/* roulang page: index */
:root{
      --bg-0:#07111F;
      --bg-1:#081827;
      --bg-2:#0B1E33;
      --blue:#1D7BFF;
      --blue-2:#2A9DFF;
      --cyan:#61E6FF;
      --ice:#A9DFFF;
      --gold:#D8B56D;
      --gold-2:#F2D38A;
      --text:#F8FBFF;
      --muted:#C7D4E7;
      --soft:#7F91AA;
      --weak:#5D6E86;
      --line:rgba(180,210,255,.14);
      --line-gold:rgba(216,181,109,.22);
      --glass:rgba(10,28,48,.62);
      --glass-2:rgba(255,255,255,.06);
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --shadow:0 24px 80px rgba(0,0,0,.38);
      --nav-w:104px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 18% 8%,rgba(29,123,255,.22),transparent 34%),
        radial-gradient(circle at 82% 24%,rgba(216,181,109,.13),transparent 30%),
        radial-gradient(circle at 60% 92%,rgba(97,230,255,.10),transparent 34%),
        linear-gradient(145deg,var(--bg-0),var(--bg-1) 42%,#06101d);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      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;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.72),transparent 78%);
      z-index:-2;
    }
    body:after{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:radial-gradient(circle at 50% 10%,rgba(255,255,255,.05),transparent 18%);
      opacity:.55;
      z-index:-1;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    ::selection{background:rgba(97,230,255,.28);color:#fff}
    .page-shell{min-height:100vh}
    .main-wrap{margin-left:var(--nav-w)}
    .container-x{width:min(1180px,calc(100% - 48px));margin:0 auto}
    .section-pad{padding:96px 0}
    .section-pad-sm{padding:72px 0}
    .glass{
      background:linear-gradient(145deg,rgba(255,255,255,.075),rgba(10,28,48,.58));
      border:1px solid var(--line);
      backdrop-filter:blur(18px) saturate(140%);
      box-shadow:var(--shadow);
    }
    .hairline{height:1px;background:linear-gradient(90deg,transparent,rgba(97,230,255,.35),rgba(216,181,109,.30),transparent)}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(216,181,109,.25);
      border-radius:999px;
      background:rgba(216,181,109,.08);
      color:var(--gold-2);
      font-size:13px;
      letter-spacing:.02em;
      line-height:1;
    }
    .eyebrow:before{
      content:"";
      width:7px;height:7px;border-radius:999px;
      background:var(--cyan);
      box-shadow:0 0 18px rgba(97,230,255,.75);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 22px;
      border-radius:999px;
      font-weight:700;
      transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease,background .25s ease;
      border:1px solid transparent;
      cursor:pointer;
      white-space:nowrap;
    }
    .btn-primary{
      color:#06101d;
      background:linear-gradient(135deg,var(--blue),var(--cyan));
      box-shadow:0 0 28px rgba(29,123,255,.38);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 38px rgba(97,230,255,.42)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.055);
      border-color:rgba(242,211,138,.28);
    }
    .btn-secondary:hover{transform:translateY(-2px);background:rgba(255,255,255,.09);border-color:rgba(97,230,255,.42)}
    a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
      outline:3px solid rgba(97,230,255,.72);
      outline-offset:4px;
      border-radius:14px;
    }
    .side-nav{
      position:fixed;
      left:0;top:0;bottom:0;
      width:var(--nav-w);
      z-index:50;
      padding:18px 12px;
      background:linear-gradient(180deg,rgba(5,16,29,.84),rgba(8,24,39,.68));
      border-right:1px solid var(--line);
      backdrop-filter:blur(18px) saturate(150%);
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:space-between;
    }
    .brand-mark{
      width:76px;
      min-height:76px;
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      border:1px solid rgba(216,181,109,.32);
      border-radius:22px;
      background:radial-gradient(circle at 50% 10%,rgba(242,211,138,.18),rgba(255,255,255,.06));
      box-shadow:0 16px 38px rgba(0,0,0,.30);
    }
    .brand-mark strong{font-size:20px;letter-spacing:.02em;color:var(--gold-2);line-height:1}
    .brand-mark span{font-size:12px;color:var(--muted);margin-top:7px}
    .nav-list{display:flex;flex-direction:column;gap:12px;width:100%;align-items:center}
    .nav-link{
      width:76px;
      min-height:64px;
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:5px;
      color:var(--soft);
      border:1px solid transparent;
      border-radius:18px;
      transition:all .25s ease;
      position:relative;
      font-size:12px;
    }
    .nav-link .ico{font-size:20px;line-height:1}
    .nav-link:hover{color:var(--text);background:rgba(255,255,255,.065);border-color:rgba(97,230,255,.24)}
    .nav-link.active{
      color:var(--text);
      background:linear-gradient(145deg,rgba(29,123,255,.24),rgba(255,255,255,.06));
      border-color:rgba(97,230,255,.35);
    }
    .nav-link.active:before{
      content:"";
