:root{
    --ink:#0f172a;
    --ink-2:#475467;
    --ink-3:#667085;
    --line:#e4e7ec;
    --line-soft:#eef0f6;
    --b1:#4f46e5;
    --b2:#7c3aed;
    --b3:#06b6d4;
    --b4:#ec4899;
    --grad:linear-gradient(102deg,#4f46e5 0%,#7c3aed 46%,#ec4899 100%);
    --grad-soft:linear-gradient(102deg,rgba(79,70,229,.12),rgba(124,58,237,.10),rgba(236,72,153,.10));
    --shadow-sm:0 6px 18px rgba(16,24,40,.06);
    --shadow-md:0 14px 34px rgba(16,24,40,.09);
    --shadow-lg:0 24px 58px rgba(79,70,229,.14);
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.72;
    color:var(--ink);
    background-color:#f6f8fd;
    background-image:
      radial-gradient(900px 520px at 8% -6%, rgba(79,70,229,.14), transparent 62%),
      radial-gradient(820px 480px at 96% 2%, rgba(236,72,153,.11), transparent 62%),
      radial-gradient(900px 600px at 50% 108%, rgba(6,182,212,.11), transparent 66%);
    background-repeat:no-repeat;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;}
  a{color:var(--b1);}
  .container{
    width:100%;
    max-width:1180px;
    margin-left:auto;
    margin-right:auto;
    padding-left:20px;
    padding-right:20px;
  }
  section{scroll-margin-top:86px;}
  .section{padding:74px 0;}
  .section-alt{background:rgba(255,255,255,.62);}
  .section-head{max-width:760px;margin-bottom:40px;}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
  .eyebrow{
    display:inline-block;
    font-size:13px;
    font-weight:700;
    letter-spacing:.14em;
    color:var(--b2);
    padding:5px 12px;
    border-radius:999px;
    background:rgba(124,58,237,.09);
    border:1px solid rgba(124,58,237,.16);
    margin-bottom:16px;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.32;letter-spacing:-.01em;}
  h1{font-size:40px;font-weight:800;}
  h2{font-size:31px;font-weight:800;}
  h3{font-size:18px;font-weight:700;}
  p{margin:0;}
  .section-head p{margin-top:14px;color:var(--ink-2);font-size:16.5px;}
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:13px 26px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    line-height:1.2;
    text-decoration:none;
    border:1px solid transparent;
    cursor:pointer;
    font-family:inherit;
    transition:transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  }
  .btn-primary{
    background:var(--grad);
    color:#fff;
    box-shadow:0 10px 26px rgba(99,58,237,.30);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(99,58,237,.36);}
  .btn-primary:active{transform:translateY(0);}
  .btn-ghost{
    background:#fff;
    color:var(--ink);
    border-color:var(--line);
    box-shadow:var(--shadow-sm);
  }
  .btn-ghost:hover{transform:translateY(-2px);border-color:#c8ccdf;box-shadow:var(--shadow-md);}
  .btn-sm{padding:10px 20px;font-size:14px;}

  /* header */
  .site-header{
    position:sticky;
    top:0;
    z-index:60;
    background:rgba(255,255,255,.86);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(228,231,236,.9);
  }
  .header-inner{
    position:relative;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    min-height:70px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    text-decoration:none;
    flex-shrink:0;
  }
  .ai-page-logo{display:block;max-height:34px;width:auto;height:auto;max-width:100%;}
  .brand-name{font-size:17px;font-weight:800;color:var(--ink);letter-spacing:.02em;white-space:nowrap;}
  .nav{
    display:flex;
    align-items:center;
    gap:10px;
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:0;
    list-style:none;
    margin:0;
    padding:0;
  }
  .nav-links li{display:block;}
  .nav-links li a{
    display:block;
    padding:10px 10px;
    font-size:14px;
    font-weight:500;
    color:var(--ink-2);
    text-decoration:none;
    border-radius:8px;
    white-space:nowrap;
    transition:color .2s ease, background .2s ease;
  }
  .nav-links li a:hover{color:var(--b1);background:rgba(79,70,229,.07);}
  .nav-cta{flex-shrink:0;padding:10px 18px;font-size:14px;}
  .nav-toggle{
    display:none;
    align-items:center;
    justify-content:center;
    width:42px;
    height:40px;
    border-radius:10px;
    border:1px solid var(--line);
    background:#fff;
    cursor:pointer;
    padding:0;
  }
  .nav-toggle span{
    display:block;
    width:18px;
    height:2px;
    background:var(--ink);
    border-radius:2px;
    position:relative;
    transition:background .2s ease;
  }
  .nav-toggle span::before,
  .nav-toggle span::after{
    content:"";
    position:absolute;
    left:0;
    width:18px;
    height:2px;
    background:var(--ink);
    border-radius:2px;
    transition:transform .25s ease;
  }
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  .nav-toggle.is-open span{background:transparent;}
  .nav-toggle.is-open span::before{transform:translateY(6px) rotate(45deg);}
  .nav-toggle.is-open span::after{transform:translateY(-6px) rotate(-45deg);}

