/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0b1622;
  --primary-deep: #070e18;
  --primary-light: #152233;
  --surface: #101c2c;
  --surface-light: #1b2a3c;
  --accent: #c9a86a;
  --accent-bright: #e0bd7d;
  --accent-muted: rgba(201,168,106,.15);
  --text: #e9edf2;
  --text-muted: #8596a9;
  --text-dim: #5a6c80;
  --border: rgba(201,168,106,.22);
  --border-light: rgba(255,255,255,.06);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 22px;
  --shadow: 0 12px 40px rgba(0,0,0,.45);
  --shadow-sm: 0 4px 14px rgba(0,0,0,.3);
  --shadow-amber: 0 8px 30px rgba(201,168,106,.18);
  --spacing: 28px;
  --sidebar-width: 250px;
  --font: "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--primary-deep);color:var(--text);line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{text-decoration:none;color:inherit;transition:all .3s ease}
img{max-width:100%;display:block}
button{font-family:var(--font);cursor:pointer;border:none;background:none;color:inherit}
ul,ol{list-style:none}
.container{max-width:1240px;margin:0 auto;padding:0 28px}
::selection{background:var(--accent);color:var(--primary-deep)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
/* ===== App Shell ===== */
.app-shell{display:flex;min-height:100vh}
/* ===== Sidebar 导航 ===== */
.sidebar{width:var(--sidebar-width);background:var(--primary);border-right:1px solid var(--border-light);position:fixed;top:0;left:0;bottom:0;z-index:200;display:flex;flex-direction:column;padding:28px 20px;transition:transform .35s ease;backdrop-filter:blur(20px)}
.sidebar-brand{display:flex;align-items:center;gap:12px;margin-bottom:40px;padding:4px 6px}
.brand-logo{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--accent),#a8844c);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:var(--primary-deep);box-shadow:var(--shadow-amber)}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.5px;color:var(--text);line-height:1.3}
.brand-name small{display:block;font-size:11px;color:var(--text-muted);font-weight:400;letter-spacing:2px;text-transform:uppercase}
.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:var(--radius);color:var(--text-muted);font-size:15px;font-weight:500;transition:all .3s ease;border:1px solid transparent}
.nav-link i{width:20px;text-align:center;font-size:16px}
.nav-link:hover{color:var(--text);background:var(--surface-light);transform:translateX(4px)}
.nav-link.active{color:var(--accent-bright);background:var(--accent-muted);border-color:var(--border);box-shadow:var(--shadow-amber)}
.sidebar-card{margin-top:auto;background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);padding:18px 16px;margin-bottom:16px}
.sidebar-card p{font-size:13px;color:var(--text-muted);line-height:1.5}
.sidebar-card .sc-title{color:var(--accent-bright);font-weight:600;font-size:14px;margin-bottom:4px}
.sidebar-footer{text-align:center;font-size:12px;color:var(--text-dim);padding-top:12px;border-top:1px solid var(--border-light)}
/* ===== 主内容 ===== */
.main-wrap{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column;min-width:0}
.topbar{display:none;height:60px;align-items:center;justify-content:space-between;padding:0 20px;background:var(--primary);border-bottom:1px solid var(--border-light);position:sticky;top:0;z-index:150}
.topbar-logo{font-size:16px;font-weight:700;color:var(--text)}
.menu-btn{font-size:20px;width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--text)}
.menu-btn:hover{background:var(--surface-light)}
/* ===== Hero 首屏 ===== */
.hero{position:relative;min-height:620px;display:flex;align-items:center;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(100deg,rgba(7,14,24,.94) 20%,rgba(7,14,24,.72) 55%,rgba(7,14,24,.35) 100%)}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:120px;background:linear-gradient(transparent,var(--primary-deep))}
.hero-content{position:relative;z-index:2;max-width:680px;padding:80px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:var(--accent-muted);border:1px solid var(--border);color:var(--accent-bright);padding:8px 18px;border-radius:50px;font-size:13px;font-weight:500;margin-bottom:24px;letter-spacing:.5px}
.hero-badge i{font-size:14px}
.hero-title{font-size:54px;line-height:1.15;font-weight:800;color:var(--text);margin-bottom:20px;letter-spacing:-.5px}
.hero-title .gradient{background:linear-gradient(120deg,var(--accent-bright),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:18px;color:var(--text-muted);margin-bottom:36px;line-height:1.7;max-width:540px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 30px;border-radius:50px;font-weight:600;font-size:15px;transition:all .3s ease;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--accent),#a8844c);color:var(--primary-deep);box-shadow:var(--shadow-amber)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 42px rgba(201,168,106,.35)}
.btn-outline{border-color:var(--border);color:var(--text);background:rgba(255,255,255,.03)}
.btn-outline:hover{background:var(--accent-muted);border-color:var(--accent);color:var(--accent-bright);transform:translateY(-3px)}
.hero-meta{display:flex;gap:24px;margin-top:48px;color:var(--text-muted);font-size:14px;flex-wrap:wrap}
.hero-meta span{display:flex;align-items:center;gap:8px}
.hero-meta i{color:var(--accent)}
/* ===== 通用板块 ===== */
.section{padding:90px 0;position:relative}
.section-alt{background:var(--primary)}
.section-head{text-align:center;max-width:640px;margin:0 auto 56px}
.section-tag{display:inline-block;background:var(--accent-muted);color:var(--accent-bright);padding:6px 16px;border-radius:50px;font-size:13px;font-weight:500;letter-spacing:1px;margin-bottom:14px;border:1px solid var(--border)}
.section-title{font-size:38px;font-weight:700;margin-bottom:14px;letter-spacing:-.2px}
.section-subtitle{color:var(--text-muted);font-size:16px;line-height:1.7}
.section-title em{font-style:normal;color:var(--accent-bright)}
/* ===== 核心特性 ===== */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.feature-card{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:36px 28px;transition:all .4s ease;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--accent),transparent);opacity:0;transition:opacity .4s}
.feature-card:hover{transform:translateY(-8px);background:var(--surface-light);border-color:var(--border);box-shadow:var(--shadow)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:64px;height:64px;border-radius:18px;background:var(--accent-muted);display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--accent-bright);margin-bottom:22px;border:1px solid var(--border)}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-muted);line-height:1.7}
/* ===== 分类入口 ===== */
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.category-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-light);transition:all .4s ease;position:relative}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:var(--border)}
.category-cover{height:200px;position:relative;overflow:hidden}
.category-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.category-card:hover .category-cover img{transform:scale(1.08)}
.category-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(7,14,24,.85) 100%)}
.category-info{padding:24px;position:relative}
.category-badge{position:absolute;top:-16px;right:24px;background:linear-gradient(135deg,var(--accent),#a8844c);color:var(--primary-deep);padding:6px 16px;border-radius:50px;font-size:13px;font-weight:700;box-shadow:var(--shadow-sm)}
.category-info h3{font-size:22px;font-weight:600;margin-bottom:8px}
