/* roulang page: index */
:root{
      --bg:#0f1020;
      --bg-soft:#151733;
      --panel:#181b3a;
      --panel-2:#1e2346;
      --card:#20264f;
      --line:rgba(255,255,255,.12);
      --line-strong:rgba(255,255,255,.18);
      --text:#f4f7ff;
      --muted:#b7bfdc;
      --soft:#8f96b8;
      --brand:#ff4d8d;
      --brand-2:#ff8c5a;
      --brand-3:#7d72ff;
      --success:#42d392;
      --warning:#ffcd57;
      --shadow:0 18px 50px rgba(0,0,0,.28);
      --shadow-soft:0 10px 30px rgba(0,0,0,.18);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1180px;
      --gap:24px;
      --transition:.24s ease;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255,77,141,.18), transparent 28%),
        radial-gradient(circle at top right, rgba(125,114,255,.14), transparent 25%),
        linear-gradient(180deg,#0e1020 0%, #111430 50%, #0d1023 100%);
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(255,77,141,.32);color:#fff}
    :focus-visible{outline:3px solid rgba(255,140,90,.9);outline-offset:3px}
    .container{width:min(var(--container), calc(100% - 40px)); margin:0 auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(140%) blur(18px);
      background:linear-gradient(180deg, rgba(12,14,30,.88), rgba(12,14,30,.72));
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .header-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      min-height:78px;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
      font-weight:800;
      letter-spacing:.4px;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 12px 24px rgba(255,77,141,.28);
      flex:0 0 auto;
      position:relative;
      overflow:hidden;
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(120deg, transparent 0%, rgba(255,255,255,.35) 45%, transparent 70%);
      transform:translateX(-80%);
      animation:sheen 5.5s linear infinite;
    }
    @keyframes sheen{
      to{transform:translateX(180%)}
    }
    .brand-name{
      font-size:1.08rem;
      line-height:1.2;
      white-space:nowrap;
    }
    .brand-sub{
      display:block;
      font-size:.78rem;
      color:var(--muted);
      font-weight:500;
      margin-top:2px;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .site-nav a{
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      background:transparent;
      font-weight:600;
      font-size:.94rem;
    }
    .site-nav a:hover,
    .site-nav a:focus-visible{
      color:#fff;
      border-color:rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      transform:translateY(-1px);
    }
    .site-nav a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(255,77,141,.18), rgba(125,114,255,.16));
      border-color:rgba(255,255,255,.14);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.08);
    }
    .nav-toggle{
      display:none;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.05);
      color:#fff;
      width:46px;
      height:46px;
      border-radius:14px;
      align-items:center;
      justify-content:center;
      cursor:pointer;
      box-shadow:var(--shadow-soft);
    }
    .nav-toggle span{
      width:18px;
      height:2px;
      background:#fff;
      position:relative;
      display:block;
      border-radius:999px;
    }
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      position:absolute;
      left:0;
      width:18px;
      height:2px;
      background:#fff;
      border-radius:999px;
    }
    .nav-toggle span::before{top:-6px}
    .nav-toggle span::after{top:6px}

    .hero{
      position:relative;
      padding:42px 0 24px;
    }
    .hero-shell{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      border-radius:32px;
      background:
        linear-gradient(180deg, rgba(14,16,34,.25), rgba(14,16,34,.78)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      min-height:560px;
    }
    .hero-shell::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(135deg, rgba(15,16,32,.88) 0%, rgba(15,16,32,.42) 55%, rgba(15,16,32,.92) 100%);
    }
    .hero-shell::after{
      content:"";
      position:absolute;
      inset:auto -20% -10% auto;
      width:360px;
      height:360px;
      background:radial-gradient(circle, rgba(255,77,141,.24) 0%, rgba(255,77,141,0) 70%);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:28px;
      align-items:center;
      padding:52px;
      min-height:560px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      font-size:.92rem;
      letter-spacing:.2px;
      backdrop-filter:blur(10px);
    }
    .eyebrow .dot{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--success);
      box-shadow:0 0 0 6px rgba(66,211,146,.15);
    }
    .hero h1{
      margin:18px 0 14px;
      font-size:clamp(2.1rem, 4vw, 4.1rem);
      line-height:1.08;
      letter-spacing:-.02em;
    }
    .hero p{
      margin:0;
      max-width:640px;
      color:#d8ddf4;
      font-size:1.05rem;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:700;
      cursor:pointer;
      transition:transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
      user-select:none;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 14px 28px rgba(255,77,141,.28);
    }
    .btn-primary:hover{box-shadow:0 18px 32px rgba(255,77,141,.36)}
    .btn-ghost{
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.12);
      backdrop-filter:blur(10px);
    }
    .btn-ghost:hover{
      background:rgba(255,255,255,.1);
      border-color:rgba(255,255,255,.18);
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:26px;
    }
    .pill{
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.1);
      color:#edf0ff;
      font-size:.9rem;
    }
    .hero-panel{
      align-self:stretch;
      display:flex;
      flex-direction:column;
      gap:16px;
    }
    .spotlight{
      position:relative;
      overflow:hidden;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.1);
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
      box-shadow:var(--shadow-soft);
      min-height:260px;
    }
    .spotlight img{
      width:100%;
      height:100%;
      object-fit:cover;
      min-height:260px;
      filter:saturate(1.04) contrast(1.02);
    }
    .spotlight .shade{
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(11,12,26,.05), rgba(11,12,26,.72));
    }
    .spotlight .copy{
      position:absolute;
      left:18px;
      right:18px;
      bottom:18px;
      z-index:1;
      display:flex;
      flex-direction:column;
      gap:6px;
    }
    .spotlight .copy strong{
      font-size:1.06rem;
    }
    .spotlight .copy span{
      color:#e4e7f7;
      font-size:.95rem;
    }
    .mini-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:16px;
    }
    .mini-card{
      border-radius:22px;
      border:1px solid rgba(255,255,255,.1);
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
      padding:18px;
      box-shadow:var(--shadow-soft);
    }
    .mini-card .num{
      font-size:1.7rem;
      font-weight:800;
      line-height:1;
      margin-bottom:8px;
      background:linear-gradient(135deg, #fff, #d9ddff);
      -webkit-background-clip:text;
      color:transparent;
    }
    .mini-card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }

    main{padding:10px 0 42px}
    .section{
      padding:24px 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }
    .section-title{
      margin:0;
      font-size:1.7rem;
      line-height:1.2;
      letter-spacing:-.01em;
    }
    .section-desc{
      margin:0;
      color:var(--muted);
      max-width:680px;
      font-size:.98rem;
    }
    .top-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.1);
      color:#eef1ff;
      background:rgba(255,255,255,.05);
      font-size:.92rem;
      box-shadow:0 8px 20px rgba(0,0,0,.08);
    }
    .tag i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 0 6px rgba(255,77,141,.14);
      display:inline-block;
    }

    .feature-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:var(--gap);
    }
    .feature-card{
      grid-column:span 4;
      overflow:hidden;
      border-radius:26px;
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:var(--shadow-soft);
    }
    .feature-card figure{
      margin:0;
      position:relative;
      overflow:hidden;
      aspect-ratio:16/10;
    }
    .feature-card img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .45s ease, filter .45s ease;
      filter:saturate(1.04);
    }
    .feature-card:hover img{transform:scale(1.04)}
    .feature-card .content{
      padding:18px;
    }
    .feature-card h3{
      margin:0 0 8px;
      font-size:1.08rem;
    }
    .feature-card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .badge-row{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-top:14px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,77,141,.11);
      color:#ffd8e7;
      border:1px solid rgba(255,77,141,.18);
      font-size:.82rem;
      font-weight:600;
    }

    .split-banner{
      position:relative;
      overflow:hidden;
      border-radius:30px;
      background:
        linear-gradient(135deg, rgba(125,114,255,.15), rgba(255,77,141,.12)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .split-banner::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg, rgba(13,15,34,.86) 0%, rgba(13,15,34,.52) 48%, rgba(13,15,34,.86) 100%);
    }
    .split-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:24px;
      padding:34px;
      align-items:center;
    }
    .metric-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:14px;
    }
    .metric{
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.1);
      backdrop-filter:blur(10px);
    }
    .metric strong{
      display:block;
      font-size:1.4rem;
      margin-bottom:6px;
    }
    .metric span{
      color:#d5dbf7;
      font-size:.92rem;
    }

    .content-grid{
      display:grid;
      grid-template-columns:repeat(12,1fr);
      gap:var(--gap);
    }
    .content-list{
      grid-column:span 8;
      display:grid;
      gap:16px;
    }
    .content-aside{
      grid-column:span 4;
      display:grid;
      gap:16px;
    }
    .post-card{
      display:grid;
      grid-template-columns:180px 1fr;
      gap:18px;
      padding:16px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.1);
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.045));
      box-shadow:var(--shadow-soft);
      transition:transform var(--transition), border-color var(--transition), background var(--transition);
    }
    .post-card:hover{
      transform:translateY(-2px);
      border-color:rgba(255,255,255,.18);
      background:linear-gradient(180deg, rgba(255,255,255,.1), rgba(255,255,255,.055));
    }
    .post-thumb{
      overflow:hidden;
      border-radius:20px;
      aspect-ratio:4/3;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
    }
    .post-thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform .45s ease;
    }
    .post-card:hover .post-thumb img{transform:scale(1.05)}
    .post-body h3{
      margin:4px 0 10px;
      font-size:1.06rem;
      line-height:1.4;
    }
    .post-body p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .meta-line{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-bottom:10px;
      color:var(--soft);
      font-size:.86rem;
    }
    .meta-line span{
      display:inline-flex;
      align-items:center;
      gap:6px;
    }
    .meta-line .chip{
      padding:5px 9px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      color:#e7ebff;
    }

    .side-card{
      padding:22px;
      border-radius:26px;
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:var(--shadow-soft);
    }
    .side-card h3{
      margin:0 0 12px;
      font-size:1.08rem;
    }
    .side-card p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .list li{
      position:relative;
      padding-left:20px;
      color:#edf0ff;
      font-size:.95rem;
    }
    .list li::before{
      content:"";
      position:absolute;
      left:0;
      top:.7em;
      width:8px;
      height:8px;
      border-radius:50%;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 0 0 5px rgba(255,77,141,.12);
      transform:translateY(-50%);
    }

    .steps{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
    }
    .step{
      padding:20px;
      border-radius:24px;
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.045));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:var(--shadow-soft);
      min-height:180px;
    }
    .step .index{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:800;
      background:linear-gradient(135deg, var(--brand), var(--brand-2));
      box-shadow:0 10px 20px rgba(255,77,141,.22);
      margin-bottom:14px;
    }
    .step h3{
      margin:0 0 10px;
      font-size:1.02rem;
    }
    .step p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }

    .faq{
      display:grid;
      gap:14px;
    }
    details{
      border-radius:22px;
      background:linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.045));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      font-weight:700;
      position:relative;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"+";
      position:absolute;
      right:20px;
      top:50%;
      transform:translateY(-50%);
      width:34px;
      height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:rgba(255,255,255,.08);
      color:#fff;
      font-size:1rem;
      transition:transform var(--transition), background var(--transition);
    }
    details[open] summary::after{
      content:"–";
      background:rgba(255,77,141,.18);
    }
    details .answer{
      padding:0 20px 18px;
      color:var(--muted);
    }

    .cta{
      position:relative;
      overflow:hidden;
      border-radius:30px;
      background:
        linear-gradient(135deg, rgba(255,77,141,.24), rgba(125,114,255,.18)),
        url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow);
    }
    .cta::before{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(90deg, rgba(11,13,27,.88), rgba(11,13,27,.65));
    }
    .cta-inner{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1fr auto;
      gap:20px;
      align-items:center;
      padding:34px;
    }
    .cta h2{
      margin:0 0 10px;
      font-size:1.8rem;
      line-height:1.2;
    }
    .cta p{
      margin:0;
      max-width:700px;
      color:#e3e7fb;
    }
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }

    .site-footer{
      margin-top:10px;
      padding:26px 0 36px;
      border-top:1px solid rgba(255,255,255,.08);
      color:var(--muted);
    }
    .footer-grid{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
    }
    .footer-brand{
      max-width:420px;
    }
    .footer-brand strong{
      display:block;
      color:#fff;
      font-size:1.02rem;
      margin-bottom:8px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 14px;
    }
    .footer-links a{
      color:var(--muted);
      padding:6px 0;
    }
    .footer-links a:hover{color:#fff}
    .copyright{
      margin-top:16px;
      padding-top:16px;
      border-top:1px solid rgba(255,255,255,.08);
      font-size:.9rem;
      color:#9da4c8;
    }

    .empty-state{
      padding:20px;
      border-radius:20px;
      border:1px dashed rgba(255,255,255,.16);
      color:var(--muted);
      background:rgba(255,255,255,.04);
      box-shadow:var(--shadow-soft);
    }

