:root {
    --bg: #0f172a;
    --card-bg: #1e293b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #38bdf8;
    --border: #334155;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 960px; margin: 0 auto; padding: 0 1.5rem; }
header { background: var(--card-bg); border-bottom: 1px solid var(--border); padding: 1rem 0; }
header .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
nav a { color: var(--text-muted); text-decoration: none; margin-left: 1.5rem; font-size: 0.95rem; }
nav a:hover { color: var(--text); }
.hero { padding: 3.5rem 0 2.5rem; text-align: center; }
.hero h2 { font-size: 2rem; margin-bottom: 0.75rem; }
.hero p { color: var(--text-muted); max-width: 600px; margin: 0 auto; font-size: 1.1rem; }
.posts { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; margin: 2rem 0; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 8px; padding: 1.5rem; }
.tag { font-size: 0.75rem; text-transform: uppercase; background: rgba(56, 189, 248, 0.15); color: var(--primary); padding: 0.2rem 0.5rem; border-radius: 4px; font-weight: 600; }
.card h3 { font-size: 1.15rem; margin: 0.75rem 0 0.5rem; }
.card p { color: var(--text-muted); font-size: 0.9rem; }
footer { border-top: 1px solid var(--border); padding: 2rem 0; margin-top: 4rem; text-align: center; color: var(--text-muted); font-size: 0.85rem; }
.not-found { text-align: center; padding: 5rem 0; }