:root{
  --canvas:#FAF8F4;
  --paper:#FFFFFF;
  --ink:#2A2622;
  --ink-2:#4A443E;
  --muted:#736B63;
  --line:rgba(42,38,34,.14);
  --line-soft:rgba(42,38,34,.08);
  --accent:#B8342A;
  --accent-deep:#9E2D24;
  --warm:#F0EBE2;
  --gut:clamp(24px,5vw,80px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --serif:"Instrument Serif","Noto Serif SC","Songti SC",Georgia,serif;
  --sans:"Inter","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--canvas);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  line-break:strict;overflow-wrap:break-word;word-break:normal;
}
/* 不支持 line-break 的浏览器（部分安卓内核）回退：不禁用标点行尾规则 */
@supports not (line-break:strict){
  body{word-break:normal;overflow-wrap:break-word}
}
/* smooth transitions */
a, button, .svc-item, .case{transition:all .25s var(--ease)}

/* back to top */
.back-top{
  position:fixed;bottom:44px;right:32px;z-index:99;
  width:44px;height:44px;border-radius:50%;
  background:var(--ink);color:var(--canvas);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;text-decoration:none;
  opacity:0;pointer-events:none;
  transition:opacity .3s, background .2s;
}
.back-top.show{opacity:1;pointer-events:auto}
.back-top:hover{background:var(--accent)}

/* 手机端底部固定拨号栏：桌面端必须隐藏，否则退化为裸文字链接 */
.mobile-cta-bar{display:none}

/* 桌面端常驻电话按钮：手机端由底部固定栏承担，这里隐藏 */
.call-fab{
  position:fixed;bottom:104px;right:32px;z-index:99;
  display:inline-flex;align-items:center;gap:9px;
  padding:12px 22px 12px 18px;border-radius:999px;
  background:var(--accent);color:#fff;
  font-size:14px;font-weight:600;letter-spacing:.02em;
  box-shadow:0 6px 22px rgba(184,52,42,.28);
  transition:transform .22s var(--ease), box-shadow .22s var(--ease), background .2s;
}
.call-fab:hover{background:#A52B22;transform:translateY(-2px);box-shadow:0 10px 30px rgba(184,52,42,.34)}
.call-fab svg{width:16px;height:16px;flex-shrink:0}
@media(max-width:720px){
  .call-fab{display:none}
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
.wrap{padding-inline:var(--gut)}

/* nav */
header{
  position:sticky;top:0;z-index:100;
  background:rgba(250,248,244,.88);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:20px var(--gut)}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:34px;height:34px;flex:0 0 34px}
.brand-logo img{width:100%;height:100%}
.brand-text{display:flex;flex-direction:column;line-height:1.1;flex:0 0 auto}
/* 中文名四字连排，与下方 NOSCHIP TEC 两端像素对齐（ls 经像素级校准） */
.brand-name{font-family:var(--serif);font-size:24px;font-weight:500;color:var(--ink);letter-spacing:-1px;white-space:nowrap}
.brand-name b{font-weight:600}
/* 英文行字距收口到与中文等宽（原 .18em 比中文短 2.84px） */
.brand-sub{font-size:11px;letter-spacing:2.26px;color:var(--muted);text-transform:uppercase;margin-top:2px}
.menu{display:flex;gap:36px;font-size:14px;color:var(--ink-2)}
.menu a{position:relative;padding:4px 0;transition:color .2s}
.menu a:hover,.menu a.active{color:var(--accent)}
.menu a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--accent)}
.nav-cta{font-size:13px;color:var(--canvas);background:var(--ink);padding:10px 22px;border-radius:999px;letter-spacing:.02em;transition:background .2s}
.nav-cta:hover{background:var(--accent)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;padding:8px;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--ink);transition:.2s}

