/* 喵小弟 — 隐私政策 / 用户协议 / 联系支持 共用样式
   主题色与 iOS app 内 MiaoTheme 保持一致: cream + softGreen + green + ink */

:root {
  --bg: #FBF4E6;
  --bg-soft: #F3E9D2;
  --ink: #2D3A2C;
  --ink-soft: #5A6A57;
  --ink-subtle: #8B9886;
  --green: #4F7A3A;
  --green-deep: #2F5022;
  --soft-green: #B5C9A6;
  --soft-green-soft: #D9E4CC;
  --border: rgba(75, 122, 58, 0.15);
  --shadow: 0 2px 8px rgba(45, 58, 44, 0.06);
  --shadow-lg: 0 8px 24px rgba(45, 58, 44, 0.10);
  --max-w: 820px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
a:hover { border-bottom-color: var(--green); }

/* ====== 顶部导航 ====== */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(251, 244, 230, 0.92);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 17px;
  color: var(--ink);
  border-bottom: none;
}
.nav-logo:hover { border-bottom: none; }
.nav-logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.nav-logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.nav-back {
  margin-left: auto;
  color: var(--green);
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.nav-back:hover { border-bottom-color: var(--green); }

/* ====== 主内容容器 ====== */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.doc-header {
  text-align: center;
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
.doc-badge {
  display: inline-block;
  padding: 4px 12px;
  background: var(--soft-green-soft);
  color: var(--green-deep);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.doc-title {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 12px;
  color: var(--ink);
  letter-spacing: -0.5px;
}
.doc-meta {
  font-size: 13px;
  color: var(--ink-subtle);
  margin: 0;
}
.doc-meta strong { color: var(--ink-soft); font-weight: 500; }

/* ====== 段落与列表 ====== */
h2 {
  font-size: 21px;
  font-weight: 600;
  color: var(--green-deep);
  margin: 44px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--border);
}
h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  margin: 24px 0 10px;
}
h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  margin: 18px 0 6px;
}
p {
  margin: 0 0 12px;
  color: var(--ink-soft);
}
ul, ol {
  margin: 0 0 16px;
  padding-left: 22px;
  color: var(--ink-soft);
}
li { margin-bottom: 6px; }
li strong { color: var(--ink); font-weight: 600; }
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  background: var(--soft-green-soft);
  color: var(--green-deep);
  padding: 1px 6px;
  border-radius: 4px;
}

.note {
  background: #FFF8E8;
  border-left: 3px solid #E8B947;
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  margin: 18px 0;
  font-size: 14px;
  color: var(--ink-soft);
}
.note strong { color: var(--ink); }

.summary-list {
  background: var(--soft-green-soft);
  border-radius: 12px;
  padding: 18px 22px;
  margin: 24px 0 32px;
  font-size: 14px;
  color: var(--ink-soft);
  list-style: none;
  padding-left: 22px;
}
.summary-list li {
  padding-left: 20px;
  position: relative;
  margin-bottom: 6px;
}
.summary-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

/* ====== 表格（保留供未来使用） ====== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--border);
}
th {
  background: var(--soft-green-soft);
  color: var(--ink);
  font-weight: 600;
}

/* ====== 页脚 ====== */
footer {
  text-align: center;
  padding: 32px 20px 48px;
  font-size: 13px;
  color: var(--ink-subtle);
  border-top: 1px solid var(--border);
  margin-top: 48px;
}
footer p { margin: 4px 0; color: var(--ink-subtle); }

/* ====== Support 页卡片 ====== */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 24px 0;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  box-shadow: var(--shadow);
}
.card h3 {
  margin-top: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}
.card h3::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
}
.card p { margin-bottom: 8px; }
.card .btn {
  display: inline-block;
  margin-top: 10px;
  padding: 8px 16px;
  background: var(--green);
  color: #fff;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border-bottom: none;
  transition: background 0.2s;
}
.card .btn:hover { background: var(--green-deep); border-bottom: none; }

.faq {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0 24px;
  margin: 24px 0;
}
.faq details {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.faq details:last-child { border-bottom: none; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  font-size: 15px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq summary::after {
  content: "+";
  color: var(--green);
  font-size: 22px;
  font-weight: 400;
  transition: transform 0.2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

/* ====== 响应式 ====== */
@media (max-width: 640px) {
  .doc-title { font-size: 26px; }
  h2 { font-size: 19px; }
  h3 { font-size: 16px; }
  main { padding: 24px 16px 60px; }
  .nav-inner { padding: 12px 16px; }
}