*{margin:0;padding:0;box-sizing:border-box;}
  :root{
    --red:#d7263d;
    --red-deep:#a8152b;
    --red-soft:#fdecee;
    --ink:#231416;
    --ink-2:#4a3a3d;
    --ink-3:#7a6a6d;
    --line:#f0dadd;
    --bg:#fffaf9;
    --card:#ffffff;
    --radius:16px;
  }
  html{scroll-behavior:smooth;}
  body{
    font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
    background:linear-gradient(180deg,#fff6f5 0%,#fffaf9 32%,#fff5f4 100%);
    color:var(--ink);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;height:auto;display:block;}
  a{text-decoration:none;color:inherit;}
  .container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
  h1,h2,h3,h4{line-height:1.35;font-weight:800;letter-spacing:.2px;}
  h2{font-size:clamp(22px,3vw,32px);}
  h3{font-size:clamp(17px,2vw,20px);}
  .section{padding:64px 0;}
  .section-head{max-width:760px;margin:0 auto 38px;text-align:center;}
  .eyebrow{
    display:inline-block;font-size:12px;font-weight:700;letter-spacing:2px;
    color:var(--red);background:var(--red-soft);padding:6px 14px;border-radius:100px;
    margin-bottom:14px;text-transform:uppercase;
  }
  .section-head p{color:var(--ink-3);margin-top:12px;font-size:15px;}

  /* ---------- 顶部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(255,250,249,.92);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav-inner{
    display:flex;align-items:center;justify-content:space-between;
    min-height:68px;gap:16px;
  }
  .brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
  .brand .ai-page-logo{width:auto;max-height:38px;}
  .brand-text{display:flex;flex-direction:column;}
  .brand-name{font-size:16px;font-weight:800;color:var(--ink);letter-spacing:1px;}
  .brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.5px;}
  .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;}
  .nav-links a{
    font-size:14px;color:var(--ink-2);padding:8px 11px;border-radius:8px;
    transition:color .2s,background .2s;font-weight:500;
  }
  .nav-links a:hover{color:var(--red);background:var(--red-soft);}
  .nav-cta{
    display:inline-flex;align-items:center;gap:6px;flex-shrink:0;
    background:linear-gradient(135deg,var(--red),var(--red-deep));
    color:#fff;font-size:14px;font-weight:700;
    padding:10px 20px;border-radius:100px;
    box-shadow:0 8px 18px rgba(215,38,61,.28);
    transition:transform .2s,box-shadow .2s;
  }
  .nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(215,38,61,.36);}
  .nav-toggle{
    display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
    background:#fff;cursor:pointer;position:relative;flex-shrink:0;
  }
  .nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
    position:absolute;left:50%;transform:translateX(-50%);
    width:18px;height:2px;background:var(--red);border-radius:2px;transition:.25s;
    content:"";
  }
  .nav-toggle span{top:50%;margin-top:-1px;}
  .nav-toggle span::before{top:-6px;}
  .nav-toggle span::after{top:6px;}
  .nav-open .nav-toggle span{background:transparent;}
  .nav-open .nav-toggle span::before{top:0;transform:translateX(-50%) rotate(45deg);}
  .nav-open .nav-toggle span::after{top:0;transform:translateX(-50%) rotate(-45deg);}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;
    padding:76px 0 82px;
    background:
      radial-gradient(circle at 82% 12%, rgba(215,38,61,.16), transparent 46%),
      radial-gradient(circle at 8% 82%, rgba(215,38,61,.10), transparent 44%),
      linear-gradient(160deg,#fff3f2 0%,#ffeceb 46%,#fff8f7 100%);
  }
  .hero::before{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(215,38,61,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(215,38,61,.055) 1px,transparent 1px);
    background-size:46px 46px;
    mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
    -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 30%,transparent 78%);
    pointer-events:none;
  }
  .hero-grid{
    position:relative;z-index:2;
    display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;
  }
  .hero-badge{
    display:inline-flex;align-items:center;gap:8px;
    background:#fff;border:1px solid var(--line);color:var(--red-deep);
    font-size:13px;font-weight:700;padding:7px 16px;border-radius:100px;
    box-shadow:0 4px 14px rgba(215,38,61,.10);margin-bottom:22px;
  }
  .hero-badge::before{
    content:"";width:7px;height:7px;border-radius:50%;background:var(--red);
    animation:pulse 2s infinite;
  }
  @keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.45;transform:scale(.75);}}
  .hero h1{
    font-size:clamp(28px,4.4vw,46px);
    color:var(--ink);letter-spacing:.5px;margin-bottom:20px;
  }
  .hero h1 em{font-style:normal;color:var(--red);position:relative;}
  .hero h1 em::after{
    content:"";position:absolute;left:0;right:0;bottom:4px;height:8px;
    background:rgba(215,38,61,.16);border-radius:4px;z-index:-1;
  }
  .hero-desc{font-size:16px;color:var(--ink-2);max-width:540px;margin-bottom:28px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:700;padding:14px 30px;border-radius:100px;
    border:none;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;
    box-shadow:0 10px 24px rgba(215,38,61,.32);
  }
  .btn-primary:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(215,38,61,.4);}
  .btn-primary:active{transform:translateY(0) scale(.98);}
  .btn-ghost{
    background:#fff;color:var(--red-deep);border:1.5px solid rgba(215,38,61,.35);
  }
  .btn-ghost:hover{background:var(--red-soft);transform:translateY(-3px);}
  .hero-tags{display:flex;flex-wrap:wrap;gap:9px;}
  .hero-tags span{
    font-size:12.5px;color:var(--ink-2);background:rgba(255,255,255,.85);
    border:1px solid var(--line);padding:5px 13px;border-radius:100px;
  }
  .hero-panel{
    background:#fff;border-radius:22px;padding:26px;
    border:1px solid var(--line);
    box-shadow:0 24px 56px rgba(168,21,43,.14);
    position:relative;
  }
  .hero-panel-title{
    font-size:13px;font-weight:800;color:var(--ink);letter-spacing:1px;
    display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;
  }
  .hero-panel-title span{color:var(--red);font-size:12px;font-weight:700;}
  .hero-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
  .metric{
    background:linear-gradient(150deg,#fff6f5,#fdecee);
    border:1px solid var(--line);border-radius:14px;padding:16px;
    transition:transform .25s,box-shadow .25s;
  }
  .metric:hover{transform:translateY(-4px);box-shadow:0 12px 22px rgba(215,38,61,.12);}
  .metric b{display:block;font-size:22px;color:var(--red);font-weight:800;line-height:1.2;}
  .metric small{font-size:12px;color:var(--ink-3);display:block;margin-top:5px;}
  .hero-model-list{
    margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
    font-size:12.5px;color:var(--ink-3);line-height:1.9;
  }
  .hero-model-list strong{color:var(--ink-2);}

