/* roulang page: index */
:root{
    --bg-0:#060A12; --bg-1:#0A1120; --bg-2:#0E1729;
    --glass:rgba(255,255,255,.055); --glass-strong:rgba(255,255,255,.09);
    --stroke:rgba(255,255,255,.10); --stroke-hot:rgba(90,140,255,.45);
    --primary:#4C6BFF; --primary-deep:#2540C8;
    --accent:#5FF2C8; --warm:#FF8A4C;
    --text:#E9EFFB; --text-2:#A6B4CC; --text-3:#6F7F9B;
    --radius-s:10px; --radius-m:16px; --radius-l:24px; --radius-pill:999px;
    --shadow-card:0 8px 30px rgba(3,8,20,.55);
    --shadow-glow:0 0 0 1px rgba(95,242,200,.35),0 10px 40px rgba(76,107,255,.35);
    --container:1200px;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;line-height:1.75;letter-spacing:0;color:var(--text);
    background-color:var(--bg-0);
    background-image:
      radial-gradient(900px 620px at 88% -8%, rgba(95,242,200,.08), transparent 62%),
      radial-gradient(920px 720px at -10% 34%, rgba(76,107,255,.10), transparent 66%),
      linear-gradient(180deg,#060A12 0%,#0A1120 100%);
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;cursor:pointer;}
  h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
  h1{font-size:clamp(30px,4vw,52px);font-weight:800;line-height:1.16;}
  h2{font-size:clamp(24px,2.6vw,34px);}
  h3{font-size:20px;font-weight:600;line-height:1.4;}
  p{margin:0 0 1.15em;}
  ul,ol{margin:0;padding:0;list-style:none;}
  a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
    outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;
  }
  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;
    height:72px;display:flex;align-items:center;
    background:transparent;border-bottom:1px solid transparent;
    transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
  }
  .site-header.scrolled{
    background:rgba(8,14,26,.78);
    -webkit-backdrop-filter:blur(16px) saturate(130%);
    backdrop-filter:blur(16px) saturate(130%);
    border-bottom:1px solid var(--stroke);
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;}
  .brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(140deg,var(--primary),var(--primary-deep));
    box-shadow:0 6px 20px rgba(76,107,255,.35);color:#fff;font-weight:800;font-size:16px;
    letter-spacing:-.02em;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
  .brand-text em{font-style:normal;font-size:10px;letter-spacing:.18em;color:rgba(95,242,200,.62);margin-top:3px;}
  .main-nav{display:flex;align-items:center;gap:26px;}
  .nav-link{position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;transition:color .2s ease;}
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
    transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
  }
  .nav-link:hover{color:var(--text);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{color:var(--text);}
  .nav-link.active::before{
    content:"";position:absolute;left:50%;bottom:-9px;width:6px;height:6px;border-radius:50%;
    background:var(--accent);transform:translateX(-50%);
  }
  .nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
  .nav-toggle{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--stroke);
    background:var(--glass);color:var(--text);align-items:center;justify-content:center;
  }
  .nav-toggle span{display:block;width:18px;height:2px;background:currentColor;box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--radius-pill);padding:12px 24px;font-size:14.5px;font-weight:600;
    border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
  }
  .btn-primary{
    background:var(--primary);color:#fff;
    box-shadow:inset 0 -2px 0 rgba(0,0,0,.25),0 6px 18px rgba(37,64,200,.35);
  }
  .btn-primary:hover{box-shadow:var(--shadow-glow);filter:brightness(1.08);transform:translateY(-1px);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text);}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
  .btn-block{width:100%;}
  .link{color:var(--accent);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;transition:text-decoration-thickness .2s ease;}
  .link:hover{text-decoration-thickness:2px;}

  /* ---------- Hero ---------- */
  .hero{position:relative;overflow:hidden;padding:132px 0 64px;border-bottom:1px solid var(--stroke);}
  .hero-bg{
    position:absolute;inset:0;
    background:url(/assets/images/b19247d93b150b60.webp) center/cover no-repeat;
    opacity:.40;
  }
  .hero-bg::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(6,10,18,.74) 0%,rgba(6,10,18,.90) 62%,#060A12 100%);
  }
  .hero-grid{
    position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
    background-size:48px 48px;
    -webkit-mask-image:radial-gradient(70% 60% at 30% 20%,#000,transparent 80%);
    mask-image:radial-gradient(70% 60% at 30% 20%,#000,transparent 80%);
    opacity:.7;
  }
  .hero-inner{position:relative;z-index:2;max-width:860px;}
  .countdown-bar{
    display:inline-flex;align-items:center;gap:12px;flex-wrap:wrap;
    padding:8px 16px;border-radius:var(--radius-pill);
    background:rgba(255,255,255,.06);border:1px solid var(--stroke);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    font-size:13px;color:var(--text-2);margin-bottom:26px;
  }
  .countdown-bar .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(95,242,200,.16);}
  .countdown-bar .cd{font-family:"Barlow Semi Condensed",Arial,sans-serif;color:var(--accent);letter-spacing:.06em;font-weight:600;}
  .countdown-bar .cd b{font-weight:700;}
  .countdown-bar .cd-note{color:var(--text-3);}
  .hero h1{max-width:800px;}
  .hero-lead{max-width:700px;margin-top:22px;font-size:16px;line-height:1.85;color:var(--text-2);}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:46px;padding-top:26px;border-top:1px solid var(--stroke);}
  .hero-stats li{display:flex;flex-direction:column;gap:2px;}
  .hero-stats b{font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:26px;color:var(--accent);letter-spacing:.01em;}
  .hero-stats span{font-size:12.5px;color:var(--text-3);}

  /* ---------- 通用 section ---------- */
  .section{position:relative;padding:88px 0;border-top:1px solid var(--stroke);}
  .section--alt{background:var(--bg-1);}
  .section--tight{padding:34px 0;border-top:1px solid var(--stroke);background:var(--bg-0);}
  .section-head{max-width:780px;margin-bottom:40px;}
  .eyebrow{
    display:inline-block;font-size:12px;letter-spacing:.16em;color:var(--accent);
    padding:5px 12px;border-radius:var(--radius-pill);
    background:rgba(95,242,200,.10);border:1px solid rgba(95,242,200,.30);margin-bottom:16px;
  }
  .section-head h2{margin-bottom:14px;}
  .section-head p{color:var(--text-2);font-size:15px;margin:0;}

