/* roulang page: index */
:root{
    --ink:#1a1f3d;
    --ink-2:#232a52;
    --ink-3:#111528;
    --gold:#ffb400;
    --gold-2:#ffd166;
    --gold-deep:#a4700a;
    --bg:#f5f6fb;
    --surface:#ffffff;
    --text:#1c2033;
    --muted:#5e6784;
    --line:#e3e7f2;
    --radius:14px;
    --radius-lg:22px;
    --shadow-xs:0 1px 3px rgba(26,31,61,.05);
    --shadow-sm:0 4px 14px rgba(26,31,61,.07);
    --shadow-md:0 14px 34px rgba(26,31,61,.11);
    --shadow-lg:0 28px 70px rgba(26,31,61,.2);
    --maxw:1200px;
    --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font-family:var(--font);color:var(--text);line-height:1.7;background:
    radial-gradient(1200px 500px at 85% -10%,rgba(255,180,0,.10),transparent 60%),
    radial-gradient(900px 420px at 5% 0%,rgba(26,31,61,.08),transparent 65%),
    var(--bg);
    -webkit-font-smoothing:antialiased;font-size:15px}
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit}
  p{margin:0}
  :focus-visible{outline:3px solid rgba(255,180,0,.6);outline-offset:2px;border-radius:8px}

  /* ---------- header ---------- */
  .site-header{position:sticky;top:0;z-index:60;background:rgba(17,21,40,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
  .header-inner{max-width:var(--maxw);margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:16px}
  .brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
  .brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#ffc233,#ff8a00);color:#231a00;font-weight:800;display:grid;place-items:center;font-size:18px;box-shadow:0 8px 18px rgba(255,154,0,.35)}
  .brand-text{font-weight:700;font-size:17px;letter-spacing:.6px}
  .search-box{position:relative;flex:1 1 auto;max-width:420px;min-width:0}
  .search-box input{width:100%;padding:9px 14px 9px 38px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);color:#fff;font-size:14px;transition:.2s}
  .search-box input::placeholder{color:rgba(255,255,255,.48)}
  .search-box input:focus{outline:none;background:rgba(255,255,255,.15);border-color:rgba(255,180,0,.65);box-shadow:0 0 0 3px rgba(255,180,0,.18)}
  .search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;opacity:.6}
  .header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
  .ver-pill{font-size:12px;color:var(--gold-2);border:1px solid rgba(255,180,0,.38);background:rgba(255,180,0,.12);padding:4px 10px;border-radius:999px;white-space:nowrap}
  .lang-btn{color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.16);background:transparent;padding:6px 12px;border-radius:999px;font-size:13px;transition:.2s;white-space:nowrap}
  .lang-btn:hover{background:rgba(255,255,255,.12);color:#fff}
  .menu-btn{display:none;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00);border:none;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;transition:.2s}
  .menu-btn:hover{filter:brightness(1.05)}

  /* ---------- layout ---------- */
  .layout{max-width:var(--maxw);margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1fr;gap:0;align-items:start}
  .doc-sidebar{display:none}
  .doc-sidebar{padding:26px 0 40px}
  .sidebar-label{font-size:11.5px;letter-spacing:.18em;color:#98a0bb;margin:0 0 10px;font-weight:700}
  .side-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px}
  .side-nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;font-size:14.5px;font-weight:600;color:#3b4266;transition:.18s}
  .side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:#c9cfe4;transition:.18s;flex:0 0 auto}
  .side-nav a:hover{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
  .side-nav a:hover::before{background:var(--gold)}
  .side-nav a.active{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
  .side-nav a.active::before{background:var(--gold)}
  .side-toc{display:flex;flex-direction:column;gap:1px;border-left:2px solid var(--line);padding-left:12px;margin-bottom:26px}
  .side-toc a{font-size:13.5px;color:var(--muted);padding:5px 0;transition:.18s}
  .side-toc a:hover{color:var(--ink);transform:translateX(3px)}
  .side-toc a.active{color:var(--ink);font-weight:700}
  .sidebar-note{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:var(--shadow-xs)}
  .sidebar-note p{font-size:12px;color:var(--muted);letter-spacing:.1em}
  .sidebar-note strong{display:block;font-size:26px;color:var(--ink);line-height:1.2;margin:2px 0}
  .sidebar-note span{font-size:12.5px;color:var(--muted)}

  /* ---------- buttons ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;border:none;transition:transform .18s,box-shadow .18s,background .18s,filter .18s;cursor:pointer}
  .btn-gold{background:linear-gradient(135deg,#ffc233,#ff9a00);color:#231a00;box-shadow:0 12px 26px rgba(255,154,0,.32)}
  .btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,154,0,.42)}
  .btn-gold:active{transform:translateY(0);filter:brightness(.96)}
  .btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.26)}
  .btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}

  /* ---------- hero ---------- */
  .hero{position:relative;margin-top:26px;border-radius:var(--radius-lg);overflow:hidden;color:#fff;background:linear-gradient(120deg,#111528 0%,#1a1f3d 55%,#2a2050 100%);box-shadow:var(--shadow-lg)}
  .hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;opacity:.34}
  .hero-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(80% 90% at 18% 8%,rgba(255,180,0,.20),transparent 62%),linear-gradient(180deg,rgba(17,21,40,.35),rgba(17,21,40,.94))}
  .hero-inner{position:relative;padding:38px 24px;display:grid;gap:34px;grid-template-columns:1fr}
  .hero-eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--gold-2);background:rgba(255,180,0,.16);border:1px solid rgba(255,180,0,.32);padding:5px 13px;border-radius:999px;margin-bottom:16px}
  .hero-title{margin:0 0 14px;font-size:clamp(26px,4.2vw,44px);line-height:1.28;font-weight:800;letter-spacing:-.6px}
  .hero-sub{margin:0 0 16px;font-size:15px;color:var(--gold-2);font-weight:600}
  .hero-text{margin:0;font-size:14.8px;line-height:1.9;color:rgba(255,255,255,.82);max-width:640px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 22px}
  .hero-stats{list-style:none;display:flex;flex-wrap:wrap;gap:26px;margin:0;padding:18px 0 0;border-top:1px solid rgba(255,255,255,.14)}
  .hero-stats strong{display:block;font-size:19px;font-weight:800;color:#fff;line-height:1.3}
  .hero-stats span{display:block;font-size:12.5px;color:rgba(255,255,255,.62);margin-top:2px}
  .hero-poster{position:relative}
  .poster-card{position:relative;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:13px;backdrop-filter:blur(8px);box-shadow:0 22px 50px rgba(0,0,0,.35);transition:transform .3s ease}
  .poster-card img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:12px}
  .hot-badge{position:absolute;top:24px;right:24px;z-index:2;font-size:12px;font-weight:800;color:#231a00;background:linear-gradient(135deg,#ffd166,#ffab00);padding:5px 12px;border-radius:999px;box-shadow:0 8px 18px rgba(0,0,0,.3)}
  .poster-body{padding:14px 6px 4px}
  .poster-tag{font-size:12px;letter-spacing:.14em;color:var(--gold-2);margin:0 0 6px}
  .poster-title{margin:0 0 8px;font-size:17px;font-weight:800;color:#fff}
  .poster-desc{margin:0 0 12px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.72)}
  .poster-tags{display:flex;flex-wrap:wrap;gap:8px}
  .poster-tags span{font-size:12px;color:rgba(255,255,255,.86);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);padding:3px 10px;border-radius:999px}

  /* ---------- sections ---------- */
  .section{padding:54px 0;border-top:1px solid var(--line)}
  .section-head{max-width:800px;margin-bottom:28px}
  .eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.16em;color:var(--gold-deep);background:rgba(255,180,0,.15);padding:5px 13px;border-radius:999px;margin-bottom:12px}
  .section-title{margin:0 0 12px;font-size:clamp(21px,2.6vw,29px);line-height:1.36;font-weight:800;color:var(--ink);letter-spacing:-.3px}
  .section-lead{margin:0;color:var(--muted);font-size:15.2px;line-height:1.9}

  /* ---------- cards ---------- */
  .card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-xs);transition:transform .22s,box-shadow .22s,border-color .22s}
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#e2e6f3}
  .card-icon{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-size:20px;background:linear-gradient(140deg,#fff4d6,#ffe4a6);margin-bottom:14px}
  .card h3{margin:0 0 8px;font-size:16.5px;font-weight:700;color:var(--ink)}
  .card p{margin:0;font-size:14px;line-height:1.78;color:var(--muted)}
  .card-tag{display:inline-block;margin-top:14px;font-size:12px;color:#8a5b00;background:#fff5da;border-radius:999px;padding:4px 11px}

  .grid-4{display:grid;gap:18px;grid-template-columns:1fr}
  .grid-3{display:grid;gap:18px;grid-template-columns:1fr}

  /* ---------- pain ---------- */
  .pain-list{list-style:none;padding:0;margin:0;display:grid;gap:14px}
  .pain-item{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-xs);transition:.2s}
  .pain-item:hover{box-shadow:var(--shadow-sm);transform:translateX(3px);border-color:#e4e7f4}
  .pain-num{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:#eef1fb;color:var(--ink);font-weight:800;font-size:13px}
  .pain-item h3{margin:0 0 5px;font-size:15.5px;font-weight:700;color:var(--ink)}
  .pain-item p{margin:0;font-size:14px;line-height:1.78;color:var(--muted)}

  /* ---------- scene ---------- */
  .scene-grid{display:grid;gap:30px;grid-template-columns:1fr;align-items:center}
  .scene-figure{position:relative;margin:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md);background:#fff}
  .scene-figure img{width:100%;aspect-ratio:16/11;object-fit:cover}
  .scene-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:34px 18px 16px;background:linear-gradient(transparent,rgba(14,18,36,.88));color:#fff;font-size:13.5px;line-height:1.6}
  .steps{list-style:none;margin:0;padding:0}
  .step{position:relative;padding:0 0 26px 46px}
  .step:last-child{padding-bottom:0}
  .step:not(:last-child)::before{content:"";position:absolute;left:16px;top:36px;bottom:2px;width:2px;background:linear-gradient(#ffd166,#e3e7f2)}
  .step-dot{position:absolute;left:0;top:0;width:33px;height:33px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:var(--gold);font-weight:800;font-size:13.5px;box-shadow:0 8px 18px rgba(26,31,61,.22)}
  .step h3{margin:0 0 6px;font-size:16px;font-weight:700;color:var(--ink)}
  .step p{margin:0;font-size:14px;line-height:1.8;color:var(--muted)}

