:root {
  --bg: #f4f1ea;
  --panel: #fbf9f4;
  --ink: #1d2422;
  --muted: #5f6b66;
  --line: #d6d0c2;
  --accent: #0b7a5c;
  --accent-ink: #ffffff;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Roboto Mono", Menlo, Consolas, monospace;
  --sans: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111615;
    --panel: #18201e;
    --ink: #e6ebe7;
    --muted: #93a19b;
    --line: #2a3531;
    --accent: #3fd0a4;
    --accent-ink: #0b1513;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */

.top {
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.top .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--mono);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand img { width: 26px; height: 26px; display: block; }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-family: var(--mono);
  font-size: 14px;
}

.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover, .nav a.here { color: var(--accent); }

/* Hero */

.hero { padding: 56px 0 28px; }

.kicker {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

h2 {
  margin: 44px 0 12px;
  font-size: 22px;
  line-height: 1.3;
}

.lead {
  margin: 0;
  max-width: 60ch;
  font-size: 19px;
  color: var(--muted);
}

.scope {
  display: block;
  width: 100%;
  height: auto;
  margin: 34px 0 0;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
}

/* Lists of notes */

.notes {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.notes li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.notes time, .meta {
  display: block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}

.notes a {
  display: inline-block;
  margin: 4px 0;
  font-size: 19px;
  font-weight: 600;
}

.notes p { margin: 0; color: var(--muted); }

/* Article */

.article { padding: 44px 0 10px; }
.article h1 { font-size: clamp(27px, 5vw, 38px); }
.article p, .article li { max-width: 66ch; }
.article ul, .article ol { padding-left: 22px; }
.article li { margin: 6px 0; }

code {
  font-family: var(--mono);
  font-size: 0.9em;
  padding: 2px 5px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
}

table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 15px;
}

th, td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.tip {
  margin: 22px 0;
  padding: 14px 16px;
  border-left: 3px solid var(--accent);
  background: var(--panel);
}

.tip p { margin: 0; }

.back {
  display: inline-block;
  margin: 26px 0 0;
  font-family: var(--mono);
  font-size: 14px;
}

/* 404 */

.lost { padding: 80px 0 40px; }

.lost .code {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(64px, 18vw, 120px);
  line-height: 1;
  color: var(--accent);
}

/* Footer */

.foot {
  margin-top: 64px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}

.foot .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 20px;
  padding-top: 20px;
  padding-bottom: 28px;
}

.foot a { color: var(--muted); }