:root{
      --bg0:#fbf7ff;
      --bg1:#f5fbff;
      --card:#ffffff;
      --text:#1f2937;
      --muted:#5b6776;
      --muted2:#7a8696;
      --border:rgba(17,24,39,.12);
      --shadow: 0 18px 45px rgba(17,24,39,.08);
      --shadow2: 0 10px 28px rgba(17,24,39,.10);
      --ring: rgba(99,102,241,.35);
      --brand1:#7c3aed;
      --brand2:#06b6d4;
      --brand3:#f97316;
      --brand4:#22c55e;
      --btn:#0f172a;
      --btnText:#ffffff;
      --link:#2563eb;
      --radius:18px;
      --radius2:26px;
      --container: 1120px;
      --gap: 18px;
      --ease: cubic-bezier(.2,.8,.2,1);
    }
    *{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 CJK SC", Roboto, Arial, sans-serif;
      color:var(--text);
      background:
        radial-gradient(900px 500px at 20% 0%, rgba(124,58,237,.16), transparent 60%),
        radial-gradient(850px 520px at 90% 10%, rgba(6,182,212,.14), transparent 55%),
        radial-gradient(900px 600px at 50% 110%, rgba(249,115,22,.10), transparent 55%),
        linear-gradient(180deg, var(--bg0), var(--bg1));
      min-height:100vh;
    }
    a{color:inherit}
    .container{
      width:100%;
      max-width:var(--container);
      padding:0 18px;
      margin:0 auto;
    }

    /* Header */
    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      backdrop-filter:saturate(160%) blur(12px);
      background:rgba(255,255,255,.65);
      border-bottom:1px solid rgba(17,24,39,.08);
    }
    .topbar-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:14px 0;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width: 240px;
    }
    .ai-page-logo{
      width:44px;
      height:44px;
      border-radius:12px;
      background:rgba(124,58,237,.10);
      padding:8px;
      object-fit:contain;
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .brand-name{
      font-weight:850;
      letter-spacing:.2px;
      font-size:15px;
    }
    .brand-sub{
      font-size:12.5px;
      color:var(--muted);
      margin-top:4px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width: 260px;
    }

    .nav{
      display:flex;
      align-items:center;
      gap:18px;
      flex:1;
      justify-content:center;
    }
    .nav a{
      text-decoration:none;
      font-size:13.5px;
      color:rgba(31,41,55,.84);
      padding:10px 10px;
      border-radius:12px;
      transition:background .2s var(--ease), color .2s var(--ease);
      white-space:nowrap;
    }
    .nav a:hover{background:rgba(124,58,237,.08); color:rgba(31,41,55,1)}
    .header-actions{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:10px;
      min-width: 240px;
    }
    .ghost-btn{
      border:1px solid rgba(17,24,39,.12);
      background:rgba(255,255,255,.55);
      border-radius:999px;
      padding:10px 12px;
      font-size:13.5px;
      color:rgba(31,41,55,.92);
      cursor:pointer;
      transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
      display:inline-flex;
      align-items:center;
      gap:8px;
      text-decoration:none;
      white-space:nowrap;
    }
    .ghost-btn:active{transform:translateY(1px)}
    .primary-btn{
      border:1px solid rgba(15,23,42,.18);
      background: linear-gradient(135deg, rgba(124,58,237,.95), rgba(6,182,212,.92));
      color:var(--btnText);
      border-radius:999px;
      padding:10px 14px;
      font-size:13.5px;
      cursor:pointer;
      transition:transform .18s var(--ease), box-shadow .18s var(--ease), filter .18s var(--ease);
      display:inline-flex;
      align-items:center;
      gap:8px;
      text-decoration:none;
      box-shadow:0 12px 28px rgba(124,58,237,.18);
      white-space:nowrap;
    }
    .primary-btn:hover{filter:saturate(115%)}
    .primary-btn:active{transform:translateY(1px)}
    .icon-dot{
      width:10px;height:10px;border-radius:50%;
      background:rgba(255,255,255,.92);
      box-shadow:0 0 0 4px rgba(255,255,255,.18);
    }

    .mobile-toggle{
      display:none;
      border:1px solid rgba(17,24,39,.12);
      background:rgba(255,255,255,.6);
      width:42px;height:42px;
      border-radius:12px;
      cursor:pointer;
      align-items:center; justify-content:center;
      transition:transform .18s var(--ease), background .18s var(--ease);
    }
    .mobile-toggle:active{transform:translateY(1px)}
    .hamburger{
      width:18px;height:12px; position:relative;
    }
    .hamburger span{
      position:absolute; left:0; right:0; height:2px;
      background:rgba(17,24,39,.78);
      border-radius:999px;
      transition:transform .22s var(--ease), top .22s var(--ease), opacity .22s var(--ease);
    }
    .hamburger span:nth-child(1){top:0}
    .hamburger span:nth-child(2){top:5px}
    .hamburger span:nth-child(3){top:10px}

