/* roulang page: index */
:root{
      --bg:#09070D;
      --bg-2:#0F0B16;
      --panel:#14101B;
      --panel-2:#1B1424;
      --panel-3:#21172D;
      --text:#EDE7F0;
      --muted:#AFA3B8;
      --soft:#D8CCDF;
      --primary:#FF3D9A;
      --primary-2:#F6C1D9;
      --accent:#9B5CFF;
      --accent-2:#6F43D8;
      --line:rgba(255,255,255,.10);
      --line-strong:rgba(255,255,255,.18);
      --shadow:0 24px 80px rgba(0,0,0,.42);
      --glow:0 0 34px rgba(255,61,154,.28),0 0 54px rgba(155,92,255,.18);
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --nav-h:78px;
      --ease:cubic-bezier(.22,.8,.22,1);
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,BlinkMacSystemFont,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 4%,rgba(255,61,154,.16),transparent 30%),
        radial-gradient(circle at 88% 12%,rgba(155,92,255,.18),transparent 34%),
        linear-gradient(180deg,#09070D 0%,#0B0810 42%,#09070D 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      opacity:.34;
      z-index:-1;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:42px 42px;
      mask-image:linear-gradient(to bottom,rgba(0,0,0,.85),transparent 82%);
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    ::selection{background:rgba(255,61,154,.35);color:#fff}

    .container{
      width:min(100% - 40px,var(--container));
      margin-inline:auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:100;
      height:var(--nav-h);
      background:rgba(9,7,13,.88);
      border-bottom:1px solid var(--line);
      backdrop-filter:blur(18px);
      box-shadow:0 14px 36px rgba(0,0,0,.32);
    }
    .nav-wrap{
      height:var(--nav-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:.01em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      flex:0 0 42px;
      border-radius:50%;
      position:relative;
      background:
        radial-gradient(circle at 58% 42%,rgba(255,255,255,.78) 0 3px,transparent 4px),
        conic-gradient(from 210deg,var(--primary),var(--accent),transparent 62%,var(--primary));
      box-shadow:var(--glow);
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:8px;
      border-radius:50%;
      background:var(--bg);
      box-shadow:inset 0 0 12px rgba(255,255,255,.08);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.12;
    }
    .brand-text strong{
      max-width:320px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      font-size:16px;
    }
    .brand-text span{
      margin-top:4px;
      font-size:11px;
      color:var(--muted);
      letter-spacing:.16em;
      text-transform:uppercase;
    }
    .main-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      padding:6px;
      border:1px solid rgba(255,255,255,.07);
      border-radius:999px;
      background:rgba(255,255,255,.025);
    }
    .main-nav a{
      position:relative;
      padding:10px 16px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      transition:color .22s var(--ease),background .22s var(--ease);
      white-space:nowrap;
    }
    .main-nav a::after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:5px;
      height:2px;
      border-radius:99px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
      transform:scaleX(0);
      transform-origin:left;
      transition:transform .24s var(--ease),box-shadow .24s var(--ease);
    }
    .main-nav a:hover,
    .main-nav a.active{
      color:#fff;
      background:rgba(255,255,255,.045);
    }
    .main-nav a:hover::after,
    .main-nav a.active::after{
      transform:scaleX(1);
      box-shadow:0 0 16px rgba(255,61,154,.55);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .menu-toggle{display:none}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 20px;
      border-radius:999px;
      color:#fff;
      font-weight:700;
      letter-spacing:.01em;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
      outline:none;
      white-space:nowrap;
    }
    .btn:focus-visible,
    .main-nav a:focus-visible,
    .footer-link:focus-visible,
    .text-link:focus-visible{
      outline:3px solid rgba(255,61,154,.38);
      outline-offset:3px;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 14px 34px rgba(255,61,154,.22);
    }
    .btn-primary:hover{transform:translateY(-3px);box-shadow:var(--glow)}
    .btn-secondary{
      border:1px solid var(--line-strong);
      background:rgba(255,255,255,.035);
      color:var(--text);
    }
    .btn-secondary:hover{
      transform:translateY(-3px);
      border-color:rgba(255,61,154,.55);
      background:rgba(255,61,154,.08);
    }
    .btn-ghost{
      min-height:40px;
      padding:0 16px;
      border:1px solid rgba(255,255,255,.12);
      background:rgba(255,255,255,.035);
      color:var(--soft);
      font-size:13px;
    }
    .btn-ghost:hover{border-color:rgba(246,193,217,.38);color:#fff;background:rgba(255,255,255,.07)}
    .section{
      padding:112px 0;
      position:relative;
    }
    .section-tight{padding:82px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      color:var(--primary-2);
      font-weight:800;
      font-size:13px;
      letter-spacing:.14em;
      text-transform:uppercase;
    }
    .eyebrow::before{
      content:"";
      width:30px;
      height:1px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
      box-shadow:0 0 16px rgba(255,61,154,.5);
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:32px;
      margin-bottom:44px;
    }
    .section-head h2{
      margin:12px 0 0;
      max-width:760px;
      font-size:clamp(32px,4vw,48px);
      line-height:1.14;
      letter-spacing:-.03em;
    }
    .section-head p{
      margin:0;
      max-width:410px;
      color:var(--muted);
      font-size:17px;
    }

    .hero{
      min-height:calc(90vh - var(--nav-h));
      display:flex;
      align-items:center;
      padding:74px 0 64px;
      overflow:hidden;
    }
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.02fr) minmax(380px,.86fr);
      gap:56px;
      align-items:center;
    }
    .hero-copy{
      animation:riseIn .7s var(--ease) both;
    }
    .hero h1{
      margin:18px 0 22px;
      font-size:clamp(42px,6vw,74px);
      line-height:1.07;
      letter-spacing:-.055em;
      font-weight:850;
    }
    .gradient-text{
      background:linear-gradient(110deg,#fff 0%,#F6C1D9 42%,#A978FF 92%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-subtitle{
      margin:0;
      max-width:680px;
      color:var(--soft);
      font-size:18px;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:14px;
      margin-top:34px;
    }
    .trust-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:28px;
    }
    .badge,.tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.10);
      background:rgba(255,255,255,.045);
      color:var(--soft);
      font-size:13px;
      padding:8px 12px;
    }
    .badge::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 0 12px rgba(255,61,154,.65);
    }
    .hero-art{
      position:relative;
      min-height:560px;
      animation:riseIn .9s .08s var(--ease) both;
    }
    .orb{
      position:absolute;
      border-radius:50%;
      filter:blur(3px);
      opacity:.8;
    }
    .orb-1{
      width:250px;height:250px;right:22px;top:28px;
      background:radial-gradient(circle,rgba(255,61,154,.34),transparent 68%);
    }
    .orb-2{
      width:290px;height:290px;left:10px;bottom:50px;
      background:radial-gradient(circle,rgba(155,92,255,.26),transparent 70%);
    }
    .film-stack{
      position:absolute;
      inset:42px 16px 30px 18px;
      border-radius:34px;
      border:1px solid rgba(255,255,255,.12);
      background:
        linear-gradient(135deg,rgba(255,61,154,.10),rgba(155,92,255,.08)),
        linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
      box-shadow:var(--shadow),var(--glow);
      overflow:hidden;
    }
    .film-stack::before{
      content:"";
      position:absolute;
      inset:22px;
      border:1px solid rgba(255,255,255,.12);
      border-radius:26px;
      background:
        radial-gradient(circle at 58% 24%,rgba(246,193,217,.18),transparent 22%),
        radial-gradient(circle at 50% 58%,rgba(0,0,0,.20),transparent 34%),
        linear-gradient(110deg,rgba(255,61,154,.18),transparent 28%,rgba(155,92,255,.18) 68%,transparent);
    }
    .film-stack::after{
      content:"";
      position:absolute;
      width:160%;
      height:90px;
      left:-35%;
      top:46%;
      transform:rotate(-18deg);
      background:linear-gradient(90deg,transparent,rgba(255,255,255,.16),rgba(255,61,154,.20),transparent);
      animation:lightMove 5.2s ease-in-out infinite;
    }
    .silhouette{
      position:absolute;
      left:50%;
      bottom:68px;
      width:178px;
      height:310px;
      transform:translateX(-50%);
      border-radius:90px 90px 42px 42px;
      background:
        radial-gradient(circle at 50% 18%,rgba(237,231,240,.22) 0 34px,transparent 35px),
        linear-gradient(180deg,rgba(237,231,240,.18),rgba(155,92,255,.09));
      opacity:.66;
      filter:blur(.2px);
      mask-image:linear-gradient(to bottom,#000 0%,#000 78%,transparent 100%);
    }
    .art-card{
      position:absolute;
      right:0;
      bottom:74px;
      width:210px;
      border-radius:24px;
      border:1px solid rgba(255,255,255,.13);
      background:rgba(20,16,27,.72);
      padding:18px;
      box-shadow:0 24px 70px rgba(0,0,0,.42);
      backdrop-filter:blur(12px);
    }
    .art-card strong{display:block;font-size:18px;margin-bottom:8px}
    .art-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .age-note{
      margin-top:24px;
      display:flex;
      gap:14px;
      align-items:flex-start;
      max-width:720px;
      padding:16px 18px;
      border:1px solid rgba(246,193,217,.18);
      border-radius:20px;
      background:rgba(246,193,217,.055);
      color:var(--soft);
      font-size:14px;
    }
    .age-note span{
      flex:0 0 28px;
      height:28px;
      border-radius:50%;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background:rgba(255,61,154,.14);
      color:#fff;
      font-weight:800;
    }