.category-info p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:18px}
.category-link{display:inline-flex;align-items:center;gap:8px;color:var(--accent-bright);font-size:14px;font-weight:500}
.category-link:hover{gap:14px}
/* ===== 资讯列表 ===== */
.news-section{background:var(--primary)}
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{display:block;background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius-lg);padding:26px;transition:all .4s ease;position:relative;overflow:hidden}
.news-card::after{content:'';position:absolute;bottom:0;left:0;width:0;height:3px;background:var(--accent);transition:width .4s ease}
.news-card:hover{background:var(--surface-light);border-color:var(--border);transform:translateY(-4px);box-shadow:var(--shadow)}
.news-card:hover::after{width:100%}
.news-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.news-badge{display:inline-block;background:var(--accent-muted);color:var(--accent-bright);padding:4px 12px;border-radius:50px;font-size:12px;font-weight:500;border:1px solid var(--border)}
.news-date{font-size:13px;color:var(--text-muted);display:flex;align-items:center;gap:6px}
.news-card h3{font-size:18px;font-weight:600;margin-bottom:10px;line-height:1.5}
.news-card p{font-size:14px;color:var(--text-muted);line-height:1.65;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-more{color:var(--accent-bright);font-size:14px;font-weight:500;display:inline-flex;align-items:center;gap:6px}
.news-card:hover .news-more{gap:12px}
.empty-tip{grid-column:1/-1;text-align:center;padding:50px;background:var(--surface);border:1px dashed var(--border);border-radius:var(--radius-lg);color:var(--text-muted)}
/* ===== 数据统计 ===== */
.stats-sec{background:url('/assets/images/backpic/back-2.png') center center/cover fixed;position:relative}
.stats-sec::before{content:'';position:absolute;inset:0;background:rgba(7,14,24,.85)}
.stats-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat-item{text-align:center;padding:36px 20px;background:rgba(255,255,255,.04);border:1px solid var(--border-light);border-radius:var(--radius-lg);backdrop-filter:blur(10px)}
.stat-num{font-size:48px;font-weight:800;color:var(--accent-bright);line-height:1.2;letter-spacing:-1px}
.stat-num span{font-size:24px}
.stat-label{color:var(--text-muted);font-size:14px;margin-top:8px;letter-spacing:1px}
/* ===== 专题 ===== */
.featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.featured-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border-light);transition:all .4s ease}
.featured-card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--border)}
.featured-img{height:220px;overflow:hidden}
.featured-img img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.featured-card:hover .featured-img img{transform:scale(1.06)}
.featured-body{padding:26px}
.featured-body h3{font-size:18px;font-weight:600;margin-bottom:8px}
.featured-body p{font-size:14px;color:var(--text-muted);line-height:1.65;margin-bottom:16px}
.featured-tags{display:flex;gap:8px;flex-wrap:wrap}
.featured-tags span{font-size:12px;background:var(--accent-muted);color:var(--accent-bright);padding:4px 12px;border-radius:50px;border:1px solid var(--border)}
/* ===== FAQ ===== */
.faq-list{max-width:860px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border-light);border-radius:var(--radius);margin-bottom:16px;overflow:hidden;transition:border-color .3s}
.faq-item:hover{border-color:var(--border)}
.faq-item.open{border-color:var(--border)}
.faq-question{padding:22px 26px;display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;font-size:16px;font-weight:500}
.faq-question i{color:var(--accent);transition:transform .4s;font-size:14px;flex-shrink:0}
.faq-item.open .faq-question i{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 26px;color:var(--text-muted);font-size:14px;line-height:1.8}
.faq-item.open .faq-answer{max-height:300px;padding-bottom:22px}
/* ===== CTA ===== */
.cta-sec{background:var(--primary);padding:80px 0}
.cta-box{background:linear-gradient(135deg,var(--surface-light),var(--surface));border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;padding:60px 40px;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;background:var(--accent-muted);filter:blur(40px)}
.cta-box::after{content:'';position:absolute;bottom:-40px;left:-40px;width:160px;height:160px;border-radius:50%;background:var(--accent-muted);filter:blur(30px)}
.cta-box>*{position:relative}
.cta-title{font-size:34px;font-weight:700;margin-bottom:14px}
.cta-text{color:var(--text-muted);font-size:16px;margin-bottom:30px;max-width:480px;margin-left:auto;margin-right:auto}
/* ===== 页脚 ===== */
.site-footer{background:var(--primary-deep);border-top:1px solid var(--border-light);padding:60px 0 0}
.footer-content{display:grid;grid-template-columns:1.5fr 1fr;gap:60px;padding-bottom:40px}
.footer-brand h3{font-size:24px;font-weight:700;margin-bottom:12px;color:var(--text)}
.footer-brand p{color:var(--text-muted);font-size:14px;line-height:1.7;max-width:360px}
.footer-links h4{font-size:15px;font-weight:600;color:var(--text);margin-bottom:16px}
.footer-links a{display:block;color:var(--text-muted);font-size:14px;padding:6px 0;transition:all .3s}
.footer-links a:hover{color:var(--accent-bright);padding-left:8px}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:20px 0;border-top:1px solid var(--border-light);color:var(--text-dim);font-size:13px}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--accent-bright)}
/* ===== 响应式 ===== */
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .category-grid{grid-template-columns:repeat(2,1fr)}
  .featured-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:42px}
}
@media(max-width:768px){
  :root{--sidebar-width:240px}
  .sidebar{transform:translateX(-100%);box-shadow:none}
  .sidebar.open{transform:translateX(0);box-shadow:0 0 60px rgba(0,0,0,.6)}
  .main-wrap{margin-left:0}
  .topbar{display:flex}
  .hero{min-height:500px}
  .hero-title{font-size:34px}
  .hero-subtitle{font-size:16px}
  .section{padding:60px 0}
  .section-title{font-size:30px}
  .news-grid{grid-template-columns:1fr}
  .footer-content{grid-template-columns:1fr;gap:40px}
  .hero-meta{flex-wrap:wrap;gap:14px}
}
@media(max-width:520px){
  .container{padding:0 16px}
  .features-grid,.category-grid,.featured-grid,.stats-grid{grid-template-columns:1fr}
  .hero-title{font-size:28px}
  .hero-buttons{flex-direction:column;width:100%}
  .hero-buttons .btn{justify-content:center}
  .section-title{font-size:25px}
  .cta-box{padding:40px 20px}
  .cta-title{font-size:26px}
  .news-card{padding:20px}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* roulang page: category1 */
/* ====== 设计变量 ====== */
    :root {
      --primary: #d4a853;
      --primary-dark: #b8893d;
      --primary-glow: rgba(212, 168, 83, .28);
      --secondary: #5aaee8;
      --bg-body: #0a111e;
      --bg-panel: #0d1626;
      --bg-card: #131f33;
      --bg-elevated: #1a2941;
      --text-main: #e8edf4;
      --text-soft: #a6b3c4;
      --text-mute: #6e7d92;
      --border-light: rgba(255, 255, 255, .07);
      --border-gold: rgba(212, 168, 83, .22);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 2px 10px rgba(0, 0, 0, .24);
      --shadow-md: 0 10px 32px rgba(0, 0, 0, .34);
      --shadow-lg: 0 20px 56px rgba(0, 0, 0, .5);
      --transition: .25s cubic-bezier(.4, 0, .2, 1);
      --sidebar-w: 248px;
      --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
    }

