/* ============================================================
   北京亿创弘盛科技有限公司 · 官网全站样式
   由 _build_shared.py 从 index.html 抽取；所有页面共用这一份。
   设计基准：1440px 画布 / 120px 安全边距 / 1200px 内容宽
   ============================================================ */

/* ============================================================
   北京亿创弘盛科技有限公司 · 官网
   设计基准：1440px 画布 / 120px 安全边距 / 1200px 内容宽
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  /* 品牌色板（取自设计稿） */
  --navy:        #0A2039;   /* 主深青蓝 */
  --navy-deep:   #061626;   /* 页脚更深底 */
  --navy-mid:    #0E2C4C;   /* 首屏渐变终点 */
  --navy-cta:    #123558;   /* CTA 渐变终点 */
  --cyan:        #35D0FF;   /* 品牌亮青 */
  --cyan-deep:   #1E5B8E;   /* 浅底上的青蓝文字 */
  --light:       #F2F7FB;   /* 浅色区块底 */
  --white:       #FFFFFF;

  /* 文字色 */
  --t-on-dark:        #9FB3C8;
  --t-on-dark-soft:   #C6D4E3;
  --t-head-dark:      #FFFFFF;
  --t-on-light:       #5A7086;
  --t-head-light:     #0A2039;
  --t-footer:         #6E8299;
  --t-footer-copy:    #4A5D73;

  /* 描边 / 分隔 */
  --line-dark:  rgba(255,255,255,.10);
  --line-card:  rgba(255,255,255,.88);
  --line-light: #E2EAF2;

  /* 字体：拉丁字形优先（对齐参考站的 Inter / Segoe UI 字体栈），中文回落到系统黑体。
     全部使用系统已装字体，不依赖任何联网字体，离线打开、国内访问都不掉样式。 */
  --font-cjk: "Inter","Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,
              "PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Source Han Sans CN",
              "Microsoft YaHei","微软雅黑",sans-serif;
  --font-mono: "JetBrains Mono",Consolas,"SF Mono",Menlo,monospace;

  /* 标题渐变：白 + 蓝双色标题里「蓝色」那一段 */
  --grad-title: linear-gradient(93deg,#2E93D9 0%,#35D0FF 46%,#86E9FF 100%);

  /* 字号：流体缩放。1440 画布下取设计基准值，视口变化时平滑过渡、无跳变。
     大标题对齐参考站的 48→72 档位，字距收紧到 -.025em 提升精致度。 */
  --fs-h1:   clamp(33px, 4.65vw, 68px);    /* 首屏主标题 */
  --fs-h2:   clamp(23px, 2.62vw, 38px);    /* 区块标题 */
  --fs-h3:   clamp(18px, 1.60vw, 23px);    /* 卡片标题 */
  --fs-lead: clamp(15.5px, 1.30vw, 19px);  /* 导语 / 副标题 */
  --fs-body: clamp(15px, 1.11vw, 16px);    /* 正文 */
  --fs-sm:   14px;
  --fs-xs:   13px;
  --fs-2xs:  12px;
  --fs-mono: 11px;

  /* 节奏 */
  --sec-pad:     88px;
  --gap:         24px;
  --radius:      14px;
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--navy);
  color:var(--t-on-dark);
  font-family:var(--font-cjk);
  font-size:var(--fs-body);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;   /* 兜底 */
  overflow-x:clip;     /* 不产生滚动容器，保证吸顶导航正常 */
}
h1,h2,h3,h4,p,figure{margin:0}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto}
ul{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}

.mono{
  font-family:var(--font-mono);
  letter-spacing:.06em;
  text-transform:uppercase;
}

/* ---------- 3. 布局工具 ---------- */
.wrap{
  width:100%;
  max-width:1440px;
  margin:0 auto;
  padding:0 120px;
}
section{scroll-margin-top:76px}

/* 区块标题组 */
.sec-head{display:flex;align-items:center;gap:12px}
.sec-bar{flex:none;width:4px;height:clamp(20px,2.05vw,30px);background:var(--cyan);border-radius:2px}
.sec-title{font-size:var(--fs-h2);font-weight:700;line-height:1.28;letter-spacing:-.02em}
.sec-mono{font-size:var(--fs-mono);color:var(--cyan-deep)}

/* 深浅两种区块基调 */
.on-light .sec-title{color:var(--t-head-light)}
.on-light .sec-mono{color:var(--cyan-deep)}
.on-dark .sec-title{color:var(--t-head-dark)}
.on-dark .sec-mono{color:var(--cyan)}

