/* ==========================================================================
   东莞市宏诚通讯设备有限公司 官网样式
   设计定位：B2B 算力硬件供应商 —— 专业、克制、可信
   性能目标：单文件 CSS，无外部字体/图标请求，首屏渲染 < 1s
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  /* 品牌色：科技蓝主色 + 算力青辅色 */
  --c-primary: #19d3ae;
  --c-primary-dark: #0a9f86;
  --c-primary-light: #e4fbf5;
  --c-accent: #19d3ae;
  --c-accent-dark: #0a9f86;

  /* 中性色 */
  --c-ink: #071016;          /* 标题/深色底 */
  --c-text: #2c3e50;         /* 正文 */
  --c-text-soft: #5a6b80;    /* 辅助文字 */
  --c-line: #e3e9f0;         /* 分隔线 */
  --c-bg: #ffffff;
  --c-bg-soft: #f5f8fc;
  --c-bg-alt: #eef4fb;

  /* 布局 */
  --maxw: 1200px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px rgba(11, 27, 51, .06);
  --shadow: 0 4px 16px rgba(11, 27, 51, .08);
  --shadow-lg: 0 12px 40px rgba(11, 27, 51, .12);

  /* 字体栈：全部系统字体，零网络请求 */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
          "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
          "Noto Sans CJK SC", sans-serif;
  --font-num: "SF Mono", "DIN Alternate", "Roboto Mono", Consolas, monospace;
}

/* ---------- 2. 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px; /* 锚点跳转时避开固定头部 */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  /* 防止长英文/型号串撑破移动端布局 */
  overflow-wrap: break-word;
  word-break: break-word;
}

h1, h2, h3, h4, h5 {
  margin: 0 0 .6em;
  color: var(--c-ink);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -.01em;
}
h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.0625rem; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color .18s ease;
}
a:hover { color: var(--c-primary-dark); }

img { max-width: 100%; height: auto; display: block; }

ul, ol { margin: 0 0 1em; padding-left: 1.4em; }
li { margin-bottom: .4em; }

/* 无障碍：键盘焦点必须可见 —— 不要为了"好看"去掉 outline */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: 3px;
}

/* 跳转链接（无障碍） */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--c-primary);
  color: #fff;
  padding: 10px 18px;
  z-index: 999;
}
.skip-link:focus { left: 8px; top: 8px; color: #fff; }

/* ---------- 3. 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 72px 0; }
.section--soft { background: var(--c-bg-soft); }
.section--alt { background: var(--c-bg-alt); }

.sec-head { max-width: 760px; margin: 0 auto 48px; text-align: center; }
.sec-head h2 { margin-bottom: 12px; }
.sec-head p { color: var(--c-text-soft); font-size: 1.0625rem; }

/* 小标签 */
.eyebrow {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

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

.text-center { text-align: center; }
.mt-lg { margin-top: 40px; }

/* ---------- 4. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
  text-align: center;
}
.btn--primary { background: var(--c-primary); color: #fff; }
.btn--primary:hover { background: var(--c-primary-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn--ghost:hover { background: rgba(255,255,255,.12); color: #fff; border-color: #fff; }
.btn--outline { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }
.btn--outline:hover { background: var(--c-primary-light); color: var(--c-primary-dark); }

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

/* ---------- 5. 顶部栏 ---------- */
.topbar {
  background: var(--c-ink);
  color: rgba(255,255,255,.75);
  font-size: .8125rem;
  padding: 8px 0;
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 20px;
}
.topbar a { color: rgba(255,255,255,.85); }
.topbar a:hover { color: #fff; }

/* ---------- 6. 导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--c-line);
  transition: box-shadow .2s ease;
}
.header.is-stuck { box-shadow: var(--shadow-sm); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--c-ink);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.2;
}
.logo:hover { color: var(--c-ink); }
.logo__mark {
  width: 38px; height: 38px;
  flex-shrink: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-accent));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -.02em;
}
.logo__text small {
  display: block;
  font-size: .6875rem;
  font-weight: 500;
  color: var(--c-text-soft);
  letter-spacing: .06em;
}

.menu { display: flex; align-items: center; gap: 4px; margin: 0; padding: 0; list-style: none; }
.menu li { margin: 0; }
.menu a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font-size: .9375rem;
  font-weight: 500;
  white-space: nowrap;
}
.menu a:hover { background: var(--c-bg-soft); color: var(--c-primary); }
.menu a[aria-current="page"] { color: var(--c-primary); background: var(--c-primary-light); font-weight: 600; }

.nav__cta { flex-shrink: 0; }
.nav__cta .btn { padding: 9px 20px; font-size: .9375rem; }

/* 汉堡按钮（移动端） */
.burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: #fff;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}
.burger span {
  display: block;
  width: 18px; height: 2px;
  margin: 3px auto;
  background: var(--c-ink);
  transition: transform .25s ease, opacity .2s ease;
}
.burger.is-open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------- 7. 首屏 Hero ---------- */
.hero {
  position: relative;
  background: var(--c-ink);
  color: #fff;
  padding: 84px 0 72px;
  overflow: hidden;
}
/* 纯 CSS 装饰：网格线 + 光晕，零图片请求 */
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  right: -180px; top: -180px;
  width: 620px; height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(25,184,174,.22), transparent 68%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.hero h1 { color: #fff; font-size: 2.5rem; margin-bottom: 18px; }
.hero h1 .hl { color: var(--c-accent); }
.hero__lead {
  font-size: 1.125rem;
  color: rgba(255,255,255,.82);
  max-width: 660px;
  margin-bottom: 32px;
}
.hero .btn-row { margin-bottom: 40px; }

/* 首屏三要素：核心业务 / 地址 / 电话 —— 大模型抓取首页即得关键信息 */
.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 860px;
}
.hero-facts__item { background: rgba(255,255,255,.04); padding: 20px 22px; }
.hero-facts__label {
  display: block;
  font-size: .75rem;
  letter-spacing: .1em;
  color: rgba(255,255,255,.55);
  margin-bottom: 6px;
}
.hero-facts__value { font-size: .9375rem; color: #fff; font-weight: 500; line-height: 1.6; }
.hero-facts__value a { color: var(--c-accent); font-weight: 700; }

/* 页面内页头（非首页） */
.pagehead {
  background: linear-gradient(135deg, var(--c-ink), #0f2b28);
  color: #fff;
  padding: 56px 0 48px;
}
.pagehead h1 { color: #fff; margin-bottom: 10px; font-size: 2rem; }
.pagehead p { color: rgba(255,255,255,.78); margin: 0; max-width: 680px; }

/* 面包屑 */
.crumbs {
  font-size: .8125rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 14px;
}
.crumbs a { color: rgba(255,255,255,.75); }
.crumbs a:hover { color: #fff; }
.crumbs span { margin: 0 6px; }

/* ---------- 8. 卡片 ---------- */
.card {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
  height: 100%;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(25,211,174,.28);
}
.card__icon {
  width: 46px; height: 46px;
  border-radius: 10px;
  background: var(--c-primary-light);
  display: grid; place-items: center;
  margin-bottom: 16px;
  color: var(--c-primary);
}
.card__icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 8px; font-size: 1.125rem; }
.card p { color: var(--c-text-soft); font-size: .9375rem; margin-bottom: 12px; }
.card ul { margin: 0; padding-left: 1.1em; font-size: .875rem; color: var(--c-text-soft); }
.card ul li { margin-bottom: 3px; }

/* 数字卡片 */
.stat {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
}
.stat__num {
  font-family: var(--font-num);
  font-size: 2.125rem;
  font-weight: 700;
  color: var(--c-primary);
  line-height: 1.1;
  display: block;
}
.stat__label { font-size: .875rem; color: var(--c-text-soft); margin-top: 6px; }

/* ---------- 9. 产品/方案列表 ---------- */
.prod {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 32px;
  align-items: start;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 20px;
}
.prod:last-child { margin-bottom: 0; }
.prod__visual {
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-sm);
  background: linear-gradient(145deg, var(--c-bg-alt), var(--c-primary-light));
  display: grid; place-items: center;
  color: var(--c-primary);
  border: 1px solid var(--c-line);
}
.prod__visual svg { width: 64px; height: 64px; }
.prod h3 { margin-bottom: 10px; }
.prod__desc { color: var(--c-text-soft); margin-bottom: 14px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.tags li {
  margin: 0;
  font-size: .8125rem;
  padding: 4px 12px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: 100px;
  color: var(--c-text-soft);
}

/* 规格表 */
.spec {
  width: 100%;
  border-collapse: collapse;
  font-size: .9375rem;
  margin-top: 14px;
}
.spec th, .spec td {
  border: 1px solid var(--c-line);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
}
.spec th { background: var(--c-bg-soft); font-weight: 600; width: 30%; }
.spec caption { text-align: left; font-size: .875rem; color: var(--c-text-soft); padding-bottom: 8px; }

/* ---------- 10. 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step { position: relative; text-align: center; padding: 0 8px; }
.step__num {
  width: 44px; height: 44px; margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  display: grid; place-items: center;
  font-weight: 700;
  font-family: var(--font-num);
}
.step h4 { font-size: 1rem; margin-bottom: 4px; }
.step p { font-size: .8125rem; color: var(--c-text-soft); margin: 0; }

/* ---------- 11. 案例 ---------- */
.case {
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 28px;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.case__tag {
  align-self: flex-start;
  font-size: .75rem;
  font-weight: 600;
  color: var(--c-accent-dark);
  background: rgba(25,184,174,.1);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.case h3 { font-size: 1.0625rem; margin-bottom: 10px; }
.case__meta { font-size: .8125rem; color: var(--c-text-soft); margin-bottom: 12px; }
.case__result {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
  font-size: .875rem;
  font-weight: 600;
  color: var(--c-primary);
}

/* ---------- 12. FAQ 折叠 ---------- */
.faq { border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.faq__item + .faq__item { border-top: 1px solid var(--c-line); }
.faq__q {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 18px 52px 18px 22px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-ink);
  cursor: pointer;
  position: relative;
  line-height: 1.6;
}
.faq__q::after {
  content: "";
  position: absolute;
  right: 22px; top: 26px;
  width: 9px; height: 9px;
  border-right: 2px solid var(--c-primary);
  border-bottom: 2px solid var(--c-primary);
  transform: rotate(45deg);
  transition: transform .25s ease;
}
.faq__q[aria-expanded="true"]::after { transform: rotate(-135deg); }
.faq__q:hover { background: var(--c-bg-soft); }
.faq__a {
  padding: 0 22px 20px;
  color: var(--c-text-soft);
  font-size: .9375rem;
}
/* JS 未启用时答案默认展开，保证内容可被抓取 */
.faq__a[hidden] { display: none; }

/* ---------- 13. 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }

.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--c-line);
  margin: 0;
}
.info-list li:last-child { border-bottom: 0; }
.info-list__icon { color: var(--c-primary); flex-shrink: 0; margin-top: 3px; }
.info-list__icon svg { width: 20px; height: 20px; display: block; }
.info-list__label { font-size: .8125rem; color: var(--c-text-soft); display: block; }
.info-list__value { font-weight: 600; color: var(--c-ink); font-size: 1rem; }
.info-list__value a { color: var(--c-primary); }

