/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f2b4a;
  --primary-light: #1a4a7a;
  --primary-lighter: #2d6a9a;
  --secondary: #c9a84c;
  --secondary-light: #e0c06a;
  --secondary-dark: #a8882e;
  --accent: #f0a030;
  --bg: #f5f7fb;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #0a1a2e;
  --bg-section-alt: #edf1f7;
  --text: #1a2a3a;
  --text-light: #4a5a6a;
  --text-muted: #7a8a9a;
  --text-inverse: #f0f4f8;
  --border: #dce2ec;
  --border-light: #e8edf4;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(15, 43, 74, 0.06);
  --shadow: 0 6px 28px rgba(15, 43, 74, 0.08);
  --shadow-lg: 0 12px 48px rgba(15, 43, 74, 0.12);
  --shadow-glow: 0 0 30px rgba(201, 168, 76, 0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
  --max-width: 1200px;
  --header-top-height: 64px;
  --header-nav-height: 52px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
a:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 4px; }
button { font-family: inherit; cursor: pointer; border: none; background: none; transition: var(--transition); }
button:focus-visible { outline: 2px solid var(--secondary); outline-offset: 2px; border-radius: 6px; }
input, textarea { font-family: inherit; font-size: 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 10px 16px; background: var(--bg-white); transition: var(--transition); color: var(--text); }
input:focus, textarea:focus { outline: none; border-color: var(--secondary); box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15); }
input::placeholder, textarea::placeholder { color: var(--text-muted); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; color: var(--primary); font-weight: 700; }
h1 { font-size: 2.75rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.1rem; }
p { margin-bottom: 0.5rem; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-section-alt); }
.section-dark { background: var(--bg-dark); color: var(--text-inverse); }
.section-title { text-align: center; margin-bottom: 16px; font-size: 2rem; }
.section-subtitle { text-align: center; color: var(--text-light); font-size: 1.1rem; max-width: 680px; margin: 0 auto 48px; }
.section-dark .section-title { color: var(--text-inverse); }
.section-dark .section-subtitle { color: var(--text-muted); }
.tag { display: inline-block; padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; background: rgba(201, 168, 76, 0.12); color: var(--secondary-dark); letter-spacing: 0.3px; }
.tag-primary { background: rgba(15, 43, 74, 0.08); color: var(--primary); }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: 50px; font-size: 1rem; font-weight: 600;
  transition: var(--transition); cursor: pointer; border: none; line-height: 1.4;
}
.btn-primary { background: var(--secondary); color: var(--primary); }
.btn-primary:hover { background: var(--secondary-light); transform: translateY(-2px); box-shadow: var(--shadow-glow); }
.btn-primary:active { transform: translateY(0); }
.btn-outline { background: transparent; color: var(--text-inverse); border: 2px solid rgba(255,255,255,0.3); }
.btn-outline:hover { border-color: var(--secondary); color: var(--secondary); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-light { background: var(--bg-white); color: var(--primary); }
.btn-light:hover { background: var(--bg-section-alt); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-lg { padding: 16px 36px; font-size: 1.1rem; }
.card {
  background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow-sm); transition: var(--transition);
  border: 1px solid var(--border-light); overflow: hidden;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: var(--border); }
.card-body { padding: 24px; }
.badge {
  display: inline-flex; align-items: center; gap: 4px; padding: 2px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600;
  background: rgba(201, 168, 76, 0.12); color: var(--secondary-dark);
}
.badge-blue { background: rgba(15, 43, 74, 0.08); color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-light { color: var(--text-light); }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mt-4 { margin-top: 24px; }
.mt-5 { margin-top: 36px; }
.mb-3 { margin-bottom: 16px; }
.mb-4 { margin-bottom: 24px; }
.gap-3 { gap: 16px; }
.gap-4 { gap: 24px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.text-center { text-align: center; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.7rem; }
  .section { padding: 60px 0; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.4rem; }
  .section { padding: 48px 0; }
  .section-subtitle { font-size: 1rem; margin-bottom: 32px; }
  .container { padding: 0 16px; }
  .btn-lg { padding: 14px 28px; font-size: 1rem; }
}

/* ===== 双层导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: var(--bg-white); border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 12px rgba(15,43,74,0.04);
}
.header-top {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-top-height); padding: 0 24px;
  max-width: var(--max-width); margin: 0 auto;
}
.logo { font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: 0.5px; display: flex; align-items: center; gap: 8px; }
.logo i { color: var(--secondary); font-size: 1.2rem; }
.logo:hover { color: var(--primary-light); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.header-search { position: relative; }
.header-search input { width: 220px; padding: 8px 16px 8px 36px; border-radius: 50px; background: var(--bg); border-color: transparent; font-size: 0.9rem; }
.header-search input:focus { width: 260px; background: var(--bg-white); border-color: var(--secondary); }
.header-search i { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 0.9rem; }
.header-btn { padding: 8px 20px; border-radius: 50px; font-size: 0.9rem; font-weight: 600; background: var(--secondary); color: var(--primary); }
.header-btn:hover { background: var(--secondary-light); transform: translateY(-1px); box-shadow: var(--shadow-glow); }
.header-nav-wrapper { border-top: 1px solid var(--border-light); background: var(--bg-white); }
.header-nav { display: flex; align-items: center; height: var(--header-nav-height); max-width: var(--max-width); margin: 0 auto; padding: 0 24px; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.header-nav::-webkit-scrollbar { display: none; }
.nav-link { display: flex; align-items: center; gap: 6px; padding: 0 20px; height: var(--header-nav-height); font-size: 0.95rem; font-weight: 500; color: var(--text-light); white-space: nowrap; border-bottom: 3px solid transparent; transition: var(--transition); position: relative; }
.nav-link i { font-size: 0.85rem; color: var(--text-muted); }
.nav-link:hover { color: var(--primary); background: rgba(15,43,74,0.03); }
.nav-link.active { color: var(--primary); border-bottom-color: var(--secondary); font-weight: 600; }
.nav-link.active i { color: var(--secondary); }
.mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--primary); padding: 4px; cursor: pointer; }
@media (max-width: 768px) {
  .header-top { height: 56px; padding: 0 16px; }
  .header-search { display: none; }
  .header-btn { padding: 6px 16px; font-size: 0.85rem; }
  .logo { font-size: 1.15rem; }
  .mobile-toggle { display: block; }
  .header-nav-wrapper { position: relative; }
  .header-nav { display: none; flex-direction: column; height: auto; padding: 8px 16px 16px; position: absolute; top: 0; left: 0; right: 0; background: var(--bg-white); border-bottom: 2px solid var(--border-light); box-shadow: var(--shadow); z-index: 999; }
  .header-nav.open { display: flex; }
  .nav-link { padding: 12px 16px; height: auto; border-bottom: none; border-left: 3px solid transparent; }
  .nav-link.active { border-bottom: none; border-left-color: var(--secondary); background: rgba(201,168,76,0.06); }
  .header-nav-wrapper { border-top: none; }
}

