:root{
      --bg:#f7f8fb;
      --panel:#ffffff;
      --text:#141821;
      --muted:#5b6677;
      --muted2:#7a869b;
      --line:rgba(20,24,33,.10);
      --line2:rgba(20,24,33,.14);
      --shadow: 0 10px 30px rgba(17,24,39,.08);
      --shadow2: 0 16px 44px rgba(17,24,39,.10);
      --accent:#19c37d;
      --accent2:#1fb6ff;
      --accent3:#6e5cff;
      --accent4:#ff4d6d;
      --accentWarm:#ffb020;
      --btnText:#0b1220;
      --radius:18px;
      --radius2:22px;
      --container: 1140px;
      --padX: 18px;
    }
    *{box-sizing:border-box}
    html,body{height:100%}
    body{
      margin:0;
      font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC","Hiragino Sans GB","Microsoft YaHei", sans-serif;
      background:
        radial-gradient(1200px 600px at 15% -10%, rgba(31,182,255,.18), transparent 60%),
        radial-gradient(900px 500px at 95% 5%, rgba(110,92,255,.14), transparent 55%),
        radial-gradient(800px 500px at 70% 0%, rgba(25,195,125,.14), transparent 55%),
        linear-gradient(180deg, #f7f8fb 0%, #f5f7ff 35%, #f7f8fb 100%);
      color:var(--text);
      overflow-x:hidden;
    }
    a{color:inherit}
    .container{
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 var(--padX);
    }
    .skip-link{
      position:absolute;left:-999px;top:12px;
      padding:10px 12px;background:#fff;border:1px solid var(--line);border-radius:12px;z-index:9999;
    }
    .skip-link:focus{left:14px}
    header{
      position:sticky; top:0; z-index:50;
      background: rgba(247,248,251,.72);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(20,24,33,.06);
    }
    .nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 0;}
    .brand{
      display:flex;align-items:center;gap:12px;min-width: 190px;
    }
    .ai-page-logo{
      width:38px;height:38px;object-fit:contain;flex:0 0 auto;
      filter:saturate(1.05);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.1}
    .brand-name{
      font-weight:800;font-size:14px;letter-spacing:.2px;
    }
    .brand-sub{font-size:12px;color:var(--muted);margin-top:3px;white-space:nowrap}
    nav{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links{
      display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end;
    }
    .nav-links a{
      text-decoration:none;
      font-size:13px;
      color: rgba(20,24,33,.82);
      padding:10px 10px;
      border-radius: 12px;
      transition: background .2s ease, transform .2s ease, color .2s ease;
      white-space:nowrap;
      border: 1px solid transparent;
    }
    .nav-links a:hover{
      background: rgba(31,182,255,.10);
      border-color: rgba(31,182,255,.20);
      transform: translateY(-1px);
      color: rgba(20,24,33,.95);
    }
    .nav-cta{
      display:flex;align-items:center;gap:10px;
    }
    .btn{
      appearance:none;border:1px solid transparent;background:transparent;color:var(--text);
      padding:11px 14px;border-radius: 14px;
      font-weight:700;font-size:13px;cursor:pointer;
      transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease, color .18s ease;
      text-decoration:none;display:inline-flex;align-items:center;gap:10px;
      user-select:none;
    }
    .btn:active{transform: translateY(0px) scale(.99)}
    .btn-primary{
      background: linear-gradient(135deg, #19c37d 0%, #1fb6ff 45%, #6e5cff 100%);
      color:#0b1220;
      box-shadow: 0 10px 26px rgba(31,182,255,.18);
      border-color: rgba(255,255,255,.24);
    }
    .btn-primary:hover{transform: translateY(-1px); box-shadow: 0 14px 34px rgba(31,182,255,.26)}
    .btn-ghost{
      border-color: rgba(20,24,33,.12);
      background: rgba(255,255,255,.55);
    }
