:root{
      --bg:#f7f4ff;
      --bg2:#ffffff;
      --card:#ffffff;
      --text:#1f2330;
      --muted:#5f6474;
      --line:#e7ddff;
      --primary:#7a3cff;
      --primary2:#b34cff;
      --accent:#ff8ae6;
      --shadow:0 18px 50px rgba(98, 48, 190, .10);
      --radius:20px;
      --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:linear-gradient(180deg,#f8f5ff 0%,#ffffff 40%,#f8f5ff 100%);}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container),calc(100% - 32px));margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(247,244,255,.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(122,60,255,.12)}
    .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:40px;height:40px;object-fit:contain;border-radius:12px;background:#fff;padding:6px;box-shadow:0 8px 24px rgba(122,60,255,.12)}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover{background:rgba(122,60,255,.08);color:var(--primary)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:999px;border:1px solid transparent;font-weight:700;transition:.25s;cursor:pointer;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 14px 30px rgba(122,60,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(122,60,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:rgba(122,60,255,.35);color:var(--primary)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:36px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.quote,.faq-item,.form-card,.timeline li,.compare{background:var(--card);border:1px solid rgba(122,60,255,.12);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:30px;position:relative;overflow:hidden;background:
      radial-gradient(circle at top right,rgba(255,138,230,.18),transparent 30%),
      radial-gradient(circle at 20% 15%,rgba(122,60,255,.18),transparent 35%),
      linear-gradient(180deg,#ffffff 0%,#fbf8ff 100%);
    }
    .hero-main::after{content:"";position:absolute;inset:auto -60px -80px auto;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(122,60,255,.20),transparent 68%);filter:blur(8px)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(122,60,255,.08);color:var(--primary);font-weight:700;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{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:24px}
    .mini{padding:14px;border:1px solid rgba(122,60,255,.12);border-radius:16px;background:#fff}
    .mini strong{display:block;font-size:18px}
    .mini span{display:block;margin-top:4px;color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{padding:22px}
    .hero-side .panel{padding:18px;border-radius:18px;box-shadow:none;margin-bottom:14px;background:linear-gradient(180deg,#fff, #faf7ff)}
    .stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .stat{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff, #fbf8ff);border:1px solid rgba(122,60,255,.12)}
    .stat strong{display:block;font-size:28px;color:var(--primary)}
    .stat span{display:block;color:var(--muted);font-size:13px;line-height:1.5}
    section{padding:20px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:14px}
    .section-title h2{margin:0;font-size:28px;line-height:1.2}
    .section-title p{margin:0;color:var(--muted);max-width:62ch}
    .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:10px 0 8px;font-size:18px}
    .card p,.card li,.quote p,.faq-item p,.timeline p,.form-card label{color:var(--muted);line-height:1.7}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:#f5efff;border:1px solid rgba(122,60,255,.10);font-size:13px;color:#4c356f}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;position:relative}
    .step .num{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;font-weight:800}
    .step h3{margin-top:12px}
    .table-wrap{overflow-x:auto;border-radius:var(--radius)}
    table{width:100%;border-collapse:collapse;background:#fff}
    th,td{padding:14px 16px;border-bottom:1px solid #ece4ff;text-align:left;font-size:14px}
    th{background:#faf7ff;color:#34185d}
    .rating{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .stars{color:#ffb703;font-size:22px;letter-spacing:2px}
    .compare-note{padding:16px;border-left:4px solid var(--primary);background:#faf7ff;border-radius:14px}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:18px}
    .timeline strong{display:block;margin-bottom:6px}
    .quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .quote{padding:18px}
    .quote .role{font-size:13px;color:var(--primary);font-weight:700;margin-bottom:10px}
    .faq{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%;border:none;background:transparent;padding:18px;text-align:left;font-size:16px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:18px}
    .faq-item.open .icon{transform:rotate(45deg)}
    .form-card{padding:22px}
    form{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .full{grid-column:1/-1}
    input,select,textarea{width:100%;padding:14px 14px;border:1px solid #dacdff;border-radius:14px;background:#fff;color:var(--text);outline:none;font:inherit}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(122,60,255,.08)}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    footer{margin-top:8px;padding:18px 0 28px;background:#f6f0ff;border-top:1px solid rgba(122,60,255,.12);color:#2a2041}
    footer a{color:#431f87}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:14px;align-items:start}
    .float-box{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-btn{width:54px;height:54px;border-radius:18px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 14px 28px rgba(122,60,255,.24);font-weight:800}
    .back-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s}
    .back-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .fade-in{opacity:0;transform:translateY(16px);transition:opacity .7s ease, transform .7s ease}
    .fade-in.visible{opacity:1;transform:translateY(0)}
    .service-image{border-radius:18px;border:1px solid rgba(122,60,255,.12);overflow:hidden}
    .service-image img{width:100%;height:auto}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-2,.workflow,.quote-grid,.footer-grid{grid-template-columns:1fr}
      .faq{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
      .nav-links.open{display:flex}
      .menu-toggle{display:inline-flex}
      .nav{position:relative}
      form{grid-template-columns:1fr}
    }