  /* ---------- fan cards ---------- */
  .fan-grid{display:grid;gap:12px;grid-template-columns:repeat(2,1fr)}
  .fan-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:15px;transition:.2s;box-shadow:var(--shadow-xs)}
  .fan-card:hover{border-color:rgba(255,180,0,.6);box-shadow:var(--shadow-sm);transform:translateY(-2px)}
  .fan-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
  .fan-name{font-weight:700;color:var(--ink);font-size:14.5px}
  .fan-fan{font-size:11.5px;color:#a06a00;background:#fff5da;border-radius:999px;padding:2px 8px;white-space:nowrap}
  .fan-desc{margin:7px 0 0;font-size:12.8px;color:var(--muted);line-height:1.65}

  /* ---------- channels ---------- */
  .channel-grid{display:grid;gap:18px;grid-template-columns:1fr}
  .channel-card{position:relative;display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-xs);overflow:hidden;transition:.24s}
  .channel-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,#ffb400,#ff8a00);opacity:0;transition:.24s}
  .channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#ecdfbe}
  .channel-card:hover::before{opacity:1}
  .channel-num{font-size:12px;letter-spacing:.16em;color:#9aa2bd;font-weight:700}
  .channel-title{margin:8px 0 10px;font-size:18px;font-weight:800;color:var(--ink)}
  .channel-desc{margin:0;font-size:14px;line-height:1.78;color:var(--muted)}
  .channel-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:13.5px;font-weight:700;color:var(--gold-deep)}
  .channel-card:hover .channel-more g{transform:translateX(3px)}

  /* ---------- rewards ---------- */
  .reward-grid{display:grid;gap:16px;grid-template-columns:1fr}
  .reward-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-xs);transition:.22s}
  .reward-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
  .reward-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font-size:22px;background:linear-gradient(140deg,#eef1fb,#e2e7f8);margin-bottom:12px}
  .reward-title{margin:0 0 6px;font-size:15.5px;font-weight:700;color:var(--ink)}
  .reward-cond{margin:0 0 12px;font-size:12.8px;color:var(--muted)}
  .reward-value{display:inline-block;font-size:13px;font-weight:700;color:#8a5b00;background:#fff5da;border-radius:8px;padding:6px 11px}
  .reward-foot{margin-top:18px;font-size:13.5px;color:var(--muted)}
  .reward-foot a{color:var(--gold-deep);font-weight:700}

  /* ---------- progress ---------- */
  .progress-grid{display:grid;gap:26px;grid-template-columns:1fr}
  .task{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px;box-shadow:var(--shadow-xs)}
  .task-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:9px}
  .task-head b{font-size:14.2px;color:var(--ink);font-weight:700}
  .task-head span{font-size:12.8px;color:var(--muted);white-space:nowrap}
  .bar{height:8px;border-radius:999px;background:#eaeef8;overflow:hidden}
  .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#ffc233,#ff9a00)}
  .summary-card{background:linear-gradient(150deg,#1a1f3d,#272d5c);color:#e8ebf7;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-md)}
  .summary-card h3{margin:0 0 10px;font-size:17px;font-weight:800;color:#fff}
  .summary-card p{margin:0 0 14px;font-size:13.8px;line-height:1.8;color:rgba(255,255,255,.76)}
  .summary-card ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
  .summary-card li{font-size:13.2px;color:rgba(255,255,255,.86);display:flex;gap:8px;align-items:flex-start}
  .summary-card li::before{content:"◆";color:var(--gold);font-size:9px;line-height:1.9}

  /* ---------- reviews ---------- */
  .review-wall{columns:1;column-gap:16px}
  .review-card{break-inside:avoid;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;margin:0 0 16px;box-shadow:var(--shadow-xs);transition:.22s}
  .review-card:hover{box-shadow:var(--shadow-sm);border-color:#e0e4f1}
  .review-text{margin:0 0 12px;font-size:14px;line-height:1.82;color:#333a55}
  .review-meta{display:flex;align-items:center;gap:9px;font-size:12.5px;color:var(--muted)}
  .review-avatar{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:800;color:#5a3a00;background:linear-gradient(140deg,#ffd166,#ffb400)}

  /* ---------- dark panel ---------- */
  .dark-panel{position:relative;overflow:hidden;background:linear-gradient(135deg,#151a33,#1e2448 58%,#2b2350);border-radius:var(--radius-lg);padding:40px 26px;color:#fff;box-shadow:var(--shadow-md)}
  .dark-panel::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 85% at 88% 8%,rgba(255,180,0,.20),transparent 62%);pointer-events:none}
  .dark-inner{position:relative}
  .dark-title{margin:0 0 10px;font-size:clamp(20px,2.4vw,27px);font-weight:800;color:#fff;letter-spacing:-.2px}
  .dark-lead{margin:0 0 26px;font-size:14.6px;line-height:1.85;color:rgba(255,255,255,.74);max-width:680px}
  .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .stat-item strong{display:block;font-size:clamp(26px,3.2vw,38px);font-weight:800;color:var(--gold-2);letter-spacing:-1px;line-height:1.15}
  .stat-item span{display:block;margin-top:6px;font-size:12.8px;color:rgba(255,255,255,.66)}

  /* ---------- news ---------- */
  .news-grid{display:grid;gap:26px;grid-template-columns:1fr}
  .news-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:12px;box-shadow:var(--shadow-xs);transition:.2s}
  .news-item:hover{border-color:#e9dcbc;box-shadow:var(--shadow-sm);transform:translateX(3px)}
  .news-date{flex:0 0 66px;font-size:12.5px;color:var(--muted);padding-top:2px}
  .news-body{display:block;min-width:0}
  .news-title{display:block;font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:5px;line-height:1.55}
  .news-desc{display:block;font-size:13.5px;line-height:1.72;color:var(--muted)}
  .news-tag{display:inline-block;margin-top:9px;font-size:11.8px;color:#8a5b00;background:#fff5da;border-radius:999px;padding:2px 10px}
  .side-posts{display:grid;gap:14px}
  .side-post{display:flex;gap:12px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;box-shadow:var(--shadow-xs);transition:.2s}
  .side-post:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}
  .side-post img{width:76px;height:60px;object-fit:cover;border-radius:8px;flex:0 0 auto}
  .side-post-title{display:block;font-size:13.4px;font-weight:600;color:var(--ink);line-height:1.55}
  .side-post-meta{display:block;margin-top:5px;font-size:11.8px;color:var(--muted)}
  .empty-note{font-size:14px;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:12px;padding:22px;text-align:center}

  /* ---------- plans ---------- */
  .plan-grid{display:grid;gap:18px;grid-template-columns:1fr}
  .plan-card{position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow-xs);transition:.22s}
  .plan-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
  .plan-card.featured{border-color:rgba(255,180,0,.72);box-shadow:0 20px 44px rgba(255,180,0,.16)}
  .plan-badge{position:absolute;top:-12px;left:22px;font-size:12px;font-weight:700;color:#3a2600;background:linear-gradient(135deg,#ffd166,#ffab00);padding:4px 12px;border-radius:999px;box-shadow:0 8px 16px rgba(255,154,0,.32)}
  .plan-name{margin:0 0 6px;font-size:17px;font-weight:800;color:var(--ink)}
  .plan-sub{margin:0 0 16px;font-size:13px;color:var(--muted)}
  .plan-list{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:9px}
  .plan-list li{position:relative;padding-left:22px;font-size:13.8px;line-height:1.65;color:#3d4463}
  .plan-list li::before{content:"✓";position:absolute;left:0;top:0;font-size:12px;font-weight:800;color:#c98c00}
  .plan-foot{margin-top:auto;font-size:12.8px;color:var(--muted)}

  /* ---------- trust ---------- */
  .trust-grid{display:grid;gap:16px;grid-template-columns:1fr}
  .trust-item{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:12px;padding:17px;box-shadow:var(--shadow-xs);transition:.2s}
  .trust-item:hover{box-shadow:var(--shadow-sm);transform:translateY(-2px)}
  .trust-ico{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-size:16px;background:#fff5da}
  .trust-item h3{margin:0 0 4px;font-size:14.4px;font-weight:700;color:var(--ink)}
  .trust-item p{margin:0;font-size:12.9px;line-height:1.65;color:var(--muted)}

  /* ---------- faq ---------- */
  .faq{display:grid;gap:12px;max-width:880px}
  .faq details{background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow-xs);overflow:hidden;transition:.2s}
  .faq details[open]{border-color:rgba(255,180,0,.55);box-shadow:var(--shadow-sm)}
  .faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;font-size:15px;font-weight:600;color:var(--ink);transition:.18s}
  .faq summary:hover{color:var(--gold-deep)}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";font-size:19px;font-weight:800;color:#c08a00;transition:.2s}
  .faq details[open] summary::after{content:"−"}
  .faq details p{padding:0 20px 18px;font-size:14px;line-height:1.88;color:var(--muted)}

  /* ---------- lead form ---------- */
  .lead-panel{position:relative;overflow:hidden;background:linear-gradient(135deg,#141834,#1d2346 55%,#2c2350);border-radius:var(--radius-lg);padding:40px 26px;color:#fff;box-shadow:var(--shadow-lg)}
  .lead-panel::before{content:"";position:absolute;inset:0;background:radial-gradient(55% 80% at 90% 0%,rgba(255,180,0,.22),transparent 62%);pointer-events:none}
  .lead-grid{position:relative;display:grid;gap:32px;grid-template-columns:1fr}
  .lead-title{margin:0 0 12px;font-size:clamp(21px,2.6vw,29px);font-weight:800;letter-spacing:-.3px;color:#fff}
  .lead-text{margin:0 0 18px;font-size:14.6px;line-height:1.88;color:rgba(255,255,255,.78)}
  .lead-points{list-style:none;margin:0;padding:0;display:grid;gap:9px}
  .lead-points li{display:flex;gap:9px;align-items:flex-start;font-size:13.6px;color:rgba(255,255,255,.86)}
  .lead-points li::before{content:"◆";color:var(--gold);font-size:9px;line-height:2}
  .lead-form{display:grid;gap:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:22px;backdrop-filter:blur(6px)}
  .field label{display:block;font-size:12.6px;color:#c6cce4;margin-bottom:6px;font-weight:600}
  .field input,.field select,.field textarea{width:100%;padding:11px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;font-size:14px;font-family:inherit;transition:.2s}
  .field input::placeholder,.field textarea::placeholder{color:rgba(255,255,255,.42)}
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:rgba(255,180,0,.75);box-shadow:0 0 0 3px rgba(255,180,0,.18);background:rgba(255,255,255,.12)}
  .field select option{color:#1a1f3d}
  .field textarea{resize:vertical;min-height:84px}
  .form-note{font-size:12.2px;color:rgba(255,255,255,.55);line-height:1.7}
  .form-feedback{display:none;font-size:13px;color:var(--gold-2);background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.34);border-radius:10px;padding:10px 13px;line-height:1.65}
  .form-feedback.show{display:block}