    .btn-ghost:hover{transform: translateY(-1px); background: rgba(255,255,255,.82); border-color: rgba(20,24,33,.18)}
    .icon-dot{
      width:10px;height:10px;border-radius:50%;
      background: radial-gradient(circle at 30% 30%, #ffffff 0%, rgba(255,255,255,.2) 22%, transparent 23%),
        linear-gradient(135deg, #ff4d6d, #ffb020);
      box-shadow: 0 0 0 4px rgba(255,77,109,.16);
      flex:0 0 auto;
    }
    .mobile-toggle{
      display:none;
    }
    .mobile-menu{
      display:none;
      padding: 10px 0 16px 0;
    }
    .mobile-menu a{display:block;text-decoration:none;padding:12px 12px;border-radius:14px;border:1px solid rgba(20,24,33,.08);background: rgba(255,255,255,.7);margin-top:8px}
    .mobile-menu a:hover{border-color: rgba(31,182,255,.25); background: rgba(31,182,255,.08)}
    main{padding-bottom: 40px}
    .hero{
      padding: 34px 0 16px 0;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
      align-items: stretch;
    }
    .hero-left{
      background: linear-gradient(180deg, rgba(255,255,255,.78) 0%, rgba(255,255,255,.62) 100%);
      border: 1px solid rgba(20,24,33,.10);
      border-radius: var(--radius2);
      box-shadow: var(--shadow);
      padding: 26px 22px;
      position:relative;
      overflow:hidden;
    }
    .hero-left:before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(800px 260px at 20% 0%, rgba(31,182,255,.22), transparent 55%),
        radial-gradient(620px 220px at 70% 10%, rgba(110,92,255,.18), transparent 55%),
        radial-gradient(560px 240px at 90% 40%, rgba(25,195,125,.15), transparent 60%);
      pointer-events:none;
      z-index:0;
      opacity: .95;
    }
    .hero-left > *{position:relative;z-index:1}
    .pill-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .pill{
      display:inline-flex;align-items:center;gap:10px;
      padding: 8px 12px;border-radius: 999px;
      background: rgba(255,255,255,.72);
      border: 1px solid rgba(20,24,33,.10);
      font-size:12px;font-weight:800;letter-spacing:.2px;
      color: rgba(20,24,33,.86);
    }
    .pill b{font-weight:900}
    .hero-title{
      margin: 14px 0 10px 0;
      font-size: clamp(26px, 3.1vw, 40px);
      line-height: 1.15;
      letter-spacing: -0.6px;
      font-weight: 900;
    }
    .hero-lead{
      margin: 0 0 18px 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.8;
      max-width: 62ch;
    }
    .hero-actions{
      display:flex;gap:12px;flex-wrap:wrap;align-items:center;
      margin: 14px 0 16px 0;
    }
    .hero-subrow{
      display:flex;gap:14px;flex-wrap:wrap;align-items:center;
      padding-top: 8px;
    }
    .mini-note{
      display:flex;align-items:center;gap:10px;
      color: rgba(20,24,33,.82);
      font-size:13px;
      padding: 10px 12px;
      border-radius: 14px;
      border: 1px solid rgba(20,24,33,.09);
      background: rgba(255,255,255,.68);
    }
    .spark{
      width:28px;height:28px;border-radius: 10px;
      background: linear-gradient(135deg, rgba(25,195,125,.20), rgba(31,182,255,.16));
      border: 1px solid rgba(31,182,255,.22);
      display:flex;align-items:center;justify-content:center;
      color: rgba(20,24,33,.86);
      font-weight:900;
    }
    .hero-right{
      border-radius: var(--radius2);
      border: 1px solid rgba(20,24,33,.10);
      background: linear-gradient(180deg, rgba(255,255,255,.70) 0%, rgba(255,255,255,.55) 100%);
      box-shadow: var(--shadow);
      padding: 18px;
      position:relative;
      overflow:hidden;
    }
    .hero-right:after{
      content:"";
      position:absolute; inset:-80px -90px auto auto;
      width: 240px;height:240px;border-radius: 50%;
