*{margin:0;padding:0;box-sizing:border-box}
  :root{
    --red:#e01f2d;
    --red-dark:#b3121f;
    --red-soft:#fff0f1;
    --red-line:#f6c9cd;
    --ink:#1d1b1c;
    --ink-2:#4a4448;
    --ink-3:#7a7176;
    --paper:#fffaf7;
    --paper-2:#fff4ef;
    --cream:#fff6f1;
    --line:#f0dfd8;
    --shadow:0 14px 40px rgba(178,25,38,.10);
    --radius:16px;
    --max:1200px;
  }
  html{scroll-behavior:smooth}
  body{
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",system-ui,-apple-system,sans-serif;
    color:var(--ink);
    background:
      radial-gradient(1100px 520px at 12% -8%, #ffe3e4 0%, rgba(255,227,228,0) 60%),
      radial-gradient(900px 480px at 92% 4%, #ffe9dd 0%, rgba(255,233,221,0) 62%),
      linear-gradient(180deg,#fffaf7 0%,#fff6f1 45%,#fffaf7 100%);
    background-attachment:fixed;
    line-height:1.7;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  .container{width:100%;max-width:var(--max);margin:0 auto;padding:0 22px}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:.25s ease;white-space:nowrap;
  }
  .btn-primary{background:linear-gradient(135deg,#ef3040,#c81422);color:#fff;box-shadow:0 10px 26px rgba(200,20,34,.28)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(200,20,34,.34)}
  .btn-ghost{background:rgba(255,255,255,.86);color:var(--red-dark);border-color:var(--red-line)}
  .btn-ghost:hover{background:#fff;transform:translateY(-2px);box-shadow:0 10px 24px rgba(200,20,34,.14)}
  .btn-soft{background:var(--red-soft);color:var(--red-dark);border-color:#fbd7da}
  .btn-soft:hover{background:#ffe4e6}

  /* ===== Header ===== */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,250,247,.9);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:16px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .ai-page-logo{width:auto;max-height:40px;object-fit:contain}
  .brand-name{font-size:17px;font-weight:800;letter-spacing:.5px;color:var(--ink)}
  .brand-name span{color:var(--red)}
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;list-style:none}
  .nav-links a{
    display:inline-block;padding:8px 11px;font-size:14px;color:var(--ink-2);
    border-radius:8px;transition:.2s;
  }
  .nav-links a:hover{color:var(--red-dark);background:var(--red-soft)}
  .nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .nav-actions .btn{padding:10px 20px;font-size:14px}
  .menu-toggle{
    display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
    background:#fff;color:var(--red-dark);font-size:20px;cursor:pointer;align-items:center;justify-content:center;
  }

  /* ===== Hero ===== */
  .hero{position:relative;padding:70px 0 56px;overflow:hidden}
  .hero::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background:
      radial-gradient(520px 320px at 82% 18%, rgba(239,48,64,.16), transparent 70%),
      radial-gradient(420px 300px at 6% 80%, rgba(255,150,90,.16), transparent 70%);
  }
  .hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
    background:rgba(224,31,45,.09);color:var(--red-dark);font-size:13px;font-weight:600;
    border:1px solid rgba(224,31,45,.16);margin-bottom:20px;
  }
  .eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--red);display:inline-block;animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(1.35)}}
  h1{font-size:clamp(28px,4vw,46px);line-height:1.24;font-weight:900;letter-spacing:-.5px}
  h1 em{font-style:normal;color:var(--red);position:relative;white-space:nowrap}
  h1 em::after{content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:rgba(224,31,45,.12);border-radius:6px;z-index:-1}
  .hero-sub{margin-top:20px;font-size:16.5px;color:var(--ink-2);max-width:600px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .hero-note{display:flex;flex-wrap:wrap;gap:20px;margin-top:26px;font-size:13.5px;color:var(--ink-3)}
  .hero-note span{display:inline-flex;align-items:center;gap:6px}
  .hero-note span::before{content:"✓";color:var(--red);font-weight:900}

