:root { color-scheme: light dark; --bg:#f2f2f7; --card:#ffffff; --ink:#111111; --sub:#6b6b70; --line:#d8d8dc; --accent:#0a84ff; }
@media (prefers-color-scheme: dark) { :root { --bg:#000000; --card:#1c1c1e; --ink:#f5f5f7; --sub:#98989d; --line:#38383a; --accent:#0a84ff; } }
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; -webkit-text-size-adjust: 100%; }
main { max-width: 480px; margin: 0 auto; padding: calc(env(safe-area-inset-top) + 16px) 16px calc(env(safe-area-inset-bottom) + 24px); }
h1 { margin: 8px 0 0; font-size: 28px; }
h2 { margin: 0 0 8px; font-size: 17px; }
.sub { color: var(--sub); margin: 2px 0 12px; }
.card { background: var(--card); border-radius: 14px; padding: 16px; margin: 12px 0; }
button { font: inherit; border: 0; border-radius: 10px; padding: 12px 16px; background: var(--accent); color: #fff; min-height: 44px; }
button.plain { background: transparent; color: var(--accent); padding: 8px 4px; }
input { font: inherit; font-size: 16px; width: 100%; padding: 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); margin-bottom: 8px; }
ul { list-style: none; margin: 12px 0; padding: 0; }
li { display: flex; justify-content: space-between; gap: 8px; align-items: center; padding: 8px 0; border-top: 1px solid var(--line); }
dl { margin: 0; display: grid; grid-template-columns: 1fr auto; row-gap: 6px; }
dt { color: var(--sub); }
dd { margin: 0; text-align: right; }
code { font-family: ui-monospace, Menlo, monospace; font-size: 14px; }
#msg { color: #d70015; min-height: 1.4em; }
[hidden] { display: none !important; }