      position:absolute;left:-13px;top:14px;bottom:14px;width:3px;border-radius:9px;
      background:linear-gradient(var(--blue),var(--cyan));
      box-shadow:0 0 18px rgba(97,230,255,.65);
    }
    .nav-link.active:after{
      content:"";
      position:absolute;right:10px;top:10px;width:6px;height:6px;border-radius:999px;background:var(--gold-2);
    }
    .side-foot{
      width:76px;
      padding:12px 8px;
      border-radius:18px;
      border:1px solid var(--line-gold);
      background:rgba(216,181,109,.07);
      color:var(--gold-2);
      text-align:center;
      font-size:12px;
      line-height:1.45;
    }
    .mobile-top{display:none}
    .hero{
      position:relative;
      min-height:760px;
      display:flex;
      align-items:center;
      padding:72px 0 42px;
      overflow:hidden;
    }
    .hero-bg{
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(7,17,31,.96),rgba(7,17,31,.72) 48%,rgba(7,17,31,.90)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity:.9;
      z-index:-2;
    }
    .hero-orb{
      position:absolute;
      width:520px;height:520px;border-radius:999px;
      right:-160px;top:110px;
      background:radial-gradient(circle,rgba(29,123,255,.28),transparent 68%);
      filter:blur(6px);
      animation:floatOrb 9s ease-in-out infinite;
      z-index:-1;
    }
    @keyframes floatOrb{
      0%,100%{transform:translate3d(0,0,0)}
      50%{transform:translate3d(-24px,18px,0)}
    }
    .hero-grid{display:grid;grid-template-columns:1.02fr .88fr;gap:44px;align-items:center}
    .hero h1{
      margin:18px 0 18px;
      font-size:clamp(38px,5vw,64px);
      line-height:1.1;
      letter-spacing:-.035em;
      max-width:760px;
    }
    .hero-lead{
      color:var(--muted);
      font-size:18px;
      line-height:1.85;
      max-width:680px;
    }
    .trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
    .trust-badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:9px 12px;
      border-radius:999px;
      color:var(--muted);
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
      font-size:14px;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
    .console{
      border-radius:32px;
      padding:22px;
      position:relative;
      overflow:hidden;
    }
    .console:before{
      content:"";
      position:absolute;
      inset:-1px;
      background:radial-gradient(circle at 20% 0,rgba(97,230,255,.22),transparent 35%),radial-gradient(circle at 90% 20%,rgba(216,181,109,.16),transparent 30%);
      pointer-events:none;
    }
    .console > *{position:relative}
    .console-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
    .status-pill{display:flex;align-items:center;gap:8px;color:var(--ice);font-size:13px}
    .status-dot{width:9px;height:9px;border-radius:999px;background:#42ffb5;box-shadow:0 0 14px rgba(66,255,181,.65)}
    .console-card{
      padding:16px;
      border-radius:20px;
      border:1px solid rgba(180,210,255,.13);
      background:rgba(4,15,27,.45);
      margin-top:12px;
    }
    .console-line{display:flex;align-items:center;justify-content:space-between;gap:16px}
    .console-title{font-weight:800;color:var(--text)}
    .console-note{color:var(--soft);font-size:13px;margin-top:5px}
    .metric-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
    .metric{
      border-radius:18px;
      padding:14px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(180,210,255,.12);
    }
    .metric strong{
      display:block;
      font-size:26px;
      line-height:1.1;
      background:linear-gradient(135deg,var(--gold-2),var(--cyan));
      -webkit-background-clip:text;
      color:transparent;
    }
    .metric span{color:var(--soft);font-size:13px}
    .section-head{max-width:760px;margin-bottom:34px}
    .section-head h2{
      margin:14px 0 12px;
      font-size:clamp(28px,3.3vw,42px);
      line-height:1.18;
      letter-spacing:-.025em;
    }
    .section-head p{color:var(--muted);font-size:17px}
    .module-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:20px;
    }
    .module-card{
      border-radius:var(--radius-xl);
      padding:28px;
      border:1px solid var(--line);
      background:linear-gradient(145deg,rgba(255,255,255,.07),rgba(10,28,48,.55));
      backdrop-filter:blur(18px) saturate(140%);
      transition:transform .25s ease,border-color .25s ease,background .25s ease;
      overflow:hidden;
      position:relative;
    }
    .module-card:hover,.scenario-card:hover,.path-card:hover,.tier-card:hover,.article-card:hover{
      transform:translateY(-4px);
      border-color:rgba(97,230,255,.35);
      background:linear-gradient(145deg,rgba(255,255,255,.095),rgba(10,28,48,.60));
    }
    .module-card.large{min-height:372px;display:flex;flex-direction:column;justify-content:space-between}
    .module-card.large:after{
      content:"";
      position:absolute;right:-80px;bottom:-100px;width:280px;height:280px;border-radius:50%;
