:root {
    --bg: #0f172a;
    --card: #020617;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --border: rgba(148,163,184,0.2);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: linear-gradient(180deg, #020617, #0f172a);
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: auto;
    padding: 60px 20px;
}

h1, h2, h3 {
    font-weight: 600;
    margin-bottom: 12px;
}

p {
    color: var(--muted);
    margin-bottom: 16px;
}

.hero {
    text-align: center;
    padding-bottom: 60px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 16px;
}

.hero p {
    font-size: 18px;
}

.btn {
    display: inline-block;
    margin-top: 24px;
    padding: 14px 28px;
    background: var(--accent);
    color: #020617;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.2s;
}

.btn:hover {
    opacity: 0.85;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
}

.card h3 {
    color: var(--accent);
    margin-bottom: 10px;
}

.section {
    margin-top: 80px;
}

footer {
    margin-top: 100px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    color: var(--muted);
}

footer p {
    margin-bottom: 10px;
}