/* roulang page: index */
:root {
    --primary: #0d1b2a;
    --primary-light: #1b2838;
    --primary-lighter: #2a3a4c;
    --accent: #e63946;
    --accent-dark: #b02a35;
    --bg: #f0f2f5;
    --bg-deep: #0a1628;
    --card-bg: #ffffff;
    --text: #1a1a2e;
    --text-secondary: #566573;
    --text-light: #8a94a0;
    --border: #dfe4ec;
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(13, 27, 42, 0.08);
    --shadow-lg: 0 10px 40px rgba(13, 27, 42, 0.14);
    --sidebar-width: 260px;
    --transition: 0.25s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

.site-layout { display: flex; min-height: 100vh; }

/* ====== Sidebar ====== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-deep);
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    padding: 28px 24px;
    border-right: 1px solid rgba(255,255,255,0.06);
    transition: transform var(--transition);
}

.sidebar-brand {
    padding: 12px 8px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 24px;
}

.sidebar-brand a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
    white-space: nowrap;
}

.sidebar-brand a i {
    color: var(--accent);
    font-size: 26px;
}

.sidebar-brand a:hover { color: #fff; }

.sidebar-nav { flex: 1; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    margin-bottom: 8px;
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.72);
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition);
    border-left: 3px solid transparent;
}

.nav-item i { width: 20px; text-align: center; font-size: 16px; }

.nav-item:hover {
    background: rgba(255,255,255,0.06);
    color: #fff;
    transform: translateX(2px);
}

.nav-item.active {
    background: rgba(230,57,70,0.15);
    color: #fff;
    border-left-color: var(--accent);
    font-weight: 600;
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.sidebar-status {
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius);
    padding: 16px;
}

.sidebar-status .status-dot {
    width: 8px; height: 8px;
    background: #2ecc71;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
    box-shadow: 0 0 8px rgba(46,204,113,0.6);
}

.sidebar-status span {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
}

/* ====== Main Area ====== */
.main-area {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-width: 0;
    display: flex;
    flex-direction: column;
}

/* ====== Mobile Header ====== */
.mobile-header {
    display: none;
    background: var(--bg-deep);
    padding: 16px 20px;
    position: sticky;
    top: 0;
    z-index: 90;
    justify-content: space-between;
    align-items: center;
}

.mobile-brand {
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    white-space: nowrap;
}

.menu-toggle {
    background: rgba(255,255,255,0.1);
    border: none;
    color: #fff;
    width: 42px; height: 42px;
    border-radius: 8px;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.menu-toggle:hover { background: rgba(255,255,255,0.2); }

.mobile-nav {
    display: none;
    background: var(--bg-deep);
    padding: 8px 20px 16px;
    flex-direction: column;
    gap: 4px;
}

.mobile-nav a {
    padding: 12px 16px;
    border-radius: 8px;
    color: rgba(255,255,255,0.75);
    font-size: 15px;
    transition: all var(--transition);
}

.mobile-nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.mobile-nav a.active { background: rgba(230,57,70,0.15); color: #fff; }

.mobile-nav.open { display: flex; }

/* ====== Container ====== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    width: 100%;
}

/* ====== Hero ====== */
.hero {
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    position: relative;
    padding: 100px 0 90px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(13,27,42,0.92) 0%, rgba(13,27,42,0.75) 50%, rgba(13,27,42,0.55) 100%);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(230,57,70,0.22);
    border: 1px solid rgba(230,57,70,0.4);
    color: #ff8a8a;
    padding: 6px 16px;
    border-radius: 40px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 22px;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 900;
    color: #fff;
    line-height: 1.15;
    letter-spacing: 1px;
    margin-bottom: 18px;
}

.hero h1 span { color: var(--accent); }

.hero-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.82);
    line-height: 1.7;
    max-width: 600px;
    margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    transition: all var(--transition);
    cursor: pointer;
}

.btn i { font-size: 16px; }

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 16px rgba(230,57,70,0.35);
}

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(230,57,70,0.45);
}

.btn-outline {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.18);
    border-color: rgba(255,255,255,0.5);
    transform: translateY(-2px);
}

.hero-meta {
    display: flex;
    gap: 24px;
    margin-top: 36px;
    flex-wrap: wrap;
}

.hero-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.7);
    font-size: 13px;
}

.hero-meta .meta-item i { color: var(--accent); }

/* ====== Section General ====== */
.section { padding: 80px 0; }
.section-alt { background: #f7f8fa; }

