:root{
      --bg0:#ffffff;
      --bg1:#f7f7fb;
      --bg2:#f3f6ff;
      --text:#141414;
      --muted:#5b5f6a;
      --muted2:#7b808c;
      --border:rgba(20,20,20,.10);
      --shadow: 0 10px 30px rgba(20,20,20,.10);
      --shadow2: 0 18px 50px rgba(30,60,120,.14);
      --card:#ffffff;
      --accent1:#5b8cff;
      --accent2:#8a5bff;
      --accent3:#20c997;
      --accent4:#ff6aa2;
      --accent5:#ffb020;
      --focus: rgba(91,140,255,.25);
      --radius-xl:24px;
      --radius-lg:18px;
      --radius-md:14px;
      --radius-sm:12px;
      --container: 1160px;
      --gutter: 20px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC", Arial, sans-serif;
      color:var(--text);
      background:
        radial-gradient(900px 440px at 15% 0%, rgba(91,140,255,.14) 0%, rgba(91,140,255,0) 60%),
        radial-gradient(900px 460px at 85% 0%, rgba(138,91,255,.14) 0%, rgba(138,91,255,0) 58%),
        linear-gradient(180deg, #ffffff 0%, #f7f7fb 55%, #ffffff 100%);
    }
    a{color:inherit; text-decoration:none}
    .container{
      width:100%;
      max-width:var(--container);
      margin:0 auto;
      padding:0 var(--gutter);
    }
    .topbar{
      position:sticky;
      top:0;
      z-index:30;
      background:rgba(255,255,255,.72);
      backdrop-filter: blur(10px);
      border-bottom:1px solid rgba(20,20,20,.06);
    }
    .nav{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:12px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:240px;
    }
    .ai-page-logo{
      width:44px;
      height:auto;
      border-radius:12px;
      box-shadow: 0 10px 20px rgba(40,90,180,.16);
      background:#fff;
    }
    .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);
      margin-top:3px;
    }
    .nav-right{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:12px;
      flex-wrap:wrap;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      flex-wrap:wrap;
      justify-content:flex-end;
    }
    .nav-links a{
      padding:8px 10px;
      border-radius:999px;
      color:var(--muted);
      font-size:13px;
      border:1px solid transparent;
      transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
    }
    .nav-links a:hover{
      background:rgba(91,140,255,.08);
      border-color:rgba(91,140,255,.20);
      color:#24324b;
      transform: translateY(-1px);
    }
    .nav-cta{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.10);
      background:#fff;
      color:#131313;
      font-weight:600;
      font-size:13px;
      cursor:pointer;
      transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      user-select:none;
      white-space:nowrap;
    }
    .btn:focus{outline: none; box-shadow:0 0 0 4px var(--focus)}
    .btn:hover{transform: translateY(-1px)}
    .btn-primary{
      border-color: rgba(91,140,255,.35);
      background: linear-gradient(135deg, rgba(91,140,255,.18), rgba(138,91,255,.12)) , #ffffff;
      box-shadow: 0 14px 30px rgba(91,140,255,.14);
    }
    .btn-primary .dot{
      width:10px; height:10px;
      border-radius:50%;
      background: linear-gradient(135deg, var(--accent1), var(--accent2));
      box-shadow: 0 0 0 4px rgba(91,140,255,.16);
    }
    .btn-solid{
      border:0;
      color:#fff;
      background: linear-gradient(135deg, var(--accent1) 0%, var(--accent2) 55%, var(--accent4) 100%);
      box-shadow: 0 18px 40px rgba(138,91,255,.22);
    }
    .btn-solid:hover{box-shadow: 0 22px 60px rgba(138,91,255,.26)}
    .btn-solid .arrow{
      width:18px; height:18px;
      border-radius:6px;
      background:rgba(255,255,255,.18);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      font-size:12px;
    }
    .menu-btn{
      display:none;
    }

