:root{
    --ink:#0b2830;
    --ink2:#33565f;
    --ink3:#5f828a;
    --teal:#0d9b9b;
    --teal-d:#0b7d84;
    --line:rgba(11,40,48,.10);
    --card:#ffffff;
    --shadow:0 14px 36px rgba(11,60,70,.08);
    --shadow-lg:0 26px 60px rgba(11,60,70,.14);
    --r:16px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    color:var(--ink);
    font-size:16px;
    line-height:1.72;
    background:
      radial-gradient(1100px 560px at 10% -6%, rgba(42,212,212,.18), transparent 62%),
      radial-gradient(900px 520px at 94% 4%, rgba(13,155,155,.13), transparent 64%),
      linear-gradient(180deg,#f1fbfb 0%,#f7fdfd 42%,#edf8f8 100%);
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;height:auto;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.4px;}
  p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  button{font-family:inherit;}
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
  section[id]{scroll-margin-top:88px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:100;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{
    position:relative;
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    min-height:68px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-logo{display:flex;align-items:center;}
  .brand-logo .ai-page-logo{width:auto;max-height:38px;object-fit:contain;}
  .brand-text{
    font-size:16px;font-weight:700;letter-spacing:.5px;color:var(--ink);white-space:nowrap;
  }
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:nowrap;}
  .nav-links a{
    display:inline-block;
    padding:8px 11px;
    font-size:14px;
    color:var(--ink2);
    border-radius:8px;
    white-space:nowrap;
    transition:color .2s ease, background .2s ease, transform .2s ease;
  }
  .nav-links a:hover{color:#0a7d84;background:rgba(13,155,155,.08);transform:translateY(-1px);}
  .ai-page-home-link{font-weight:600;color:#0a7d84 !important;}
  .nav-toggle{
    display:none;flex-direction:column;justify-content:center;gap:5px;
    width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
    background:#fff;cursor:pointer;padding:0 11px;
  }
  .nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
  .nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
  .nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
  .nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

  /* ---------- buttons ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;
    transition:transform .25s ease, box-shadow .25s ease, background .25s ease, color .25s ease;
  }
  .btn:active{transform:translateY(1px) scale(.99);}
  .btn-primary{
    background:linear-gradient(135deg,#13bcbc,#0b7d9a);
    color:#fff;
    box-shadow:0 12px 28px rgba(13,155,155,.34);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(13,155,155,.42);}
  .btn-light{
    background:rgba(255,255,255,.12);
    border-color:rgba(255,255,255,.42);
    color:#eafcff;
  }
  .btn-light:hover{background:rgba(255,255,255,.22);transform:translateY(-2px);}
  .btn-outline{
    background:#fff;border-color:rgba(13,155,155,.35);color:#0a6f76;
  }
  .btn-outline:hover{background:rgba(13,155,155,.08);transform:translateY(-2px);}

  /* ---------- hero ---------- */
  .hero{
    position:relative;overflow:hidden;
    padding:78px 0 86px;
    color:#e9fbfd;
    background:linear-gradient(135deg,#07303b 0%,#0a4f5c 44%,#0c7488 100%);
  }
  .hero::before{
    content:"";position:absolute;width:660px;height:660px;border-radius:50%;
    background:radial-gradient(circle,rgba(42,212,212,.34),transparent 66%);
    top:-280px;right:-180px;pointer-events:none;
  }
  .hero::after{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
    background-size:64px 64px;
  }
  .hero .container{position:relative;z-index:1;}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;}
  .hero-kicker{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:600;letter-spacing:.6px;
    color:#a8f0f4;background:rgba(255,255,255,.1);
    border:1px solid rgba(255,255,255,.2);
    padding:6px 16px;border-radius:999px;margin-bottom:20px;
  }
  .hero-kicker::before{content:"";width:7px;height:7px;border-radius:50%;background:#2ad4d4;box-shadow:0 0 0 4px rgba(42,212,212,.22);}
  .hero h1{
    font-size:clamp(28px,4.2vw,46px);
    line-height:1.22;letter-spacing:-1px;color:#ffffff;margin-bottom:20px;
  }
  .hero-lead{font-size:16px;color:#c3e7ec;max-width:34em;margin-bottom:30px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px 18px;}
  .hero-tags li{
    font-size:13.5px;color:#a6dde4;display:flex;align-items:center;gap:7px;
  }
  .hero-tags li::before{content:"";width:5px;height:5px;border-radius:50%;background:#2ad4d4;}
  .hero-panel{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
  .stat{
    background:rgba(255,255,255,.085);
    border:1px solid rgba(255,255,255,.18);
    border-radius:15px;
    padding:18px 18px 16px;
    transition:transform .3s ease, background .3s ease, border-color .3s ease;
  }
  .stat:hover{transform:translateY(-4px);background:rgba(255,255,255,.15);border-color:rgba(120,240,244,.5);}
  .stat b{display:block;font-size:24px;line-height:1.2;color:#ffffff;font-weight:700;letter-spacing:-.5px;}
  .stat span{display:block;font-size:13px;color:#a9dde4;margin-top:6px;}