.section-head {
    margin-bottom: 48px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(230,57,70,0.08);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-tag i { font-size: 14px; }

.section-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 12px;
    color: var(--text);
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 640px;
    line-height: 1.6;
}

/* ====== Feature Cards ====== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 36px 30px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
    background: var(--accent);
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-card:hover::after { opacity: 1; }

.feature-icon {
    width: 60px; height: 60px;
    background: rgba(230,57,70,0.1);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon i {
    font-size: 24px;
    color: var(--accent);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ====== Category Entry ====== */
.category-entry {
    background: var(--bg-deep);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.category-entry::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 400px; height: 400px;
    background: rgba(230,57,70,0.08);
    border-radius: 50%;
    transform: translate(200px, -200px);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 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);
    padding: 40px;
    transition: all var(--transition);
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.category-card:hover {
    background: rgba(255,255,255,0.09);
    transform: translateY(-4px);
    border-color: rgba(230,57,70,0.4);
}

.category-card .cat-icon {
    width: 64px; height: 64px;
    background: rgba(230,57,70,0.2);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.category-card .cat-icon i {
    font-size: 26px;
    color: #ff8a8a;
}

.category-card h3 {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.category-card p {
    color: rgba(255,255,255,0.65);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 14px;
}

.category-card .cat-link {
    color: #ff8a8a;
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap var(--transition);
}

.category-card .cat-link:hover { gap: 10px; }

/* ====== News Section ====== */
.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 10px;
}

.news-item {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 28px 30px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.news-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
    border-left: 4px solid var(--accent);
}

.news-item .badge {
    background: rgba(230,57,70,0.1);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

.news-item .news-body h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 6px;
    line-height: 1.4;
}

.news-item .news-body h3 a {
    color: var(--text);
    transition: color var(--transition);
}

.news-item .news-body h3 a:hover { color: var(--accent); }

.news-item .news-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-item .news-date {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.news-empty {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    color: var(--text-secondary);
    border: 1px dashed var(--border);
}

/* ====== Stats ====== */
.stats-section {
    background: url('/assets/images/backpic/back-2.png') center/cover no-repeat fixed;
    position: relative;
    padding: 80px 0;
}

.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(13,27,42,0.88);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    position: relative;
    z-index: 2;
}

.stat-item {
    text-align: center;
    padding: 32px 20px;
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.08);
    transition: all var(--transition);
}

.stat-item:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-4px);
}

.stat-item .stat-num {
    font-size: 42px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 6px;
    font-family: 'Courier New', monospace;
}

.stat-item .stat-num span { color: var(--accent); }

.stat-item .stat-label {
    color: rgba(255,255,255,0.7);
    font-size: 14px;
}

/* ====== Process ====== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.process-step {
    text-align: center;
    padding: 36px 20px;
    position: relative;
}

.process-step .step-num {
    width: 56px; height: 56px;
    background: var(--bg-deep);
    color: #fff;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 800;
    margin: 0 auto 18px;
    position: relative;
    z-index: 2;
}

.process-step .step-num::after {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: 12px;
    border: 1px solid rgba(230,57,70,0.5);
}

.process-step h4 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

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

.process-step:not(:last-child)::before {
    content: '';
    position: absolute;
    top: 48px;
    right: -14px;
    width: 28px;
    height: 2px;
    background: var(--border);
    z-index: 1;
}

/* ====== Advantages ====== */
.adv-section {
    background: var(--bg-deep);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.adv-section::after {
    content: '';
    position: absolute;
    bottom: -100px; left: -100px;
    width: 350px; height: 350px;
    background: rgba(230,57,70,0.06);
    border-radius: 50%;
}

.adv-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.adv-content h2 {
    color: #fff;
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.3;
}

.adv-content p {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 30px;
}

.adv-list { display: flex; flex-direction: column; gap: 16px; }

.adv-list-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    padding: 20px 24px;
    transition: all var(--transition);
}

.adv-list-item:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(230,57,70,0.3);
}

.adv-list-item i {
    color: var(--accent);
    font-size: 20px;
    margin-top: 2px;
    flex-shrink: 0;
}

.adv-list-item h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.adv-list-item p {
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    line-height: 1.5;
    margin: 0;
}

.adv-visual {
    background: url('/assets/images/coverpic/cover-2.png') center/cover no-repeat;
    border-radius: var(--radius-lg);
    min-height: 420px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.adv-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(13,27,42,0.8) 100%);
}

