:root {
  --dtr-teal: #0d5c56;
  --dtr-teal-deep: #084540;
  --dtr-teal-soft: #ecfdf8;
  --dtr-teal-mid: #14b8a6;
  --dtr-teal-glow: rgba(20, 184, 166, 0.22);
  --dtr-border: #e2e8f0;
  --dtr-muted: #64748b;
  --dtr-bg: #f1f5f9;
  --dtr-surface: #fff;
  --dtr-radius: 1.125rem;
  --dtr-radius-sm: 0.75rem;
  --dtr-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
  --dtr-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --dtr-touch: 2.75rem;
  --dtr-font: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body.dtr {
  margin: 0;
  font-family: var(--dtr-font);
  background:
    radial-gradient(ellipse 120% 80% at 50% -20%, var(--dtr-teal-glow), transparent 55%),
    linear-gradient(180deg, #f8fafc 0%, var(--dtr-bg) 100%);
  color: #0f172a;
  line-height: 1.5;
  min-height: 100dvh;
}

.dtr-wrap {
  max-width: 28rem;
  margin: 0 auto;
  padding: max(0.75rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(2rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}
.dtr-wrap-wide {
  max-width: 56rem;
  margin: 0 auto;
  padding: max(0.75rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(2rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}

/* ── Nav ── */
.dtr-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.5rem 0 1rem;
  margin-bottom: 0.25rem;
}
.dtr-brand { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; color: inherit; min-width: 0; }
.dtr-mark {
  flex-shrink: 0;
  width: 2.35rem; height: 2.35rem; border-radius: 0.7rem;
  background: linear-gradient(145deg, var(--dtr-teal-mid), var(--dtr-teal-deep));
  color: #fff; font-weight: 700; font-size: 0.7rem; letter-spacing: -0.02em;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px var(--dtr-teal-glow);
}
.dtr-brand-title { font-size: 1rem; font-weight: 700; margin: 0; letter-spacing: -0.02em; }
.dtr-brand-sub { font-size: 0.6875rem; color: var(--dtr-muted); margin: 0; }
.dtr-nav-links {
  display: flex; flex-wrap: nowrap; gap: 0.35rem;
  overflow-x: auto; -webkit-overflow-scrolling: touch;
  scrollbar-width: none; max-width: 100%;
  padding: 0.15rem 0;
}
.dtr-nav-links::-webkit-scrollbar { display: none; }
.dtr-nav-links a {
  flex-shrink: 0;
  color: var(--dtr-teal); font-weight: 600; font-size: 0.8125rem; text-decoration: none;
  padding: 0.4rem 0.7rem; border-radius: 999px;
  background: rgba(255, 255, 255, 0.85); border: 1px solid var(--dtr-border);
}
.dtr-nav-links a[aria-current="page"] {
  background: var(--dtr-teal); color: #fff; border-color: var(--dtr-teal);
}

/* ── Cards & hero ── */
.dtr-card {
  background: var(--dtr-surface);
  border: 1px solid var(--dtr-border);
  border-radius: var(--dtr-radius);
  padding: 1.25rem 1.2rem;
  margin-bottom: 0.85rem;
  box-shadow: var(--dtr-shadow);
}
.dtr-card-hero {
  border: none;
  background: linear-gradient(155deg, #fff 0%, var(--dtr-teal-soft) 100%);
  box-shadow: var(--dtr-shadow-md);
  padding: 1.35rem 1.25rem 1.25rem;
}
.dtr-card h1 { margin: 0.4rem 0 0; font-size: clamp(1.45rem, 5vw, 1.65rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1.2; }
.dtr-card h2 { margin: 0 0 0.35rem; font-size: 1.05rem; font-weight: 700; letter-spacing: -0.02em; }
.dtr-lead { margin: 0.5rem 0 0; font-size: 0.9375rem; color: var(--dtr-muted); line-height: 1.55; }
.dtr-hint { margin: 0.65rem 0 0; font-size: 0.8125rem; color: var(--dtr-muted); line-height: 1.45; }

.dtr-badge {
  display: inline-block; font-size: 0.625rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 0.28rem 0.55rem; border-radius: 999px;
  background: rgba(255, 255, 255, 0.9); color: var(--dtr-teal); border: 1px solid #99f6e4;
}

