:root{
      --bg:#f6f7fb;
      --panel:#ffffff;
      --panel2:#fbfcff;
      --text:#172033;
      --muted:#5f6b85;
      --line:#e4e9f3;
      --brand:#4f7cff;
      --brand2:#7c5cff;
      --brand3:#ff7a59;
      --accent:#17b8a6;
      --shadow:0 18px 40px rgba(31,47,91,.08);
      --shadow2:0 10px 26px rgba(31,47,91,.10);
      --radius:22px;
      --radius2:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(79,124,255,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(255,122,89,.10), transparent 24%),
        linear-gradient(180deg,#fbfcff 0%, #f6f7fb 28%, #f4f6fb 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:30;
      backdrop-filter: blur(14px);
      background:rgba(251,252,255,.82);
      border-bottom:1px solid rgba(228,233,243,.9);
    }
    .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 .ai-page-logo{width:46px; height:46px; object-fit:contain; border-radius:12px; background:#fff; box-shadow:0 8px 20px rgba(31,47,91,.08)}
    .brand-text{min-width:0}
    .brand-text strong{display:block; font-size:18px; line-height:1.1}
    .brand-text span{display:block; font-size:12px; color:var(--muted); margin-top:3px}
    .nav-toggle{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      padding:10px 12px; border-radius:12px; box-shadow:0 6px 16px rgba(31,47,91,.05);
    }
    .nav{
      display:flex; align-items:center; gap:18px; flex-wrap:wrap;
    }
    .nav a{
      font-size:14px; color:var(--muted); padding:8px 10px; border-radius:10px; transition:.22s ease;
    }
    .nav a:hover,.nav a:focus{color:var(--text); background:rgba(79,124,255,.08)}
    .header-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:12px 18px;
      font-weight:700; font-size:14px; transition:.25s ease; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{
      color:#fff; background:linear-gradient(135deg,var(--brand),var(--brand2));
      box-shadow:0 14px 28px rgba(79,124,255,.22);
    }
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 18px 34px rgba(79,124,255,.28)}
    .btn-ghost{color:var(--text); background:#fff; border-color:var(--line)}
    .btn-ghost:hover{transform:translateY(-2px); box-shadow:var(--shadow2)}
    .hero{
      padding:34px 0 18px;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.18fr .82fr; gap:22px; align-items:stretch;
    }
    .hero-card{
      position:relative; overflow:hidden;
      background:
        linear-gradient(135deg, rgba(79,124,255,.96), rgba(124,92,255,.94) 52%, rgba(23,184,166,.92));
      color:#fff;
      border-radius:28px;
      padding:34px;
      box-shadow:var(--shadow);
    }
    .hero-card::before,.hero-card::after{
      content:""; position:absolute; border-radius:50%; pointer-events:none;
      background:rgba(255,255,255,.10); filter:blur(2px);
      animation: floaty 8s ease-in-out infinite;
    }
    .hero-card::before{width:190px;height:190px;right:-60px;top:-50px}
    .hero-card::after{width:120px;height:120px;left:34px;bottom:-42px;animation-duration:10s}
    @keyframes floaty{50%{transform:translateY(-10px) translateX(6px)}}
    .hero-kicker{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 12px; border-radius:999px; background:rgba(255,255,255,.14);
      font-size:13px; letter-spacing:.2px; margin-bottom:14px;
    }
    .hero h1{margin:0; font-size:clamp(32px, 5vw, 56px); line-height:1.06; letter-spacing:-.03em}
    .hero p{margin:16px 0 0; max-width:720px; color:rgba(255,255,255,.92); font-size:16px; line-height:1.9}
    .hero-points{
      display:flex; flex-wrap:wrap; gap:10px; margin:22px 0 26px;
    }
    .chip{
      padding:9px 12px; border-radius:999px; background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16); font-size:13px;
    }
    .hero-actions{display:flex; flex-wrap:wrap; gap:12px}
    .hero-actions .btn{padding:13px 20px}
    .hero-actions .btn-ghost{background:rgba(255,255,255,.95); color:#1b2550}
    .hero-side{
      display:grid; gap:16px;
    }
    .mini-panel{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(228,233,243,.95);
      border-radius:24px;
      padding:20px;
      box-shadow:var(--shadow2);
    }
    .mini-panel h2,.section-title h2{margin:0; font-size:28px; line-height:1.18}
    .mini-panel p{margin:10px 0 0; color:var(--muted); line-height:1.8}
    .stats{
      display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:14px;
    }
    .stat{
      background:linear-gradient(180deg,#fff,#f7f9ff);
      border:1px solid var(--line); border-radius:18px; padding:16px 14px;
    }
    .stat strong{display:block; font-size:24px; line-height:1; margin-bottom:6px}
    .stat span{font-size:13px; color:var(--muted); line-height:1.45}
    .trust{
      display:grid; gap:12px;
    }
    .trust-item{
      display:flex; gap:12px; align-items:flex-start;