    .mobile-panel{
      display:none;
      padding:10px 0 16px;
    }
    .mobile-panel.open{display:block}
    .mobile-links{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:10px;
      padding:12px;
      border:1px solid rgba(20,20,20,.08);
      border-radius:16px;
      background: rgba(255,255,255,.85);
      box-shadow: 0 18px 40px rgba(0,0,0,.06);
    }
    .mobile-links a{
      padding:12px 10px;
      border:1px solid rgba(20,20,20,.08);
      border-radius:14px;
      background:#fff;
      color:#1f2b3a;
      font-weight:600;
      font-size:13px;
      text-align:center;
      transition: transform .15s ease, box-shadow .2s ease;
    }
    .mobile-links a:hover{
      transform: translateY(-1px);
      box-shadow: 0 14px 30px rgba(20,20,20,.08);
    }

    .hero{
      padding: 34px 0 18px;
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      inset:-160px -120px auto -120px;
      height:420px;
      background:
        radial-gradient(520px 240px at 18% 40%, rgba(91,140,255,.20) 0%, rgba(91,140,255,0) 62%),
        radial-gradient(520px 240px at 50% 20%, rgba(138,91,255,.18) 0%, rgba(138,91,255,0) 60%),
        radial-gradient(520px 240px at 86% 38%, rgba(255,106,162,.16) 0%, rgba(255,106,162,0) 60%);
      pointer-events:none;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.12fr .88fr;
      gap:18px;
      align-items:stretch;
    }
    .hero-left{
      padding: 24px 0 10px;
    }
    .kicker{
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--muted);
      font-weight:600;
      font-size:13px;
      margin-bottom:10px;
    }
    .kicker-badge{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.72);
      box-shadow: 0 14px 40px rgba(10,40,120,.08);
    }
    .kicker-badge i{
      width:10px; height:10px; border-radius:50%;
      background: linear-gradient(135deg, var(--accent3), var(--accent1));
      box-shadow: 0 0 0 4px rgba(32,201,151,.16);
      display:inline-block;
    }
    .hero h1{
      margin:10px 0 12px;
      font-size: 40px;
      line-height:1.14;
      letter-spacing:-.6px;
    }
    .hero-sub{
      color:var(--muted);
      font-size:16px;
      line-height:1.7;
      max-width: 640px;
      margin: 0 0 18px;
    }
    .hero-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      align-items:center;
      margin-bottom: 16px;
    }
    .micro{
      display:flex;
      gap:14px;
      flex-wrap:wrap;
      margin-top: 10px;
    }
    .micro-item{
      display:flex;
      align-items:flex-start;
      gap:10px;
      padding:10px 12px;
      border-radius:16px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      min-width: 200px;
    }
    .micro-icon{
      width:36px; height:36px;
      border-radius:14px;
      background: linear-gradient(135deg, rgba(91,140,255,.18), rgba(138,91,255,.14));
      border: 1px solid rgba(91,140,255,.22);
      display:flex;
      align-items:center;
      justify-content:center;
      flex: 0 0 auto;
    }
    .micro-icon svg{width:18px; height:18px}
    .micro-item strong{
      font-size:13px;
      line-height:1.2;
      display:block;
      margin-top:1px;
    }
    .micro-item span{
      color:var(--muted);
      font-size:12px;
      line-height:1.3;
      display:block;
      margin-top:4px;
    }

