:root {
  --font-display: "Syne", sans-serif;
  --font-body: "IBM Plex Sans Thai", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", "SF Mono", monospace;
  --teal: #2cd5c4;
  --teal-dim: rgba(44, 213, 196, 0.1);
  --yellow: #f5c842;
  --yellow-rgb: 245, 200, 66;
  --bg-0: #0b0f1a;
  --bg-1: #111827;
  --bg-2: #1a2236;
  --border: rgba(180, 200, 255, 0.09);
  --border-strong: rgba(180, 200, 255, 0.15);
  --text-0: #eef2ff;
  --text-1: #b8c4e0;
  --text-2: #6b7a99;
  --max-w: 1080px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-1);
  background:
    radial-gradient(circle at 20% 0%, rgba(44, 213, 196, 0.08), transparent 28rem),
    radial-gradient(circle at 85% 12%, rgba(245, 200, 66, 0.08), transparent 24rem),
    var(--bg-0);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.024;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 128px;
}

a { color: inherit; text-decoration: none; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--border);
  background: rgba(11, 15, 26, 0.86);
  backdrop-filter: blur(20px) saturate(160%);
}

.header-inner {
  width: min(100% - var(--gutter) * 2, var(--max-w));
  height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--text-0);
  font-weight: 700;
}

.brand img {
  width: 28px;
  height: 28px;
}

.nav {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.nav a {
  color: var(--text-2);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.375rem 0.75rem;
  border-radius: 6px;
}

.nav a:hover {
  color: var(--text-0);
  background: rgba(255, 255, 255, 0.04);
}

.cta {
  color: #0b0f1a;
  background: var(--yellow);
  border-radius: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 800;
  box-shadow: 0 2px 12px rgba(var(--yellow-rgb), 0.28);
}

.container {
  width: min(100% - var(--gutter) * 2, var(--max-w));
  margin: 0 auto;
}

.hero {
  padding: clamp(4.5rem, 9vw, 7rem) 0 3rem;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: end;
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8125rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

h1,
h2,
h3 {
  color: var(--text-0);
  line-height: 1.12;
  margin: 0;
}

h1 {
  max-width: 780px;
  color: var(--yellow);
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 800;
}

h2 {
  color: var(--yellow);
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.lead {
  max-width: 680px;
  margin: 1.25rem 0 0;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.hero-panel,
.content-panel,
.link-card {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(26, 34, 54, 0.82), rgba(17, 24, 39, 0.82));
  border-radius: 8px;
}

.hero-panel {
  padding: 1.25rem;
}

.stat {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 0.875rem;
  align-items: center;
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--border);
}

.stat:last-child { border-bottom: 0; }

.stat-code {
  font-family: var(--font-mono);
  color: var(--yellow);
  font-weight: 700;
}

.stat span:last-child {
  color: var(--text-0);
  font-weight: 600;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1rem 0 clamp(3rem, 7vw, 5rem);
}

.link-card {
  display: block;
  min-height: 180px;
  padding: 1.25rem;
  transition: border-color 160ms, transform 160ms, background 160ms;
}

.link-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  background: linear-gradient(180deg, rgba(30, 42, 64, 0.92), rgba(17, 24, 39, 0.9));
}

.link-card .mono {
  font-family: var(--font-mono);
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  margin-bottom: 1rem;
}

.page {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.content-panel {
  max-width: 860px;
  padding: clamp(1.25rem, 4vw, 2.5rem);
}

.content-panel p,
.content-panel li {
  margin: 0 0 0.85rem;
}

.content-panel section {
  padding-top: 1.6rem;
  margin-top: 1.6rem;
  border-top: 1px solid var(--border);
}

.content-panel section:first-of-type {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}

.content-panel a {
  color: var(--teal);
  font-weight: 600;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0 2rem;
  color: var(--text-2);
  font-size: 0.875rem;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .nav { display: none; }
}