:root{
    --ink:#111a33;
    --ink2:#495273;
    --muted:#6a7290;
    --line:#e7e9f6;
    --violet:#6d4dff;
    --blue:#3b8cff;
    --teal:#12c2b4;
    --pink:#ff5c8a;
    --orange:#ff9a3c;
    --card:#ffffff;
    --radius:18px;
    --shadow:0 14px 34px rgba(28,38,88,.10);
    --shadow-sm:0 8px 20px rgba(28,38,88,.07);
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC",sans-serif;
    color:var(--ink);
    font-size:16px;
    line-height:1.72;
    -webkit-font-smoothing:antialiased;
    background-color:#fbfbff;
    background-image:
      radial-gradient(760px 520px at 4% -6%, rgba(109,77,255,.14), transparent 62%),
      radial-gradient(700px 480px at 98% 4%, rgba(18,194,180,.13), transparent 60%),
      radial-gradient(900px 640px at 52% 42%, rgba(59,140,255,.07), transparent 72%),
      radial-gradient(760px 520px at 10% 88%, rgba(255,154,60,.09), transparent 66%),
      radial-gradient(700px 520px at 94% 96%, rgba(255,92,138,.09), transparent 66%);
    background-repeat:no-repeat;
  }
  img{max-width:100%;height:auto;display:block}
  a{color:var(--violet)}
  h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
  p{margin:0}
  ul{margin:0;padding:0;list-style:none}
  .wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}
  .sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
  section[id]{scroll-margin-top:92px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:999px;font-size:15px;font-weight:600;
    text-decoration:none;border:1px solid transparent;cursor:pointer;font-family:inherit;
    transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
  }
  .btn-primary{
    background:linear-gradient(120deg,#6d4dff 0%,#3b8cff 48%,#12c2b4 100%);
    color:#fff;box-shadow:0 10px 24px rgba(80,80,220,.25);
  }
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(80,80,220,.32)}
  .btn-primary:active{transform:translateY(0);box-shadow:0 6px 16px rgba(80,80,220,.24)}
  .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:var(--shadow-sm)}
  .btn-ghost:hover{border-color:rgba(109,77,255,.42);color:var(--violet);transform:translateY(-2px)}
  .btn-ghost:active{transform:translateY(0)}

  /* 顶部导航 */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(255,255,255,.9);
    -webkit-backdrop-filter:saturate(1.6) blur(12px);
    backdrop-filter:saturate(1.6) blur(12px);
    border-bottom:1px solid var(--line);
  }
  .header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px;position:relative}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-weight:700;font-size:17px;flex:0 0 auto}
  .brand img{max-height:34px;width:auto}
  .main-nav{display:flex;align-items:center;gap:14px}
  .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:nowrap}
  .nav-links a{
    display:block;padding:9px;font-size:15px;color:var(--ink2);text-decoration:none;
    border-radius:10px;white-space:nowrap;transition:color .2s ease,background .2s ease;
  }
  .nav-links a:hover{color:var(--violet);background:rgba(109,77,255,.08)}
  .nav-cta{padding:10px 18px;font-size:14px}
  .nav-toggle{
    display:none;align-items:center;justify-content:center;
    width:44px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;
    color:var(--ink);cursor:pointer;transition:border-color .2s ease,color .2s ease;
  }
  .nav-toggle:hover{border-color:rgba(109,77,255,.4);color:var(--violet)}
  .nav-toggle svg{width:20px;height:20px;fill:currentColor}

  @media (max-width:1024px){
    .nav-toggle{display:inline-flex}
    .main-nav{
      position:absolute;top:100%;left:0;right:0;
      display:none;flex-direction:column;align-items:stretch;gap:0;
      background:#fff;border-bottom:1px solid var(--line);
      box-shadow:0 18px 32px rgba(28,38,88,.12);
      padding:10px 20px 20px;
    }
    .main-nav.open{display:flex}
    .nav-links{flex-direction:column;align-items:stretch;gap:0;width:100%}
    .nav-links a{padding:13px 4px;border-bottom:1px solid var(--line);border-radius:0;font-size:15px}
    .nav-cta{display:flex;margin-top:14px;width:100%}
  }

