/* roulang page: index */
:root {
  --primary: #0b1f33;
  --primary-light: #16324a;
  --primary-dark: #061421;
  --accent: #c9a45c;
  --accent-hover: #b8924a;
  --accent-soft: rgba(201,164,92,0.15);
  --bg: #f6f5f2;
  --surface: #ffffff;
  --text: #16212e;
  --text-muted: #5c6b7a;
  --border: #e7e1d7;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 8px rgba(11,31,51,0.06);
  --shadow: 0 12px 32px rgba(11,31,51,0.1);
  --shadow-lg: 0 24px 60px rgba(11,31,51,0.15);
  --transition: 0.3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:680px;margin-bottom:52px}
.section-head .eyebrow{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:0.08em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;padding:6px 14px;
  background:var(--accent-soft);border-radius:30px;
}
.section-head h2{font-size:clamp(26px,3.5vw,38px);font-weight:800;line-height:1.3;color:var(--primary)}
.section-head p{margin-top:14px;color:var(--text-muted);font-size:16px}
.text-center{text-align:center}
.text-center .section-head{margin-left:auto;margin-right:auto}

/* ===== 左侧导航 ===== */
.site-shell{display:flex;min-height:100vh}
.sidebar{
  width:280px;position:fixed;top:0;left:0;height:100vh;
  background:var(--primary-dark);color:#fff;display:flex;flex-direction:column;
  padding:30px 22px;z-index:1000;transition:transform 0.35s ease;overflow-y:auto;
}
.sidebar-brand{display:flex;align-items:center;gap:12px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,0.1);margin-bottom:28px}
.brand-icon{
  width:46px;height:46px;border-radius:14px;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),#a8843e);
  display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;
  box-shadow:0 6px 18px rgba(201,164,92,0.4);
}
.brand-text{font-size:17px;font-weight:700;line-height:1.4;letter-spacing:0.02em}
.brand-sub{font-size:11px;color:rgba(255,255,255,0.5);font-weight:400;margin-top:2px}
.sidebar-nav{display:flex;flex-direction:column;gap:6px;flex:1;margin-bottom:20px}
.nav-link{
  display:flex;align-items:center;gap:14px;padding:13px 16px;border-radius:12px;
  color:rgba(255,255,255,0.7);font-size:15px;font-weight:500;transition:all 0.3s ease;
}
.nav-link i{width:20px;text-align:center;font-size:16px}
.nav-link:hover{background:rgba(255,255,255,0.08);color:#fff;transform:translateX(2px)}
.nav-link.active{background:var(--accent);color:var(--primary-dark);font-weight:700;box-shadow:0 6px 16px rgba(201,164,92,0.35)}
.sidebar-card{
  margin-top:auto;padding:20px;border-radius:16px;background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.1);
}
.sidebar-card p{font-size:13px;color:rgba(255,255,255,0.65);line-height:1.7}
.sidebar-card strong{color:var(--accent);font-weight:700}
.sidebar-card .card-btn{
  display:block;margin-top:12px;padding:9px 14px;border-radius:10px;text-align:center;
  background:var(--accent);color:var(--primary-dark);font-size:13px;font-weight:700;transition:all 0.3s ease;
}
.sidebar-card .card-btn:hover{background:#dbb872;transform:translateY(-1px)}
.main-content{flex:1;margin-left:280px}

/* ===== 移动端顶栏 ===== */
.mobile-header{display:none}
.mobile-menu{display:none}
@media (max-width:1024px){
  .sidebar{transform:translateX(-105%);box-shadow:4px 0 30px rgba(0,0,0,0.2)}
  .sidebar.open{transform:translateX(0)}
  .main-content{margin-left:0}
  .mobile-header{
    display:flex;position:sticky;top:0;z-index:1200;
    background:var(--primary-dark);color:#fff;padding:14px 20px;
    align-items:center;justify-content:space-between;
    box-shadow:0 4px 20px rgba(0,0,0,0.25);
  }
  .mobile-logo{font-size:16px;font-weight:700;display:flex;align-items:center;gap:10px}
  .mobile-logo .brand-icon{width:34px;height:34px;font-size:14px;border-radius:10px}
  .menu-toggle{
    width:42px;height:42px;border-radius:10px;
    border:1px solid rgba(255,255,255,0.2);color:#fff;font-size:18px;
    display:flex;align-items:center;justify-content:center;transition:background 0.3s ease;
  }
  .menu-toggle:hover{background:rgba(255,255,255,0.1)}
  .mobile-menu{
    position:sticky;top:70px;z-index:1100;background:var(--primary-dark);
    padding:14px 20px 20px;border-top:1px solid rgba(255,255,255,0.08);
    box-shadow:0 10px 25px rgba(0,0,0,0.25);
  }
  .mobile-menu a{
    display:block;padding:14px 16px;color:rgba(255,255,255,0.85);border-radius:10px;
    font-size:15px;font-weight:500;transition:background 0.2s ease;
  }
  .mobile-menu a:hover{background:rgba(255,255,255,0.1);color:#fff}
  .mobile-menu a.active{background:var(--accent);color:var(--primary-dark);font-weight:700}
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:50px;font-size:15px;font-weight:600;
  transition:all 0.3s ease;line-height:1.4;white-space:nowrap;
}
.btn-primary{background:var(--accent);color:var(--primary-dark);box-shadow:0 5px 16px rgba(201,164,92,0.4)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 25px rgba(201,164,92,0.5)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,0.6)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,0.1);transform:translateY(-2px)}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-lg{padding:16px 38px;font-size:16px}