      background:radial-gradient(circle,rgba(29,123,255,.24),transparent 67%);
    }
    .module-side{display:grid;gap:20px}
    .module-wide{grid-column:1 / -1;display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center}
    .icon-chip{
      width:48px;height:48px;border-radius:16px;
      display:flex;align-items:center;justify-content:center;
      color:var(--gold-2);
      background:rgba(216,181,109,.10);
      border:1px solid var(--line-gold);
      font-size:22px;
      margin-bottom:18px;
    }
    .module-card h3,.scenario-card h3,.path-card h3,.tier-card h3,.article-card h3{font-size:22px;line-height:1.28;margin:0 0 10px}
    .module-card p,.scenario-card p,.path-card p,.tier-card p,.article-card p{color:var(--muted);margin:0}
    .text-link{
      display:inline-flex;align-items:center;gap:8px;
      margin-top:20px;
      color:var(--cyan);
      font-weight:700;
      transition:gap .2s ease,color .2s ease;
    }
    .text-link:hover{gap:12px;color:var(--gold-2)}
    .cover-box{
      position:relative;
      border-radius:24px;
      overflow:hidden;
      min-height:260px;
      border:1px solid var(--line);
    }
    .cover-box img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
    .cover-box:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,17,31,.10),rgba(7,17,31,.78))}
    .scenario-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px;align-items:start}
    .step-rail{
      border-radius:28px;
      padding:22px;
      border:1px solid var(--line-gold);
      background:rgba(216,181,109,.065);
      position:sticky;
      top:28px;
    }
    .step-item{
      display:flex;gap:12px;align-items:flex-start;
      padding:14px 0;
      border-bottom:1px solid rgba(216,181,109,.16);
    }
    .step-item:last-child{border-bottom:0}
    .step-num{
      width:30px;height:30px;border-radius:999px;flex:0 0 auto;
      display:flex;align-items:center;justify-content:center;
      color:#06101d;background:linear-gradient(135deg,var(--gold-2),var(--cyan));
      font-weight:800;font-size:13px;
    }
    .step-item strong{display:block;color:var(--text)}
    .step-item span{display:block;color:var(--soft);font-size:14px;margin-top:2px}
    .scenario-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .scenario-card,.path-card,.tier-card,.article-card{
      border-radius:24px;
      padding:24px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.055);
      backdrop-filter:blur(18px) saturate(140%);
      transition:transform .25s ease,border-color .25s ease,background .25s ease;
    }
    .case-wrap{
      display:grid;
      grid-template-columns:1fr .9fr;
      gap:24px;
      align-items:stretch;
    }
    .case-image{
      min-height:420px;
      border-radius:32px;
      overflow:hidden;
      position:relative;
      border:1px solid var(--line);
    }
    .case-image img{width:100%;height:100%;object-fit:cover}
    .case-image:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,17,31,.78),rgba(7,17,31,.12),rgba(7,17,31,.82))}
    .case-caption{
      position:absolute;left:24px;right:24px;bottom:24px;z-index:2;
      padding:18px;border-radius:20px;background:rgba(7,17,31,.62);border:1px solid var(--line);backdrop-filter:blur(14px);
    }
    .path-list{display:grid;gap:16px}
    .path-card{display:grid;grid-template-columns:54px 1fr;gap:16px;align-items:start}
    .path-index{
      width:54px;height:54px;border-radius:18px;
      display:flex;align-items:center;justify-content:center;
      border:1px solid rgba(97,230,255,.28);
      background:rgba(29,123,255,.13);
      color:var(--cyan);
      font-weight:900;
    }
    .tier-stack{display:grid;grid-template-columns:.88fr 1.12fr .88fr;gap:18px;align-items:center}
    .tier-card{min-height:330px}
    .tier-card.featured{
      min-height:390px;
      border-color:rgba(242,211,138,.35);
      background:linear-gradient(145deg,rgba(216,181,109,.12),rgba(29,123,255,.12),rgba(255,255,255,.055));
      box-shadow:0 30px 90px rgba(0,0,0,.42),0 0 34px rgba(216,181,109,.12);
    }
    .tier-tag{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(97,230,255,.10);border:1px solid rgba(97,230,255,.22);color:var(--ice);font-size:13px;margin-bottom:16px}
    .tier-list{padding:0;margin:18px 0 0;list-style:none;display:grid;gap:10px;color:var(--muted)}
    .tier-list li{display:flex;gap:9px;align-items:flex-start}
    .tier-list li:before{content:"✓";color:var(--gold-2);font-weight:900}
    .article-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .article-card.with-image{padding:0;overflow:hidden}
    .article-card.with-image .article-img{height:210px;position:relative;overflow:hidden}
    .article-card.with-image img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
    .article-card.with-image:hover img{transform:scale(1.04)}
    .article-card.with-image .article-img:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,17,31,.70))}
    .article-body{padding:24px}
