*{box-sizing:border-box;margin:0;padding:0}
  :root{
    --ink:#10203a;--ink-2:#31415c;--muted:#61708a;
    --brand:#1b6bff;--brand-2:#00c2c7;--accent:#ffb020;
    --line:#e2e9f5;--card:#ffffff;
    --bg-1:#f4f8ff;--bg-2:#eef7f9;--radius:18px;
    --shadow:0 10px 30px rgba(27,60,120,.08);
    --shadow-hover:0 18px 44px rgba(27,60,120,.16);
  }
  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:linear-gradient(180deg,#f4f8ff 0%,#eef7f9 40%,#f6f9ff 100%);
    background-attachment:fixed;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none}
  img{max-width:100%;height:auto;display:block}
  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 22px}

  /* ============ NAV ============ */
  .site-header{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,.86);
    backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
  .ai-page-logo{max-height:38px;width:auto}
  .brand-text{font-weight:800;font-size:1.05rem;letter-spacing:.5px;color:var(--ink);white-space:nowrap}
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
  .nav-links a{
    font-size:.92rem;color:var(--ink-2);padding:8px 12px;border-radius:10px;
    transition:color .2s,background .2s;white-space:nowrap;
  }
  .nav-links a:hover{color:var(--brand);background:#eaf1ff}
  .nav-cta{
    background:linear-gradient(120deg,var(--brand),var(--brand-2));
    color:#fff !important;font-weight:600;padding:9px 18px !important;
    border-radius:999px;box-shadow:0 8px 20px rgba(27,107,255,.28);
    transition:transform .2s,box-shadow .2s;
  }
  .nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(27,107,255,.36);background:linear-gradient(120deg,var(--brand),var(--brand-2)) !important;color:#fff !important}
  .burger{
    display:none;flex-direction:column;justify-content:center;gap:5px;
    width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;
  }
  .burger span{display:block;width:20px;height:2px;background:var(--ink);margin:0 auto;border-radius:2px;transition:.25s}
  .burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.open span:nth-child(2){opacity:0}
  .burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  /* ============ HERO ============ */
  .hero{position:relative;overflow:hidden;padding:76px 0 68px}
  .hero::before{
    content:"";position:absolute;inset:0;z-index:0;
    background:
      radial-gradient(720px 380px at 12% 8%,rgba(27,107,255,.14),transparent 62%),
      radial-gradient(620px 420px at 88% 22%,rgba(0,194,199,.16),transparent 60%),
      radial-gradient(520px 360px at 60% 100%,rgba(255,176,32,.12),transparent 60%);
  }
  .hero-grid-bg{
    position:absolute;inset:0;z-index:0;opacity:.5;
    background-image:linear-gradient(rgba(27,107,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(27,107,255,.06) 1px,transparent 1px);
    background-size:52px 52px;
    mask-image:radial-gradient(circle at 50% 30%,#000 0%,transparent 78%);
  }
  .hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--line);color:var(--brand);
    font-size:.8rem;font-weight:600;padding:6px 14px;border-radius:999px;
    box-shadow:0 6px 16px rgba(27,107,255,.1);margin-bottom:20px;
  }
  .hero-eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(0,194,199,.16);animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{box-shadow:0 0 0 4px rgba(0,194,199,.16)}50%{box-shadow:0 0 0 8px rgba(0,194,199,.05)}}
  h1{font-size:2.5rem;line-height:1.24;letter-spacing:-.5px;font-weight:800;color:var(--ink)}
  h1 .grad{background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero-sub{margin-top:18px;font-size:1.02rem;color:var(--ink-2);max-width:560px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
  .hero-tags span{font-size:.8rem;color:var(--ink-2);background:#fff;border:1px solid var(--line);padding:5px 12px;border-radius:999px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:.95rem;padding:13px 28px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .22s,box-shadow .22s,background .22s;font-family:inherit}
  .btn-primary{background:linear-gradient(120deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 28px rgba(27,107,255,.32)}
  .btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(27,107,255,.4)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow)}
  .btn-ghost:hover{transform:translateY(-3px);border-color:#c7d8f7;color:var(--brand)}
  .btn:active{transform:translateY(-1px) scale(.99)}