  /* hero */
  .hero{padding:64px 0 56px;position:relative;overflow:hidden;}
  .hero-inner{
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:52px;
    align-items:start;
  }
  .hero-copy h1{margin-top:6px;}
  .hero-copy .lead{
    margin-top:20px;
    font-size:17px;
    color:var(--ink-2);
    max-width:540px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-tags{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:28px;
  }
  .hero-tags span{
    font-size:13px;
    font-weight:600;
    color:#3f3f66;
    padding:6px 13px;
    border-radius:999px;
    background:rgba(255,255,255,.9);
    border:1px solid rgba(124,58,237,.18);
  }
  .hero-panel{
    position:relative;
    background:#fff;
    border:1px solid rgba(228,231,236,.95);
    border-radius:22px;
    padding:22px;
    box-shadow:var(--shadow-lg);
    overflow:hidden;
  }
  .hero-panel::before{
    content:"";
    position:absolute;
    top:-90px;
    right:-70px;
    width:270px;
    height:270px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(124,58,237,.30),rgba(6,182,212,.18) 46%,transparent 72%);
    animation:floaty 9s ease-in-out infinite;
    pointer-events:none;
  }
  .hero-panel::after{
    content:"";
    position:absolute;
    bottom:-110px;
    left:-70px;
    width:250px;
    height:250px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(236,72,153,.22),transparent 70%);
    animation:floaty 11s ease-in-out infinite reverse;
    pointer-events:none;
  }
  @keyframes floaty{
    0%,100%{transform:translate3d(0,0,0);}
    50%{transform:translate3d(-16px,18px,0);}
  }
  .panel-head{
    display:flex;
    align-items:center;
    gap:10px;
    padding-bottom:14px;
    border-bottom:1px solid var(--line-soft);
    position:relative;
  }
  .dot-row{display:flex;gap:5px;}
  .dot-row i{
    width:8px;
    height:8px;
    border-radius:50%;
    background:#d7daea;
    display:block;
  }
  .dot-row i:first-child{background:#a5b4fc;}
  .dot-row i:nth-child(2){background:#c4b5fd;}
  .dot-row i:nth-child(3){background:#f9a8d4;}
  .panel-title{font-size:14px;font-weight:700;color:var(--ink-2);}
  .chip-grid{
    position:relative;
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    padding:18px 0;
  }
  .chip{
    padding:7px 12px;
    border-radius:9px;
    background:#f4f5fb;
    border:1px solid #e8eaf5;
    font-size:13px;
    font-weight:600;
    color:#3b3f63;
    transition:transform .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
  }
  .chip:hover{
    transform:translateY(-2px);
    background:var(--grad);
    color:#fff;
    border-color:transparent;
  }
  .panel-foot{
    position:relative;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px;
  }
  .mini{
    padding:12px 14px;
    border-radius:12px;
    background:var(--grad-soft);
    border:1px solid rgba(124,58,237,.14);
  }
  .mini strong{display:block;font-size:14px;color:var(--ink);}
  .mini span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:2px;}

  /* stats */
  .stats{padding:0 0 8px;}
  .stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:0;
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow-sm);
    overflow:hidden;
  }
  .stat{
    padding:26px 22px;
    text-align:center;
    border-right:1px solid var(--line-soft);
    transition:background .25s ease;
  }
  .stat:last-child{border-right:0;}
  .stat:hover{background:rgba(79,70,229,.04);}
  .stat strong{
    display:block;
    font-size:26px;
    font-weight:800;
    color:var(--b1);
    letter-spacing:-.02em;
  }
  .stat span{display:block;margin-top:4px;font-size:14px;color:var(--ink-2);}

