:root {
  --primary: #1a3a5c;
  --accent: #2980b9;
  --bg: #f8f9fa;
  --text: #2c3e50;
  --light: #ecf0f1;
  --radius: 8px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', system-ui, sans-serif; color: var(--text); background: var(--bg); line-height: 1.7; }
header { background: var(--primary); color: #fff; padding: 2rem 1rem; text-align: center; }
header h1 { font-size: 2.4rem; letter-spacing: 1px; }
header p { opacity: .85; margin-top: .4rem; }
nav { background: var(--accent); text-align: center; padding: .6rem; }
nav a { color: #fff; text-decoration: none; margin: 0 1rem; font-weight: 600; font-size: .95rem; }
nav a:hover { text-decoration: underline; }
.container { max-width: 960px; margin: 2.5rem auto; padding: 0 1.2rem; }
section { margin-bottom: 2.5rem; }
h2 { color: var(--primary); border-bottom: 2px solid var(--accent); padding-bottom: .4rem; margin-bottom: 1rem; }
.card { background: #fff; border-radius: var(--radius); box-shadow: 0 2px 8px rgba(0,0,0,.08); padding: 1.5rem; margin-bottom: 1.2rem; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
@media(max-width:600px) { .grid2 { grid-template-columns: 1fr; } header h1 { font-size: 1.7rem; } }
.btn { display: inline-block; background: var(--accent); color: #fff; padding: .6rem 1.4rem; border-radius: 4px; text-decoration: none; font-weight: 600; }
.tag { display: inline-block; background: var(--light); border-radius: 20px; padding: .2rem .8rem; font-size: .85rem; margin: .2rem; }
footer { background: var(--primary); color: #aaa; text-align: center; padding: 1.5rem; margin-top: 3rem; font-size: .88rem; }
footer a { color: #7fb3d3; text-decoration: none; }