  /* ---------- 数据条 ---------- */
  .stats-strip{
    background:linear-gradient(135deg,var(--red-deep),var(--red));
    color:#fff;padding:36px 0;position:relative;overflow:hidden;
  }
  .stats-strip::after{
    content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
    border-radius:50%;background:rgba(255,255,255,.08);
  }
  .stats-grid{
    display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:2;
  }
  .stat-item{text-align:center;}
  .stat-item b{display:block;font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:.5px;}
  .stat-item small{font-size:13px;opacity:.88;display:block;margin-top:6px;}

  /* ---------- 关于我们 ---------- */
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;}
  .about-text p{color:var(--ink-2);margin-bottom:16px;font-size:15px;}
  .about-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px;}
  .about-point{
    background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px;
    font-size:13.5px;color:var(--ink-2);display:flex;align-items:flex-start;gap:9px;
    transition:border-color .2s,transform .2s;
  }
  .about-point:hover{border-color:rgba(215,38,61,.4);transform:translateY(-2px);}
  .about-point::before{
    content:"";flex-shrink:0;width:16px;height:16px;margin-top:3px;border-radius:50%;
    background:var(--red-soft);border:4px solid #fff;
    box-shadow:0 0 0 1.5px var(--red);
  }
  .about-media{
    display:grid;gap:14px;
  }
  .about-media figure{
    border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
    background:#fff;box-shadow:0 16px 34px rgba(168,21,43,.10);
  }
  .about-media figure img{width:100%;height:auto;object-fit:cover;}
  .about-media-inline{display:grid;grid-template-columns:1fr 1fr;gap:14px;}

