:root {
    --brand: #0a5ca8;
    --bg: #f5f7fa;
    --text: #1c2733;
    --muted: #5a6b7b;
    --border: #e2e8f0;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    flex-wrap: wrap;
}
.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--brand);
    text-decoration: none;
}
.nav a {
    margin-left: 20px;
    color: var(--text);
    text-decoration: none;
}
.nav a:hover { color: var(--brand); }

main.container { padding-top: 32px; padding-bottom: 48px; min-height: 60vh; }

.hero {
    background: var(--brand);
    color: #fff;
    padding: 48px 24px;
    border-radius: 12px;
    margin-bottom: 24px;
}
.hero h1 { margin: 0; }

.content { background: #fff; padding: 24px; border-radius: 12px; }
.content img { max-width: 100%; height: auto; }

.site-footer {
    background: #fff;
    border-top: 1px solid var(--border);
    color: var(--muted);
    padding: 20px 0;
}

@media (max-width: 600px) {
    .site-header .container { flex-direction: column; align-items: flex-start; gap: 8px; }
    .nav a { margin: 0 16px 0 0; }
}