/* ===== Hero ===== */
.hero{
  position:relative;min-height:620px;background-size:cover;background-position:center;
  display:flex;align-items:center;padding:110px 0;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(6,20,33,0.95) 0%,rgba(6,20,33,0.78) 40%,rgba(6,20,33,0.4) 100%);
}
.hero-inner{position:relative;z-index:2;max-width:760px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:30px;
  background:rgba(201,164,92,0.18);border:1px solid rgba(201,164,92,0.45);
  color:var(--accent);font-size:13px;font-weight:600;letter-spacing:0.03em;margin-bottom:24px;
}
.hero h1{font-size:clamp(34px,5vw,54px);font-weight:800;line-height:1.2;color:#fff;letter-spacing:-0.01em}
.hero h1 span{color:var(--accent)}
.hero-desc{margin-top:24px;font-size:17px;color:rgba(255,255,255,0.85);line-height:1.8;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:36px}
.hero-metrics{display:flex;flex-wrap:wrap;gap:32px;margin-top:52px;padding-top:30px;border-top:1px solid rgba(255,255,255,0.15)}
.metric-item .metric-value{font-size:26px;font-weight:800;color:#fff}
.metric-item .metric-label{font-size:13px;color:rgba(255,255,255,0.6);margin-top:4px}

/* ===== 卡片 ===== */
.card{
  background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);
  padding:32px;transition:all 0.35s ease;position:relative;overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
.card-icon{
  width:54px;height:54px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:20px;color:var(--primary);background:var(--accent-soft);
}
.card h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:10px}
.card p{font-size:14px;color:var(--text-muted);line-height:1.7}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

/* ===== 分类卡片 ===== */
.category-card{
  display:flex;background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--border);transition:all 0.35s ease;
}
.category-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.category-card .media{width:45%;min-height:300px;overflow:hidden;position:relative}
.category-card .media img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.category-card:hover .media img{transform:scale(1.05)}
.category-card .content{padding:38px;flex:1;display:flex;flex-direction:column;justify-content:center}
.category-card .tag{
  display:inline-block;padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600;
  background:var(--accent-soft);color:var(--accent);margin-bottom:16px;align-self:flex-start;
}
.category-card h3{font-size:24px;font-weight:800;color:var(--primary);margin-bottom:12px}
.category-card p{color:var(--text-muted);font-size:15px;line-height:1.7;margin-bottom:22px}

/* ===== 资讯列表 ===== */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-item{
  display:flex;align-items:center;gap:18px;background:var(--surface);
  border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;
  transition:all 0.3s ease;
}
.news-item:hover{box-shadow:var(--shadow);transform:translateX(4px);border-color:rgba(201,164,92,0.4)}
.news-icon{
  width:44px;height:44px;border-radius:12px;background:var(--accent-soft);
  display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:17px;flex-shrink:0;
}
.news-body{flex:1;min-width:0}
.news-title{font-size:16px;font-weight:600;color:var(--text);line-height:1.5;margin-bottom:6px;display:block}
.news-title:hover{color:var(--primary)}
.news-meta{display:flex;gap:14px;font-size:13px;color:var(--text-muted)}
.news-empty{
  background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius);
  padding:50px;text-align:center;color:var(--text-muted);font-size:15px;
}

/* ===== 流程 ===== */
.steps-wrap{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:step}
.step-card{
  position:relative;background:var(--surface);border-radius:var(--radius);padding:38px 30px 30px;
  border:1px solid var(--border);transition:all 0.3s ease;
}
.step-card:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step-num{
  font-size:42px;font-weight:800;color:transparent;-webkit-text-stroke:1.5px var(--accent);
  line-height:1;margin-bottom:18px;
}
.step-card h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:10px}
.step-card p{font-size:14px;color:var(--text-muted);line-height:1.7}
.step-line{position:absolute;top:44px;right:-24px;color:var(--accent);font-size:20px;z-index:2;display:none}
@media(min-width:1025px){.step-line{display:block}}