  /* ---------- footer ---------- */
  .site-footer{background:var(--ink-3);color:#b9c0d8;margin-top:64px}
  .footer-inner{max-width:var(--maxw);margin:0 auto;padding:52px 20px 0;display:grid;gap:34px;grid-template-columns:1fr}
  .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16.5px;margin-bottom:14px}
  .footer-desc{margin:0;font-size:13.4px;line-height:1.88;color:#98a1bf;max-width:360px}
  .footer-title{margin:0 0 14px;font-size:12px;letter-spacing:.16em;color:#8a93b3;font-weight:700}
  .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:9px}
  .footer-links a{font-size:13.8px;color:#c2c9e0;transition:.2s}
  .footer-links a:hover{color:var(--gold-2)}
  .footer-bottom{max-width:var(--maxw);margin:34px auto 0;padding:18px 20px 28px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:#7e87a6}

  /* ---------- drawer ---------- */
  .drawer{position:fixed;inset:0;z-index:90;display:none}
  .drawer.open{display:block}
  .drawer-mask{position:absolute;inset:0;background:rgba(10,13,26,.62);backdrop-filter:blur(2px)}
  .drawer-panel{position:absolute;top:0;left:0;bottom:0;width:min(84vw,320px);background:#fff;padding:22px 18px;overflow:auto;box-shadow:var(--shadow-lg);animation:slideIn .22s ease}
  @keyframes slideIn{from{transform:translateX(-18px);opacity:.55}to{transform:none;opacity:1}}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .drawer-close{border:none;background:#eef1fb;color:var(--ink);width:32px;height:32px;border-radius:9px;font-size:16px;font-weight:700;cursor:pointer;transition:.2s}
  .drawer-close:hover{background:#e2e7f8}

  /* ---------- responsive ---------- */
  @media(min-width:560px){
    .grid-4{grid-template-columns:repeat(2,1fr)}
    .grid-3{grid-template-columns:repeat(2,1fr)}
    .reward-grid{grid-template-columns:repeat(2,1fr)}
    .trust-grid{grid-template-columns:repeat(2,1fr)}
  }
  @media(min-width:640px){
    .review-wall{columns:2}
  }
  @media(min-width:820px){
    .grid-4{grid-template-columns:repeat(4,1fr)}
    .grid-3{grid-template-columns:repeat(3,1fr)}
    .channel-grid{grid-template-columns:repeat(3,1fr)}
    .plan-grid{grid-template-columns:repeat(3,1fr)}
    .fan-grid{grid-template-columns:repeat(2,1fr)}
    .stat-grid{grid-template-columns:repeat(4,1fr)}
  }
  @media(min-width:900px){
    .hero-inner{grid-template-columns:1.12fr .88fr;align-items:center;padding:52px 44px}
    .scene-grid{grid-template-columns:1.02fr .98fr}
    .progress-grid{grid-template-columns:1.45fr .55fr;align-items:start}
    .news-grid{grid-template-columns:1.55fr .85fr;align-items:start}
    .lead-grid{grid-template-columns:1fr 1fr;align-items:center}
    .fan-grid{grid-template-columns:repeat(4,1fr)}
  }
  @media(min-width:1024px){
    .doc-sidebar{display:block;position:sticky;top:78px;max-height:calc(100vh - 98px);overflow:auto}
    .layout{grid-template-columns:250px minmax(0,1fr);gap:34px}
    .hero{margin-top:20px}
    .review-wall{columns:3}
    .reward-grid{grid-template-columns:repeat(4,1fr)}
    .trust-grid{grid-template-columns:repeat(4,1fr)}
    .poster-card:hover{transform:translateY(-6px)}
  }
  @media(min-width:1180px){
    .hero-inner{padding:58px 52px}
  }
  @media(max-width:1023px){
    .menu-btn{display:inline-flex;align-items:center}
    .ver-pill{display:none}
    .search-box{max-width:none}
  }
  @media(max-width:640px){
    .header-inner{gap:10px;padding:10px 14px}
    .brand-text{font-size:15.5px}
    .lang-btn{display:none}
    .search-box input{font-size:13px;padding:8px 12px 8px 34px}
    .layout{padding:0 14px}
    .hero-inner{padding:30px 18px}
    .section{padding:42px 0}
    .dark-panel,.lead-panel{padding:30px 18px}
    .news-item{flex-direction:column;gap:6px}
    .news-date{flex:none}
    .hero-stats{gap:18px}
    .footer-inner{padding:40px 16px 0}
  }
  @media(prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
  }

/* roulang page: article */
:root{
  --ink:#1a1f3d; --ink-2:#232a52; --ink-3:#111528;
  --gold:#ffb400; --gold-2:#ffd166; --gold-deep:#a4700a;
  --bg:#f5f6fb; --surface:#ffffff; --text:#1c2033; --muted:#5e6784; --line:#e3e7f2;
  --radius:14px; --radius-lg:22px;
  --shadow-xs:0 1px 3px rgba(26,31,61,.05);
  --shadow-sm:0 4px 14px rgba(26,31,61,.07);
  --shadow-md:0 14px 34px rgba(26,31,61,.11);
  --shadow-lg:0 28px 70px rgba(26,31,61,.2);
  --maxw:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:15px;line-height:1.75;color:var(--text);background:
  radial-gradient(1200px 500px at 85% -10%,rgba(255,180,0,.10),transparent 60%),
  radial-gradient(900px 420px at 5% 0%,rgba(26,31,61,.08),transparent 65%),
  var(--bg);
  -webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.2px}
p{margin:0}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(17,21,40,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#ffc233,#ff8a00);color:#231a00;font-weight:800;display:grid;place-items:center;font-size:18px;box-shadow:0 8px 18px rgba(255,154,0,.35)}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.6px}
.search-box{position:relative;flex:1 1 auto;max-width:420px;min-width:0;margin:0}
.search-box input{width:100%;padding:9px 14px 9px 38px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);color:#fff;font-size:14px;transition:.2s}
.search-box input::placeholder{color:rgba(255,255,255,.48)}
.search-box input:focus{outline:none;background:rgba(255,255,255,.15);border-color:rgba(255,180,0,.65);box-shadow:0 0 0 3px rgba(255,180,0,.18)}
.search-icon{position:absolute;left:14px;top:50%;width:15px;height:15px;transform:translateY(-50%);color:rgba(255,255,255,.55);pointer-events:none}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.ver-pill{font-size:12px;color:var(--gold-2);border:1px solid rgba(255,180,0,.38);background:rgba(255,180,0,.12);padding:4px 10px;border-radius:999px;white-space:nowrap}
.lang-btn{color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.16);background:transparent;padding:6px 12px;border-radius:999px;font-size:13px;transition:.2s;white-space:nowrap}
.lang-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.menu-btn{display:none;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00);border:none;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;transition:.2s;white-space:nowrap}
.menu-btn:hover{filter:brightness(1.05);transform:translateY(-1px)}

/* ---------- buttons / chips ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;border:none;transition:transform .18s,box-shadow .18s,background .18s,filter .18s;cursor:pointer}
.btn-gold{background:linear-gradient(135deg,#ffc233,#ff9a00);color:#231a00;box-shadow:0 12px 26px rgba(255,154,0,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,154,0,.42)}
.btn-gold:active{transform:translateY(0);filter:brightness(.96)}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:4px 11px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:rgba(255,255,255,.86)}
.chip-gold{background:rgba(255,180,0,.18);border-color:rgba(255,180,0,.45);color:var(--gold-2)}

/* ---------- layout ---------- */
.page-shell{display:grid;grid-template-columns:248px minmax(0,1fr);gap:34px;max-width:var(--maxw);margin:0 auto;padding:26px 20px 70px;align-items:start}
.doc-sidebar{position:sticky;top:78px;display:flex;flex-direction:column;gap:18px}
.side-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;box-shadow:var(--shadow-xs)}
.side-title{margin:0 0 10px;font-size:11.5px;letter-spacing:.14em;font-weight:700;color:var(--muted);text-transform:uppercase}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;font-size:14.5px;font-weight:600;color:#3b4266;transition:.18s}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:#c9cfe4;transition:.18s;flex:0 0 auto}
.side-nav a:hover{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.side-nav a:hover::before{background:var(--gold)}
.side-nav a.active{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
.side-nav a.active::before{background:var(--gold)}
.side-toc{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.side-toc a{display:block;font-size:13.5px;color:var(--muted);padding:6px 4px;border-left:2px solid transparent;transition:.18s}
.side-toc a:hover{color:var(--ink);border-left-color:var(--gold);padding-left:9px}
.doc-main{min-width:0}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:14px;flex-wrap:wrap}
.crumb a{color:var(--ink);font-weight:600}
.crumb a:hover{color:var(--gold-deep)}
.crumb span{color:#b9c0d6}

/* ---------- article hero ---------- */
.article-hero{position:relative;isolation:isolate;overflow:hidden;border-radius:var(--radius-lg);color:#fff;padding:36px 30px 32px;margin-bottom:24px;background:linear-gradient(120deg,#111528 0%,#1a1f3d 60%,#2a2050 100%);box-shadow:var(--shadow-md)}
.article-hero::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.32;z-index:-2}
.article-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(17,21,40,.42),rgba(17,21,40,.94));z-index:-1}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.article-title{font-size:clamp(24px,3.4vw,38px);font-weight:800;line-height:1.3;letter-spacing:-.6px;margin-bottom:14px}
.article-lead{font-size:14.8px;line-height:1.9;color:rgba(255,255,255,.82);max-width:760px}
.article-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.14);font-size:12.8px;color:rgba(255,255,255,.62)}
.dot{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,.4)}

/* ---------- stat strip ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:24px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow-xs);transition:transform .2s,box-shadow .2s}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.stat strong{display:block;font-size:22px;font-weight:800;color:var(--ink);line-height:1.3}
.stat span{display:block;font-size:12.5px;color:var(--muted);margin-top:3px}

