/* ============================================================
   播客白板 官网样式
   配色：蓝（主） + 白（画布） + 橙（点缀）
   ============================================================ */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-deep: #1e3a8a;
  --primary-soft: #dbeafe;
  --accent: #f59e0b;
  --accent-dark: #d97706;

  --bg: #ffffff;
  --bg-light: #f6f9fc;
  --bg-soft: #eef4fb;

  --text: #1f2937;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  --border: #e5e9f0;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .08);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, .10);
  --shadow-lg: 0 16px 48px rgba(37, 99, 235, .16);

  --radius: 14px;
  --radius-lg: 20px;

  --font: "PingFang SC", "Microsoft YaHei", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;

  --maxw: 1140px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ============ 顶部导航 ============ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-deep);
  letter-spacing: .5px;
}

.logo .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), #3b82f6);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 17px;
  box-shadow: var(--shadow-sm);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-menu a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--text-muted);
  border-radius: 9px;
  transition: all .18s ease;
}

.nav-menu a:hover { color: var(--primary); background: var(--primary-soft); }
.nav-menu a.active { color: var(--primary); font-weight: 600; background: var(--primary-soft); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .18s ease;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, .32);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(37, 99, 235, .4); }

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-soft); }

.btn-lg { padding: 15px 34px; font-size: 17px; border-radius: 12px; }
.btn-white { background: #fff; color: var(--primary-deep); box-shadow: var(--shadow-md); }
.btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border: none; background: transparent;
  cursor: pointer;
  flex-direction: column;
  justify-content: center; align-items: center; gap: 5px;
}
.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .2s ease;
}

/* ============ Hero ============ */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(59, 130, 246, .18), transparent 60%),
    radial-gradient(900px 400px at 10% 110%, rgba(245, 158, 11, .12), transparent 55%),
    linear-gradient(180deg, #f2f7ff 0%, #ffffff 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
  padding: 84px 24px 96px;
  max-width: var(--maxw);
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 15px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--primary);
  font-size: 13.5px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.hero h1 {
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.18;
  font-weight: 800;
  color: var(--text);
  margin: 20px 0 18px;
  letter-spacing: .5px;
}

.hero h1 .hl {
  background: linear-gradient(120deg, var(--primary), #60a5fa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 540px;
  margin-bottom: 34px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 42px;
  margin-top: 46px;
}
.hero-stats .stat b { display: block; font-size: 26px; color: var(--primary-deep); }
.hero-stats .stat span { font-size: 14px; color: var(--text-muted); }

.hero-visual {
  position: relative;
}
.hero-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}
.hero-visual::after {
  content: "";
  position: absolute;
  inset: 24px -14px -14px 24px;
  background: linear-gradient(135deg, rgba(37,99,235,.14), rgba(245,158,11,.10));
  border-radius: var(--radius-lg);
  z-index: -1;
}

/* ============ 通用区块 ============ */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-light); }

.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(26px, 3.5vw, 36px); font-weight: 800; margin-bottom: 14px; }
.section-head p { font-size: 16.5px; color: var(--text-muted); }

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

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: all .22s ease;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }

.card .icon {
  width: 52px; height: 52px;
  border-radius: 13px;
  display: grid; place-items: center;
  font-size: 24px;
  margin-bottom: 18px;
  background: var(--primary-soft);
}
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-muted); }

/* 特性列表（图标 + 文字横排） */
.feature-list { display: grid; gap: 20px; }
.feature-item {
  display: flex; gap: 18px; align-items: flex-start;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  transition: all .2s ease;
}
.feature-item:hover { box-shadow: var(--shadow-md); transform: translateX(4px); }
.feature-item .icon {
  flex: 0 0 auto;
  width: 48px; height: 48px; border-radius: 12px;
  display: grid; place-items: center; font-size: 22px;
  background: var(--primary-soft);
}
.feature-item h4 { font-size: 16.5px; font-weight: 700; margin-bottom: 6px; }
.feature-item p { font-size: 14.5px; color: var(--text-muted); }

