:root{
      --bg0:#fbfaf7;
      --bg1:#f6f3ff;
      --card:#ffffff;
      --text:#1f2430;
      --muted:#5a6478;
      --border:rgba(31,36,48,.10);
      --border2:rgba(31,36,48,.14);
      --shadow:0 10px 30px rgba(17,24,39,.08);
      --shadow2:0 16px 45px rgba(17,24,39,.10);
      --primary:#3b5bff;
      --primary2:#7a2cff;
      --accent:#13b6a6;
      --warning:#ff8a3d;
      --success:#18a957;
      --focus:rgba(59,91,255,.22);
      --radius:18px;
      --radius2:26px;
      --container:1120px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC","Hiragino Sans GB","Microsoft YaHei", Arial, sans-serif;
      color:var(--text);
      background:
        radial-gradient(1200px 600px at 20% -10%, rgba(59,91,255,.14), transparent 55%),
        radial-gradient(900px 500px at 85% 0%, rgba(122,44,255,.12), transparent 55%),
        radial-gradient(800px 500px at 20% 50%, rgba(19,182,166,.10), transparent 55%),
        linear-gradient(180deg, var(--bg0), #ffffff 30%, #fbfbfe 100%);
    }
    a{color:inherit}
    .container{
      max-width:var(--container);
      margin:0 auto;
      padding:0 18px;
    }
    .skip-link{
      position:absolute;left:-999px;top:auto;width:1px;height:1px;overflow:hidden;
    }
    .skip-link:focus{
      left:16px;top:16px;width:auto;height:auto;padding:10px 12px;border-radius:12px;background:#fff;border:1px solid var(--border2);z-index:9999;
      box-shadow:var(--shadow);
    }

    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(130%) blur(10px);
      background:rgba(251,250,247,.78);
      border-bottom:1px solid rgba(31,36,48,.06);
    }
    .nav-wrap{
      display:flex;align-items:center;justify-content:space-between;
      padding:12px 0;
      gap:14px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:240px;
    }
    .ai-page-logo{
      width:38px;height:auto;
      border-radius:12px;
      box-shadow:0 10px 26px rgba(59,91,255,.18);
    }
    .brand-title{
      display:flex;flex-direction:column;line-height:1.1;
    }
    .brand-title strong{font-size:14px;letter-spacing:.2px}
    .brand-title span{font-size:12px;color:var(--muted)}
    nav{display:flex;align-items:center;gap:10px}
    .nav-links{
      display:flex;align-items:center;gap:10px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links a{
      text-decoration:none;
      font-size:13px;color:rgba(31,36,48,.85);
      padding:8px 10px;border-radius:999px;
      border:1px solid transparent;
      transition:background .2s ease, border-color .2s ease, transform .2s ease;
      white-space:nowrap;
    }
    .nav-links a:hover{
      background:rgba(59,91,255,.08);
      border-color:rgba(59,91,255,.18);
      transform:translateY(-1px);
    }
    .nav-cta{
      display:flex;align-items:center;gap:10px;justify-content:flex-end;
    }
    .btn{
      display:inline-flex;align-items:center;justify-content:center;
      border-radius:14px;
      padding:10px 14px;
      border:1px solid rgba(31,36,48,.12);
      background:#fff;
      color:rgba(31,36,48,.92);
      text-decoration:none;
      font-weight:650;
      font-size:13px;
      box-shadow:0 8px 22px rgba(17,24,39,.06);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
      cursor:pointer;
      user-select:none;
    }
    .btn:hover{
      transform:translateY(-1px);
      box-shadow:0 12px 30px rgba(17,24,39,.10);
      border-color:rgba(31,36,48,.20);
    }
    .btn-primary{
      border:1px solid rgba(59,91,255,.25);
      background:linear-gradient(135deg, rgba(59,91,255,.12), rgba(122,44,255,.10));
      color:rgba(20,28,56,.95);
      position:relative;
      overflow:hidden;
    }
    .btn-primary::before{
      content:"";
      position:absolute;inset:-2px;
      background:radial-gradient(250px 120px at 20% 20%, rgba(59,91,255,.24), transparent 55%),
                 radial-gradient(240px 120px at 80% 50%, rgba(122,44,255,.18), transparent 55%);
      opacity:.9;
      pointer-events:none;
    }
    .btn-primary span{position:relative;z-index:1}
    .btn-ghost{
      background:transparent;
      box-shadow:none;
      border:1px solid rgba(31,36,48,.12);
    }
    .icon{
      width:18px;height:18px;display:inline-block;vertical-align:-3px;margin-right:8px;
    }

