:root {
  --canvas: #eef2f0;
  --panel: #ffffff;
  --ink: #0e1b17;
  --muted: #617069;
  --line: #dbe5df;
  --green: #10a37f;
  --green-dark: #08775e;
  --red: #c9363e;
  --amber: #b77900;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: Inter, "Noto Sans SC", "PingFang SC", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--canvas); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  overflow-x: hidden;
  -webkit-tap-highlight-color: rgba(16, 163, 127, .18);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 10;
  background: var(--ink);
  color: #fff;
  padding: 10px 12px;
  border-radius: 3px;
}
.skip-link:focus-visible { top: 16px; outline: 3px solid var(--green); }

.topbar {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.wordmark { font-size: 20px; font-weight: 700; letter-spacing: 0; }
.status-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

main {
  width: min(680px, 100%);
  margin: 0 auto;
  padding: 48px 24px;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--green);
  margin: 0 0 12px;
}
h1 {
  margin: 0 0 12px;
  font-size: clamp(36px, 8vw, 52px);
  line-height: 1.05;
  letter-spacing: 0;
  text-wrap: balance;
}
.lead {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.6;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 28px;
  margin-bottom: 20px;
}
label {
  display: block;
  font-weight: 650;
  margin-bottom: 8px;
  font-size: 14px;
}
input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 12px;
  color: var(--ink);
  background: #fff;
  font: 600 16px var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
input:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(16, 163, 127, .35);
  outline-offset: 2px;
  border-color: var(--green);
}
.field { margin-bottom: 18px; }
.captcha-box {
  display: none;
  background: var(--canvas);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 16px;
  margin-bottom: 18px;
}
.captcha-box.visible { display: block; }
.captcha-question {
  font: 700 24px var(--mono);
  letter-spacing: .16em;
  margin-bottom: 12px;
  color: var(--green-dark);
}
.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
button {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 11px 16px;
  background: #fff;
  color: var(--ink);
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease, opacity .15s ease;
}
button:hover { border-color: var(--green); }
button:disabled { cursor: wait; opacity: .6; }
.primary { background: var(--green); color: #fff; border-color: var(--green); }
.primary:hover { background: var(--green-dark); border-color: var(--green-dark); }

.alert {
  display: none;
  border-left: 4px solid var(--red);
  background: #fff7f7;
  color: var(--red);
  padding: 14px;
  margin-top: 16px;
  line-height: 1.5;
}
.alert.visible { display: block; }
.result { display: none; border-left: 4px solid var(--green); }
.result.visible { display: block; }
.result h2 {
  margin: 0 0 18px;
  font-size: 24px;
  letter-spacing: 0;
}
.info-list { list-style: none; margin: 0; padding: 0; }
.info-item {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.info-item:last-child { border-bottom: 0; }
.info-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.info-value {
  min-width: 0;
  font: 600 14px var(--mono);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}
.totp-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.copy-row {
  display: flex;
  align-items: center;
  gap: 12px;
}
.copy-row > span:first-child,
.totp-row .totp-code {
  min-width: 0;
}
.copy-button {
  min-height: 34px;
  padding: 7px 10px;
  flex: 0 0 auto;
  font-size: 12px;
}
.totp-code {
  font-size: 26px;
  color: var(--green);
  letter-spacing: .18em;
  font-variant-numeric: tabular-nums;
}
.timer { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.copy-status {
  min-height: 20px;
  margin: 14px 0 0;
  color: var(--green-dark);
  font-size: 13px;
  font-weight: 700;
}
.notice {
  margin-top: 18px;
  color: var(--amber);
  font-size: 13px;
  line-height: 1.5;
}

@media (max-width: 560px) {
  .topbar { padding: 12px 16px; }
  main { padding: 32px 16px; }
  .panel { padding: 20px; }
  .info-item { grid-template-columns: 1fr; gap: 6px; }
  .copy-row,
  .totp-row { align-items: flex-start; }
  .button-row button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  button { transition: none; }
}