px;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 24px 0;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #fdf6ef;
            padding: 16px 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-weak);
        }
        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px 24px;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body a {
            color: var(--primary);
            border-bottom: 1px dashed var(--primary);
            transition: color var(--transition);
        }
        .article-body a:hover {
            color: var(--primary-hover);
        }
        .tags-box {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
            padding: 24px;
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 30px;
            background: #f1ede6;
            color: var(--text-weak);
            font-size: 13px;
            transition: all var(--transition);
        }
        .tag:hover {
            background: rgba(196, 127, 60, 0.15);
            color: var(--primary);
        }
        .article-error {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .article-error h2 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .article-error p {
            color: var(--text-weak);
            margin-bottom: 28px;
            font-size: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(196, 127, 60, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(196, 127, 60, 0.3);
        }
        .btn-light {
            background: #fff;
            color: var(--sidebar-bg);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }
        .related-cover {
            height: 160px;
            overflow: hidden;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.05);
        }
        .related-body {
            padding: 20px;
        }
        .related-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .related-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .cta-section {
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
            margin-bottom: 48px;
            border: 1px solid var(--border);
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(19, 43, 60, 0.92), rgba(19, 43, 60, 0.6));
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 660px;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: clamp(22px, 2.6vw, 32px);
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.4;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 28px;
            line-height: 1.8;
        }
        .footer {
            background: var(--sidebar-bg);
            padding: 40px;
            color: var(--sidebar-muted);
            margin-top: auto;
        }
        .footer-inner {
            max-width: var(--container);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-right: 16px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--sidebar-text);
            transition: color var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-copy {
            margin-left: auto;
            font-size: 13px;
            width: 100%;
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            color: var(--sidebar-muted);
        }
        .nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 99;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .nav-overlay.show {
            opacity: 1;
        }

        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-lg);
            }
            .nav-overlay {
                display: block;
                pointer-events: none;
            }
            .nav-overlay.show {
                pointer-events: auto;
            }
            .main {
                margin-left: 0;
            }
            .menu-toggle {
                display: block;
            }
            .topbar {
                padding: 12px 20px;
            }
            .content {
                padding: 28px 20px 60px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topbar-meta {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .article-hero {
                padding: 32px 24px;
            }
            .article-body {
                padding: 24px 20px;
            }
            .cover-wrap img {
                height: 240px;
            }
            .cta-section {
                padding: 40px 24px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
                gap: 16px;
            }
            .footer-brand {
                margin-right: 0;
            }
            .footer-copy {
                border-top: none;
                padding-top: 0;
            }
        }
        @media (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-title {
                font-size: 24px;
            }
            .breadcrumb {
                font-size: 13px;
            }
            .topbar-title {
                font-size: 13px;
            }
            .article-meta {
                flex-direction: column;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .content {
                padding: 20px 14px 50px;
            }
            .article-hero {
                border-radius: var(--radius);
                padding: 24px 18px;
            }
            .article-body {
                padding: 18px 14px;
                border-radius: var(--radius);
            }
            .article-error {
                padding: 40px 20px;
            }
            .cta-section {
                padding: 32px 18px;
                border-radius: var(--radius);
            }
            .btn {
                width: 100%;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
  :root {
    --primary: #16324b;
    --primary-light: #1e4465;
    --primary-soft: #eaf0f6;
    --accent: #d9a54a;
    --accent-light: #f0d392;
    --accent-soft: #fbf3e2;
    --bg: #f4f6f8;
    --surface: #ffffff;
    --surface-tint: #f8fafc;
    --text: #1f2937;
    --text-light: #5f6c7b;
    --text-lighter: #9aa7b4;
    --border: #e3e8ee;
    --border-light: #f0f2f5;
    --radius-lg: 20px;
    --radius: 14px;
    --radius-sm: 9px;
    --shadow-sm: 0 1px 3px rgba(15, 30, 50, 0.06);
    --shadow: 0 10px 30px rgba(15, 30, 50, 0.08);
    --shadow-lg: 0 22px 50px rgba(15, 30, 50, 0.12);
    --transition: 0.25s ease;
    --sidebar-w: 280px;
    --container-w: 1180px;
  }

