:root{
    --brand:#F54300;
    --brand-2:#FF8A00;
    --ink:#231006;
    --ink-2:#5c4a3d;
    --line:#f0e2d6;
    --bg:#faf6f2;
    --card:#ffffff;
    --radius:16px;
    --shadow:0 10px 30px rgba(120,50,10,.08);
    --maxw:1080px;
  }
  *{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;
    color:var(--ink);
    background:var(--bg);
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px;}

  /* ---------- Skip link：键盘用户跳过导航直达正文 ---------- */
  .skip-link{
    position:absolute;left:-9999px;top:0;z-index:100;
    background:var(--brand);color:#fff;padding:12px 20px;border-radius:0 0 10px 0;
    text-decoration:none;font-size:15px;font-weight:700;
  }
  .skip-link:focus{left:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    color:#fff;
    background:
      radial-gradient(1200px 500px at 15% -10%, rgba(255,196,90,.5), transparent 60%),
      radial-gradient(900px 480px at 100% 0%, rgba(255,110,40,.55), transparent 55%),
      linear-gradient(135deg,#7a2400 0%, #F54300 55%, #FF8A00 100%);
    overflow:hidden;
  }
  .hero::after{
    content:"";
    position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
    background-size:44px 44px;
    mask-image:radial-gradient(circle at 60% 30%, #000 0%, transparent 75%);
    opacity:.7;pointer-events:none;
  }
  .hero-inner{position:relative;z-index:1;padding:60px 0 84px;}
  .brand-logo{
    display:block;width:180px;max-width:100%;height:auto;
    margin-bottom:24px;
    filter:drop-shadow(0 4px 14px rgba(60,20,0,.35));
  }
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;letter-spacing:.06em;
    padding:7px 14px;border-radius:999px;
    background:rgba(255,255,255,.18);
    border:1px solid rgba(255,255,255,.28);
  }
  @supports ((backdrop-filter:blur(6px)) or (-webkit-backdrop-filter:blur(6px))){
    .badge{background:rgba(255,255,255,.14);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);}
  }
  .badge .dot{width:7px;height:7px;border-radius:50%;background:#ffd166;box-shadow:0 0 10px #ffd166;}
  h1{
    font-size:clamp(28px,4.4vw,46px);
    line-height:1.25;margin:22px 0 14px;font-weight:800;
    letter-spacing:-.01em;
  }
  .hero .slogan{
    font-size:clamp(16px,2.1vw,20px);
    color:rgba(255,255,255,.92);max-width:760px;margin:0 0 26px;
  }
  .hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
  .hero-tags span{
    font-size:14px;padding:8px 14px;border-radius:10px;
    background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  }
  .hero-metrics{
    display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
    margin-top:44px;padding-top:30px;border-top:1px solid rgba(255,255,255,.2);
  }
  .hero-metrics .m b{display:block;font-size:clamp(20px,3vw,30px);font-weight:800;letter-spacing:-.02em;}
  .hero-metrics .m span{font-size:13px;color:rgba(255,255,255,.8);}

  /* ---------- Sections ---------- */
  section{padding:64px 0;}
  .sec-head{margin-bottom:34px;}
  .sec-kicker{
    display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
    color:var(--brand);text-transform:uppercase;margin-bottom:10px;
  }
  h2{font-size:clamp(22px,3vw,30px);margin:0 0 10px;font-weight:800;letter-spacing:-.01em;}
  .sec-sub{color:var(--ink-2);max-width:820px;margin:0;}

  .grid{display:grid;gap:18px;}
  .g3{grid-template-columns:repeat(3,1fr);}
  .g2{grid-template-columns:repeat(2,1fr);}

  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:26px;box-shadow:var(--shadow);
  }
  .card h3{margin:0 0 12px;font-size:18px;display:flex;align-items:center;gap:10px;}
  .card p{margin:0 0 10px;color:var(--ink-2);font-size:15px;}
  .card p:last-child{margin-bottom:0;}
  .num{
    flex:none;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
    font-size:14px;font-weight:800;color:#fff;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
  }
  .ico{
    flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
    font-size:17px;background:#fff1e6;color:var(--brand);
  }

  ul.clean{margin:10px 0 0;padding-left:0;list-style:none;}
  ul.clean li{position:relative;padding-left:22px;margin-bottom:9px;color:var(--ink-2);font-size:15px;}
  ul.clean li::before{
    content:"";position:absolute;left:4px;top:11px;width:7px;height:7px;border-radius:50%;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
  }