      background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.85), rgba(255,255,255,.05) 35%, transparent 60%),
        radial-gradient(circle at 60% 60%, rgba(255,77,109,.35), transparent 60%);
      filter: blur(0.2px);
      opacity:.8;
      pointer-events:none;
    }
    .hero-right > *{position:relative;z-index:1}
    .panel-title{
      display:flex;align-items:center;justify-content:space-between;gap:10px;
      margin-bottom: 10px;
    }
    .panel-title h3{margin:0;font-size:14px;letter-spacing:.2px;font-weight:900}
    .badge{
      font-size:12px;font-weight:900;color: rgba(20,24,33,.86);
      padding: 7px 10px;border-radius: 999px;
      background: rgba(31,182,255,.10);
      border: 1px solid rgba(31,182,255,.22);
      white-space:nowrap;
    }
    .metric-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap: 10px;
      margin-top: 12px;
    }
    .metric{
      padding: 12px 12px;
      border-radius: 16px;
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.66);
      transition: transform .2s ease, box-shadow .2s ease;
      min-height: 88px;
    }
    .metric:hover{
      transform: translateY(-2px);
      box-shadow: 0 18px 40px rgba(31,182,255,.14);
    }
    .metric strong{
      display:block;
      font-size: 18px;
      letter-spacing:-.4px;
    }
    .metric span{
      display:block;
      margin-top:6px;
      font-size: 12.5px;
      color: var(--muted);
      line-height: 1.5;
    }
    .tag-cloud{
      display:flex;flex-wrap:wrap;gap:8px;margin-top: 12px;
      padding-top: 10px;
      border-top: 1px solid rgba(20,24,33,.08);
    }
    .tag{
      font-size:12px;
      padding: 8px 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.65);
      border: 1px solid rgba(20,24,33,.10);
      color: rgba(20,24,33,.85);
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
      cursor:pointer;
      user-select:none;
    }
    .tag:hover{transform: translateY(-1px); border-color: rgba(255,77,109,.25); background: rgba(255,77,109,.08)}
    .section{
      padding: 28px 0;
    }
    .section-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;
      margin-bottom: 16px;
    }
    .section-head h2{
      margin:0;
      font-size: 22px;
      letter-spacing:-.4px;
      font-weight: 950;
    }
    .section-head p{
      margin:0;
      color: var(--muted);
      font-size: 13.5px;
      line-height: 1.7;
      max-width: 68ch;
    }
    .grid-3{
      display:grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      align-items: stretch;
    }
    .card{
      border-radius: var(--radius);
      background: rgba(255,255,255,.70);
      border: 1px solid rgba(20,24,33,.10);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
      padding: 16px;
      transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
      overflow:hidden;
      position:relative;
    }
    .card:hover{
      transform: translateY(-3px);
      box-shadow: 0 18px 42px rgba(17,24,39,.10);
      border-color: rgba(31,182,255,.22);
    }
    .card .kicker{
      display:flex;align-items:center;gap:10px;margin-bottom: 10px;
      color: rgba(20,24,33,.85);
      font-size: 12px;
      font-weight: 900;
      letter-spacing:.25px;
      text-transform: uppercase;
    }
    .chip{
      width:30px;height:30px;border-radius: 12px;
      display:flex;align-items:center;justify-content:center;
      border: 1px solid rgba(20,24,33,.10);
      background: linear-gradient(135deg, rgba(31,182,255,.14), rgba(110,92,255,.10));
      font-weight: 950;
    }
    .card h3{
      margin: 0 0 8px 0;
      font-size: 16px;
      font-weight: 950;
      letter-spacing:-.2px;
    }
    .card p{
      margin:0;
      color: var(--muted);
      font-size: 13.5px;
      line-height: 1.75;
    }
    .list{
      margin: 12px 0 0 0;
      padding: 0;
      list-style:none;
      display:flex;flex-direction:column;gap:10px;
    }
    .li{
      display:flex;gap:10px;align-items:flex-start;
      padding: 10px 10px;
      border-radius: 14px;
      border: 1px solid rgba(20,24,33,.08);
      background: rgba(255,255,255,.55);
    }
    .check{
      width:22px;height:22px;border-radius: 10px;
      background: rgba(25,195,125,.12);
      border: 1px solid rgba(25,195,125,.25);
      display:flex;align-items:center;justify-content:center;
      color: rgba(20,24,33,.88);
      font-weight: 1000;
      flex:0 0 auto;
      margin-top: 2px;
    }
    .li strong{display:block;font-size:13.5px}
    .li span{display:block;margin-top:4px;color:var(--muted);font-size:12.8px;line-height:1.65}
    .steps{
      display:grid;grid-template-columns: repeat(4, 1fr);gap:12px;
    }
    .step{
      padding: 16px;border-radius: var(--radius);border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.62);position:relative;overflow:hidden;
    }
    .step:before{
      content:"";
      position:absolute; inset:-60px -70px auto auto;
      width:180px;height:180px;border-radius: 50%;
      background: radial-gradient(circle at 30% 30%, rgba(31,182,255,.18), transparent 58%),
        radial-gradient(circle at 60% 60%, rgba(255,77,109,.12), transparent 60%);
      pointer-events:none;
      opacity:.85;
    }
    .step > *{position:relative}
    .step-num{
      width:38px;height:38px;border-radius: 14px;
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.70);
      display:flex;align-items:center;justify-content:center;
      font-weight: 1000;
      margin-bottom: 10px;
    }
    .step h3{margin:0 0 8px 0;font-size:15px;font-weight:950;letter-spacing:-.2px}
    .step p{margin:0;color:var(--muted);font-size:13.3px;line-height:1.75}
    .split{
      display:grid;grid-template-columns: 1fr 1fr;gap:12px;align-items:start;
    }
    .muted-box{
      background: rgba(255,255,255,.64);
      border: 1px solid rgba(20,24,33,.10);
      border-radius: var(--radius);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
      padding: 16px;
    }
    .muted-box h3{margin:0 0 10px 0;font-size:16px;font-weight:950}
    .muted-box p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.75}
    .scenario-grid{
      display:grid;grid-template-columns: 1fr 1fr;gap:12px;
    }
    .scenario{
      padding:16px;border-radius: var(--radius);
      border:1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.64);
      transition: transform .2s ease, border-color .2s ease;
      position:relative;overflow:hidden;
      min-height: 138px;
    }
    .scenario:hover{transform: translateY(-3px); border-color: rgba(25,195,125,.24)}
    .scenario:after{
      content:"";position:absolute;inset:-2px auto auto -2px;width:140px;height:140px;border-radius: 36px;
      background: linear-gradient(135deg, rgba(25,195,125,.15), rgba(31,182,255,.10), rgba(110,92,255,.08));
      transform: rotate(10deg);
      opacity:.55; pointer-events:none;
    }
    .scenario > *{position:relative}
    .scenario .top{display:flex;align-items:center;justify-content:space-between;gap:10px}
    .scenario h3{margin:10px 0 8px 0;font-size:15.5px;font-weight:950;letter-spacing:-.2px}
    .scenario p{margin:0;color:var(--muted);font-size:13.2px;line-height:1.75;max-width: 52ch}
    .scenario .hint{
      margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;
    }
    .small-pill{
      font-size:12px;padding:7px 10px;border-radius: 999px;
      border:1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.65);
