/* ==========================================================================
   合肥楚徽文化科技有限公司 · 门户站点样式表
   Chuviai Culture & Technology — Corporate Portal Stylesheet
   --------------------------------------------------------------------------
   结构：
     01 设计令牌 (Design Tokens)
     02 基础重置与排版
     03 布局容器与栅格
     04 按钮与标签
     05 页头 / 导航
     06 页脚
     07 首页 Hero 与区块
     08 卡片与列表组件
     09 内页通用组件
     10 表单
     11 动效与滚动进场
     12 响应式
   ========================================================================== */

/* --------------------------------------------------------------------------
   01 设计令牌
   -------------------------------------------------------------------------- */
:root {
  /* 品牌色：取自"楚徽"——青蓝为科技，金为徽文化 */
  --brand:        #2F6BFF;
  --brand-deep:   #1B4FD8;
  --brand-violet: #7C5CFF;
  --brand-cyan:   #22D3EE;
  --accent:       #C99A3F;   /* 徽文化·鎏金 */

  /* 中性色 */
  --ink:      #0A1224;
  --ink-2:    #121E38;
  --ink-3:    #1D2C4C;
  --text:     #16203A;
  --body:     #43536E;
  --muted:    #74839C;
  --line:     #E5EAF3;
  --line-2:   #EFF3FA;
  --bg:       #FFFFFF;
  --bg-soft:  #F6F8FD;
  --bg-deep:  #0A1224;

  /* 功能色 */
  --ok:    #16A34A;
  --warn:  #D97706;

  /* 渐变 */
  --grad-brand: linear-gradient(120deg, #2F6BFF 0%, #7C5CFF 52%, #22D3EE 100%);
  --grad-soft:  linear-gradient(140deg, #EAF0FF 0%, #F4F0FF 50%, #E8FBFF 100%);

  /* 阴影 */
  --sh-sm: 0 1px 2px rgba(16, 32, 64, .04), 0 2px 8px rgba(16, 32, 64, .04);
  --sh-md: 0 4px 12px rgba(16, 32, 64, .06), 0 12px 32px rgba(16, 32, 64, .06);
  --sh-lg: 0 12px 32px rgba(16, 32, 64, .10), 0 32px 64px rgba(16, 32, 64, .08);
  --sh-brand: 0 8px 24px rgba(47, 107, 255, .28);

  /* 圆角 */
  --r-xs: 6px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-pill: 999px;

  /* 排版 */
  --font: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Hiragino Sans GB",
          "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont,
          "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  /* 版心 */
  --wrap: 1200px;
  --wrap-narrow: 860px;
  --header-h: 72px;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* --------------------------------------------------------------------------
   02 基础重置与排版
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  margin: 0 0 .5em;
  color: var(--text);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
}
h1 { font-size: clamp(2rem, 4.4vw, 3.25rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.125rem); }
h3 { font-size: clamp(1.125rem, 1.8vw, 1.375rem); }
h4 { font-size: 1.0625rem; }

p { margin: 0 0 1em; }
a { color: var(--brand); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--brand-deep); }
img { max-width: 100%; height: auto; display: block; }
picture { display: block; }
ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
li { margin-bottom: .4em; }
strong { color: var(--text); font-weight: 600; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

code, kbd, samp {
  font-family: var(--mono);
  font-size: .875em;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-xs);
  padding: .1em .4em;
}

::selection { background: rgba(47, 107, 255, .16); }

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 跳转到主内容（无障碍） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  background: var(--brand);
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 var(--r-sm) 0;
}
.skip-link:focus { left: 0; color: #fff; }

/* --------------------------------------------------------------------------
   03 布局容器与栅格
   -------------------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: var(--wrap-narrow); }

.section { padding: clamp(56px, 7vw, 104px) 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: clamp(40px, 5vw, 64px) 0; }