/* ============ 对比区（传统方式 vs 播客白板） ============ */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 940px;
  margin: 0 auto;
}

.compare-col {
  border-radius: var(--radius);
  padding: 30px 32px;
}

.compare-col.old {
  background: #f8fafc;
  border: 1px solid var(--border);
}

.compare-col.new {
  background: linear-gradient(160deg, #eff6ff, #ffffff);
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-md);
}

.compare-col h3 {
  font-size: 17px;
  font-weight: 800;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 9px;
}

.compare-col.old h3 { color: var(--text-light); }
.compare-col.new h3 { color: var(--primary-deep); }

.compare-col ul li {
  padding: 11px 0 11px 26px;
  font-size: 14.5px;
  color: var(--text-muted);
  position: relative;
  border-bottom: 1px dashed var(--border);
}

.compare-col ul li:last-child { border-bottom: none; }

.compare-col.old ul li::before {
  content: "✕";
  position: absolute;
  left: 2px; top: 11px;
  color: #cbd5e1;
  font-weight: 700;
}

.compare-col.new ul li::before {
  content: "✓";
  position: absolute;
  left: 2px; top: 11px;
  color: var(--primary);
  font-weight: 700;
}

/* ============ 两种模式 ============ */
.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.mode-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 34px;
  transition: all .22s ease;
}

.mode-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }

.mode-card .badge {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.mode-card.pro .badge { background: var(--primary-soft); color: var(--primary); }
.mode-card.eco .badge { background: #dcfce7; color: #15803d; }

.mode-card h3 { font-size: 21px; font-weight: 800; margin-bottom: 10px; }
.mode-card > p { font-size: 14.5px; color: var(--text-muted); margin-bottom: 18px; }
.mode-card ul li {
  position: relative;
  padding: 6px 0 6px 22px;
  font-size: 14px;
  color: var(--text-muted);
}
.mode-card ul li::before {
  content: "•";
  position: absolute; left: 4px;
  color: var(--primary);
  font-weight: 700;
}

/* ============ 产品/截图 ============ */
.screenshot-block { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; margin-bottom: 48px; }
.screenshot-block img {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
.screenshot-block .txt h3 { font-size: 22px; font-weight: 800; margin-bottom: 12px; }
.screenshot-block .txt p { color: var(--text-muted); font-size: 15px; }
.screenshot-block.reverse .media { order: 2; }

/* ============ 会员/价格 ============ */
.price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.price-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 30px;
  text-align: center; position: relative;
  transition: all .22s ease;
}
.price-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.price-card.featured {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
}
.price-card .tag {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff; font-size: 12.5px; font-weight: 700;
  padding: 4px 14px; border-radius: 999px;
}
.price-card .name { font-size: 17px; font-weight: 700; color: var(--text-muted); }
.price-card .price { font-size: 44px; font-weight: 800; color: var(--primary-deep); margin: 12px 0 4px; }
.price-card .price small { font-size: 15px; font-weight: 600; color: var(--text-muted); }
.price-card .per { font-size: 13px; color: var(--text-light); margin-bottom: 22px; }
.price-card ul { text-align: left; margin-bottom: 28px; }
.price-card ul li {
  padding: 8px 0 8px 26px; font-size: 14.5px; color: var(--text-muted);
  position: relative; border-bottom: 1px dashed var(--border);
}
.price-card ul li::before {
  content: "✓"; position: absolute; left: 2px; top: 8px;
  color: var(--primary); font-weight: 700;
}

/* ============ 下载页 ============ */
.download-hero {
  text-align: center; padding: 72px 24px 48px;
  background: linear-gradient(180deg, #f2f7ff, #fff);
}
.download-hero h1 { font-size: clamp(30px, 4.5vw, 46px); font-weight: 800; margin-bottom: 14px; }
.download-hero p { color: var(--text-muted); font-size: 17px; max-width: 620px; margin: 0 auto 32px; }
.download-box {
  max-width: 720px; margin: 0 auto; text-align: left;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-md);
}
.download-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
.download-row:last-child { border-bottom: none; }
.download-row .info b { display: block; font-size: 16px; }
.download-row .info span { font-size: 13.5px; color: var(--text-muted); }