    .pain-wrap{
      border-top:1px solid var(--line);
      border-bottom:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,255,255,.018),rgba(255,255,255,.035));
    }
    .timeline{
      display:grid;
      gap:0;
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      overflow:hidden;
      background:rgba(20,16,27,.55);
    }
    .timeline-item{
      display:grid;
      grid-template-columns:160px 1fr;
      gap:26px;
      padding:30px 34px;
      border-bottom:1px solid var(--line);
      transition:background .22s var(--ease);
    }
    .timeline-item:last-child{border-bottom:0}
    .timeline-item:hover{background:rgba(255,61,154,.045)}
    .timeline-num{
      color:var(--primary);
      font-size:14px;
      font-weight:900;
      letter-spacing:.18em;
    }
    .timeline-item h3{
      margin:0 0 8px;
      font-size:24px;
      line-height:1.25;
    }
    .timeline-item p{margin:0;color:var(--muted);font-size:16px}

    .solution-grid{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:42px;
      align-items:center;
    }
    .solution-copy{
      padding:34px;
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 0 0,rgba(255,61,154,.12),transparent 34%),
        rgba(20,16,27,.58);
      border:1px solid var(--line);
    }
    .solution-copy h2{
      margin:14px 0 18px;
      font-size:clamp(32px,4vw,48px);
      line-height:1.14;
      letter-spacing:-.035em;
    }
    .solution-copy p{color:var(--muted);margin:0 0 26px}
    .panel-stack{
      position:relative;
      min-height:420px;
    }
    .solution-panel{
      position:absolute;
      width:78%;
      min-height:150px;
      border-radius:28px;
      padding:26px;
      border:1px solid rgba(255,255,255,.12);
      background:linear-gradient(145deg,rgba(27,20,36,.96),rgba(15,11,22,.92));
      box-shadow:0 24px 70px rgba(0,0,0,.36);
      transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
    }
    .solution-panel:hover{
      transform:translateY(-6px);
      border-color:rgba(255,61,154,.42);
      box-shadow:var(--glow);
    }
    .solution-panel:nth-child(1){left:0;top:0}
    .solution-panel:nth-child(2){right:0;top:120px}
    .solution-panel:nth-child(3){left:9%;bottom:0}
    .solution-panel h3{margin:0 0 10px;font-size:23px}
    .solution-panel p{margin:0;color:var(--muted)}
    .panel-meta{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      margin-bottom:16px;
      color:var(--primary-2);
      font-size:12px;
      letter-spacing:.12em;
    }

    .metrics{
      background:
        radial-gradient(circle at 80% 0,rgba(155,92,255,.18),transparent 38%),
        linear-gradient(180deg,#0B0810,#09070D);
    }
    .metric-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
    }
    .metric-card{
      padding:34px;
      min-height:250px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:rgba(255,255,255,.035);
      position:relative;
      overflow:hidden;
      transition:transform .24s var(--ease),border-color .24s var(--ease);
    }
    .metric-card::after{
      content:"";
      position:absolute;
      inset:auto -20% -45% -20%;
      height:150px;
      background:radial-gradient(circle,rgba(255,61,154,.17),transparent 70%);
    }
    .metric-card:hover{
      transform:translateY(-5px);
      border-color:rgba(155,92,255,.45);
    }
    .metric-number{
      display:block;
      font-size:clamp(48px,6vw,72px);
      line-height:1;
      font-weight:850;
      letter-spacing:-.06em;
      color:transparent;
      -webkit-text-stroke:1px rgba(255,255,255,.72);
      text-shadow:0 0 24px rgba(255,61,154,.22);
    }
    .metric-card h3{margin:22px 0 10px;font-size:24px}
    .metric-card p{margin:0;color:var(--muted)}

    .topics-track{
      display:grid;
      grid-template-columns:1.25fr .75fr .75fr;
      gap:18px;
    }
    .topic-card{
      position:relative;
      min-height:320px;
      padding:26px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:linear-gradient(145deg,rgba(27,20,36,.88),rgba(12,9,17,.92));
      overflow:hidden;
      box-shadow:0 18px 60px rgba(0,0,0,.25);
      transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
    }
    .topic-card:hover{
      transform:translateY(-6px);
      border-color:rgba(255,61,154,.42);
      box-shadow:var(--glow);
    }
    .topic-card.large{grid-row:span 2;min-height:520px}
    .topic-cover{
      position:absolute;
      inset:0;
      opacity:.72;
      background:
        radial-gradient(circle at 72% 18%,rgba(255,61,154,.34),transparent 30%),
        radial-gradient(circle at 28% 80%,rgba(155,92,255,.28),transparent 34%),
        linear-gradient(135deg,rgba(255,255,255,.05),transparent 55%);
      transition:transform .7s var(--ease);
    }
    .topic-card:hover .topic-cover{transform:scale(1.06) translateX(8px)}
    .topic-card::after{
      content:"";
      position:absolute;
      inset:18px;
      border:1px solid rgba(255,255,255,.10);
      border-radius:24px;
      pointer-events:none;
    }
    .topic-body{
      position:relative;
      z-index:1;
      height:100%;
      display:flex;
      flex-direction:column;
      justify-content:flex-end;
      padding-top:120px;
    }
    .topic-tags{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:16px;
    }
    .tag{
      border-color:rgba(255,61,154,.18);
      background:rgba(255,61,154,.09);
      color:#F6C1D9;
      padding:6px 10px;
      font-size:12px;
    }
    .topic-card h3{margin:0 0 10px;font-size:clamp(24px,3vw,34px);line-height:1.16}
    .topic-card p{margin:0 0 18px;color:var(--soft)}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:#fff;
      font-weight:800;
    }
    .text-link span{transition:transform .2s var(--ease)}
    .text-link:hover{color:var(--primary-2)}
    .text-link:hover span{transform:translateX(5px)}

    .voice-layout{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:26px;
      align-items:start;
    }
    .quote-feature{
      position:sticky;
      top:110px;
      padding:34px;
      border-radius:var(--radius-xl);
      border:1px solid var(--line);
      background:
        radial-gradient(circle at 100% 0,rgba(255,61,154,.13),transparent 36%),
        rgba(20,16,27,.68);
    }
    .quote-feature h2{
      margin:12px 0 16px;
      font-size:clamp(32px,4vw,46px);
      line-height:1.16;
    }
    .quote-feature p{margin:0;color:var(--muted)}
    .quotes{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .quote-card{
      padding:26px;
      border-radius:24px;
      border:1px solid var(--line);
      background:rgba(255,255,255,.035);
      transition:transform .22s var(--ease),border-color .22s var(--ease);
    }
    .quote-card:hover{transform:translateY(-5px);border-color:rgba(246,193,217,.28)}
    .quote-card p{margin:0 0 18px;color:var(--soft)}
    .quote-user{
      display:flex;
      align-items:center;
      gap:12px;
      color:var(--muted);
      font-size:14px;
    }
    .avatar{
      width:38px;
      height:38px;
      border-radius:50%;
      background:linear-gradient(135deg,var(--primary),var(--accent));
      box-shadow:0 0 20px rgba(155,92,255,.25);
    }

    .process-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:14px;
    }
    .process-step{
      padding:24px;
      border-radius:24px;
      border:1px solid var(--line);
      background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.018));
      min-height:230px;
    }
    .process-step b{
      color:var(--primary);
      font-size:13px;
      letter-spacing:.16em;
    }
    .process-step h3{margin:18px 0 10px;font-size:22px}
    .process-step p{margin:0;color:var(--muted);font-size:15px}

    .faq-wrap{
      display:grid;
      grid-template-columns:.72fr 1.28fr;
      gap:34px;
      align-items:start;
    }
    .faq-intro{
      padding:34px;
      border-radius:var(--radius-xl);
      background:rgba(255,255,255,.035);
      border:1px solid var(--line);
    }
    .faq-intro h2{
      margin:12px 0 16px;
      font-size:clamp(32px,4vw,44px);
      line-height:1.16;
    }
    .faq-intro p{margin:0;color:var(--muted)}
    .faq-list{
      display:grid;
      gap:14px;
    }
    details{
      border:1px solid var(--line);
      border-radius:22px;
      background:rgba(20,16,27,.72);
      overflow:hidden;
      transition:border-color .2s var(--ease),background .2s var(--ease);
    }
    details:hover,details[open]{
      border-color:rgba(255,61,154,.32);
      background:rgba(27,20,36,.82);
    }
    summary{
      list-style:none;
      cursor:pointer;
      padding:22px 24px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      font-weight:800;
      color:#fff;
    }
    summary::-webkit-details-marker{display:none}
    summary::after{
      content:"+";
      width:28px;
      height:28px;
      flex:0 0 28px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:50%;
      background:rgba(255,255,255,.06);
      color:var(--primary-2);
      transition:transform .2s var(--ease);
    }
    details[open] summary::after{transform:rotate(45deg)}
    details p{
      margin:0;
      padding:0 24px 24px;
      color:var(--muted);
    }