  .hero-panel{
    position:relative;background:linear-gradient(160deg,#ffffff,#f2f7ff);
    border:1px solid #dbe7fb;border-radius:26px;padding:26px;
    box-shadow:0 24px 60px rgba(27,70,150,.14);
  }
  .hero-panel::after{
    content:"";position:absolute;inset:-1px;border-radius:26px;pointer-events:none;
    background:linear-gradient(140deg,rgba(27,107,255,.35),transparent 45%,rgba(0,194,199,.3));
    -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
    -webkit-mask-composite:xor;mask-composite:exclude;padding:1px;
  }
  .panel-title{font-size:.78rem;font-weight:700;letter-spacing:1.5px;color:var(--muted);text-transform:uppercase;margin-bottom:16px}
  .stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .stat-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;transition:transform .25s,box-shadow .25s}
  .stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
  .stat-num{font-size:1.5rem;font-weight:800;color:var(--brand);line-height:1.1}
  .stat-num small{font-size:.8rem;color:var(--muted);font-weight:600;margin-left:2px}
  .stat-label{font-size:.78rem;color:var(--muted);margin-top:6px}
  .panel-note{margin-top:16px;font-size:.8rem;color:var(--ink-2);background:#eef7ff;border:1px dashed #b9d3ff;border-radius:12px;padding:10px 14px;display:flex;align-items:center;gap:8px}
  .panel-note b{color:var(--brand)}

  /* ============ SECTION BASE ============ */
  section{padding:74px 0;position:relative}
  .sec-head{max-width:720px;margin-bottom:44px}
  .sec-eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:2px;color:var(--brand);background:#eaf1ff;padding:5px 14px;border-radius:999px;margin-bottom:14px}
  .sec-title{font-size:1.9rem;font-weight:800;line-height:1.3;letter-spacing:-.3px;color:var(--ink)}
  .sec-desc{margin-top:12px;color:var(--ink-2);font-size:.98rem}
  .center{text-align:center;margin-left:auto;margin-right:auto}

  /* reveal */
  .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.22,.7,.3,1),transform .7s cubic-bezier(.22,.7,.3,1)}
  .reveal.in{opacity:1;transform:none}

  /* ============ ABOUT / PLATFORM ============ */
  .about-wrap{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
  .about-text p{color:var(--ink-2);margin-bottom:14px;font-size:.98rem}
  .about-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
  .about-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px 16px;transition:transform .25s,box-shadow .25s,border-color .25s}
  .about-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#c7d8f7}
  .about-item b{display:block;font-size:.9rem;color:var(--ink);margin-bottom:3px}
  .about-item span{font-size:.8rem;color:var(--muted)}
  .about-visual{
    background:linear-gradient(155deg,#ffffff,#eef6ff);
    border:1px solid #dbe7fb;border-radius:22px;padding:24px;
    box-shadow:var(--shadow);position:relative;overflow:hidden;
  }
  .about-visual h3{font-size:1.05rem;margin-bottom:16px;color:var(--ink)}
  .model-cloud{display:flex;flex-wrap:wrap;gap:8px}
  .model-cloud span{font-size:.78rem;color:var(--ink-2);background:#fff;border:1px solid var(--line);border-radius:8px;padding:5px 10px;transition:.2s}
  .model-cloud span:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}

  /* ============ SERVICE CARDS ============ */
  .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .service-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;position:relative;overflow:hidden;
    transition:transform .28s,box-shadow .28s,border-color .28s;
  }
  .service-card::before{
    content:"";position:absolute;left:0;top:0;height:3px;width:0;
    background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .35s;
  }
  .service-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:#c7d8f7}
  .service-card:hover::before{width:100%}
  .svc-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#eaf1ff,#e0f7f8);color:var(--brand);font-weight:800;font-size:1.1rem;margin-bottom:14px}
  .service-card h3{font-size:1.02rem;margin-bottom:8px;color:var(--ink)}
  .service-card p{font-size:.86rem;color:var(--muted)}

  /* ============ ONE-STOP / FLOW ============ */
  .flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .flow-step{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .25s,box-shadow .25s}
  .flow-step:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .flow-num{font-size:1.7rem;font-weight:800;color:#cfe1ff;line-height:1;margin-bottom:10px}
  .flow-step h4{font-size:.98rem;color:var(--ink);margin-bottom:6px}
  .flow-step p{font-size:.82rem;color:var(--muted)}