/* page hero (inner pages) */
.page-hero{
  position:relative;
  padding:clamp(50px,7vh,70px) var(--gut) clamp(36px,5vh,50px);
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(250,248,244,.95) 0%,rgba(250,248,244,.55) 60%,rgba(250,248,244,.3) 100%),url('assets/services-hero.jpg') center/cover no-repeat;
  background-image:linear-gradient(90deg,rgba(250,248,244,.95) 0%,rgba(250,248,244,.55) 60%,rgba(250,248,244,.3) 100%),image-set(url('assets/services-hero-1200w.jpg') 1x, url('assets/services-hero.jpg') 2x);
}
.page-hero-inner{max-width:1280px;margin:0 auto;position:relative;z-index:1}
/* 窄屏改用 1200w 变体，减少手机流量（覆盖内页 inline style 的图） */
@media(max-width:900px){
  .page-hero::before{
    background-image:linear-gradient(90deg,rgba(250,248,244,.95) 0%,rgba(250,248,244,.6) 60%,rgba(250,248,244,.35) 100%),url('assets/cases-banner-1200w.jpg');
    background-position:center;background-size:cover;background-repeat:no-repeat;
  }
}
.eyebrow{font-size:12px;letter-spacing:.28em;color:var(--accent);font-weight:600;text-transform:uppercase;margin-bottom:24px;display:flex;align-items:center;gap:14px}
.eyebrow::before{content:"";width:40px;height:1px;background:var(--accent)}
h1{font-family:var(--serif);font-weight:400;font-size:clamp(36px,5vw,56px);line-height:1.15;letter-spacing:-.01em;color:var(--ink);margin-bottom:24px}
h1 em{font-style:italic;color:var(--accent)}
/* 行宽控制在 30–45 字/行（中文最佳阅读区间），820px 会到 50 字/行 */
.page-lede{font-size:clamp(15px,1.15vw,17px);line-height:1.75;color:var(--ink-2);max-width:720px}

/* sub nav (inner pages) */
.subnav{
  position:sticky;top:74px;z-index:90;
  background:rgba(250,248,244,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  padding:0 var(--gut);
}
.subnav-inner{
  max-width:1280px;margin:0 auto;
  display:flex;gap:8px;overflow-x:auto;
}
.subnav a{
  flex:0 0 auto;padding:14px 16px;font-size:13px;color:var(--ink-2);
  white-space:nowrap;border-bottom:2px solid transparent;
  transition:color .2s,border-color .2s;
}
.subnav a:hover{color:var(--accent)}
.subnav a.active{color:var(--accent);border-bottom-color:var(--accent)}

/* sections */
section{padding:clamp(24px,3vh,40px) 0;scroll-margin-top:140px}
.sec-head{max-width:1280px;margin:0 auto 48px;padding-inline:var(--gut);display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:end}
.sec-eyebrow{font-size:12px;letter-spacing:.28em;color:var(--accent);font-weight:600;margin-bottom:18px}
h2{font-family:var(--serif);font-weight:400;font-size:clamp(30px,3.4vw,48px);line-height:1.15;letter-spacing:-.01em;color:var(--ink)}
h2 em{font-style:italic;color:var(--accent)}
.sec-head p{font-size:16px;line-height:1.75;color:var(--ink-2);max-width:480px}

/* 通用按钮（原只在首页内联有，内页引用后无样式，补进共享表） */
.btn-primary{
  display:inline-block;padding:15px 30px;background:var(--ink);color:var(--canvas);
  font-size:14px;font-weight:500;border-radius:999px;transition:background .2s;
}
.btn-primary:hover{background:var(--accent)}
.btn-ghost{
  display:inline-block;padding:15px 26px;color:var(--ink);font-size:14px;font-weight:500;
  border:1px solid var(--line);border-radius:999px;transition:all .2s;
}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* service detail blocks */
.svc-detail{
  max-width:1280px;margin:0 auto;padding:clamp(40px,6vh,70px) var(--gut);
  border-bottom:1px solid var(--line-soft);
  display:grid;grid-template-columns:280px 1fr;gap:clamp(32px,5vw,72px);
  scroll-margin-top:140px;
}
.svc-detail:last-child{border-bottom:0}
.svc-side .num{font-family:var(--serif);font-size:14px;color:var(--muted);margin-bottom:12px}
.svc-side .num b{color:var(--accent);font-weight:400;font-style:italic}
.svc-side h3,.svc-side h2.svc-title{font-family:var(--serif);font-weight:500;font-size:32px;line-height:1.15;color:var(--ink);margin-bottom:10px}
.svc-side .std{display:inline-block;font-size:11px;letter-spacing:.14em;color:var(--accent);font-weight:600;text-transform:uppercase}
.svc-body{max-width:720px}
.svc-body p{font-size:16px;line-height:1.8;color:var(--ink-2);margin-bottom:20px}
/* 交付物小字：字号更小，行宽同步再收窄，避免一行超过 50 字 */
.svc-body p.svc-note{font-size:14px;color:var(--muted);max-width:620px}
.svc-body h4{font-size:14px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin:28px 0 14px;font-weight:600}
.svc-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 32px}
.svc-list li{font-size:15px;line-height:1.6;color:var(--ink);padding-left:18px;position:relative}
.svc-list li::before{content:"";position:absolute;left:0;top:10px;width:8px;height:1px;background:var(--accent)}