  /* ---------- 玻璃卡片 ---------- */
  .glass-card{
    position:relative;background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius-m);
    box-shadow:var(--shadow-card);padding:24px;
    -webkit-backdrop-filter:blur(14px) saturate(120%);backdrop-filter:blur(14px) saturate(120%);
    transition:transform .25s ease,border-color .25s ease,background .25s ease;
    overflow:hidden;
  }
  .glass-card::before{
    content:"";position:absolute;top:0;left:0;width:40px;height:2px;background:var(--accent);
    opacity:0;transition:opacity .25s ease;box-shadow:0 0 12px rgba(95,242,200,.8);
  }
  .glass-card:hover{transform:translateY(-4px);border-color:var(--stroke-hot);}
  .glass-card:hover::before{opacity:1;}

  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);
    font-size:12px;color:var(--accent);background:rgba(95,242,200,.12);border:1px solid rgba(95,242,200,.30);
  }
  .badge-warm{color:var(--warm);background:rgba(255,138,76,.12);border-color:rgba(255,138,76,.34);}

  /* ---------- 保障条 ---------- */
  .trust-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .trust-item{
    display:flex;align-items:center;gap:14px;padding:18px 20px;border-radius:var(--radius-m);
    background:var(--glass);border:1px solid var(--stroke);
  }
  .trust-item svg{width:24px;height:24px;flex:0 0 24px;color:var(--accent);}
  .trust-item b{display:block;font-size:14.5px;font-weight:600;}
  .trust-item span{display:block;font-size:12.5px;color:var(--text-3);}

  /* ---------- 频道入口 ---------- */
  .channel-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:24px;align-items:stretch;}
  .channel-main{display:flex;flex-direction:column;gap:12px;padding:32px;}
  .channel-main h3{font-size:22px;}
  .channel-main p{color:var(--text-2);font-size:14.5px;margin:0;}
  .channel-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
  .channel-item{
    display:flex;align-items:center;gap:10px;padding:16px 18px;border-radius:var(--radius-s);
    background:rgba(255,255,255,.04);border:1px solid var(--stroke);font-size:14.5px;color:var(--text-2);
    transition:all .22s ease;
  }
  .channel-item::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);flex:0 0 6px;opacity:.7;}
  .channel-item:hover{border-color:var(--accent);color:var(--text);background:rgba(95,242,200,.06);}

  /* ---------- 网格 ---------- */
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
  .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}

  /* ---------- 功能卡 ---------- */
  .feature-card .icon-box{
    width:46px;height:46px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
    background:rgba(76,107,255,.16);border:1px solid rgba(76,107,255,.35);color:var(--accent);
  }
  .feature-card .icon-box svg{width:24px;height:24px;}
  .feature-card h3{margin-bottom:10px;}
  .feature-card p{color:var(--text-2);font-size:14px;margin-bottom:16px;}
  .feature-list li{position:relative;padding-left:20px;font-size:13.5px;color:var(--text-2);margin-bottom:8px;}
  .feature-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;background:var(--accent);opacity:.8;}

  /* ---------- 场景卡 ---------- */
  .scene-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
  .scene-thumb{position:relative;aspect-ratio:16/10;background:var(--bg-2);overflow:hidden;}
  .scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;opacity:.92;}
  .scene-card:hover .scene-thumb img{transform:scale(1.05);}
  .scene-body{padding:20px 22px 24px;}
  .scene-body h3{font-size:17px;margin-bottom:8px;}
  .scene-body p{font-size:13.5px;color:var(--text-2);margin:0;}

  /* ---------- 流程 ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:step;}
  .step{padding:26px 22px;border-radius:var(--radius-m);background:var(--glass);border:1px solid var(--stroke);position:relative;}
  .step-no{
    font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:15px;font-weight:700;color:var(--accent);
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;
    background:rgba(95,242,200,.12);border:1px solid rgba(95,242,200,.32);margin-bottom:16px;
  }
  .step h3{font-size:16px;margin-bottom:8px;}
  .step p{font-size:13.5px;color:var(--text-2);margin:0;}

  /* ---------- 数据条 ---------- */
  .stats-strip{
    display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--stroke);
    border:1px solid var(--stroke);border-radius:var(--radius-l);overflow:hidden;
  }
  .stat-cell{background:var(--bg-2);padding:34px 24px;text-align:center;}
  .stat-cell b{
    display:block;font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:36px;
    line-height:1.1;color:var(--accent);letter-spacing:.01em;
  }
  .stat-cell span{display:block;font-size:13px;color:var(--text-3);margin-top:8px;}

  /* ---------- 价格 ---------- */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
  .price-card{display:flex;flex-direction:column;padding:30px 26px;}
  .price-card h3{font-size:18px;margin-bottom:6px;}
  .price-desc{font-size:13px;color:var(--text-3);margin-bottom:20px;}
  .price-num{font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:40px;font-weight:700;color:var(--warm);line-height:1;}
  .price-num small{font-size:14px;color:var(--text-3);font-weight:400;margin-left:4px;}
  .price-list{margin:22px 0 26px;flex:1;}
  .price-list li{font-size:13.5px;color:var(--text-2);padding-left:20px;position:relative;margin-bottom:10px;}
  .price-list li::before{content:"";position:absolute;left:0;top:8px;width:7px;height:7px;border-radius:50%;background:var(--accent);opacity:.75;}
  .price-card--hot{border-color:rgba(95,242,200,.38);box-shadow:var(--shadow-glow);transform:translateY(-8px);}
  .price-card--hot:hover{transform:translateY(-12px);}
  .price-note{font-size:12.5px;color:var(--text-3);margin-top:22px;}

  /* ---------- 专题卡 ---------- */
  .topic-card{padding:0;overflow:hidden;}
  .topic-thumb{aspect-ratio:16/9;background:var(--bg-2);}
  .topic-thumb img{width:100%;height:100%;object-fit:cover;opacity:.9;}
  .topic-body{padding:20px 22px 24px;}
  .topic-body h3{font-size:17px;margin-bottom:8px;}
  .topic-body p{font-size:13.5px;color:var(--text-2);margin-bottom:12px;}
  .topic-meta{font-size:12px;color:var(--text-3);}