/* 表单 */
.form { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: .875rem; font-weight: 600; margin-bottom: 6px; color: var(--c-ink); }
.field label .req { color: #d4380d; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .9375rem;
  color: var(--c-text);
  background: #fff;
  transition: border-color .18s ease, box-shadow .18s ease;
}
.field input:hover, .field select:hover, .field textarea:hover { border-color: #c3d0e0; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(25,211,174,.12);
}
.field textarea { min-height: 110px; resize: vertical; }
.field__hint { font-size: .8125rem; color: var(--c-text-soft); margin-top: 5px; }
.field__error { font-size: .8125rem; color: #d4380d; margin-top: 5px; display: none; }
.field.is-invalid input, .field.is-invalid textarea { border-color: #d4380d; }
.field.is-invalid .field__error { display: block; }

.form__note { font-size: .8125rem; color: var(--c-text-soft); margin-top: 14px; }
.form__status {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  display: none;
}
.form__status.is-ok { display: block; background: #eaf7ee; color: #1a7f37; border: 1px solid #b7e4c4; }
.form__status.is-err { display: block; background: #fdecea; color: #b3261e; border: 1px solid #f5c6c2; }

/* 地图占位（不引第三方地图，避免拖慢加载与隐私合规风险） */
.mapbox {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg-soft);
  min-height: 260px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 32px;
  color: var(--c-text-soft);
}

/* ---------- 14. 资讯列表 ---------- */
.news-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--c-line);
}
.news-item:last-child { border-bottom: 0; }
.news-item__date {
  font-family: var(--font-num);
  font-size: .875rem;
  color: var(--c-text-soft);
  padding-top: 3px;
}
.news-item h3 { font-size: 1.0625rem; margin-bottom: 6px; }
.news-item p { font-size: .9375rem; color: var(--c-text-soft); margin: 0; }

/* ---------- 15. CTA 条 ---------- */
.cta-bar {
  background: linear-gradient(120deg, var(--c-primary-dark), var(--c-accent-dark));
  color: #fff;
  padding: 56px 0;
  text-align: center;
}
.cta-bar h2 { color: #fff; margin-bottom: 10px; }
.cta-bar p { color: rgba(255,255,255,.85); margin-bottom: 26px; }
.cta-bar .btn--primary { background: #fff; color: var(--c-primary-dark); }
.cta-bar .btn--primary:hover { background: var(--c-bg-soft); color: var(--c-primary-dark); }

/* ---------- 16. 页脚 ---------- */
.footer {
  background: var(--c-ink);
  color: rgba(255,255,255,.7);
  padding: 56px 0 0;
  font-size: .9375rem;
}
.footer h4 { color: #fff; font-size: 1rem; margin-bottom: 16px; }
.footer a { color: rgba(255,255,255,.72); }
.footer a:hover { color: var(--c-accent); }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 40px; }
.footer__list { list-style: none; margin: 0; padding: 0; }
.footer__list li { margin-bottom: 9px; }
.footer__brand p { font-size: .875rem; line-height: 1.8; }
.footer__contact { font-size: .875rem; }
.footer__contact strong { color: #fff; font-weight: 600; }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 20px 0;
  font-size: .8125rem;
  color: rgba(255,255,255,.55);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 20px;
}
.footer__bottom a { color: rgba(255,255,255,.6); }

/* 待替换占位符高亮 —— 上线前必须全部改掉 */
.todo {
  background: #fff4e6;
  border: 1px dashed #ff9c3d;
  color: #a8580a;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
}

/* ---------- 17. 返回顶部 ---------- */
.totop {
  position: fixed;
  right: 20px; bottom: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  border: 0;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .25s ease;
  z-index: 90;
}
.totop.is-show { opacity: 1; visibility: visible; transform: translateY(0); }
.totop:hover { background: var(--c-primary-dark); }
.totop svg { width: 18px; height: 18px; }

/* ---------- 18. 移动端悬浮联系条 ---------- */
.mobilebar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 95;
  display: none;
  background: #fff;
  border-top: 1px solid var(--c-line);
  box-shadow: 0 -2px 12px rgba(11,27,51,.08);
}
.mobilebar a {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 9px 4px;
  font-size: .75rem;
  color: var(--c-text);
}
.mobilebar a svg { width: 19px; height: 19px; }
.mobilebar a:first-child { background: var(--c-primary); color: #fff; }

/* ---------- 19. 响应式 ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); gap: 24px 16px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 860px) {
  .burger { display: block; }
  .nav__cta { display: none; }
  .menu {
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow);
    padding: 8px;
    gap: 2px;
    /* 默认隐藏：JS 控制展开，无 JS 时通过 .no-js 兜底显示 */
    display: none;
  }
  .menu.is-open { display: flex; }
  .menu a { padding: 12px 16px; font-size: 1rem; }
  .nav { position: relative; }

  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 52px; }
  .hero h1 { font-size: 1.75rem; }
  .hero__lead { font-size: 1rem; }
  .hero-facts { grid-template-columns: 1fr; }
  .section { padding: 52px 0; }
  .sec-head { margin-bottom: 32px; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.375rem; }
  .pagehead { padding: 40px 0 36px; }

  .prod { grid-template-columns: 1fr; gap: 20px; padding: 24px; }
  .prod__visual { max-width: 160px; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .news-item { grid-template-columns: 1fr; gap: 8px; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { justify-content: center; text-align: center; }

  .mobilebar { display: flex; }
  .totop { bottom: 70px; }
  body { padding-bottom: 58px; }
}

@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .grid-4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .form { padding: 22px; }
}

/* ---------- 20. 打印 ---------- */
@media print {
  .header, .footer, .totop, .mobilebar, .cta-bar, .burger { display: none !important; }
  body { font-size: 12pt; }
  a { text-decoration: underline; }
}

/* ---------- 21. 减少动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

/* ==========================================================================
   视觉重构：算力设备展厅
   保留原有内容结构与交互，仅重置视觉层。
   ========================================================================== */
:root {
  --c-primary: #19d3ae;
  --c-primary-dark: #0a9f86;
  --c-primary-light: #e4fbf5;
  --c-accent: #d8ff4f;
  --c-accent-dark: #a8cc25;
  --c-ink: #0a1118;
  --c-text: #24333d;
  --c-text-soft: #6b7b84;
  --c-line: #d9e3e7;
  --c-bg: #fbfcfa;
  --c-bg-soft: #f1f6f4;
  --c-bg-alt: #eaf2ef;
  --radius: 2px;
  --radius-sm: 2px;
  --shadow: 0 16px 36px rgba(8, 22, 29, .08);
  --shadow-lg: 0 24px 60px rgba(8, 22, 29, .16);
}

body {
  background: var(--c-bg);
  color: var(--c-text);
}

.topbar {
  background: #071016;
  padding: 10px 0;
  border-bottom: 1px solid rgba(216,255,79,.16);
}

.header {
  background: rgba(251,252,250,.92);
  border-bottom-color: rgba(10,17,24,.12);
}

.nav { height: 76px; }
.logo__mark {
  border-radius: 2px;
  background: #0a1118;
  color: var(--c-accent);
  box-shadow: 5px 5px 0 var(--c-primary);
}
.logo { font-size: 1.02rem; }
.menu { gap: 8px; }
.menu a { border-radius: 2px; padding: 9px 12px; }
.menu a:hover { background: var(--c-primary-light); }
.menu a[aria-current="page"] {
  background: var(--c-ink);
  color: var(--c-accent);
}

.btn {
  border-radius: 2px;
  min-height: 44px;
  letter-spacing: .01em;
}
.btn--primary {
  background: var(--c-ink);
  color: var(--c-accent);
  box-shadow: 4px 4px 0 var(--c-primary);
}
.btn--primary:hover {
  background: var(--c-primary);
  color: var(--c-ink);
  box-shadow: 2px 2px 0 var(--c-ink);
}
.btn--outline { border-color: var(--c-ink); color: var(--c-ink); }
.btn--outline:hover { background: var(--c-accent); color: var(--c-ink); }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 610px;
  padding: 112px 0 88px;
  background:
    linear-gradient(90deg, rgba(7,16,22,.98) 0%, rgba(7,16,22,.9) 48%, rgba(7,16,22,.56) 100%),
    repeating-linear-gradient(90deg, rgba(216,255,79,.08) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(216,255,79,.06) 0 1px, transparent 1px 72px),
    #0a1118;
}
.hero::before {
  width: 560px;
  height: 560px;
  right: -120px;
  top: -90px;
  border: 1px solid rgba(216,255,79,.35);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(216,255,79,.04), 0 0 0 56px rgba(216,255,79,.025);
}
.hero::after {
  width: 220px;
  height: 220px;
  right: 120px;
  bottom: 42px;
  border: 1px solid rgba(25,211,174,.44);
  transform: rotate(45deg);
}
.hero .wrap { max-width: 1240px; }
.hero h1 {
  max-width: 820px;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 1.12;
  letter-spacing: 0;
}
.hero h1 .hl { color: var(--c-accent); }
.hero__lead { max-width: 720px; color: rgba(255,255,255,.72); }
.hero .eyebrow { color: var(--c-primary) !important; letter-spacing: .18em; }
.hero-facts {
  max-width: 900px;
  gap: 1px;
  background: rgba(216,255,79,.22);
  border: 1px solid rgba(216,255,79,.22);
}
.hero-facts__item { background: rgba(7,16,22,.82); padding: 22px 24px; }
.hero-facts__label { color: var(--c-primary); }
.hero-facts__value { color: #fff; }

.section { padding: 96px 0; }
.section--soft { background: #eef4f1; }
.sec-head { margin-bottom: 52px; }
.sec-head h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); letter-spacing: 0; }
.sec-head p { max-width: 650px; margin-left: auto; margin-right: auto; }
.eyebrow { color: var(--c-primary-dark); letter-spacing: .18em; }

.card, .product-card, .solution-card, .case {
  border-radius: 2px;
  border: 1px solid var(--c-line);
  box-shadow: none;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.card:hover, .product-card:hover, .solution-card:hover, .case:hover {
  transform: translateY(-5px);
  border-color: var(--c-primary);
  box-shadow: var(--shadow);
}

.section--dark, .cta-bar, .footer {
  background: #071016;
}
.section--dark h2, .section--dark h3,
.cta-bar h2, .cta-bar h3 { color: #fff; }

.footer { border-top: 3px solid var(--c-primary); }
.footer__bottom { border-top-color: rgba(255,255,255,.12); }

.mobilebar {
  background: #071016;
  border-top-color: rgba(216,255,79,.2);
}

@media (max-width: 860px) {
  .hero { min-height: auto; padding: 82px 0 60px; }
  .hero h1 { font-size: 2.35rem; }
  .section { padding: 68px 0; }
  .nav { height: 68px; }
  .nav__cta { display: none; }
}

@media (max-width: 480px) {
  .wrap { padding-left: 18px; padding-right: 18px; }
  .hero h1 { font-size: 2rem; }
  .hero__lead { font-size: .98rem; }
  .section { padding: 56px 0; }
  .btn { width: 100%; }
  .btn-row { width: 100%; }
}

/* ==========================================================================
   21. 扩展组件（2026-10 增补）
   覆盖：导航下拉、产品/区域详情页、资质、报价、资料下载、站点地图
   说明：追加在原样式之后，同名属性以本段为准；响应式规则集中在本段末尾
   ========================================================================== */

/* ---------- 21.1 导航下拉 ---------- */
.menu__item--has-sub {
  position: relative;
  display: flex;
  align-items: center;
  align-self: stretch;
}
.menu__caret {
  display: inline-block;
  width: 0; height: 0;
  margin-left: 6px;
  vertical-align: 2px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  opacity: .55;
}
.menu__sub {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 110;
  min-width: 208px;
  margin: 0;
  padding: 8px;
  list-style: none;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: none;
}
.menu__item--has-sub:hover > .menu__sub,
.menu__item--has-sub:focus-within > .menu__sub { display: block; }
.menu__sub li { margin: 0; }
.menu__sub a {
  padding: 9px 14px;
  font-size: .9375rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.menu__sub a[aria-current="page"] { color: var(--c-primary); background: var(--c-primary-light); font-weight: 600; }

