:root {
    --bg: #0b0f14;
    --card: #111827;
    --accent: #22d3ee;
    --text: #e5e7eb;
    --muted: #9ca3af;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

header {
    padding: 4rem 1.5rem;
    text-align: center;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

header p {
    color: var(--muted);
    max-width: 600px;
    margin: 0 auto;
}

nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
}

nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: var(--accent);
}

section {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

h2 {
    color: var(--accent);
    margin-bottom: 1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.card h3 {
    margin-top: 0;
}

footer {
    text-align: center;
    padding: 2rem;
    color: var(--muted);
    border-top: 1px solid #1f2933;
}

.tag {
    display: inline-block;
    background: rgba(34, 211, 238, 0.1);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.8rem;
    margin-right: 0.4rem;
}