    @media (max-width: 1080px){
      .hero-grid,
      .split-inner,
      .cta-inner{
        grid-template-columns:1fr;
      }
      .feature-card{grid-column:span 6}
      .content-list,.content-aside{grid-column:span 12}
      .steps{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width: 820px){
      .site-nav{
        position:absolute;
        top:78px;
        left:20px;
        right:20px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        gap:8px;
        padding:14px;
        border-radius:22px;
        background:rgba(12,14,30,.96);
        border:1px solid rgba(255,255,255,.1);
        box-shadow:var(--shadow);
      }
      .site-nav.is-open{display:flex}
      .site-nav a{width:100%; text-align:center}
      .nav-toggle{display:inline-flex}
      .header-inner{position:relative}
      .hero-shell{min-height:auto}
      .hero-grid{padding:26px}
      .feature-card{grid-column:span 12}
      .mini-grid{grid-template-columns:1fr}
      .post-card{grid-template-columns:1fr}
      .post-thumb{aspect-ratio:16/9}
      .steps{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width: 560px){
      .container{width:min(var(--container), calc(100% - 28px))}
      .header-inner{min-height:72px}
      .brand-name{font-size:1rem}
      .hero{padding-top:22px}
      .hero h1{font-size:clamp(1.9rem, 10vw, 3rem)}
      .hero p{font-size:.98rem}
      .hero-shell,.split-banner,.cta{border-radius:24px}
      .section-title{font-size:1.42rem}
      .cta-inner,.split-inner,.hero-grid{padding:22px}
      .post-card,.side-card,.step,.feature-card .content{border-radius:20px}
      .btn{width:100%}
      .hero-actions,.cta-actions{width:100%}
    }

/* roulang page: category2 */
:root{
      --bg:#08101d;
      --bg-2:#0c1629;
      --surface:rgba(15, 24, 44, .82);
      --surface-2:rgba(19, 31, 54, .92);
      --text:#eef3ff;
      --muted:#a7b2cb;
      --soft:#7f8ba8;
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.16);
      --primary:#ff4d86;
      --primary-2:#ff7aa7;
      --accent:#ffbf66;
      --ok:#67e8a2;
      --shadow:0 24px 60px rgba(0,0,0,.34);
      --shadow-soft:0 14px 30px rgba(0,0,0,.18);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1180px;
      --gap:24px;
      --gap-lg:34px;
      --transition:220ms ease;
    }
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      color:var(--text);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      line-height:1.7;
      background:
        radial-gradient(circle at top left, rgba(255,77,134,.20), transparent 28%),
        radial-gradient(circle at top right, rgba(255,191,102,.16), transparent 24%),
        linear-gradient(180deg, #07101d 0%, #08101d 42%, #090e18 100%);
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      background:
        linear-gradient(rgba(255,255,255,.02), rgba(255,255,255,.02)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180' viewBox='0 0 180 180'%3E%3Cg fill='%23ffffff' fill-opacity='.03'%3E%3Ccircle cx='12' cy='12' r='1.2'/%3E%3Ccircle cx='90' cy='32' r='1'/%3E%3Ccircle cx='140' cy='68' r='1.1'/%3E%3Ccircle cx='48' cy='128' r='1'/%3E%3Ccircle cx='156' cy='154' r='1.1'/%3E%3C/g%3E%3C/svg%3E");
      opacity:.55;
      mix-blend-mode:screen;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    button{border:0;background:none;color:inherit;cursor:pointer}
    :focus-visible{outline:3px solid rgba(255,77,134,.72);outline-offset:3px}
    .container{
      width:min(100% - 32px, var(--container));
      margin-inline:auto;
    }
    .site-header{
      position:fixed;
      top:0;
      left:0;
      right:0;
      z-index:50;
      backdrop-filter:blur(18px);
      background:rgba(6, 11, 20, .64);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      flex:0 0 auto;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:14px;
      display:grid;
      place-items:center;
      font-size:18px;
      font-weight:800;
      color:#fff;
      background:linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow:0 10px 24px rgba(255,77,134,.28);
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      font-size:18px;
      font-weight:800;
      letter-spacing:.2px;
      line-height:1.05;
    }
    .brand-sub{
      margin-top:5px;
      font-size:12px;
      font-weight:600;
      color:var(--muted);
      letter-spacing:.18em;
      text-transform:none;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
    }
    .site-nav a{
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      transition:transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
    }
    .site-nav a:hover{
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.10);
      transform:translateY(-1px);
    }
    .site-nav a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(255,77,134,.22), rgba(255,191,102,.16));
      border-color:rgba(255,255,255,.12);
      box-shadow:0 10px 24px rgba(0,0,0,.18);
    }
    .nav-toggle{
      display:none;
      width:46px;
      height:46px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.04);
      align-items:center;
      justify-content:center;
      transition:background var(--transition), transform var(--transition), border-color var(--transition);
    }
    .nav-toggle:hover{background:rgba(255,255,255,.08);transform:translateY(-1px)}
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      display:block;
      width:18px;
      height:2px;
      border-radius:999px;
      background:#fff;
      position:relative;
      transition:transform var(--transition), top var(--transition), opacity var(--transition);
    }
    .nav-toggle span::before{position:absolute;top:-6px;left:0}
    .nav-toggle span::after{position:absolute;top:6px;left:0}
    main{padding-top:96px}
    .hero{
      position:relative;
      overflow:hidden;
      padding:34px 0 18px;
    }
    .hero-shell{
      position:relative;
      border:1px solid rgba(255,255,255,.12);
      border-radius:28px;
      background:
        linear-gradient(180deg, rgba(8,16,29,.20), rgba(8,16,29,.88)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .hero-shell::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(115deg, rgba(8,16,29,.88) 18%, rgba(8,16,29,.42) 58%, rgba(8,16,29,.76) 100%);
    }
    .hero-content{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:32px;
      padding:40px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 14px;
      margin-bottom:16px;
      border-radius:999px;
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      font-size:13px;
      letter-spacing:.12em;
    }
    .eyebrow i{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--ok);
      box-shadow:0 0 0 6px rgba(103,232,162,.12);
      display:inline-block;
    }
    h1{
      margin:0;
      font-size:clamp(34px, 5vw, 58px);
      line-height:1.08;
      letter-spacing:-.03em;
    }
    .hero p{
      margin:18px 0 0;
      max-width:62ch;
      color:rgba(238,243,255,.86);
      font-size:17px;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      padding:13px 20px;
      border-radius:999px;
      font-weight:700;
      letter-spacing:.02em;
      transition:transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
      border:1px solid transparent;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--primary), #ff6a99 55%, #ff8a64);
      box-shadow:0 18px 32px rgba(255,77,134,.24);
    }
    .btn-primary:hover{box-shadow:0 22px 38px rgba(255,77,134,.32)}
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.12);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.10);
      border-color:rgba(255,255,255,.18);
    }
    .hero-badges{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
    }
    .badge{
      padding:8px 12px;
      border-radius:999px;
      color:rgba(255,255,255,.92);
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.10);
      font-size:13px;
      backdrop-filter:blur(10px);
    }
    .hero-panel{
      position:relative;
      z-index:1;
      display:grid;
      gap:14px;
    }
    .hero-card{
      border-radius:22px;
      padding:18px;
      background:rgba(11,17,31,.62);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(14px);
    }
    .hero-card-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:14px;
    }
    .mini-label{
      font-size:13px;
      color:var(--muted);
    }
    .mini-tag{
      font-size:12px;
      padding:6px 10px;
      border-radius:999px;
      color:#1a1220;
      background:linear-gradient(135deg, #ffd38a, #ff9fbb);
      font-weight:800;
    }
    .hero-mosaic{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:12px;
      align-items:stretch;
    }
    .mosaic-cover{
      position:relative;
      min-height:220px;
      border-radius:18px;
      overflow:hidden;
      background:#10192b;
      border:1px solid rgba(255,255,255,.08);
    }
    .mosaic-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      filter:saturate(1.05) contrast(1.02);
      transform:scale(1.01);
    }
    .mosaic-cover .shade{
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, rgba(4,8,16,.10), rgba(4,8,16,.78));
    }
    .mosaic-copy{
      position:absolute;
      inset:auto 0 0 0;
      padding:16px;
      z-index:1;
    }
    .mosaic-copy strong{
      display:block;
      font-size:18px;
      line-height:1.25;
      margin-bottom:8px;
    }
    .mosaic-copy span{
      display:block;
      color:rgba(255,255,255,.82);
      font-size:13px;
    }
    .mosaic-stack{
      display:grid;
      gap:12px;
    }
    .stack-item{
      min-height:104px;
      padding:16px;
      border-radius:18px;
      background:
        linear-gradient(135deg, rgba(255,77,134,.16), rgba(255,191,102,.12)),
        rgba(11,17,31,.55);
      border:1px solid rgba(255,255,255,.08);
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .stack-item b{
      font-size:18px;
    }
    .stack-item small{
      color:var(--muted);
      font-size:13px;
    }
    .section{
      padding:20px 0 8px;
    }
    .section-card{
      background:rgba(11,17,31,.55);
      border:1px solid rgba(255,255,255,.10);
      border-radius:28px;
      padding:28px;
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(14px);
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:20px;
      margin-bottom:20px;
    }
    .section-title{
      margin:0;
      font-size:clamp(24px, 3vw, 34px);
      line-height:1.15;
    }
    .section-desc{
      margin:0;
      max-width:58ch;
      color:var(--muted);
      font-size:15px;
    }
    .category-tabs{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-bottom:22px;
    }
    .category-tabs a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:11px 16px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.04);
      color:var(--muted);
      transition:transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
      white-space:nowrap;
    }
    .category-tabs a:hover{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.18);
      transform:translateY(-1px);
    }
    .category-tabs a.active{
      color:#fff;
      background:linear-gradient(135deg, rgba(255,77,134,.24), rgba(255,191,102,.16));
      border-color:rgba(255,255,255,.16);
      box-shadow:0 14px 28px rgba(0,0,0,.18);
    }
    .feature-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:18px;
    }
    .feature-card{
      padding:22px;
      border-radius:24px;
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.08);
      transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);
      min-height:100%;
    }
    .feature-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.16);
      box-shadow:0 18px 34px rgba(0,0,0,.18);
    }
    .feature-ico{
      width:48px;
      height:48px;
      border-radius:16px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      background:linear-gradient(135deg, rgba(255,77,134,.20), rgba(255,191,102,.14));
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:20px;
      font-weight:800;
    }
    .feature-card h3{
      margin:0 0 10px;
      font-size:18px;
    }
    .feature-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .content-split{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
      align-items:stretch;
    }
    .panel{
      border-radius:24px;
      padding:22px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
    }
    .panel h3{
      margin:0 0 14px;
      font-size:22px;
    }
    .panel p{margin:0;color:var(--muted)}
    .check-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:12px;
    }
    .check-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:rgba(238,243,255,.92);
    }
    .check{
      flex:0 0 auto;
      width:22px;
      height:22px;
      border-radius:50%;
      display:grid;
      place-items:center;
      margin-top:2px;
      background:rgba(103,232,162,.14);
      color:var(--ok);
      border:1px solid rgba(103,232,162,.26);
      font-size:13px;
      font-weight:800;
    }
    .gallery-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:18px;
    }
    .gallery-card{
      overflow:hidden;
      border-radius:24px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      transition:transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .gallery-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.16);
      box-shadow:0 18px 34px rgba(0,0,0,.22);
    }
    .gallery-media{
      aspect-ratio:4/3;
      overflow:hidden;
      position:relative;
    }
    .gallery-media img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition:transform 450ms ease;
    }
    .gallery-card:hover .gallery-media img{transform:scale(1.05)}
    .gallery-body{
      padding:18px;
    }
    .gallery-body .kicker{
      display:inline-flex;
      align-items:center;
      padding:5px 10px;
      border-radius:999px;
      font-size:12px;
      color:#ffd9e3;
      background:rgba(255,77,134,.12);
      border:1px solid rgba(255,77,134,.18);
      margin-bottom:12px;
    }
    .gallery-body h3{
      margin:0 0 8px;
      font-size:18px;
    }
    .gallery-body p{
      margin:0 0 14px;
      color:var(--muted);
      font-size:14px;
    }
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      font-weight:700;
    }
    .text-link span{
      transition:transform var(--transition);
    }
    .gallery-card:hover .text-link span{transform:translateX(4px)}
    .stats-strip{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:14px;
      margin-top:18px;
    }
    .stat{
      border-radius:20px;
      padding:18px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
    }
    .stat strong{
      display:block;
      font-size:24px;
      line-height:1;
      margin-bottom:10px;
    }
    .stat span{
      color:var(--muted);
      font-size:13px;
    }
    .steps{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:18px;
    }
    .step{
      padding:22px;
      border-radius:24px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      position:relative;
      overflow:hidden;
    }
    .step::after{
      content:"";
      position:absolute;
      inset:auto -20px -20px auto;
      width:130px;
      height:130px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,77,134,.16), transparent 70%);
      pointer-events:none;
    }
    .step-num{
      width:38px;
      height:38px;
      border-radius:13px;
      display:grid;
      place-items:center;
      margin-bottom:14px;
      background:linear-gradient(135deg, rgba(255,77,134,.22), rgba(255,191,102,.18));
      border:1px solid rgba(255,255,255,.12);
      font-weight:800;
    }
    .step h3{margin:0 0 10px;font-size:18px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .faq{
      display:grid;
      gap:14px;
    }
    details{
      border-radius:20px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      overflow:hidden;
    }
    summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      font-weight:700;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:rgba(255,255,255,.06);
      color:#fff;
      border:1px solid rgba(255,255,255,.10);
      transition:transform var(--transition), background var(--transition);
    }
    details[open] summary::after{
      content:"–";
      background:rgba(255,77,134,.18);
    }
    details p{
      margin:0;
      padding:0 20px 18px;
      color:var(--muted);
      font-size:14px;
    }
    .cta{
      margin:20px 0 42px;
    }
    .cta-box{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:18px;
      align-items:center;
      padding:28px;
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(255,77,134,.18), rgba(255,191,102,.12)),
        rgba(11,17,31,.68);
      border:1px solid rgba(255,255,255,.12);
      box-shadow:var(--shadow-soft);
    }
    .cta-box h2{
      margin:0 0 12px;
      font-size:clamp(24px, 3vw, 32px);
      line-height:1.15;
    }
    .cta-box p{
      margin:0;
      color:rgba(238,243,255,.84);
      max-width:60ch;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      justify-content:flex-end;
    }
    .site-footer{
      margin-top:28px;
      padding:32px 0 30px;
      border-top:1px solid rgba(255,255,255,.08);
      background:rgba(6,11,20,.55);
    }
    .footer-grid{
      display:flex;
      justify-content:space-between;
      gap:24px;
      align-items:flex-start;
    }
    .footer-brand strong{
      display:block;
      font-size:18px;
      margin-bottom:10px;
    }
    .footer-brand div{
      max-width:42ch;
      color:var(--muted);
      font-size:14px;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 14px;
      justify-content:flex-end;
    }
    .footer-links a{
      color:var(--muted);
      transition:color var(--transition), transform var(--transition);
    }
    .footer-links a:hover{
      color:#fff;
      transform:translateY(-1px);
    }
    .copyright{
      margin-top:20px;
      color:#8d98b6;
      font-size:13px;
    }
    @media (max-width: 1080px){
      .hero-content,
      .content-split,
      .cta-box{
        grid-template-columns:1fr;
      }
      .gallery-grid,
      .feature-grid,
      .steps,
      .stats-strip{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width: 768px){
      main{padding-top:84px}
      .header-inner{min-height:68px}
      .nav-toggle{display:inline-flex}
      .site-nav{
        position:absolute;
        top:100%;
        left:16px;
        right:16px;
        margin-top:12px;
        padding:12px;
        border-radius:22px;
        background:rgba(9,14,24,.96);
        border:1px solid rgba(255,255,255,.10);
        box-shadow:var(--shadow);
        display:none;
        flex-direction:column;
        align-items:stretch;
      }
      .site-nav.open{display:flex}
      .site-nav a{width:100%;text-align:center}
      .hero-content,
      .section-card,
      .cta-box{padding:22px}
      .hero p{font-size:16px}
      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }
      .gallery-grid,
      .feature-grid,
      .steps,
      .stats-strip{
        grid-template-columns:1fr;
      }
      .hero-mosaic{
        grid-template-columns:1fr;
      }
      .mosaic-cover{min-height:200px}
    }
    @media (max-width: 520px){
      .container{width:min(100% - 22px, var(--container))}
      .brand-name{font-size:16px}
      .brand-sub{letter-spacing:.1em}
      .hero{padding-top:22px}
      .hero-shell{border-radius:24px}
      .hero-content{padding:18px}
      .section-card,
      .panel,
      .feature-card,
      .gallery-body,
      .step,
      .hero-card{
        border-radius:20px;
      }
      .btn{
        width:100%;
      }
      .hero-actions,
      .cta-actions{
        width:100%;
      }
      .category-tabs{
        overflow-x:auto;
        padding-bottom:4px;
        flex-wrap:nowrap;
      }
      .category-tabs a{
        flex:0 0 auto;
      }
      .footer-grid{
        flex-direction:column;
      }
      .footer-links{
        justify-content:flex-start;
      }
      summary{
        padding:16px;
      }
      details p{
        padding:0 16px 16px;
      }
    }

