:root{
    --ink:#0f1533;
    --ink-2:#2b3157;
    --muted:#565f88;
    --line:rgba(70,80,160,.14);
    --line-2:rgba(70,80,160,.24);
    --card:#ffffff;
    --iris:linear-gradient(115deg,#4a7bff 0%,#8b5cf6 30%,#e861a8 58%,#ffab5e 80%,#3fd9c0 100%);
    --iris-soft:linear-gradient(115deg,rgba(74,123,255,.12),rgba(139,92,246,.12) 35%,rgba(232,97,168,.12) 65%,rgba(63,217,192,.12));
    --shadow:0 2px 12px rgba(20,30,90,.05);
    --shadow-hover:0 18px 40px rgba(40,50,140,.13);
    --radius:18px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
    color:var(--ink);
    line-height:1.75;
    font-size:16px;
    background:
      radial-gradient(900px 620px at 10% -10%, rgba(120,140,255,.22), transparent 62%),
      radial-gradient(820px 560px at 98% 4%, rgba(255,150,200,.20), transparent 64%),
      radial-gradient(920px 720px at 50% 104%, rgba(90,225,200,.16), transparent 66%),
      #f6f7fd;
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;}
  h1,h2,h3,h4{color:var(--ink);line-height:1.3;letter-spacing:-.01em;}
  p{margin:0 0 14px;}
  a{color:#3a4bd6;}
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}

  /* ------- header ------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(255,255,255,.82);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .site-header::after{
    content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
    background:var(--iris);opacity:.55;
  }
  .header-inner{
    display:flex;align-items:center;justify-content:space-between;
    gap:16px;min-height:68px;
  }
  .brand{
    display:flex;align-items:center;gap:10px;
    text-decoration:none;color:var(--ink);flex:0 0 auto;
  }
  .ai-page-logo{display:block;height:32px;width:auto;max-width:100%;}
  .brand-name{font-size:17px;font-weight:700;letter-spacing:.02em;white-space:nowrap;}
  .nav{display:flex;align-items:center;}
  .nav-links{
    display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0;
  }
  .nav-links a{
    display:block;padding:9px 10px;font-size:14px;color:var(--ink-2);
    text-decoration:none;border-radius:9px;white-space:nowrap;
    transition:color .2s ease,background .2s ease;
  }
  .nav-links a:hover,.nav-links a:focus-visible{
    color:var(--ink);background:rgba(120,140,255,.13);
  }
  .header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .nav-toggle{
    display:none;width:40px;height:40px;border-radius:11px;
    border:1px solid var(--line-2);background:#fff;cursor:pointer;
    align-items:center;justify-content:center;flex-direction:column;gap:4px;padding:0;
  }
  .nav-toggle span{display:block;width:17px;height:2px;border-radius:2px;background:var(--ink-2);transition:.25s;}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

  /* ------- buttons ------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 24px;border-radius:999px;font-size:15px;font-weight:600;
    text-decoration:none;border:1px solid transparent;cursor:pointer;
    transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
    font-family:inherit;line-height:1.4;
  }
  .btn-primary{
    color:#fff;background:linear-gradient(115deg,#4a7bff,#8b5cf6 48%,#e861a8 100%);
    box-shadow:0 10px 24px rgba(94,90,255,.28);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 15px 32px rgba(94,90,255,.38);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:#fff;color:var(--ink);border-color:var(--line-2);
    box-shadow:var(--shadow);
  }
  .btn-ghost:hover{transform:translateY(-2px);border-color:rgba(120,140,255,.6);box-shadow:0 14px 28px rgba(94,90,255,.16);}
  .btn-sm{padding:9px 18px;font-size:14px;}

  /* ------- generic section ------- */
  .section{padding:64px 0;position:relative;}
  section[id]{scroll-margin-top:90px;}
  .eyebrow{
    display:inline-block;font-size:13px;font-weight:600;letter-spacing:.12em;
    color:#5a3fd0;background:rgba(120,140,255,.12);
    border:1px solid rgba(120,140,255,.26);
    padding:5px 13px;border-radius:999px;margin-bottom:14px;
  }
  .section-title{
    font-size:clamp(23px,3.2vw,33px);margin:0 0 12px;font-weight:800;
  }
  .section-sub{color:var(--muted);max-width:700px;margin:0 0 34px;font-size:16px;}
  .section-head{max-width:760px;}