    .article-side{display:grid;gap:20px}
    .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px}
    .tag{
      display:inline-flex;align-items:center;
      padding:5px 10px;border-radius:999px;
      color:var(--ice);background:rgba(97,230,255,.08);
      border:1px solid rgba(97,230,255,.18);
      font-size:13px;
    }
    .faq-list{display:grid;gap:14px}
    details.faq-item{
      border:1px solid var(--line);
      border-radius:20px;
      background:rgba(255,255,255,.055);
      overflow:hidden;
      transition:border-color .25s ease,background .25s ease;
    }
    details.faq-item:hover{border-color:rgba(97,230,255,.32);background:rgba(255,255,255,.075)}
    .faq-item summary{
      list-style:none;
      cursor:pointer;
      padding:20px 22px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:800;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:28px;height:28px;border-radius:999px;
      display:flex;align-items:center;justify-content:center;
      color:var(--cyan);
      background:rgba(97,230,255,.08);
      border:1px solid rgba(97,230,255,.18);
      flex:0 0 auto;
    }
    .faq-item[open] summary:after{content:"−";color:var(--gold-2);border-color:rgba(216,181,109,.24);background:rgba(216,181,109,.08)}
    .faq-item p{padding:0 22px 22px;margin:0;color:var(--muted)}
    .cta-panel{
      position:relative;
      overflow:hidden;
      border-radius:34px;
      padding:42px;
      border:1px solid rgba(97,230,255,.26);
      background:
        radial-gradient(circle at 15% 10%,rgba(97,230,255,.20),transparent 34%),
        radial-gradient(circle at 85% 30%,rgba(216,181,109,.17),transparent 32%),
        linear-gradient(145deg,rgba(255,255,255,.08),rgba(10,28,48,.65));
      backdrop-filter:blur(18px) saturate(140%);
      box-shadow:var(--shadow);
      display:grid;
      grid-template-columns:1fr auto;
      gap:30px;
      align-items:center;
    }
    .cta-panel h2{font-size:clamp(28px,3.2vw,42px);line-height:1.18;margin:0 0 12px}
    .cta-panel p{color:var(--muted);margin:0;max-width:720px}
    .footer{
      margin-left:var(--nav-w);
      padding:54px 0 28px;
      border-top:1px solid var(--line);
      background:linear-gradient(180deg,rgba(7,17,31,.2),rgba(2,8,15,.62));
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr 1fr;gap:28px}
    .footer-brand{display:flex;align-items:center;gap:14px;margin-bottom:16px}
    .footer-logo{
      width:54px;height:54px;border-radius:18px;
      display:flex;align-items:center;justify-content:center;
      color:var(--gold-2);font-weight:900;
      background:rgba(216,181,109,.10);
      border:1px solid var(--line-gold);
    }
    .footer h3{font-size:16px;margin:0 0 14px}
    .footer p,.footer a,.footer li{color:var(--soft);font-size:14px}
    .footer a:hover{color:var(--cyan)}
    .footer ul{padding:0;margin:0;list-style:none;display:grid;gap:9px}
    .copyright{
      margin-top:34px;
      padding-top:20px;
      border-top:1px solid rgba(180,210,255,.10);
      color:var(--weak);
      font-size:13px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:space-between;
    }
    @media (max-width:1023px){
      :root{--nav-w:0px}
      .side-nav{display:none}
      .main-wrap,.footer{margin-left:0}
      .mobile-top{
        display:block;
        position:sticky;
        top:0;
        z-index:60;
        background:rgba(5,16,29,.78);
        border-bottom:1px solid var(--line);
        backdrop-filter:blur(18px) saturate(150%);
      }
      .mobile-bar{
        min-height:68px;
        display:flex;
        align-items:center;
        justify-content:space-between;
        gap:16px;
      }
      .mobile-brand{display:flex;align-items:center;gap:10px;font-weight:900}
      .mobile-brand-badge{
        width:40px;height:40px;border-radius:14px;
        display:flex;align-items:center;justify-content:center;
        color:var(--gold-2);
        border:1px solid var(--line-gold);
        background:rgba(216,181,109,.09);
      }
      .menu-toggle{
        width:46px;height:46px;border-radius:16px;
        color:var(--text);
        border:1px solid var(--line);
        background:rgba(255,255,255,.06);
      }
      .mobile-menu{
        display:none;
        padding:0 0 16px;
      }
      .mobile-menu.open{display:grid;gap:10px}
      .mobile-menu a{
        min-height:48px;
        display:flex;align-items:center;justify-content:space-between;
        padding:0 14px;
        border-radius:16px;
        color:var(--muted);
        background:rgba(255,255,255,.045);
        border:1px solid var(--line);
      }
      .mobile-menu a.active{color:var(--text);border-color:rgba(97,230,255,.32);background:rgba(29,123,255,.14)}
      .hero{min-height:auto;padding:68px 0 40px}
      .hero-grid,.module-grid,.scenario-layout,.case-wrap,.article-grid{grid-template-columns:1fr}
      .module-wide{grid-template-columns:1fr}
      .step-rail{position:relative;top:auto}