  /* ============ 行业方案 ============ */
  .ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .ind-card{background:linear-gradient(160deg,#fff,#f5f9ff);border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .25s,box-shadow .25s,border-color .25s}
  .ind-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:#bcd4ff}
  .ind-card h3{font-size:1rem;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:8px}
  .ind-card h3::before{content:"";width:8px;height:8px;border-radius:2px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
  .ind-card p{font-size:.86rem;color:var(--muted)}

  /* ============ 服务网络 ============ */
  .network{background:linear-gradient(150deg,#0f2350,#16336e 60%,#0e4a63);color:#eaf2ff;border-radius:26px;padding:46px 40px;position:relative;overflow:hidden}
  .network::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 300px at 85% 10%,rgba(0,194,199,.35),transparent 60%),radial-gradient(400px 260px at 10% 90%,rgba(27,107,255,.4),transparent 60%)}
  .network-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
  .network h2{font-size:1.7rem;font-weight:800;margin-bottom:12px;color:#fff}
  .network p{color:#b8cdf0;font-size:.95rem}
  .network-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
  .network-tags span{font-size:.8rem;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);padding:6px 13px;border-radius:999px;color:#e6f0ff}
  .net-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
  .net-stat{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:18px;backdrop-filter:blur(6px)}
  .net-stat b{display:block;font-size:1.4rem;color:#fff;line-height:1.2}
  .net-stat span{font-size:.78rem;color:#a9c1e8}

  /* ============ 流程 standard ============ */
  .std-flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
  .std-step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px 16px;text-align:center;transition:transform .25s,box-shadow .25s}
  .std-step:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .std-step .n{width:34px;height:34px;border-radius:50%;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
  .std-step b{font-size:.9rem;color:var(--ink);display:block;margin-bottom:4px}
  .std-step span{font-size:.76rem;color:var(--muted)}

  /* ============ 案例 ============ */
  .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .case-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .28s,box-shadow .28s}
  .case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
  .case-media{aspect-ratio:16/10;background:#eef4ff;overflow:hidden}
  .case-media img{width:100%;height:100%;object-fit:cover}
  .case-body{padding:18px 20px}
  .case-body h3{font-size:.98rem;color:var(--ink);margin-bottom:6px}
  .case-body p{font-size:.83rem;color:var(--muted)}

  /* ============ 对比评测 ============ */
  .compare-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:start}
  .score-card{
    background:linear-gradient(160deg,#ffffff,#eef6ff);border:1px solid #dbe7fb;border-radius:24px;padding:32px;text-align:center;
    box-shadow:var(--shadow);position:relative;overflow:hidden;
  }
  .score-card::before{content:"";position:absolute;top:-40%;right:-30%;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(27,107,255,.18),transparent 70%)}
  .score-num{font-size:3.6rem;font-weight:800;line-height:1;background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .score-total{font-size:.9rem;color:var(--muted);margin-top:4px}
  .stars{font-size:1.3rem;letter-spacing:4px;color:var(--accent);margin:14px 0 6px}
  .score-label{font-size:.86rem;color:var(--ink-2)}
  .cmp-table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
  table{width:100%;border-collapse:collapse;font-size:.88rem}
  thead th{background:#f2f7ff;color:var(--ink);text-align:left;padding:14px 18px;font-weight:700;font-size:.84rem;border-bottom:1px solid var(--line)}
  tbody td{padding:13px 18px;border-bottom:1px solid #eef3fb;color:var(--ink-2);vertical-align:top}
  tbody tr:last-child td{border-bottom:none}
  tbody tr:hover td{background:#fafcff}
  tbody td:first-child{font-weight:600;color:var(--ink)}