    .mobile-panel{
      display:none;
      padding:0 0 14px 0;
    }
    .mobile-panel-inner{
      background:rgba(255,255,255,.75);
      border:1px solid rgba(17,24,39,.10);
      border-radius:18px;
      padding:12px;
      box-shadow:0 14px 40px rgba(17,24,39,.10);
    }
    .mobile-links{
      display:flex;
      flex-direction:column;
      gap:6px;
    }
    .mobile-links a{
      text-decoration:none;
      padding:11px 12px;
      border-radius:14px;
      font-size:14px;
      color:rgba(31,41,55,.92);
      border:1px solid transparent;
      transition:background .2s var(--ease), border-color .2s var(--ease);
    }
    .mobile-links a:hover{
      background:rgba(124,58,237,.08);
      border-color:rgba(124,58,237,.18);
    }
    .mobile-actions{
      display:flex;
      gap:10px;
      margin-top:12px;
    }
    .mobile-actions .ghost-btn,.mobile-actions .primary-btn{flex:1; justify-content:center}

    /* Hero */
    .hero{
      padding:34px 0 14px 0;
    }
    .hero-grid{
      display:grid;
      grid-template-columns: 1.12fr .88fr;
      gap:20px;
      align-items:stretch;
    }
    .hero-card{
      border-radius: var(--radius2);
      background:
        radial-gradient(900px 520px at 15% 0%, rgba(124,58,237,.20), transparent 55%),
        radial-gradient(760px 460px at 92% 8%, rgba(6,182,212,.20), transparent 56%),
        linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.55));
      border: 1px solid rgba(17,24,39,.10);
      box-shadow: var(--shadow);
      padding:24px;
      position:relative;
      overflow:hidden;
    }
    .hero-card::before{
      content:"";
      position:absolute; inset:-2px;
      background:
        linear-gradient(135deg, rgba(124,58,237,.18), rgba(6,182,212,.14), rgba(249,115,22,.10));
      filter: blur(18px);
      opacity:.55;
      pointer-events:none;
    }
    .hero-card > *{position:relative; z-index:1}
    .kicker{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background:rgba(255,255,255,.55);
      color:rgba(31,41,55,.90);
      font-size:13px;
      font-weight:650;
    }
    .kicker-badge{
      width:26px;height:26px;border-radius:10px;
      background: linear-gradient(135deg, rgba(124,58,237,.95), rgba(6,182,212,.92));
      display:flex; align-items:center; justify-content:center;
      box-shadow: 0 10px 22px rgba(124,58,237,.18);
    }
    .kicker-badge svg{display:block}
    .hero-title{
      margin:14px 0 10px 0;
      font-size:38px;
      line-height:1.12;
      letter-spacing:-.6px;
      font-weight:900;
    }
    .hero-sub{
      margin:0;
      color:rgba(31,41,55,.78);
      font-size:15.5px;
      line-height:1.75;
      max-width: 66ch;
    }
    .hero-actions{
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      margin-top:16px;
      align-items:center;
    }
    .btn-large{
      padding:12px 16px;
      font-size:14.5px;
    }
    .btn-secondary{
      border:1px solid rgba(17,24,39,.12);
      background:rgba(255,255,255,.65);
      color:rgba(31,41,55,.94);
      border-radius:999px;
      padding:12px 16px;
      font-size:14.5px;
      cursor:pointer;
      transition:transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease);
      display:inline-flex; align-items:center; gap:10px;
      text-decoration:none;
      white-space:nowrap;
    }
    .btn-secondary:hover{box-shadow:0 12px 24px rgba(17,24,39,.10)}
    .btn-secondary:active{transform:translateY(1px)}
    .hero-meta{
      margin-top:18px;
      display:flex;
      gap:12px;
      flex-wrap:wrap;
      align-items:center;
    }
    .meta-pill{
      display:flex; align-items:center; gap:10px;
      padding:10px 12px;
      background:rgba(255,255,255,.55);
      border:1px solid rgba(17,24,39,.10);
      border-radius:16px;
      min-width: 190px;
    }
    .meta-ico{
      width:34px;height:34px;border-radius:14px;
      background:rgba(124,58,237,.10);
      display:flex; align-items:center; justify-content:center;
      border:1px solid rgba(124,58,237,.18);
      flex:0 0 auto;
    }
    .meta-ico svg{display:block}
    .meta-text{
      display:flex; flex-direction:column; line-height:1.2;
    }
    .meta-text strong{font-size:13.5px}
    .meta-text span{font-size:12.5px; color:var(--muted); margin-top:4px}