.sec-sub{font-size:var(--fs-body);line-height:1.75}
.on-light .sec-sub{color:var(--t-on-light)}
.on-dark .sec-sub{color:var(--t-on-dark)}

/* 数字序号 */
.num{font-family:var(--font-mono);font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:0;line-height:1.3}

/* ---------- 4. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;font-weight:600;
  padding:14px 30px;border-radius:8px;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--cyan);color:var(--navy);
  box-shadow:0 4px 20px rgba(53,208,255,.25);
}
.btn-primary:hover{background:#5BDBFF;box-shadow:0 8px 28px rgba(53,208,255,.42);transform:translateY(-2px)}
.btn-ghost{
  background:rgba(255,255,255,.05);color:#fff;
  border:1px solid rgba(255,255,255,.9);
  font-weight:500;
}
.btn-ghost:hover{background:rgba(255,255,255,.14);transform:translateY(-2px)}

/* ---------- 5. 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  transition:background-color .25s ease,box-shadow .25s ease,border-color .25s ease;
  border-bottom:1px solid transparent;
}
.site-header.scrolled{
  background:rgba(10,32,57,.92);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line-dark);
  box-shadow:0 8px 30px rgba(0,0,0,.28);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;padding-top:22px;padding-bottom:22px;
}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand-mark{flex:none;color:var(--cyan)}
.brand-text{display:flex;align-items:center}
.brand-name{font-size:21px;font-weight:700;color:#fff;line-height:1.2;letter-spacing:-.01em}

.nav{display:flex;align-items:center;gap:40px}
.nav a{
  font-size:16px;color:var(--t-on-dark-soft);
  transition:color .18s ease;position:relative;
}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-6px;height:2px;
  background:var(--cyan);border-radius:2px;transition:right .22s ease;
}
.nav a:hover{color:#fff}
.nav a:hover::after{right:0}

.header-cta{
  flex:none;background:var(--cyan);color:var(--navy);
  font-size:14px;font-weight:600;padding:11px 24px;border-radius:6px;
  transition:background-color .18s ease,transform .18s ease;
}
.header-cta:hover{background:#5BDBFF;transform:translateY(-1px)}

/* 移动端菜单按钮 */
.nav-toggle{
  display:none;flex:none;width:40px;height:40px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border-radius:8px;border:1px solid var(--line-card);
}
.nav-toggle span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .22s ease,opacity .22s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 6. 首屏 ---------- */
.hero{
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-mid) 100%);
  padding-top:88px;padding-bottom:72px;
}
.hero-inner{display:flex;flex-direction:column;gap:56px}

.hero-main{
  display:flex;align-items:center;gap:64px;
}
.hero-text{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;gap:26px}

.hero-title{display:flex;flex-direction:column;gap:clamp(2px,0.6vw,8px)}
.hero-title span{
  display:block;font-size:var(--fs-h1);font-weight:700;
  line-height:1.2;letter-spacing:-.025em;
}
.h1-a{color:#fff}
/* 第二行做「蓝 → 青」渐变文字，形成参考站那种白 + 蓝的双色标题 */
.h1-b{color:var(--cyan)}
@supports ((-webkit-background-clip:text) or (background-clip:text)){
  .h1-b{
    background-image:var(--grad-title);
    -webkit-background-clip:text;background-clip:text;
    color:transparent;-webkit-text-fill-color:transparent;
  }
}

.hero-sub{font-size:var(--fs-lead);line-height:1.72;color:var(--t-on-dark-soft);max-width:616px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:16px}

.hero-visual{
  position:relative;
  flex:0 0 520px;width:520px;height:380px;
  border-radius:16px;overflow:hidden;
  border:1px solid var(--line-card);
  box-shadow:0 16px 40px rgba(0,0,0,.35);
}
/* 轮播：三张场景图淡入淡出切换 */
.hero-visual .slide{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:0;transition:opacity .6s ease;
}
.hero-visual .slide.is-active{opacity:1}
/* 底部渐变遮罩，保证缩略图条在浅色图上也可读 */
.hero-visual::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:96px;
  background:linear-gradient(180deg,rgba(6,18,32,0) 0%,rgba(6,18,32,.78) 100%);
  pointer-events:none;
}
.hero-nav{
  position:absolute;left:12px;right:12px;bottom:12px;z-index:2;
  display:flex;align-items:center;gap:8px;
}
.hero-thumb{
  flex:none;width:62px;height:39px;padding:0;border-radius:6px;overflow:hidden;
  border:1.5px solid rgba(255,255,255,.35);cursor:pointer;
  opacity:.55;transition:opacity .25s ease,border-color .25s ease,transform .25s ease;
  background:rgba(6,18,32,.4);
}
.hero-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.hero-thumb:hover{opacity:.9;transform:translateY(-2px)}
.hero-thumb.is-active{opacity:1;border-color:var(--cyan)}
.hero-thumb:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.hero-counter{
  margin-left:auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:#fff;background:rgba(6,18,32,.55);
  padding:4px 10px;border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
}
@media (prefers-reduced-motion:reduce){
  .hero-visual .slide,.hero-thumb{transition:none}
}