      color: rgba(20,24,33,.85);
      white-space:nowrap;
    }
    .table-wrap{
      overflow:auto;
      border-radius: var(--radius);
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
    }
    table{width:100%;min-width: 760px;border-collapse:collapse}
    th,td{padding:12px 14px;border-bottom:1px solid rgba(20,24,33,.08);vertical-align:top}
    th{
      text-align:left;
      font-size:13px;
      font-weight:950;
      color: rgba(20,24,33,.9);
      background: linear-gradient(180deg, rgba(31,182,255,.12), rgba(31,182,255,.04));
      position:sticky;top:0;z-index:1;
    }
    td{font-size:13.2px;color:var(--muted);line-height:1.65}
    .td-strong{color: rgba(20,24,33,.92);font-weight:900}
    .bar{
      height:10px;border-radius:999px;background: rgba(20,24,33,.08);
      overflow:hidden;border:1px solid rgba(20,24,33,.08);
    }
    .bar > i{
      display:block;height:100%;
      width: 70%;
      background: linear-gradient(90deg, #19c37d, #1fb6ff, #6e5cff);
      border-radius: 999px;
    }
    .bar.alt > i{background: linear-gradient(90deg, #ff4d6d, #ffb020, #19c37d)}
    .bar.low > i{background: linear-gradient(90deg, #9aa5b3, #c6ceda)}
    .compare-head{
      display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom: 12px;
    }
    .rating-card{
      display:flex;align-items:center;gap:14px;
      padding: 14px 14px;border-radius: var(--radius);
      border:1px solid rgba(20,24,33,.10);background: rgba(255,255,255,.65);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
      flex: 0 0 auto;
    }
    .stars{
      display:flex;gap:4px;align-items:center
    }
    .star{
      width:18px;height:18px;
      background: conic-gradient(from 180deg, #ffb020, #ff4d6d);
      -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill=\"black\" d=\"M12 17.3 18.2 21l-1.6-7.1L22 9.2l-7.2-.6L12 2 9.2 8.6 2 9.2l5.4 4.7L5.8 21z\"/>') center/contain no-repeat;
      mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill=\"black\" d=\"M12 17.3 18.2 21l-1.6-7.1L22 9.2l-7.2-.6L12 2 9.2 8.6 2 9.2l5.4 4.7L5.8 21z\"/>') center/contain no-repeat;
      border-radius:2px;
    }
    .rating-meta strong{display:block;font-weight:1000;font-size:18px;letter-spacing:-.3px}
    .rating-meta span{display:block;color:var(--muted);font-size:12.8px;margin-top:4px;line-height:1.4}
    .faq{
      display:grid;grid-template-columns: 1fr 1fr;gap:12px;
      align-items:start;
    }
    .accordion{
      border-radius: var(--radius);
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
      overflow:hidden;
    }
    .acc-item{border-top:1px solid rgba(20,24,33,.08)}
    .acc-item:first-child{border-top:none}
    .acc-btn{
      width:100%;
      text-align:left;
      padding: 14px 14px;
      background: transparent;
      border:none;
      cursor:pointer;
      display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
      color: rgba(20,24,33,.92);
    }
    .acc-q{font-weight:950;font-size:13.8px;line-height:1.55}
    .acc-ico{
      width:34px;height:34px;border-radius: 14px;
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.70);
      display:flex;align-items:center;justify-content:center;
      flex:0 0 auto;
      transition: transform .25s ease, background .25s ease;
      margin-top: -2px;
    }
    .acc-item[data-open="true"] .acc-ico{transform: rotate(45deg); background: rgba(31,182,255,.10); border-color: rgba(31,182,255,.22)}
    .acc-panel{
      max-height: 0;
      overflow:hidden;
      transition: max-height .28s ease;
    }
    .acc-inner{
      padding: 0 14px 14px 14px;
      color: var(--muted);
      font-size: 13.2px;
      line-height: 1.75;
    }
    .reviews{
