:root{
      --bg:#f7f6ff;
      --surface:#ffffff;
      --text:#1f2430;
      --muted:#5a647a;
      --line:rgba(28,32,45,.10);
      --shadow:0 14px 38px rgba(16,24,40,.10);
      --shadow2:0 10px 24px rgba(16,24,40,.10);
      --radius:18px;
      --radius2:26px;
      --brand1:#7c3aed;
      --brand2:#06b6d4;
      --brand3:#f97316;
      --brand4:#22c55e;
      --btn:#111827;
      --focus:rgba(124,58,237,.35);
      --chip:rgba(124,58,237,.10);
      --grad:linear-gradient(135deg,#7c3aed 0%,#06b6d4 45%,#f97316 100%);
      --grad2:linear-gradient(135deg, rgba(124,58,237,.18) 0%, rgba(6,182,212,.14) 45%, rgba(249,115,22,.14) 100%);
      --grad3:linear-gradient(135deg, rgba(124,58,237,.92) 0%, rgba(6,182,212,.88) 55%, rgba(249,115,22,.86) 100%);
      --cardGrad:linear-gradient(180deg, rgba(124,58,237,.06), rgba(6,182,212,.04));
      --gridGap:18px;
      --container:1120px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "PingFang SC","Hiragino Sans GB","Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      background:
        radial-gradient(900px 360px at 10% -5%, rgba(124,58,237,.18), transparent 60%),
        radial-gradient(780px 340px at 88% 0%, rgba(6,182,212,.16), transparent 55%),
        radial-gradient(720px 360px at 70% 32%, rgba(249,115,22,.10), transparent 52%),
        linear-gradient(180deg, #fbfbff 0%, var(--bg) 55%, #f6f7ff 100%);
      color:var(--text);
      line-height:1.6;
      overflow-x:hidden;
    }
    a{color:inherit; text-decoration:none}
    img{max-width:100%; height:auto; display:block}
    .container{
      width:100%;
      max-width:var(--container);
      margin:0 auto;
      padding:0 18px;
    }
    .skip{
      position:absolute; left:-9999px; top:auto; width:1px; height:1px; overflow:hidden;
    }
    .skip:focus{
      left:18px; top:14px; width:auto; height:auto;
      padding:10px 12px; background:#fff; border:1px solid var(--line);
      border-radius:12px; box-shadow:var(--shadow2); z-index:9999;
      outline:3px solid var(--focus);
    }

    header{
      position:sticky; top:0; z-index:50;
      background: rgba(250,250,255,.72);
      backdrop-filter: blur(10px);
      border-bottom:1px solid rgba(28,32,45,.08);
    }
    .nav-wrap{display:flex; align-items:center; justify-content:space-between; gap:14px; padding:12px 0}
    .brand{
      display:flex; align-items:center; gap:10px; min-width:220px;
    }
    .brand img.ai-page-logo{width:38px; height:38px; border-radius:12px; box-shadow:0 10px 20px rgba(124,58,237,.18)}
    .brand-title{
      display:flex; flex-direction:column; gap:2px;
      padding-top:2px;
    }
    .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:14px;
      padding:0; margin:0; list-style:none;
      flex-wrap:wrap;
    }
    .nav-links a{
      font-size:13px; color:var(--muted);
      padding:8px 10px; border-radius:12px;
      transition: background .2s ease, color .2s ease, transform .2s ease;
      outline:none;
    }
    .nav-links a:hover{
      background: rgba(124,58,237,.08);
      color:#3a3650;
      transform: translateY(-1px);
    }
    .nav-actions{display:flex; align-items:center; gap:10px}
    .btn{
      display:inline-flex; align-items:center; justify-content:center;
      padding:10px 14px; border-radius:14px;
      border:1px solid rgba(28,32,45,.12);
      background:#fff; color:var(--text);
      font-weight:650; font-size:13px;
      transition: transform .15s ease, box-shadow .15s ease, background .2s ease, border-color .2s ease;
      user-select:none;
      white-space:nowrap;
    }
    .btn:hover{transform: translateY(-1px); box-shadow:0 14px 28px rgba(16,24,40,.10)}
    .btn:active{transform: translateY(0px)}
    .btn:focus{outline:none; box-shadow:0 0 0 4px var(--focus)}
    .btn-primary{
      border:0;
      background: var(--grad3);
      color:#fff;
      box-shadow:0 14px 30px rgba(124,58,237,.22);
    }
    .btn-primary:hover{box-shadow:0 18px 40px rgba(124,58,237,.28)}
    .btn-ghost{
      background: rgba(124,58,237,.08);
      border-color: rgba(124,58,237,.18);
    }
    .icon{
      width:18px; height:18px; display:inline-block;
    }