    .hero-right{
      display:flex;
      flex-direction:column;
      gap:12px;
      padding: 20px 0 10px;
    }
    .viz-card{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background:
        linear-gradient(180deg, rgba(255,255,255,.82), rgba(255,255,255,.62));
      box-shadow: 0 22px 60px rgba(20,50,120,.12);
      overflow:hidden;
      position:relative;
    }
    .viz-top{
      padding:16px 16px 10px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .viz-title{
      display:flex;
      flex-direction:column;
      gap:5px;
    }
    .viz-title strong{
      font-size:14px;
    }
    .viz-title span{
      font-size:12px;
      color:var(--muted);
    }
    .pulse{
      width:40px; height:40px;
      border-radius:16px;
      position:relative;
      background: linear-gradient(135deg, rgba(32,201,151,.18), rgba(91,140,255,.12));
      border:1px solid rgba(32,201,151,.28);
      display:flex;
      align-items:center;
      justify-content:center;
    }
    .pulse::after{
      content:"";
      position:absolute;
      inset:10px;
      border-radius:50%;
      border:2px solid rgba(32,201,151,.30);
      animation: ring 2.4s ease-in-out infinite;
    }
    @keyframes ring{
      0%{transform:scale(.75); opacity:.0}
      20%{opacity:.8}
      60%{transform:scale(1.35); opacity:.0}
      100%{opacity:0}
    }
    .viz-body{
      padding: 0 16px 16px;
    }
    .data-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:10px;
      margin-top:10px;
    }
    .stat{
      border:1px solid rgba(20,20,20,.08);
      border-radius:16px;
      padding:12px 12px;
      background: rgba(255,255,255,.70);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
      position:relative;
      overflow:hidden;
    }
    .stat:hover{
      transform: translateY(-2px);
      box-shadow: 0 16px 40px rgba(20,20,20,.08);
      border-color: rgba(91,140,255,.22);
    }
    .stat::before{
      content:"";
      position:absolute;
      inset:-2px -2px auto -2px;
      height:52px;
      background: linear-gradient(90deg, rgba(91,140,255,.22), rgba(138,91,255,.18), rgba(255,106,162,.16));
      opacity:.55;
      filter: blur(10px);
      pointer-events:none;
    }
    .stat strong{
      font-size:18px;
      letter-spacing:-.4px;
      display:block;
      position:relative;
      z-index:1;
    }
    .stat span{
      color:var(--muted);
      font-size:12px;
      display:block;
      margin-top:6px;
      line-height:1.25;
      position:relative;
      z-index:1;
    }
    .viz-foot{
      border-top:1px solid rgba(20,20,20,.07);
      padding:12px 16px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .tagrow{
      display:flex;
      gap:8px;
      flex-wrap:wrap;
    }
    .chip{
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      color:#2a2a2a;
      padding:7px 10px;
      border-radius:999px;
      font-size:12px;
      font-weight:600;
      display:inline-flex;
      align-items:center;
      gap:8px;
    }
    .chip b{
      width:8px; height:8px;
      border-radius:50%;
      background: linear-gradient(135deg, var(--accent1), var(--accent2));
      display:inline-block;
      box-shadow: 0 0 0 4px rgba(91,140,255,.16);
    }
    .link-ghost{
      color:#273244;
      font-weight:700;
      font-size:13px;
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      transition: transform .15s ease, box-shadow .2s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .link-ghost:hover{
      transform: translateY(-1px);
      box-shadow: 0 16px 40px rgba(20,20,20,.08);
      border-color: rgba(138,91,255,.22);
    }
    .link-ghost i{
      width:26px; height:26px;
      border-radius:10px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      background: linear-gradient(135deg, rgba(138,91,255,.18), rgba(91,140,255,.12));
      border: 1px solid rgba(138,91,255,.22);
      font-style:normal;
      font-size:12px;
    }

    .section{
      padding: 26px 0;
    }
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:12px;
      margin-bottom: 14px;
    }
    .section-head h2{
      margin:0;
      font-size: 24px;
      letter-spacing:-.3px;
    }
    .section-head p{
      margin:0;
      color:var(--muted);
      max-width: 560px;
      line-height:1.7;
      font-size:14px;
    }
    .subtle-line{
      height:1px;
      background: linear-gradient(90deg, rgba(91,140,255,.28), rgba(138,91,255,.18), rgba(255,106,162,.18), rgba(0,0,0,0));
      margin: 16px 0 6px;
    }

    .grid-3{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:14px;
    }
    .grid-2{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:14px;
    }
    .card{
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      border-radius: var(--radius-lg);
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      padding:16px;
      position:relative;
      overflow:hidden;
    }
    .card::after{
      content:"";
      position:absolute;
      inset:auto -60px -60px auto;
      width:140px; height:140px;
      border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(91,140,255,.22), rgba(91,140,255,0) 62%);
      pointer-events:none;
    }
    .card h3{
      margin:0 0 8px;
      font-size:16px;
      letter-spacing:-.2px;
    }
    .card p{
      margin:0;
      color:var(--muted);
      line-height:1.7;
      font-size:13.5px;
      max-width: 60ch;
    }
    .card .bullets{
      margin-top:10px;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .bullet{
      display:flex;
      gap:10px;
      align-items:flex-start;
    }
    .bullet .bicon{
      width:30px; height:30px;
      border-radius:12px;
      background: linear-gradient(135deg, rgba(32,201,151,.18), rgba(91,140,255,.10));
      border:1px solid rgba(32,201,151,.22);
      display:flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
    }
    .bullet .bicon svg{width:16px;height:16px}
    .bullet strong{
      font-size:13.5px;
      display:block;
      margin-top:2px;
    }
    .bullet span{
      font-size:12.5px;
      color:var(--muted);
      display:block;
      margin-top:4px;
      line-height:1.35;
    }