    .menu-btn{
      display:none;
      border-radius:14px;
      padding:10px 12px;
      border:1px solid rgba(31,36,48,.14);
      background:#fff;
      cursor:pointer;
      box-shadow:0 8px 22px rgba(17,24,39,.06);
    }
    .hamburger{
      width:20px;height:14px;display:inline-block;position:relative;
    }
    .hamburger i{
      position:absolute;left:0;right:0;height:2px;background:rgba(31,36,48,.78);border-radius:2px;
      transition:transform .2s ease, top .2s ease, opacity .2s ease;
    }
    .hamburger i:nth-child(1){top:1px}
    .hamburger i:nth-child(2){top:6px}
    .hamburger i:nth-child(3){top:11px}
    .menu-btn[aria-expanded="true"] .hamburger i:nth-child(1){top:6px;transform:rotate(45deg)}
    .menu-btn[aria-expanded="true"] .hamburger i:nth-child(2){opacity:0}
    .menu-btn[aria-expanded="true"] .hamburger i:nth-child(3){top:6px;transform:rotate(-45deg)}

    .mobile-panel{
      display:none;
      padding:14px 0 16px;
      border-top:1px solid rgba(31,36,48,.06);
    }
    .mobile-panel .nav-links{
      justify-content:flex-start;
      gap:8px;
    }
    .mobile-panel .nav-links a{padding:9px 12px}
    .mobile-panel .nav-cta{justify-content:flex-start;flex-wrap:wrap;margin-top:10px}
    main{padding:22px 0 34px}

    .hero{
      padding:26px 0 10px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.25fr .75fr;
      gap:18px;
      align-items:stretch;
    }
    .hero-card{
      background:
        radial-gradient(800px 380px at 12% 10%, rgba(59,91,255,.22), transparent 56%),
        radial-gradient(700px 380px at 85% 30%, rgba(122,44,255,.18), transparent 52%),
        radial-gradient(520px 300px at 40% 80%, rgba(19,182,166,.12), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,.80), rgba(255,255,255,.70));
      border:1px solid rgba(31,36,48,.10);
      border-radius:var(--radius2);
      padding:22px;
      box-shadow:var(--shadow2);
      position:relative;
      overflow:hidden;
      min-height:280px;
    }
    .hero-card::after{
      content:"";
      position:absolute;inset:-2px;
      background:
        linear-gradient(90deg, rgba(59,91,255,.0), rgba(59,91,255,.10), rgba(122,44,255,.0)),
        linear-gradient(180deg, rgba(19,182,166,.0), rgba(19,182,166,.10), rgba(19,182,166,.0));
      opacity:.45;
      transform:translateX(-25%);
      pointer-events:none;
      animation: sheen 10s ease-in-out infinite;
    }
    @keyframes sheen{
      0%,100%{transform:translateX(-25%);opacity:.28}
      45%{transform:translateX(10%);opacity:.55}
      70%{transform:translateX(0%);opacity:.36}
    }
    .hero-inner{position:relative;z-index:1}
    .eyebrow{
      display:flex;align-items:center;gap:10px;
      flex-wrap:wrap;
      margin-bottom:12px;
    }
    .pill{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(31,36,48,.12);
      background:rgba(255,255,255,.66);
      box-shadow:0 10px 25px rgba(17,24,39,.05);
      font-size:12px;color:rgba(31,36,48,.86);
      white-space:nowrap;
    }
    .dot{
      width:10px;height:10px;border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--primary2));
      box-shadow:0 0 0 6px rgba(59,91,255,.10);
    }
    .hero h1{
      margin:0 0 10px;
      font-size:34px;
      letter-spacing:-.6px;
      line-height:1.15;
    }
    .lead{
      margin:0 0 18px;
      color:var(--muted);
      font-size:14.5px;
      line-height:1.75;
      max-width:62ch;
    }
    .hero-actions{
      display:flex;gap:10px;flex-wrap:wrap;align-items:center;
      margin-bottom:16px;
    }
    .hero-trust{
      display:flex;gap:12px;flex-wrap:wrap;
      align-items:center;
      margin-top:10px;
      color:rgba(31,36,48,.80);
      font-size:12.5px;
    }
    .trust-item{
      display:flex;align-items:center;gap:8px;
      padding:8px 10px;
      border-radius:14px;
      background:rgba(255,255,255,.62);
      border:1px solid rgba(31,36,48,.10);
    }
    .check{
      width:18px;height:18px;border-radius:9px;
      background:linear-gradient(135deg, rgba(24,169,87,.18), rgba(19,182,166,.18));
      border:1px solid rgba(24,169,87,.25);
      display:flex;align-items:center;justify-content:center;
      color:rgba(24,169,87,.95);
      font-weight:900;
      font-size:12px;
    }

