:root {
  color-scheme: dark;
  --page: #101113;
  --ink: #f1f2f4;
  --muted: #a7abb4;
  --line: #35373c;
  --focus: #e0e3e9;
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--page);
  color: var(--ink);
  font-synthesis: none;
  scrollbar-color: #666b75 var(--page);
}
* { box-sizing: border-box; }
body { margin: 0; -webkit-font-smoothing: antialiased; }
::selection { background: var(--focus); color: var(--page); }
.page { width: min(1120px, calc(100% - 96px)); min-height: 100svh; margin-inline: auto; display: flex; flex-direction: column; }
.masthead { min-height: 106px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); }
.wordmark { font-size: 22px; font-weight: 600; letter-spacing: -.025em; }
.site-type { font-size: 14px; color: var(--muted); }
main { flex: 1; display: flex; flex-direction: column; }
.intro { flex: 1; display: grid; grid-template-columns: 1.15fr 1fr; align-items: center; gap: 64px; padding-block: clamp(64px, 12vh, 132px); }
h1 { font-size: clamp(40px, 4.4vw, 64px); line-height: 1.4; font-weight: 600; letter-spacing: -.03em; margin: 0; text-wrap: balance; }
h1 span { color: var(--muted); }
p { margin: 0; text-wrap: pretty; }
.introduction { font-size: 16px; line-height: 1.9; }
.introduction p + p { margin-top: 16px; color: var(--muted); }
.about { border-top: 1px solid var(--line); display: grid; grid-template-columns: 1.15fr 1fr; gap: 64px; padding-block: 32px 48px; }
h2 { font-size: 15px; line-height: 1.8; font-weight: 500; margin: 0; color: var(--muted); }
.site-name { font-size: 17px; line-height: 1.6; }
.about-copy { color: var(--muted); font-size: 14px; line-height: 1.9; margin-top: 8px; max-width: 32em; }
footer { min-height: 86px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--muted); font-size: 13px; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 5px; }
footer a { min-height: 44px; display: inline-flex; align-items: center; gap: 6px; text-decoration-color: transparent; transition: color 160ms ease-out, text-decoration-color 160ms ease-out; }
footer a:hover { color: var(--ink); text-decoration-color: currentColor; }
a:focus-visible { outline: 2px solid var(--focus); outline-offset: 5px; }
.skip { position: absolute; left: 24px; top: 12px; padding: 12px; background: var(--ink); color: var(--page); transform: translateY(-200%); }
.skip:focus { transform: none; }
@media (max-width: 760px) {
  .page { width: calc(100% - 48px); }
  .masthead { min-height: 84px; }
  .wordmark { font-size: 20px; }
  .intro { grid-template-columns: 1fr; align-content: center; gap: 32px; padding-block: 64px; }
  h1 { font-size: clamp(38px, 9vw, 56px); }
  .introduction { font-size: 15px; }
  .desktop-break { display: none; }
  .about { grid-template-columns: 1fr; gap: 12px; padding-block: 24px 32px; }
  footer { align-items: flex-start; justify-content: center; flex-direction: column; gap: 2px; padding-block: 18px; }
}
@media (prefers-reduced-motion: reduce) { footer a { transition: none; } }