  /* ===== Reset & Base ===== */
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  html {
    scroll-behavior: smooth;
  }
  body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
  }
  a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
  }
  img {
    display: block;
    max-width: 100%;
  }
  button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
  }
  input,
  textarea {
    font-family: inherit;
  }
  ul,
  ol {
    list-style: none;
  }

  /* ===== 容器 ===== */
  .container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 28px;
  }

  /* ===== 页面外壳（左侧竖向导航布局） ===== */
  .page-shell {
    display: flex;
    min-height: 100vh;
  }

  /* ===== 侧边栏 ===== */
  .sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 200;
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 34px 26px 28px;
    transition: transform 0.3s ease;
  }
  .sidebar-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 42px;
  }
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.01em;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 10px;
    display: inline-block;
    position: relative;
    flex-shrink: 0;
    box-shadow: 0 6px 14px rgba(22, 50, 75, 0.22);
  }
  .brand-mark::after {
    content: "";
    position: absolute;
    left: 9px;
    top: 9px;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border-radius: 5px 2px 5px 2px;
    transform: rotate(45deg);
  }
  .brand-text {
    white-space: nowrap;
  }

  /* 导航 */
  .main-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.96rem;
    color: var(--text-light);
    position: relative;
    border: 1px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
  }
  .nav-link .nav-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #c8d1db;
    transition: background 0.2s;
    flex-shrink: 0;
  }
  .nav-link:hover {
    background: var(--primary-soft);
    color: var(--primary);
    transform: translateX(3px);
  }
  .nav-link:hover .nav-dot {
    background: var(--accent);
  }
  .nav-link.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 8px 20px rgba(22, 50, 75, 0.22);
  }
  .nav-link.active .nav-dot {
    background: var(--accent);
  }
  .nav-link:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }

  /* 侧栏底部 */
  .sidebar-foot {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid var(--border-light);
  }
  .sidebar-badge {
    display: inline-block;
    padding: 5px 14px;
    background: var(--accent-soft);
    color: #8a691f;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.03em;
  }
  .sidebar-foot p {
    font-size: 0.82rem;
    color: var(--text-lighter);
    margin-top: 10px;
    line-height: 1.5;
  }

  /* 移动端汉堡按钮 */
  .mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--surface);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
    z-index: 220;
    transition: border-color 0.2s;
  }
  .mobile-toggle:hover {
    border-color: var(--primary-light);
  }
  .mobile-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.2s;
  }
  .mobile-toggle.active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .mobile-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .mobile-toggle.active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  /* ===== 内容区 ===== */
  .content-area {
    flex: 1;
    margin-left: var(--sidebar-w);
    min-width: 0;
  }

  /* ===== Hero 横幅 ===== */
  .page-hero {
    position: relative;
    padding: 100px 0 80px;
    color: #ffffff;
    overflow: hidden;
    background:
      linear-gradient(120deg, rgba(12, 30, 48, 0.92), rgba(25, 58, 85, 0.78)),
      url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  }
  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 78% 30%, rgba(217, 165, 74, 0.18), transparent 46%);
    pointer-events: none;
  }
  .page-hero .container {
    position: relative;
    z-index: 2;
  }
  .hero-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.08);
    padding: 7px 16px;
    border-radius: 999px;
    margin-bottom: 28px;
    backdrop-filter: blur(4px);
  }
  .hero-breadcrumb a {
    color: rgba(255, 255, 255, 0.75);
  }
  .hero-breadcrumb a:hover {
    color: var(--accent);
  }
  .hero-breadcrumb .sep {
    opacity: 0.4;
  }
  .page-hero h1 {
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 18px;
    letter-spacing: -0.01em;
  }
  .page-hero h1 .highlight {
    color: var(--accent);
  }
  .hero-desc {
    font-size: 1.08rem;
    max-width: 620px;
    color: rgba(255, 255, 255, 0.88);
    line-height: 1.75;
    margin-bottom: 36px;
  }
  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--accent);
    color: #1a2c3e;
    font-weight: 700;
    padding: 13px 28px;
    border-radius: 999px;
    border: none;
    font-size: 0.95rem;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
    box-shadow: 0 8px 22px rgba(217, 165, 74, 0.3);
  }
  .btn-primary:hover {
    background: #e6b55a;
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(217, 165, 74, 0.36);
  }
  .btn-primary:focus-visible {
    outline: 3px solid rgba(217, 165, 74, 0.5);
    outline-offset: 2px;
  }
  .btn-ghost-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    font-weight: 500;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 0.95rem;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
  }
  .btn-ghost-light:hover {
    background: rgba(255, 255, 255, 0.16);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
  }
  .btn-ghost-light:focus-visible {
    outline: 3px solid rgba(255, 255, 255, 0.25);
    outline-offset: 2px;
  }
  /* 装饰圆 */
  .hero-decoration {
    position: absolute;
    top: 0;
    right: 0;
    width: 460px;
    height: 460px;
    pointer-events: none;
    z-index: 1;
  }
  .deco-ring {
    position: absolute;
    border-radius: 50%;
    border: 1.5px dashed rgba(255, 255, 255, 0.14);
  }
  .ring-1 {
    right: -70px;
    top: -80px;
    width: 360px;
    height: 360px;
  }
  .ring-2 {
    right: 30px;
    top: 10px;
    width: 230px;
    height: 230px;
    border-color: rgba(217, 165, 74, 0.22);
  }
  .deco-dot {
    position: absolute;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 6px rgba(217, 165, 74, 0.15);
  }
  .dot-1 {
    width: 9px;
    height: 9px;
    right: 70px;
    top: 60px;
  }
  .dot-2 {
    width: 5px;
    height: 5px;
    right: 150px;
    top: 220px;
    opacity: 0.7;
  }