    .hero-side{
      display:flex;flex-direction:column;gap:12px;
    }
    .side-stat{
      background:rgba(255,255,255,.72);
      border:1px solid rgba(31,36,48,.10);
      border-radius:var(--radius);
      padding:14px;
      box-shadow:0 10px 28px rgba(17,24,39,.06);
      position:relative;
      overflow:hidden;
    }
    .side-stat::before{
      content:"";
      position:absolute;inset:-40px -40px auto auto;
      width:140px;height:140px;border-radius:50%;
      background:radial-gradient(circle at 30% 30%, rgba(59,91,255,.22), transparent 62%),
                 radial-gradient(circle at 70% 60%, rgba(122,44,255,.18), transparent 60%);
      transform:rotate(20deg);
      pointer-events:none;
    }
    .side-stat h3{
      margin:0 0 6px;
      font-size:14px;letter-spacing:-.2px;
      position:relative;z-index:1;
    }
    .side-stat .stat-row{
      display:flex;gap:10px;align-items:baseline;position:relative;z-index:1;
    }
    .big{
      font-size:26px;font-weight:860;letter-spacing:-.8px;
    }
    .unit{
      color:var(--muted);font-size:12.5px;
      white-space:nowrap;
    }
    .side-stat p{
      margin:8px 0 0;color:var(--muted);font-size:12.8px;line-height:1.65;position:relative;z-index:1;
    }

    .section{
      padding:18px 0;
    }
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;
      margin-bottom:14px;
    }
    .section-title{
      margin:0;
      font-size:20px;
      letter-spacing:-.35px;
    }
    .section-sub{
      margin:0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.7;
      max-width:62ch;
    }