/* ---------- 21.2 详情页两栏布局 ---------- */
.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}
.detail-main { min-width: 0; }
.detail-side {
  position: sticky;
  top: 88px;
  display: grid;
  gap: 18px;
}
.side-card {
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 22px;
}
.side-card h4 { margin-bottom: 10px; }
.side-card p { font-size: .9375rem; color: var(--c-text-soft); margin-bottom: 16px; }
.side-card .spec { font-size: .875rem; }
.side-card .spec th { width: 34%; }
.side-links { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.side-links a {
  display: block;
  padding: 8px 12px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  transition: border-color .16s ease, color .16s ease;
}
.side-links a:hover { border-color: var(--c-primary); color: var(--c-primary); }

/* ---------- 21.3 场景列表（带对勾） ---------- */
.scenario-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
}
.scenario-list li {
  position: relative;
  margin: 0;
  padding-left: 26px;
  font-size: .9375rem;
  line-height: 1.6;
}
.scenario-list li::before {
  content: "";
  position: absolute;
  left: 0; top: .45em;
  width: 14px; height: 8px;
  border-left: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  transform: rotate(-45deg);
}

/* 勾选清单（报价单内容等） */
.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.check-list li {
  position: relative;
  margin: 0;
  padding: 12px 16px 12px 44px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 18px; top: 1.25em;
  width: 14px; height: 8px;
  border-left: 2px solid var(--c-primary);
  border-bottom: 2px solid var(--c-primary);
  transform: rotate(-45deg);
}

/* ---------- 21.4 表格横向滚动（移动端防溢出） ---------- */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-wrap .spec { min-width: 480px; }

/* ---------- 21.5 可点击卡片 ---------- */
.card--link {
  display: block;
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card--link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--c-primary);
  color: inherit;
}
.card__more {
  display: inline-block;
  margin-top: 14px;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--c-primary);
}
.card--link:hover .card__more { color: var(--c-primary-dark); }

/* ---------- 21.6 标签 ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--c-primary-light);
  color: var(--c-primary-dark);
  border-radius: 999px;
  font-size: .8125rem;
  font-weight: 500;
  line-height: 1.6;
}
a.tag:hover { background: var(--c-primary); color: #fff; }

/* ---------- 21.7 新闻详情正文 ---------- */
.article { max-width: 720px; }
.article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
  font-size: .875rem;
  color: var(--c-text-soft);
}
.article__meta time { font-family: var(--font-num); }
.article p {
  font-size: 1.0625rem;
  line-height: 1.9;
  margin-bottom: 1.4em;
  color: var(--c-text);
}
.article__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 32px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--c-line);
}
.article__note {
  margin-top: 24px;
  padding: 16px 18px;
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: .9375rem !important;
  color: var(--c-text-soft) !important;
}
.related-news {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--c-line);
}
.related-news h2 { font-size: 1.25rem; }
.news-list { list-style: none; margin: 0 0 24px; padding: 0; }
.news-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 18px;
  padding: 14px 0;
  margin: 0;
  border-bottom: 1px solid var(--c-line);
  font-size: .9375rem;
}
.news-list li:last-child { border-bottom: 0; }
.news-list .news-item__date { flex-shrink: 0; font-family: var(--font-num); font-size: .8125rem; }

/* ---------- 21.8 区域页 ---------- */
.area-detail {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 48px;
  align-items: start;
}

/* ---------- 21.9 资质 ---------- */
.qual-group + .qual-group { margin-top: 48px; }
.qual-group__head { margin-bottom: 20px; }
.qual-group__head h2 { font-size: 1.375rem; margin-bottom: 6px; }
.qual-group__head p { color: var(--c-text-soft); font-size: .9375rem; }
.qual-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.qual-item {
  padding: 20px 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
}
.qual-item__top { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.qual-item__top h3 { margin: 0; font-size: 1rem; flex: 1; }
.qual-item__icon { color: var(--c-primary); display: flex; }
.qual-item__value { font-size: .9375rem; margin-bottom: 6px; }
.qual-item__hint { font-size: .8125rem; color: var(--c-text-soft); margin: 0; line-height: 1.65; }
.badge {
  flex-shrink: 0;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  line-height: 1.7;
}
.badge--ok { background: #e6f6ec; color: #1a7f42; }
.badge--todo { background: #fff4e0; color: #a15c00; }

/* ---------- 21.10 提示框 ---------- */
.notice {
  padding: 22px 26px;
  background: var(--c-bg-soft);
  border-left: 4px solid var(--c-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.notice h3 { font-size: 1.0625rem; margin-bottom: 8px; }
.notice p { font-size: .9375rem; color: var(--c-text); margin: 0; }

/* ---------- 21.11 报价方案卡 ---------- */
.plan-grid { align-items: stretch; }
.plan {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}
.plan--featured {
  border-color: var(--c-primary);
  box-shadow: var(--shadow);
}
.plan__badge {
  position: absolute;
  top: -12px; left: 24px;
  padding: 3px 12px;
  background: var(--c-primary);
  color: #fff;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
}
.plan h3 { font-size: 1.25rem; margin-bottom: 4px; }
.plan__sub {
  font-size: .8125rem;
  color: var(--c-text-soft);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.plan__price {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--c-primary-dark);
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--c-line);
}
.plan__fit { font-size: .9375rem; color: var(--c-text-soft); margin-bottom: 20px; }
.plan h4 { font-size: .875rem; margin: 0 0 8px; color: var(--c-text-soft); font-weight: 600; }
.plan__list { list-style: none; margin: 0 0 16px; padding: 0; }
.plan__list li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
  font-size: .9375rem;
  line-height: 1.6;
}
.plan__list li::before {
  content: "";
  position: absolute;
  left: 2px; top: .55em;
  width: 11px; height: 6px;
  border-left: 2px solid var(--c-accent);
  border-bottom: 2px solid var(--c-accent);
  transform: rotate(-45deg);
}
.plan__list--muted li { color: var(--c-text-soft); }
.plan__list--muted li::before {
  border-color: var(--c-text-soft);
  border-left-style: dotted;
  border-bottom-style: dotted;
  width: 8px; height: 0;
  transform: none;
  top: .8em;
}
.plan__note {
  font-size: .8125rem;
  color: var(--c-text-soft);
  margin-bottom: 20px;
}
.plan .btn { margin-top: auto; }

/* ---------- 21.12 资料下载 ---------- */
.dl-list { display: grid; gap: 14px; margin-top: 28px; }
.dl-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  align-items: start;
  gap: 18px;
  padding: 20px 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color .16s ease, box-shadow .16s ease;
}
.dl-item:hover { border-color: var(--c-primary); box-shadow: var(--shadow-sm); }
.dl-item__icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-sm);
  background: var(--c-primary-light);
  color: var(--c-primary);
}
.dl-item__body h3 { font-size: 1.0625rem; margin-bottom: 6px; }
.dl-item__body p { font-size: .9375rem; color: var(--c-text-soft); margin-bottom: 10px; }
.dl-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: .8125rem;
  color: var(--c-text-soft);
}
.dl-item__action { align-self: center; }
.dl-item__action .btn { white-space: nowrap; }

/* ---------- 21.13 站点地图 ---------- */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px 48px;
}
.sitemap-group h2 {
  font-size: 1rem;
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--c-line);
  color: var(--c-primary-dark);
}
.sitemap-group ul { list-style: none; margin: 0; padding: 0; }
.sitemap-group li { margin-bottom: 9px; font-size: .9375rem; }

/* ---------- 21.14 响应式 ---------- */
@media (max-width: 1024px) {
  .detail-grid, .area-detail { grid-template-columns: 1fr; gap: 36px; }
  .detail-side { position: static; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sitemap-grid { gap: 28px 32px; }
}

@media (max-width: 860px) {
  /* 触屏无 hover，下拉改为常驻展开 */
  .menu__item--has-sub { display: block; align-self: auto; position: static; }
  .menu__caret { display: none; }
  .menu__sub {
    position: static;
    display: block;
    min-width: 0;
    margin: 0 0 6px 16px;
    padding: 0 0 0 12px;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--c-line);
    border-radius: 0;
    box-shadow: none;
  }
  .menu .menu__sub a { padding: 8px 12px; font-size: .9375rem; color: var(--c-text-soft); }
  .menu .menu__sub a[aria-current="page"] { color: var(--c-primary); background: var(--c-primary-light); }

  .scenario-list { grid-template-columns: 1fr; }
  .qual-list { grid-template-columns: 1fr; }
  .detail-side { grid-template-columns: 1fr; }
  .dl-item { grid-template-columns: 36px minmax(0, 1fr); gap: 14px; }
  .dl-item__icon { width: 36px; height: 36px; }
  .dl-item__action { grid-column: 1 / -1; }
  .dl-item__action .btn { width: 100%; justify-content: center; }
  .sitemap-grid { grid-template-columns: 1fr; gap: 28px; }
  .article p { font-size: 1rem; }
  .news-list li { flex-direction: column; gap: 4px; }
}

@media (max-width: 480px) {
  .plan { padding: 24px 20px; }
  .qual-item { padding: 18px; }
  .notice { padding: 18px 20px; }
}


/* ---------- 21.15 列表页详情入口 ---------- */
.prod h3 a { color: inherit; }
.prod h3 a:hover { color: var(--c-primary); }
.prod__more { margin: 14px 0 0; font-size: .9375rem; font-weight: 600; }
/* 触屏设备加大点击区域，避免链接过小不好点 */
@media (max-width: 860px) {
  .prod__more a, .link-more { display: inline-block; padding: 6px 0; }
}
.link-more {
  display: inline-block;
  margin-top: 6px;
  font-size: .875rem;
  font-weight: 600;
}
.news-item h3 a { color: inherit; }
.news-item h3 a:hover { color: var(--c-primary); }

/* ==========================================================================
   22. 视觉精修 v3
   目标：在不动结构的前提下提升层次、质感与节奏感。
   原则：纯 CSS，零外部资源，不改变任何既有语义与 SEO 结构。
   ========================================================================== */

:root {
  --ease: cubic-bezier(.22, .61, .36, 1);
  --shadow-card: 0 1px 2px rgba(11, 27, 51, .04), 0 8px 24px -10px rgba(11, 27, 51, .12);
  --shadow-hover: 0 2px 6px rgba(11, 27, 51, .05), 0 18px 44px -14px rgba(25, 211, 174, .26);
  --ring: 0 0 0 3px rgba(25, 211, 174, .28);
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 可见的键盘焦点环：仅在键盘导航时出现，不干扰鼠标用户 */
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ---------- 22.1 区块节奏 ---------- */
.section { padding: 88px 0; }
.section--tight { padding: 64px 0; }

.sec-head {
  max-width: 780px;
  margin: 0 auto 56px;
}

/* 英文小标两侧加细线，视觉上"托住"标题，避免孤立悬浮 */
.sec-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: .75rem;
  letter-spacing: .22em;
  font-weight: 700;
  margin-bottom: 16px;
}
.sec-head .eyebrow::before,
.sec-head .eyebrow::after {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
  opacity: .45;
}

.sec-head h2 {
  font-size: clamp(1.5rem, 2.7vw, 2.0625rem);
  line-height: 1.3;
  letter-spacing: -.015em;
  margin-bottom: 14px;
  text-wrap: balance;
}
.sec-head p {
  font-size: 1.0625rem;
  line-height: 1.8;
  max-width: 640px;
  margin: 0 auto;
  text-wrap: pretty;
}

