:root{
    --yellow:#FFD400;
    --yellow-deep:#F5B700;
    --ink:#141414;
    --ink-soft:#3a3a3a;
    --muted:#6d6d6d;
    --line:#e9e6dd;
    --bg:#fffdf6;
    --card:#ffffff;
    --shadow-sm:0 2px 8px rgba(20,20,20,.06);
    --shadow-md:0 10px 30px rgba(20,20,20,.08);
    --shadow-lg:0 18px 50px rgba(20,20,20,.12);
    --radius:16px;
    --container:1180px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:var(--ink);
    background:
      radial-gradient(1200px 600px at 85% -8%, rgba(255,212,0,.16), transparent 60%),
      radial-gradient(900px 500px at -5% 12%, rgba(255,212,0,.10), transparent 55%),
      var(--bg);
    line-height:1.65;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;height:auto;display:block;}
  ul{-webkit-padding-start:0;padding-inline-start:0;margin:0;list-style:none;}
  h1,h2,h3,h4,p{margin:0;}
  button{font-family:inherit;cursor:pointer;}
  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding-left:20px;
    padding-right:20px;
  }

  /* ===== Nav ===== */
  .site-header{
    position:sticky;top:0;z-index:100;
    background:rgba(255,253,246,.88);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    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{width:auto;max-height:38px;}
  .brand-name{font-size:18px;font-weight:800;letter-spacing:.5px;white-space:nowrap;}
  .nav-links{
    display:flex;align-items:center;gap:0;flex-wrap:wrap;
    flex:1;justify-content:center;
  }
  .nav-links a{
    font-size:14px;color:var(--ink-soft);font-weight:500;
    padding:8px 11px;border-radius:8px;
    transition:color .2s, background .2s;
    white-space:nowrap;
  }
  .nav-links a:hover{color:var(--ink);background:rgba(255,212,0,.22);}
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:7px;
    border-radius:10px;font-weight:700;font-size:14px;
    padding:11px 20px;border:1.6px solid transparent;
    transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
    will-change:transform;
  }
  .btn:active{transform:translateY(1px) scale(.99);}
  .btn-primary{background:var(--yellow);color:var(--ink);box-shadow:0 6px 16px rgba(245,183,0,.35);}
  .btn-primary:hover{background:var(--yellow-deep);transform:translateY(-2px);box-shadow:0 10px 22px rgba(245,183,0,.45);}
  .btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
  .btn-ghost:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
  .btn-dark{background:var(--ink);color:#fff;}
  .btn-dark:hover{background:#000;transform:translateY(-2px);box-shadow:var(--shadow-md);}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:10px;
    background:#fff;border:1.5px solid var(--line);
    align-items:center;justify-content:center;flex-direction:column;gap:5px;
  }
  .nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:.25s;}
  .nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle.open span:nth-child(2){opacity:0;}
  .nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  .mobile-menu{
    display:none;border-top:1px solid var(--line);
    background:rgba(255,253,246,.98);
    padding:10px 20px 18px;
  }
  .mobile-menu.open{display:block;}
  .mobile-menu a{
    display:block;padding:11px 8px;font-size:15px;font-weight:600;
    border-radius:9px;color:var(--ink-soft);
  }
  .mobile-menu a:hover{background:rgba(255,212,0,.2);color:var(--ink);}
  .mobile-menu .btn{width:100%;margin-top:10px;}

  /* ===== Section generic ===== */
  .section{padding:64px 0;position:relative;}
  .section-head{max-width:780px;margin:0 0 34px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:800;letter-spacing:1.5px;
    color:var(--ink);background:rgba(255,212,0,.35);
    padding:6px 14px;border-radius:999px;margin-bottom:16px;
  }
  .eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ink);}
  .section-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.28;font-weight:800;letter-spacing:-.5px;}
  .section-head p{margin-top:14px;color:var(--muted);font-size:15.5px;max-width:680px;}
  .divider-dot{display:inline-block;width:6px;height:6px;background:var(--yellow-deep);border-radius:50%;margin:0 8px;vertical-align:middle;}