    .grid-3{
      display:grid;grid-template-columns:repeat(3, 1fr);gap:12px;
    }
    .grid-4{
      display:grid;grid-template-columns:repeat(4, 1fr);gap:12px;
    }
    .card{
      background:var(--card);
      border:1px solid rgba(31,36,48,.10);
      border-radius:var(--radius);
      box-shadow:0 10px 25px rgba(17,24,39,.05);
      padding:14px;
      transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
      position:relative;
      overflow:hidden;
    }
    .card:hover{
      transform:translateY(-3px);
      box-shadow:0 16px 38px rgba(17,24,39,.10);
      border-color:rgba(31,36,48,.18);
    }
    .card h3{
      margin:8px 0 6px;
      font-size:14.5px;
      letter-spacing:-.2px;
    }
    .card p{
      margin:0;
      color:var(--muted);
      font-size:13px;
      line-height:1.7;
    }
    .badge{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 10px;border-radius:999px;
      border:1px solid rgba(31,36,48,.12);
      background:rgba(255,255,255,.70);
      font-size:12px;color:rgba(31,36,48,.86);
    }
    .badge i{
      width:10px;height:10px;border-radius:50%;
      background:linear-gradient(135deg, var(--primary), var(--primary2));
      box-shadow:0 0 0 6px rgba(59,91,255,.10);
      display:inline-block;
    }

    .process{
      display:grid;grid-template-columns:repeat(4, 1fr);gap:12px;
      align-items:stretch;
    }
    .step{
      padding:14px;
      border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:
        linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.70));
      box-shadow:0 10px 26px rgba(17,24,39,.05);
      position:relative;overflow:hidden;
    }
    .step::after{
      content:"";
      position:absolute;top:-30px;right:-30px;
      width:120px;height:120px;border-radius:32px;
      background:radial-gradient(circle at 30% 30%, rgba(59,91,255,.22), transparent 60%),
                 radial-gradient(circle at 70% 60%, rgba(122,44,255,.16), transparent 60%);
      transform:rotate(18deg);
      opacity:.6;
      pointer-events:none;
    }
    .step .num{
      width:34px;height:34px;border-radius:14px;
      display:flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg, rgba(59,91,255,.16), rgba(122,44,255,.12));
      border:1px solid rgba(59,91,255,.22);
      font-weight:880;
      position:relative;z-index:1;
    }
    .step h3{margin:10px 0 6px;position:relative;z-index:1;font-size:14.5px}
    .step p{margin:0;color:var(--muted);font-size:13px;line-height:1.7;position:relative;z-index:1}

    .split{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
      align-items:start;
    }
    .list{
      margin:0;padding-left:18px;
      color:var(--muted);
      font-size:13.2px;line-height:1.85;
    }
    .list li{margin:6px 0}
    .checklist{
      display:grid;gap:10px;
    }
    .li-card{
      display:flex;gap:10px;align-items:flex-start;
      padding:12px;border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:#fff;
      box-shadow:0 10px 26px rgba(17,24,39,.04);
      transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .li-card:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(17,24,39,.08);border-color:rgba(31,36,48,.18)}
    .tick{
      width:22px;height:22px;border-radius:11px;
      background:linear-gradient(135deg, rgba(19,182,166,.18), rgba(59,91,255,.12));
      border:1px solid rgba(19,182,166,.24);
      color:rgba(19,182,166,.95);
      display:flex;align-items:center;justify-content:center;
      font-weight:900;
      flex:0 0 auto;
      margin-top:2px;
    }
    .li-card strong{font-size:13.6px;letter-spacing:-.15px}
    .li-card span{display:block;margin-top:3px;color:var(--muted);font-size:13px;line-height:1.65}