  /* ---------- 排行榜 ---------- */
  .rank-list{border:1px solid var(--stroke);border-radius:var(--radius-m);overflow:hidden;background:var(--glass);}
  .rank-row{
    display:flex;align-items:center;gap:18px;padding:18px 24px;border-bottom:1px solid var(--stroke);
    transition:background .2s ease;
  }
  .rank-row:last-child{border-bottom:0;}
  .rank-row:hover{background:rgba(255,255,255,.03);}
  .rank-no{font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:18px;font-weight:700;color:var(--text-3);width:34px;flex:0 0 34px;}
  .rank-row:nth-child(1) .rank-no,.rank-row:nth-child(2) .rank-no,.rank-row:nth-child(3) .rank-no{color:var(--accent);}
  .rank-main{flex:1;min-width:0;}
  .rank-main b{display:block;font-size:15px;font-weight:600;}
  .rank-main span{display:block;font-size:12.5px;color:var(--text-3);}
  .rank-val{font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:15px;color:var(--accent);flex:0 0 auto;}

  /* ---------- 案例卡 ---------- */
  .case-card{display:flex;flex-direction:column;gap:14px;}
  .case-top{display:flex;align-items:center;gap:12px;}
  .case-avatar{width:46px;height:46px;border-radius:50%;overflow:hidden;background:var(--bg-2);flex:0 0 46px;border:1px solid var(--stroke);}
  .case-avatar img{width:100%;height:100%;object-fit:cover;}
  .case-name b{display:block;font-size:14.5px;}
  .case-name span{display:block;font-size:12px;color:var(--text-3);}
  .case-quote{font-size:14px;color:var(--text-2);margin:0;}
  .case-result{font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:14px;color:var(--accent);}

  /* ---------- 评价墙 ---------- */
  .review-grid{columns:2;column-gap:24px;}
  .review-card{
    break-inside:avoid;margin-bottom:24px;padding:22px 24px;border-radius:var(--radius-m);
    background:var(--glass);border:1px solid var(--stroke);position:relative;
    transition:border-color .22s ease,transform .22s ease;
  }
  .review-card:hover{border-color:var(--stroke-hot);transform:translateY(-3px);}
  .review-card::before{
    content:"“";position:absolute;top:6px;right:16px;font-size:44px;line-height:1;
    color:rgba(95,242,200,.20);font-family:Georgia,serif;
  }
  .review-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;}
  .review-head b{font-size:14px;}
  .stars{color:var(--accent);font-size:12.5px;letter-spacing:2px;}
  .review-card p{font-size:13.5px;color:var(--text-2);margin:0;}

  /* ---------- 合作墙 ---------- */
  .partner-wall{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .partner-item{
    display:grid;place-items:center;height:84px;border-radius:var(--radius-s);
    background:rgba(255,255,255,.035);border:1px dashed var(--stroke);
    font-size:14px;color:var(--text-3);filter:grayscale(1);opacity:.8;transition:all .25s ease;
  }
  .partner-item:hover{filter:grayscale(0);opacity:1;color:var(--text);border-color:var(--stroke-hot);}

  /* ---------- 截图 ---------- */
  .shots{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .shot{
    padding:14px;border-radius:var(--radius-l);background:rgba(255,255,255,.04);
    border:1px solid var(--stroke);transition:transform .25s ease,border-color .25s ease;
  }
  .shot:hover{transform:translateY(-4px);border-color:var(--stroke-hot);}
  .shot-img{aspect-ratio:9/16;border-radius:var(--radius-m);overflow:hidden;background:var(--bg-2);}
  .shot-img img{width:100%;height:100%;object-fit:cover;opacity:.92;}
  .shot-cap{margin-top:12px;font-size:13px;color:var(--text-2);text-align:center;}

  /* ---------- 资讯 ---------- */
  .news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .news-card{padding:0;overflow:hidden;display:flex;flex-direction:column;}
  .news-thumb{aspect-ratio:16/9;background:var(--bg-2);overflow:hidden;}
  .news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;opacity:.92;}
  .news-card:hover .news-thumb img{transform:scale(1.05);}
  .news-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
  .news-body h3{font-size:16.5px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .news-body p{font-size:13.5px;color:var(--text-2);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .meta{font-size:12px;color:var(--text-3);margin-top:auto;}
  .empty-state{
    padding:48px 24px;text-align:center;border-radius:var(--radius-m);
    border:1px dashed var(--stroke);background:rgba(255,255,255,.03);color:var(--text-2);
  }
  .empty-state p{margin-bottom:16px;}

  /* ---------- 城市 ---------- */
  .city-grid{display:grid;grid-template-columns:1fr 300px;gap:24px;align-items:start;}
  .city-wall{display:flex;flex-wrap:wrap;gap:10px;}
  .city-pill{
    padding:8px 16px;border-radius:var(--radius-pill);font-size:13.5px;color:var(--text-2);
    background:rgba(255,255,255,.04);border:1px solid var(--stroke);transition:all .2s ease;
  }
  .city-pill:hover{border-color:var(--accent);color:var(--accent);background:rgba(95,242,200,.07);}
  .city-apply h3{font-size:16px;margin-bottom:8px;}
  .city-apply p{font-size:13px;color:var(--text-2);margin-bottom:16px;}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;}
  .faq-item{
    background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius-m);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);overflow:hidden;
  }
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:16px 22px;font-size:15px;font-weight:600;color:var(--text);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary .plus{
    flex:0 0 auto;width:22px;height:22px;position:relative;color:var(--accent);transition:transform .2s ease-out;
  }
  .faq-item summary .plus::before,
  .faq-item summary .plus::after{
    content:"";position:absolute;left:50%;top:50%;background:currentColor;border-radius:2px;transform:translate(-50%,-50%);
  }
  .faq-item summary .plus::before{width:14px;height:2px;}
  .faq-item summary .plus::after{width:2px;height:14px;}
  .faq-item[open] summary .plus{transform:rotate(45deg);}
  .faq-answer{padding:0 22px 20px;font-size:14px;color:var(--text-2);line-height:1.85;}