    .mobile-toggle{display:none}
    .mobile-panel{
      display:none;
      padding:10px 0 14px;
    }
    .mobile-panel .mobile-links{
      display:flex; flex-direction:column; gap:10px;
      padding:8px; border-radius:16px;
      background: rgba(255,255,255,.7);
      border:1px solid rgba(28,32,45,.08);
      box-shadow: 0 18px 40px rgba(16,24,40,.08);
    }
    .mobile-panel a{
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(28,32,45,.08);
      background: rgba(255,255,255,.85);
      color: var(--text);
      font-weight:650;
      font-size:14px;
    }

    .hero{
      padding:28px 0 18px;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.08fr .92fr;
      gap:22px;
      align-items:stretch;
    }
    .hero-left{
      border-radius: var(--radius2);
      background:
        radial-gradient(1200px 420px at 0% 0%, rgba(124,58,237,.20), transparent 55%),
        radial-gradient(900px 340px at 84% 22%, rgba(6,182,212,.18), transparent 52%),
        radial-gradient(720px 340px at 40% 80%, rgba(249,115,22,.12), transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,.70), rgba(255,255,255,.52));
      border:1px solid rgba(28,32,45,.10);
      box-shadow: 0 30px 70px rgba(16,24,40,.10);
      padding:22px 22px 18px;
      position:relative;
      overflow:hidden;
      min-height: 420px;
    }
    .hero-left::before{
      content:"";
      position:absolute; inset:-2px;
      background: conic-gradient(from 220deg at 60% 20%, rgba(124,58,237,.18), rgba(6,182,212,.16), rgba(249,115,22,.15), rgba(34,197,94,.12), rgba(124,58,237,.18));
      opacity:.55;
      filter: blur(26px);
      pointer-events:none;
    }
    .hero-left > *{position:relative; z-index:1}
    .hero-top{
      display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
      margin-bottom:12px;
    }
    .badge-row{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
    .badge{
      display:inline-flex; align-items:center; gap:8px;
      border-radius:999px;
      padding:8px 12px;
      background: rgba(255,255,255,.65);
      border:1px solid rgba(28,32,45,.10);
      color:#2b2f3b;
      font-weight:650;
      font-size:12.5px;
    }
    .badge .dot{
      width:9px; height:9px; border-radius:50%;
      background: var(--grad);
      box-shadow:0 0 0 5px rgba(124,58,237,.12);
    }
    .hero-title{
      margin:0;
      font-size:42px;
      letter-spacing:-.8px;
      line-height:1.1;
    }
    .hero-title .em{
      display:inline-block;
      background: linear-gradient(135deg,#6d28d9,#0ea5e9,#f97316);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
      font-weight:900;
    }
    .hero-sub{
      margin:12px 0 0;
      color:var(--muted);
      font-size:15.5px;
      max-width: 56ch;
    }
    .hero-actions{
      display:flex; gap:12px; flex-wrap:wrap; align-items:center;
      margin-top:16px;
    }
    .hero-meta{
      display:grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap:12px;
      margin-top:16px;
    }
    .mini{
      border-radius:16px;
      padding:12px 12px;
      background: rgba(255,255,255,.68);
      border:1px solid rgba(28,32,45,.10);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .mini:hover{
      transform: translateY(-2px);
      box-shadow: 0 16px 38px rgba(16,24,40,.12);
      border-color: rgba(124,58,237,.26);
    }
    .mini strong{display:block; font-size:18px; letter-spacing:-.3px}
