*{box-sizing:border-box;margin:0;padding:0}
  :root{
    --ink:#101828;
    --ink-2:#344054;
    --ink-3:#667085;
    --line:#e4e7ec;
    --paper:#ffffff;
    --paper-2:#f7f9fc;
    --c1:#4f46e5;
    --c2:#06b6d4;
    --c3:#ec4899;
    --c4:#f59e0b;
    --grad:linear-gradient(120deg,#4f46e5 0%,#7c3aed 42%,#06b6d4 100%);
    --grad-soft:linear-gradient(120deg,rgba(79,70,229,.10),rgba(6,182,212,.10));
    --shadow-sm:0 2px 8px rgba(16,24,40,.06);
    --shadow-md:0 12px 32px -12px rgba(16,24,40,.18);
    --shadow-lg:0 24px 60px -20px rgba(59,48,163,.35);
    --r-s:10px;--r-m:16px;--r-l:24px;
  }
  html{scroll-behavior:smooth}
  body{
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
    color:var(--ink);
    background:#f6f7fb;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto}
  a{color:inherit;text-decoration:none}
  ul{list-style:none}
  button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

  /* ---------- Nav ---------- */
  .site-header{
    position:sticky;top:0;z-index:90;
    background:rgba(255,255,255,.86);
    backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(228,231,236,.9);
  }
  .nav-wrap{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:68px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .brand .ai-page-logo{max-width:38px;height:38px;object-fit:contain;border-radius:9px}
  .brand-txt{display:flex;flex-direction:column;line-height:1.15}
  .brand-txt strong{font-size:17px;letter-spacing:.5px}
  .brand-txt span{font-size:11px;color:var(--ink-3);letter-spacing:1.6px}
  .nav-links{
    display:flex;align-items:center;gap:0;flex:1;justify-content:center;
    flex-wrap:nowrap;overflow:hidden;
  }
  .nav-links a{
    font-size:14px;color:var(--ink-2);padding:8px 11px;border-radius:8px;
    white-space:nowrap;transition:color .2s,background .2s;
  }
  .nav-links a:hover{color:var(--c1);background:#eef0ff}
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:11px 22px;border-radius:999px;font-size:14px;font-weight:600;
    transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s;
    white-space:nowrap;
  }
  .btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px -10px rgba(79,70,229,.85)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -12px rgba(79,70,229,.95)}
  .btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
  .btn-ghost:hover{transform:translateY(-2px);border-color:#c7cbf7;color:var(--c1);box-shadow:var(--shadow-md)}
  .btn-line{background:transparent;color:var(--c1);border:1px solid #c9cdf7}
  .btn-line:hover{background:#eef0ff;transform:translateY(-2px)}
  .menu-toggle{
    display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
    background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  }
  .menu-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
  .menu-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .menu-toggle.active span:nth-child(2){opacity:0}
  .menu-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;
    background:
      radial-gradient(1000px 520px at 82% -12%,rgba(6,182,212,.30),transparent 62%),
      radial-gradient(820px 480px at 8% 0%,rgba(124,58,237,.26),transparent 60%),
      radial-gradient(700px 460px at 52% 118%,rgba(236,72,153,.16),transparent 66%),
      linear-gradient(160deg,#f4f5ff 0%,#eef3ff 38%,#f7f9fc 100%);
    padding:74px 0 84px;
    border-bottom:1px solid #e9ecfb;
  }
  .hero::before,.hero::after{
    content:"";position:absolute;border-radius:50%;pointer-events:none;filter:blur(4px);
  }
  .hero::before{width:340px;height:340px;top:-120px;right:6%;background:radial-gradient(circle,rgba(79,70,229,.28),transparent 70%);animation:float 11s ease-in-out infinite}
  .hero::after{width:260px;height:260px;bottom:-110px;left:2%;background:radial-gradient(circle,rgba(6,182,212,.26),transparent 70%);animation:float 13s ease-in-out infinite reverse}
  @keyframes float{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(0,-22px,0)}}
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.08fr .92fr;gap:52px;align-items:start}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.4px;
    background:rgba(255,255,255,.78);border:1px solid #dcdffb;color:#4338ca;
    box-shadow:var(--shadow-sm);
  }
  .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--c2);box-shadow:0 0 0 4px rgba(6,182,212,.18)}
  .hero h1{
    font-size:clamp(29px,3.6vw,46px);line-height:1.24;letter-spacing:-.5px;
    margin:20px 0 16px;font-weight:800;color:#0d1330;
  }
  .hero h1 em{
    font-style:normal;
    background:linear-gradient(96deg,#4f46e5,#7c3aed 50%,#0891b2);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-lead{font-size:16px;color:var(--ink-2);max-width:540px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px}
  .hero-tags span{
    font-size:12.5px;padding:5px 12px;border-radius:999px;color:#475467;
    background:rgba(255,255,255,.8);border:1px solid #e3e7f5;
  }
  .hero-panel{
    background:rgba(255,255,255,.82);border:1px solid #e2e6fa;border-radius:var(--r-l);
    padding:24px;box-shadow:var(--shadow-lg);backdrop-filter:blur(8px);
    animation:rise .8s cubic-bezier(.22,.9,.32,1) both;
  }
  .hero-panel h2{font-size:15px;font-weight:700;color:#1d2939;letter-spacing:.3px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
  .hero-panel h2::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--grad)}
  .panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .panel-item{
    background:linear-gradient(150deg,#fff,#f8f9ff);border:1px solid #eaedfa;border-radius:var(--r-s);
    padding:14px 14px;transition:transform .25s ease,box-shadow .25s ease,border-color .25s;
  }
  .panel-item:hover{transform:translateY(-3px);box-shadow:0 14px 26px -16px rgba(79,70,229,.6);border-color:#cdd3f8}
  .panel-item b{display:block;font-size:19px;font-weight:800;color:#312e81;letter-spacing:-.3px}
  .panel-item span{font-size:12.5px;color:var(--ink-3)}
  .panel-foot{margin-top:16px;font-size:12.5px;color:#475467;display:flex;align-items:center;gap:8px}
  .panel-foot::before{content:"◆";color:var(--c2);font-size:10px}
  @keyframes rise{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}