/* ===== 数据块 ===== */
.stats-section{
  background:var(--primary-dark);padding:88px 0;position:relative;overflow:hidden;
}
.stats-section::after{
  content:'';position:absolute;top:-60px;right:-60px;width:280px;height:280px;border-radius:50%;
  background:rgba(201,164,92,0.08);
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;position:relative;z-index:2}
.stat-item{text-align:center}
.stat-value{font-size:38px;font-weight:800;color:var(--accent);line-height:1.2}
.stat-label{margin-top:8px;font-size:14px;color:rgba(255,255,255,0.65)}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;transition:all 0.3s ease;
}
.faq-item:hover{box-shadow:var(--shadow-sm);border-color:rgba(201,164,92,0.35)}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:22px 28px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;
}
.faq-q i{color:var(--accent);transition:transform 0.3s ease;flex-shrink:0}
.faq-item.active .faq-q i{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 0.4s ease}
.faq-a-inner{padding:0 28px 24px;color:var(--text-muted);font-size:15px;line-height:1.8}

/* ===== CTA ===== */
.cta-section{
  position:relative;background-size:cover;background-position:center;padding:100px 0;
}
.cta-section::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(6,20,33,0.94),rgba(11,31,51,0.75));
}
.cta-inner{position:relative;z-index:2;max-width:650px;margin:0 auto;text-align:center}
.cta-inner h2{font-size:clamp(28px,4vw,40px);font-weight:800;color:#fff;line-height:1.3}
.cta-inner p{margin-top:16px;color:rgba(255,255,255,0.8);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:32px}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--primary-dark);color:rgba(255,255,255,0.6);padding:56px 0 28px;
}
.footer-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:40px}
.footer-brand .brand-text{color:#fff}
.footer-links{display:flex;gap:24px;flex-wrap:wrap}
.footer-links a{color:rgba(255,255,255,0.7);font-size:14px;transition:color 0.3s ease}
.footer-links a:hover{color:var(--accent)}
.footer-copy{
  border-top:1px solid rgba(255,255,255,0.1);padding-top:22px;text-align:center;
  font-size:13px;color:rgba(255,255,255,0.45);
}

/* ===== 响应式 ===== */
@media(max-width:1024px){
  .section{padding:64px 0}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px}
  .category-card{flex-direction:column}
  .category-card .media{width:100%;min-height:220px}
  .steps-wrap{grid-template-columns:1fr;max-width:420px;margin:0 auto}
}
@media(max-width:640px){
  .section{padding:52px 0}
  .container{padding:0 20px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .hero{min-height:520px;padding:80px 0}
  .hero-metrics{gap:20px;flex-direction:column}
  .metric-item{display:flex;align-items:baseline;gap:10px}
  .news-item{flex-direction:column;align-items:flex-start;gap:12px}
  .btn{width:100%;justify-content:center}
  .hero-actions{flex-direction:column}
  .stat-value{font-size:32px}
  .footer-grid{flex-direction:column}
  .faq-q{padding:18px 20px;font-size:15px}
  .faq-a-inner{padding:0 20px 20px}
}

/* roulang page: article */
:root {
  --primary: #0f172a;
  --primary-soft: #1e293b;
  --accent: #d97706;
  --accent-hover: #b45309;
  --accent-soft: #fef3c7;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --text-weak: #64748b;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06);
  --shadow-md: 0 6px 24px rgba(15,23,42,0.08);
  --shadow-lg: 0 12px 40px rgba(15,23,42,0.12);
  --sidebar-w: 260px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button, input { font-family: inherit; }

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ===== 侧边导航 ===== */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  background: var(--primary);
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 28px 20px;
  z-index: 60;
  flex-shrink: 0;
}
.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  transition: background .2s;
}
.brand-box:hover { background: rgba(255,255,255,0.06); }
.brand-dot {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; color: #fff; font-weight: 800;
  box-shadow: 0 4px 12px rgba(217,119,6,0.4);
}
.brand-text {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.sidebar-nav {
  margin-top: 36px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-radius: 12px;
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  font-weight: 500;
  transition: all .2s ease;
  border: 1px solid transparent;
}
.sidebar-nav .nav-link i { width: 20px; text-align: center; font-size: 15px; }
.sidebar-nav .nav-link:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
  transform: translateX(3px);
}
.sidebar-nav .nav-link.active {
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  color: #fff;
  box-shadow: 0 4px 16px rgba(217,119,6,0.35);
}
.sidebar-foot {
  margin-top: auto;
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.sidebar-status {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: rgba(255,255,255,0.6);
}
.status-dot {
  width: 8px; height: 8px;
  background: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(34,197,94,0.25);
}
.sidebar-close {
  display: none;
  position: absolute;
  top: 18px; right: 16px;
  width: 34px; height: 34px;
  border-radius: 10px;
  border: none;
  background: rgba(255,255,255,0.1);
  color: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: background .2s;
}
.sidebar-close:hover { background: rgba(255,255,255,0.2); }