  .hero-panel{
    position:relative;border-radius:22px;padding:26px;
    background:linear-gradient(160deg,#fff,#fff3ef 70%,#ffe9e6);
    border:1px solid #f7d4d1;
    box-shadow:var(--shadow);
  }
  .hero-panel::after{
    content:"";position:absolute;inset:auto -1px -1px -1px;height:4px;border-radius:0 0 22px 22px;
    background:linear-gradient(90deg,#ef3040,#ff8a5b,#ef3040);
  }
  .panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
  .panel-head h2{font-size:16px;font-weight:800}
  .panel-head .tag{font-size:12px;padding:4px 10px;border-radius:999px;background:var(--red-soft);color:var(--red-dark);font-weight:600}
  .metric-list{display:grid;gap:12px}
  .metric{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    background:#fff;border:1px solid #f6dcd7;border-radius:12px;padding:13px 16px;
    transition:.25s;
  }
  .metric:hover{transform:translateX(4px);box-shadow:0 8px 20px rgba(178,25,38,.09);border-color:#f1bcb8}
  .metric-label{font-size:14px;color:var(--ink-2)}
  .metric-value{font-size:16px;font-weight:800;color:var(--red-dark)}
  .hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
  .hero-badges span{font-size:12px;padding:6px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2)}

  /* ===== Section shell ===== */
  section{padding:58px 0}
  .sec-head{max-width:760px;margin-bottom:34px}
  .sec-kicker{font-size:13px;font-weight:700;letter-spacing:2px;color:var(--red);text-transform:uppercase;margin-bottom:10px}
  .sec-head h2{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:-.4px;line-height:1.3}
  .sec-head p{margin-top:12px;color:var(--ink-2);font-size:15.5px}
  .sec-head-center{margin-left:auto;margin-right:auto;text-align:center}

  /* ===== Stats strip ===== */
  .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
  .stat{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px 20px;text-align:center;transition:.28s;position:relative;overflow:hidden;
  }
  .stat::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#ef3040,#ff8a5b)}
  .stat:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#f3c4bf}
  .stat b{display:block;font-size:26px;font-weight:900;color:var(--red-dark);letter-spacing:-.5px}
  .stat span{display:block;font-size:13.5px;color:var(--ink-3);margin-top:6px}

  /* ===== About ===== */
  .about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
  .about-text p{color:var(--ink-2);font-size:15.5px;margin-bottom:14px}
  .about-points{display:grid;gap:12px;margin-top:20px}
  .about-points li{
    list-style:none;display:flex;gap:12px;padding:14px 16px;background:#fff;
    border:1px solid var(--line);border-radius:12px;transition:.25s;
  }
  .about-points li:hover{border-color:#f3c4bf;transform:translateX(4px)}
  .about-points .dot{
    flex-shrink:0;width:26px;height:26px;border-radius:8px;background:var(--red-soft);color:var(--red-dark);
    display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;
  }
  .about-points strong{display:block;font-size:14.5px;color:var(--ink)}
  .about-points small{font-size:13px;color:var(--ink-3);line-height:1.6}
  .about-visual{
    border-radius:20px;padding:28px;color:#fff;position:relative;overflow:hidden;
    background:linear-gradient(150deg,#d4172a,#a5101d 55%,#7d0b16);
    box-shadow:0 20px 48px rgba(160,15,28,.28);
  }
  .about-visual::before{
    content:"";position:absolute;width:240px;height:240px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);
    top:-70px;right:-60px;
  }
  .about-visual h3{font-size:19px;font-weight:800;margin-bottom:14px;position:relative}
  .about-visual ul{list-style:none;display:grid;gap:12px;position:relative}
  .about-visual li{display:flex;gap:10px;font-size:14.5px;align-items:flex-start;color:#ffe9e7}
  .about-visual li::before{content:"◆";color:#ffb3a8;font-size:11px;margin-top:6px}
  .about-visual .visual-foot{margin-top:22px;font-size:13px;color:#ffd3ce;border-top:1px solid rgba(255,255,255,.2);padding-top:16px;position:relative}

  /* ===== Service cards ===== */
  .card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .scard{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px 22px;transition:.3s;position:relative;overflow:hidden;
  }
  .scard::after{
    content:"";position:absolute;left:0;bottom:0;height:3px;width:0;
    background:linear-gradient(90deg,#ef3040,#ff8a5b);transition:width .35s ease;
  }
  .scard:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:#f4cac5}
  .scard:hover::after{width:100%}
  .scard .ico{
    width:44px;height:44px;border-radius:12px;background:var(--red-soft);color:var(--red-dark);
    display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:900;margin-bottom:16px;
  }
  .scard h3{font-size:17px;font-weight:800;margin-bottom:8px}
  .scard p{font-size:14px;color:var(--ink-3);line-height:1.65}

  /* ===== One-stop workflow ===== */
  .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:flow}
  .flow-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;
    position:relative;transition:.28s;
  }
  .flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .flow-item b{
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;
    background:linear-gradient(135deg,#ef3040,#c81422);color:#fff;font-size:14px;font-weight:800;
    margin-bottom:14px;box-shadow:0 6px 14px rgba(200,20,34,.25);
  }
  .flow-item h3{font-size:16px;font-weight:800;margin-bottom:6px}
  .flow-item p{font-size:13.5px;color:var(--ink-3)}