    .cta-band{
      padding:48px;
      border-radius:36px;
      border:1px solid rgba(255,255,255,.14);
      background:
        radial-gradient(circle at 18% 12%,rgba(255,61,154,.26),transparent 34%),
        radial-gradient(circle at 86% 70%,rgba(155,92,255,.25),transparent 34%),
        linear-gradient(135deg,rgba(27,20,36,.95),rgba(12,9,17,.98));
      box-shadow:var(--shadow);
      display:grid;
      grid-template-columns:1fr auto;
      gap:34px;
      align-items:center;
      overflow:hidden;
      position:relative;
    }
    .cta-band::after{
      content:"";
      position:absolute;
      width:420px;
      height:120px;
      right:-120px;
      top:18px;
      transform:rotate(-18deg);
      background:linear-gradient(90deg,transparent,rgba(255,255,255,.12),transparent);
    }
    .cta-band h2{
      margin:0 0 12px;
      font-size:clamp(32px,4vw,50px);
      line-height:1.12;
      letter-spacing:-.035em;
    }
    .cta-band p{margin:0;color:var(--soft);max-width:720px}
    .cta-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      position:relative;
      z-index:1;
    }

    .site-footer{
      border-top:1px solid var(--line);
      background:#07050A;
      padding:58px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr .85fr;
      gap:34px;
      margin-bottom:36px;
    }
    .footer-brand h2{
      margin:16px 0 14px;
      font-size:24px;
      line-height:1.28;
    }
    .footer-brand p,.footer-note{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .footer-col h3{
      margin:0 0 16px;
      font-size:16px;
      color:#fff;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-link{
      color:var(--muted);
      font-size:14px;
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-link:hover{color:var(--primary-2);transform:translateX(4px)}
    .footer-bottom{
      padding-top:24px;
      border-top:1px solid var(--line);
      display:flex;
      justify-content:space-between;
      gap:18px;
      color:rgba(237,231,240,.62);
      font-size:13px;
    }

    @keyframes riseIn{
      from{opacity:0;transform:translateY(22px)}
      to{opacity:1;transform:translateY(0)}
    }
    @keyframes lightMove{
      0%,100%{transform:translateX(-8%) rotate(-18deg);opacity:.35}
      50%{transform:translateX(18%) rotate(-18deg);opacity:.72}
    }

    @media (prefers-reduced-motion:reduce){
      *,*::before,*::after{
        animation-duration:.001ms!important;
        animation-iteration-count:1!important;
        scroll-behavior:auto!important;
        transition-duration:.001ms!important;
      }
    }

    @media (max-width:1080px){
      .brand-text strong{max-width:230px}
      .hero-grid,.solution-grid,.voice-layout,.faq-wrap{
        grid-template-columns:1fr;
      }
      .hero-art{min-height:480px}
      .quote-feature{position:relative;top:auto}
      .process-grid{grid-template-columns:repeat(2,1fr)}
      .topics-track{grid-template-columns:1fr 1fr}
      .topic-card.large{grid-row:auto;grid-column:1/-1;min-height:420px}
      .metric-grid{grid-template-columns:1fr}
      .section-head{align-items:start;flex-direction:column}
    }

    @media (max-width:860px){
      :root{--nav-h:72px}
      .container{width:min(100% - 28px,var(--container))}
      .site-header{height:auto}
      .nav-wrap{
        min-height:var(--nav-h);
        flex-wrap:wrap;
        gap:12px;
        padding:10px 0;
      }
      .main-nav{
        order:3;
        width:100%;
        justify-content:flex-start;
        overflow-x:auto;
        border-radius:18px;
        padding:8px;
        scrollbar-width:none;
      }
      .main-nav::-webkit-scrollbar{display:none}
      .main-nav a{padding:10px 14px}
      .nav-actions .btn-secondary{display:none}
      .hero{padding-top:52px}
      .hero-grid{gap:34px}
      .timeline-item{grid-template-columns:1fr;gap:10px;padding:26px}
      .solution-panel{
        position:relative;
        width:100%;
        inset:auto!important;
        margin-bottom:14px;
      }
      .panel-stack{min-height:auto}
      .topics-track,.quotes{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .cta-band{grid-template-columns:1fr;padding:34px}
      .footer-bottom{flex-direction:column}
    }

    @media (max-width:520px){
      .brand-mark{width:36px;height:36px;flex-basis:36px}
      .brand-text strong{max-width:190px;font-size:14px}
      .brand-text span{font-size:10px}
      .nav-actions .btn-primary{min-height:40px;padding:0 14px;font-size:13px}
      .hero h1{font-size:38px}
      .hero-subtitle{font-size:16px}
      .hero-actions,.cta-actions{flex-direction:column}
      .btn{width:100%}
      .hero-art{min-height:360px}
      .film-stack{inset:18px 0}
      .art-card{display:none}
      .section{padding:76px 0}
      .section-tight{padding:62px 0}
      .metric-card,.solution-copy,.quote-feature,.faq-intro{padding:26px}
      .process-grid{grid-template-columns:1fr}
      .topic-card,.topic-card.large{min-height:340px}
      summary{padding:20px}
      details p{padding:0 20px 20px}
    }

/* roulang page: category1 */
:root{
      --bg:#09070D;
      --bg-2:#0B080F;
      --surface:#14101B;
      --surface-2:#1B1424;
      --surface-3:#21172D;
      --text:#EDE7F0;
      --muted:#AFA3B8;
      --soft:#F6C1D9;
      --primary:#FF3D9A;
      --secondary:#9B5CFF;
      --border:rgba(255,255,255,.10);
      --border-strong:rgba(255,255,255,.18);
      --glow-pink:rgba(255,61,154,.28);
      --glow-purple:rgba(155,92,255,.22);
      --shadow:0 24px 70px rgba(0,0,0,.42);
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:18px;
      --radius-sm:12px;
      --container:1180px;
      --header-h:78px;
      --ease:cubic-bezier(.22,.61,.36,1);
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      min-height:100vh;
      font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 8%,rgba(255,61,154,.12),transparent 30%),
        radial-gradient(circle at 85% 20%,rgba(155,92,255,.16),transparent 34%),
        linear-gradient(180deg,var(--bg),var(--bg-2) 48%,#07050B);
      line-height:1.75;
      overflow-x:hidden;
    }
    body::before{
      content:"";
      position:fixed;
      inset:0;
      pointer-events:none;
      z-index:-1;
      opacity:.28;
      background-image:
        linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),
        linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
      background-size:48px 48px;
      mask-image:linear-gradient(to bottom,black,transparent 80%);
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{border:0;cursor:pointer}
    img{max-width:100%;display:block}
    ::selection{background:rgba(255,61,154,.35);color:#fff}
    :focus-visible{outline:2px solid var(--primary);outline-offset:4px;border-radius:12px}

    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(9,7,13,.88);
      border-bottom:1px solid var(--border);
      backdrop-filter:blur(18px);
      box-shadow:0 12px 40px rgba(0,0,0,.28);
    }
    .nav-wrap{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:50%;
      position:relative;
      background:
        radial-gradient(circle at 35% 35%,#fff 0 3px,transparent 4px),
        conic-gradient(from 210deg,var(--primary),var(--secondary),transparent 68%,var(--primary));
      box-shadow:0 0 28px var(--glow-pink);
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      inset:8px;
      border-radius:50%;
      background:var(--bg);
      border:1px solid rgba(255,255,255,.18);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.12}
    .brand-text strong{font-size:15px;letter-spacing:.02em;color:#fff;font-weight:800}
    .brand-text span{font-size:11px;color:var(--muted);letter-spacing:.18em;text-transform:uppercase;margin-top:4px}
    .main-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:4px;
      padding:8px;
      border:1px solid var(--border);
      border-radius:999px;
      background:rgba(255,255,255,.035);
    }
    .main-nav a{
      position:relative;
      padding:9px 16px;
      border-radius:999px;
      color:var(--muted);
      font-size:14px;
      font-weight:600;
      transition:color .22s var(--ease),background .22s var(--ease);
      white-space:nowrap;
    }
    .main-nav a::after{
      content:"";
      position:absolute;
      left:18px;
      right:18px;
      bottom:5px;
      height:2px;
      border-radius:999px;
      background:linear-gradient(90deg,var(--primary),var(--secondary));
      opacity:0;
      transform:scaleX(.3);
      transition:.22s var(--ease);
      box-shadow:0 0 14px var(--glow-pink);
    }
    .main-nav a:hover{color:#fff;background:rgba(255,255,255,.055)}
    .main-nav a.active{color:#fff;background:rgba(255,61,154,.08)}
    .main-nav a.active::after{opacity:1;transform:scaleX(1)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:0 18px;
      border-radius:999px;
      font-weight:700;
      font-size:14px;
      transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 14px 34px var(--glow-pink),inset 0 1px 0 rgba(255,255,255,.28);
    }
    .btn-primary:hover{box-shadow:0 18px 48px rgba(255,61,154,.38),0 0 24px rgba(155,92,255,.22)}
    .btn-secondary{
      color:var(--text);
      background:rgba(255,255,255,.045);
      border:1px solid var(--border);
    }
    .btn-secondary:hover{border-color:rgba(255,61,154,.45);background:rgba(255,61,154,.08)}
    .btn-text{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--soft);
      font-weight:700;
      transition:color .2s var(--ease),gap .2s var(--ease);
    }
    .btn-text:hover{color:#fff;gap:12px}

