:root{
      --bg:#f6f7fb;
      --bg2:#eef2ff;
      --card:#ffffff;
      --text:#192233;
      --muted:#5f6b7f;
      --line:#e4e8f1;
      --primary:#5b5cf6;
      --accent:#ff4d8d;
      --accent2:#00b8a9;
      --warm:#ffb703;
      --shadow:0 16px 50px rgba(31, 41, 55, .10);
      --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",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 10% 10%, rgba(91,92,246,.10), transparent 24%),
        radial-gradient(circle at 90% 10%, rgba(255,77,141,.10), transparent 22%),
        linear-gradient(180deg, #fbfcff 0%, var(--bg) 100%);
      line-height:1.7;
    }
    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:60;
      backdrop-filter:blur(18px);
      background:rgba(251,252,255,.84);
      border-bottom:1px solid rgba(228,232,241,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:74px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand strong{display:block;font-size:1.02rem;letter-spacing:.4px}
    .brand span{display:block;font-size:.82rem;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:.95rem;color:#243042;opacity:.88}
    .nav-links a:hover{color:var(--primary)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .menu-btn,.btn{
      border:0;border-radius:999px;cursor:pointer;
      transition:.25s ease;
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      font-weight:700;
    }
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;color:var(--text)}
    .btn{padding:13px 18px}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#7a5cff);color:#fff;box-shadow:0 12px 24px rgba(91,92,246,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(91,92,246,.28)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#cfd6e5}
    .hero{
      padding:56px 0 28px;
      overflow:hidden;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.panel,.faq-item,.quote,.price-box,.article,.review,.compare{
      background:var(--card);border:1px solid rgba(228,232,241,.88);box-shadow:var(--shadow)
    }
    .hero-main{border-radius:30px;padding:34px;position:relative;overflow:hidden}
    .hero-main::before{
      content:"";position:absolute;inset:auto -80px -80px auto;width:240px;height:240px;border-radius:50%;
      background:radial-gradient(circle, rgba(255,77,141,.18), transparent 70%);
      pointer-events:none;
    }
    .hero-main::after{
      content:"";position:absolute;left:-60px;top:-60px;width:180px;height:180px;border-radius:50%;
      background:radial-gradient(circle, rgba(91,92,246,.14), transparent 68%);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;
      background:rgba(91,92,246,.08);color:#3643af;font-size:.88rem;font-weight:700;
    }
    h1{margin:16px 0 14px;font-size:clamp(2rem,4vw,3.6rem);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:1.05rem;color:var(--muted);max-width:44rem}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px}
    .stat{
      padding:16px 14px;border-radius:18px;background:linear-gradient(180deg,#fff, #f8faff);
      border:1px solid var(--line)
    }
    .stat strong{display:block;font-size:1.15rem}
    .stat span{display:block;color:var(--muted);font-size:.88rem}
    .hero-side{border-radius:30px;padding:22px;background:
      linear-gradient(180deg, rgba(91,92,246,.08), rgba(255,77,141,.05) 56%, #fff 100%)}
    .side-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
    .side-top h2{margin:0;font-size:1.15rem}
    .badge{padding:7px 10px;border-radius:999px;background:#fff;color:#e11d48;font-weight:700;font-size:.84rem;border:1px solid #ffd2df}
    .side-list{display:grid;gap:12px;margin:18px 0 0;padding:0;list-style:none}
    .side-list li{padding:14px 14px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .side-list b{display:block;margin-bottom:4px}
    .section{padding:18px 0}
    .section-card{border-radius:28px;padding:28px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-head h2{margin:0;font-size:1.7rem}
    .section-head p{margin:0;color:var(--muted);max-width:55rem}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .feature,.service,.case,.review,.article,.timeline,.panel,.price-box,.compare,.quote,.faq-item{border-radius:22px;padding:20px}
    .feature h3,.service h3,.case h3,.review h3,.article h3,.panel h3{margin:0 0 8px;font-size:1.08rem}