    .mini span{display:block; color:var(--muted); font-size:12.8px; margin-top:4px}
    .hero-right{
      border-radius: var(--radius2);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.64);
      box-shadow: 0 22px 54px rgba(16,24,40,.08);
      overflow:hidden;
      padding:16px;
      display:flex; flex-direction:column; gap:14px;
      min-height: 420px;
    }
    .right-head{
      display:flex; align-items:center; justify-content:space-between; gap:10px;
    }
    .right-head h2{
      margin:0;
      font-size:16px;
      letter-spacing:.2px;
    }
    .pill{
      display:inline-flex; align-items:center; gap:8px;
      font-size:12px; color:#2b2f3b; font-weight:700;
      background: rgba(34,197,94,.10);
      border:1px solid rgba(34,197,94,.18);
      padding:7px 10px;
      border-radius:999px;
      white-space:nowrap;
    }
    .pill svg{width:16px; height:16px}
    .data-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
      padding:2px 0 0;
    }
    .metric{
      border-radius:18px;
      padding:12px 12px;
      background: linear-gradient(180deg, rgba(124,58,237,.10), rgba(255,255,255,.66));
      border:1px solid rgba(28,32,45,.10);
      transition: transform .18s ease, box-shadow .18s ease;
      position:relative;
      overflow:hidden;
      min-height: 94px;
    }
    .metric::after{
      content:"";
      position:absolute; right:-36px; top:-36px;
      width:92px; height:92px;
      border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(6,182,212,.20), rgba(124,58,237,.08) 55%, transparent 70%);
      pointer-events:none;
    }
    .metric:hover{transform: translateY(-2px); box-shadow: 0 18px 40px rgba(16,24,40,.12)}
    .metric strong{display:block; font-size:22px; letter-spacing:-.4px}
    .metric span{display:block; margin-top:6px; color:var(--muted); font-size:12.8px}
    .model-chips{
      display:flex; flex-wrap:wrap; gap:8px;
      margin-top:auto;
      padding-top:2px;
    }
    .chip{
      border-radius:999px;
      padding:8px 10px;
      background: rgba(124,58,237,.10);
      border:1px solid rgba(124,58,237,.18);
      font-size:12.5px;
      color:#2b2f3b;
      font-weight:650;
      transition: transform .15s ease, background .2s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .chip:hover{transform: translateY(-1px); border-color: rgba(124,58,237,.30); background: rgba(124,58,237,.14)}
    .section{
      padding:26px 0;
    }
    .section-head{
      display:flex; align-items:flex-end; justify-content:space-between; gap:16px; flex-wrap:wrap;
      margin-bottom:14px;
    }
    .kicker{
      display:inline-flex; align-items:center; gap:10px;
      color:#2b2f3b;
      font-weight:800; font-size:12.5px;
      letter-spacing:.4px;
      text-transform:uppercase;
    }
    .kicker .bar{
      width:14px; height:14px; border-radius:5px;
      background: var(--grad);
      box-shadow:0 0 0 5px rgba(124,58,237,.12);
    }
    h2{
      margin:0;
      font-size:26px;
      letter-spacing:-.5px;
      line-height:1.2;
    }
    .lead{
      margin:6px 0 0;
      color:var(--muted);
      font-size:14.8px;
      max-width: 68ch;
    }

    .grid-2{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:18px;
      align-items:start;
    }
    .grid-3{
      display:grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap:14px;
    }
    .grid-4{
      display:grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap:14px;
    }

