:root{
      --bg:#f6f7fb;
      --bg2:#eef2ff;
      --card:#ffffff;
      --line:#dde3f0;
      --text:#152033;
      --muted:#5b667a;
      --brand:#4f67ff;
      --brand2:#7c4dff;
      --accent:#00a3a3;
      --warm:#ffb84d;
      --shadow:0 18px 50px rgba(32,47,87,.10);
      --shadow2:0 10px 24px rgba(32,47,87,.08);
      --radius:20px;
      --radius2:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 10%, rgba(124,77,255,.11), transparent 26%),
        radial-gradient(circle at 88% 12%, rgba(0,163,163,.12), transparent 22%),
        linear-gradient(180deg, #fbfcff 0%, #f4f6fb 42%, #f7f8fc 100%);
      line-height:1.65;
    }
    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:blur(16px);
      background:rgba(247,248,252,.84);
      border-bottom:1px solid rgba(221,227,240,.8);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:18px;
      padding:14px 0;
    }
    .brand{display:flex; align-items:center; gap:12px; min-width:0}
    .brand img{width:42px; height:42px; object-fit:contain}
    .brand-text{min-width:0}
    .brand-text strong{display:block; font-size:18px; letter-spacing:.3px}
    .brand-text span{display:block; color:var(--muted); font-size:12px}
    .nav-toggle{
      display:none; border:1px solid var(--line); background:#fff; color:var(--text);
      border-radius:12px; padding:10px 12px; cursor:pointer;
      box-shadow:var(--shadow2);
    }
    .nav-links{
      display:flex; align-items:center; gap:6px; flex-wrap:wrap; justify-content:flex-end;
    }
    .nav-links a{
      padding:9px 12px; border-radius:999px; color:#344055; font-size:14px;
      transition:.25s ease;
    }
    .nav-links a:hover{background:#edf1ff; color:#24335b}
    .nav-cta{
      display:inline-flex; align-items:center; justify-content:center;
      padding:10px 16px; border-radius:999px;
      background:linear-gradient(135deg, var(--brand), var(--brand2));
      color:#fff; font-weight:700; box-shadow:0 10px 24px rgba(79,103,255,.24);
      white-space:nowrap;
    }
    .hero{
      padding:42px 0 24px;
      position:relative;
      overflow:hidden;
    }
    .hero-grid{
      display:grid; grid-template-columns:1.2fr .8fr; gap:22px; align-items:stretch;
    }
    .hero-main, .hero-side, .section-card, .quote-card, .faq-item, .form-card, .panel{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(221,227,240,.9);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:30px}
    .eyebrow{
      display:inline-flex; align-items:center; gap:8px; padding:7px 12px;
      border-radius:999px; background:linear-gradient(135deg, rgba(79,103,255,.10), rgba(0,163,163,.10));
      color:#2f4cb2; font-size:13px; font-weight:700;
    }
    h1{margin:16px 0 14px; font-size:clamp(30px,5vw,52px); line-height:1.12}
    .lead{color:var(--muted); font-size:16px; max-width:58ch}
    .hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin:24px 0 18px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center; gap:8px;
      padding:12px 18px; border-radius:14px; border:1px solid transparent; cursor:pointer;
      font-weight:700; transition:.25s ease;
    }
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand2)); color:#fff; box-shadow:0 12px 26px rgba(79,103,255,.22)}
    .btn-ghost{background:#fff; color:var(--text); border-color:var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:18px}
    .mini{
      padding:14px; border-radius:16px; background:#f9fbff; border:1px solid #e7ecf7;
    }
    .mini strong{display:block; font-size:18px}
    .mini span{display:block; color:var(--muted); font-size:13px}
    .hero-side{padding:20px; display:grid; gap:14px}
    .stat-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
    .stat{padding:16px; border-radius:16px; background:linear-gradient(180deg, #ffffff, #f7f9ff); border:1px solid #e7ecf7}
    .stat b{display:block; font-size:22px}
    .stat small{color:var(--muted)}
    .side-card{
      padding:16px; border-radius:16px; background:linear-gradient(135deg, rgba(79,103,255,.08), rgba(255,184,77,.10));
      border:1px solid rgba(79,103,255,.12);
    }
    .section{padding:22px 0}
    .section-header{display:flex; align-items:end; justify-content:space-between; gap:16px; margin-bottom:16px}
    .section-header h2{margin:0; font-size:clamp(22px,3.4vw,32px)}
    .section-header p{margin:0; color:var(--muted); max-width:68ch}
    .grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .grid-4{display:grid; grid-template-columns:repeat(4,1fr); gap:16px}
    .card{padding:18px; border-radius:18px; background:rgba(255,255,255,.9); border:1px solid #e4e9f5; box-shadow:var(--shadow2); transition:.25s ease}
    .card:hover{transform:translateY(-4px); box-shadow:var(--shadow)}
    .card h3{margin:0 0 8px; font-size:18px}
    .card p{margin:0; color:var(--muted)}
    .tag-cloud{display:flex; flex-wrap:wrap; gap:10px}
    .tag{padding:9px 12px; border-radius:999px; background:#fff; border:1px solid #e4e9f5; color:#334055; font-size:13px}
    .media-showcase{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .media-showcase img{width:100%; border-radius:18px; aspect-ratio: 4 / 3; object-fit:cover; border:1px solid #e4e9f5; box-shadow:var(--shadow2)}
