:root{
    --ink:#0E1016;
    --ink-2:#565A6B;
    --ink-3:#8A8FA3;
    --line:#E7E8EF;
    --bg:#FFFFFF;
    --bg-2:#F7F8FC;
    --brand:#4F46E5;
    --brand-2:#06B6D4;
    --grad:linear-gradient(115deg,#6366F1 0%,#A855F7 50%,#06B6D4 100%);
    --r:16px;
    --maxw:1120px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,sans-serif;
    color:var(--ink);background:var(--bg);line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
  a{color:inherit}

  /* ============ Header ============ */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.86);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:66px}
  .logo{display:flex;align-items:center;gap:11px;font-weight:750;font-size:16.5px;letter-spacing:-.3px;text-decoration:none}
  .mark{
    width:32px;height:32px;border-radius:9px;background:var(--grad);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:15px;font-weight:800;flex-shrink:0;
  }
  .nav-links{display:flex;gap:28px;font-size:14.5px;color:var(--ink-2)}
  .nav-links a{text-decoration:none;transition:color .18s}
  .nav-links a:hover{color:var(--brand)}
  .nav-cta{
    font-size:14px;font-weight:600;color:#fff;background:var(--ink);
    padding:9px 18px;border-radius:10px;text-decoration:none;transition:.18s;
  }
  .nav-cta:hover{background:var(--brand)}

  /* ============ Hero ============ */
  .hero{
    position:relative;overflow:hidden;
    background:#0A0D16;color:#fff;
    padding:96px 0 104px;
  }
  .hero::before{
    content:"";position:absolute;inset:-40% -20% auto -20%;height:120%;
    background:
      radial-gradient(50% 55% at 22% 18%, rgba(99,102,241,.32), transparent 70%),
      radial-gradient(45% 50% at 78% 12%, rgba(6,182,212,.24), transparent 70%),
      radial-gradient(40% 45% at 55% 85%, rgba(168,85,247,.20), transparent 70%);
    pointer-events:none;
  }
  .hero .wrap{position:relative;z-index:1}
  .eyebrow{
    display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:1.2px;
    color:#A5B4FC;border:1px solid rgba(165,180,252,.32);border-radius:100px;
    padding:6px 15px;margin-bottom:26px;
  }
  .hero h1{
    font-size:clamp(30px,4.6vw,50px);line-height:1.24;letter-spacing:-1.1px;
    font-weight:800;margin-bottom:24px;max-width:860px;
  }
  .hero h1 .g{
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero p.lead{
    font-size:17px;color:#B9BFD0;max-width:760px;line-height:1.85;
  }
  .hero p.lead strong{color:#fff;font-weight:600}
  .tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
  .tag{
    font-size:13.5px;color:#CBD3E8;border:1px solid rgba(203,211,232,.22);
    border-radius:100px;padding:6px 15px;background:rgba(255,255,255,.03);
  }
  .hero-actions{display:flex;gap:13px;margin-top:38px;flex-wrap:wrap}
  .btn{
    display:inline-block;padding:13px 28px;border-radius:12px;font-size:15px;font-weight:600;
    text-decoration:none;transition:.18s;border:1px solid transparent;
  }
  .btn-primary{background:#fff;color:#0A0D16}
  .btn-primary:hover{background:#E8EAFF}
  .btn-ghost{border-color:rgba(255,255,255,.26);color:#fff}
  .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08)}

  /* ============ Section ============ */
  section{padding:84px 0;border-bottom:1px solid var(--line)}
  section.alt{background:var(--bg-2)}
  .sec-head{max-width:740px;margin-bottom:52px}
  .sec-label{
    font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--brand);
    text-transform:uppercase;display:block;margin-bottom:14px;
  }
  h2{font-size:clamp(23px,3vw,32px);font-weight:780;letter-spacing:-.7px;line-height:1.32;margin-bottom:16px}
  .sec-head p{font-size:16px;color:var(--ink-2)}