    /* ====== 基础 Reset ====== */
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--bg-body);
      color: var(--text-main);
      font-family: var(--font-main);
      font-size: 15px;
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition); }
    button, input, select, textarea { font-family: inherit; }
    h1, h2, h3, h4, h5, h6 { margin: 0 0 .6em; line-height: 1.3; font-weight: 700; color: #f2f5fa; }
    p { margin: 0 0 1em; }
    ul { padding: 0; margin: 0; list-style: none; }
    figure { margin: 0; }
    [id] { scroll-margin-top: 88px; }

    ::selection { background: rgba(212,168,83,.35); color: #fff; }

    :focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 3px;
      border-radius: 4px;
    }

    /* ====== 侧边栏导航 ====== */
    .app-sidebar {
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      width: var(--sidebar-w);
      background: linear-gradient(180deg, #0e192c 0%, #0a101d 100%);
      border-right: 1px solid var(--border-light);
      z-index: 100;
      display: flex;
      flex-direction: column;
      padding: 26px 18px 18px;
      overflow-y: auto;
    }
    .sidebar-brand { margin-bottom: 34px; padding: 0 8px; }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0;
    }
    .brand-icon {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(212,168,83,.25), rgba(212,168,83,.06));
      border: 1px solid rgba(212,168,83,.35);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 19px;
      flex-shrink: 0;
    }
    .brand-name {
      font-size: 17px;
      font-weight: 700;
      letter-spacing: .6px;
      white-space: nowrap;
      color: #f2f5fa;
    }
    .sidebar-scroll { flex: 1; }
    .nav-section {
      display: block;
      font-size: 11px;
      letter-spacing: 3px;
      text-transform: uppercase;
      color: var(--text-mute);
      padding: 0 14px 10px;
    }
    .sidebar-nav { display: flex; flex-direction: column; gap: 5px; }
    .nav-link {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px 14px;
      border-radius: 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-soft);
      border: 1px solid transparent;
      position: relative;
      overflow: hidden;
    }
    .nav-link i { width: 20px; text-align: center; font-size: 15px; color: var(--text-mute); transition: color var(--transition); }
    .nav-link:hover {
      background: rgba(255, 255, 255, .055);
      color: #fff;
      transform: translateX(3px);
    }
    .nav-link:hover i { color: var(--primary); }
    .nav-link.active {
      background: linear-gradient(135deg, rgba(212,168,83,.22), rgba(212,168,83,.07));
      color: var(--primary);
      border-color: rgba(212,168,83,.28);
      box-shadow: 0 6px 20px rgba(212,168,83,.08);
    }
    .nav-link.active i { color: var(--primary); }
    .nav-link:active { transform: translateX(1px) scale(.98); }

    .sidebar-footer { margin-top: 30px; padding: 0 4px; }
    .sidebar-card {
      background: rgba(255,255,255,.035);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 16px 16px;
      text-align: center;
    }
    .sidebar-card i { color: var(--primary); font-size: 20px; margin-bottom: 8px; }
    .sidebar-card p {
      margin: 0;
      font-size: 12px;
      color: var(--text-mute);
      letter-spacing: 1px;
      line-height: 1.6;
    }

