:root { --bg: #f5f7f6; --surface: #ffffff; --fg: #111111; --muted: #5a645f; --line: #e1e6e3; --accent: #007540; --bad: #c0392b; --bad-soft: #fde6e3; --warn-soft: #fff1d9; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c1210; --surface: #141c18; --fg: #e8eeeb; --muted: #98a8a0; --line: #26332d; --accent: #3fbf7f; --bad: #ff8576; --bad-soft: #2e1714; --warn-soft: #2b2112; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--bg); color: var(--fg); font: 16px/1.5 "Host Grotesk", "Segoe UI", Arial, sans-serif; border-top: 6px solid #007540; padding: 24px max(16px, env(safe-area-inset-left)) 24px max(16px, env(safe-area-inset-right)); }
.card { width: 100%; max-width: 400px; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 32px 28px; }
.brand { display: block; width: 220px; max-width: 100%; height: auto; background: #ffffff; padding: 8px 10px; border-radius: 4px; margin-bottom: 24px; }
h1 { font-weight: 400; color: var(--accent); font-size: 2rem; margin: 0 0 4px; letter-spacing: -.02em; }
p { margin: 0 0 16px; color: var(--muted); }
form { display: grid; gap: 6px; }
label { font-weight: 500; margin-top: 10px; }
input { font: inherit; color: inherit; width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 4px; background: var(--surface); }
input:focus-visible, .btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn { display: inline-block; margin-top: 18px; background: #007540; color: #ffffff; border: 0; border-radius: 4px; padding: 12px 18px; font: 500 1rem "Host Grotesk", Arial, sans-serif; cursor: pointer; text-decoration: none; text-align: center; }
.btn:hover { filter: brightness(1.1); }
.error { color: var(--bad); background: var(--bad-soft); padding: 10px 12px; border-radius: 4px; }
.warn { color: var(--fg); background: var(--warn-soft); padding: 10px 12px; border-radius: 4px; }
.small { font-size: .88rem; margin-top: 18px; }
.by { display: block; width: 110px; height: auto; margin: 20px auto 0; background: #ffffff; padding: 4px 6px; border-radius: 3px; }
code { font-family: Consolas, monospace; }