    .page-hero{
      position:relative;
      padding:82px 0 70px;
      overflow:hidden;
    }
    .page-hero::before{
      content:"";
      position:absolute;
      width:680px;
      height:680px;
      right:-220px;
      top:-220px;
      border-radius:50%;
      background:radial-gradient(circle,rgba(255,61,154,.18),rgba(155,92,255,.10) 36%,transparent 67%);
      filter:blur(4px);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--muted);
      font-size:13px;
      margin-bottom:28px;
    }
    .breadcrumb a{transition:color .2s var(--ease)}
    .breadcrumb a:hover{color:var(--soft)}
    .breadcrumb span:last-child{color:#fff}
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);
      gap:56px;
      align-items:center;
      position:relative;
      z-index:1;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 13px;
      border:1px solid rgba(255,61,154,.24);
      border-radius:999px;
      background:rgba(255,61,154,.07);
      color:var(--soft);
      font-size:13px;
      font-weight:700;
      letter-spacing:.08em;
      margin-bottom:22px;
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 14px var(--primary);
    }
    h1{
      font-size:clamp(38px,6vw,70px);
      line-height:1.08;
      letter-spacing:-.04em;
      font-weight:800;
      max-width:780px;
    }
    .gradient-text{
      background:linear-gradient(120deg,#fff 0%,var(--soft) 38%,var(--primary) 74%,var(--secondary) 100%);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-lead{
      margin-top:24px;
      max-width:680px;
      font-size:18px;
      color:var(--muted);
      line-height:1.9;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
    .trust-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:30px;
    }
    .badge,.tag{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:999px;
      border:1px solid var(--border);
      background:rgba(255,255,255,.045);
      color:var(--muted);
      font-size:13px;
      font-weight:650;
    }
    .badge{padding:8px 12px}
    .tag{padding:7px 11px;color:var(--soft);background:rgba(255,61,154,.08);border-color:rgba(255,61,154,.18)}
    .hero-device{
      position:relative;
      min-height:500px;
      border-radius:var(--radius-xl);
      border:1px solid var(--border);
      background:
        linear-gradient(145deg,rgba(255,255,255,.08),rgba(255,255,255,.025)),
        radial-gradient(circle at 25% 18%,rgba(255,61,154,.22),transparent 32%),
        radial-gradient(circle at 82% 70%,rgba(155,92,255,.25),transparent 35%),
        var(--surface);
      box-shadow:var(--shadow),0 0 44px rgba(155,92,255,.12);
      overflow:hidden;
      padding:26px;
    }
    .hero-device::before{
      content:"";
      position:absolute;
      inset:-40%;
      background:linear-gradient(115deg,transparent 35%,rgba(255,255,255,.14) 45%,transparent 56%);
      transform:rotate(10deg);
      animation:lightSweep 7s infinite;
    }
    .visual-frame{
      position:relative;
      height:100%;
      min-height:440px;
      border-radius:26px;
      border:1px solid rgba(255,255,255,.14);
      background:
        linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px) 0 0/34px 34px,
        linear-gradient(180deg,rgba(255,61,154,.18),rgba(155,92,255,.12)),
        #100B17;
      overflow:hidden;
    }
    .silhouette{
      position:absolute;
      width:230px;
      height:355px;
      right:42px;
      bottom:0;
      border-radius:120px 120px 26px 26px;
      background:
        radial-gradient(circle at 50% 18%,rgba(246,193,217,.28),transparent 16%),
        linear-gradient(180deg,rgba(255,255,255,.16),rgba(255,61,154,.08) 45%,rgba(0,0,0,.24));
      filter:blur(.2px);
      opacity:.72;
      clip-path:polygon(31% 0,69% 0,78% 26%,92% 52%,82% 100%,17% 100%,8% 52%,22% 26%);
    }
    .cover-panel{
      position:absolute;
      left:28px;
      top:30px;
      width:220px;
      padding:18px;
      border-radius:22px;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(9,7,13,.62);
      backdrop-filter:blur(8px);
      box-shadow:0 18px 44px rgba(0,0,0,.28);
    }
    .cover-line{height:9px;border-radius:999px;background:rgba(255,255,255,.14);margin-bottom:10px}
    .cover-line:nth-child(1){width:70%;background:linear-gradient(90deg,var(--primary),var(--secondary))}
    .cover-line:nth-child(2){width:90%}
    .cover-line:nth-child(3){width:52%}
    .orbit{
      position:absolute;
      border-radius:999px;
      border:1px solid rgba(255,255,255,.18);
      box-shadow:0 0 26px var(--glow-purple);
    }
    .orbit.one{width:170px;height:170px;left:52px;bottom:64px}
    .orbit.two{width:96px;height:96px;right:36px;top:46px;border-color:rgba(255,61,154,.28)}
    @keyframes lightSweep{
      0%,48%{transform:translateX(-20%) rotate(10deg);opacity:0}
      58%{opacity:1}
      78%,100%{transform:translateX(42%) rotate(10deg);opacity:0}
    }

    main{position:relative}
    .section{padding:92px 0}
    .section-tight{padding:70px 0}
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:30px;
      margin-bottom:36px;
    }
    .section-kicker{
      color:var(--soft);
      font-weight:800;
      font-size:13px;
      letter-spacing:.16em;
      margin-bottom:10px;
    }
    h2{
      font-size:clamp(30px,4vw,48px);
      line-height:1.16;
      letter-spacing:-.03em;
      font-weight:800;
    }
    .section-desc{
      max-width:540px;
      color:var(--muted);
      font-size:16px;
      line-height:1.85;
    }

    .guide-layout{
      display:grid;
      grid-template-columns:280px minmax(0,1fr);
      gap:24px;
      align-items:start;
    }
    .filter-card{
      position:sticky;
      top:calc(var(--header-h) + 22px);
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.025));
      padding:24px;
      box-shadow:0 18px 48px rgba(0,0,0,.22);
    }
    .filter-card h3{font-size:22px;line-height:1.25;margin-bottom:10px}
    .filter-card p{color:var(--muted);font-size:14px;line-height:1.8;margin-bottom:20px}
    .filter-tags{display:flex;flex-wrap:wrap;gap:10px}
    .filter-tags .tag{cursor:default}
    .age-note{
      margin-top:22px;
      padding:16px;
      border-radius:18px;
      background:rgba(255,61,154,.07);
      border:1px solid rgba(255,61,154,.18);
      color:var(--soft);
      font-size:13px;
      line-height:1.7;
    }
    .content-track{
      display:grid;
      gap:18px;
    }
    .featured-card{
      display:grid;
      grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
      gap:26px;
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      background:
        radial-gradient(circle at 18% 10%,rgba(255,61,154,.13),transparent 36%),
        linear-gradient(145deg,rgba(255,255,255,.06),rgba(255,255,255,.025)),
        var(--surface);
      padding:24px;
      overflow:hidden;
      box-shadow:var(--shadow);
      transition:transform .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
    }
    .featured-card:hover{
      transform:translateY(-4px);
      border-color:rgba(255,61,154,.34);
      box-shadow:0 28px 76px rgba(0,0,0,.44),0 0 36px rgba(255,61,154,.12);
    }
    .abstract-cover{
      position:relative;
      min-height:330px;
      border-radius:24px;
      overflow:hidden;
      border:1px solid rgba(255,255,255,.14);
      background:
        radial-gradient(circle at 34% 22%,rgba(246,193,217,.35),transparent 13%),
        radial-gradient(circle at 72% 78%,rgba(155,92,255,.45),transparent 26%),
        linear-gradient(135deg,rgba(255,61,154,.42),rgba(20,16,27,.2) 38%,rgba(155,92,255,.32)),
        #120D19;
    }
    .abstract-cover::before{
      content:"";
      position:absolute;
      inset:24px;
      border:1px solid rgba(255,255,255,.20);
      border-radius:20px;
      background:linear-gradient(120deg,transparent,rgba(255,255,255,.06),transparent);
    }
    .abstract-cover::after{
      content:"";
      position:absolute;
      width:180px;
      height:280px;
      right:38px;
      bottom:-12px;
      border-radius:90px 90px 24px 24px;
      background:linear-gradient(180deg,rgba(237,231,240,.22),rgba(255,61,154,.09),rgba(0,0,0,.28));
      clip-path:polygon(38% 0,62% 0,74% 24%,88% 56%,74% 100%,24% 100%,12% 56%,26% 24%);
      opacity:.72;
    }
    .featured-body{display:flex;flex-direction:column;justify-content:center;padding:8px 6px}
    .meta-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
    .featured-body h3{font-size:clamp(26px,3vw,38px);line-height:1.18;letter-spacing:-.025em;margin-bottom:18px}
    .featured-body p{color:var(--muted);font-size:16px;line-height:1.9;margin-bottom:22px}
    .update-text{color:rgba(246,193,217,.78);font-size:13px;margin-top:18px}