/* ---------- article body ---------- */
.article-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 30px;box-shadow:var(--shadow-sm);margin-bottom:26px}
.rich-text{font-size:15.5px;line-height:1.95;color:#2b3050;overflow-wrap:break-word}
.rich-text>*:first-child{margin-top:0}
.rich-text p{margin:0 0 16px}
.rich-text h2{font-size:22px;font-weight:800;color:var(--ink);margin:34px 0 14px;padding-left:13px;border-left:4px solid var(--gold);line-height:1.4}
.rich-text h3{font-size:18px;font-weight:700;color:var(--ink);margin:26px 0 12px}
.rich-text h4{font-size:16px;font-weight:700;color:var(--ink-2);margin:22px 0 10px}
.rich-text ul,.rich-text ol{margin:0 0 18px;padding-left:22px}
.rich-text li{margin-bottom:8px}
.rich-text li::marker{color:var(--gold-deep)}
.rich-text img{border-radius:12px;margin:18px auto;box-shadow:var(--shadow-sm)}
.rich-text blockquote{margin:20px 0;padding:14px 18px;background:#fdf7e6;border-left:4px solid var(--gold);border-radius:0 12px 12px 0;color:#4a3a10;font-size:14.8px}
.rich-text blockquote p:last-child{margin-bottom:0}
.rich-text table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;border-radius:12px;overflow:hidden}
.rich-text th,.rich-text td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.rich-text th{background:#f2f4fb;color:var(--ink);font-weight:700}
.rich-text tr:nth-child(even) td{background:#fafbff}
.rich-text a{color:var(--gold-deep);font-weight:600;border-bottom:1px solid rgba(255,180,0,.55)}
.rich-text a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.rich-text code{background:#f2f4fb;border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:13.5px}
.empty-state{text-align:center;padding:46px 16px}
.empty-state p{font-size:17px;font-weight:700;color:var(--ink);margin-bottom:18px}

/* ---------- generic section ---------- */
.section{padding:34px 0 6px}
.section-tint{background:linear-gradient(180deg,rgba(255,180,0,.07),rgba(255,180,0,0));border-radius:var(--radius-lg);padding:30px 24px 24px;margin:26px 0 0;border:1px solid rgba(255,180,0,.16)}
.section-head{max-width:720px;margin-bottom:22px}
.section-head h2{font-size:clamp(20px,2.4vw,26px);font-weight:800;color:var(--ink);margin-bottom:8px}
.section-head p{font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- info cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.info-card{background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:var(--radius);padding:20px 18px;box-shadow:var(--shadow-xs);transition:transform .2s,box-shadow .2s}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.info-card .num{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:9px;background:rgba(26,31,61,.06);color:var(--ink);font-weight:800;font-size:13px;margin-bottom:12px}
.info-card h3{font-size:16.5px;font-weight:700;color:var(--ink);margin-bottom:8px}
.info-card p{font-size:14px;line-height:1.85;color:var(--muted)}

/* ---------- topic cards ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.topic-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-xs);transition:transform .22s,box-shadow .22s,border-color .22s}
.topic-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:rgba(255,180,0,.5)}
.topic-card img{width:100%;height:150px;object-fit:cover;transition:transform .4s}
.topic-card:hover img{transform:scale(1.04)}
.topic-body{padding:16px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.topic-body h3{font-size:16px;font-weight:700;color:var(--ink)}
.topic-body p{font-size:13.8px;line-height:1.8;color:var(--muted);flex:1}
.topic-link{font-size:13.5px;font-weight:700;color:var(--gold-deep);display:inline-flex;align-items:center;gap:6px}
.topic-link::after{content:"→";transition:transform .2s}
.topic-card:hover .topic-link::after{transform:translateX(4px)}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-xs);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:rgba(255,180,0,.55);box-shadow:var(--shadow-sm)}
.faq-item summary{list-style:none;cursor:pointer;padding:16px 46px 16px 18px;font-size:15.5px;font-weight:700;color:var(--ink);position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:19px;font-weight:700;color:var(--gold-deep);transition:transform .2s}
.faq-item[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg)}
.faq-item p{padding:0 18px 18px;font-size:14.5px;line-height:1.9;color:var(--muted)}

/* ---------- cta ---------- */
.cta-band{margin-top:34px;display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;background:linear-gradient(120deg,#111528,#1a1f3d 65%,#2a2050);border-radius:var(--radius-lg);padding:30px 30px;color:#fff;box-shadow:var(--shadow-md)}
.cta-band h2{font-size:clamp(19px,2.3vw,24px);font-weight:800;margin-bottom:8px}
.cta-band p{font-size:14.2px;line-height:1.85;color:rgba(255,255,255,.74);max-width:560px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-3);color:rgba(255,255,255,.78);margin-top:46px;border-top:3px solid var(--gold)}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:52px 20px 30px;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:12px}
.footer-desc{font-size:13.8px;line-height:1.9;color:rgba(255,255,255,.6);max-width:390px}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin:0 0 12px}
.footer-links{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:13.8px;color:rgba(255,255,255,.66);transition:color .18s,transform .18s;display:inline-block}
.footer-links a:hover{color:var(--gold-2);transform:translateX(3px)}
.footer-bottom{max-width:var(--maxw);margin:0 auto;padding:16px 20px 26px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .page-shell{grid-template-columns:1fr;gap:22px;padding-top:20px}
  .doc-sidebar{position:static;display:none}
  .doc-sidebar.open{display:flex}
  .menu-btn{display:inline-flex;align-items:center}
  .side-nav{flex-direction:row;flex-wrap:wrap;gap:8px}
  .side-nav a{padding:8px 12px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-xs)}
  .side-nav a::before{display:none}
  .side-toc{flex-direction:row;flex-wrap:wrap;gap:4px 14px}
  .side-toc a{border-left:none;padding:4px 0}
  .side-toc a:hover{padding-left:0}
  .card-grid,.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-inner{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .search-box{display:none}
  .ver-pill{display:none}
  .header-inner{gap:10px;padding:10px 16px}
  .article-hero{padding:28px 20px 26px}
  .article-panel{padding:22px 18px}
  .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .section-tint{padding:24px 16px 18px}
  .cta-band{padding:26px 20px}
  .footer-inner{grid-template-columns:1fr;gap:26px;padding:40px 20px 24px}
}
@media (max-width:520px){
  body{font-size:14.5px}
  .brand-text{font-size:15.5px}
  .lang-btn{display:none}
  .card-grid,.topic-grid{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr 1fr;gap:10px}
  .stat{padding:13px 14px}
  .stat strong{font-size:19px}
  .article-title{font-size:22px}
  .article-lead{font-size:14px}
  .rich-text{font-size:15px}
  .rich-text h2{font-size:19px}
  .footer-bottom{flex-direction:column;gap:6px}
}

/* roulang page: category1 */
:root{
  --ink:#1a1f3d;
  --ink-2:#232a52;
  --ink-3:#111528;
  --gold:#ffb400;
  --gold-2:#ffd166;
  --gold-deep:#a4700a;
  --bg:#f5f6fb;
  --surface:#ffffff;
  --text:#1c2033;
  --muted:#5e6784;
  --line:#e3e7f2;
  --radius:14px;
  --radius-lg:22px;
  --shadow-xs:0 1px 3px rgba(26,31,61,.05);
  --shadow-sm:0 4px 14px rgba(26,31,61,.07);
  --shadow-md:0 14px 34px rgba(26,31,61,.11);
  --shadow-lg:0 28px 70px rgba(26,31,61,.2);
  --maxw:1200px;
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
html body{
  margin:0;font-family:var(--font);color:var(--text);line-height:1.75;font-size:15px;
  background:
    radial-gradient(1200px 500px at 85% -10%,rgba(255,180,0,.10),transparent 60%),
    radial-gradient(900px 420px at 5% 0%,rgba(26,31,61,.08),transparent 65%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
h1,h2,h3,h4,p,figure,figcaption{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
:focus-visible{outline:3px solid rgba(255,180,0,.6);outline-offset:2px;border-radius:8px}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(17,21,40,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#ffc233,#ff8a00);color:#231a00;font-weight:800;display:grid;place-items:center;font-size:18px;box-shadow:0 8px 18px rgba(255,154,0,.35)}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.6px}
.search-box{position:relative;flex:1 1 auto;max-width:420px;min-width:0}
.search-box input{width:100%;padding:9px 14px 9px 38px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);color:#fff;font-size:14px;transition:.2s}
.search-box input::placeholder{color:rgba(255,255,255,.48)}
.search-box input:focus{outline:none;background:rgba(255,255,255,.15);border-color:rgba(255,180,0,.65);box-shadow:0 0 0 3px rgba(255,180,0,.18)}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;opacity:.6}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.ver-pill{font-size:12px;color:var(--gold-2);border:1px solid rgba(255,180,0,.38);background:rgba(255,180,0,.12);padding:4px 10px;border-radius:999px;white-space:nowrap}
.lang-btn{color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.16);background:transparent;padding:6px 12px;border-radius:999px;font-size:13px;transition:.2s;white-space:nowrap}
.lang-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.menu-btn{display:none;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00);border:none;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;transition:.2s;cursor:pointer}
.menu-btn:hover{filter:brightness(1.05)}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:34px;max-width:var(--maxw);margin:0 auto;padding:26px 20px 64px;align-items:start}
.side{position:sticky;top:76px;background:linear-gradient(180deg,#fff,#fbfbff);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-sm)}
.side-title{font-size:11.5px;letter-spacing:.14em;color:var(--muted);font-weight:700;margin:0 0 10px}
.side-title+.side-title{margin-top:22px}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:22px}
.side-nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;font-size:14.5px;font-weight:600;color:#3b4266;transition:.18s;white-space:nowrap}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:#c9cfe4;transition:.18s;flex:0 0 auto}
.side-nav a:hover{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.side-nav a:hover::before{background:var(--gold)}
.side-nav a.active{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
.side-nav a.active::before{background:var(--gold)}
.side-toc{display:flex;flex-direction:column;gap:2px}
.side-toc a{font-size:13.5px;color:var(--muted);padding:5px 0;transition:.18s;border-left:2px solid transparent;padding-left:10px}
.side-toc a:hover{color:var(--ink);border-left-color:var(--gold);transform:translateX(2px)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;border:none;transition:transform .18s,box-shadow .18s,background .18s,filter .18s;cursor:pointer}
.btn-gold{background:linear-gradient(135deg,#ffc233,#ff9a00);color:#231a00;box-shadow:0 12px 26px rgba(255,154,0,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,154,0,.42)}
.btn-gold:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.26)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-dark{background:var(--ink);color:#fff;box-shadow:0 10px 24px rgba(26,31,61,.26)}
.btn-dark:hover{background:var(--ink-2);transform:translateY(-2px)}