  /* ---------- section base ---------- */
  .section{padding:74px 0;}
  .section-head{max-width:760px;margin-bottom:36px;}
  .kicker{
    display:inline-flex;align-items:center;
    font-size:13px;font-weight:600;letter-spacing:.4px;
    color:#0a7d84;background:rgba(13,155,155,.09);
    border:1px solid rgba(13,155,155,.2);
    padding:5px 14px;border-radius:999px;margin:0 0 14px;
  }
  .section-head h2{font-size:clamp(22px,2.8vw,32px);color:var(--ink);margin-bottom:14px;}
  .section-head p{color:var(--ink2);font-size:15.5px;}

  /* ---------- about ---------- */
  .about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:18px;}
  .about-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--r);
    padding:24px 22px;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  }
  .about-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(13,155,155,.34);}
  .about-card h3{font-size:16.5px;color:var(--ink);margin-bottom:9px;}
  .about-card p{font-size:14px;color:var(--ink2);}
  .dot-mark{
    width:34px;height:34px;border-radius:10px;margin-bottom:14px;
    background:linear-gradient(135deg,rgba(42,212,212,.22),rgba(13,127,154,.14));
    border:1px solid rgba(13,155,155,.28);
    display:grid;place-items:center;color:#0a7d84;
  }
  .dot-mark svg{width:17px;height:17px;}

  /* ---------- services ---------- */
  .services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;}
  .svc-card{
    position:relative;overflow:hidden;
    background:var(--card);border:1px solid var(--line);border-radius:var(--r);
    padding:26px 24px;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease;
  }
  .svc-card::after{
    content:"";position:absolute;left:0;top:0;height:3px;width:0;
    background:linear-gradient(90deg,#13bcbc,#0b7d9a);
    transition:width .4s ease;
  }
  .svc-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
  .svc-card:hover::after{width:100%;}
  .svc-icon{
    width:44px;height:44px;border-radius:12px;margin-bottom:16px;
    display:grid;place-items:center;color:#0a7d84;
    background:linear-gradient(135deg,rgba(42,212,212,.18),rgba(13,127,154,.1));
    border:1px solid rgba(13,155,155,.24);
  }
  .svc-icon svg{width:20px;height:20px;}
  .svc-card h3{font-size:17px;margin-bottom:10px;color:var(--ink);}
  .svc-card p{font-size:14px;color:var(--ink2);}

  /* ---------- studio ---------- */
  .studio{
    background:linear-gradient(180deg,rgba(13,155,155,.07),rgba(13,155,155,0) 70%);
  }
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:34px;}
  .tag-cloud li{
    padding:8px 16px;border-radius:999px;font-size:13.5px;
    color:#0a6f76;background:rgba(13,155,155,.075);
    border:1px solid rgba(13,155,155,.2);
    transition:background .25s ease, transform .25s ease, color .25s ease;
  }
  .tag-cloud li:hover{background:rgba(13,155,155,.18);transform:translateY(-2px);color:#075d63;}
  .studio-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:18px;}
  .studio-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:24px;box-shadow:var(--shadow);
    display:flex;flex-direction:column;gap:10px;
    transition:transform .3s ease, box-shadow .3s ease;
  }
  .studio-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
  .studio-card h3{font-size:16.5px;color:var(--ink);}
  .studio-card p{font-size:14px;color:var(--ink2);}
  .studio-tip{
    display:inline-flex;align-self:flex-start;margin-top:auto;
    font-size:12.5px;color:#0a7d84;background:rgba(13,155,155,.1);
    padding:4px 12px;border-radius:999px;
  }