  /* ---------- 服务能力 ---------- */
  .service-grid{
    display:grid;grid-template-columns:repeat(3,1fr);gap:22px;
  }
  .service-card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px 24px;transition:transform .28s,box-shadow .28s,border-color .28s;
    position:relative;overflow:hidden;
  }
  .service-card::before{
    content:"";position:absolute;left:0;top:0;width:100%;height:3px;
    background:linear-gradient(90deg,var(--red),rgba(215,38,61,.15));
    transform:scaleX(0);transform-origin:left;transition:transform .3s;
  }
  .service-card:hover{transform:translateY(-6px);box-shadow:0 20px 40px rgba(168,21,43,.13);border-color:rgba(215,38,61,.28);}
  .service-card:hover::before{transform:scaleX(1);}
  .service-icon{
    width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,var(--red-soft),#fff);
    border:1px solid var(--line);margin-bottom:16px;font-size:21px;
  }
  .service-card h3{margin-bottom:10px;color:var(--ink);font-size:17px;}
  .service-card p{font-size:14px;color:var(--ink-3);}

  /* ---------- 一站式制作 / 场景 ---------- */
  .scene-wrap{
    background:linear-gradient(180deg,#fff4f3 0%,#fffaf9 100%);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .scene-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 18px;
    transition:transform .25s,border-color .25s,box-shadow .25s;
  }
  .scene-item:hover{transform:translateY(-4px);border-color:rgba(215,38,61,.34);box-shadow:0 14px 28px rgba(168,21,43,.10);}
  .scene-item h4{font-size:14.5px;color:var(--ink);margin-bottom:7px;}
  .scene-item p{font-size:12.8px;color:var(--ink-3);line-height:1.65;}

  /* ---------- 模型标签云 ---------- */
  .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
  .tag-cloud span{
    font-size:13px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
    padding:7px 16px;border-radius:100px;transition:all .22s;
  }
  .tag-cloud span:hover{color:#fff;background:var(--red);border-color:var(--red);transform:translateY(-2px);}

  /* ---------- 行业方案 ---------- */
  .solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .solution-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;display:flex;flex-direction:column;gap:12px;
    transition:transform .25s,box-shadow .25s;
  }
  .solution-card:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(168,21,43,.11);}
  .solution-card .st{
    display:inline-block;font-size:12px;font-weight:700;color:var(--red-deep);
    background:var(--red-soft);padding:3px 11px;border-radius:100px;align-self:flex-start;
  }
  .solution-card h3{font-size:16.5px;}
  .solution-card p{font-size:13.5px;color:var(--ink-3);}
  .solution-card ul{list-style:none;display:flex;flex-direction:column;gap:7px;margin-top:2px;}
  .solution-card li{
    font-size:13px;color:var(--ink-2);padding-left:16px;position:relative;
  }
  .solution-card li::before{
    content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;
    background:var(--red);opacity:.75;
  }

  /* ---------- 服务网络 / 时间线 ---------- */
  .network-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
  .network-item{
    background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);
    border-radius:12px;padding:20px;
  }
  .network-item h4{font-size:15px;margin-bottom:8px;}
  .network-item p{font-size:13px;color:var(--ink-3);}

  .timeline{position:relative;margin-top:10px;padding-left:26px;}
  .timeline::before{
    content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
    background:linear-gradient(180deg,var(--red),rgba(215,38,61,.12));
  }
  .tl-item{position:relative;padding-bottom:26px;}
  .tl-item:last-child{padding-bottom:0;}
  .tl-item::before{
    content:"";position:absolute;left:-26px;top:5px;width:16px;height:16px;border-radius:50%;
    background:#fff;border:4px solid var(--red);box-shadow:0 0 0 4px rgba(215,38,61,.10);
  }
  .tl-item h4{font-size:15px;margin-bottom:5px;}
  .tl-item p{font-size:13.5px;color:var(--ink-3);}

  /* ---------- 案例 ---------- */
  .case-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:22px;}
  .case-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
    transition:transform .28s,box-shadow .28s;
  }
  .case-card:hover{transform:translateY(-5px);box-shadow:0 20px 40px rgba(168,21,43,.13);}
  .case-thumb{overflow:hidden;background:var(--red-soft);}
  .case-thumb img{width:100%;height:auto;object-fit:cover;transition:transform .5s;}
  .case-card:hover .case-thumb img{transform:scale(1.04);}
  .case-body{padding:20px 22px;}
  .case-body h3{font-size:16.5px;margin-bottom:8px;}
  .case-body p{font-size:13.5px;color:var(--ink-3);}
  .case-side{display:grid;gap:22px;}
  .case-side .case-card .case-body{padding:18px 20px;}
  .case-side-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}