  /* ============ 业务卡 ============ */
  .biz{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
  .biz-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:32px 28px;transition:.22s;position:relative;overflow:hidden;
  }
  .biz-card::after{
    content:"";position:absolute;left:0;top:0;height:3px;width:100%;
    background:var(--grad);opacity:0;transition:opacity .22s;
  }
  .biz-card:hover{transform:translateY(-3px);box-shadow:0 14px 40px rgba(16,20,40,.08)}
  .biz-card:hover::after{opacity:1}
  .biz-ico{
    width:42px;height:42px;border-radius:12px;
    background:linear-gradient(135deg,#EEF0FF,#E4F6FB);
    display:flex;align-items:center;justify-content:center;
    font-size:21px;margin-bottom:18px;
  }
  .biz-card h3{font-size:18px;font-weight:730;letter-spacing:-.3px;margin-bottom:10px}
  .biz-card > p{font-size:14.5px;color:var(--ink-2);margin-bottom:18px}
  .biz-card ul{list-style:none;display:grid;gap:8px}
  .biz-card li{
    font-size:14px;color:var(--ink-2);padding-left:19px;position:relative;
  }
  .biz-card li::before{
    content:"";position:absolute;left:0;top:.68em;
    width:6px;height:6px;border-radius:50%;background:var(--brand-2);
  }

  /* ============ 技术栈 ============ */
  .stack{display:flex;flex-wrap:wrap;gap:10px}
  .chip{
    font-size:14px;color:var(--ink);background:#fff;border:1px solid var(--line);
    border-radius:10px;padding:9px 16px;font-weight:500;
  }
  .stack-group{margin-bottom:30px}
  .stack-group:last-child{margin-bottom:0}
  .stack-group h3{
    font-size:13px;font-weight:700;letter-spacing:.9px;color:var(--ink-3);
    text-transform:uppercase;margin-bottom:14px;
  }

  /* ============ 流程 ============ */
  .steps{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:0;counter-reset:s}
  .step{position:relative;padding:0 22px 0 0}
  .step::before{
    counter-increment:s;content:counter(s,decimal-leading-zero);
    display:block;font-size:26px;font-weight:800;letter-spacing:-1px;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
    margin-bottom:12px;
  }
  .step h3{font-size:16px;font-weight:720;margin-bottom:8px}
  .step p{font-size:14.5px;color:var(--ink-2)}

  /* ============ 关于 ============ */
  .about-grid{display:grid;grid-template-columns:1.25fr .95fr;gap:52px;align-items:start}
  .about-grid p{font-size:15.5px;color:var(--ink-2);margin-bottom:16px}
  .about-grid p strong{color:var(--ink);font-weight:650}
  .fact-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;
  }
  .fact-card h3{font-size:14px;font-weight:700;letter-spacing:.6px;color:var(--ink-3);text-transform:uppercase;margin-bottom:18px}
  .fact-row{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px}
  .fact-row:last-child{border-bottom:0}
  .fact-row .k{color:var(--ink-3);flex-shrink:0}
  .fact-row .v{color:var(--ink);font-weight:550;text-align:right;word-break:break-all}

  /* ============ FAQ ============ */
  .faq{display:grid;gap:14px;max-width:900px}
  .qa{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 26px}
  .qa h3{font-size:16px;font-weight:720;margin-bottom:10px;letter-spacing:-.2px}
  .qa h3::before{content:"Q";display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:6px;background:var(--brand);color:#fff;font-size:12px;font-weight:800;margin-right:10px;vertical-align:1px}
  .qa p{font-size:14.5px;color:var(--ink-2);padding-left:30px}

