:root{
      --bg:#f6f8fc;
      --surface:#ffffff;
      --surface-2:#f2f6ff;
      --line:#dbe4f2;
      --text:#1c2430;
      --muted:#5f6b7a;
      --brand:#2f6bff;
      --brand2:#15c7b8;
      --accent:#ff8a3d;
      --shadow:0 18px 40px rgba(24, 50, 96, .08);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,-apple-system,sans-serif;
      color:var(--text);
      background:
        radial-gradient(1200px 600px at 10% 0%, rgba(47,107,255,.10), transparent 45%),
        radial-gradient(900px 500px at 90% 8%, rgba(21,199,184,.10), transparent 35%),
        linear-gradient(180deg, #f9fbff 0%, #f5f8fe 38%, #f7f9fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px, var(--container));margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(14px);
      background:rgba(246,248,252,.78);
      border-bottom:1px solid rgba(219,228,242,.8);
    }
    .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 img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .navlinks{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .navlinks a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s ease}
    .navlinks a:hover,.navlinks a.active{color:var(--text);background:rgba(47,107,255,.08)}
    .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:14px;padding:12px 18px;
      font-weight:700;transition:.22s ease;cursor:pointer;white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#5d7cff);color:#fff;box-shadow:0 14px 28px rgba(47,107,255,.26)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(47,107,255,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn-ghost:hover{border-color:#b8c7e6;transform:translateY(-2px)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);width:44px;height:44px;border-radius:14px}
    .menu-toggle span{display:block;width:18px;height:2px;background:var(--text);margin:4px auto;border-radius:2px}
    main{display:block}
    section{padding:66px 0}
    .hero{padding:32px 0 52px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-copy,.hero-panel,.card,.info-box,.faq-item,.review,.case,.article,.compare,.form-card{
      background:rgba(255,255,255,.9);border:1px solid rgba(219,228,242,.9);box-shadow:var(--shadow);border-radius:var(--radius);
    }
    .hero-copy{padding:34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:#2957d8;background:rgba(47,107,255,.08);padding:8px 12px;border-radius:999px;font-weight:700}
    h1{font-size:clamp(32px,5vw,56px);line-height:1.05;margin:16px 0 14px}
    .lead{font-size:17px;line-height:1.8;color:var(--muted);max-width:42rem}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:24px 0 20px}
    .hero-highlights{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini-stat{padding:16px;background:linear-gradient(180deg,#f7fbff,#eef5ff);border:1px solid #dce8fb;border-radius:18px}
    .mini-stat strong{display:block;font-size:22px}
    .mini-stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted);line-height:1.5}
    .hero-panel{padding:22px;display:grid;gap:14px;align-content:start;background:
      linear-gradient(180deg, rgba(255,255,255,.96), rgba(245,249,255,.96));
    }
    .panel-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
    .panel-badge{font-size:12px;font-weight:700;color:#0d7a6f;background:rgba(21,199,184,.12);padding:8px 10px;border-radius:999px}
    .platform-tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#304153}
    .panel-list{display:grid;gap:10px}
    .panel-item{display:flex;gap:10px;align-items:flex-start;padding:12px 14px;border-radius:16px;background:var(--surface-2);border:1px solid #dbe7ff}
    .panel-item b{display:block;margin-bottom:4px}
    .panel-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:24px}
    .section-head h2{font-size:clamp(24px,3vw,36px);margin:0}
    .section-head p{margin:0;color:var(--muted);max-width:58ch;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{padding:22px;transition:.22s ease}
    .card:hover,.review:hover,.case:hover,.article:hover{transform:translateY(-4px)}
    .metric strong{display:block;font-size:28px;margin-bottom:8px}
    .metric span{color:var(--muted);line-height:1.6;font-size:14px}
    .service h3,.case h3,.review h3,.article h3{margin:0 0 10px;font-size:18px}
    .service p,.case p,.review p,.article p{margin:0;color:var(--muted);line-height:1.7}
    .icon{
      width:46px;height:46px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(47,107,255,.12),rgba(21,199,184,.12));
      margin-bottom:14px;color:#2151c9;font-weight:800
    }
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{position:relative}
    .step::after{content:"";position:absolute;right:-8px;top:28px;width:16px;height:2px;background:linear-gradient(90deg,var(--brand),transparent)}
