:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-soft: #1e293b;
    --border: #334155;
    --text: #ffffff;
    --muted: #cbd5e1;
    --muted-soft: #94a3b8;
    --brand: #22c55e;
    --brand-text: #052e16;
    --danger: #ef4444;
    --warning: #f59e0b;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    color: var(--brand);
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 24px 18px;
}

.header {
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
}

.logo {
    font-size: 22px;
    font-weight: bold;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.nav a {
    color: var(--text);
    text-decoration: none;
    background: var(--panel-soft);
    padding: 9px 13px;
    border-radius: 999px;
    font-weight: bold;
    font-size: 14px;
}

.nav a:hover {
    background: var(--brand);
    color: var(--brand-text);
}

.section,
.card {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 22px;
    padding: 24px;
    margin-bottom: 18px;
}

h1, h2, h3 {
    line-height: 1.2;
    margin-top: 0;
}

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

.btn {
    display: inline-block;
    background: var(--brand);
    color: var(--brand-text);
    padding: 11px 16px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: bold;
    border: 0;
    cursor: pointer;
}

.btn.secondary {
    background: var(--panel-soft);
    color: var(--text);
}

.footer {
    text-align: center;
    color: var(--muted-soft);
    font-size: 13px;
    padding: 28px 18px;
}

@media (max-width: 760px) {
    .header-inner {
        display: block;
    }

    .nav {
        margin-top: 14px;
    }

    .nav a,
    .btn {
        width: 100%;
        text-align: center;
    }

    .section,
    .card {
        padding: 18px;
    }
}