/* ===== 移动端顶栏 ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 40;
  height: 62px;
  background: var(--primary);
  color: #fff;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  box-shadow: 0 4px 20px rgba(15,23,42,0.25);
}
.mobile-brand { font-size: 17px; font-weight: 800; color: #fff; letter-spacing: 0.5px; }
.mobile-menu-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  border: none;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s;
}
.mobile-menu-btn:hover { background: rgba(255,255,255,0.2); }
.sidebar-mask {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.55);
  z-index: 55;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s ease;
  backdrop-filter: blur(3px);
}
.sidebar-mask.open { opacity: 1; pointer-events: auto; }

/* ===== 主内容区 ===== */
.main-area {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 80px 0 68px;
  margin-bottom: 0;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(125deg, rgba(15,23,42,0.94) 20%, rgba(15,23,42,0.78) 60%, rgba(15,23,42,0.6));
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 20px;
}
.breadcrumb a { color: rgba(255,255,255,0.8); transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.category-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  backdrop-filter: blur(6px);
  margin-bottom: 18px;
}
.article-hero-title {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  max-width: 780px;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}
.article-hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  max-width: 680px;
  line-height: 1.8;
  margin-bottom: 22px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 14px;
  color: rgba(255,255,255,0.65);
}
.article-meta span { display: flex; align-items: center; gap: 7px; }
.article-meta i { color: var(--accent); }

/* ===== 正文区域 ===== */
.article-body-section {
  padding: 56px 0 20px;
}
.article-content {
  max-width: 840px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.9;
  color: #334155;
}
.article-content h2 {
  font-size: 25px;
  font-weight: 700;
  color: var(--primary);
  margin: 38px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--accent);
  border-radius: 4px;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin: 30px 0 12px;
}
.article-content p { margin: 16px 0; }
.article-content img {
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  margin: 28px auto;
}
.article-content ul {
  margin: 18px 0;
  padding-left: 24px;
  list-style: none;
}
.article-content ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
}
.article-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), #f59e0b);
}
.article-content ol {
  margin: 18px 0;
  padding-left: 24px;
  list-style: decimal;
}
.article-content ol li { margin-bottom: 10px; padding-left: 4px; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 18px 22px;
  border-radius: 0 14px 14px 0;
  margin: 24px 0;
  color: #78350f;
  font-size: 15px;
}
.article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--accent-hover); }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 15px;
}
.article-content table th {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
}
.article-content table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.article-content table tr:hover td { background: #f8fafc; }

/* ===== 标题头部 ===== */
.section-head {
  text-align: center;
  margin-bottom: 44px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}
.section-head p {
  font-size: 15px;
  color: var(--text-weak);
}

/* ===== 注册要点 ===== */
.tips-section {
  padding: 60px 0 40px;
}
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.tip-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  transition: all .3s ease;
  box-shadow: var(--shadow-sm);
}
.tip-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(217,119,6,0.35);
}
.tip-card i {
  font-size: 32px;
  color: var(--accent);
  background: var(--accent-soft);
  width: 68px;
  height: 68px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.tip-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.tip-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== 延伸阅读 ===== */
.related-section {
  padding: 50px 0 60px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(217,119,6,0.3);
}
.related-card img {
  height: 180px;
  width: 100%;
  object-fit: cover;
}
.related-info {
  padding: 22px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.related-info .tag {
  display: inline-block;
  align-self: flex-start;
  padding: 4px 14px;
  background: var(--accent-soft);
  color: #92400e;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.related-info h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.related-info p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-top: auto;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 60px 0;
  background: #fff;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 22px;
  transition: background .2s, border-color .2s;
}
.faq-item:hover { border-color: rgba(217,119,6,0.35); }
.faq-item summary {
  cursor: pointer;
  padding: 18px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 13px;
  color: var(--text-weak);
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item[open] summary { color: var(--accent-hover); }
.faq-item p {
  padding: 0 0 18px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0;
  background: var(--bg);
}
.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, #1e293b 60%, #334155 100%);
  border-radius: 24px;
  padding: 52px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(217,119,6,0.3), transparent 70%);
}
.cta-card h2 {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}
.cta-card p {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 26px;
}
.cta-btn {
  display: inline-block;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  color: #fff;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(217,119,6,0.4);
  transition: all .25s ease;
}
.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(217,119,6,0.5);
}