      .tier-stack{grid-template-columns:1fr}
      .tier-card,.tier-card.featured{min-height:auto}
      .cta-panel{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      .container-x{width:min(100% - 32px,1180px)}
      .section-pad{padding:68px 0}
      .section-pad-sm{padding:54px 0}
      .hero h1{font-size:38px}
      .hero-lead{font-size:16px}
      .hero-actions{display:grid;grid-template-columns:1fr}
      .btn{width:100%}
      .console{padding:16px;border-radius:24px}
      .metric-grid,.scenario-grid{grid-template-columns:1fr}
      .module-card,.scenario-card,.path-card,.tier-card,.article-body{padding:20px}
      .path-card{grid-template-columns:1fr}
      .case-image{min-height:330px}
      .cta-panel{padding:26px;border-radius:26px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      .trust-row{display:grid;grid-template-columns:1fr}
      .console-line{align-items:flex-start;flex-direction:column}
      .section-head p{font-size:16px}
      .mobile-brand span{font-size:14px}
    }

/* roulang page: category1 */
:root{
      --bg:#07111F;
      --bg-2:#081827;
      --bg-3:#0B1E33;
      --card:rgba(10,28,48,.66);
      --card-2:rgba(255,255,255,.065);
      --text:#F8FBFF;
      --muted:#C7D4E7;
      --weak:#7F91AA;
      --line:rgba(180,210,255,.14);
      --line-gold:rgba(216,181,109,.24);
      --blue:#1D7BFF;
      --blue-2:#2A9DFF;
      --cyan:#61E6FF;
      --ice:#A9DFFF;
      --gold:#D8B56D;
      --gold-2:#F2D38A;
      --radius:24px;
      --shadow:0 24px 80px rgba(0,0,0,.38);
      --nav-w:104px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 20% 4%, rgba(29,123,255,.28), transparent 34%),
        radial-gradient(circle at 88% 24%, rgba(216,181,109,.16), transparent 30%),
        radial-gradient(circle at 78% 92%, rgba(97,230,255,.12), transparent 32%),
        linear-gradient(160deg,var(--bg),var(--bg-2) 48%,#06101b);
      line-height:1.75;
      overflow-x:hidden;
    }
    body:before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.35;
      background-image:
        linear-gradient(rgba(169,223,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(169,223,255,.045) 1px, transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom, #000 0%, transparent 78%);
      z-index:-2;
    }
    body:after{
      content:"";
      position:fixed;
      width:520px;
      height:520px;
      right:-180px;
      top:180px;
      border-radius:999px;
      background:radial-gradient(circle,rgba(97,230,255,.16),transparent 64%);
      filter:blur(18px);
      animation:floatGlow 9s ease-in-out infinite alternate;
      pointer-events:none;
      z-index:-1;
    }
    @keyframes floatGlow{from{transform:translate3d(0,0,0)}to{transform:translate3d(-24px,32px,0)}}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    :focus-visible{outline:3px solid rgba(97,230,255,.78);outline-offset:3px}
    .container-x{width:min(1180px,calc(100% - 40px));margin-inline:auto}
    .main-shell{padding-left:var(--nav-w)}
    .section{padding:86px 0}
    .section-tight{padding:58px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border:1px solid var(--line-gold);
      border-radius:999px;
      color:var(--gold-2);
      background:rgba(216,181,109,.075);
      font-size:13px;
      letter-spacing:.02em;
    }
    .eyebrow:before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--cyan);
      box-shadow:0 0 14px rgba(97,230,255,.75);
    }
    .glass{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      backdrop-filter:blur(18px) saturate(145%);
    }
    .soft-card{
      background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.035));
      border:1px solid var(--line);
      border-radius:22px;
      transition:transform .25s ease,border-color .25s ease,background .25s ease,box-shadow .25s ease;
    }
    .soft-card:hover{
      transform:translateY(-4px);
      border-color:rgba(97,230,255,.36);
      background:linear-gradient(160deg,rgba(255,255,255,.095),rgba(255,255,255,.045));
      box-shadow:0 18px 55px rgba(29,123,255,.16);
    }
    .btn-primary,.btn-secondary{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      min-height:48px;
      padding:13px 20px;
      border-radius:999px;
      font-weight:700;
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease;
      white-space:nowrap;
    }
    .btn-primary{
      color:#04111f;
      background:linear-gradient(135deg,var(--blue),var(--cyan));
      box-shadow:0 0 28px rgba(29,123,255,.38);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 38px rgba(97,230,255,.44)}
    .btn-secondary{
      color:var(--text);
      border:1px solid rgba(216,181,109,.38);
      background:rgba(255,255,255,.055);
    }
    .btn-secondary:hover{transform:translateY(-2px);border-color:rgba(97,230,255,.46);background:rgba(97,230,255,.08)}
    .mobile-top{position:relative;z-index:30}
    .mobile-bar{display:none}
    .side-nav{
      position:fixed;
      left:0;