  .grid{display:grid;gap:20px;}
  .grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
  .grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow);
    transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(120,140,255,.38);}
  .card h3{font-size:18px;margin:0 0 8px;font-weight:700;}
  .card p{color:var(--muted);font-size:14.5px;margin:0;}
  .icon-badge{
    width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    color:#fff;background:linear-gradient(120deg,#5b7cff,#9a63f5 55%,#ec6aa8 100%);
    margin-bottom:14px;flex:0 0 auto;
    box-shadow:0 8px 18px rgba(110,90,240,.24);
  }
  .icon-badge svg{display:block;}

  /* ------- hero ------- */
  .hero{position:relative;overflow:hidden;padding:76px 0 58px;}
  .hero-glow{
    position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;z-index:0;
  }
  .hero-glow.g1{width:420px;height:420px;left:-120px;top:-80px;background:rgba(110,140,255,.42);animation:floatA 16s ease-in-out infinite;}
  .hero-glow.g2{width:380px;height:380px;right:-100px;top:20px;background:rgba(255,140,200,.38);animation:floatB 18s ease-in-out infinite;}
  .hero-glow.g3{width:340px;height:340px;left:45%;bottom:-180px;background:rgba(80,225,200,.32);animation:floatA 20s ease-in-out infinite reverse;}
  @keyframes floatA{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(28px,26px,0)}}
  @keyframes floatB{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-26px,20px,0)}}
  .hero-inner{position:relative;z-index:1;max-width:920px;margin:0 auto;text-align:center;}
  .hero h1{
    font-size:clamp(28px,4.6vw,46px);font-weight:800;margin:0 0 18px;letter-spacing:-.02em;
  }
  .hero-lead{
    font-size:clamp(15px,1.6vw,17px);color:var(--muted);
    max-width:720px;margin:0 auto 28px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:46px;}
  .metric-grid{margin-top:6px;text-align:left;}
  .metric-card{
    background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:16px;
    padding:20px;box-shadow:var(--shadow);backdrop-filter:blur(6px);
    transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
  }
  .metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(120,140,255,.38);}
  .metric-card h3{font-size:15.5px;margin:12px 0 6px;font-weight:700;}
  .metric-card p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.65;}

  /* ------- about ------- */
  .about-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:34px;align-items:start;}
  .about-copy p{color:var(--muted);font-size:15.5px;}
  .about-panel{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  }
  .about-panel::before{
    content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--iris);
  }
  .about-panel h3{font-size:17px;margin:0 0 16px;font-weight:700;}
  .panel-list{list-style:none;margin:0;padding:0;display:grid;gap:14px;}
  .panel-list li{display:grid;gap:2px;padding-bottom:12px;border-bottom:1px dashed var(--line);}
  .panel-list li:last-child{border-bottom:none;padding-bottom:0;}
  .panel-list strong{font-size:14.5px;color:var(--ink);}
  .panel-list span{font-size:13.5px;color:var(--muted);}

  /* ------- tag cloud ------- */
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px;}
  .tag-cloud span{
    display:inline-block;padding:7px 14px;border-radius:999px;font-size:13.5px;
    background:#fff;border:1px solid var(--line);color:var(--ink-2);
    transition:transform .22s ease,border-color .22s ease,color .22s ease,box-shadow .22s ease;
  }
  .tag-cloud span:hover{
    transform:translateY(-2px);border-color:rgba(120,140,255,.55);color:#3a2fb0;
    box-shadow:0 8px 18px rgba(94,90,255,.14);
  }