  /* ---------- Section shell ---------- */
  section{position:relative}
  .sec{padding:76px 0}
  .sec-alt{background:linear-gradient(180deg,#ffffff 0%,#f7f9fc 100%)}
  .sec-tint{background:linear-gradient(180deg,#f3f5ff 0%,#f8fafd 55%,#f6f7fb 100%)}
  .sec-head{max-width:760px;margin-bottom:40px}
  .sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .sec-kicker{
    display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:2px;
    color:#4338ca;text-transform:uppercase;margin-bottom:10px;
  }
  .sec-kicker::after{content:"";display:block;width:40px;height:3px;border-radius:3px;background:var(--grad);margin-top:8px}
  .sec-head.center .sec-kicker::after{margin-left:auto;margin-right:auto}
  h2.sec-title{font-size:clamp(23px,2.5vw,32px);line-height:1.32;font-weight:800;letter-spacing:-.4px;color:#0d1330}
  .sec-desc{margin-top:14px;font-size:15px;color:var(--ink-3)}

  /* reveal */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.22,.9,.32,1),transform .7s cubic-bezier(.22,.9,.32,1)}
  .reveal.in{opacity:1;transform:none}

  /* ---------- About ---------- */
  .about-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:start}
  .about-intro p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
  .about-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
  .about-point{
    display:flex;gap:10px;align-items:flex-start;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-s);padding:13px 14px;transition:border-color .22s,transform .22s,box-shadow .22s;
  }
  .about-point:hover{border-color:#c9cdf7;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
  .about-point .dot{
    flex-shrink:0;width:22px;height:22px;border-radius:7px;background:var(--grad-soft);
    color:#4338ca;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px;
  }
  .about-point b{font-size:13.5px;display:block;color:#1d2939}
  .about-point span{font-size:12.5px;color:var(--ink-3)}
  .about-card{
    background:linear-gradient(160deg,#111a3e 0%,#221a52 46%,#0e2a4d 100%);
    border-radius:var(--r-l);padding:30px;color:#e9ecff;box-shadow:var(--shadow-lg);
    position:relative;overflow:hidden;
  }
  .about-card::after{
    content:"";position:absolute;width:240px;height:240px;border-radius:50%;
    right:-90px;top:-90px;background:radial-gradient(circle,rgba(6,182,212,.55),transparent 68%);
  }
  .about-card h3{font-size:17px;margin-bottom:8px;position:relative;z-index:2}
  .about-card p{font-size:13.5px;color:#c3c9ec;position:relative;z-index:2}
  .about-card ul{margin-top:20px;display:grid;gap:12px;position:relative;z-index:2}
  .about-card li{display:flex;gap:10px;font-size:13.5px;color:#dfe3ff}
  .about-card li::before{
    content:"✓";flex-shrink:0;width:20px;height:20px;border-radius:50%;font-size:11px;
    display:flex;align-items:center;justify-content:center;
    background:rgba(6,182,212,.22);color:#7ee7f5;margin-top:2px;
  }