.adv-visual .visual-tag {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 2;
    background: rgba(230,57,70,0.9);
    color: #fff;
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* ====== FAQ ====== */
.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px 40px;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: all var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow);
    border-color: rgba(230,57,70,0.3);
}

.faq-item .faq-q {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-item .faq-q i {
    color: var(--accent);
    font-size: 14px;
    background: rgba(230,57,70,0.1);
    width: 24px; height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.faq-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
    padding-left: 34px;
}

/* ====== CTA Section ====== */
.cta-section {
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    position: relative;
    padding: 80px 0;
    text-align: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(13,27,42,0.85);
}

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

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

.cta-inner p {
    color: rgba(255,255,255,0.75);
    font-size: 16px;
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ====== Footer ====== */
.site-footer {
    background: var(--bg-deep);
    padding: 60px 0 30px;
    color: rgba(255,255,255,0.6);
}

.footer-brand {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
    display: block;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    max-width: 360px;
    margin-bottom: 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    margin-bottom: 30px;
}

.footer-title {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}

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

.footer-links a {
    color: rgba(255,255,255,0.6);
    font-size: 14px;
    transition: color var(--transition);
}

.footer-links a:hover { color: #fff; }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
}

/* ====== Responsive ====== */
@media (max-width: 1024px) {
    .hero h1 { font-size: 42px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .process-step:not(:last-child)::before { display: none; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .adv-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .main-area { margin-left: 0; }
    .mobile-header { display: flex; }
    .mobile-nav { display: none; }
    .mobile-nav.open { display: flex; }
    .container { padding: 0 20px; }
    .section { padding: 60px 0; }
    .hero { padding: 70px 0; }
    .hero h1 { font-size: 32px; }
    .hero-desc { font-size: 16px; }
    .category-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .faq-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .section-title { font-size: 28px; }
}

@media (max-width: 520px) {
    .hero h1 { font-size: 26px; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
    .process-grid { grid-template-columns: 1fr; }
    .news-item { flex-direction: column; gap: 10px; padding: 20px; }
    .cta-inner h2 { font-size: 28px; }
    .adv-visual { min-height: 280px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: category1 */
:root {
            --primary: #0d1b2a;
            --primary-light: #1b2a4a;
            --primary-dark: #060f1e;
            --accent: #e63946;
            --accent-hover: #c1121f;
            --accent-soft: rgba(230, 57, 70, 0.10);
            --bg: #f5f6fa;
            --card: #ffffff;
            --text: #1a1a2e;
            --text-weak: #6b7280;
            --border: #e8eaf0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --sidebar-w: 264px;
            --transition: all 0.3s ease;
        }
        
        * {
            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;
            -webkit-font-smoothing: antialiased;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        img {
            max-width: 100%;
            display: block;
        }
        
        ul {
            list-style: none;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        
        .page-shell {
            min-height: 100vh;
            width: 100%;
        }
        
        /* ========== 侧边栏导航 ========== */
        .site-header {
            position: fixed;
            left: 0;
            top: 0;
            bottom: 0;
            width: var(--sidebar-w);
            z-index: 1000;
            background: linear-gradient(180deg, #0d1b2a 0%, #101c33 60%, #0a1524 100%);
            display: flex;
            flex-direction: column;
            padding: 28px 0 24px;
            border-right: 1px solid rgba(255, 255, 255, 0.04);
            box-shadow: 4px 0 30px rgba(0, 0, 0, 0.15);
        }
        
        .brand-wrap {
            padding: 0 24px;
            margin-bottom: 36px;
        }
        
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.3px;
            line-height: 1.35;
        }
        
        .brand-logo i {
            width: 38px;
            height: 38px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), #ff6b6b);
            border-radius: 10px;
            font-size: 17px;
            color: #fff;
        }
        
        .sidebar-nav {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0 12px;
        }
        
        .nav-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            border-left: 3px solid transparent;
            transition: var(--transition);
        }
        
        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }
        
        .nav-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.07);
        }
        
        .nav-item:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: -2px;
        }
        
        .nav-item.active {
            color: #fff;
            background: rgba(230, 57, 70, 0.16);
            border-left-color: var(--accent);
            font-weight: 600;
        }
        
        .header-status {
            margin: 20px 24px 0;
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
        }
        
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #2dd4bf;
            box-shadow: 0 0 8px rgba(45, 212, 191, 0.6);
            flex-shrink: 0;
        }
        