  /* ===== Industry / scene tags ===== */
  .scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .scene{
    background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);
    border-radius:12px;padding:16px 16px;transition:.25s;
  }
  .scene:hover{background:var(--cream);transform:translateY(-3px);box-shadow:0 10px 24px rgba(178,25,38,.08)}
  .scene strong{display:block;font-size:14.5px;margin-bottom:4px}
  .scene span{font-size:13px;color:var(--ink-3);line-height:1.55;display:block}

  /* ===== Network ===== */
  .network{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  .net-card{
    border-radius:var(--radius);padding:22px;background:linear-gradient(155deg,#fff,#fff4f0);
    border:1px solid #f4d8d2;
  }
  .net-card h3{font-size:16px;font-weight:800;margin-bottom:6px;color:var(--ink)}
  .net-card p{font-size:13.5px;color:var(--ink-3)}
  .net-card .bar{height:6px;border-radius:99px;background:#f7ded9;margin-top:14px;overflow:hidden}
  .net-card .bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#ef3040,#ff9a6b);width:0;transition:width 1.2s ease}
  .net-card.on .bar i{width:var(--w,80%)}

  /* ===== Steps ===== */
  .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
  .step{position:relative;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 16px;text-align:center}
  .step b{display:block;font-size:12px;letter-spacing:2px;color:var(--red);font-weight:800;margin-bottom:8px}
  .step h3{font-size:15px;font-weight:800;margin-bottom:6px}
  .step p{font-size:12.5px;color:var(--ink-3);line-height:1.55}

  /* ===== Cases ===== */
  .case-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
  .case{
    background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.3s;
  }
  .case:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
  .case-img{position:relative;background:#fdf0ee;aspect-ratio:16/9;overflow:hidden}
  .case-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
  .case:hover .case-img img{transform:scale(1.04)}
  .case-body{padding:20px 22px}
  .case-body .tagline{font-size:12px;font-weight:700;color:var(--red);letter-spacing:1px;margin-bottom:6px}
  .case-body h3{font-size:17px;font-weight:800;margin-bottom:8px}
  .case-body p{font-size:13.5px;color:var(--ink-3);line-height:1.65}
  .case-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
  .case-meta span{font-size:12px;padding:4px 10px;background:var(--red-soft);color:var(--red-dark);border-radius:999px}
  .showcase{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}
  .showcase figure{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
  .showcase figcaption{padding:12px 16px;font-size:13px;color:var(--ink-2)}

  /* ===== Compare ===== */
  .compare-top{display:grid;grid-template-columns:280px 1fr;gap:22px;align-items:stretch;margin-bottom:26px}
  .score-card{
    border-radius:20px;padding:28px;color:#fff;text-align:center;
    background:linear-gradient(160deg,#ef3040,#b3121f 70%,#8c0c17);
    box-shadow:0 18px 44px rgba(179,18,31,.3);position:relative;overflow:hidden;
  }
  .score-card::before{content:"";position:absolute;width:200px;height:200px;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.2),transparent 70%);top:-80px;left:-60px}
  .score-card .stars{font-size:20px;letter-spacing:3px;color:#ffd76b;margin-bottom:10px}
  .score-card b{display:block;font-size:48px;font-weight:900;line-height:1;letter-spacing:-2px}
  .score-card small{display:block;font-size:13px;color:#ffd9d4;margin-top:8px}
  .score-card .reco{margin-top:16px;font-size:13.5px;padding-top:14px;border-top:1px solid rgba(255,255,255,.24);color:#ffe7e4}
  .compare-note{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px}
  .compare-note h3{font-size:17px;font-weight:800;margin-bottom:10px}
  .compare-note p{font-size:14.5px;color:var(--ink-2);line-height:1.75}
  .compare-note .mini{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .compare-note .mini span{font-size:12px;padding:5px 12px;border-radius:999px;background:var(--red-soft);color:var(--red-dark);font-weight:600}

  .table-scroll{overflow-x:auto;border-radius:16px;border:1px solid var(--line);background:#fff;-webkit-overflow-scrolling:touch}
  table{width:100%;border-collapse:collapse;min-width:760px}
  thead th{
    background:linear-gradient(135deg,#fde7e6,#fbd6d3);color:var(--red-dark);
    font-size:14px;font-weight:800;padding:15px 18px;text-align:left;white-space:nowrap;
  }
  tbody td{padding:14px 18px;font-size:14px;color:var(--ink-2);border-top:1px solid #f7e8e4;vertical-align:top}
  tbody tr:hover{background:#fffaf8}
  tbody td:first-child{font-weight:700;color:var(--ink)}
  tbody td .mark{color:var(--red-dark);font-weight:800}

