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

:root {
    --color-bg: #0d0d0d;
    --color-text: #e8e8e8;
    --color-accent: #ff3c3c;
    --font-main: system-ui, -apple-system, sans-serif;
}

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    padding: 1.25rem 2rem;
    border-bottom: 1px solid #1e1e1e;
}

nav .logo {
    text-decoration: none;
    color: var(--color-accent);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

main {
    flex: 1;
    padding: 2rem;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

footer {
    padding: 1.25rem 2rem;
    border-top: 1px solid #1e1e1e;
    text-align: center;
    font-size: 0.85rem;
    color: #666;
}

h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 1.75rem; margin-bottom: 0.75rem; }
p  { line-height: 1.7; margin-bottom: 1rem; }