        .menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 20px;
            padding: 6px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        
        /* ========== 主内容区 ========== */
        .main-wrap {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        
        main {
            flex: 1;
        }
        
        /* ========== Page Hero ========== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            background: linear-gradient(128deg, rgba(10, 18, 32, 0.92) 40%, rgba(13, 35, 58, 0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            border-bottom: 3px solid var(--accent);
        }
        
        .hero-tagline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(230, 57, 70, 0.22);
            border: 1px solid rgba(230, 57, 70, 0.5);
            border-radius: 30px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 18px;
            color: #ffd7d9;
        }
        
        .hero-tagline i {
            font-size: 12px;
        }
        
        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        
        .page-hero .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            line-height: 1.8;
        }
        
        .hero-breadcrumb {
            margin-top: 28px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
        }
        
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            transition: var(--transition);
        }
        
        .hero-breadcrumb a:hover {
            color: var(--accent);
        }
        
        .hero-breadcrumb i {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.35);
        }
        
        /* ========== Section 通用 ========== */
        .section {
            padding: 80px 0;
        }
        
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        
        .section-tag::before {
            content: "";
            width: 22px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        
        .section-head {
            margin-bottom: 48px;
        }
        
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 10px;
        }
        
        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
            max-width: 640px;
        }
        
        /* ========== 服务总览 ========== */
        .guide-overview {
            display: flex;
            align-items: center;
            gap: 48px;
        }
        
        .guide-overview .overview-content {
            flex: 1;
        }
        
        .guide-overview .overview-content h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text);
            line-height: 1.4;
        }
        
        .guide-overview .overview-content p {
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 14px;
        }
        
        .guide-overview .overview-list {
            margin-top: 24px;
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }
        
        .overview-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text);
        }
        
        .overview-list li i {
            color: var(--accent);
            font-size: 14px;
            flex-shrink: 0;
        }
        
        .overview-image {
            flex: 1;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        
        .overview-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(230, 57, 70, 0.08), transparent 40%);
            border-radius: var(--radius);
        }
        
        .overview-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        
        /* ========== 核心服务模块 ========== */
        .services-section {
            background: linear-gradient(180deg, #fff 0%, #f8f9fc 100%);
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 8px;
        }
        
        .service-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }
        
        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent 70%);
            opacity: 0.5;
            transition: var(--transition);
        }
        
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(230, 57, 70, 0.25);
        }
        
        .service-card:hover::before {
            opacity: 1;
            height: 4px;
        }
        
        .service-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 22px;
            margin-bottom: 20px;
        }
        
        .service-icon.red {
            background: rgba(230, 57, 70, 0.12);
            color: var(--accent);
        }
        
        .service-icon.blue {
            background: rgba(59, 130, 246, 0.12);
            color: #3b82f6;
        }
        
        .service-icon.emerald {
            background: rgba(16, 185, 129, 0.12);
            color: #10b981;
        }
        
        .service-icon.amber {
            background: rgba(245, 158, 11, 0.12);
            color: #f59e0b;
        }
        
        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        
        .service-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }
        
        /* ========== 使用流程 ========== */
        .process-section {
            background: #fff;
        }
        
        .process-wrap {
            display: flex;
            align-items: center;
            gap: 56px;
        }
        
        .process-steps {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px;
            border-radius: 14px;
            border: 1px solid transparent;
            transition: var(--transition);
        }
        
        .step-item:hover {
            background: rgba(230, 57, 70, 0.04);
            border-color: rgba(230, 57, 70, 0.15);
        }
        
        .step-num {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
            color: var(--accent);
            background: rgba(230, 57, 70, 0.12);
            border-radius: 50%;
            border: 2px solid rgba(230, 57, 70, 0.25);
        }
        
        .step-info h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        
        .step-info p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }
        
        .process-image {
            flex: 1;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .process-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        
        /* ========== 服务特性 ========== */
        .features-section {
            background: linear-gradient(135deg, #0d1b2a 0%, #131f38 60%, #1a2c4a 100%);
            color: #fff;
            padding: 80px 0;
        }
        
        .features-section .section-head h2 {
            color: #fff;
        }
        
        .features-section .section-head p {
            color: rgba(255, 255, 255, 0.6);
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        
        .feature-item {
            padding: 34px 24px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            text-align: center;
            transition: var(--transition);
        }
        
        .feature-item:hover {
            background: rgba(255, 255, 255, 0.11);
            border-color: rgba(230, 57, 70, 0.4);
            transform: translateY(-4px);
        }
        