  /* ===== 通用板块 ===== */
  .section {
    padding: 74px 0;
  }
  .section-tint {
    background: var(--surface-tint);
  }
  .section-head {
    max-width: 720px;
    margin-bottom: 48px;
  }
  .section-tag {
    display: inline-block;
    padding: 5px 14px;
    background: var(--primary-soft);
    color: var(--primary);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
  }
  .section-head h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
  }
  .section-head p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.7;
  }

  /* ===== 入门路径（时光线/路线） ===== */
  .journey-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    position: relative;
  }
  .journey-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 22px 24px;
    position: relative;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    overflow: hidden;
  }
  .journey-item::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    height: 4px;
    width: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0.7;
  }
  .journey-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: #d5dee6;
  }
  .journey-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-soft);
    line-height: 1;
    margin-bottom: 14px;
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .journey-item h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
  }
  .journey-item p {
    font-size: 0.87rem;
    color: var(--text-light);
    line-height: 1.6;
  }
  .journey-arrow {
    position: absolute;
    top: 50%;
    right: -15px;
    width: 30px;
    height: 30px;
    background: var(--accent);
    color: #1a2c3e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    z-index: 2;
    box-shadow: 0 4px 10px rgba(217, 165, 74, 0.3);
    transform: translateY(-50%);
  }
  .journey-item:last-child .journey-arrow {
    display: none;
  }

  /* ===== 核心功能卡片 ===== */
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  .feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.25s, box-shadow 0.25s;
  }
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
  }
  .feature-card .thumb {
    height: 160px;
    overflow: hidden;
    position: relative;
  }
  .feature-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
  }
  .feature-card:hover .thumb img {
    transform: scale(1.06);
  }
  .feature-card .thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(10, 25, 40, 0.3));
  }
  .feature-body {
    padding: 22px 22px 24px;
  }
  .feature-body h3 {
    font-size: 1.08rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
  }
  .feature-body p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.6;
  }
  .feature-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 12px;
  }

  /* ===== 图文区块 ===== */
  .split-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
  }
  .split-media {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
  }
  .split-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }
  .split-block:hover .split-media img {
    transform: scale(1.03);
  }
  .split-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(200deg, rgba(22, 50, 75, 0.04), transparent 60%);
    pointer-events: none;
  }
  .split-info .section-tag {
    margin-bottom: 12px;
  }
  .split-info h2 {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    color: var(--text);
  }
  .split-info > p {
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.7;
  }
  .check-list {
    display: grid;
    gap: 12px;
  }
  .check-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text);
    padding: 12px 16px;
    background: var(--surface-tint);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
  }
  .check-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    flex-shrink: 0;
    margin-top: 2px;
  }
  .check-list li:nth-child(2) .check-icon {
    background: var(--accent);
    color: #1a2c3e;
  }
  .check-list li:nth-child(3) .check-icon {
    background: #4a8c74;
  }

