/* Spec: 065-mobile-app - T023
 * Hallmark · macrostructure: Long Document · genre: editorial · theme: existing pond
 * nav: N1a (two destinations) · footer: Ft2 · reveal: none
 * audience: pond users · use: support and privacy · tone: calm documentation
 * System fonts follow the explicit standalone, no-external-font brief.
 * Hallmark · pre-emit critique: P4 H4 E4 S4 R5 V4
 */
:root {
  --color-paper: oklch(97% 0.012 85);
  --color-ink: oklch(28% 0.025 180);
  --color-muted: oklch(43% 0.025 180);
  --color-accent: oklch(38% 0.065 185);
  --color-line: oklch(80% 0.02 170);
  --color-focus: oklch(42% 0.1 65);
  --font-body: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
}
* { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { color-scheme: light; }
body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a {
  color: var(--color-accent);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-thickness: 2px; }
a:active { color: var(--color-ink); }
a:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 4px; }
.shell { width: min(100% - 2rem, 68rem); margin-inline: auto; }
.site-header { padding-block: var(--space-lg) var(--space-xl); }
.header-top, .primary-nav, .language-nav, .footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs) var(--space-lg);
}
.header-top { justify-content: space-between; gap: var(--space-xs) var(--space-md); }
.brand { font-size: 1.25rem; font-weight: 700; text-decoration: none; }
.primary-nav { margin-block-start: var(--space-xs); }
.site-header a, .footer-links a, .document-links a, .skip-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  white-space: nowrap;
}
[aria-current="page"] { font-weight: 700; text-decoration-thickness: 2px; }
.language-nav { gap: var(--space-md); }
.language-nav a { font-size: 0.9375rem; }
main { padding-block: var(--space-md) var(--space-2xl); }
.prose { max-width: 65ch; }
h1, h2 { font-style: normal; min-width: 0; overflow-wrap: anywhere; line-height: 1.35; }
h1 { margin: 0 0 var(--space-xl); font-size: clamp(1.875rem, 4vw, 2.5rem); font-weight: 700; letter-spacing: -0.035em; }
h2 { margin: var(--space-xl) 0 var(--space-md); font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
p { margin: 0 0 var(--space-lg); }
.updated { color: var(--color-muted); margin-block-start: calc(-1 * var(--space-md)); font-size: 0.9375rem; }
.document-links { display: flex; flex-wrap: wrap; gap: var(--space-sm) var(--space-xl); padding-block: var(--space-sm); }
.document-links a { font-size: 1.25rem; font-weight: 700; }
.site-footer { border-block-start: 1px solid var(--color-line); padding-block: var(--space-lg) var(--space-xl); color: var(--color-muted); }
.site-footer p { margin-block-end: var(--space-xs); }
.site-footer a { white-space: nowrap; }
.skip-link { position: absolute; inset-block-start: var(--space-sm); inset-inline-start: var(--space-md); transform: translateY(-200%); padding-inline: var(--space-md); background: var(--color-paper); }
.skip-link:focus { transform: translateY(0); }
@media (min-width: 48rem) {
  .shell { width: min(100% - 5rem, 68rem); }
  .site-header { padding-block: var(--space-xl) var(--space-2xl); }
  .primary-nav { margin-block-start: var(--space-sm); }
  .prose { margin-inline-start: min(8vw, 7rem); }
}
@media print {
  .site-header, .skip-link { display: none; }
  .shell { width: 100%; }
  .prose { max-width: none; margin: 0; }
  main { padding: 0; }
}