      display:grid;grid-template-columns: repeat(3, 1fr);gap:12px;
    }
    .review{
      padding:16px;border-radius: var(--radius);
      border:1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.64);
      transition: transform .22s ease, box-shadow .22s ease;
    }
    .review:hover{transform: translateY(-3px);box-shadow: 0 18px 42px rgba(17,24,39,.10)}
    .review-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom: 8px}
    .review-person{display:flex;gap:10px;align-items:center}
    .avatar{
      width:34px;height:34px;border-radius: 14px;
      background: linear-gradient(135deg, rgba(255,77,109,.18), rgba(31,182,255,.14));
      border:1px solid rgba(20,24,33,.10);
      display:flex;align-items:center;justify-content:center;
      font-weight: 1000;
      color: rgba(20,24,33,.86);
      flex:0 0 auto;
    }
    .review-role strong{display:block;font-size:13.6px;font-weight:1000}
    .review-role span{display:block;margin-top:3px;color:var(--muted);font-size:12.5px}
    .review p{margin:0;color:var(--muted);font-size:13.2px;line-height:1.75}
    .case-grid{
      display:grid;grid-template-columns: repeat(3, 1fr);gap:12px;
    }
    .case{
      padding:16px;border-radius: var(--radius);
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.64);
      overflow:hidden;
      position:relative;
      transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
      min-height: 220px;
      display:flex;flex-direction:column;gap:10px;
    }
    .case:hover{transform: translateY(-3px);border-color: rgba(110,92,255,.22);box-shadow: 0 18px 42px rgba(17,24,39,.10)}
    .case .thumb{
      border-radius: 16px;
      border:1px solid rgba(20,24,33,.10);
      background:
        linear-gradient(135deg, rgba(31,182,255,.14), rgba(110,92,255,.10), rgba(25,195,125,.10)),
        radial-gradient(600px 200px at 20% 0%, rgba(255,255,255,.55), transparent 60%);
      height: 120px;
      position:relative;
      overflow:hidden;
    }
    .case .thumb:after{
      content:"";
      position:absolute; inset:auto -30px -40px auto;
      width:140px;height:140px;border-radius: 50%;
      background: radial-gradient(circle at 30% 30%, rgba(255,255,255,.8), rgba(255,255,255,.05) 35%, transparent 60%),
        radial-gradient(circle at 60% 60%, rgba(255,176,32,.35), transparent 62%);
      opacity:.9;
      transform: rotate(-10deg);
    }
    .case h3{margin:0;font-size:15.5px;font-weight:1000;letter-spacing:-.2px}
    .case p{margin:0;color:var(--muted);font-size:13.2px;line-height:1.75}
    .case .meta{
      display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;
      padding-top: 8px;
      border-top:1px solid rgba(20,24,33,.08);
    }
    .article-list{
      display:grid;grid-template-columns: 1.1fr .9fr;gap:12px;align-items:start;
    }
    .articles{
      border-radius: var(--radius);
      border:1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
      overflow:hidden;
    }
    .article-head{
      padding: 16px 16px 12px 16px;
      border-bottom: 1px solid rgba(20,24,33,.08);
      display:flex;align-items:flex-end;justify-content:space-between;gap:12px;flex-wrap:wrap;
    }
    .article-head h3{margin:0;font-size:16px;font-weight:1000}
    .article-head span{color:var(--muted);font-size:12.8px}
    .article-item{
      padding: 12px 16px;
      border-top: 1px solid rgba(20,24,33,.08);
      display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
    }
    .article-item:first-child{border-top:none}
    .article-item a{
      text-decoration:none;
      display:block;
      font-weight:950;
      color: rgba(20,24,33,.92);
      font-size: 13.8px;
      line-height:1.5;
    }