/* 首屏数据条 */
.hero-stats{
  display:flex;justify-content:space-between;gap:24px;
  border-top:1px solid var(--line-dark);
  padding-top:28px;
}
.stat{display:flex;flex-direction:column;gap:8px}
.stat-num{font-size:clamp(28px,2.78vw,40px);font-weight:700;line-height:1.15;color:#fff;letter-spacing:-.01em}
.stat-num.accent{font-family:var(--font-mono);color:var(--cyan)}
.stat-label{font-size:var(--fs-sm);color:var(--t-on-dark)}

/* ---------- 7. 关于我们（浅） ---------- */
.sec{ padding-top:var(--sec-pad);padding-bottom:var(--sec-pad) }
.sec-light{background:var(--light)}
.sec-dark{background:var(--navy)}
.sec-white{background:#fff}
.sec-inner{display:flex;flex-direction:column;gap:44px}
.gap-48{gap:48px}
.gap-36{gap:36px}

.about-lead{font-size:var(--fs-lead);line-height:1.75;color:var(--t-on-light);width:100%}

.grid{display:grid;gap:var(--gap)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-5{grid-template-columns:repeat(5,1fr)}
.g-6{grid-template-columns:repeat(6,1fr)}

/* 浅底白卡 */
.card{
  background:#fff;border-radius:var(--radius);
  box-shadow:0 8px 24px rgba(10,32,57,.06);
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(10,32,57,.12)}

.card-about{padding:32px;gap:16px}
.card-title{font-size:var(--fs-h3);font-weight:700;color:var(--t-head-light);line-height:1.38;letter-spacing:-.01em}
.card-desc{font-size:var(--fs-sm);line-height:26px;color:var(--t-on-light)}

/* 场景卡（上图下文） */
.card-scene{padding:0;gap:0;overflow:hidden}
.scene-img{aspect-ratio:600/319;min-height:150px;overflow:hidden;flex:none;background:#0d2946}
.scene-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card-scene:hover .scene-img img{transform:scale(1.06)}
.scene-body{display:flex;flex-direction:column;gap:10px;padding:20px 22px 24px}
.scene-label{font-size:11px;font-weight:600;color:var(--cyan-deep)}
.scene-pain{font-size:var(--fs-xs);line-height:22px;color:var(--t-on-light)}
.scene-comp{font-size:var(--fs-xs);font-weight:500;line-height:22px;color:var(--t-head-light)}

/* ---------- 8. 产品体系（深） ---------- */
.card-prod{
  background:rgba(255,255,255,.039);
  border:1px solid var(--line-card);
  border-radius:var(--radius);overflow:hidden;gap:0;
}
.card-prod:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,0,0,.34)}
.prod-img{height:150px;overflow:hidden;flex:none;background:#0d2946}
.prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card-prod:hover .prod-img img{transform:scale(1.06)}
.prod-body{display:flex;flex-direction:column;gap:12px;padding:22px 22px 24px}
.prod-head{display:flex;align-items:center;gap:10px}
.prod-title{font-size:clamp(17px,1.38vw,20px);font-weight:700;color:#fff;line-height:1.35;letter-spacing:-.01em}
.prod-desc{font-size:var(--fs-2xs);color:var(--t-on-dark)}
.prod-list{display:flex;flex-direction:column;gap:12px;font-size:var(--fs-2xs);color:var(--t-on-dark-soft)}
.tag{
  align-self:flex-start;margin-top:2px;
  padding:6px 12px;border-radius:4px;
  background:rgba(53,208,255,.078);
  border:1px solid var(--cyan);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;
  color:var(--cyan);
}