  /* ---------- 对比评测 ---------- */
  .compare-wrap{
    background:linear-gradient(180deg,#fff6f5,#fffaf9);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  }
  .score-banner{
    display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    padding:26px 30px;margin-bottom:26px;
    box-shadow:0 18px 40px rgba(168,21,43,.10);
  }
  .score-main{text-align:center;padding-right:26px;border-right:1px solid var(--line);}
  .score-main b{font-size:46px;color:var(--red);font-weight:800;line-height:1;}
  .score-main span{display:block;font-size:13px;color:var(--ink-3);margin-top:6px;}
  .score-stars{color:#e8a33d;font-size:16px;letter-spacing:2px;margin-top:8px;}
  .score-text h3{font-size:18px;margin-bottom:8px;}
  .score-text p{font-size:14px;color:var(--ink-3);max-width:640px;}
  .table-scroll{overflow-x:auto;border-radius:14px;border:1px solid var(--line);background:#fff;}
  table{width:100%;border-collapse:collapse;min-width:640px;}
  thead th{
    background:linear-gradient(135deg,var(--red-deep),var(--red));color:#fff;
    font-size:13.5px;font-weight:700;padding:14px 18px;text-align:left;white-space:nowrap;
  }
  tbody td{
    padding:13px 18px;font-size:13.5px;color:var(--ink-2);border-top:1px solid var(--line);
  }
  tbody tr:nth-child(even){background:#fff9f8;}
  tbody td:first-child{font-weight:600;color:var(--ink);}
  .highlight-cell{color:var(--red-deep);font-weight:700;}

  /* ---------- Token 比价 ---------- */
  .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .price-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;
    position:relative;transition:transform .25s,box-shadow .25s;
  }
  .price-card:hover{transform:translateY(-5px);box-shadow:0 18px 36px rgba(168,21,43,.11);}
  .price-card.featured{
    border-color:var(--red);box-shadow:0 20px 44px rgba(215,38,61,.16);
  }
  .price-card.featured::after{
    content:"";position:absolute;inset:0;border-radius:var(--radius);
    pointer-events:none;border:2px solid rgba(215,38,61,.22);
  }
  .price-badge{
    display:inline-block;font-size:12px;font-weight:700;color:var(--red);
    background:var(--red-soft);padding:4px 12px;border-radius:100px;margin-bottom:14px;
  }
  .price-card h3{font-size:17px;margin-bottom:6px;}
  .price-val{font-size:30px;font-weight:800;color:var(--red);line-height:1.1;margin:10px 0 4px;}
  .price-val small{font-size:13px;color:var(--ink-3);font-weight:500;}
  .price-card p{font-size:13px;color:var(--ink-3);margin-top:10px;}
  .price-note{font-size:12px;color:var(--ink-3);text-align:center;margin-top:18px;}

  /* ---------- 评论 ---------- */
  .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .review-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
    display:flex;flex-direction:column;gap:14px;
    transition:transform .25s,box-shadow .25s;
  }
  .review-card:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(168,21,43,.10);}
  .review-top{display:flex;align-items:center;gap:12px;}
  .avatar{
    width:42px;height:42px;border-radius:50%;flex-shrink:0;
    background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;
    display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
  }
  .review-name{font-size:14px;font-weight:700;}
  .review-role{font-size:12px;color:var(--ink-3);}
  .review-text{font-size:13.5px;color:var(--ink-2);}
  .review-stars{color:#e8a33d;font-size:13px;letter-spacing:2px;}

  /* ---------- AI百科 / 文章 ---------- */
  .article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
  .article-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;
    display:flex;align-items:center;justify-content:space-between;gap:14px;
    transition:transform .22s,border-color .22s,box-shadow .22s;
  }
  .article-item:hover{transform:translateX(4px);border-color:rgba(215,38,61,.34);box-shadow:0 12px 24px rgba(168,21,43,.09);}
  .article-item span{font-size:14px;color:var(--ink-2);font-weight:500;}
  .article-item i{font-style:normal;color:var(--red);font-size:13px;font-weight:700;white-space:nowrap;}