  /* about */
  .about-grid{
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:44px;
    align-items:start;
  }
  .about-text p + p{margin-top:16px;}
  .about-text p{color:var(--ink-2);font-size:16px;}
  .about-points{
    display:grid;
    gap:14px;
  }
  .point{
    display:flex;
    gap:14px;
    padding:18px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:var(--shadow-sm);
    transition:transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  }
  .point:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#d6d2f7;}
  .point-ico{
    flex-shrink:0;
    width:38px;
    height:38px;
    border-radius:11px;
    background:var(--grad-soft);
    border:1px solid rgba(124,58,237,.16);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:15px;
    font-weight:800;
    color:var(--b2);
  }
  .point-body strong{display:block;font-size:15.5px;color:var(--ink);}
  .point-body span{display:block;font-size:14px;color:var(--ink-3);margin-top:2px;}

  /* services */
  .card-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .svc-card{
    position:relative;
    padding:24px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
    overflow:hidden;
  }
  .svc-card::before{
    content:"";
    position:absolute;
    top:0;
    left:0;
    height:3px;
    width:100%;
    background:var(--grad);
    opacity:0;
    transition:opacity .28s ease;
  }
  .svc-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:#ded9fb;}
  .svc-card:hover::before{opacity:1;}
  .svc-card h3{margin-bottom:8px;}
  .svc-card p{font-size:14.5px;color:var(--ink-3);}
  .svc-badge{
    display:inline-block;
    font-size:12px;
    font-weight:700;
    color:var(--b2);
    background:rgba(124,58,237,.09);
    border-radius:6px;
    padding:3px 8px;
    margin-bottom:12px;
  }
  .sub-block{margin-top:44px;}
  .sub-title{
    font-size:16px;
    font-weight:700;
    color:var(--ink);
    margin-bottom:16px;
    display:flex;
    align-items:center;
    gap:10px;
  }
  .sub-title::before{
    content:"";
    width:4px;
    height:16px;
    border-radius:2px;
    background:var(--grad);
    display:block;
  }
  .pill-row{display:flex;flex-wrap:wrap;gap:10px;}
  .pill{
    padding:9px 15px;
    border-radius:10px;
    background:#fff;
    border:1px solid var(--line);
    font-size:14px;
    font-weight:600;
    color:#3b3f63;
    box-shadow:0 2px 8px rgba(16,24,40,.04);
    transition:transform .22s ease, border-color .22s ease, color .22s ease;
  }
  .pill:hover{transform:translateY(-2px);border-color:#cfc9f8;color:var(--b1);}
  .pill-model{
    font-size:13.5px;
    font-weight:600;
    color:var(--ink-2);
    background:rgba(255,255,255,.9);
  }

  /* steps */
  .steps{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    gap:18px;
    counter-reset:step;
  }
  .step{
    position:relative;
    padding:24px 18px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .step-num{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:34px;
    height:34px;
    border-radius:10px;
    background:var(--grad);
    color:#fff;
    font-size:14px;
    font-weight:800;
    margin-bottom:14px;
  }
  .step h3{font-size:16px;margin-bottom:6px;}
  .step p{font-size:13.5px;color:var(--ink-3);}

  /* solutions */
  .sol-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .sol-card{
    padding:26px 22px;
    border-radius:16px;
    background:#fff;
    border:1px solid var(--line);
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease;
  }
  .sol-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .sol-card h3{margin-bottom:10px;}
  .sol-card ul{
    margin:0;
    padding-left:18px;
    color:var(--ink-3);
    font-size:14.5px;
  }
  .sol-card li + li{margin-top:5px;}