/* ---------- hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:40px 32px;color:#fff;background:linear-gradient(125deg,#141936 0%,#1a1f3d 48%,#2b2159 100%);box-shadow:var(--shadow-lg);isolation:isolate}
.cat-hero::before{content:"";position:absolute;top:-45%;right:-12%;width:560px;height:560px;border-radius:50%;background:radial-gradient(circle,rgba(255,180,0,.36),transparent 62%);filter:blur(10px);z-index:-1}
.cat-hero::after{content:"";position:absolute;bottom:-55%;left:-18%;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(120,140,255,.30),transparent 66%);filter:blur(14px);z-index:-1}
.cat-hero-grid{display:grid;grid-template-columns:1.25fr .85fr;gap:34px;align-items:center}
.eyebrow-gold{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--gold-2);background:rgba(255,180,0,.16);border:1px solid rgba(255,180,0,.34);padding:5px 13px;border-radius:999px;margin-bottom:16px}
.cat-hero h1{margin:0 0 14px;font-size:clamp(25px,3.6vw,40px);line-height:1.3;font-weight:800;letter-spacing:-.6px}
.hero-lead{margin:0;font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.86);max-width:560px}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0 0}
.chips li{font-size:12.5px;color:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);padding:5px 12px;border-radius:999px;transition:.2s}
.chips li:hover{border-color:rgba(255,180,0,.6);color:var(--gold-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-figure{position:relative;border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.18);box-shadow:0 24px 54px rgba(0,0,0,.38);background:rgba(255,255,255,.06);padding:10px}
.hero-figure img{width:100%;height:220px;object-fit:cover;border-radius:12px}
.hero-figure figcaption{padding:12px 6px 4px;font-size:12.5px;color:rgba(255,255,255,.66);line-height:1.7}

/* ---------- panels & sections ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px;box-shadow:var(--shadow-xs);margin-top:28px}
.panel--tint{background:linear-gradient(180deg,#ffffff,#f6f8ff)}
.section-head{max-width:720px;margin-bottom:24px}
.section-tag{display:inline-block;font-size:12px;font-weight:700;color:var(--gold-deep);background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.28);padding:3px 11px;border-radius:999px;margin-bottom:12px}
.section-title{font-size:clamp(21px,2.5vw,27px);font-weight:800;line-height:1.35;letter-spacing:-.3px;color:var(--ink)}
.section-desc{margin-top:10px;color:var(--muted);font-size:14.5px;line-height:1.85}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.split-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);border:1px solid var(--line)}
.split-media img{width:100%;height:280px;object-fit:cover}
.pain-list{display:grid;gap:14px;margin-top:20px}
.pain-list li{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:13px 16px;border-radius:12px;background:#fbfcff;border:1px solid var(--line);transition:.2s}
.pain-list li:hover{border-color:#ffd98a;background:#fffdf6;transform:translateX(3px)}
.pain-num{width:26px;height:26px;border-radius:9px;background:rgba(26,31,61,.08);color:var(--ink);font-weight:800;font-size:13px;display:grid;place-items:center}
.pain-list strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:2px}
.pain-list span{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- judge grid ---------- */
.judge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.judge-card{position:relative;padding:24px 22px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-xs);transition:transform .22s,box-shadow .22s,border-color .22s;overflow:hidden}
.judge-card::before{content:"";position:absolute;left:0;top:0;width:4px;height:100%;background:linear-gradient(180deg,var(--gold),#ff8a00);opacity:.85}
.judge-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#f0d9a8}
.judge-card h3{font-size:17px;color:var(--ink);margin-bottom:8px;font-weight:800}
.judge-card p{font-size:13.8px;color:var(--muted);line-height:1.85}
.judge-index{display:inline-block;font-size:12px;font-weight:800;color:var(--gold-deep);letter-spacing:.1em;margin-bottom:8px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:step}
.step{position:relative;padding:22px 18px 20px;border-radius:var(--radius);background:#fbfcff;border:1px solid var(--line);transition:.22s}
.step:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateY(-3px);border-color:#dfe4f5}
.step-num{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00);box-shadow:0 8px 18px rgba(255,154,0,.28);margin-bottom:12px}
.step h3{font-size:15.5px;color:var(--ink);margin-bottom:7px;font-weight:800}
.step p{font-size:13.4px;color:var(--muted);line-height:1.8}

/* ---------- cards ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-xs);transition:transform .22s,box-shadow .22s,border-color .22s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#d9dff2}
.card img{width:100%;height:150px;object-fit:cover}
.card-body{padding:17px 18px 20px}
.card h3{font-size:16.5px;color:var(--ink);font-weight:800;margin-bottom:8px}
.card p{font-size:13.7px;color:var(--muted);line-height:1.8}
.card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tag{font-size:11.5px;font-weight:700;color:var(--ink-2);background:#f0f3fc;border:1px solid #e0e5f6;padding:3px 9px;border-radius:999px}
.tag--gold{color:var(--gold-deep);background:rgba(255,180,0,.14);border-color:rgba(255,180,0,.3)}

/* ---------- metrics ---------- */
.metrics{position:relative;overflow:hidden;background:linear-gradient(120deg,#141936,#1e2450 58%,#2a2158);color:#fff;border-radius:var(--radius-lg);padding:34px 32px;margin-top:28px;box-shadow:var(--shadow-md)}
.metrics::after{content:"";position:absolute;top:-40%;right:-8%;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,180,0,.26),transparent 65%);filter:blur(8px)}
.metrics h2{position:relative;font-size:clamp(20px,2.4vw,26px);font-weight:800;letter-spacing:-.3px}
.metrics p.metrics-desc{position:relative;margin-top:10px;font-size:14px;color:rgba(255,255,255,.72);max-width:620px;line-height:1.85}
.metrics-grid{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin-top:24px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14)}
.metric strong{display:block;font-size:30px;font-weight:800;color:var(--gold-2);line-height:1.2}
.metric span{display:block;margin-top:4px;font-size:12.8px;color:rgba(255,255,255,.66)}

/* ---------- voices ---------- */
.voices{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
.quote{border-radius:var(--radius);border:1px solid var(--line);background:#fbfcff;padding:24px;transition:.22s}
.quote:hover{background:#fff;box-shadow:var(--shadow-sm)}
.quote-main{display:flex;flex-direction:column;justify-content:center;background:linear-gradient(140deg,#fff8e6,#fffdf7);border-color:#f3e0b4}
.quote p{font-size:15px;color:var(--ink-2);line-height:1.95}
.quote-main p{font-size:17.5px;font-weight:600;color:var(--ink)}
.quote footer{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:13px;color:var(--muted)}
.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:13px;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00)}
.quote-stack{display:grid;gap:18px}

/* ---------- audience ---------- */
.audience{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.aud{padding:22px 20px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;transition:.22s}
.aud:hover{border-color:#f0d9a8;box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.aud h3{font-size:16px;color:var(--ink);font-weight:800;margin-bottom:8px}
.aud p{font-size:13.6px;color:var(--muted);line-height:1.8}

/* ---------- faq ---------- */
.faq{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.faq details{border:1px solid var(--line);border-radius:12px;background:#fbfcff;padding:15px 18px;transition:.2s}
.faq details[open]{background:#fff;border-color:#f0d9a8;box-shadow:var(--shadow-sm)}
.faq details:hover{border-color:#dfe4f5}
.faq summary{cursor:pointer;font-size:14.8px;font-weight:700;color:var(--ink);list-style:none;display:flex;gap:10px;align-items:flex-start;line-height:1.65}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"＋";color:var(--gold-deep);font-weight:800;font-size:14px;line-height:1.5}
.faq details[open] summary::before{content:"－"}
.faq p{margin-top:10px;font-size:13.7px;color:var(--muted);line-height:1.85;padding-left:24px}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;margin-top:28px;border-radius:var(--radius-lg);padding:36px 34px;background:linear-gradient(120deg,#1a1f3d,#232a52 60%,#2b2159);color:#fff;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;box-shadow:var(--shadow-md)}
.cta-band::before{content:"";position:absolute;top:-60%;right:-6%;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,180,0,.30),transparent 62%);filter:blur(10px)}
.cta-band h2{position:relative;font-size:clamp(20px,2.4vw,26px);font-weight:800;letter-spacing:-.3px}
.cta-band p{position:relative;margin-top:8px;font-size:14px;color:rgba(255,255,255,.76);max-width:520px;line-height:1.85}
.cta-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-3);color:rgba(255,255,255,.72);margin-top:48px;padding:46px 0 0}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px 32px;display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;margin-bottom:12px}
.footer-brand .brand-mark{width:32px;height:32px;font-size:16px;border-radius:10px}
.footer-desc{font-size:13.5px;line-height:1.9;max-width:380px;margin:0;color:rgba(255,255,255,.62)}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin:0 0 12px}
.footer-links{display:grid;gap:8px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.68);transition:.2s}
.footer-links a:hover{color:var(--gold-2)}
.footer-bottom{max-width:var(--maxw);margin:0 auto;padding:16px 20px;border-top:1px solid rgba(255,255,255,.1);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .layout{grid-template-columns:1fr;gap:22px;padding-top:20px}
  .side{position:static;top:auto;padding:14px}
  .side-nav{flex-direction:row;overflow-x:auto;gap:8px;margin-bottom:0;padding-bottom:4px}
  .side-nav a{background:#f4f6fd;border:1px solid var(--line)}
  .side-nav a::before{display:none}
  .side-nav a.active{background:var(--ink);color:#fff}
  .side-toc{display:none}
  .side-title{margin-bottom:8px}
  .cat-hero-grid{grid-template-columns:1fr;gap:26px}
  .hero-figure img{height:200px}
  .split{grid-template-columns:1fr}
  .split-media img{height:240px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .voices{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .audience{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .header-inner{padding:10px 16px;gap:10px}
  .search-box{display:none}
  .ver-pill{display:none}
  .menu-btn{display:inline-block}
  .header-right{gap:8px}
  .container{padding:0 16px}
  .layout{padding:18px 16px 52px}
  .cat-hero{padding:30px 20px}
  .panel{padding:24px 20px}
  .judge-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .metrics{padding:28px 20px}
  .metrics-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .faq{grid-template-columns:1fr}
  .cta-band{padding:28px 20px}
  .footer-inner{grid-template-columns:1fr;gap:26px}
  .card img{height:170px}
}
@media (max-width:520px){
  .cat-hero{padding:26px 16px}
  .hero-actions .btn{width:100%}
  .panel{padding:20px 16px;border-radius:16px}
  .hero-figure img{height:170px}
  .metrics-grid{grid-template-columns:1fr;gap:14px}
  .metric strong{font-size:26px}
  .footer-bottom{flex-direction:column;gap:6px}
  .quote p{font-size:14.5px}
  .quote-main p{font-size:16px}
}

