:root{
      --bg:#f6f8ff;
      --panel:#ffffff;
      --panel-2:#fff7fb;
      --text:#182133;
      --muted:#5f6b84;
      --line:#dce4f4;
      --primary:#6d5efc;
      --primary-2:#24c7c5;
      --accent:#ff8a5b;
      --accent-2:#ffd166;
      --shadow:0 18px 50px rgba(27, 44, 85, .10);
      --shadow-soft:0 10px 24px rgba(27, 44, 85, .08);
      --radius:22px;
      --radius-sm:16px;
      --max:1200px;
    }
    *{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",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(109,94,252,.10), transparent 24%),
        radial-gradient(circle at top right, rgba(36,199,197,.12), transparent 28%),
        linear-gradient(180deg,#f7f9ff 0%,#fbfcff 48%,#f7f8fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--max)); margin:0 auto}
    header{position:sticky;top:0;z-index:40;background:rgba(246,248,255,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,228,244,.7)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;padding:4px;box-shadow:var(--shadow-soft)}
    .brand strong{font-size:18px;letter-spacing:.5px}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#36435f;padding:8px 10px;border-radius:999px;transition:.2s ease}
    .nav-links a:hover{background:#edf2ff;color:#1b2640}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;padding:11px 16px;font-weight:700;cursor:pointer;transition:.22s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#8b7cff);color:#fff;box-shadow:0 14px 26px rgba(109,94,252,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 18px 28px rgba(109,94,252,.28)}
    .btn-light{background:#fff;border-color:var(--line);color:#23304a}
    .btn-light:hover{background:#f4f7ff}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;width:44px;height:44px;align-items:center;justify-content:center}
    .menu-toggle span{width:20px;height:2px;background:#24314a;position:relative;display:block}
    .menu-toggle span:before,.menu-toggle span:after{content:"";position:absolute;left:0;width:20px;height:2px;background:#24314a}
    .menu-toggle span:before{top:-6px}.menu-toggle span:after{top:6px}
    main{padding-bottom:18px}
    section{padding:72px 0}
    .hero{padding:34px 0 60px;position:relative;overflow:hidden}
    .hero::before,.hero::after{content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none}
    .hero::before{width:320px;height:320px;background:rgba(255,138,91,.12);right:-90px;top:20px}
    .hero::after{width:280px;height:280px;background:rgba(36,199,197,.12);left:-80px;bottom:-60px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.panel,.faq-item,.review,.article,.table-wrap,.form-wrap,.case,.network,.timeline,.price-card{background:rgba(255,255,255,.82);backdrop-filter:blur(12px);border:1px solid rgba(220,228,244,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef7ff;color:#2850a5;font-size:13px;font-weight:700}
    h1{margin:18px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.1;letter-spacing:-.03em}
    .lead{font-size:16px;line-height:1.85;color:var(--muted);margin:0 0 22px;max-width:60ch}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .mini-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .mini-tags span,.chip{padding:8px 12px;border-radius:999px;background:#f4f7ff;color:#43506b;border:1px solid #e1e8fb;font-size:13px}
    .hero-panel{padding:22px;display:grid;gap:14px;align-content:start}
    .stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .stat{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f9fbff);border:1px solid #e4ebfa}
    .stat strong{display:block;font-size:24px;color:#1f2b45;margin-bottom:6px}
    .stat span{font-size:13px;color:var(--muted);line-height:1.6}
    .promo-line{padding:14px 16px;border-radius:18px;background:linear-gradient(135deg,rgba(109,94,252,.10),rgba(36,199,197,.10));border:1px solid rgba(109,94,252,.16);display:flex;justify-content:space-between;gap:12px;align-items:center}
    .promo-line b{font-size:15px}
    .promo-line small{display:block;color:var(--muted);margin-top:4px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,36px)}
    .section-head p{margin:0;color:var(--muted);max-width:58ch;line-height:1.75}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
    .card{padding:22px}
    .card h3{margin:14px 0 10px;font-size:18px}
    .card p,.panel p,.review p,.article p,.faq-item p,.case p{margin:0;color:var(--muted);line-height:1.75}