  /* ============ CTA ============ */
  .cta{
    background:#0A0D16;color:#fff;text-align:center;padding:86px 0;border-bottom:0;
    position:relative;overflow:hidden;
  }
  .cta::before{
    content:"";position:absolute;inset:0;
    background:radial-gradient(50% 90% at 50% 0%, rgba(99,102,241,.30), transparent 70%);
  }
  .cta .wrap{position:relative;z-index:1}
  .cta h2{color:#fff;margin-bottom:16px}
  .cta p{color:#B9BFD0;font-size:16px;max-width:620px;margin:0 auto 34px}

  /* ============ Footer ============ */
  footer{background:#0A0D16;color:#8B92A8;padding:60px 0 40px;font-size:14px;border-top:1px solid rgba(255,255,255,.07)}
  .foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;margin-bottom:44px}
  .foot-grid h4{color:#fff;font-size:14.5px;font-weight:700;margin-bottom:16px}
  .foot-grid p{line-height:1.9;color:#8B92A8}
  .foot-grid a{color:#8B92A8;text-decoration:none;display:block;margin-bottom:9px;transition:color .18s}
  .foot-grid a:hover{color:#fff}
  .qr{width:104px;border-radius:10px;background:#fff;padding:6px;display:block;margin-top:14px}
  .foot-bottom{
    border-top:1px solid rgba(255,255,255,.09);padding-top:26px;
    display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
    font-size:13px;color:#6E7590;
  }
  .foot-bottom a{color:#6E7590;text-decoration:none}
  .foot-bottom a:hover{color:#fff;text-decoration:underline}
  .beian{display:flex;gap:20px;flex-wrap:wrap;align-items:center}

  /* ============ 技术负责人 ============ */
  .person{
    display:grid;grid-template-columns:auto 1fr;gap:34px;align-items:start;
    background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:38px 36px;
  }
  .avatar{
    width:98px;height:98px;border-radius:24px;background:var(--grad);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:38px;font-weight:800;flex-shrink:0;
    box-shadow:0 12px 30px rgba(99,102,241,.22);
  }
  .person h3{font-size:25px;font-weight:780;letter-spacing:-.5px;margin-bottom:7px}
  .person .role{font-size:14.5px;color:var(--brand);font-weight:650;margin-bottom:4px}
  .person p{font-size:15px;color:var(--ink-2);margin-bottom:14px}
  .person p:last-child{margin-bottom:0}
  .person p strong{color:var(--ink);font-weight:700}
  .exp-row{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0 24px}
  .exp{
    background:var(--bg-2);border:1px solid var(--line);border-radius:10px;
    padding:10px 16px;font-size:14px;color:var(--ink);font-weight:550;
  }
  .exp b{color:var(--brand);font-weight:800;font-size:16px;margin-right:3px}
  .person-link{margin-top:22px;padding-top:20px;border-top:1px dashed var(--line)}
  .person-link a{
    display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;
    color:var(--brand);text-decoration:none;
    border:1px solid var(--line);border-radius:10px;padding:9px 16px;background:var(--bg-2);
    transition:.18s;
  }
  .person-link a:hover{border-color:var(--brand);background:#fff}

  @media(max-width:900px){
    .about-grid{grid-template-columns:1fr;gap:34px}
    .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
    .nav-links{display:none}
  }
  @media(max-width:640px){
    .wrap{padding:0 20px}
    .hero{padding:68px 0 74px}
    section{padding:60px 0}
    .foot-grid{grid-template-columns:1fr}
    .step{padding-bottom:28px}
    .person{grid-template-columns:1fr;padding:28px 22px;gap:24px}
  }

  /* ==========================================================
     动效层
     原则：全部为装饰性效果，正文内容始终存在于 HTML 中，
          搜索引擎与 AI 爬虫不执行 JS，抓取完全不受影响。
          无 JS 时：遮罩不可见、不拦截操作，内容照常显示。
     ========================================================== */