/* roulang page: category1 */
:root{
      --bg:#0b1020;
      --bg-soft:#11162a;
      --panel:#141a33;
      --panel-2:#182041;
      --card:#18213d;
      --card-2:#1d284a;
      --line:rgba(255,255,255,.09);
      --line-strong:rgba(255,255,255,.16);
      --text:#eef1ff;
      --muted:#a7b0d4;
      --muted-2:#7f89b4;
      --primary:#ff4e8d;
      --primary-2:#ff7b6b;
      --secondary:#7c5cff;
      --accent:#25d6a2;
      --warning:#ffcf5a;
      --shadow:0 24px 60px rgba(0,0,0,.34);
      --shadow-soft:0 12px 30px rgba(0,0,0,.22);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --space-1:6px;
      --space-2:10px;
      --space-3:14px;
      --space-4:18px;
      --space-5:24px;
      --space-6:32px;
      --space-7:42px;
      --space-8:56px;
      --container:1200px;
      --header-h:80px;
      --ease:cubic-bezier(.2,.8,.2,1);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(124,92,255,.22), transparent 34%),
        radial-gradient(circle at top right, rgba(255,78,141,.20), transparent 28%),
        linear-gradient(180deg, #090d1a 0%, #0b1020 100%);
      min-height:100vh;
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      background-image:linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
      background-size:120px 120px;
      mask-image:linear-gradient(180deg, rgba(0,0,0,.42), transparent 72%);
      pointer-events:none;
      z-index:0;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none;transition:transform .25s var(--ease), color .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease), opacity .25s var(--ease)}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(255,78,141,.3);color:#fff}
    :focus-visible{outline:3px solid rgba(37,214,162,.7);outline-offset:3px}
    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
      position:relative;
      z-index:1;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:blur(16px);
      background:rgba(8,11,22,.72);
      border-bottom:1px solid rgba(255,255,255,.08);
    }
    .header-inner{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:14px;
      min-width:0;
      flex-shrink:0;
    }
    .brand-mark{
      width:44px;
      height:44px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:
        linear-gradient(135deg, rgba(255,78,141,.95), rgba(124,92,255,.95));
      box-shadow:0 12px 24px rgba(255,78,141,.26);
      font-weight:800;
      letter-spacing:.08em;
      color:#fff;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      gap:2px;
      font-size:1.1rem;
      font-weight:800;
      line-height:1.1;
      white-space:nowrap;
    }
    .brand-sub{
      font-size:.74rem;
      font-weight:600;
      color:var(--muted);
      letter-spacing:.03em;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:center;
      margin-left:auto;
    }
    .site-nav a{
      position:relative;
      padding:10px 14px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid transparent;
      background:transparent;
      font-weight:700;
      letter-spacing:.01em;
    }
    .site-nav a:hover{
      color:#fff;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.06);
      transform:translateY(-1px);
    }
    .site-nav a.active,
    .site-nav a[aria-current="page"]{
      color:#fff;
      background:linear-gradient(135deg, rgba(255,78,141,.18), rgba(124,92,255,.18));
      border-color:rgba(255,255,255,.14);
      box-shadow:0 10px 22px rgba(0,0,0,.18);
    }
    .nav-toggle{
      width:44px;
      height:44px;
      border:1px solid rgba(255,255,255,.10);
      border-radius:14px;
      background:rgba(255,255,255,.03);
      display:none;
      align-items:center;
      justify-content:center;
      cursor:pointer;
      color:#fff;
      box-shadow:var(--shadow-soft);
      transition:transform .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease);
    }
    .nav-toggle:hover{
      transform:translateY(-1px);
      background:rgba(255,255,255,.06);
      border-color:rgba(255,255,255,.18);
    }
    .nav-toggle span{
      position:relative;
      width:18px;
      height:2px;
      border-radius:999px;
      background:currentColor;
      display:block;
    }
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      position:absolute;
      left:0;
      width:18px;
      height:2px;
      border-radius:999px;
      background:currentColor;
      transition:transform .25s var(--ease), top .25s var(--ease), bottom .25s var(--ease), opacity .25s var(--ease);
    }
    .nav-toggle span::before{top:-6px}
    .nav-toggle span::after{bottom:-6px}
    .page-main{
      padding:28px 0 24px;
    }
    .hero{
      position:relative;
      border-radius:calc(var(--radius) + 8px);
      overflow:hidden;
      background:
        linear-gradient(120deg, rgba(9,13,26,.94), rgba(16,20,40,.72)),
        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      border:1px solid rgba(255,255,255,.08);
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 15% 20%, rgba(255,255,255,.12), transparent 24%),
        linear-gradient(135deg, rgba(255,78,141,.18), transparent 35%, rgba(124,92,255,.18) 100%);
      pointer-events:none;
    }
    .hero-inner{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);
      gap:32px;
      padding:46px;
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
      color:#fff;
      font-size:.88rem;
      font-weight:700;
      letter-spacing:.03em;
      backdrop-filter:blur(10px);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 0 6px rgba(37,214,162,.14);
    }
    .hero h1{
      margin:18px 0 14px;
      font-size:clamp(2rem, 4.8vw, 4.2rem);
      line-height:1.05;
      letter-spacing:-.03em;
    }
    .hero p{
      margin:0;
      max-width:62ch;
      color:rgba(238,241,255,.84);
      font-size:1.02rem;
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin:24px 0 0;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.11);
      color:#fff;
      font-size:.88rem;
      font-weight:700;
    }
    .badge.soft{
      color:var(--muted);
      background:rgba(255,255,255,.04);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:30px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 20px;
      border-radius:14px;
      border:1px solid transparent;
      font-weight:800;
      letter-spacing:.01em;
      cursor:pointer;
      white-space:nowrap;
      transition:transform .25s var(--ease), box-shadow .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
    }
    .btn:hover{transform:translateY(-1px)}
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow:0 16px 30px rgba(255,78,141,.28);
    }
    .btn-primary:hover{box-shadow:0 20px 34px rgba(255,78,141,.34)}
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.07);
      border-color:rgba(255,255,255,.12);
    }
    .btn-secondary:hover{
      background:rgba(255,255,255,.10);
      border-color:rgba(255,255,255,.18);
    }
    .btn-ghost{
      color:var(--text);
      background:transparent;
      border-color:rgba(255,255,255,.12);
    }
    .btn-ghost:hover{
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.18);
    }
    .hero-panel{
      position:relative;
      display:grid;
      gap:16px;
      align-content:start;
    }
    .hero-card{
      border-radius:24px;
      overflow:hidden;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(12px);
    }
    .hero-card img{
      width:100%;
      aspect-ratio: 1.06 / 1;
      object-fit:cover;
    }
    .hero-card-body{
      padding:18px;
      display:grid;
      gap:12px;
    }
    .hero-card-title{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      font-weight:800;
      font-size:1.02rem;
    }
    .mini-list{
      display:grid;
      gap:10px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .mini-list li{
      display:flex;
      align-items:flex-start;
      gap:10px;
      color:var(--muted);
      font-size:.95rem;
    }
    .mini-list li::before{
      content:"";
      width:9px;
      height:9px;
      border-radius:50%;
      margin-top:.5em;
      flex:0 0 auto;
      background:linear-gradient(135deg, var(--accent), var(--secondary));
      box-shadow:0 0 0 6px rgba(37,214,162,.10);
    }
    .search-strip{
      margin-top:18px;
      padding:16px;
      border-radius:20px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.10);
      display:flex;
      gap:12px;
      align-items:center;
      flex-wrap:wrap;
      box-shadow:var(--shadow-soft);
    }
    .search-strip strong{
      font-size:.95rem;
      color:#fff;
      flex:0 0 auto;
    }
    .search-form{
      display:flex;
      flex:1 1 320px;
      gap:10px;
      align-items:center;
      min-width:0;
    }
    .search-form input{
      flex:1 1 auto;
      min-width:0;
      height:48px;
      padding:0 16px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(8,11,22,.64);
      color:var(--text);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
    }
    .search-form input::placeholder{color:#8e98c2}
    .search-form input:focus{
      outline:none;
      border-color:rgba(37,214,162,.56);
      box-shadow:0 0 0 4px rgba(37,214,162,.12);
    }
    .search-form button{
      flex:0 0 auto;
      min-width:110px;
    }

