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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #f8fafc;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background: #1e293b;
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: bold;
    letter-spacing: 0.5px;
}

nav a {
    color: #cbd5e1;
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover, nav a.active {
    color: #38bdf8;
}

.container {
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
    flex: 1;
}

.hero {
    text-align: center;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
    color: #0f172a;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.card {
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.card h3 {
    margin-bottom: 0.5rem;
    color: #0f172a;
}

.btn {
    display: inline-block;
    margin-top: 1rem;
    color: #0284c7;
    text-decoration: none;
    font-weight: 600;
}

.content-page h1 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.content-page h2 {
    font-size: 1.3rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: #0f172a;
}

footer {
    text-align: center;
    padding: 1.5rem;
    background: #0f172a;
    color: #94a3b8;
    font-size: 0.9rem;
    margin-top: auto;
}