  /* ---------- Metrics ---------- */
  .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:8px}
  .metric{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:22px 20px;
    position:relative;overflow:hidden;transition:transform .25s,box-shadow .25s,border-color .25s;
  }
  .metric::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad);opacity:.9}
  .metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cdd3f8}
  .metric b{font-size:26px;font-weight:800;letter-spacing:-.6px;color:#1d2939;display:block}
  .metric span{font-size:13px;color:var(--ink-3);display:block;margin-top:4px}

  /* ---------- Service cards ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .svc-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:24px 22px;
    display:flex;flex-direction:column;gap:10px;
    transition:transform .26s cubic-bezier(.22,.9,.32,1),box-shadow .26s,border-color .26s;
    position:relative;overflow:hidden;
  }
  .svc-card::after{
    content:"";position:absolute;left:0;top:0;height:100%;width:3px;background:var(--grad);
    transform:scaleY(0);transform-origin:top;transition:transform .3s ease;
  }
  .svc-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#cfd5f9}
  .svc-card:hover::after{transform:scaleY(1)}
  .svc-ico{
    width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    font-size:18px;font-weight:800;color:#fff;background:var(--grad);box-shadow:0 8px 18px -10px rgba(79,70,229,.9);
  }
  .svc-card h3{font-size:16px;font-weight:700;color:#101828}
  .svc-card p{font-size:13.5px;color:var(--ink-3);flex:1}
  .svc-tag{font-size:12px;color:#4338ca;background:#eef0ff;border-radius:6px;padding:3px 9px;align-self:flex-start}

  /* ---------- One-stop / scence list ---------- */
  .scene-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .scene-item{
    display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);
    padding:16px 18px;transition:border-color .22s,transform .22s,box-shadow .22s;
  }
  .scene-item:hover{border-color:#c9cdf7;transform:translateX(3px);box-shadow:var(--shadow-sm)}
  .scene-num{
    flex-shrink:0;width:30px;height:30px;border-radius:9px;background:var(--grad-soft);
    color:#4338ca;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px;
  }
  .scene-item h3{font-size:14.5px;font-weight:700;color:#101828;margin-bottom:3px}
  .scene-item p{font-size:13px;color:var(--ink-3)}

  /* ---------- Models cloud ---------- */
  .model-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
  .model-cloud span{
    font-size:13px;padding:7px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);
    color:#344054;font-weight:500;transition:.22s;
  }
  .model-cloud span:hover{background:var(--grad);color:#fff;border-color:transparent;transform:translateY(-2px)}

  /* ---------- Process ---------- */
  .process{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .step{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:22px 20px;
    position:relative;transition:transform .25s,box-shadow .25s;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
  .step-n{
    font-size:13px;font-weight:800;letter-spacing:1px;color:#4338ca;background:#eef0ff;
    display:inline-block;padding:3px 10px;border-radius:6px;margin-bottom:12px;
  }
  .step h3{font-size:15px;font-weight:700;margin-bottom:6px}
  .step p{font-size:13px;color:var(--ink-3)}