    /* ====== 移动端顶栏 ====== */
    .mobile-topbar {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: 62px;
      background: rgba(10, 17, 30, .96);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      z-index: 90;
      align-items: center;
      justify-content: space-between;
      padding: 0 18px;
      border-bottom: 1px solid var(--border-light);
    }
    .mobile-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 16px;
      font-weight: 700;
      color: #f2f5fa;
      white-space: nowrap;
    }
    .mobile-brand .brand-icon {
      width: 32px;
      height: 32px;
      font-size: 15px;
      border-radius: 9px;
    }
    .menu-toggle {
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: rgba(255,255,255,.06);
      border: 1px solid rgba(255,255,255,.12);
      color: var(--text-main);
      font-size: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all var(--transition);
    }
    .menu-toggle:hover { background: rgba(255,255,255,.12); border-color: var(--primary); }
    .menu-toggle:active { transform: scale(.95); }

    .sidebar-overlay {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, .62);
      z-index: 89;
      backdrop-filter: blur(2px);
    }
    .sidebar-overlay.show { display: block; }

    /* ====== 主内容区 ====== */
    .main-area {
      margin-left: var(--sidebar-w);
      min-height: 100vh;
      display: flex;
      flex-direction: column;
    }

    /* ====== 容器 ====== */
    .grid-container {
      max-width: 1240px;
      padding-left: 34px;
      padding-right: 34px;
    }

    /* ====== 分类 Hero ====== */
    .category-hero {
      position: relative;
      padding: 76px 0 64px;
      background:
        linear-gradient(135deg, rgba(8, 13, 24, .94) 0%, rgba(14, 26, 44, .86) 45%, rgba(8, 13, 24, .93) 100%),
        url('/assets/images/backpic/back-1.png') center 22% / cover no-repeat;
      border-bottom: 1px solid var(--border-gold);
      overflow: hidden;
    }
    .category-hero::before {
      content: '';
      position: absolute;
      top: -60px;
      right: -60px;
      width: 240px;
      height: 240px;
      background: radial-gradient(circle, rgba(212,168,83,.18), transparent 68%);
      pointer-events: none;
    }
    .category-hero .grid-container { position: relative; }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      background: rgba(212,168,83,.12);
      border: 1px solid rgba(212,168,83,.3);
      color: var(--primary);
      font-size: 12px;
      letter-spacing: 3px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 999px;
      margin-bottom: 22px;
      text-transform: uppercase;
    }
    .hero-badge i { font-size: 13px; }
    .category-hero h1 {
      font-size: clamp(30px, 4.6vw, 46px);
      letter-spacing: 1px;
      margin-bottom: 14px;
      background: linear-gradient(90deg, #f7ead0, var(--primary) 60%, #e8c47e);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-desc {
      max-width: 640px;
      font-size: 16px;
      color: var(--text-soft);
      margin-bottom: 30px;
      line-height: 1.8;
    }
    .hero-stats {
      display: flex;
      gap: 14px;
      flex-wrap: wrap;
    }
    .hero-stat {
      background: rgba(255,255,255,.05);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 14px 20px;
      min-width: 108px;
      text-align: center;
      backdrop-filter: blur(6px);
    }
    .hero-stat strong {
      display: block;
      font-size: 26px;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
    }
    .hero-stat span { font-size: 13px; color: var(--text-soft); }

    /* ====== 通用板块 ====== */
    .section { padding: 76px 0; }
    .section-alt { background: #0c1425; border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
    .section-head { margin-bottom: 42px; max-width: 680px; }
    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      letter-spacing: 3px;
      text-transform: uppercase;
      margin-bottom: 10px;
    }
    .section-tag::before {
      content: '';
      width: 26px;
      height: 1px;
      background: var(--primary);
    }
    .section-title { font-size: clamp(24px, 2.8vw, 32px); letter-spacing: .5px; margin-bottom: 8px; }
    .section-subtitle { color: var(--text-soft); font-size: 15px; }

    /* ====== 分类卡片 ====== */
    .cat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px 24px;
      height: 100%;
      position: relative;
      overflow: hidden;
      transition: all var(--transition);
    }
    .cat-card::before {
      content: '';
      position: absolute;
      inset: 0 0 auto 0;
      height: 3px;
      background: linear-gradient(90deg, var(--primary), transparent);
      opacity: 0;
      transition: opacity var(--transition);
    }
    .cat-card:hover {
      transform: translateY(-5px);
      border-color: rgba(212,168,83,.3);
      box-shadow: var(--shadow-md);
    }
    .cat-card:hover::before { opacity: 1; }
    .cat-card:active { transform: translateY(-2px) scale(.98); }
    .cat-icon {
      width: 52px;
      height: 52px;
      border-radius: 14px;
      background: linear-gradient(135deg, rgba(212,168,83,.22), rgba(212,168,83,.05));
      border: 1px solid rgba(212,168,83,.28);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 21px;
      margin-bottom: 18px;
    }
    .cat-card h3 { font-size: 18px; margin-bottom: 8px; }
    .cat-card p { color: var(--text-soft); font-size: 14px; margin-bottom: 18px; }
    .tag {
      display: inline-block;
      background: rgba(255,255,255,.06);
      border: 1px solid var(--border-light);
      color: var(--text-soft);
      font-size: 12px;
      padding: 4px 12px;
      border-radius: 999px;
      transition: all var(--transition);
    }
    .tag:hover { border-color: var(--primary); color: var(--primary); }