/* ---------- 9. 交付链路（深） ---------- */
.card-step{
  padding:26px;gap:12px;
  background:rgba(255,255,255,.039);
  border:1px solid var(--line-card);
  border-radius:var(--radius);
}
.card-step:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,0,0,.34)}
.step-num{font-family:var(--font-mono);font-size:22px;font-weight:700;color:var(--cyan);line-height:1.2}
.step-title{font-size:clamp(16px,1.2vw,18px);font-weight:700;color:#fff;line-height:1.35}
.step-desc{font-size:var(--fs-xs);line-height:22px;color:var(--t-on-dark)}

.card-dlvstat{
  padding:24px 28px;gap:8px;
  background:rgba(53,208,255,.07);
  border:1px solid var(--cyan);
  border-radius:var(--radius);
}
.card-dlvstat:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(53,208,255,.14)}
.dlvstat-num{font-size:clamp(24px,2.08vw,30px);font-weight:700;color:#fff;line-height:1.2}
.dlvstat-num.accent{font-family:var(--font-mono);color:var(--cyan)}
.dlvstat-label{font-size:var(--fs-xs);color:var(--t-on-dark-soft)}

/* ---------- 10. 品牌与客户（白） ---------- */
.label-note{font-size:var(--fs-sm);font-weight:600;color:var(--cyan-deep)}
.logo-card{
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-light);border-radius:10px;
  aspect-ratio:480/180;
  padding:0;overflow:hidden;background:#fff;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.logo-card:hover{border-color:#BFD6E8;box-shadow:0 8px 22px rgba(10,32,57,.09);transform:translateY(-2px)}
.logo-card img{max-width:100%;max-height:100%;object-fit:contain}
.logo-grid{gap:20px}
.logo-center{display:flex;flex-wrap:wrap;justify-content:center}
.logo-center .logo-card{width:calc((100% - 100px)/6)}
.client-note{font-size:var(--fs-sm);color:var(--t-on-light)}

/* ---------- 11. 行动号召（深渐变 + 联系方式） ---------- */
.cta{
  background:linear-gradient(180deg,var(--navy) 0%,var(--navy-cta) 100%);
  padding-top:96px;padding-bottom:96px;
}
.cta-grid{display:flex;align-items:center;justify-content:space-between;gap:72px}
.cta-left{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;align-items:flex-start;gap:22px;text-align:left}
.cta-wave{display:flex;align-items:flex-end;gap:6px;height:24px}
.cta-wave i{display:block;width:4px;background:var(--cyan);border-radius:2px}
.cta-title{font-size:clamp(26px,3.2vw,46px);font-weight:700;color:#fff;line-height:1.24;letter-spacing:-.022em}
.cta-sub{font-size:var(--fs-lead);color:var(--t-on-dark);max-width:560px}
.cta-phone{
  display:inline-flex;align-items:center;gap:14px;
  font-family:var(--font-mono);font-size:clamp(24px,2.5vw,36px);font-weight:700;
  color:var(--cyan);letter-spacing:.02em;line-height:1.1;
  transition:color .18s ease,transform .18s ease;
}
.cta-phone svg{flex:none}
.cta-phone:hover{color:#fff;transform:translateY(-2px)}
.cta-phone-note{font-size:var(--fs-xs);color:var(--t-on-dark);letter-spacing:.02em}
.cta-addr{display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--t-on-dark);letter-spacing:.02em}
.cta-addr svg{flex:none;margin-top:3px;color:var(--cyan)}
.cta-addr span{line-height:1.6}