    .section{
      padding:22px 0 0;
    }
    .section-head{
      display:flex;
      justify-content:space-between;
      align-items:flex-end;
      gap:16px;
      margin:0 0 18px;
    }
    .section-title{
      margin:0;
      font-size:clamp(1.4rem, 2vw, 2rem);
      line-height:1.2;
      letter-spacing:-.02em;
    }
    .section-desc{
      margin:0;
      color:var(--muted);
      max-width:60ch;
      font-size:.98rem;
    }
    .section-card{
      border-radius:24px;
      background:linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .category-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
    }
    .category-card{
      position:relative;
      overflow:hidden;
      display:flex;
      flex-direction:column;
      min-height:100%;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.09);
      border-radius:22px;
      box-shadow:var(--shadow-soft);
      transition:transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
    }
    .category-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.18);
      box-shadow:0 18px 34px rgba(0,0,0,.24);
    }
    .category-card.is-active{
      background:
        linear-gradient(180deg, rgba(255,78,141,.14), rgba(255,255,255,.03));
      border-color:rgba(255,78,141,.34);
    }
    .category-cover{
      position:relative;
      overflow:hidden;
      aspect-ratio: 1.18 / .82;
      background:var(--panel-2);
    }
    .category-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
      transform:scale(1.02);
      transition:transform .35s var(--ease);
    }
    .category-card:hover .category-cover img{
      transform:scale(1.08);
    }
    .category-cover::after{
      content:"";
      position:absolute;
      inset:0;
      background:linear-gradient(180deg, transparent 0%, rgba(8,11,22,.72) 100%);
    }
    .category-cover .badge{
      position:absolute;
      left:14px;
      top:14px;
      z-index:2;
      background:rgba(10,13,26,.62);
      backdrop-filter:blur(10px);
    }
    .category-body{
      padding:18px;
      display:grid;
      gap:12px;
      flex:1 1 auto;
    }
    .category-body h3{
      margin:0;
      font-size:1.08rem;
      line-height:1.25;
    }
    .category-body p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .category-footer{
      padding:0 18px 18px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-top:auto;
    }
    .text-link{
      color:#fff;
      font-weight:800;
      display:inline-flex;
      align-items:center;
      gap:8px;
    }
    .text-link::after{
      content:"→";
      transition:transform .25s var(--ease);
    }
    .text-link:hover::after{
      transform:translateX(3px);
    }
    .flag{
      font-size:.8rem;
      font-weight:800;
      color:var(--accent);
    }

    .feature-grid{
      display:grid;
      grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);
      gap:18px;
      align-items:stretch;
    }
    .feature-visual{
      position:relative;
      overflow:hidden;
      min-height:100%;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.08);
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
      box-shadow:var(--shadow-soft);
    }
    .feature-visual img{
      width:100%;
      height:100%;
      min-height:340px;
      object-fit:cover;
    }
    .feature-visual .overlay{
      position:absolute;
      inset:auto 18px 18px 18px;
      padding:16px;
      border-radius:20px;
      background:linear-gradient(180deg, rgba(7,10,20,.08), rgba(7,10,20,.78));
      border:1px solid rgba(255,255,255,.10);
      backdrop-filter:blur(10px);
    }
    .feature-visual .overlay strong{
      display:block;
      margin-bottom:6px;
      font-size:1.05rem;
    }
    .feature-visual .overlay span{
      color:rgba(238,241,255,.78);
      font-size:.93rem;
    }
    .feature-panel{
      display:grid;
      gap:16px;
    }
    .info-card{
      padding:22px;
      border-radius:24px;
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      display:grid;
      gap:14px;
    }
    .info-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--warning);
      font-size:.88rem;
      font-weight:800;
    }
    .info-kicker::before{
      content:"";
      width:10px;
      height:10px;
      border-radius:50%;
      background:var(--warning);
      box-shadow:0 0 0 6px rgba(255,207,90,.12);
    }
    .info-card h3{
      margin:0;
      font-size:1.18rem;
    }
    .info-card p{
      margin:0;
      color:var(--muted);
    }
    .check-list{
      list-style:none;
      padding:0;
      margin:0;
      display:grid;
      gap:12px;
    }
    .check-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      color:var(--text);
    }
    .check-list li::before{
      content:"";
      width:20px;
      height:20px;
      margin-top:.18em;
      flex:0 0 auto;
      border-radius:50%;
      background:linear-gradient(135deg, var(--accent), var(--secondary));
      box-shadow:0 8px 18px rgba(37,214,162,.16);
      position:relative;
    }
    .check-list li::after{
      content:"";
    }
    .check-list li span{
      color:var(--muted);
    }

    .feature-cards{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:16px;
    }
    .feature-tile{
      border-radius:22px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      box-shadow:var(--shadow-soft);
      transition:transform .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
    }
    .feature-tile:hover{
      transform:translateY(-4px);
      border-color:rgba(255,255,255,.16);
      box-shadow:0 18px 34px rgba(0,0,0,.24);
    }
    .feature-tile img{
      width:100%;
      aspect-ratio: 1.28 / .78;
      object-fit:cover;
    }
    .feature-tile .tile-body{
      padding:18px;
      display:grid;
      gap:10px;
    }
    .feature-tile h3{
      margin:0;
      font-size:1.03rem;
    }
    .feature-tile p{
      margin:0;
      color:var(--muted);
      font-size:.94rem;
    }

    .steps-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:16px;
    }
    .step{
      padding:22px;
      border-radius:22px;
      background:linear-gradient(180deg, rgba(255,255,255,.05), rgba(255,255,255,.03));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      position:relative;
      overflow:hidden;
    }
    .step::before{
      content:"";
      position:absolute;
      inset:auto -30px -40px auto;
      width:120px;
      height:120px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(255,78,141,.16) 0%, transparent 72%);
    }
    .step-num{
      width:44px;
      height:44px;
      border-radius:16px;
      display:grid;
      place-items:center;
      background:linear-gradient(135deg, rgba(255,78,141,.18), rgba(124,92,255,.18));
      border:1px solid rgba(255,255,255,.10);
      font-weight:900;
      margin-bottom:16px;
    }
    .step h3{
      margin:0 0 8px;
      font-size:1.06rem;
    }
    .step p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }

    .faq-list{
      display:grid;
      gap:14px;
    }
    details.faq{
      border-radius:20px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.08);
      background:rgba(255,255,255,.04);
      box-shadow:var(--shadow-soft);
    }
    details.faq[open]{
      border-color:rgba(255,255,255,.16);
      background:rgba(255,255,255,.055);
    }
    .faq summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      font-weight:800;
      color:#fff;
    }
    .faq summary::-webkit-details-marker{display:none}
    .faq summary::after{
      content:"+";
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      background:rgba(255,255,255,.07);
      border:1px solid rgba(255,255,255,.10);
      color:var(--text);
      transition:transform .25s var(--ease), background-color .25s var(--ease);
    }
    details[open] summary::after{
      content:"–";
      transform:rotate(180deg);
      background:rgba(37,214,162,.12);
    }
    .faq .answer{
      padding:0 20px 18px;
      color:var(--muted);
    }

    .cta{
      margin-top:22px;
      border-radius:28px;
      overflow:hidden;
      position:relative;
      background:
        linear-gradient(120deg, rgba(9,13,26,.86), rgba(16,20,40,.64)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border:1px solid rgba(255,255,255,.10);
      box-shadow:var(--shadow);
    }
    .cta-inner{
      padding:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
      flex-wrap:wrap;
    }
    .cta h2{
      margin:0 0 10px;
      font-size:clamp(1.5rem, 2.8vw, 2.4rem);
      line-height:1.15;
    }
    .cta p{
      margin:0;
      max-width:62ch;
      color:rgba(238,241,255,.82);
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }

    .site-footer{
      margin-top:26px;
      padding:28px 0 34px;
      border-top:1px solid rgba(255,255,255,.08);
      background:rgba(6,9,18,.62);
      position:relative;
      z-index:1;
    }
    .footer-grid{
      display:flex;
      justify-content:space-between;
      align-items:flex-start;
      gap:18px;
      flex-wrap:wrap;
      padding-bottom:18px;
    }
    .footer-brand{
      max-width:520px;
      display:grid;
      gap:8px;
    }
    .footer-brand strong{
      font-size:1.08rem;
      letter-spacing:.02em;
    }
    .footer-brand div{
      color:var(--muted);
      line-height:1.8;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:flex-end;
    }
    .footer-links a{
      padding:9px 13px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
      color:var(--muted);
      font-weight:700;
    }
    .footer-links a:hover{
      color:#fff;
      background:rgba(255,255,255,.08);
      border-color:rgba(255,255,255,.14);
      transform:translateY(-1px);
    }
    .copyright{
      padding-top:18px;
      color:var(--muted-2);
      border-top:1px solid rgba(255,255,255,.08);
      font-size:.92rem;
    }

    @media (max-width: 1120px){
      .hero-inner{grid-template-columns:1fr; padding:38px}
      .hero-panel{grid-template-columns:repeat(2, minmax(0, 1fr));}
      .category-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}
      .feature-grid{grid-template-columns:1fr}
      .feature-cards{grid-template-columns:repeat(2, minmax(0, 1fr))}
      .steps-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}
    }
    @media (max-width: 768px){
      .header-inner{min-height:72px}
      .nav-toggle{display:inline-flex}
      .site-nav{
        position:absolute;
        top:100%;
        left:16px;
        right:16px;
        margin-left:0;
        padding:12px;
        border-radius:20px;
        background:rgba(10,13,26,.94);
        border:1px solid rgba(255,255,255,.10);
        box-shadow:var(--shadow);
        display:grid;
        grid-template-columns:1fr 1fr;
        gap:8px;
        transform-origin:top;
        transform:scaleY(0);
        opacity:0;
        pointer-events:none;
        max-height:0;
        overflow:hidden;
        transition:transform .25s var(--ease), opacity .25s var(--ease), max-height .25s var(--ease);
      }
      body.nav-open .site-nav{
        transform:scaleY(1);
        opacity:1;
        pointer-events:auto;
        max-height:360px;
      }
      body.nav-open .nav-toggle span{background:transparent}
      body.nav-open .nav-toggle span::before{top:0; transform:rotate(45deg)}
      body.nav-open .nav-toggle span::after{bottom:0; transform:rotate(-45deg)}
      .hero-inner{padding:28px 22px}
      .hero-panel{grid-template-columns:1fr}
      .search-strip{padding:14px}
      .search-form{flex-basis:100%}
      .search-form button{min-width:96px}
      .category-grid{grid-template-columns:1fr}
      .feature-cards{grid-template-columns:1fr}
      .steps-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .cta-inner{padding:26px 20px}
      .footer-grid{flex-direction:column}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width: 520px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .brand-name{font-size:1rem}
      .brand-sub{font-size:.7rem}
      .hero h1{font-size:clamp(1.8rem, 10vw, 2.7rem)}
      .hero p, .section-desc, .info-card p, .feature-tile p, .step p, .faq .answer, .footer-brand div{
        font-size:.94rem;
      }
      .hero-inner{padding:22px 16px}
      .hero-actions, .cta-actions{width:100%}
      .btn{width:100%}
      .site-nav{
        grid-template-columns:1fr;
      }
      .search-form{
        flex-direction:column;
      }
      .search-form button,
      .search-form input{
        width:100%;
      }
      .hero-card img,
      .feature-visual img{
        min-height:220px;
      }
    }

/* roulang page: category4 */
:root{
      --bg: #0a0d1a;
      --bg-soft: #10152a;
      --surface: rgba(18, 23, 44, 0.82);
      --surface-2: rgba(24, 30, 56, 0.92);
      --card: rgba(20, 26, 49, 0.96);
      --card-soft: rgba(255, 255, 255, 0.03);
      --text: #f5f7ff;
      --muted: #aab1d2;
      --muted-2: #7f88af;
      --line: rgba(255, 255, 255, 0.10);
      --line-2: rgba(255, 255, 255, 0.16);
      --primary: #ff4d8d;
      --primary-2: #ff7aa8;
      --accent: #8b5cf6;
      --accent-2: #5eead4;
      --shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
      --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.18);
      --radius: 22px;
      --radius-sm: 16px;
      --radius-xs: 12px;
      --container: 1180px;
      --gap: 24px;
      --transition: 0.22s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(255, 77, 141, 0.16), transparent 32%),
        radial-gradient(circle at top right, rgba(139, 92, 246, 0.16), transparent 28%),
        linear-gradient(180deg, #0a0d1a 0%, #0c1020 34%, #0a0d1a 100%);
      line-height:1.7;
      overflow-x:hidden;
    }

