:root{
      --bg:#fffaf4;
      --bg2:#f7fbff;
      --card:#ffffff;
      --text:#203047;
      --muted:#5c6b7f;
      --line:#e8e1d8;
      --primary:#ff7d5c;
      --primary2:#5b8cff;
      --accent:#24b3a6;
      --warm:#ffcf6a;
      --shadow:0 16px 40px rgba(54,73,94,.10);
      --radius:22px;
      --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",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(91,140,255,.10), transparent 32%),
        radial-gradient(circle at 90% 10%, rgba(255,125,92,.12), transparent 28%),
        linear-gradient(180deg, var(--bg), #ffffff 35%, var(--bg2));
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:40;
      backdrop-filter: blur(14px);
      background: rgba(255,250,244,.82);
      border-bottom:1px solid rgba(232,225,216,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 6px 18px rgba(0,0,0,.08)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:16px;letter-spacing:.4px}
    .brand-text span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a,.nav-links button{
      border:1px solid transparent;
      background:transparent;color:var(--text);
      padding:9px 12px;border-radius:999px;font-size:14px;cursor:pointer;
      transition:.2s ease;
    }
    .nav-links a:hover,.nav-links button:hover{background:#fff;border-color:var(--line);box-shadow:0 8px 24px rgba(54,73,94,.08);transform:translateY(-1px)}
    .nav-cta{background:linear-gradient(135deg,var(--primary),#ff9f68)!important;color:#fff!important;box-shadow:0 10px 24px rgba(255,125,92,.22)}
    .menu-btn{display:none}
    .hero{padding:34px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.table-card,.faq-item,.quote,.form-card,.timeline,.case-card,.news-card,.pricing{
      background:rgba(255,255,255,.84);border:1px solid rgba(232,225,216,.9);border-radius:var(--radius);box-shadow:var(--shadow)
    }
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{
      content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none
    }
    .hero-main:before{width:220px;height:220px;background:rgba(91,140,255,.12);right:-50px;top:-50px}
    .hero-main:after{width:180px;height:180px;background:rgba(255,125,92,.12);right:90px;bottom:-60px}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:16px}
    .badge{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--muted);font-size:13px}
    h1{margin:0 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08}
    .lead{margin:0 0 20px;color:var(--muted);font-size:16px;line-height:1.8;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 16px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;border:1px solid transparent;font-weight:600;
      transition:.2s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),#ff9962);color:#fff;box-shadow:0 14px 28px rgba(255,125,92,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .point{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff, #fff8f4);border:1px solid #f1e5d8
    }
    .point strong{display:block;font-size:18px;margin-bottom:4px}
    .point span{color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{padding:22px}
    .mini-stat{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .stat{
      padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f9fbff);border:1px solid var(--line)
    }
    .stat b{display:block;font-size:22px;margin-bottom:6px}
    .stat small{color:var(--muted);line-height:1.5}
    .hero-side .summary{margin-top:14px;padding:16px;border-radius:18px;background:linear-gradient(135deg, rgba(91,140,255,.08), rgba(255,125,92,.08));border:1px solid rgba(91,140,255,.12)}
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:clamp(22px,2.7vw,34px)}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card{padding:20px}
    .card h3,.panel h3,.case-card h3,.news-card h3{margin:0 0 10px;font-size:18px}
    .card p,.panel p,.case-card p,.news-card p,.quote p{margin:0;color:var(--muted);line-height:1.75}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:12px;
      background:linear-gradient(135deg, rgba(255,125,92,.16), rgba(91,140,255,.16));color:#324866;font-weight:700
    }
    .pill-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#415063;font-size:13px}
    .steps{counter-reset:step}
    .step{position:relative;padding-left:60px}
    .step:before{
      counter-increment:step;content:counter(step);position:absolute;left:18px;top:18px;width:30px;height:30px;border-radius:50%;
      background:linear-gradient(135deg,var(--primary2),#86afff);color:#fff;display:grid;place-items:center;font-weight:700
    }
    .comparison{
      width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:18px