    .card{
      background: rgba(255,255,255,.68);
      border:1px solid rgba(28,32,45,.10);
      border-radius:var(--radius);
      box-shadow: 0 18px 40px rgba(16,24,40,.06);
      padding:16px;
      position:relative;
      overflow:hidden;
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .card:hover{
      transform: translateY(-2px);
      box-shadow: 0 22px 56px rgba(16,24,40,.10);
      border-color: rgba(124,58,237,.22);
    }
    .card-title{
      display:flex; align-items:center; gap:10px;
      margin-bottom:8px;
    }
    .card-title strong{font-size:15.5px; letter-spacing:.1px}
    .card-title .badgeIcon{
      width:40px; height:40px; border-radius:14px;
      background: var(--cardGrad);
      border:1px solid rgba(124,58,237,.16);
      display:flex; align-items:center; justify-content:center;
      box-shadow: 0 14px 30px rgba(124,58,237,.08);
    }
    .card p{margin:0; color:var(--muted); font-size:14px}
    .list{
      margin:10px 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;
      background: rgba(255,255,255,.55);
      border:1px solid rgba(28,32,45,.08);
    }
    .li .check{
      width:20px; height:20px; flex:0 0 auto;
      border-radius:7px;
      background: rgba(124,58,237,.12);
      border:1px solid rgba(124,58,237,.20);
      display:flex; align-items:center; justify-content:center;
      margin-top:1px;
    }
    .li strong{display:block; font-size:13.5px}
    .li span{display:block; color:var(--muted); font-size:12.8px; margin-top:2px}
    .steps{
      display:grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap:14px;
    }
    .step{
      padding:16px;
      border-radius:var(--radius);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.66);
      position:relative;
      overflow:hidden;
      transition: transform .18s ease, box-shadow .18s ease;
    }
    .step:hover{transform: translateY(-2px); box-shadow: 0 22px 56px rgba(16,24,40,.10)}
    .step .num{
      width:38px; height:38px;
      border-radius:14px;
      background: rgba(124,58,237,.12);
      border:1px solid rgba(124,58,237,.18);
      display:flex; align-items:center; justify-content:center;
      font-weight:900;
      letter-spacing:-.2px;
      margin-bottom:10px;
      color:#2b2f3b;
    }
    .step h3{
      margin:0;
      font-size:15px;
      letter-spacing:.1px;
    }
    .step p{
      margin:8px 0 0;
      color:var(--muted);
      font-size:13.6px;
    }

    .compare-wrap{
      overflow:auto;
      border-radius:var(--radius);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.66);
      box-shadow: 0 18px 40px rgba(16,24,40,.06);
    }
    table{
      width:100%;
      border-collapse:collapse;
      min-width: 840px;
    }
    th, td{
      padding:12px 12px;
      border-bottom:1px solid rgba(28,32,45,.08);
      vertical-align:top;
      text-align:left;
      font-size:13.5px;
    }
    th{
      background: rgba(124,58,237,.08);
      color:#2b2f3b;
      font-weight:900;
    }
    td{color:var(--muted)}
    td strong{color:var(--text)}
    .row-emph{
      background: linear-gradient(90deg, rgba(124,58,237,.10), rgba(6,182,212,.06), rgba(249,115,22,.04));
    }

    .tabs{
      display:flex; gap:10px; flex-wrap:wrap; align-items:center;
      margin:12px 0 0;
    }
    .tab{
      padding:10px 12px;
      border-radius:999px;
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.70);
      color: var(--muted);
      font-weight:750;
      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); border-color: rgba(124,58,237,.24)}
    .tab[aria-selected="true"]{
      background: rgba(124,58,237,.12);
      border-color: rgba(124,58,237,.35);
      color:#2b2f3b;
    }
    .timeline{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
    }
    .timeline-card{
      padding:16px;
      border-radius:var(--radius);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.64);
      overflow:hidden;
      position:relative;
      transition: transform .18s ease, box-shadow .18s ease;
    }
    .timeline-card:hover{transform: translateY(-2px); box-shadow: 0 22px 56px rgba(16,24,40,.10)}
    .timeline-card .tag{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 10px;
      border-radius:999px;
      background: rgba(6,182,212,.10);
      border:1px solid rgba(6,182,212,.20);
      color:#2b2f3b;
      font-weight:850; font-size:12.5px;
      margin-bottom:10px;
      white-space:nowrap;
    }
    .timeline-card .tag .spark{
      width:8px; height:8px; border-radius:50%;
      background: rgba(6,182,212,.9);
      box-shadow:0 0 0 5px rgba(6,182,212,.16);
    }
    .timeline-card h3{margin:0; font-size:15.5px}
    .timeline-card p{margin:8px 0 0; color:var(--muted); font-size:13.6px}
    .timeline-items{
      display:flex; flex-direction:column; gap:10px; margin-top:12px;
    }
    .titem{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 10px;
      border-radius:14px;
      border:1px solid rgba(28,32,45,.08);
      background: rgba(255,255,255,.55);
    }
    .titem .bullet{
      width:10px; height:10px; border-radius:50%;
      background: var(--grad2);
      border:1px solid rgba(124,58,237,.20);
      margin-top:6px;
      flex:0 0 auto;
    }
    .titem strong{display:block; font-size:13.5px}
    .titem span{display:block; color:var(--muted); font-size:12.8px; margin-top:2px}