    .table-wrap{
      overflow:auto;
      border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:#fff;
      box-shadow:0 10px 26px rgba(17,24,39,.05);
    }
    table{
      border-collapse:separate;border-spacing:0;
      min-width:820px;
      width:100%;
      font-size:13px;
    }
    thead th{
      position:sticky;top:0;
      background:linear-gradient(180deg, rgba(255,255,255,.95), rgba(255,255,255,.85));
      border-bottom:1px solid rgba(31,36,48,.10);
      padding:12px 12px;
      text-align:left;
      color:rgba(31,36,48,.92);
      font-weight:780;
      white-space:nowrap;
    }
    tbody td{
      padding:12px 12px;
      border-bottom:1px solid rgba(31,36,48,.07);
      color:rgba(31,36,48,.84);
      vertical-align:top;
    }
    tbody tr:last-child td{border-bottom:none}
    .tag{
      display:inline-flex;align-items:center;gap:8px;
      padding:6px 10px;border-radius:999px;
      border:1px solid rgba(31,36,48,.12);
      background:rgba(255,255,255,.74);
      font-size:12px;color:rgba(31,36,48,.86);
      margin-right:8px;
      white-space:nowrap;
    }
    .tag .t-dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg, var(--primary), var(--primary2));box-shadow:0 0 0 6px rgba(59,91,255,.10)}
    .score{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;
      margin-top:10px;
    }
    .stars{
      display:flex;gap:3px;align-items:center;
      padding:8px 10px;border-radius:14px;
      border:1px solid rgba(31,36,48,.10);
      background:rgba(255,255,255,.75);
    }
    .star{
      width:16px;height:16px;display:inline-block;
      color:#ffb020;
      filter:drop-shadow(0 6px 10px rgba(255,176,32,.18));
    }
    .score .rating{
      font-size:22px;font-weight:900;letter-spacing:-.6px
    }
    .score .max{color:var(--muted);font-size:13px}
    .eval-grid{
      display:grid;grid-template-columns: 1fr 1fr;gap:12px;align-items:start;
    }
    .review-grid{
      display:grid;grid-template-columns:repeat(3, 1fr);gap:12px;
    }
    .review{
      padding:14px;border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:
        radial-gradient(380px 160px at 20% 0%, rgba(59,91,255,.14), transparent 60%),
        linear-gradient(180deg, rgba(255,255,255,.92), rgba(255,255,255,.76));
      box-shadow:0 10px 26px rgba(17,24,39,.05);
    }
    .review .top{
      display:flex;justify-content:space-between;gap:12px;align-items:flex-start;
      margin-bottom:8px;
    }
    .avatar{
      width:38px;height:38px;border-radius:14px;
      background:linear-gradient(135deg, rgba(59,91,255,.16), rgba(122,44,255,.12));
      border:1px solid rgba(59,91,255,.22);
      display:flex;align-items:center;justify-content:center;
      font-weight:900;color:rgba(31,36,48,.88);
      flex:0 0 auto;
    }
    .review .role{font-size:12.5px;color:var(--muted);margin-top:2px;line-height:1.4}
    .review .name{font-size:14px;font-weight:820;letter-spacing:-.2px}
    .review .body{
      color:rgba(31,36,48,.86);
      font-size:13.2px;line-height:1.75;
      margin:8px 0 0;
    }
    .review .meta{
      display:flex;gap:10px;flex-wrap:wrap;
      margin-top:12px;color:var(--muted);font-size:12.4px
    }

    .gallery{
      display:grid;grid-template-columns:repeat(3, 1fr);gap:12px;
    }
    .case{
      padding:14px;border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:#fff;
      box-shadow:0 10px 26px rgba(17,24,39,.05);
      overflow:hidden;
      position:relative;
    }
    .case h3{margin:8px 0 6px;font-size:14.8px}
    .case .desc{color:var(--muted);font-size:13.1px;line-height:1.7;margin:0 0 10px}
    .case .chips{display:flex;gap:8px;flex-wrap:wrap}
    .chip{
      padding:7px 10px;border-radius:999px;
      background:rgba(246,243,255,.85);
      border:1px solid rgba(122,44,255,.14);
      color:rgba(59,91,255,.92);
      font-size:12.2px;
      white-space:nowrap;
    }
    .case .spark{
      position:absolute;right:-22px;top:-18px;
      width:90px;height:90px;border-radius:26px;
      background:radial-gradient(circle at 35% 25%, rgba(59,91,255,.22), transparent 62%),
                 radial-gradient(circle at 70% 65%, rgba(122,44,255,.18), transparent 60%);
      transform:rotate(16deg);
      opacity:.65;
      pointer-events:none;
    }

