:root{
      --bg:#f6f9fc;
      --bg2:#eef5ff;
      --card:#ffffff;
      --line:#d9e4f2;
      --text:#122033;
      --muted:#5d6b7d;
      --brand:#1677ff;
      --brand2:#00b8a9;
      --brand3:#ffb020;
      --shadow:0 18px 40px rgba(16,39,66,.08);
      --radius:20px;
    }
    *{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:
      radial-gradient(circle at top left, rgba(22,119,255,.12), transparent 28%),
      radial-gradient(circle at 80% 10%, rgba(0,184,169,.10), transparent 25%),
      linear-gradient(180deg, #fff 0%, var(--bg) 18%, #f8fbff 100%);
      line-height:1.7}
    a{color:var(--brand);text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(1180px, calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.85);backdrop-filter:blur(16px);border-bottom:1px solid rgba(217,228,242,.8)}
    .topbar{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:44px;height:44px;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px}
    .brand b{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{color:var(--text);font-size:14px;opacity:.88}
    .nav a:hover{color:var(--brand)}
    .nav-actions{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;cursor:pointer;transition:.25s ease;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#4e9cff);color:#fff;box-shadow:0 12px 28px rgba(22,119,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(22,119,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b9c9dc;transform:translateY(-1px)}
    .menu-btn{display:none}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.panel,.review,.article,.price,.form-card{background:rgba(255,255,255,.9);border:1px solid rgba(217,228,242,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg, rgba(22,119,255,.12), rgba(0,184,169,.12));border:1px solid rgba(22,119,255,.15);color:#184c9f;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:17px;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini-stat{padding:14px 14px 16px;border-radius:16px;background:linear-gradient(180deg,#fff, #f7fbff);border:1px solid var(--line)}
    .mini-stat strong{display:block;font-size:22px}
    .mini-stat span{font-size:13px;color:var(--muted)}
    .hero-side{padding:22px;background:linear-gradient(180deg, rgba(22,119,255,.06), rgba(255,255,255,.94))}
    .side-list{display:grid;gap:12px}
    .side-item{padding:14px 14px 14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .side-item b{display:block;margin-bottom:4px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:14px;margin:8px 0 16px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted)}
    .section-card{padding:22px}
    .feature{padding:18px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,#fff, #fbfdff);transition:.25s ease}
    .feature:hover,.review:hover,.article:hover,.price:hover{transform:translateY(-3px);box-shadow:0 18px 36px rgba(16,39,66,.10)}
    .feature h3,.review h3,.article h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted)}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--line)}
    .step b{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;margin-bottom:12px}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:15px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f4f8fe}
    .rating{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .score-box{padding:22px;border-radius:18px;background:linear-gradient(135deg, #0d67ea, #22b8aa);color:#fff}
    .score-box small{opacity:.9}
    .score-box .big{font-size:48px;font-weight:800;line-height:1}
    details{border:1px solid var(--line);border-radius:16px;background:#fff;overflow:hidden}
    details+details{margin-top:12px}
    summary{cursor:pointer;list-style:none;padding:16px 18px;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details .answer{padding:0 18px 16px;color:var(--muted)}
    .reviews,.articles,.prices,.services{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review,.article,.price{padding:18px}
    .price .num{font-size:30px;font-weight:800;color:var(--brand)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .form-card{padding:22px}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);font:inherit}
    textarea{min-height:120px;resize:vertical}
    label{display:block;font-size:14px;font-weight:700;margin:0 0 8px}
    .full{grid-column:1/-1}
    .footer-links{display:flex;flex-wrap:wrap;gap:14px}
    footer{margin-top:24px;padding:22px 0 34px;background:#0f1d33;color:#dce8f8}
    footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer-grid .box{padding:18px;border:1px solid rgba(255,255,255,.12);border-radius:18px;background:rgba(255,255,255,.04)}
    .floating{position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px}
    .float-btn{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .kefu{position:fixed;left:16px;bottom:16px;z-index:50;max-width:170px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:var(--shadow)}
    .kefu p{margin:8px 0 0;font-size:12px;color:var(--muted)}
    .anchor-title{scroll-margin-top:92px}
    .img-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .img-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff}
    .img-card img{width:100%;height:auto}
    .scroll-x{overflow:auto}
    .nav-mobile{display:none}
    .appear{opacity:0;transform:translateY(14px);transition:.55s ease}
    .appear.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.timeline,.reviews,.articles,.prices,.services,.rating,.footer-grid,.img-row{grid-template-columns:1fr}
      .hero-points,.form-grid{grid-template-columns:1fr 1fr}
      .nav{display:none}
      .menu-btn{display:inline-flex}
      .nav-mobile{display:none;padding:0 0 14px}
      .nav-mobile.open{display:block}
      .nav-mobile .panel{padding:14px;border-radius:18px}
      .nav-mobile a{display:block;padding:10px 0;border-bottom:1px dashed var(--line);color:var(--text)}
      .nav-mobile a:last-child{border-bottom:none}
      .kefu{max-width:140px}
    }
    @media (max-width: 640px){
      .container{width:min(100% - 20px, 1180px)}
      .hero-main,.hero-side,.section-card,.panel,.review,.article,.price,.form-card{padding:18px}
      h1{font-size:30px}
      .hero-points,.form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .kefu{display:none}
      .floating{right:12px;bottom:12px}
    }