/* =========================================================
   GEO 官网 · 共享样式表
   设计：移动端优先（mobile-first），断点 768 / 1024
   配色：靛紫渐变 + 青色点缀，科技 AI 感，浅色主题
   ========================================================= */

:root {
  --c-primary: #4f46e5;
  --c-primary-dark: #4338ca;
  --c-violet: #7c3aed;
  --c-cyan: #06b6d4;
  --c-ink: #0f172a;
  --c-ink-2: #1e293b;
  --c-muted: #64748b;
  --c-line: #e2e8f0;
  --c-bg: #ffffff;
  --c-bg-soft: #f8fafc;
  --c-bg-dark: #0b1120;
  --grad: linear-gradient(120deg, #4f46e5 0%, #7c3aed 55%, #06b6d4 120%);
  --grad-soft: linear-gradient(120deg, rgba(79,70,229,.10), rgba(6,182,212,.10));
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.08);
  --shadow: 0 10px 30px rgba(15,23,42,.08);
  --shadow-lg: 0 24px 60px rgba(79,70,229,.18);
  --container: 1180px;
  --header-h: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--c-ink-2);
  background: var(--c-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.25; margin: 0 0 .5em; font-weight: 800; letter-spacing: -.01em; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-weight: 700; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 8px 20px rgba(79,70,229,.30); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(79,70,229,.40); }
.btn-ghost { background: #fff; color: var(--c-ink); border-color: var(--c-line); }
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-light { background: #fff; color: var(--c-primary); }
.btn-light:hover { transform: translateY(-2px); }
.btn-block { width: 100%; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(12px); border-bottom: 1px solid var(--c-line);
  transition: box-shadow .2s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; }
.brand-mark {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 11px;
  background: var(--grad); color: #fff; font-weight: 900; letter-spacing: .5px; font-size: 15px;
  box-shadow: 0 6px 16px rgba(79,70,229,.35);
}
.brand-text { display: inline; color: var(--c-ink); font-size: 15px; }
.nav-menu { display: none; align-items: center; gap: 6px; }
.nav-menu a { padding: 9px 14px; border-radius: 10px; font-weight: 600; color: var(--c-ink-2); font-size: 15px; }
.nav-menu a:hover { color: var(--c-primary); background: var(--c-bg-soft); }
.nav-menu a.active { color: var(--c-primary); }
.nav-toggle { display: inline-flex; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--c-ink); border-radius: 2px; transition: .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端展开菜单 */
.mobile-menu {
  display: none; flex-direction: column; gap: 4px; padding: 12px 20px 20px;
  background: #fff; border-bottom: 1px solid var(--c-line);
}
.mobile-menu.open { display: flex; }
.mobile-menu a { padding: 12px 8px; border-radius: 10px; font-weight: 600; color: var(--c-ink-2); }
.mobile-menu a:hover { background: var(--c-bg-soft); }
.mobile-menu .btn { margin-top: 8px; }

/* ---------- 通用区块 ---------- */
.section { padding: 64px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-dark {
  background: radial-gradient(1200px 600px at 80% -10%, rgba(124,58,237,.35), transparent 60%),
              radial-gradient(900px 500px at -10% 10%, rgba(6,182,212,.25), transparent 55%),
              var(--c-bg-dark);
  color: #e2e8f0;
}
.section-dark h1, .section-dark h2, .section-dark h3 { color: #fff; }
.section-dark p { color: #cbd5e1; }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase;
  color: var(--c-primary); background: var(--grad-soft); padding: 6px 14px; border-radius: 999px; margin-bottom: 16px;
}
.section-head { max-width: 720px; margin: 0 auto 44px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 5vw, 40px); }
.section-head p { color: var(--c-muted); font-size: 17px; }
.section-dark .section-head p { color: #cbd5e1; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 72px 0 80px; }
.hero::before {
  content: ""; position: absolute; inset: 0; background:
    radial-gradient(700px 360px at 85% 0%, rgba(124,58,237,.16), transparent 60%),
    radial-gradient(620px 320px at 0% 20%, rgba(6,182,212,.14), transparent 55%);
  z-index: -1;
}
.hero-grid { display: grid; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(30px, 7vw, 52px); }
.hero .lead { font-size: clamp(16px, 2.4vw, 19px); color: var(--c-muted); max-width: 560px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.hero-tags span {
  font-size: 13px; color: var(--c-ink-2); background: #fff; border: 1px solid var(--c-line);
  padding: 6px 12px; border-radius: 999px; font-weight: 600;
}
.hero-card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow); position: relative; overflow: hidden;
}
.hero-card::after {
  content: ""; position: absolute; right: -40px; top: -40px; width: 160px; height: 160px; border-radius: 50%;
  background: var(--grad-soft);
}
.hero-card h3 { font-size: 17px; }
.hero-stat { display: flex; gap: 18px; margin-top: 14px; flex-wrap: wrap; }
.hero-stat .num { font-size: 30px; font-weight: 900; color: var(--c-primary); line-height: 1; }
.hero-stat .lab { font-size: 12.5px; color: var(--c-muted); }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }

.card {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow-sm); transition: transform .18s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c7d2fe; }
.card .ico {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad-soft); color: var(--c-primary); font-size: 22px; margin-bottom: 14px;
}
.card h3 { font-size: 18px; }
.card p { color: var(--c-muted); font-size: 15px; margin: 0; }

/* 特性列表卡片（带勾） */
.feature-list li { display: flex; gap: 10px; padding: 8px 0; color: var(--c-ink-2); }
.feature-list li::before { content: "✓"; color: var(--c-cyan); font-weight: 900; }

/* ---------- 数据看板 ---------- */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.stat {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius);
  padding: 22px; text-align: center;
}
.stat .num { font-size: clamp(28px, 6vw, 40px); font-weight: 900; color: #fff;
  background: linear-gradient(120deg,#a5b4fc,#67e8f9); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat .lab { font-size: 13.5px; color: #cbd5e1; margin-top: 4px; }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; gap: 18px; counter-reset: step; }
.step {
  display: flex; gap: 16px; align-items: flex-start; background: #fff; border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm);
}
.step .badge {
  flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad); color: #fff; font-weight: 900; font-size: 18px;
}
.step h3 { font-size: 17px; margin-bottom: 4px; }
.step p { margin: 0; color: var(--c-muted); font-size: 14.5px; }

/* ---------- 能力层级（5层） ---------- */
.layers { display: grid; gap: 14px; }
.layer {
  display: flex; gap: 14px; align-items: center; background: #fff; border: 1px solid var(--c-line);
  border-radius: 14px; padding: 16px 18px; box-shadow: var(--shadow-sm); position: relative;
}
.layer .tag { flex: 0 0 auto; font-weight: 900; font-size: 14px; color: #fff; background: var(--c-ink-2);
  padding: 6px 10px; border-radius: 8px; min-width: 54px; text-align: center; }
.layer.geo .tag { background: var(--grad); }
.layer .txt b { color: var(--c-ink); }
.layer .txt span { color: var(--c-muted); font-size: 13.5px; }

/* ---------- 案例 ---------- */
.case {
  border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; background: #fff;
  box-shadow: var(--shadow-sm); transition: transform .18s ease, box-shadow .2s ease;
}
.case:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.case .thumb { height: 150px; background: var(--grad-soft); display: grid; place-items: center; font-size: 34px; }

/* 图标已由 emoji 改为内联 SVG（编码无关，永不变 ?）；统一尺寸 */
.ico svg, .thumb svg { width: 26px; height: 26px; }
.ico-svg-inline { width: 1em; height: 1em; vertical-align: -0.15em; }
.case .body { padding: 20px; }
.case .body h3 { font-size: 17px; }
.case .body p { color: var(--c-muted); font-size: 14px; margin: 0 0 12px; }
.case .metric { display: flex; gap: 16px; }
.case .metric b { display: block; font-size: 22px; color: var(--c-primary); }
.case .metric span { font-size: 12px; color: var(--c-muted); }

/* ---------- 平台 logo 条 ---------- */
.platforms { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.platforms span {
  background: #fff; border: 1px solid var(--c-line); border-radius: 10px; padding: 8px 14px;
  font-size: 13.5px; font-weight: 700; color: var(--c-ink-2);
}

/* ---------- 栏目页：筛选 tabs ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 30px; }
.tab {
  border: 1px solid var(--c-line); background: #fff; color: var(--c-ink-2); padding: 9px 18px;
  border-radius: 999px; font-weight: 700; font-size: 14px; cursor: pointer; transition: .2s;
}
.tab.active, .tab:hover { background: var(--grad); color: #fff; border-color: transparent; }

.page-hero { background: var(--grad-soft); border-bottom: 1px solid var(--c-line); padding: 56px 0 48px; }
.page-hero h1 { font-size: clamp(28px, 6vw, 42px); }
.page-hero p { color: var(--c-muted); font-size: 17px; max-width: 640px; }

/* 栏目页布局：主内容 + 侧边栏 */
.col-layout { display: grid; gap: 32px; }
.sidebar { display: grid; gap: 22px; }