    .accordion{
      display:flex; flex-direction:column; gap:10px;
    }
    details.ac{
      border-radius:var(--radius);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.66);
      overflow:hidden;
      box-shadow: 0 12px 30px rgba(16,24,40,.05);
      transition: border-color .2s ease, transform .18s ease;
    }
    details.ac:hover{border-color: rgba(124,58,237,.22)}
    details.ac summary{
      list-style:none;
      cursor:pointer;
      padding:14px 14px;
      display:flex; align-items:center; justify-content:space-between; gap:14px;
      font-weight:900; font-size:14.2px;
    }
    details.ac summary::-webkit-details-marker{display:none}
    .sum-right{
      display:flex; align-items:center; gap:10px;
      color:var(--muted);
      font-weight:800;
      font-size:12.8px;
      white-space:nowrap;
    }
    .chev{
      width:18px; height:18px;
      border-radius:7px;
      background: rgba(124,58,237,.10);
      border:1px solid rgba(124,58,237,.18);
      display:flex; align-items:center; justify-content:center;
      transition: transform .18s ease;
      flex:0 0 auto;
    }
    details[open].ac .chev{transform: rotate(180deg)}
    .ac-body{
      padding:0 14px 14px;
      color:var(--muted);
      font-size:13.8px;
    }
    .ac-body p{margin:10px 0 0}
    .ac-body a{color:#3b2b74; font-weight:800; text-decoration:underline}

    .comment-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap:14px;
    }
    .comment{
      padding:16px;
      border-radius:var(--radius);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.66);
      box-shadow: 0 18px 40px rgba(16,24,40,.06);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
      position:relative;
      overflow:hidden;
    }
    .comment:hover{transform: translateY(-2px); box-shadow: 0 22px 56px rgba(16,24,40,.10); border-color: rgba(124,58,237,.22)}
    .comment .top{
      display:flex; align-items:center; justify-content:space-between; gap:12px;
      margin-bottom:10px;
    }
    .person{
      display:flex; gap:10px; align-items:center;
    }
    .avatar{
      width:42px; height:42px; border-radius:16px;
      background: rgba(124,58,237,.12);
      border:1px solid rgba(124,58,237,.18);
      display:flex; align-items:center; justify-content:center;
      font-weight:950;
      letter-spacing:-.5px;
      color:#2b2f3b;
    }
    .person strong{display:block; font-size:14px}
    .person span{display:block; color:var(--muted); font-size:12.6px; margin-top:2px}
    .stars{
      display:flex; gap:3px; align-items:center;
      color:#f59e0b;
      font-weight:900;
      font-size:12.8px;
      white-space:nowrap;
    }
    .quote{
      margin:0;
      color:var(--muted);
      font-size:13.8px;
    }