  /* Hero */
  .hero{padding:64px 0 56px;position:relative;overflow:hidden}
  .hero-inner{max-width:1180px}
  .hero-copy{max-width:840px}
  .eyebrow{
    display:inline-block;font-size:13px;font-weight:600;letter-spacing:.06em;
    color:var(--violet);background:rgba(109,77,255,.09);
    padding:6px 14px;border-radius:999px;margin-bottom:18px;
  }
  .hero h1{
    font-size:clamp(28px,4.4vw,46px);
    font-weight:800;letter-spacing:-.02em;
    margin-bottom:18px;color:var(--ink);
  }
  .hero h1 em{
    font-style:normal;
    background:linear-gradient(100deg,#6d4dff,#3b8cff 45%,#12c2b4 90%);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  @supports not ((-webkit-background-clip:text) or (background-clip:text)){
    .hero h1 em{color:var(--violet);background:none}
  }
  .hero-lead{font-size:clamp(15px,1.6vw,17px);color:var(--ink2);max-width:720px;margin-bottom:26px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:24px}
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
  .hero-tags li{
    font-size:13.5px;color:var(--ink2);background:rgba(255,255,255,.86);
    border:1px solid var(--line);padding:7px 14px;border-radius:999px;
    transition:transform .22s ease,color .22s ease,border-color .22s ease;
  }
  .hero-tags li:hover{transform:translateY(-2px);color:var(--violet);border-color:rgba(109,77,255,.38)}
  .hero-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
  .stat{
    background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:16px;
    padding:18px 18px;display:flex;flex-direction:column;gap:4px;
    box-shadow:var(--shadow-sm);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .stat:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(109,77,255,.28)}
  .stat strong{font-size:26px;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1.2}
  .stat span{font-size:13.5px;color:var(--muted)}

  /* 通用区块 */
  .section{padding:64px 0}
  .section-head{max-width:780px;margin-bottom:34px}
  .section-eyebrow{
    display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.08em;
    color:var(--teal);background:rgba(18,194,180,.1);
    padding:5px 13px;border-radius:999px;margin-bottom:14px;
  }
  .section-head h2{font-size:clamp(23px,2.9vw,33px);font-weight:800;margin-bottom:12px}
  .section-desc{color:var(--ink2);font-size:15.5px}

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:22px;box-shadow:var(--shadow-sm);
    transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(109,77,255,.26)}

  /* 关于我们 */
  .about-grid{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
  @media (min-width:900px){.about-grid{grid-template-columns:1.08fr .92fr}}
  .about-copy p{color:var(--ink2);font-size:15.5px;margin-bottom:14px}
  .about-copy p:last-of-type{margin-bottom:0}
  .about-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;margin-top:20px}
  .about-list li{
    position:relative;padding:12px 14px 12px 34px;border-radius:12px;
    background:linear-gradient(140deg,#f6f5ff,#f2fbfa);
    border:1px solid var(--line);font-size:14.5px;color:var(--ink2);font-weight:500;
  }
  .about-list li::before{
    content:"";position:absolute;left:14px;top:50%;transform:translateY(-50%);
    width:9px;height:9px;border-radius:3px;
    background:linear-gradient(135deg,var(--violet),var(--teal));
  }
  .media{
    aspect-ratio:16/10;background:#f2f3fb;border-radius:var(--radius);
    border:1px solid var(--line);overflow:hidden;
    display:flex;align-items:center;justify-content:center;padding:10px;
    box-shadow:var(--shadow-sm);
  }
  .media img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:12px}

  /* 服务卡片 */
  .grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:18px}
  .svc-card{display:flex;flex-direction:column;gap:10px}
  .svc-card h3{font-size:17px;font-weight:700}
  .svc-card p{font-size:14.5px;color:var(--ink2)}
  .svc-icon{
    width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;
    color:#fff;box-shadow:0 8px 18px rgba(60,70,160,.18);margin-bottom:2px;
  }
  .svc-icon svg{width:22px;height:22px;fill:currentColor}
  .icon-a{background:linear-gradient(135deg,#6d4dff,#a06bff)}
  .icon-b{background:linear-gradient(135deg,#3b8cff,#5fd0ff)}
  .icon-c{background:linear-gradient(135deg,#12c2b4,#5ee0c0)}
  .icon-d{background:linear-gradient(135deg,#ff9a3c,#ffc46b)}
  .icon-e{background:linear-gradient(135deg,#ff5c8a,#ff9bb2)}
  .icon-f{background:linear-gradient(135deg,#8b5cf6,#c4a3ff)}
  .icon-g{background:linear-gradient(135deg,#0ea5e9,#7dd3fc)}
  .icon-h{background:linear-gradient(135deg,#f97316,#fbbf24)}