    .side-panel{
      border-radius: var(--radius2);
      background: rgba(255,255,255,.62);
      border: 1px solid rgba(17,24,39,.10);
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
      padding:18px;
      overflow:hidden;
      position:relative;
    }
    .side-panel::after{
      content:"";
      position:absolute; right:-120px; top:-120px;
      width:260px; height:260px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(124,58,237,.28), transparent 60%);
      pointer-events:none;
      opacity:.9;
    }
    .side-panel > *{position:relative; z-index:1}
    .side-title{
      display:flex; align-items:center; justify-content:space-between; gap:12px;
      margin-bottom:10px;
    }
    .side-title h2{
      margin:0;
      font-size:15px;
      font-weight:850;
      letter-spacing:.2px;
    }
    .signal{
      display:flex; gap:6px; align-items:center;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background:rgba(255,255,255,.6);
      color:rgba(31,41,55,.85);
      font-size:12.5px;
      white-space:nowrap;
    }
    .bars{display:flex; gap:4px; align-items:flex-end}
    .bars i{
      width:4px; border-radius:999px;
      background: linear-gradient(180deg, rgba(124,58,237,.95), rgba(6,182,212,.85));
      height:10px;
      animation: pulseBars 1.4s var(--ease) infinite;
      opacity:.85;
    }
    .bars i:nth-child(2){height:16px; animation-delay:.12s}
    .bars i:nth-child(3){height:12px; animation-delay:.24s}
    @keyframes pulseBars{
      0%,100%{transform:translateY(0); opacity:.85}
      50%{transform:translateY(-4px); opacity:1}
    }

    .stat-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0,1fr));
      gap:12px;
      margin-top:10px;
    }
    .stat{
      background:rgba(255,255,255,.58);
      border:1px solid rgba(17,24,39,.10);
      border-radius:18px;
      padding:14px 12px;
      transition:transform .25s var(--ease), box-shadow .25s var(--ease);
    }
    .stat:hover{transform:translateY(-2px); box-shadow:0 14px 30px rgba(17,24,39,.10)}
    .stat strong{display:block; font-size:18px; letter-spacing:-.2px}
    .stat span{display:block; margin-top:8px; color:var(--muted); font-size:12.5px; line-height:1.4}
    .mini-list{
      margin-top:14px;
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .mini-item{
      display:flex; gap:10px; align-items:flex-start;
      padding:10px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background:rgba(255,255,255,.55);
    }
    .mini-check{
      width:22px;height:22px; border-radius:8px;
      background:rgba(34,197,94,.12);
      border:1px solid rgba(34,197,94,.25);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
      margin-top:2px;
    }
    .mini-item strong{font-size:13.5px}
    .mini-item span{display:block; margin-top:4px; color:var(--muted); font-size:12.5px; line-height:1.5}

    /* Sections */
    main{padding-bottom:28px}
    section{padding:28px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:14px;
      margin-bottom:14px;
    }
    .section-title{
      margin:0;
      font-size:22px;
      font-weight:900;
      letter-spacing:-.3px;
    }
    .section-desc{
      margin:0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.7;
      max-width: 62ch;
    }
    .pillbar{
      display:flex; gap:8px; flex-wrap:wrap; justify-content:flex-end;
    }
    .pill{
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background:rgba(255,255,255,.6);
      color:rgba(31,41,55,.86);
      font-size:12.5px;
      white-space:nowrap;
    }

    .fade-in{
      opacity:0;
      transform: translateY(10px);
      transition: opacity .6s var(--ease), transform .6s var(--ease);
    }
    .fade-in.is-visible{
      opacity:1;
      transform: translateY(0);
    }

    /* Cards */
    .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-radius: var(--radius);
      background: rgba(255,255,255,.65);
      border:1px solid rgba(17,24,39,.10);
      box-shadow: 0 10px 25px rgba(17,24,39,.06);
      padding:16px;
    }
    .card-hover{
      transition: transform .25s var(--ease), box-shadow .25s var(--ease);
    }
    .card-hover:hover{
      transform: translateY(-2px);
      box-shadow: 0 20px 45px rgba(17,24,39,.10);
    }
    .card-ico{
      width:44px;height:44px;border-radius:16px;
      display:flex; align-items:center; justify-content:center;
      background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(6,182,212,.14));
      border: 1px solid rgba(124,58,237,.18);
      margin-bottom:12px;
    }
    .card h3{
      margin:0;
      font-size:15.5px;
      font-weight:900;
      letter-spacing:-.15px;
    }
    .card p{
      margin:10px 0 0 0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.7;
    }
    .card ul{
      margin:12px 0 0 0;
      padding-left:18px;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.8;
    }
    .card li{margin:4px 0}