  /* ---------- solutions ---------- */
  .solutions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;}
  .solution-card{
    border:1px solid rgba(13,155,155,.18);
    background:linear-gradient(160deg,#ffffff 0%,#f4fdfd 100%);
    border-radius:var(--r);padding:24px;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  }
  .solution-card:hover{transform:translateY(-5px);border-color:rgba(13,155,155,.45);box-shadow:var(--shadow-lg);}
  .solution-card h3{font-size:16.5px;margin-bottom:10px;color:var(--ink);display:flex;align-items:center;gap:9px;}
  .solution-card h3::before{
    content:"";width:8px;height:8px;border-radius:3px;
    background:linear-gradient(135deg,#13bcbc,#0b7d9a);
  }
  .solution-card p{font-size:14px;color:var(--ink2);}

  /* ---------- network ---------- */
  .network-wrap{
    display:grid;grid-template-columns:1fr 1.1fr;gap:34px;align-items:start;
  }
  .network-intro p{font-size:15px;color:var(--ink2);margin-bottom:18px;}
  .network-list{display:grid;gap:12px;}
  .network-item{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:#fff;border:1px solid var(--line);border-radius:12px;
    padding:13px 18px;box-shadow:0 6px 18px rgba(11,60,70,.05);
    transition:transform .25s ease,border-color .25s ease;
  }
  .network-item:hover{transform:translateX(4px);border-color:rgba(13,155,155,.4);}
  .network-item span{font-size:14px;color:var(--ink3);}
  .network-item strong{font-size:14.5px;color:var(--ink);font-weight:600;}

  /* ---------- process ---------- */
  .timeline{display:grid;gap:16px;}
  .timeline li{
    display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:start;
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:18px 20px;box-shadow:0 8px 22px rgba(11,60,70,.05);
    transition:transform .28s ease, border-color .28s ease;
  }
  .timeline li:hover{transform:translateX(5px);border-color:rgba(13,155,155,.42);}
  .step-no{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(135deg,#13bcbc,#0b7d9a);color:#fff;font-weight:700;font-size:15px;
    box-shadow:0 8px 18px rgba(13,155,155,.28);
  }
  .timeline h3{font-size:16px;margin-bottom:6px;color:var(--ink);}
  .timeline p{font-size:14px;color:var(--ink2);}

  /* ---------- cases ---------- */
  .cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:20px;}
  .case-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    overflow:hidden;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease;
  }
  .case-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
  .case-media{overflow:hidden;background:#eef8f8;}
  .case-media img{width:100%;height:auto;display:block;transition:transform .5s ease;}
  .case-card:hover .case-media img{transform:scale(1.04);}
  .case-body{padding:16px 18px 18px;}
  .case-body h3{font-size:15.5px;color:var(--ink);margin-bottom:6px;}
  .case-body p{font-size:13.5px;color:var(--ink3);}

  /* ---------- reviews ---------- */
  .reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px;}
  .review-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:24px;box-shadow:var(--shadow);
    display:flex;flex-direction:column;gap:14px;
    transition:transform .3s ease, box-shadow .3s ease;
  }
  .review-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);}
  .stars{color:#f0a020;font-size:14px;letter-spacing:2px;}
  .review-card blockquote{margin:0;font-size:14.5px;color:var(--ink2);line-height:1.78;}
  .review-meta{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:6px;border-top:1px dashed var(--line);}
  .avatar{
    width:38px;height:38px;border-radius:50%;flex:0 0 auto;
    display:grid;place-items:center;font-size:14px;font-weight:700;color:#0a6f76;
    background:linear-gradient(135deg,rgba(42,212,212,.25),rgba(13,127,154,.14));
    border:1px solid rgba(13,155,155,.24);
  }
  .review-meta strong{display:block;font-size:14.5px;color:var(--ink);line-height:1.4;}
  .review-meta span{display:block;font-size:12.5px;color:var(--ink3);}