  /* network */
  .net-wrap{
    display:grid;
    grid-template-columns:.9fr 1.1fr;
    gap:40px;
    align-items:start;
  }
  .net-list{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:12px;
  }
  .net-item{
    display:flex;
    align-items:center;
    gap:10px;
    padding:14px 16px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:12px;
    font-size:14.5px;
    color:var(--ink-2);
    font-weight:600;
    transition:border-color .25s ease, transform .25s ease;
  }
  .net-item:hover{border-color:#cfc9f8;transform:translateY(-2px);}
  .net-dot{
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--grad);
    flex-shrink:0;
  }
  .net-cards{display:grid;gap:14px;}
  .net-card{
    padding:20px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-left:3px solid var(--b2);
    border-radius:12px;
    box-shadow:var(--shadow-sm);
  }
  .net-card strong{display:block;font-size:15.5px;color:var(--ink);margin-bottom:4px;}
  .net-card span{font-size:14px;color:var(--ink-3);}

  /* process */
  .timeline{
    position:relative;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:22px;
  }
  .tl-item{
    position:relative;
    padding:22px 20px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:var(--shadow-sm);
    transition:transform .25s ease, box-shadow .25s ease;
  }
  .tl-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
  .tl-tag{
    display:inline-block;
    font-size:12px;
    font-weight:800;
    letter-spacing:.08em;
    color:#fff;
    background:var(--grad);
    padding:3px 10px;
    border-radius:6px;
    margin-bottom:12px;
  }
  .tl-item h3{font-size:16px;margin-bottom:6px;}
  .tl-item p{font-size:14px;color:var(--ink-3);}

  /* cases */
  .case-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .case-item{
    margin:0;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease;
  }
  .case-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .case-media{
    background:#f2f3fa;
    padding:10px;
  }
  .case-media img{
    display:block;
    width:100%;
    height:100%;
    object-fit:contain;
  }
  .case-wide .case-media{aspect-ratio:16/10;}
  .case-square .case-media{aspect-ratio:1/1;}
  .case-item figcaption{
    padding:14px 18px;
    font-size:14.5px;
    font-weight:600;
    color:var(--ink-2);
    border-top:1px solid var(--line-soft);
  }

  /* compare */
  .score-card{
    display:grid;
    grid-template-columns:auto 1fr;
    gap:28px;
    align-items:center;
    padding:30px 32px;
    border-radius:18px;
    background:linear-gradient(102deg,rgba(79,70,229,.10),rgba(236,72,153,.09));
    border:1px solid rgba(124,58,237,.20);
    margin-bottom:32px;
  }
  .score-num{
    text-align:center;
    padding-right:28px;
    border-right:1px solid rgba(124,58,237,.22);
  }
  .score-num strong{
    display:block;
    font-size:46px;
    font-weight:800;
    color:var(--b1);
    line-height:1.1;
    letter-spacing:-.02em;
  }
  .score-num span{display:block;font-size:13px;color:var(--ink-3);margin-top:4px;}
  .score-body strong{display:block;font-size:19px;color:var(--ink);margin-bottom:6px;}
  .score-body p{font-size:14.5px;color:var(--ink-2);}
  .stars{display:flex;gap:4px;margin-top:10px;color:#f59e0b;font-size:17px;letter-spacing:2px;}
  .table-wrap{
    overflow-x:auto;
    border:1px solid var(--line);
    border-radius:16px;
    background:#fff;
    box-shadow:var(--shadow-sm);
  }
  table{border-collapse:collapse;width:100%;min-width:680px;font-size:14.5px;}
  thead th{
    background:#f6f5ff;
    color:var(--ink);
    font-weight:700;
    text-align:left;
    padding:15px 18px;
    border-bottom:1px solid var(--line);
    white-space:nowrap;
  }
  tbody td{
    padding:14px 18px;
    border-bottom:1px solid var(--line-soft);
    color:var(--ink-2);
    vertical-align:top;
  }
  tbody tr:last-child td{border-bottom:0;}
  tbody tr:hover td{background:rgba(79,70,229,.035);}
  td.strong-col{color:var(--ink);font-weight:700;}
  .table-note{margin-top:14px;font-size:13.5px;color:var(--ink-3);}

