* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, -apple-system, sans-serif; min-height: 100vh; padding: 24px 16px; line-height: 1.5; font-size: 16px; }
main { margin: 0 auto; }
section { padding: 24px 0; margin-bottom: 16px; }
h1 { font-size: 24px; margin-bottom: 8px; }
h2 { font-size: 20px; margin-bottom: 24px; }
p { margin-bottom: 24px; font-size: 16px; }
nav { display: flex; gap: 16px; padding: 16px 0; margin-bottom: 8px; }
nav a { text-decoration: none; font-size: 16px; padding: 8px 16px; }
table { border-collapse: collapse; margin-top: 16px; }
th, td { padding: 16px 8px; text-align: left; font-size: 16px; }
button, a[role="button"] { padding: 8px 24px; border: none; cursor: pointer; font-family: inherit; font-size: 16px; text-decoration: none; display: inline-block; }
label { display: block; margin-bottom: 8px; font-size: 16px; }
input[type="text"] { padding: 8px 16px; border: none; font-size: 16px; font-family: inherit; }
input[type="text"]:focus { outline: none; }
fieldset { border: none; margin-bottom: 16px; }
aside { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
article { padding: 24px 0; }
article strong { display: block; font-size: 32px; margin-bottom: 8px; }
article span { font-size: 16px; }
ul { list-style: none; }
ul li { margin-bottom: 8px; padding: 8px 0; font-size: 16px; }
ruby { ruby-position: over; }
rt { font-size: 12px; }
output { display: block; padding: 16px 0; margin-top: 16px; font-size: 16px; }
figure { padding: 24px 0; }
figure b { display: block; font-size: 48px; margin-bottom: 8px; }
figure b rt { font-size: 16px; }
figure em { display: block; font-size: 16px; margin-bottom: 8px; font-style: normal; }
figure mark { display: inline-block; font-size: 16px; padding: 0; margin-bottom: 24px; }
figure input[type="text"] { font-size: 16px; }
div[role="alert"] { padding: 16px 0; margin-bottom: 16px; }
@media (max-width: 480px) {
    aside { grid-template-columns: 1fr; }
    figure b { font-size: 32px; }
    nav { flex-wrap: wrap; gap: 8px; }
    section { padding: 16px 0; }
}