:root {
  color-scheme: light;
  --ink: #18181b;
  --muted: #6b7280;
  --line: #e6e7eb;
  --soft: #f5f6f8;
  --blue: #2563eb;
  --blue-ink: #1e3a8a;
  --ok: #065f46;
  --ok-bg: #ecfdf5;
  --ok-line: #a7f3d0;
  --warn: #9a3412;
  --warn-bg: #fff7ed;
  --warn-line: #fed7aa;
  --err: #991b1b;
  --err-bg: #fef2f2;
  --err-line: #fecaca;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  padding: calc(18px + env(safe-area-inset-top)) 16px calc(36px + env(safe-area-inset-bottom));
  background: var(--soft);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

.card {
  max-width: 520px;
  margin: 0 auto;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(24, 24, 27, 0.06);
}

h1 {
  margin: 0 0 6px;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.sub {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  color: var(--muted);
  font-size: 11.5px;
  font-weight: 600;
}

.badge.login {
  border-color: #bfdbfe;
  background: #eff6ff;
  color: var(--blue-ink);
}

.rows {
  margin: 0 0 4px;
  padding: 0;
  list-style: none;
}

.row {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid #f0f1f3;
  font-size: 14px;
}

.row:first-child {
  border-top: 0;
}

.row dt {
  flex: 0 0 74px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.row dd {
  flex: 1;
  margin: 0;
  overflow-wrap: anywhere;
}

.note {
  margin: 16px 0;
  padding: 12px;
  border: 1px solid var(--warn-line);
  border-radius: 10px;
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 13px;
  line-height: 1.65;
}

.agree {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 16px 0;
  font-size: 14px;
  line-height: 1.55;
}

.agree input {
  flex: 0 0 auto;
  width: 21px;
  height: 21px;
  margin: 1px 0 0;
  accent-color: var(--blue);
}

button {
  width: 100%;
  min-height: 50px;
  padding: 14px 16px;
  border: 0;
  border-radius: 11px;
  background: var(--blue);
  color: #fff;
  font: inherit;
  font-size: 16px;
  font-weight: 650;
  cursor: pointer;
  touch-action: manipulation;
}

button:disabled {
  background: #9ca3af;
  cursor: default;
}

button.ghost {
  margin-top: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  font-weight: 550;
}

button.ghost:disabled {
  background: var(--soft);
  color: var(--muted);
}

button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.field {
  margin: 0 0 12px;
}

.field label {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 13px;
}

.field input {
  width: 100%;
  min-height: 48px;
  padding: 12px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
}

.field input:focus {
  border-color: var(--blue);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.box {
  margin: 16px 0 0;
  padding: 12px;
  border-radius: 10px;
  font-size: 13.5px;
  line-height: 1.65;
}

.box.ok {
  border: 1px solid var(--ok-line);
  background: var(--ok-bg);
  color: var(--ok);
}

.box.err {
  border: 1px solid var(--err-line);
  background: var(--err-bg);
  color: var(--err);
}

.box.info {
  border: 1px solid #dbeafe;
  background: #eff6ff;
  color: var(--blue-ink);
}

.muted {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.timer {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.timer.low {
  color: #b91c1c;
  font-weight: 600;
}

.paste {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.paste summary {
  color: var(--blue);
  font-size: 13px;
  cursor: pointer;
}

.paste textarea {
  width: 100%;
  min-height: 84px;
  margin-top: 10px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  resize: vertical;
}

.spinner {
  display: inline-block;
  width: 13px;
  height: 13px;
  margin-right: 7px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-top-color: #fff;
  border-radius: 50%;
  vertical-align: -2px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation-duration: 2.4s;
  }
}