  /* ---------- 预约表单 ---------- */
  .booking-grid{display:grid;grid-template-columns:1fr 380px;gap:32px;align-items:start;}
  .booking-form{padding:32px;display:flex;flex-direction:column;gap:18px;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
  .form-field{display:flex;flex-direction:column;gap:8px;}
  .form-field label{font-size:13px;color:var(--text-2);}
  .form-field input,.form-field select,.form-field textarea{
    width:100%;height:48px;padding:0 14px;border-radius:12px;font-size:14px;color:var(--text);
    background:rgba(255,255,255,.04);border:1px solid var(--stroke);transition:border-color .2s ease,box-shadow .2s ease;
    font-family:inherit;
  }
  .form-field textarea{height:auto;padding:12px 14px;resize:vertical;min-height:88px;}
  .form-field input::placeholder,.form-field textarea::placeholder{color:var(--text-3);}
  .form-field input:focus,.form-field select:focus,.form-field textarea:focus{
    border-color:var(--accent);box-shadow:0 0 0 3px rgba(95,242,200,.18);outline:none;
  }
  .form-field select option{background:var(--bg-2);color:var(--text);}
  .form-note{font-size:12px;color:var(--text-3);margin:0;line-height:1.7;}
  .form-tip{font-size:13px;color:var(--accent);min-height:18px;margin:0;}
  .hotline-card{display:flex;flex-direction:column;gap:14px;}
  .hotline-card .tel{
    font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:28px;font-weight:700;color:var(--accent);letter-spacing:.02em;
  }
  .hotline-card .hours{font-size:13px;color:var(--text-2);}
  .hotline-card ul li{font-size:13px;color:var(--text-2);padding-left:18px;position:relative;margin-bottom:8px;}
  .hotline-card ul li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.7;}

  /* ---------- 下载条 ---------- */
  .download-bar{
    display:flex;align-items:center;gap:28px;flex-wrap:wrap;justify-content:space-between;
    padding:34px 36px;border-radius:var(--radius-l);border:1px solid var(--stroke);
    background:linear-gradient(120deg,rgba(76,107,255,.16),rgba(10,17,32,.9)),url(/assets/images/0e31915478c04468.webp) center/cover no-repeat;
    box-shadow:var(--shadow-card);
  }
  .download-text{max-width:560px;}
  .download-text h2{font-size:22px;margin-bottom:8px;}
  .download-text p{font-size:13.5px;color:var(--text-2);margin:0;}
  .download-actions{display:flex;gap:12px;flex-wrap:wrap;}
  .qr-box{
    width:104px;height:104px;border-radius:var(--radius-s);border:1px dashed var(--stroke);
    background:rgba(255,255,255,.04);display:grid;place-items:center;font-size:12px;color:var(--text-3);text-align:center;padding:8px;
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--bg-0);border-top:1px solid var(--stroke);padding:64px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
  .footer-col h4{font-size:14px;font-weight:600;margin-bottom:16px;color:var(--text);letter-spacing:.02em;}
  .footer-col p{font-size:13px;color:var(--text-3);line-height:1.8;}
  .footer-col a{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:10px;transition:color .2s ease;}
  .footer-col a:hover{color:var(--accent);}
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-qr{
    width:92px;height:92px;border-radius:var(--radius-s);border:1px dashed var(--stroke);
    background:rgba(255,255,255,.035);display:grid;place-items:center;font-size:11.5px;color:var(--text-3);
    text-align:center;padding:8px;margin-top:16px;
  }
  .footer-bottom{
    border-top:1px solid var(--stroke);padding:22px 0 30px;display:flex;flex-wrap:wrap;gap:12px;
    justify-content:space-between;align-items:center;font-size:12.5px;color:var(--text-3);
  }
  .footer-bottom a{color:var(--text-3);}
  .footer-bottom a:hover{color:var(--accent);}

  /* ---------- 抽屉 ---------- */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(3,6,12,.65);z-index:90;opacity:0;visibility:hidden;
    transition:opacity .25s ease,visibility .25s ease;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;z-index:95;
    background:rgba(10,17,32,.96);border-left:1px solid var(--stroke);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    transform:translateX(100%);transition:transform .28s ease;
    padding:22px 22px 32px;display:flex;flex-direction:column;gap:22px;overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;}
  .drawer-close{
    width:44px;height:44px;border-radius:12px;background:var(--glass);border:1px solid var(--stroke);
    color:var(--text);display:grid;place-items:center;font-size:16px;
  }
  .drawer-nav{display:flex;flex-direction:column;gap:4px;}
  .drawer-nav a{padding:12px 4px;font-size:15px;color:var(--text-2);border-bottom:1px solid var(--stroke);}
  .drawer-nav a:hover,.drawer-nav a.active{color:var(--accent);}
  .drawer-cta{display:flex;flex-direction:column;gap:12px;}
  .drawer-cta .btn{width:100%;}
  .drawer-tel{font-size:13px;color:var(--text-3);}
  .drawer-tel a{display:block;font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:20px;color:var(--accent);margin:6px 0;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1279px){
    .hero{padding:124px 0 56px;}
    .section{padding:76px 0;}
  }
  @media (max-width:1023px){
    .main-nav,.nav-cta{display:none;}
    .nav-toggle{display:flex;}
    .site-header{height:60px;}
    .hero{padding:110px 0 52px;}
    .trust-bar{grid-template-columns:repeat(2,1fr);}
    .grid-3,.grid-4,.price-grid,.news-grid,.steps,.partner-wall,.shots{grid-template-columns:repeat(2,1fr);}
    .channel-grid{grid-template-columns:1fr;}
    .city-grid{grid-template-columns:1fr;}
    .booking-grid{grid-template-columns:1fr;}
    .stats-strip{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .price-card--hot{transform:none;}
    .price-card--hot:hover{transform:translateY(-4px);}
    .review-grid{columns:1;}
    .glass-card{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);}
  }
  @media (max-width:767px){
    body{background-attachment:scroll;}
    .container{padding:0 16px;}
    .section{padding:56px 0;}
    .section--tight{padding:26px 0;}
    .section-head{margin-bottom:28px;}
    .hero{padding:96px 0 44px;}
    .hero-stats{gap:24px;margin-top:34px;}
    .hero-stats b{font-size:22px;}
    .trust-bar{grid-template-columns:1fr;}
    .grid-3,.grid-4,.grid-2,.price-grid,.news-grid,.steps,.partner-wall,.shots,.form-row,.channel-list{grid-template-columns:1fr;}
    .stats-strip{grid-template-columns:1fr;}
    .stat-cell{padding:26px 18px;}
    .stat-cell b{font-size:28px;}
    .download-bar{padding:26px 22px;}
    .qr-box{display:none;}
    .footer-grid{grid-template-columns:1fr;gap:26px;}
    .rank-row{flex-wrap:wrap;gap:8px 14px;padding:16px 18px;}
    .rank-val{width:100%;}
    .countdown-bar{font-size:12px;gap:8px;padding:8px 12px;}
  }