  /* ===== 相关指南 ===== */
  .guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .guide-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 26px;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    position: relative;
    overflow: hidden;
  }
  .guide-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    opacity: 0.5;
    transition: opacity 0.2s;
  }
  .guide-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: #d5dee6;
  }
  .guide-card:hover::before {
    opacity: 1;
  }
  .guide-card .guide-emoji {
    width: 48px;
    height: 48px;
    background: var(--primary-soft);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    margin-bottom: 18px;
  }
  .guide-card:nth-child(2) .guide-emoji {
    background: var(--accent-soft);
  }
  .guide-card:nth-child(3) .guide-emoji {
    background: #e9f3f0;
  }
  .guide-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
  }
  .guide-card p {
    font-size: 0.88rem;
    color: var(--text-light);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 18px;
  }
  .guide-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
  }
  .guide-link:hover {
    color: var(--accent-dark, #b8882e);
    gap: 10px;
  }
  .guide-link .arrow {
    transition: transform 0.2s;
  }
  .guide-link:hover .arrow {
    transform: translateX(3px);
  }

  /* ===== FAQ ===== */
  .faq-list {
    display: grid;
    gap: 14px;
    max-width: 860px;
  }
  .faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0;
    overflow: hidden;
    transition: box-shadow 0.2s, border-color 0.2s;
  }
  .faq-item:hover {
    border-color: #d5dee6;
    box-shadow: var(--shadow-sm);
  }
  .faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 18px 22px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.98rem;
    color: var(--text);
    background: transparent;
    border: none;
    text-align: left;
    width: 100%;
  }
  .faq-q .faq-icon {
    width: 26px;
    height: 26px;
    border-radius: 8px;
    background: var(--primary-soft);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    transition: transform 0.3s, background 0.2s, color 0.2s;
  }
  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--accent);
    color: #1a2c3e;
  }
  .faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.3s ease;
    padding: 0 22px;
    color: var(--text-light);
    font-size: 0.93rem;
    line-height: 1.7;
  }
  .faq-item.open .faq-a {
    max-height: 300px;
    padding: 0 22px 20px;
  }

  /* ===== CTA ===== */
  .cta-section {
    background: linear-gradient(120deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    color: #fff;
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
  }
  .cta-section::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -50px;
    width: 220px;
    height: 220px;
    border: 1.5px dashed rgba(255, 255, 255, 0.12);
    border-radius: 50%;
  }
  .cta-section::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: -40px;
    width: 180px;
    height: 180px;
    border: 1px dashed rgba(217, 165, 74, 0.2);
    border-radius: 50%;
  }
  .cta-section h2 {
    font-size: 1.7rem;
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
  }
  .cta-section p {
    color: rgba(255, 255, 255, 0.75);
    max-width: 560px;
    margin: 0 auto 30px;
    font-size: 0.98rem;
    position: relative;
    z-index: 1;
  }
  .cta-actions {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    position: relative;
    z-index: 1;
  }
  .btn-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    color: var(--primary);
    font-weight: 700;
    padding: 13px 28px;
    border-radius: 999px;
    font-size: 0.95rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.14);
  }
  .btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  }
  .btn-outline-white {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    padding: 12px 26px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
  }
  .btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-2px);
  }