    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition), opacity var(--transition);
    }

    img{
      display:block;
      max-width:100%;
      height:auto;
    }

    button,
    input,
    textarea,
    select{
      font:inherit;
      color:inherit;
    }

    button,
    input{
      -webkit-appearance:none;
      appearance:none;
    }

    .container{
      width:min(var(--container), calc(100% - 32px));
      margin:0 auto;
    }

    .sr-only{
      position:absolute !important;
      width:1px;
      height:1px;
      padding:0;
      margin:-1px;
      overflow:hidden;
      clip:rect(0,0,0,0);
      white-space:nowrap;
      border:0;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      background: rgba(10, 13, 26, 0.72);
      border-bottom:1px solid rgba(255,255,255,0.08);
    }

    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }

    .brand{
      display:inline-flex;
      align-items:center;
      gap:14px;
      font-weight:800;
      letter-spacing:.02em;
      min-width:0;
    }

    .brand-mark{
      width:44px;
      height:44px;
      display:grid;
      place-items:center;
      border-radius:14px;
      color:#fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 10px 24px rgba(255, 77, 141, 0.28);
      flex:0 0 auto;
    }

    .brand-name{
      display:flex;
      flex-direction:column;
      line-height:1.06;
      font-size:18px;
      color:var(--text);
      white-space:nowrap;
    }

    .brand-sub{
      margin-top:3px;
      font-size:12px;
      font-weight:600;
      color:var(--muted);
      white-space:nowrap;
    }

    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      padding:8px;
      border:1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.03);
      border-radius:999px;
      box-shadow: var(--shadow-soft);
    }

    .site-nav a{
      position:relative;
      padding:10px 16px;
      border-radius:999px;
      font-size:14px;
      font-weight:700;
      color:var(--muted);
      letter-spacing:.01em;
      white-space:nowrap;
    }

    .site-nav a:hover{
      color:#fff;
      background: rgba(255,255,255,0.06);
    }

    .site-nav a.active,
    .site-nav a[aria-current="page"]{
      color:#fff;
      background: linear-gradient(135deg, rgba(255,77,141,0.18), rgba(139,92,246,0.22));
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.10);
    }

    .nav-toggle{
      display:none;
      align-items:center;
      justify-content:center;
      width:46px;
      height:46px;
      border:1px solid rgba(255,255,255,0.10);
      border-radius:14px;
      background: rgba(255,255,255,0.04);
      color:#fff;
      cursor:pointer;
      box-shadow: var(--shadow-soft);
    }

    .nav-toggle span{
      position:relative;
      display:block;
      width:18px;
      height:2px;
      background:#fff;
      border-radius:99px;
    }

    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      position:absolute;
      left:0;
      width:18px;
      height:2px;
      border-radius:99px;
      background:#fff;
      transition:transform var(--transition), top var(--transition), opacity var(--transition);
    }

    .nav-toggle span::before{top:-6px}
    .nav-toggle span::after{top:6px}

    .nav-toggle:focus-visible,
    .site-nav a:focus-visible,
    .brand:focus-visible,
    .btn:focus-visible,
    input:focus-visible,
    details summary:focus-visible{
      outline:2px solid rgba(94, 234, 212, 0.82);
      outline-offset:3px;
    }

    .hero{
      position:relative;
      padding:42px 0 34px;
    }

    .hero-category .hero-grid{
      position:relative;
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:28px;
      align-items:stretch;
      padding:28px;
      border:1px solid rgba(255,255,255,0.10);
      border-radius: calc(var(--radius) + 4px);
      background:
        linear-gradient(135deg, rgba(10,13,26,0.82), rgba(16,21,42,0.74)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      box-shadow: var(--shadow);
      overflow:hidden;
    }

    .hero-category .hero-grid::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(10,13,26,0.18), rgba(10,13,26,0.56)),
        radial-gradient(circle at 80% 20%, rgba(255,77,141,0.18), transparent 24%),
        radial-gradient(circle at 15% 18%, rgba(94,234,212,0.10), transparent 28%);
      pointer-events:none;
    }

    .hero-copy,
    .hero-visual{
      position:relative;
      z-index:1;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border:1px solid rgba(255,255,255,0.10);
      border-radius:999px;
      background: rgba(255,255,255,0.05);
      color: #ffd7e4;
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
      margin-bottom:16px;
    }

    h1,h2,h3,p{
      margin:0;
    }

    .hero-copy h1{
      font-size: clamp(34px, 4.8vw, 62px);
      line-height:1.05;
      letter-spacing:-0.03em;
      max-width:11ch;
    }

    .lead{
      margin-top:18px;
      max-width:56ch;
      color:var(--muted);
      font-size:17px;
    }

    .hero-tags{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
    }

    .hero-tags span,
    .tag{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:34px;
      padding:0 12px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,0.10);
      background: rgba(255,255,255,0.05);
      color:#e8ebff;
      font-size:13px;
      font-weight:700;
      line-height:1;
    }

    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:48px;
      padding:0 18px;
      border-radius:14px;
      font-size:14px;
      font-weight:800;
      border:1px solid transparent;
      cursor:pointer;
      transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
      user-select:none;
    }

    .btn:hover{
      transform: translateY(-1px);
    }

    .btn-primary{
      color:#fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 14px 28px rgba(255, 77, 141, 0.22);
    }

    .btn-primary:hover{
      box-shadow: 0 18px 34px rgba(255, 77, 141, 0.30);
    }

    .btn-secondary{
      color:var(--text);
      border-color: rgba(255,255,255,0.10);
      background: rgba(255,255,255,0.05);
    }

    .btn-secondary:hover{
      background: rgba(255,255,255,0.08);
      border-color: rgba(255,255,255,0.18);
    }

    .quick-search{
      display:flex;
      gap:10px;
      margin-top:22px;
      max-width:620px;
    }

    .quick-search input{
      flex:1;
      height:50px;
      padding:0 16px;
      border-radius:14px;
      border:1px solid rgba(255,255,255,0.12);
      background: rgba(8, 10, 20, 0.48);
      color:#fff;
      box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    }

    .quick-search input::placeholder{
      color:#8d95b7;
    }

    .quick-search .btn{
      min-width:132px;
      height:50px;
    }

    .hero-visual{
      display:flex;
      align-items:stretch;
    }

    .visual-frame{
      position:relative;
      width:100%;
      min-height:100%;
      border-radius: var(--radius);
      overflow:hidden;
      background: rgba(255,255,255,0.04);
      border:1px solid rgba(255,255,255,0.10);
      box-shadow: var(--shadow-soft);
      isolation:isolate;
    }

    .visual-frame img{
      width:100%;
      height:100%;
      min-height:390px;
      object-fit:cover;
      filter:saturate(1.05) contrast(1.04);
      transform: scale(1.01);
    }

    .visual-frame::after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(10,13,26,0.16), rgba(10,13,26,0.72)),
        linear-gradient(180deg, transparent 35%, rgba(10,13,26,0.72) 100%);
      pointer-events:none;
    }

    .visual-overlay-card{
      position:absolute;
      left:18px;
      right:18px;
      bottom:18px;
      z-index:1;
      padding:18px;
      border-radius:18px;
      background: rgba(12, 16, 32, 0.78);
      border:1px solid rgba(255,255,255,0.10);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
    }

    .visual-overlay-card p{
      color:#ffd7e4;
      font-size:13px;
      font-weight:700;
      margin-bottom:4px;
    }

    .visual-overlay-card strong{
      display:block;
      font-size:24px;
      line-height:1.15;
      letter-spacing:-0.02em;
    }

    .visual-overlay-card span{
      display:block;
      margin-top:6px;
      color:var(--muted);
      font-size:14px;
    }

    .section{
      padding:18px 0 26px;
    }

    .section-shell{
      padding:28px;
      border-radius: calc(var(--radius) + 2px);
      border:1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.03);
      box-shadow: var(--shadow-soft);
    }

    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:18px;
      margin-bottom:18px;
    }

    .section-head h2{
      font-size: clamp(24px, 2.6vw, 34px);
      line-height:1.12;
      letter-spacing:-0.03em;
    }

    .section-head p{
      max-width:56ch;
      color:var(--muted);
      font-size:15px;
    }

    .section-note{
      color:var(--muted-2);
      font-size:14px;
    }

    .stats-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:16px;
    }

    .stat-card{
      padding:18px 18px 16px;
      border-radius:18px;
      background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03));
      border:1px solid rgba(255,255,255,0.08);
      box-shadow: var(--shadow-soft);
    }

    .stat-card strong{
      display:block;
      font-size:28px;
      line-height:1;
      margin-bottom:8px;
      color:#fff;
    }

    .stat-card span{
      color:var(--muted);
      font-size:14px;
    }

    .category-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0,1fr));
      gap:18px;
    }

    .category-card{
      position:relative;
      overflow:hidden;
      border-radius:22px;
      border:1px solid rgba(255,255,255,0.09);
      background: var(--card);
      box-shadow: var(--shadow-soft);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }

    .category-card:hover{
      transform: translateY(-3px);
      border-color: rgba(255,255,255,0.18);
      box-shadow: 0 18px 40px rgba(0,0,0,0.28);
    }

    .category-card.active{
      border-color: rgba(255, 77, 141, 0.42);
      box-shadow: 0 0 0 1px rgba(255, 77, 141, 0.15), var(--shadow-soft);
    }

    .category-card .thumb{
      position:relative;
      aspect-ratio: 1.06 / 0.82;
      overflow:hidden;
    }

    .category-card .thumb::after{
      content:"";
      position:absolute;
      inset:0;
      background: linear-gradient(180deg, rgba(10,13,26,0.06), rgba(10,13,26,0.7));
      pointer-events:none;
    }

    .category-card .thumb img{
      width:100%;
      height:100%;
      object-fit:cover;
      transition: transform .38s ease;
    }

    .category-card:hover .thumb img{
      transform: scale(1.05);
    }

    .category-card .body{
      padding:18px;
    }

    .category-card h3{
      font-size:20px;
      line-height:1.2;
      margin-top:12px;
    }

    .category-card p{
      margin-top:10px;
      color:var(--muted);
      font-size:14px;
    }

    .card-link{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      margin-top:16px;
      padding:10px 14px;
      border-radius:12px;
      color:#fff;
      font-size:14px;
      font-weight:800;
      background: rgba(255,255,255,0.07);
      border:1px solid rgba(255,255,255,0.10);
    }

    .card-link:hover{
      background: linear-gradient(135deg, rgba(255,77,141,0.20), rgba(139,92,246,0.22));
      border-color: rgba(255,255,255,0.16);
    }

    .split-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:18px;
      align-items:stretch;
    }

    .panel{
      padding:26px;
      border-radius: calc(var(--radius) + 2px);
      border:1px solid rgba(255,255,255,0.08);
      background: var(--surface);
      box-shadow: var(--shadow-soft);
    }

    .panel h2{
      font-size: clamp(24px, 2.5vw, 32px);
      line-height:1.14;
      letter-spacing:-0.03em;
    }

    .panel .panel-desc{
      margin-top:12px;
      color:var(--muted);
      max-width:56ch;
      font-size:15px;
    }

    .check-list,
    .step-list{
      list-style:none;
      padding:0;
      margin:18px 0 0;
      display:grid;
      gap:12px;
    }

    .check-list li,
    .step-list li{
      position:relative;
      padding:14px 14px 14px 42px;
      border-radius:16px;
      background: rgba(255,255,255,0.04);
      border:1px solid rgba(255,255,255,0.08);
      color:#edf0ff;
    }

    .check-list li::before{
      content:"";
      position:absolute;
      left:15px;
      top:18px;
      width:14px;
      height:14px;
      border-radius:50%;
      background: linear-gradient(135deg, var(--accent-2), var(--primary));
      box-shadow: 0 0 0 4px rgba(94, 234, 212, 0.10);
    }

    .step-list{
      counter-reset: step;
    }

    .step-list li{
      counter-increment: step;
    }

    .step-list li::before{
      content: counter(step);
      position:absolute;
      left:14px;
      top:14px;
      width:22px;
      height:22px;
      display:grid;
      place-items:center;
      border-radius:999px;
      font-size:12px;
      font-weight:900;
      color:#fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
    }

    .media-panel{
      overflow:hidden;
      padding:0;
    }

    .media-panel img{
      width:100%;
      height:100%;
      min-height:360px;
      object-fit:cover;
      border-radius: calc(var(--radius) + 2px);
    }

    .media-panel .media-copy{
      position:absolute;
      inset:auto 18px 18px 18px;
      background: rgba(12, 16, 32, 0.76);
      border:1px solid rgba(255,255,255,0.10);
      border-radius:18px;
      padding:16px 18px;
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      color:#fff;
    }

    .promise-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0,1fr));
      gap:16px;
      margin-top:18px;
    }