.widget { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.widget h4 { font-size: 16px; margin-bottom: 14px; }
.widget a.post { display: block; padding: 12px 0; border-top: 1px dashed var(--c-line); color: var(--c-ink-2); font-weight: 600; }
.widget a.post:first-of-type { border-top: 0; }
.widget a.post:hover { color: var(--c-primary); }
.widget a.post span { display: block; font-size: 12.5px; color: var(--c-muted); font-weight: 400; }
.contact-card { background: var(--grad); color: #fff; border: 0; }
.contact-card h4 { color: #fff; }
.contact-card p { color: rgba(255,255,255,.9); font-size: 14px; }
.contact-card .btn-light { margin-top: 10px; }

/* 服务/方案卡片（栏目页） */
.solution { display: flex; flex-direction: column; gap: 12px; }
.solution .ico { width: 52px; height: 52px; }
.solution h3 { font-size: 19px; }
.solution .meta { display: flex; flex-wrap: wrap; gap: 8px; }
.solution .meta span { font-size: 12.5px; color: var(--c-primary); background: var(--grad-soft); padding: 4px 10px; border-radius: 999px; font-weight: 700; }
.solution .more { margin-top: auto; color: var(--c-primary); font-weight: 800; font-size: 14px; }

/* ---------- 详情页 ---------- */
.breadcrumb { font-size: 13.5px; color: var(--c-muted); padding: 18px 0 0; }
.breadcrumb a:hover { color: var(--c-primary); }
.breadcrumb span { margin: 0 8px; }
.detail-layout { display: grid; gap: 36px; padding: 28px 0 64px; }
.article { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.article .meta { font-size: 13.5px; color: var(--c-muted); display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 18px; }
.article h1 { font-size: clamp(26px, 5vw, 38px); }
.article h2 { font-size: 23px; margin-top: 34px; }
.article h3 { font-size: 18px; margin-top: 24px; }
.article p, .article li { color: #334155; font-size: 16px; }
.article ul.bullets { padding-left: 0; }
.article ul.bullets li { position: relative; padding-left: 26px; margin: 8px 0; }
.article ul.bullets li::before { content: "▹"; position: absolute; left: 4px; color: var(--c-primary); font-weight: 900; }
.article blockquote {
  margin: 22px 0; padding: 16px 20px; border-left: 4px solid var(--c-primary);
  background: var(--grad-soft); border-radius: 0 12px 12px 0; color: var(--c-ink-2); font-weight: 600;
}
.article table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14.5px; }
.article th, .article td { border: 1px solid var(--c-line); padding: 11px 12px; text-align: left; }
.article th { background: var(--c-bg-soft); color: var(--c-ink); font-weight: 800; }
.callout {
  background: var(--grad-soft); border: 1px solid #c7d2fe; border-radius: 14px; padding: 20px 22px; margin: 22px 0;
}
.callout b { color: var(--c-primary); }
.toc { background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: 14px; padding: 18px 20px; }
.toc h4 { font-size: 15px; margin-bottom: 10px; }
.toc a { display: block; padding: 6px 0; color: var(--c-muted); font-size: 14px; }
.toc a:hover { color: var(--c-primary); }
.pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 26px; }
.pager a { flex: 1; border: 1px solid var(--c-line); border-radius: 12px; padding: 14px 16px; font-size: 14px; font-weight: 600; color: var(--c-ink-2); }
.pager a:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pager .dir { font-size: 12px; color: var(--c-muted); font-weight: 400; }

/* ---------- 关于我们 ---------- */
.timeline { display: grid; gap: 16px; }
.tl { display: grid; grid-template-columns: 70px 1fr; gap: 16px; align-items: start; }
.tl .yr { font-weight: 900; color: var(--c-primary); font-size: 17px; }
.tl .ev { background: #fff; border: 1px solid var(--c-line); border-radius: 12px; padding: 16px 18px; box-shadow: var(--shadow-sm); }
.tl .ev b { color: var(--c-ink); }
.tl .ev span { color: var(--c-muted); font-size: 14px; }
.team { display: grid; gap: 18px; }
.member { text-align: center; background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); }
.member .avatar { width: 76px; height: 76px; border-radius: 50%; margin: 0 auto 12px; background: var(--grad); color: #fff; display: grid; place-items: center; font-size: 26px; font-weight: 900; }
.member h4 { font-size: 16px; margin-bottom: 2px; }
.member span { font-size: 13px; color: var(--c-muted); }
.value { display: grid; gap: 18px; }
.value .card .ico { background: var(--grad); color: #fff; }