/* ===== Hero ===== */
.hero {
  position: relative; padding: 100px 0 80px; background: linear-gradient(135deg, var(--primary) 0%, #1a3a5a 50%, #0f2b4a 100%);
  overflow: hidden; min-height: 520px; display: flex; align-items: center;
}
.hero::before { content: ''; position: absolute; top: -40%; right: -20%; width: 700px; height: 700px; background: radial-gradient(circle, rgba(201,168,76,0.08) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero::after { content: ''; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%); border-radius: 50%; pointer-events: none; }
.hero .container { position: relative; z-index: 2; }
.hero-content { max-width: 720px; }
.hero-tag { display: inline-block; padding: 6px 20px; border-radius: 50px; background: rgba(201,168,76,0.15); color: var(--secondary-light); font-size: 0.85rem; font-weight: 600; margin-bottom: 20px; letter-spacing: 0.5px; }
.hero h1 { color: var(--text-inverse); font-size: 3rem; line-height: 1.2; margin-bottom: 20px; font-weight: 800; }
.hero h1 span { color: var(--secondary); }
.hero p { color: rgba(255,255,255,0.75); font-size: 1.15rem; line-height: 1.7; max-width: 580px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.hero-stats { display: flex; gap: 40px; margin-top: 48px; padding-top: 32px; border-top: 1px solid rgba(255,255,255,0.1); }
.hero-stat { text-align: center; }
.hero-stat-number { font-size: 2rem; font-weight: 800; color: var(--secondary); }
.hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.6); margin-top: 4px; }
@media (max-width: 1024px) {
  .hero { padding: 80px 0 60px; min-height: auto; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
}
@media (max-width: 768px) {
  .hero { padding: 60px 0 48px; }
  .hero h1 { font-size: 1.7rem; }
  .hero p { font-size: 0.95rem; }
  .hero-stats { gap: 16px; margin-top: 32px; padding-top: 24px; }
  .hero-stat-number { font-size: 1.5rem; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}

/* ===== 核心介绍 ===== */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); background: var(--bg-section-alt); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; position: relative; }
.intro-image i { font-size: 5rem; color: var(--primary-lighter); opacity: 0.3; }
.intro-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,43,74,0.1), transparent); }
.intro-text h2 { margin-bottom: 16px; }
.intro-text p { color: var(--text-light); margin-bottom: 12px; }
.intro-features { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 24px; }
.intro-feature { display: flex; align-items: flex-start; gap: 12px; }
.intro-feature i { color: var(--secondary); font-size: 1.1rem; margin-top: 3px; flex-shrink: 0; }
.intro-feature span { font-size: 0.95rem; color: var(--text); }
@media (max-width: 768px) {
  .intro-grid { grid-template-columns: 1fr; gap: 28px; }
  .intro-features { grid-template-columns: 1fr; }
  .intro-image { aspect-ratio: 16/9; }
}

/* ===== 分类入口 ===== */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-card { background: var(--bg-card); border-radius: var(--radius); padding: 32px 24px; text-align: center; border: 1px solid var(--border-light); transition: var(--transition); position: relative; overflow: hidden; }
.category-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--secondary); transform: scaleX(0); transform-origin: left; transition: var(--transition); }
.category-card:hover::before { transform: scaleX(1); }
.category-card:hover { box-shadow: var(--shadow); transform: translateY(-6px); border-color: var(--border); }
.category-icon { width: 64px; height: 64px; border-radius: 16px; background: rgba(201,168,76,0.1); display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 1.6rem; color: var(--secondary); transition: var(--transition); }
.category-card:hover .category-icon { background: var(--secondary); color: var(--bg-white); }
.category-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.category-card p { font-size: 0.9rem; color: var(--text-light); margin-bottom: 16px; }
.category-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 0.9rem; color: var(--primary-light); }
.category-link i { transition: var(--transition); }
.category-link:hover i { transform: translateX(4px); }
@media (max-width: 768px) {
  .category-grid { grid-template-columns: 1fr; gap: 20px; }
}

/* ===== 最新资讯 (CMS) ===== */
.news-list { display: grid; grid-template-columns: 1fr; gap: 16px; max-width: 880px; margin: 0 auto; }
.news-item { display: flex; align-items: flex-start; gap: 16px; padding: 20px 24px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-light); transition: var(--transition); }
.news-item:hover { box-shadow: var(--shadow); transform: translateX(4px); border-color: var(--border); }
.news-item .badge { flex-shrink: 0; }
.news-item-content { flex: 1; min-width: 0; }
.news-item-title { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 4px; display: block; }
.news-item-title:hover { color: var(--primary-light); }
.news-item-meta { font-size: 0.8rem; color: var(--text-muted); display: flex; align-items: center; gap: 12px; margin-top: 4px; }
.news-item-meta i { font-size: 0.75rem; }
.news-empty { text-align: center; padding: 48px 24px; color: var(--text-muted); background: var(--bg-card); border-radius: var(--radius); border: 1px dashed var(--border); }
.news-empty i { font-size: 2.5rem; color: var(--border); margin-bottom: 12px; display: block; }
@media (max-width: 768px) {
  .news-item { flex-direction: column; gap: 8px; padding: 16px; }
}

/* ===== 服务特色 ===== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { text-align: center; padding: 32px 16px; }
.feature-icon { width: 56px; height: 56px; border-radius: 16px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--bg-white); }
.feature-icon.blue { background: var(--primary); }
.feature-icon.gold { background: var(--secondary); }
.feature-icon.teal { background: #0f766e; }
.feature-icon.coral { background: #b91c1c; }
.feature-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.85rem; color: var(--text-light); }
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ===== 使用流程 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.step { text-align: center; position: relative; }
.step-number { width: 48px; height: 48px; border-radius: 50%; background: var(--secondary); color: var(--primary); font-weight: 800; font-size: 1.2rem; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; position: relative; z-index: 2; }
.step h4 { font-size: 1.05rem; margin-bottom: 8px; }
.step p { font-size: 0.85rem; color: var(--text-light); max-width: 200px; margin: 0 auto; }
.step-connector { display: none; }
@media (min-width: 1024px) {
  .step:not(:last-child)::after { content: ''; position: absolute; top: 24px; left: calc(50% + 36px); width: calc(100% - 72px); height: 2px; background: linear-gradient(90deg, var(--secondary), var(--border)); z-index: 0; }
}
@media (max-width: 768px) {
  .steps { grid-template-columns: 1fr 1fr; gap: 28px 16px; }
  .step:not(:last-child)::after { display: none; }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-light); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--border); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; cursor: pointer; font-weight: 600; color: var(--text); font-size: 1rem; background: none; width: 100%; text-align: left; gap: 12px; }
.faq-question i { color: var(--secondary); transition: var(--transition); flex-shrink: 0; font-size: 0.9rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer { padding: 0 24px; max-height: 0; overflow: hidden; transition: var(--transition); color: var(--text-light); font-size: 0.95rem; line-height: 1.7; }
.faq-item.active .faq-answer { padding: 0 24px 20px; max-height: 300px; }
@media (max-width: 768px) {
  .faq-question { padding: 14px 16px; font-size: 0.95rem; }
  .faq-answer { padding: 0 16px; font-size: 0.9rem; }
  .faq-item.active .faq-answer { padding: 0 16px 16px; }
}

/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--primary) 0%, #1a3a5a 70%, #0f2b4a 100%); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: 0; right: 0; width: 400px; height: 100%; background: radial-gradient(circle at center, rgba(201,168,76,0.06) 0%, transparent 70%); pointer-events: none; }
.cta-content { text-align: center; position: relative; z-index: 2; }
.cta-content h2 { color: var(--text-inverse); font-size: 2rem; margin-bottom: 16px; }
.cta-content p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 600px; margin: 0 auto 32px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
@media (max-width: 768px) {
  .cta-content h2 { font-size: 1.5rem; }
  .cta-content p { font-size: 0.95rem; }
  .cta-actions { flex-direction: column; align-items: center; }
}