    .promise-card{
      padding:18px;
      border-radius:18px;
      background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.03));
      border:1px solid rgba(255,255,255,0.08);
    }

    .promise-card strong{
      display:block;
      font-size:16px;
      margin-bottom:8px;
    }

    .promise-card p{
      color:var(--muted);
      font-size:14px;
    }

    .faq-list{
      display:grid;
      gap:12px;
      margin-top:18px;
    }

    details{
      border-radius:18px;
      border:1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.04);
      overflow:hidden;
      box-shadow: var(--shadow-soft);
    }

    summary{
      list-style:none;
      cursor:pointer;
      padding:18px 20px;
      font-weight:800;
      color:#f8f9ff;
      position:relative;
      padding-right:54px;
    }

    summary::-webkit-details-marker{display:none}

    summary::after{
      content:"+";
      position:absolute;
      right:18px;
      top:50%;
      transform: translateY(-50%);
      width:28px;
      height:28px;
      display:grid;
      place-items:center;
      border-radius:50%;
      color:#fff;
      background: linear-gradient(135deg, rgba(255,77,141,0.22), rgba(139,92,246,0.24));
      border:1px solid rgba(255,255,255,0.10);
    }

    details[open] summary::after{
      content:"−";
    }

    details .answer{
      padding:0 20px 18px;
      color:var(--muted);
      font-size:15px;
    }

    .cta-box{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:28px;
      border-radius: calc(var(--radius) + 4px);
      border:1px solid rgba(255,255,255,0.10);
      background:
        linear-gradient(135deg, rgba(255,77,141,0.12), rgba(139,92,246,0.14)),
        rgba(255,255,255,0.03);
      box-shadow: var(--shadow);
    }

    .cta-copy{
      max-width:60ch;
    }

    .cta-copy h2{
      font-size: clamp(24px, 3vw, 34px);
      line-height:1.15;
      letter-spacing:-0.03em;
    }

    .cta-copy p{
      margin-top:10px;
      color:var(--muted);
    }

    .cta-actions{
      display:flex;
      flex-direction:column;
      gap:12px;
      min-width:min(420px, 100%);
    }

    .cta-actions .quick-search{
      margin-top:0;
    }

    .site-footer{
      margin-top:26px;
      padding:24px 0 30px;
      border-top:1px solid rgba(255,255,255,0.08);
      background: rgba(6, 8, 18, 0.48);
    }

    .footer-grid{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:22px;
      padding:10px 0 18px;
    }

    .footer-brand strong{
      display:block;
      font-size:18px;
      margin-bottom:8px;
    }

    .footer-brand div{
      color:var(--muted);
      max-width:36ch;
      font-size:14px;
    }

    .footer-links{
      display:flex;
      flex-wrap:wrap;
      justify-content:flex-end;
      gap:8px;
    }

    .footer-links a{
      padding:9px 12px;
      border-radius:999px;
      color:var(--muted);
      border:1px solid rgba(255,255,255,0.08);
      background: rgba(255,255,255,0.03);
      font-size:14px;
      font-weight:700;
    }

    .footer-links a:hover{
      color:#fff;
      border-color: rgba(255,255,255,0.16);
      background: rgba(255,255,255,0.06);
    }

    .copyright{
      padding-top:16px;
      border-top:1px solid rgba(255,255,255,0.08);
      color:var(--muted-2);
      font-size:13px;
      text-align:center;
    }

    @media (max-width: 1120px){
      .hero-category .hero-grid,
      .split-grid{
        grid-template-columns:1fr;
      }

      .stats-grid,
      .category-grid{
        grid-template-columns:repeat(2, minmax(0,1fr));
      }

      .promise-grid{
        grid-template-columns:1fr;
      }

      .cta-box{
        flex-direction:column;
        align-items:stretch;
      }

      .cta-actions{
        min-width:0;
      }
    }

    @media (max-width: 768px){
      .header-inner{
        min-height:72px;
      }

      .nav-toggle{
        display:inline-flex;
        margin-left:auto;
      }

      .site-nav{
        position:absolute;
        left:16px;
        right:16px;
        top:calc(100% + 10px);
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:10px;
        border-radius:18px;
        background: rgba(10, 13, 26, 0.96);
        border:1px solid rgba(255,255,255,0.10);
      }

      .site-nav.open{
        display:flex;
      }

      .site-nav a{
        padding:12px 14px;
        border-radius:14px;
      }

      .hero{
        padding:28px 0 24px;
      }

      .hero-category .hero-grid{
        padding:20px;
      }

      .hero-copy h1{
        max-width:100%;
      }

      .visual-frame img{
        min-height:280px;
      }

      .section{
        padding:14px 0 22px;
      }

      .section-shell,
      .panel,
      .cta-box{
        padding:20px;
      }

      .section-head{
        flex-direction:column;
        align-items:flex-start;
      }

      .stats-grid,
      .category-grid{
        grid-template-columns:1fr;
      }

      .quick-search{
        flex-direction:column;
      }

      .quick-search .btn{
        width:100%;
      }

      .footer-grid{
        flex-direction:column;
      }

      .footer-links{
        justify-content:flex-start;
      }
    }

    @media (max-width: 520px){
      .container{
        width:min(var(--container), calc(100% - 24px));
      }

      .hero-copy h1{
        font-size: clamp(30px, 10vw, 42px);
      }

      .lead,
      .section-head p,
      .panel .panel-desc,
      .cta-copy p{
        font-size:14px;
      }

      .brand-name{
        font-size:16px;
      }

      .brand-sub{
        font-size:11px;
      }

      .hero-tags,
      .hero-actions{
        gap:8px;
      }

      .btn{
        width:100%;
      }

      .hero-actions .btn{
        width:calc(50% - 4px);
      }

      .hero-actions{
        display:flex;
      }

      .visual-overlay-card strong{
        font-size:20px;
      }

      summary{
        font-size:15px;
      }
    }

    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *,
      *::before,
      *::after{
        animation-duration:.01ms !important;
        animation-iteration-count:1 !important;
        transition-duration:.01ms !important;
      }
    }

/* roulang page: category3 */
:root {
      --bg: #0b1020;
      --bg-2: #10182d;
      --surface: rgba(16, 24, 45, 0.78);
      --surface-2: rgba(255, 255, 255, 0.06);
      --card: rgba(255, 255, 255, 0.08);
      --card-strong: rgba(255, 255, 255, 0.12);
      --text: #f4f7ff;
      --muted: #b5bfdc;
      --subtle: #8a94b9;
      --border: rgba(255, 255, 255, 0.12);
      --border-strong: rgba(255, 255, 255, 0.2);
      --primary: #ff5b8a;
      --primary-2: #8c6cff;
      --accent: #24d3c7;
      --warm: #ffb36b;
      --shadow: 0 20px 50px rgba(0, 0, 0, 0.34);
      --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.22);
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --container: 1180px;
      --gap: 24px;
      --transition: 220ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      color: var(--text);
      line-height: 1.7;
      background:
        radial-gradient(circle at top left, rgba(255, 91, 138, 0.18), transparent 32%),
        radial-gradient(circle at 80% 10%, rgba(140, 108, 255, 0.18), transparent 30%),
        radial-gradient(circle at 50% 100%, rgba(36, 211, 199, 0.12), transparent 28%),
        linear-gradient(180deg, #0b1020 0%, #0e152a 40%, #0b1020 100%);
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition), opacity var(--transition);
    }

    img {
      display: block;
      max-width: 100%;
    }

    button,
    input,
    textarea,
    select {
      font: inherit;
    }

    button {
      border: 0;
      background: none;
      color: inherit;
      cursor: pointer;
    }

    :focus-visible {
      outline: 3px solid rgba(36, 211, 199, 0.9);
      outline-offset: 3px;
      border-radius: 12px;
    }

    .site-shell {
      position: relative;
      min-height: 100vh;
    }

    .container {
      width: min(var(--container), calc(100% - 32px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 40;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      background: rgba(10, 15, 29, 0.68);
      border-bottom: 1px solid var(--border);
    }

    .header-inner {
      min-height: 76px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 14px;
      min-width: 0;
      flex-shrink: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      font-weight: 800;
      font-size: 18px;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 12px 24px rgba(255, 91, 138, 0.28);
    }

    .brand-name {
      display: flex;
      flex-direction: column;
      line-height: 1.1;
      font-size: 18px;
      font-weight: 800;
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .brand-sub {
      margin-top: 5px;
      font-size: 12px;
      font-weight: 600;
      color: var(--muted);
      white-space: nowrap;
    }

    .site-nav {
      display: flex;
      align-items: center;
      gap: 8px;
      padding: 8px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.04);
      border-radius: 999px;
      box-shadow: var(--shadow-soft);
    }

    .site-nav a {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 42px;
      padding: 0 16px;
      border-radius: 999px;
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.01em;
      white-space: nowrap;
    }

    .site-nav a:hover {
      color: var(--text);
      background: rgba(255, 255, 255, 0.06);
    }

    .site-nav a.active,
    .site-nav a[aria-current="page"] {
      color: #fff;
      background: linear-gradient(135deg, rgba(255, 91, 138, 0.92), rgba(140, 108, 255, 0.92));
      box-shadow: 0 12px 24px rgba(140, 108, 255, 0.22);
    }

    .nav-toggle {
      display: none;
      width: 48px;
      height: 48px;
      border-radius: 14px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.05);
      position: relative;
      flex-shrink: 0;
      box-shadow: var(--shadow-soft);
    }

    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after {
      content: "";
      position: absolute;
      left: 50%;
      width: 18px;
      height: 2px;
      border-radius: 10px;
      background: #fff;
      transform: translateX(-50%);
      transition: transform var(--transition), top var(--transition), opacity var(--transition);
    }

    .nav-toggle span {
      top: 50%;
      transform: translate(-50%, -50%);
    }

    .nav-toggle span::before {
      top: -6px;
    }

    .nav-toggle span::after {
      top: 6px;
    }

    .hero {
      position: relative;
      padding: 46px 0 18px;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(11, 16, 32, 0.05), rgba(11, 16, 32, 0.75)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      opacity: 0.35;
      pointer-events: none;
      mask-image: linear-gradient(180deg, #000 0%, #000 84%, transparent 100%);
    }

    .hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 26px;
      align-items: stretch;
      z-index: 1;
    }

    .hero-copy,
    .hero-panel,
    .section-card,
    .cta-box,
    .faq-intro {
      border: 1px solid var(--border);
      background: var(--surface);
      box-shadow: var(--shadow);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }

    .hero-copy {
      border-radius: var(--radius-lg);
      padding: 34px;
      overflow: hidden;
      position: relative;
    }

    .hero-copy::after {
      content: "";
      position: absolute;
      inset: auto -12% -35% auto;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(255, 91, 138, 0.22), transparent 65%);
      pointer-events: none;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: #fff;
      font-size: 13px;
      font-weight: 700;
      letter-spacing: 0.02em;
    }

    .hero h1,
    .section-head h2,
    .text-panel h2,
    .faq-intro h2,
    .cta-content h2 {
      margin: 14px 0 0;
      line-height: 1.14;
      letter-spacing: -0.03em;
    }

    .hero h1 {
      font-size: clamp(34px, 4vw, 60px);
      max-width: 12ch;
    }

    .hero p {
      margin: 18px 0 0;
      color: var(--muted);
      font-size: 16px;
      max-width: 58ch;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 48px;
      padding: 0 18px;
      border-radius: 14px;
      border: 1px solid transparent;
      font-weight: 800;
      letter-spacing: 0.01em;
      transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition), color var(--transition);
    }

    .btn:hover {
      transform: translateY(-1px);
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--primary-2));
      box-shadow: 0 14px 28px rgba(140, 108, 255, 0.28);
    }

    .btn-primary:hover {
      box-shadow: 0 18px 34px rgba(255, 91, 138, 0.3);
    }

    .btn-secondary {
      color: var(--text);
      background: rgba(255, 255, 255, 0.06);
      border-color: rgba(255, 255, 255, 0.12);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.18);
    }

    .hero-chips {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 24px;
    }

    .hero-chips span,
    .mini-tag,
    .topic-meta span,
    .stat-pill {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 8px 12px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--muted);
      font-size: 13px;
      font-weight: 700;
    }

    .hero-panel {
      border-radius: var(--radius-lg);
      overflow: hidden;
      position: relative;
      min-height: 360px;
      display: grid;
    }

    .hero-panel img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: saturate(1.04) contrast(1.02);
      opacity: 0.82;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(7, 10, 20, 0.1), rgba(7, 10, 20, 0.72)),
        linear-gradient(135deg, rgba(255, 91, 138, 0.08), rgba(140, 108, 255, 0.08));
      pointer-events: none;
    }

    .glass-box {
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 18px;
      z-index: 2;
      padding: 20px;
      border-radius: 22px;
      background: rgba(11, 16, 32, 0.64);
      border: 1px solid rgba(255, 255, 255, 0.16);
      box-shadow: 0 18px 36px rgba(0, 0, 0, 0.28);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
    }