    .steps{
      display:grid;
      grid-template-columns: repeat(4, minmax(0,1fr));
      gap:14px;
    }
    .step{
      padding:16px;
      border-radius: var(--radius-lg);
      border:1px solid rgba(20,20,20,.08);
      background:
        linear-gradient(180deg, rgba(255,255,255,.76), rgba(255,255,255,.60));
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      position:relative;
      overflow:hidden;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .step:hover{
      transform: translateY(-3px);
      box-shadow: 0 24px 70px rgba(20,20,20,.10);
      border-color: rgba(91,140,255,.22);
    }
    .step .num{
      width:38px; height:38px;
      border-radius:16px;
      background: linear-gradient(135deg, rgba(91,140,255,.22), rgba(138,91,255,.16));
      border:1px solid rgba(91,140,255,.22);
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:900;
      letter-spacing:-.2px;
      position:relative;
      z-index:1;
    }
    .step h3{margin:10px 0 6px; font-size:15.5px; position:relative; z-index:1}
    .step p{margin:0; color:var(--muted); line-height:1.65; font-size:13.5px; position:relative; z-index:1}

    .compare-wrap{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.70);
      box-shadow: 0 22px 60px rgba(20,50,120,.10);
      padding: 16px;
      overflow:hidden;
      position:relative;
    }
    .compare-wrap::before{
      content:"";
      position:absolute;
      inset:-120px auto auto -120px;
      width:340px; height:340px;
      background: radial-gradient(circle at 40% 40%, rgba(255,176,32,.22), rgba(255,176,32,0) 60%);
      pointer-events:none;
    }
    .compare-head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      position:relative;
      z-index:1;
    }
    .rating{
      display:flex;
      align-items:center;
      gap:14px;
      padding: 10px 12px;
      border-radius:18px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
    }
    .stars{
      display:flex;
      gap:4px;
      font-size:14px;
    }
    .rating strong{
      font-size:14px;
    }
    .score{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .score b{font-size:22px; letter-spacing:-.6px}
    .score span{color:var(--muted); font-size:12px; margin-top:4px}
    table{
      width:100%;
      border-collapse:collapse;
      margin-top:12px;
      position:relative;
      z-index:1;
      overflow:auto;
    }
    .table-wrap{
      margin-top:12px;
      overflow:auto;
      border-radius:16px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.66);
    }
    th, td{
      padding:12px 12px;
      border-bottom:1px solid rgba(20,20,20,.06);
      vertical-align:top;
      text-align:left;
      font-size:13px;
      white-space:nowrap;
    }
    th{
      font-size:13px;
      color:#1e293b;
      background: linear-gradient(180deg, rgba(255,255,255,.85), rgba(255,255,255,.70));
      border-bottom:1px solid rgba(20,20,20,.08);
      position:sticky;
      top:0;
      z-index:1;
    }
    tr:last-child td{border-bottom:0}
    .good{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(32,201,151,.25);
      background: rgba(32,201,151,.10);
      color:#145a46;
      font-weight:700;
    }
    .mid{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(91,140,255,.22);
      background: rgba(91,140,255,.10);
      color:#22365a;
      font-weight:700;
    }
    .none{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 10px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(20,20,20,.04);
      color:#2b2b2b;
      font-weight:700;
    }