/* ===== 页脚 ===== */
.site-footer { background: var(--bg-dark); color: var(--text-inverse); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.footer-brand .logo { color: var(--text-inverse); margin-bottom: 12px; }
.footer-brand p { color: rgba(255,255,255,0.55); font-size: 0.9rem; max-width: 300px; line-height: 1.7; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a { width: 38px; height: 38px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 0.9rem; transition: var(--transition); }
.footer-social a:hover { background: var(--secondary); color: var(--primary); transform: translateY(-2px); }
.footer-col h4 { color: var(--text-inverse); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; }
.footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
.footer-bottom { padding: 20px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: rgba(255,255,255,0.4); }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--secondary); }
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .site-footer { padding: 40px 0 0; }
}

/* ===== 动画辅助 ===== */
.fade-in { opacity: 0; transform: translateY(20px); animation: fadeIn 0.6s ease forwards; }
@keyframes fadeIn { to { opacity: 1; transform: translateY(0); } }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

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

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
  --primary: #0b3d6b;
  --primary-light: #125a9a;
  --primary-dark: #072a4a;
  --secondary: #e8913a;
  --secondary-light: #f0a85c;
  --secondary-dark: #c97a2a;
  --accent: #1fa89b;
  --bg-body: #f5f7fa;
  --bg-white: #ffffff;
  --bg-card: #ffffff;
  --bg-dark: #0a1a2e;
  --text-primary: #1a2332;
  --text-secondary: #3d4a5c;
  --text-muted: #7a8799;
  --text-inverse: #f0f4f8;
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.14);
  --transition: 0.25s cubic-bezier(0.4,0,0.2,1);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --container-max: 1200px;
  --header-h: 72px;
  --nav-h: 52px;
  --spacing-section: 5rem;
  --spacing-block: 3rem;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-sans);color:var(--text-primary);background:var(--bg-body);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--secondary)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,.btn{cursor:pointer;font-family:inherit;border:none;background:none;transition:all var(--transition)}
input,textarea{font-family:inherit;border:1px solid var(--border-medium);border-radius:var(--radius-sm);padding:0.65rem 1rem;font-size:0.95rem;transition:border var(--transition);background:var(--bg-white);color:var(--text-primary)}
input:focus,textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,61,107,0.15)}
h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text-primary);letter-spacing:-0.01em}
p{margin-bottom:1rem;color:var(--text-secondary)}
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}
.section{padding:var(--spacing-section) 0}
.section-title{font-size:2.2rem;margin-bottom:0.75rem;text-align:center}
.section-subtitle{font-size:1.1rem;color:var(--text-muted);text-align:center;max-width:680px;margin:0 auto 3rem auto;line-height:1.6}
/* ===== Header / Top Bar ===== */
.site-header{background:var(--bg-white);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}
.header-top{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);padding:0 1.5rem;max-width:var(--container-max);margin:0 auto}
.logo{display:flex;align-items:center;gap:0.6rem;font-size:1.5rem;font-weight:800;color:var(--primary);letter-spacing:-0.02em}
.logo i{font-size:1.8rem;color:var(--secondary)}
.logo:hover{color:var(--primary-light)}
.header-actions{display:flex;align-items:center;gap:1rem}
.search-box{display:flex;align-items:center;background:var(--bg-body);border-radius:var(--radius-xl);padding:0.35rem 0.35rem 0.35rem 1.2rem;border:1px solid var(--border-light);transition:all var(--transition)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 3px rgba(11,61,107,0.10);background:var(--bg-white)}
.search-box input{border:none;background:transparent;padding:0.4rem 0.6rem;font-size:0.9rem;width:160px;color:var(--text-primary)}
.search-box input::placeholder{color:var(--text-muted)}
.search-box input:focus{box-shadow:none}
.search-box button{background:var(--primary);color:#fff;border-radius:var(--radius-xl);padding:0.45rem 1rem;font-size:0.85rem;font-weight:600;display:flex;align-items:center;gap:0.35rem}
.search-box button:hover{background:var(--primary-light);transform:scale(1.02)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none}
.hamburger span{display:block;width:26px;height:2.5px;background:var(--text-primary);border-radius:3px;transition:all var(--transition)}
/* ===== Navigation ===== */
.header-nav{background:var(--primary);padding:0 1.5rem;position:relative;z-index:99}
.header-nav .nav-inner{display:flex;align-items:center;gap:0.25rem;max-width:var(--container-max);margin:0 auto;height:var(--nav-h);overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
.header-nav .nav-inner::-webkit-scrollbar{display:none}
.nav-link{display:flex;align-items:center;gap:0.5rem;padding:0.5rem 1.2rem;border-radius:var(--radius-sm);color:rgba(255,255,255,0.8);font-size:0.92rem;font-weight:500;white-space:nowrap;transition:all var(--transition);position:relative}
.nav-link i{font-size:0.9rem;opacity:0.75}
.nav-link:hover{color:#fff;background:rgba(255,255,255,0.12)}
.nav-link.active{color:#fff;background:rgba(255,255,255,0.18);font-weight:600}
.nav-link.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60%;height:3px;background:var(--secondary);border-radius:3px 3px 0 0}
/* ===== Breadcrumb ===== */
.breadcrumb{padding:1.2rem 0 0.5rem 0;font-size:0.9rem;color:var(--text-muted);background:transparent}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 0.4rem;color:var(--border-medium)}
.breadcrumb .current{color:var(--text-primary);font-weight:500}
/* ===== Article Main ===== */
.article-wrapper{display:grid;grid-template-columns:1fr 320px;gap:2.5rem;padding-top:1rem}
.article-main{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:2.5rem 2.8rem;border:1px solid var(--border-light)}
.article-header{margin-bottom:2rem;padding-bottom:1.8rem;border-bottom:1px solid var(--border-light)}
.article-category{display:inline-flex;align-items:center;gap:0.4rem;background:var(--secondary);color:#fff;padding:0.25rem 1rem;border-radius:var(--radius-xl);font-size:0.8rem;font-weight:600;margin-bottom:1rem;text-transform:uppercase;letter-spacing:0.3px}
.article-title{font-size:2rem;font-weight:800;line-height:1.35;margin-bottom:1.2rem;color:var(--text-primary)}
.article-meta{display:flex;flex-wrap:wrap;gap:1.2rem;font-size:0.88rem;color:var(--text-muted)}
.article-meta span{display:flex;align-items:center;gap:0.4rem}
.article-meta i{font-size:0.85rem;color:var(--primary-light)}
.article-body{font-size:1.05rem;line-height:1.85;color:var(--text-secondary)}
.article-body p{margin-bottom:1.5rem}
.article-body h2,.article-body h3{margin-top:2rem;margin-bottom:1rem;color:var(--text-primary)}
.article-body img{border-radius:var(--radius-md);margin:1.5rem 0;box-shadow:var(--shadow-sm)}
.article-body ul,.article-body ol{padding-left:1.5rem;margin-bottom:1.5rem}
.article-body li{margin-bottom:0.5rem}
.article-body blockquote{border-left:4px solid var(--secondary);background:var(--bg-body);padding:1rem 1.5rem;margin:1.5rem 0;border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-secondary);font-style:italic}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:2px}
.article-body a:hover{color:var(--secondary)}
/* ===== Article Sidebar ===== */
.article-sidebar{display:flex;flex-direction:column;gap:1.5rem}
.sidebar-card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.5rem 1.8rem;border:1px solid var(--border-light)}
.sidebar-card h3{font-size:1.15rem;font-weight:700;margin-bottom:1rem;padding-bottom:0.6rem;border-bottom:2px solid var(--secondary);display:inline-block}
.sidebar-list{display:flex;flex-direction:column;gap:0.6rem}
.sidebar-list li{display:flex;gap:0.75rem;align-items:flex-start}
.sidebar-list li i{color:var(--secondary);font-size:0.8rem;margin-top:0.35rem;flex-shrink:0}
.sidebar-list li a{color:var(--text-secondary);font-size:0.92rem;line-height:1.4;transition:color var(--transition)}
.sidebar-list li a:hover{color:var(--primary)}
.sidebar-tags{display:flex;flex-wrap:wrap;gap:0.5rem}