  /* ------- timeline ------- */
  .timeline{display:grid;gap:0;margin-top:6px;}
  .timeline-item{
    display:grid;grid-template-columns:52px 1fr;gap:18px;position:relative;padding-bottom:26px;
  }
  .timeline-item:last-child{padding-bottom:0;}
  .timeline-item::before{
    content:"";position:absolute;left:25px;top:44px;bottom:0;width:2px;
    background:linear-gradient(180deg,rgba(120,140,255,.5),rgba(120,140,255,.08));
  }
  .timeline-item:last-child::before{display:none;}
  .timeline-num{
    width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
    font-weight:800;font-size:15px;color:#fff;background:linear-gradient(130deg,#5b7cff,#a163f5 60%,#ec6aa8 100%);
    box-shadow:0 8px 18px rgba(110,90,240,.24);z-index:1;
  }
  .timeline-body{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 20px;box-shadow:var(--shadow);}
  .timeline-body h3{font-size:16px;margin:0 0 4px;font-weight:700;}
  .timeline-body p{margin:0;font-size:14px;color:var(--muted);}

  /* ------- table ------- */
  .table-wrap{
    overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);
    background:#fff;box-shadow:var(--shadow);
  }
  table.data-table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px;}
  table.data-table thead th{
    text-align:left;padding:15px 18px;font-size:14px;font-weight:700;color:var(--ink);
    background:rgba(120,140,255,.09);white-space:nowrap;border-bottom:1px solid var(--line);
  }
  table.data-table tbody td{
    padding:14px 18px;border-bottom:1px solid rgba(70,80,160,.09);color:var(--ink-2);vertical-align:top;
  }
  table.data-table tbody tr:last-child td{border-bottom:none;}
  table.data-table tbody tr:hover{background:rgba(120,140,255,.05);}
  .cell-strong{color:var(--ink);font-weight:700;}
  .cell-good{color:#1f9d6b;font-weight:600;}

  /* ------- review ------- */
  .review-grid{display:grid;grid-template-columns:1fr 1.35fr;gap:24px;align-items:start;}
  .score-card{
    background:linear-gradient(160deg,#ffffff,#f4f2ff 55%,#fdf2f8 100%);
    border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--shadow-hover);
    position:relative;overflow:hidden;
  }
  .score-card::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--iris);}
  .score-label{font-size:13px;letter-spacing:.14em;color:#5a3fd0;font-weight:600;}
  .score-value{font-size:56px;font-weight:800;line-height:1.05;margin:10px 0 2px;letter-spacing:-.03em;}
  .score-value small{font-size:20px;font-weight:600;color:var(--muted);}
  .stars{color:#f5a623;font-size:19px;letter-spacing:3px;margin-bottom:12px;}
  .score-desc{font-size:14px;color:var(--muted);margin:0;}

  /* ------- cases ------- */
  .case-card{
    margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;box-shadow:var(--shadow);
    transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
    display:flex;flex-direction:column;
  }
  .case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(120,140,255,.38);}
  .case-media{
    aspect-ratio:16/10;width:100%;overflow:hidden;
    background:linear-gradient(135deg,rgba(120,140,255,.16),rgba(255,150,200,.16) 55%,rgba(90,225,200,.16));
    display:flex;align-items:center;justify-content:center;padding:10px;
  }
  .case-media img{width:100%;height:100%;object-fit:contain;display:block;}
  .case-body{padding:18px 20px 22px;}
  .case-body h3{font-size:16px;margin:10px 0 6px;font-weight:700;}
  .case-body p{margin:0;font-size:14px;color:var(--muted);}
  .tag{
    display:inline-block;font-size:12px;padding:3px 10px;border-radius:999px;
    color:#4a2fb0;background:rgba(120,140,255,.14);border:1px solid rgba(120,140,255,.28);
  }

  /* ------- testimonials ------- */
  .quote-card{display:flex;flex-direction:column;gap:14px;}
  .quote-card p{font-size:14.5px;color:var(--ink-2);margin:0;flex:1;}
  .quote-user{display:flex;align-items:center;gap:12px;}
  .avatar{
    width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    font-weight:700;color:#fff;font-size:15px;flex:0 0 auto;
    background:linear-gradient(130deg,#5b7cff,#a163f5 60%,#ec6aa8 100%);
  }
  .quote-user strong{display:block;font-size:14.5px;color:var(--ink);}
  .quote-user span{display:block;font-size:13px;color:var(--muted);}

