:root {
  --bg: #F1F3F6; --surface: #FFFFFF; --ink: #14243A; --muted: #56657A;
  --line: #CBD3DD; --lane: #E5EAF0; --accent: #B8342A;
  --font-display: "Bai Jamjuree", "IBM Plex Sans Thai", system-ui, sans-serif;
  --font-body: "IBM Plex Sans Thai", "Noto Sans Thai", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E151E; --surface: #16202C; --ink: #E3E9F1; --muted: #93A1B3;
    --line: #2A3848; --lane: #121B26; --accent: #EE7468;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.7 var(--font-body); }
.wrap { max-width: 880px; margin: 0 auto; padding: 32px 16px 64px; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.3; text-wrap: balance; }
h1 { font-size: clamp(30px, 6vw, 42px); margin: 0 0 12px; }
a { color: var(--accent); }
.eyebrow { font: 12px var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.lead { color: var(--muted); max-width: 62ch; }
nav { display: flex; gap: 20px; padding-bottom: 16px; border-bottom: 2px solid var(--ink); margin-bottom: 40px; font-family: var(--font-mono); font-size: 14px; }
nav a { color: var(--ink); text-decoration: none; }
nav .home { margin-right: auto; font-weight: 600; }
.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); padding: 0; list-style: none; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 18px; }
.card h3 { margin: 4px 0 8px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.video { position: relative; aspect-ratio: 16 / 9; background: var(--lane); border-radius: 8px; overflow: hidden; }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.note { border-left: 3px solid var(--accent); padding: 8px 14px; background: var(--surface); color: var(--muted); font-size: 14px; }
footer { margin-top: 64px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }