:root {
    --primary: #0f172a;
    --accent: #38bdf8;
    --bg: #f8fafc;
    --text: #1e293b;
}

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

header {
    background: var(--primary);
    color: white;
    padding: 1rem;
}

nav {
    display: flex;
    gap: 1rem;
}

nav a {
    color: white;
    text-decoration: none;
}

nav a:focus,
nav a:hover {
    outline: 2px solid var(--accent);
}

.container {
    max-width: 1000px;
    margin: auto;
    padding: 1rem;
}

.card {
    background: white;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 8px;
}

.skip-link {
    position: absolute;
    left: -999px;
}

.skip-link:focus {
    left: 10px;
    top: 10px;
    background: white;
    padding: 0.5rem;
}