  /* ===== Footer ===== */
  .footer {
    margin-top: 40px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 40px 0 28px;
  }
  .footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
  }
  .footer-brand {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--primary);
  }
  .footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
  }
  .footer-links a {
    font-size: 0.9rem;
    color: var(--text-light);
  }
  .footer-links a:hover {
    color: var(--primary);
  }
  .footer-copy {
    font-size: 0.8rem;
    color: var(--text-lighter);
    width: 100%;
    text-align: center;
    margin-top: 20px;
    border-top: 1px solid var(--border-light);
    padding-top: 18px;
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .sidebar {
      width: 100%;
      height: auto;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: auto;
      padding: 14px 20px;
      flex-direction: row;
      align-items: center;
      border-right: none;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
    }
    .sidebar-top {
      margin-bottom: 0;
      flex: 1;
    }
    .brand {
      font-size: 1.25rem;
    }
    .brand-mark {
      width: 30px;
      height: 30px;
    }
    .brand-mark::after {
      left: 8px;
      top: 8px;
      width: 14px;
      height: 14px;
    }
    .main-nav {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: var(--surface);
      padding: 14px 20px 20px;
      border-bottom: 1px solid var(--border);
      box-shadow: var(--shadow);
      flex-direction: column;
      gap: 4px;
    }
    .main-nav.open {
      display: flex;
    }
    .nav-link:hover {
      transform: none;
    }
    .sidebar-foot {
      display: none;
    }
    .mobile-toggle {
      display: inline-flex;
    }
    .content-area {
      margin-left: 0;
      padding-top: 62px;
    }
    .page-hero {
      padding: 70px 0 55px;
    }
    .hero-decoration {
      opacity: 0.5;
    }
    .journey-list {
      grid-template-columns: repeat(3, 1fr);
    }
    .journey-arrow {
      display: none;
    }
    .feature-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    .split-block {
      grid-template-columns: 1fr;
      gap: 32px;
    }
  }
  @media (max-width: 768px) {
    .section {
      padding: 52px 0;
    }
    .page-hero h1 {
      font-size: 1.7rem;
    }
    .hero-desc {
      font-size: 0.95rem;
    }
    .btn-primary,
    .btn-ghost-light,
    .btn-white,
    .btn-outline-white {
      padding: 11px 22px;
      font-size: 0.9rem;
    }
    .journey-list {
      grid-template-columns: 1fr;
      gap: 14px;
    }
    .feature-grid {
      grid-template-columns: 1fr;
    }
    .guide-grid {
      grid-template-columns: 1fr;
    }
    .faq-q {
      font-size: 0.92rem;
      padding: 16px 18px;
    }
    .faq-a {
      padding: 0 18px;
    }
    .faq-item.open .faq-a {
      padding: 0 18px 18px;
    }
    .cta-section {
      padding: 40px 24px;
    }
    .cta-section h2 {
      font-size: 1.4rem;
    }
    .footer-inner {
      flex-direction: column;
      text-align: center;
      gap: 12px;
    }
    .footer-links {
      justify-content: center;
    }
  }
  @media (max-width: 520px) {
    .container {
      padding: 0 18px;
    }
    .page-hero {
      padding: 52px 0 40px;
    }
    .page-hero h1 {
      font-size: 1.5rem;
    }
    .hero-actions {
      flex-direction: column;
      align-items: stretch;
    }
    .btn-primary,
    .btn-ghost-light {
      width: 100%;
    }
    .content-area {
      padding-top: 58px;
    }
    .section {
      padding: 42px 0;
    }
    .split-media {
      border-radius: var(--radius);
    }
  }

/* roulang page: category2 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d5a87;
            --primary-dark: #14283f;
            --accent: #e9943e;
            --accent-light: #f5a95c;
            --accent-dark: #d07c24;
            --bg: #f5f7fb;
            --bg-white: #ffffff;
            --text: #1a2b3c;
            --text-weak: #6b7f94;
            --border: #e3e9f1;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(26, 43, 60, 0.06);
            --shadow-lg: 0 12px 40px rgba(26, 43, 60, 0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 260px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .site-layout {
            display: flex;
            min-height: 100vh;
        }
        .sidebar {
            width: var(--sidebar-width);
            position: fixed;
            top: 0;
            bottom: 0;
            left: 0;
            background: var(--bg-white);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 100;
            transition: transform 0.35s ease;
            box-shadow: 2px 0 12px rgba(26, 43, 60, 0.04);
        }
        .sidebar-brand {
            padding: 32px 28px 24px;
            border-bottom: 1px solid var(--border);
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }
        .sidebar-nav {
            padding: 20px 16px;
            flex: 1;
        }
        .main-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            border-radius: 10px;
            color: var(--text-weak);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background: rgba(30, 58, 95, 0.05);
            color: var(--primary);
            transform: translateX(4px);
        }
        .nav-link.active {
            background: linear-gradient(135deg, rgba(30, 58, 95, 0.08), rgba(233, 148, 62, 0.06));
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 22px;
            border-radius: 3px;
            background: var(--accent);
        }
        .nav-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            border: 1.5px solid currentColor;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .nav-link.active .nav-dot {
            background: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 0 8px rgba(233, 148, 62, 0.5);
        }
        .sidebar-note {
            padding: 20px 28px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-weak);
            letter-spacing: 2px;
        }
        .sidebar-note p {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .content-wrapper {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }
        .page-main {
            flex: 1;
        }
        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 14px;
            left: 14px;
            z-index: 200;
            width: 42px;
            height: 42px;
            background: var(--bg-white);
            border-radius: 10px;
            box-shadow: var(--shadow);
            align-items: center;
            justify-content: center;
        }
        .mobile-nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            position: relative;
            transition: var(--transition);
        }
        .mobile-nav-toggle span::before,
        .mobile-nav-toggle span::after {
            content: "";
            position: absolute;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            left: 0;
            transition: var(--transition);
        }
        .mobile-nav-toggle span::before {
            top: -6px;
        }
        .mobile-nav-toggle span::after {
            top: 6px;
        }
        .mobile-nav-toggle.open span {
            background: transparent;
        }
        .mobile-nav-toggle.open span::before {
            top: 0;
            transform: rotate(45deg);
        }
        .mobile-nav-toggle.open span::after {
            top: 0;
            transform: rotate(-45deg);
        }
        .overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(20, 40, 63, 0.5);
            z-index: 90;
            backdrop-filter: blur(2px);
        }
        .overlay.show {
            display: block;
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 90px 0 80px;
            background-size: cover;
            background-position: center;
            color: #fff;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(20, 40, 63, 0.88) 0%, rgba(20, 40, 63, 0.6) 50%, rgba(233, 148, 62, 0.35) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 24px;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 1px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 680px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(233, 148, 62, 0.4);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(233, 148, 62, 0.5);
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        /* Section spacing */
        .section {
            padding: 80px 0;
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 56px;
        }
        .section-tag {
            display: inline-block;
            padding: 6px 18px;
            background: rgba(233, 148, 62, 0.12);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-dark);
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-weak);
            font-size: 16px;
        }

