:root {
    --bg: #0f172a;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #60a5fa;
    --border: rgba(255,255,255,0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(180deg, #020617, var(--bg));
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
}

main {
    max-width: 520px;
    width: 100%;
    padding: 2rem;
}

section {
    margin-bottom: 3rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

h1 {
    margin: 0 0 1rem;
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: 0.2px;
}

p {
    margin: 0.5rem 0;
    line-height: 1.5;
}

.muted {
    color: var(--muted);
    font-size: 0.95rem;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.5rem 0;
}

footer {
    font-size: 0.85rem;
    color: var(--muted);
}