    .tabs{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-bottom: 12px;
    }
    .tab{
      padding:10px 12px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.72);
      color:var(--muted);
      font-weight:700;
      font-size:13px;
      cursor:pointer;
      transition: transform .15s ease, border-color .2s ease, background .2s ease, color .2s ease;
      user-select:none;
    }
    .tab:hover{transform: translateY(-1px)}
    .tab.active{
      color:#0f1d36;
      border-color: rgba(91,140,255,.30);
      background: linear-gradient(135deg, rgba(91,140,255,.16), rgba(138,91,255,.10)) , rgba(255,255,255,.78);
      box-shadow: 0 18px 40px rgba(91,140,255,.10);
    }
    .tab-panel{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.70);
      padding:16px;
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      overflow:hidden;
    }
    .tab-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
      align-items:start;
    }
    .list{
      margin:0;
      padding:0;
      list-style:none;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      padding:10px 12px;
      border-radius:16px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
    }
    .list li .li-dot{
      width:10px; height:10px;
      border-radius:50%;
      background: linear-gradient(135deg, var(--accent1), var(--accent2));
      margin-top:6px;
      box-shadow: 0 0 0 4px rgba(91,140,255,.14);
      flex:0 0 auto;
    }
    .list li strong{
      font-size:13.5px;
      display:block;
      margin-top:1px;
    }
    .list li span{
      display:block;
      font-size:12.5px;
      color:var(--muted);
      margin-top:4px;
      line-height:1.4;
    }
    .note{
      border-radius:18px;
      border:1px solid rgba(20,20,20,.08);
      background: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.62));
      padding:14px;
    }
    .note h3{margin:0 0 8px; font-size:15.5px}
    .note p{margin:0; color:var(--muted); line-height:1.7; font-size:13.5px}
    .note .cta-row{
      margin-top:12px;
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      align-items:center;
    }

    .faq{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
    }
    details{
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      border-radius: 18px;
      padding: 12px 14px;
      box-shadow: 0 18px 40px rgba(20,20,20,.04);
      transition: border-color .2s ease, transform .2s ease;
    }
    details[open]{border-color: rgba(91,140,255,.25); transform: translateY(-1px)}
    summary{
      cursor:pointer;
      list-style:none;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:10px;
      font-weight:800;
      font-size:14px;
      color:#14213a;
      padding-right:10px;
    }
    summary::-webkit-details-marker{display:none}
    summary .caret{
      width:28px; height:28px;
      border-radius:12px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.78);
      display:flex;
      align-items:center;
      justify-content:center;
      flex:0 0 auto;
      transition: transform .2s ease, border-color .2s ease;
      margin-top:-3px;
      color:#2b2b2b;
      font-size:14px;
    }
    details[open] summary .caret{
      transform: rotate(180deg);
      border-color: rgba(91,140,255,.25);
    }
    details p{
      margin:10px 0 0;
      color:var(--muted);
      line-height:1.7;
      font-size:13.5px;
    }

    .review-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:14px;
    }
    .review{
      padding:16px;
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      position:relative;
      overflow:hidden;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .review:hover{
      transform: translateY(-3px);
      box-shadow: 0 24px 70px rgba(20,20,20,.09);
      border-color: rgba(138,91,255,.22);
    }
    .review .who{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      margin-bottom: 10px;
    }
    .avatar{
      width:42px; height:42px;
      border-radius:16px;
      background: linear-gradient(135deg, rgba(91,140,255,.22), rgba(138,91,255,.14));
      border:1px solid rgba(91,140,255,.20);
      display:flex;
      align-items:center;
      justify-content:center;
      font-weight:900;
      color:#17325f;
    }
    .who strong{
      font-size:14px;
    }
    .who span{
      font-size:12px;
      color:var(--muted);
      display:block;
      margin-top:3px;
    }
    .review .text{
      color:var(--muted);
      line-height:1.75;
      font-size:13.5px;
      margin:0;
    }
    .review .meta{
      margin-top:12px;
      display:flex;
      gap:8px;
      flex-wrap:wrap;
    }
    .pill{
      padding:7px 10px;
      border-radius:999px;
      font-size:12px;
      font-weight:800;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      color:#22324b;
    }

    .case-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:14px;
    }
    .case{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      overflow:hidden;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
      position:relative;
    }
    .case:hover{
      transform: translateY(-3px);
      box-shadow: 0 24px 70px rgba(20,20,20,.09);
      border-color: rgba(91,140,255,.22);
    }
    .case .img{
      padding:14px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.80), rgba(255,255,255,.60));
      border-bottom:1px solid rgba(20,20,20,.06);
    }
    .img-media{
      border-radius:18px;
      border:1px solid rgba(20,20,20,.08);
      background: #fff;
      overflow:hidden;
    }
    .img-media img{
      width:100%;
      height:auto;
      display:block;
      object-fit:cover;
    }
    .case .content{
      padding:14px 14px 16px;
    }
    .case h3{
      margin:0 0 6px;
      font-size:15.5px;
    }
    .case p{
      margin:0;
      color:var(--muted);
      line-height:1.7;
      font-size:13.5px;
    }
    .case .row{
      margin-top:12px;
      display:flex;
      gap:8px;
      flex-wrap:wrap;
    }