        .feature-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        
        .feature-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 600;
        }
        
        .feature-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 8px;
            line-height: 1.6;
        }
        
        /* ========== FAQ ========== */
        .faq-section {
            background: #f8f9fc;
        }
        
        .faq-grid {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.2);
            box-shadow: var(--shadow);
        }
        
        .faq-item.open {
            border-color: rgba(230, 57, 70, 0.3);
            box-shadow: var(--shadow);
        }
        
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
        }
        
        .faq-question:hover {
            color: var(--accent);
        }
        
        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--accent);
            transition: transform 0.3s ease;
        }
        
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        
        .faq-answer {
            display: none;
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
        }
        
        /* ========== CTA ========== */
        .cta-section {
            padding: 70px 0;
            background: #fff;
        }
        
        .cta-box {
            background: linear-gradient(135deg, #0d1b2a 0%, #16233c 100%);
            border-radius: 20px;
            padding: 56px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 36px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        
        .cta-box::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(230, 57, 70, 0.15);
        }
        
        .cta-box::after {
            content: "";
            position: absolute;
            right: 30px;
            bottom: -30px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(230, 57, 70, 0.08);
        }
        
        .cta-text h2 {
            color: #fff;
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 8px;
        }
        
        .cta-text p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 15px;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
        }
        
        .btn-accent:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 22px rgba(230, 57, 70, 0.4);
        }
        
        .btn-accent:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }
        
        .btn-ghost {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
        }
        
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }
        
        /* ========== 页脚 ========== */
        .site-footer {
            background: #0a1524;
            color: rgba(255, 255, 255, 0.6);
            padding: 56px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        
        .footer-brand i {
            color: var(--accent);
            font-size: 20px;
        }
        
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 360px;
        }
        
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            line-height: 1.6;
        }
        
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 2px;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        
        .footer-bottom span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        
        /* ========== 响应式 ========== */
        @media screen and (max-width: 1200px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media screen and (max-width: 1024px) {
            .site-header {
                position: sticky;
                top: 0;
                left: 0;
                width: 100%;
                height: auto;
                flex-direction: row;
                align-items: center;
                padding: 12px 20px;
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            }
            
            .brand-wrap {
                padding: 0;
                margin-bottom: 0;
                margin-right: 16px;
            }
            
            .brand-logo {
                font-size: 15px;
            }
            
            .brand-logo i {
                width: 32px;
                height: 32px;
                font-size: 14px;
                border-radius: 8px;
            }
            
            .sidebar-nav {
                display: none;
                position: fixed;
                top: 57px;
                left: 0;
                width: 100%;
                background: #0d1b2a;
                flex-direction: column;
                padding: 12px 16px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                gap: 2px;
                z-index: 999;
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
            }
            
            .sidebar-nav.show {
                display: flex;
            }
            
            .nav-item {
                border-left: none;
                border-radius: 10px;
                padding: 12px 14px;
            }
            
            .nav-item.active {
                border-left: none;
                border-left: 3px solid var(--accent);
                border-radius: 10px;
            }
            
            .header-status {
                margin: 0 12px 0 auto;
                padding: 8px 12px;
                font-size: 12px;
            }
            
            .menu-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
                width: 40px;
                height: 40px;
                padding: 0;
                font-size: 18px;
            }
            
            .main-wrap {
                margin-left: 0;
            }
            
            .page-hero {
                padding: 72px 0 64px;
            }
            
            .page-hero h1 {
                font-size: 34px;
            }
            
            .guide-overview {
                flex-direction: column;
                gap: 32px;
            }
            
            .overview-image img {
                height: 260px;
            }
            
            .process-wrap {
                flex-direction: column;
                gap: 36px;
            }
            
            .process-image img {
                height: 280px;
            }
            
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        
        @media screen and (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            
            .services-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            
            .section-head h2 {
                font-size: 26px;
            }
            
            .page-hero h1 {
                font-size: 28px;
            }
            
            .page-hero .hero-desc {
                font-size: 15px;
            }
            
            .cta-box {
                padding: 36px 24px;
                flex-direction: column;
                text-align: center;
                gap: 20px;
            }
        }
        
        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            
            .site-header {
                padding: 10px 14px;
            }
            
            .brand-logo {
                font-size: 14px;
                gap: 8px;
            }
            
            .brand-logo i {
                width: 28px;
                height: 28px;
                font-size: 12px;
            }
            
