/* The app's midnight palette, so the pages look like the thing they belong to. */
:root {
  --bg: #070918;
  --bg-top: #111538;
  --surface: #141838;
  --line: rgba(170, 176, 255, 0.14);
  --accent: #8c8eff;
  --accent-soft: #b9b0ff;
  --text: #eef0ff;
  --text-dim: #b6bbe4;
  --text-faint: #7a80ad;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 42%);
  background-attachment: fixed;
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans Thai", sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 3rem 16px 5rem;
}

.back { margin: 0 0 2rem; }
.back a {
  color: var(--text-faint);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 700;
}
.back a:hover { color: var(--accent-soft); }

h1 {
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  line-height: 1.15;
  margin: 0 0 0.4rem;
  letter-spacing: -0.02em;
}

.meta {
  color: var(--text-faint);
  font-size: 0.9rem;
  margin: 0 0 2.5rem;
}

h2 {
  font-size: 1.15rem;
  margin: 2.6rem 0 0.7rem;
  color: var(--accent-soft);
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1rem;
  margin: 1.6rem 0 0.5rem;
  color: var(--text);
}

p, li { color: var(--text-dim); }
p { margin: 0 0 1rem; }

ul { padding-left: 1.2rem; margin: 0 0 1.2rem; }
li { margin-bottom: 0.45rem; }

strong { color: var(--text); font-weight: 650; }
em { color: var(--text); font-style: normal; font-weight: 600; }

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

.summary {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.4rem 1.5rem 0.6rem;
  margin-bottom: 1.5rem;
}
.summary h2 { margin-top: 0; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-faint); }

.cards { display: grid; gap: 1rem; margin-top: 2rem; }
.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 1.3rem 1.4rem;
  text-decoration: none;
  color: inherit;
}
.card:hover { border-color: rgba(140, 142, 255, 0.45); }
.card h2 { margin: 0 0 0.3rem; font-size: 1.1rem; color: var(--text); }
.card p { margin: 0; color: var(--text-faint); font-size: 0.93rem; }

footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--text-faint);
  font-size: 0.88rem;
}