  /* form */
  .match-grid{
    display:grid;
    grid-template-columns:.85fr 1.15fr;
    gap:44px;
    align-items:start;
  }
  .match-side p{color:var(--ink-2);font-size:16px;margin-top:14px;}
  .match-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:12px;}
  .match-list li{
    display:flex;
    gap:10px;
    font-size:14.5px;
    color:var(--ink-2);
  }
  .match-list li::before{
    content:"";
    flex-shrink:0;
    width:7px;
    height:7px;
    margin-top:10px;
    border-radius:50%;
    background:var(--grad);
  }
  .form-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    padding:28px;
    box-shadow:var(--shadow-md);
  }
  .form-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
    margin-bottom:16px;
  }
  .field{display:flex;flex-direction:column;gap:8px;}
  .field label{font-size:14px;font-weight:600;color:var(--ink-2);}
  .field input,
  .field select,
  .field textarea{
    width:100%;
    padding:12px 14px;
    border:1px solid var(--line);
    border-radius:10px;
    font-size:15px;
    font-family:inherit;
    color:var(--ink);
    background:#fdfdff;
    transition:border-color .2s ease, box-shadow .2s ease;
  }
  .field textarea{resize:vertical;min-height:110px;}
  .field input:focus,
  .field select:focus,
  .field textarea:focus{
    outline:none;
    border-color:var(--b1);
    box-shadow:0 0 0 3px rgba(79,70,229,.14);
  }
  .form-actions{margin-top:8px;}
  .form-actions .btn{width:100%;}
  .form-hint{margin-top:12px;font-size:13px;color:var(--ink-3);}

  /* reviews */
  .review-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .review-card{
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    padding:24px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease;
  }
  .review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .review-text{font-size:14.8px;color:var(--ink-2);line-height:1.75;}
  .review-meta{
    display:flex;
    align-items:center;
    gap:12px;
    margin-top:18px;
    padding-top:16px;
    border-top:1px solid var(--line-soft);
  }
  .avatar{
    width:38px;
    height:38px;
    border-radius:50%;
    background:var(--grad);
    color:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:15px;
    font-weight:700;
    flex-shrink:0;
  }
  .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(--ink-3);line-height:1.4;}

  /* articles */
  .article-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
  }
  .article-card{
    display:block;
    padding:22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    text-decoration:none;
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease, border-color .28s ease;
  }
  .article-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#d6d2f7;}
  .article-tag{
    display:inline-block;
    font-size:12px;
    font-weight:700;
    color:var(--b2);
    background:rgba(124,58,237,.09);
    border-radius:6px;
    padding:3px 9px;
    margin-bottom:12px;
  }
  .article-card h3{font-size:16px;color:var(--ink);margin-bottom:8px;}
  .article-card p{font-size:14px;color:var(--ink-3);}
  .article-more{display:inline-block;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--b1);}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:36px;}
  .tag-cloud span{
    font-size:13px;
    font-weight:600;
    color:#4a4a70;
    background:#fff;
    border:1px solid var(--line);
    border-radius:999px;
    padding:6px 14px;
    transition:border-color .22s ease, color .22s ease, transform .22s ease;
  }
  .tag-cloud span:hover{transform:translateY(-2px);border-color:#cfc9f8;color:var(--b1);}

  /* faq */
  .faq-list{max-width:900px;}
  .faq-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    padding:0 20px;
    margin-bottom:12px;
    transition:border-color .25s ease, box-shadow .25s ease;
  }
  .faq-item[open]{border-color:#cfc9f8;box-shadow:0 12px 28px rgba(79,70,229,.10);}
  .faq-item summary{
    list-style:none;
    cursor:pointer;
    position:relative;
    padding:18px 30px 18px 0;
    font-size:15.5px;
    font-weight:700;
    color:var(--ink);
    line-height:1.55;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"";
    position:absolute;
    right:6px;
    top:50%;
    width:9px;
    height:9px;
    margin-top:-7px;
    border-right:2px solid var(--b2);
    border-bottom:2px solid var(--b2);
    transform:rotate(45deg);
    transition:transform .25s ease, margin-top .25s ease;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);margin-top:-2px;}
  .faq-answer{
    padding:0 0 18px;
    font-size:14.8px;
    color:var(--ink-2);
    line-height:1.78;
  }

  /* join */
  .join-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
    margin-bottom:32px;
  }
  .join-card{
    padding:26px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:16px;
    box-shadow:var(--shadow-sm);
    transition:transform .28s ease, box-shadow .28s ease;
  }
  .join-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
  .join-card h3{margin-bottom:8px;}
  .join-card p{font-size:14.5px;color:var(--ink-3);}
  .join-cta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:28px 30px;
    border-radius:18px;
    background:linear-gradient(102deg,rgba(79,70,229,.10),rgba(236,72,153,.09));
    border:1px solid rgba(124,58,237,.20);
  }
  .join-cta h3{font-size:19px;margin-bottom:4px;}
  .join-cta p{font-size:14.5px;color:var(--ink-2);}