  /* ---------- 首屏开场遮罩 ---------- */
  .intro{
    position:fixed;inset:0;z-index:9999;
    display:flex;align-items:center;justify-content:center;
    background:radial-gradient(60% 60% at 50% 45%, #101728 0%, #070A11 100%);
    opacity:0;pointer-events:none;
    transition:opacity .55s ease;
  }
  .intro.on{opacity:1;pointer-events:auto}
  .intro.off{opacity:0;pointer-events:none}
  html.intro-active{overflow:hidden}
  .intro-inner{text-align:center;padding:0 24px}
  .intro-mark{
    width:76px;height:76px;margin:0 auto 28px;border-radius:22px;
    background:var(--grad);
    display:flex;align-items:center;justify-content:center;
    color:#fff;font-size:33px;font-weight:800;
    box-shadow:0 0 0 1px rgba(255,255,255,.10), 0 20px 64px rgba(99,102,241,.45);
    animation:markPulse 1.8s ease-in-out infinite;
  }
  @keyframes markPulse{
    0%,100%{transform:translateY(0) scale(1);
      box-shadow:0 0 0 1px rgba(255,255,255,.10),0 20px 64px rgba(99,102,241,.45)}
    50%{transform:translateY(-7px) scale(1.05);
      box-shadow:0 0 0 1px rgba(255,255,255,.18),0 28px 84px rgba(99,102,241,.65)}
  }
  .intro-name{
    color:#fff;font-size:17px;font-weight:700;letter-spacing:2.5px;margin-bottom:11px;
    animation:introFade .8s cubic-bezier(.22,1,.36,1) .12s backwards;
  }
  .intro-tag{
    color:#8B93AD;font-size:11.5px;letter-spacing:3.4px;font-weight:600;
    animation:introFade .8s cubic-bezier(.22,1,.36,1) .26s backwards;
  }
  /* 只声明 from：元素默认即为最终可见状态。
     若动画因任何原因未执行，文字依旧正常显示，不会留白。 */
  @keyframes introFade{from{opacity:0;transform:translateY(10px)}}
  .intro-bar{
    width:200px;height:2px;margin:32px auto 0;border-radius:2px;
    background:rgba(255,255,255,.10);overflow:hidden;
  }
  .intro-bar i{
    display:block;height:100%;width:100%;border-radius:2px;background:var(--grad);
    transform:translateX(0);
    animation:introBar 1.5s cubic-bezier(.55,0,.2,1) .1s backwards;
  }
  @keyframes introBar{from{transform:translateX(-100%)}}
  .intro-hint{
    position:absolute;bottom:36px;left:0;right:0;text-align:center;
    color:#454D66;font-size:11.5px;letter-spacing:1.8px;
  }

  /* ---------- Hero 光效与粒子画布 ---------- */
  .hero::before{z-index:0;animation:aurora 22s ease-in-out infinite}
  @keyframes aurora{
    0%,100%{transform:translate3d(0,0,0) scale(1);opacity:.88}
    50%{transform:translate3d(-2.5%,2.5%,0) scale(1.09);opacity:1}
  }
  .hero::after{
    content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
    background-size:58px 58px;
    -webkit-mask-image:radial-gradient(72% 62% at 50% 42%,#000 0%,transparent 78%);
    mask-image:radial-gradient(72% 62% at 50% 42%,#000 0%,transparent 78%);
  }
  #hero-canvas{
    position:absolute;inset:0;z-index:1;width:100%;height:100%;
    opacity:0;transition:opacity 1.2s ease .1s;
  }
  #hero-canvas.ready{opacity:1}
  .hero .wrap{position:relative;z-index:2}

  /* ---------- 滚动入场 ---------- */
  .js-ready .reveal{
    opacity:0;transform:translateY(24px);
    transition:opacity .75s cubic-bezier(.22,1,.36,1),transform .75s cubic-bezier(.22,1,.36,1);
  }
  .js-ready .reveal.in{opacity:1;transform:none}