/* ---------- 预约表单 · 弹出层 ---------- */
.booking-modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px;
  background:rgba(4,15,27,.64);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s}
.booking-modal.is-open{opacity:1;visibility:visible}
.booking-card{position:relative;width:min(560px,100%);max-height:calc(100vh - 48px);overflow-y:auto;
  background:var(--white);border-radius:22px;padding:clamp(26px,3vw,40px);
  box-shadow:0 32px 80px rgba(3,14,26,.45);transform:translateY(16px) scale(.97);
  transition:transform .22s ease}
.booking-modal.is-open .booking-card{transform:none}
.bk-close{position:absolute;top:12px;right:12px;width:36px;height:36px;display:flex;align-items:center;justify-content:center;
  border:none;background:transparent;border-radius:50%;color:#7E93A8;cursor:pointer;
  transition:background .15s,color .15s}
.bk-close:hover{background:#F0F5FA;color:var(--t-head-light)}
.bk-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px;padding-right:40px}
.bk-title{font-size:clamp(19px,1.6vw,24px);font-weight:700;color:var(--t-head-light);letter-spacing:-.01em}
.bk-head-note{font-size:var(--fs-xs);color:var(--t-on-light);letter-spacing:.02em}
.bk-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.bk-field{display:flex;flex-direction:column;gap:7px}
.bk-field.full{grid-column:1 / -1}
.bk-label{font-size:var(--fs-xs);font-weight:600;color:var(--t-head-light);letter-spacing:.02em}
.bk-label em{font-style:normal;color:#E0483E;margin-left:2px}
.bk-input{width:100%;box-sizing:border-box;font:inherit;font-size:var(--fs-body);color:var(--t-head-light);
  background:#F7FAFD;border:1px solid var(--line-light);border-radius:10px;padding:12px 14px;outline:none;
  transition:border-color .18s,box-shadow .18s}
.bk-input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(53,208,255,.18);background:#fff}
.bk-input::placeholder{color:#9FB0C2}
textarea.bk-input{resize:vertical;min-height:96px}
select.bk-input{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#7E93A8 50%),linear-gradient(135deg,#7E93A8 50%,transparent 50%);
  background-position:calc(100% - 20px) 50%,calc(100% - 14px) 50%;background-size:6px 6px;background-repeat:no-repeat}
.bk-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px}
.bk-actions .btn{min-width:180px}
.bk-msg{font-size:var(--fs-sm);letter-spacing:.02em}
.bk-msg.err{color:#E0483E}
.bk-msg.ok{color:#1F9D55}
.bk-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.bk-success{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:8px 0}
.bk-success svg{color:#1F9D55}
.bk-success h3{margin:0;font-size:20px;font-weight:700;color:var(--t-head-light)}
.bk-success p{margin:0;font-size:var(--fs-body);color:var(--t-on-light);line-height:1.7}
.bk-success a{color:var(--cyan-deep);font-weight:600;text-decoration:none}
.bk-success a:hover{text-decoration:underline}
@media (max-width:680px){
  .bk-grid{grid-template-columns:1fr}
  .booking-modal{padding:14px}
  .booking-card{max-height:calc(100vh - 28px)}
}

/* 微信二维码卡 */
.qr-card{
  flex:none;width:224px;
  background:#fff;border-radius:16px;
  padding:16px 16px 14px;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  box-shadow:0 16px 44px rgba(0,0,0,.38);
}
.qr-card img{width:100%;height:auto;border-radius:8px}
.qr-title{font-size:15px;font-weight:700;color:var(--t-head-light)}
.qr-sub{font-size:var(--fs-xs);color:var(--t-on-light);text-align:center}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  background:var(--navy-deep);
  padding-top:48px;padding-bottom:32px;
}
.footer-inner{display:flex;flex-direction:column;gap:24px}
.foot-top{display:flex;justify-content:space-between;gap:48px}
.foot-brand{flex:0 0 420px;max-width:420px;display:flex;flex-direction:column;gap:12px}
.foot-logo-row{display:flex;align-items:center;gap:10px}
.foot-logo-row svg{flex:none;color:var(--cyan)}
.foot-name{font-size:15px;font-weight:700;color:#fff}
.foot-desc{font-size:var(--fs-2xs);line-height:20px;color:var(--t-footer)}
.foot-links{display:flex;gap:48px;flex-wrap:wrap}
.foot-col{display:flex;flex-direction:column;gap:12px}
.foot-col h4{font-size:var(--fs-2xs);font-weight:600;color:var(--t-on-dark-soft)}
.foot-col a{font-size:var(--fs-2xs);color:var(--t-footer);transition:color .18s ease}
.foot-col a:hover{color:var(--cyan)}
.foot-qr{
  width:88px;height:auto;display:block;margin-top:2px;
  border-radius:10px;
  box-shadow:0 0 0 1px rgba(255,255,255,.12),0 8px 22px rgba(0,0,0,.30);
}
.foot-divider{height:1px;background:rgba(255,255,255,.078)}
.foot-copy{font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.06em;color:var(--t-footer-copy)}
/* ICP 备案号：法定须公示，链接指向工信部备案管理系统 */
.foot-icp{margin-top:6px;font-family:var(--font-mono);font-size:var(--fs-mono);letter-spacing:.06em}
.foot-icp a{color:var(--t-footer-copy);text-decoration:none;border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.foot-icp a:hover{color:#fff;border-bottom-color:rgba(255,255,255,.35)}

