body {
    margin: 0;
    min-height: 100vh;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f5f6f7;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1f2933;
}

.gate {
    background: #ffffff;
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
    max-width: 420px;
    width: 100%;
    padding: 2.5em;
    text-align: center;
}

.spinner {
    width: 42px;
    height: 42px;
    margin: 1.5em auto;
    border: 4px solid #e5e7eb;
    border-top-color: #111827;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

h2 {
    margin: 0 0 0.5em;
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    margin: 0.5em 0;
    font-size: 0.95rem;
    color: #4b5563;
}

.small {
    font-size: 0.8rem;
    color: #6b7280;
    margin-top: 1.5em;
}