:root { --bg: #f4f6f7; --ink: #17212b; --muted: #586572; --rule: #d6dce1; --accent: #0b5d69; --card: #ffffff; --error: #9b2c1f; }
@media (prefers-color-scheme: dark) { :root { --bg: #10161b; --ink: #e3e9ee; --muted: #9aa8b4; --rule: #2a353f; --accent: #63c4cf; --card: #161e25; --error: #f08a7a; color-scheme: dark; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 44rem; margin: 0 auto; padding: 40px max(16px, env(safe-area-inset-left, 0px)) 64px; }
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 16px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
a { color: var(--accent); }
.eyebrow { font: 500 12px/1 ui-monospace, Menlo, monospace; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.mono, pre { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 14px; }
pre { background: var(--card); border: 1px solid var(--rule); border-radius: 6px; padding: 12px; overflow-x: auto; }
.select { user-select: all; overflow-wrap: anywhere; }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 8px; padding: 20px; display: grid; gap: 10px; margin-top: 16px; }
.key { border-color: var(--accent); }
label { font-weight: 600; }
label.check { font-weight: 400; display: flex; gap: 8px; align-items: flex-start; }
input[type=email], input[type=file], textarea { font: inherit; padding: 8px; border: 1px solid var(--rule); border-radius: 6px; background: var(--bg); color: var(--ink); width: 100%; }
button { font: 600 15px/1 system-ui, sans-serif; padding: 12px 16px; border: 0; border-radius: 6px; background: var(--accent); color: var(--bg); cursor: pointer; justify-self: start; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.error { color: var(--error); }
.small { font-size: 14px; color: var(--muted); }
details { margin: 8px 0; }
summary { cursor: pointer; font-weight: 600; }