:root {
  color-scheme: light dark;
  --bg: light-dark(#f6f4ee, #101612);
  --surface: light-dark(#fffefa, #1a241e);
  --text: light-dark(#18241c, #edf5ee);
  --muted: light-dark(#54645a, #adbbb0);
  --line: light-dark(#d5ded4, #3b4c40);
  --accent: light-dark(#1e5939, #a3dfb2);
  --accent-text: light-dark(#fff, #14251a);
  --danger: light-dark(#9a3029, #ffaca2);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.55 system-ui, sans-serif; }
a { color: var(--accent); }
.site-header { max-width: 960px; margin: auto; padding: 1.6rem 1.25rem; display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.brand { font-size: 1.35rem; font-weight: 750; color: var(--text); text-decoration: none; letter-spacing: -.04em; }
.header-caption, .muted { color: var(--muted); font-size: .9rem; }
.page-shell { max-width: 960px; margin: 0 auto; padding: 2rem 1.25rem 5rem; }
.card { max-width: 620px; margin: 0 auto; padding: clamp(1.4rem, 4vw, 2.5rem); background: var(--surface); border: 1px solid var(--line); border-radius: 1rem; }
.card-wide { max-width: 800px; }
h1, h2, h3, p { margin-top: 0; }
h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; letter-spacing: -.04em; }
h2 { font-size: 1.2rem; }
.eyebrow { color: var(--accent); text-transform: uppercase; font-size: .75rem; letter-spacing: .12em; font-weight: 700; }
button, input { font: inherit; }
button, .button { display: inline-block; border: 1px solid var(--accent); border-radius: .55rem; padding: .7rem 1rem; background: var(--accent); color: var(--accent-text); font-weight: 650; cursor: pointer; text-decoration: none; }
button.secondary { background: transparent; color: var(--accent); }
button.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
button:disabled { opacity: .6; cursor: wait; }
input { width: 100%; border: 1px solid var(--line); border-radius: .5rem; padding: .65rem; background: var(--bg); color: var(--text); }
label { display: block; font-weight: 600; margin-bottom: .35rem; }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }
.stack > * + * { margin-top: 1rem; }
.section { border-top: 1px solid var(--line); margin-top: 2rem; padding-top: 1.5rem; }
.item { border: 1px solid var(--line); border-radius: .65rem; padding: 1rem; margin-top: .75rem; }
.item form { margin-top: .75rem; }
.notice { padding: .75rem 1rem; margin: 0 auto 1rem; max-width: 800px; border: 1px solid var(--line); border-radius: .5rem; }
.error { color: var(--danger); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 520px) { .header-caption { display: none; } .page-shell { padding-top: 1rem; } }