    .feature p,.service p,.case p,.review p,.article p,.panel p{margin:0;color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span,.mini-tag{
      padding:9px 12px;border-radius:999px;background:#f4f6ff;border:1px solid #e1e6ff;color:#334155;font-size:.92rem
    }
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:18px;border-radius:22px;background:linear-gradient(180deg,#fff, #fbfcff);border:1px solid var(--line)}
    .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(--accent));color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow-x:auto}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff;border-radius:18px;overflow:hidden}
    th,td{padding:14px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f7f8ff}
    tr:hover td{background:#fcfdff}
    .rating{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:stretch
    }
    .score-box{
      border-radius:22px;padding:22px;background:linear-gradient(135deg, rgba(91,92,246,.10), rgba(255,77,141,.08));
      border:1px solid #e7e8ff
    }
    .score{font-size:2.4rem;font-weight:900;line-height:1;margin:8px 0}
    .stars{color:#f59e0b;letter-spacing:2px;font-size:1.1rem}
    details.faq-item{padding:0;overflow:hidden}
    details summary{
      list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;display:flex;justify-content:space-between;gap:12px;align-items:center
    }
    details summary::-webkit-details-marker{display:none}
    details .faq-content{padding:0 20px 18px;color:var(--muted)}
    .reviews .review,.articles .article,.services .service,.cases .case{height:100%}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    label{display:block;font-size:.92rem;font-weight:700;margin-bottom:8px}
    input,select,textarea{
      width:100%;border:1px solid #dbe2ee;background:#fff;border-radius:16px;padding:13px 14px;font:inherit;color:var(--text);outline:none;
      transition:.2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(91,92,246,.55);box-shadow:0 0 0 4px rgba(91,92,246,.08)}
    .full{grid-column:1/-1}
    .footer{
      margin-top:18px;padding:28px 0 34px;border-top:1px solid rgba(228,232,241,.9);
      background:linear-gradient(180deg, rgba(255,255,255,.92), rgba(248,250,255,.96))
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer a{color:#243042}
    .footer a:hover{color:var(--primary)}
    .contact-pill{
      display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;margin:6px 8px 0 0
    }
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:70;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:18px;border:0;cursor:pointer;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;
      box-shadow:0 14px 28px rgba(91,92,246,.28)
    }
    .float-link{
      display:flex;align-items:center;justify-content:center;padding:12px 14px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);font-weight:700;color:var(--text)
    }
    .mobile-panel{display:none}
    .fade-in{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease}
    .fade-in.in-view{opacity:1;transform:none}
    .hover-lift{transition:transform .25s ease, box-shadow .25s ease}
    .hover-lift:hover{transform:translateY(-4px);box-shadow:0 20px 40px rgba(31,41,55,.12)}
    @media (max-width: 1080px){
      .hero-grid,.rating,.footer-grid,.grid-3,.grid-2,.workflow{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 820px){
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel{display:none;padding:0 0 16px}
      .mobile-panel.open{display:block}
      .mobile-panel a{display:block;padding:12px 0;border-top:1px solid rgba(228,232,241,.8);color:#243042}
      .hero-grid,.rating,.footer-grid,.grid-3,.grid-2,.workflow,.hero-stats,.form-grid{grid-template-columns:1fr}
      .hero-main,.hero-side,.section-card{padding:22px;border-radius:24px}
      h1{font-size:clamp(1.8rem,8vw,2.8rem)}
      .section-head{flex-direction:column;align-items:flex-start}
      .nav{min-height:68px}
    }
    @media (max-width: 520px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero{padding-top:24px}
      .btn{width:100%}
      .hero-actions{display:grid}
      .nav-actions{gap:8px}
      .brand span{display:none}
      .hero-main::before,.hero-main::after{display:none}
      .floating{right:12px;bottom:12px}
    }