:root { color-scheme: dark; font-family: system-ui, sans-serif; background: #101827; color: #e5edf9; }
body { margin: 0; padding: 24px; }
main { max-width: 760px; margin: 24px auto; }
a { color: #8ed5ff; }
h1 { font-size: clamp(2rem, 6vw, 3rem); margin: 12px 0; }
p { line-height: 1.65; }
.eyebrow { color: #8ed5ff; letter-spacing: .12em; font-size: .8rem; margin-top: 32px; }
.toolbar { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
fieldset { border: 1px solid #52627b; border-radius: 12px; padding: 22px; margin: 24px 0; }
legend { padding: 0 8px; font-weight: 700; }
label { display: block; margin: 14px 0 8px; }
input, textarea, select { box-sizing: border-box; width: 100%; background: #19263b; color: #fff; border: 1px solid #72839d; border-radius: 6px; padding: 12px; font: inherit; }
textarea { resize: vertical; }
button { background: #92dcff; color: #101827; border: 0; border-radius: 6px; padding: 11px 16px; margin: 12px 0; font: inherit; font-weight: 650; cursor: pointer; }
button:disabled { opacity: .45; cursor: not-allowed; }
:focus-visible { outline: 3px solid #f5c56b; outline-offset: 3px; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; background: #19263b; border-radius: 12px; padding: 20px; min-height: 80px; }
.note { color: #b3c0d4; font-size: .9rem; }