    .accordion{
      display:grid;gap:10px;
    }
    details{
      border:1px solid rgba(31,36,48,.10);
      background:#fff;
      border-radius:var(--radius);
      padding:12px 12px;
      box-shadow:0 10px 26px rgba(17,24,39,.04);
    }
    details[open]{
      border-color:rgba(59,91,255,.22);
      box-shadow:0 16px 38px rgba(17,24,39,.08);
    }
    summary{
      cursor:pointer;
      list-style:none;
      display:flex;align-items:flex-start;gap:12px;
      font-weight:800;
      font-size:14px;
      letter-spacing:-.2px;
      outline:none;
    }
    summary::-webkit-details-marker{display:none}
    .qicon{
      width:26px;height:26px;border-radius:12px;
      background:linear-gradient(135deg, rgba(59,91,255,.16), rgba(19,182,166,.12));
      border:1px solid rgba(59,91,255,.20);
      display:flex;align-items:center;justify-content:center;
      flex:0 0 auto;
      margin-top:1px;
      color:rgba(31,36,48,.88);
    }
    .ans{
      color:var(--muted);
      font-size:13.2px;
      line-height:1.8;
      padding:10px 0 2px 38px;
    }

    .form-card{
      padding:16px;
      border-radius:var(--radius2);
      border:1px solid rgba(31,36,48,.10);
      background:
        radial-gradient(700px 280px at 0% 0%, rgba(59,91,255,.16), transparent 55%),
        radial-gradient(560px 280px at 100% 20%, rgba(122,44,255,.14), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,.90), rgba(255,255,255,.76));
      box-shadow:0 16px 45px rgba(17,24,39,.08);
    }
    .form-grid{
      display:grid;grid-template-columns:1fr 1fr;gap:12px;
      margin-top:12px;
    }
    label{
      display:flex;flex-direction:column;gap:8px;
      font-size:12.8px;color:rgba(31,36,48,.86);
      font-weight:720;
    }
    input, select, textarea{
      width:100%;
      padding:11px 12px;
      border-radius:14px;
      border:1px solid rgba(31,36,48,.14);
      background:#fff;
      color:rgba(31,36,48,.92);
      outline:none;
      transition:border-color .2s ease, box-shadow .2s ease, transform .2s ease;
      font-size:13.5px;
    }
    textarea{min-height:108px;resize:vertical}
    input:focus, select:focus, textarea:focus{
      border-color:rgba(59,91,255,.35);
      box-shadow:0 0 0 4px var(--focus);
    }
    .form-actions{
      display:flex;gap:10px;flex-wrap:wrap;align-items:center;
      margin-top:12px;
    }
    .hint{
      color:var(--muted);
      font-size:12.6px;line-height:1.6;
    }

    .article-grid{
      display:grid;grid-template-columns: 1fr 1fr;gap:12px;
    }
    .article{
      padding:14px;border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:#fff;
      box-shadow:0 10px 26px rgba(17,24,39,.05);
      transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .article:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(17,24,39,.08);border-color:rgba(31,36,48,.18)}
    .article .meta{
      display:flex;gap:10px;flex-wrap:wrap;align-items:center;color:var(--muted);font-size:12.4px;margin-bottom:8px
    }
    .article a{
      text-decoration:none;
    }
    .article h3{
      margin:0 0 6px;font-size:14.8px;letter-spacing:-.2px;line-height:1.35
    }
    .article p{
      margin:0;color:var(--muted);font-size:13.1px;line-height:1.7
    }

    .tagcloud{
      display:flex;flex-wrap:wrap;gap:8px;
    }
    .cloud-tag{
      padding:8px 10px;border-radius:999px;
      border:1px solid rgba(31,36,48,.12);
      background:rgba(255,255,255,.72);
      font-size:12.6px;color:rgba(31,36,48,.86);
      transition:transform .2s ease, border-color .2s ease, background .2s ease;
      cursor:pointer;
      user-select:none;
    }
    .cloud-tag:hover{
      transform:translateY(-2px);
      border-color:rgba(59,91,255,.22);
      background:rgba(59,91,255,.07);
    }

