:root {
    color-scheme: light dark;
    --bg: #f2f2f7;
    --card: #ffffff;
    --text: #1c1c1e;
    --muted: #6c6c70;
    --accent: #0a84ff;
    --border: rgba(60, 60, 67, 0.18);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --card: #1c1c1e;
        --text: #f2f2f7;
        --muted: #98989d;
        --border: rgba(235, 235, 245, 0.18);
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 24px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text);
    font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
}

.card {
    width: 100%;
    max-width: 420px;
    padding: 32px 28px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    text-align: center;
}

.wordmark {
    margin: 0 0 24px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

h1 {
    margin: 0 0 8px;
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

p {
    margin: 0 0 16px;
}

p:last-child {
    margin-bottom: 0;
}

.muted {
    color: var(--muted);
    font-size: 15px;
}

.detail {
    margin: 20px 0;
    padding: 14px 16px;
    border-radius: 12px;
    background: var(--bg);
    font-size: 15px;
    word-break: break-word;
}

.detail strong {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    margin-bottom: 2px;
}

.button {
    display: inline-block;
    padding: 13px 24px;
    border-radius: 12px;
    background: var(--accent);
    color: #ffffff;
    font-weight: 600;
    text-decoration: none;
}

.button:active {
    opacity: 0.8;
}