    /* Steps */
    .steps{
      display:grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap:14px;
    }
    .step{
      padding:16px;
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      position:relative;
      overflow:hidden;
    }
    .step::after{
      content:"";
      position:absolute; left:-40px; top:-60px;
      width:120px;height:120px;border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(124,58,237,.20), transparent 60%);
      opacity:.9;
      pointer-events:none;
    }
    .step > *{position:relative; z-index:1}
    .step-num{
      display:inline-flex;
      align-items:center; justify-content:center;
      width:38px;height:38px;
      border-radius:14px;
      background:rgba(124,58,237,.10);
      border:1px solid rgba(124,58,237,.18);
      font-weight:950;
      color:rgba(31,41,55,.95);
      margin-bottom:10px;
    }
    .step h3{margin:0; font-size:15.5px; font-weight:900}
    .step p{margin:8px 0 0 0; color:var(--muted); font-size:13.5px; line-height:1.7}

    /* Comparison */
    .compare-wrap{
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.60);
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
      overflow:hidden;
    }
    .compare-top{
      padding:18px 18px 0 18px;
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:14px;
      flex-wrap:wrap;
    }
    .rating{
      display:flex; flex-direction:column; gap:8px;
      min-width: 260px;
    }
    .rating-row{
      display:flex; align-items:center; gap:10px; flex-wrap:wrap;
    }
    .stars{
      display:flex; gap:6px; align-items:center;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background:rgba(255,255,255,.62);
      font-weight:900;
    }
    .stars svg{display:block}
    .score{
      font-size:28px;
      font-weight:1000;
      letter-spacing:-.6px;
    }
    .score span{
      font-size:13px;
      color:var(--muted);
      font-weight:700;
      margin-left:10px;
      letter-spacing:0;
    }
    .compare-note{
      color:var(--muted);
      font-size:13.5px;
      line-height:1.7;
      max-width: 62ch;
      margin:0;
    }

    .compare-table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      margin-top:14px;
      overflow:auto;
    }
    .compare-table thead th{
      text-align:left;
      padding:14px 16px;
      font-size:13.5px;
      color:rgba(31,41,55,.90);
      background: linear-gradient(180deg, rgba(124,58,237,.10), rgba(6,182,212,.06));
      border-bottom:1px solid rgba(17,24,39,.10);
      white-space:nowrap;
    }
    .compare-table tbody td{
      padding:14px 16px;
      border-bottom:1px solid rgba(17,24,39,.08);
      color:rgba(31,41,55,.86);
      font-size:13.5px;
      line-height:1.6;
      vertical-align:top;
      background: rgba(255,255,255,.55);
    }
    .compare-table tbody tr:last-child td{border-bottom:none}
    .tag-good{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(34,197,94,.22);
      background: rgba(34,197,94,.10);
      font-weight:800;
      color:rgba(16,120,54,.95);
      white-space:nowrap;
    }
    .tag-mid{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(245,158,11,.25);
      background: rgba(245,158,11,.10);
      font-weight:800;
      color:rgba(146,64,14,.95);
      white-space:nowrap;
    }
    .tag-weak{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(239,68,68,.22);
      background: rgba(239,68,68,.10);
      font-weight:800;
      color:rgba(153,27,27,.95);
      white-space:nowrap;
    }
    .compare-actions{
      display:flex;
      gap:12px;
      padding:16px 18px 18px 18px;
      justify-content:flex-end;
      flex-wrap:wrap;
      background: linear-gradient(180deg, rgba(255,255,255,.40), rgba(255,255,255,.62));
    }

    /* Timeline */
    .timeline{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
      align-items:start;
    }
    .timeline-card{
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      padding:16px;
    }
    .timeline-card h3{margin:0; font-size:15.5px; font-weight:900}
    .timeline-card p{margin:10px 0 0 0; color:var(--muted); font-size:13.5px; line-height:1.7}
    .timeline-steps{
      margin-top:12px;
      display:flex; flex-direction:column; gap:10px;
    }
    .titem{
      display:flex; gap:12px; align-items:flex-start;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .tbullet{
      width:34px;height:34px;border-radius:14px;
      display:flex; align-items:center; justify-content:center;
      background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(6,182,212,.12));
      border:1px solid rgba(124,58,237,.18);
      font-weight:950;
    }
    .titem strong{display:block; font-size:13.5px}
    .titem span{display:block; margin-top:4px; color:var(--muted); font-size:12.5px; line-height:1.6}