  /* ===== Hero ===== */
  .hero{
    position:relative;overflow:hidden;
    padding:70px 0 78px;
    background:
      radial-gradient(700px 380px at 78% 8%, rgba(255,212,0,.35), transparent 62%),
      radial-gradient(600px 380px at 5% 90%, rgba(255,212,0,.18), transparent 60%),
      linear-gradient(180deg,#fffdf6 0%,#fffbea 100%);
  }
  .hero-grid{
    display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
  }
  .hero h1{
    font-size:clamp(30px,5vw,50px);line-height:1.16;font-weight:900;letter-spacing:-1px;
  }
  .hero h1 em{
    font-style:normal;position:relative;white-space:nowrap;
  }
  .hero h1 em::after{
    content:"";position:absolute;left:0;right:0;bottom:4px;height:14px;
    background:var(--yellow);z-index:-1;border-radius:4px;
  }
  .hero-lead{margin-top:22px;font-size:16.5px;color:var(--ink-soft);max-width:560px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px;}
  .hero-tags span{
    font-size:13px;font-weight:600;padding:6px 13px;border-radius:999px;
    background:#fff;border:1.5px solid var(--line);color:var(--ink-soft);
    transition:.2s;
  }
  .hero-tags span:hover{border-color:var(--yellow-deep);background:rgba(255,212,0,.18);color:var(--ink);}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px;}
  .btn-lg{padding:15px 30px;font-size:16px;border-radius:12px;}

  .hero-visual{position:relative;display:flex;flex-direction:column;gap:14px;}
  .hv-card{
    background:#fff;border:1.5px solid var(--line);border-radius:20px;
    padding:20px 22px;box-shadow:var(--shadow-md);
    animation:fadeUp .7s ease both;
  }
  .hv-card:nth-child(1){animation-delay:.05s;}
  .hv-card:nth-child(2){animation-delay:.18s;margin-left:26px;}
  .hv-card:nth-child(3){animation-delay:.31s;}
  .hv-label{font-size:12px;font-weight:800;letter-spacing:1px;color:var(--muted);text-transform:uppercase;}
  .hv-big{font-size:26px;font-weight:900;letter-spacing:-.5px;margin-top:4px;}
  .hv-big small{font-size:13px;font-weight:600;color:var(--muted);letter-spacing:0;}
  .hv-bar{height:8px;border-radius:999px;background:#f3efe2;margin-top:12px;overflow:hidden;}
  .hv-bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--yellow),var(--yellow-deep));animation:barGrow 1.2s ease both .35s;}
  .hv-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px;}
  .hv-chips b{
    font-size:12px;font-weight:700;padding:4px 10px;border-radius:7px;
    background:#fffbe6;color:var(--ink-soft);border:1px solid #f4e7ba;
  }
  .hv-glow{
    position:absolute;width:220px;height:220px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,212,0,.5),transparent 70%);
    top:-40px;right:-30px;filter:blur(10px);z-index:-1;animation:floatY 7s ease-in-out infinite;
  }

  @keyframes fadeUp{from{opacity:0;transform:translateY(22px);}to{opacity:1;transform:translateY(0);}}
  @keyframes barGrow{from{width:0;}to{width:88%;}}
  @keyframes floatY{0%,100%{transform:translateY(0);}50%{transform:translateY(-18px);}}

  /* ===== Stats strip ===== */
  .stats{
    background:var(--ink);color:#fff;border-radius:22px;
    padding:32px 28px;display:grid;grid-template-columns:repeat(4,1fr);gap:26px;
    box-shadow:var(--shadow-lg);
  }
  .stat h3{font-size:clamp(22px,3vw,32px);font-weight:900;color:var(--yellow);letter-spacing:-.5px;}
  .stat p{font-size:13.5px;color:#cfcfcf;margin-top:6px;}

  /* ===== Cards ===== */
  .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
  .card{
    background:var(--card);border:1.5px solid var(--line);border-radius:var(--radius);
    padding:26px 24px;box-shadow:var(--shadow-sm);
    transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    position:relative;overflow:hidden;
  }
  .card::after{
    content:"";position:absolute;left:0;top:0;width:0;height:4px;background:var(--yellow);
    transition:width .3s ease;
  }
  .card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#f0e3ae;}
  .card:hover::after{width:100%;}
  .card .ico{
    width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:rgba(255,212,0,.3);font-weight:900;font-size:17px;color:var(--ink);margin-bottom:16px;
  }
  .card h3{font-size:18px;font-weight:800;margin-bottom:9px;}
  .card p{font-size:14.5px;color:var(--muted);line-height:1.7;}

  .service-card{background:#fff;}
  .service-card .tag{font-size:12px;font-weight:800;color:var(--yellow-deep);letter-spacing:.5px;}