/* ===== 内容未找到 ===== */
.not-found-section {
  padding: 120px 24px;
  display: flex;
  justify-content: center;
}
.not-found-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  max-width: 480px;
  box-shadow: var(--shadow-md);
}
.not-found-box i {
  font-size: 44px;
  color: var(--accent);
  margin-bottom: 18px;
  display: block;
}
.not-found-box h1 {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}
.not-found-box p {
  font-size: 15px;
  color: var(--text-weak);
  margin-bottom: 26px;
}
.btn-primary {
  display: inline-block;
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  color: #fff;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(217,119,6,0.35);
  transition: all .25s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(217,119,6,0.45);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary);
  padding: 48px 0 28px;
  margin-top: auto;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .brand-text {
  font-size: 20px;
  color: #fff;
  font-weight: 800;
}
.footer-links {
  display: flex;
  gap: 24px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent); }
.footer-copy {
  padding-top: 20px;
  text-align: center;
}
.footer-copy p {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  line-height: 1.7;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 20px; }
  .article-hero { padding: 60px 0 48px; }
  .article-hero-title { font-size: 28px; }
  .tips-grid, .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .section-head h2 { font-size: 26px; }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 272px;
    height: 100vh;
    transform: translateX(-100%);
    transition: transform .32s ease;
    border-radius: 0 20px 20px 0;
    box-shadow: none;
  }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .sidebar-close { display: flex; }
  .mobile-header { display: flex; }
  .main-area { width: 100%; }
  .article-hero {
    padding: 48px 0 40px;
    border-radius: 0;
  }
  .article-hero-title { font-size: 24px; }
  .article-hero-desc { font-size: 15px; }
  .article-body-section { padding: 40px 0 16px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 21px; }
  .tips-section { padding: 44px 0 32px; }
  .related-section { padding: 40px 0 48px; }
  .tips-grid, .related-grid { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: 23px; }
  .cta-section { padding: 52px 0; }
  .cta-card { padding: 40px 24px; }
  .cta-card h2 { font-size: 22px; }
  .faq-section { padding: 48px 0; }
  .faq-item summary { font-size: 15px; }
  .footer-grid { flex-direction: column; gap: 24px; }
  .not-found-section { padding: 80px 20px; }
  .not-found-box { padding: 40px 28px; }
}

@media (max-width: 520px) {
  .article-hero-title { font-size: 21px; }
  .article-meta { gap: 12px; font-size: 13px; }
  .tip-card { padding: 26px 20px; }
  .related-card img { height: 160px; }
  .cta-btn { padding: 12px 28px; font-size: 14px; }
  .breadcrumb { font-size: 13px; }
  .footer-links { flex-wrap: wrap; gap: 16px; }
  .article-content { font-size: 14px; }
}

@media (min-width: 769px) {
  .sidebar-mask { display: none !important; }
}

/* roulang page: category1 */
:root {
      --primary: #1d4ed8;
      --primary-deep: #1e3a8a;
      --accent: #06b6d4;
      --accent-soft: #e0f2fe;
      --ink: #0f172a;
      --text: #1e293b;
      --text-weak: #64748b;
      --bg: #f5f7fb;
      --border: #e3eaf2;
      --radius: 16px;
      --radius-lg: 22px;
      --shadow-sm: 0 2px 12px rgba(15, 23, 42, 0.05);
      --shadow-md: 0 10px 34px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.12);
      --sidebar-width: 272px;
      --transition: all 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

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

    html { scroll-behavior: smooth; }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", "Segoe UI", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.7;
      color: var(--text);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

    ul { margin: 0; padding: 0; list-style: none; }
    a { text-decoration: none; color: inherit; transition: var(--transition); }
    img { max-width: 100%; display: block; }
    button { cursor: pointer; font-family: inherit; }

    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 28px;
    }

    /* ========= 左侧导航 ========= */
    .sidebar {
      position: fixed;
      top: 0;
      left: 0;
      width: var(--sidebar-width);
      height: 100vh;
      background: linear-gradient(178deg, #0b1424 0%, #101f38 55%, #14294a 100%);
      display: flex;
      flex-direction: column;
      padding: 30px 22px 24px;
      z-index: 60;
      border-right: 1px solid rgba(255, 255, 255, 0.05);
    }

    .sidebar-brand {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 6px 8px 22px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      margin-bottom: 24px;
    }

    .brand-logo {
      width: 42px;
      height: 42px;
      border-radius: 13px;
      background: linear-gradient(135deg, #2563eb, #06b6d4);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 18px;
      box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
      flex-shrink: 0;
    }

    .brand-name {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      letter-spacing: 0.5px;
      line-height: 1.35;
    }

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

    .nav-link {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 16px;
      border-radius: 13px;
      color: rgba(255, 255, 255, 0.58);
      font-size: 15px;
      font-weight: 500;
      border: 1px solid transparent;
      transition: var(--transition);
    }

    .nav-link i { width: 20px; text-align: center; font-size: 15px; }

    .nav-link:hover {
      color: #fff;
      background: rgba(255, 255, 255, 0.06);
      transform: translateX(3px);
    }

    .nav-link.active {
      color: #fff;
      background: linear-gradient(135deg, rgba(37, 99, 235, 0.30), rgba(6, 182, 212, 0.18));
      border-color: rgba(37, 99, 235, 0.35);
      box-shadow: 0 8px 22px rgba(0, 0, 0, 0.15);
    }

    .sidebar-info {
      padding: 18px 16px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      margin-top: 18px;
    }

    .sidebar-info p {
      margin: 0;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.45);
      line-height: 1.65;
    }