  /* ============ 需求匹配 FORM ============ */
  .form-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:36px;align-items:start}
  .form-info{background:linear-gradient(155deg,#fff,#eef6ff);border:1px solid #dbe7fb;border-radius:22px;padding:30px;box-shadow:var(--shadow)}
  .form-info h2{font-size:1.5rem;font-weight:800;margin-bottom:12px}
  .form-info p{font-size:.92rem;color:var(--ink-2);margin-bottom:20px}
  .contact-list{list-style:none;display:grid;gap:14px}
  .contact-list li{display:flex;gap:12px;align-items:flex-start;font-size:.88rem;color:var(--ink-2)}
  .contact-list .ci{flex:none;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:#eaf1ff;color:var(--brand);font-weight:700;font-size:.82rem}
  .kefu-qr{margin-top:20px;display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px}
  .kefu-qr img{width:86px;height:86px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
  .kefu-qr b{font-size:.88rem;color:var(--ink);display:block;margin-bottom:4px}
  .kefu-qr span{font-size:.78rem;color:var(--muted)}
  form{background:#fff;border:1px solid var(--line);border-radius:22px;padding:30px;box-shadow:var(--shadow)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:.84rem;font-weight:600;color:var(--ink);margin-bottom:6px}
  .field input,.field select,.field textarea{
    width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:10px;
    font-family:inherit;font-size:.9rem;color:var(--ink);background:#fbfdff;transition:border-color .2s,box-shadow .2s;
  }
  .field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,107,255,.12);background:#fff}
  .field textarea{resize:vertical;min-height:110px}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .form-note{font-size:.76rem;color:var(--muted);margin-top:12px}

  /* ============ Token 比价 ============ */
  .token-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .token-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;transition:transform .25s,box-shadow .25s,border-color .25s}
  .token-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .token-card.hl{border-color:#bcd4ff;background:linear-gradient(160deg,#fff,#f2f8ff)}
  .token-card h3{font-size:1rem;color:var(--ink);margin-bottom:4px}
  .token-price{font-size:1.6rem;font-weight:800;color:var(--brand);margin:10px 0 2px}
  .token-price small{font-size:.8rem;color:var(--muted);font-weight:500}
  .token-card ul{list-style:none;margin-top:14px;display:grid;gap:8px}
  .token-card li{font-size:.82rem;color:var(--ink-2);padding-left:18px;position:relative}
  .token-card li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2))}

  /* ============ 评论 ============ */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .review-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .25s,box-shadow .25s}
  .review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .review-stars{color:var(--accent);letter-spacing:2px;font-size:.9rem;margin-bottom:10px}
  .review-card p{font-size:.88rem;color:var(--ink-2);min-height:76px}
  .review-user{display:flex;align-items:center;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}
  .avatar{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#eaf1ff,#d9f4f5);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
  .review-user b{display:block;font-size:.86rem;color:var(--ink)}
  .review-user span{font-size:.76rem;color:var(--muted)}

  /* ============ 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:border-color .2s,box-shadow .2s}
  .faq-item.open{border-color:#bcd4ff;box-shadow:var(--shadow)}
  .faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 22px;font-family:inherit;font-size:.94rem;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:14px;cursor:pointer}
  .faq-q .ico{flex:none;width:22px;height:22px;border-radius:50%;background:#eaf1ff;color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:1rem;transition:transform .3s}
  .faq-item.open .ico{transform:rotate(45deg);background:var(--brand);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease}
  .faq-a p{padding:0 22px 18px;font-size:.86rem;color:var(--ink-2)}

  /* ============ AI百科 / 行业资讯 ============ */
  .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .article-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;transition:transform .25s,box-shadow .25s}
  .article-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
  .article-card .tag{font-size:.72rem;color:var(--brand);background:#eaf1ff;padding:3px 10px;border-radius:999px;display:inline-block;margin-bottom:12px}
  .article-card h3{font-size:.96rem;color:var(--ink);margin-bottom:8px;line-height:1.5}
  .article-card p{font-size:.82rem;color:var(--muted);margin-bottom:14px}
  .article-card .more{font-size:.82rem;color:var(--brand);font-weight:600}
  .article-card a{display:block}

  /* ============ 标签云 ============ */
  .tagcloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
  .tagcloud a{font-size:.82rem;color:var(--ink-2);background:#fff;border:1px solid var(--line);padding:7px 15px;border-radius:999px;transition:.22s}
  .tagcloud a:hover{background:var(--brand);color:#fff;border-color:var(--brand);transform:translateY(-2px)}