/* roulang page: category2 */
:root{
 --ink:#1a1f3d;
 --ink-2:#232a52;
 --ink-3:#111528;
 --gold:#ffb400;
 --gold-2:#ffd166;
 --gold-deep:#a4700a;
 --bg:#f5f6fb;
 --surface:#ffffff;
 --text:#1c2033;
 --muted:#5e6784;
 --line:#e3e7f2;
 --radius:14px;
 --radius-lg:22px;
 --shadow-xs:0 1px 3px rgba(26,31,61,.05);
 --shadow-sm:0 4px 14px rgba(26,31,61,.07);
 --shadow-md:0 14px 34px rgba(26,31,61,.11);
 --shadow-lg:0 28px 70px rgba(26,31,61,.2);
 --maxw:1200px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);line-height:1.75;background:
 radial-gradient(1200px 500px at 85% -10%,rgba(255,180,0,.10),transparent 60%),
 radial-gradient(900px 420px at 5% 0%,rgba(26,31,61,.08),transparent 65%),
 var(--bg);
 -webkit-font-smoothing:antialiased;font-size:15px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(17,21,40,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#ffc233,#ff8a00);color:#231a00;font-weight:800;display:grid;place-items:center;font-size:18px;box-shadow:0 8px 18px rgba(255,154,0,.35)}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.6px}
.search-box{position:relative;flex:1 1 auto;max-width:420px;min-width:0}
.search-box input{width:100%;padding:9px 14px 9px 38px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);color:#fff;font-size:14px;transition:.2s}
.search-box input::placeholder{color:rgba(255,255,255,.48)}
.search-box input:focus{outline:none;background:rgba(255,255,255,.15);border-color:rgba(255,180,0,.65);box-shadow:0 0 0 3px rgba(255,180,0,.18)}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:13px;opacity:.6}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.ver-pill{font-size:12px;color:var(--gold-2);border:1px solid rgba(255,180,0,.38);background:rgba(255,180,0,.12);padding:4px 10px;border-radius:999px;white-space:nowrap}
.lang-btn{color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.16);background:transparent;padding:6px 12px;border-radius:999px;font-size:13px;transition:.2s;white-space:nowrap}
.lang-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.menu-btn{display:none;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00);border:none;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;transition:.2s}
.menu-btn:hover{filter:brightness(1.05)}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:26px}
.side-nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;font-size:14.5px;font-weight:600;color:#3b4266;transition:.18s}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:#c9cfe4;transition:.18s;flex:0 0 auto}
.side-nav a:hover{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.side-nav a:hover::before{background:var(--gold)}
.side-nav a.active{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
.side-nav a.active::before{background:var(--gold)}
.side-toc a{font-size:13.5px;color:var(--muted);padding:5px 0;transition:.18s}
.side-toc a:hover{color:var(--ink);transform:translateX(3px)}
.side-toc a.active{color:var(--ink);font-weight:700}
/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;border:none;transition:transform .18s,box-shadow .18s,background .18s,filter .18s;cursor:pointer}
.btn-gold{background:linear-gradient(135deg,#ffc233,#ff9a00);color:#231a00;box-shadow:0 12px 26px rgba(255,154,0,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,154,0,.42)}
.btn-gold:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.26)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid rgba(255,180,0,.55);outline-offset:2px}
.btn-sm{padding:9px 18px;font-size:13.5px}
/* ---------- doc layout ---------- */
.doc-layout{max-width:var(--maxw);margin:26px auto 0;padding:0 20px;display:grid;grid-template-columns:238px minmax(0,1fr);gap:26px;align-items:start}
.doc-sidebar{position:sticky;top:76px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:18px 14px;box-shadow:var(--shadow-sm)}
.side-group-title{font-size:12px;font-weight:700;letter-spacing:.12em;color:#9aa2bd;margin:0 0 8px 12px;text-transform:uppercase}
.side-toc{display:flex;flex-direction:column;gap:2px;padding-left:12px;border-left:2px solid var(--line);margin-top:6px}
.doc-main{min-width:0}
/* ---------- panels / sections ---------- */
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 30px;box-shadow:var(--shadow-sm);margin-bottom:24px;scroll-margin-top:90px}
.panel--tint{background:linear-gradient(180deg,#ffffff 0%,#f7f8fd 100%)}
.panel--dark{background:linear-gradient(140deg,#131834 0%,#1a1f3d 62%,#241c46 100%);border-color:rgba(255,255,255,.1);color:#fff;box-shadow:var(--shadow-md)}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--gold-deep);background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.3);padding:4px 12px;border-radius:999px;margin-bottom:12px}
.panel--dark .eyebrow{color:var(--gold-2);background:rgba(255,180,0,.14);border-color:rgba(255,180,0,.34)}
.section-title{font-size:clamp(21px,2.6vw,27px);line-height:1.35;font-weight:800;letter-spacing:-.4px;color:var(--ink);margin-bottom:10px}
.panel--dark .section-title{color:#fff}
.section-desc{font-size:14.6px;color:var(--muted);line-height:1.9;max-width:760px}
.panel--dark .section-desc{color:rgba(255,255,255,.72)}
.section-head{margin-bottom:22px}
/* ---------- hero ---------- */
.hero-cat{position:relative;border-radius:var(--radius-lg);overflow:hidden;color:#fff;background:linear-gradient(125deg,#111528,#1a1f3d 52%,#2b2053);box-shadow:var(--shadow-lg);margin-bottom:24px}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.3}
.hero-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(70% 90% at 88% 4%,rgba(255,180,0,.24),transparent 62%),linear-gradient(180deg,rgba(17,21,40,.42),rgba(17,21,40,.95))}
.hero-cat-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.85fr);gap:32px;padding:40px 34px;align-items:center}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.05em;color:var(--gold-2);background:rgba(255,180,0,.16);border:1px solid rgba(255,180,0,.34);padding:5px 13px;border-radius:999px;margin-bottom:16px}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(255,180,0,.22)}
.hero-title{margin:0 0 14px;font-size:clamp(25px,3.6vw,38px);line-height:1.3;font-weight:800;letter-spacing:-.6px}
.hero-sub{margin:0 0 14px;font-size:15px;font-weight:600;color:var(--gold-2)}
.hero-text{margin:0;font-size:14.6px;line-height:1.95;color:rgba(255,255,255,.8);max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.score-panel{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:18px;backdrop-filter:blur(8px);box-shadow:0 22px 50px rgba(0,0,0,.35)}
.score-panel-head{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.badge-hot{background:linear-gradient(135deg,#ffc233,#ff8a00);color:#2b1d00;font-size:11.5px;font-weight:800;padding:3px 9px;border-radius:999px;letter-spacing:.04em}
.score-list{display:grid;gap:9px}
.score-list li{display:flex;justify-content:space-between;gap:12px;font-size:13.5px;color:rgba(255,255,255,.8);padding-bottom:9px;border-bottom:1px dashed rgba(255,255,255,.14)}
.score-list b{color:var(--gold-2);font-weight:700;white-space:nowrap}
.score-total{margin-top:14px;background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.34);border-radius:12px;padding:12px 14px;font-size:14.5px;font-weight:700;color:#fff}
.score-total span{color:var(--gold-2)}
.score-note{margin-top:10px;font-size:12.5px;line-height:1.75;color:rgba(255,255,255,.56)}
/* ---------- fact cards ---------- */
.fact-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.fact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 18px 16px;box-shadow:var(--shadow-xs);transition:transform .22s,box-shadow .22s,border-color .22s;display:flex;flex-direction:column}
.fact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,180,0,.55)}
.fact-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
.fact-card h3{font-size:16.5px;font-weight:800;color:var(--ink)}
.fan-tag{font-size:12px;font-weight:800;color:#6b4600;background:linear-gradient(135deg,#ffe1a0,#ffc233);border-radius:999px;padding:3px 10px;white-space:nowrap}
.fact-card p{font-size:13.8px;line-height:1.85;color:var(--muted);flex:1}
.fact-meta{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:12.5px;color:#8b94af;display:flex;justify-content:space-between;gap:10px}
.fact-meta b{color:var(--ink-2)}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.step{position:relative;padding:22px 18px 18px;border-radius:var(--radius);background:rgba(26,31,61,.045);border:1px solid var(--line);transition:.22s}
.step:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateY(-3px)}
.step-num{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--gold-2);font-weight:800;font-size:15px;margin-bottom:12px}
.step h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:8px}
.step p{font-size:13.8px;line-height:1.85;color:var(--muted)}
/* ---------- split figure ---------- */
.figure-split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:30px;align-items:center}
.figure-split img{border-radius:var(--radius-lg);box-shadow:var(--shadow-md);width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.check-list{display:grid;gap:12px;margin-top:18px}
.check-list li{position:relative;padding-left:30px;font-size:14.2px;line-height:1.85;color:var(--muted)}
.check-list li strong{color:var(--ink)}
.check-list li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;background:rgba(255,180,0,.22);border:1px solid rgba(255,180,0,.6)}
.check-list li::after{content:"";position:absolute;left:5px;top:12px;width:6px;height:6px;border-radius:50%;background:var(--gold-deep)}
/* ---------- combo (dark) ---------- */
.combo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:6px}
.combo{display:flex;gap:14px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.13);border-radius:var(--radius);padding:16px 18px;transition:.22s}
.combo:hover{background:rgba(255,255,255,.1);border-color:rgba(255,180,0,.45);transform:translateY(-3px)}
.combo-index{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#2b1d00;background:linear-gradient(135deg,#ffc233,#ff9a00)}
.combo h3{font-size:15.5px;font-weight:800;color:#fff;margin-bottom:6px}
.combo p{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.72)}
/* ---------- stats ---------- */
.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 14px;text-align:center;box-shadow:var(--shadow-xs);transition:.22s}
.stat:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:rgba(255,180,0,.5)}
.stat strong{display:block;font-size:24px;font-weight:800;color:var(--ink);line-height:1.2;letter-spacing:-.5px}
.stat span{display:block;margin-top:6px;font-size:12.8px;color:var(--muted);line-height:1.6}
/* ---------- topic grid ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.topic-card{display:block;padding:20px 18px;border-radius:var(--radius);border:1px solid var(--line);background:#fff;transition:.22s;box-shadow:var(--shadow-xs)}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(255,180,0,.6)}
.topic-card .topic-kicker{font-size:12px;font-weight:700;color:var(--gold-deep);letter-spacing:.06em}
.topic-card h3{font-size:16.5px;font-weight:800;color:var(--ink);margin:6px 0 8px}
.topic-card p{font-size:13.6px;line-height:1.85;color:var(--muted)}
.topic-card .topic-now{display:inline-block;margin-top:12px;font-size:12.5px;font-weight:700;color:var(--ink);background:rgba(255,180,0,.18);border:1px solid rgba(255,180,0,.45);padding:3px 10px;border-radius:999px}
/* ---------- faq ---------- */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 18px;margin-bottom:10px;transition:.2s}
.faq details:hover{border-color:rgba(255,180,0,.5);box-shadow:var(--shadow-xs)}
.faq details[open]{border-color:rgba(255,180,0,.65);box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;font-weight:700;font-size:15px;color:var(--ink);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--gold-deep);font-size:20px;font-weight:800;line-height:1;flex:0 0 auto}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:10px;font-size:14px;line-height:1.9;color:var(--muted)}
/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;background:linear-gradient(120deg,#1a1f3d 0%,#2b1f4d 100%);border-radius:var(--radius-lg);padding:32px 34px;display:flex;align-items:center;justify-content:space-between;gap:24px;color:#fff;box-shadow:var(--shadow-md);margin-bottom:24px}
.cta-band::after{content:"";position:absolute;right:-60px;top:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(255,180,0,.32),transparent 70%)}
.cta-band h2{font-size:clamp(20px,2.4vw,25px);font-weight:800;line-height:1.4;margin-bottom:8px;position:relative}
.cta-band p{font-size:14px;color:rgba(255,255,255,.74);line-height:1.85;max-width:620px;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;flex:0 0 auto}
/* ---------- footer ---------- */
.site-footer{background:linear-gradient(180deg,#12162e,#0d1124);color:rgba(255,255,255,.72);margin-top:46px;padding:44px 0 0}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px 34px;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;letter-spacing:.5px}
.footer-desc{font-size:13.5px;line-height:1.95;margin-top:12px;color:rgba(255,255,255,.6);max-width:380px}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:12px}
.footer-links{display:grid;gap:8px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.68);transition:.18s}
.footer-links a:hover{color:var(--gold-2);transform:translateX(2px);display:inline-block}
.footer-links a:focus-visible{outline:2px solid var(--gold-2);outline-offset:3px;border-radius:4px}
.footer-bottom{max-width:var(--maxw);margin:0 auto;padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12.5px;color:rgba(255,255,255,.5)}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .doc-layout{grid-template-columns:1fr;gap:16px}
 .doc-sidebar{position:static;padding:12px;border-radius:var(--radius)}
 .side-group-title{display:none}
 .side-toc{display:none}
 .side-nav{flex-direction:row;overflow-x:auto;margin:0;gap:8px;padding-bottom:2px;scrollbar-width:thin}
 .side-nav a{white-space:nowrap;padding:7px 14px;background:#f2f4fb;font-size:13.5px}
 .side-nav a::before{display:none}
 .side-nav.is-open{flex-direction:column;overflow:visible}
 .side-nav.is-open a{white-space:normal}
 .menu-btn{display:inline-flex}
 .hero-cat-inner{grid-template-columns:1fr;padding:32px 24px;gap:24px}
 .fact-grid,.steps,.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}
 .figure-split{grid-template-columns:1fr;gap:22px}
 .combo-grid{grid-template-columns:1fr}
 .footer-inner{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:768px){
 .search-box{display:none}
 .panel{padding:26px 20px}
 .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px}
 .fact-grid,.steps,.topic-grid{grid-template-columns:1fr}
 .hero-actions .btn{flex:1 1 auto}
 .footer-inner{grid-template-columns:1fr;gap:24px;padding-bottom:26px}
}
@media (max-width:520px){
 .header-inner{gap:10px;padding:10px 14px}
 .brand-text{font-size:15.5px}
 .ver-pill{display:none}
 .hero-cat-inner{padding:26px 18px}
 .hero-title{font-size:24px}
 .panel{padding:22px 16px;border-radius:16px}
 .stat-row{grid-template-columns:1fr 1fr}
 .footer-bottom{justify-content:flex-start}
}