    /* ====== 精选攻略卡片 ====== */
    .guide-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }
    .guide-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all var(--transition);
    }
    .guide-card:hover {
      transform: translateY(-6px);
      border-color: rgba(212,168,83,.32);
      box-shadow: var(--shadow-lg);
    }
    .guide-card:active { transform: translateY(-2px) scale(.985); }
    .guide-cover {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: #0e192c;
    }
    .guide-cover img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s cubic-bezier(.2, .8, .2, 1);
    }
    .guide-card:hover .guide-cover img { transform: scale(1.06); }
    .guide-cover::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 55%, rgba(10,17,30,.55));
    }
    .guide-body { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
    .guide-meta { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
    .badge {
      display: inline-block;
      font-size: 12px;
      font-weight: 600;
      padding: 3px 11px;
      border-radius: 999px;
      background: rgba(90, 174, 232, .15);
      color: var(--secondary);
      border: 1px solid rgba(90, 174, 232, .25);
    }
    .badge-ghost { background: rgba(212,168,83,.1); color: var(--primary); border-color: rgba(212,168,83,.25); }
    .guide-body h3 { font-size: 17px; margin-bottom: 6px; }
    .guide-body p { color: var(--text-soft); font-size: 14px; flex: 1; margin-bottom: 16px; }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      color: var(--primary);
      font-size: 14px;
      font-weight: 600;
    }
    .text-link i { transition: transform var(--transition); font-size: 13px; }
    .text-link:hover { color: #e8c47e; }
    .text-link:hover i { transform: translateX(4px); }

    /* ====== 数据面板 ====== */
    .stat-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }
    .stat-card {
      background: linear-gradient(145deg, var(--bg-elevated), var(--bg-card));
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      text-align: center;
      transition: all var(--transition);
    }
    .stat-card:hover { border-color: rgba(212,168,83,.3); transform: translateY(-4px); box-shadow: var(--shadow-md); }
    .stat-num {
      display: block;
      font-size: 38px;
      font-weight: 800;
      background: linear-gradient(90deg, #f2dfb6, var(--primary));
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
      line-height: 1.2;
      margin-bottom: 6px;
    }
    .stat-label { color: var(--text-soft); font-size: 14px; }

    /* ====== 流程步骤 ====== */
    .step-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
      counter-reset: step;
    }
    .step-item {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px 24px 24px;
      overflow: hidden;
      transition: all var(--transition);
    }
    .step-item:hover { transform: translateY(-4px); border-color: rgba(212,168,83,.3); box-shadow: var(--shadow-md); }
    .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 12px;
      background: linear-gradient(135deg, rgba(212,168,83,.22), rgba(212,168,83,.05));
      border: 1px solid rgba(212,168,83,.3);
      color: var(--primary);
      font-size: 15px;
      font-weight: 700;
      margin-bottom: 16px;
    }
    .step-item h4 { font-size: 17px; margin-bottom: 6px; }
    .step-item p { color: var(--text-soft); font-size: 14px; margin-bottom: 0; }
    .step-item::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 24px;
      right: 24px;
      height: 2px;
      background: linear-gradient(90deg, var(--primary), transparent);
      opacity: 0;
      transition: opacity var(--transition);
    }
    .step-item:hover::after { opacity: 1; }

    /* ====== 时间线 ====== */
    .timeline-wrap { max-width: 860px; margin: 0 auto; }
    .timeline {
      position: relative;
      padding-left: 42px;
    }
    .timeline::before {
      content: '';
      position: absolute;
      left: 13px;
      top: 8px;
      bottom: 8px;
      width: 2px;
      background: linear-gradient(180deg, var(--primary), rgba(212,168,83,.08));
    }
    .timeline-item {
      position: relative;
      padding: 18px 28px 18px 0;
      margin-bottom: 10px;
    }
    .timeline-item::before {
      content: '';
      position: absolute;
      left: -42px;
      top: 26px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 5px rgba(212,168,83,.16), 0 0 18px rgba(212,168,83,.4);
      border: 2px solid #0a111e;
    }
    .timeline-item h4 { font-size: 17px; color: var(--primary); margin-bottom: 4px; }
    .timeline-item p { color: var(--text-soft); font-size: 14px; margin-bottom: 0; }
    .timeline-item + .timeline-item { border-top: 1px dashed rgba(255,255,255,.06); padding-top: 26px; }

    /* ====== FAQ ====== */
    .faq-accordion { display: flex; flex-direction: column; gap: 12px; }
    .faq-accordion .accordion-item {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: border-color var(--transition), box-shadow var(--transition);
    }
    .faq-accordion .accordion-item.is-active { border-color: rgba(212,168,83,.32); box-shadow: var(--shadow-sm); }
    .faq-accordion .accordion-title {
      position: relative;
      background: transparent;
      border: none;
      border-radius: var(--radius-md);
      padding: 18px 56px 18px 22px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      line-height: 1.5;
    }
    .faq-accordion .accordion-title:hover { background: rgba(255,255,255,.045); }
    .faq-accordion .accordion-title::before { display: none; }
    .faq-accordion .accordion-title::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      position: absolute;
      right: 20px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--primary);
      font-size: 14px;
      transition: transform var(--transition);
    }
    .faq-accordion .accordion-item.is-active .accordion-title::after { transform: translateY(-50%) rotate(180deg); }
    .faq-accordion .accordion-content {
      background: transparent;
      border: none;
      border-top: 1px dashed rgba(255,255,255,.08);
      padding: 4px 22px 20px;
      color: var(--text-soft);
      font-size: 14px;
      line-height: 1.8;
    }