    .icon{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,rgba(109,94,252,.15),rgba(36,199,197,.16));display:grid;place-items:center;font-size:22px}
    .strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .strip .chip{background:#fff}
    .panel{padding:24px}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{padding:20px;border-radius:18px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid #e4ebfa;position:relative}
    .step b{display:inline-flex;width:34px;height:34px;border-radius:12px;align-items:center;justify-content:center;background:#edf2ff;color:#31457d;margin-bottom:12px}
    .step h3{margin:0 0 8px;font-size:17px}
    .compare{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:820px}
    th,td{padding:16px;border-bottom:1px solid #e6ecfa;text-align:left;vertical-align:top}
    th{background:#f4f7ff;color:#24314a;font-size:14px}
    td{font-size:14px;color:#39465f}
    tr:hover td{background:#fbfcff}
    .score{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .score-badge{min-width:180px;padding:18px;border-radius:20px;background:linear-gradient(135deg,#fff8ef,#fff);border:1px solid #ffe1bf}
    .score-badge strong{display:block;font-size:28px;color:#e26a1b}
    .faq{display:grid;gap:12px}
    .faq-item{padding:18px 20px}
    .faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer}
    .faq-q h3{margin:0;font-size:16px}
    .faq-toggle{width:28px;height:28px;border-radius:50%;background:#edf2ff;color:#3150a5;display:grid;place-items:center;flex:0 0 auto}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;margin-top:0}
    .faq-item.active .faq-a{max-height:160px;margin-top:10px}
    .faq-item.active .faq-toggle{transform:rotate(45deg)}
    .reviews,.articles,.cases,.network,.form-wrap,.price-grid,.timeline-grid{display:grid;gap:18px}
    .review{padding:20px}
    .review .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .stars{color:#ffb400;letter-spacing:1px}
    .article,.case{padding:20px}
    .article time{display:block;color:#8190a9;font-size:13px;margin-top:10px}
    .form-wrap{grid-template-columns:1.05fr .95fr;align-items:start}
    form{display:grid;gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#2a3750}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid #dbe3f3;background:#fff;color:var(--text);outline:none;font:inherit;
    }
    textarea{min-height:132px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#93a7ff;box-shadow:0 0 0 4px rgba(109,94,252,.09)}
    .footer{padding:28px 0 34px;border-top:1px solid rgba(220,228,244,.9);background:#f9fbff;color:#22304b}
    .footer a{color:#224b9b}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px}
    .foot-mini{font-size:13px;color:#64728d;line-height:1.8}
    .home-link{font-weight:700}
    .floating{position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px}
    .floating a,.floating button{width:50px;height:50px;border-radius:16px;border:1px solid rgba(220,228,244,.9);background:#fff;box-shadow:var(--shadow-soft);display:grid;place-items:center;cursor:pointer}
    .floating .top{display:none}
    .mobile-panel{display:none}
    .img-box{border-radius:18px;overflow:hidden;border:1px solid #e2e8f5;background:#fff}
    .timeline-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
    .timeline-card{padding:18px;border-radius:18px;border:1px solid #e3eafb;background:#fff}
    .price-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
    .price-card{padding:22px}
    .price-card strong{font-size:28px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #e1e8fb;color:#44506c;font-size:13px}
    .toc{display:flex;flex-wrap:wrap;gap:10px}
    .toc a{font-size:13px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #e1e8fb;color:#41506d}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.form-wrap,.footer-grid,.steps,.timeline-grid,.price-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .nav-links,.nav-actions{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:block;max-height:0;overflow:hidden;transition:max-height .28s ease}
      .mobile-panel.open{max-height:520px}
      .mobile-panel .box{padding:14px 0 18px;display:grid;gap:10px}
      .mobile-panel a{padding:11px 12px;border-radius:12px;background:#fff;border:1px solid var(--line)}
    }
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}