  /* ============ 联系 / footer ============ */
  .footer{background:#0f2350;color:#c7d8f0;padding:52px 0 0;margin-top:20px}
  .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
  .footer h4{font-size:.92rem;color:#fff;margin-bottom:16px;font-weight:700}
  .footer-brand p{font-size:.84rem;color:#9db6dc;margin-bottom:14px;max-width:300px}
  .footer-logo{max-height:36px;width:auto;margin-bottom:14px}
  .footer-links{list-style:none;display:grid;gap:9px}
  .footer-links a{font-size:.84rem;color:#a9c1e8;transition:color .2s}
  .footer-links a:hover{color:#fff}
  .footer-friend{display:flex;flex-wrap:wrap;gap:8px 14px;padding:26px 0;border-top:1px solid rgba(255,255,255,.1);margin-top:34px}
  .footer-friend a{font-size:.8rem;color:#8fa9d3;transition:color .2s}
  .footer-friend a:hover{color:#fff}
  .footer-friend .fl-title{font-size:.8rem;color:#6d88b5;font-weight:600}
  .footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:.78rem;color:#7f9ac4}
  .footer-bottom a{color:#9db6dc}
  .footer-bottom a:hover{color:#fff}

  /* ============ floating ============ */
  .float-btn{
    position:fixed;right:20px;bottom:88px;z-index:90;
    width:50px;height:50px;border-radius:50%;border:none;cursor:pointer;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
    box-shadow:0 12px 26px rgba(27,107,255,.36);display:flex;align-items:center;justify-content:center;
    font-size:.72rem;font-weight:700;line-height:1.1;text-align:center;transition:transform .25s,opacity .25s;
  }
  .float-btn:hover{transform:translateY(-4px) scale(1.05)}
  .back-top{position:fixed;right:20px;bottom:24px;z-index:90;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--brand);cursor:pointer;box-shadow:var(--shadow);font-size:1rem;font-weight:700;opacity:0;pointer-events:none;transition:opacity .3s,transform .25s}
  .back-top.show{opacity:1;pointer-events:auto}
  .back-top:hover{transform:translateY(-3px)}
  .kefu-pop{
    position:fixed;right:20px;bottom:150px;z-index:95;width:220px;background:#fff;border:1px solid var(--line);
    border-radius:16px;box-shadow:0 20px 50px rgba(20,50,110,.2);padding:16px;text-align:center;
    opacity:0;transform:translateY(12px) scale(.96);pointer-events:none;transition:.28s;transform-origin:bottom right;
  }
  .kefu-pop.show{opacity:1;transform:none;pointer-events:auto}
  .kefu-pop img{width:150px;height:150px;object-fit:cover;border-radius:10px;margin:0 auto 10px;border:1px solid var(--line)}
  .kefu-pop b{display:block;font-size:.86rem;color:var(--ink)}
  .kefu-pop span{font-size:.76rem;color:var(--muted)}

  /* ============ responsive ============ */
  @media (max-width:1024px){
    .hero-inner{grid-template-columns:1fr;gap:36px}
    .sun{display:none}
    .about-wrap{grid-template-columns:1fr;gap:30px}
    .service-grid,.ind-grid,.case-grid,.review-grid,.article-grid,.token-grid{grid-template-columns:repeat(2,1fr)}
    .compare-wrap,.form-wrap{grid-template-columns:1fr}
    .network-inner{grid-template-columns:1fr;gap:26px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
    .std-flow{grid-template-columns:repeat(3,1fr)}
    .flow-grid{grid-template-columns:repeat(2,1fr)}
  }
  @media (max-width:768px){
    .nav-links{
      position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
      flex-direction:column;align-items:stretch;padding:12px 22px;gap:0;
      max-height:0;overflow:hidden;transition:max-height .35s ease;box-shadow:0 16px 30px rgba(20,50,110,.08);
    }
    .nav-links.open{max-height:520px;padding:12px 22px 18px;overflow-y:auto}
    .nav-links a{padding:11px 8px;border-bottom:1px solid #f0f4fb}
    .nav-cta{margin-top:10px;text-align:center;border-bottom:none !important}
    .burger{display:flex}
    h1{font-size:1.9rem}
    .sec-title{font-size:1.5rem}
    section{padding:56px 0}
    .hero{padding:52px 0 46px}
    .service-grid,.ind-grid,.case-grid,.review-grid,.article-grid,.token-grid,.flow-grid,.std-flow,.about-list,.net-stats{grid-template-columns:1fr}
    .form-row{grid-template-columns:1fr}
    .form-info,form,.network{padding:24px}
    .score-num{font-size:3rem}
    table{font-size:.8rem}
    thead th,tbody td{padding:11px 12px}
    .cmp-table-wrap{overflow-x:auto}
  }
  @media (prefers-reduced-motion:reduce){
    .reveal{opacity:1;transform:none;transition:none}
    html{scroll-behavior:auto}
    *{animation:none !important}
  }