:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f9fbff;
      --text:#172033;
      --muted:#5f6b86;
      --line:#dce5f1;
      --brand:#2b6bff;
      --brand-2:#7a5cff;
      --accent:#14b8a6;
      --gold:#ffb547;
      --shadow:0 18px 50px rgba(31,53,104,.10);
      --shadow-soft:0 10px 28px rgba(31,53,104,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(43,107,255,.12), transparent 26%),
        radial-gradient(circle at 85% 8%, rgba(122,92,255,.12), transparent 20%),
        linear-gradient(180deg,#fbfcff 0%, #f5f8fd 100%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:1000;
      backdrop-filter:blur(16px);
      background:rgba(248,250,255,.84);
      border-bottom:1px solid rgba(220,229,241,.82);
    }
    .topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .mark{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;box-shadow:var(--shadow-soft);overflow:hidden;flex:none}
    .brand .mark img{width:32px;height:32px;object-fit:contain}
    .brand .text{min-width:0}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:4px 0 0;color:var(--muted);font-size:12px}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:var(--text);padding:8px 0;position:relative}
    .nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:.25s}
    .nav a:hover::after{width:100%}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:none;border-radius:999px;padding:12px 18px;font-weight:700;
      transition:.25s ease;cursor:pointer
    }
    .btn-primary{color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 12px 26px rgba(43,107,255,.26)}
    .btn-primary:hover,.btn-ghost:hover{transform:translateY(-2px)}
    .btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
    .hero{padding:28px 0 14px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-panel,.card,.section-box,.faq-item,.testimonial,.article,.compare,.form-box,.timeline,.tagbox{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(220,229,241,.9);
      box-shadow:var(--shadow-soft);
      border-radius:var(--radius);
    }
    .hero-panel{padding:32px;position:relative;overflow:hidden}
    .hero-panel::before,.hero-panel::after{
      content:"";position:absolute;border-radius:50%;filter:blur(8px);pointer-events:none
    }
    .hero-panel::before{width:260px;height:260px;background:radial-gradient(circle, rgba(43,107,255,.16), transparent 60%);right:-80px;top:-80px}
    .hero-panel::after{width:180px;height:180px;background:radial-gradient(circle, rgba(20,184,166,.12), transparent 62%);left:-50px;bottom:-70px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(43,107,255,.09);color:#2353c8;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(30px,4.6vw,54px);line-height:1.06;letter-spacing:-.02em}
    .hero-panel p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:26px}
    .mini{
      background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line);border-radius:18px;padding:14px
    }
    .mini strong{display:block;font-size:18px;margin-bottom:6px}
    .mini span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-side{display:grid;gap:14px}
    .side-visual{padding:24px;background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(245,248,253,.96));position:relative;overflow:hidden}
    .side-visual .grid{
      display:grid;grid-template-columns:1fr 1fr;gap:12px
    }
    .stat{
      padding:16px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .stat b{display:block;font-size:22px}
    .stat small{display:block;margin-top:6px;color:var(--muted);line-height:1.5}
    .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .badge{padding:8px 12px;border-radius:999px;background:linear-gradient(135deg,rgba(43,107,255,.09),rgba(122,92,255,.09));color:#25429d;font-size:12px;font-weight:700}
    .logo-box{padding:18px;display:flex;align-items:center;justify-content:center;min-height:180px}
    .logo-box img{max-height:130px;object-fit:contain}
    section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:26px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:66ch;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .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{margin:0 0 8px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.7}
    .icon{
      width:44px;height:44px;border-radius:14px;
      background:linear-gradient(135deg,rgba(43,107,255,.14),rgba(20,184,166,.14));
      display:grid;place-items:center;margin-bottom:14px;font-size:20px
    }
    .list{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .list li{display:flex;gap:10px;align-items:flex-start}
    .list li::before{content:"";width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));margin-top:9px;flex:none}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;position:relative}