/* roulang page: article */
:root{
  --bg-0:#060A12; --bg-1:#0A1120; --bg-2:#0E1729;
  --glass:rgba(255,255,255,.055); --glass-strong:rgba(255,255,255,.09);
  --stroke:rgba(255,255,255,.10); --stroke-hot:rgba(90,140,255,.45);
  --primary:#4C6BFF; --primary-deep:#2540C8;
  --accent:#5FF2C8; --warm:#FF8A4C;
  --text:#E9EFFB; --text-2:#A6B4CC; --text-3:#6F7F9B;
  --radius-s:10px; --radius-m:16px; --radius-l:24px; --radius-pill:999px;
  --shadow-card:0 8px 30px rgba(3,8,20,.55);
  --shadow-glow:0 0 0 1px rgba(95,242,200,.35),0 10px 40px rgba(76,107,255,.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;padding-top:72px;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:0;color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 88% -8%, rgba(95,242,200,.08), transparent 62%),
    radial-gradient(920px 720px at -10% 34%, rgba(76,107,255,.10), transparent 66%),
    linear-gradient(180deg,#060A12 0%,#0A1120 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;height:72px;display:flex;align-items:center;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.scrolled{
  background:rgba(8,14,26,.78);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--stroke);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:0 6px 20px rgba(76,107,255,.35);color:#fff;font-weight:800;font-size:16px;letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:.18em;color:rgba(95,242,200,.62);margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;transition:color .2s ease;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);}
.nav-link.active::before{
  content:"";position:absolute;left:50%;bottom:-9px;width:6px;height:6px;border-radius:50%;
  background:var(--accent);transform:translateX(-50%);
}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--stroke);
  background:var(--glass);color:var(--text);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);padding:12px 24px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:inset 0 -2px 0 rgba(0,0,0,.25),0 6px 18px rgba(37,64,200,.35);
}
.btn-primary:hover{box-shadow:var(--shadow-glow);filter:brightness(1.08);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.btn-block{width:100%;}

/* ---------- 文章头 ---------- */
.article-hero{position:relative;overflow:hidden;padding:8px 0 46px;border-bottom:1px solid var(--stroke);}
.article-hero-bg{
  position:absolute;inset:0;
  background:url(/assets/images/0e31915478c04468.webp) center/cover no-repeat;
  opacity:.28;
}
.article-hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,10,18,.80) 0%,rgba(6,10,18,.94) 70%,#060A12 100%);
}
.article-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;height:48px;
  font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-3);transition:color .2s ease;}
.breadcrumb a:hover{color:var(--accent);}
.breadcrumb .sep{color:rgba(255,255,255,.22);}
.breadcrumb .now{color:var(--text-2);}
.article-head{max-width:860px;}
.article-title{
  font-size:clamp(26px,3.5vw,40px);line-height:1.3;font-weight:800;
  margin-top:16px;color:var(--text);
}
.article-summary{
  margin-top:16px;max-width:760px;font-size:15.5px;line-height:1.85;color:var(--text-2);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:20px;
  font-size:13px;color:var(--text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.22);}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12px;line-height:1;background:rgba(95,242,200,.12);color:var(--accent);
  border:1px solid rgba(95,242,200,.30);
}
.badge--warm{background:rgba(255,138,76,.12);color:var(--warm);border-color:rgba(255,138,76,.32);}

/* ---------- section ---------- */
.section{position:relative;padding:72px 0;border-top:1px solid var(--stroke);}
.section--alt{background:var(--bg-1);}
.section-head{max-width:760px;margin-bottom:32px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.3;font-weight:700;}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15px;}

/* ---------- 卡片 ---------- */
.card{
  position:relative;background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border:1px solid var(--stroke);border-radius:var(--radius-m);
  box-shadow:var(--shadow-card);
  transition:border-color .25s ease,transform .25s ease;
}
.card:hover{border-color:var(--stroke-hot);transform:translateY(-4px);}
.card::before{
  content:"";position:absolute;top:14px;left:20px;width:0;height:2px;border-radius:2px;
  background:var(--accent);transition:width .25s ease;
}
.card:hover::before{width:40px;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 288px;gap:48px;align-items:start;
  padding:56px 0 0;
}
.article-main{max-width:780px;}

/* 要点卡 */
.key-points{
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius-m);
  padding:24px 26px;margin-bottom:40px;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.key-points h2{font-size:15px;letter-spacing:.12em;color:var(--accent);margin-bottom:14px;}
.key-points li{position:relative;padding-left:20px;font-size:14.5px;color:var(--text-2);margin:8px 0;line-height:1.75;}
.key-points li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:50%;
  border:1px solid var(--accent);
}

/* 正文排版 */
.prose{font-size:16px;line-height:1.85;color:var(--text-2);}
.prose > *:first-child{margin-top:0;}
.prose p{margin:0 0 1.3em;}
.prose h2{
  font-size:clamp(21px,2.4vw,26px);line-height:1.35;color:var(--text);font-weight:700;
  margin:2em 0 .8em;scroll-margin-top:96px;
}
.prose h3{
  font-size:19px;line-height:1.4;color:var(--text);font-weight:600;
  margin:1.6em 0 .6em;scroll-margin-top:96px;
}
.prose h4{font-size:16.5px;color:var(--text);margin:1.4em 0 .5em;}
.prose ul,.prose ol{margin:0 0 1.3em;padding-left:1.35em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin:.42em 0;}
.prose li::marker{color:var(--accent);}
.prose blockquote{
  margin:1.5em 0;padding:16px 22px;border-left:3px solid var(--accent);
  background:rgba(95,242,200,.06);border-radius:0 12px 12px 0;color:var(--text);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:12px;margin:1.5em 0;}
.prose figure{margin:1.5em 0;}
.prose figcaption{font-size:12px;color:var(--text-3);margin-top:8px;text-align:center;}
.prose a{color:var(--accent);text-decoration:underline;text-underline-offset:4px;}
.prose a:hover{text-decoration-thickness:2px;}
.prose strong{color:var(--text);font-weight:600;}
.prose table{width:100%;border-collapse:collapse;margin:1.5em 0;font-size:14.5px;}
.prose th,.prose td{padding:10px 14px;border:1px solid var(--stroke);text-align:left;}
.prose thead th{background:rgba(255,255,255,.06);color:var(--text);font-weight:600;}
.prose tbody tr:nth-child(even){background:rgba(255,255,255,.03);}
.prose code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:6px;font-size:14px;}
.prose hr{border:0;border-top:1px solid var(--stroke);margin:2em 0;}