/* featured service - left accent bar on side column */
.svc-featured .svc-side{
  border-left:3px solid var(--accent);
  padding-left:24px;
}
.svc-featured .svc-side h3,.svc-featured .svc-side h2.svc-title{color:var(--ink)}
.svc-featured .svc-side .num{color:var(--muted)}
.svc-featured .svc-body p{color:var(--ink-2)}
.svc-featured .svc-body h4{color:var(--muted)}
.svc-featured .svc-list li{color:var(--ink)}

/* generic two-col */
.two-col{max-width:1280px;margin:0 auto;padding-inline:var(--gut);display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,80px)}
.prose p{font-size:16px;line-height:1.85;color:var(--ink-2);margin-bottom:18px}
.prose p b{color:var(--ink);font-weight:600}

/* timeline */
.timeline{max-width:900px;margin:0 auto;padding-inline:var(--gut)}
.tl-item{display:grid;grid-template-columns:120px 1fr;gap:32px;padding:28px 0;border-bottom:1px solid var(--line-soft)}
.tl-item:last-child{border-bottom:0}
.tl-year{font-family:var(--serif);font-size:28px;color:var(--accent);font-style:italic;line-height:1.2}
.tl-body h5,.tl-body h3.tl-title{font-size:17px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.tl-body p{font-size:14px;color:var(--muted);line-height:1.7}

/* contact */
.contact-grid{max-width:1280px;margin:0 auto;padding-inline:var(--gut);display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(40px,6vw,80px)}
.contact-card{border:1px solid var(--line);padding:36px;background:var(--paper);border-radius:2px}
.contact-card h4,.contact-card h2.contact-h{font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;margin-bottom:18px;font-weight:600}
.contact-card .row{padding:14px 0;border-bottom:1px solid var(--line-soft)}
.contact-card .row:last-child{border-bottom:0}
.contact-card .row b{display:block;font-size:13px;color:var(--muted);font-weight:500;margin-bottom:4px}
.contact-card .row span{font-size:17px;color:var(--ink)}
.contact-card .row span a,.tel-link{
  display:inline-flex;align-items:center;gap:7px;
  color:var(--accent);font-weight:600;
  text-decoration:none;border-bottom:1px solid rgba(184,52,42,.35);
  padding-bottom:1px;transition:border-color .2s,color .2s;
}
.contact-card .row span a::before,.tel-link::before{
  content:"";width:14px;height:14px;flex-shrink:0;
  background:currentColor;
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72c.13.96.36 1.9.7 2.81a2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45c.9.34 1.85.57 2.81.7A2 2 0 0 1 22 16.92z'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M22 16.92v3a2 2 0 0 1-2.18 2 19.79 19.79 0 0 1-8.63-3.07 19.5 19.5 0 0 1-6-6 19.79 19.79 0 0 1-3.07-8.67A2 2 0 0 1 4.11 2h3a2 2 0 0 1 2 1.72c.13.96.36 1.9.7 2.81a2 2 0 0 1-.45 2.11L8.09 9.91a16 16 0 0 0 6 6l1.27-1.27a2 2 0 0 1 2.11-.45c.9.34 1.85.57 2.81.7A2 2 0 0 1 22 16.92z'/%3E%3C/svg%3E") center/contain no-repeat;
}
.contact-card .row span a:hover,.tel-link:hover{border-bottom-color:var(--accent)}