    .article-item p{margin:6px 0 0 0;color:var(--muted);font-size:12.9px;line-height:1.6}
    .article-item .go{
      font-size:12px;font-weight:1000;color: rgba(20,24,33,.84);
      border:1px solid rgba(20,24,33,.12);
      padding: 9px 10px;border-radius: 14px;
      background: rgba(255,255,255,.65);
      white-space:nowrap;
      transition: transform .2s ease, border-color .2s ease;
      flex:0 0 auto;
      align-self:center;
    }
    .article-item a:hover + .go{transform: translateY(-1px); border-color: rgba(31,182,255,.22)}
    .side-box{
      border-radius: var(--radius);
      border:1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 10px 26px rgba(17,24,39,.06);
      padding: 16px;
    }
    .side-box h3{margin:0 0 10px 0;font-size:16px;font-weight:1000}
    .side-box p{margin:0;color:var(--muted);font-size:13.2px;line-height:1.75}
    .price-grid{
      margin-top: 12px;
      display:grid;grid-template-columns: 1fr 1fr;gap:10px;
    }
    .price{
      padding:12px;border-radius: 16px;
      border: 1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.65);
    }
    .price strong{display:block;font-size:14px;font-weight:1000}
    .price span{display:block;margin-top:6px;color:var(--muted);font-size:12.7px;line-height:1.5}
    form{
      display:grid;gap:12px;
    }
    .form-grid{
      display:grid;grid-template-columns: 1fr 1fr;gap:12px;
    }
    label{display:block;font-size:12.8px;color: rgba(20,24,33,.86);font-weight:900;margin-bottom:8px}
    input,select,textarea{
      width:100%;
      padding: 12px 12px;
      border-radius: 14px;
      border: 1px solid rgba(20,24,33,.14);
      background: rgba(255,255,255,.80);
      color: var(--text);
      outline:none;
      transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
      font-size: 14px;
    }
    textarea{min-height: 110px;resize: vertical}
    input:focus,select:focus,textarea:focus{
      border-color: rgba(31,182,255,.45);
      box-shadow: 0 0 0 4px rgba(31,182,255,.14);
    }
    .form-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top: 2px}
    .btn-submit{
      padding: 12px 16px;
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,.25);
      background: linear-gradient(135deg, rgba(25,195,125,.98) 0%, rgba(31,182,255,.96) 45%, rgba(110,92,255,.96) 100%);
      color: #08111f;
      font-weight: 1000;
      cursor:pointer;
      transition: transform .18s ease, box-shadow .18s ease;
      display:inline-flex;align-items:center;gap:10px;
      box-shadow: 0 14px 30px rgba(31,182,255,.20);
    }
    .btn-submit:hover{transform: translateY(-2px);box-shadow: 0 18px 40px rgba(31,182,255,.28)}
    .form-note{color:var(--muted);font-size:12.8px;line-height:1.6}
    .toast{
      position: fixed;
      left: 50%;
      transform: translateX(-50%);
      bottom: 20px;
      background: rgba(15,23,42,.92);
      color: #fff;
      border: 1px solid rgba(255,255,255,.14);
      padding: 12px 14px;
      border-radius: 16px;
      box-shadow: 0 18px 60px rgba(0,0,0,.22);
      display:none;
      z-index: 999;
      max-width: calc(100% - 28px);
      width: 520px;
    }
    .toast b{font-weight:1000}
    .toast .tmeta{display:flex;align-items:flex-start;gap:10px}
    .toast .ticon{
      width:34px;height:34px;border-radius: 14px;
      background: rgba(31,182,255,.18);
      border: 1px solid rgba(31,182,255,.34);
      display:flex;align-items:center;justify-content:center;flex:0 0 auto;
      font-weight:1000;
    }
    footer{
      background: linear-gradient(180deg, rgba(20,24,33,.02) 0%, rgba(20,24,33,.06) 100%);
      border-top: 1px solid rgba(20,24,33,.08);
      padding: 22px 0 26px 0;