    .news-grid{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:18px;
      align-items:start;
    }
    .news-list{
      display:flex; flex-direction:column; gap:10px;
    }
    .news-item{
      display:flex; align-items:flex-start; justify-content:space-between; gap:14px;
      padding:14px;
      border-radius:var(--radius);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.66);
      box-shadow: 0 12px 30px rgba(16,24,40,.05);
      transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
    }
    .news-item:hover{transform: translateY(-2px); box-shadow: 0 22px 56px rgba(16,24,40,.10); border-color: rgba(124,58,237,.22)}
    .news-item .left{
      display:flex; flex-direction:column; gap:6px;
    }
    .news-item strong{
      font-size:14.2px;
      letter-spacing:.1px;
    }
    .news-item span{
      color:var(--muted);
      font-size:12.8px;
    }
    .news-item a{
      flex:0 0 auto;
      white-space:nowrap;
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.75);
      font-weight:850;
      font-size:13px;
      transition: transform .15s ease, box-shadow .15s ease, border-color .2s ease, background .2s ease;
    }
    .news-item a:hover{transform: translateY(-1px); box-shadow:0 16px 38px rgba(16,24,40,.10); border-color: rgba(124,58,237,.24)}
    .side-box{
      padding:16px;
      border-radius:var(--radius2);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.64);
      box-shadow: 0 18px 40px rgba(16,24,40,.06);
      position:relative;
      overflow:hidden;
    }
    .side-box::after{
      content:"";
      position:absolute; inset:-1px;
      background: radial-gradient(720px 260px at 20% 10%, rgba(124,58,237,.16), transparent 55%),
                  radial-gradient(560px 220px at 90% 40%, rgba(6,182,212,.14), transparent 52%);
      pointer-events:none;
    }
    .side-box > *{position:relative; z-index:1}
    .side-box h3{margin:0; font-size:16px}
    .side-box p{margin:10px 0 0; color:var(--muted); font-size:13.8px}
    .tag-cloud{
      display:flex; flex-wrap:wrap; gap:8px;
      margin-top:12px;
    }
    .tag2{
      font-size:12.6px;
      font-weight:800;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.70);
      color:#2b2f3b;
      transition: transform .15s ease, border-color .2s ease, background .2s ease;
      cursor:pointer;
    }
    .tag2:hover{transform: translateY(-1px); border-color: rgba(124,58,237,.24); background: rgba(124,58,237,.08)}

    form{
      display:grid; gap:12px;
      margin-top:12px;
    }
    .field-row{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:12px;
    }
    label{
      font-size:13px; font-weight:850; color:#2b2f3b;
      display:block; margin-bottom:6px;
    }
    input, select, textarea{
      width:100%;
      border-radius:14px;
      border:1px solid rgba(28,32,45,.12);
      background: rgba(255,255,255,.80);
      padding:12px 12px;
      font-size:14px;
      color:var(--text);
      outline:none;
      transition: box-shadow .15s ease, border-color .2s ease, transform .15s ease;
    }
    textarea{min-height:120px; resize:vertical}
    input:focus, select:focus, textarea:focus{
      box-shadow:0 0 0 4px var(--focus);
      border-color: rgba(124,58,237,.35);
    }
    .form-actions{
      display:flex; gap:12px; align-items:center; flex-wrap:wrap;
      margin-top:2px;
    }
    .form-note{color:var(--muted); font-size:12.8px; margin:0}
    .toast{
      position:fixed;
      left:50%; transform:translateX(-50%);
      bottom:18px;
      width:min(520px, calc(100% - 28px));
      background: rgba(17,24,39,.92);
      color:#fff;
      border-radius:18px;
      padding:12px 14px;
      box-shadow: 0 24px 60px rgba(0,0,0,.26);
      display:none;
      z-index:1000;
    }
    .toast.show{display:block; animation: pop .25s ease}
    @keyframes pop{
      from{opacity:0; transform: translateX(-50%) translateY(10px)}
      to{opacity:1; transform: translateX(-50%) translateY(0px)}
    }

