/* ============================================================
   内容页样式（隐私政策 / 关于 / 联系 / 教程 / 404）
   ============================================================ */

:root {
  --bg:            #f4f6f9;
  --surface:       #ffffff;
  --surface-2:     #fafbfc;
  --border:        #e4e8ee;
  --border-strong: #d3d9e2;
  --text:          #1b2230;
  --text-2:        #5b6675;
  --text-3:        #8b95a3;
  --accent:        #3d6bf5;
  --accent-hover:  #2f59dc;
  --accent-soft:   #eaf0ff;
  --radius:        10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }

/* ---------------- 按钮（ads.js 的同意条会用到） ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--surface-2); border-color: var(--border-strong); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* ---------------- 顶部 ---------------- */
.site-head {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.head-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--text);
  text-decoration: none;
}
.brand-mark {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, #4d7cff, #2f4fe0);
}
.brand-mark svg { width: 18px; height: 18px; }
.brand-text { font-size: 15px; font-weight: 650; letter-spacing: .2px; }

.head-nav { display: flex; gap: 8px; align-items: center; }

/* ---------------- 正文 ---------------- */
.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 32px 24px 56px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 34px 38px 38px;
}
.card h1 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 650;
  letter-spacing: .2px;
}
.card h2 {
  margin: 34px 0 10px;
  font-size: 16px;
  font-weight: 650;
  padding-left: 11px;
  border-left: 3px solid var(--accent);
}
.card h3 {
  margin: 22px 0 6px;
  font-size: 14px;
  font-weight: 650;
}
.card p { margin: 0 0 12px; color: var(--text-2); }
.card ul, .card ol { margin: 0 0 14px; padding-left: 22px; color: var(--text-2); }
.card li { margin-bottom: 6px; }
.card strong { color: var(--text); font-weight: 600; }
.lead { font-size: 15px; color: var(--text) !important; }
.updated { font-size: 12px; color: var(--text-3); margin-bottom: 26px !important; }

.callout {
  margin: 18px 0 20px;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--text-2);
  font-size: 13px;
}
.callout p { margin: 0; color: inherit; }
.callout.warn { background: #fff8e8; }

table {
  width: 100%;
  margin: 6px 0 18px;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  padding: 9px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  color: var(--text-2);
}
th { background: var(--surface-2); color: var(--text); font-weight: 600; }
td kbd {
  display: inline-block;
  min-width: 20px;
  padding: 1px 6px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface-2);
  font-family: ui-monospace, Consolas, monospace;
  font-size: 12px;
  color: var(--text);
}

/* ---------------- 广告位 ---------------- */
.ad-slot { flex: 0 0 auto; }
.ad-slot .adsbygoogle { display: block; }
.ad-page {
  width: 728px;
  max-width: 100%;
  min-height: 90px;
  margin: 24px auto 0;
}
.ad-slot.ad-placeholder {
  display: grid;
  place-items: center;
  min-height: 90px;
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 11px;
  letter-spacing: .6px;
}

/* Cookie 同意条 */
.cookie-bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  padding: 13px 20px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -6px 24px rgba(16, 24, 40, .10);
  font-size: 12.5px;
  color: var(--text-2);
}
.cookie-bar p { margin: 0; flex: 1 1 320px; line-height: 1.6; }
.cookie-bar a { color: var(--accent); text-decoration: none; }
.cookie-bar a:hover { text-decoration: underline; }
.cookie-actions { display: flex; gap: 8px; }

/* ---------------- 页脚 ---------------- */
.site-foot2 {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 20px 24px 32px;
}
.foot-inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 12.5px;
  color: var(--text-3);
}
.foot-links { display: flex; flex-wrap: wrap; gap: 6px 16px; }
.foot-links a { color: var(--text-2); text-decoration: none; }
.foot-links a:hover { color: var(--accent); text-decoration: underline; }

@media (max-width: 640px) {
  .card { padding: 24px 18px 28px; border-radius: 12px; }
  .card h1 { font-size: 20px; }
  .head-inner { padding: 0 16px; }
  .page { padding: 20px 14px 40px; }
}