  /* ---------- review / rating ---------- */
  .rating-panel{
    display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;
    background:linear-gradient(135deg,#072f3a 0%,#0b5563 55%,#0c7488 100%);
    border-radius:20px;padding:30px 32px;color:#e9fbfd;margin-bottom:30px;
    box-shadow:var(--shadow-lg);
  }
  .rating-score{text-align:center;padding-right:26px;border-right:1px solid rgba(255,255,255,.18);}
  .rating-score b{font-size:52px;line-height:1;color:#ffffff;letter-spacing:-2px;}
  .rating-score em{font-size:16px;font-style:normal;color:#9fdfe6;}
  .rating-score .stars{display:block;margin:10px 0 6px;font-size:17px;color:#ffc65c;letter-spacing:3px;}
  .rating-score small{font-size:12.5px;color:#9fdfe6;}
  .rating-copy h3{font-size:19px;color:#ffffff;margin-bottom:10px;}
  .rating-copy p{font-size:14.5px;color:#b8e5ea;}

  .table-wrap{
    overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:#fff;
    box-shadow:var(--shadow);-webkit-overflow-scrolling:touch;
  }
  table{width:100%;border-collapse:collapse;min-width:720px;font-size:14px;}
  thead th{
    background:linear-gradient(180deg,rgba(13,155,155,.13),rgba(13,155,155,.06));
    color:#075d63;font-weight:700;text-align:left;padding:15px 18px;
    border-bottom:1px solid rgba(13,155,155,.2);white-space:nowrap;
  }
  tbody td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink2);vertical-align:top;}
  tbody tr:last-child td{border-bottom:0;}
  tbody tr:nth-child(even){background:rgba(13,155,155,.025);}
  tbody tr:hover{background:rgba(13,155,155,.07);}
  tbody td:first-child{color:var(--ink);font-weight:600;white-space:nowrap;}
  td.good{color:#0a7d84;font-weight:600;}

  /* ---------- token ---------- */
  .token-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin-bottom:22px;}
  .token-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:24px;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  }
  .token-card:hover{transform:translateY(-5px);border-color:rgba(13,155,155,.4);box-shadow:var(--shadow-lg);}
  .token-card h3{font-size:16.5px;color:var(--ink);margin-bottom:10px;}
  .token-card p{font-size:14px;color:var(--ink2);}
  .token-note{
    font-size:13.5px;color:var(--ink3);
    background:rgba(13,155,155,.07);border:1px dashed rgba(13,155,155,.28);
    border-radius:12px;padding:14px 18px;
  }

  /* ---------- form ---------- */
  .form-wrap{
    display:grid;grid-template-columns:1fr 1.05fr;gap:30px;align-items:start;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    padding:32px;box-shadow:var(--shadow);
  }
  .form-side h3{font-size:19px;color:var(--ink);margin-bottom:12px;}
  .form-side p{font-size:14.5px;color:var(--ink2);margin-bottom:18px;}
  .form-points{display:grid;gap:11px;}
  .form-points li{display:flex;gap:10px;font-size:14px;color:var(--ink2);}
  .form-points li::before{
    content:"";flex:0 0 auto;width:7px;height:7px;margin-top:9px;border-radius:50%;
    background:linear-gradient(135deg,#13bcbc,#0b7d9a);
  }
  form.lead-form{display:grid;gap:14px;}
  .field{display:grid;gap:7px;}
  .field label{font-size:13.5px;font-weight:600;color:var(--ink2);}
  .field input,.field select,.field textarea{
    width:100%;padding:12px 14px;border-radius:11px;
    border:1px solid rgba(11,40,48,.16);
    background:#fbfefe;color:var(--ink);font-size:14.5px;font-family:inherit;
    outline:none;transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .field textarea{min-height:110px;resize:vertical;}
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:rgba(13,155,155,.7);
    box-shadow:0 0 0 4px rgba(13,155,155,.12);
    background:#fff;
  }
  .lead-form .btn{width:100%;margin-top:4px;}
  .form-note{font-size:12.5px;color:var(--ink3);text-align:center;}

  /* ---------- help ---------- */
  .help-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-bottom:30px;}
  .help-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:22px;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease;
  }
  .help-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
  .help-card h3{font-size:16px;color:var(--ink);margin-bottom:8px;}
  .help-card p{font-size:13.5px;color:var(--ink2);}
  .wiki-title{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:14px;}