    .footer{
      padding:22px 0 34px;
      border-top:1px solid rgba(28,32,45,.08);
      background: rgba(255,255,255,.40);
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.05fr .95fr;
      gap:18px;
      align-items:start;
    }
    .footer-left h3{margin:0; font-size:16px}
    .footer-left p{margin:10px 0 0; color:var(--muted); font-size:13.6px}
    .footer-links{
      display:flex; flex-wrap:wrap; gap:10px;
      margin-top:12px;
    }
    .footer-links a{
      padding:10px 12px;
      border-radius:14px;
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.70);
      color:#2b2f3b;
      font-weight:850;
      font-size:13px;
      transition: transform .15s ease, box-shadow .15s ease, border-color .2s ease;
      white-space:nowrap;
    }
    .footer-links a:hover{transform: translateY(-1px); box-shadow:0 16px 38px rgba(16,24,40,.10); border-color: rgba(124,58,237,.24)}
    .footer-right{
      padding:16px;
      border-radius:var(--radius2);
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.60);
      box-shadow: 0 18px 40px rgba(16,24,40,.06);
    }
    .contact-grid{
      display:grid; grid-template-columns: 1fr 1fr;
      gap:12px;
      align-items:start;
    }
    .contact-box{
      padding:12px;
      border-radius:16px;
      border:1px solid rgba(28,32,45,.10);
      background: rgba(255,255,255,.70);
    }
    .contact-box strong{display:flex; align-items:center; gap:8px; font-size:13.5px}
    .contact-box span{display:block; color:var(--muted); font-size:13px; margin-top:6px}
    .wechat-img{
      border-radius:16px;
      border:1px solid rgba(28,32,45,.10);
      background:#fff;
      padding:10px;
    }
    .copyright{
      margin-top:14px;
      color:var(--muted);
      font-size:12.6px;
      display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap;
    }

    .float-cs{
      position:fixed;
      right:16px;
      bottom:18px;
      z-index:80;
      display:flex; flex-direction:column; gap:10px;
      align-items:flex-end;
    }
    .float-cs a{
      display:inline-flex; align-items:center; gap:10px;
      border-radius:18px;
      padding:10px 12px;
      border:1px solid rgba(28,32,45,.12);
      background: rgba(255,255,255,.86);
      box-shadow: 0 18px 40px rgba(16,24,40,.14);
      font-weight:900; font-size:13px;
      transition: transform .15s ease, box-shadow .15s ease, border-color .2s ease;
      user-select:none;
    }
    .float-cs a:hover{transform: translateY(-2px); border-color: rgba(124,58,237,.28)}
    .float-cs .cs-dot{
      width:12px; height:12px; border-radius:50%;
      background: var(--grad3);
      box-shadow:0 0 0 6px rgba(124,58,237,.14);
    }
    .to-top{
      display:inline-flex; align-items:center; justify-content:center;
      width:44px; height:44px;
      border-radius:16px;
      border:1px solid rgba(28,32,45,.12);
      background: rgba(255,255,255,.88);
      box-shadow: 0 18px 40px rgba(16,24,40,.14);
      transition: transform .15s ease, border-color .2s ease;
      user-select:none;
    }
    .to-top:hover{transform: translateY(-2px); border-color: rgba(124,58,237,.28)}

    .reveal{
      opacity:0;
      transform: translateY(10px);
      transition: opacity .6s ease, transform .6s ease;
    }
    .reveal.show{
      opacity:1;
      transform: translateY(0px);
    }

    @media (max-width: 980px){
      .hero-grid{grid-template-columns: 1fr; }
      .hero-left, .hero-right{min-height: unset}
      .hero-title{font-size:34px}
      .hero-meta{grid-template-columns: 1fr}
      .grid-3{grid-template-columns: 1fr}
      .grid-2{grid-template-columns: 1fr}
      .steps{grid-template-columns: 1fr 1fr}
      .timeline{grid-template-columns: 1fr}
      .comment-grid{grid-template-columns: 1fr}
      .news-grid{grid-template-columns: 1fr}
      .steps{gap:12px}
      .grid-4{grid-template-columns: 1fr 1fr}
      .footer-grid{grid-template-columns: 1fr}
      table{min-width: 740px}
    }
    @media (max-width: 720px){
      .nav-links{display:none}
      .mobile-toggle{display:inline-flex}
      .mobile-panel{display:block}
      .brand{min-width: auto}
      .hero-left{padding:18px}
      .hero-right{padding:14px}
      .steps{grid-template-columns: 1fr}
      .field-row{grid-template-columns: 1fr}
      .contact-grid{grid-template-columns: 1fr}
      .float-cs{right:12px; bottom:14px}
      .float-cs a{padding:10px 10px}
      .hero-title{font-size:30px}
    }
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      .reveal{transition:none}
      .btn, .card, .metric, .mini, .news-item, .comment, .step, .tab, .tag2{transition:none}
    }