  /* contact */
  .contact-grid{
    display:grid;
    grid-template-columns:1.2fr .8fr;
    gap:40px;
    align-items:start;
  }
  .contact-list{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:14px;
  }
  .contact-item{
    padding:18px 20px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:14px;
    box-shadow:var(--shadow-sm);
    transition:transform .25s ease, border-color .25s ease;
  }
  .contact-item:hover{transform:translateY(-3px);border-color:#d6d2f7;}
  .contact-item strong{display:block;font-size:13px;font-weight:700;color:var(--ink-3);letter-spacing:.04em;margin-bottom:4px;}
  .contact-item span,
  .contact-item a{display:block;font-size:15px;font-weight:600;color:var(--ink);text-decoration:none;word-break:break-all;}
  .contact-item a:hover{color:var(--b1);}
  .qr-card{
    padding:24px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    box-shadow:var(--shadow-md);
    text-align:center;
  }
  .qr-box{
    width:170px;
    margin:0 auto;
    padding:8px;
    border-radius:12px;
    background:#f6f7fc;
    border:1px solid var(--line-soft);
  }
  .qr-box img{display:block;width:100%;height:auto;border-radius:8px;}
  .qr-card strong{display:block;margin-top:14px;font-size:15px;color:var(--ink);}
  .qr-card span{display:block;margin-top:4px;font-size:13.5px;color:var(--ink-3);}

  /* footer */
  .site-footer{
    background:#0f172a;
    color:#cbd5e1;
    padding:44px 0 26px;
    margin-top:0;
  }
  .footer-top{
    display:grid;
    grid-template-columns:1.1fr 1.9fr;
    gap:36px;
    align-items:start;
    padding-bottom:28px;
    border-bottom:1px solid rgba(255,255,255,.12);
  }
  .footer-brand-name{
    font-size:19px;
    font-weight:800;
    color:#f8fafc;
    letter-spacing:.02em;
  }
  .footer-brand p{
    margin-top:10px;
    font-size:14px;
    color:#94a3b8;
    line-height:1.75;
    max-width:340px;
  }
  .footer-links-title{
    font-size:14px;
    font-weight:700;
    color:#e2e8f0;
    margin-bottom:14px;
  }
  .friend-links{
    display:flex;
    flex-wrap:wrap;
    gap:10px 20px;
  }
  .friend-links a{
    font-size:13.5px;
    color:#94a3b8;
    text-decoration:none;
    transition:color .2s ease;
  }
  .friend-links a:hover{color:#a5b4fc;}
  .footer-bottom{
    padding-top:20px;
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:10px;
    font-size:13px;
    color:#7c8798;
  }
  .footer-bottom a{color:#94a3b8;text-decoration:none;}
  .footer-bottom a:hover{color:#a5b4fc;}

  /* floating */
  .float-tools{
    position:fixed;
    right:18px;
    bottom:20px;
    z-index:80;
    display:flex;
    flex-direction:column;
    align-items:flex-end;
    gap:10px;
  }
  .float-btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:48px;
    height:48px;
    border-radius:50%;
    border:1px solid var(--line);
    background:#fff;
    color:var(--ink-2);
    font-size:13px;
    font-weight:700;
    cursor:pointer;
    box-shadow:var(--shadow-md);
    transition:transform .25s ease, box-shadow .25s ease, color .25s ease;
    font-family:inherit;
  }
  .float-btn:hover{transform:translateY(-3px);color:var(--b1);box-shadow:var(--shadow-lg);}
  .float-btn.primary{
    background:var(--grad);
    color:#fff;
    border-color:transparent;
  }
  .float-btn.primary:hover{color:#fff;}
  .float-panel{
    width:220px;
    padding:16px;
    border-radius:14px;
    background:#fff;
    border:1px solid var(--line);
    box-shadow:var(--shadow-lg);
    text-align:center;
    display:none;
  }
  .float-panel.is-open{display:block;animation:pop .25s ease;}
  @keyframes pop{
    from{opacity:0;transform:translateY(8px);}
    to{opacity:1;transform:translateY(0);}
  }
  .float-panel img{display:block;width:150px;height:auto;margin:0 auto;border-radius:8px;}
  .float-panel strong{display:block;margin-top:10px;font-size:14px;color:var(--ink);}
  .float-panel span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:2px;}