  /* ---------- Solution flow ---------- */
  .flow{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:step;}
  .flow .step{
    background:linear-gradient(180deg,#ffffff,#f7faff);
    border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative;
  }
  .flow .step b{display:block;font-size:16px;margin-bottom:6px;}
  .flow .step::before{
    counter-increment:step;content:counter(step,decimal-leading-zero);
    position:absolute;top:16px;right:18px;font-size:22px;font-weight:800;
    color:#ffe3cf;letter-spacing:-.02em;
  }
  .flow .step p{margin:0;color:var(--ink-2);font-size:14px;}

  /* ---------- Table-like rows ---------- */
  .rows{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow);}
  .row{display:grid;grid-template-columns:1.1fr 1.25fr 1.35fr 1.5fr;}
  .row>div{padding:16px 18px;border-bottom:1px solid var(--line);font-size:14.5px;}
  .row>div:not(:last-child){border-right:1px solid var(--line);}
  .row.head>div{background:#fff3ea;font-weight:700;color:var(--ink);font-size:13.5px;}
  .row:last-child>div{border-bottom:none;}
  .row .v{color:var(--ink-2);}
  .row .hl{color:#c2410c;font-weight:600;}

  /* ---------- Value cards ---------- */
  .value{display:grid;gap:14px;}
  .value .v-card{
    display:flex;gap:16px;padding:18px 20px;border:1px solid var(--line);
    border-radius:14px;background:#fff;
  }
  .value .v-card .k{flex:none;width:74px;font-weight:800;color:var(--brand);font-size:15px;}
  .value .v-card .t{color:var(--ink-2);font-size:14.5px;}
  .value .v-card .t em{font-style:normal;color:var(--ink);font-weight:700;display:block;margin-bottom:2px;}

  /* ---------- Founder ---------- */
  .founder{
    background:linear-gradient(180deg,#ffffff,#f7faff);
    border:1px solid var(--line);border-radius:var(--radius);
    padding:40px 42px;box-shadow:var(--shadow);
  }
  .founder .fhead{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:14px;}
  .founder .fhead h3{margin:0;font-size:28px;letter-spacing:-.01em;}
  .founder .fhead .role{
    font-size:13.5px;font-weight:700;color:var(--brand);
    background:#fff1e6;border:1px solid #ffd9bd;border-radius:999px;padding:6px 16px;
  }
  .founder .lead{color:var(--ink-2);font-size:16px;margin:0 0 30px;max-width:900px;}
  .founder .fgroup{
    border-top:1px solid var(--line);padding-top:26px;
    display:grid;grid-template-columns:repeat(3,1fr);gap:30px;
  }
  .founder .fg h4{
    margin:0 0 14px;font-size:14px;font-weight:800;color:var(--brand);letter-spacing:.05em;
  }
  .founder .fg ul{margin:0;padding-left:0;list-style:none;}
  .founder .fg li{
    position:relative;padding-left:18px;margin-bottom:11px;
    color:var(--ink-2);font-size:15px;line-height:1.6;
  }
  .founder .fg li::before{
    content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
  }

  /* ---------- Vision ---------- */
  .vision{
    background:linear-gradient(135deg,#7a2400,#F54300 60%,#FF8A00);
    color:#fff;border-radius:22px;padding:44px 36px;
  }
  .vision h2{color:#fff;}
  .vision .sec-sub{color:rgba(255,255,255,.86);}
  .vision .grid{margin-top:26px;}
  .vision .card{
    background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);
    box-shadow:none;color:#fff;background:rgba(255,255,255,.14);
  }
  @supports ((backdrop-filter:blur(4px)) or (-webkit-backdrop-filter:blur(4px))){
    .vision .card{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);}
  }
  .vision .card h3{color:#fff;}
  .vision .card p{color:rgba(255,255,255,.88);}

  /* ---------- Mission strip ---------- */
  .mission{
    display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:8px;
  }
  .mission .m{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;text-align:center;box-shadow:var(--shadow);}
  .mission .m span{font-size:13px;color:var(--ink-2);letter-spacing:.05em;}
  .mission .m b{display:block;font-size:17px;margin-top:6px;}