/* ── Progress ── */
.dtr-progress {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.35rem;
  margin: 1.15rem 0 0;
}
.dtr-progress-item { text-align: center; }
.dtr-progress-track {
  height: 5px; border-radius: 999px; background: #e2e8f0; margin-bottom: 0.35rem; overflow: hidden;
}
.dtr-progress-fill {
  height: 100%; width: 0%; border-radius: 999px; background: var(--dtr-teal-mid);
  transition: width 0.25s ease;
}
.dtr-progress-item.on .dtr-progress-fill { width: 100%; }
.dtr-progress-item.on .dtr-progress-label { color: var(--dtr-teal); font-weight: 700; }
.dtr-progress-label { font-size: 0.625rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--dtr-muted); }

.dtr-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.85rem; }
.dtr-chip {
  font-size: 0.75rem; font-weight: 600; padding: 0.3rem 0.65rem; border-radius: 999px;
  background: #fff; color: var(--dtr-teal); border: 1px solid #99f6e4;
}

/* ── Forms ── */
.dtr-label {
  display: block; margin-top: 1rem; font-size: 0.6875rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--dtr-muted);
}
.dtr-label:first-of-type { margin-top: 0; }
.dtr-input, .dtr-select {
  width: 100%; margin-top: 0.4rem; padding: 0.8rem 0.85rem; min-height: var(--dtr-touch);
  border: 1.5px solid var(--dtr-border); border-radius: var(--dtr-radius-sm);
  font-size: 1rem; font-family: inherit; background: #fff;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.dtr-input:focus, .dtr-select:focus {
  outline: none; border-color: var(--dtr-teal-mid);
  box-shadow: 0 0 0 3px var(--dtr-teal-glow);
}
.dtr-input::placeholder { color: #94a3b8; }

.dtr-btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: var(--dtr-touch); padding: 0.75rem 1.1rem;
  border-radius: var(--dtr-radius-sm); font-size: 1rem; font-weight: 700;
  font-family: inherit; text-decoration: none; cursor: pointer;
  border: 1.5px solid var(--dtr-border); background: #fff;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  -webkit-tap-highlight-color: transparent;
}
.dtr-btn:active { transform: scale(0.98); }
.dtr-btn-primary {
  background: linear-gradient(180deg, var(--dtr-teal-mid) 0%, var(--dtr-teal) 100%);
  color: #fff; border-color: var(--dtr-teal);
  box-shadow: 0 4px 14px var(--dtr-teal-glow);
  width: 100%;
}
.dtr-btn-ghost { background: #fff; color: #334155; width: 100%; }
.dtr-actions { display: flex; flex-direction: column; gap: 0.55rem; margin-top: 1.15rem; }

.dtr-warn {
  padding: 0.75rem 0.9rem; background: #fffbeb; border: 1px solid #fde68a;
  border-radius: var(--dtr-radius-sm); font-size: 0.8125rem; color: #92400e; line-height: 1.45;
}
.dtr-err { margin-top: 0.65rem; font-size: 0.8125rem; color: #dc2626; display: none; font-weight: 600; }
.dtr-footer { text-align: center; font-size: 0.6875rem; color: var(--dtr-muted); margin-top: 1.5rem; line-height: 1.5; }

/* ── Home landing ── */
.dtr-home-prompt { margin-top: 0.25rem; }
.dtr-home-signin {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.55rem;
  margin-top: 1.35rem; padding-top: 1.15rem; border-top: 1px solid var(--dtr-border);
}
.dtr-home-signin a {
  display: flex; align-items: center; justify-content: center; min-height: var(--dtr-touch);
  color: var(--dtr-teal); font-weight: 700; font-size: 0.875rem; text-decoration: none;
  padding: 0.5rem 0.65rem; border: 1.5px solid var(--dtr-border); border-radius: var(--dtr-radius-sm);
  background: #f8fafc;
}
.dtr-home-signin a:active { background: var(--dtr-teal-soft); border-color: #99f6e4; }