/* 目录 */
.toc-card{
  position:sticky;top:96px;
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius-m);
  padding:20px;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow-card);
}
.toc-card h3{font-size:12.5px;letter-spacing:.16em;color:var(--text-3);margin-bottom:14px;}
.toc-link{
  display:block;font-size:13.5px;line-height:1.6;color:var(--text-2);
  padding:8px 0 8px 12px;border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.toc-link:hover{color:var(--accent);border-left-color:rgba(95,242,200,.5);}
.toc-link.is-active{color:var(--accent);border-left-color:var(--accent);background:rgba(95,242,200,.06);}
.toc-link--sub{padding-left:24px;font-size:12.5px;color:var(--text-3);}

/* 作者卡 */
.author-card{
  display:flex;align-items:center;gap:16px;margin-top:44px;padding:22px 24px;
  background:var(--glass);border:1px solid var(--stroke);border-radius:var(--radius-m);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.author-avatar{
  width:54px;height:54px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  color:#fff;font-weight:700;font-size:18px;box-shadow:0 6px 18px rgba(76,107,255,.32);
}
.author-info strong{display:block;font-size:15px;color:var(--text);}
.author-info span{display:block;font-size:13px;color:var(--text-3);margin-top:4px;line-height:1.6;}
.author-card .btn{margin-left:auto;}

/* 相关推荐 */
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.related-card{display:flex;flex-direction:column;overflow:hidden;padding:0;}
.related-thumb{position:relative;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden;}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-body{padding:18px 20px 22px;}
.related-body h3{font-size:17px;line-height:1.5;color:var(--text);font-weight:600;}
.related-body p{margin-top:10px;font-size:13.5px;line-height:1.7;color:var(--text-2);}
.related-meta{margin-top:14px;font-size:12px;color:var(--text-3);display:flex;gap:8px;align-items:center;}

/* CTA 条 */
.cta-band{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  padding:32px 34px;border-radius:var(--radius-l);
  background:linear-gradient(120deg,rgba(76,107,255,.16),rgba(95,242,200,.07));
  border:1px solid var(--stroke-hot);
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);line-height:1.35;font-weight:700;color:var(--text);}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hotline{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--accent);
  border-bottom:1px dashed rgba(95,242,200,.45);padding-bottom:2px;
}

/* 返回 */
.back-row{display:flex;flex-wrap:wrap;gap:18px;align-items:center;margin-top:6px;}
.link{
  color:var(--accent);text-decoration:underline;text-underline-offset:4px;
  text-decoration-thickness:1px;font-size:14.5px;transition:.2s ease;
}
.link:hover{text-decoration-thickness:2px;}
.muted{color:var(--text-3);font-size:13px;}

/* 空状态 */
.empty-state{
  padding:56px 28px;text-align:center;border:1px dashed var(--stroke);border-radius:var(--radius-m);
  background:var(--glass);color:var(--text-2);
}
.empty-state strong{display:block;font-size:19px;color:var(--text);margin-bottom:10px;}
.empty-state .btn{margin-top:20px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--stroke);padding:64px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;}
.footer-brand{display:inline-flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-col p{font-size:13.5px;line-height:1.8;color:var(--text-3);margin-bottom:10px;}
.footer-col h4{font-size:14px;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col a{display:block;font-size:13.5px;color:var(--text-3);padding:5px 0;transition:color .2s ease;}
.footer-col a:hover{color:var(--accent);}
.footer-qr{
  margin-top:18px;width:104px;height:104px;border-radius:12px;border:1px dashed var(--stroke);
  display:grid;place-items:center;text-align:center;font-size:12px;line-height:1.6;color:var(--text-3);
  background:rgba(255,255,255,.03);
}
.footer-bottom{
  border-top:1px solid var(--stroke);padding:22px 0 28px;display:flex;flex-wrap:wrap;
  justify-content:space-between;gap:12px;font-size:12.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-toggle{display:inline-flex;z-index:92;}
  .nav-cta{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;width:min(86vw,340px);height:100vh;height:100dvh;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;
    padding:82px 22px 150px;
    background:rgba(8,14,26,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-left:1px solid var(--stroke);
    transform:translateX(105%);transition:transform .3s ease;z-index:90;overflow-y:auto;
  }
  body.nav-open .main-nav{transform:translateX(0);}
  .main-nav .nav-link{padding:14px 0;font-size:16px;border-bottom:1px solid rgba(255,255,255,.07);}
  .main-nav .nav-link.active::before{display:none;}
  .main-nav .nav-link.active{color:var(--accent);}
  body.nav-open .nav-cta{
    display:flex;position:fixed;right:0;bottom:0;width:min(86vw,340px);
    flex-direction:column;gap:10px;padding:18px 22px 26px;z-index:91;
    background:linear-gradient(180deg,rgba(8,14,26,0),rgba(8,14,26,.97) 45%);
  }
  body.nav-open .nav-cta .btn{width:100%;}

  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;padding-top:44px;}
  .article-main{max-width:none;}
  .toc-card{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
  .section{padding:56px 0;}
  .cta-band{grid-template-columns:1fr;padding:26px 24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:639px){
  .container{padding:0 16px;}
  body{font-size:15.5px;}
  .brand-text strong{font-size:14.5px;}
  .brand-text em{font-size:9px;}
  .article-hero{padding-bottom:34px;}
  .article-title{font-size:24px;}
  .article-summary{font-size:14.5px;}
  .related-grid{grid-template-columns:1fr;gap:16px;}
  .section{padding:44px 0;}
  .key-points{padding:20px;}
  .cta-band{padding:22px 18px;border-radius:var(--radius-m);}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:6px;}
  .author-card{flex-wrap:wrap;}
  .author-card .btn{margin-left:0;width:100%;}
  .back-row{flex-direction:column;align-items:flex-start;gap:10px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
}

