:root {
  --bg: #fbfbfd;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --border: #e3e3e8;
  --accent: #1a73e8;
  --accent-soft: #e8f0fe;
  --code-bg: #f2f2f5;
  --chip-1: #1a73e8;
  --chip-2: #188038;
  --chip-3: #e37400;
  --chip-4: #a142f4;
  --radius: 14px;
  --max: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --surface: #1c1c1f;
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --border: #2e2e33;
    --accent: #8ab4f8;
    --accent-soft: #1f2a3d;
    --code-bg: #26262a;
    --chip-1: #8ab4f8;
    --chip-2: #81c995;
    --chip-3: #fcad70;
    --chip-4: #c58af9;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
  font: 0.88em ui-monospace, "SF Mono", Menlo, monospace;
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 5px;
  overflow-wrap: anywhere;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
}
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; }

.site-nav { display: flex; gap: 18px; font-size: 15px; }
.site-nav a { color: var(--muted); }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--text); text-decoration: none; }

/* Content */

main { padding: 48px 0 64px; }

h1 { font-size: 2.2rem; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.02em; }
h2 { font-size: 1.35rem; margin: 2.2em 0 0.6em; letter-spacing: -0.01em; }
h3 { font-size: 1.05rem; margin: 1.8em 0 0.4em; }

p, ul, ol { margin: 0 0 1em; }
li { margin: 0.3em 0; }

.lede { font-size: 1.2rem; color: var(--muted); margin-bottom: 1.4em; }
.meta { color: var(--muted); font-size: 15px; margin-bottom: 2em; }

.callout {
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 1.5em 0;
}
.callout p:last-child { margin-bottom: 0; }

.button {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
}
.button:hover { text-decoration: none; opacity: 0.9; }
.button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--border); }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.5em 0 0; }

/* Hero */

.hero { text-align: center; }
.hero .actions { justify-content: center; }
.free-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 16px;
}

/* Decorative month widget */

.widget {
  max-width: 420px;
  margin: 44px auto 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  text-align: left;
}
.widget-title { font-weight: 700; font-size: 15px; margin: 0 0 10px 4px; }
.grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 3px;
}
.dow { font-size: 10px; color: var(--muted); text-align: center; font-weight: 600; }
.day {
  min-height: 42px;
  border-radius: 6px;
  padding: 3px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.day b { font-size: 11px; font-weight: 500; color: var(--muted); padding-left: 2px; }
.day.today b {
  background: var(--accent);
  color: var(--surface);
  border-radius: 999px;
  width: 18px;
  height: 18px;
  display: grid;
  place-items: center;
  padding: 0;
}
.chip { display: block; height: 5px; border-radius: 3px; }
.c1 { background: var(--chip-1); }
.c2 { background: var(--chip-2); }
.c3 { background: var(--chip-3); }
.c4 { background: var(--chip-4); }

/* Feature list */

.features {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.features li {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  font-size: 15px;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  padding: 24px 0 40px;
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 10px; }
.site-footer a { color: var(--muted); }
.site-footer p { margin: 0; }

@media (max-width: 520px) {
  body { font-size: 16px; }
  h1 { font-size: 1.8rem; }
  main { padding-top: 32px; }
  .day { min-height: 34px; }
}