/* roulang page: category3 */
:root{
 --ink:#1a1f3d;
 --ink-2:#232a52;
 --ink-3:#111528;
 --gold:#ffb400;
 --gold-2:#ffd166;
 --gold-deep:#a4700a;
 --bg:#f5f6fb;
 --surface:#ffffff;
 --text:#1c2033;
 --muted:#5e6784;
 --line:#e3e7f2;
 --radius:14px;
 --radius-lg:22px;
 --shadow-xs:0 1px 3px rgba(26,31,61,.05);
 --shadow-sm:0 4px 14px rgba(26,31,61,.07);
 --shadow-md:0 14px 34px rgba(26,31,61,.11);
 --shadow-lg:0 28px 70px rgba(26,31,61,.2);
 --maxw:1200px;
 --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--text);line-height:1.7;background:
 radial-gradient(1200px 500px at 85% -10%,rgba(255,180,0,.10),transparent 60%),
 radial-gradient(900px 420px at 5% 0%,rgba(26,31,61,.08),transparent 65%),
 var(--bg);
 -webkit-font-smoothing:antialiased;font-size:15px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(17,21,40,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:11px 20px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;flex:0 0 auto}
.brand-mark{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#ffc233,#ff8a00);color:#231a00;font-weight:800;display:grid;place-items:center;font-size:18px;box-shadow:0 8px 18px rgba(255,154,0,.35)}
.brand-text{font-weight:700;font-size:17px;letter-spacing:.6px}
.search-box{position:relative;flex:1 1 auto;max-width:420px;min-width:0}
.search-box input{width:100%;padding:9px 14px 9px 38px;border-radius:999px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.08);color:#fff;font-size:14px;transition:.2s}
.search-box input::placeholder{color:rgba(255,255,255,.48)}
.search-box input:focus{outline:none;background:rgba(255,255,255,.15);border-color:rgba(255,180,0,.65);box-shadow:0 0 0 3px rgba(255,180,0,.18)}
.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);display:flex;color:rgba(255,255,255,.6);pointer-events:none}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.ver-pill{font-size:12px;color:var(--gold-2);border:1px solid rgba(255,180,0,.38);background:rgba(255,180,0,.12);padding:4px 10px;border-radius:999px;white-space:nowrap}
.lang-btn{color:rgba(255,255,255,.86);border:1px solid rgba(255,255,255,.16);background:transparent;padding:6px 12px;border-radius:999px;font-size:13px;transition:.2s;white-space:nowrap;cursor:pointer}
.lang-btn:hover{background:rgba(255,255,255,.12);color:#fff}
.menu-btn{display:none;color:#231a00;background:linear-gradient(135deg,#ffc233,#ff9a00);border:none;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700;transition:.2s;cursor:pointer}
.menu-btn:hover{filter:brightness(1.05)}
.menu-btn:focus-visible,.lang-btn:focus-visible,.btn:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* ---------- layout ---------- */
.layout{max-width:var(--maxw);margin:0 auto;padding:0 20px;display:grid;grid-template-columns:236px minmax(0,1fr);gap:30px;align-items:start}
.sidebar{position:sticky;top:74px;align-self:start;padding:26px 0 10px}
.sidebar-title{font-size:12px;font-weight:700;letter-spacing:.10em;color:var(--muted);text-transform:uppercase;margin:22px 0 8px;padding-left:12px}
.side-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:6px}
.side-nav a{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;font-size:14.5px;font-weight:600;color:#3b4266;transition:.18s}
.side-nav a::before{content:"";width:6px;height:6px;border-radius:50%;background:#c9cfe4;transition:.18s;flex:0 0 auto}
.side-nav a:hover{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm)}
.side-nav a:hover::before{background:var(--gold)}
.side-nav a.active{background:var(--ink);color:#fff;box-shadow:var(--shadow-md)}
.side-nav a.active::before{background:var(--gold)}
.side-toc{display:flex;flex-direction:column;padding-left:12px;border-left:2px solid var(--line)}
.side-toc a{font-size:13.5px;color:var(--muted);padding:5px 0;transition:.18s}
.side-toc a:hover{color:var(--ink);transform:translateX(3px)}
.side-note{margin-top:22px;padding:16px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-xs)}
.side-note p{font-size:12.8px;color:var(--muted);line-height:1.8}
.side-note strong{display:block;font-size:13.5px;color:var(--ink);margin-bottom:4px}

main{min-width:0;padding-bottom:10px}

/* ---------- buttons / tags ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 26px;border-radius:999px;font-weight:700;font-size:15px;border:none;transition:transform .18s,box-shadow .18s,background .18s,filter .18s;cursor:pointer}
.btn-gold{background:linear-gradient(135deg,#ffc233,#ff9a00);color:#231a00;box-shadow:0 12px 26px rgba(255,154,0,.32)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(255,154,0,.42)}
.btn-gold:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.26)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-sm{padding:9px 20px;font-size:13.5px}
.tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.03em;color:var(--gold-deep);background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.32);padding:3px 11px;border-radius:999px}

