:root{
      --bg:#f6f8fc;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#1d2433;
      --muted:#5f6b82;
      --line:#dfe6f2;
      --primary:#3c67ff;
      --primary2:#6f42ff;
      --accent:#15b8a6;
      --warm:#ffb24d;
      --shadow:0 14px 40px rgba(20,37,74,.08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(60,103,255,.11), transparent 28%),
        radial-gradient(circle at top right, rgba(111,66,255,.10), transparent 24%),
        linear-gradient(180deg, #fff 0%, var(--bg) 18%, #f7f9fd 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:50;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(246,248,252,.84);
      border-bottom:1px solid rgba(223,230,242,.9);
    }
    .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}
    .ai-page-logo{width:42px; height:42px; object-fit:contain; border-radius:12px; background:#fff; padding:4px; box-shadow:0 8px 24px rgba(16,32,64,.08)}
    .brand-text{display:flex; flex-direction:column; line-height:1.1}
    .brand-text strong{font-size:16px; letter-spacing:.2px}
    .brand-text span{font-size:12px; color:var(--muted); margin-top:4px}
    .nav-toggle{display:none; border:1px solid var(--line); background:#fff; color:var(--text); border-radius:12px; padding:10px 12px}
    .nav-links{display:flex; align-items:center; gap:18px; flex-wrap:wrap}
    .nav-links a{font-size:14px; color:#334155; padding:8px 0; position:relative}
    .nav-links a::after{content:""; position:absolute; left:0; bottom:2px; width:0; height:2px; border-radius:999px; background:linear-gradient(90deg,var(--primary),var(--primary2)); transition:.25s}
    .nav-links a:hover::after,.nav-links a:focus::after{width:100%}
    .hero{padding:34px 0 26px}
    .hero-grid{display:grid; grid-template-columns:1.35fr .95fr; gap:22px; align-items:stretch}
    .hero-main,.hero-side,.section-card,.faq-item,.review-card,.article-card,.price-card,.step-card,.service-card,.case-card,.match-card,.compare-card,.info-card,.contact-card,.table-card{
      background:rgba(255,255,255,.94); border:1px solid rgba(223,230,242,.95); 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:999px; filter:blur(6px); pointer-events:none}
    .hero-main::before{width:220px;height:220px; right:-70px; top:-60px; background:radial-gradient(circle, rgba(60,103,255,.18), transparent 66%)}
    .hero-main::after{width:180px;height:180px; left:-60px; bottom:-70px; background:radial-gradient(circle, rgba(21,184,166,.15), transparent 68%)}
    .eyebrow{display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px; background:linear-gradient(135deg, rgba(60,103,255,.11), rgba(111,66,255,.10)); color:#2440a5; font-size:13px; font-weight:700}
    h1{margin:16px 0 12px; font-size:clamp(30px, 4vw, 54px); line-height:1.08; letter-spacing:-.03em}
    .hero-main p{margin:0; color:var(--muted); font-size:16px; line-height:1.8; max-width:62ch}
    .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin:24px 0 20px}
    .btn{display:inline-flex; align-items:center; justify-content:center; gap:8px; min-height:46px; padding:0 18px; border-radius:14px; font-weight:700; border:1px solid transparent; transition:.2s ease; cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2)); color:#fff; box-shadow:0 12px 28px rgba(60,103,255,.25)}
    .btn-secondary{background:#fff; border-color:var(--line); color:var(--text)}
    .btn:hover{transform:translateY(-1px); box-shadow:0 14px 24px rgba(18,32,60,.10)}
    .hero-pills{display:flex; flex-wrap:wrap; gap:10px}
    .pill{padding:10px 12px; border-radius:999px; background:#f3f6ff; color:#2f3c63; border:1px solid #dfe7ff; font-size:13px}
    .hero-side{padding:22px; display:grid; gap:14px}
    .mini-stat{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px}
    .stat{padding:16px; border-radius:18px; background:linear-gradient(180deg,#fff, #f7f9ff); border:1px solid var(--line)}
    .stat strong{display:block; font-size:22px; margin-bottom:6px}
    .stat span{font-size:13px; color:var(--muted); line-height:1.5}
    .side-note{padding:16px; border-radius:18px; background:linear-gradient(135deg, rgba(60,103,255,.08), rgba(21,184,166,.08)); border:1px solid rgba(60,103,255,.12)}
    .side-note h3{margin:0 0 8px; font-size:16px}
    .side-note p{margin:0; color:var(--muted); font-size:14px; line-height:1.75}
    .section{padding:14px 0 8px}
    .section-head{display:flex; justify-content:space-between; align-items:end; gap:14px; margin:14px 0 16px}
    .section-head h2{margin:0; font-size:clamp(22px, 2.5vw, 34px)}
    .section-head p{margin:0; color:var(--muted); max-width:62ch; line-height:1.75}
    .grid-3{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px}
    .grid-4{display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:16px}
    .card{padding:22px}
    .card h3{margin:12px 0 10px; font-size:18px}
    .card p,.card li{color:var(--muted); line-height:1.75}
    .icon-badge{width:44px;height:44px;border-radius:14px; display:grid; place-items:center; background:linear-gradient(135deg, rgba(60,103,255,.12), rgba(111,66,255,.10)); color:#3453d0; font-weight:800}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:10px 12px; border:1px solid var(--line); background:#fff; border-radius:12px; color:#3f4b63; font-size:13px}