/* 左对齐版本（详情页/区域页用） */
.sec-head--left {
  margin-left: 0;
  text-align: left;
}
.sec-head--left .eyebrow::before { display: none; }
.sec-head--left p { margin-left: 0; }

/* ---------- 22.2 页面头（内页） ---------- */
.pagehead {
  position: relative;
  padding: 64px 0 56px;
  background:
    radial-gradient(ellipse 80% 60% at 88% 0%, rgba(25, 211, 174, .18), transparent 70%),
    linear-gradient(135deg, #071016 0%, #0f2b28 62%, #0d2422 100%);
  overflow: hidden;
}
/* 细网格纹理，与首页首屏呼应 */
.pagehead::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(105deg, transparent 40%, #000 100%);
  pointer-events: none;
}
.pagehead .wrap { position: relative; z-index: 1; }
.pagehead h1 {
  font-size: clamp(1.65rem, 3vw, 2.25rem);
  letter-spacing: -.015em;
  margin-bottom: 12px;
  text-wrap: balance;
}
.pagehead p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, .8);
}

/* ---------- 22.3 卡片质感 ---------- */
.card {
  box-shadow: var(--shadow-card);
  border-color: rgba(11, 27, 51, .07);
  position: relative;
  overflow: hidden;
}
/* 顶部主色细条：hover 时从左划出，替代生硬的整体变色 */
.card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(25, 211, 174, .22);
}
.card:hover::before { transform: scaleX(1); }

.card__icon {
  background: linear-gradient(140deg, var(--c-primary-light), #f2f8ff);
  border: 1px solid rgba(25, 211, 174, .1);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.card:hover .card__icon {
  background: linear-gradient(140deg, var(--c-primary), #2a7cf0);
  color: #fff;
  border-color: transparent;
  transform: translateY(-1px) scale(1.04);
}

.card h3 { font-size: 1.0625rem; letter-spacing: -.005em; }
.card p { line-height: 1.72; }

/* ---------- 22.4 数字指标 ---------- */
.stats-band {
  position: relative;
  background: linear-gradient(135deg, #071016, #0f2b28 70%, #0d2422);
  color: #fff;
  overflow: hidden;
}
.stats-band::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -60%;
  width: 900px;
  height: 900px;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(25, 211, 174, .16), transparent 62%);
  pointer-events: none;
}
.stats-band .wrap { position: relative; z-index: 1; }
.stats-band .sec-head h2 { color: #fff; }
.stats-band .sec-head p { color: rgba(255, 255, 255, .75); }
.stats-band .eyebrow { color: var(--c-accent); }

/* 深色底上的数字卡：半透明玻璃质感 */
.stats-band .stat {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .13);
  backdrop-filter: blur(6px);
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}
.stats-band .stat:hover {
  background: rgba(255, 255, 255, .11);
  border-color: rgba(25, 211, 174, .45);
  transform: translateY(-4px);
}
.stats-band .stat__num { color: #fff; }
.stats-band .stat__num em {
  font-style: normal;
  color: var(--c-accent);
  font-size: .62em;
  margin-left: 2px;
}
.stats-band .stat__label { color: rgba(255, 255, 255, .72); }

/* ---------- 22.5 按钮 ---------- */
.btn {
  border-radius: 8px;
  letter-spacing: .01em;
  position: relative;
  transition: transform .2s var(--ease), box-shadow .25s var(--ease),
              background-color .2s var(--ease), border-color .2s var(--ease);
}
.btn--primary {
  background: linear-gradient(135deg, #2ee0c0, var(--c-primary) 55%, var(--c-primary-dark));
  box-shadow: 0 1px 2px rgba(7, 67, 168, .25), 0 8px 20px -8px rgba(25, 211, 174, .55);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 4px rgba(7, 67, 168, .28), 0 14px 30px -10px rgba(25, 211, 174, .6);
}
.btn--primary:active { transform: translateY(0); }
.btn--outline { border-width: 1.5px; }
.btn--outline:hover { transform: translateY(-2px); box-shadow: var(--shadow-card); }

/* ---------- 22.6 列表与表格细节 ---------- */
table { font-variant-numeric: tabular-nums; }

/* 正文链接：下划线渐入 */
.prose a,
.post a {
  color: var(--c-primary);
  text-decoration-color: rgba(25, 211, 174, .35);
  text-underline-offset: 3px;
  transition: text-decoration-color .2s var(--ease);
}
.prose a:hover,
.post a:hover { text-decoration-color: currentColor; }

/* ---------- 22.7 页脚 ---------- */
.footer { position: relative; }
.footer::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(25, 211, 174, .5), transparent);
}

/* ---------- 22.8 入场动效（渐进增强） ---------- */
@media (prefers-reduced-motion: no-preference) {
  html.js-anim .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .55s var(--ease), transform .55s var(--ease);
  }
  html.js-anim .reveal.is-in { opacity: 1; transform: none; }
  html.js-anim .grid > .reveal:nth-child(2) { transition-delay: .06s; }
  html.js-anim .grid > .reveal:nth-child(3) { transition-delay: .12s; }
  html.js-anim .grid > .reveal:nth-child(4) { transition-delay: .18s; }
  html.js-anim .grid > .reveal:nth-child(5) { transition-delay: .24s; }
  html.js-anim .grid > .reveal:nth-child(6) { transition-delay: .3s; }
}

/* ---------- 22.9 响应式微调 ---------- */
@media (max-width: 960px) {
  .section { padding: 64px 0; }
  .sec-head { margin-bottom: 40px; }
  .pagehead { padding: 48px 0 40px; }
}
@media (max-width: 600px) {
  .section { padding: 52px 0; }
  .sec-head h2 { letter-spacing: -.01em; }
  .sec-head .eyebrow { letter-spacing: .16em; }
  .card { padding: 22px; }
  .stats-band .stat { padding: 20px 14px; }
}

/* ==========================================================================
   22.10 首屏重构：两栏 + 机架插画
   ========================================================================== */
.hero {
  padding: 62px 0 0;
  background:
    radial-gradient(ellipse 70% 55% at 78% 8%, rgba(25, 211, 174, .15), transparent 66%),
    radial-gradient(ellipse 50% 45% at 12% 96%, rgba(25, 211, 174, .18), transparent 70%),
    linear-gradient(158deg, #050e0c 0%, #071016 46%, #0b1b19 100%);
}
.hero::before {
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, #000 30%, transparent 100%);
  mask-image: radial-gradient(ellipse 90% 80% at 50% 30%, #000 30%, transparent 100%);
}
.hero::after { display: none; }

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(0, .84fr);
  gap: 40px;
  align-items: center;
  padding-bottom: 44px;
}

.hero__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .62);
  margin-bottom: 22px;
  padding: 6px 14px 6px 10px;
  border: 1px solid rgba(255, 255, 255, .13);
  border-radius: 100px;
  background: rgba(255, 255, 255, .045);
}
.hero__brand::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(25, 211, 174, .22);
}

.hero h1 {
  font-size: clamp(1.72rem, 3.55vw, 2.72rem);
  line-height: 1.22;
  letter-spacing: -.022em;
  margin-bottom: 20px;
  text-wrap: balance;
}
.hero__h1-hl {
  background: linear-gradient(100deg, #8dffdf 0%, #19d3ae 42%, #d8ff4f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .hero__h1-hl { color: var(--c-accent); -webkit-text-fill-color: currentColor; }
}

.hero__lead {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, .76);
  max-width: 610px;
  margin-bottom: 30px;
}
.hero__lead strong { color: #fff; font-weight: 600; }

.hero .btn-row { margin-bottom: 0; gap: 12px; }
.hero .btn { padding: 13px 30px; }

.hero__art {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero__art svg {
  width: 100%;
  max-width: 348px;
  height: auto;
  filter: drop-shadow(0 26px 54px rgba(0, 0, 0, .5));
}

@media (prefers-reduced-motion: no-preference) {
  .led { animation: ledPulse 2.6s var(--ease) infinite; }
  .led-b { animation-delay: .9s; }
  .led-c { animation-delay: 1.7s; }
  @keyframes ledPulse {
    0%, 100% { opacity: .3; }
    50% { opacity: 1; }
  }
  .dataflow {
    stroke-dasharray: 5 9;
    animation: flow 2.4s linear infinite;
  }
  @keyframes flow { to { stroke-dashoffset: -28; } }
}

.hero > .wrap:last-child { padding-bottom: 0; }
.hero-facts {
  max-width: none;
  grid-template-columns: 1.25fr 1.05fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .1);
  border-bottom: 0;
  border-radius: 12px 12px 0 0;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.hero-facts__item {
  background: rgba(9, 26, 48, .72);
  padding: 22px 26px;
  transition: background .25s var(--ease);
}
.hero-facts__item:hover { background: rgba(17, 42, 74, .88); }
.hero-facts__label {
  font-size: .6875rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .45);
  margin-bottom: 8px;
}
.hero-facts__value {
  font-size: .9375rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, .92);
}
.hero-facts__value a { color: var(--c-accent); }

@media (max-width: 1100px) {
  .hero__grid { gap: 28px; }
  .hero__art svg { max-width: 290px; }
}
@media (max-width: 960px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-bottom: 44px;
  }
  .hero__art { order: -1; margin-bottom: -6px; }
  .hero__art svg { max-width: 220px; }
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts__item { padding: 18px 20px; }
}
@media (max-width: 600px) {
  .hero { padding-top: 44px; }
  .hero__brand { font-size: .75rem; margin-bottom: 18px; }
  .hero__lead { font-size: 1rem; }
  .hero .btn { flex: 1 1 100%; }
}

/* ---------- 22.11 深色数字带的补充文字 ---------- */
.stats-band .stats-note {
  margin: 40px auto 0;
  max-width: 760px;
  text-align: center;
  font-size: .9375rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, .62);
  text-wrap: pretty;
}
.stats-band .stats-note strong {
  color: #fff;
  font-weight: 600;
}

/* ---------- 22.12 内页正文区留白 ---------- */
.prose h2 { margin-top: 2.2em; }
.prose h2:first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.25em; }
.prose li { margin-bottom: .45em; }

/* ---------- 22.13 面包屑可读性 ---------- */
.pagehead .crumbs { margin-bottom: 16px; }
.pagehead .crumbs a { text-decoration: none; }
.pagehead .crumbs a:hover { text-decoration: underline; }

/* ---------- 22.14 选中文本 ---------- */
::selection {
  background: rgba(25, 211, 174, .16);
  color: var(--c-ink);
}

/* ==========================================================================
   23. 视觉校准：三色体系收敛
   规则：墨黑承担结构，薄荷绿承担强调，荧光黄绿只做极小面积点缀（≤5%）。
   目的：消除荧光色大面积使用带来的廉价感与视觉疲劳。
   ========================================================================== */

/* --- 23.1 圆角统一：原 2px 过锐、新组件 10px 过软，统一到 6px --- */
:root {
  --radius: 6px;
  --radius-sm: 6px;
}

/* --- 23.2 导航当前项：黑底荧光 → 浅绿底 + 底部指示条 --- */
.menu a[aria-current="page"] {
  background: rgba(25, 211, 174, .13);
  color: #0a1118;
  box-shadow: inset 0 -2px 0 var(--c-primary);
}
.menu a[aria-current="page"]:hover {
  background: rgba(25, 211, 174, .2);
  color: #0a1118;
}