/* ---------- 联系我们 ---------- */
.contact-layout { display: grid; gap: 30px; }
.info-list li { display: flex; gap: 14px; align-items: flex-start; padding: 14px 0; border-bottom: 1px dashed var(--c-line); }
.info-list li:last-child { border-bottom: 0; }
.info-list .ico { flex: 0 0 auto; width: 42px; height: 42px; border-radius: 11px; background: var(--grad-soft); color: var(--c-primary); display: grid; place-items: center; font-size: 19px; }
.info-list b { color: var(--c-ink); display: block; font-size: 15px; }
.info-list span { color: var(--c-muted); font-size: 14px; }
.form-card { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 14px; font-weight: 700; color: var(--c-ink-2); margin-bottom: 6px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--c-line); border-radius: 10px; font-size: 15px;
  font-family: inherit; color: var(--c-ink-2); background: #fff; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 0; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(79,70,229,.15); }
.field textarea { resize: vertical; min-height: 110px; }
.field .err { color: #e11d48; font-size: 12.5px; margin-top: 5px; display: none; }
.field.invalid .err { display: block; }
.field.invalid input, .field.invalid textarea, .field.invalid select { border-color: #e11d48; }
.form-note { font-size: 12.5px; color: var(--c-muted); margin-top: 4px; }
.form-success { display: none; background: #ecfdf5; border: 1px solid #6ee7b7; color: #047857; border-radius: 12px; padding: 16px; font-weight: 600; margin-bottom: 16px; }
.form-success.show { display: block; }
.form-success.error { background: #fef2f2; border-color: #fca5a5; color: #b91c1c; }

.map {
  height: 280px; border-radius: var(--radius); border: 1px solid var(--c-line);
  background:
    linear-gradient(rgba(79,70,229,.06), rgba(79,70,229,.06)),
    repeating-linear-gradient(0deg, #eef2ff 0 24px, #f8fafc 24px 48px),
    repeating-linear-gradient(90deg, #eef2ff 0 24px, #f8fafc 24px 48px);
  display: grid; place-items: center; color: var(--c-muted); font-weight: 700; text-align: center;
}

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--c-line); border-radius: 12px; padding: 4px 18px; }
.faq summary { cursor: pointer; padding: 14px 0; font-weight: 700; color: var(--c-ink); list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; color: var(--c-primary); font-size: 22px; font-weight: 900; }
.faq details[open] summary::after { content: "−"; }
.faq p { padding: 0 0 14px; color: var(--c-muted); font-size: 14.5px; margin: 0; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--c-bg-dark); color: #cbd5e1; padding: 54px 0 26px; }
.footer-grid { display: grid; gap: 30px; grid-template-columns: 1fr; }
.footer-grid h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-grid a { display: block; padding: 5px 0; color: #94a3b8; font-size: 14px; }
.footer-grid a:hover { color: #fff; }
.footer-brand .brand-mark { margin-bottom: 12px; }
.footer-brand p { color: #94a3b8; font-size: 14px; max-width: 320px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 36px; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: 13px; color: #64748b; }
.footer-bottom a { color: #94a3b8; }

/* ---------- 返回顶部 ---------- */
.to-top {
  position: fixed; right: 18px; bottom: 18px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--grad); color: #fff; border: 0; cursor: pointer; font-size: 20px; box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none; transition: opacity .25s, transform .25s; z-index: 60;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { transform: translateY(-3px); }

/* 入场动画 */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============ 响应式：平板 ============ */
@media (min-width: 768px) {
  .container { padding: 0 28px; }
  .brand-text { display: inline; }
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(4, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .layers { grid-template-columns: repeat(2, 1fr); }
  .team { grid-template-columns: repeat(2, 1fr); }
  .value { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1fr; }
  .hero-grid { grid-template-columns: 1.1fr .9fr; }
  .col-layout { grid-template-columns: 1fr 320px; }
  .contact-layout { grid-template-columns: 1fr 1fr; }
  .map { height: 100%; min-height: 320px; }
}

/* ============ 响应式：桌面 ============ */
@media (min-width: 1024px) {
  .section { padding: 92px 0; }
  .nav-menu { display: flex; }
  .nav-toggle { display: none; }
  .mobile-menu { display: none !important; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .layers { grid-template-columns: 1fr; }
  .team { grid-template-columns: repeat(4, 1fr); }
  .value { grid-template-columns: repeat(4, 1fr); }
  .detail-layout { grid-template-columns: 1fr 300px; align-items: start; }
  .detail-layout .article { grid-column: 1; }
  .sidebar { grid-column: 2; position: sticky; top: 84px; }
}

/* 栏目导航标签(showclasstemp)生成的链接样式 */
.nav-menu a, .mobile-menu a, .footer-nav a { font-size:15px; color:#1f2937; text-decoration:none; }
.nav-menu a:hover, .mobile-menu a:hover, .footer-nav a:hover { color:#2f6df6; }
.footer-nav { display:flex; flex-direction:column; gap:6px; }