    .sidebar-info i { color: #38bdf8; margin-right: 6px; }

    /* ========= 右侧主区域 ========= */
    .app-main {
      margin-left: var(--sidebar-width);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      background: var(--bg);
    }

    main { flex: 1; }

    /* ========= 移动端顶栏 ========= */
    .mobile-header {
      display: none;
      position: sticky;
      top: 0;
      z-index: 55;
      align-items: center;
      justify-content: space-between;
      padding: 13px 18px;
      background: rgba(11, 20, 36, 0.94);
      backdrop-filter: blur(14px);
      color: #fff;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      font-size: 16px;
      color: #fff;
    }

    .mobile-toggle {
      width: 40px;
      height: 40px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .mobile-toggle:hover { background: rgba(255, 255, 255, 0.14); }

    .mobile-nav {
      position: absolute;
      top: 66px;
      left: 12px;
      right: 12px;
      background: #0f172a;
      border-radius: 16px;
      padding: 8px;
      display: none;
      box-shadow: 0 22px 46px rgba(0, 0, 0, 0.32);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .mobile-nav.open { display: flex; flex-direction: column; gap: 4px; }

    .mobile-nav a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 12px 14px;
      border-radius: 10px;
      color: rgba(255, 255, 255, 0.7);
      font-size: 15px;
    }

    .mobile-nav a:hover { background: rgba(255, 255, 255, 0.06); color: #fff; }
    .mobile-nav a.active { background: rgba(37, 99, 235, 0.26); color: #fff; }

    /* ========= 页首横幅 ========= */
    .page-hero {
      position: relative;
      padding: 88px 0 80px;
      background-size: cover;
      background-position: center;
      color: #fff;
      overflow: hidden;
    }

    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(110deg, rgba(8, 17, 32, 0.93) 18%, rgba(13, 40, 78, 0.78) 54%, rgba(6, 128, 182, 0.36) 100%);
    }

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

    .hero-breadcrumb {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.72);
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.16);
      padding: 6px 14px;
      border-radius: 30px;
      backdrop-filter: blur(6px);
      margin-bottom: 22px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(6, 182, 212, 0.16);
      border: 1px solid rgba(6, 182, 212, 0.4);
      color: #a5f3fc;
      font-size: 13px;
      font-weight: 600;
      padding: 7px 16px;
      border-radius: 30px;
      margin-bottom: 20px;
      letter-spacing: 0.4px;
    }

    .page-hero h1 {
      font-size: clamp(32px, 5vw, 52px);
      font-weight: 800;
      line-height: 1.2;
      margin: 0 0 18px;
      letter-spacing: 1px;
    }

    .page-hero h1 span { color: #38bdf8; }

    .page-hero .hero-lead {
      font-size: 17px;
      line-height: 1.85;
      color: rgba(255, 255, 255, 0.78);
      max-width: 640px;
      margin: 0 0 30px;
    }

    .hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

    /* ========= 通用按钮 ========= */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 13px 28px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 600;
      border: 1px solid transparent;
      transition: var(--transition);
    }

    .btn i { font-size: 14px; }

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

    .btn-primary {
      background: linear-gradient(135deg, #2563eb, #1d4ed8);
      color: #fff;
      box-shadow: 0 8px 24px rgba(37, 99, 235, 0.28);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 32px rgba(37, 99, 235, 0.4);
    }

    .btn-outline {
      border: 1px solid var(--border);
      color: var(--text);
      background: #fff;
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
    }

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

    .btn-light:hover {
      transform: translateY(-2px);
      box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
    }

    /* ========= 内容区块 ========= */
    .section { padding: 80px 0; }
    .section--white { background: #fff; }
    .section--soft { background: #f8fafc; }

    .section-head {
      text-align: center;
      max-width: 680px;
      margin: 0 auto 52px;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: var(--accent-soft);
      padding: 6px 16px;
      border-radius: 30px;
      letter-spacing: 0.5px;
    }

    .section-head h2 {
      font-size: clamp(26px, 3.4vw, 36px);
      font-weight: 800;
      color: var(--ink);
      margin: 14px 0 10px;
      line-height: 1.3;
    }

    .section-head p {
      color: var(--text-weak);
      font-size: 16px;
      margin: 0;
    }

    .section-head.light .section-tag { background: rgba(255, 255, 255, 0.1); color: #7dd3fc; }
    .section-head.light h2 { color: #fff; }
    .section-head.light p { color: rgba(255, 255, 255, 0.6); }

    /* ========= 流程卡片 ========= */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      position: relative;
      background: #fff;
      border-radius: 18px;
      padding: 32px 24px 28px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      overflow: hidden;
    }

    .step-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: var(--transition);
    }

    .step-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: transparent;
    }

    .step-card:hover::before { opacity: 1; }

    .step-num {
      position: absolute;
      top: 18px;
      right: 20px;
      font-size: 36px;
      font-weight: 800;
      color: #eef2ff;
      line-height: 1;
    }

