:root {
  --bg: #f6f5f3; --panel: #fff; --text: #1c1917; --text2: #44403c; --muted: #78716c; --line: #e7e5e4;
  --accent: #c2410c; --accent-ink: #fff; --accent-soft: #ffedd5; --danger: #b91c1c; --r: 14px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #141210; --panel: #1f1c19; --text: #f5f5f4; --text2: #d6d3d1; --muted: #a8a29e;
    --line: #34302c; --accent: #f97316; --accent-ink: #1c1917; --accent-soft: #431407; --danger: #f87171; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 16px; max-width: 760px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.brand span { display: flex; flex-direction: column; line-height: 1.15; }
.brand small { color: var(--muted); font-size: 12px; }
#who { display: flex; align-items: center; gap: 10px; min-width: 0; }
.me { color: var(--text2); font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
main { max-width: 760px; margin: 0 auto; padding: 4px 16px 40px; display: flex; flex-direction: column; gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 20px; display: flex; flex-direction: column; gap: 12px; }
h1 { margin: 0; font-size: 22px; letter-spacing: -.01em; }
h1.hello { margin: 8px 0 0; }
h2 { margin: 0; font-size: 18px; }
p { margin: 0; color: var(--text2); }
.note { color: var(--muted); font-size: 14px; }
.note a { color: inherit; }
.err { color: var(--danger); font-size: 14px; min-height: 1em; }
.input { width: 100%; height: 46px; padding: 0 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit; }
.input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.btn { height: 46px; padding: 0 18px; border-radius: 10px; border: 1px solid var(--line); background: var(--panel); color: var(--text); font: inherit; font-weight: 600; cursor: pointer; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.sm { height: 34px; padding: 0 12px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; }
.phead { display: flex; align-items: center; gap: 12px; }
.key { font: 700 13px ui-monospace, monospace; padding: 5px 9px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); }
.surfaces { margin: 0; padding-left: 20px; color: var(--text2); }
.skel { height: 18px; border-radius: 6px; background: var(--line); }