.section-head { max-width: 720px; margin-bottom: clamp(32px, 4vw, 56px); }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--brand);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.lead { font-size: clamp(1rem, 1.4vw, 1.125rem); color: var(--body); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

/* --------------------------------------------------------------------------
   04 按钮与标签
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease),
              background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: var(--sh-brand);
}
.btn--primary:hover {
  background: var(--brand-deep);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(47, 107, 255, .34);
}

.btn--ghost {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
  box-shadow: var(--sh-sm);
}
.btn--ghost:hover {
  color: var(--brand);
  border-color: rgba(47, 107, 255, .4);
  transform: translateY(-2px);
  box-shadow: var(--sh-md);
}

.btn--light {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  border-color: rgba(255, 255, 255, .28);
  backdrop-filter: blur(8px);
}
.btn--light:hover { background: rgba(255, 255, 255, .2); color: #fff; }

.btn--sm { padding: 10px 18px; font-size: .875rem; }
.btn--block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

.tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: rgba(47, 107, 255, .08);
  color: var(--brand-deep);
  font-size: .8125rem;
  font-weight: 600;
  line-height: 1.5;
}
.tag--gold { background: rgba(201, 154, 63, .12); color: #8A6520; }
.tag--muted { background: var(--line-2); color: var(--muted); }

/* --------------------------------------------------------------------------
   05 页头 / 导航
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, .82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  box-shadow: 0 1px 24px rgba(16, 32, 64, .06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-h);
}

.brand { display: flex; align-items: center; gap: 11px; color: var(--text); }
.brand:hover { color: var(--text); }
.brand__mark { width: 38px; height: 38px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-size: 1.0625rem; font-weight: 700; letter-spacing: .02em; }
.brand__sub {
  font-size: .625rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  display: block;
  padding: 9px 15px;
  border-radius: var(--r-sm);
  color: var(--body);
  font-size: .9375rem;
  font-weight: 500;
  transition: color .2s var(--ease), background .2s var(--ease);
}
.nav a:hover { color: var(--brand); background: rgba(47, 107, 255, .06); }
.nav a.is-active { color: var(--brand); font-weight: 600; }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 15px; right: 15px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--grad-brand);
}

.header-cta { display: flex; align-items: center; gap: 12px; }
/* 页头不再有电话入口（全站不公示手机号，避免骚扰） */

/* 移动端汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  position: relative;
  display: block;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: background .2s var(--ease);
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px; height: 2px;
  border-radius: 2px;
  background: var(--text);
  transition: transform .25s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { transform: translateY(-6px) rotate(-45deg); }

/* 移动抽屉 */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 99;
  background: #fff;
  padding: 16px 24px 40px;
  overflow-y: auto;
  transform: translateY(-8px);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.mobile-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
.mobile-nav a {
  display: block;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line-2);
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
}
.mobile-nav a.is-active { color: var(--brand); font-weight: 600; }
.mobile-nav .btn { margin-top: 22px; }

/* --------------------------------------------------------------------------
   06 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, .66);
  padding: clamp(48px, 6vw, 76px) 0 0;
  font-size: .9375rem;
}
.site-footer a { color: rgba(255, 255, 255, .66); }
.site-footer a:hover { color: #fff; }
.site-footer h4 {
  color: #fff;
  font-size: .8125rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
  padding-bottom: 48px;
}
.footer-brand .brand { color: #fff; }
.footer-brand .brand__name { color: #fff; }
.footer-brand .brand__sub { color: rgba(255, 255, 255, .5); }
.footer-brand p { margin: 18px 0 0; line-height: 1.8; max-width: 34ch; }

.footer-list { list-style: none; padding: 0; margin: 0; }
.footer-list li { margin-bottom: 11px; }

.footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-contact li {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
  line-height: 1.7;
}
.footer-contact svg { width: 17px; height: 17px; flex: none; margin-top: 4px; color: var(--brand-cyan); }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  font-size: .875rem;
  color: rgba(255, 255, 255, .5);
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
}
.footer-legal a { display: inline-flex; align-items: center; gap: 6px; }
.footer-legal img { height: 16px; width: auto; }