  /* ---------- 首屏文字入场 ---------- */
  .js-ready .hero .eyebrow,
  .js-ready .hero h1,
  .js-ready .hero .lead,
  .js-ready .hero .tags,
  .js-ready .hero-actions{animation:heroIn .9s cubic-bezier(.22,1,.36,1) backwards}
  .js-ready .hero h1{animation-delay:.10s}
  .js-ready .hero .lead{animation-delay:.26s}
  .js-ready .hero .tags{animation-delay:.36s}
  .js-ready .hero-actions{animation-delay:.46s}
  /* 同上：只声明 from。首屏文字在任何降级情况下都必须可见。 */
  @keyframes heroIn{from{opacity:0;transform:translateY(28px)}}

  /* ---------- 无障碍：尊重「减少动态效果」 ---------- */
  @media (prefers-reduced-motion: reduce){
    .hero::before,.intro-mark,.intro-bar i,.intro-name,.intro-tag{animation:none}
    #hero-canvas{display:none}
    .js-ready .reveal{opacity:1;transform:none;transition:none}
    .js-ready .hero .eyebrow,.js-ready .hero h1,.js-ready .hero .lead,
    .js-ready .hero .tags,.js-ready .hero-actions{animation:none}
  }

  /* ==========================================================
     内容层扩展（软件行业内容 / 服务矩阵 / 行业方案 / 工程保障）
     ========================================================== */

  /* ---------- 软件服务矩阵 ---------- */
  .svc{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px}
  .svc-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--r);
    padding:28px 26px;transition:.22s;
  }
  .svc-card:hover{border-color:#C7CCF7;box-shadow:0 12px 34px rgba(16,20,40,.07);transform:translateY(-2px)}
  .svc-card h3{font-size:17px;font-weight:730;letter-spacing:-.3px;margin-bottom:10px}
  .svc-card > p{font-size:14.5px;color:var(--ink-2)}
  .svc-meta{
    margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);
    display:flex;flex-wrap:wrap;gap:7px;
  }
  .svc-meta span{
    font-size:12.5px;color:var(--ink-3);background:var(--bg-2);
    border:1px solid var(--line);border-radius:7px;padding:4px 10px;
  }

  /* ---------- 行业解决方案 ---------- */
  .ind{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:16px}
  .ind-card{
    background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 22px;
    transition:.22s;
  }
  .ind-card:hover{border-color:#C7CCF7;box-shadow:0 10px 28px rgba(16,20,40,.06)}
  .ind-card h3{font-size:15.5px;font-weight:720;letter-spacing:-.2px;margin-bottom:9px}
  .ind-card p{font-size:14px;color:var(--ink-2)}

  /* ---------- 工程与质量保障 ---------- */
  .eng{display:grid;grid-template-columns:repeat(auto-fit,minmax(288px,1fr));gap:26px 30px}
  .eng-item{display:flex;gap:14px;align-items:flex-start}
  .eng-ico{
    width:36px;height:36px;border-radius:10px;flex-shrink:0;
    background:linear-gradient(135deg,#EEF0FF,#E4F6FB);
    display:flex;align-items:center;justify-content:center;font-size:17px;
  }
  .eng-item h3{font-size:15.5px;font-weight:720;letter-spacing:-.2px;margin-bottom:6px}
  .eng-item p{font-size:14px;color:var(--ink-2)}

  /* ---------- 交付指标条 ---------- */
  .kpis{
    display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:18px;
    margin-top:44px;padding-top:38px;border-top:1px solid var(--line);
  }
  .kpi b{
    display:block;font-size:clamp(26px,3.4vw,34px);font-weight:800;letter-spacing:-1.2px;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
    margin-bottom:6px;
  }
  .kpi span{font-size:14px;color:var(--ink-2)}