      background:#fff; border:1px solid var(--line); border-radius:18px; padding:14px 15px;
    }
    .trust-item i{
      width:30px; height:30px; border-radius:10px; background:linear-gradient(135deg, rgba(79,124,255,.12), rgba(255,122,89,.12));
      display:inline-flex; align-items:center; justify-content:center; font-style:normal; color:var(--brand); font-weight:800;
      flex:0 0 auto;
    }
    section{padding:18px 0}
    .section-title{
      display:flex; align-items:flex-end; justify-content:space-between; gap:16px; margin-bottom:16px;
    }
    .section-title p{margin:0; color:var(--muted); line-height:1.8; max-width:720px}
    .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{
      background:rgba(255,255,255,.92);
      border:1px solid rgba(228,233,243,.96);
      border-radius:22px;
      padding:22px;
      box-shadow:0 10px 28px rgba(31,47,91,.05);
      transition:.24s ease;
    }
    .card:hover{transform:translateY(-4px); box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px; font-size:18px}
    .card p{margin:0; color:var(--muted); line-height:1.8}
    .icon-badge{
      width:48px; height:48px; border-radius:16px;
      display:flex; align-items:center; justify-content:center;
      font-size:22px; margin-bottom:14px;
      background:linear-gradient(135deg, rgba(79,124,255,.12), rgba(23,184,166,.12));
    }
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{
      padding:9px 12px; border-radius:999px; background:#fff; border:1px solid var(--line);
      color:#34415f; font-size:13px;
    }
    .process{
      display:grid; grid-template-columns:repeat(4,1fr); gap:14px;
    }
    .step{
      position:relative; overflow:hidden;
      padding:22px; border-radius:22px; background:linear-gradient(180deg,#fff,#fbfcff); border:1px solid var(--line);
    }
    .step .no{
      width:40px; height:40px; border-radius:50%; background:linear-gradient(135deg,var(--brand),var(--brand2));
      color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800; margin-bottom:12px;
    }
    .step h3{margin:0 0 8px; font-size:18px}
    .step p{margin:0; color:var(--muted); line-height:1.8}
    .table-wrap{
      overflow:auto; border:1px solid var(--line); border-radius:22px; background:#fff; box-shadow:var(--shadow2);
    }
    table{width:100%; border-collapse:collapse; min-width:860px}
    th,td{padding:16px 14px; text-align:left; border-bottom:1px solid var(--line); vertical-align:top}
    th{background:#f8faff; font-size:14px}
    td{color:#33415e; line-height:1.75}
    .price-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:14px; align-items:stretch}
    .price-box{padding:24px; border-radius:22px; background:linear-gradient(180deg,#fff,#fafbff); border:1px solid var(--line)}
    .price-box .big{
      font-size:38px; line-height:1; font-weight:900; margin:10px 0 8px;
      background:linear-gradient(135deg,var(--brand),var(--brand3)); -webkit-background-clip:text; background-clip:text; color:transparent;
    }
    .price-list{display:grid; gap:10px; margin-top:16px}
    .price-row{
      display:flex; justify-content:space-between; gap:12px; padding:12px 14px; background:#fff; border:1px solid var(--line); border-radius:14px;
      font-size:14px;
    }
    .faq{display:grid; gap:12px}
    .faq-item{
      border:1px solid var(--line); border-radius:18px; background:#fff; overflow:hidden;
    }
    .faq-q{
      width:100%; text-align:left; background:none; border:0; padding:18px 18px; font-size:16px; font-weight:700; color:var(--text);
      display:flex; align-items:center; justify-content:space-between; gap:12px; cursor:pointer;
    }
    .faq-q span{color:var(--brand); font-weight:800}
    .faq-a{
      max-height:0; overflow:hidden; transition:max-height .28s ease; padding:0 18px;
    }
    .faq-item.open .faq-a{max-height:160px; padding-bottom:18px}
    .faq-a p{margin:0; color:var(--muted); line-height:1.8}
    .reviews,.articles{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
    .review{
      padding:22px; border-radius:22px; background:#fff; border:1px solid var(--line)
    }
    .review .meta{display:flex; justify-content:space-between; gap:10px; margin-bottom:12px}
    .review strong{display:block}
    .stars{color:#ffb400; letter-spacing:1px}
    .case{
      display:grid; grid-template-columns:1fr 1fr; gap:14px; align-items:stretch;
    }
    .case-media{
      display:grid; grid-template-columns:1fr 1fr; gap:12px;
    }
    .case-media img{
      width:100%; border-radius:18px; border:1px solid var(--line); object-fit:cover; background:#fff;
    }
    .case-copy ul,.checklist{margin:14px 0 0; padding:0; list-style:none; display:grid; gap:10px}
    .case-copy li,.checklist li{
      padding-left:22px; position:relative; color:var(--muted); line-height:1.7