    .mini-list{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
    }
    .mini-card{
      display:grid;
      grid-template-columns:112px minmax(0,1fr);
      gap:16px;
      padding:18px;
      border-radius:var(--radius-lg);
      border:1px solid var(--border);
      background:rgba(255,255,255,.035);
      transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
    }
    .mini-card:hover{
      transform:translateY(-3px);
      border-color:rgba(155,92,255,.34);
      background:rgba(255,255,255,.055);
    }
    .mini-cover{
      min-height:112px;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.12);
      background:
        linear-gradient(135deg,rgba(255,61,154,.28),transparent 48%),
        radial-gradient(circle at 72% 28%,rgba(155,92,255,.38),transparent 32%),
        #15101D;
      position:relative;
      overflow:hidden;
    }
    .mini-cover::after{
      content:"";
      position:absolute;
      inset:18px 22px 0;
      border-radius:50px 50px 12px 12px;
      background:linear-gradient(180deg,rgba(255,255,255,.18),rgba(255,255,255,.02));
      opacity:.44;
    }
    .mini-card h3{font-size:18px;line-height:1.32;margin-bottom:8px}
    .mini-card p{
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      overflow:hidden;
      margin-bottom:12px;
    }
    .mini-meta{font-size:12px;color:rgba(246,193,217,.78)}

    .editorial{
      display:grid;
      grid-template-columns:.85fr 1.15fr;
      gap:26px;
      align-items:stretch;
    }
    .editorial-panel{
      border:1px solid var(--border);
      border-radius:var(--radius-xl);
      background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.026));
      padding:34px;
      box-shadow:0 20px 58px rgba(0,0,0,.25);
    }
    .editorial-panel h2{margin-bottom:18px}
    .editorial-panel p{color:var(--muted);font-size:16px;line-height:1.9}
    .standards{
      display:grid;
      gap:14px;
    }
    .standard-item{
      display:grid;
      grid-template-columns:64px minmax(0,1fr);
      gap:18px;
      padding:22px;
      border:1px solid var(--border);
      border-radius:var(--radius-lg);
      background:rgba(255,255,255,.035);
      transition:transform .22s var(--ease),border-color .22s var(--ease);
    }
    .standard-item:hover{transform:translateX(4px);border-color:rgba(255,61,154,.28)}
    .standard-no{
      font-size:28px;
      font-weight:800;
      line-height:1;
      color:transparent;
      -webkit-text-stroke:1px rgba(255,61,154,.74);
    }
    .standard-item h3{font-size:21px;margin-bottom:6px}
    .standard-item p{color:var(--muted);font-size:15px;line-height:1.75}

    .topic-rail{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:20px;
    }
    .rail-card{
      min-height:230px;
      padding:28px;
      border-radius:var(--radius-xl);
      border:1px solid var(--border);
      background:
        radial-gradient(circle at 78% 20%,rgba(255,61,154,.18),transparent 30%),
        linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.024)),
        var(--surface);
      position:relative;
      overflow:hidden;
      transition:transform .22s var(--ease),border-color .22s var(--ease);
    }
    .rail-card:hover{transform:translateY(-4px);border-color:rgba(255,61,154,.32)}
    .rail-card::after{
      content:"";
      position:absolute;
      width:180px;height:180px;right:-50px;bottom:-60px;border-radius:50%;
      border:1px solid rgba(255,255,255,.16);
      box-shadow:0 0 35px var(--glow-purple);
    }
    .rail-card h3{font-size:26px;line-height:1.2;margin:18px 0 12px}
    .rail-card p{color:var(--muted);max-width:520px;line-height:1.85}
    .rail-stack{display:grid;gap:20px}

    .notice-strip{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:20px;
      align-items:center;
      padding:24px;
      border:1px solid rgba(255,61,154,.20);
      border-radius:var(--radius-xl);
      background:
        linear-gradient(135deg,rgba(255,61,154,.10),rgba(155,92,255,.075)),
        rgba(255,255,255,.03);
    }
    .notice-icon{
      width:54px;height:54px;border-radius:18px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--secondary));
      box-shadow:0 18px 38px var(--glow-pink);
      font-weight:800;
    }
    .notice-strip h2{font-size:26px;margin-bottom:4px}
    .notice-strip p{color:var(--muted);line-height:1.75}

    .faq-wrap{display:grid;gap:14px;max-width:920px;margin:0 auto}
    details.faq-item{
      border:1px solid var(--border);
      border-radius:20px;
      background:rgba(255,255,255,.035);
      overflow:hidden;
      transition:border-color .22s var(--ease),background .22s var(--ease);
    }
    details.faq-item:hover{border-color:rgba(255,61,154,.28);background:rgba(255,255,255,.048)}
    details.faq-item[open]{border-color:rgba(255,61,154,.36)}
    .faq-item summary{
      list-style:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      padding:22px 24px;
      cursor:pointer;
      font-weight:800;
      color:#fff;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{
      content:"+";
      width:28px;height:28px;border-radius:50%;
      display:grid;place-items:center;
      color:var(--soft);
      border:1px solid var(--border);
      transition:transform .2s var(--ease),background .2s var(--ease);
      flex:0 0 auto;
    }
    .faq-item[open] summary::after{content:"—";background:rgba(255,61,154,.12);transform:rotate(180deg)}
    .faq-item p{padding:0 24px 22px;color:var(--muted);line-height:1.85}

    .cta-band{
      position:relative;
      overflow:hidden;
      border-radius:36px;
      border:1px solid var(--border);
      background:
        radial-gradient(circle at 20% 10%,rgba(255,61,154,.20),transparent 34%),
        radial-gradient(circle at 80% 70%,rgba(155,92,255,.20),transparent 36%),
        linear-gradient(135deg,rgba(255,255,255,.07),rgba(255,255,255,.025)),
        var(--surface);
      padding:48px;
      box-shadow:var(--shadow);
    }
    .cta-band::before{
      content:"";
      position:absolute;
      inset:18px;
      border-radius:28px;
      border:1px solid rgba(255,255,255,.08);
      pointer-events:none;
    }
    .cta-content{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center}
    .cta-content h2{max-width:760px;margin-bottom:14px}
    .cta-content p{color:var(--muted);max-width:700px}
    .cta-actions{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}

    .site-footer{
      border-top:1px solid var(--border);
      background:linear-gradient(180deg,rgba(20,16,27,.72),rgba(7,5,11,.96));
      padding:70px 0 28px;
      margin-top:40px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.25fr .55fr .8fr;
      gap:44px;
      align-items:start;
    }
    .footer-brand h2{
      font-size:28px;
      line-height:1.25;
      margin:22px 0 12px;
      max-width:560px;
    }
    .footer-brand p,.footer-note{color:var(--muted);font-size:14px;line-height:1.85}
    .footer-col h3{font-size:16px;margin-bottom:16px;color:#fff}
    .footer-links{display:grid;gap:10px}
    .footer-link{
      color:var(--muted);
      font-size:14px;
      transition:color .2s var(--ease),transform .2s var(--ease);
    }
    .footer-link:hover{color:var(--soft);transform:translateX(4px)}
    .footer-bottom{
      margin-top:46px;
      padding-top:22px;
      border-top:1px solid var(--border);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      color:rgba(175,163,184,.78);
      font-size:13px;
    }

