:root{
  --bg: #ffffff;
  --bg-2: #f5f5f5;
  --accent: #f59e0b;
  --muted: #555555;
  --text: #222222;
  --radius: 12px;
  --card-border: rgba(0,0,0,0.08);
  --max-width: 980px;
  font-family: system-ui, "Noto Sans Khmer", Arial, sans-serif;
  font-size: 18px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, var(--bg), var(--bg-2) 120%);
  color: var(--text);
  line-height: 1.6;
}
.container { max-width: var(--max-width); margin: auto; padding: 22px; }

.site-header {
  padding: 24px 0;
  text-align: center;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  background: white;
}
.logo-box {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.logo {
  width: 100px;
  border-radius: 10px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.15);
  transition: .25s;
}
.logo:hover { transform: translateY(-4px) scale(1.02); }

.brand {
  margin: 0;
  font-size: 34px;
  font-weight: 900;
  background: linear-gradient(90deg, #000000, #f7d11c);
  -webkit-background-clip: text;
  color: transparent;
}

.lead {
  text-align: center;
  color: var(--muted);
  margin: 24px 0 30px;
  font-size: 20px;
  line-height: 1.5;
}

.links-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.link-card {
  background: #ffffff;
  border-radius: var(--radius);
  padding: 22px;
  border: 1px solid var(--card-border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
  transition: .2s;
}
.link-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 34px rgba(0,0,0,0.18);
  border-color: rgba(245,158,11,0.25);
}

.link-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  color: #0077ff;
}
.link-desc {
  color: #555555;
  font-size: 18px;
  line-height: 1.45;
}

.site-footer {
  margin-top: 34px;
  text-align: center;
  padding: 22px 0;
  color: #777777;
  border-top: 1px solid rgba(0,0,0,0.08);
  background: #ffffff;
  font-size: 16px;
}

@media (min-width: 720px) {
  .links-grid { grid-template-columns: repeat(2, 1fr); }
  .brand { font-size: 38px; }
}