            .header-status {
                display: none;
            }
            
            .page-hero {
                padding: 56px 0 48px;
            }
            
            .page-hero h1 {
                font-size: 24px;
            }
            
            .hero-tagline {
                font-size: 12px;
                padding: 5px 12px;
            }
            
            .section {
                padding: 44px 0;
            }
            
            .section-head {
                margin-bottom: 32px;
            }
            
            .section-head h2 {
                font-size: 22px;
            }
            
            .overview-image img {
                height: 200px;
            }
            
            .service-card {
                padding: 24px 18px;
            }
            
            .step-item {
                padding: 14px;
                gap: 12px;
            }
            
            .step-num {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }
            
            .process-image img {
                height: 220px;
            }
            
            .feature-num {
                font-size: 32px;
            }
            
            .faq-question {
                padding: 16px 16px;
                font-size: 15px;
            }
            
            .faq-answer {
                padding: 0 16px 14px;
            }
            
            .cta-box {
                padding: 28px 18px;
                border-radius: 14px;
            }
            
            .cta-text h2 {
                font-size: 20px;
            }
            
            .btn {
                width: 100%;
                justify-content: center;
            }
            
            .site-footer {
                padding: 40px 0 24px;
            }
            
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0b1322;
            --primary-light: #14202e;
            --secondary: #101b2b;
            --accent: #e23b3b;
            --accent-dark: #c92a2a;
            --gold: #f0a500;
            --bg: #f5f7fb;
            --bg-deep: #e9edf3;
            --card: #ffffff;
            --text: #17202b;
            --text-weak: #64748b;
            --muted: #94a3b8;
            --border: #dde4ec;
            --radius: 18px;
            --radius-sm: 12px;
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-hover: 0 18px 42px rgba(15, 23, 42, 0.14);
            --font: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
            --mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
            --transition: 0.28s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        ul, ol {
            list-style: none;
        }

        button, input, select, textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .app-layout {
            display: flex;
            min-height: 100vh;
        }

        .sidebar {
            width: 264px;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            background: linear-gradient(170deg, #0b1322 0%, #111d31 100%);
            color: #fff;
            padding: 28px 22px;
            display: flex;
            flex-direction: column;
            z-index: 100;
            border-right: 1px solid rgba(255, 255, 255, 0.05);
            overflow-y: auto;
        }

        .sidebar-brand {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 20px;
        }

        .brand-link {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--accent), #7a1f1f);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #fff;
            box-shadow: 0 6px 16px rgba(226, 59, 59, 0.35);
        }

        .brand-text {
            font-size: 17px;
            font-weight: 800;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .brand-sub {
            font-family: var(--mono);
            font-size: 10px;
            letter-spacing: 2.2px;
            color: #5d6b7d;
            margin-top: 8px;
            text-transform: uppercase;
            padding-left: 54px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 36px;
            flex: 1;
        }

        .nav-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 13px 16px;
            border-radius: 12px;
            color: #aeb8c8;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            border-left: 3px solid transparent;
            background: transparent;
        }

        .nav-item i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }

        .nav-item:hover {
            background: rgba(255, 255, 255, 0.07);
            color: #fff;
            transform: translateX(3px);
        }

        .nav-item:focus-visible {
            outline: 2px solid var(--gold);
            outline-offset: 2px;
        }

        .nav-item.active {
            background: linear-gradient(90deg, rgba(226, 59, 59, 0.24), rgba(226, 59, 59, 0));
            color: #fff;
            border-left-color: var(--accent);
        }

        .sidebar-footer {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
        }

        .status-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #8ea0b5;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.16);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.55; }
        }

        .sidebar-copy {
            font-size: 12px;
            color: #5d6b7d;
            margin-top: 10px;
        }

        .main-wrap {
            margin-left: 264px;
            flex: 1;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        /* 文章 Hero */
        .article-hero {
            background: linear-gradient(135deg, rgba(11, 19, 34, 0.94) 0%, rgba(26, 42, 62, 0.86) 55%, rgba(11, 19, 34, 0.92) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 96px 0 72px;
            position: relative;
            border-bottom: 3px solid var(--accent);
        }

        .article-hero::after {
            content: "";
            position: absolute;
            right: 0;
            bottom: 0;
            width: 360px;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(226, 59, 59, 0.08));
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #8795a8;
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: #aeb8c8;
            transition: color var(--transition);
        }