    /* Article list */
    .article-list{
      display:flex;
      flex-direction:column;
      gap:10px;
    }
    .article-item{
      display:flex;
      align-items:flex-start;
      justify-content:space-between;
      gap:12px;
      padding:14px 14px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.58);
      transition:transform .25s var(--ease), box-shadow .25s var(--ease);
    }
    .article-item:hover{transform: translateY(-2px); box-shadow:0 18px 40px rgba(17,24,39,.10)}
    .article-left{display:flex; gap:12px; align-items:flex-start}
    .article-ico{
      width:40px; height:40px; border-radius:16px;
      background: rgba(124,58,237,.10);
      border:1px solid rgba(124,58,237,.18);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
    }
    .article-item h3{
      margin:0;
      font-size:14.5px;
      font-weight:900;
      letter-spacing:-.1px;
    }
    .article-item p{
      margin:6px 0 0 0;
      color:var(--muted);
      font-size:13px;
      line-height:1.6;
      max-width: 64ch;
    }
    .article-link{
      text-decoration:none;
      font-size:13.5px;
      font-weight:800;
      color:rgba(37,99,235,.98);
      padding:10px 12px;
      border-radius:999px;
      border:1px solid rgba(37,99,235,.20);
      background: rgba(37,99,235,.06);
      white-space:nowrap;
    }

    /* Case gallery */
    .case-grid{
      display:grid;
      grid-template-columns: 1.15fr .85fr;
      gap:14px;
      align-items:stretch;
    }
    .case-main{
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.60);
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
      padding:16px;
      overflow:hidden;
      position:relative;
    }
    .case-main::before{
      content:"";
      position:absolute; inset:-2px;
      background:
        radial-gradient(700px 420px at 15% 0%, rgba(124,58,237,.22), transparent 55%),
        radial-gradient(700px 420px at 95% 18%, rgba(6,182,212,.18), transparent 50%),
        radial-gradient(820px 520px at 45% 120%, rgba(249,115,22,.12), transparent 60%);
      opacity:.55;
      pointer-events:none;
    }
    .case-main > *{position:relative; z-index:1}
    .case-main-top{
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px; flex-wrap:wrap;
      margin-bottom:10px;
    }
    .case-main h3{margin:0; font-size:16px; font-weight:1000}
    .case-main p{margin:8px 0 0 0; color:var(--muted); font-size:13.5px; line-height:1.7; max-width: 70ch}
    .case-bullets{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:10px;
      margin-top:12px;
    }
    .bullet{
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .bullet strong{display:block; font-size:13.5px}
    .bullet span{display:block; margin-top:6px; color:var(--muted); font-size:12.5px; line-height:1.6}
    .case-side{
      display:flex; flex-direction:column; gap:12px;
    }
    .stepper{
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.60);
      padding:16px;
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
    }
    .stepper h3{margin:0; font-size:16px; font-weight:1000}
    .progressbar{
      margin-top:10px;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .progress-row{
      display:flex; align-items:center; justify-content:space-between; gap:12px;
      margin-bottom:10px;
    }
    .progress-row span{color:var(--muted); font-size:12.5px}
    .bar{
      height:12px;
      border-radius:999px;
      background: rgba(17,24,39,.08);
      overflow:hidden;
      border:1px solid rgba(17,24,39,.08);
    }
    .bar i{
      display:block;
      height:100%;
      width: 72%;
      background: linear-gradient(90deg, rgba(124,58,237,.95), rgba(6,182,212,.90));
      border-radius:999px;
    }
    .model-tags{
      margin-top:12px;
      display:flex; flex-wrap:wrap; gap:8px;
    }
    .model-tag{
      font-size:12.5px;
      color:rgba(31,41,55,.88);
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.58);
      white-space:nowrap;
    }