  /* ---------- 表单 ---------- */
  .form-wrap{
    display:grid;grid-template-columns:.95fr 1.05fr;gap:34px;align-items:start;
  }
  .contact-info{display:grid;gap:14px;}
  .contact-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;
    display:flex;gap:14px;align-items:flex-start;
  }
  .contact-item h4{font-size:14px;margin-bottom:3px;}
  .contact-item p{font-size:13px;color:var(--ink-3);word-break:break-all;}
  .contact-icon{
    width:38px;height:38px;border-radius:10px;flex-shrink:0;
    background:var(--red-soft);color:var(--red-deep);
    display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;
  }
  .qr-box{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;
    display:flex;align-items:center;gap:16px;
  }
  .qr-box img{width:92px;height:92px;border-radius:10px;object-fit:cover;border:1px solid var(--line);}
  .qr-box h4{font-size:14px;margin-bottom:4px;}
  .qr-box p{font-size:13px;color:var(--ink-3);}
  .form-card{
    background:#fff;border:1px solid var(--line);border-radius:20px;padding:30px;
    box-shadow:0 20px 44px rgba(168,21,43,.10);
  }
  .form-card h3{font-size:19px;margin-bottom:6px;}
  .form-card > p{font-size:13.5px;color:var(--ink-3);margin-bottom:22px;}
  .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px;}
  .field label{font-size:13px;font-weight:700;color:var(--ink-2);}
  .field label i{color:var(--red);font-style:normal;}
  .field input,.field select,.field textarea{
    width:100%;font-family:inherit;font-size:14px;color:var(--ink);
    background:#fffaf9;border:1px solid var(--line);border-radius:10px;
    padding:12px 14px;transition:border-color .2s,box-shadow .2s,background .2s;
    outline:none;
  }
  .field input:focus,.field select:focus,.field textarea:focus{
    border-color:var(--red);background:#fff;box-shadow:0 0 0 3px rgba(215,38,61,.12);
  }
  .field textarea{resize:vertical;min-height:110px;}
  .form-card .btn{width:100%;margin-top:4px;}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
    transition:border-color .25s,box-shadow .25s;
  }
  .faq-item.open{border-color:rgba(215,38,61,.4);box-shadow:0 12px 26px rgba(168,21,43,.10);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:none;border:none;cursor:pointer;text-align:left;
    padding:18px 22px;font-size:14.5px;font-weight:700;color:var(--ink);font-family:inherit;
  }
  .faq-q span.icon{
    width:24px;height:24px;flex-shrink:0;border-radius:50%;
    background:var(--red-soft);color:var(--red);font-size:16px;font-weight:800;
    display:flex;align-items:center;justify-content:center;transition:transform .28s,background .28s,color .28s;
  }
  .faq-item.open .faq-q span.icon{transform:rotate(45deg);background:var(--red);color:#fff;}
  .faq-a{
    max-height:0;overflow:hidden;transition:max-height .32s ease;
  }
  .faq-a p{padding:0 22px 20px;font-size:13.8px;color:var(--ink-3);}

  /* ---------- 加盟代理 ---------- */
  .join-wrap{
    background:linear-gradient(135deg,var(--red-deep),var(--red));
    border-radius:24px;padding:44px 40px;color:#fff;position:relative;overflow:hidden;
  }
  .join-wrap::before{
    content:"";position:absolute;right:-70px;bottom:-70px;width:260px;height:260px;
    border-radius:50%;background:rgba(255,255,255,.08);
  }
  .join-wrap::after{
    content:"";position:absolute;left:-40px;top:-60px;width:180px;height:180px;
    border-radius:50%;background:rgba(255,255,255,.06);
  }
  .join-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.3fr .7fr;gap:34px;align-items:center;}
  .join-wrap h2{color:#fff;font-size:clamp(22px,3vw,30px);margin-bottom:14px;}
  .join-wrap p{color:rgba(255,255,255,.9);font-size:14.5px;max-width:620px;}
  .join-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;}
  .join-points span{
    font-size:12.5px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
    padding:6px 14px;border-radius:100px;
  }
  .join-btn{
    display:inline-flex;align-items:center;justify-content:center;
    background:#fff;color:var(--red-deep);font-weight:800;font-size:15px;
    padding:15px 32px;border-radius:100px;justify-self:end;
    transition:transform .2s,box-shadow .2s;
  }
  .join-btn:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,0,0,.2);}

  /* ---------- 友情链接 ---------- */
  .friend-links{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;}
  .friend-links a{
    font-size:13px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
    padding:7px 16px;border-radius:100px;transition:all .22s;
  }
  .friend-links a:hover{color:#fff;background:var(--red);border-color:var(--red);}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#2a1417;color:#f3d9dc;margin-top:0;padding-top:48px;
  }
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:30px;padding-bottom:34px;
  }
  .footer-brand{display:flex;flex-direction:column;gap:14px;}
  .footer-brand .ai-page-logo{max-height:36px;width:auto;filter:brightness(0) invert(1);}
  .footer-brand p{font-size:13px;color:#cfa9ae;line-height:1.75;}
  .footer-col h4{font-size:14px;color:#fff;margin-bottom:14px;}
  .footer-col ul{list-style:none;display:flex;flex-direction:column;gap:9px;}
  .footer-col a,.footer-col p{font-size:13px;color:#cfa9ae;transition:color .2s;}
  .footer-col a:hover{color:#fff;}
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,.12);padding:18px 0;
    display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  }
  .footer-bottom p{font-size:12.5px;color:#a8848a;}
  .footer-bottom a{color:#e7c4c8;}
  .footer-bottom a:hover{color:#fff;}

