/* ============================================================
   MyAIFriend（找个AI朋友）· 站点公共样式
   纯静态，无外链、无字体请求 —— 方便爬虫和 AI 抓取，加载快
   ============================================================ */
:root {
  --green: #07c160;
  --green-dark: #06a552;
  --pink: #f06a9a;
  --ink: #14161a;
  --ink2: #4b5259;
  --ink3: #868d95;
  --line: #ebedf0;
  --bg: #f7f8fa;
  --card: #ffffff;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶栏 ---------- */
header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.navbar { display: flex; align-items: center; justify-content: space-between; height: 62px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.mark {
  width: 34px; height: 34px; flex: 0 0 34px; border-radius: 11px;
  background: linear-gradient(135deg, #07c160, #0aa86b 60%, #f06a9a 145%);
  color: #fff; font-weight: 800; font-size: 12px; letter-spacing: .3px;
  display: flex; align-items: center; justify-content: center;
}
.brand b { font-size: 15px; display: block; line-height: 1.3; }
.brand span { font-size: 11px; color: var(--ink3); display: block; font-weight: 400; letter-spacing: .3px; }
.nav { display: flex; align-items: center; gap: 16px; font-size: 13px; }
.nav a { color: var(--ink2); }
.nav a:hover { color: var(--green-dark); text-decoration: none; }
.nav a.on { color: var(--green-dark); font-weight: 600; }

/* ---------- 头图 ---------- */
main { padding: 34px 0 56px; }
.hero .tag { font-size: 12.5px; font-weight: 700; color: var(--green-dark); letter-spacing: .6px; text-transform: uppercase; }
h1 { font-size: 34px; line-height: 1.22; margin: 8px 0 12px; letter-spacing: -.6px; }
h1 em { font-style: normal; color: var(--green); }
.lead { font-size: 15.5px; color: var(--ink2); margin: 0 0 16px; }
.lead strong { color: var(--ink); }
.cta { display: flex; gap: 10px; flex-wrap: wrap; margin: 20px 0 6px; }
.btn {
  display: inline-block; text-decoration: none; font-size: 14px; font-weight: 600;
  padding: 12px 20px; border-radius: 11px; transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-main { background: var(--green); color: #fff; box-shadow: 0 6px 18px rgba(7, 193, 96, .28); }
.btn-ghost { background: #fff; color: var(--ink); border: 1px solid #dfe2e6; }

/* ---------- 一句话定义（AI 最爱引用的块） ---------- */
.answer {
  background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--green);
  border-radius: 12px; padding: 18px 20px; margin: 22px 0;
  font-size: 15px; color: #23282d;
}
.answer b { color: #0b0d10; }

/* ---------- 事实表 ---------- */
.facts { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 18px 0; font-size: 13.5px; }
.facts th, .facts td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.facts tr:last-child th, .facts tr:last-child td { border-bottom: none; }
.facts th { width: 30%; background: #fafbfc; font-weight: 600; color: var(--ink); white-space: nowrap; }
.facts td { color: var(--ink2); }

/* ---------- 正文 ---------- */
h2 { font-size: 21px; margin: 46px 0 12px; padding-top: 24px; border-top: 1px solid var(--line); letter-spacing: -.2px; }
h2:first-of-type { border-top: none; padding-top: 0; margin-top: 30px; }
h3 { font-size: 15.5px; margin: 24px 0 8px; }
p { margin: 0 0 12px; font-size: 14.5px; color: #2f353b; }
ul, ol { margin: 0 0 14px; padding-left: 22px; }
li { font-size: 14.5px; color: #2f353b; margin-bottom: 7px; }
strong { color: #0b0d10; }
code { background: #f1f3f5; border-radius: 5px; padding: 1px 6px; font-size: 13px; }

/* ---------- 卡片网格 ---------- */
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 18px 0; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 15px 17px; }
.card b { display: block; font-size: 13.5px; margin-bottom: 5px; }
.card span { font-size: 13px; color: var(--ink2); line-height: 1.72; }

/* ---------- 深色块 ---------- */
.dark { background: linear-gradient(180deg, #101418, #171d24); color: #eef1f4; border-radius: 16px; padding: 22px 24px; margin: 20px 0; }
.dark h3 { color: #fff; margin-top: 0; }
.dark p { color: #b9c1c9; font-size: 13.5px; }
.dark strong { color: #7ee2ac; }

/* ---------- FAQ ---------- */
.faq details { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 17px; margin-bottom: 10px; }
.faq summary { font-size: 14.5px; font-weight: 600; cursor: pointer; }
.faq details p { margin: 10px 0 0; font-size: 13.5px; color: var(--ink2); }

/* ---------- 页脚 ---------- */
footer { border-top: 1px solid var(--line); background: #fff; padding: 26px 0 34px; font-size: 12.5px; color: var(--ink3); }
footer a { color: var(--ink3); }
footer .flinks { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 10px; }
footer .flinks a { color: var(--ink2); }

/* ---------- 英文段 ---------- */
.en p, .en li { color: #2f353b; }

/* ---------- 类型大全（types.html / types-en.html） ---------- */
.kwgrid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0; }
.kw { background: #fff; border: 1px solid var(--line); border-radius: 11px; padding: 12px 14px; }
.kw b { display: block; font-size: 13.5px; margin-bottom: 3px; color: #0b0d10; }
.kw span { font-size: 12.5px; color: var(--ink2); line-height: 1.65; }

.kind { margin: 26px 0 6px; padding-top: 18px; border-top: 1px dashed var(--line); }
.kind:first-of-type { border-top: none; padding-top: 0; }
.kind > h3 { font-size: 17px; margin: 0 0 4px; letter-spacing: -.2px; }
.kind > h3 em { font-style: normal; font-size: 12px; font-weight: 400; color: var(--ink3); margin-left: 8px; }
.fam { margin: 0 0 7px; font-size: 13.2px; line-height: 1.9; color: #2f353b; word-break: break-word; }
.fam b { color: #0b0d10; font-weight: 600; margin-right: 6px; }
details.zh { border: 1px solid var(--line); background: #fff; border-radius: 12px; padding: 12px 16px; margin: 12px 0; }
details.zh > summary { font-size: 15px; font-weight: 600; cursor: pointer; }
details.zh[open] > summary { margin-bottom: 8px; }
.chiprow { margin: 10px 0 4px; }
.chip { display: inline-block; font-size: 12.5px; background: #fff; border: 1px solid var(--line); color: #2f353b; border-radius: 999px; padding: 3px 11px; margin: 0 5px 5px 0; }
.chip.hot { background: #eefaf2; border-color: #cdeadb; color: #0a8f4b; }

/* ---------- 其他 ---------- */
.note { font-size: 12.5px; color: var(--ink3); }
.pill { display: inline-block; font-size: 12px; background: #eefaf2; color: #0a8f4b; border-radius: 999px; padding: 3px 10px; margin: 0 6px 6px 0; }
.kbd { font-size: 12.5px; color: var(--ink3); }
.toc { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin: 18px 0; font-size: 13.5px; }
.toc b { display: block; margin-bottom: 6px; }
.toc a { color: var(--ink2); }

@media (max-width: 640px) {
  h1 { font-size: 27px; }
  .cards { grid-template-columns: 1fr; }
  .kwgrid { grid-template-columns: 1fr; }
  .facts th { width: 38%; }
  .nav { gap: 12px; font-size: 12.5px; }
  .nav a.hide-m { display: none; }
  main { padding: 24px 0 44px; }
}