:root {
    --bg: #121212;
    --surface: #1a1a1a;
    --surface-2: #222222;
    --text: #f5f5f5;
    --muted: #a0a0a0;
    --accent: #3b82f6;
}

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

body {
    font-family: Inter, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.container {
    width: min(1100px, 90%);
    margin: auto;
}

section {
    padding: 80px 0;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 8px 16px;
    background: var(--surface-2);
    border-radius: 999px;
    margin-bottom: 20px;
    color: var(--muted);
}

h1 {
    font-size: 5rem;
    font-weight: 800;
}

h2 {
    font-size: 2rem;
    color: var(--accent);
    margin-top: 12px;
}

.hero-text {
    max-width: 700px;
    margin: 24px auto;
    font-size: 1.15rem;
    color: var(--muted);
}

.buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.btn {
    text-decoration: none;
    padding: 14px 24px;
    border-radius: 12px;
    font-weight: 600;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-secondary {
    background: var(--surface);
    color: white;
}

h3 {
    font-size: 2rem;
    margin-bottom: 32px;
}

.diagram {
    background: var(--surface);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    font-size: 1.2rem;
}

.optional {
    margin-top: 24px;
    color: var(--muted);
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(250px,1fr));
    gap: 24px;
}

.card {
    background: var(--surface);
    padding: 28px;
    border-radius: 20px;
}

.card h4 {
    margin-bottom: 12px;
}

.card p {
    color: var(--muted);
}

.status {
    list-style: none;
}

.status li {
    padding: 10px 0;
    font-size: 1.1rem;
}

.contact {
    text-align: center;
}

.contact p {
    margin-bottom: 24px;
    color: var(--muted);
}

footer {
    padding: 40px 0;
    text-align: center;
    color: var(--muted);
    border-top: 1px solid #222;
}

@media (max-width: 768px) {

    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 1.4rem;
    }
}