    /* ====== CTA ====== */
    .section-cta { padding-bottom: 84px; }
    .cta-box {
      position: relative;
      background:
        radial-gradient(ellipse at 20% 0%, rgba(212,168,83,.16), transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(90,174,232,.12), transparent 50%),
        linear-gradient(135deg, #16283f, #0d182a);
      border: 1px solid rgba(212,168,83,.28);
      border-radius: var(--radius-lg);
      padding: 52px 44px;
      text-align: center;
      overflow: hidden;
    }
    .cta-box::before {
      content: '';
      position: absolute;
      inset: 0;
      background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
      opacity: .08;
      pointer-events: none;
    }
    .cta-box h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 10px; position: relative; }
    .cta-box p { color: var(--text-soft); margin-bottom: 28px; position: relative; }
    .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; }
    .btn-primary,
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      padding: 13px 28px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      border: none;
      transition: all var(--transition);
    }
    .btn-primary {
      background: linear-gradient(135deg, #e2bb6a, var(--primary-dark));
      color: #0d1626;
      box-shadow: 0 8px 24px rgba(184, 137, 61, .35);
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(184, 137, 61, .48); color: #09111e; }
    .btn-primary:active { transform: translateY(0) scale(.97); box-shadow: 0 4px 14px rgba(184, 137, 61, .3); }
    .btn-secondary {
      background: rgba(255,255,255,.06);
      color: var(--text-main);
      border: 1px solid rgba(255,255,255,.18);
      backdrop-filter: blur(4px);
    }
    .btn-secondary:hover { background: rgba(255,255,255,.14); transform: translateY(-2px); border-color: rgba(212,168,83,.4); }
    .btn-secondary:active { transform: translateY(0) scale(.97); }

    /* ====== 页脚 ====== */
    .site-footer {
      margin-left: var(--sidebar-w);
      background: #080e19;
      border-top: 1px solid var(--border-light);
      padding: 48px 0 26px;
      position: relative;
    }
    .footer-content {
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 40px;
      padding-bottom: 30px;
      border-bottom: 1px solid rgba(255,255,255,.06);
      margin-bottom: 24px;
    }
    .footer-brand h3 {
      font-size: 19px;
      color: var(--primary);
      margin-bottom: 10px;
      letter-spacing: .6px;
    }
    .footer-brand p { color: var(--text-mute); font-size: 14px; max-width: 380px; margin: 0; }
    .footer-links h4 {
      font-size: 14px;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: 1px;
    }
    .footer-links {
      display: flex;
      flex-direction: column;
      gap: 9px;
    }
    .footer-links a {
      color: var(--text-soft);
      font-size: 14px;
      width: fit-content;
    }
    .footer-links a:hover { color: var(--primary); padding-left: 5px; }
    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 13px;
      color: var(--text-mute);
    }

    /* ====== 响应式 ====== */
    @media screen and (max-width: 1023px) {
      .app-sidebar {
        transform: translateX(-100%);
        transition: transform .32s cubic-bezier(.4, 0, .2, 1);
        box-shadow: none;
        width: 268px;
      }
      .app-sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
      .mobile-topbar { display: flex; }
      .sidebar-overlay { display: none; }
      .sidebar-overlay.show { display: block; }
      .main-area { margin-left: 0; padding-top: 0; }
      .site-footer { margin-left: 0; }
      .section { padding: 60px 0; }
      .category-hero { padding: 62px 0 52px; }
      .grid-container { padding-left: 26px; padding-right: 26px; }
      .guide-grid { grid-template-columns: repeat(2, 1fr); }
      .stat-grid { grid-template-columns: repeat(2, 1fr); }
      .step-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media screen and (max-width: 720px) {
      .mobile-topbar { height: 58px; }
      .grid-container { padding-left: 20px; padding-right: 20px; }
      .section { padding: 48px 0; }
      .category-hero { padding: 48px 0 42px; }
      .category-hero h1 { font-size: 28px; }
      .hero-desc { font-size: 15px; }
      .hero-stats { gap: 10px; }
      .hero-stat { padding: 11px 14px; min-width: 92px; }
      .hero-stat strong { font-size: 20px; }
      .guide-grid { grid-template-columns: 1fr; }
      .stat-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
      .step-grid { grid-template-columns: 1fr; }
      .cta-box { padding: 38px 22px; }
      .cta-box h2 { font-size: 22px; }
      .cta-actions { flex-direction: column; }
      .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
      .footer-content { grid-template-columns: 1fr; gap: 26px; }
      .footer-bottom { flex-direction: column; text-align: center; }
      .timeline { padding-left: 32px; }
      .timeline::before { left: 10px; }
      .timeline-item::before { left: -32px; width: 10px; height: 10px; }
      .timeline-item { padding: 14px 14px 14px 0; }
    }

    @media screen and (max-width: 520px) {
      body { font-size: 14px; }
      .grid-container { padding-left: 16px; padding-right: 16px; }
      .section-title { font-size: 22px; }
      .stat-grid { grid-template-columns: 1fr; }
      .brand-name { font-size: 15px; }
      .hero-stat { flex: 1; }
    }

    /* ====== 入场动画 ====== */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(24px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .category-hero .grid-container > * { animation: fadeUp .7s ease both; }
    .category-hero .grid-container > :nth-child(2) { animation-delay: .08s; }
    .category-hero .grid-container > :nth-child(3) { animation-delay: .16s; }
    .category-hero .grid-container > :nth-child(4) { animation-delay: .24s; }

/* roulang page: article */
:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  --bg: #f1f5f9;
  --surface: #ffffff;
  --text: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.12);
  --sidebar-width: 260px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  border: 0;
  vertical-align: middle;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
}
ul, ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}
.grid-container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 左侧导航 ===== */
.site-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: linear-gradient(180deg, #0b1120 0%, #111a2c 100%);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  padding: 28px 20px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.35s ease-in-out;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0b1120;
  font-size: 18px;
  box-shadow: 0 6px 16px rgba(245, 158, 11, 0.35);
  flex-shrink: 0;
}
.brand-text {
  color: #ffffff;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.sidebar-close {
  display: none;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  transition: var(--transition);
}
.sidebar-close:hover {
  background: rgba(255, 255, 255, 0.2);
}
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 16px;
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition);
}
.sidebar-nav .nav-link i {
  width: 20px;
  text-align: center;
  font-size: 16px;
  flex-shrink: 0;
}
.sidebar-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  transform: translateX(4px);
}
.sidebar-nav .nav-link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.sidebar-nav .nav-link.active {
  background: var(--accent);
  color: #0b1120;
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
}
.sidebar-tip {
  margin-top: auto;
  padding: 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
}
.tip-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  flex-shrink: 0;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.sidebar-tip p {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
}