      top:0;
      bottom:0;
      width:var(--nav-w);
      padding:18px 12px;
      background:rgba(5,15,27,.72);
      border-right:1px solid var(--line);
      backdrop-filter:blur(20px) saturate(150%);
      z-index:40;
      display:flex;
      flex-direction:column;
      align-items:center;
      gap:20px;
    }
    .side-nav-logo{
      width:78px;
      min-height:92px;
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:8px;
      border-radius:22px;
      border:1px solid var(--line-gold);
      background:linear-gradient(180deg,rgba(216,181,109,.12),rgba(29,123,255,.08));
      text-align:center;
      padding:10px 7px;
    }
    .logo-main{
      font-size:13px;
      line-height:1.28;
      color:var(--gold-2);
      font-weight:800;
      word-break:break-word;
    }
    .logo-sub{font-size:10px;color:var(--weak);line-height:1.2}
    .side-nav-links{list-style:none;padding:0;margin:8px 0 0;width:100%;display:grid;gap:12px}
    .side-nav-link{
      min-height:62px;
      border-radius:18px;
      border:1px solid transparent;
      color:var(--weak);
      display:flex;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:4px;
      font-size:12px;
      text-align:center;
      padding:7px 5px;
      transition:all .22s ease;
      position:relative;
    }
    .side-nav-link:hover{
      color:var(--text);
      background:rgba(255,255,255,.055);
      border-color:var(--line);
    }
    .side-nav-link.active{
      color:var(--text);
      background:linear-gradient(180deg,rgba(29,123,255,.22),rgba(97,230,255,.08));
      border-color:rgba(97,230,255,.32);
    }
    .side-nav-link.active:before{
      content:"";
      position:absolute;
      left:-12px;
      top:16px;
      bottom:16px;
      width:3px;
      border-radius:999px;
      background:linear-gradient(var(--blue),var(--cyan));
      box-shadow:0 0 16px rgba(97,230,255,.8);
    }
    .nav-icon{color:var(--gold-2);font-size:18px;line-height:1}
    .side-nav-footer{
      margin-top:auto;
      writing-mode:vertical-rl;
      color:rgba(199,212,231,.46);
      font-size:11px;
      letter-spacing:.06em;
    }
    .mobile-menu{display:none}
    .hero{
      position:relative;
      min-height:560px;
      display:flex;
      align-items:center;
      padding:92px 0 72px;
      overflow:hidden;
    }
    .hero-bg{
      position:absolute;
      inset:0;
      background:
        linear-gradient(90deg,rgba(7,17,31,.95),rgba(7,17,31,.72) 52%,rgba(7,17,31,.92)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      opacity:.86;
      z-index:-3;
    }
    .hero-orb{
      position:absolute;
      width:360px;
      height:360px;
      right:8%;
      top:72px;
      border-radius:999px;
      background:radial-gradient(circle,rgba(29,123,255,.28),transparent 68%);
      filter:blur(8px);
      z-index:-2;
    }
    .hero h1{
      font-size:clamp(34px,5vw,60px);
      line-height:1.1;
      letter-spacing:-.035em;
      margin:22px 0 18px;
      max-width:840px;
    }
    .hero p{color:var(--muted);font-size:18px;max-width:760px}
    .hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:28px;align-items:center}
    .console{
      padding:22px;
      border-radius:30px;
      background:linear-gradient(145deg,rgba(10,28,48,.72),rgba(255,255,255,.055));
      border:1px solid rgba(190,220,255,.18);
      box-shadow:0 28px 90px rgba(0,0,0,.42);
      backdrop-filter:blur(18px) saturate(150%);
    }
    .console-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;color:var(--weak);font-size:13px}
    .status-dot{width:9px;height:9px;border-radius:50%;background:#42f5b3;box-shadow:0 0 16px rgba(66,245,179,.9)}
    .console-row{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:12px;
      align-items:center;
      padding:14px;
      border-radius:18px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(180,210,255,.1);
      margin-top:10px;
    }
    .console-icon{
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#06111f;
      background:linear-gradient(135deg,var(--gold-2),var(--cyan));
      font-weight:900;
    }
    .console-row strong{display:block;color:var(--text);font-size:15px}
    .console-row span{color:var(--weak);font-size:13px}
    .tagbar-wrap{position:sticky;top:0;z-index:25;background:rgba(7,17,31,.74);backdrop-filter:blur(16px);border-bottom:1px solid rgba(180,210,255,.1)}
    .tagbar{display:flex;gap:10px;overflow:auto;padding:14px 0;scrollbar-width:none}
    .tagbar::-webkit-scrollbar{display:none}
    .filter-tag{
      flex:0 0 auto;
      border:1px solid var(--line);
      background:rgba(255,255,255,.055);
      color:var(--muted);
      border-radius:999px;
      padding:9px 15px;
      font-size:14px;
      transition:all .22s ease;
    }
    .filter-tag:hover,.filter-tag.active{
      color:#03111f;
      border-color:rgba(97,230,255,.54);
      background:linear-gradient(135deg,var(--blue-2),var(--cyan));
