.reader-mode-bar {
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.reader-mode-shell {
  width: min(calc(100% - 32px), var(--page));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 8px 0;
}

.reader-mode-copy {
  min-width: 0;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.reader-mode-copy strong {
  color: var(--fg);
}

.reader-mode-dialog {
  width: min(680px, calc(100% - 32px));
  max-height: calc(100vh - 32px);
  margin: auto;
  padding: 0;
  overflow: auto;
  border: 1px solid var(--fg);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  box-shadow: 8px 8px 0 var(--fg);
}

.reader-mode-dialog::backdrop {
  background: var(--fg);
  opacity: .78;
}

.mode-dialog-inner {
  padding: 40px;
}

.mode-eyebrow,
.beginner-eyebrow,
.service-eyebrow {
  display: inline-block;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.mode-dialog-inner h2 {
  max-width: 12ch;
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -.025em;
}

.mode-intro {
  margin: 20px 0 0;
  font-size: 17px;
}

.mode-actions {
  display: grid;
  gap: 12px;
  margin-top: 32px;
}

.mode-choice {
  width: 100%;
  min-height: 64px;
  padding: 16px 18px;
  border: 1px solid var(--fg);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--fg);
  text-align: left;
  font-weight: 700;
  letter-spacing: .02em;
  cursor: pointer;
  transition: transform .14s ease, background .14s ease, color .14s ease;
}

.mode-choice:first-child {
  background: var(--accent);
  color: var(--fg);
}

.mode-choice:hover {
  background: var(--fg);
  color: var(--bg);
  transform: translateY(-2px);
}

.mode-choice:active {
  transform: translateY(0);
}

.mode-footnote {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.beginner-rundown {
  display: none;
  margin: 32px 0 40px;
  padding: 32px;
  border: 1px solid var(--fg);
  border-radius: var(--radius);
  background: var(--bg);
  box-shadow: 6px 6px 0 var(--fg);
}

body[data-reader-mode="beginner"] .beginner-rundown {
  display: block;
}

.beginner-eyebrow {
  margin-bottom: 12px;
  padding: 6px 8px;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--fg);
}

.beginner-rundown h3 {
  max-width: 28ch;
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  line-height: 1.08;
  letter-spacing: -.015em;
}

.beginner-summary {
  max-width: 64ch;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 16px !important;
}

.beginner-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.beginner-item {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.beginner-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--fg);
  font-size: 11px;
  line-height: 1.4;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.beginner-item p {
  margin: 0;
  color: var(--fg);
  font-size: 15px !important;
  line-height: 1.55;
}

.beginner-term,
.beginner-next {
  margin: 20px 0 0;
  font-size: 14px !important;
  line-height: 1.5;
}

.beginner-term {
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--fg);
}

.beginner-term strong {
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.beginner-next {
  color: var(--muted);
}

.technical-toggle {
  display: none;
  margin: 0 0 24px;
}

.technical-source-group {
  display: contents;
}

body[data-reader-mode="beginner"] .technical-toggle {
  display: inline-flex;
}

body[data-reader-mode="beginner"] .technical-source-group:not(.is-open) {
  display: none;
}

.technical-source-group > p {
  font-size: 17px;
}

.technical-source-group > p:first-of-type {
  margin-top: 24px;
}

.service-cta {
  margin-top: 40px;
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  border: 1px solid var(--fg);
  border-radius: var(--radius);
  background: var(--bg);
}

.service-cta h3 {
  max-width: 30ch;
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  line-height: 1.12;
}

.service-cta p {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px !important;
}

.service-eyebrow {
  margin-bottom: 8px;
}

.service-button {
  min-width: 210px;
  background: var(--fg);
  color: var(--bg);
}

.service-button:hover {
  background: var(--bg);
  color: var(--fg);
}

@media (max-width: 700px) {
  .reader-mode-shell {
    width: min(calc(100% - 24px), var(--page));
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 12px 0;
  }

  .mode-dialog-inner {
    padding: 24px;
  }

  .beginner-rundown {
    padding: 24px;
    box-shadow: 4px 4px 0 var(--fg);
  }

  .beginner-grid,
  .service-cta {
    grid-template-columns: 1fr;
  }

  .service-button {
    width: 100%;
    min-width: 0;
  }

  .technical-toggle {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mode-choice {
    transition-duration: .01ms;
  }
}