    .article-list{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap:14px;
      align-items:start;
    }
    .articles{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      padding:16px;
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      overflow:hidden;
    }
    .articles .head{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      margin-bottom:10px;
    }
    .articles .head strong{font-size:16px}
    .articles .head span{color:var(--muted); font-size:12.5px; margin-top:4px; display:block; line-height:1.3}
    .article-items{
      display:flex;
      flex-direction:column;
      gap:10px;
      margin-top:10px;
    }
    .article-item{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.76);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .article-item:hover{
      transform: translateY(-2px);
      box-shadow: 0 18px 44px rgba(20,20,20,.08);
      border-color: rgba(138,91,255,.22);
    }
    .article-item .left{
      display:flex;
      flex-direction:column;
      gap:6px;
      min-width:0;
    }
    .article-item .title{
      font-weight:900;
      font-size:14px;
      letter-spacing:-.2px;
      overflow:hidden;
      text-overflow:ellipsis;
      display:-webkit-box;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
      line-height:1.35;
    }
    .article-item .meta{
      color:var(--muted);
      font-size:12.5px;
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .article-item .go{
      flex:0 0 auto;
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:9px 10px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.10);
      background:#fff;
      font-weight:900;
      font-size:12.5px;
      color:#1a2b48;
      transition: transform .15s ease;
      white-space:nowrap;
    }
    .article-item .go:hover{transform: translateY(-1px)}
    .sidebar{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.72);
      padding:16px;
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
    }
    .side-title{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      margin-bottom:10px;
    }
    .side-title strong{font-size:16px}
    .side-title span{color:var(--muted); font-size:12.5px; display:block; margin-top:4px}
    .tagcloud{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-top:12px;
    }
    .tag{
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.76);
      font-weight:800;
      font-size:12.5px;
      color:#22324b;
      transition: transform .15s ease, border-color .2s ease;
      cursor:pointer;
      user-select:none;
    }
    .tag:hover{
      transform: translateY(-1px);
      border-color: rgba(91,140,255,.24);
    }

    .form-wrap{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background:
        linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.62));
      box-shadow: 0 22px 60px rgba(20,50,120,.10);
      padding:16px;
      overflow:hidden;
      position:relative;
    }
    .form-wrap::after{
      content:"";
      position:absolute;
      inset:auto -100px -140px auto;
      width:260px; height:260px;
      border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(255,106,162,.20), rgba(255,106,162,0) 62%);
      pointer-events:none;
    }
    form{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:12px;
      margin-top:12px;
    }
    label{
      display:flex;
      flex-direction:column;
      gap:8px;
      font-weight:800;
      font-size:12.5px;
      color:#1d2a3e;
    }
    input, select, textarea{
      width:100%;
      border-radius:14px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.84);
      padding:12px 12px;
      font-size:14px;
      color:#101010;
      outline:none;
      transition: box-shadow .2s ease, border-color .2s ease;
    }
    textarea{min-height:110px; resize:vertical}
    input:focus, select:focus, textarea:focus{
      border-color: rgba(91,140,255,.35);
      box-shadow: 0 0 0 4px var(--focus);
    }
    .full{grid-column: 1 / -1}
    .form-actions{
      grid-column: 1 / -1;
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      align-items:center;
      justify-content:space-between;
      margin-top:6px;
    }
    .hint{
      color:var(--muted);
      font-size:12.5px;
      line-height:1.5;
      max-width: 52ch;
    }
    .toast{
      position: fixed;
      left: 50%;
      bottom: 22px;
      transform: translateX(-50%);
      background: rgba(20,20,20,.88);
      color:#fff;
      padding: 12px 14px;
      border-radius: 14px;
      font-weight:800;
      font-size:13px;
      box-shadow: 0 18px 50px rgba(0,0,0,.25);
      display:none;
      z-index:100;
    }
    .toast.show{display:block; animation: toastIn .22s ease}
    @keyframes toastIn{
      from{transform: translateX(-50%) translateY(8px); opacity:0}
      to{transform: translateX(-50%) translateY(0); opacity:1}
    }