      box-shadow:0 0 22px rgba(29,123,255,.28);
    }
    .featured{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:0;
      overflow:hidden;
      border-radius:30px;
    }
    .featured-media{position:relative;min-height:360px;overflow:hidden}
    .featured-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
    .featured:hover .featured-media img{transform:scale(1.04)}
    .featured-media:after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg,rgba(7,17,31,.12),rgba(7,17,31,.72));
    }
    .featured-body{padding:34px;display:flex;flex-direction:column;justify-content:center}
    .badge-row{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0}
    .mini-badge{
      color:var(--ice);
      border:1px solid rgba(97,230,255,.24);
      background:rgba(97,230,255,.07);
      padding:6px 10px;
      border-radius:999px;
      font-size:13px;
    }
    .content-layout{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(290px,.8fr);gap:24px;align-items:start}
    .article-list{display:grid;gap:16px}
    .article-card{
      display:grid;
      grid-template-columns:156px 1fr;
      gap:18px;
      padding:16px;
      border-radius:24px;
      background:rgba(255,255,255,.055);
      border:1px solid var(--line);
      transition:all .24s ease;
    }
    .article-card:hover{
      transform:translateY(-3px);
      border-color:rgba(97,230,255,.34);
      background:rgba(255,255,255,.075);
      box-shadow:0 18px 48px rgba(0,0,0,.24);
    }
    .article-thumb{
      position:relative;
      border-radius:18px;
      overflow:hidden;
      min-height:118px;
      background:rgba(255,255,255,.05);
    }
    .article-thumb img{width:100%;height:100%;object-fit:cover}
    .article-thumb:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,17,31,.58))}
    .article-meta{display:flex;flex-wrap:wrap;gap:8px;color:var(--weak);font-size:13px;margin-bottom:6px}
    .article-card h3{font-size:21px;line-height:1.35;margin:0 0 8px}
    .article-card p{color:var(--muted);margin:0 0 10px;font-size:15px;line-height:1.7}
    .read-link{color:var(--cyan);font-weight:700;font-size:14px}
    .read-link:hover{color:var(--gold-2)}
    .sidebar{display:grid;gap:16px;position:sticky;top:74px}
    .side-box{padding:20px;border-radius:24px;background:rgba(255,255,255,.055);border:1px solid var(--line)}
    .side-box h3{font-size:18px;margin:0 0 12px}
    .keyword-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .keyword-cloud span{
      padding:7px 10px;
      border-radius:999px;
      color:var(--muted);
      background:rgba(255,255,255,.06);
      border:1px solid rgba(180,210,255,.11);
      font-size:13px;
    }
    .check-list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .check-list li{
      display:flex;
      gap:10px;
      color:var(--muted);
      font-size:14px;
      line-height:1.6;
    }
    .check-list li:before{
      content:"✓";
      flex:0 0 22px;
      width:22px;
      height:22px;
      border-radius:999px;
      display:grid;
      place-items:center;
      color:#06111f;
      background:linear-gradient(135deg,var(--gold-2),var(--cyan));
      font-size:12px;
      font-weight:900;
      margin-top:2px;
    }
    .banner-cta{
      margin:26px 0;
      padding:26px;
      border-radius:28px;
      background:
        radial-gradient(circle at 16% 0%,rgba(97,230,255,.18),transparent 32%),
        linear-gradient(135deg,rgba(29,123,255,.2),rgba(216,181,109,.12));
      border:1px solid rgba(97,230,255,.24);
      display:grid;
      grid-template-columns:1fr auto;
      gap:18px;
      align-items:center;
    }
    .guide-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .steps{display:grid;gap:14px}
    .step-item{
      display:grid;
      grid-template-columns:auto 1fr;
      gap:14px;
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.052);
      border:1px solid var(--line);
    }
    .step-num{
      width:40px;
      height:40px;
      border-radius:15px;
      display:grid;
      place-items:center;
      color:var(--gold-2);
      background:rgba(216,181,109,.1);
      border:1px solid rgba(216,181,109,.28);
      font-weight:900;
    }
    .note-panel{
      padding:24px;
      border-radius:28px;
      background:
        linear-gradient(180deg,rgba(255,255,255,.075),rgba(255,255,255,.035)),
        url('/assets/images/coverpic/cover-4.webp') center/cover no-repeat;
      background-blend-mode:overlay;
      border:1px solid rgba(216,181,109,.25);
      min-height:100%;
      position:relative;
      overflow:hidden;
    }
    .note-panel:before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg,rgba(7,17,31,.35),rgba(7,17,31,.82));
      z-index:0;
    }
    .note-panel>*{position:relative;z-index:1}
    details.faq-item{
      border:1px solid var(--line);
      border-radius:20px;
      background:rgba(255,255,255,.052);
      padding:0 18px;
      transition:border-color .22s ease,background .22s ease;
    }
