:root {
  color-scheme: dark;
  font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #07110e;
  color: #ecf8f2;
}

body { margin: 0; min-height: 100vh; background: radial-gradient(circle at top, #173b31, #07110e 52%); }
main { width: min(44rem, calc(100% - 2rem)); margin: 0 auto; padding: 3rem 0 5rem; }
header, section { background: rgba(9, 25, 20, .92); border: 1px solid #2c5549; border-radius: 1rem; padding: 1.25rem; box-shadow: 0 1rem 3rem rgba(0,0,0,.24); }
section { margin-top: 1rem; }
h1, h2, p { margin-top: 0; }
.eyebrow { color: #8ce5bf; font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
#boundary { color: #b6d4c8; margin-bottom: 0; }
label { display: block; margin: 1rem 0 .4rem; color: #c9e5da; }
input, select, textarea, button { box-sizing: border-box; width: 100%; border-radius: .65rem; font: inherit; }
input, select, textarea { border: 1px solid #456e61; background: #091814; color: #f6fffb; padding: .8rem; }
textarea { resize: vertical; }
button { margin-top: .8rem; border: 0; padding: .85rem 1rem; background: #56d6a5; color: #07110e; font-weight: 750; }
button:disabled { opacity: .42; }
button.secondary { width: auto; margin: 0; background: #243d35; color: #e9f7f1; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
pre { min-height: 4rem; overflow: auto; border-radius: .65rem; background: #040a08; padding: .8rem; white-space: pre-wrap; }