/* 我的行迹小记 —— 官网样式
   刻意不引外部 CDN：一是国内访问更快，二是备案审核期间少一个外部依赖。
   字体用系统栈，正文行高放宽，读起来不累。 */

:root {
  --blue: #0b5fff;
  --blue-dark: #0847c4;
  --ink: #0d1117;
  --ink-2: #4a5568;
  --ink-3: #6b7785;
  --line: #e5e8ee;
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei",
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.75;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: min(1080px, 100% - 48px); margin-inline: auto; }
.wrap.narrow { width: min(760px, 100% - 48px); }
.center { text-align: center; }

/* ---------- 顶部导航 ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(10px);
  background: rgba(255, 255, 255, .86);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: .2px;
}
.brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 22px; }
.nav-links a { color: var(--ink-2); font-size: 15px; }
.nav-links a:hover { color: var(--blue); text-decoration: none; }

/* ---------- 首屏 ---------- */
.hero {
  background:
    radial-gradient(900px 420px at 78% 8%, rgba(11, 95, 255, .10), transparent 62%),
    linear-gradient(180deg, var(--bg-soft), var(--bg));
  border-bottom: 1px solid var(--line);
  padding: 72px 0 80px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  align-items: center;
}
.eyebrow {
  margin: 0 0 14px;
  font-size: 13px;
  color: var(--blue);
  letter-spacing: .6px;
}
.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.32;
  letter-spacing: -.4px;
}
.lede { margin: 0 0 28px; color: var(--ink-2); font-size: 16.5px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  transition: .18s;
}
.btn.primary { background: var(--blue); color: #fff; }
.btn.primary:hover { background: var(--blue-dark); text-decoration: none; }
.btn.ghost { border: 1px solid var(--line); color: var(--ink-2); }
.btn.ghost:hover { border-color: #cfd6e4; text-decoration: none; }

/* 右侧示意卡片：纯 CSS 画，避免多一份图片资源 */
.hero-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: 0 18px 40px -22px rgba(13, 17, 23, .28);
}
.map {
  position: relative;
  height: 200px;
  border-radius: 10px;
  background:
    linear-gradient(90deg, rgba(11, 95, 255, .07) 1px, transparent 1px) 0 0/44px 44px,
    linear-gradient(0deg, rgba(11, 95, 255, .07) 1px, transparent 1px) 0 0/44px 44px,
    linear-gradient(140deg, #eef3fb, #e3ecfa);
}
.pin {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50% 50% 50% 0;
  transform: rotate(-45deg);
  background: var(--blue);
  box-shadow: 0 2px 6px rgba(11, 95, 255, .45);
}
.pin-a { top: 38%; left: 26%; }
.pin-b { top: 58%; left: 54%; background: #ff7a45; box-shadow: 0 2px 6px rgba(255, 122, 69, .45); }
.pin-c { top: 26%; left: 72%; }
.bubble {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
}
.bubble-title { margin: 0 0 4px; font-weight: 600; font-size: 15px; }
.bubble-text { margin: 0; color: var(--ink-3); font-size: 14px; }

/* ---------- 通用区块 ---------- */
.section { padding: 64px 0; }
.section.alt { background: var(--bg-soft); border-block: 1px solid var(--line); }
.section-title { margin: 0 0 8px; font-size: 24px; letter-spacing: -.2px; }
.section-sub { margin: 0 0 32px; color: var(--ink-3); }
.section p { color: var(--ink-2); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
  gap: 18px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  transition: .18s;
}
.card:hover { border-color: #cfd9ee; box-shadow: 0 12px 28px -20px rgba(13, 17, 23, .3); }
.card-icon { font-size: 20px; }
.card h3 { margin: 10px 0 6px; font-size: 16.5px; }
.card p { margin: 0; font-size: 14.5px; color: var(--ink-3); }

.mail { font-size: 19px; margin: 6px 0 14px; }
.hint { color: var(--ink-3); font-size: 14px; }

/* ---------- 页脚 ---------- */
.foot {
  border-top: 1px solid var(--line);
  padding: 30px 0 40px;
  background: #fff;
}
.foot-inner { text-align: center; }
.foot-links { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; }
.foot-links a { color: var(--ink-2); font-size: 14.5px; }
.beian-line { margin: 16px 0 6px; }
.beian { color: var(--ink-3); font-size: 13.5px; }
.copy { margin: 0; color: #97a1b0; font-size: 13px; }

/* ---------- 文档页（隐私政策 / 用户协议） ---------- */
.doc { padding: 48px 0 72px; }
.doc h1 { font-size: 26px; margin: 0 0 6px; }
.doc .meta { color: var(--ink-3); font-size: 14px; margin: 0 0 30px; }
.doc h2 { font-size: 17.5px; margin: 32px 0 8px; }
.doc p, .doc li { color: var(--ink-2); font-size: 15.5px; }
.doc ul { padding-left: 22px; }
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 14.5px; }
.doc th, .doc td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; color: var(--ink-2); }
.doc th { background: var(--bg-soft); font-weight: 600; }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .hero { padding: 48px 0 56px; }
  .section { padding: 48px 0; }
  .nav-links { gap: 16px; }
  .nav-links a { font-size: 14px; }
}