    details.faq-item:hover{border-color:rgba(97,230,255,.32);background:rgba(255,255,255,.07)}
    details.faq-item+details.faq-item{margin-top:12px}
    details.faq-item summary{
      cursor:pointer;
      padding:17px 0;
      font-weight:800;
      color:var(--text);
      list-style:none;
      display:flex;
      justify-content:space-between;
      gap:14px;
    }
    details.faq-item summary::-webkit-details-marker{display:none}
    details.faq-item summary:after{content:"＋";color:var(--cyan);font-weight:900}
    details.faq-item[open] summary:after{content:"－";color:var(--gold-2)}
    details.faq-item p{color:var(--muted);margin:0;padding:0 0 18px;font-size:15px}
    .final-cta{
      position:relative;
      overflow:hidden;
      padding:42px;
      border-radius:34px;
      border:1px solid rgba(97,230,255,.22);
      background:
        radial-gradient(circle at 85% 18%,rgba(216,181,109,.2),transparent 28%),
        radial-gradient(circle at 12% 12%,rgba(29,123,255,.28),transparent 34%),
        rgba(10,28,48,.72);
      box-shadow:var(--shadow);
    }
    .footer{
      margin-left:var(--nav-w);
      padding:58px 0 28px;
      border-top:1px solid var(--line);
      background:rgba(4,12,22,.72);
    }
    .footer-grid{display:grid;grid-template-columns:1.3fr .7fr .8fr 1fr;gap:28px}
    .footer-brand{display:flex;gap:14px;align-items:center;margin-bottom:14px}
    .footer-logo{
      width:48px;
      height:48px;
      display:grid;
      place-items:center;
      border-radius:16px;
      color:#06111f;
      background:linear-gradient(135deg,var(--gold-2),var(--cyan));
      font-weight:900;
    }
    .footer p,.footer li{color:var(--weak);font-size:14px;line-height:1.75}
    .footer h3{font-size:16px;margin:0 0 12px;color:var(--text)}
    .footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
    .footer a:hover{color:var(--cyan)}
    .copyright{
      margin-top:34px;
      padding-top:18px;
      border-top:1px solid rgba(180,210,255,.1);
      display:flex;
      justify-content:space-between;
      gap:18px;
      color:rgba(199,212,231,.54);
      font-size:13px;
      flex-wrap:wrap;
    }
    @media (max-width:1023px){
      :root{--nav-w:0px}
      .main-shell,.footer{padding-left:0;margin-left:0}
      .side-nav{display:none}
      .mobile-bar{
        display:flex;
        position:sticky;
        top:0;
        min-height:66px;
        align-items:center;
        justify-content:space-between;
        z-index:50;
        background:rgba(5,15,27,.78);
        border:1px solid rgba(180,210,255,.12);
        border-radius:0 0 22px 22px;
        backdrop-filter:blur(18px);
        padding:10px 14px;
      }
      .mobile-brand{display:flex;align-items:center;gap:10px;font-weight:900;color:var(--text)}
      .mobile-brand-badge{
        width:42px;
        height:42px;
        border-radius:14px;
        display:grid;
        place-items:center;
        color:#06111f;
        background:linear-gradient(135deg,var(--gold-2),var(--cyan));
      }
      .menu-toggle{
        width:44px;
        height:44px;
        border:1px solid var(--line);
        color:var(--text);
        background:rgba(255,255,255,.055);
        border-radius:14px;
      }
      .mobile-menu{
        margin-top:10px;
        padding:10px;
        border-radius:22px;
        background:rgba(5,15,27,.88);
        border:1px solid var(--line);
        backdrop-filter:blur(18px);
      }
      .mobile-menu.open{display:grid;gap:8px}
      .mobile-menu a{
        min-height:46px;
        display:flex;
        justify-content:space-between;
        align-items:center;
        border-radius:15px;
        padding:10px 12px;
        color:var(--muted);
        background:rgba(255,255,255,.04);
      }
      .mobile-menu a.active{color:#04111f;background:linear-gradient(135deg,var(--blue-2),var(--cyan));font-weight:900}
      .hero-grid,.content-layout,.guide-grid{grid-template-columns:1fr}
      .sidebar{position:static}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:767px){
      .container-x{width:min(100% - 28px,1180px)}
      .section{padding:62px 0}
      .hero{padding:58px 0 50px;min-height:auto}
      .hero p{font-size:16px}
      .console{padding:16px;border-radius:24px}
      .featured{grid-template-columns:1fr}
      .featured-media{min-height:230px}
      .featured-media:after{background:linear-gradient(180deg,rgba(7,17,31,.05),rgba(7,17,31,.78))}
      .featured-body{padding:22px}
      .article-card{grid-template-columns:1fr}
      .article-thumb{min-height:190px}
      .banner-cta{grid-template-columns:1fr;padding:22px}
      .final-cta{padding:26px}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:grid}
    }
    @media (max-width:520px){
      .btn-primary,.btn-secondary{width:100%}
      .hero h1{font-size:34px}
      .console-row{grid-template-columns:auto 1fr}
      .console-row .mini-badge{grid-column:1/-1;width:max-content}
    }