.sidebar-tags a{background:var(--bg-body);color:var(--text-secondary);padding:0.3rem 0.9rem;border-radius:var(--radius-xl);font-size:0.82rem;font-weight:500;transition:all var(--transition);border:1px solid var(--border-light)}
.sidebar-tags a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.sidebar-cta{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:var(--text-inverse);border-radius:var(--radius-lg);padding:1.8rem;text-align:center;border:none}
.sidebar-cta h4{color:#fff;font-size:1.1rem;margin-bottom:0.6rem}
.sidebar-cta p{color:rgba(255,255,255,0.75);font-size:0.9rem;margin-bottom:1.2rem}
.sidebar-cta .btn{background:var(--secondary);color:#fff;padding:0.6rem 1.6rem;border-radius:var(--radius-xl);font-weight:600;font-size:0.9rem}
.sidebar-cta .btn:hover{background:var(--secondary-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}
/* ===== Tags & Share ===== */
.article-footer-bar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border-light);gap:1rem}
.article-tags{display:flex;flex-wrap:wrap;gap:0.5rem}
.article-tags .tag{background:var(--bg-body);color:var(--text-secondary);padding:0.3rem 1rem;border-radius:var(--radius-xl);font-size:0.82rem;font-weight:500;border:1px solid var(--border-light);transition:all var(--transition)}
.article-tags .tag:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.share-buttons{display:flex;gap:0.5rem}
.share-buttons a{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--bg-body);color:var(--text-secondary);font-size:1rem;transition:all var(--transition);border:1px solid var(--border-light)}
.share-buttons a:hover{background:var(--primary);color:#fff;border-color:var(--primary);transform:translateY(-2px)}
/* ===== Related Articles ===== */
.related-section{padding:var(--spacing-block) 0}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.5rem;margin-top:2rem}
.related-card{background:var(--bg-card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--border-light);overflow:hidden;transition:all var(--transition)}
.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.related-card .card-body{padding:1.2rem 1.5rem 1.5rem}
.related-card .card-cat{font-size:0.75rem;color:var(--secondary);font-weight:600;text-transform:uppercase;letter-spacing:0.5px;margin-bottom:0.4rem}
.related-card h4{font-size:1.05rem;font-weight:700;margin-bottom:0.4rem;line-height:1.4}
.related-card h4 a{color:var(--text-primary)}
.related-card h4 a:hover{color:var(--primary)}
.related-card .card-excerpt{font-size:0.88rem;color:var(--text-muted);line-height:1.5;margin-bottom:0.6rem}
.related-card .card-meta{font-size:0.8rem;color:var(--text-muted);display:flex;gap:0.8rem}
/* ===== CTA Section ===== */
.cta-section{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:var(--radius-lg);padding:3.5rem 3rem;text-align:center;margin:var(--spacing-block) 0;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(232,145,58,0.12) 0%,transparent 60%);pointer-events:none}
.cta-section h2{color:#fff;font-size:2rem;margin-bottom:0.8rem;position:relative}
.cta-section p{color:rgba(255,255,255,0.8);font-size:1.1rem;max-width:600px;margin:0 auto 1.8rem auto;position:relative}
.cta-section .btn-group{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;position:relative}
.cta-section .btn-primary{background:var(--secondary);color:#fff;padding:0.8rem 2.4rem;border-radius:var(--radius-xl);font-weight:700;font-size:1rem;box-shadow:0 4px 16px rgba(232,145,58,0.35)}
.cta-section .btn-primary:hover{background:var(--secondary-light);transform:translateY(-2px);box-shadow:0 8px 28px rgba(232,145,58,0.45)}
.cta-section .btn-outline{background:transparent;color:#fff;padding:0.8rem 2.4rem;border-radius:var(--radius-xl);font-weight:600;font-size:1rem;border:2px solid rgba(255,255,255,0.35)}
.cta-section .btn-outline:hover{background:rgba(255,255,255,0.1);border-color:rgba(255,255,255,0.7)}
/* ===== Not Found ===== */
.not-found-box{text-align:center;padding:4rem 2rem;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}
.not-found-box i{font-size:3.5rem;color:var(--text-muted);margin-bottom:1rem;display:block}
.not-found-box h2{font-size:1.8rem;margin-bottom:0.8rem}
.not-found-box p{color:var(--text-muted);margin-bottom:1.5rem}
.not-found-box .btn{display:inline-flex;align-items:center;gap:0.5rem;background:var(--primary);color:#fff;padding:0.7rem 2rem;border-radius:var(--radius-xl);font-weight:600}
.not-found-box .btn:hover{background:var(--primary-light);transform:translateY(-2px)}
/* ===== Footer ===== */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,0.7);padding:4rem 0 0 0;margin-top:var(--spacing-section)}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2.5rem}
.footer-brand .logo{color:#fff;font-size:1.4rem;margin-bottom:1rem;display:inline-flex}
.footer-brand .logo i{color:var(--secondary)}
.footer-brand p{font-size:0.92rem;color:rgba(255,255,255,0.55);line-height:1.7;margin-bottom:1.2rem}
.footer-social{display:flex;gap:0.75rem}
.footer-social a{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.6);font-size:1.1rem;transition:all var(--transition)}
.footer-social a:hover{background:var(--secondary);color:#fff;transform:translateY(-3px)}
.footer-col h4{color:#fff;font-size:1rem;font-weight:700;margin-bottom:1.2rem;position:relative;padding-bottom:0.6rem}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:32px;height:2.5px;background:var(--secondary);border-radius:3px}
.footer-col ul{display:flex;flex-direction:column;gap:0.6rem}
.footer-col ul li a{color:rgba(255,255,255,0.55);font-size:0.9rem;display:flex;align-items:center;gap:0.5rem;transition:all var(--transition)}
.footer-col ul li a:hover{color:var(--secondary);transform:translateX(3px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:1.5rem 0;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;font-size:0.85rem;color:rgba(255,255,255,0.4);gap:0.8rem}
.footer-bottom a{color:rgba(255,255,255,0.5)}
.footer-bottom a:hover{color:var(--secondary)}
/* ===== Responsive ===== */
@media (max-width: 1024px){
  .article-wrapper{grid-template-columns:1fr}
  .article-sidebar{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
  .footer-grid{grid-template-columns:1fr 1fr;gap:2rem}
}
@media (max-width: 768px){
  :root{--header-h:60px;--nav-h:auto;--spacing-section:3rem;--spacing-block:2rem}
  .header-top{padding:0 1rem}
  .search-box input{width:100px}
  .hamburger{display:flex}
  .header-nav .nav-inner{flex-wrap:nowrap;padding:0.5rem 0;height:auto;gap:0.2rem;overflow-x:auto}
  .nav-link{padding:0.4rem 0.9rem;font-size:0.82rem}
  .nav-link i{font-size:0.75rem}
  .section-title{font-size:1.6rem}
  .section-subtitle{font-size:0.95rem;margin-bottom:2rem}
  .article-main{padding:1.5rem}
  .article-title{font-size:1.5rem}
  .article-body{font-size:0.98rem}
  .article-sidebar{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:1.8rem}
  .footer-bottom{flex-direction:column;text-align:center}
  .cta-section{padding:2.5rem 1.5rem}
  .cta-section h2{font-size:1.5rem}
  .related-grid{grid-template-columns:1fr 1fr}
  .header-actions .search-box{display:none}
  .mobile-search{display:block}
}
@media (max-width: 520px){
  .container{padding:0 1rem}
  .header-top{padding:0 0.75rem}
  .logo{font-size:1.2rem}
  .nav-link{padding:0.35rem 0.7rem;font-size:0.78rem;gap:0.3rem}
  .article-main{padding:1rem 1.2rem}
  .article-title{font-size:1.25rem}
  .article-meta{flex-direction:column;gap:0.5rem}
  .related-grid{grid-template-columns:1fr}
  .cta-section .btn-group{flex-direction:column;align-items:center}
  .footer-grid{gap:1.5rem}
}
@media (max-width: 400px){
  .nav-link{padding:0.3rem 0.5rem;font-size:0.72rem}
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f6cbf;
            --primary-dark: #0a4f8a;
            --primary-light: #e8f0fe;
            --primary-gradient: linear-gradient(135deg, #0f6cbf 0%, #1a8fe0 100%);
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --accent-gradient: linear-gradient(135deg, #f59e0b 0%, #f97316 100%);
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-section-alt: #f1f5f9;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1), 0 4px 16px rgba(0, 0, 0, 0.06);
            --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.12);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --nav-height: 52px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: calc(var(--header-height) + var(--nav-height));
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

