*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-bg: #0f1419;
    --color-surface: #1a2332;
    --color-border: #2d3a4f;
    --color-text: #e8edf4;
    --color-muted: #8b9cb3;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 720px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(59, 130, 246, 0.06), transparent);
    pointer-events: none;
    z-index: 0;
}

.container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 1.5rem 4rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.12);
    border: 1px solid rgba(59, 130, 246, 0.25);
    border-radius: 100px;
    padding: 0.35rem 0.85rem;
    margin-bottom: 1.5rem;
}

h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.125rem;
    color: var(--color-muted);
    margin-bottom: 2.5rem;
    max-width: 56ch;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.75rem;
    margin-bottom: 2rem;
}

.card h2 {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 1rem;
}

.features {
    list-style: none;
    display: grid;
    gap: 0.65rem;
}

.features li {
    display: flex;
    align-items: flex-start;
    gap: 0.65rem;
    font-size: 0.95rem;
    color: var(--color-text);
}

.features li::before {
    content: '';
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    margin-top: 0.55rem;
}

.notice {
    font-size: 0.9rem;
    color: var(--color-muted);
    border-left: 3px solid var(--color-border);
    padding-left: 1rem;
    margin-bottom: 2.5rem;
}

.contact-section {
    margin-top: auto;
}

.contact-section p {
    font-size: 0.95rem;
    color: var(--color-muted);
    margin-bottom: 1rem;
}

.btn-contact {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.15s ease;
}

.btn-contact:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-contact:active {
    transform: translateY(0);
}

footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
    color: var(--color-muted);
    border-top: 1px solid var(--color-border);
}

@media (max-width: 480px) {
    .container {
        padding: 2rem 1.25rem 3rem;
    }

    .card {
        padding: 1.25rem;
    }
}