  /* ---------- Nav ---------- */
  .nav{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);
  }
  /* backdrop-filter 为渐进增强：支持 blur 的浏览器获得毛玻璃效果，
     微信 X5/XWeb 内核不支持时自动回退到上面的纯色半透明背景。
     注意：必须把带 blur 的声明放在 @supports 内，否则老内核会丢弃整条规则。 */
  @supports ((backdrop-filter:blur(12px)) or (-webkit-backdrop-filter:blur(12px))){
    .nav{
      background:rgba(255,255,255,.92);
      -webkit-backdrop-filter:saturate(180%) blur(12px);
      backdrop-filter:saturate(180%) blur(12px);
    }
  }
  /* 三段式布局：logo 固定 | 菜单自适应收缩 | 电话固定。
     关键：.nav-menu 允许收缩(min-width:0)并自身横向滚动，
     而 logo 与电话按钮 flex:none 永不压缩，保证任何屏宽下电话都可见。 */
  .nav .wrap{display:flex;align-items:center;gap:14px;min-height:60px;}
  .nav .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);text-decoration:none;white-space:nowrap;flex:none;}
  .nav .brand img{height:34px;width:auto;display:block;flex:none;}
  .nav .brand em{font-style:normal;font-size:12px;color:var(--brand);font-weight:700;letter-spacing:.06em;}
  .nav-menu{
    display:flex;gap:2px;margin:0;padding:0;list-style:none;
    flex:1 1 auto;min-width:0;      /* 允许收缩，是溢出的唯一收纳处 */
    overflow-x:auto;scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
    mask-image:linear-gradient(90deg,#000 calc(100% - 18px),transparent 100%);
  }
  .nav-menu::-webkit-scrollbar{display:none;}
  .nav a.item{
    display:block;padding:8px 11px;border-radius:8px;flex:none;
    font-size:14.5px;color:var(--ink-2);text-decoration:none;white-space:nowrap;
    transition:background .18s,color .18s;
  }
  .nav a.item:hover,.nav a.item:focus-visible{background:#fff1e6;color:var(--brand);outline:none;}
  .nav a.cta{
    flex:none;white-space:nowrap;                     /* 电话按钮永不压缩 */
    display:inline-flex;align-items:center;gap:7px;
    padding:9px 16px;border-radius:999px;text-decoration:none;
    background:linear-gradient(135deg,var(--brand),var(--brand-2));
    color:#fff;font-size:14.5px;font-weight:700;
    box-shadow:0 4px 14px rgba(245,67,0,.28);
  }
  .nav a.cta .cta-tag{
    font-size:11px;font-weight:700;letter-spacing:.04em;
    padding:2px 7px;border-radius:999px;
    background:rgba(255,255,255,.26);
  }
  .nav a.cta:hover,.nav a.cta:focus-visible{filter:brightness(1.06);outline:2px solid var(--brand);outline-offset:2px;}

  /* 窄屏：电话按钮只保留号码，隐藏 7×24 小标签给菜单腾空间 */
  @media (max-width:760px){
    .nav .wrap{gap:10px;}
    .nav a.cta{padding:8px 14px;font-size:14px;}
    .nav a.cta .cta-tag{display:none;}
    .nav-menu{mask-image:none;}
    .nav a.item{padding:8px 9px;font-size:14px;}
  }
  /* 超窄屏：logo 缩小，避免挤压电话按钮 */
  @media (max-width:420px){
    .nav .brand img{height:28px;}
    .nav a.cta{padding:8px 12px;font-size:13.5px;}
  }

  /* ---------- Contact ---------- */
  .contact-line{font-size:19px !important;font-weight:700;color:var(--ink) !important;word-break:break-all;}
  .contact-line a{color:var(--brand);text-decoration:none;}
  .contact-line a:hover{text-decoration:underline;}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;max-width:900px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    box-shadow:var(--shadow);overflow:hidden;
  }
  .faq-item summary{
    cursor:pointer;list-style:none;position:relative;
    padding:18px 48px 18px 22px;
    font-size:16.5px;font-weight:700;color:var(--ink);
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary::after{
    content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
    font-size:24px;font-weight:400;color:var(--brand);line-height:1;transition:transform .2s;
  }
  .faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg);}
  .faq-item summary:focus-visible{outline:2px solid var(--brand);outline-offset:-2px;border-radius:14px;}
  .faq-item p{margin:0;padding:0 22px 20px;color:var(--ink-2);font-size:15px;}

  /* ---------- Footer ---------- */

  footer{
    background:#1b1008;color:rgba(255,255,255,.72);padding:38px 0;margin-top:20px;font-size:14px;
  }
  footer .fl{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center;}
  footer strong{color:#fff;}

  @media (max-width:900px){
    .g3,.flow,.mission{grid-template-columns:1fr;}
    .g2{grid-template-columns:1fr;}
    .founder{padding:28px 22px;}
    .founder .fhead h3{font-size:23px;}
    .founder .fgroup{grid-template-columns:1fr;gap:22px;}
    .row{grid-template-columns:1fr;}
    .row>div{border-right:none !important;}
    .row.head{display:none;}
    .row>div:not(:last-child){border-bottom:1px solid var(--line);}
  }
  @media (max-width:560px){
    .hero-metrics{grid-template-columns:repeat(2,1fr);gap:22px;}
    section{padding:48px 0;}
    .vision{padding:32px 22px;border-radius:18px;}
  }