/* --- 23.3 主按钮：墨底荧光字 → 薄荷绿底墨字，硬阴影收敛 --- */
.btn--primary {
  color: #04120f;
  background: linear-gradient(135deg, #2ee0c0, var(--c-primary) 60%, #12b89a);
  box-shadow: 0 1px 2px rgba(4, 18, 15, .18), 0 6px 16px -6px rgba(25, 211, 174, .5);
}
.btn--primary:hover {
  background: linear-gradient(135deg, var(--c-primary), #0a9f86 70%, #08856f);
  color: #04120f;
  box-shadow: 0 2px 4px rgba(4, 18, 15, .2), 0 12px 26px -8px rgba(25, 211, 174, .55);
}
.btn--ghost {
  border-color: rgba(255, 255, 255, .42);
  color: #fff;
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, .1);
  border-color: var(--c-primary);
  color: #fff;
}

/* --- 23.4 Logo：错位阴影收敛，避免视觉噪声 --- */
.logo__mark { box-shadow: 3px 3px 0 var(--c-primary); }

/* --- 23.5 卡片：统一圆角 + 柔和不透明阴影 --- */
.card, .product-card, .solution-card, .case {
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(8, 22, 29, .04), 0 8px 22px -12px rgba(8, 22, 29, .14);
}
.card:hover, .product-card:hover, .solution-card:hover, .case:hover {
  border-color: rgba(25, 211, 174, .55);
  box-shadow: 0 2px 5px rgba(8, 22, 29, .05), 0 18px 40px -16px rgba(25, 211, 174, .38);
}
.card__icon {
  background: linear-gradient(140deg, rgba(25, 211, 174, .14), rgba(25, 211, 174, .04));
  border: 1px solid rgba(25, 211, 174, .2);
  color: var(--c-primary-dark);
}
.card:hover .card__icon {
  background: linear-gradient(140deg, var(--c-primary), #12b89a);
  color: #04120f;
  border-color: transparent;
}

/* --- 23.6 卡片顶部指示条：蓝色渐变 → 薄荷渐变 --- */
.card::before {
  background: linear-gradient(90deg, var(--c-primary), var(--c-accent));
}

/* --- 23.7 首屏：标题高亮、光圈、facts 边框全部收敛到薄荷绿 --- */
.hero__h1-hl {
  background: linear-gradient(96deg, #8dffdf 0%, #2ee0c0 38%, #d8ff4f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.hero__brand::before {
  background: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(25, 211, 174, .2);
}
.hero-facts {
  background: rgba(25, 211, 174, .18);
  border-color: rgba(25, 211, 174, .22);
}
.hero-facts__label { color: var(--c-primary); }
.hero-facts__value a { color: var(--c-primary); }
.hero-facts__item:hover { background: rgba(11, 26, 24, .9); }

/* --- 23.8 深色数字带 --- */
.stats-band {
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%, rgba(25, 211, 174, .13), transparent 68%),
    linear-gradient(160deg, #050e0c, #071016 55%, #0b1b19);
}
.stats-band .stat { border-color: rgba(255, 255, 255, .12); }
.stats-band .stat:hover { border-color: rgba(25, 211, 174, .5); }
.stats-band .stat__num { color: #fff; }
.stats-band .stat__num em { color: var(--c-primary); }

/* --- 23.9 内页头 --- */
.pagehead {
  background:
    radial-gradient(ellipse 75% 60% at 88% 0%, rgba(25, 211, 174, .14), transparent 68%),
    linear-gradient(135deg, #050e0c 0%, #0a1a18 55%, #0d2422 100%);
}
.pagehead::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
}

/* --- 23.10 页脚与移动条 --- */
.footer { border-top: 2px solid var(--c-primary); }
.footer::before {
  background: linear-gradient(90deg, transparent, rgba(25, 211, 174, .55), transparent);
}
.mobilebar { border-top-color: rgba(25, 211, 174, .22); }

/* --- 23.11 选中文本 / 焦点环 --- */
::selection {
  background: rgba(25, 211, 174, .22);
  color: #06110f;
}
:focus-visible {
  outline: 2px solid var(--c-primary-dark);
  outline-offset: 3px;
}

/* ==========================================================================
   24. 组件强化
   针对已渲染页面暴露的具体弱点逐项修正，全部为视觉层，不改内容结构。
   ========================================================================== */

/* --- 24.1 产品/方案卡：序号水印 + 列表点 + 等高 --- */
.grid-3 { counter-reset: cardidx; }
.grid-3 > .card { counter-increment: cardidx; }

/* 右上角淡序号：给同质化的卡片提供定位感，不影响阅读 */
.grid-3 > .card::after {
  content: counter(cardidx, decimal-leading-zero);
  position: absolute;
  top: 14px;
  right: 20px;
  font-family: var(--font-num);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(10, 17, 24, .055);
  pointer-events: none;
  transition: color .3s var(--ease);
}
.grid-3 > .card:hover::after { color: rgba(25, 211, 174, .22); }

/* 列表点：默认圆点 → 薄荷色小方块，更精细 */
.card ul { list-style: none; padding-left: 0; }
.card ul li {
  position: relative;
  padding-left: 16px;
  line-height: 1.65;
}
.card ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--c-primary);
}

/* --- 24.2 数字指标：放大，强化分量 --- */
.stat__num {
  font-size: clamp(2.2rem, 3.4vw, 2.9rem);
  letter-spacing: -.03em;
}
.stats-band .stat { padding: 32px 20px; }
.stats-band .stat__label { font-size: .8125rem; letter-spacing: .02em; margin-top: 10px; }

/* --- 24.3 服务流程：补连接线，让"流程"真正连起来 --- */
.steps { gap: 12px; }
.step { padding: 0 10px; }
.step::after {
  content: "";
  position: absolute;
  top: 22px;
  left: calc(50% + 32px);
  width: calc(100% - 64px);
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    rgba(10, 17, 24, .18) 0 5px,
    transparent 5px 11px
  );
  pointer-events: none;
}
.steps > .step:last-child::after { display: none; }

.step__num {
  width: 46px;
  height: 46px;
  background: linear-gradient(140deg, #2ee0c0, var(--c-primary) 60%, #12b89a);
  color: #04120f;
  font-size: 1.0625rem;
  box-shadow:
    0 0 0 4px #fff,
    0 0 0 5px rgba(25, 211, 174, .22),
    0 6px 14px -6px rgba(25, 211, 174, .6);
  transition: transform .25s var(--ease);
}
.step:hover .step__num { transform: translateY(-3px) scale(1.04); }
.step h4 { font-size: 1.0625rem; margin-bottom: 6px; }
.step p { font-size: .875rem; line-height: 1.7; }

/* --- 24.4 行业标签：从弱胶囊升级为可感知的目录 --- */
.tags { gap: 10px; }
.tags li {
  font-size: .875rem;
  padding: 8px 17px;
  background: #fff;
  border: 1px solid var(--c-line);
  color: var(--c-text);
  font-weight: 500;
  transition: border-color .2s var(--ease), color .2s var(--ease),
              background-color .2s var(--ease), transform .2s var(--ease);
}
.tags li:hover {
  border-color: var(--c-primary);
  color: var(--c-primary-dark);
  background: rgba(25, 211, 174, .07);
  transform: translateY(-2px);
}

/* --- 24.5 FAQ：触发器更有可点感 --- */
.faq__item {
  border-radius: var(--radius);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}
.faq__item:hover { border-color: rgba(25, 211, 174, .45); }
.faq__q {
  font-weight: 600;
  letter-spacing: -.005em;
  transition: color .2s var(--ease);
}
.faq__item:hover .faq__q { color: var(--c-primary-dark); }
.faq__a { line-height: 1.85; }

/* --- 24.6 CTA 条：加一层网格纹理，与首屏呼应 --- */
.cta-bar {
  position: relative;
  overflow: hidden;
}
.cta-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000, transparent 78%);
  mask-image: radial-gradient(ellipse 70% 100% at 50% 50%, #000, transparent 78%);
  pointer-events: none;
}
.cta-bar .wrap { position: relative; z-index: 1; }
.cta-bar h2 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); }

/* --- 24.7 页脚：链接层次 --- */
.footer__list a { transition: color .18s var(--ease), padding-left .18s var(--ease); }
.footer__list a:hover { color: var(--c-primary); }
.footer h4 {
  font-size: .8125rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .55);
  margin-bottom: 16px;
}
.footer__list li { margin-bottom: 9px; }
.footer__list a { color: rgba(255, 255, 255, .82); font-size: .9375rem; }

/* --- 24.8 表格：斑马纹 + 首列强调 --- */
.spec tbody tr:nth-child(even),
table tbody tr:nth-child(even) { background: rgba(10, 17, 24, .018); }
table td:first-child { font-weight: 600; color: var(--c-ink); }

/* --- 24.9 响应式：小屏收起流程连接线 --- */
@media (max-width: 860px) {
  .step::after { display: none; }
  .grid-3 > .card::after { font-size: 2rem; }
}

/* ==========================================================================
   25. 对比度修复（WCAG 2.1 AA）
   实测问题：薄荷绿 #19d3ae 在白底仅 1.91:1、#0a9f86 仅 3.23:1，
   远低于正文 4.5:1 的门槛。规则：
     · 背景/装饰/大色块 → 保留 #19d3ae（视觉张力）
     · 浅底上的文字     → 统一使用 --c-primary-ink（5.4:1）
     · 深底上的文字     → 仍用 #19d3ae（深底上为 10:1，足够）
   ========================================================================== */

:root {
  --c-primary-ink: #06755f;   /* 浅底文字专用：白底 5.4:1，浅绿底 4.9:1 */
  --c-text-soft: #5f7079;     /* 原 #6b7b84 为 4.38:1，微调至 5.1:1 */
}

/* --- 25.1 跳转链接：绿底白字 → 墨底白字 + 绿边（1.91 → 17:1） --- */
.skip-link {
  background: #0a1118;
  color: #fff;
  border: 1px solid var(--c-primary);
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { background: #0a1118; color: #fff; }

/* --- 25.2 小标（English eyebrow）：浅底用深绿 --- */
.eyebrow { color: var(--c-primary-ink); }

/* 深色区块内恢复亮绿，保证在深底上的辨识度 */
.hero .eyebrow,
.pagehead .eyebrow,
.stats-band .eyebrow,
.cta-bar .eyebrow,
.section--dark .eyebrow,
.footer .eyebrow { color: var(--c-primary); }

/* --- 25.3 侧栏与正文链接 --- */
.side-links a { color: var(--c-primary-ink); }
.side-links a:hover {
  color: #04584a;
  border-color: var(--c-primary);
  background: rgba(25, 211, 174, .07);
}

.info-list__value a,
.info-list a { color: var(--c-primary-ink); }
.info-list__value a:hover,
.info-list a:hover { color: #04584a; text-decoration: underline; }

.prose a,
.post a,
.faq__a a { color: var(--c-primary-ink); }

/* --- 25.4 报价卡价格行 --- */
.plan__price { color: var(--c-primary-ink); }

/* --- 25.5 CTA 条主按钮：白底深绿字 --- */
.cta-bar .btn--primary { color: var(--c-primary-ink); }
.cta-bar .btn--primary:hover { color: #04584a; background: #f2fbf8; }

/* --- 25.6 表单提示与占位符 --- */
.form__note { color: var(--c-text-soft); }
::placeholder { color: #7a8a92; opacity: 1; }

/* --- 25.7 移动端悬浮条：文字对比度 --- */
.mobilebar a { color: rgba(255, 255, 255, .92); }
.mobilebar a:hover,
.mobilebar a:focus { color: var(--c-primary); }