      margin-top: 10px;
    }
    .footer-grid{
      display:grid;grid-template-columns: 1.1fr .9fr;gap:12px;align-items:start;
    }
    .footer-card{
      border-radius: var(--radius);
      border:1px solid rgba(20,24,33,.10);
      background: rgba(255,255,255,.70);
      padding: 16px;
    }
    .footer-card h3{margin:0 0 10px 0;font-size:16px;font-weight:1000}
    .footer-card p{margin:0;color:var(--muted);font-size:13.2px;line-height:1.75}
    .footer-row{
      display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top: 12px;
    }
    .footer-links{
      display:flex;flex-wrap:wrap;gap:10px;margin-top: 12px;
    }
    .footer-links a{
      text-decoration:none;
      border:1px solid rgba(20,24,33,.12);
      background: rgba(255,255,255,.65);
      padding: 9px 10px;
      border-radius: 14px;
      font-size: 12.8px;
      color: rgba(20,24,33,.88);
      transition: transform .18s ease, border-color .18s ease, background .18s ease;
      white-space:nowrap;
    }
    .footer-links a:hover{
      transform: translateY(-1px);
      border-color: rgba(31,182,255,.22);
      background: rgba(31,182,255,.08);
    }
    .copyright{
      margin-top: 14px;
      color: var(--muted2);
      font-size: 12.5px;
      display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;
    }
    .backtop{
      position: fixed;
      right: 14px;
      bottom: 14px;
      z-index: 80;
      display:none;
    }
    .backtop .btn{
      padding: 12px 12px;
      border-radius: 16px;
      background: rgba(255,255,255,.82);
      border: 1px solid rgba(20,24,33,.12);
      box-shadow: 0 16px 40px rgba(0,0,0,.10);
    }
    .kefu-float{
      position: fixed;
      left: 14px;
      bottom: 14px;
      z-index: 80;
      display:flex;gap:10px;align-items:flex-end;
    }
    .kefu-card{
      background: rgba(255,255,255,.86);
      border: 1px solid rgba(20,24,33,.12);
      border-radius: 18px;
      padding: 10px;
      box-shadow: 0 18px 60px rgba(0,0,0,.10);
      display:flex;gap:10px;align-items:center;
      max-width: 220px;
    }
    .kefu-card img{width:56px;height:56px;border-radius: 16px;object-fit:cover;border:1px solid rgba(20,24,33,.10)}
    .kefu-card .ktext{display:flex;flex-direction:column;gap:4px}
    .kefu-card .ktext strong{font-size:13px;font-weight:1000}
    .kefu-card .ktext span{font-size:12.5px;color:var(--muted);line-height:1.3}
    .kefu-minibar{
      display:none;
    }
    .reveal{
      opacity:0;
      transform: translateY(10px);
      transition: opacity .55s ease, transform .55s ease;
    }
    .reveal.in{
      opacity:1;
      transform: translateY(0);
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; }
      .metric-grid{grid-template-columns: 1fr 1fr}
      .grid-3{grid-template-columns: 1fr; }
      .steps{grid-template-columns: 1fr 1fr}
      .split{grid-template-columns: 1fr}
      .scenario-grid{grid-template-columns: 1fr}
      .faq{grid-template-columns: 1fr}
      .reviews{grid-template-columns: 1fr}
      .case-grid{grid-template-columns: 1fr}
      .article-list{grid-template-columns: 1fr}
      .footer-grid{grid-template-columns: 1fr}
      .kefu-card{max-width: 200px}
    }
    @media (max-width: 720px){
      .nav-links{display:none}
      .mobile-toggle{display:inline-flex}
      .mobile-menu{display:block}
      .hero-left{padding: 22px 16px}
      .hero-right{padding: 14px}
      .metric-grid{grid-template-columns: 1fr 1fr}
      .steps{grid-template-columns: 1fr}
      .form-grid{grid-template-columns: 1fr}
      .kefu-card{padding: 8px; border-radius: 16px}
      .kefu-card img{width:50px;height:50px}
      .kefu-float{left: 10px; bottom: 10px}
    }