        /* Directions cards */
        .directions {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }
        .directions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .dir-card {
            padding: 32px 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: var(--bg);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .dir-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .dir-card:hover::before {
            opacity: 1;
        }
        .dir-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            background: var(--bg-white);
        }
        .dir-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            margin-bottom: 18px;
            box-shadow: 0 4px 12px rgba(30, 58, 95, 0.2);
        }
        .dir-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .dir-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* Handbook / Path design */
        .handbook {
            background: var(--bg);
        }
        .handbook-grid {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .handbook-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .handbook-visual img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .handbook-visual .visual-caption {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 24px 20px;
            background: linear-gradient(transparent, rgba(20, 40, 63, 0.85));
            color: #fff;
            font-size: 14px;
            letter-spacing: 1px;
        }
        .path-steps {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .path-step {
            position: relative;
            padding-left: 56px;
            padding-bottom: 32px;
        }
        .path-step:last-child {
            padding-bottom: 0;
        }
        .path-step::before {
            content: "";
            position: absolute;
            left: 20px;
            top: 40px;
            width: 2px;
            height: calc(100% - 40px);
            background: linear-gradient(to bottom, var(--accent), rgba(233, 148, 62, 0.2));
        }
        .path-step:last-child::before {
            display: none;
        }
        .step-node {
            position: absolute;
            left: 12px;
            top: 2px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--accent);
            z-index: 2;
        }
        .path-step h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .path-step p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        .step-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--accent-dark);
            background: rgba(233, 148, 62, 0.1);
            padding: 2px 10px;
            border-radius: 20px;
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }

        /* Stats */
        .stats {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .stats::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(233, 148, 62, 0.15);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .stat-item .stat-num {
            font-size: 52px;
            font-weight: 800;
            color: var(--accent-light);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item .stat-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            letter-spacing: 1px;
        }

        /* Article list */
        .articles {
            background: var(--bg-white);
        }
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .article-item {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 24px 20px;
            border-radius: var(--radius);
            border: 1px solid transparent;
            transition: var(--transition);
        }
        .article-item:hover {
            background: var(--bg);
            border-color: var(--border);
            box-shadow: var(--shadow);
            transform: translateX(6px);
        }
        .article-thumb {
            width: 110px;
            height: 78px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .article-info {
            flex: 1;
        }
        .article-info .article-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent-dark);
            background: rgba(233, 148, 62, 0.1);
            padding: 2px 10px;
            border-radius: 16px;
            margin-bottom: 6px;
            font-weight: 500;
        }
        .article-info h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .article-info p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }
        .article-meta {
            font-size: 13px;
            color: var(--text-weak);
            flex-shrink: 0;
            white-space: nowrap;
        }
        .article-item:hover h3 {
            color: var(--accent-dark);
        }

