:root {
  color-scheme: light;
  --text: #493442;
  --muted: #765f70;
  --accent: #a72d68;
  --line: #ecdce5;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--text);
  background: #fffafc;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
}
.page { max-width: 760px; margin: 0 auto; padding: 40px 24px; }
header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.brand { color: var(--accent); font-size: 18px; font-weight: 700; text-decoration: none; }
.languages { display: flex; gap: 12px; }
button {
  min-height: 44px;
  padding: 6px 0;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
}
button[aria-pressed="true"] { color: var(--accent); border-bottom-color: currentColor; }
a { color: var(--accent); text-underline-offset: 3px; overflow-wrap: anywhere; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
h1 { margin: 32px 0 8px; font-size: 32px; line-height: 1.3; }
h2 { margin: 28px 0 8px; font-size: 19px; line-height: 1.5; }
p { margin: 0 0 12px; }
ul, ol { margin: 0 0 12px; padding-left: 22px; }
li + li { margin-top: 8px; }
.meta, footer { color: var(--muted); font-size: 14px; }
.intro { margin-top: 24px; }
.email { display: inline-block; font-size: 20px; font-weight: 600; }
footer { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); }
html[data-language="en"] .localized[lang="zh-CN"],
html[data-language="zh-CN"] .localized[lang="en"] { display: none; }