:root {
    --bg-top: #071227;
    --bg-bottom: #0f355b;
    --card: #f8fafc;
    --text: #0f172a;
    --muted: #334155;
    --primary: #0ea5e9;
    --primary-strong: #0284c7;
    --ghost-border: #cbd5e1;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background: radial-gradient(circle at 20% 20%, #1d4ed8 0%, transparent 34%),
                linear-gradient(160deg, var(--bg-top), var(--bg-bottom));
}

.hero {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.card {
    width: min(680px, 100%);
    background: var(--card);
    border-radius: 20px;
    padding: 36px;
    box-shadow: 0 18px 50px rgba(2, 6, 23, 0.35);
}

.eyebrow {
    margin: 0;
    font-size: 0.9rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary-strong);
    font-weight: 700;
}

h1 {
    margin: 8px 0 10px;
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.05;
}

.subtitle {
    margin: 0;
    color: var(--muted);
    font-size: 1.06rem;
}

.actions {
    margin-top: 26px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 12px;
    padding: 12px 18px;
    font-weight: 600;
    border: 1px solid transparent;
}

.btn.primary {
    background: var(--primary);
    color: #ffffff;
}

.btn.primary:hover {
    background: var(--primary-strong);
}

.btn.ghost {
    border-color: var(--ghost-border);
    color: var(--text);
    background: #ffffff;
}

.note {
    margin: 20px 0 0;
    color: var(--muted);
    font-size: 0.95rem;
}

@media (max-width: 640px) {
    .card {
        padding: 24px;
    }

    .actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}