        /* FAQ */
        .faq {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(233, 148, 62, 0.4);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            background: none;
            width: 100%;
            text-align: left;
        }
        .faq-question .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(30, 58, 95, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .faq-question .faq-icon::after {
            content: "+";
            font-size: 18px;
            color: var(--primary);
        }
        .faq-item.active .faq-question .faq-icon {
            background: var(--accent);
        }
        .faq-item.active .faq-question .faq-icon::after {
            content: "−";
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: 0;
        }

        /* CTA */
        .cta {
            background: var(--bg-white);
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-lg);
            padding: 64px 56px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cta-box::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(233, 148, 62, 0.2);
        }
        .cta-box h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 15px;
        }
        .cta-box .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 40px 0;
        }
        .footer-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            text-align: center;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent-light);
        }
        .footer-copy {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            margin-top: 8px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .sidebar {
                transform: translateX(-100%);
                box-shadow: none;
                width: 280px;
            }
            .sidebar.open {
                transform: translateX(0);
                box-shadow: var(--shadow-lg);
            }
            .content-wrapper {
                margin-left: 0;
            }
            .mobile-nav-toggle {
                display: flex;
            }
            .directions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .handbook-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .handbook-visual img {
                height: 320px;
            }
            .page-hero {
                padding: 80px 0 60px;
            }
            .page-hero h1 {
                font-size: 34px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 36px;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .article-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .article-thumb {
                width: 100%;
                height: 160px;
            }
            .article-meta {
                white-space: normal;
            }
            .cta-box {
                flex-direction: column;
                padding: 40px 24px;
                text-align: center;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .directions-grid {
                grid-template-columns: 1fr;
            }
            .handbook-visual img {
                height: 220px;
            }
            .path-step {
                padding-left: 44px;
            }
            .footer-links {
                gap: 12px;
                flex-direction: column;
            }
            .page-hero {
                padding: 60px 0 40px;
            }
            .page-hero .hero-desc {
                font-size: 15px;
            }
        }
        @media (min-width: 1025px) {
            .mobile-nav-toggle {
                display: none !important;
            }
            .overlay {
                display: none !important;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0b2545;
            --primary-light: #1b3a5c;
            --primary-dark: #071a33;
            --accent: #14b8a6;
            --accent-strong: #0d9488;
            --accent-soft: #ccfbf1;
            --bg: #f5f7fa;
            --white: #ffffff;
            --text: #1e293b;
            --text-light: #5d6d7e;
            --text-muted: #8a9aa9;
            --border: #e1e8ef;
            --radius-lg: 18px;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 8px rgba(11, 37, 69, 0.05);
            --shadow: 0 8px 28px rgba(11, 37, 69, 0.08);
            --shadow-lg: 0 16px 48px rgba(11, 37, 69, 0.16);
            --transition: 0.3s ease;
            --sidebar-w: 248px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(20, 184, 166, 0.5);
            outline-offset: 2px;
        }

        /* ===== 布局 ===== */
        .site-wrap {
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-w);
            background: linear-gradient(180deg, var(--primary-dark), var(--primary));
            color: #fff;
            z-index: 100;
            display: flex;
            flex-direction: column;
            padding: 32px 20px 24px;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .brand {
            font-size: 21px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            padding: 0 12px;
            margin-bottom: 36px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .brand i {
            color: var(--accent);
            font-size: 20px;
        }

        /* ===== 导航 ===== */
        .main-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 11px 14px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .nav-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
            flex-shrink: 0;
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        .nav-link.active {
            background: rgba(20, 184, 166, 0.18);
            color: #fff;
            font-weight: 600;
            border-color: rgba(20, 184, 166, 0.3);
        }
        .nav-link.active .nav-dot {
            background: var(--accent);
            box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.2);
        }
        .sidebar-foot {
            margin-top: auto;
            padding: 0 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #10b981;
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
            flex-shrink: 0;
        }
        .sidebar-foot .line {
            flex: 1;
            height: 1px;
            background: rgba(255, 255, 255, 0.1);
        }