  /* ==========================================================
     子页面（服务详情页）
     ========================================================== */
  .crumb{font-size:13px;color:var(--ink-3);margin-bottom:20px}
  .crumb a{color:var(--ink-3);text-decoration:none;transition:color .18s}
  .crumb a:hover{color:var(--brand)}
  .crumb i{font-style:normal;margin:0 9px;color:#C3C7D6}

  .page-hero{background:#0A0D16;color:#fff;padding:76px 0 84px;position:relative;overflow:hidden}
  .page-hero::before{
    content:"";position:absolute;inset:-40% -20% auto -20%;height:120%;pointer-events:none;
    background:
      radial-gradient(50% 55% at 24% 18%, rgba(99,102,241,.30), transparent 70%),
      radial-gradient(45% 50% at 78% 14%, rgba(6,182,212,.22), transparent 70%);
  }
  .page-hero .wrap{position:relative;z-index:1}
  .page-hero .crumb{color:#6C748F}
  .page-hero .crumb a{color:#8B93AD}
  .page-hero .crumb a:hover{color:#fff}
  .page-hero .crumb i{color:#4A526B}
  .page-hero h1{
    font-size:clamp(25px,3.5vw,39px);font-weight:800;letter-spacing:-.9px;
    line-height:1.3;margin-bottom:18px;max-width:840px;
  }
  .page-hero > .wrap > p{color:#B9BFD0;font-size:16.5px;max-width:770px;line-height:1.85}
  .page-hero .tags{margin-top:26px}

  .prose{max-width:840px}
  .prose h2{font-size:clamp(20px,2.6vw,27px);font-weight:760;letter-spacing:-.5px;margin:0 0 18px;line-height:1.34}
  .prose h3{font-size:17.5px;font-weight:730;letter-spacing:-.2px;margin:34px 0 10px}
  .prose h3:first-child{margin-top:0}
  .prose p{font-size:15.5px;color:var(--ink-2);margin-bottom:16px}
  .prose p strong,.prose li strong{color:var(--ink);font-weight:650}
  .prose ul{list-style:none;display:grid;gap:10px;margin-bottom:20px}
  .prose li{font-size:15px;color:var(--ink-2);padding-left:21px;position:relative}
  .prose li::before{
    content:"";position:absolute;left:0;top:.7em;
    width:6px;height:6px;border-radius:50%;background:var(--brand-2);
  }
  .prose .note{
    background:var(--bg-2);border:1px solid var(--line);border-left:3px solid var(--brand);
    border-radius:10px;padding:18px 22px;font-size:14.5px;color:var(--ink-2);margin:24px 0;
  }

  /* 子页面：正文 + 侧栏 */
  .doc-grid{display:grid;grid-template-columns:1fr 300px;gap:56px;align-items:start}
  .doc-aside{position:sticky;top:92px;display:grid;gap:18px}
  .aside-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px 22px}
  .aside-card h3{font-size:13px;font-weight:700;letter-spacing:.7px;color:var(--ink-3);text-transform:uppercase;margin-bottom:14px}
  .aside-card ul{list-style:none;display:grid;gap:9px}
  .aside-card li{font-size:14px;color:var(--ink-2)}
  .aside-card a{color:var(--brand);text-decoration:none;font-size:14px;font-weight:600}
  .aside-card a:hover{text-decoration:underline}
  .aside-cta{background:#0A0D16;border-color:#0A0D16}
  .aside-cta h3{color:#6C748F}
  .aside-cta p{color:#B9BFD0;font-size:14px;margin-bottom:16px;line-height:1.8}

  @media(max-width:900px){
    .doc-grid{grid-template-columns:1fr;gap:36px}
    .doc-aside{position:static}
  }

  /* ---------- 卡片内链（首页 → 服务详情页） ---------- */
  .card-link{
    display:inline-flex;align-items:center;gap:6px;margin-top:18px;
    font-size:14px;font-weight:650;color:var(--brand);text-decoration:none;
    transition:gap .18s ease;
  }
  .card-link:hover{gap:11px}
  .card-link::after{content:"→";font-weight:700}

