* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: #0a0a0f;
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    padding: 3rem 1.5rem 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, #e8a045, #f472b6, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    margin-top: 0.5rem;
    color: #888;
    font-size: 1.05rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    padding: 1rem 2rem 3rem;
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
}

.card {
    background: #15151f;
    border: 1px solid #222;
    border-radius: 16px;
    padding: 2rem 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, border-color 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--accent, #444);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4), 0 0 20px color-mix(in srgb, var(--accent) 20%, transparent);
}

.card-icon {
    font-size: 2.8rem;
    margin-bottom: 1rem;
}

.card h2 {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.4;
    color: #f0f0f0;
    margin-bottom: 0.5rem;
}

.card .author {
    font-size: 0.85rem;
    color: #777;
}

footer {
    margin-top: auto;
    text-align: center;
    padding: 2rem;
    color: #444;
    font-size: 0.85rem;
}

@media (max-width: 640px) {
    header {
        padding: 2rem 1rem 1.5rem;
    }

    header h1 {
        font-size: 1.8rem;
    }

    .grid {
        grid-template-columns: 1fr;
        padding: 0.5rem 1rem 2rem;
        gap: 1rem;
    }

    .card {
        padding: 1.5rem 1.2rem;
    }
}