/* 电话优先联系卡 */
.call-card{
  border:1px solid var(--line);background:var(--paper);border-radius:2px;
  padding:clamp(28px,4vw,44px);position:relative;overflow:hidden;
}
.call-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);
}
.call-eyebrow{
  font-size:12px;letter-spacing:.24em;color:var(--accent);font-weight:600;
  text-transform:uppercase;margin-bottom:14px;
}
.call-h{
  font-family:var(--serif);font-weight:400;font-size:clamp(28px,3vw,38px);
  line-height:1.15;color:var(--ink);margin-bottom:14px;
}
.call-desc{font-size:15px;line-height:1.75;color:var(--ink-2);margin-bottom:26px;max-width:460px}
.call-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:100%;max-width:420px;padding:20px 28px;margin-bottom:18px;
  background:var(--accent);color:#fff;border-radius:999px;text-decoration:none;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s;
  box-shadow:0 6px 22px rgba(184,52,42,.22);
}
.call-btn:hover{
  background:#A52B22;transform:translateY(-2px);
  box-shadow:0 10px 28px rgba(184,52,42,.3);
}
.call-btn-label{font-size:19px;font-weight:600;letter-spacing:.02em}
.call-btn-hint{font-size:11.5px;opacity:.82;letter-spacing:.08em}
.call-note{font-size:12.5px;line-height:1.7;color:var(--muted)}

/* 尊重系统「减少动效」偏好 */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important;
  }
  .industry-card:hover img{transform:none}
}

/* 长英文/数字串（如版本号、型号）在窄屏强制断行，避免撑破容器 */
.nb{overflow-wrap:anywhere}

/* cases */
.case-grid{max-width:1280px;margin:0 auto;padding-inline:var(--gut);display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line-soft);border:1px solid var(--line-soft)}
.case{background:var(--canvas);padding:44px 36px}
.case .tag{display:inline-block;font-size:11px;letter-spacing:.14em;color:var(--accent);font-weight:600;text-transform:uppercase;margin-bottom:16px}
.case h3{font-family:var(--serif);font-weight:500;font-size:26px;line-height:1.25;margin-bottom:14px;color:var(--ink)}
.case p{font-size:15px;line-height:1.75;color:var(--ink-2)}
.case .meta{margin-top:20px;padding-top:18px;border-top:1px solid var(--line-soft);display:flex;gap:20px;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.case .meta b{color:var(--ink);font-weight:600}

/* cta band */
.cta-band{background:var(--accent);color:var(--canvas);padding:clamp(60px,9vh,90px) var(--gut);text-align:center}
.cta-band h2{color:var(--canvas);margin-bottom:16px}
.cta-band h2 em{color:#fff}
.cta-band p{font-size:17px;opacity:.9;margin-bottom:36px;max-width:560px;margin-inline:auto}
.cta-band .btn-light{display:inline-block;padding:16px 36px;background:var(--canvas);color:var(--accent);font-size:14px;font-weight:600;border-radius:999px;letter-spacing:.02em}

/* footer */
footer{background:var(--ink);color:rgba(250,248,244,.75);padding:16px var(--gut) 10px;padding-bottom:56px}
.foot-grid{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.foot-brand .brand-name{color:var(--canvas)}
.foot-brand p{font-size:13px;line-height:1.7;margin-top:10px;max-width:300px}
footer h6,footer .foot-col-title{font-size:12px;letter-spacing:.16em;color:rgba(250,248,244,.5);text-transform:uppercase;margin-bottom:8px;font-weight:600}
footer ul{list-style:none;padding:0}
footer li{font-size:14px;margin-bottom:4px;line-height:1.6}
footer li b{color:var(--canvas);font-weight:500}
footer li a{color:rgba(250,248,244,.75);text-decoration:none}
footer li a:hover{color:var(--canvas)}
.foot-bottom{max-width:1280px;margin:16px auto 0;padding-top:12px;border-top:1px solid rgba(250,248,244,.12);display:flex;justify-content:space-between;font-size:12px;color:rgba(250,248,244,.62);flex-wrap:wrap;gap:12px;padding-inline:var(--gut)}