  /* 标签云 */
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
  .tag-cloud span{
    font-size:14px;color:var(--ink2);background:#fff;border:1px solid var(--line);
    padding:8px 15px;border-radius:999px;
    transition:transform .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease;
  }
  .tag-cloud span:hover{transform:translateY(-2px);color:var(--violet);border-color:rgba(109,77,255,.36);box-shadow:var(--shadow-sm)}
  .pillars{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
  .pillar{
    border-radius:var(--radius);padding:22px;
    background:linear-gradient(150deg,#ffffff,#f7f8ff);
    border:1px solid var(--line);box-shadow:var(--shadow-sm);
    transition:transform .28s ease,box-shadow .28s ease;
  }
  .pillar:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .pillar h3{font-size:16.5px;margin-bottom:8px}
  .pillar p{font-size:14.5px;color:var(--ink2)}

  /* 服务网络 */
  .region-tags{display:flex;flex-wrap:wrap;gap:12px}
  .region-tags span{
    display:inline-flex;align-items:center;
    font-size:14.5px;font-weight:600;color:var(--ink);
    background:linear-gradient(140deg,#f6f5ff,#eefbf9);
    border:1px solid var(--line);border-radius:14px;padding:12px 20px;
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .region-tags span:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}

  /* 标准流程 */
  .steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(196px,1fr));gap:16px}
  .step{
    position:relative;background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:22px 20px;box-shadow:var(--shadow-sm);
    transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
  }
  .step:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(18,194,180,.34)}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;
    font-size:13px;font-weight:700;letter-spacing:.04em;color:#fff;
    width:38px;height:38px;border-radius:12px;margin-bottom:14px;
    background:linear-gradient(135deg,var(--violet),var(--blue));
  }
  .step:nth-child(2) .step-num{background:linear-gradient(135deg,#3b8cff,#12c2b4)}
  .step:nth-child(3) .step-num{background:linear-gradient(135deg,#12c2b4,#8bd94a)}
  .step:nth-child(4) .step-num{background:linear-gradient(135deg,#ff9a3c,#ffc46b)}
  .step:nth-child(5) .step-num{background:linear-gradient(135deg,#ff5c8a,#ff9bb2)}
  .step h3{font-size:16px;margin-bottom:8px}
  .step p{font-size:14px;color:var(--ink2)}

  /* 案例 */
  .case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
  .case{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;box-shadow:var(--shadow-sm);margin:0;
    transition:transform .28s ease,box-shadow .28s ease;
  }
  .case:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
  .case-media{
    aspect-ratio:16/10;background:#f2f3fb;display:flex;align-items:center;justify-content:center;
    padding:10px;border-bottom:1px solid var(--line);
  }
  .case-media img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:10px}
  .case figcaption{padding:18px 20px}
  .case figcaption h3{font-size:16.5px;margin-bottom:6px}
  .case figcaption p{font-size:14px;color:var(--ink2)}

  /* 对比评测 */
  .score-card{
    display:flex;flex-wrap:wrap;align-items:center;gap:24px;
    background:linear-gradient(130deg,#f7f5ff,#f1fbfa 60%,#fff7f0);
    border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;margin-bottom:22px;box-shadow:var(--shadow-sm);
  }
  .score-main{display:flex;align-items:baseline;gap:8px}
  .score-main strong{font-size:46px;font-weight:800;letter-spacing:-.03em;color:var(--violet);line-height:1}
  .score-main span{font-size:15px;color:var(--muted)}
  .score-info{flex:1 1 260px}
  .score-stars{display:flex;gap:4px;margin-bottom:8px}
  .score-stars svg{width:20px;height:20px;fill:#ffb020}
  .score-info p{font-size:14.5px;color:var(--ink2)}
  .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
  table{border-collapse:collapse;width:100%;min-width:760px;font-size:14.5px}
  thead th{
    background:linear-gradient(120deg,#f4f3ff,#eefaf8);
    color:var(--ink);font-weight:700;text-align:left;
    padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap;
  }
  tbody th{
    text-align:left;font-weight:600;color:var(--ink);padding:14px 18px;
    border-bottom:1px solid var(--line);background:#fcfcff;white-space:nowrap;
  }
  tbody td{padding:14px 18px;border-bottom:1px solid var(--line);color:var(--ink2)}
  tbody tr:last-child th,tbody tr:last-child td{border-bottom:none}
  tbody tr:hover td,tbody tr:hover th{background:#f8f8ff}
  .col-best{color:var(--ink);font-weight:600;background:rgba(109,77,255,.045)}