  /* ---------- news ---------- */
  .news-list{display:grid;gap:12px;}
  .news-item{
    display:flex;align-items:center;justify-content:space-between;gap:18px;
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:16px 20px;box-shadow:0 8px 22px rgba(11,60,70,.05);
    transition:transform .28s ease, border-color .28s ease, box-shadow .28s ease;
  }
  .news-item:hover{transform:translateY(-3px);border-color:rgba(13,155,155,.4);box-shadow:var(--shadow);}
  .news-item h3{font-size:15.5px;color:var(--ink);font-weight:600;}
  .news-item span{
    flex:0 0 auto;font-size:13px;color:#0a7d84;
    background:rgba(13,155,155,.1);padding:5px 14px;border-radius:999px;
    transition:background .25s ease;
  }
  .news-item:hover span{background:rgba(13,155,155,.2);}

  /* ---------- faq ---------- */
  .faq-list{display:grid;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    box-shadow:0 8px 22px rgba(11,60,70,.05);overflow:hidden;
    transition:border-color .25s ease, box-shadow .25s ease;
  }
  .faq-item[open]{border-color:rgba(13,155,155,.42);box-shadow:var(--shadow);}
  .faq-item summary{
    list-style:none;cursor:pointer;
    padding:18px 52px 18px 20px;position:relative;
    font-size:15.5px;font-weight:600;color:var(--ink);
    transition:color .2s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";position:absolute;right:20px;top:50%;
    width:9px;height:9px;border-right:2px solid #0a7d84;border-bottom:2px solid #0a7d84;
    transform:translateY(-70%) rotate(45deg);transition:transform .3s ease;
  }
  .faq-item[open] summary::after{transform:translateY(-30%) rotate(-135deg);}
  .faq-item summary:hover{color:#0a7d84;}
  .faq-answer{padding:0 20px 20px;font-size:14.5px;color:var(--ink2);}

  /* ---------- contact ---------- */
  .contact-grid{display:grid;grid-template-columns:1.15fr .85fr 1fr;gap:20px;align-items:start;}
  .contact-card,.qr-card,.join-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:24px;box-shadow:var(--shadow);
    transition:transform .3s ease, box-shadow .3s ease;
  }
  .contact-card:hover,.qr-card:hover,.join-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);}
  .contact-card h3,.join-card h3{font-size:16.5px;color:var(--ink);margin-bottom:14px;}
  .contact-list{display:grid;gap:11px;}
  .contact-list li{
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    font-size:14px;color:var(--ink2);padding-bottom:10px;border-bottom:1px dashed var(--line);
  }
  .contact-list li:last-child{border-bottom:0;padding-bottom:0;}
  .contact-list strong,.contact-list a{color:var(--ink);font-weight:600;word-break:break-all;text-align:right;}
  .contact-list a:hover{color:#0a7d84;}
  .qr-card{text-align:center;}
  .qr-card img{width:100%;max-width:190px;margin:0 auto 12px;border-radius:12px;border:1px solid var(--line);}
  .qr-card p{font-size:13.5px;color:var(--ink2);}
  .join-card p{font-size:14px;color:var(--ink2);margin-bottom:14px;}
  .join-card ul{display:grid;gap:10px;}
  .join-card li{font-size:13.5px;color:var(--ink2);display:flex;gap:9px;}
  .join-card li::before{
    content:"";flex:0 0 auto;width:6px;height:6px;margin-top:9px;border-radius:50%;
    background:linear-gradient(135deg,#13bcbc,#0b7d9a);
  }