    .step-icon {
      width: 56px;
      height: 56px;
      border-radius: 16px;
      background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(6, 182, 212, 0.1));
      border: 1px solid rgba(37, 99, 235, 0.12);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 21px;
      margin-bottom: 20px;
      transition: var(--transition);
    }

    .step-card:hover .step-icon {
      background: linear-gradient(135deg, #2563eb, #06b6d4);
      color: #fff;
    }

    .step-card h3 { font-size: 17px; font-weight: 700; color: var(--ink); margin: 0 0 10px; }
    .step-card p { font-size: 14px; color: var(--text-weak); margin: 0; line-height: 1.7; }

    /* ========= 深色准备区块 ========= */
    .prep-section {
      background: linear-gradient(150deg, #0f172a 0%, #0e2a4d 55%, #13405f 100%);
      padding: 88px 0 64px;
      position: relative;
      overflow: hidden;
    }

    .prep-section::after {
      content: "";
      position: absolute;
      right: -140px;
      top: -140px;
      width: 380px;
      height: 380px;
      border-radius: 50%;
      background: rgba(6, 182, 212, 0.14);
      filter: blur(60px);
      pointer-events: none;
    }

    .prep-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
      position: relative;
      z-index: 1;
    }

    .prep-card {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 20px;
      padding: 32px 26px;
      backdrop-filter: blur(8px);
      transition: var(--transition);
    }

    .prep-card:hover {
      background: rgba(255, 255, 255, 0.09);
      transform: translateY(-6px);
      border-color: rgba(56, 189, 248, 0.4);
      box-shadow: 0 18px 42px rgba(0, 0, 0, 0.22);
    }

    .prep-card i {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: rgba(6, 182, 212, 0.16);
      color: #67e8f9;
      font-size: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .prep-card h3 { color: #fff; font-size: 17px; font-weight: 700; margin: 0 0 10px; }
    .prep-card p { color: rgba(255, 255, 255, 0.6); font-size: 14px; margin: 0; line-height: 1.7; }

    .prep-stats {
      margin-top: 52px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 20px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      padding: 30px 20px;
      position: relative;
      z-index: 1;
    }

    .prep-stat { text-align: center; }

    .prep-stat + .prep-stat { border-left: 1px solid rgba(255, 255, 255, 0.1); }

    .prep-stat .num {
      font-size: 30px;
      font-weight: 800;
      color: #7dd3fc;
      line-height: 1.2;
    }

    .prep-stat .label {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.55);
      margin-top: 6px;
    }

    /* ========= 图文分栏 ========= */
    .split-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .split-media { position: relative; }

    .split-media img {
      border-radius: 22px;
      box-shadow: var(--shadow-lg);
      width: 100%;
      height: 430px;
      object-fit: cover;
    }

    .media-badge {
      position: absolute;
      bottom: 18px;
      left: 18px;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(8px);
      padding: 10px 18px;
      border-radius: 12px;
      font-size: 14px;
      font-weight: 600;
      color: var(--ink);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: var(--shadow-md);
    }

    .media-badge i { color: #16a34a; }

    .split-content { padding: 16px 0; }

    .split-content h2 {
      font-size: clamp(26px, 3vw, 34px);
      font-weight: 800;
      color: var(--ink);
      line-height: 1.3;
      margin: 14px 0 16px;
    }

    .split-content > p {
      color: var(--text-weak);
      font-size: 15px;
      margin: 0 0 22px;
      line-height: 1.75;
    }

    .check-list { margin: 0 0 28px; }

    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 11px 0;
      border-bottom: 1px dashed var(--border);
      font-size: 15px;
      color: var(--text);
    }

    .check-list li:last-child { border-bottom: none; }
    .check-list i { color: var(--accent); margin-top: 4px; }

    /* ========= 要点提示 ========= */
    .tips-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }

    .tip-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 18px;
      padding: 28px 22px;
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }

    .tip-card::after {
      content: "";
      position: absolute;
      right: -42px;
      top: -42px;
      width: 110px;
      height: 110px;
      border-radius: 50%;
      background: rgba(37, 99, 235, 0.05);
      transition: var(--transition);
    }

    .tip-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .tip-card:hover::after { transform: scale(1.6); background: rgba(37, 99, 235, 0.09); }

    .tip-index {
      font-size: 27px;
      font-weight: 800;
      color: var(--primary);
      opacity: 0.35;
      margin-bottom: 14px;
      line-height: 1;
      position: relative;
      z-index: 1;
    }

    .tip-card h3 { font-size: 16px; font-weight: 700; color: var(--ink); margin: 0 0 10px; position: relative; z-index: 1; }
    .tip-card p { font-size: 14px; color: var(--text-weak); margin: 0; line-height: 1.65; position: relative; z-index: 1; }

    /* ========= 安全卡片 ========= */
    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .info-card {
      background: #fff;
      border-radius: 20px;
      padding: 34px 28px;
      border: 1px solid var(--border);
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      text-align: center;
    }

