:root {
  --dtr-teal: #0f4f4b;
  --dtr-teal-soft: #f0fdfa;
  --dtr-teal-mid: #115e59;
  --dtr-border: #e4e4e7;
  --dtr-muted: #71717a;
  --dtr-bg: #f4f4f5;
  --dtr-surface: #fff;
  --dtr-radius: 1rem;
  --dtr-radius-sm: 0.65rem;
  --dtr-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
* { box-sizing: border-box; }
body.dtr {
  margin: 0;
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--dtr-bg);
  color: #18181b;
  line-height: 1.5;
}
.dtr-wrap { max-width: 40rem; margin: 0 auto; padding: 1rem 1rem 2.5rem; }
.dtr-wrap-wide { max-width: 56rem; margin: 0 auto; padding: 1rem 1rem 2.5rem; }
.dtr-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.65rem 0 1rem;
  border-bottom: 1px solid var(--dtr-border);
  margin-bottom: 1rem;
}
.dtr-brand { display: flex; align-items: center; gap: 0.5rem; text-decoration: none; color: inherit; }
.dtr-mark {
  width: 2rem; height: 2rem; border-radius: 0.55rem;
  background: var(--dtr-teal); color: #fff; font-weight: 700; font-size: 0.6875rem;
  display: inline-flex; align-items: center; justify-content: center;
}
.dtr-brand-title { font-size: 0.9375rem; font-weight: 600; margin: 0; }
.dtr-brand-sub { font-size: 0.6875rem; color: var(--dtr-muted); margin: 0; }
.dtr-nav-links { display: flex; flex-wrap: wrap; gap: 0.35rem 0.75rem; font-size: 0.75rem; }
.dtr-nav-links a { color: var(--dtr-teal); font-weight: 600; text-decoration: none; }
.dtr-nav-links a[aria-current="page"] { text-decoration: underline; }
.dtr-card {
  background: var(--dtr-surface);
  border: 1px solid var(--dtr-border);
  border-radius: var(--dtr-radius);
  padding: 1.15rem 1.25rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--dtr-shadow);
}
.dtr-card h1 { margin: 0.25rem 0 0; font-size: 1.35rem; font-weight: 600; letter-spacing: -0.02em; }
.dtr-card h2 { margin: 0 0 0.5rem; font-size: 0.9375rem; font-weight: 600; }
.dtr-lead { margin: 0.35rem 0 0; font-size: 0.875rem; color: var(--dtr-muted); }
.dtr-badge {
  display: inline-block; font-size: 0.625rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.05em; padding: 0.2rem 0.45rem; border-radius: 999px;
  background: var(--dtr-teal-soft); color: var(--dtr-teal);
}
.dtr-progress { display: flex; gap: 0.35rem; margin: 1rem 0 0.25rem; }
.dtr-step { flex: 1; height: 4px; border-radius: 999px; background: #e4e4e7; }
.dtr-step.on { background: var(--dtr-teal); }
.dtr-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: 0.75rem; }
.dtr-chip { font-size: 0.75rem; padding: 0.25rem 0.55rem; border-radius: 999px; background: var(--dtr-teal-soft); color: var(--dtr-teal); }
.dtr-label {
  display: block; margin-top: 0.85rem; font-size: 0.625rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--dtr-muted);
}
.dtr-label:first-of-type { margin-top: 0; }
.dtr-input, .dtr-select {
  width: 100%; margin-top: 0.3rem; padding: 0.6rem 0.7rem;
  border: 1px solid var(--dtr-border); border-radius: var(--dtr-radius-sm); font-size: 0.9375rem;
}
.dtr-input:focus, .dtr-select:focus { outline: 2px solid #99f6e4; border-color: var(--dtr-teal); }
.dtr-btn {
  display: inline-block; text-align: center; padding: 0.7rem 1rem; border-radius: var(--dtr-radius-sm);
  font-size: 0.9375rem; font-weight: 600; text-decoration: none; cursor: pointer; border: 1px solid var(--dtr-border); background: #fff;
}
.dtr-btn-primary { background: var(--dtr-teal); color: #fff; border-color: var(--dtr-teal); width: 100%; }
.dtr-btn-ghost { background: #fff; color: #3f3f46; width: 100%; }
.dtr-actions { display: flex; flex-direction: column; gap: 0.45rem; margin-top: 1rem; }
.dtr-warn { padding: 0.65rem 0.85rem; background: #fffbeb; border: 1px solid #fde68a; border-radius: var(--dtr-radius-sm); font-size: 0.8125rem; color: #92400e; }
.dtr-err { margin-top: 0.5rem; font-size: 0.75rem; color: #b91c1c; display: none; }
.dtr-steps { margin: 0.5rem 0 0; padding-left: 1.15rem; font-size: 0.8125rem; color: #3f3f46; }
.dtr-steps li { margin: 0.3rem 0; }
.dtr-footer { text-align: center; font-size: 0.625rem; color: var(--dtr-muted); margin-top: 1.25rem; }
.dtr-product { display: flex; justify-content: space-between; gap: 0.5rem; padding: 0.65rem 0.75rem; border: 1px solid var(--dtr-border); border-radius: var(--dtr-radius-sm); font-size: 0.8125rem; cursor: pointer; margin-bottom: 0.4rem; }
.dtr-product:hover { border-color: #5eead4; }
.dtr-product.selected { border-color: var(--dtr-teal); background: var(--dtr-teal-soft); }
.dtr-product.unavailable { opacity: 0.5; cursor: not-allowed; }
.dtr-stat-grid { display: grid; gap: 0.75rem; grid-template-columns: repeat(2, 1fr); margin-bottom: 1rem; }
@media (min-width: 640px) { .dtr-stat-grid { grid-template-columns: repeat(4, 1fr); } }
.dtr-stat .n { font-size: 1.5rem; font-weight: 600; }