@media(max-width:720px){
  .menu{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--canvas);flex-direction:column;gap:0;padding:12px var(--gut) 24px;
    border-bottom:1px solid var(--line-soft);
  }
  .menu.open{display:flex}
  .menu a{padding:14px 0;border-bottom:1px solid var(--line-soft);font-size:16px}
  .menu a.active::after{display:none}
  .nav-toggle{display:flex}
  .svc-detail{grid-template-columns:1fr;gap:24px}

  .two-col{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr 1fr}
  .sec-head{grid-template-columns:1fr;gap:20px}
  .svc-list{grid-template-columns:1fr}
  .tl-item{grid-template-columns:80px 1fr;gap:20px}
  .call-btn{max-width:100%}
  /* 手机版大字缩小 */
  h1{font-size:32px!important}
  h2{font-size:24px!important}
  .page-hero h1{font-size:30px!important}
  .page-hero p{font-size:14px!important}
  .svc-detail h3,.svc-detail h2.svc-title{font-size:20px!important}
  .svc-detail p{font-size:14px!important}
  .two-col h3{font-size:20px!important}
  .two-col p{font-size:14px!important}
  .contact-info h3{font-size:20px}
  .contact-info p{font-size:14px}
  /* 手机版区块间距缩小 */
  section{padding-block:20px!important}
  .page-hero{padding-block:40px!important}
  .svc-detail{padding-block:16px!important;gap:16px!important}
  .two-col{padding-block:24px!important}
  .contact-section{padding-block:24px!important}
  /* services页产品引导条手机版紧凑 */
  .product-cta{padding-block:20px!important}
  .product-cta h3{font-size:20px!important}
  .product-cta p{font-size:13px!important}
  /* subnav 手机版4个tab均分 */
  .subnav{top:80px;padding:0 12px;overflow:visible}
  .subnav-inner{overflow-x:visible;gap:0;align-items:stretch}
  .subnav a{flex:1;padding:12px 4px 14px;font-size:12px;text-align:center;white-space:normal;line-height:1.4;border-bottom-width:2px}
}
@media(max-width:720px){
  /* 给固定底栏留出安全区，避免遮挡页脚与正文 */
  body{padding-bottom:72px}
  .mobile-cta-bar{
    display:flex;position:fixed;bottom:0;left:0;right:0;z-index:100;
    padding:8px 12px calc(8px + env(safe-area-inset-bottom));
    background:rgba(250,248,244,.95);backdrop-filter:blur(10px);
    border-top:1px solid var(--line-soft);
    align-items:center;justify-content:center;
  }
  .mobile-cta-bar span{
    display:inline-flex;align-items:center;gap:8px;
    background:var(--ink);color:var(--canvas);
    padding:14px 32px;border-radius:12px;font-size:15px;font-weight:500;
    box-shadow:0 4px 16px rgba(42,38,34,.15);
    width:100%;justify-content:center;
  }
  /* 返回顶部按钮左移，避开底栏 */
  .back-top{bottom:84px;right:20px;width:44px;height:44px}

  /* ---- 触摸目标补到 44px（Apple HIG 底线）---- */
  /* 汉堡菜单：原 32px（8px padding + 16px 图标） */
  .nav-toggle{padding:14px;margin-right:-6px}
  /* 顶栏品牌名不换行（窄屏原会断成「诺顺科 / 技」）*/
  .brand-name{white-space:nowrap}
  /* 页脚链接：原 20px / 备案链接 15px。撑高后把 li 间距归零，总高不变 */
  footer li{margin-bottom:0}
  footer li a{display:inline-flex;align-items:center;min-height:44px}
  .foot-bottom a{display:inline-flex;align-items:center;min-height:44px}
  /* 「查看详细服务 / 了解详情」类文字链：原 23–26px */
  .svc-more,.prod-more{display:inline-flex;align-items:center;min-height:44px}
  .svc-more{justify-content:center}
  .prod-more{margin-top:8px}
  /* 顶栏 logo（40px）与「电话咨询」胶囊（41px）*/
  .brand{min-height:44px}
  .nav-cta{display:inline-flex;align-items:center;min-height:44px}
  /* 电话链接（原 30px）与通用按钮 */
  .tel-link{display:inline-flex;align-items:center;min-height:44px}
  .btn-primary,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;min-height:44px}
}
@media(max-width:480px){
  .foot-grid{grid-template-columns:1fr;gap:16px}
}