    .table-wrap{overflow:auto; border-radius:18px}
    table{width:100%; border-collapse:separate; border-spacing:0; min-width:760px; background:#fff}
    th,td{padding:14px 16px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top; font-size:14px}
    th{background:#f7f9ff; color:#273249; font-size:13px; letter-spacing:.02em}
    tr:last-child td{border-bottom:none}
    .table-note{padding:16px 18px; border-top:1px solid var(--line); color:var(--muted); font-size:14px; line-height:1.7}
    .split{display:grid; grid-template-columns:1.02fr .98fr; gap:16px; align-items:start}
    .timeline{display:grid; gap:12px}
    .timeline-item{display:grid; grid-template-columns:46px 1fr; gap:12px; padding:16px; border:1px solid var(--line); border-radius:18px; background:#fff}
    .timeline-num{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg, var(--primary), var(--primary2)); color:#fff; display:grid; place-items:center; font-weight:800}
    .timeline-item h3{margin:0 0 6px; font-size:16px}
    .timeline-item p{margin:0; color:var(--muted); line-height:1.7}
    .faq{display:grid; gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px; background:#fff; border:none; padding:18px 20px; text-align:left; font-size:16px; font-weight:700; color:var(--text); cursor:pointer}
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; border-top:1px solid transparent}
    .faq-a p{margin:0; padding:0 20px 18px; color:var(--muted); line-height:1.8}
    .faq-item.active .faq-a{max-height:180px; border-top-color:var(--line)}
    .faq-item.active .faq-q .chev{transform:rotate(180deg)}
    .chev{transition:transform .25s ease}
    .reviews,.articles,.cases,.prices{display:grid; gap:16px}
    .review-card blockquote{margin:0; color:var(--text); line-height:1.85}
    .review-meta{margin-top:14px; display:flex; justify-content:space-between; gap:12px; color:var(--muted); font-size:13px}
    .article-card,.case-card,.price-card{padding:20px}
    .article-card a,.case-card a{color:#2440a5; font-weight:700}
    .price-row{display:flex; justify-content:space-between; gap:12px; align-items:center; padding:12px 0; border-bottom:1px dashed var(--line)}
    .price-row:last-child{border-bottom:none}
    .price-row strong{font-size:15px}
    .price-row span{color:var(--muted); font-size:13px}
    form{display:grid; gap:12px}
    .form-grid{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px}
    input,select,textarea{
      width:100%; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:14px; padding:13px 14px; font:inherit; outline:none; transition:.2s
    }
    textarea{min-height:120px; resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(60,103,255,.55); box-shadow:0 0 0 4px rgba(60,103,255,.08)}
    .submit-row{display:flex; gap:12px; flex-wrap:wrap; align-items:center}
    .small{font-size:13px; color:var(--muted); line-height:1.7}
    .footer{
      margin-top:14px; padding:24px 0 28px;
      background:#eef3fb; border-top:1px solid var(--line);
      color:#1f2a3f;
    }
    .footer a{color:#2440a5}
    .footer-grid{display:grid; grid-template-columns:1.1fr .9fr; gap:16px}
    .footer-box{padding:18px; border-radius:18px; background:#fff; border:1px solid var(--line)}
    .footer-links{display:flex; flex-wrap:wrap; gap:12px}
    .floating{
      position:fixed; right:16px; bottom:16px; z-index:60;
      display:grid; gap:10px;
    }
    .float-btn{
      width:54px; height:54px; border-radius:16px; display:grid; place-items:center;
      background:linear-gradient(135deg,var(--primary),var(--primary2)); color:#fff; box-shadow:0 14px 26px rgba(60,103,255,.28);
      border:none; cursor:pointer
    }
    .float-panel{
      width:min(340px, calc(100vw - 32px));
      background:#fff; border:1px solid var(--line); box-shadow:var(--shadow); border-radius:18px; padding:14px; display:none
    }
    .floating.open .float-panel{display:block}
    .float-panel h3{margin:4px 0 10px; font-size:16px}
    .float-panel p{margin:0 0 10px; color:var(--muted); line-height:1.7; font-size:14px}
    .float-qr{width:118px; border-radius:14px; overflow:hidden; border:1px solid var(--line)}
    .toplink{display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:999px; background:#fff; border:1px solid var(--line)}
    .reveal{opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease}
    .reveal.in{opacity:1; transform:none}
    .image-row{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px}
    .media-card{overflow:hidden; border-radius:20px; border:1px solid var(--line); background:#fff}
    .media-card img{width:100%; height:auto}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.split,.footer-grid,.grid-4,.grid-3{grid-template-columns:1fr}
      .section-head{flex-direction:column; align-items:flex-start}
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none; position:absolute; left:16px; right:16px; top:74px;
        flex-direction:column; align-items:flex-start; gap:10px; background:#fff; border:1px solid var(--line);
        border-radius:18px; padding:14px; box-shadow:var(--shadow)
      }
      .nav-links.open{display:flex}
      .nav{position:relative}
      .form-grid,.image-row{grid-template-columns:1fr}
      .mobile-only{display:block}
    }