/* roulang page: category1 */
:root{
  --bg-0:#060A12; --bg-1:#0A1120; --bg-2:#0E1729;
  --glass:rgba(255,255,255,.055); --glass-strong:rgba(255,255,255,.09);
  --stroke:rgba(255,255,255,.10); --stroke-hot:rgba(90,140,255,.45);
  --primary:#4C6BFF; --primary-deep:#2540C8;
  --accent:#5FF2C8; --warm:#FF8A4C;
  --text:#E9EFFB; --text-2:#A6B4CC; --text-3:#6F7F9B;
  --radius-s:10px; --radius-m:16px; --radius-l:24px; --radius-pill:999px;
  --shadow-card:0 8px 30px rgba(3,8,20,.55);
  --shadow-glow:0 0 0 1px rgba(95,242,200,.35),0 10px 40px rgba(76,107,255,.35);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:0;color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(900px 620px at 88% -8%, rgba(95,242,200,.08), transparent 62%),
    radial-gradient(920px 720px at -10% 34%, rgba(76,107,255,.10), transparent 66%),
    linear-gradient(180deg,#060A12 0%,#0A1120 100%);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{
  outline:2px solid var(--accent);outline-offset:3px;border-radius:6px;
}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:72px;display:flex;align-items:center;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease;
}
.site-header.scrolled{
  background:rgba(8,14,26,.78);
  -webkit-backdrop-filter:blur(16px) saturate(130%);
  backdrop-filter:blur(16px) saturate(130%);
  border-bottom:1px solid var(--stroke);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--primary),var(--primary-deep));
  box-shadow:0 6px 20px rgba(76,107,255,.35);color:#fff;font-weight:800;font-size:16px;letter-spacing:-.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:16px;font-weight:700;letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:10px;letter-spacing:.18em;color:rgba(95,242,200,.62);margin-top:3px;}
.main-nav{display:flex;align-items:center;gap:26px;}
.nav-link{position:relative;font-size:14.5px;color:var(--text-2);padding:6px 0;transition:color .2s ease;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left;transition:transform .22s ease;
}
.nav-link:hover{color:var(--text);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--text);}
.nav-link.active::before{
  content:"";position:absolute;left:50%;bottom:-9px;width:6px;height:6px;border-radius:50%;
  background:var(--accent);transform:translateX(-50%);
}
.nav-cta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--stroke);
  background:var(--glass);color:var(--text);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;box-shadow:0 -6px 0 currentColor,0 6px 0 currentColor;}

/* 抽屉 */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:320px;max-width:88vw;z-index:120;
  background:#080E1A;border-left:1px solid var(--stroke);
  transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  padding:20px;display:flex;flex-direction:column;gap:22px;overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--stroke);
  background:var(--glass);color:var(--text);font-size:20px;line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;}
.drawer-nav a{padding:13px 8px;border-radius:var(--radius-s);color:var(--text-2);font-size:15px;border-bottom:1px solid rgba(255,255,255,.06);}
.drawer-nav a:hover,.drawer-nav a.active{color:var(--accent);}
.drawer-cta{display:flex;flex-direction:column;gap:10px;}
.drawer-tel{font-size:13px;color:var(--text-3);}
.drawer-tel a{color:var(--accent);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(3,7,14,.66);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .3s ease;z-index:110;
}
.drawer-mask.open{opacity:1;pointer-events:auto;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);padding:12px 24px;font-size:14.5px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:inset 0 -2px 0 rgba(0,0,0,.25),0 6px 18px rgba(37,64,200,.35);
}
.btn-primary:hover{box-shadow:var(--shadow-glow);filter:brightness(1.08);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--stroke);color:var(--text);}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);}
.btn-block{width:100%;}

/* ---------- 通用 section ---------- */
.section{position:relative;padding:80px 0;border-top:1px solid var(--stroke);}
.section--alt{background:var(--bg-1);}
.section-head{max-width:780px;margin-bottom:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--accent);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.7;}
.section-head h2{font-size:clamp(23px,3vw,32px);line-height:1.3;font-weight:700;letter-spacing:-.01em;margin:0 0 12px;}
.section-head p{color:var(--text-2);font-size:15px;line-height:1.8;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:var(--radius-pill);
  font-size:12px;line-height:1;color:var(--accent);
  background:rgba(95,242,200,.12);border:1px solid rgba(95,242,200,.30);
}

/* ---------- 分类头 ---------- */
.category-hero{position:relative;padding:126px 0 56px;border-bottom:1px solid var(--stroke);overflow:hidden;}
.category-hero .hero-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(720px 380px at 84% 0%,rgba(95,242,200,.10),transparent 68%),
    radial-gradient(760px 420px at -4% 62%,rgba(76,107,255,.12),transparent 70%);
}
.category-hero .hero-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(62% 70% at 26% 24%,#000,transparent 82%);
  mask-image:radial-gradient(62% 70% at 26% 24%,#000,transparent 82%);
}
.ch-grid{position:relative;display:grid;grid-template-columns:1.45fr 1fr;gap:44px;align-items:center;}
.ch-grid h1{font-size:clamp(27px,3.9vw,42px);line-height:1.22;font-weight:800;letter-spacing:-.01em;margin:0 0 18px;}
.ch-intro{color:var(--text-2);font-size:15.5px;line-height:1.85;max-width:640px;}
.ch-stats{display:flex;flex-wrap:wrap;gap:40px;margin-top:26px;padding-top:20px;border-top:1px solid var(--stroke);}
.ch-stats li{display:flex;flex-direction:column;gap:2px;}
.ch-stats b{font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:26px;line-height:1.15;color:var(--accent);}
.ch-stats span{font-size:12.5px;color:var(--text-3);}
.ch-figure{
  position:relative;overflow:hidden;border-radius:var(--radius-m);border:1px solid var(--stroke);
  background:var(--bg-2);aspect-ratio:16/10;box-shadow:var(--shadow-card);margin:0;
}
.ch-figure img{width:100%;height:100%;object-fit:cover;opacity:.92;}
.ch-figure figcaption{
  position:absolute;left:14px;bottom:14px;font-size:12px;padding:6px 12px;border-radius:var(--radius-pill);
  background:rgba(8,14,26,.8);border:1px solid var(--stroke);color:var(--accent);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}

/* ---------- 分类入口 ---------- */
.chip-grid{display:flex;flex-wrap:wrap;gap:12px;}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:var(--radius-pill);
  border:1px solid var(--stroke);background:var(--glass);color:var(--text-2);font-size:14px;
  transition:all .22s ease;
}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:.6;transition:opacity .22s ease;}
.chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);background:rgba(95,242,200,.06);}
.chip:hover::before{opacity:1;}

