/*
 * Quiet Ink, the Sayboard design system, as a static stylesheet.
 * Light and dark are both first-class: iOS opens these pages in whichever
 * appearance the reader is already using.
 */
:root {
  color-scheme: light dark;

  --ink: #191b1f;
  --bg: #fafafb;
  --surface: #ffffff;
  --border: #e3e5e8;
  --text: #191b1f;
  --text-2: #3d434d;
  --text-3: #83898f;
  --accent: #2b5fc7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0e11;
    --surface: #15171b;
    --border: #2a2d34;
    --text: #f5f6f8;
    --text-2: #a3a9b3;
    --text-3: #6e747e;
    --accent: #8ab0f4;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 40px 20px 80px;
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 720px;
  margin: 0 auto;
}

h1 {
  font-size: 30px;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
  color: var(--text);
}

h2 {
  font-size: 18px;
  margin: 34px 0 8px;
  color: var(--text);
}

h3 {
  font-size: 16px;
  margin: 24px 0 6px;
  color: var(--text);
}

p,
li {
  color: var(--text-2);
}

.meta {
  color: var(--text-3);
  font-size: 14px;
  margin: 0 0 28px;
}

ul {
  padding-left: 20px;
}

li {
  margin: 6px 0;
}

a {
  color: var(--accent);
}

.box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 20px 0;
}

.box strong {
  color: var(--text);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0 0 32px;
  font-size: 14px;
}

nav a {
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

.mark {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 26px;
  margin-bottom: 18px;
}

.mark span {
  display: block;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
}

.mark span:nth-child(1),
.mark span:nth-child(5) {
  height: 9px;
}

.mark span:nth-child(2),
.mark span:nth-child(4) {
  height: 17px;
}

.mark span:nth-child(3) {
  height: 26px;
}

.cards {
  display: grid;
  gap: 12px;
  margin: 28px 0;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  text-decoration: none;
}

.card:hover {
  border-color: var(--accent);
}

.card strong {
  display: block;
  color: var(--text);
  font-size: 16px;
  margin-bottom: 2px;
}

.card span {
  color: var(--text-3);
  font-size: 14px;
}

footer {
  margin-top: 44px;
  font-size: 14px;
  color: var(--text-3);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}