    /* Token card */
    .token-grid{
      display:grid;
      grid-template-columns: 1fr 1fr;
      gap:14px;
      align-items:stretch;
    }
    .token-card{
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
      padding:16px;
      overflow:hidden;
      position:relative;
    }
    .token-card::before{
      content:"";
      position:absolute; right:-120px; bottom:-160px;
      width:320px; height:320px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(6,182,212,.22), transparent 60%);
      pointer-events:none;
      opacity:.9;
    }
    .token-card > *{position:relative; z-index:1}
    .token-head{
      display:flex; align-items:flex-start; justify-content:space-between; gap:12px; flex-wrap:wrap;
    }
    .token-head h3{margin:0; font-size:16px; font-weight:1000}
    .token-head p{margin:8px 0 0 0; color:var(--muted); font-size:13.5px; line-height:1.7}
    .token-table-wrap{
      margin-top:12px;
      overflow:auto;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.54);
    }
    table.token-table{
      width:100%;
      border-collapse:separate;
      border-spacing:0;
      min-width: 520px;
    }
    .token-table thead th{
      text-align:left;
      padding:12px 14px;
      font-size:13px;
      background: linear-gradient(180deg, rgba(6,182,212,.10), rgba(124,58,237,.06));
      border-bottom:1px solid rgba(17,24,39,.10);
      white-space:nowrap;
    }
    .token-table tbody td{
      padding:12px 14px;
      border-bottom:1px solid rgba(17,24,39,.08);
      color:rgba(31,41,55,.88);
      font-size:13.5px;
      line-height:1.6;
      vertical-align:top;
    }
    .token-table tbody tr:last-child td{border-bottom:none}
    .token-score{
      display:inline-flex; align-items:center; gap:8px;
      padding:8px 10px; border-radius:999px;
      border:1px solid rgba(124,58,237,.20);
      background: rgba(124,58,237,.08);
      font-weight:900;
      white-space:nowrap;
    }
    .token-score b{font-size:14px}
    .token-score span{font-size:12px; color:var(--muted); font-weight:800}
    .token-actions{
      display:flex; gap:12px; flex-wrap:wrap; margin-top:14px;
      align-items:center; justify-content:flex-start;
    }
    .token-actions a{
      text-decoration:none;
    }

    /* FAQ */
    .faq-wrap{
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
      overflow:hidden;
    }
    details.faq{
      border-top:1px solid rgba(17,24,39,.08);
      padding:0 14px;
    }
    details.faq:first-child{border-top:none}
    details.faq summary{
      list-style:none;
      padding:16px 0;
      cursor:pointer;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      user-select:none;
      outline:none;
    }
    details.faq summary::-webkit-details-marker{display:none}
    .faq-q{
      font-weight:950;
      font-size:14.5px;
      letter-spacing:-.15px;
    }
    .faq-icon{
      width:36px; height:36px; border-radius:14px;
      background: rgba(124,58,237,.10);
      border:1px solid rgba(124,58,237,.18);
      display:flex; align-items:center; justify-content:center;
      flex:0 0 auto;
      transition:transform .25s var(--ease);
    }
    details[open] .faq-icon{transform: rotate(45deg)}
    .faq-a{
      padding:0 0 16px 0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.75;
    }

    /* Testimonials */
    .quote-grid{
      display:grid;
      grid-template-columns: repeat(3, minmax(0,1fr));
      gap:14px;
    }
    .quote{
      border-radius: var(--radius);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.62);
      padding:16px;
      box-shadow: 0 10px 25px rgba(17,24,39,.06);
      position:relative;
      overflow:hidden;
      transition: transform .25s var(--ease), box-shadow .25s var(--ease);
    }
    .quote:hover{transform:translateY(-2px); box-shadow:0 20px 45px rgba(17,24,39,.10)}
    .quote::after{
      content:"";
      position:absolute; left:-60px; top:-80px;
      width:180px; height:180px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(249,115,22,.16), transparent 60%);
      opacity:.8;
      pointer-events:none;
    }
    .quote > *{position:relative; z-index:1}
    .quote-top{
      display:flex; align-items:center; justify-content:space-between; gap:12px;
      margin-bottom:10px;
    }
    .avatar{
      width:44px; height:44px; border-radius:16px;
      background: linear-gradient(135deg, rgba(124,58,237,.18), rgba(6,182,212,.14));
      border:1px solid rgba(124,58,237,.18);
      display:flex; align-items:center; justify-content:center;
      font-weight:1000;
      color:rgba(31,41,55,.92);
      flex:0 0 auto;
    }
    .who{
      display:flex; flex-direction:column; line-height:1.2;
      flex:1;
      margin-left:10px;
    }
    .who strong{font-size:13.5px}
    .who span{margin-top:5px; font-size:12.5px; color:var(--muted)}
    .score-mini{
      padding:8px 10px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.58);
      font-weight:950;
      white-space:nowrap;
      font-size:12.5px;
      color:rgba(31,41,55,.90);
    }
    .quote p{
      margin:0;
      color:rgba(31,41,55,.78);
      font-size:13.5px;
      line-height:1.8;
    }