    .info-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-lg);
      border-color: transparent;
    }

    .card-icon {
      width: 62px;
      height: 62px;
      margin: 0 auto 20px;
      border-radius: 18px;
      background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--primary);
    }

    .info-card h3 { font-size: 17px; font-weight: 700; color: var(--ink); margin: 0 0 10px; }
    .info-card p { font-size: 14px; color: var(--text-weak); margin: 0; line-height: 1.7; }

    /* ========= 常见问题 ========= */
    .faq-list { max-width: 840px; margin: 0 auto; }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 16px;
      margin-bottom: 14px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover { border-color: rgba(37, 99, 235, 0.3); box-shadow: var(--shadow-sm); }

    .faq-item summary {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--ink);
      list-style: none;
      transition: var(--transition);
    }

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

    .faq-item summary .q-icon {
      flex-shrink: 0;
      width: 32px;
      height: 32px;
      border-radius: 10px;
      background: var(--accent-soft);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 13px;
      font-weight: 700;
    }

    .faq-item summary .arrow {
      margin-left: auto;
      font-size: 14px;
      color: var(--text-weak);
      transition: transform 0.3s ease;
    }

    .faq-item[open] summary .arrow { transform: rotate(180deg); }
    .faq-item[open] summary { color: var(--primary); }

    .faq-item p {
      margin: 0;
      padding: 0 24px 22px 70px;
      color: var(--text-weak);
      font-size: 15px;
      line-height: 1.75;
    }

    /* ========= CTA ========= */
    .cta-section { padding: 40px 0 80px; }

    .cta-box {
      background: linear-gradient(135deg, #0f172a, #1e3a8a 58%, #155e75);
      border-radius: 24px;
      padding: 56px 40px;
      text-align: center;
      color: #fff;
      position: relative;
      overflow: hidden;
    }

    .cta-box::before {
      content: "";
      position: absolute;
      top: -60%;
      left: -18%;
      width: 520px;
      height: 520px;
      border-radius: 50%;
      background: rgba(6, 182, 212, 0.16);
      filter: blur(64px);
      pointer-events: none;
    }

    .cta-box h2 {
      font-size: clamp(26px, 3.4vw, 36px);
      font-weight: 800;
      margin: 0 0 14px;
      position: relative;
    }

    .cta-box p {
      color: rgba(255, 255, 255, 0.7);
      font-size: 16px;
      max-width: 520px;
      margin: 0 auto 28px;
      position: relative;
    }

    .cta-box .btn { position: relative; }

    /* ========= 页脚 ========= */
    .site-footer {
      background: #0b1120;
      color: #fff;
      padding: 56px 0 28px;
    }

    .footer-grid {
      display: flex;
      justify-content: space-between;
      gap: 40px;
      align-items: flex-start;
      flex-wrap: wrap;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-brand .brand-text {
      font-size: 18px;
      font-weight: 700;
      color: #fff;
    }

    .footer-links {
      display: flex;
      gap: 26px;
      align-items: center;
      flex-wrap: wrap;
    }

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

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

    .footer-copy {
      padding-top: 24px;
      text-align: center;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.35);
    }

    .footer-copy p { margin: 0; }

    /* ========= 动效 ========= */
    .reveal {
      opacity: 0;
      transform: translateY(26px);
      transition: opacity 0.7s ease, transform 0.7s ease;
    }

    .reveal.visible { opacity: 1; transform: none; }

    /* ========= 响应式 ========= */
    @media (max-width: 1199.98px) {
      .step-grid { grid-template-columns: repeat(2, 1fr); }
      .tips-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 1023.98px) {
      .sidebar { display: none; }
      .app-main { margin-left: 0; }
      .mobile-header { display: flex; }
      .page-hero { padding: 64px 0 58px; }
      .section { padding: 60px 0; }
      .split-grid { grid-template-columns: 1fr; gap: 40px; }
      .prep-grid { grid-template-columns: repeat(2, 1fr); }
      .card-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 767.98px) {
      .container { padding: 0 18px; }
      .step-grid,
      .prep-grid,
      .card-grid,
      .tips-grid { grid-template-columns: 1fr; }

      .prep-stats { grid-template-columns: 1fr; gap: 22px; }

      .prep-stat + .prep-stat {
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        padding-top: 20px;
      }

      .split-media img { height: 270px; }
      .cta-box { padding: 40px 22px; }
      .hero-actions .btn { width: 100%; }
      .footer-grid { flex-direction: column; gap: 20px; }
      .faq-item p { padding: 0 18px 18px 18px; }
      .faq-item summary { padding: 16px 18px; }
      .page-hero h1 { font-size: 30px; }
      .page-hero .hero-lead { font-size: 15px; }
    }

    @media (prefers-reduced-motion: reduce) {
      .reveal { opacity: 1; transform: none; transition: none; }
      * { animation: none !important; }
    }