  /* ---------- Table ---------- */
  .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--shadow-sm)}
  table{width:100%;border-collapse:collapse;min-width:640px;font-size:14px}
  thead th{
    background:linear-gradient(120deg,#eef0ff,#e6f7fb);color:#1d2939;
    text-align:left;padding:14px 18px;font-weight:700;font-size:13.5px;white-space:nowrap;
  }
  tbody td{padding:13px 18px;border-top:1px solid var(--line);color:var(--ink-2);vertical-align:top}
  tbody tr:hover{background:#fafbff}
  .score-pill{
    display:inline-block;padding:3px 12px;border-radius:999px;font-size:13px;font-weight:800;
    background:var(--grad);color:#fff;
  }

  /* review card */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .review{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:22px;
    display:flex;flex-direction:column;gap:12px;transition:transform .25s,box-shadow .25s,border-color .25s;
  }
  .review:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#d6dbf9}
  .review-stars{color:#f59e0b;font-size:13px;letter-spacing:2px}
  .review p{font-size:13.5px;color:var(--ink-2);flex:1}
  .review-user{display:flex;align-items:center;gap:10px;border-top:1px dashed var(--line);padding-top:12px}
  .avatar{
    width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:800;color:#fff;background:var(--grad);flex-shrink:0;
  }
  .review-user b{font-size:13.5px;display:block;color:#101828}
  .review-user span{font-size:12px;color:var(--ink-3)}

  /* ---------- Case ---------- */
  .case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:start}
  .case-main{
    border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:#fff;
    box-shadow:var(--shadow-sm);transition:box-shadow .3s,transform .3s;
  }
  .case-main:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
  .case-main figure img{width:100%;aspect-ratio:16/9;object-fit:cover}
  .case-main .cap{padding:20px 22px}
  .case-main .cap h3{font-size:16.5px;margin-bottom:6px}
  .case-main .cap p{font-size:13.5px;color:var(--ink-3)}
  .case-side{display:grid;gap:14px}
  .case-mini{
    display:grid;grid-template-columns:104px 1fr;gap:14px;align-items:center;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:12px;
    transition:border-color .22s,transform .22s,box-shadow .22s;
  }
  .case-mini:hover{border-color:#c9cdf7;transform:translateY(-2px);box-shadow:var(--shadow-sm)}
  .case-mini figure{border-radius:10px;overflow:hidden;background:#eef1f8}
  .case-mini figure img{width:100%;aspect-ratio:1/1;object-fit:cover}
  .case-mini h3{font-size:14px;margin-bottom:3px}
  .case-mini p{font-size:12.5px;color:var(--ink-3)}

  /* ---------- Articles ---------- */
  .art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .art-card{
    display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:20px;
    transition:transform .25s,box-shadow .25s,border-color .25s;
  }
  .art-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#d6dbf9}
  .art-card .tagline{font-size:12px;color:#4338ca;font-weight:700;letter-spacing:.5px;margin-bottom:8px}
  .art-card h3{font-size:15px;line-height:1.5;margin-bottom:10px;color:#101828}
  .art-card .more{font-size:13px;color:#4f46e5;font-weight:600}

  /* ---------- Form ---------- */
  .form-shell{display:grid;grid-template-columns:.92fr 1.08fr;gap:32px;align-items:start}
  .form-aside{background:linear-gradient(160deg,#141c42,#221a52 52%,#0d2b4f);border-radius:var(--r-l);padding:32px;color:#e9ecff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
  .form-aside::after{content:"";position:absolute;width:220px;height:220px;border-radius:50%;left:-70px;bottom:-80px;background:radial-gradient(circle,rgba(236,72,153,.4),transparent 70%)}
  .form-aside h3{font-size:19px;margin-bottom:10px;position:relative;z-index:2}
  .form-aside p{font-size:13.5px;color:#c3c9ec;position:relative;z-index:2}
  .contact-list{margin-top:22px;display:grid;gap:12px;position:relative;z-index:2}
  .contact-list li{font-size:13.5px;color:#dfe3ff;display:flex;gap:10px;align-items:flex-start;word-break:break-all}
  .contact-list b{color:#7ee7f5;font-weight:600;flex-shrink:0}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:30px;box-shadow:var(--shadow-sm)}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
  .field label{font-size:13px;font-weight:600;color:var(--ink-2)}
  .field input,.field select,.field textarea{
    width:100%;padding:11px 13px;border-radius:var(--r-s);border:1px solid var(--line);
    font-size:14px;color:var(--ink);background:#fcfdff;font-family:inherit;
    transition:border-color .2s,box-shadow .2s,background .2s;
  }
  .field textarea{min-height:104px;resize:vertical}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:#7c83ef;background:#fff;box-shadow:0 0 0 3px rgba(79,70,229,.13);
  }
  .form-card .btn{width:100%;padding:13px;margin-top:4px}
  .form-tip{font-size:12px;color:var(--ink-3);text-align:center;margin-top:10px}
  .form-msg{font-size:13px;margin-top:10px;color:#0f766e;display:none;text-align:center}