    /* Contact form */
    .form-grid{
      display:grid;
      grid-template-columns: 1fr .95fr;
      gap:14px;
      align-items:stretch;
    }
    form{
      display:flex;
      flex-direction:column;
      gap:12px;
    }
    .field{
      display:flex;
      flex-direction:column;
      gap:8px;
    }
    label{
      font-size:13.5px;
      font-weight:900;
      color:rgba(31,41,55,.92);
    }
    input, select, textarea{
      width:100%;
      padding:12px 12px;
      border-radius:14px;
      border:1px solid rgba(17,24,39,.14);
      background: rgba(255,255,255,.70);
      color:rgba(31,41,55,.95);
      font-size:14px;
      outline:none;
      transition: box-shadow .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
    }
    input:focus, select:focus, textarea:focus{
      border-color: rgba(99,102,241,.45);
      box-shadow:0 0 0 4px var(--ring);
      background: rgba(255,255,255,.84);
    }
    textarea{min-height:110px; resize:vertical}
    .form-actions{
      display:flex; gap:12px; flex-wrap:wrap; align-items:center; justify-content:flex-start;
      margin-top:6px;
    }
    .help-card{
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.60);
      box-shadow: 0 14px 35px rgba(17,24,39,.08);
      padding:16px;
      overflow:hidden;
      position:relative;
    }
    .help-card::before{
      content:"";
      position:absolute; left:-140px; bottom:-180px;
      width:360px; height:360px; border-radius:50%;
      background: radial-gradient(circle at 30% 30%, rgba(124,58,237,.22), transparent 60%);
      opacity:.8; pointer-events:none;
    }
    .help-card > *{position:relative; z-index:1}
    .help-card h3{margin:0; font-size:16px; font-weight:1000}
    .help-card p{margin:10px 0 0 0; color:var(--muted); font-size:13.5px; line-height:1.7}
    .help-rows{
      margin-top:12px;
      display:flex; flex-direction:column; gap:10px;
    }
    .help-row{
      display:flex; align-items:flex-start; gap:12px;
      padding:12px 12px;
      border-radius:16px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.56);
    }
    .help-row .mini-check{margin-top:0}
    .help-row strong{display:block; font-size:13.5px}
    .help-row span{display:block; margin-top:4px; color:var(--muted); font-size:12.5px; line-height:1.6}

    /* Tag cloud */
    .tag-cloud{
      display:flex; flex-wrap:wrap; gap:10px;
    }
    .tag-cloud a{
      text-decoration:none;
      padding:10px 12px;
      border-radius:999px;
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.58);
      color:rgba(31,41,55,.88);
      font-size:13.5px;
      transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
    }
    .tag-cloud a:hover{
      transform: translateY(-2px);
      border-color: rgba(124,58,237,.22);
      box-shadow: 0 18px 40px rgba(17,24,39,.10);
    }

    /* Footer */
    footer{
      padding:22px 0 30px 0;
      border-top:1px solid rgba(17,24,39,.08);
      background: rgba(255,255,255,.52);
    }
    .footer-grid{
      display:grid;
      grid-template-columns: 1.1fr .9fr;
      gap:14px;
      align-items:start;
    }
    .footer-left{
      padding:16px;
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.64);
      box-shadow: 0 10px 25px rgba(17,24,39,.06);
    }
    .footer-brand{
      display:flex; align-items:center; gap:12px;
    }
    .footer-brand .ai-page-logo{
      width:40px;height:40px;border-radius:14px;padding:8px;
    }
    .footer-left p{
      margin:12px 0 0 0;
      color:var(--muted);
      font-size:13.5px;
      line-height:1.7;
      max-width: 72ch;
    }
    .footer-right{
      padding:16px;
      border-radius: var(--radius2);
      border:1px solid rgba(17,24,39,.10);
      background: rgba(255,255,255,.64);
      box-shadow: 0 10px 25px rgba(17,24,39,.06);
    }
    .footer-links{
      display:flex; flex-wrap:wrap; gap:10px;
      margin-top:10px;
    }
    .footer-links a{
      text-decoration:none;
      font-size:13.5px;
      color:rgba(31,41,55,.90);
      border:1px solid rgba(17,24,39,.12);
      background: rgba(255,255,255,.60);
      padding:10px 12px;
      border-radius:999px;
      transition:transform .2s var(--ease), box-shadow .2s var(--ease);
    }
    .footer-links a:hover{transform:translateY(-2px); box-shadow:0 18px 40px rgba(17,24,39,.10)}
    .footer-bottom{
      margin-top:14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      color:var(--muted2);
      font-size:12.5px;
      flex-wrap:wrap;
    }
    .fineprint{
      display:flex; gap:10px; align-items:center; flex-wrap:wrap;
    }
    .sep{
      width:6px;height:6px;border-radius:50%;
      background:rgba(17,24,39,.20);
    }