  /* 评论 */
  .review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:18px}
  .review{display:flex;flex-direction:column;gap:12px}
  .review-text{font-size:14.5px;color:var(--ink2)}
  .review-user{display:flex;align-items:center;gap:12px;margin-top:auto}
  .avatar{
    width:40px;height:40px;border-radius:12px;flex:0 0 auto;
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-weight:700;font-size:15px;
    background:linear-gradient(135deg,var(--violet),var(--blue));
  }
  .review:nth-child(2) .avatar{background:linear-gradient(135deg,#3b8cff,#12c2b4)}
  .review:nth-child(3) .avatar{background:linear-gradient(135deg,#12c2b4,#8bd94a)}
  .review:nth-child(4) .avatar{background:linear-gradient(135deg,#ff9a3c,#ffc46b)}
  .review:nth-child(5) .avatar{background:linear-gradient(135deg,#ff5c8a,#ff9bb2)}
  .review:nth-child(6) .avatar{background:linear-gradient(135deg,#8b5cf6,#c4a3ff)}
  .review-name{font-size:14.5px;font-weight:600;color:var(--ink)}
  .review-role{font-size:13px;color:var(--muted)}

  /* Token 比价 */
  .price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(228px,1fr));gap:18px}
  .price-card{display:flex;flex-direction:column;gap:10px;position:relative}
  .price-card h3{font-size:17px}
  .price-tag{
    display:inline-block;font-size:12.5px;font-weight:600;color:var(--teal);
    background:rgba(18,194,180,.1);padding:4px 12px;border-radius:999px;align-self:flex-start;
  }
  .price-card ul{display:flex;flex-direction:column;gap:8px;margin-top:4px}
  .price-card li{position:relative;padding-left:18px;font-size:14px;color:var(--ink2)}
  .price-card li::before{
    content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:50%;
    background:linear-gradient(135deg,var(--violet),var(--teal));
  }

  /* 资讯 */
  .article-card{padding:24px}
  .article-card h3{font-size:18px;margin-bottom:14px}
  .articles-slot{
    border:1px dashed rgba(109,77,255,.34);border-radius:14px;
    padding:16px 18px;background:rgba(109,77,255,.035);
    color:var(--ink2);font-size:14.5px;margin-bottom:18px;word-break:break-all;
  }
  .article-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:10px}
  .article-links a{
    display:block;text-decoration:none;font-size:14.5px;color:var(--ink2);
    background:#fbfbff;border:1px solid var(--line);border-radius:12px;
    padding:12px 14px;transition:color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .article-links a:hover{color:var(--violet);border-color:rgba(109,77,255,.36);transform:translateY(-2px);box-shadow:var(--shadow-sm)}

  /* FAQ */
  .faq-list{display:flex;flex-direction:column;gap:12px}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    box-shadow:var(--shadow-sm);overflow:hidden;
    transition:border-color .25s ease,box-shadow .25s ease;
  }
  .faq-item[open]{border-color:rgba(109,77,255,.34);box-shadow:var(--shadow)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:17px 20px;font-size:15.5px;font-weight:600;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";flex:0 0 auto;font-size:20px;line-height:1;color:var(--violet);
    transition:transform .25s ease;
  }
  .faq-item[open] summary::after{transform:rotate(45deg)}
  .faq-answer{padding:0 20px 18px;font-size:14.5px;color:var(--ink2)}

  /* 加盟代理 */
  .partner-box{
    display:flex;flex-wrap:wrap;align-items:center;gap:22px;
    background:linear-gradient(125deg,#6d4dff,#3b8cff 52%,#12c2b4);
    border-radius:22px;padding:32px 28px;color:#fff;
    box-shadow:0 18px 40px rgba(70,80,200,.28);
  }
  .partner-box h2{font-size:clamp(21px,2.6vw,28px);color:#fff;margin-bottom:10px}
  .partner-box p{font-size:15px;color:rgba(255,255,255,.92);max-width:640px}
  .partner-actions{display:flex;flex-wrap:wrap;gap:12px;margin-left:auto}
  .btn-light{background:#fff;color:#4a3ad6;border-color:#fff;box-shadow:0 10px 24px rgba(0,0,0,.16)}
  .btn-light:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(0,0,0,.2)}
  .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.72)}
  .btn-outline:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}

  /* 联系我们 / 表单 */
  .contact-grid{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
  @media (min-width:900px){.contact-grid{grid-template-columns:.85fr 1.15fr}}
  .contact-card{display:flex;flex-direction:column;gap:14px}
  .contact-card h3{font-size:17px}
  .contact-list{display:flex;flex-direction:column;gap:10px}
  .contact-list li{font-size:14.5px;color:var(--ink2)}
  .contact-list a{color:var(--violet);text-decoration:none;border-bottom:1px dashed rgba(109,77,255,.5)}
  .contact-list a:hover{color:#4a3ad6}
  .kefu-qr{
    width:150px;border-radius:14px;border:1px solid var(--line);background:#fff;padding:8px;
    box-shadow:var(--shadow-sm);
  }
  .qr-wrap{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
  .qr-note{font-size:14px;color:var(--ink2);max-width:170px}

