body { 
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR", Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    background: #f4f6f8;
    color: #212529;
    padding: 24px;
}
.wrap {
    width: min(760px, 100%);
    display: grid;
    gap: 16px;
}
.card {
    background: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.1);
    padding: 24px;
}
h1 { margin: 0 0 8px; font-size: 24px; }
p { margin: 0 0 16px; color: #6c757d; line-height: 1.6; }
ul { padding-left: 20px; color: #6c757d; line-height: 1.6; }
li { margin-bottom: 8px; }
a.button {
    appearance: none;
    border: 1px solid #ced4da;
    background: #f8f9fa;
    color: #495057;
    padding: 10px 16px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    text-decoration: none;
    display: inline-block;
    transition: background .15s ease, border-color .15s ease;
}
a.button:hover {
    background: #e9ecef;
}