  /* ===== Capabilities list ===== */
  .cap-list{
    background:#fff;border:1.5px solid var(--line);border-radius:20px;
    padding:8px 26px;box-shadow:var(--shadow-sm);
  }
  .cap-item{
    display:flex;gap:18px;align-items:flex-start;padding:20px 0;
    border-bottom:1px dashed var(--line);
  }
  .cap-item:last-child{border-bottom:none;}
  .cap-item .num{
    font-size:13px;font-weight:900;color:var(--ink);background:rgba(255,212,0,.4);
    min-width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
  }
  .cap-item h3{font-size:16px;font-weight:800;margin-bottom:5px;}
  .cap-item p{font-size:14px;color:var(--muted);}

  /* ===== Steps ===== */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step;}
  .step{
    background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);
    padding:26px 22px;position:relative;transition:.22s;
  }
  .step:hover{border-color:var(--yellow-deep);transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .step .snum{
    font-size:13px;font-weight:900;color:var(--ink);background:var(--yellow);
    width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    margin-bottom:14px;
  }
  .step h3{font-size:16px;font-weight:800;margin-bottom:7px;}
  .step p{font-size:13.5px;color:var(--muted);}

  /* ===== Compare table ===== */
  .table-wrap{overflow-x:auto;border-radius:var(--radius);border:1.5px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);}
  table.compare{width:100%;border-collapse:collapse;min-width:680px;font-size:14.5px;}
  table.compare th,table.compare td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);}
  table.compare thead th{background:#fffbea;font-weight:800;font-size:14px;color:var(--ink);}
  table.compare thead th:first-child{color:var(--muted);}
  table.compare tbody tr:last-child td{border-bottom:none;}
  table.compare td.hl{background:rgba(255,212,0,.14);font-weight:700;}
  table.compare .y{color:var(--yellow-deep);font-weight:900;}
  table.compare .x{color:#b5b5b5;font-weight:700;}
  .rating-badge{
    display:inline-flex;align-items:center;gap:8px;background:var(--ink);color:#fff;
    padding:10px 18px;border-radius:999px;font-weight:800;font-size:14px;margin-top:20px;
  }
  .rating-badge .stars{color:var(--yellow);letter-spacing:2px;}
  .score-big{font-size:30px;font-weight:900;color:var(--yellow);}

  /* ===== FAQ ===== */
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:#fff;border:1.5px solid var(--line);border-radius:14px;overflow:hidden;
    transition:border-color .2s, box-shadow .2s;
  }
  .faq-item.open{border-color:var(--yellow-deep);box-shadow:var(--shadow-sm);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:none;border:none;text-align:left;padding:18px 22px;
    font-size:15.5px;font-weight:700;color:var(--ink);
  }
  .faq-q .plus{
    font-size:20px;font-weight:400;color:var(--yellow-deep);flex-shrink:0;
    transition:transform .25s ease;line-height:1;width:20px;text-align:center;
  }
  .faq-item.open .plus{transform:rotate(45deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--muted);}

  /* ===== Reviews ===== */
  .review{
    background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);
    padding:24px;display:flex;flex-direction:column;gap:14px;
    transition:transform .22s, box-shadow .22s;
  }
  .review:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .review .stars{color:var(--yellow-deep);font-size:15px;letter-spacing:2px;}
  .review p{font-size:14.5px;color:var(--ink-soft);line-height:1.7;flex:1;}
  .review .who{display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px dashed var(--line);}
  .avatar{
    width:42px;height:42px;border-radius:50%;background:rgba(255,212,0,.4);
    display:flex;align-items:center;justify-content:center;font-weight:900;color:var(--ink);flex-shrink:0;
  }
  .who b{font-size:14.5px;display:block;}
  .who span{font-size:12.5px;color:var(--muted);}

  /* ===== Gallery ===== */
  .gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;}
  .g-card{
    border-radius:var(--radius);overflow:hidden;border:1.5px solid var(--line);
    background:#fff;box-shadow:var(--shadow-sm);transition:transform .25s, box-shadow .25s;
  }
  .g-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
  .g-media{aspect-ratio:16/10;background:#fffbea;overflow:hidden;}
  .g-media img{width:100%;height:100%;object-fit:cover;}
  .g-body{padding:18px 20px;}
  .g-body h3{font-size:16px;font-weight:800;margin-bottom:6px;}
  .g-body p{font-size:13.5px;color:var(--muted);}