  /* ---------- 多页站通用 ---------- */
  .page-hero{
    background:linear-gradient(135deg,#7a2400 0%,#F54300 55%,#FF8A00 100%);
    color:#fff;padding:52px 0 46px;position:relative;overflow:hidden;
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                     linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
    background-size:44px 44px;opacity:.6;pointer-events:none;
  }
  .page-hero .wrap{position:relative;z-index:1;}
  .page-hero h1{font-size:clamp(24px,3.6vw,36px);margin:0 0 12px;font-weight:800;letter-spacing:-.01em;line-height:1.3;}
  .page-hero p{margin:0;max-width:820px;font-size:clamp(15px,1.8vw,17px);color:rgba(255,255,255,.92);}

  /* 面包屑 */
  .crumb{font-size:13.5px;color:rgba(255,255,255,.82);margin-bottom:14px;}
  .crumb a{color:rgba(255,255,255,.9);text-decoration:none;}
  .crumb a:hover{text-decoration:underline;}
  .crumb span{opacity:.65;margin:0 7px;}

  /* 正文排版（利于长文本被索引） */
  .prose{max-width:920px;}
  .prose h2{font-size:clamp(20px,2.6vw,26px);margin:44px 0 14px;font-weight:800;letter-spacing:-.01em;scroll-margin-top:80px;}
  .prose h3{font-size:18px;margin:30px 0 10px;font-weight:700;color:var(--ink);}
  .prose p{margin:0 0 15px;color:var(--ink-2);font-size:15.5px;line-height:1.85;}
  .prose strong{color:var(--ink);font-weight:700;}
  .prose ul{margin:0 0 18px;padding-left:22px;}
  .prose ul li{margin-bottom:9px;color:var(--ink-2);font-size:15.5px;line-height:1.8;}
  .prose table{width:100%;border-collapse:collapse;margin:0 0 26px;font-size:14.5px;}
  .prose table th,.prose table td{padding:12px 14px;border:1px solid var(--line);text-align:left;}
  .prose table th{background:#fff3ea;font-weight:700;color:var(--ink);}
  .prose table td{color:var(--ink-2);}
  .prose table tr:nth-child(even) td{background:#fffdfb;}

  /* 产品卡 */
  .pcard{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:24px;box-shadow:var(--shadow);margin-bottom:18px;
  }
  .pcard h3{margin:0 0 10px;font-size:18px;display:flex;align-items:center;gap:10px;}
  .pcard .tagline{color:var(--brand);font-size:13.5px;font-weight:700;margin:0 0 10px;}
  .pcard p{margin:0 0 10px;color:var(--ink-2);font-size:15px;}
  .pcard p:last-child{margin-bottom:0;}
  .specs{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:14px;}
  .specs div{background:#fff8f3;border:1px solid #f7e3d4;border-radius:10px;padding:11px 13px;}
  .specs b{display:block;font-size:17px;color:var(--brand);font-weight:800;}
  .specs span{font-size:12.5px;color:var(--ink-2);}

  /* 案例卡 */
  .case{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    padding:22px 24px;box-shadow:var(--shadow);margin-bottom:16px;
    border-left:4px solid var(--brand);
  }
  .case h3{margin:0 0 8px;font-size:17.5px;font-weight:800;}
  .case .meta{font-size:13px;color:var(--ink-2);margin:0 0 10px;}
  .case p{margin:0 0 9px;color:var(--ink-2);font-size:15px;}
  .case p:last-child{margin-bottom:0;}

  /* 页间互链 */
  .linkrow{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin-top:8px;}
  .linkrow a{
    display:block;background:#fff;border:1px solid var(--line);border-radius:12px;
    padding:16px 18px;text-decoration:none;box-shadow:var(--shadow);
    transition:transform .16s,border-color .16s;
  }
  .linkrow a:hover{transform:translateY(-2px);border-color:var(--brand);}
  .linkrow b{display:block;font-size:15px;color:var(--ink);margin-bottom:3px;}
  .linkrow span{font-size:13px;color:var(--ink-2);}

  /* 目录锚 */
  .toc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;margin-bottom:30px;box-shadow:var(--shadow);}
  .toc h4{margin:0 0 10px;font-size:14px;color:var(--brand);font-weight:800;letter-spacing:.05em;}
  .toc ul{margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:8px 18px;}
  .toc a{font-size:14px;color:var(--ink-2);text-decoration:none;}
  .toc a:hover{color:var(--brand);text-decoration:underline;}

  /* 更新日期 */
  .updated{font-size:13px;color:var(--ink-2);margin-top:8px;}