/* 备案信息块 */
.beian-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}
.beian-line a { white-space: nowrap; }

/* 公安联网备案（通过后展示备案号 + 官方图标 + 查询链接） */
.police-beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.police-beian__icon {
  width: 16px;
  height: 16px;
  flex: none;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   07 首页 Hero 与区块
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1000px 560px at 82% -12%, rgba(124, 92, 255, .20), transparent 62%),
    radial-gradient(820px 480px at 6% 8%, rgba(34, 211, 238, .16), transparent 60%),
    linear-gradient(170deg, #071022 0%, #0B1730 46%, #0A1224 100%);
  color: rgba(255, 255, 255, .82);
  padding: clamp(72px, 9vw, 132px) 0 clamp(80px, 9vw, 132px);
}
.hero::after {
  /* 徽派马头墙意象：层叠折线 */
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 96px;
  background:
    linear-gradient(to top right, transparent 49.4%, rgba(255,255,255,.055) 50%),
    linear-gradient(to top left,  transparent 49.4%, rgba(255,255,255,.055) 50%);
  background-size: 160px 96px;
  background-repeat: repeat-x;
  opacity: .9;
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 2; }
.hero h1 { color: #fff; max-width: 20ch; }
.hero .lead { color: rgba(255, 255, 255, .74); max-width: 62ch; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 9px;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16);
  color: rgba(255, 255, 255, .9);
  font-size: .8125rem;
  font-weight: 500;
  margin-bottom: 24px;
}
.hero-badge b {
  background: var(--grad-brand);
  color: #fff;
  border-radius: var(--r-pill);
  padding: 2px 10px;
  font-size: .75rem;
  font-weight: 600;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  gap: clamp(36px, 5vw, 72px);
  align-items: center;
}

/* 统计数据条 */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(48px, 6vw, 76px);
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.stat {
  background: rgba(9, 18, 36, .55);
  padding: 26px 24px;
  backdrop-filter: blur(4px);
}
.stat__num {
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
  letter-spacing: -.02em;
}
.stat__num small { font-size: .5em; font-weight: 600; margin-left: 2px; }
.stat__label { margin-top: 8px; font-size: .875rem; color: rgba(255, 255, 255, .6); }

/* 首页 Hero 右侧可视化 */
.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--r-xl);
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  overflow: hidden;
  display: grid;
  place-items: center;
}
.hero-visual svg { width: 100%; height: 100%; }

/* 能力/优势卡片 */
.feature {
  padding: 30px 28px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.feature:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-lg);
  border-color: rgba(47, 107, 255, .3);
}
.feature__icon {
  width: 50px; height: 50px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  color: var(--brand);
  margin-bottom: 20px;
}
.feature__icon svg { width: 24px; height: 24px; }
.feature h3 { margin-bottom: .45em; }
.feature p { margin: 0; font-size: .9375rem; }

/* 编号型步骤 */
.steps { counter-reset: step; display: grid; gap: 22px; }
.step {
  position: relative;
  padding-left: 68px;
  counter-increment: step;
}
.step::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0; top: 0;
  width: 46px; height: 46px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  background: var(--grad-brand);
  color: #fff;
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .02em;
  box-shadow: var(--sh-brand);
}
.step h3 { margin-bottom: .3em; font-size: 1.0625rem; }
.step p { margin: 0; font-size: .9375rem; }

/* 深色 CTA 区块 */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  background: linear-gradient(120deg, #0B1730 0%, #152A56 52%, #2A2170 100%);
  padding: clamp(40px, 5vw, 64px);
  color: rgba(255, 255, 255, .78);
}
.cta-band::before {
  content: "";
  position: absolute;
  right: -120px; top: -120px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 92, 255, .5), transparent 68%);
  pointer-events: none;
}
.cta-band h2 { color: #fff; position: relative; }
.cta-band p { position: relative; max-width: 60ch; }
.cta-band .btn-row { position: relative; margin-top: 8px; }