        .breadcrumb a:hover {
            color: var(--gold);
        }

        .breadcrumb i {
            font-size: 12px;
            color: #5d6b7d;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 18px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }

        .badge-accent {
            background: rgba(226, 59, 59, 0.18);
            color: #ffd7d7;
            border: 1px solid rgba(226, 59, 59, 0.35);
        }

        .badge-gold {
            background: rgba(240, 165, 0, 0.18);
            color: #ffd98a;
            border: 1px solid rgba(240, 165, 0, 0.35);
        }

        .article-title {
            font-size: clamp(26px, 4vw, 42px);
            line-height: 1.25;
            font-weight: 900;
            letter-spacing: -0.5px;
            margin: 0 0 20px;
            max-width: 900px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: #aeb8c8;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .article-meta i {
            color: var(--accent);
        }

        /* 文章主体 */
        .article-wrap {
            padding: 64px 0 80px;
        }

        .article-card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            padding-bottom: 36px;
        }

        .article-cover {
            width: 100%;
            height: auto;
            max-height: 420px;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }

        .article-content {
            padding: 36px 40px 24px;
        }

        .article-content h2 {
            font-size: 24px;
            margin: 32px 0 14px;
            color: var(--primary);
            border-left: 4px solid var(--accent);
            padding-left: 14px;
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 20px;
            margin: 26px 0 12px;
            color: var(--primary);
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: 16px;
            color: #3a4657;
            font-size: 16px;
            line-height: 1.9;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 22px;
            padding-left: 6px;
        }

        .article-content ul li {
            list-style: disc;
            margin-bottom: 8px;
            color: #3a4657;
            line-height: 1.8;
        }

        .article-content ol li {
            list-style: decimal;
            margin-bottom: 8px;
            color: #3a4657;
            line-height: 1.8;
        }

        .article-content blockquote {
            border-left: 4px solid var(--gold);
            background: #fffbf0;
            padding: 18px 22px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            color: #5a4a1f;
            font-style: italic;
        }

        .article-content img {
            border-radius: 14px;
            margin: 24px 0;
        }

        .article-content a {
            color: var(--accent);
            font-weight: 600;
            border-bottom: 1px solid rgba(226, 59, 59, 0.3);
        }

        .article-content a:hover {
            border-bottom-color: var(--accent);
        }

        .notice-box {
            background: var(--bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius-sm);
            padding: 28px;
            text-align: center;
            color: var(--text-weak);
        }

        .notice-box h3 {
            margin-bottom: 8px;
        }

        .notice-box a {
            color: var(--accent);
            font-weight: 700;
        }

        .article-info-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 8px 40px 0;
            padding: 20px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
        }

        .info-cell {
            display: flex;
            flex-direction: column;
            gap: 4px;
            font-size: 13px;
        }

        .info-cell i {
            color: var(--accent);
            font-size: 16px;
            margin-bottom: 4px;
        }

        .info-cell span {
            color: var(--text-weak);
        }

        .info-cell strong {
            color: var(--text);
            font-size: 13px;
            line-height: 1.4;
        }

        .not-found-box {
            text-align: center;
            padding: 72px 32px;
        }

        .not-found-box > i {
            font-size: 48px;
            color: var(--accent);
            margin-bottom: 18px;
        }

        .not-found-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .not-found-box p {
            color: var(--text-weak);
            margin-bottom: 24px;
        }

        .button {
            border-radius: 10px;
            padding: 12px 24px;
            font-weight: 700;
            font-size: 15px;
            border: 0;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
        }

        .button:hover {
            transform: translateY(-2px);
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 18px rgba(226, 59, 59, 0.28);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            box-shadow: 0 10px 26px rgba(226, 59, 59, 0.38);
        }

        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 2px solid var(--border);
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn-outline:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

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

        .btn-accent:hover {
            background: var(--accent-dark);
        }

        .btn-gold {
            background: var(--gold);
            color: #1b2430;
        }

        .btn-gold:hover {
            background: #d49400;
            color: #fff;
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-weak);
            padding: 10px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            transition: all var(--transition);
        }

        .btn-ghost:hover {
            color: var(--accent);
            background: rgba(226, 59, 59, 0.08);
        }

        .text-link {
            color: var(--accent);
            font-weight: 700;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition);
        }

        .text-link:hover {
            gap: 12px;
        }

        /* 侧栏面板 */
        .side-panel {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .panel-card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 26px;
            border: 1px solid var(--border);
        }