    .glass-box strong {
      display: block;
      font-size: 18px;
      margin-bottom: 10px;
    }

    .glass-box ul {
      margin: 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .glass-box li {
      padding: 12px 14px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.06);
      color: var(--muted);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .section {
      padding: 26px 0;
      position: relative;
    }

    .section.alt {
      padding-top: 16px;
    }

    .section-head {
      display: grid;
      gap: 10px;
      margin-bottom: 18px;
    }

    .section-head h2,
    .text-panel h2,
    .faq-intro h2,
    .cta-content h2 {
      font-size: clamp(26px, 2.6vw, 40px);
    }

    .section-head p {
      margin: 0;
      color: var(--muted);
      max-width: 68ch;
    }

    .topic-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: var(--gap);
    }

    .topic-card {
      overflow: hidden;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      background: var(--card);
      box-shadow: var(--shadow-soft);
      display: flex;
      flex-direction: column;
      min-height: 100%;
      transform: translateY(0);
    }

    .topic-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255, 255, 255, 0.22);
      background: var(--card-strong);
    }

    .topic-card.active {
      border-color: rgba(36, 211, 199, 0.4);
      box-shadow: 0 18px 34px rgba(36, 211, 199, 0.12), var(--shadow-soft);
    }

    .topic-thumb {
      position: relative;
      aspect-ratio: 16 / 10;
      overflow: hidden;
      background: rgba(255, 255, 255, 0.05);
    }

    .topic-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform var(--transition), opacity var(--transition);
      opacity: 0.88;
    }

    .topic-card:hover .topic-thumb img {
      transform: scale(1.04);
      opacity: 1;
    }

    .topic-thumb::after {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(180deg, transparent 0%, rgba(7, 10, 20, 0.2) 55%, rgba(7, 10, 20, 0.68) 100%);
      pointer-events: none;
    }

    .topic-body {
      padding: 18px;
      display: grid;
      gap: 10px;
    }

    .topic-title {
      margin: 0;
      font-size: 18px;
      line-height: 1.25;
    }

    .topic-desc {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .topic-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-top: 6px;
    }

    .topic-link {
      color: #fff;
      font-size: 14px;
      font-weight: 800;
    }

    .topic-link::after {
      content: "→";
      margin-left: 8px;
      transition: transform var(--transition);
    }

    .topic-card:hover .topic-link::after {
      transform: translateX(3px);
    }

    .topic-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .feature-grid {
      display: grid;
      grid-template-columns: 0.92fr 1.08fr;
      gap: var(--gap);
      align-items: center;
    }

    .image-panel {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, 0.05);
      box-shadow: var(--shadow);
      min-height: 340px;
      position: relative;
    }

    .image-panel img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 340px;
      filter: saturate(1.02) contrast(1.02);
    }

    .text-panel {
      padding: 10px 4px 10px 4px;
    }

    .text-panel p {
      margin: 16px 0 0;
      color: var(--muted);
      max-width: 60ch;
    }

    .check-list {
      margin: 20px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      padding: 14px 16px;
      border-radius: 16px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      color: var(--muted);
    }

    .check-list li::before {
      content: "✓";
      flex: 0 0 auto;
      width: 22px;
      height: 22px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      color: #031018;
      background: linear-gradient(135deg, var(--accent), #87f7e8);
      font-weight: 900;
      margin-top: 2px;
    }

    .note-box {
      margin-top: 18px;
      padding: 16px 18px;
      border-radius: 18px;
      background: linear-gradient(135deg, rgba(255, 91, 138, 0.12), rgba(140, 108, 255, 0.12));
      border: 1px solid rgba(255, 255, 255, 0.12);
      color: #f8faff;
    }

    .benefit-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: var(--gap);
    }

    .benefit-card {
      padding: 22px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      background: var(--card);
      box-shadow: var(--shadow-soft);
      min-height: 100%;
      transition: transform var(--transition), background-color var(--transition), border-color var(--transition);
    }

    .benefit-card:hover {
      transform: translateY(-4px);
      background: var(--card-strong);
      border-color: rgba(255, 255, 255, 0.2);
    }

    .benefit-icon {
      width: 50px;
      height: 50px;
      border-radius: 16px;
      display: grid;
      place-items: center;
      font-weight: 900;
      font-size: 18px;
      color: #fff;
      background: linear-gradient(135deg, rgba(255, 91, 138, 0.92), rgba(140, 108, 255, 0.92));
      box-shadow: 0 14px 28px rgba(255, 91, 138, 0.22);
    }

    .benefit-card h3 {
      margin: 16px 0 10px;
      font-size: 18px;
    }

    .benefit-card p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
    }

    .faq-layout {
      display: grid;
      grid-template-columns: 0.78fr 1.22fr;
      gap: var(--gap);
      align-items: start;
    }

    .faq-intro {
      border-radius: var(--radius-lg);
      padding: 28px;
      position: sticky;
      top: 98px;
    }

    .faq-intro p {
      margin: 16px 0 22px;
      color: var(--muted);
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      overflow: hidden;
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      background: var(--card);
      box-shadow: var(--shadow-soft);
    }

    .faq-item summary {
      list-style: none;
      cursor: pointer;
      padding: 18px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      font-size: 16px;
      font-weight: 800;
    }

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

    .faq-item summary::after {
      content: "+";
      flex: 0 0 auto;
      width: 28px;
      height: 28px;
      border-radius: 999px;
      display: grid;
      place-items: center;
      background: rgba(255, 255, 255, 0.08);
      color: #fff;
      transition: transform var(--transition), background-color var(--transition);
    }

    .faq-item[open] summary::after {
      content: "–";
      background: rgba(36, 211, 199, 0.14);
    }

    .faq-item div {
      padding: 0 20px 20px;
      color: var(--muted);
    }

    .cta-section {
      padding-top: 6px;
      padding-bottom: 40px;
    }

    .cta-box {
      border-radius: 30px;
      padding: 28px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
      background:
        radial-gradient(circle at top right, rgba(255, 91, 138, 0.14), transparent 30%),
        radial-gradient(circle at left bottom, rgba(36, 211, 199, 0.12), transparent 26%),
        var(--surface);
    }

    .cta-content {
      max-width: 66ch;
    }

    .cta-content p {
      margin: 14px 0 0;
      color: var(--muted);
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      flex-shrink: 0;
    }

    .site-footer {
      padding: 32px 0 26px;
      border-top: 1px solid var(--border);
      background: rgba(6, 10, 22, 0.76);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
      padding-bottom: 18px;
    }

    .footer-brand strong {
      display: block;
      font-size: 18px;
      margin-bottom: 8px;
    }

    .footer-brand div {
      color: var(--muted);
      max-width: 34ch;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 10px;
    }

    .footer-links a {
      padding: 10px 14px;
      border-radius: 999px;
      color: var(--muted);
      border: 1px solid rgba(255, 255, 255, 0.08);
      background: rgba(255, 255, 255, 0.04);
    }

    .footer-links a:hover {
      color: #fff;
      border-color: rgba(255, 255, 255, 0.16);
      background: rgba(255, 255, 255, 0.08);
    }

    .copyright {
      padding-top: 18px;
      color: var(--subtle);
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 13px;
    }

    @media (max-width: 1100px) {
      .topic-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .benefit-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .faq-layout {
        grid-template-columns: 1fr;
      }

      .faq-intro {
        position: relative;
        top: auto;
      }
    }

    @media (max-width: 900px) {
      .header-inner {
        min-height: 70px;
      }

      .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }

      .site-nav {
        position: absolute;
        top: calc(100% + 12px);
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 10px;
        border-radius: 20px;
        background: rgba(10, 15, 29, 0.94);
        box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
      }

      .site-nav.open {
        display: flex;
      }

      .site-nav a {
        justify-content: flex-start;
        width: 100%;
      }

      .hero-grid,
      .feature-grid,
      .cta-box {
        grid-template-columns: 1fr;
      }

      .cta-box {
        display: grid;
      }

      .hero {
        padding-top: 24px;
      }

      .hero-panel {
        min-height: 320px;
      }

      .footer-grid {
        grid-template-columns: 1fr;
      }

      .footer-links {
        justify-content: flex-start;
      }
    }

    @media (max-width: 680px) {
      .container {
        width: min(var(--container), calc(100% - 24px));
      }

      .hero-copy,
      .hero-panel,
      .faq-intro,
      .cta-box {
        border-radius: 22px;
      }

      .hero-copy {
        padding: 24px;
      }

      .section {
        padding: 18px 0;
      }

      .topic-grid,
      .benefit-grid {
        grid-template-columns: 1fr;
      }

      .topic-body,
      .benefit-card,
      .faq-item summary,
      .faq-item div,
      .glass-box {
        padding-left: 16px;
        padding-right: 16px;
      }

      .brand-sub {
        display: none;
      }

      .brand-name {
        font-size: 16px;
      }

      .hero h1 {
        max-width: 100%;
      }

      .hero-actions,
      .cta-actions {
        flex-direction: column;
        align-items: stretch;
      }

      .btn {
        width: 100%;
      }
    }

/* roulang page: article */
:root{
      --bg:#07111f;
      --bg-soft:#0b1728;
      --panel:#0f1d33;
      --panel-2:#12253f;
      --card:#101f36;
      --line:rgba(255,255,255,.08);
      --line-strong:rgba(255,255,255,.14);
      --text:#e8eef8;
      --muted:#9eb0c7;
      --soft:#c7d3e3;
      --brand:#6ee7ff;
      --brand-2:#9f7aea;
      --accent:#38bdf8;
      --ok:#22c55e;
      --warn:#f59e0b;
      --danger:#fb7185;
      --shadow:0 16px 40px rgba(0,0,0,.28);
      --shadow-soft:0 10px 28px rgba(0,0,0,.18);
      --radius:22px;
      --radius-sm:14px;
      --radius-xs:10px;
      --container:1180px;
      --gap:24px;
      --gap-lg:36px;
      --transition:220ms ease;
      --header-h:76px;
      color-scheme: dark;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--text);
      background:
        radial-gradient(1200px 500px at 10% -10%, rgba(110,231,255,.16), transparent 55%),
        radial-gradient(900px 400px at 90% 0%, rgba(159,122,234,.14), transparent 50%),
        linear-gradient(180deg, #08101d 0%, #07111f 100%);
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:color var(--transition),background var(--transition),border-color var(--transition),transform var(--transition),opacity var(--transition)}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(110,231,255,.28);color:#fff}
    .container{
      width:min(100% - 32px, var(--container));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(160%) blur(16px);
      background:rgba(8,16,29,.72);
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .header-inner{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:14px;
      min-width:0;
      font-weight:800;
      letter-spacing:.2px;
    }
    .brand-mark{
      width:42px;height:42px;
      display:grid;place-items:center;
      border-radius:14px;
      color:#03101a;
      background:linear-gradient(135deg,var(--brand),#b4f3ff 55%,#d5c4ff);
      box-shadow:0 10px 20px rgba(110,231,255,.18);
      flex:0 0 auto;
    }
    .brand-name{
      display:flex;
      flex-direction:column;
      gap:2px;
      line-height:1.1;
      font-size:1.02rem;
      white-space:nowrap;
    }
    .brand-sub{
      font-size:.78rem;
      color:var(--muted);
      font-weight:600;
    }
    .site-nav{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:center;
    }
    .site-nav a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:0 15px;
      border:1px solid transparent;
      border-radius:999px;
      color:var(--soft);
      background:transparent;
      font-size:.95rem;
      font-weight:600;
      letter-spacing:.1px;
    }
    .site-nav a:hover{
      color:#fff;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.08);
      transform:translateY(-1px);
    }
    .site-nav a.active{
      color:#07111f;
      background:linear-gradient(135deg,var(--brand),#b4f3ff);
      border-color:transparent;
      box-shadow:0 8px 18px rgba(110,231,255,.18);
    }
    .nav-toggle{
      display:none;
      width:46px;height:46px;
      align-items:center;justify-content:center;
      border:1px solid rgba(255,255,255,.09);
      border-radius:14px;
      background:rgba(255,255,255,.04);
      color:var(--text);
      cursor:pointer;
      transition:transform var(--transition),background var(--transition),border-color var(--transition);
    }
    .nav-toggle:hover{transform:translateY(-1px);background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.15)}
    .nav-toggle span,
    .nav-toggle span::before,
    .nav-toggle span::after{
      content:"";
      display:block;
      width:18px;height:2px;
      border-radius:999px;
      background:currentColor;
      position:relative;
    }
    .nav-toggle span::before{position:absolute;top:-6px;left:0}
    .nav-toggle span::after{position:absolute;top:6px;left:0}