  /* ===== Token price ===== */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .price-card{
    background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px 24px;transition:.28s;position:relative;
  }
  .price-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
  .price-card.hot{border-color:var(--red);box-shadow:0 16px 36px rgba(200,20,34,.14)}
  .price-card.hot::before{
    content:"推荐";position:absolute;top:-1px;right:22px;background:var(--red);color:#fff;
    font-size:12px;padding:4px 12px;border-radius:0 0 8px 8px;font-weight:700;
  }
  .price-card h3{font-size:16px;font-weight:800;margin-bottom:6px}
  .price-card .desc{font-size:13px;color:var(--ink-3);margin-bottom:16px}
  .price-card .num{font-size:30px;font-weight:900;color:var(--red-dark);letter-spacing:-1px;line-height:1.1}
  .price-card .num small{font-size:13px;font-weight:600;color:var(--ink-3);margin-left:4px;letter-spacing:0}
  .price-card ul{list-style:none;margin-top:16px;display:grid;gap:9px}
  .price-card li{font-size:13.5px;color:var(--ink-2);padding-left:20px;position:relative}
  .price-card li::before{content:"✓";position:absolute;left:0;color:var(--red);font-weight:900}

  /* ===== Reviews ===== */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .review{
    background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:.28s;display:flex;flex-direction:column;gap:12px;
  }
  .review:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#f4cac5}
  .review .quote{font-size:14px;color:var(--ink-2);line-height:1.75}
  .review .who{display:flex;align-items:center;gap:10px;border-top:1px solid #f7e8e4;padding-top:14px;margin-top:auto}
  .avatar{
    width:38px;height:38px;border-radius:50%;flex-shrink:0;
    background:linear-gradient(135deg,#ef3040,#ff8a5b);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px;
  }
  .who strong{display:block;font-size:13.5px}
  .who span{font-size:12px;color:var(--ink-3)}
  .stars-sm{color:#f0a500;font-size:13px;letter-spacing:2px}

  /* ===== FAQ ===== */
  .faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.25s}
  .faq-item.open{border-color:#f0b9b4;box-shadow:0 10px 26px rgba(178,25,38,.08)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
    padding:18px 22px;background:none;border:0;cursor:pointer;text-align:left;
    font-size:15px;font-weight:700;color:var(--ink);font-family:inherit;
  }
  .faq-q:hover{color:var(--red-dark)}
  .faq-q .ic{flex-shrink:0;width:26px;height:26px;border-radius:50%;background:var(--red-soft);color:var(--red-dark);display:flex;align-items:center;justify-content:center;font-size:16px;transition:transform .3s}
  .faq-item.open .faq-q .ic{transform:rotate(45deg);background:var(--red);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 22px 20px;font-size:14px;color:var(--ink-3);line-height:1.75}

  /* ===== Articles & links ===== */
  .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
  .article{
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 20px;transition:.25s;
  }
  .article:hover{border-color:#f3c4bf;transform:translateX(4px);box-shadow:0 8px 22px rgba(178,25,38,.08)}
  .article strong{font-size:14.5px;font-weight:700}
  .article span{font-size:12.5px;color:var(--red);white-space:nowrap;font-weight:600}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .tag-cloud a{font-size:13px;padding:7px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--ink-2);transition:.25s}
  .tag-cloud a:hover{background:var(--red-soft);color:var(--red-dark);border-color:#f6c9cd;transform:translateY(-2px)}

  /* ===== Form ===== */
  .form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:30px;align-items:start}
  .form-side{background:linear-gradient(160deg,#fff,#fff0eb);border:1px solid #f4d8d2;border-radius:20px;padding:28px}
  .form-side h3{font-size:19px;font-weight:800;margin-bottom:10px}
  .form-side p{font-size:14px;color:var(--ink-3);line-height:1.7;margin-bottom:18px}
  .contact-rows{display:grid;gap:12px}
  .contact-row{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px}
  .contact-row b{color:var(--ink);font-weight:800;flex-shrink:0}
  .kefu{display:flex;align-items:center;gap:14px;margin-top:18px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px}
  .kefu img{width:96px;height:96px;object-fit:cover;border-radius:8px;border:1px solid #f2ded9}
  .kefu div{font-size:13px;color:var(--ink-3);line-height:1.6}
  .kefu div b{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}

  form.req-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:0 10px 30px rgba(178,25,38,.06)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink)}
  .field label i{color:var(--red);font-style:normal}
  .field input,.field select,.field textarea{
    width:100%;padding:12px 14px;border:1px solid #e9dcd7;border-radius:10px;
    font-size:14px;font-family:inherit;color:var(--ink);background:#fffdfb;transition:.2s;
  }
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(224,31,45,.1);background:#fff;
  }
  .field textarea{resize:vertical;min-height:110px}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:6px}
  .form-foot small{font-size:12.5px;color:var(--ink-3)}
  .form-tip{display:none;margin-top:14px;padding:12px 16px;border-radius:10px;background:#e8f7ee;color:#186b3a;font-size:13.5px}
  .form-tip.show{display:block}