  /* token price */
  .price-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .price-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:20px;transition:transform .25s,box-shadow .25s,border-color .25s}
  .price-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cdd3f8}
  .price-card h3{font-size:14px;color:#101828;margin-bottom:8px}
  .price-card .num{font-size:22px;font-weight:800;color:#312e81;letter-spacing:-.5px}
  .price-card .num small{font-size:12px;font-weight:500;color:var(--ink-3);letter-spacing:0}
  .price-card .sub{font-size:12.5px;color:var(--ink-3);margin-top:6px}

  /* network */
  .network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .net-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:18px;transition:transform .25s,box-shadow .25s}
  .net-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
  .net-item b{display:block;font-size:14.5px;color:#101828;margin-bottom:4px}
  .net-item span{font-size:12.5px;color:var(--ink-3)}

  /* faq */
  .faq-list{display:grid;gap:10px;max-width:900px;margin:0 auto}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;transition:border-color .22s,box-shadow .22s}
  .faq-item.open{border-color:#c9cdf7;box-shadow:var(--shadow-sm)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:17px 20px;font-size:14.5px;font-weight:600;color:#101828;text-align:left;
  }
  .faq-q .ico{
    flex-shrink:0;width:22px;height:22px;border-radius:50%;background:#eef0ff;color:#4338ca;
    display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;
    transition:transform .28s ease,background .22s,color .22s;
  }
  .faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--grad);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 20px 18px;font-size:13.5px;color:var(--ink-3);line-height:1.75}

  /* join */
  .join-band{
    background:linear-gradient(120deg,#1b1746 0%,#2a1d63 40%,#0e3350 100%);
    border-radius:var(--r-l);padding:40px;color:#e9ecff;position:relative;overflow:hidden;
    display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;box-shadow:var(--shadow-lg);
  }
  .join-band::before{content:"";position:absolute;width:320px;height:320px;border-radius:50%;right:-110px;top:-120px;background:radial-gradient(circle,rgba(6,182,212,.45),transparent 70%)}
  .join-band h2{font-size:clamp(21px,2.3vw,27px);margin-bottom:12px;position:relative;z-index:2;color:#fff}
  .join-band p{font-size:14px;color:#c9cfef;position:relative;z-index:2}
  .join-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2;justify-content:flex-end}
  .btn-light{background:#fff;color:#2a1d63;font-weight:700}
  .btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 30px -14px rgba(0,0,0,.6)}
  .btn-outline-light{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5)}
  .btn-outline-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}

  /* links */
  .linkrows{display:grid;grid-template-columns:1fr 1fr;gap:22px}
  .linkbox{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:22px}
  .linkbox h3{font-size:14.5px;margin-bottom:14px;color:#101828;display:flex;align-items:center;gap:8px}
  .linkbox h3::before{content:"";width:4px;height:14px;border-radius:3px;background:var(--grad)}
  .link-tags{display:flex;flex-wrap:wrap;gap:9px}
  .link-tags a{
    font-size:13px;padding:6px 13px;border-radius:999px;background:#f7f8fd;border:1px solid var(--line);
    color:#344054;transition:.22s;
  }
  .link-tags a:hover{color:#fff;background:var(--grad);border-color:transparent;transform:translateY(-2px)}