/* --------------------------------------------------------------------------
   08 卡片与列表组件
   -------------------------------------------------------------------------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 30px 28px;
  box-shadow: var(--sh-sm);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease), border-color .28s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--sh-md);
  border-color: rgba(47, 107, 255, .26);
}
.card h3 { margin-bottom: .4em; }
.card p:last-child { margin-bottom: 0; }

.card--flush { padding: 0; overflow: hidden; }

/* 产品卡 */
.product-card {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 30px;
  align-items: center;
  padding: 30px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
}
.product-card__media {
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg-soft);
  aspect-ratio: 1 / 1;
}
.product-card__media img { width: 100%; height: 100%; object-fit: cover; }

/* 新闻列表 */
.news-list { display: grid; gap: 0; }
.news-item {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) auto;
  gap: 26px;
  align-items: center;
  padding: 26px 8px;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}
.news-item:hover { background: var(--bg-soft); }
.news-item__date {
  font-family: var(--mono);
  font-size: .8125rem;
  color: var(--muted);
  letter-spacing: .02em;
}
.news-item__title { color: var(--text); font-size: 1.0625rem; font-weight: 600; margin: 0 0 6px; }
.news-item__desc { margin: 0; font-size: .9375rem; color: var(--body); }
.news-item__more { color: var(--brand); font-size: .875rem; font-weight: 600; white-space: nowrap; }

/* 时间轴 */
.timeline { position: relative; padding-left: 30px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--brand), var(--brand-violet), transparent);
  border-radius: 2px;
}
.timeline__item { position: relative; padding-bottom: 30px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -30px; top: 8px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--brand);
}
.timeline__year {
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--brand);
  margin-bottom: 4px;
}
.timeline__item h3 { font-size: 1.0625rem; margin-bottom: .25em; }
.timeline__item p { margin: 0; font-size: .9375rem; }

/* 键值表 */
.kv { display: grid; gap: 0; border: 1px solid var(--line); border-radius: var(--r-md); overflow: hidden; }
.kv__row {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  border-bottom: 1px solid var(--line);
}
.kv__row:last-child { border-bottom: 0; }
.kv__k {
  padding: 14px 20px;
  background: var(--bg-soft);
  font-weight: 600;
  color: var(--text);
  font-size: .9375rem;
  border-right: 1px solid var(--line);
}
.kv__v { padding: 14px 20px; font-size: .9375rem; word-break: break-word; }

/* 面包屑 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  color: var(--muted);
  margin-bottom: 22px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb span { color: var(--line); }

/* --------------------------------------------------------------------------
   09 内页通用组件
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(760px 420px at 88% -30%, rgba(124, 92, 255, .22), transparent 62%),
    radial-gradient(620px 360px at 4% 0%, rgba(34, 211, 238, .14), transparent 58%),
    linear-gradient(160deg, #071022 0%, #0B1730 60%, #101B36 100%);
  color: rgba(255, 255, 255, .78);
  padding: clamp(52px, 6.5vw, 92px) 0 clamp(48px, 6vw, 84px);
}
.page-hero h1 { color: #fff; max-width: 24ch; }
.page-hero .lead { color: rgba(255, 255, 255, .72); max-width: 66ch; margin-bottom: 0; }
.page-hero .breadcrumb { color: rgba(255, 255, 255, .55); }
.page-hero .breadcrumb a { color: rgba(255, 255, 255, .55); }
.page-hero .breadcrumb a:hover { color: #fff; }
.page-hero .breadcrumb span { color: rgba(255, 255, 255, .3); }