  /* ------- form ------- */
  .contact-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:26px;align-items:start;}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px;}
  .field{display:flex;flex-direction:column;gap:6px;}
  .field label{font-size:13.5px;font-weight:600;color:var(--ink-2);}
  .field input,.field select,.field textarea{
    width:100%;padding:11px 13px;border-radius:11px;border:1px solid var(--line-2);
    background:#fbfbff;color:var(--ink);font-size:14.5px;font-family:inherit;
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:rgba(120,140,255,.8);background:#fff;
    box-shadow:0 0 0 4px rgba(120,140,255,.16);
  }
  .field textarea{resize:vertical;min-height:110px;}
  .form-note{font-size:13px;color:var(--muted);margin:12px 0 0;}
  .contact-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow);
  }
  .contact-card h3{font-size:17px;margin:0 0 16px;font-weight:700;}
  .contact-list{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:12px;}
  .contact-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);align-items:flex-start;}
  .contact-list li b{color:var(--ink);font-weight:700;flex:0 0 74px;}
  .qr-box{
    display:flex;align-items:center;gap:14px;padding:14px;border-radius:14px;
    background:linear-gradient(135deg,rgba(120,140,255,.10),rgba(255,150,200,.10));
    border:1px solid var(--line);
  }
  .qr-box img{width:96px;height:96px;object-fit:contain;border-radius:10px;background:#fff;padding:4px;}
  .qr-box p{margin:0;font-size:13px;color:var(--muted);}

  /* ------- faq ------- */
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    box-shadow:var(--shadow);overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
  }
  .faq-item.open{border-color:rgba(120,140,255,.5);box-shadow:0 12px 28px rgba(60,70,160,.10);}
  .faq-q{
    width:100%;text-align:left;background:none;border:none;cursor:pointer;
    padding:17px 52px 17px 20px;font-size:15.5px;font-weight:600;color:var(--ink);
    font-family:inherit;position:relative;line-height:1.6;
  }
  .faq-q::after{
    content:"";position:absolute;right:20px;top:50%;width:9px;height:9px;
    border-right:2px solid #7a82ad;border-bottom:2px solid #7a82ad;
    transform:translateY(-70%) rotate(45deg);transition:transform .25s ease;
  }
  .faq-item.open .faq-q::after{transform:translateY(-30%) rotate(-135deg);}
  .faq-a{
    max-height:0;overflow:hidden;transition:max-height .32s ease;
  }
  .faq-a p{
    margin:0;padding:0 20px 18px;font-size:14.5px;color:var(--muted);line-height:1.8;
  }

  /* ------- articles ------- */
  .article-list{list-style:none;margin:0;padding:0;display:grid;gap:12px;}
  .article-list a{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;
    text-decoration:none;color:var(--ink);font-size:15px;font-weight:600;
    box-shadow:var(--shadow);transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .article-list a:hover{transform:translateX(4px);border-color:rgba(120,140,255,.5);box-shadow:0 12px 26px rgba(60,70,160,.10);}
  .article-more{font-size:13px;color:#5a3fd0;font-weight:600;flex:0 0 auto;}

  /* ------- network table small ------- */
  .network-note{font-size:13px;color:var(--muted);margin-top:14px;}

  /* ------- cta panel ------- */
  .cta-panel{
    position:relative;overflow:hidden;border-radius:24px;padding:38px 34px;
    background:linear-gradient(120deg,#ffffff,#f5f3ff 50%,#fdf1f8 100%);
    border:1px solid var(--line);box-shadow:var(--shadow-hover);
    display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  }
  .cta-panel::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--iris);}
  .cta-panel h2{font-size:clamp(20px,2.6vw,26px);margin:0 0 8px;font-weight:800;}
  .cta-panel p{margin:0;color:var(--muted);font-size:15px;max-width:620px;}