        .panel-card h3 {
            font-size: 18px;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .panel-card h3 i {
            color: var(--accent);
        }

        .panel-card p {
            color: var(--text-weak);
            font-size: 14px;
            margin-bottom: 16px;
            line-height: 1.8;
        }

        .panel-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-weak);
            font-size: 14px;
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .panel-list i {
            color: #22c55e;
            margin-top: 4px;
        }

        .panel-card.dark {
            background: var(--primary);
            color: #fff;
            border-color: transparent;
        }

        .panel-card.dark p {
            color: #8ea0b5;
        }

        .panel-card.dark h3 {
            margin-top: 10px;
            color: #fff;
        }

        /* 推荐板块 */
        .related-section {
            background: var(--bg-deep);
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .section-kicker {
            font-family: var(--mono);
            font-size: 12px;
            letter-spacing: 3px;
            color: var(--accent);
            font-weight: 700;
            text-transform: uppercase;
            display: block;
            margin-bottom: 6px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 900;
            color: var(--primary);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .cover-card {
            background: var(--card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }

        .cover-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .cover-card img {
            width: 100%;
            height: 210px;
            object-fit: cover;
        }

        .cover-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .cover-body .badge {
            background: rgba(226, 59, 59, 0.1);
            color: var(--accent);
            align-self: flex-start;
        }

        .cover-body h3 {
            font-size: 18px;
            color: var(--primary);
            line-height: 1.4;
        }

        .cover-body p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }

        .cover-body .text-link {
            margin-top: 8px;
        }

        /* FAQ */
        .faq-section {
            background: var(--card);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .faq-item {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .faq-item .badge {
            background: rgba(240, 165, 0, 0.12);
            color: #9a6b00;
            font-size: 12px;
            margin-bottom: 14px;
        }

        .faq-item h3 {
            font-size: 17px;
            color: var(--primary);
            margin-bottom: 10px;
            line-height: 1.45;
        }

        .faq-item p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.8;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(11, 19, 34, 0.92), rgba(15, 31, 49, 0.88)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            padding: 72px 0;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }

        .cta-text h2 {
            font-size: 30px;
            font-weight: 900;
            margin-bottom: 10px;
        }

        .cta-text p {
            color: #aeb8c8;
            font-size: 15px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: #9aa7ba;
            padding: 60px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand i {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #77889c;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .footer-links a {
            font-size: 14px;
            color: #9aa7ba;
            transition: color var(--transition);
            display: inline-flex;
            align-items: center;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            font-size: 13px;
            color: #5d6b7d;
        }

        .footer-bottom i {
            color: var(--accent);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .sidebar {
                position: static;
                width: 100%;
                min-height: auto;
                flex-direction: row;
                align-items: center;
                gap: 16px;
                padding: 12px 20px;
                overflow-x: auto;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
                border-right: 0;
            }

            .sidebar-brand {
                border-bottom: 0;
                padding-bottom: 0;
                flex-shrink: 0;
            }

            .brand-sub {
                display: none;
            }

            .sidebar-nav {
                flex-direction: row;
                gap: 6px;
                margin-top: 0;
                padding-bottom: 2px;
                overflow-x: auto;
                scrollbar-width: thin;
            }

            .nav-item {
                white-space: nowrap;
                padding: 9px 14px;
                border-left: 0;
                border-bottom: 3px solid transparent;
                border-radius: 8px;
            }

            .nav-item:hover {
                transform: none;
            }

            .nav-item.active {
                border-left: 0;
                border-bottom-color: var(--accent);
                background: rgba(255, 255, 255, 0.06);
            }

            .sidebar-footer {
                display: none;
            }

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

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

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

        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }

            .container {
                padding: 0 16px;
            }

            .article-hero {
                padding: 64px 0 48px;
            }

            .hero-inner {
                padding: 0 16px;
            }

            .article-content {
                padding: 24px 18px 16px;
            }

            .article-info-grid {
                margin: 8px 18px 0;
                padding: 16px;
                gap: 12px;
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 14px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }

            .nav-item {
                font-size: 13px;
                padding: 8px 10px;
            }

            .article-title {
                font-size: 22px;
            }

            .article-meta {
                gap: 12px;
                font-size: 13px;
            }

            .article-info-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
                padding: 14px;
                margin: 8px 14px 0;
            }

            .info-cell strong {
                font-size: 12px;
            }

            .cover-card img {
                height: 180px;
            }

            .cta-text h2 {
                font-size: 22px;
            }
        }