    /* Floating customer */
    .float-customer{
      position:fixed;
      right:14px;
      bottom:16px;
      z-index:80;
      display:flex;
      flex-direction:column;
      gap:10px;
      align-items:flex-end;
      pointer-events:none;
    }
    .float-customer a,.float-customer button{
      pointer-events:auto;
    }
    .float-btn{
      border:none;
      cursor:pointer;
      background: linear-gradient(135deg, rgba(124,58,237,.96), rgba(6,182,212,.92));
      color:#fff;
      padding:12px 14px;
      border-radius:16px;
      box-shadow: 0 18px 40px rgba(124,58,237,.25);
      display:flex;
      align-items:center;
      gap:10px;
      font-weight:950;
      transition: transform .18s var(--ease), filter .18s var(--ease);
    }
    .float-btn:active{transform:translateY(1px)}
    .float-btn svg{display:block}
    .qr-panel{
      width:240px;
      border-radius: 18px;
      border:1px solid rgba(17,24,39,.12);
      background: rgba(255,255,255,.80);
      box-shadow: 0 22px 60px rgba(17,24,39,.16);
      overflow:hidden;
      display:none;
      transform-origin: 100% 100%;
      animation: popIn .18s var(--ease) both;
    }
    @keyframes popIn{
      from{opacity:0; transform:scale(.98) translateY(6px)}
      to{opacity:1; transform:scale(1) translateY(0)}
    }
    .qr-top{
      padding:10px 12px;
      display:flex; align-items:center; justify-content:space-between; gap:10px;
      border-bottom:1px solid rgba(17,24,39,.08);
    }
    .qr-top strong{font-size:13.5px}
    .qr-close{
      width:30px;height:30px;border-radius:12px;
      border:1px solid rgba(17,24,39,.12);
      background: rgba(255,255,255,.7);
      cursor:pointer;
      display:flex; align-items:center; justify-content:center;
      transition: transform .18s var(--ease), background .18s var(--ease);
    }
    .qr-close:active{transform:translateY(1px)}
    .qr-body{
      padding:12px;
      display:flex; flex-direction:column; gap:10px;
      align-items:center;
    }
    .qr-body img{
      width:180px;
      height:auto;
      border-radius:14px;
      border:1px solid rgba(17,24,39,.10);
      background:#fff;
    }
    .qr-body span{
      color:var(--muted);
      font-size:12.5px;
      text-align:center;
      line-height:1.4;
    }

    /* Back to top */
    .to-top{
      position:fixed;
      right:14px;
      bottom:86px;
      z-index:70;
      display:none;
    }
    .to-top button{
      border:none;
      cursor:pointer;
      width:44px;height:44px;
      border-radius:16px;
      background: rgba(255,255,255,.78);
      border:1px solid rgba(17,24,39,.12);
      box-shadow: 0 18px 40px rgba(17,24,39,.12);
      transition: transform .18s var(--ease), background .18s var(--ease);
    }
    .to-top button:active{transform:translateY(1px)}
    .to-top svg{display:block; margin:0 auto}

    /* Responsive */
    @media (max-width: 980px){
      .nav{display:none}
      .mobile-toggle{display:flex}
      .mobile-panel{display:block}
      .hero-grid{grid-template-columns: 1fr}
      .hero-title{font-size:32px}
      .grid-3{grid-template-columns: repeat(2, minmax(0,1fr))}
      .steps{grid-template-columns: repeat(2, minmax(0,1fr))}
      .case-grid{grid-template-columns: 1fr}
      .case-bullets{grid-template-columns: repeat(2, minmax(0,1fr))}
      .quote-grid{grid-template-columns: repeat(2, minmax(0,1fr))}
      .token-grid{grid-template-columns: 1fr}
      .form-grid{grid-template-columns: 1fr}
      .footer-grid{grid-template-columns: 1fr}
      .header-actions{min-width:auto}
      .brand{min-width:auto}
      .mobile-actions .ghost-btn,.mobile-actions .primary-btn{flex:1}
    }
    @media (max-width: 560px){
      .grid-3{grid-template-columns: 1fr}
      .steps{grid-template-columns: 1fr}
      .quote-grid{grid-template-columns: 1fr}
      .case-bullets{grid-template-columns: 1fr}
      .meta-pill{min-width: 100%}
      .hero-card{padding:18px}
      .side-panel{padding:14px}
      .hero-title{font-size:28px}
      .float-customer{right:10px; bottom:12px}
      .to-top{right:10px; bottom:72px}
      .qr-panel{width: 220px}
      .qr-body img{width:170px}
    }

    /* reduced motion */
    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      .fade-in{transition:none}
      .bars i{animation:none}
    }