/* ---------- 文章列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-m);
  background:var(--glass);border:1px solid var(--stroke);box-shadow:var(--shadow-card);
  transition:transform .24s ease,border-color .24s ease,background .24s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:var(--stroke-hot);background:var(--glass-strong);}
.post-cover{position:relative;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden;}
.post-cover img{width:100%;height:100%;object-fit:cover;opacity:.88;transition:opacity .24s ease,transform .3s ease;}
.post-card:hover .post-cover img{opacity:1;transform:scale(1.03);}
.post-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;}
.post-title{font-size:18px;font-weight:600;line-height:1.5;color:var(--text);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card:hover .post-title{color:var(--accent);}
.post-excerpt{
  font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);margin-top:2px;}
.post-meta i{font-style:normal;opacity:.5;}
.list-more{display:flex;justify-content:center;margin-top:36px;}
.list-empty{
  border:1px dashed var(--stroke);border-radius:var(--radius-m);background:var(--glass);
  padding:40px 24px;text-align:center;color:var(--text-2);font-size:14.5px;
}
.list-empty p{margin-bottom:16px;}

/* ---------- 精选专题 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.topic-card{
  position:relative;display:flex;flex-direction:column;gap:10px;padding:24px 22px;
  border-radius:var(--radius-m);border:1px solid var(--stroke);background:var(--glass);
  box-shadow:var(--shadow-card);transition:transform .24s ease,border-color .24s ease;
}
.topic-card::before{
  content:"";position:absolute;left:22px;top:0;width:40px;height:2px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 12px rgba(95,242,200,.6);opacity:0;transition:opacity .24s ease;
}
.topic-card:hover{transform:translateY(-4px);border-color:var(--stroke-hot);}
.topic-card:hover::before{opacity:1;}
.topic-card h3{font-size:18px;font-weight:600;line-height:1.45;}
.topic-card p{font-size:14px;line-height:1.75;color:var(--text-2);}
.topic-card .topic-count{margin-top:auto;font-size:12.5px;color:var(--warm);}

/* ---------- 术语词典 ---------- */
.term-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;}
.term-card{
  padding:20px;border-radius:var(--radius-s);border:1px solid var(--stroke);
  background:var(--glass);transition:border-color .24s ease,transform .24s ease;
}
.term-card:hover{border-color:var(--stroke-hot);transform:translateY(-3px);}
.term-card h3{font-size:15.5px;font-weight:600;margin-bottom:6px;color:var(--text);}
.term-card p{font-size:13px;line-height:1.7;color:var(--text-2);}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  border-radius:var(--radius-m);border:1px solid var(--stroke);background:var(--glass);
  transition:border-color .24s ease,background .24s ease;
}
.faq-item:hover{border-color:var(--stroke-hot);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;cursor:pointer;list-style:none;
  font-size:15.5px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:var(--accent);
  transition:transform .2s ease-out;
}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-answer{padding:0 22px 20px;font-size:14.5px;line-height:1.8;color:var(--text-2);}
.faq-item[open]{background:var(--glass-strong);}

/* ---------- 时间线 ---------- */
.timeline{position:relative;max-width:820px;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:var(--stroke);}
.timeline li{position:relative;padding:0 0 26px 0;}
.timeline li:last-child{padding-bottom:0;}
.timeline li::before{
  content:"";position:absolute;left:-25px;top:8px;width:9px;height:9px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--accent);box-shadow:0 0 10px rgba(95,242,200,.5);
}
.timeline h3{font-size:15.5px;font-weight:600;margin-bottom:4px;}
.timeline p{font-size:13.5px;color:var(--text-2);line-height:1.75;}
.timeline time{display:block;font-size:12px;color:var(--text-3);margin-bottom:4px;letter-spacing:.04em;}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-l);border:1px solid var(--stroke);
  background:
    radial-gradient(560px 260px at 88% 0%,rgba(95,242,200,.12),transparent 70%),
    linear-gradient(120deg,rgba(76,107,255,.18),rgba(10,17,32,.9));
  box-shadow:var(--shadow-card);
  padding:44px;
  display:grid;grid-template-columns:1.5fr 1fr;gap:36px;align-items:center;
}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.32;margin-bottom:12px;letter-spacing:-.01em;}
.cta-band p{font-size:14.5px;line-height:1.85;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}
.cta-side{
  border-radius:var(--radius-m);border:1px solid var(--stroke);background:rgba(6,10,18,.55);
  padding:24px;backdrop-filter:blur(12px);
}
.cta-side span{display:block;font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-bottom:8px;}
.cta-side strong{display:block;font-family:"Barlow Semi Condensed",Arial,sans-serif;font-size:26px;color:var(--accent);letter-spacing:.02em;}
.cta-side p{font-size:13px;color:var(--text-2);margin-top:10px;line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-0);border-top:1px solid var(--stroke);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:16px;color:var(--text);letter-spacing:.02em;}
.footer-col p{font-size:13.5px;line-height:1.8;color:var(--text-2);margin-bottom:10px;}
.footer-col a{display:block;font-size:13.5px;color:var(--text-2);margin-bottom:9px;transition:color .2s ease,padding-left .2s ease;}
.footer-col a:hover{color:var(--accent);padding-left:3px;}
.footer-qr{
  width:118px;height:118px;border-radius:var(--radius-s);border:1px dashed var(--stroke);
  background:var(--bg-2);display:grid;place-items:center;text-align:center;
  font-size:12px;line-height:1.6;color:var(--text-3);margin-top:18px;
}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  border-top:1px solid var(--stroke);margin-top:40px;padding-top:20px;
  font-size:12.5px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .main-nav,.nav-cta{display:none;}
  .nav-toggle{display:flex;}
  .ch-grid{grid-template-columns:1fr;gap:30px;}
  .term-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .topic-grid{grid-template-columns:1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px 28px;gap:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .section{padding:56px 0;}
  .category-hero{padding:104px 0 44px;}
  .post-grid{grid-template-columns:1fr;gap:18px;}
  .chip-grid{gap:10px;}
  .chip{padding:10px 16px;font-size:13.5px;}
  .ch-stats{gap:28px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
}
@media (max-width:640px){
  .container{padding:0 16px;}
  body{font-size:15px;}
  .term-grid{grid-template-columns:1fr;}
  .cta-band{padding:30px 22px;}
  .ch-figure{aspect-ratio:16/10;}
  .section-head h2{font-size:22px;}
  .hero-stats,.ch-stats{gap:22px;}
}
@media (max-width:420px){
  .btn{padding:11px 18px;font-size:14px;}
  .brand-text strong{font-size:14.5px;}
}