/* SparCode 設計準則 v1.1、03-color／04-typography：本頁使用的語意 Token 子集。 */
:root {
  color-scheme: light dark;
  --color-background: #ffffff;
  --color-foreground: #212528;
  --color-foreground-secondary: #41464d;
  --color-foreground-muted: #6b7280;
  --color-primary-text: #203a59;
  --color-border: #d8dbdf;
  --color-focus: #34506b;
  --font-sans: Manrope, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", Arial, sans-serif;
  --fs-title: clamp(1.75rem, 5vw, 2.25rem);
  --fs-h4: 1.375rem;
  --fs-body: 1rem;
  --fs-body-lg: 1.125rem;
  --fs-small: 0.875rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
}
@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #11161c;
    --color-foreground: #f7f8f9;
    --color-foreground-secondary: #adb5be;
    --color-foreground-muted: #8c96a1;
    --color-primary-text: #93abc0;
    --color-border: #34404c;
    --color-focus: #d2b46d;
  }
}
* { box-sizing: border-box; }
html { background: var(--color-background); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-foreground);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.8;
  letter-spacing: 0;
  line-break: strict;
}
.page {
  width: min(100% - var(--space-12), 43rem);
  margin-inline: auto;
  padding-block: var(--space-8) var(--space-6);
}
.brand {
  padding-block: var(--space-4) var(--space-8);
  border-bottom: 2px solid var(--color-primary-text);
}
.brand picture { display: block; }
.brand img { display: block; width: 9rem; max-width: 100%; height: auto; }
.introduction { margin-block: var(--space-10) var(--space-10); }
h1, h2, p { margin: 0; }
h1 {
  color: var(--color-primary-text);
  font-size: var(--fs-title);
  font-weight: 700;
  line-height: 1.4;
  text-wrap: balance;
}
h1 span { white-space: nowrap; }
.lead {
  margin-top: var(--space-4);
  color: var(--color-foreground-secondary);
  font-size: var(--fs-body-lg);
  line-height: 1.75;
}
section + section { margin-top: var(--space-8); }
h2 {
  margin-bottom: var(--space-2);
  color: var(--color-foreground);
  font-size: var(--fs-h4);
  font-weight: 600;
  line-height: 1.5;
  text-wrap: balance;
}
p { text-wrap: pretty; overflow-wrap: break-word; }
a {
  color: var(--color-primary-text);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
  overflow-wrap: anywhere;
}
a:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 4px; }
a[href^="mailto:"] { display: inline-block; max-width: 100%; min-height: 44px; line-height: 2.75; }
.updated {
  margin-top: var(--space-10);
  color: var(--color-foreground-secondary);
  font-size: var(--fs-small);
}
footer {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  color: var(--color-foreground-muted);
}
footer small { font-size: var(--fs-small); }
.credit { margin-left: auto; }
@media (max-width: 360px) {
  .page { width: calc(100% - var(--space-8)); }
  .introduction { margin-block: var(--space-8); }
  h2 { font-size: 1.25rem; }
}
@media print {
  :root { color-scheme: light; --color-background: #fff; --color-foreground: #212528; --color-foreground-secondary: #41464d; --color-foreground-muted: #41464d; --color-primary-text: #203a59; }
  .page { width: 100%; padding: 0; }
  section { break-inside: avoid; }
  .brand { display: none; }
}