/* TideCatch 静态页：无外部字体、无脚本依赖、无 Cookie */
:root {
  --bg: #f6f8fa;
  --surface: #ffffff;
  --text: #13202b;
  --muted: #56636e;
  --line: #d9e0e6;
  --accent: #0b6e99;
  --accent-soft: #e3f1f7;
  --warn-bg: #fff6e0;
  --warn-line: #e8c35a;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e151b;
    --surface: #16212a;
    --text: #e6edf2;
    --muted: #9aa8b3;
    --line: #2a3843;
    --accent: #5fc0ea;
    --accent-soft: #15303d;
    --warn-bg: #2c2512;
    --warn-line: #8a6d1d;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Apple SD Gothic Neo", "Malgun Gothic", "PingFang SC", "Noto Sans CJK", Roboto, "Helvetica Neue", Arial, sans-serif;
  overflow-wrap: anywhere;
}
a { color: var(--accent); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
header.site { border-bottom: 1px solid var(--line); background: var(--surface); }
header.site .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; padding-top: 12px; padding-bottom: 12px; }
.brand { font-weight: 700; font-size: 18px; text-decoration: none; color: var(--text); display: inline-flex; align-items: center; gap: 8px; }
.brand img { width: 28px; height: 28px; }
nav a { margin-left: 14px; text-decoration: none; font-size: 15px; }
nav a:first-child { margin-left: 0; }
nav a[aria-current="page"] { color: var(--text); font-weight: 600; }
main { padding: 28px 0 40px; }
h1 { font-size: 28px; line-height: 1.3; margin: 0 0 8px; }
h2 { font-size: 20px; line-height: 1.4; margin: 32px 0 8px; padding-top: 8px; border-top: 1px solid var(--line); }
h3 { font-size: 17px; margin: 20px 0 4px; }
p, ul, ol, dl, table { margin: 0 0 12px; }
ul, ol { padding-left: 22px; }
li { margin: 2px 0; }
.meta { color: var(--muted); font-size: 14px; }
.lead { font-size: 18px; color: var(--muted); }
.box { background: var(--accent-soft); border-radius: 12px; padding: 14px 16px; margin: 16px 0; }
.warn { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 12px; padding: 12px 16px; margin: 16px 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 20px 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.card h3 { margin-top: 0; }
.cta { display: inline-block; background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; padding: 10px 18px; border-radius: 10px; margin: 8px 0; }
@media (prefers-color-scheme: dark) { .cta { color: #06131a; } }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
th { background: var(--surface); }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin: 8px 0; }
summary { cursor: pointer; font-weight: 600; }
details p:last-child, details ul:last-child { margin-bottom: 0; }
footer { border-top: 1px solid var(--line); padding: 20px 0 32px; color: var(--muted); font-size: 14px; }
footer .langs a { margin-right: 12px; white-space: nowrap; }
.src { font-size: 14px; color: var(--muted); }