    .page-banner{
      position:relative;
      overflow:hidden;
      padding:34px 0 18px;
    }
    .page-banner::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(8,16,29,.1), rgba(8,16,29,.72)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      opacity:.26;
      pointer-events:none;
      filter:saturate(1.1);
    }
    .page-banner .container{
      position:relative;
      z-index:1;
    }
    .banner-grid{
      display:grid;
      grid-template-columns:minmax(0,1.15fr) minmax(320px,.85fr);
      gap:var(--gap-lg);
      align-items:center;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border:1px solid rgba(110,231,255,.22);
      background:rgba(110,231,255,.08);
      border-radius:999px;
      color:#d9f8ff;
      font-size:.85rem;
      font-weight:700;
      letter-spacing:.2px;
      margin-bottom:16px;
    }
    .eyebrow::before{
      content:"";
      width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,var(--brand),#fff);
      box-shadow:0 0 0 4px rgba(110,231,255,.16);
    }
    .page-banner h1{
      margin:0;
      font-size:clamp(2rem, 4vw, 3.55rem);
      line-height:1.12;
      letter-spacing:-.03em;
      text-wrap:balance;
    }
    .page-banner p{
      margin:16px 0 0;
      max-width:66ch;
      color:var(--soft);
      font-size:1.02rem;
    }
    .banner-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.08);
      color:#d7e4f4;
      font-size:.92rem;
      font-weight:600;
    }
    .meta-pill strong{color:#fff}
    .hero-card{
      position:relative;
      border-radius:28px;
      overflow:hidden;
      min-height:340px;
      background:
        linear-gradient(180deg, rgba(3,10,20,.05), rgba(3,10,20,.55)),
        url('/assets/images/coverpic/cover-5.webp') center/cover no-repeat;
      box-shadow:var(--shadow);
      border:1px solid rgba(255,255,255,.08);
    }
    .hero-card::after{
      content:"";
      position:absolute;
      inset:auto 18px 18px 18px;
      height:34%;
      border-radius:22px;
      background:linear-gradient(180deg, rgba(15,29,51,.18), rgba(15,29,51,.82));
      backdrop-filter:blur(10px);
      border:1px solid rgba(255,255,255,.08);
    }
    .hero-card-content{
      position:absolute;
      inset:auto 26px 26px 26px;
      z-index:1;
      display:grid;
      gap:10px;
    }
    .hero-card-title{
      font-size:1.15rem;
      font-weight:800;
      color:#fff;
    }
    .hero-card-text{
      color:#d6e4f7;
      font-size:.95rem;
      max-width:34ch;
    }
    .hero-card-list{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      padding:8px 11px;
      border-radius:999px;
      background:rgba(110,231,255,.12);
      border:1px solid rgba(110,231,255,.18);
      color:#ddfbff;
      font-size:.84rem;
      font-weight:700;
    }

    .content-wrap{
      padding:24px 0 28px;
    }
    .content-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) 320px;
      gap:var(--gap-lg);
      align-items:start;
    }
    .card{
      background:linear-gradient(180deg, rgba(16,31,54,.96), rgba(13,26,45,.96));
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
    }
    .article-card{
      overflow:hidden;
    }
    .article-head{
      padding:26px 26px 18px;
      border-bottom:1px solid rgba(255,255,255,.06);
    }
    .article-head .article-title{
      margin:0;
      font-size:clamp(1.55rem, 2.8vw, 2.2rem);
      line-height:1.2;
      letter-spacing:-.02em;
      text-wrap:balance;
    }
    .article-intro{
      margin:14px 0 0;
      color:var(--soft);
      font-size:1rem;
    }
    .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .article-body{
      padding:26px;
    }
    .richtext{
      font-size:1.03rem;
      color:#e8eef8;
      word-break:break-word;
    }
    .richtext > :first-child{margin-top:0}
    .richtext > :last-child{margin-bottom:0}
    .richtext h2,.richtext h3{
      margin:1.8em 0 .8em;
      line-height:1.25;
      letter-spacing:-.01em;
    }
    .richtext h2{font-size:1.48rem}
    .richtext h3{font-size:1.18rem}
    .richtext p{margin:0 0 1.05em;color:#e7eefb}
    .richtext ul,.richtext ol{margin:0 0 1.2em 1.2em;padding:0}
    .richtext li{margin:.45em 0;color:#d9e6f8}
    .richtext a{
      color:#8ee9ff;
      text-decoration:underline;
      text-decoration-color:rgba(142,233,255,.32);
      text-underline-offset:3px;
    }
    .richtext a:hover{color:#c1f5ff;text-decoration-color:rgba(193,245,255,.65)}
    .richtext blockquote{
      margin:1.4em 0;
      padding:18px 18px 18px 20px;
      border-left:4px solid var(--brand);
      background:rgba(110,231,255,.08);
      border-radius:0 16px 16px 0;
      color:#def8ff;
    }
    .richtext img{
      border-radius:18px;
      margin:1.2em 0;
      box-shadow:0 12px 28px rgba(0,0,0,.22);
    }
    .richtext pre{
      overflow:auto;
      padding:18px;
      border-radius:18px;
      background:#09121f;
      border:1px solid rgba(255,255,255,.08);
      color:#d9e8fb;
    }
    .richtext code{
      padding:.16em .38em;
      border-radius:8px;
      background:rgba(255,255,255,.07);
      color:#e8f7ff;
    }
    .richtext table{
      width:100%;
      border-collapse:collapse;
      margin:1.2em 0;
      overflow:hidden;
      border-radius:16px;
      display:block;
    }
    .richtext th,.richtext td{
      padding:12px 14px;
      border-bottom:1px solid rgba(255,255,255,.08);
      text-align:left;
      vertical-align:top;
    }
    .richtext th{
      background:rgba(255,255,255,.05);
      color:#fff;
      font-weight:700;
    }

    .article-empty{
      padding:34px 26px;
      text-align:center;
    }
    .article-empty h2{
      margin:0 0 10px;
      font-size:1.5rem;
    }
    .article-empty p{
      margin:0 0 18px;
      color:var(--soft);
    }

    .side-stack{
      display:grid;
      gap:18px;
      position:sticky;
      top:98px;
    }
    .side-card{
      padding:22px;
    }
    .side-title{
      margin:0 0 14px;
      font-size:1.04rem;
      letter-spacing:-.01em;
    }
    .side-desc{
      margin:0;
      color:var(--soft);
      font-size:.96rem;
    }
    .info-list{
      list-style:none;
      padding:0;
      margin:16px 0 0;
      display:grid;
      gap:12px;
    }
    .info-list li{
      display:flex;
      align-items:flex-start;
      gap:12px;
      padding:12px 0;
      border-top:1px solid rgba(255,255,255,.06);
    }
    .info-list li:first-child{border-top:none;padding-top:0}
    .dot{
      width:10px;height:10px;border-radius:50%;
      margin-top:.45em;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 0 0 4px rgba(110,231,255,.12);
      flex:0 0 auto;
    }
    .info-list strong{display:block;color:#fff}
    .info-list span{display:block;color:var(--muted);font-size:.92rem}
    .mini-cover{
      margin-top:16px;
      border-radius:18px;
      overflow:hidden;
      aspect-ratio:16/10;
      background:#13233a;
      border:1px solid rgba(255,255,255,.08);
      box-shadow:0 12px 24px rgba(0,0,0,.16);
    }
    .mini-cover img{
      width:100%;
      height:100%;
      object-fit:cover;
    }

    .section{
      padding:16px 0 0;
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:16px;
      margin:0 0 18px;
    }
    .section-head h2{
      margin:0;
      font-size:1.35rem;
      letter-spacing:-.01em;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
      max-width:60ch;
    }
    .feature-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
    }
    .feature{
      padding:20px;
      border-radius:20px;
      background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
      border:1px solid rgba(255,255,255,.08);
      box-shadow:var(--shadow-soft);
      transition:transform var(--transition),border-color var(--transition),background var(--transition);
    }
    .feature:hover{
      transform:translateY(-3px);
      border-color:rgba(110,231,255,.18);
      background:linear-gradient(180deg, rgba(110,231,255,.08), rgba(255,255,255,.02));
    }
    .feature h3{
      margin:12px 0 8px;
      font-size:1.05rem;
    }
    .feature p{
      margin:0;
      color:var(--muted);
      font-size:.95rem;
    }
    .icon{
      width:46px;height:46px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(110,231,255,.18), rgba(159,122,234,.18));
      border:1px solid rgba(255,255,255,.1);
      color:#fff;
      font-weight:800;
    }

    .faq-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:16px;
    }
    .faq-item{
      padding:20px 22px;
      border-radius:20px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.08);
    }
    .faq-item h3{
      margin:0 0 10px;
      font-size:1.02rem;
    }
    .faq-item p{
      margin:0;
      color:var(--soft);
      font-size:.96rem;
    }

    .cta{
      margin:24px 0 0;
      padding:26px;
      border-radius:28px;
      background:
        linear-gradient(135deg, rgba(110,231,255,.16), rgba(159,122,234,.12)),
        linear-gradient(180deg, rgba(16,31,54,.98), rgba(13,26,45,.98));
      border:1px solid rgba(255,255,255,.1);
      box-shadow:var(--shadow);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .cta h2{
      margin:0 0 8px;
      font-size:1.4rem;
    }
    .cta p{
      margin:0;
      color:#dbe8f8;
      max-width:60ch;
    }
    .btn-row{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:46px;
      padding:0 18px;
      border-radius:14px;
      border:1px solid transparent;
      font-weight:700;
      letter-spacing:.1px;
      cursor:pointer;
      transition:transform var(--transition),box-shadow var(--transition),background var(--transition),border-color var(--transition),color var(--transition);
      user-select:none;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{
      color:#07111f;
      background:linear-gradient(135deg,var(--brand),#b4f3ff);
      box-shadow:0 12px 24px rgba(110,231,255,.18);
    }
    .btn-primary:hover{box-shadow:0 16px 28px rgba(110,231,255,.22)}
    .btn-ghost{
      color:#eef5ff;
      background:rgba(255,255,255,.05);
      border-color:rgba(255,255,255,.1);
    }
    .btn-ghost:hover{
      border-color:rgba(255,255,255,.18);
      background:rgba(255,255,255,.08);
    }
    .btn:focus-visible,
    .site-nav a:focus-visible,
    .brand:focus-visible,
    .footer-links a:focus-visible,
    input:focus-visible,
    textarea:focus-visible{
      outline:3px solid rgba(110,231,255,.35);
      outline-offset:2px;
    }

    .site-footer{
      margin-top:34px;
      padding:28px 0 22px;
      border-top:1px solid rgba(255,255,255,.06);
      background:linear-gradient(180deg, rgba(8,16,29,.15), rgba(8,16,29,.72));
    }
    .footer-grid{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:24px;
      padding-bottom:20px;
    }
    .footer-brand strong{
      display:block;
      font-size:1.08rem;
      margin-bottom:8px;
    }
    .footer-brand div{
      color:var(--muted);
      max-width:34ch;
      font-size:.94rem;
    }
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px 14px;
      justify-content:flex-end;
    }
    .footer-links a{
      color:#d7e4f4;
      font-weight:600;
      font-size:.95rem;
      opacity:.9;
    }
    .footer-links a:hover{color:#fff;opacity:1}
    .copyright{
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.06);
      color:var(--muted);
      font-size:.9rem;
    }

    @media (max-width: 1080px){
      .banner-grid,
      .content-grid{
        grid-template-columns:1fr;
      }
      .side-stack{
        position:static;
      }
      .feature-grid{
        grid-template-columns:repeat(2,minmax(0,1fr));
      }
    }
    @media (max-width: 840px){
      .site-nav{
        display:none;
        width:100%;
        padding:10px 0 14px;
      }
      .site-nav.is-open{
        display:flex;
      }
      .header-inner{
        flex-wrap:wrap;
        padding:10px 0;
      }
      .nav-toggle{
        display:inline-flex;
      }
      .banner-grid{
        gap:18px;
      }
      .page-banner{
        padding-top:22px;
      }
      .faq-grid{
        grid-template-columns:1fr;
      }
      .cta,
      .footer-grid{
        flex-direction:column;
        align-items:flex-start;
      }
      .btn-row,
      .footer-links{
        justify-content:flex-start;
      }
    }
    @media (max-width: 640px){
      .container{width:min(100% - 22px, var(--container))}
      .page-banner h1{
        font-size:1.9rem;
      }
      .feature-grid{
        grid-template-columns:1fr;
      }
      .hero-card{
        min-height:280px;
      }
      .article-head,
      .article-body,
      .side-card,
      .cta{
        padding:18px;
      }
      .article-body{
        padding-top:18px;
      }
      .meta-pill,
      .tag{
        font-size:.82rem;
      }
      .site-nav a{
        width:100%;
        justify-content:flex-start;
        border-radius:14px;
      }
    }