    .timeline{
      display:grid;gap:10px;
    }
    .t-item{
      display:flex;gap:12px;align-items:flex-start;
      padding:12px;border-radius:var(--radius);
      border:1px solid rgba(31,36,48,.10);
      background:#fff;
      box-shadow:0 10px 26px rgba(17,24,39,.04);
    }
    .t-line{
      width:10px;height:10px;border-radius:5px;margin-top:7px;
      background:linear-gradient(135deg, var(--primary), var(--primary2));
      box-shadow:0 0 0 6px rgba(59,91,255,.10);
      flex:0 0 auto;
    }
    .t-item strong{font-size:14px}
    .t-item p{margin:4px 0 0;color:var(--muted);font-size:13.1px;line-height:1.7}

    .footer{
      margin-top:18px;
      padding:18px 0 26px;
      border-top:1px solid rgba(31,36,48,.08);
      background:linear-gradient(180deg, rgba(255,255,255,.5), rgba(246,243,255,.35));
    }
    .footer-grid{
      display:grid;grid-template-columns: 1.15fr .85fr;gap:14px;
      align-items:start;
    }
    .footer-brand{
      display:flex;gap:12px;align-items:flex-start;
    }
    .footer-brand img{
      width:44px;height:auto;border-radius:14px;border:1px solid rgba(31,36,48,.12);
      background:#fff;box-shadow:0 10px 26px rgba(17,24,39,.06);
    }
    .footer-brand h3{margin:0 0 6px;font-size:15px}
    .footer-brand p{margin:0;color:var(--muted);font-size:13px;line-height:1.8}
    .footer-links{
      display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end;
    }
    .footer-links a{
      text-decoration:none;
      border:1px solid rgba(31,36,48,.10);
      background:rgba(255,255,255,.70);
      padding:9px 12px;border-radius:14px;
      font-size:13px;color:rgba(31,36,48,.86);
      transition:transform .2s ease, border-color .2s ease, background .2s ease;
      white-space:nowrap;
    }
    .footer-links a:hover{
      transform:translateY(-2px);
      border-color:rgba(59,91,255,.22);
      background:rgba(59,91,255,.07);
    }
    .copyright{
      margin-top:14px;
      display:flex;gap:12px;flex-wrap:wrap;
      align-items:center;justify-content:space-between;
      color:var(--muted);
      font-size:12.5px;
      border-top:1px dashed rgba(31,36,48,.12);
      padding-top:12px;
    }