/* 正文排版（政策类长文） */
.prose { max-width: 78ch; }
.prose h2 {
  font-size: 1.375rem;
  margin: 2.4em 0 .7em;
  padding-bottom: .4em;
  border-bottom: 1px solid var(--line);
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.0625rem; margin: 1.8em 0 .5em; }
.prose p, .prose li { font-size: .9375rem; line-height: 1.9; }
.prose ul, .prose ol { padding-left: 1.5em; }
.prose .note {
  padding: 18px 22px;
  border-radius: var(--r-md);
  background: var(--bg-soft);
  border-left: 3px solid var(--brand);
  margin: 1.6em 0;
  font-size: .9375rem;
}
.prose .note p:last-child { margin-bottom: 0; }

/* 侧边目录 */
.doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.doc-toc {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  padding: 24px;
  border-radius: var(--r-lg);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: .875rem;
}
.doc-toc h4 { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.doc-toc ol { margin: 0; padding-left: 1.2em; }
.doc-toc li { margin-bottom: 9px; }
.doc-toc a { color: var(--body); }
.doc-toc a:hover { color: var(--brand); }

/* 联系信息卡 */
.contact-card {
  display: flex;
  gap: 16px;
  padding: 26px;
  border-radius: var(--r-lg);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--sh-sm);
}
.contact-card__icon {
  width: 44px; height: 44px;
  flex: none;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  background: var(--grad-soft);
  color: var(--brand);
}
.contact-card__icon svg { width: 21px; height: 21px; }
.contact-card h3 { font-size: 1rem; margin-bottom: .3em; }
.contact-card p { margin: 0; font-size: .9375rem; word-break: break-word; }

/* 地图占位 */
.map-embed {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  min-height: 340px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 40px 24px;
}

/* --------------------------------------------------------------------------
   10 表单
   -------------------------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .875rem; font-weight: 600; color: var(--text); }
.field label .req { color: #DC2626; margin-left: 2px; }
.field input,
.field select,
.field textarea {
  font-family: inherit;
  font-size: .9375rem;
  color: var(--text);
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
  width: 100%;
}
.field textarea { resize: vertical; min-height: 130px; line-height: 1.7; }
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(47, 107, 255, .14);
}
.field .hint { font-size: .8125rem; color: var(--muted); }

/* --------------------------------------------------------------------------
   11 辅助类（无障碍）
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   12 动效
   -------------------------------------------------------------------------- */
/* 默认可见：脚本未执行时正文必须可读（备案审核/搜索爬虫/无 JS 环境） */
[data-reveal] { opacity: 1; transform: none; }

/* 仅在脚本就绪时启用进场动画 */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
  will-change: opacity, transform;
}
.js [data-reveal].is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   14 响应式
   -------------------------------------------------------------------------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .doc-layout { grid-template-columns: minmax(0, 1fr); }
  .doc-toc { position: static; order: -1; }
}

@media (max-width: 960px) {
  .nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-visual { max-width: 460px; margin: 0 auto; }
  .split { grid-template-columns: minmax(0, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-card { grid-template-columns: 150px minmax(0, 1fr); }
}

@media (max-width: 680px) {
  .wrap { padding: 0 18px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { padding: 20px 18px; }
  .news-item { grid-template-columns: minmax(0, 1fr); gap: 8px; }
  .news-item__more { display: none; }
  .product-card { grid-template-columns: minmax(0, 1fr); }
  .product-card__media { max-width: 190px; }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .kv__row { grid-template-columns: minmax(0, 1fr); }
  .kv__k { border-right: 0; border-bottom: 1px solid var(--line); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .cta-band { padding: 32px 24px; }
  .btn-row .btn { width: 100%; }
}

/* 打印 */
@media print {
  .site-header, .mobile-nav, .site-footer, .cta-band, .doc-toc { display: none; }
  body { font-size: 12pt; }
  a::after { content: " (" attr(href) ")"; font-size: 90%; color: #555; }
}