        /* ===== 内容区 ===== */
        .content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        .main {
            flex: 1;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 84px 0 72px;
            color: #fff;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(7, 26, 51, 0.93) 0%, rgba(11, 37, 69, 0.74) 55%, rgba(11, 37, 69, 0.35) 100%);
            z-index: 1;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .hero .badge {
            margin-bottom: 18px;
        }
        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }
        .hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            max-width: 540px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== 徽章 ===== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: var(--accent-soft);
            color: var(--accent-strong);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--accent-strong);
        }
        .hero .badge {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(4px);
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            transition: var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 18px rgba(20, 184, 166, 0.3);
        }
        .btn-primary:hover {
            background: var(--accent-strong);
            transform: translateY(-2px);
            box-shadow: 0 10px 26px rgba(20, 184, 166, 0.36);
        }
        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
        }
        .btn-light:hover {
            background: var(--bg);
            transform: translateY(-2px);
        }

        /* ===== 板块 ===== */
        .section {
            padding: 76px 0;
        }
        .section-alt {
            background: var(--white);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-head .badge {
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-head p {
            color: var(--text-light);
            font-size: 16px;
        }

        /* ===== 防护卡片 ===== */
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .security-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .security-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .security-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .security-card:hover::after {
            transform: scaleX(1);
        }
        .card-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: var(--accent-soft);
            color: var(--accent-strong);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
        }
        .security-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .security-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
        }

        /* ===== 步骤 ===== */
        .steps-wrap {
            position: relative;
        }
        .steps-wrap::before {
            content: "";
            position: absolute;
            top: 24px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.25;
            z-index: 1;
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
            z-index: 2;
        }
        .step-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            text-align: center;
            padding: 30px 20px 24px;
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            position: relative;
            z-index: 2;
            box-shadow: 0 4px 12px rgba(11, 37, 69, 0.25);
        }
        .step-card:nth-child(even) .step-num {
            background: var(--accent);
        }
        .step-card h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 自查清单 + 图文 ===== */
        .split {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
        }
        .split-content h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.3px;
        }
        .split-content > p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .checklist {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .checklist li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 16px;
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            transition: var(--transition);
        }
        .checklist li:hover {
            border-color: var(--accent);
            background: var(--accent-soft);
        }
        .checklist li i {
            color: var(--accent-strong);
            font-size: 18px;
            margin-top: 2px;
        }
        .split-media img {
            width: 100%;
            border-radius: var(--radius-lg);
            object-fit: cover;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            gap: 16px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-item details p {
            padding: 0 24px 22px;
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.75;
        }
        .faq-item details[open] summary {
            color: var(--accent-strong);
        }

        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            padding: 72px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: "";
            position: absolute;
            right: -200px;
            top: -100px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(20, 184, 166, 0.25), transparent 60%);
        }
        .cta .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta p {
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            font-size: 16px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 40px 0;
        }
        .footer-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .footer-links {
            display: flex;
            gap: 18px;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-copy {
            width: 100%;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
            margin-top: 16px;
        }

        /* ===== 动画 ===== */
        .js .anim {
            opacity: 0;
            transform: translateY(18px);
            transition: opacity 0.55s ease, transform 0.55s ease;
        }
        .js .anim-done {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .steps-wrap::before {
                display: none;
            }
        }
        @media (max-width: 992px) {
            .sidebar {
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: auto;
                width: 100%;
                height: 60px;
                flex-direction: row;
                align-items: center;
                padding: 0 16px;
                gap: 12px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                box-shadow: 0 4px 16px rgba(7, 26, 51, 0.3);
            }
            .brand {
                margin-bottom: 0;
                padding: 0;
                font-size: 17px;
                margin-right: 8px;
                white-space: nowrap;
            }
            .main-nav {
                flex-direction: row;
                overflow-x: auto;
                gap: 2px;
                flex: 1;
            }
            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
                white-space: nowrap;
            }
            .nav-link.active {
                border-color: transparent;
            }
            .sidebar-foot {
                display: none;
            }
            .content {
                margin-left: 0;
                padding-top: 60px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .split {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .section {
                padding: 56px 0;
            }
            .cta {
                padding: 56px 0;
            }
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 18px;
            }
            .hero {
                padding: 56px 0 48px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero p {
                font-size: 15px;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head p {
                font-size: 14px;
            }
            .footer-inner {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
        }