  .banner-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
  .banner-strip figure{
    margin:0;border-radius:14px;overflow:hidden;border:1.5px solid var(--line);background:#fff;
    aspect-ratio:4/5;
  }
  .banner-strip img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .banner-strip figure:hover img{transform:scale(1.05);}

  /* ===== Model tags ===== */
  .model-cloud{
    display:flex;flex-wrap:wrap;gap:9px;
    background:#fff;border:1.5px solid var(--line);border-radius:18px;padding:24px;
    box-shadow:var(--shadow-sm);
  }
  .model-cloud span{
    font-size:13.5px;font-weight:600;padding:7px 15px;border-radius:999px;
    background:#fffdf1;border:1.5px solid #f2e8c4;color:var(--ink-soft);
    transition:.2s;cursor:default;
  }
  .model-cloud span:hover{background:var(--yellow);border-color:var(--yellow-deep);color:var(--ink);transform:translateY(-2px);}

  /* ===== Token price ===== */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .price-card{
    background:#fff;border:1.5px solid var(--line);border-radius:20px;padding:28px 24px;
    display:flex;flex-direction:column;gap:14px;transition:.22s;
  }
  .price-card.featured{background:linear-gradient(170deg,#fffdf0,#fff);border-color:var(--yellow-deep);box-shadow:var(--shadow-md);}
  .price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
  .price-card h3{font-size:16px;font-weight:800;}
  .price-val{font-size:32px;font-weight:900;letter-spacing:-1px;color:var(--ink);}
  .price-val small{font-size:13px;font-weight:600;color:var(--muted);}
  .price-card ul{display:grid;gap:9px;font-size:14px;color:var(--ink-soft);}
  .price-card li{padding-left:20px;position:relative;}
  .price-card li::before{content:"✓";position:absolute;left:0;color:var(--yellow-deep);font-weight:900;}

  /* ===== Articles ===== */
  .article-list{display:grid;gap:12px;}
  .article-item{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    background:#fff;border:1.5px solid var(--line);border-radius:14px;
    padding:18px 22px;transition:.2s;
  }
  .article-item:hover{border-color:var(--yellow-deep);transform:translateX(4px);box-shadow:var(--shadow-sm);}
  .article-item h3{font-size:15.5px;font-weight:700;}
  .article-item span{font-size:12.5px;color:var(--muted);flex-shrink:0;}

  /* ===== Form ===== */
  .form-shell{
    display:grid;grid-template-columns:1fr 1fr;gap:0;
    border-radius:22px;overflow:hidden;border:1.5px solid var(--line);
    box-shadow:var(--shadow-md);background:#fff;
  }
  .form-side{
    background:var(--ink);color:#fff;padding:40px 34px;
    display:flex;flex-direction:column;gap:18px;justify-content:center;
  }
  .form-side h3{font-size:24px;font-weight:900;line-height:1.3;}
  .form-side p{font-size:14.5px;color:#cfcfcf;}
  .form-side .contact-line{font-size:14px;color:#fff;display:flex;gap:10px;align-items:center;}
  .form-side .contact-line b{color:var(--yellow);}
  .form-side .kefu{margin-top:8px;width:130px;border-radius:12px;overflow:hidden;border:2px solid rgba(255,212,0,.5);}
  .form-main{padding:38px 34px;}
  .field{margin-bottom:18px;}
  .field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink-soft);}
  .field input,.field select,.field textarea{
    width:100%;padding:12px 14px;border-radius:10px;border:1.5px solid var(--line);
    font-size:14.5px;color:var(--ink);background:#fffdf6;font-family:inherit;
    transition:border-color .2s, box-shadow .2s;
  }
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--yellow-deep);box-shadow:0 0 0 3px rgba(255,212,0,.22);
  }
  .field textarea{min-height:110px;resize:vertical;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}

  /* ===== Network / timeline ===== */
  .timeline{position:relative;padding-left:28px;display:grid;gap:26px;}
  .timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--yellow),#f0e6c0);}
  .tl-item{position:relative;}
  .tl-item::before{
    content:"";position:absolute;left:-28px;top:5px;width:14px;height:14px;border-radius:50%;
    background:var(--yellow);border:3px solid #fff;box-shadow:0 0 0 2px var(--yellow-deep);
  }
  .tl-item h3{font-size:16px;font-weight:800;margin-bottom:5px;}
  .tl-item p{font-size:14px;color:var(--muted);}