.dtr-stat .l { font-size: 0.6875rem; color: var(--dtr-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.dtr-auth-wrap { max-width: 24rem; margin: 1.5rem auto 0; }
.dtr-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem; margin-bottom: 0.75rem; }
.dtr-auth-tabs { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.dtr-auth-tabs button { flex: 1; }
.dtr-auth-tabs button.active { background: var(--dtr-teal); color: #fff; border-color: var(--dtr-teal); }
.dtr-row2 { display: grid; gap: 0.75rem; }
@media (min-width: 520px) { .dtr-row2 { grid-template-columns: 1fr 1fr; } }
.dtr-inline-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; align-items: center; }
.dtr-inline-actions .dtr-btn { width: auto; }
.dtr-ok-msg { margin-top: 0.5rem; font-size: 0.75rem; color: #047857; display: none; }
.dtr-table { width: 100%; border-collapse: collapse; font-size: 0.8125rem; }
.dtr-table th { text-align: left; font-size: 0.625rem; text-transform: uppercase; color: var(--dtr-muted); padding: 0.5rem 0.4rem; border-bottom: 1px solid var(--dtr-border); }
.dtr-table td { padding: 0.6rem 0.4rem; border-bottom: 1px solid #f4f4f5; vertical-align: top; }
.dtr-mono { font-family: ui-monospace, monospace; font-size: 0.6875rem; }
.dtr-pill { display: inline-block; padding: 0.125rem 0.4rem; border-radius: 999px; font-size: 0.625rem; background: #ecfdf5; color: #065f46; }
.dtr-empty { font-size: 0.8125rem; color: var(--dtr-muted); padding: 1rem 0; }
.dtr-qr-wrap { display: flex; flex-wrap: wrap; gap: 1rem; align-items: flex-start; margin-top: 1rem; padding: 1rem; background: #fafafa; border-radius: 0.75rem; border: 1px solid var(--dtr-border); }
.dtr-qr-wrap img { border-radius: 0.5rem; border: 1px solid var(--dtr-border); }
.dtr-link-box { flex: 1; min-width: 12rem; font-size: 0.6875rem; word-break: break-all; font-family: ui-monospace, monospace; color: #3f3f46; }
.dtr-user-chip { font-size: 0.8125rem; color: var(--dtr-muted); text-align: right; }
.dtr-user-chip strong { color: #18181b; }
.dtr-text-link { color: var(--dtr-teal); font-size: 0.8125rem; background: none; border: none; padding: 0; text-decoration: underline; cursor: pointer; font-weight: 600; }
.dtr-scroll { overflow-x: auto; }
.dtr-mock-banner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.75rem;
  padding: 0.55rem 0.75rem; margin-bottom: 0.75rem; border-radius: var(--dtr-radius-sm);
  background: #fef3c7; border: 1px solid #fcd34d; font-size: 0.75rem; color: #92400e;
}
.dtr-mock-banner strong { color: #78350f; }
.dtr-mock-banner a { color: var(--dtr-teal); font-weight: 600; }
.dtr-mock-off {
  margin-left: auto; padding: 0.25rem 0.5rem; border-radius: 0.4rem; border: 1px solid #fcd34d;
  background: #fff; font-size: 0.6875rem; font-weight: 600; cursor: pointer; color: #92400e;
}
.dtr-kv { margin: 0.75rem 0 0; display: grid; gap: 0.35rem; font-size: 0.8125rem; }
.dtr-kv div { display: flex; justify-content: space-between; gap: 0.75rem; padding: 0.35rem 0; border-bottom: 1px solid #f4f4f5; }
.dtr-kv dt { color: var(--dtr-muted); font-weight: 600; text-transform: uppercase; font-size: 0.625rem; letter-spacing: 0.04em; }
.dtr-kv dd { margin: 0; text-align: right; }
.dtr-code {
  font-family: ui-monospace, monospace; font-size: 0.75rem; padding: 0.65rem 0.75rem;
  background: #fafafa; border: 1px solid var(--dtr-border); border-radius: var(--dtr-radius-sm);
}
.dtr-home-signin {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem; padding-top: 1rem;
  border-top: 1px solid var(--dtr-border); font-size: 0.8125rem;
}
.dtr-home-signin a {
  color: var(--dtr-teal); font-weight: 600; text-decoration: none; padding: 0.45rem 0.75rem;
  border: 1px solid var(--dtr-border); border-radius: var(--dtr-radius-sm); background: #fff;
}
.dtr-home-signin a:hover { border-color: #5eead4; }
.dtr-welcome {
  padding: 0.85rem 1rem; margin-top: 0.75rem; border-radius: var(--dtr-radius-sm);
  background: linear-gradient(135deg, var(--dtr-teal-soft) 0%, #fff 100%);
  border: 1px solid #99f6e4;
}
.dtr-welcome h2 { margin: 0 0 0.35rem; font-size: 1.05rem; font-weight: 600; color: var(--dtr-teal); }
.dtr-welcome p { margin: 0.35rem 0 0; font-size: 0.875rem; color: #3f3f46; line-height: 1.55; }
.dtr-benefits { margin: 0.75rem 0 0; padding: 0; list-style: none; }
.dtr-benefits li {
  position: relative; padding: 0.35rem 0 0.35rem 1.15rem; font-size: 0.8125rem; color: #3f3f46;
}
.dtr-benefits li::before {
  content: "✓"; position: absolute; left: 0; color: var(--dtr-teal); font-weight: 700; font-size: 0.75rem;
}
.dtr-benefits-title { margin: 0.85rem 0 0.25rem; font-size: 0.6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--dtr-muted); }
[hidden] { display: none !important; }