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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    background: #0a0a0a;
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.7;
}

main {
    max-width: 640px;
    padding: 3rem 2rem;
}

h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

p, li {
    font-size: 0.95rem;
    color: #b0b0b0;
    margin-bottom: 1rem;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding-left: 1rem;
    position: relative;
}

ul li::before {
    content: "\2014";
    position: absolute;
    left: 0;
    color: #555;
}

nav {
    margin-top: 2rem;
    display: flex;
    gap: 1.5rem;
}

nav a, a {
    color: #888;
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s;
}

nav a:hover, a:hover {
    color: #fff;
}

section {
    margin-bottom: 2.5rem;
}

.back {
    display: inline-block;
    margin-bottom: 2rem;
    color: #555;
    font-size: 0.85rem;
}

.back:hover {
    color: #fff;
}