:root {
  color-scheme: light dark;
  --bg: #f6f6f3; --fg: #1c1c1a; --muted: #62625c; --card: #fff; --border: #d8d8d2; --code: #eeeeea;
  --accent: #2a5adf; --on-accent: #fff; --err-bg: #fbeaea; --err-fg: #a12d22;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615; --fg: #ececE8; --muted: #a3a39c; --card: #20201e; --border: #3a3a36; --code: #2a2a27;
    --accent: #8aa8ff; --on-accent: #10131c; --err-bg: #3a1c19; --err-fg: #f2a59c;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
main { max-width: 640px; margin: 0 auto; padding: 24px 16px; }
h1 { font-size: 1.6rem; margin: 16px 0 8px; }
h2 { font-size: 1.1rem; margin: 24px 0 8px; }
.card h2 { margin-top: 0; }
.lead { color: var(--muted); margin: 0 0 20px; overflow-wrap: anywhere; }
.lead b { color: var(--fg); }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 16px; overflow-wrap: anywhere; }
.card p { margin-top: 0; }
label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 4px; }
input[type=text], input[type=url] { display: block; width: 100%; padding: 10px; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--border); border-radius: 6px; }
button, .button { display: inline-block; margin-top: 12px; padding: 10px 18px; font: inherit; font-weight: 600; text-decoration: none; color: var(--on-accent); background: var(--accent); border: 1px solid var(--accent); border-radius: 6px; cursor: pointer; }
button.quiet { margin: 0; padding: 4px 10px; font-weight: 400; font-size: .85rem; color: var(--fg); background: transparent; border-color: var(--border); }
.cancel { margin-left: 12px; font-size: .9rem; color: var(--muted); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.hint { color: var(--muted); font-size: .85rem; }
.site { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 8px 0; margin-bottom: 8px; border-bottom: 1px solid var(--border); }
code { background: var(--code); padding: 1px 5px; border-radius: 4px; font-size: .88em; overflow-wrap: anywhere; }
pre { background: var(--code); padding: 12px; border-radius: 8px; overflow-x: auto; }
pre code { padding: 0; background: transparent; }
.msg { padding: 10px 14px; border-radius: 6px; margin: 0 0 14px; background: var(--code); overflow-wrap: anywhere; }
.msg.error { background: var(--err-bg); color: var(--err-fg); }
footer { max-width: 640px; margin: 0 auto; padding: 8px 16px 32px; color: var(--muted); font-size: .85rem; }