  .join-banner{
    background:linear-gradient(120deg,var(--ink),#2a2410);
    color:#fff;border-radius:22px;padding:42px 38px;
    display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:center;
    box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
  }
  .join-banner::before{
    content:"";position:absolute;width:300px;height:300px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,212,0,.3),transparent 70%);
    right:-60px;top:-80px;
  }
  .join-banner h2{font-size:clamp(22px,3vw,30px);font-weight:900;line-height:1.3;position:relative;}
  .join-banner p{font-size:14.5px;color:#d8d3c4;margin-top:12px;position:relative;}
  .join-banner .btn{position:relative;}

  /* ===== Footer ===== */
  .site-footer{
    background:var(--ink);color:#d9d5c8;padding:52px 0 26px;margin-top:0;
  }
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12);}
  .footer-brand .brand-name{color:#fff;font-size:19px;}
  .footer-brand p{font-size:13.5px;color:#a9a498;margin-top:14px;max-width:280px;}
  .footer-col h4{color:var(--yellow);font-size:14px;font-weight:800;margin-bottom:15px;letter-spacing:.5px;}
  .footer-col a,.footer-col p{display:block;font-size:13.5px;color:#c8c3b5;margin-bottom:10px;transition:color .2s;}
  .footer-col a:hover{color:var(--yellow);}
  .footer-links-cloud{display:flex;flex-wrap:wrap;gap:8px 16px;}
  .footer-links-cloud a{font-size:13px;color:#c8c3b5;}
  .footer-bottom{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
    gap:12px;padding-top:22px;font-size:13px;color:#97927f;
  }
  .footer-bottom a{color:#c8c3b5;}
  .footer-bottom a:hover{color:var(--yellow);}

  /* ===== Floating ===== */
  .float-tools{position:fixed;right:18px;bottom:22px;z-index:200;display:flex;flex-direction:column;gap:12px;align-items:center;}
  .float-btn{
    width:50px;height:50px;border-radius:50%;border:none;
    background:var(--yellow);color:var(--ink);font-weight:900;font-size:12px;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 8px 20px rgba(245,183,0,.45);
    transition:transform .2s, box-shadow .2s, opacity .2s;
  }
  .float-btn:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 12px 26px rgba(245,183,0,.55);}
  .float-btn.top{background:var(--ink);color:#fff;opacity:0;pointer-events:none;}
  .float-btn.top.show{opacity:1;pointer-events:auto;}

  .kefu-pop{
    position:fixed;right:78px;bottom:22px;z-index:201;
    background:#fff;border:1.5px solid var(--line);border-radius:16px;
    padding:14px;box-shadow:var(--shadow-lg);width:200px;display:none;
  }
  .kefu-pop.show{display:block;animation:fadeUp .25s ease both;}
  .kefu-pop img{width:100%;border-radius:10px;}
  .kefu-pop p{font-size:12.5px;color:var(--muted);text-align:center;margin-top:8px;}

  /* ===== Reveal ===== */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease, transform .7s ease;}
  .reveal.in{opacity:1;transform:none;}

  /* ===== Responsive ===== */
  @media (max-width:1024px){
    .nav-links{display:none;}
    .nav-toggle{display:flex;}
    .nav-actions .btn-ghost{display:none;}
    .hero-grid{grid-template-columns:1fr;}
    .hero-visual{margin-top:6px;}
    .hv-card:nth-child(2){margin-left:0;}
    .stats{grid-template-columns:repeat(2,1fr);}
    .grid-3{grid-template-columns:repeat(2,1fr);}
    .steps{grid-template-columns:repeat(2,1fr);}
    .footer-grid{grid-template-columns:1fr 1fr;}
    .join-banner{grid-template-columns:1fr;}
    .form-shell{grid-template-columns:1fr;}
    .price-grid{grid-template-columns:1fr;}
  }
  @media (max-width:720px){
    .section{padding:48px 0;}
    .hero{padding:44px 0 54px;}
    .grid-3,.grid-2,.gallery,.banner-strip{grid-template-columns:1fr;}
    .banner-strip{grid-template-columns:repeat(2,1fr);}
    .stats{grid-template-columns:1fr 1fr;gap:18px;padding:26px 20px;}
    .hero-cta .btn{flex:1 1 auto;}
    .form-row{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .form-main,.form-side{padding:28px 22px;}
    .nav-actions .btn-primary{padding:9px 14px;font-size:13px;}
    .float-tools{right:12px;bottom:14px;}
    .kefu-pop{right:70px;bottom:14px;width:170px;}
    .article-item{flex-direction:column;align-items:flex-start;gap:6px;}
  }