/* ===== 移动端顶栏 ===== */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(11, 17, 32, 0.98);
  z-index: 1000;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}
.mobile-logo {
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  white-space: nowrap;
}
.mobile-toggle {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 0;
  transition: var(--transition);
}
.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #fff;
  margin: 2.5px 0;
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-toggle:hover {
  background: rgba(255, 255, 255, 0.15);
}
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s;
}
.sidebar-overlay.active {
  opacity: 1;
}

/* ===== 主内容区 ===== */
.main-wrapper {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid transparent;
  transition: var(--transition);
  line-height: 1.4;
}
.btn i {
  font-size: 15px;
}
.btn-primary {
  background: var(--accent);
  color: #0b1120;
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.28);
}
.btn-primary:hover {
  background: var(--accent-light);
  border-color: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(245, 158, 11, 0.4);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #0b1120;
  transform: translateY(-2px);
}
.btn-light {
  background: #ffffff;
  color: var(--primary);
  border-color: #ffffff;
}
.btn-light:hover {
  background: rgba(255, 255, 255, 0.85);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.15);
}
.btn-lg {
  padding: 14px 34px;
  font-size: 16px;
  border-radius: 12px;
}
.btn-block {
  display: flex;
  width: 100%;
}
.btn:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.5);
  outline-offset: 2px;
}

/* ===== 文章 Banner ===== */
.article-banner {
  position: relative;
  padding: 90px 0 70px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-bottom: 4px solid var(--accent);
}
.article-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(11, 17, 32, 0.92) 0%, rgba(15, 23, 42, 0.78) 100%);
}
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.75);
}
.breadcrumb a:hover {
  color: var(--accent);
}
.breadcrumb i {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}
.breadcrumb span {
  color: var(--accent);
}
.banner-title {
  font-size: 36px;
  line-height: 1.35;
  color: #ffffff;
  margin-bottom: 18px;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.banner-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
}
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(245, 158, 11, 0.18);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-light);
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}
.date-meta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
}

/* ===== 文章主体 ===== */
.article-section {
  padding: 60px 0 20px;
}
.article-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 40px;
}
.article-main-col {
  min-width: 0;
}
.rich-content {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 42px;
  box-shadow: var(--shadow);
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text);
}
.rich-content h2 {
  font-size: 26px;
  margin: 40px 0 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  position: relative;
}
.rich-content h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--accent-dark);
}
.rich-content h3 {
  font-size: 21px;
  margin: 30px 0 12px;
  color: var(--primary);
}
.rich-content p {
  margin: 0 0 16px;
  color: #334155;
}
.rich-content img {
  border-radius: 10px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}
.rich-content ul {
  margin: 16px 0 20px;
  padding-left: 20px;
  list-style: disc;
}
.rich-content ol {
  margin: 16px 0 20px;
  padding-left: 20px;
  list-style: decimal;
}
.rich-content li {
  margin-bottom: 8px;
  line-height: 1.8;
}
.rich-content blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(245, 158, 11, 0.08);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 10px 10px 0;
  color: #475569;
  font-style: italic;
}
.rich-content a {
  color: var(--accent-dark);
  border-bottom: 1px solid rgba(217, 119, 6, 0.3);
}
.rich-content a:hover {
  border-bottom-color: var(--accent-dark);
}
.rich-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14.5px;
}
.rich-content table th,
.rich-content table td {
  border: 1px solid var(--border);
  padding: 12px 16px;
  text-align: left;
}
.rich-content table th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
}
.rich-content table tr:nth-child(even) td {
  background: #f8fafc;
}

/* ===== 文章底部 ===== */
.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag {
  display: inline-flex;
  align-items: center;
  background: #f1f5f9;
  border: 1px solid var(--border);
  color: var(--text-light);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  transition: var(--transition);
}
.tag:hover {
  background: var(--accent);
  color: #0b1120;
  border-color: var(--accent);
}
.article-share {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
  font-size: 14px;
}
.share-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #f8fafc;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  font-size: 14px;
  transition: var(--transition);
}
.share-btn:hover {
  background: var(--accent);
  color: #0b1120;
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ===== 内容未找到 ===== */
.not-found {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 70px 40px;
  text-align: center;
  box-shadow: var(--shadow);
}
.not-found-icon {
  font-size: 44px;
  color: var(--accent);
  margin-bottom: 18px;
}
.not-found h2 {
  font-size: 26px;
  margin-bottom: 12px;
  color: var(--text);
}
.not-found p {
  color: var(--text-light);
  margin-bottom: 26px;
}

/* ===== 侧边栏卡片 ===== */
.article-side-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.side-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226, 232, 240, 0.6);
}
.side-card h4 {
  font-size: 16px;
  color: var(--text);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.side-card h4 i {
  color: var(--accent);
  font-size: 17px;
}
.side-card p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 18px;
}
.side-card-dark {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: none;
}
.side-card-dark h4 {
  color: #fff;
}
.side-card-dark h4 i {
  color: var(--accent);
}
.side-card-dark p {
  color: rgba(255, 255, 255, 0.65);
}
.side-nav-list li {
  border-bottom: 1px solid var(--border);
}
.side-nav-list li:last-child {
  border-bottom: none;
}
.side-nav-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 4px;
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
}
.side-nav-list a i {
  width: 18px;
  text-align: center;
  color: var(--accent);
}
.side-nav-list a:hover {
  color: var(--accent-dark);
  padding-left: 10px;
}

/* ===== 数据统计 ===== */
.stats-section {
  padding: 50px 0;
}
.stats-panel {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: var(--radius);
  padding: 40px;
  position: relative;
  overflow: hidden;
}
.stats-panel::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.1);
}
.stat-item {
  text-align: center;
  position: relative;
  z-index: 1;
}
.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 22px;
  margin: 0 auto 14px;
}
.stat-num {
  font-size: 34px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.2;
  letter-spacing: -0.5px;
}
.stat-label {
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  margin-top: 4px;
}