/* --- 25.8 补充：表单说明内链接、方案徽章 --- */
.form__note a { color: var(--c-primary-ink); text-decoration: underline; text-decoration-color: rgba(6,117,95,.4); }
.form__note a:hover { color: #04584a; }
.plan__badge { background: var(--c-primary); color: #04120f; font-weight: 700; }

/* --- 25.9 浅底数字：深绿；深色带内保持白 --- */
.stat__num { color: var(--c-primary-ink); }
.stats-band .stat__num { color: #fff; }
.stats-band .stat__num em { color: var(--c-primary); }

/* ==========================================================================
   26. 移动端首屏调优
   问题：插画占据 240px 垂直空间，把主标题挤到屏幕中段，首屏看不到按钮。
   方案：小屏下插画脱流为背景装饰，文字优先。
   ========================================================================== */
@media (max-width: 960px) {
  .hero__grid { position: relative; }

  .hero__art {
    position: absolute;
    top: 8px;
    right: -56px;
    width: 232px;
    max-width: none;
    margin: 0;
    order: 0;
    opacity: .26;
    z-index: 0;
    pointer-events: none;
  }
  .hero__art svg { max-width: 232px; }

  .hero__main { position: relative; z-index: 1; }

  /* 首屏信任条：压缩为两列紧凑布局，避免三条纵向拉满 */
  .hero-facts { grid-template-columns: 1fr; }
  .hero-facts__item { padding: 15px 18px; }
  .hero-facts__label { margin-bottom: 5px; font-size: .625rem; }
  .hero-facts__value { font-size: .875rem; line-height: 1.6; }

  /* 顶栏：移动端只留服务热线，公司描述隐藏 */
  .topbar .wrap > span:first-child { display: none; }
  .topbar { padding: 8px 0; }
  .topbar .wrap { justify-content: center; }
  .topbar .wrap > span { font-size: .8125rem; }

  /* 底部悬浮条不遮挡内容 */
  body { padding-bottom: 62px; }
}

@media (max-width: 600px) {
  .hero { padding-top: 34px; }
  .hero__brand {
    font-size: .6875rem;
    padding: 5px 12px 5px 9px;
    margin-bottom: 16px;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .hero h1 { font-size: 1.72rem; line-height: 1.24; margin-bottom: 16px; }
  .hero__lead { font-size: .9375rem; line-height: 1.75; margin-bottom: 22px; }
  .hero__art { width: 190px; right: -62px; top: 4px; opacity: .22; }
  .hero__grid { padding-bottom: 32px; gap: 24px; }
  .hero .btn { padding: 12px 24px; font-size: .9375rem; }
  .hero .btn-row { gap: 10px; }
}

/* 超小屏：插画完全退为极淡底纹 */
@media (max-width: 400px) {
  .hero__art { opacity: .16; right: -78px; }
}

/* --- 26.9 移动端数字区改 2×2，避免四个大卡纵向拉长页面 --- */
@media (max-width: 640px) {
  .stats-band .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stats-band .stat { padding: 22px 12px; }
  .stats-band .stat__num { font-size: 1.9rem; }
  .stats-band .stat__label { font-size: .75rem; margin-top: 6px; }
  /* 卡片内序号在小屏缩小并右移，避免压住标题 */
  .grid-3 > .card::after { font-size: 1.8rem; top: 12px; right: 16px; }
}

/* --- 26.10 首屏信任条：列宽与折行微调 --- */
.hero-facts { grid-template-columns: 1.36fr 1fr 1.02fr; }
.hero-facts__value { font-size: .9063rem; }
@media (max-width: 1180px) {
  .hero-facts { grid-template-columns: 1.2fr 1fr 1fr; }
  .hero-facts__item { padding: 20px 20px; }
}

/* ==========================================================================
   27. 响应承诺 · 微信同号（2026-11-02 补充）
   承诺口径：24 小时内出报价 / 珠三角核心城市 48 小时到场 / 微信与手机同号
   ========================================================================== */

/* --- 27.1 顶部信任条 --- */
.trustbar {
  background: #071016;
  color: #c2d8d2;
  font-size: .8125rem;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.trustbar__in {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 38px;
}
.trustbar__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  color: #b9d2cb;
}
.trustbar__item svg { color: var(--c-primary); flex: none; }
.trustbar__item b { color: #eaf7f3; font-weight: 600; }
.trustbar__item em { font-style: normal; color: #9bb8b1; font-size: .75rem; }
.trustbar__item--wx { margin-left: auto; }

/* --- 27.2 复制微信号按钮 --- */
.copy-btn {
  margin-left: 4px;
  padding: 2px 9px;
  font-family: inherit;
  font-size: .75rem;
  line-height: 1.7;
  color: #19d3ae;
  background: transparent;
  border: 1px solid rgba(25, 211, 174, .55);
  border-radius: 4px;
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}
.copy-btn:hover { background: rgba(25, 211, 174, .16); }
.copy-btn:focus-visible { outline: 2px solid #19d3ae; outline-offset: 2px; }
.copy-btn.is-done {
  color: #06231d;
  background: #19d3ae;
  border-color: #19d3ae;
}
.copy-btn--foot { margin-left: 6px; vertical-align: 1px; }

/* --- 27.3 响应承诺区块 --- */
.promise { padding: 64px 0; background: var(--c-bg); border-top: 1px solid var(--c-line); }
.promise__head { max-width: 760px; margin-bottom: 30px; }
.promise__head h2 { margin: 8px 0 12px; }
.promise__head p { color: var(--c-text-soft); line-height: 1.8; margin: 0; }
.promise__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.promise__card {
  position: relative;
  padding: 26px 24px 24px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.promise__card .promise__icon { color: var(--c-primary-ink); }
.promise__card b {
  display: block;
  margin: 14px 0 6px;
  font-family: var(--font-num);
  font-size: 1.5rem;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-ink);
}
.promise__card h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--c-ink);
  font-weight: 600;
}
.promise__card p {
  margin: 0;
  font-size: .9063rem;
  line-height: 1.75;
  color: var(--c-text-soft);
}
.promise__card--wx { background: #071016; border-color: #071016; }
.promise__card--wx .promise__icon { color: #19d3ae; }
.promise__card--wx b { color: #eaf7f3; letter-spacing: .01em; }
.promise__card--wx h3 { color: #fff; }
.promise__card--wx p { color: #b9d2cb; }
.promise__card--wx a { color: #19d3ae; text-decoration: underline; text-underline-offset: 3px; }
.promise__note {
  margin: 18px 0 0;
  font-size: .8125rem;
  color: var(--c-text-soft);
}

/* --- 27.4 CTA 条补充承诺行 --- */
.cta-bar__sla {
  margin: 20px 0 0;
  font-size: .875rem;
  letter-spacing: .01em;
  color: rgba(255, 255, 255, .82);
}

/* --- 27.5 响应式 --- */
@media (max-width: 900px) {
  .promise__grid { grid-template-columns: 1fr 1fr; }
  .promise__card--wx { grid-column: 1 / -1; }
}
@media (max-width: 860px) {
  /* 小屏只保留微信同号，避免顶部条挤成两行 */
  .trustbar__item:not(.trustbar__item--wx) { display: none; }
  .trustbar__in { justify-content: space-between; gap: 10px; }
  .trustbar__item--wx { margin-left: 0; }
}
@media (max-width: 640px) {
  .promise { padding: 44px 0; }
  .promise__grid { grid-template-columns: 1fr; }
  .cta-bar__sla { font-size: .8125rem; line-height: 1.7; }
}

/* --- 27.6 表单提交后的需求摘要（静态站送达方案）--- */
.lead-out {
  margin-top: 18px;
  padding: 20px;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--radius-sm);
}
.lead-out__tip {
  margin: 0;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--c-text);
}
.lead-out__text {
  margin: 12px 0 14px;
  padding: 14px 16px;
  max-height: 240px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font);
  font-size: .875rem;
  line-height: 1.85;
  color: var(--c-ink);
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.lead-out .btn-row { margin: 0; }

/* --- 27.7 浅底上的复制按钮：改用 c-primary-ink 保证 5.4:1 对比度 --- */
.info-list .copy-btn,
.lead-out .copy-btn,
.promise__card:not(.promise__card--wx) .copy-btn {
  color: var(--c-primary-ink);
  border-color: rgba(6, 117, 95, .45);
}
.info-list .copy-btn:hover,
.lead-out .copy-btn:hover,
.promise__card:not(.promise__card--wx) .copy-btn:hover {
  background: rgba(6, 117, 95, .1);
}
.info-list .copy-btn:focus-visible,
.lead-out .copy-btn:focus-visible { outline-color: var(--c-primary-ink); }
.info-list .copy-btn.is-done,
.lead-out .copy-btn.is-done,
.promise__card:not(.promise__card--wx) .copy-btn.is-done {
  color: #fff;
  background: var(--c-primary-ink);
  border-color: var(--c-primary-ink);
}
.info-list__value .copy-btn { margin-left: 8px; vertical-align: 2px; }

/* --- 27.8 原顶栏与信任条信息重复，统一由信任条承担（邮箱见页脚/联系页）--- */
.topbar { display: none !important; }

/* --- 27.9 修复：末尾 26.10 的 1180px 三列规则盖住了早期 640px 单列规则，
       导致手机端首屏三块信息被压成窄条、文字逐字换行 --- */
@media (max-width: 640px) {
  .hero-facts { grid-template-columns: 1fr; gap: 8px; }
  .hero-facts__item { padding: 16px 18px; }
  .hero-facts__value { font-size: .875rem; line-height: 1.65; }
}

/* --- 28. 区域页「典型配置建议」列表 --- */
.advice {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.advice__item {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-primary-dark);
  border-radius: 6px;
  padding: 18px 20px;
}
.advice__item h3 {
  font-size: 1rem;
  line-height: 1.45;
  margin: 0 0 8px;
  color: var(--c-ink);
}
.advice__item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-text-soft);
}
@media (max-width: 768px) {
  .advice { grid-template-columns: 1fr; gap: 12px; }
  .advice__item { padding: 16px 18px; }
}

/* 区域页 FAQ 与上方内容的呼吸感 */
.area-detail .faq { margin-top: 4px; }

/* --- 29. 区域页「其他服务区域」链接行 --- */
.area-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}
.area-links li { margin: 0; }
.area-links a {
  font-size: .9375rem;
  /* 浅底必须用 primary-ink（5.65:1）；primary-dark #0a9f86 在白底仅 3.32:1，不达 AA */
  color: var(--c-primary-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s;
}
.area-links a:hover { border-bottom-color: var(--c-primary-ink); }
@media (max-width: 640px) {
  .area-links { flex-direction: column; gap: 10px; }
}

/* --- 30. 导航折叠断点修正 ---
   原汉堡菜单断点为 860px，但桌面导航整行实际需要约 1190px。
   导致 861-1189px（含 1024 平板横屏、1366 笔记本缩放）出现横向滚动、导航被切。
   这里只把「导航」相关规则提到 1180px，其余栅格布局仍按 860px 折叠。 */
@media (max-width: 1180px) {
  .burger { display: block; }
  .nav__cta { display: none; }
  .nav { position: relative; }
  .menu {
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow);
    padding: 8px;
    gap: 2px;
    display: none;
  }
  .menu.is-open { display: flex; }
  .menu a { padding: 12px 16px; font-size: 1rem; }
  .menu__caret { display: none; }
  .menu__sub {
    position: static;
    display: block;
    box-shadow: none;
    border: 0;
    padding: 0 0 0 12px;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
}

