:root {
  --bg: #fafafc;
  --text: #17171c;
  --muted: #6e6e78;
  --accent: #6c5ce7;
  --accent-2: #a29bfe;
  --border: #e7e7ee;
  --card: #ffffff;
  --shadow: 0 8px 30px rgba(23, 23, 28, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e13;
    --text: #f2f2f7;
    --muted: #9a9aa5;
    --accent: #8f82ff;
    --accent-2: #6c5ce7;
    --border: #26262e;
    --card: #17171e;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Top gradient ribbon */
body::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent));
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px 16px;
  padding: 18px 0;
  margin-bottom: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}

.brand .logo {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
}

nav {
  display: flex;
  gap: 4px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  transition: color 0.15s ease, background 0.15s ease;
}

nav a:hover {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

nav a[aria-current="page"] {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* Hero (landing page) */
.hero {
  text-align: center;
  padding: 40px 0 16px;
}

.hero h1 {
  font-size: 40px;
  letter-spacing: -0.03em;
  margin: 0 0 12px;
}

.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  color: var(--muted);
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto;
}

/* Link cards on landing page */
.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 40px 0;
}

.tile {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 22px;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.tile:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.tile .emoji {
  font-size: 26px;
  display: block;
  margin-bottom: 10px;
}

.tile h3 {
  margin: 0 0 6px;
  font-size: 17px;
  letter-spacing: -0.01em;
}

.tile p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

/* Content pages */
article h1 {
  font-size: 32px;
  letter-spacing: -0.02em;
  margin: 8px 0 4px;
}

p.updated {
  color: var(--muted);
  font-size: 14px;
  margin-top: 0;
  margin-bottom: 28px;
}

article h2 {
  font-size: 19px;
  letter-spacing: -0.01em;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}

article h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

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

ul {
  padding-left: 22px;
}

li {
  margin: 6px 0;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 26px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}

.email-cta {
  display: inline-block;
  margin-top: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff !important;
  font-weight: 600;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease;
}

.email-cta:hover {
  transform: translateY(-2px);
}

footer.site {
  margin-top: 56px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

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

footer.site a:hover {
  color: var(--accent);
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 32px;
  }
}