:root{
      --bg:#f7f5fb;
      --bg2:#ffffff;
      --card:#ffffff;
      --ink:#171826;
      --muted:#60657a;
      --line:rgba(88,46,142,.14);
      --accent:#c23cff;
      --accent2:#ff4fd8;
      --accent3:#5f77ff;
      --shadow:0 18px 50px rgba(62,18,104,.12);
      --shadow2:0 10px 30px rgba(194,60,255,.16);
      --radius:22px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--ink);
      background:
        radial-gradient(circle at 10% 10%, rgba(194,60,255,.10), transparent 28%),
        radial-gradient(circle at 90% 15%, rgba(95,119,255,.10), transparent 25%),
        linear-gradient(180deg, #fefcff 0%, var(--bg) 46%, #fbfaff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:40;
      backdrop-filter:blur(16px);
      background:rgba(255,255,255,.76);
      border-bottom:1px solid rgba(91,44,141,.10);
    }
    .nav{
      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:42px;height:42px;border-radius:12px;object-fit:contain;background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.08);padding:4px}
    .brand strong{display:block;font-size:16px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
    .nav-links a{font-size:14px;color:#2b2c3f;padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:rgba(194,60,255,.08);color:#111}
    .nav-cta{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;cursor:pointer;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
    }
    .btn:hover{transform:translateY(-1px);box-shadow:var(--shadow2)}
    .btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff}
    .btn-ghost{background:#fff;border-color:rgba(194,60,255,.22);color:#222}
    .menu-toggle{display:none;background:#fff;border:1px solid rgba(194,60,255,.18);border-radius:12px;padding:10px 12px}
    .hero{
      padding:42px 0 24px;
      position:relative;
      overflow:hidden;
    }
    .hero-inner{
      display:grid;grid-template-columns:1.12fr .88fr;gap:22px;align-items:stretch;
    }
    .hero-copy,.hero-panel,.card,.section-card,.table-wrap,.faq-item,.review,.timeline li,.article,.price-card,.contact-box{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(194,60,255,.12);
      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:rgba(194,60,255,.10);color:#7a1dc2;font-weight:700;font-size:13px;
    }
    h1{font-size:clamp(34px,5vw,58px);line-height:1.06;margin:16px 0 14px;letter-spacing:-.03em}
    .lead{font-size:17px;line-height:1.85;color:var(--muted);max-width:62ch;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini-stat{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff 0%,#fbf6ff 100%);
      border:1px solid rgba(194,60,255,.10);
    }
    .mini-stat b{display:block;font-size:22px}
    .mini-stat span{display:block;color:var(--muted);font-size:13px;margin-top:4px;line-height:1.5}
    .hero-panel{padding:22px;display:grid;gap:14px}
    .hero-grid{
      display:grid;grid-template-columns:repeat(2,1fr);gap:12px;
    }
    .flash{
      border-radius:20px;padding:18px;min-height:124px;
      background:linear-gradient(135deg, rgba(194,60,255,.13), rgba(95,119,255,.12));
      border:1px solid rgba(194,60,255,.14);
    }
    .flash strong{display:block;font-size:15px}
    .flash p{margin:8px 0 0;color:#40435d;line-height:1.7;font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;background:#fff;border:1px solid rgba(88,46,142,.12);
      color:#35384d;font-size:13px
    }
    section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:62ch}
    .section-card{padding:22px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .feature,.service,.review,.article,.price-card{padding:18px}
    .feature h3,.service h3,.price-card h3,.review h3{margin:0 0 8px;font-size:18px}
    .feature p,.service p,.price-card p,.review p,.article p{margin:0;color:var(--muted);line-height:1.75}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      font-size:12px;font-weight:700;color:#6a1cb8;background:rgba(194,60,255,.10);
      border:1px solid rgba(194,60,255,.12);padding:6px 10px;border-radius:999px;margin-bottom:10px;
    }
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .metric{padding:20px}
    .metric b{display:block;font-size:28px;line-height:1}
    .metric span{display:block;margin-top:8px;color:var(--muted);line-height:1.6}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;position:relative}
    .step .num{font-size:12px;font-weight:800;color:#7c24c9}
    .step h3{margin:10px 0 8px}
    .compare-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden}
    .compare-table th,.compare-table td{
      padding:14px 12px;border-bottom:1px solid rgba(88,46,142,.10);text-align:left;vertical-align:top;font-size:14px
    }
    .compare-table th{background:#fcf8ff;color:#26273a;font-size:13px}