    }
    .comparison th,.comparison td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    .comparison th{background:#f8fbff;font-size:14px}
    .comparison tr:last-child td{border-bottom:none}
    .rating{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
    .stars{color:#ffb400;font-size:20px;letter-spacing:2px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;text-align:left;padding:18px 18px;border:0;background:transparent;color:var(--text);
      display:flex;justify-content:space-between;gap:14px;align-items:center;font-size:16px;font-weight:600;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease,padding .28s ease;border-top:1px solid transparent}
    .faq-a p{margin:0;padding:0 18px 18px;color:var(--muted);line-height:1.75}
    .faq-item.open .faq-a{max-height:220px;border-top-color:var(--line)}
    .faq-item.open .faq-a p{padding-top:14px}
    .review{display:grid;gap:10px}
    .review .meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:13px}
    .review .name{font-weight:700;color:var(--text)}
    .review .tag{font-size:12px;padding:6px 10px;border-radius:999px;background:#f3f7ff;color:#4a6286}
    .case-card{padding:18px}
    .case-card .cover{
      border-radius:16px;padding:16px;background:linear-gradient(135deg,#fff5ef,#f1f7ff);border:1px dashed #e8dacf;margin-bottom:12px
    }
    .news-list{display:grid;gap:12px}
    .news-card{padding:18px}
    .news-card .row{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:8px}
    .form-card{padding:22px}
    form{display:grid;gap:12px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:grid;gap:8px;font-size:14px;color:var(--text);font-weight:600}
    input,select,textarea{
      width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:#fff;color:var(--text);
      font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#9ab7ff;box-shadow:0 0 0 4px rgba(91,140,255,.12)}
    textarea{min-height:120px;resize:vertical}
    .submit-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
    .fine{color:var(--muted);font-size:13px;line-height:1.6}
    .footer{
      margin-top:10px;padding:24px 0 30px;border-top:1px solid rgba(232,225,216,.9);
      color:#314155;background:linear-gradient(180deg, rgba(255,255,255,.55), rgba(248,250,255,.75))
    }
    .footer a{color:#244a8f}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    .contact-list{display:grid;gap:10px;color:#405266}
    .contact-list div{padding:10px 0;border-bottom:1px dashed #e7e0d6}
    .contact-list div:last-child{border-bottom:none}
    .social-links{display:flex;flex-wrap:wrap;gap:10px}
    .social-links a{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line)}
    .float{
      position:fixed;right:18px;bottom:18px;z-index:50;display:grid;gap:10px
    }
    .float a,.float button{
      width:50px;height:50px;border-radius:16px;border:0;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--primary),#ff9d63);color:#fff;box-shadow:0 12px 28px rgba(255,125,92,.24);cursor:pointer
    }
    .backtop{display:none}
    .mobile-only{display:none}
    .marquee{
      overflow:auto hidden;white-space:nowrap;padding-bottom:2px
    }
    .marquee .pill{display:inline-flex;margin-right:10px}
    .table-wrap{overflow:auto}
    .anchor-space{scroll-margin-top:90px}
    .muted{color:var(--muted)}
    .promo-images{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .promo-images img{width:100%;border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow)}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.footer-grid,.promo-images{grid-template-columns:1fr}
      .hero-points,.form-grid{grid-template-columns:1fr 1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{
        display:flex;position:absolute;left:16px;right:16px;top:72px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
      }
      .nav{position:relative}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero-main,.hero-side,.card,.panel,.table-card,.faq-item,.quote,.form-card,.case-card,.news-card{border-radius:18px}
      .hero-main{padding:22px}
      .hero-points,.form-grid,.mini-stat{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .mobile-only{display:block}
      .desktop-only{display:none}
      h1{font-size:28px}
      .btn{width:100%}
      .hero-actions{display:grid}
    }
    @keyframes rise{
      from{opacity:0;transform:translateY(14px)}
      to{opacity:1;transform:translateY(0)}
    }
    .reveal{animation:rise .6s ease both}
    .reveal.delay1{animation-delay:.08s}
    .reveal.delay2{animation-delay:.16s}
    .reveal.delay3{animation-delay:.24s}