:root { color-scheme: light dark; font: 16px/1.6 system-ui, sans-serif; --border: #c5d5d0; --accent: #145d52; --quiet: #526560; }
body { margin: 0; background: #f3f7f5; color: #132923; }
header { display: flex; gap: 18px; align-items: center; padding: 18px clamp(22px, 5vw, 70px); border-bottom: 1px solid var(--border); }
header span, .intro { color: var(--quiet); }
main { max-width: 680px; margin: 64px auto; padding: 0 24px; }
.eyebrow { font-weight: 650; color: var(--accent); }
.eyebrow span { margin-left: 10px; padding: 2px 9px; border: 1px solid var(--border); border-radius: 4px; font-size: .78rem; }
h1 { margin: 8px 0 10px; font-size: clamp(2rem, 6vw, 3rem); line-height: 1.18; }
h2 { margin-top: 0; font-size: 1.14rem; }
form, section { margin-top: 24px; padding: 20px; background: white; border: 1px solid var(--border); border-radius: 12px; }
label { display: block; margin-bottom: 6px; font-weight: 650; }
textarea, button { font: inherit; }
textarea { box-sizing: border-box; width: 100%; min-height: 86px; padding: 10px; border: 1px solid var(--border); border-radius: 6px; resize: vertical; }
button { cursor: pointer; border: 1px solid var(--border); background: transparent; color: inherit; padding: 6px 12px; border-radius: 6px; }
button:focus-visible, textarea:focus-visible, summary:focus-visible { outline: 3px solid #3ba293; outline-offset: 2px; }
button:disabled { opacity: .65; cursor: wait; }
.primary { background: var(--accent); border-color: transparent; color: #fff; margin-top: 9px; }
#examples { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
details { border-top: 1px solid var(--border); padding-top: 10px; }
summary { color: var(--accent); cursor: pointer; }
@media (prefers-color-scheme: dark) {
  :root { --border: #3c5751; --accent: #91dfca; --quiet: #b5c9c2; }
  body { background: #10221e; color: #edf6f2; }
  form, section { background: #172e27; }
  .primary { background: #76d1bb; color: #10221e; }
}