    .float-qa{
      position:fixed;
      right:14px;bottom:14px;
      z-index:80;
      display:flex;flex-direction:column;gap:10px;align-items:flex-end;
    }
    .float-card{
      width:220px;
      border-radius:18px;
      border:1px solid rgba(31,36,48,.12);
      background:rgba(255,255,255,.82);
      box-shadow:0 18px 55px rgba(17,24,39,.14);
      overflow:hidden;
      transform-origin:100% 100%;
      animation: pop .25s ease-out;
    }
    @keyframes pop{
      from{transform:scale(.96);opacity:.7}
      to{transform:scale(1);opacity:1}
    }
    .float-header{
      padding:10px 12px;
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      background:linear-gradient(135deg, rgba(59,91,255,.12), rgba(122,44,255,.08));
      border-bottom:1px solid rgba(31,36,48,.08);
    }
    .float-header strong{font-size:13px;letter-spacing:-.2px}
    .float-close{
      width:30px;height:30px;border-radius:12px;border:1px solid rgba(31,36,48,.12);background:#fff;
      cursor:pointer;
      display:flex;align-items:center;justify-content:center;
      transition:transform .2s ease, border-color .2s ease;
    }
    .float-close:hover{transform:translateY(-1px);border-color:rgba(31,36,48,.20)}
    .float-body{
      padding:12px;
      display:flex;gap:12px;align-items:center;
    }
    .float-body img{
      width:74px;height:74px;border-radius:16px;
      border:1px solid rgba(31,36,48,.12);
      background:#fff;
      object-fit:cover;
    }
    .float-text{
      flex:1;
      min-width:0;
      display:flex;flex-direction:column;gap:6px;
    }
    .float-text .t1{font-size:12.6px;color:rgba(31,36,48,.86);font-weight:780;line-height:1.4}
    .float-text .t2{font-size:12.2px;color:var(--muted);line-height:1.5}
    .float-btn{
      display:flex;gap:10px;flex-wrap:wrap;
      padding:0 12px 12px;
    }
    .float-btn a{
      flex:1;
      text-align:center;
      text-decoration:none;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(31,36,48,.12);
      background:#fff;
      font-size:13px;font-weight:780;color:rgba(31,36,48,.86);
      transition:transform .2s ease, border-color .2s ease, background .2s ease;
    }
    .float-btn a:hover{transform:translateY(-2px);border-color:rgba(59,91,255,.22);background:rgba(59,91,255,.07)}
    .float-trigger{
      width:52px;height:52px;border-radius:18px;
      border:1px solid rgba(59,91,255,.24);
      background:linear-gradient(135deg, rgba(59,91,255,.14), rgba(122,44,255,.10));
      box-shadow:0 18px 55px rgba(59,91,255,.20);
      cursor:pointer;
      display:flex;align-items:center;justify-content:center;
      transition:transform .2s ease;
    }
    .float-trigger:hover{transform:translateY(-3px)}
    .float-trigger svg{width:22px;height:22px}
    .to-top{
      width:44px;height:44px;border-radius:16px;
      border:1px solid rgba(31,36,48,.12);
      background:rgba(255,255,255,.84);
      box-shadow:0 18px 55px rgba(17,24,39,.12);
      cursor:pointer;
      display:flex;align-items:center;justify-content:center;
      transition:transform .2s ease, opacity .2s ease;
      opacity:0;pointer-events:none;
    }
    .to-top.show{opacity:1;pointer-events:auto}
    .to-top:hover{transform:translateY(-2px)}
    .to-top svg{width:18px;height:18px}

    .reveal{
      opacity:0;transform:translateY(10px);
      transition:opacity .7s ease, transform .7s ease;
    }
    .reveal.in{
      opacity:1;transform:translateY(0);
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns:1fr; }
      .hero-side{flex-direction:row}
      .side-stat{flex:1}
      .grid-3{grid-template-columns:repeat(2,1fr)}
      .grid-4{grid-template-columns:repeat(2,1fr)}
      .process{grid-template-columns:repeat(2,1fr)}
      .split{grid-template-columns:1fr}
      .eval-grid{grid-template-columns:1fr}
      .review-grid{grid-template-columns:repeat(2,1fr)}
      .gallery{grid-template-columns:repeat(2,1fr)}
      .article-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-links{justify-content:flex-start}
    }
    @media (max-width: 760px){
      .nav-links{display:none}
      .menu-btn{display:inline-flex;align-items:center;justify-content:center}
      .mobile-panel{display:block}
      .hero h1{font-size:28px}
      .hero-card{padding:18px;min-height:unset}
      .hero-side{flex-direction:column}
      .grid-3,.grid-4{grid-template-columns:1fr}
      .process{grid-template-columns:1fr}
      .review-grid{grid-template-columns:1fr}
      .gallery{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .float-qa{right:10px;bottom:10px}
      .float-card{width:200px}
    }

    @media (prefers-reduced-motion: reduce){
      .hero-card::after{animation:none}
      .reveal{transition:none}
      html{scroll-behavior:auto}
      *{animation:none !important}
    }