    }
    .case-copy li::before,.checklist li::before{
      content:"•"; position:absolute; left:4px; color:var(--brand); font-weight:900
    }
    .article{
      padding:20px; border-radius:22px; background:#fff; border:1px solid var(--line)
    }
    .article .meta{display:flex; justify-content:space-between; gap:10px; color:var(--muted); font-size:13px; margin-bottom:10px}
    .article h3{margin:0 0 10px; font-size:18px}
    .article p{margin:0; color:var(--muted); line-height:1.8}
    .timeline{
      display:grid; gap:12px;
    }
    .time-item{
      display:grid; grid-template-columns:86px 1fr; gap:14px; align-items:start;
      padding:18px; border-radius:20px; background:#fff; border:1px solid var(--line)
    }
    .time-item strong{
      display:inline-flex; align-items:center; justify-content:center; padding:10px 12px; border-radius:999px;
      background:linear-gradient(135deg, rgba(79,124,255,.12), rgba(124,92,255,.12)); color:#3041aa;
    }
    .time-item p{margin:0; color:var(--muted); line-height:1.8}
    .form-grid{display:grid; grid-template-columns:1fr .9fr; gap:14px}
    form{
      padding:22px; border-radius:22px; background:#fff; border:1px solid var(--line); box-shadow:var(--shadow2)
    }
    .fields{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .field{display:grid; gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px; font-weight:700; color:#2b3550}
    input,select,textarea{
      width:100%; border:1px solid var(--line); background:#fbfcff; color:var(--text);
      border-radius:14px; padding:13px 14px; font:inherit; outline:none; transition:.2s ease;
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(79,124,255,.65); box-shadow:0 0 0 4px rgba(79,124,255,.08)}
    textarea{min-height:132px; resize:vertical}
    .form-note{
      padding:22px; border-radius:22px; background:linear-gradient(180deg,#fff,#fbfcff); border:1px solid var(--line)
    }
    .form-note .qr{
      display:flex; align-items:center; gap:14px; margin-top:14px;
    }
    .form-note img{width:112px; height:112px; object-fit:cover; border-radius:18px; border:1px solid var(--line); background:#fff}
    .footer{
      margin-top:10px; padding:26px 0 28px;
      border-top:1px solid var(--line);
      background:#f7f9ff;
      color:#22304e;
    }
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr .9fr; gap:14px}
    .footer h3{margin:0 0 12px; font-size:18px}
    .footer p,.footer a{color:#41506f; line-height:1.8}
    .footer-links{display:flex; flex-wrap:wrap; gap:10px}
    .footer-links a,.quick-links a{
      padding:8px 11px; border-radius:999px; background:#fff; border:1px solid var(--line); color:#33415e; font-size:13px
    }
    .subfooter{margin-top:16px; padding-top:14px; border-top:1px solid var(--line); color:#5e6a84; font-size:13px}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:40; display:grid; gap:10px;
    }
    .float-btn{
      width:48px; height:48px; border-radius:50%;
      display:flex; align-items:center; justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2)); color:#fff; box-shadow:var(--shadow2);
      border:0; cursor:pointer;
    }
    .float-link{
      display:flex; align-items:center; justify-content:center;
      width:48px; height:48px; border-radius:50%; background:#fff; border:1px solid var(--line); box-shadow:var(--shadow2);
      font-size:18px;
    }
    .reveal{opacity:0; transform:translateY(14px); transition:.7s ease}
    .reveal.in{opacity:1; transform:none}
    .mobile-nav{
      display:none; padding:0 0 14px;
    }
    .mobile-nav .nav{
      padding:12px; background:#fff; border:1px solid var(--line); border-radius:18px;
    }
    .mobile-nav .nav a{background:#f7f9ff}
    .sronly{position:absolute; left:-9999px}
    @media (max-width: 1024px){
      .hero-grid,.price-grid,.form-grid,.case,.footer-grid,.grid-4,.process,.reviews,.articles,.grid-3,.grid-2{grid-template-columns:1fr 1fr}
      .case{grid-template-columns:1fr}
      .case-media{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .nav-toggle{display:inline-flex}
      .nav-desktop{display:none}
      .mobile-nav.show{display:block}
      .hero-grid,.price-grid,.form-grid,.footer-grid,.grid-4,.process,.reviews,.articles,.grid-3,.grid-2,.case,.stats{grid-template-columns:1fr}
      .hero-card{padding:24px}
      .hero{padding-top:18px}
      .section-title{align-items:flex-start; flex-direction:column}
      .fields{grid-template-columns:1fr}
      .time-item{grid-template-columns:1fr}
      .case-media{grid-template-columns:1fr 1fr}
      .stats{grid-template-columns:1fr 1fr 1fr}
      .header-actions .btn-ghost{display:none}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *,*::before,*::after{animation:none !important; transition:none !important}
    }