:root {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --primary: #2563eb;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 60px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.container {
    max-width: 900px;
    width: 100%;
    text-align: center;
}

header {
    margin-bottom: 40px;
}

header h1 {
    font-size: 28px;
    font-weight: 800;
    color: #1e293b;
    margin: 0 0 10px 0;
}

header p {
    color: var(--text-muted);
    font-size: 15px;
    margin: 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    text-decoration: none;
    color: inherit;
    text-align: left;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    transition: all 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 10px 15px -3px rgba(37, 99, 235, 0.1);
}

.card h3 {
    font-size: 18px;
    margin: 0 0 8px 0;
    color: #1e293b;
}

.card p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0 0 20px 0;
    line-height: 1.5;
}

.card .badge {
    font-size: 11px;
    font-weight: 700;
    background: #eff6ff;
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 20px;
    align-self: flex-start;
}