  /* ---------- 浮动客服 / 返回顶部 ---------- */
  .float-dock{
    position:fixed;right:18px;bottom:22px;z-index:120;
    display:flex;flex-direction:column;gap:10px;
  }
  .float-btn{
    width:48px;height:48px;border-radius:50%;border:none;cursor:pointer;
    background:#fff;color:var(--red-deep);font-size:13px;font-weight:800;
    box-shadow:0 10px 24px rgba(168,21,43,.24);
    display:flex;align-items:center;justify-content:center;flex-direction:column;
    line-height:1.1;transition:transform .22s,background .22s,color .22s;
  }
  .float-btn:hover{transform:translateY(-3px);background:var(--red);color:#fff;}
  .float-btn.kf{background:linear-gradient(135deg,var(--red),var(--red-deep));color:#fff;}
  .float-btn .ico{font-size:16px;}
  #backTop{opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s,transform .22s;}
  #backTop.show{opacity:1;visibility:visible;}
  .qr-pop{
    position:fixed;right:78px;bottom:76px;z-index:121;width:180px;
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:14px;
    box-shadow:0 20px 44px rgba(168,21,43,.22);
    opacity:0;visibility:hidden;transform:translateY(8px);transition:.28s;
  }
  .qr-pop.show{opacity:1;visibility:visible;transform:translateY(0);}
  .qr-pop img{width:100%;border-radius:8px;}
  .qr-pop p{font-size:12px;color:var(--ink-3);text-align:center;margin-top:8px;}

  /* ---------- 滚动渐入 ---------- */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;}
  .reveal.visible{opacity:1;transform:translateY(0);}

  /* ---------- 响应式 ---------- */
  @media (max-width:1024px){
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .hero-panel{max-width:560px;}
    .about-grid{grid-template-columns:1fr;gap:30px;}
    .service-grid,.solution-grid,.review-grid,.price-grid{grid-template-columns:repeat(2,1fr);}
    .scene-grid{grid-template-columns:repeat(2,1fr);}
    .network-grid{grid-template-columns:repeat(2,1fr);}
    .case-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
    .join-inner{grid-template-columns:1fr;gap:24px;}
    .join-btn{justify-self:start;}
    .form-wrap{grid-template-columns:1fr;}
    .score-banner{grid-template-columns:1fr;}
    .score-main{border-right:none;border-bottom:1px solid var(--line);padding-right:0;padding-bottom:18px;}
  }
  @media (max-width:820px){
    .nav-links{
      display:none;position:absolute;left:0;right:0;top:100%;
      background:#fff;border-bottom:1px solid var(--line);
      flex-direction:column;align-items:stretch;padding:10px 16px 18px;gap:0;
      box-shadow:0 18px 30px rgba(168,21,43,.12);
    }
    .nav-open .nav-links{display:flex;}
    .nav-links a{padding:12px 10px;border-radius:8px;}
    .nav-toggle{display:block;}
    .nav-cta{display:none;}
    .site-header .nav-inner{position:relative;}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
    .article-list{grid-template-columns:1fr;}
  }
  @media (max-width:640px){
    .section{padding:48px 0;}
    .hero{padding:56px 0 60px;}
    .hero-actions .btn{flex:1 1 100%;}
    .service-grid,.solution-grid,.review-grid,.price-grid,.scene-grid,.network-grid,.about-points,.form-row{
      grid-template-columns:1fr;
    }
    .stats-grid{grid-template-columns:1fr 1fr;}
    .hero-metrics{grid-template-columns:1fr 1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .join-wrap{padding:32px 24px;border-radius:18px;}
    .form-card{padding:24px 20px;}
    .about-media-inline{grid-template-columns:1fr;}
    .case-side-grid{grid-template-columns:1fr;}
    .float-dock{right:12px;bottom:16px;}
    .qr-pop{right:68px;width:160px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  }