:root { color-scheme: light dark; --bg: #f4f5f7; --card: #ffffff; --fg: #1b1f24; --muted: #5b6573; --line: #c9d0d9; --accent: #1f5fbf; --ok: #14663a; --err-bg: #fdecec; --err-fg: #8a1c1c; }
@media (prefers-color-scheme: dark) { :root { --bg: #14171b; --card: #1d2228; --fg: #e8ecf1; --muted: #9aa5b3; --line: #39424d; --accent: #6aa6ff; --ok: #5fd38f; --err-bg: #3a1d1d; --err-fg: #ffb4b4; } }
* { box-sizing: border-box; }
body { margin: 0; padding: 24px 16px; background: var(--bg); color: var(--fg); font: 16px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 760px; margin: 0 auto; }
section { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin: 0 0 16px; }
h1 { margin: 0 0 6px; font-size: 1.5rem; }
h2 { margin: 0 0 10px; font-size: 1.05rem; }
p { margin: 0 0 10px; }
.muted { color: var(--muted); font-size: .9rem; }
.ok { color: var(--ok); font-weight: 600; }
.error { padding: 10px 12px; border-radius: 6px; background: var(--err-bg); color: var(--err-fg); }
a.btn, button { display: inline-block; padding: 11px 18px; font: inherit; font-weight: 600; color: #ffffff; background: var(--accent); border: 0; border-radius: 6px; text-decoration: none; cursor: pointer; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 5px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { width: 34%; color: var(--muted); font-weight: 600; }
td { font-family: ui-monospace, Consolas, monospace; word-break: break-all; }
pre { margin: 0; padding: 10px 12px; overflow-x: auto; font: .88rem/1.4 ui-monospace, Consolas, monospace; border: 1px solid var(--line); border-radius: 6px; }
form.inline { display: inline-block; margin: 12px 8px 0 0; }
.result { margin-top: 14px; padding: 10px 14px; border: 1px solid var(--line); border-radius: 6px; }
.result h3 { margin: 0 0 6px; font-size: 1rem; }
.result ul { margin: 0; padding-left: 20px; }