    @media (prefers-reduced-motion: reduce){
      *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    }
    @media (max-width:1024px){
      :root{--header-h:72px}
      .nav-wrap{flex-wrap:wrap;padding:14px 0;gap:14px}
      .main-nav{order:3;width:100%;justify-content:flex-start;overflow-x:auto;border-radius:18px}
      .main-nav a{padding:9px 14px}
      .hero-grid,.guide-layout,.editorial,.topic-rail{grid-template-columns:1fr}
      .hero-device{min-height:420px}
      .filter-card{position:relative;top:auto}
      .filter-tags{max-width:100%}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .cta-content{grid-template-columns:1fr}
      .cta-actions{justify-content:flex-start}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .nav-actions .btn-secondary{display:none}
      .brand-text strong{font-size:13px}
      .brand-mark{width:38px;height:38px}
      .page-hero{padding:56px 0 52px}
      .hero-actions .btn{width:100%}
      .section{padding:68px 0}
      .section-tight{padding:54px 0}
      .section-head{display:block}
      .section-desc{margin-top:14px}
      .featured-card{grid-template-columns:1fr;padding:18px}
      .abstract-cover{min-height:260px}
      .mini-list{grid-template-columns:1fr}
      .notice-strip{grid-template-columns:1fr}
      .notice-strip .btn{width:100%}
      .footer-grid{grid-template-columns:1fr;gap:30px}
      .footer-bottom{flex-direction:column;align-items:flex-start}
      .cta-band{padding:30px}
      .cta-actions .btn{width:100%}
    }
    @media (max-width:520px){
      body{line-height:1.7}
      .nav-wrap{align-items:flex-start}
      .brand{max-width:calc(100% - 0px)}
      .brand-text strong{max-width:220px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
      .nav-actions{width:100%}
      .nav-actions .btn-primary{width:100%}
      .main-nav{gap:2px;padding:6px}
      h1{font-size:36px}
      .hero-lead{font-size:16px}
      .hero-device{min-height:360px;padding:16px;border-radius:24px}
      .visual-frame{min-height:320px}
      .cover-panel{width:180px;left:18px}
      .silhouette{right:12px;width:180px;height:280px}
      .mini-card{grid-template-columns:1fr}
      .mini-cover{min-height:150px}
      .standard-item{grid-template-columns:1fr}
      .footer-brand h2{font-size:23px}
    }

/* roulang page: category2 */
:root {
      --bg: #09070D;
      --bg-soft: #0B080F;
      --panel: #14101B;
      --panel-2: #1B1424;
      --panel-3: #21182D;
      --text: #EDE7F0;
      --muted: #AFA3B8;
      --muted-2: #7F728C;
      --line: rgba(255,255,255,0.10);
      --line-strong: rgba(255,255,255,0.18);
      --primary: #FF3D9A;
      --secondary: #9B5CFF;
      --highlight: #F6C1D9;
      --success: #83F3D3;
      --warning: #FFD48A;
      --shadow-pink: rgba(255,61,154,0.28);
      --shadow-purple: rgba(155,92,255,0.22);
      --radius-lg: 28px;
      --radius-md: 20px;
      --radius-sm: 14px;
      --container: 1180px;
      --ease: cubic-bezier(.22,.61,.36,1);
      --font: PingFang SC, Microsoft YaHei, Noto Sans SC, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      background: var(--bg);
    }

    body {
      min-height: 100vh;
      font-family: var(--font);
      color: var(--text);
      line-height: 1.8;
      background:
        radial-gradient(circle at 12% 8%, rgba(255,61,154,0.18), transparent 30%),
        radial-gradient(circle at 82% 12%, rgba(155,92,255,0.18), transparent 34%),
        linear-gradient(180deg, #09070D 0%, #0B080F 42%, #09070D 100%);
      overflow-x: hidden;
    }

    body::before {
      content: "";
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: -1;
      opacity: .42;
      background-image:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
      background-size: 64px 64px;
      mask-image: radial-gradient(circle at center, #000 0%, transparent 78%);
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color 220ms var(--ease), border-color 220ms var(--ease), transform 220ms var(--ease), opacity 220ms var(--ease);
    }

    button,
    input {
      font: inherit;
    }

    button {
      border: 0;
      cursor: pointer;
    }

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

    ::selection {
      background: rgba(255,61,154,.36);
      color: #fff;
    }

    .container {
      width: min(calc(100% - 40px), var(--container));
      margin-inline: auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      min-height: 78px;
      display: flex;
      align-items: center;
      background: rgba(9,7,13,0.88);
      border-bottom: 1px solid rgba(255,255,255,.08);
      backdrop-filter: blur(18px);
      box-shadow: 0 18px 48px rgba(0,0,0,.24);
    }

    .nav-wrap {
      min-height: 78px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      width: 42px;
      height: 42px;
      position: relative;
      flex: 0 0 auto;
      border-radius: 50%;
      background:
        radial-gradient(circle at 50% 50%, rgba(255,61,154,.86) 0 13%, transparent 14%),
        conic-gradient(from 120deg, var(--primary), transparent 34%, var(--secondary), transparent 72%, var(--primary));
      box-shadow: 0 0 26px rgba(255,61,154,.36), inset 0 0 18px rgba(255,255,255,.12);
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 8px;
      border-radius: 50%;
      background: var(--bg);
      box-shadow: inset 0 0 18px rgba(155,92,255,.25);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      right: 6px;
      top: 8px;
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: var(--highlight);
      box-shadow: 0 0 16px rgba(246,193,217,.62);
    }

    .brand-text {
      display: grid;
      line-height: 1.25;
    }

    .brand-text strong {
      max-width: 270px;
      color: #fff;
      font-size: 15px;
      font-weight: 800;
      letter-spacing: .02em;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .brand-text span {
      color: var(--muted);
      font-size: 12px;
      letter-spacing: .12em;
      text-transform: uppercase;
    }

    .main-nav {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
      padding: 6px;
      border: 1px solid rgba(255,255,255,.07);
      border-radius: 999px;
      background: rgba(255,255,255,.035);
    }

    .main-nav a {
      position: relative;
      padding: 9px 15px;
      color: rgba(237,231,240,.78);
      font-size: 14px;
      border-radius: 999px;
      white-space: nowrap;
    }

    .main-nav a::after {
      content: "";
      position: absolute;
      left: 18px;
      right: 18px;
      bottom: 3px;
      height: 2px;
      border-radius: 99px;
      transform: scaleX(0);
      transform-origin: center;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      box-shadow: 0 0 16px var(--shadow-pink);
      transition: transform 220ms var(--ease);
    }

    .main-nav a:hover,
    .main-nav a.active {
      color: #fff;
      background: rgba(255,255,255,.055);
    }

    .main-nav a:hover::after,
    .main-nav a.active::after {
      transform: scaleX(1);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 0 0 auto;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      min-height: 42px;
      padding: 11px 18px;
      border-radius: 999px;
      font-weight: 700;
      font-size: 14px;
      line-height: 1.2;
      border: 1px solid transparent;
      transition: transform 220ms var(--ease), box-shadow 220ms var(--ease), background 220ms var(--ease), border-color 220ms var(--ease), color 220ms var(--ease);
      white-space: nowrap;
    }

    .btn-primary {
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 14px 32px rgba(255,61,154,.24), 0 0 0 1px rgba(255,255,255,.08) inset;
    }

    .btn-secondary {
      color: var(--text);
      background: rgba(255,255,255,.045);
      border-color: rgba(255,255,255,.12);
    }

    .btn-ghost {
      color: #fff;
      background: rgba(255,255,255,.06);
      border-color: rgba(255,255,255,.14);
    }

    .btn:hover {
      transform: translateY(-2px);
    }

    .btn-primary:hover {
      box-shadow: 0 18px 42px rgba(255,61,154,.34), 0 0 24px rgba(155,92,255,.24);
    }

    .btn-secondary:hover,
    .btn-ghost:hover {
      border-color: rgba(255,61,154,.54);
      background: rgba(255,61,154,.10);
      color: #fff;
    }

    .btn:focus-visible,
    .main-nav a:focus-visible,
    .footer-link:focus-visible,
    .brand:focus-visible,
    .chapter-link:focus-visible {
      outline: 3px solid rgba(255,61,154,.42);
      outline-offset: 4px;
    }

    main {
      overflow: hidden;
    }

    .section {
      padding: 104px 0;
      position: relative;
    }

    .section-tight {
      padding: 76px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      color: var(--highlight);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .16em;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      width: 34px;
      height: 1px;
      background: linear-gradient(90deg, var(--primary), transparent);
      box-shadow: 0 0 12px var(--shadow-pink);
    }

    .hero {
      min-height: 760px;
      display: flex;
      align-items: center;
      padding: 82px 0 108px;
      position: relative;
    }

    .hero::after {
      content: "";
      position: absolute;
      inset: auto -10% 0 -10%;
      height: 210px;
      background: linear-gradient(180deg, transparent, rgba(9,7,13,.98));
      pointer-events: none;
    }

    .hero-grid {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 1.04fr) minmax(360px, .76fr);
      align-items: center;
      gap: 72px;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 9px;
      margin: 0 0 24px;
      color: var(--muted);
      font-size: 14px;
    }

    .breadcrumb a {
      color: rgba(237,231,240,.78);
    }

    .breadcrumb a:hover {
      color: var(--primary);
    }

    .breadcrumb span {
      color: var(--muted-2);
    }

    h1 {
      margin-top: 16px;
      max-width: 820px;
      font-size: clamp(40px, 6vw, 74px);
      line-height: 1.08;
      letter-spacing: -0.05em;
      font-weight: 850;
    }

    .gradient-text {
      background: linear-gradient(110deg, #fff 0%, #F6C1D9 36%, #FF3D9A 62%, #9B5CFF 100%);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
      text-shadow: 0 0 30px rgba(255,61,154,.10);
    }

    .hero-lead {
      max-width: 720px;
      margin-top: 26px;
      color: rgba(237,231,240,.78);
      font-size: 18px;
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 14px;
      margin-top: 36px;
    }