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

        /* ===== Header 双层导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-white);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
            border-bottom: 1px solid var(--border-color);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            transition: opacity var(--transition);
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--text-primary);
        }
        .logo i {
            font-size: 28px;
            color: var(--primary);
            background: var(--primary-light);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: transform var(--transition);
        }
        .logo:hover i {
            transform: rotate(-8deg) scale(1.05);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-section-alt);
            border-radius: 50px;
            padding: 0 16px;
            border: 1px solid transparent;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 108, 191, 0.12);
            background: var(--bg-white);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 8px 10px 8px 0;
            font-size: 14px;
            color: var(--text-primary);
            outline: none;
            width: 180px;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search button {
            color: var(--text-muted);
            font-size: 15px;
            padding: 6px 0 6px 8px;
            transition: color var(--transition);
        }
        .header-search button:hover {
            color: var(--primary);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--primary-gradient);
            color: var(--text-white);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 2px 8px rgba(15, 108, 191, 0.25);
        }
        .header-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(15, 108, 191, 0.35);
            color: var(--text-white);
        }

        .menu-toggle {
            display: none;
            font-size: 22px;
            color: var(--text-primary);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-section-alt);
        }

        /* 导航频道行 */
        .header-nav-wrap {
            border-top: 1px solid var(--border-color);
            background: var(--bg-white);
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav-wrap::-webkit-scrollbar {
            display: none;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: var(--nav-height);
        }

        .header-nav .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 50px;
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .header-nav .nav-link i {
            font-size: 13px;
        }
        .header-nav .nav-link:hover {
            background: var(--bg-section-alt);
            color: var(--text-primary);
        }
        .header-nav .nav-link.active {
            background: var(--primary-gradient);
            color: var(--text-white);
            box-shadow: 0 2px 10px rgba(15, 108, 191, 0.25);
        }
        .header-nav .nav-link.active:hover {
            color: var(--text-white);
        }

        /* ===== 移动端菜单 ===== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.45);
            z-index: 999;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .mobile-menu-overlay.open {
            opacity: 1;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: 300px;
            max-width: 80vw;
            background: var(--bg-white);
            z-index: 1001;
            transform: translateX(-100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            box-shadow: var(--shadow-xl);
            padding: 24px 20px;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border-color);
        }
        .mobile-drawer .drawer-header .logo {
            font-size: 18px;
        }
        .mobile-drawer .drawer-close {
            font-size: 22px;
            color: var(--text-secondary);
            padding: 8px;
            border-radius: var(--radius-sm);
        }
        .mobile-drawer .drawer-close:hover {
            background: var(--bg-section-alt);
        }
        .mobile-drawer .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .mobile-drawer .drawer-nav a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-primary);
            border-radius: var(--radius-md);
            transition: background var(--transition);
        }
        .mobile-drawer .drawer-nav a i {
            width: 22px;
            color: var(--primary);
            font-size: 16px;
        }
        .mobile-drawer .drawer-nav a:hover {
            background: var(--bg-section-alt);
        }
        .mobile-drawer .drawer-nav a.active {
            background: var(--primary-light);
            color: var(--primary);
        }
        .mobile-drawer .drawer-cta {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid var(--border-color);
        }
        .mobile-drawer .drawer-cta a {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px;
            background: var(--primary-gradient);
            color: var(--text-white);
            border-radius: var(--radius-md);
            font-weight: 600;
        }
        .mobile-drawer .drawer-cta a:hover {
            color: var(--text-white);
            opacity: 0.92;
        }

        /* ===== 页面标题区 ===== */
        .page-hero {
            background: var(--primary-gradient);
            padding: 52px 0 48px;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 350px;
            height: 350px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }
        .page-hero h1 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            line-height: 1.2;
        }
        .page-hero h1 i {
            margin-right: 10px;
            opacity: 0.85;
        }
        .page-hero p {
            font-size: 17px;
            opacity: 0.9;
            max-width: 680px;
            line-height: 1.7;
        }
        .page-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            opacity: 0.8;
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb a {
            color: var(--text-white);
            opacity: 0.85;
        }
        .page-hero .breadcrumb a:hover {
            opacity: 1;
            color: var(--text-white);
        }
        .page-hero .breadcrumb span {
            opacity: 0.7;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 60px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 分类导航卡片 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
            text-align: center;
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .category-card .icon-wrap {
            width: 60px;
            height: 60px;
            margin: 0 auto 18px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            transition: transform var(--transition), background var(--transition);
        }
        .category-card:hover .icon-wrap {
            transform: scale(1.08);
            background: var(--primary);
            color: var(--text-white);
        }
        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .category-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }
        .category-card .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 50px;
        }

