html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    background: #1f1f1f;
    color: #fff;
    font-family: 'Segoe UI', sans-serif;
}

.lt-header {
    height: 60px;
    background: #1f1f1f;
    border-bottom: 2px solid #333;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 20px;
    box-sizing: border-box;
}

.header-left {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.header-home-link {
    display: inline-block;
    line-height: 0;
}

.header-home-link:hover {
    opacity: 0.85;
}

.header-logo {
    height: 45px;
}

.header-center {
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.header-actions {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 8px;
}

.header-btn {
    background: #333;
    color: #fff;
    border: 1px solid #555;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 12px;
    text-decoration: none;
    text-transform: uppercase;
}

.header-btn:hover {
    background: #444;
}

.prep-main {
    max-width: 560px;
    margin: 4rem auto;
    padding: 0 1.5rem;
    line-height: 1.6;
}

.prep-badge {
    display: inline-block;
    margin: 0 0 1rem;
    padding: 4px 12px;
    border-radius: 4px;
    background: #1e3a28;
    border: 1px solid #2f6b45;
    color: #bff0cc;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.prep-main h1 {
    margin: 0 0 1rem;
    font-size: 1.75rem;
}

.prep-lead {
    color: #ccc;
}

.prep-lead a {
    color: #bff0cc;
}

.prep-note {
    margin-top: 1.5rem;
    font-size: 14px;
    color: #888;
}