/* --- 31. 首屏装饰圆环撑开页面宽度 ---
   .hero::before/::after 用 right:-180px 外扩做光晕，但 .hero 未裁剪。
   宽屏时右侧留白足以容纳，1024 及以下留白不足 → 整个页面出现横向滚动。
   加 overflow 裁剪（优先进 clip，不创建滚动容器，不影响内部绝对定位元素）。 */
.hero { overflow: hidden; overflow: clip; }

/* --- 32. 服务流程连线条撑宽页面（1024 断点）---
   .step::after 是步骤之间的虚线，left:calc(50%+32px)、width:calc(100%-64px)，
   故意画到下一个圆心。5 列时行末项是 :last-child 已隐藏；
   但 1024 断点改 3 列后，第 3 项位于行末、不是 last-child，
   连线右端超出列 124px → ol.steps 被撑到 1085，整个页面横向滚动。
   只裁横向（overflow-x:clip 可与 overflow-y:visible 共存，不切 hover 上移与光圈阴影）。 */
.steps { overflow-x: clip; }

/* --- 33. 内容资产页（案例详情 / 方案详情 / 对比 / 词典 / 自检 / 搜索）---
   新增组件统一放在文件末尾：本文件是「分层追加覆盖」结构，
   写在前面的规则会被后段压回。浅底文字一律用 --c-primary-ink。 */

/* 33.1 通用：窄容器、图注、提示条 */
.wrap--narrow { max-width: 820px; }
.table-caption {
  caption-side: top;
  text-align: left;
  font-size: .875rem;
  color: var(--c-text-soft);
  padding: 0 0 10px;
}
.notice--muted {
  background: var(--c-bg-soft);
  border-left: 3px solid var(--c-line);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  font-size: .9375rem;
  color: var(--c-text);
  line-height: 1.75;
}
.notice--muted strong { color: var(--c-ink); }
.intent-note {
  background: var(--c-primary-light);
  border-left: 3px solid var(--c-primary);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-text);
  margin-bottom: 28px;
}
.intent-note strong { color: var(--c-primary-ink); }

/* 33.2 案例列表 */
.caselist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.caselist__item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 26px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
  color: inherit;
  text-decoration: none;
}
.caselist__item:hover,
.caselist__item:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(25, 211, 174, .5);
  box-shadow: var(--shadow-hover);
}
.caselist__item .case__tag { align-self: flex-start; }
.caselist__item h2 {
  font-size: 1.1875rem;
  line-height: 1.45;
  margin: 0;
  color: var(--c-ink);
}
.caselist__meta {
  font-size: .8125rem;
  color: var(--c-text-soft);
  margin: 0;
}
.caselist__sum {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-text);
  margin: 0;
}
.caselist__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 6px 0 0;
  padding: 14px 0 0;
  border-top: 1px dashed var(--c-line);
}
.caselist__facts div { margin: 0; }
.caselist__facts dt {
  font-size: .75rem;
  color: var(--c-text-soft);
  margin-bottom: 3px;
}
.caselist__facts dd {
  margin: 0;
  font-size: .875rem;
  font-weight: 600;
  color: var(--c-primary-ink);
  line-height: 1.5;
}
.caselist__item .card__more { margin-top: 4px; font-size: .875rem; }

/* 33.3 案例详情：表格、放弃方案、时间线、相关列表 */
.spec--result td strong { color: var(--c-primary-ink); }
.spec--tight th,
.spec--tight td { padding: 8px 10px; font-size: .875rem; }

.rejected { display: grid; gap: 12px; margin: 18px 0 8px; }
.rejected__item {
  padding: 16px 18px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--c-line);
}
.rejected__item h4 {
  font-size: .9688rem;
  margin: 0 0 6px;
  color: var(--c-ink);
}
.rejected__item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--c-text);
}
.rejected__item--warn {
  background: #fffaf3;
  border-left-color: #ff9c3d;
}

.timeline {
  list-style: none;
  margin: 18px 0 8px;
  padding: 0 0 0 6px;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--c-line);
}
.timeline__item {
  position: relative;
  padding: 0 0 18px 26px;
}
.timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--c-primary);
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__day {
  display: inline-block;
  font-family: var(--font-num);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--c-primary-ink);
  background: var(--c-primary-light);
  border-radius: 4px;
  padding: 2px 8px;
  margin-bottom: 6px;
}
.timeline__item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--c-text);
}

.rel-list { list-style: none; margin: 0; padding: 0; }
.rel-list li {
  padding: 11px 0;
  border-bottom: 1px dashed var(--c-line);
  font-size: .9375rem;
  line-height: 1.6;
}
.rel-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.rel-list a { color: var(--c-primary-ink); font-weight: 600; text-decoration: none; }
.rel-list a:hover { text-decoration: underline; }
.rel-list span {
  display: block;
  font-size: .8125rem;
  color: var(--c-text-soft);
  margin-top: 3px;
  font-weight: 400;
}

/* 33.4 解决方案：列表网格与档位卡 */
.solgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.solgrid__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 26px 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  color: inherit;
  text-decoration: none;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s;
}
.solgrid__item:hover,
.solgrid__item:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(25, 211, 174, .5);
  box-shadow: var(--shadow-hover);
}
.solgrid__num {
  font-family: var(--font-num);
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--c-primary-ink);
}
.solgrid__item h2 {
  font-size: 1.1875rem;
  margin: 0;
  color: var(--c-ink);
  line-height: 1.4;
}
.solgrid__tag {
  margin: 0;
  font-size: .9375rem;
  color: var(--c-primary-ink);
  line-height: 1.6;
}
.solgrid__desc {
  margin: 0;
  font-size: .9375rem;
  color: var(--c-text);
  line-height: 1.75;
}
.solgrid__item .card__more { margin-top: auto; padding-top: 10px; font-size: .875rem; }

.advice__num {
  display: inline-block;
  font-family: var(--font-num);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--c-primary-ink);
  margin-right: 10px;
  vertical-align: 1px;
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0 12px;
}
.tier {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.tier__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}
.tier__head h3 {
  font-size: 1rem;
  margin: 0;
  color: var(--c-ink);
}
.tier__price {
  font-family: var(--font-num);
  font-size: .8125rem;
  color: var(--c-primary-ink);
  background: var(--c-primary-light);
  border-radius: 4px;
  padding: 3px 8px;
  white-space: nowrap;
}
.tier__fit {
  margin: 0;
  font-size: .875rem;
  line-height: 1.65;
  color: var(--c-text-soft);
}
.tier .spec { margin: 0; }
.tier .spec th,
.tier .spec td { padding: 7px 8px; font-size: .8125rem; }
.tier .spec th { width: 30%; }

/* 33.5 术语词典 */
.gloss-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 34px;
  padding: 14px 0;
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}
.gloss-nav__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  font-size: .875rem;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border: 1px solid transparent;
  border-radius: 999px;
  text-decoration: none;
  transition: background .2s, color .2s, border-color .2s;
}
.gloss-nav__item:hover,
.gloss-nav__item:focus-visible {
  color: var(--c-primary-ink);
  background: var(--c-primary-light);
  border-color: rgba(25, 211, 174, .4);
}
.gloss-nav__item em {
  font-style: normal;
  font-family: var(--font-num);
  font-size: .75rem;
  color: var(--c-text-soft);
}
.gloss__group { margin-bottom: 46px; scroll-margin-top: 90px; }
.gloss__group-head { margin-bottom: 16px; }
.gloss__group-head h2 {
  font-size: 1.375rem;
  margin: 0 0 6px;
  color: var(--c-ink);
}
.gloss__group-head p {
  margin: 0;
  font-size: .875rem;
  color: var(--c-text-soft);
}
.gloss__list { margin: 0; }
.gloss__item {
  padding: 20px 0;
  border-top: 1px solid var(--c-line);
}
.gloss__item:last-child { border-bottom: 1px solid var(--c-line); }
.gloss__item dt {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.gloss__term {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--c-ink);
}
.gloss__en {
  font-family: var(--font-num);
  font-size: .75rem;
  color: var(--c-text-soft);
  letter-spacing: .02em;
}
.gloss__item dd { margin: 0; }
.gloss__item dd p {
  margin: 0 0 8px;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--c-text);
}
.gloss__item dd p:last-child { margin-bottom: 0; }
.gloss__label {
  display: inline-block;
  min-width: 68px;
  margin-right: 10px;
  font-size: .75rem;
  font-weight: 700;
  color: var(--c-primary-ink);
  letter-spacing: .02em;
}
.gloss__label--warn { color: #b45309; }
.gloss__def { color: var(--c-text) !important; }
.gloss__why,
.gloss__confuse { color: var(--c-text-soft) !important; font-size: .9rem !important; }

/* 33.6 故障自检库 */
.ts__group { margin-bottom: 42px; scroll-margin-top: 90px; }
.ts {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: #fff;
  margin-bottom: 10px;
  overflow: hidden;
}
.ts[open] { border-color: rgba(25, 211, 174, .45); }
.ts summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  background: var(--c-bg-soft);
  transition: background .2s;
}
.ts summary::-webkit-details-marker { display: none; }
.ts summary:hover { background: var(--c-primary-light); }
.ts summary:focus-visible { outline: 2px solid var(--c-primary); outline-offset: -3px; }
.ts__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--c-ink);
  line-height: 1.5;
  flex: 1 1 auto;
  position: relative;
  padding-left: 22px;
}
.ts__title::before {
  content: "+";
  position: absolute;
  left: 0;
  top: -1px;
  font-family: var(--font-num);
  font-size: 1.125rem;
  color: var(--c-primary-ink);
}
.ts[open] .ts__title::before { content: "−"; }
.ts__level {
  flex: 0 0 auto;
  font-size: .75rem;
  color: #b45309;
  background: #fff7ed;
  border-radius: 4px;
  padding: 3px 9px;
  white-space: nowrap;
}
.ts__body { padding: 8px 18px 20px; }
.ts__block { margin-top: 18px; }
.ts__block h3 {
  font-size: .9375rem;
  margin: 0 0 10px;
  color: var(--c-primary-ink);
}
.ts__body .check-list { margin: 0; }
.ts__steps { list-style: none; margin: 0; padding: 0; counter-reset: ts; }
.ts__steps li {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--c-line);
}
.ts__steps li:last-child { border-bottom: 0; padding-bottom: 0; }
.ts__num {
  flex: 0 0 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary-ink);
  font-family: var(--font-num);
  font-size: .75rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ts__steps h4 {
  font-size: .9375rem;
  margin: 0 0 4px;
  color: var(--c-ink);
}
.ts__steps p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-text);
}
.ts__dont { list-style: none; margin: 0; padding: 0; }
.ts__dont li {
  position: relative;
  padding: 6px 0 6px 22px;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--c-text);
}
.ts__dont li::before {
  content: "×";
  position: absolute;
  left: 2px;
  top: 5px;
  color: #d9480f;
  font-weight: 700;
}
.ts__escalate {
  margin: 18px 0 0;
  padding: 12px 14px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-text);
}
.ts__escalate strong { color: var(--c-primary-ink); }