    .footer{
      margin-top: 16px;
      padding: 22px 0 26px;
      background: linear-gradient(180deg, rgba(255,255,255,.0) 0%, rgba(247,247,251,.9) 25%, rgba(243,246,255,.85) 100%);
      border-top: 1px solid rgba(20,20,20,.07);
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.2fr .8fr;
      gap:14px;
      align-items:start;
    }
    .footer-card{
      border-radius: var(--radius-xl);
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.78);
      box-shadow: 0 18px 40px rgba(20,20,20,.05);
      padding:16px;
    }
    .footer h3{margin:0 0 10px; font-size:16px}
    .footer p{margin:0; color:var(--muted); line-height:1.7; font-size:13.5px}
    .footer-links{
      margin-top:12px;
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .footer-links a{
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(20,20,20,.08);
      background: rgba(255,255,255,.76);
      color:#1e293b;
      font-weight:800;
      font-size:12.5px;
      transition: transform .15s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .footer-links a:hover{
      transform: translateY(-1px);
      border-color: rgba(91,140,255,.24);
    }
    .footer-bottom{
      margin-top:14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      flex-wrap:wrap;
      color:var(--muted);
      font-size:12.5px;
    }
    .kefu-float{
      position: fixed;
      right: 18px;
      bottom: 18px;
      z-index: 60;
      display:flex;
      flex-direction:column;
      gap:10px;
      align-items:flex-end;
    }
    .kefu-btn{
      width:52px; height:52px;
      border-radius: 18px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.86);
      box-shadow: 0 22px 60px rgba(20,50,120,.18);
      display:flex;
      align-items:center;
      justify-content:center;
      cursor:pointer;
      transition: transform .15s ease, box-shadow .2s ease;
      user-select:none;
    }
    .kefu-btn:hover{
      transform: translateY(-3px);
      box-shadow: 0 26px 80px rgba(20,50,120,.22);
    }
    .kefu-btn svg{width:22px; height:22px}
    .kefu-pop{
      width: 280px;
      border-radius: 20px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.92);
      box-shadow: 0 22px 70px rgba(0,0,0,.18);
      padding:12px;
      display:none;
      transform-origin: 90% 100%;
    }
    .kefu-pop.open{display:block; animation: popIn .18s ease}
    @keyframes popIn{
      from{transform: translateY(10px) scale(.98); opacity:0}
      to{transform: translateY(0) scale(1); opacity:1}
    }
    .kefu-pop .row{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:10px;
      margin-bottom:10px;
    }
    .kefu-pop strong{font-size:14px}
    .kefu-pop .close{
      width:30px; height:30px;
      border-radius:12px;
      border:1px solid rgba(20,20,20,.10);
      background: rgba(255,255,255,.86);
      cursor:pointer;
      display:flex;
      align-items:center;
      justify-content:center;
      user-select:none;
    }
    .kefu-pop img{
      width:100%;
      height:auto;
      display:block;
      border-radius:16px;
      border:1px solid rgba(20,20,20,.08);
      background:#fff;
    }
    .kefu-pop .small{
      margin-top:10px;
      color:var(--muted);
      font-size:12.5px;
      line-height:1.5;
    }

    .reveal{
      opacity:0;
      transform: translateY(12px);
      transition: opacity .7s ease, transform .7s ease;
    }
    .reveal.show{
      opacity:1;
      transform: translateY(0);
    }

    .sr-only{
      position:absolute;
      width:1px; height:1px;
      padding:0; margin:-1px;
      overflow:hidden; clip:rect(0,0,0,0);
      white-space:nowrap; border:0;
    }
    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; gap:14px}
      .hero h1{font-size:34px}
      .grid-3{grid-template-columns: 1fr}
      .grid-2{grid-template-columns: 1fr}
      .steps{grid-template-columns: 1fr 1fr}
      .faq{grid-template-columns: 1fr}
      .review-grid{grid-template-columns: 1fr}
      .case-grid{grid-template-columns: 1fr}
      .article-list{grid-template-columns: 1fr}
      .tab-grid{grid-template-columns: 1fr}
      .footer-grid{grid-template-columns: 1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-panel.open{display:block}
      form{grid-template-columns: 1fr}
      .kefu-float{right: 12px; bottom: 12px}
    }