        /* ===== 入口列表（图文） ===== */
        .entry-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .entry-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
            align-items: flex-start;
        }
        .entry-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .entry-item .entry-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
        }
        .entry-item .entry-body {
            flex: 1;
            min-width: 0;
        }
        .entry-item .entry-body h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .entry-item .entry-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .entry-item .entry-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .entry-item .entry-meta .badge {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: #dcfce7;
            color: #166534;
        }
        .entry-item .entry-meta .badge.warn {
            background: #fef3c7;
            color: #92400e;
        }
        .entry-item .entry-meta .badge.info {
            background: #dbeafe;
            color: #1e40af;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .step-card {
            text-align: center;
            position: relative;
            padding: 24px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-num {
            width: 44px;
            height: 44px;
            margin: 0 auto 16px;
            background: var(--primary-gradient);
            color: var(--text-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 4px 12px rgba(15, 108, 191, 0.25);
        }
        .step-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .step-card::after {
            content: '→';
            position: absolute;
            right: -16px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            color: var(--text-muted);
            font-weight: 300;
        }
        .step-card:last-child::after {
            display: none;
        }

        /* ===== 安全提示 ===== */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .safety-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border: 1px solid var(--border-color);
            transition: transform var(--transition), box-shadow var(--transition);
            text-align: center;
        }
        .safety-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .safety-card .safety-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .safety-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .safety-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: background var(--transition);
            gap: 12px;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            background: var(--bg-section-alt);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            padding: 56px 0;
            text-align: center;
            color: var(--text-white);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            left: -20%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 17px;
            opacity: 0.9;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .cta-btn.primary {
            background: var(--bg-white);
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
        }
        .cta-btn.primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
            color: var(--primary);
        }
        .cta-btn.outline-light {
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: var(--text-white);
        }
        .cta-btn.outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.8);
            color: var(--text-white);
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            color: var(--text-white);
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand .logo i {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-white);
        }
        .footer-brand .logo:hover {
            color: var(--text-white);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 18px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            color: rgba(255, 255, 255, 0.7);
            font-size: 16px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--text-white);
        }
        .footer-col ul li a i {
            font-size: 13px;
            color: var(--primary);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--text-white);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-card::after {
                display: none;
            }
            .safety-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 820px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .entry-list {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: var(--header-height);
            }
            .header-top {
                height: var(--header-height);
                padding: 0 16px;
            }
            .header-nav-wrap {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .header-search input {
                width: 120px;
            }
            .header-cta span {
                display: none;
            }
            .header-cta {
                padding: 8px 14px;
            }
            .page-hero {
                padding: 36px 0 32px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .page-hero p {
                font-size: 15px;
            }
            .section {
                padding: 40px 0;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-card {
                padding: 20px 16px;
            }
            .category-card .icon-wrap {
                width: 48px;
                height: 48px;
                font-size: 20px;
                margin-bottom: 14px;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .safety-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
            .entry-item {
                flex-direction: column;
                padding: 18px;
            }
            .entry-item .entry-icon {
                width: 40px;
                height: 40px;
                font-size: 18px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .page-hero h1 {
                font-size: 20px;
            }
            .header-search input {
                width: 80px;
                font-size: 13px;
            }
            .header-cta {
                font-size: 13px;
                padding: 6px 12px;
            }
            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
            .cta-btn {
                width: 100%;
                justify-content: center;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 13px;
            }
            .section {
                padding: 32px 0;
            }
            .footer-grid {
                gap: 20px;
            }
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f6cbf;
            --primary-light: #3b8fdf;
            --primary-dark: #0a4d8a;
            --primary-bg: #eef6fe;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #10b981;
            --accent-light: #d1fae5;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-dark-card: #1e293b;
            --text-primary: #0f172a;
            --text-body: #334155;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --text-white: #f1f5f9;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
            --shadow: 0 4px 16px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.12), 0 4px 12px rgba(15, 23, 42, 0.06);
            --shadow-xl: 0 24px 60px rgba(15, 23, 42, 0.16);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --header-h: 120px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            background: none;
        }
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }
        ul {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== Typography ===== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-primary);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
        }
        .section-title {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-sub {
                font-size: 0.95rem;
            }
        }

        /* ===== Header / 双层导航 ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 1px 0 var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
        }
        .header-top .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.03em;
            flex-shrink: 0;
        }
        .header-top .logo i {
            font-size: 1.8rem;
            color: var(--secondary);
        }
        .header-top .logo:hover {
            color: var(--primary-dark);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 0 16px;
            transition: border var(--transition), box-shadow var(--transition);
            max-width: 280px;
            width: 100%;
        }
        .header-search:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(15, 108, 191, 0.1);
        }
        .header-search input {
            background: transparent;
            padding: 8px 8px 8px 0;
            font-size: 0.9rem;
            color: var(--text-primary);
            width: 100%;
            min-width: 0;
        }
        .header-search input::placeholder {
            color: var(--text-light);
        }
        .header-search button {
            color: var(--text-muted);
            padding: 8px 4px;
            font-size: 0.95rem;
            transition: color var(--transition);
            flex-shrink: 0;
        }
        .header-search button:hover {
            color: var(--primary);
        }
        .header-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }
        .header-cta i {
            font-size: 0.8rem;
        }

        /* 第二层：频道 Tabs */
        .header-nav-wrap {
            border-top: 1px solid var(--border);
            background: var(--bg-white);
            overflow: hidden;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 8px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .header-nav .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
            white-space: nowrap;
            transition: background var(--transition), color var(--transition);
            flex-shrink: 0;
        }
        .header-nav .nav-link i {
            font-size: 0.8rem;
        }
        .header-nav .nav-link:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .header-nav .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(15, 108, 191, 0.25);
        }
        .header-nav .nav-link.active:hover {
            background: var(--primary-dark);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            padding: 8px 12px;
            font-size: 1.3rem;
            color: var(--text-primary);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: var(--bg-white);
            transition: background var(--transition);
        }
        .menu-toggle:hover {
            background: var(--bg-body);
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 100px;
            }
            .header-top {
                padding: 8px 0;
            }
            .header-top .logo {
                font-size: 1.2rem;
            }
            .header-top .logo i {
                font-size: 1.4rem;
            }
            .header-search {
                max-width: 160px;
            }
            .header-search input {
                font-size: 0.8rem;
            }
            .header-cta span {
                display: none;
            }
            .header-cta {
                padding: 8px 14px;
            }
            .menu-toggle {
                display: block;
            }
            .header-nav-wrap {
                display: none;
                border-top: none;
                padding-bottom: 12px;
            }
            .header-nav-wrap.open {
                display: block;
            }
            .header-nav {
                flex-wrap: wrap;
                gap: 6px;
                padding: 4px 0;
            }
            .header-nav .nav-link {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .header-search {
                max-width: 120px;
            }
            .header-search input {
                font-size: 0.75rem;
            }
            .header-cta {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .header-cta i {
                font-size: 0.7rem;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, #0a4d8a 0%, #0f6cbf 50%, #1a8cdb 100%);
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .page-hero h1 {
            color: #fff;
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.03em;
            margin-bottom: 16px;
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .hero-badges span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        @media (max-width: 768px) {
            .page-hero {
                padding: 40px 0 36px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero p {
                font-size: 0.95rem;
            }
            .hero-badges span {
                font-size: 0.75rem;
                padding: 4px 14px;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
            font-size: 0.85rem;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--text-muted);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar span {
            color: var(--text-light);
        }
        .breadcrumb-bar .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* ===== 分类介绍 ===== */
        .section-intro {
            padding: 60px 0 40px;
            background: var(--bg-white);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-content h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .intro-content p {
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }
        .intro-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            margin-top: 24px;
        }
        .intro-stat {
            background: var(--primary-bg);
            border-radius: var(--radius);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid rgba(15, 108, 191, 0.08);
        }
        .intro-stat .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1.2;
        }
        .intro-stat .label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }
        .intro-illustration {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .intro-illustration img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
        }
        .intro-illustration .placeholder-graphic {
            width: 100%;
            max-width: 480px;
            aspect-ratio: 4/3;
            background: linear-gradient(135deg, var(--primary-bg), #dbeafe);
            border-radius: var(--radius-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 4rem;
            color: var(--primary-light);
            border: 1px solid rgba(15, 108, 191, 0.1);
        }
        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .intro-content h2 {
                font-size: 1.4rem;
            }
            .intro-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            .intro-stat .num {
                font-size: 1.5rem;
            }
            .section-intro {
                padding: 40px 0 24px;
            }
        }
        @media (max-width: 520px) {
            .intro-stats {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .intro-stat {
                padding: 12px 8px;
            }
            .intro-stat .num {
                font-size: 1.3rem;
            }
        }