  /* ==========================================================
     正文增强（全站 SEO 内容层）
     ========================================================== */

  /* 正文内链：可点击性对 SEO 与阅读体验都重要，必须与正文区分开 */
  .prose a{
    color:var(--brand);text-decoration:none;
    border-bottom:1px solid rgba(79,70,229,.28);
    transition:border-color .18s,color .18s;
  }
  .prose a:hover{border-bottom-color:var(--brand)}
  .prose a.card-link{border-bottom:0}
  .prose code{
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-size:.875em;background:var(--bg-2);border:1px solid var(--line);
    border-radius:5px;padding:1px 6px;color:#4338CA;
  }

  /* 分节间距：连续 h2 之间需要明显留白，避免看起来像挤在一起 */
  .prose h2{margin:52px 0 18px}
  .prose h2:first-child{margin-top:0}
  .prose h3{margin:36px 0 10px}
  .prose h2 + p, .prose h2 + ul, .prose h2 + ol, .prose h2 + .tbl-wrap{margin-top:0}
  .prose ul, .prose ol{margin-bottom:22px}
  .prose .note{line-height:1.85}

  /* 无侧栏页面的正文容器：加宽但仍限制阅读行宽 */
  .prose-wide{max-width:100%}
  .prose-wide > h2, .prose-wide > p, .prose-wide > ul, .prose-wide > ol{max-width:900px}
  .prose-wide > .tbl-wrap{max-width:100%}
  .prose-wide .faq{margin-bottom:8px}

  /* ---------- 表格（规格表 / 对照表） ---------- */
  .tbl-wrap{
    overflow-x:auto;-webkit-overflow-scrolling:touch;
    margin:0 0 26px;border:1px solid var(--line);border-radius:12px;background:#fff;
  }
  table.spec-table{
    width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px;
  }
  table.spec-table th, table.spec-table td{
    text-align:left;padding:13px 18px;border-bottom:1px solid var(--line);
    vertical-align:top;line-height:1.7;
  }
  table.spec-table thead th{
    background:var(--bg-2);font-weight:700;color:var(--ink);font-size:13.5px;
    letter-spacing:.2px;white-space:nowrap;
  }
  table.spec-table tbody tr:last-child th,
  table.spec-table tbody tr:last-child td{border-bottom:0}
  table.spec-table tbody th{
    font-weight:650;color:var(--ink);background:#FCFCFE;
    white-space:nowrap;width:1%;border-right:1px solid var(--line);
  }
  table.spec-table td{color:var(--ink-2)}
  table.spec-table td strong{color:var(--ink)}
  table.spec-table a{color:var(--brand);text-decoration:none;border-bottom:1px solid rgba(79,70,229,.28)}
  table.spec-table a:hover{border-bottom-color:var(--brand)}
  table.spec-table code{
    font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
    font-size:12.5px;color:var(--ink-3);background:var(--bg-2);
    border:1px solid var(--line);border-radius:5px;padding:1px 6px;
  }
  .prose-wide table.spec-table code{white-space:nowrap}

  /* ---------- 页面顶部导航：条目变多后需要在窄屏收起 ---------- */
  @media(max-width:1024px){
    .nav-links{gap:19px;font-size:14px}
  }
  @media(max-width:900px){
    .nav-links{gap:15px;font-size:13.5px}
  }
  @media(max-width:820px){
    .nav{height:auto;flex-wrap:wrap;gap:10px;padding-top:12px;padding-bottom:12px}
    .nav-links{order:3;width:100%;justify-content:flex-start;flex-wrap:wrap;gap:8px 16px}
    .nav-links a{font-size:13.5px}
  }

  /* 表格在窄屏加一点内边距收敛 */
  @media(max-width:640px){
    table.spec-table th, table.spec-table td{padding:11px 14px;font-size:14px}
    .prose h2{margin-top:40px}
  }