    .compare-table tr:last-child td{border-bottom:none}
    .ok{color:#0f8c55;font-weight:700}
    .warn{color:#a36b00;font-weight:700}
    .table-wrap{padding:0;overflow:auto}
    .table-wrap .inner{min-width:960px}
    .faq-list{display:grid;gap:12px}
    .faq-item summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:18px
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted);line-height:1.8}
    .faq-item[open]{border-color:rgba(194,60,255,.24)}
    .faq-item summary:after{content:"+";font-size:22px;color:#7b1cc5}
    .faq-item[open] summary:after{content:"−"}
    .reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review .role{display:inline-block;margin-bottom:10px;color:#7b1cc5;font-weight:700;font-size:13px}
    .review .stars{color:#f08b00;font-size:16px;letter-spacing:1px;margin-bottom:10px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:16px 18px;display:flex;gap:14px;align-items:flex-start}
    .timeline .dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent3));margin-top:6px;flex:0 0 auto;box-shadow:0 0 0 6px rgba(194,60,255,.10)}
    .timeline b{display:block;margin-bottom:4px}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .article{display:flex;flex-direction:column;gap:10px}
    .article .meta{font-size:12px;color:#7a1dc2;font-weight:700}
    .contact-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:14px}
    form{display:grid;gap:12px}
    .field{display:grid;gap:7px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid rgba(88,46,142,.16);border-radius:14px;
      padding:13px 14px;font:inherit;background:#fff;color:var(--ink);outline:none
    }
    input:focus,select:focus,textarea:focus{border-color:rgba(194,60,255,.52);box-shadow:0 0 0 4px rgba(194,60,255,.10)}
    textarea{min-height:124px;resize:vertical}
    .contact-box{padding:20px}
    .contact-box .qrcode{
      width:180px;max-width:100%;border-radius:18px;border:1px solid rgba(88,46,142,.14);overflow:hidden;background:#fff
    }
    .contact-info{display:grid;gap:10px;margin-top:14px;color:var(--muted);line-height:1.7}
    .footer{
      margin-top:18px;
      padding:28px 0 24px;
      background:#111322;
      color:#eef0ff;
      border-top:1px solid rgba(255,255,255,.08);
    }
    .footer a{color:#ffd6ff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:16px}
    .footer p,.footer li{color:#cfd4ff;line-height:1.8}
    .footer ul{margin:0;padding-left:18px}
    .footer h3{margin:0 0 10px}
    .sub-footer{margin-top:18px;padding-top:14px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:#b8bde4}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;box-shadow:0 14px 30px rgba(194,60,255,.32);
      border:none;cursor:pointer
    }
    .float-panel{
      position:fixed;right:16px;bottom:82px;z-index:50;width:min(92vw,340px);display:none;
      background:#fff;border:1px solid rgba(194,60,255,.16);border-radius:22px;box-shadow:var(--shadow);padding:16px
    }
    .float-panel.show{display:block}
    .float-panel .qr{width:100%;border-radius:18px;overflow:hidden;margin-top:10px;border:1px solid rgba(88,46,142,.12)}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
    .chip{padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.9);border:1px solid rgba(194,60,255,.10);font-size:13px;color:#35384d}
    .scroll-top{position:fixed;right:16px;bottom:150px;z-index:49;display:none}
    .scroll-top.show{display:block}
    .mobile-nav{display:none}
    .light-grid{
      background:
        linear-gradient(to right, rgba(194,60,255,.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(194,60,255,.05) 1px, transparent 1px);
      background-size:38px 38px;
    }
    @media (max-width: 1100px){
      .hero-inner,.contact-wrap,.footer-grid,.grid-4,.metrics,.steps,.reviews-grid,.article-list,.grid-3{grid-template-columns:repeat(2,1fr)}
      .hero-panel{order:-1}
    }
    @media (max-width: 760px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-nav{display:none;padding:0 0 14px}
      .mobile-nav.show{display:block}
      .mobile-nav .panel{
        display:grid;gap:8px;background:#fff;border:1px solid rgba(194,60,255,.12);border-radius:18px;padding:14px
      }
      .mobile-nav a{padding:11px 12px;border-radius:12px;background:#faf7ff}
      .hero-inner,.contact-wrap,.footer-grid,.grid-4,.metrics,.steps,.reviews-grid,.article-list,.grid-3,.hero-points,.hero-grid{grid-template-columns:1fr}
      .hero-copy,.hero-panel,.section-card{padding:18px}
      .section-head{flex-direction:column;align-items:flex-start}
      h1{font-size:clamp(30px,9vw,40px)}
      .lead{font-size:16px}
      .table-wrap .inner{min-width:860px}
      .scroll-top{bottom:138px}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease}
    .reveal.visible{opacity:1;transform:none}