:root {
    color-scheme: dark;
    --bg: #050505;
    --panel: #101010;
    --line: #343434;
    --text: #f1f1f1;
    --muted: #b8b8b8;
    --red: #ff3030;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.65;
}

header {
    border-bottom: 1px solid var(--line);
    background: #090909;
}

.bar,
main,
footer {
    width: min(820px, calc(100% - 32px));
    margin: 0 auto;
}

.bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 64px;
    gap: 20px;
}

.brand {
    color: var(--text);
    font-weight: 800;
    text-decoration: none;
}

.back {
    color: var(--red);
    text-decoration: none;
}

main { padding: 54px 0 38px; }

h1 {
    margin: 0 0 8px;
    font-size: clamp(2rem, 7vw, 3.25rem);
    line-height: 1.05;
}

h2 {
    margin: 34px 0 8px;
    font-size: 1.1rem;
    color: var(--red);
}

p, li { color: var(--muted); }

.effective {
    margin: 0 0 36px;
    font-size: 0.9rem;
}

.notice {
    margin: 24px 0;
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-left: 3px solid var(--red);
    background: var(--panel);
}

a { color: #ff6969; }

footer {
    padding: 26px 0 42px;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.82rem;
}

footer a { margin-right: 16px; }

@media (max-width: 520px) {
    main { padding-top: 38px; }
    .bar { min-height: 58px; }
}