:root { color-scheme: light dark; --bg: #f5f6f8; --card: #ffffff; --text: #1d1d1f; --muted: #5f5f66; --line: rgba(60,60,67,.16);
  --blue: #0a6fe0; --blue-hover: #005bc4; --green: #1f8a3d; --red: #c3302d; --fill: rgba(118,118,128,.1); }
@media (prefers-color-scheme: dark) { :root { --bg: #111214; --card: #1c1d20; --text: #f2f2f4; --muted: #a4a4ab; --line: rgba(235,235,245,.16);
  --blue: #4a9dff; --blue-hover: #6cb0ff; --green: #4cc76b; --red: #ff6a64; --fill: rgba(118,118,128,.24); } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); }
header { max-width: 560px; margin: 0 auto; padding: 28px 16px 0; display: flex; align-items: center; gap: 10px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--text); font-weight: 650; font-size: 17px; text-decoration: none; }
.emblem { width: 30px; height: 30px; border-radius: 9px; background: #087bff; display: grid; place-items: center; }
.emblem svg { width: 17px; height: 17px; }
main { max-width: 560px; margin: 0 auto; padding: 20px 16px 48px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 28px; box-shadow: 0 10px 40px rgba(20,24,31,.06); }
h1 { margin: 0 0 8px; font-size: 24px; line-height: 1.25; letter-spacing: -.3px; }
h2 { margin: 26px 0 10px; font-size: 15px; }
p { margin: 0 0 14px; color: var(--muted); }
.eyebrow { display: block; margin-bottom: 6px; color: var(--blue); font-size: 13px; font-weight: 650; }
label { display: block; margin: 16px 0 6px; font-size: 13px; color: var(--muted); }
input[type=email], input[type=text] { width: 100%; min-height: 46px; padding: 10px 13px; border: 1px solid var(--line); border-radius: 12px; background: transparent; color: var(--text); font: inherit; }
input:focus-visible, button:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--blue) 40%, transparent); outline-offset: 2px; }
input.code { font: 600 24px/1 ui-monospace, "SF Mono", Consolas, monospace; letter-spacing: 3px; text-transform: uppercase; text-align: center; }
.button, button { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 18px; border-radius: 12px; border: 1px solid transparent; font: inherit; font-size: 15px; font-weight: 600; line-height: 1.2; cursor: pointer; text-decoration: none; }
.primary { background: var(--blue); color: #fff; }
.primary:hover { background: var(--blue-hover); }
.secondary { background: var(--fill); color: var(--text); border-color: var(--line); }
.danger { background: transparent; color: var(--red); border-color: var(--line); }
.small { min-height: 34px; padding: 6px 12px; font-size: 13px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.actions form { margin: 0; }
.full { width: 100%; margin-top: 18px; }
.notice { padding: 12px 14px; border-radius: 12px; background: var(--fill); color: var(--text); margin: 14px 0; }
.notice.error { background: color-mix(in srgb, var(--red) 12%, transparent); }
.notice.ok { background: color-mix(in srgb, var(--green) 14%, transparent); }
dl { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; margin: 18px 0 0; }
dt { color: var(--muted); } dd { margin: 0; font-weight: 550; overflow-wrap: anywhere; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; background: var(--fill); font-size: 12px; font-weight: 650; }
.badge.pro { background: #087bff; color: #fff; }
ul.devices { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
ul.devices li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
ul.devices small { display: block; color: var(--muted); }
.code-display { font: 600 26px/1 ui-monospace, "SF Mono", Consolas, monospace; letter-spacing: 3px; }
footer { max-width: 560px; margin: 0 auto; padding: 0 16px 32px; color: var(--muted); font-size: 12px; }
.hint { margin-top: 16px; }
label.check { display: flex; gap: 8px; align-items: flex-start; margin: 14px 0 0; color: var(--text); font-size: 14px; }
label.check input { margin-top: 3px; }
meter.storage { display: block; width: 100%; height: 10px; margin: 0 0 14px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }