:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #0f172a;
    --text-muted: #475569;
    --primary-blue: #0b1d3a;
    --accent-red: #d93829;
    --border-color: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Thin Corporate Navbar */
.navbar {
    background: var(--primary-blue);
    padding: 0.75rem 0;
    color: #cbd5e1;
    font-size: 0.9rem;
}
.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.brand-name {
    color: #ffffff;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* White Hero Section */
.hero {
    background-color: #ffffff;
    padding: 4rem 0 3rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}
.hero-logo {
    height: 140px;
    width: auto;
    margin-bottom: 1.5rem;
}
.hero h1 {
    font-size: 2.75rem;
    margin-bottom: 0.5rem;
    color: var(--primary-blue);
}
.hero .tagline {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
}

/* Sections */
.section {
    padding: 4rem 0;
    border-bottom: 1px solid var(--border-color);
}
.section h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-blue);
}

/* Grids */
.grid {
    display: grid;
    gap: 1.5rem;
}
@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Cards */
.card, .tier-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
.card h3, .tier-card h3 {
    margin-top: 0;
    color: var(--primary-blue);
}

/* Sovereign Tier Highlight */
.tier-sovereign {
    border-left: 4px solid var(--accent-red);
}

/* Footer */
.footer {
    background: var(--primary-blue);
    color: #94a3b8;
    text-align: center;
    padding: 2rem 0;
    font-size: 0.9rem;
}