/* heyhomeBackup public information site. Static, self-contained, no web fonts or external assets. */
:root {
  --paper: #f7f4ee;
  --card: #fffdf9;
  --ink: #1e2a26;
  --muted: #5a6661;
  --rule: #ddd6c9;
  --accent: #1f5c4a;
  --accent-soft: #e3eee9;
  --warn: #7a4b12;
  --warn-soft: #f6ecdc;
  --measure: 68rem;
  --radius: 10px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #141a18;
    --card: #1b2320;
    --ink: #e7ece9;
    --muted: #a3b0aa;
    --rule: #2f3a36;
    --accent: #8fd1b8;
    --accent-soft: #1f302a;
    --warn: #f0c888;
    --warn-soft: #2e2618;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang HK", "PingFang TC", "Noto Sans CJK TC",
    "Noto Sans TC", "Microsoft JhengHei", "Heiti TC", sans-serif;
  font-size: 1rem;
  line-height: 1.7;
}
:lang(zh-Hant-HK) { line-height: 1.85; letter-spacing: 0.01em; }
a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--accent-soft);
  padding: 0.1em 0.35em;
  border-radius: 4px;
  overflow-wrap: anywhere;
}
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; background: var(--card); padding: 0.5rem 0.8rem; z-index: 10; }

.masthead { border-bottom: 1px solid var(--rule); background: var(--card); }
.masthead-inner {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}
.wordmark { font-weight: 700; font-size: 1.05rem; color: var(--ink); text-decoration: none; letter-spacing: 0.02em; }
.wordmark span { color: var(--muted); font-weight: 500; }
.site-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.35rem; }
.site-nav a {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--ink);
  font-size: 0.95rem;
}
.site-nav a:hover { background: var(--accent-soft); }
.site-nav a[aria-current="page"] { background: var(--accent); color: var(--card); }

main { max-width: var(--measure); margin: 0 auto; padding: 2rem 1.25rem 3rem; }
.hero { padding: 1.5rem 0 1rem; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; color: var(--muted); margin: 0 0 0.5rem; }
h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.25; margin: 0 0 0.4rem; }
h1 .en { display: block; font-size: 0.62em; color: var(--muted); font-weight: 500; margin-top: 0.3rem; }
h2 { font-size: 1.2rem; line-height: 1.4; margin: 0 0 0.6rem; }
h3 { font-size: 1rem; margin: 1rem 0 0.4rem; }
p, ul, ol { margin: 0 0 0.8rem; }
ul, ol { padding-left: 1.3rem; }
li { margin-bottom: 0.35rem; }
.updated { color: var(--muted); font-size: 0.92rem; margin: 0.6rem 0 0; }

.notice {
  display: grid;
  gap: 1rem 2rem;
  grid-template-columns: 1fr;
  background: var(--warn-soft);
  color: var(--ink);
  border-left: 4px solid var(--warn);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin: 1.25rem 0 1.5rem;
}
.notice p { margin: 0; }
.notice strong { color: var(--warn); }

.pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 2.5rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 0.6rem;
  margin: 0 0 1rem;
}
.pair > div { min-width: 0; }
.pair > div + div { border-top: 1px dashed var(--rule); padding-top: 1rem; }
.pair h2 .num { color: var(--accent); margin-right: 0.35rem; font-variant-numeric: tabular-nums; }

.cards { display: grid; grid-template-columns: 1fr; gap: 1rem; margin: 1.5rem 0; }
.card {
  display: block;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  text-decoration: none;
  color: var(--ink);
}
.card:hover { border-color: var(--accent); }
.card .title { display: block; font-weight: 700; color: var(--accent); font-size: 1.1rem; margin-bottom: 0.25rem; }
.card .sub { display: block; color: var(--muted); font-size: 0.95rem; }

.facts { list-style: none; padding: 0; }
.facts li { padding-left: 1.3rem; position: relative; }
.facts li::before { content: "—"; position: absolute; left: 0; color: var(--accent); }

.toc { font-size: 0.95rem; columns: 2 14rem; column-gap: 2rem; background: var(--card); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 1rem 1.25rem 1rem 2.6rem; margin: 0 0 1.5rem; }
.toc li { break-inside: avoid; }

.footer { border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.9rem; }
.footer-inner { max-width: var(--measure); margin: 0 auto; padding: 1.25rem; display: flex; flex-wrap: wrap;
  justify-content: space-between; gap: 0.5rem 1.5rem; }
.footer ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 1rem; }
.footer p { margin: 0; }

@media (min-width: 52rem) {
  .pair { grid-template-columns: 1fr 1fr; padding: 1.5rem 1.75rem 0.8rem; }
  .pair > div + div { border-top: 0; padding-top: 0; border-left: 1px dashed var(--rule); padding-left: 2.5rem; }
  .notice { grid-template-columns: 1fr 1fr; }
  .cards { grid-template-columns: 1fr 1fr; }
}
@media print {
  :root { --paper: #fff; --card: #fff; --ink: #000; --muted: #333; --accent: #000; }
  .masthead, .site-nav, .skip, .footer ul { display: none; }
  .pair { break-inside: avoid; border: 0; padding: 0.5rem 0; }
  a { color: #000; }
}