.requirements {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
  margin-top: 24px;
}
.requirements .req {
  background: var(--bg-light); border-radius: 12px; padding: 16px 20px;
}
.requirements .req b { display: block; font-size: 14px; margin-bottom: 4px; color: var(--text); }
.requirements .req span { font-size: 13.5px; color: var(--text-muted); }

/* ============ 更新日志 ============ */
.timeline { position: relative; max-width: 760px; margin: 0 auto; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px;
  width: 2px; background: var(--border);
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item::before {
  content: ""; position: absolute; left: -34px; top: 6px;
  width: 16px; height: 16px; border-radius: 50%;
  background: #fff; border: 4px solid var(--primary);
}
.timeline-item .ver {
  display: inline-block; font-size: 14px; font-weight: 700;
  color: #fff; background: var(--primary);
  padding: 4px 14px; border-radius: 999px; margin-bottom: 10px;
}
.timeline-item .date { font-size: 13.5px; color: var(--text-light); margin-bottom: 10px; }
.timeline-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.timeline-item ul { margin-top: 8px; }
.timeline-item ul li {
  position: relative; padding: 4px 0 4px 22px;
  font-size: 14.5px; color: var(--text-muted);
}
.timeline-item ul li::before {
  content: "•"; position: absolute; left: 4px; color: var(--primary);
  font-weight: 700;
}

/* ============ 教程 ============ */
.guide-steps { counter-reset: step; }
.guide-step {
  display: flex; gap: 22px; margin-bottom: 34px;
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 26px;
}
.guide-step .num {
  counter-increment: step;
  flex: 0 0 auto; width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; font-weight: 800; font-size: 18px;
  display: grid; place-items: center;
}
.guide-step h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.guide-step p { font-size: 14.5px; color: var(--text-muted); }

/* ============ 联系 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info .item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 18px 0; border-bottom: 1px solid var(--border);
}
.contact-info .item .icon {
  flex: 0 0 auto; width: 44px; height: 44px; border-radius: 11px;
  background: var(--primary-soft); display: grid; place-items: center; font-size: 20px;
}
.contact-info .item b { display: block; font-size: 15px; margin-bottom: 3px; }
.contact-info .item span { font-size: 14px; color: var(--text-muted); }

.contact-form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 34px; box-shadow: var(--shadow-sm); }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 14px; font-size: 14.5px;
  border: 1px solid var(--border); border-radius: 10px;
  font-family: var(--font); transition: border .18s ease;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}
.form-group textarea { min-height: 120px; resize: vertical; }

/* ============ CTA 带 ============ */
.cta-band {
  background: linear-gradient(135deg, var(--primary-deep), var(--primary));
  color: #fff; text-align: center; padding: 72px 24px;
  border-radius: var(--radius-lg); margin: 0 auto;
  max-width: var(--maxw);
}
.cta-band h2 { font-size: clamp(24px, 3.5vw, 34px); font-weight: 800; margin-bottom: 14px; }
.cta-band p { font-size: 16px; opacity: .9; max-width: 560px; margin: 0 auto 30px; }

/* ============ 页脚 ============ */
.footer { background: #0f1d33; color: #cbd5e1; margin-top: 80px; }
.footer-inner {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px; padding: 56px 24px 40px; max-width: var(--maxw); margin: 0 auto;
}
.footer h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
.footer a { display: block; padding: 5px 0; font-size: 14px; color: #94a3b8; transition: color .15s ease; }
.footer a:hover { color: #fff; }
.footer .brand { font-size: 15px; color: #cbd5e1; line-height: 1.8; }
.footer .brand .logo { color: #fff; margin-bottom: 14px; }
.footer .brand .logo .logo-mark { background: linear-gradient(135deg, var(--primary), #60a5fa); }
.footer .brand .slogan { color: #94a3b8; font-size: 13.5px; margin-top: 12px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  text-align: center; padding: 22px 24px; font-size: 13px; color: #64748b;
}
.footer-bottom a { color: #94a3b8; }