    .step:last-child::after{display:none}
    .step .num{display:inline-flex;width:30px;height:30px;border-radius:999px;background:var(--brand);color:#fff;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px}
    .comparison-wrap{overflow-x:auto;border-radius:var(--radius)}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:760px;background:#fff}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
    th{background:#f5f8ff;color:#234;position:sticky;top:0}
    .compare .rating{display:flex;gap:6px;color:#f39c12;font-size:18px}
    .badge-good{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(21,199,184,.12);color:#0c756b;font-weight:700;font-size:12px}
    .badge-warn{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,138,61,.12);color:#af5310;font-weight:700;font-size:12px}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:start;padding:18px;background:#fff;border:1px solid var(--line);border-radius:18px}
    .timeline-item time{font-weight:800;color:var(--brand)}
    .faq{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;border:0;background:transparent;padding:18px 20px;text-align:left;display:flex;justify-content:space-between;gap:12px;
      font-size:16px;font-weight:700;color:var(--text);cursor:pointer
    }
    .faq-a{padding:0 20px 18px;color:var(--muted);line-height:1.8;display:none}
    .faq-item.open .faq-a{display:block}
    .reviews,.cases,.articles,.tags-cloud{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review small{display:block;margin-top:12px;color:#738095}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud a{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#304153;font-size:13px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:grid;gap:8px}
    label{font-size:14px;font-weight:700;color:#2a3645}
    input,select,textarea{
      width:100%;border:1px solid #cfd9ea;background:#fff;color:var(--text);border-radius:14px;padding:13px 14px;
      font:inherit;outline:none;transition:.2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#87a8ff;box-shadow:0 0 0 4px rgba(47,107,255,.10)}
    .form-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:6px}
    .footer{
      padding:28px 0 34px;background:#eef3fb;border-top:1px solid #dbe4f2;color:#223;
    }
    .footer a{color:#234eaf}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px;align-items:start}
    .footer p,.footer li{color:#4f5d6d;line-height:1.8}
    .footer ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .float-box{
      position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--brand),#5d7cff);color:#fff;
      display:grid;place-items:center;box-shadow:0 14px 28px rgba(47,107,255,.28)
    }
    .kefu-pop{
      position:absolute;right:0;bottom:62px;width:240px;background:#fff;border:1px solid var(--line);border-radius:18px;
      box-shadow:var(--shadow);padding:14px;display:none
    }
    .kefu-pop img{border-radius:12px}
    .float-box:hover .kefu-pop{display:block}
    .scroll-top{border:0;cursor:pointer}
    .mobile-only{display:none}
    .content-images{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .content-images img{border-radius:18px;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
    .center-note{padding:18px 20px;border-radius:18px;background:linear-gradient(135deg,rgba(47,107,255,.08),rgba(21,199,184,.08));border:1px solid #d8e5fb;color:#324154;line-height:1.75}
    .anchor{scroll-margin-top:90px}
    @media (max-width: 1024px){
      .hero-grid,.grid-4,.grid-3,.reviews,.cases,.articles,.footer-grid,.flow,.timeline-item,.grid-2{grid-template-columns:1fr 1fr}
      .hero-highlights{grid-template-columns:1fr}
      .step::after{display:none}
    }
    @media (max-width: 780px){
      .navlinks,.nav-actions{display:none}
      .menu-toggle{display:inline-grid;place-items:center}
      .nav.open .navlinks,.nav.open .nav-actions{
        display:flex;position:absolute;left:16px;right:16px;top:74px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch
      }
      .nav.open .nav-actions{top:184px}
      .hero-grid,.grid-4,.grid-3,.reviews,.cases,.articles,.footer-grid,.flow,.timeline-item,.grid-2,.form-grid,.content-images{grid-template-columns:1fr}
      .hero-copy,.hero-panel{padding:22px}
      section{padding:54px 0}
      .section-head{align-items:start;flex-direction:column}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .hero-actions .btn{width:100%}
      .timeline-item{grid-template-columns:1fr}
      .form-actions .btn{width:100%}
      .comparison-wrap table{min-width:880px}
    }
    [data-reveal]{opacity:0;transform:translateY(16px);transition:.55s ease}
    [data-reveal].in{opacity:1;transform:none}