    .step .num{
      width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:800;margin-bottom:12px
    }
    .compare{overflow:hidden}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f4f8ff;color:#21325d;font-size:14px}
    td{color:var(--muted)}
    .score{font-weight:800;color:#0f4cc9}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;background:none;border:none;padding:18px 20px;text-align:left;
      font-size:16px;font-weight:700;color:var(--text);display:flex;align-items:center;justify-content:space-between;gap:14px;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-a p{margin:0 0 18px;color:var(--muted);line-height:1.75}
    .faq-item.open .faq-a{max-height:180px}
    .faq-item.open .chev{transform:rotate(180deg)}
    .chev{transition:.25s ease;color:var(--brand)}
    .testimonial .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
    .avatar{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,rgba(43,107,255,.16),rgba(122,92,255,.14));display:grid;place-items:center;font-weight:800;color:#234}
    .rating{color:#f59e0b;font-size:14px;letter-spacing:1px}
    .articles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .article time{display:block;color:#7c879f;font-size:13px;margin-bottom:10px}
    .article h3{margin:0 0 8px;font-size:17px}
    .article a.more{display:inline-flex;margin-top:10px;color:#225ae4;font-weight:700}
    .cloud{display:flex;flex-wrap:wrap;gap:10px}
    .cloud span{padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:#415173;font-size:13px}
    .timeline{padding:20px}
    .timeline ul{margin:0;padding:0;list-style:none;display:grid;gap:14px}
    .timeline li{display:grid;grid-template-columns:90px 1fr;gap:12px;padding-bottom:14px;border-bottom:1px dashed var(--line)}
    .timeline li:last-child{border-bottom:none;padding-bottom:0}
    .timeline .t{font-weight:800;color:#264ab1}
    .form-box form{display:grid;gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#2a3550}
    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
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(43,107,255,.5);box-shadow:0 0 0 4px rgba(43,107,255,.08)}
    textarea{min-height:124px;resize:vertical}
    .contact-row{display:grid;grid-template-columns:1fr .9fr;gap:14px;align-items:start}
    .footer{
      margin-top:22px;
      padding:26px 0 34px;
      border-top:1px solid rgba(220,229,241,.9);
      background:linear-gradient(180deg,#f8fbff,#eef3fb);
      color:#20304f;
    }
    .footer a{color:#214fd0}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px}
    .footer h3{margin:0 0 12px;font-size:16px}
    .footer p,.footer li{color:#54637f;line-height:1.7}
    .footer ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .footer .copy{margin-top:16px;padding-top:16px;border-top:1px solid rgba(220,229,241,.9);font-size:13px;color:#6a7692}
    .fixed-contact{
      position:fixed;right:16px;bottom:16px;z-index:1100;display:grid;gap:10px
    }
    .fixed-contact a{
      width:52px;height:52px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand-2));
      color:#fff;display:grid;place-items:center;box-shadow:0 14px 32px rgba(43,107,255,.24);font-weight:800
    }
    .backtop{position:fixed;right:16px;bottom:80px;z-index:1100;border:none;width:52px;height:52px;border-radius:18px;background:#fff;color:var(--text);box-shadow:var(--shadow-soft);display:none}
    .fade-up{opacity:0;transform:translateY(18px);transition:.7s ease}
    .fade-up.in{opacity:1;transform:none}
    .hero-image-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .small-note{font-size:13px;color:var(--muted)}
    .service-net{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
    .service-net span{padding:12px 10px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:16px;color:#42516f}
    .tagbox{padding:18px}
    .section-box{padding:20px}
    .inline-link{color:#225ae4;font-weight:700}
    .home-link-wrap{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
    .ai-page-logo,.ai-page-image{border-radius:12px}
    @media (max-width: 1100px){
      .hero-grid,.contact-row,.footer-grid,.grid-4,.grid-3,.articles,.service-net,.workflow{grid-template-columns:repeat(2,1fr)}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav{display:none;flex-direction:column;align-items:flex-start;gap:8px;padding:14px 0 4px}
      .nav.open{display:flex}
      .topbar{flex-wrap:wrap}
      .hero-grid,.contact-row,.footer-grid,.grid-4,.grid-3,.articles,.service-net,.workflow,.grid-2{grid-template-columns:1fr}
      .hero-panel{padding:22px}
      .hero-points{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .timeline li{grid-template-columns:1fr}
      .fixed-contact,.backtop{right:12px}
    }