/* ---------- hero ---------- */
.hero{position:relative;margin-top:26px;border-radius:var(--radius-lg);overflow:hidden;color:#fff;background:linear-gradient(120deg,#111528 0%,#1a1f3d 55%,#2a2050 100%);box-shadow:var(--shadow-lg)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.34}
.hero-bg::after{content:"";position:absolute;inset:0;background:radial-gradient(80% 90% at 18% 8%,rgba(255,180,0,.20),transparent 62%),linear-gradient(180deg,rgba(17,21,40,.32),rgba(17,21,40,.94))}
.hero-inner{position:relative;padding:40px 26px;display:grid;grid-template-columns:1.08fr .92fr;gap:32px;align-items:center}
.hero-eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--gold-2);background:rgba(255,180,0,.16);border:1px solid rgba(255,180,0,.32);padding:5px 13px;border-radius:999px;margin-bottom:16px}
.hero-title{margin:0 0 14px;font-size:clamp(25px,3.6vw,40px);line-height:1.28;font-weight:800;letter-spacing:-.6px}
.hero-sub{margin:0 0 14px;font-size:15px;color:var(--gold-2);font-weight:600}
.hero-text{margin:0;font-size:14.6px;line-height:1.9;color:rgba(255,255,255,.82);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 20px}
.hero-stats{display:flex;flex-wrap:wrap;gap:26px;padding:18px 0 0;border-top:1px solid rgba(255,255,255,.14)}
.hero-stats strong{display:block;font-size:19px;font-weight:800;color:#fff;line-height:1.3}
.hero-stats span{display:block;font-size:12.5px;color:rgba(255,255,255,.62);margin-top:2px}

.hero-panel{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:18px;backdrop-filter:blur(8px);box-shadow:0 22px 50px rgba(0,0,0,.35)}
.hero-panel h2{font-size:15px;font-weight:700;color:#fff;margin-bottom:4px}
.hero-panel .panel-sub{margin:0 0 14px;font-size:12.4px;color:rgba(255,255,255,.6);line-height:1.7}
.slot{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.05);margin-bottom:9px;cursor:pointer;transition:.2s;position:relative}
.slot:hover{background:rgba(255,255,255,.11)}
.slot input{position:absolute;opacity:0;pointer-events:none}
.slot-main strong{display:block;font-size:14px;color:#fff;line-height:1.4}
.slot-main em{font-style:normal;font-size:12px;color:rgba(255,255,255,.6)}
.slot-tag{margin-left:auto;font-size:11.5px;color:var(--gold-2);background:rgba(255,180,0,.14);border:1px solid rgba(255,180,0,.3);padding:2px 9px;border-radius:999px;white-space:nowrap}
.slot:has(input:checked){border-color:rgba(255,180,0,.7);background:rgba(255,180,0,.12);box-shadow:0 0 0 3px rgba(255,180,0,.14)}
.hero-panel .btn{width:100%;margin-top:8px}
.panel-foot{margin-top:10px;font-size:11.8px;color:rgba(255,255,255,.5);text-align:center}

/* ---------- sections ---------- */
.block{padding:52px 0 8px}
.block + .block{border-top:1px solid var(--line);margin-top:44px;padding-top:48px}
.section-head{max-width:740px;margin-bottom:26px}
.section-title{font-size:clamp(21px,2.5vw,28px);font-weight:800;letter-spacing:-.4px;color:var(--ink);margin:10px 0 10px;line-height:1.35}
.section-desc{color:var(--muted);font-size:14.6px;line-height:1.9}

/* pain */
.pain-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.pain{display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-xs);transition:transform .25s,box-shadow .25s,border-color .25s}
.pain:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(255,180,0,.55)}
.pain-num{font-size:20px;font-weight:800;line-height:1;color:var(--gold-deep);background:rgba(255,180,0,.12);border-radius:10px;padding:9px 11px;height:fit-content;flex:0 0 auto}
.pain h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:6px}
.pain p{font-size:13.8px;color:var(--muted);line-height:1.85}
.pain:last-child{grid-column:1 / -1}

/* solution */
.solution{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:30px;align-items:center}
.solution-media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}
.solution-media img{width:100%;height:100%;min-height:280px;object-fit:cover;transition:transform .6s}
.solution-media:hover img{transform:scale(1.04)}
.solution-media figcaption{position:absolute;left:14px;bottom:14px;font-size:12px;color:#fff;background:rgba(17,21,40,.72);border:1px solid rgba(255,255,255,.18);padding:5px 12px;border-radius:999px;backdrop-filter:blur(6px)}
.check-list{display:grid;gap:12px;margin:18px 0 22px}
.check-list li{display:flex;gap:11px;font-size:14.2px;color:#3b4266;line-height:1.8}
.check-list li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:4px;border-radius:50%;background:linear-gradient(140deg,#ffc233,#ff9a00);box-shadow:0 4px 10px rgba(255,154,0,.35)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-xs);transition:transform .25s,box-shadow .25s}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.step-idx{width:36px;height:36px;border-radius:11px;background:linear-gradient(140deg,#ffc233,#ff9a00);color:#231a00;font-weight:800;display:grid;place-items:center;margin-bottom:12px;box-shadow:0 8px 16px rgba(255,154,0,.28)}
.step h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:7px}
.step p{font-size:13.6px;color:var(--muted);line-height:1.85}

/* scenes */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.scene{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-xs);transition:transform .25s,box-shadow .25s}
.scene:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.scene-thumb{overflow:hidden;height:168px}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .55s}
.scene:hover .scene-thumb img{transform:scale(1.06)}
.scene-body{padding:18px 18px 20px}
.scene-body h3{font-size:15.2px;font-weight:700;color:var(--ink);margin:10px 0 7px;line-height:1.5}
.scene-body p{font-size:13.5px;color:var(--muted);line-height:1.85}

/* stats band */
.stats-band{background:linear-gradient(120deg,#111528,#232a52 70%,#2a2050);color:#fff;border-radius:var(--radius-lg);padding:38px 30px;box-shadow:var(--shadow-md);margin-top:52px}
.stats-band h2{font-size:clamp(19px,2.2vw,24px);font-weight:800;margin-bottom:6px;letter-spacing:-.3px}
.stats-band .band-sub{font-size:13.6px;color:rgba(255,255,255,.66);margin-bottom:26px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat strong{display:block;font-size:26px;font-weight:800;color:var(--gold-2);line-height:1.2;letter-spacing:-.5px}
.stat span{display:block;font-size:12.8px;color:rgba(255,255,255,.66);margin-top:6px;line-height:1.7}

/* quotes */
.quotes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.quote{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--gold);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s}
.quote:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.quote p{font-size:14.4px;color:#3b4266;line-height:1.9}
.quote footer{margin-top:14px;font-size:12.8px;color:var(--muted)}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.news-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-xs);transition:transform .22s,box-shadow .22s,border-color .22s}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(255,180,0,.6)}
.news-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.news-cat{font-size:11.5px;font-weight:700;color:var(--gold-deep);background:rgba(255,180,0,.14);border-radius:999px;padding:2px 9px}
.news-time{font-size:11.8px;color:#9aa2bd}
.news-title{font-size:15px;font-weight:700;color:var(--ink);line-height:1.55;margin-bottom:8px}
.news-desc{font-size:13.3px;color:var(--muted);line-height:1.8;margin-bottom:14px}
.news-more{margin-top:auto;font-size:13px;font-weight:700;color:var(--gold-deep)}
.news-card:hover .news-more{color:#7d5405}
.news-empty{background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius);padding:26px;text-align:center;color:var(--muted);font-size:14px}

/* faq */
.faq{display:grid;gap:12px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-xs);transition:border-color .2s,box-shadow .2s}
.faq details:hover{border-color:rgba(255,180,0,.5);box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;font-weight:700;font-size:14.8px;color:var(--ink);list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:18px;font-weight:700;color:var(--gold-deep);line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{margin-top:10px;font-size:13.8px;color:var(--muted);line-height:1.9}

/* cta */
.cta-band{background:linear-gradient(120deg,#1a1f3d,#2a2050);color:#fff;border-radius:var(--radius-lg);padding:40px 32px;display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:center;box-shadow:var(--shadow-lg);margin-top:52px}
.cta-band h2{font-size:clamp(20px,2.4vw,27px);font-weight:800;letter-spacing:-.4px;margin-bottom:10px}
.cta-band p{font-size:14.2px;color:rgba(255,255,255,.78);line-height:1.9;max-width:520px}
.lead-form{display:flex;gap:10px;flex-wrap:wrap}
.lead-form input{flex:1 1 200px;min-width:0;padding:12px 18px;border-radius:999px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.09);color:#fff;font-size:14px;transition:.2s}
.lead-form input::placeholder{color:rgba(255,255,255,.45)}
.lead-form input:focus{outline:none;border-color:rgba(255,180,0,.7);box-shadow:0 0 0 3px rgba(255,180,0,.18);background:rgba(255,255,255,.14)}
.lead-tip{margin-top:10px;font-size:12.4px;color:rgba(255,255,255,.55)}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-3);color:rgba(255,255,255,.72);margin-top:64px;padding:48px 0 0}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:16px;margin-bottom:12px}
.footer-desc{font-size:13.4px;line-height:1.9;color:rgba(255,255,255,.6);max-width:380px}
.footer-title{color:#fff;font-size:14px;font-weight:700;margin-bottom:12px}
.footer-links{display:flex;flex-direction:column;gap:9px;font-size:13.4px}
.footer-links a{color:rgba(255,255,255,.66);transition:color .18s,transform .18s;display:inline-block}
.footer-links a:hover{color:var(--gold-2);transform:translateX(3px)}
.footer-bottom{max-width:var(--maxw);margin:36px auto 0;padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.5)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .layout{grid-template-columns:200px minmax(0,1fr);gap:22px}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
 .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));row-gap:26px}
 .hero-inner{grid-template-columns:1fr;gap:26px}
 .search-box{max-width:280px}
}
@media (max-width:900px){
 .layout{grid-template-columns:minmax(0,1fr)}
 .sidebar{position:static;display:none;padding:16px 0 0}
 .sidebar.open{display:block}
 .menu-btn{display:inline-flex}
 .ver-pill{display:none}
 .header-inner{gap:10px}
}
@media (max-width:768px){
 .solution{grid-template-columns:1fr}
 .pain-list{grid-template-columns:1fr}
 .quotes{grid-template-columns:1fr}
 .cta-band{grid-template-columns:1fr;padding:32px 22px}
 .footer-inner{grid-template-columns:1fr;gap:26px}
 .hero-inner{padding:32px 20px}
 .block{padding:40px 0 6px}
 .block + .block{margin-top:34px;padding-top:36px}
}
@media (max-width:560px){
 .hero-stats{gap:18px}
 .hero-stats li{flex:1 1 40%}
 .steps{grid-template-columns:1fr}
 .scene-grid{grid-template-columns:1fr}
 .news-grid{grid-template-columns:1fr}
 .stats-band{padding:28px 20px}
 .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
 .hero-actions .btn{width:100%}
 .search-box{display:none}
 .header-inner{padding:10px 16px}
 .layout{padding:0 16px}
 .footer-bottom{font-size:12px}
}