/* ============ 动画 ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal { opacity: 0; }
.reveal.in { animation: fadeUp .6s ease forwards; }

/* ============ 响应式 ============ */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; padding: 60px 24px 70px; text-align: center; }
  .hero p.lead { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-visual { max-width: 560px; margin: 0 auto; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .compare, .mode-grid { grid-template-columns: 1fr; }
  .screenshot-block { grid-template-columns: 1fr; }
  .screenshot-block.reverse .media { order: 0; }
  .price-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .nav-menu {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 12px 20px; gap: 4px;
  }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }
  .nav-cta .btn-outline { display: none; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .requirements { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
}

/* ============================================================
   会员价格：活动价标注
   ============================================================ */
.price-card .price-flag {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 10px;
  border-radius: 999px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: var(--accent-dark);
  font-size: 12.5px;
  font-weight: 700;
  vertical-align: middle;
  white-space: nowrap;
}
.price-card .price-note {
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 600;
  margin-bottom: 18px;
}
.price-card.zvip { border-color: #c7d2fe; }
.price-card.zvip .price { color: #4338ca; }

/* ============================================================
   地理直播：地图 + 锚点演示（纯 CSS 绘制，无需图片素材）
   ============================================================ */
.map-demo {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background:
    radial-gradient(620px 320px at 16% 20%, rgba(59, 130, 246, .24), transparent 62%),
    radial-gradient(540px 300px at 84% 76%, rgba(16, 185, 129, .22), transparent 60%),
    radial-gradient(460px 260px at 60% 30%, rgba(245, 158, 11, .16), transparent 62%),
    linear-gradient(160deg, #eef4ff 0%, #f8fafc 46%, #edfaf4 100%);
  box-shadow: var(--shadow-md);
}

/* 经纬网格（中间实、边缘淡出） */
.map-demo::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(37, 99, 235, .12) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(37, 99, 235, .12) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 42%, #000 52%, transparent 100%);
  mask-image: radial-gradient(120% 100% at 50% 42%, #000 52%, transparent 100%);
}

/* 锚点气泡 */
.map-anchor {
  position: absolute;
  transform: translate(-50%, -50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .95);
  border: 1px solid var(--primary);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 6px 18px rgba(37, 99, 235, .22);
}
.map-anchor::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--primary);
  animation: anchorPulse 2.4s ease-out infinite;
}
@keyframes anchorPulse {
  0%   { box-shadow: 0 0 0 0 rgba(37, 99, 235, .5); }
  70%  { box-shadow: 0 0 0 13px rgba(37, 99, 235, 0); }
  100% { box-shadow: 0 0 0 0 rgba(37, 99, 235, 0); }
}

.map-demo .map-caption {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(15, 29, 51, .86);
  color: #e2e8f0;
  font-size: 13px;
  white-space: nowrap;
}

/* 地理页：对比与步骤复用现有卡片，仅补充提示条 */
.geo-tip {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-top: 28px;
  padding: 18px 22px;
  border-radius: var(--radius);
  background: #fff7ed;
  border: 1px solid #fed7aa;
}
.geo-tip .icon { font-size: 20px; line-height: 1.4; }
.geo-tip p { font-size: 14px; color: #92400e; }

@media (max-width: 640px) {
  .map-demo .map-caption { font-size: 11.5px; padding: 6px 12px; bottom: 12px; }
  .map-anchor { font-size: 11.5px; padding: 5px 10px; gap: 6px; }
  .map-anchor::before { width: 7px; height: 7px; }
}

/* ============================================================
   导航项增加到 8 个后，中等宽度下压缩间距，避免挤压换行
   ============================================================ */
@media (max-width: 1100px) and (min-width: 641px) {
  .nav-menu { gap: 2px; }
  .nav-menu a { padding: 8px 9px; font-size: 14px; }
  .logo { font-size: 18px; }
  .nav-cta .btn { padding: 9px 15px; font-size: 14px; }
}