/* ---------- 13. 滚动入场 ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s cubic-bezier(.22,.61,.36,1),transform .7s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1280px){
  .wrap{padding:0 64px}
  .g-5{grid-template-columns:repeat(4,1fr)}
}
@media (max-width:1100px){
  :root{--sec-pad:72px}
  .wrap{padding:0 40px}
  .hero-main{gap:40px}
  .nav{gap:28px}
  .header-inner{gap:16px}
  .hero-visual{flex:0 0 400px;width:400px;height:292px}
  .g-4{grid-template-columns:repeat(2,1fr)}
  .logo-grid{grid-template-columns:repeat(4,1fr)}
  .logo-center .logo-card{width:calc((100% - 60px)/4)}
  .g-6{grid-template-columns:repeat(3,1fr)}
  .foot-brand{flex:0 0 340px;max-width:340px}
  .cta-grid{gap:44px}
  .qr-card{width:188px}
}
@media (max-width:900px){
  .nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex}
  .site-header.menu-open{background:rgba(10,32,57,.98);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom-color:var(--line-dark)}
  .nav.is-open{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;left:0;right:0;top:100%;
    background:rgba(10,32,57,.98);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line-dark);
    padding:8px 40px 24px;
  }
  .nav.is-open a{padding:14px 0;font-size:17px;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav.is-open a::after{display:none}
  .g-3{grid-template-columns:repeat(2,1fr)}
  .hero-main{flex-direction:column;align-items:stretch;gap:40px}
  .hero-visual{flex:none;width:100%;height:0;padding-bottom:56%;position:relative}
  .hero-visual .slide{position:absolute;inset:0;width:100%;height:100%}
  .hero-thumb{width:53px;height:34px}
  .hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 24px}
  .cta-grid{flex-direction:column;align-items:flex-start;gap:44px}
  .qr-card{align-self:center;width:min(264px,100%)}
  .foot-top{flex-direction:column;gap:36px}
  .foot-brand{flex:none;max-width:none;width:100%}
}
@media (max-width:680px){
  :root{--sec-pad:56px;--gap:16px;--radius:12px}
  .wrap{padding:0 22px}
  .header-inner{padding-top:16px;padding-bottom:16px}
  .nav.is-open{padding-left:22px;padding-right:22px}
  .hero{padding-top:56px;padding-bottom:56px}
  .hero-inner{gap:40px}
  .hero-ctas .btn{flex:1 1 auto;padding:13px 20px}
  .g-3,.g-4{grid-template-columns:1fr}
  .g-5,.g-6{grid-template-columns:repeat(2,1fr)}
  .logo-grid{grid-template-columns:repeat(2,1fr)}
  .logo-center .logo-card{width:calc((100% - 20px)/2)}
  .prod-body{padding:20px}
  .card-about,.card-step{padding:22px}
  .card-dlvstat{padding:20px 22px}
  .cta{padding-top:64px;padding-bottom:64px}
  .cta-phone{gap:10px}
  .cta-phone svg{width:22px;height:22px}
  .qr-card{padding:18px 18px 16px}
  .foot-links{gap:32px}
}
@media (max-width:420px){
  .foot-links{gap:24px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
@media print{
  .site-header,.nav-toggle{display:none}
  .reveal{opacity:1;transform:none}
}

/* ============================================================
   子页体系样式：卡片整块可点 + 内链提示（首页 → 子页）
   由 _build_shared.py 追加，保证重新抽取样式时不丢。
   ============================================================ */

/* 卡片整块可点：覆盖一层透明链接，不改动原有排版 */
.card-prod,.card-scene{position:relative}
.card-hit{position:absolute;inset:0;z-index:3;border-radius:inherit;overflow:hidden;text-indent:-9999px}
.card-prod:focus-within,.card-scene:focus-within{outline:2px solid var(--cyan);outline-offset:3px}

/* 卡片底部「查看详情 →」提示 */
.card-more{
  align-self:flex-start;display:inline-flex;align-items:center;gap:6px;
  font-size:var(--fs-2xs);font-weight:600;letter-spacing:.02em;
}
.card-more::after{content:"\2192";display:inline-block;font-weight:400;transition:transform .25s ease}
.card-prod .card-more{color:var(--cyan);margin-top:2px}
.card-scene .card-more{color:var(--cyan-deep);margin-top:auto;padding-top:4px}
.card-prod:hover .card-more::after,.card-scene:hover .card-more::after{transform:translateX(4px)}

/* 子页内相关推荐卡片：整块可点 */
.rel-grid .rel-card{position:relative}