/* ── Welcome ── */
.dtr-welcome {
  margin-top: 1rem; padding: 1.1rem 1rem; border-radius: var(--dtr-radius-sm);
  background: linear-gradient(145deg, #fff 0%, var(--dtr-teal-soft) 100%);
  border: 1px solid #99f6e4;
}
.dtr-welcome h2 {
  margin: 0; font-size: 1.1rem; font-weight: 700; color: var(--dtr-teal-deep);
  line-height: 1.35; letter-spacing: -0.02em;
}
.dtr-welcome > p { margin: 0.5rem 0 0; font-size: 0.9rem; color: #334155; line-height: 1.55; }
.dtr-benefits-title {
  margin: 1rem 0 0.5rem; font-size: 0.6875rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--dtr-muted);
}
.dtr-benefits { margin: 0; padding: 0; list-style: none; display: grid; gap: 0.5rem; }
.dtr-benefits li {
  display: flex; gap: 0.65rem; align-items: flex-start;
  padding: 0.7rem 0.75rem; border-radius: var(--dtr-radius-sm);
  background: rgba(255, 255, 255, 0.85); border: 1px solid #d1fae5;
  font-size: 0.8125rem; color: #334155; line-height: 1.45;
}
.dtr-benefits li::before {
  content: "✓"; flex-shrink: 0;
  width: 1.35rem; height: 1.35rem; border-radius: 999px;
  background: var(--dtr-teal); color: #fff; font-weight: 700; font-size: 0.65rem;
  display: inline-flex; align-items: center; justify-content: center; margin-top: 0.1rem;
}
.dtr-partner-line { margin: 0.85rem 0 0; font-size: 0.75rem; font-weight: 600; color: var(--dtr-muted); }

/* ── Overview timeline ── */
.dtr-timeline { margin: 0.75rem 0 0; padding: 0; list-style: none; display: grid; gap: 0.65rem; }
.dtr-timeline li {
  display: grid; grid-template-columns: 2rem 1fr; gap: 0.75rem; align-items: start;
  padding: 0.75rem 0.85rem; border-radius: var(--dtr-radius-sm);
  background: #f8fafc; border: 1px solid var(--dtr-border);
  font-size: 0.875rem; color: #334155; line-height: 1.45;
}
.dtr-timeline-num {
  width: 2rem; height: 2rem; border-radius: 999px;
  background: var(--dtr-teal); color: #fff; font-weight: 700; font-size: 0.8125rem;
  display: flex; align-items: center; justify-content: center;
}

/* ── Referral flow cards ── */
.dtr-flow-card { position: relative; }
.dtr-flow-card::before {
  content: attr(data-step);
  position: absolute; top: -0.5rem; left: 1rem;
  font-size: 0.625rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 0.2rem 0.5rem; border-radius: 999px;
  background: var(--dtr-teal); color: #fff;
}

.dtr-product {
  display: grid; grid-template-columns: 1fr auto; gap: 0.5rem; align-items: center;
  padding: 0.9rem 1rem; border: 1.5px solid var(--dtr-border); border-radius: var(--dtr-radius-sm);
  font-size: 0.875rem; cursor: pointer; margin-bottom: 0.5rem; background: #fff;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.dtr-product:active { transform: scale(0.99); }
.dtr-product:hover { border-color: #5eead4; }
.dtr-product.selected {
  border-color: var(--dtr-teal-mid); background: var(--dtr-teal-soft);
  box-shadow: 0 0 0 3px var(--dtr-teal-glow);
}
.dtr-product.unavailable { opacity: 0.45; cursor: not-allowed; pointer-events: none; }
.dtr-product-name { font-weight: 700; color: #0f172a; }
.dtr-product-meta { font-size: 0.75rem; color: var(--dtr-muted); margin-top: 0.15rem; }
.dtr-product-price { font-weight: 700; font-size: 1rem; color: var(--dtr-teal); white-space: nowrap; }

.dtr-steps { margin: 0.5rem 0 0; padding-left: 1.15rem; font-size: 0.8125rem; color: #475569; }
.dtr-steps li { margin: 0.35rem 0; }

/* ── Affiliate portal (unchanged structure) ── */
.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: 700; }
.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: 1rem 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 #f1f5f9; 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: #f8fafc; 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: #334155; }
.dtr-user-chip { font-size: 0.8125rem; color: var(--dtr-muted); text-align: right; }
.dtr-user-chip strong { color: #0f172a; }
.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; -webkit-overflow-scrolling: touch; }
.dtr-mock-banner {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.75rem;
  padding: 0.65rem 0.85rem; margin-bottom: 0.85rem; border-radius: var(--dtr-radius-sm);
  background: #fef3c7; border: 1px solid #fcd34d; font-size: 0.8125rem; 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: 0.35rem 0.6rem; border-radius: 0.4rem; border: 1px solid #fcd34d;
  background: #fff; font-size: 0.75rem; 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 #f1f5f9; }
.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: #f8fafc; border: 1px solid var(--dtr-border); border-radius: var(--dtr-radius-sm);
}

@media (min-width: 480px) {
  .dtr-benefits { grid-template-columns: 1fr 1fr; }
  .dtr-wrap { max-width: 32rem; }
}

[hidden] { display: none !important; }