  /* ===== Footer ===== */
  .site-footer{background:#2a1216;color:#f6dedd;padding:48px 0 0;margin-top:20px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:28px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
  .footer-brand .ai-page-logo{max-height:34px}
  .footer-brand b{font-size:16px;color:#fff;font-weight:800}
  .site-footer p{font-size:13.5px;color:#d9bdbb;line-height:1.75}
  .site-footer h4{font-size:14.5px;color:#fff;font-weight:800;margin-bottom:14px}
  .site-footer ul{list-style:none;display:grid;gap:9px}
  .site-footer ul a{font-size:13.5px;color:#d9bdbb;transition:.2s}
  .site-footer ul a:hover{color:#ffb0a6}
  .footer-links{display:flex;flex-wrap:wrap;gap:8px 14px}
  .footer-links a{font-size:13px;color:#d9bdbb}
  .footer-links a:hover{color:#ffb0a6}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding:20px 0;font-size:13px;color:#c9a9a7;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center}
  .footer-bottom a{color:#e3c2bf}
  .footer-bottom a:hover{color:#ffb0a6}

  /* ===== Float ===== */
  .float-cs{position:fixed;right:20px;bottom:24px;z-index:80;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
  .float-btn{
    width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;
    background:linear-gradient(135deg,#ef3040,#c81422);color:#fff;font-size:20px;
    display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(200,20,34,.34);
    transition:.25s;
  }
  .float-btn:hover{transform:translateY(-3px) scale(1.04)}
  .float-pop{
    display:none;width:200px;background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:14px;box-shadow:0 16px 40px rgba(20,10,10,.16);text-align:center;
  }
  .float-pop.show{display:block;animation:fadeUp .3s ease}
  .float-pop img{width:100%;border-radius:8px;margin-bottom:8px}
  .float-pop p{font-size:12.5px;color:var(--ink-3)}
  .to-top{background:#fff;color:var(--red-dark);border:1px solid var(--red-line);box-shadow:0 8px 20px rgba(20,10,10,.12)}
  @keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

  /* ===== Reveal ===== */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
  .reveal.in{opacity:1;transform:none}

  /* ===== Responsive ===== */
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:32px}
    .hero-panel{max-width:560px}
    .about-wrap{grid-template-columns:1fr}
    .card-grid{grid-template-columns:repeat(2,1fr)}
    .flow{grid-template-columns:repeat(2,1fr)}
    .scene-grid{grid-template-columns:repeat(2,1fr)}
    .network{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(3,1fr)}
    .price-grid{grid-template-columns:1fr}
    .review-grid{grid-template-columns:repeat(2,1fr)}
    .compare-top{grid-template-columns:1fr}
    .form-wrap{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
    .stats{grid-template-columns:repeat(2,1fr)}
    .nav-links{display:none}
    .menu-toggle{display:flex}
    .nav-actions .btn{display:none}
    .nav-links.open{
      display:flex;flex-direction:column;align-items:stretch;gap:0;
      position:absolute;top:70px;left:0;right:0;background:#fff;
      border-bottom:1px solid var(--line);padding:10px 16px 16px;box-shadow:0 16px 30px rgba(20,10,10,.08);
    }
    .nav-links.open a{padding:11px 12px;border-radius:8px}
  }
  @media (max-width:720px){
    section{padding:44px 0}
    .hero{padding:48px 0 40px}
    .hero-cta .btn{flex:1 1 auto}
    .card-grid,.review-grid,.article-list,.case-grid,.showcase{grid-template-columns:1fr}
    .flow,.scene-grid,.network,.steps{grid-template-columns:1fr}
    .stats{grid-template-columns:1fr 1fr;gap:12px}
    .stat b{font-size:22px}
    .form-row{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .footer-bottom{flex-direction:column;text-align:center;justify-content:center}
    .float-cs{right:14px;bottom:16px}
    .nav-wrap{min-height:64px}
    .brand-name{font-size:15px}
    .hero-note{gap:12px;font-size:12.5px}
    .score-card b{font-size:42px}
  }