  /* reveal */
  .reveal{opacity:0;transform:translateY(20px);transition:opacity .65s ease, transform .65s ease;}
  .reveal.in{opacity:1;transform:translateY(0);}

  @media (prefers-reduced-motion: reduce){
    html{scroll-behavior:auto;}
    .reveal{opacity:1;transform:none;transition:none;}
    .hero-panel::before,.hero-panel::after{animation:none;}
    .btn,.svc-card,.sol-card,.step,.review-card,.article-card,.join-card,.point,.case-item,.tl-item{
      transition:none;
    }
  }

  @media (max-width:1080px){
    .nav{
      position:absolute;
      top:100%;
      left:0;
      right:0;
      display:none;
      flex-direction:column;
      align-items:stretch;
      gap:6px;
      background:#fff;
      border-bottom:1px solid var(--line);
      box-shadow:0 20px 34px rgba(16,24,40,.12);
      padding:10px 20px 20px;
    }
    .nav.open{display:flex;}
    .nav-links{flex-direction:column;width:100%;gap:0;}
    .nav-links li{width:100%;}
    .nav-links li a{
      padding:13px 4px;
      border-bottom:1px solid #f1f3f8;
      border-radius:0;
      font-size:15px;
    }
    .nav-cta{margin-top:14px;width:100%;}
    .nav-toggle{display:inline-flex;}
    .hero-inner{grid-template-columns:1fr;gap:38px;}
    .hero-copy .lead{max-width:none;}
    .about-grid{grid-template-columns:1fr;gap:32px;}
    .net-wrap{grid-template-columns:1fr;gap:30px;}
    .match-grid{grid-template-columns:1fr;gap:32px;}
    .contact-grid{grid-template-columns:1fr;gap:30px;}
  }

  @media (max-width:900px){
    h1{font-size:33px;}
    h2{font-size:26px;}
    .section{padding:58px 0;}
    .card-grid{grid-template-columns:repeat(2,1fr);}
    .sol-grid{grid-template-columns:repeat(2,1fr);}
    .case-grid{grid-template-columns:repeat(2,1fr);}
    .review-grid{grid-template-columns:repeat(2,1fr);}
    .article-grid{grid-template-columns:repeat(2,1fr);}
    .steps{grid-template-columns:repeat(2,1fr);}
    .timeline{grid-template-columns:repeat(2,1fr);}
    .join-grid{grid-template-columns:repeat(2,1fr);}
    .stats-grid{grid-template-columns:repeat(2,1fr);}
    .stat:nth-child(2){border-right:0;}
    .stat:nth-child(1),
    .stat:nth-child(2){border-bottom:1px solid var(--line-soft);}
    .footer-top{grid-template-columns:1fr;gap:26px;}
    .score-card{grid-template-columns:1fr;gap:18px;}
    .score-num{padding-right:0;border-right:0;border-bottom:1px solid rgba(124,58,237,.22);padding-bottom:16px;}
  }

  @media (max-width:640px){
    h1{font-size:27px;}
    h2{font-size:22px;}
    .hero{padding:42px 0 40px;}
    .section{padding:48px 0;}
    .section-head{margin-bottom:28px;}
    .card-grid,
    .sol-grid,
    .case-grid,
    .review-grid,
    .article-grid,
    .steps,
    .timeline,
    .join-grid,
    .contact-list{grid-template-columns:1fr;}
    .stats-grid{grid-template-columns:1fr;}
    .stat{border-right:0;border-bottom:1px solid var(--line-soft);}
    .stat:last-child{border-bottom:0;}
    .form-row{grid-template-columns:1fr;}
    .form-card{padding:20px;}
    .net-list{grid-template-columns:1fr;}
    .hero-actions .btn{width:100%;}
    .join-cta{padding:22px;}
    .join-cta .btn{width:100%;}
    .float-tools{right:12px;bottom:14px;}
  }