  /* ------- footer ------- */
  .site-footer{
    margin-top:20px;
    background:rgba(255,255,255,.78);
    border-top:1px solid var(--line);
    color:var(--ink-2);
    padding:36px 0 22px;
  }
  .footer-main{display:flex;justify-content:space-between;gap:34px;flex-wrap:wrap;align-items:flex-start;}
  .footer-brand{max-width:380px;}
  .footer-brand .ai-page-logo{height:30px;margin-bottom:12px;}
  .footer-brand p{font-size:13.5px;color:#4b5378;margin:0;}
  .footer-links h3{font-size:14px;margin:0 0 12px;color:var(--ink);font-weight:700;}
  .footer-links ul{
    list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 16px;max-width:520px;
  }
  .footer-links a{
    font-size:13.5px;color:#3f4670;text-decoration:none;
    transition:color .2s ease;
  }
  .footer-links a:hover{color:#3a2fb0;text-decoration:underline;}
  .footer-bottom{
    margin-top:26px;padding-top:16px;border-top:1px solid var(--line);
    display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
    font-size:13px;color:#5b6288;
  }
  .footer-bottom a{color:#3f4670;text-decoration:none;}
  .footer-bottom a:hover{color:#3a2fb0;}

  /* ------- floats ------- */
  .float-bar{
    position:fixed;right:18px;bottom:22px;z-index:70;
    display:flex;flex-direction:column;gap:10px;align-items:flex-end;
  }
  .float-btn{
    width:48px;height:48px;border-radius:14px;border:1px solid var(--line-2);
    background:#fff;color:var(--ink-2);cursor:pointer;
    display:flex;align-items:center;justify-content:center;
    box-shadow:0 10px 24px rgba(40,50,140,.16);
    transition:transform .22s ease,box-shadow .22s ease,color .22s ease,border-color .22s ease;
    text-decoration:none;font-size:13px;font-weight:700;font-family:inherit;
  }
  .float-btn:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(40,50,140,.24);border-color:rgba(120,140,255,.6);color:#3a2fb0;}
  .float-btn.kf-btn{
    color:#fff;border-color:transparent;
    background:linear-gradient(130deg,#5b7cff,#a163f5 60%,#ec6aa8 100%);
    width:auto;padding:0 18px;height:48px;
  }
  .float-btn.kf-btn:hover{color:#fff;}
  #backTop{opacity:0;visibility:hidden;transform:translateY(10px);}
  #backTop.show{opacity:1;visibility:visible;transform:none;}

  /* ------- reveal ------- */
  .reveal{opacity:0;transform:translateY(20px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1);}
  .reveal.in{opacity:1;transform:none;}

  /* ------- responsive ------- */
  @media (max-width:1080px){
    .header-inner{position:relative;min-height:64px;}
    .nav{
      display:none;position:absolute;top:100%;left:-24px;right:-24px;
      background:#fff;border-bottom:1px solid var(--line);
      box-shadow:0 20px 34px rgba(30,40,110,.14);
      padding:10px 16px 18px;flex-direction:column;align-items:stretch;
    }
    .nav.open{display:flex;}
    .nav-links{flex-direction:column;align-items:stretch;gap:0;}
    .nav-links a{padding:12px 10px;font-size:15px;border-radius:10px;}
    .nav-toggle{display:flex;}
    .about-grid{grid-template-columns:1fr;gap:24px;}
    .review-grid{grid-template-columns:1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .grid-4{grid-template-columns:repeat(2,minmax(0,1fr));}
    .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  }
  @media (max-width:720px){
    .section{padding:46px 0;}
    .hero{padding:52px 0 44px;}
    .grid-4,.grid-3,.grid-2{grid-template-columns:1fr;}
    .form-row{grid-template-columns:1fr;}
    .cta-panel{padding:28px 22px;}
    .card{padding:20px;}
    .container{padding:0 18px;}
    .nav{left:-18px;right:-18px;}
    .footer-main{flex-direction:column;gap:24px;}
    .footer-bottom{flex-direction:column;gap:6px;}
    .float-bar{right:12px;bottom:16px;}
    .brand-name{font-size:16px;}
    .ai-page-logo{height:28px;}
  }
  @media (max-width:640px){
    body{background-attachment:scroll;}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;}
  }