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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #f9fafb;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --muted: #6b7280;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.site-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.header-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.logo {
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

.nav a:hover {
    opacity: 0.8;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: background-color 0.3s;
}

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

.btn.secondary {
    background-color: transparent;
    border: 2px solid white;
    color: white;
}

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

main {
    padding: 3rem 0;
}

.hero {
    text-align: center;
    padding: 3rem 0;
}

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.card h1, .card h2, .card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.lead {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.text-muted {
    color: var(--text-light);
}

.site-footer {
    background: var(--text-color);
    color: white;
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
}

.site-footer a {
    color: white;
    text-decoration: none;
}

.site-footer a:hover {
    opacity: 0.8;
}

@media (max-width: 768px) {
    header h1,
    .site-header h1 {
        font-size: 1.75rem;
    }

    header p,
    .site-header p {
        font-size: 0.9rem;
    }

    .nav {
        gap: 1rem;
    }

    .nav a {
        font-size: 0.9rem;
    }
}