  .demand-form{display:grid;grid-template-columns:1fr;gap:16px}
  @media (min-width:640px){.demand-form{grid-template-columns:1fr 1fr}}
  .field{display:flex;flex-direction:column;gap:7px}
  .field.full{grid-column:1/-1}
  .field label{font-size:14px;font-weight:600;color:var(--ink)}
  .field input,.field select,.field textarea{
    width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);
    background:#fbfbff;font-family:inherit;font-size:14.5px;color:var(--ink);
    transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
  }
  .field textarea{resize:vertical;min-height:110px}
  .field input::placeholder,.field textarea::placeholder{color:#98a0b8}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:rgba(109,77,255,.55);background:#fff;
    box-shadow:0 0 0 4px rgba(109,77,255,.12);
  }
  .form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;align-items:center;gap:14px}
  .form-note{font-size:13px;color:var(--muted)}

  /* 页脚 */
  .site-footer{
    margin-top:16px;background:linear-gradient(180deg,#f7f7fe,#eceefa);
    border-top:1px solid var(--line);color:var(--ink);
    padding:44px 0 26px;
  }
  .footer-top{display:grid;grid-template-columns:1fr;gap:26px;margin-bottom:26px}
  @media (min-width:820px){.footer-top{grid-template-columns:1.4fr 1fr;gap:40px}}
  .footer-name{font-size:19px;font-weight:800;margin-bottom:10px;color:var(--ink)}
  .footer-desc{font-size:14.5px;color:var(--ink2);max-width:560px}
  .footer-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:10px;display:block}
  .footer-contact ul{display:flex;flex-direction:column;gap:8px}
  .footer-contact li{font-size:14px;color:var(--ink2)}
  .footer-contact a{color:var(--violet);text-decoration:none}
  .footer-contact a:hover{text-decoration:underline}
  .footer-links{border-top:1px solid rgba(17,26,51,.08);padding-top:20px;margin-bottom:20px}
  .link-list{display:flex;flex-wrap:wrap;gap:10px}
  .link-list a{
    font-size:14px;color:var(--ink2);text-decoration:none;
    background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;
    transition:color .2s ease,border-color .2s ease,transform .2s ease;
  }
  .link-list a:hover{color:var(--violet);border-color:rgba(109,77,255,.38);transform:translateY(-2px)}
  .footer-bottom{
    border-top:1px solid rgba(17,26,51,.08);padding-top:18px;
    display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;
  }
  .footer-bottom p{font-size:13.5px;color:var(--muted)}
  .footer-bottom a{color:var(--ink2);text-decoration:none;font-size:13.5px}
  .footer-bottom a:hover{color:var(--violet)}

  /* 浮动工具 */
  .float-tools{position:fixed;right:16px;bottom:20px;z-index:80;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
  .float-btn{
    width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;
    color:var(--violet);display:flex;align-items:center;justify-content:center;cursor:pointer;
    box-shadow:0 12px 26px rgba(28,38,88,.16);
    transition:transform .22s ease,box-shadow .22s ease,color .22s ease,background .22s ease;
  }
  .float-btn svg{width:22px;height:22px}
  .float-btn:hover{transform:translateY(-3px);box-shadow:0 18px 32px rgba(28,38,88,.22)}
  .float-btn.primary{background:linear-gradient(135deg,#6d4dff,#12c2b4);color:#fff;border-color:transparent}
  #backTop{display:none}
  #backTop.show{display:flex}
  .kefu-panel{
    width:220px;background:#fff;border:1px solid var(--line);border-radius:16px;
    padding:16px;box-shadow:0 18px 38px rgba(28,38,88,.18);
    font-size:13.5px;color:var(--ink2);
  }
  .kefu-panel[hidden]{display:none}
  .kefu-panel .k-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:8px}
  .kefu-panel p{margin-bottom:6px}
  .kefu-panel a{color:var(--violet);text-decoration:none}
  .kefu-panel a:hover{text-decoration:underline}

  /* 动效 */
  html.js .reveal{opacity:0;transform:translateY(20px);transition:opacity .66s cubic-bezier(.22,.7,.3,1),transform .66s cubic-bezier(.22,.7,.3,1)}
  html.js .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    html.js .reveal{opacity:1;transform:none;transition:none}
    *{animation:none!important;transition:none!important}
  }