/* ===== 相关推荐 ===== */
.related-section {
  padding: 30px 0 60px;
}
.section-head {
  text-align: center;
  margin-bottom: 40px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  position: relative;
  display: inline-block;
  margin-bottom: 10px;
}
.section-head h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
}
.section-head p {
  color: var(--text-light);
  font-size: 15px;
}
.related-cards {
  row-gap: 24px;
}
.related-card {
  display: block;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  height: 100%;
  transition: var(--transition);
  border: 1px solid rgba(226, 232, 240, 0.5);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(245, 158, 11, 0.3);
}
.related-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.related-card:hover .related-card-img img {
  transform: scale(1.05);
}
.related-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(11, 17, 32, 0.6) 100%);
}
.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: var(--accent);
  color: #0b1120;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}
.related-card-body {
  padding: 22px;
}
.related-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-body p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.related-card:hover .read-more {
  gap: 10px;
  color: var(--accent);
}

/* ===== FAQ ===== */
.faq-section {
  padding: 60px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-head-light h2 {
  color: var(--text);
}
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(245, 158, 11, 0.4);
}
.faq-item.active {
  border-color: var(--accent);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.12);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}
.faq-question i {
  color: var(--text-light);
  font-size: 14px;
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.active .faq-question {
  color: var(--accent-dark);
}
.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.faq-item.active .faq-answer {
  max-height: 400px;
}
.faq-answer p {
  padding: 0 24px 20px;
  color: var(--text-light);
  font-size: 14.5px;
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  padding: 70px 0 80px;
}
.cta-panel {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: var(--radius);
  padding: 60px 50px;
  text-align: center;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(245, 158, 11, 0.2);
}
.cta-panel::before {
  content: '';
  position: absolute;
  top: -120px;
  left: -120px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.08);
}
.cta-panel::after {
  content: '';
  position: absolute;
  bottom: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.06);
}
.cta-content {
  position: relative;
  z-index: 1;
}
.cta-content h2 {
  color: #ffffff;
  font-size: 30px;
  margin-bottom: 16px;
  font-weight: 800;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 16px;
  max-width: 560px;
  margin: 0 auto 30px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  margin-top: auto;
  background: #0b1120;
  color: rgba(255, 255, 255, 0.6);
  padding: 60px 0 20px;
}
.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand h3 {
  color: #ffffff;
  font-size: 22px;
  margin-bottom: 14px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 360px;
  color: rgba(255, 255, 255, 0.5);
}
.footer-links h4 {
  color: #ffffff;
  font-size: 16px;
  margin-bottom: 16px;
}
.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.footer-links a {
  display: inline-block;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  margin-bottom: 10px;
  transition: var(--transition);
  position: relative;
  padding-left: 0;
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 8px;
}
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom span:last-child {
  font-size: 12px;
  font-family: "SF Mono", Consolas, monospace;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .site-sidebar {
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
  }
  .site-sidebar.open {
    transform: translateX(0);
  }
  .sidebar-close {
    display: flex;
  }
  .main-wrapper {
    margin-left: 0;
  }
  .mobile-header {
    display: flex;
  }
  .main-wrapper {
    padding-top: 60px;
  }
  .article-grid {
    grid-template-columns: 1fr;
  }
  .article-side-col {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .side-card {
    flex: 1 1 calc(50% - 20px);
    min-width: 220px;
  }
  .side-card-dark {
    flex-basis: 100%;
  }
  .stats-panel {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .banner-title {
    font-size: 30px;
  }
}
@media (max-width: 767px) {
  .grid-container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .container {
    padding: 0 18px;
  }
  .article-banner {
    padding: 60px 0 50px;
  }
  .banner-title {
    font-size: 24px;
  }
  .breadcrumb {
    font-size: 13px;
  }
  .article-section {
    padding: 40px 0 10px;
  }
  .rich-content {
    padding: 26px 20px;
    font-size: 15px;
  }
  .rich-content h2 {
    font-size: 21px;
  }
  .rich-content h3 {
    font-size: 18px;
  }
  .article-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .not-found {
    padding: 50px 24px;
  }
  .not-found h2 {
    font-size: 22px;
  }
  .stats-section {
    padding: 35px 0;
  }
  .stats-panel {
    grid-template-columns: repeat(2, 1fr);
    padding: 24px;
    gap: 18px;
  }
  .stat-num {
    font-size: 26px;
  }
  .related-section {
    padding: 30px 0 40px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .faq-section {
    padding: 40px 0;
  }
  .faq-question {
    font-size: 14.5px;
    padding: 16px 18px;
  }
  .faq-answer p {
    padding: 0 18px 16px;
    font-size: 14px;
  }
  .cta-section {
    padding: 40px 0;
  }
  .cta-panel {
    padding: 40px 24px;
  }
  .cta-content h2 {
    font-size: 22px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .article-side-col {
    flex-direction: column;
  }
  .side-card {
    flex-basis: auto;
  }
}
@media (max-width: 520px) {
  .mobile-header {
    padding: 0 14px;
  }
  .mobile-logo {
    font-size: 14px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 15px;
  }
  .sidebar-tip {
    padding: 12px;
  }
  .stats-num {
    font-size: 22px;
  }
  .stat-icon {
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
  .stat-num {
    font-size: 24px;
  }
  .banner-meta {
    gap: 10px;
  }
  .banner-title {
    font-size: 21px;
  }
  .rich-content {
    padding: 22px 16px;
  }
  .cta-panel {
    padding: 30px 18px;
  }
  .cta-content h2 {
    font-size: 20px;
  }
  .related-card-body {
    padding: 18px;
  }
  .related-card-body h3 {
    font-size: 15px;
  }
  .related-card-body p {
    font-size: 13px;
  }
}