  /* ---------- footer ---------- */
  .site-footer{
    background:#072b34;color:#cfe9ee;
    padding:46px 0 0;margin-top:0;
  }
  .footer-top{
    display:grid;grid-template-columns:1.2fr 1fr;gap:34px;
    padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand{display:flex;flex-direction:column;gap:14px;}
  .footer-brand .ai-page-logo{max-height:34px;width:auto;}
  .footer-brand p{font-size:13.5px;color:#a9ced6;max-width:34em;}
  .footer-title{font-size:14px;font-weight:600;color:#ffffff;margin-bottom:14px;}
  .footer-links ul{display:flex;flex-wrap:wrap;gap:10px 18px;}
  .footer-links a{
    font-size:13.5px;color:#9fd8e0;
    transition:color .2s ease, transform .2s ease;
    display:inline-block;
  }
  .footer-links a:hover{color:#ffffff;transform:translateY(-1px);}
  .footer-bottom{
    padding:18px 0 22px;
    font-size:13px;color:#8fb8c1;
    display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center;justify-content:space-between;
  }
  .footer-bottom a{color:#a8d8e0;}
  .footer-bottom a:hover{color:#ffffff;}

  /* ---------- float dock ---------- */
  .float-dock{
    position:fixed;right:18px;bottom:18px;z-index:120;
    display:flex;flex-direction:column;align-items:flex-end;gap:10px;
  }
  .dock-btn{
    width:54px;height:54px;border-radius:50%;border:none;cursor:pointer;
    background:linear-gradient(135deg,#13bcbc,#0b7d9a);color:#fff;
    display:grid;place-items:center;font-size:13px;font-weight:600;letter-spacing:.5px;
    box-shadow:0 12px 28px rgba(13,155,155,.42);
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .dock-btn:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 18px 34px rgba(13,155,155,.5);}
  .dock-btn.back-top{font-size:19px;opacity:0;pointer-events:none;transform:translateY(10px);}
  .dock-btn.back-top.show{opacity:1;pointer-events:auto;transform:translateY(0);}
  .kefu-panel{
    width:236px;background:#fff;border:1px solid var(--line);
    border-radius:16px;box-shadow:var(--shadow-lg);
    padding:18px;text-align:left;
  }
  .kefu-panel h3{font-size:14.5px;color:var(--ink);margin-bottom:10px;}
  .kefu-panel ul{display:grid;gap:9px;margin-bottom:12px;}
  .kefu-panel li{font-size:13px;color:var(--ink2);display:flex;justify-content:space-between;gap:10px;}
  .kefu-panel li strong{color:var(--ink);}
  .kefu-panel a{font-size:13px;color:#0a7d84;font-weight:600;}

  /* ---------- reveal ---------- */
  .reveal-init{opacity:0;transform:translateY(22px);transition:opacity .7s ease, transform .7s cubic-bezier(.22,.61,.36,1);}
  .reveal-init.is-visible{opacity:1;transform:none;}

  /* ---------- responsive ---------- */
  @media (max-width:1024px){
    .nav-toggle{display:flex;}
    .nav-links{
      position:absolute;top:100%;left:-20px;right:-20px;
      display:none;flex-direction:column;align-items:stretch;
      background:#ffffff;border-bottom:1px solid var(--line);
      box-shadow:0 18px 32px rgba(11,60,70,.12);
      padding:10px 20px 16px;gap:0;max-height:calc(100vh - 80px);overflow-y:auto;
    }
    .nav-links.open{display:flex;}
    .nav-links a{padding:13px 4px;width:100%;border-bottom:1px solid var(--line);border-radius:0;}
    .nav-links a:last-child{border-bottom:0;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .network-wrap{grid-template-columns:1fr;gap:26px;}
    .form-wrap{grid-template-columns:1fr;padding:26px;}
    .contact-grid{grid-template-columns:1fr 1fr;}
    .join-card{grid-column:1 / -1;}
  }
  @media (max-width:760px){
    .section{padding:56px 0;}
    .hero{padding:58px 0 64px;}
    .hero-panel{grid-template-columns:1fr 1fr;}
    .hero-lead{font-size:15px;}
    .rating-panel{grid-template-columns:1fr;padding:24px;gap:18px;}
    .rating-score{border-right:0;border-bottom:1px solid rgba(255,255,255,.18);padding:0 0 16px;width:100%;}
    .contact-grid{grid-template-columns:1fr;}
    .join-card{grid-column:auto;}
    .footer-top{grid-template-columns:1fr;gap:26px;}
    .news-item{flex-direction:column;align-items:flex-start;gap:8px;}
    .brand-text{display:none;}
  }
  @media (max-width:420px){
    .hero-actions .btn{width:100%;}
    .float-dock{right:12px;bottom:12px;}
  }