        /* ===== 资源分类卡片 ===== */
        .section-categories {
            padding: 60px 0;
            background: var(--bg-body);
        }
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .cat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .cat-card .icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 16px;
            color: #fff;
        }
        .cat-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .cat-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cat-card .tag-group {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .cat-card .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg-body);
            color: var(--text-muted);
            border: 1px solid var(--border);
            transition: background var(--transition), color var(--transition);
        }
        .cat-card .tag:hover {
            background: var(--primary-bg);
            color: var(--primary);
            border-color: var(--primary-light);
        }
        @media (max-width: 768px) {
            .cat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .section-categories {
                padding: 40px 0;
            }
            .cat-card {
                padding: 20px 16px;
            }
            .cat-card .icon {
                width: 44px;
                height: 44px;
                font-size: 1.3rem;
            }
            .cat-card h3 {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .cat-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 精选资源列表 ===== */
        .section-resources {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .resource-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 36px;
        }
        .resource-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 20px;
            background: var(--bg-body);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .resource-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .resource-item .r-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--primary-bg);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .resource-item .r-info {
            flex: 1;
            min-width: 0;
        }
        .resource-item .r-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .resource-item .r-info p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .resource-item .r-link {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 6px 12px;
            border-radius: 50px;
            transition: background var(--transition);
        }
        .resource-item .r-link:hover {
            background: var(--primary-bg);
        }
        @media (max-width: 768px) {
            .resource-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .section-resources {
                padding: 40px 0;
            }
            .resource-item {
                padding: 14px 16px;
            }
        }
        @media (max-width: 520px) {
            .resource-item {
                flex-wrap: wrap;
            }
            .resource-item .r-link {
                width: 100%;
                justify-content: center;
                padding: 8px 12px;
                background: var(--primary-bg);
                border-radius: var(--radius-sm);
            }
        }

        /* ===== 使用指南流程 ===== */
        .section-guide {
            padding: 60px 0;
            background: var(--bg-body);
        }
        .guide-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 36px;
            position: relative;
        }
        .guide-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 12%;
            right: 12%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
            z-index: 0;
        }
        .guide-step {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 20px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            position: relative;
            z-index: 1;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .guide-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .guide-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            margin: 0 auto 14px;
            box-shadow: 0 4px 12px rgba(15, 108, 191, 0.25);
        }
        .guide-step h4 {
            font-size: 1rem;
            margin-bottom: 8px;
        }
        .guide-step p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .guide-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .guide-steps::before {
                display: none;
            }
            .section-guide {
                padding: 40px 0;
            }
            .guide-step {
                padding: 20px 16px;
            }
        }
        @media (max-width: 520px) {
            .guide-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 资讯列表 ===== */
        .section-news {
            padding: 60px 0;
            background: var(--bg-white);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 36px;
        }
        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .news-card .thumb {
            aspect-ratio: 16/10;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.4rem;
            color: var(--primary-light);
            position: relative;
        }
        .news-card .thumb .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: #fff;
            padding: 2px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 600;
        }
        .news-card .body {
            padding: 20px 20px 24px;
        }
        .news-card .body h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .body p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-card .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .news-card .meta a {
            color: var(--primary);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .section-news {
                padding: 40px 0;
            }
            .news-card .body {
                padding: 14px 16px 18px;
            }
        }
        @media (max-width: 520px) {
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 60px 0;
            background: var(--bg-body);
        }
        .faq-list {
            max-width: 800px;
            margin: 36px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            transition: background var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            background: var(--primary-bg);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .section-faq {
                padding: 40px 0;
            }
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 60px 0;
            background: linear-gradient(135deg, #0a4d8a 0%, #0f6cbf 50%, #1a8cdb 100%);
            position: relative;
            overflow: hidden;
        }
        .section-cta::after {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M50 50v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-40V0h-2v4h-4v2h4v4h2V6h4V4h-4zM10 50v-4H8v4H4v2h4v4h2v-4h4v-2H10zM10 10V0H8v4H4v2h4v4h2v-4h4V4h-4z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            pointer-events: none;
        }
        .section-cta .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .section-cta h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 16px;
        }
        .section-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }
        .cta-buttons .btn-primary {
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            transition: transform var(--transition), box-shadow var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }
        .cta-buttons .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
            color: var(--primary-dark);
        }
        .cta-buttons .btn-outline {
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: background var(--transition), border var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-buttons .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        @media (max-width: 768px) {
            .section-cta {
                padding: 40px 0;
            }
            .section-cta h2 {
                font-size: 1.5rem;
            }
            .section-cta p {
                font-size: 0.95rem;
            }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-outline {
                padding: 12px 24px;
                font-size: 0.85rem;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand .logo:hover {
            color: var(--secondary-light);
        }
        .footer-brand p {
            color: var(--text-light);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 18px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 1.1rem;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 18px;
            font-weight: 600;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            color: var(--text-light);
            font-size: 0.9rem;
            transition: color var(--transition), padding-left var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-col ul a i {
            font-size: 0.75rem;
            color: var(--primary-light);
            width: 16px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 0;
            font-size: 0.8rem;
            color: var(--text-light);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: var(--text-light);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer {
                padding: 40px 0 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-col h4 {
                margin-bottom: 12px;
            }
        }

        /* ===== 返回顶部 ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-lg);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition);
        }
        .back-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .back-top:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 520px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f6c8a;
            --primary-light: #1a8db0;
            --primary-dark: #0a4d63;
            --primary-bg: #e8f4f8;
            --secondary: #f5a623;
            --secondary-light: #f7c04a;
            --secondary-dark: #d4891a;
            --accent: #e74c5c;
            --bg: #ffffff;
            --bg-alt: #f7fafc;
            --bg-card: #ffffff;
            --text: #1a2a3a;
            --text-light: #5a6e7e;
            --text-muted: #8a9aa8;
            --border: #e2e8f0;
            --border-light: #f0f4f8;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(15, 108, 138, 0.08);
            --shadow-hover: 0 12px 40px rgba(15, 108, 138, 0.15);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-h: 70px;
            --nav-h: 52px;
            --spacer: 80px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: calc(var(--header-h) + var(--nav-h));
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        button {
            cursor: pointer;
            background: none;
        }

