:root {
    --primary: #3b82f6;
    --text: #1e293b;
    --bg: #f8fafc;
    --card: #ffffff;
}

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

header {
    background: var(--card);
    border-bottom: 1px solid #e2e8f0;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary);
    text-decoration: none;
}

main {
    max-width: 800px;
    margin: 3rem auto;
    padding: 0 1.5rem;
}

h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { margin-top: 2rem; color: #334155; }
p { margin-bottom: 1rem; color: #475569; }

.btn {
    display: inline-block;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    margin-top: 1rem;
}

.card {
    background: var(--card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #94a3b8;
    font-size: 0.9rem;
}

footer a { color: var(--primary); text-decoration: none; margin: 0 0.5rem; }