  /* footer */
  .site-footer{
    background:#0f1533;color:#c5cbe8;padding:52px 0 0;position:relative;
  }
  .footer-top{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:26px;padding-bottom:34px}
  .footer-brand .brand{margin-bottom:14px}
  .footer-brand .brand-txt strong{color:#fff}
  .footer-brand .brand-txt span{color:#8890bd}
  .footer-brand p{font-size:13px;color:#9ba3cc;max-width:300px}
  .footer-col h4{font-size:14px;color:#fff;margin-bottom:14px}
  .footer-col ul{display:grid;gap:9px}
  .footer-col a{font-size:13px;color:#9ba3cc;transition:color .2s,transform .2s;display:inline-block}
  .footer-col a:hover{color:#7ee7f5;transform:translateX(2px)}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.1);padding:18px 0 24px;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
    font-size:12.5px;color:#8b93bd;
  }
  .footer-bottom .fb-links{display:flex;flex-wrap:wrap;gap:16px}
  .footer-bottom a{color:#9ba3cc}
  .footer-bottom a:hover{color:#7ee7f5}

  /* float */
  .float-stack{position:fixed;right:18px;bottom:22px;z-index:120;display:flex;flex-direction:column;gap:10px}
  .float-btn{
    width:48px;height:48px;border-radius:14px;background:#fff;border:1px solid var(--line);
    display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);
    font-size:12px;color:#4338ca;font-weight:700;transition:transform .22s,box-shadow .22s,background .22s,color .22s;
  }
  .float-btn:hover{transform:translateY(-3px);background:var(--grad);color:#fff;border-color:transparent}
  .float-btn svg{width:20px;height:20px;fill:currentColor}
  .float-kefu-panel{
    position:fixed;right:18px;bottom:132px;z-index:121;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-m);padding:14px;box-shadow:var(--shadow-lg);width:190px;
    opacity:0;visibility:hidden;transform:translateY(10px);transition:.28s ease;
  }
  .float-kefu-panel.show{opacity:1;visibility:visible;transform:none}
  .float-kefu-panel p{font-size:12px;color:var(--ink-3);text-align:center;margin-bottom:8px}
  .float-kefu-panel img{border-radius:8px;width:100%;object-fit:contain}

  /* responsive */
  @media (max-width:1080px){
    .nav-links a{padding:8px 8px;font-size:13px}
    .hero-inner{gap:34px}
    .metrics{grid-template-columns:1fr 1fr}
    .card-grid{grid-template-columns:1fr 1fr}
    .process{grid-template-columns:1fr 1fr}
    .review-grid{grid-template-columns:1fr 1fr}
    .art-grid{grid-template-columns:1fr 1fr}
    .price-grid{grid-template-columns:1fr 1fr}
    .network-grid{grid-template-columns:1fr 1fr}
    .footer-top{grid-template-columns:1fr 1fr}
  }
  @media (max-width:900px){
    .nav-links{
      position:fixed;top:68px;left:0;right:0;flex-direction:column;align-items:stretch;
      background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 18px;gap:4px;
      max-height:0;overflow:hidden;transition:max-height .32s ease,opacity .24s;opacity:0;
      box-shadow:0 20px 30px -22px rgba(16,24,40,.5);
    }
    .nav-links.open{max-height:74vh;overflow-y:auto;opacity:1}
    .nav-links a{padding:11px 12px;border-radius:8px;font-size:14.5px}
    .menu-toggle{display:flex}
    .nav-actions .btn-ghost{display:none}
    .hero-inner{grid-template-columns:1fr;gap:30px}
    .about-grid,.case-grid,.form-shell,.linkrows{grid-template-columns:1fr}
    .join-band{grid-template-columns:1fr;padding:30px}
    .join-actions{justify-content:flex-start}
    .hero{padding:52px 0 62px}
    .sec{padding:58px 0}
  }
  @media (max-width:680px){
    .card-grid,.review-grid,.art-grid,.scene-wrap,.price-grid,.network-grid,.process,.about-points,.form-row{grid-template-columns:1fr}
    .metrics{grid-template-columns:1fr 1fr}
    .footer-top{grid-template-columns:1fr 1fr}
    .footer-bottom{flex-direction:column;align-items:flex-start}
    .hero-cta .btn{width:100%}
    .brand-txt span{display:none}
    .case-mini{grid-template-columns:88px 1fr}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
    .reveal{opacity:1;transform:none}
  }