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

    .badge,
    .tag {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.10);
      background: rgba(255,255,255,.045);
      color: rgba(237,231,240,.82);
      font-size: 13px;
      line-height: 1;
      white-space: nowrap;
    }

    .badge {
      padding: 10px 13px;
    }

    .badge::before {
      content: "";
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 0 12px rgba(255,61,154,.62);
    }

    .tag {
      padding: 8px 11px;
      color: var(--highlight);
      background: rgba(255,61,154,.09);
      border-color: rgba(255,61,154,.18);
    }

    .visual-stage {
      position: relative;
      min-height: 560px;
      border-radius: 36px;
      border: 1px solid rgba(255,255,255,.10);
      background:
        linear-gradient(145deg, rgba(255,61,154,.10), transparent 36%),
        radial-gradient(circle at 68% 22%, rgba(155,92,255,.30), transparent 34%),
        linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
      box-shadow: 0 30px 80px rgba(0,0,0,.38), inset 0 0 0 1px rgba(255,255,255,.04);
      overflow: hidden;
    }

    .visual-stage::before {
      content: "";
      position: absolute;
      inset: 22px;
      border-radius: 28px;
      border: 1px solid rgba(255,255,255,.10);
      background:
        linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px);
      background-size: 46px 46px;
      opacity: .6;
    }

    .visual-stage::after {
      content: "";
      position: absolute;
      width: 460px;
      height: 460px;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -46%);
      border-radius: 46% 54% 52% 48%;
      background:
        radial-gradient(circle at 50% 24%, rgba(246,193,217,.18), transparent 20%),
        linear-gradient(145deg, rgba(255,61,154,.34), rgba(155,92,255,.22) 48%, rgba(0,0,0,.18));
      filter: blur(.2px);
      opacity: .72;
      clip-path: polygon(50% 4%, 71% 14%, 82% 36%, 79% 68%, 62% 92%, 39% 92%, 21% 67%, 18% 35%, 29% 14%);
    }

    .float-card {
      position: absolute;
      z-index: 2;
      width: 220px;
      padding: 18px;
      border-radius: 22px;
      background: rgba(20,16,27,.78);
      border: 1px solid rgba(255,255,255,.13);
      box-shadow: 0 22px 54px rgba(0,0,0,.32);
      backdrop-filter: blur(12px);
    }

    .float-card.one {
      left: 28px;
      top: 52px;
    }

    .float-card.two {
      right: 28px;
      bottom: 48px;
    }

    .float-card.three {
      left: 68px;
      bottom: 82px;
      width: 178px;
    }

    .float-card .mini-title {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      color: #fff;
      font-size: 14px;
      font-weight: 800;
    }

    .float-card p {
      margin-top: 10px;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.65;
    }

    .meter {
      margin-top: 14px;
      height: 7px;
      border-radius: 99px;
      background: rgba(255,255,255,.08);
      overflow: hidden;
    }

    .meter span {
      display: block;
      width: 72%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      box-shadow: 0 0 16px var(--shadow-pink);
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, .8fr) minmax(280px, .52fr);
      gap: 36px;
      align-items: end;
      margin-bottom: 46px;
    }

    .section-title {
      margin-top: 12px;
      font-size: clamp(32px, 4.2vw, 52px);
      line-height: 1.14;
      letter-spacing: -0.04em;
      font-weight: 850;
    }

    .section-desc {
      color: var(--muted);
      font-size: 17px;
      line-height: 1.9;
    }

    .chapters {
      display: grid;
      gap: 24px;
    }

    .chapter {
      display: grid;
      grid-template-columns: 160px minmax(0, 1fr);
      gap: 28px;
      padding: 34px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background:
        linear-gradient(135deg, rgba(255,255,255,.065), rgba(255,255,255,.025)),
        radial-gradient(circle at 95% 20%, rgba(155,92,255,.14), transparent 32%);
      box-shadow: 0 26px 70px rgba(0,0,0,.24);
      transition: transform 240ms var(--ease), border-color 240ms var(--ease), box-shadow 240ms var(--ease);
    }

    .chapter:hover {
      transform: translateY(-4px);
      border-color: rgba(255,61,154,.34);
      box-shadow: 0 30px 80px rgba(0,0,0,.32), 0 0 32px rgba(255,61,154,.09);
    }

    .chapter-num {
      font-size: clamp(54px, 8vw, 92px);
      line-height: .9;
      font-weight: 900;
      letter-spacing: -0.08em;
      color: transparent;
      -webkit-text-stroke: 1px rgba(246,193,217,.52);
      text-shadow: 0 0 26px rgba(255,61,154,.14);
    }

    .chapter h2 {
      font-size: clamp(24px, 3vw, 34px);
      line-height: 1.25;
      letter-spacing: -0.03em;
    }

    .chapter p {
      margin-top: 14px;
      color: var(--muted);
      font-size: 16px;
      max-width: 780px;
    }

    .chapter-tags {
      margin-top: 20px;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .chapter-link {
      margin-top: 22px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--highlight);
      font-weight: 800;
      font-size: 14px;
    }

    .chapter-link span {
      transition: transform 220ms var(--ease);
    }

    .chapter-link:hover {
      color: var(--primary);
    }

    .chapter-link:hover span {
      transform: translateX(4px);
    }

    .compare-wrap {
      padding: 1px;
      border-radius: 32px;
      background: linear-gradient(135deg, rgba(255,61,154,.38), rgba(155,92,255,.28), rgba(255,255,255,.08));
      box-shadow: 0 28px 80px rgba(0,0,0,.34);
    }

    .compare {
      display: grid;
      grid-template-columns: 1fr 1fr;
      overflow: hidden;
      border-radius: 31px;
      background: rgba(11,8,15,.92);
      border: 1px solid rgba(255,255,255,.06);
    }

    .compare-col {
      padding: 38px;
      position: relative;
      min-height: 420px;
    }

    .compare-col + .compare-col {
      border-left: 1px solid rgba(255,255,255,.10);
    }

    .compare-col.featured {
      background:
        radial-gradient(circle at 80% 14%, rgba(255,61,154,.16), transparent 30%),
        linear-gradient(180deg, rgba(155,92,255,.10), transparent);
    }

    .compare-kicker {
      color: var(--muted-2);
      font-size: 13px;
      font-weight: 800;
      letter-spacing: .14em;
    }

    .compare-col.featured .compare-kicker {
      color: var(--highlight);
    }

    .compare h2 {
      margin-top: 12px;
      font-size: clamp(26px, 3vw, 38px);
      line-height: 1.16;
      letter-spacing: -0.04em;
    }

    .compare-list {
      list-style: none;
      margin-top: 28px;
      display: grid;
      gap: 16px;
    }

    .compare-list li {
      display: grid;
      grid-template-columns: 26px minmax(0, 1fr);
      gap: 12px;
      color: var(--muted);
    }

    .compare-list li::before {
      content: "—";
      width: 26px;
      height: 26px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 50%;
      color: var(--muted-2);
      background: rgba(255,255,255,.06);
      line-height: 1;
    }

    .compare-col.featured .compare-list li {
      color: rgba(237,231,240,.86);
    }

    .compare-col.featured .compare-list li::before {
      content: "✓";
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      box-shadow: 0 0 16px rgba(255,61,154,.28);
    }

    .entry-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 24px;
      align-items: stretch;
    }

    .entry-card {
      position: relative;
      min-height: 280px;
      padding: 32px;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background:
        linear-gradient(145deg, rgba(255,255,255,.07), rgba(255,255,255,.025)),
        radial-gradient(circle at 16% 18%, rgba(255,61,154,.14), transparent 32%);
      overflow: hidden;
      transition: transform 240ms var(--ease), border-color 240ms var(--ease), box-shadow 240ms var(--ease);
    }

    .entry-card:hover {
      transform: translateY(-4px);
      border-color: rgba(255,61,154,.32);
      box-shadow: 0 26px 70px rgba(0,0,0,.28);
    }

    .entry-card::after {
      content: "";
      position: absolute;
      right: -90px;
      top: -80px;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(155,92,255,.32), transparent 62%);
      transition: transform 260ms var(--ease);
    }

    .entry-card:hover::after {
      transform: translate(-16px, 14px) scale(1.08);
    }

    .entry-card.large {
      min-height: 384px;
      display: flex;
      flex-direction: column;
      justify-content: flex-end;
      background:
        linear-gradient(180deg, transparent, rgba(9,7,13,.74)),
        linear-gradient(135deg, rgba(255,61,154,.20), transparent 42%),
        radial-gradient(circle at 72% 30%, rgba(155,92,255,.32), transparent 34%),
        linear-gradient(120deg, #17101f, #0f0a17);
    }

    .entry-stack {
      display: grid;
      gap: 24px;
    }

    .entry-card h3 {
      position: relative;
      z-index: 1;
      font-size: 26px;
      line-height: 1.25;
      letter-spacing: -0.03em;
    }