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

        /* ===== 标题层级 ===== */
        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 17px;
            color: var(--text-light);
            margin-bottom: 40px;
            max-width: 680px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== Header 双层导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--primary-dark);
            text-decoration: none;
            transition: opacity var(--transition);
        }
        .logo:hover {
            color: var(--primary-dark);
            opacity: 0.85;
        }
        .logo i {
            font-size: 26px;
            color: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .search-toggle,
        .menu-toggle {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            font-size: 18px;
            transition: background var(--transition), color var(--transition);
        }
        .search-toggle:hover,
        .menu-toggle:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        .search-box {
            display: none;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 24px;
            padding: 0 16px;
            border: 2px solid var(--border);
            transition: border-color var(--transition);
        }
        .search-box.active {
            display: flex;
        }
        .search-box input {
            background: transparent;
            border: none;
            padding: 10px 12px;
            min-width: 200px;
            color: var(--text);
            font-size: 15px;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box input:focus {
            outline: none;
        }
        .search-box button {
            color: var(--primary);
            font-size: 17px;
            padding: 6px 10px;
        }

        /* 导航第二层 - Tabs */
        .header-nav {
            height: var(--nav-h);
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 24px;
            max-width: var(--max-width);
            margin: 0 auto;
            width: 100%;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            border-top: 1px solid var(--border-light);
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-light);
            white-space: nowrap;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            text-decoration: none;
        }
        .nav-link i {
            font-size: 15px;
        }
        .nav-link:hover {
            background: var(--primary-bg);
            color: var(--primary);
            transform: translateY(-1px);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(15, 108, 138, 0.25);
        }
        .nav-link.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* ===== Hero 分类首屏 ===== */
        .category-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 60px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.03);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color var(--transition);
        }
        .category-hero .breadcrumb a:hover {
            color: #fff;
        }
        .category-hero .breadcrumb span {
            color: #fff;
        }

        .category-hero h1 {
            font-size: 40px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 i {
            margin-right: 10px;
            opacity: 0.9;
        }

        .category-hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.7;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 32px;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-stats .stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero-stats .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
        }
        .hero-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 64px 0;
        }
        .section-block.bg-alt {
            background: var(--bg-alt);
        }
        .section-block.bg-primary-light {
            background: var(--primary-bg);
        }

        /* ===== 资讯列表 ===== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .news-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
            border: 1px solid var(--border-light);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .news-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 48px;
            position: relative;
        }
        .news-card .card-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 16px;
            font-weight: 500;
        }
        .news-card .card-img .tag.hot {
            background: var(--accent);
        }
        .news-card .card-img .tag.new {
            background: var(--secondary);
        }

        .news-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card .card-meta i {
            margin-right: 4px;
        }
        .news-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 10px;
            transition: color var(--transition);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card:hover .card-title {
            color: var(--primary);
        }
        .news-card .card-text {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
        }
        .news-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
            transition: gap var(--transition);
            align-self: flex-start;
        }
        .news-card .card-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ===== 资讯分类标签 ===== */
        .topic-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .topic-tab {
            padding: 8px 22px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            background: var(--bg);
            border: 2px solid var(--border);
            color: var(--text-light);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .topic-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-bg);
        }
        .topic-tab.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(15, 108, 138, 0.2);
        }

        /* ===== 热门资讯 ===== */
        .hot-list {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 24px;
        }

        .hot-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .hot-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .hot-item .rank {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            opacity: 0.3;
            line-height: 1;
            min-width: 36px;
        }
        .hot-item .rank.top1 {
            color: var(--accent);
            opacity: 1;
        }
        .hot-item .rank.top2 {
            color: var(--secondary);
            opacity: 1;
        }
        .hot-item .rank.top3 {
            color: var(--primary);
            opacity: 1;
        }
        .hot-item .hot-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            transition: color var(--transition);
        }
        .hot-item:hover .hot-content h4 {
            color: var(--primary);
        }
        .hot-item .hot-content p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .hot-item .hot-meta {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        /* ===== 时间线 ===== */
        .timeline {
            position: relative;
            padding-left: 40px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--border);
            border-radius: 4px;
        }

        .timeline-item {
            position: relative;
            padding-bottom: 36px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -26px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg);
            box-shadow: 0 0 0 3px var(--primary-bg);
        }
        .timeline-item .tl-date {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 4px;
        }
        .timeline-item .tl-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .timeline-item .tl-desc {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-card .stat-icon {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
        }
        .stat-card .stat-number .suffix {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-light);
        }
        .stat-card .stat-label {
            font-size: 15px;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: color var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 580px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-block .btn {
            padding: 14px 36px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-block .btn-primary {
            background: #fff;
            color: var(--primary);
        }
        .cta-block .btn-primary:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        .cta-block .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
        }
        .cta-block .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            color: var(--secondary);
        }
        .footer-brand .logo:hover {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 18px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition), padding-left var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 按钮通用 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(15, 108, 138, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 108, 138, 0.35);
        }
        .btn-secondary {
            background: var(--secondary);
            color: #fff;
        }
        .btn-secondary:hover {
            background: var(--secondary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .hot-list {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: calc(60px + 48px);
            }
            .header-top {
                height: 60px;
                padding: 0 16px;
            }
            .header-nav {
                height: 48px;
                padding: 0 12px;
                gap: 2px;
            }
            .nav-link {
                padding: 6px 14px;
                font-size: 13px;
            }
            .nav-link i {
                font-size: 13px;
            }
            .logo {
                font-size: 18px;
            }
            .logo i {
                font-size: 20px;
            }
            .search-box input {
                min-width: 120px;
                font-size: 14px;
            }

            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 16px;
            }
            .hero-stats {
                gap: 24px;
                flex-wrap: wrap;
            }
            .hero-stats .stat-number {
                font-size: 22px;
            }

            .section-title {
                font-size: 26px;
            }
            .section-subtitle {
                font-size: 15px;
            }
            .section-block {
                padding: 48px 0;
            }

            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-card .card-img {
                height: 180px;
            }
            .news-card .card-body {
                padding: 16px 18px 20px;
            }
            .news-card .card-title {
                font-size: 16px;
            }

            .hot-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hot-item {
                padding: 18px;
            }
            .hot-item .rank {
                font-size: 22px;
                min-width: 28px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-card .stat-number {
                font-size: 28px;
            }

            .timeline {
                padding-left: 32px;
            }
            .timeline-item .tl-title {
                font-size: 15px;
            }

            .topic-tabs {
                gap: 8px;
            }
            .topic-tab {
                padding: 6px 16px;
                font-size: 13px;
            }

            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 24px;
            }
            .cta-block .btn {
                padding: 12px 28px;
                font-size: 15px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-top {
                padding: 0 12px;
            }
            .header-nav {
                padding: 0 8px;
            }
            .nav-link {
                padding: 4px 12px;
                font-size: 12px;
                gap: 4px;
            }
            .nav-link i {
                font-size: 12px;
            }
            .search-box input {
                min-width: 80px;
                font-size: 13px;
                padding: 6px 8px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero p {
                font-size: 14px;
            }
            .hero-stats .stat-number {
                font-size: 18px;
            }
            .hero-stats .stat-label {
                font-size: 12px;
            }
            .section-title {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-number {
                font-size: 24px;
            }
            .news-card .card-img {
                height: 160px;
            }
            .cta-block {
                padding: 32px 16px;
            }
            .cta-block h2 {
                font-size: 20px;
            }
            .cta-block .btn-group {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-12 {
            gap: 12px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 加载动画 ===== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .fade-up {
            animation: fadeUp 0.6s ease forwards;
        }