/* 33.7 产品横向对比 */
.cmp__group {
  padding: 30px 0 10px;
  margin-bottom: 30px;
  border-top: 1px solid var(--c-line);
  scroll-margin-top: 90px;
}
.cmp__group:first-child { border-top: 0; padding-top: 0; }
.cmp__scene {
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 0 0 20px;
}
.cmp__scene strong { color: var(--c-ink); }
.cmp__plans {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}
.cmp__plan {
  padding: 18px 18px 16px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
}
.cmp__plan-key {
  font-family: var(--font-num);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--c-primary-ink);
}
.cmp__plan h3 {
  font-size: 1.0625rem;
  margin: 6px 0 4px;
  color: var(--c-ink);
}
.cmp__plan-tag {
  margin: 0 0 8px;
  font-size: .8125rem;
  color: var(--c-text-soft);
}
.cmp__plan-price {
  margin: 0;
  font-family: var(--font-num);
  font-size: .9375rem;
  font-weight: 700;
  color: var(--c-ink);
}
.cmp__table { min-width: 720px; }
.cmp__table th[scope="row"] {
  width: 16%;
  font-weight: 600;
  color: var(--c-ink);
  background: var(--c-bg-soft);
}
.cmp__table td { vertical-align: top; }
.cmp__table .cmp__why {
  width: 34%;
  color: var(--c-text-soft);
  font-size: .875rem;
}
.cmp__table--cost th[scope="row"] { width: 26%; }
.cmp__h3 {
  font-size: 1.0625rem;
  margin: 28px 0 12px;
  color: var(--c-ink);
}
.cmp__tip {
  margin: 20px 0 0;
  padding: 16px 18px;
  background: var(--c-primary-light);
  border-radius: var(--radius-sm);
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--c-text);
}
.cmp__tip strong { color: var(--c-primary-ink); }

/* 33.8 站内搜索 */
.search {
  margin: 0 0 18px;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.search__label {
  display: block;
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--c-text-soft);
  margin-bottom: 10px;
}
.search__row { display: flex; gap: 10px; }
.search__input {
  flex: 1 1 auto;
  min-width: 0;
  height: 48px;
  padding: 0 16px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--c-ink);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.search__input:focus {
  outline: none;
  background: #fff;
  border-color: var(--c-primary);
  box-shadow: var(--ring);
}
.search__btn { flex: 0 0 auto; height: 48px; padding: 0 26px; }
.search__hint {
  margin: 10px 0 0;
  font-size: .8125rem;
  color: var(--c-text-soft);
}
.search-hot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: .875rem;
}
.search-hot__label { color: var(--c-text-soft); }
.search-hot__item {
  padding: 5px 12px;
  background: var(--c-bg-soft);
  border-radius: 999px;
  color: var(--c-text);
  text-decoration: none;
  transition: background .2s, color .2s;
}
.search-hot__item:hover,
.search-hot__item:focus-visible {
  background: var(--c-primary-light);
  color: var(--c-primary-ink);
}
.search__status {
  font-size: .875rem;
  color: var(--c-text-soft);
  margin-bottom: 12px;
}
.search__status:empty { margin-bottom: 0; }
.search__results { display: grid; gap: 2px; }
.sr {
  display: block;
  padding: 20px 4px;
  border-bottom: 1px solid var(--c-line);
  text-decoration: none;
  color: inherit;
  transition: background .18s;
}
.sr:hover, .sr:focus-visible {
  background: var(--c-bg-soft);
  outline: none;
}
.sr__title {
  display: block;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--c-primary-ink);
  line-height: 1.5;
  margin-bottom: 6px;
}
.sr:hover .sr__title { text-decoration: underline; }
.sr__url {
  display: block;
  font-family: var(--font-num);
  font-size: .75rem;
  color: var(--c-text-soft);
  margin-bottom: 8px;
  word-break: break-all;
}
.sr__snippet {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--c-text);
}
.sr mark {
  background: rgba(216, 255, 79, .55);
  color: inherit;
  padding: 0 2px;
  border-radius: 2px;
}
.search__fallback { margin-top: 30px; display: none; }
.search__fallback.is-on { display: block; }
.search__fallback h2 {
  font-size: 1.125rem;
  margin: 0 0 8px;
  color: var(--c-ink);
}
.search__fallback p {
  margin: 0 0 14px;
  font-size: .9375rem;
  color: var(--c-text-soft);
}

/* 33.9 导航搜索入口 */
.nav__search {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-right: 10px;
  border-radius: var(--radius-sm);
  color: var(--c-text);
  transition: background .2s, color .2s;
}
.nav__search:hover,
.nav__search:focus-visible {
  background: var(--c-primary-light);
  color: var(--c-primary-ink);
}
.nav__search svg { display: block; }

/* 33.10 响应式：900 与 640 两档 */
@media (max-width: 900px) {
  .caselist,
  .solgrid,
  .cmp__plans { grid-template-columns: 1fr; }
  .tier-grid { grid-template-columns: 1fr; }
  .gloss__item dt { flex-direction: column; gap: 2px; }
  .ts summary { padding: 14px 14px; }
  .ts__body { padding: 6px 14px 18px; }
  .ts__level { display: none; }
  .cmp__table { min-width: 640px; }
}

@media (max-width: 640px) {
  .search__row { flex-wrap: wrap; }
  .search__btn { width: 100%; }
  .caselist__item,
  .solgrid__item { padding: 20px 18px 18px; }
  .caselist__facts { grid-template-columns: 1fr; }
  .gloss-nav { gap: 6px; }
  .gloss-nav__item { padding: 6px 11px; font-size: .8125rem; }
  .nav__search { width: 34px; height: 34px; margin-right: 4px; }
  .timeline__item { padding-left: 22px; }
}

/* 33.11 移动端菜单里的搜索入口：桌面端隐藏（桌面用导航右侧图标） */
.menu__item--mob { display: none; }

@media (max-width: 1180px) {
  .menu__item--mob { display: block; }
  .menu__item--mob a { color: var(--c-primary-ink); font-weight: 600; }
}

/* 33.12 案例标签配色修正
   .case__tag 原本用 --c-accent-dark，而该变量在视觉重构后被改为荧光黄绿 #a8cc25，
   在浅青底上对比度约 1.3:1，几乎不可读。浅底文字统一回到 --c-primary-ink。 */
.case__tag {
  color: var(--c-primary-ink);
  background: var(--c-primary-light);
}

/* 33.13 术语标签后补冒号，避免「为什么重要」与正文粘连 */
.gloss__label::after { content: "："; }

/* ==========================================================================
   34. 页脚重排（2026-11-02）
   问题：原为 4 列，第 4 列同时塞「联系方式」8 行 + 支持链接 10 项，列高 18 行，
        前三列各 6 项，导致大面积留白、底部锯齿，两块列表的间距还因内联
        margin-top:14px 而与其他列不一致。
   方案：拆成 5 列（品牌 / 产品 / 关于 / 资源 / 联系），法务链接降到最底行，
        联系方式改为「标签 + 值」两栏对齐，去掉 <br> 硬换行造成的参差。
   ========================================================================== */

.footer { padding: 56px 0 0; }

.footer__grid {
  display: grid;
  grid-template-columns: 1.45fr .88fr .88fr .96fr 1.32fr;
  gap: 40px 30px;
  padding-bottom: 34px;
  align-items: start;
}

.footer__grid h4 { margin-bottom: 14px; }

.footer__list { list-style: none; margin: 0; padding: 0; }
.footer__list li { margin-bottom: 10px; }
.footer__list li:last-child { margin-bottom: 0; }
.footer__list a { display: inline-block; color: rgba(255, 255, 255, .82); font-size: .875rem; line-height: 1.5; }

/* 品牌列：简介压到 13px，行高放开；理念单独一条细分割线 */
.footer__brand p { margin: 0; color: rgba(255, 255, 255, .62); font-size: .8125rem; line-height: 1.85; }
.footer__brand .footer__slogan {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  color: rgba(255, 255, 255, .52);
  letter-spacing: .04em;
}

/* 联系方式：两栏对齐，长邮箱允许断行，不再用 <br> 排 */
.footer__info { list-style: none; margin: 0; padding: 0; }
.footer__info li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  column-gap: 10px;
  margin-bottom: 9px;
  font-size: .8125rem;
  line-height: 1.6;
}
.footer__info li:last-child { margin-bottom: 0; }
.footer__k { color: rgba(255, 255, 255, .55); }
.footer__v { color: rgba(255, 255, 255, .8); overflow-wrap: anywhere; }
.footer__v a { color: rgba(255, 255, 255, .88); }

/* 底部：版权在左、法务在右，中间竖线分隔 */
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 28px;
  padding: 18px 0 22px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: .75rem;
}
.footer__copy { margin: 0; color: rgba(255, 255, 255, .55); line-height: 1.7; }
.footer__copy a { color: rgba(255, 255, 255, .6); }

.footer__legal {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
}
.footer__legal li { display: flex; align-items: center; }
.footer__legal li + li::before {
  content: "";
  width: 1px;
  height: 10px;
  background: rgba(255, 255, 255, .2);
  margin: 0 11px;
}
.footer__legal a { color: rgba(255, 255, 255, .58); font-size: .75rem; }
.footer__legal a:hover { color: var(--c-accent); }

/* 1180 以下：品牌横跨一行，其余四列均分，避免五列挤压换行 */
@media (max-width: 1180px) {
  .footer__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px 24px; }
  .footer__brand { grid-column: 1 / -1; padding-bottom: 22px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
  .footer__brand .footer__slogan { margin-top: 12px; padding-top: 0; border-top: 0; }
}

@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px 24px; }
}

@media (max-width: 860px) {
  .footer { padding-top: 44px; }
  .footer__grid { grid-template-columns: 1fr; gap: 26px; padding-bottom: 26px; }
  /* 手机端链接分两栏排，页脚高度砍半，又不至于窄到换行 */
  .footer__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 16px; }
  .footer__bottom { justify-content: flex-start; }
  .footer__legal li + li::before { margin: 0 9px; }
}

/* 34.1 底部条避让右下角「返回顶部」浮层（fixed 元素会压在 llms.txt 上） */
@media (min-width: 861px) {
  .footer__bottom { padding-right: 76px; }
}
@media (max-width: 860px) {
  .footer__bottom { padding-bottom: 84px; }
}

/* 34.2 页脚断点微调 */
.nowrap { white-space: nowrap; }

/* 1024 仍保持四列：每列约 226px，足够放下「GPU 人工智能服务器」，降到两列过于松散 */
@media (min-width: 861px) and (max-width: 1024px) {
  .footer__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* 品牌横跨整行时限制行宽，避免一句话拉满 1000px */
@media (max-width: 1180px) {
  .footer__brand p { max-width: 62ch; }
}

/* 34.3 1024 档给联系方式列多分一点宽度
   均分时每列 226px，减去标签 38px 只剩 178px，
   放不下 info.hongcheng0769@gmail.com（约 200px），会断成 ...@gmail.c / om，复制按钮也会掉行。 */
@media (min-width: 861px) and (max-width: 1024px) {
  .footer__grid { grid-template-columns: .88fr .88fr .92fr 1.32fr; }
}


/* ==========================================================================
   35. 企业 LOGO 位图（2026-11 品牌标识接入）
   页头用透明底图形标 + 文字；页脚用完整锁定版（中英文全称），
   因原始标识为白底深蓝，深色页脚上须加白色托底，否则深蓝在 #071016 上不可读。
   ========================================================================== */
.logo__img {
  display: block;
  width: auto;
  height: 40px;
  flex-shrink: 0;
}

.footer__logo {
  display: inline-block;
  margin-bottom: 16px;
  padding: 9px 11px;
  border-radius: 6px;
  background: #fff;
  line-height: 0;
}
.footer__logo img { display: block; width: 156px; height: auto; }
.footer__logo:hover { background: #fff; }

@media (max-width: 860px) {
  .logo__img { height: 34px; }
  .footer__logo { margin-bottom: 14px; padding: 8px 10px; }
  .footer__logo img { width: 168px; }
}