    .list-clean{margin:0; padding:0; list-style:none}
    .list-clean li{padding:10px 0; border-bottom:1px dashed #e5e9f3; color:#334055}
    .list-clean li:last-child{border-bottom:none}
    .steps{display:grid; grid-template-columns:repeat(4,1fr); gap:14px}
    .step{padding:18px; border-radius:18px; background:#fff; border:1px solid #e4e9f5; position:relative}
    .step b{display:inline-flex; width:30px; height:30px; align-items:center; justify-content:center; border-radius:10px; background:#edf1ff; color:#3850d1; margin-bottom:10px}
    .compare-wrap{overflow:auto; border-radius:18px; border:1px solid #e4e9f5; background:#fff; box-shadow:var(--shadow2)}
    table{width:100%; border-collapse:collapse; min-width:760px}
    th,td{padding:14px 16px; border-bottom:1px solid #edf1f7; text-align:left; vertical-align:top}
    th{background:#f7f9ff; color:#24335b}
    .badge{display:inline-flex; padding:5px 10px; border-radius:999px; background:#edf7ff; color:#1461a3; font-size:12px; font-weight:700}
    .quote-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
    .quote{padding:18px}
    .quote .name{margin-top:12px; font-weight:700}
    .quote .role{color:var(--muted); font-size:13px}
    .faq{display:grid; gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%; background:none; border:0; text-align:left; padding:18px; cursor:pointer;
      font-size:16px; font-weight:700; color:var(--text); display:flex; justify-content:space-between; gap:12px;
    }
    .faq-a{max-height:0; overflow:hidden; transition:max-height .28s ease; color:var(--muted); padding:0 18px}
    .faq-item.open .faq-a{max-height:180px; padding-bottom:18px}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .faq-q span{transition:.2s ease; color:var(--brand); font-size:22px; line-height:1}
    .form-grid{display:grid; grid-template-columns:1fr 1fr; gap:14px}
    .field{display:flex; flex-direction:column; gap:8px}
    .field label{font-size:14px; font-weight:700}
    .field input,.field select,.field textarea{
      width:100%; padding:12px 14px; border-radius:14px; border:1px solid #dbe2ef; background:#fff;
      font:inherit; color:var(--text); outline:none;
    }
    .field textarea{min-height:120px; resize:vertical}
    .field.full{grid-column:1 / -1}
    .submit-row{display:flex; flex-wrap:wrap; gap:12px; align-items:center; justify-content:space-between; margin-top:8px}
    .notes{color:var(--muted); font-size:13px}
    .footer{
      margin-top:16px; padding:22px 0 30px; border-top:1px solid rgba(221,227,240,.9);
      background:#f7f8fc; color:#304059;
    }
    .footer-grid{display:grid; grid-template-columns:1.2fr .8fr; gap:18px}
    .footer a{color:#263f8e}
    .footer .small{color:#5b667a; font-size:13px}
    .floating{
      position:fixed; right:16px; bottom:18px; z-index:60; display:grid; gap:10px;
    }
    .float-btn{
      width:52px; height:52px; border-radius:50%; display:flex; align-items:center; justify-content:center;
      background:linear-gradient(135deg, var(--brand), var(--accent)); color:#fff; box-shadow:var(--shadow);
      border:0; cursor:pointer;
    }
    .kefu{
      position:fixed; left:16px; bottom:16px; z-index:60;
      width:min(160px, calc(100vw - 32px));
      padding:12px; border-radius:18px; background:#fff; border:1px solid #e4e9f5; box-shadow:var(--shadow);
    }
    .kefu strong{display:block; margin-bottom:8px}
    .kefu img{width:100%; border-radius:14px; border:1px solid #edf1f7}
    .scroll-reveal{opacity:0; transform:translateY(18px); transition:.6s ease}
    .scroll-reveal.show{opacity:1; transform:none}
    .article-list{display:grid; gap:10px}
    .article-item{
      display:flex; justify-content:space-between; gap:12px; padding:14px 16px; border-radius:16px; background:#fff; border:1px solid #e4e9f5;
    }
    .article-item span{color:var(--muted); font-size:13px; white-space:nowrap}
    .strip{
      display:grid; grid-template-columns:1fr 1fr; gap:16px;
    }
    .pricing{
      display:grid; grid-template-columns:repeat(3,1fr); gap:16px;
    }
    .price-card{
      padding:18px; border-radius:18px; background:#fff; border:1px solid #e4e9f5;
    }
    .price-card strong{font-size:28px}
    .price-card .sub{color:var(--muted); font-size:13px}
    .anchor-space{scroll-margin-top:92px}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.steps,.quote-grid,.footer-grid,.strip,.pricing,.media-showcase{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none; width:100%; padding:10px 0 2px; justify-content:flex-start
      }
      .nav-links.open{display:flex}
      .nav{flex-wrap:wrap}
    }
    @media (max-width: 680px){
      .container{width:min(var(--container), calc(100% - 24px))}
      .hero{padding-top:24px}
      .hero-main,.hero-side,.card,.step,.quote,.price-card{padding:16px}
      .hero-grid,.grid-4,.grid-3,.steps,.quote-grid,.footer-grid,.strip,.pricing,.media-showcase,.form-grid{grid-template-columns:1fr}
      .section-header{flex-direction:column; align-items:flex-start}
      .submit-row{flex-direction:column; align-items:flex-start}
      .kefu{display:none}
    }