    .entry-card p {
      position: relative;
      z-index: 1;
      margin-top: 12px;
      color: var(--muted);
      max-width: 560px;
    }

    .entry-card .chapter-tags {
      position: relative;
      z-index: 1;
    }

    .insight-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: rgba(255,255,255,.04);
      overflow: hidden;
    }

    .insight {
      padding: 26px;
      min-height: 154px;
    }

    .insight + .insight {
      border-left: 1px solid rgba(255,255,255,.09);
    }

    .insight strong {
      display: block;
      color: #fff;
      font-size: 32px;
      line-height: 1;
      letter-spacing: -0.05em;
      background: linear-gradient(135deg, #fff, var(--highlight), var(--secondary));
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
    }

    .insight span {
      display: block;
      margin-top: 12px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    .faq-grid {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 34px;
      align-items: start;
    }

    .faq-intro {
      position: sticky;
      top: 112px;
      padding: 32px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255,61,154,.18);
      background:
        radial-gradient(circle at 14% 12%, rgba(255,61,154,.18), transparent 32%),
        rgba(255,255,255,.045);
    }

    .faq-intro h2 {
      margin-top: 12px;
      font-size: clamp(28px, 3.5vw, 42px);
      line-height: 1.18;
      letter-spacing: -0.04em;
    }

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

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

    details {
      border-radius: 20px;
      border: 1px solid var(--line);
      background: rgba(255,255,255,.045);
      overflow: hidden;
      transition: border-color 220ms var(--ease), background 220ms var(--ease);
    }

    details:hover,
    details[open] {
      border-color: rgba(255,61,154,.28);
      background: rgba(255,255,255,.06);
    }

    summary {
      list-style: none;
      cursor: pointer;
      padding: 22px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 18px;
      color: #fff;
      font-weight: 800;
      line-height: 1.5;
    }

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

    summary::after {
      content: "+";
      width: 30px;
      height: 30px;
      flex: 0 0 auto;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--highlight);
      background: rgba(255,61,154,.10);
      border: 1px solid rgba(255,61,154,.18);
      transition: transform 220ms var(--ease);
    }

    details[open] summary::after {
      transform: rotate(45deg);
    }

    details p {
      padding: 0 24px 24px;
      color: var(--muted);
      line-height: 1.85;
    }

    .age-panel {
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
      padding: 30px;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255,212,138,.24);
      background:
        radial-gradient(circle at 12% 10%, rgba(255,212,138,.12), transparent 28%),
        linear-gradient(135deg, rgba(255,255,255,.06), rgba(255,255,255,.025));
    }

    .age-panel h2 {
      font-size: clamp(24px, 3vw, 34px);
      line-height: 1.22;
      letter-spacing: -0.03em;
    }

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

    .cta {
      padding: 1px;
      border-radius: 36px;
      background: linear-gradient(135deg, rgba(255,61,154,.48), rgba(155,92,255,.38), rgba(246,193,217,.14));
      box-shadow: 0 36px 90px rgba(0,0,0,.40), 0 0 60px rgba(255,61,154,.10);
    }

    .cta-inner {
      position: relative;
      overflow: hidden;
      border-radius: 35px;
      padding: 56px;
      background:
        radial-gradient(circle at 78% 28%, rgba(255,61,154,.20), transparent 30%),
        radial-gradient(circle at 16% 72%, rgba(155,92,255,.18), transparent 34%),
        rgba(12,9,16,.96);
    }

    .cta-inner::after {
      content: "";
      position: absolute;
      right: -60px;
      bottom: -110px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      border: 1px solid rgba(255,255,255,.10);
      box-shadow: inset 0 0 40px rgba(255,61,154,.12), 0 0 70px rgba(155,92,255,.14);
    }

    .cta-content {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, .82fr) auto;
      gap: 28px;
      align-items: center;
    }

    .cta h2 {
      max-width: 760px;
      font-size: clamp(30px, 4.6vw, 54px);
      line-height: 1.12;
      letter-spacing: -0.05em;
    }

    .cta p {
      max-width: 720px;
      margin-top: 16px;
      color: var(--muted);
      font-size: 17px;
    }

    .cta-actions {
      display: flex;
      flex-direction: column;
      gap: 12px;
      align-items: stretch;
    }

    .site-footer {
      padding: 80px 0 34px;
      border-top: 1px solid rgba(255,255,255,.08);
      background:
        linear-gradient(180deg, rgba(20,16,27,.28), rgba(9,7,13,.96)),
        radial-gradient(circle at 84% 10%, rgba(155,92,255,.12), transparent 30%);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) .48fr .72fr;
      gap: 48px;
      align-items: start;
    }

    .footer-brand h2 {
      margin-top: 28px;
      max-width: 520px;
      font-size: 28px;
      line-height: 1.25;
      letter-spacing: -0.03em;
    }

    .footer-brand p,
    .footer-note {
      margin-top: 14px;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.85;
    }

    .footer-col h3 {
      color: #fff;
      font-size: 15px;
      margin-bottom: 18px;
    }

    .footer-links {
      display: grid;
      gap: 12px;
    }

    .footer-link {
      color: var(--muted);
      font-size: 14px;
    }

    .footer-link:hover {
      color: var(--primary);
      transform: translateX(4px);
    }

    .footer-bottom {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      margin-top: 56px;
      padding-top: 24px;
      border-top: 1px solid rgba(255,255,255,.08);
      color: var(--muted-2);
      font-size: 13px;
    }

    .fade-up {
      animation: fadeUp 760ms var(--ease) both;
    }

    .delay-1 { animation-delay: 90ms; }
    .delay-2 { animation-delay: 180ms; }

    @keyframes fadeUp {
      from {
        opacity: 0;
        transform: translateY(18px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

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

    @media (max-width: 1080px) {
      .nav-wrap {
        flex-wrap: wrap;
        padding: 12px 0;
      }

      .site-header {
        position: relative;
      }

      .main-nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        border-radius: 18px;
        scrollbar-width: none;
      }

      .main-nav::-webkit-scrollbar {
        display: none;
      }

      .hero-grid,
      .section-head,
      .faq-grid,
      .cta-content {
        grid-template-columns: 1fr;
      }

      .hero {
        min-height: auto;
        padding-top: 70px;
      }

      .visual-stage {
        min-height: 470px;
      }

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

      .insight-strip {
        grid-template-columns: repeat(2, 1fr);
      }

      .insight:nth-child(3) {
        border-left: 0;
        border-top: 1px solid rgba(255,255,255,.09);
      }

      .insight:nth-child(4) {
        border-top: 1px solid rgba(255,255,255,.09);
      }

      .faq-intro {
        position: static;
      }

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

      .footer-brand {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(calc(100% - 28px), var(--container));
      }

      .nav-actions .btn-secondary {
        display: none;
      }

      .brand-text strong {
        max-width: 210px;
        font-size: 14px;
      }

      .section {
        padding: 76px 0;
      }

      .section-tight {
        padding: 58px 0;
      }

      .hero {
        padding: 54px 0 78px;
      }

      .hero-grid {
        gap: 42px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .hero-actions .btn {
        width: 100%;
      }

      .visual-stage {
        min-height: 390px;
        border-radius: 28px;
      }

      .float-card {
        width: 190px;
        padding: 15px;
      }

      .float-card.one {
        left: 16px;
        top: 26px;
      }

      .float-card.two {
        right: 16px;
        bottom: 28px;
      }

      .float-card.three {
        display: none;
      }

      .chapter {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 26px;
      }

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

      .compare-col + .compare-col {
        border-left: 0;
        border-top: 1px solid rgba(255,255,255,.10);
      }

      .compare-col {
        padding: 28px;
        min-height: auto;
      }

      .entry-card {
        padding: 26px;
        min-height: 260px;
      }

      .age-panel {
        grid-template-columns: 1fr;
      }

      .cta-inner {
        padding: 34px 26px;
      }

      .cta-actions {
        width: 100%;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 34px;
      }

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

    @media (max-width: 520px) {
      .nav-wrap {
        gap: 12px;
      }

      .brand-mark {
        width: 38px;
        height: 38px;
      }

      .brand-text strong {
        max-width: 176px;
      }

      .nav-actions .btn-primary {
        padding-inline: 13px;
        min-height: 38px;
      }

      .main-nav a {
        padding: 8px 12px;
        font-size: 13px;
      }

      h1 {
        font-size: 38px;
      }

      .section-title {
        font-size: 31px;
      }

      .breadcrumb {
        font-size: 13px;
      }

      .hero-note {
        gap: 8px;
      }

      .badge,
      .tag {
        font-size: 12px;
      }

      .visual-stage::after {
        width: 330px;
        height: 330px;
      }

      .float-card {
        width: 168px;
      }

      .insight-strip {
        grid-template-columns: 1fr;
      }

      .insight + .insight,
      .insight:nth-child(3),
      .insight:nth-child(4) {
        border-left: 0;
        border-top: 1px solid rgba(255,255,255,.09);
      }

      summary {
        padding: 19px 18px;
      }

      details p {
        padding: 0 18px 20px;
      }
    }