:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --subtle: #f8fafd;
  --ink: #202124;
  --muted: #5f6368;
  --line: #dadce0;
  --line-soft: #edf0f3;
  --blue: #1a73e8;
  --blue-hover: #185abc;
  --green: #188038;
  --green-bg: #e6f4ea;
  --yellow-bg: #fef7e0;
  --yellow-line: #feefc3;
  --red: #b3261e;
  --red-bg: #fce8e6;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(60, 64, 67, 0.16), 0 1px 3px rgba(60, 64, 67, 0.08);
  font-family: Inter, Roboto, "Google Sans", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--ink);
  margin: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button,
input,
textarea {
  font: inherit;
}

.site-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  gap: 24px;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 32px;
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

.brand,
.nav,
.header-actions,
.site-footer {
  align-items: center;
  display: flex;
}

.brand {
  color: var(--ink);
  font-size: 1rem;
  font-weight: 600;
  gap: 10px;
}

.brand-logo {
  background: #05080f;
  border-radius: 999px;
  display: block;
  height: 40px;
  object-fit: contain;
  padding: 8px 18px;
  width: 156px;
}

.brand-mark {
  align-items: center;
  background: var(--blue);
  border-radius: 50%;
  color: #ffffff;
  display: inline-flex;
  font-size: 0.74rem;
  font-weight: 700;
  height: 32px;
  justify-content: center;
  letter-spacing: 0;
  width: 32px;
}

.nav {
  color: var(--muted);
  font-size: 0.9rem;
  gap: 6px;
}

.nav a,
.account-popover a,
.account-popover button {
  border-radius: 999px;
}

.nav a {
  min-height: 36px;
  padding: 8px 12px;
}

.nav a:hover {
  background: var(--subtle);
  color: var(--ink);
}

.header-actions {
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
  margin-left: auto;
  min-width: 0;
}

.account-menu {
  position: relative;
}

.account-menu summary {
  list-style: none;
}

.account-menu summary::-webkit-details-marker {
  display: none;
}

.account-trigger {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex;
  height: 40px;
  justify-content: center;
  padding: 4px;
  width: 40px;
}

.account-trigger:hover,
.account-menu[open] .account-trigger {
  background: var(--subtle);
}

.account-avatar {
  align-items: center;
  background: #1f1f1f;
  border-radius: 50%;
  color: #ffffff;
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 0.72rem;
  font-weight: 700;
  height: 32px;
  justify-content: center;
  letter-spacing: 0;
  width: 32px;
}

.account-avatar.large {
  font-size: 1rem;
  height: 48px;
  width: 48px;
}

.account-popover {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(60, 64, 67, 0.18);
  display: grid;
  gap: 4px;
  min-width: 280px;
  padding: 8px;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 30;
}

.account-person {
  align-items: center;
  border-bottom: 1px solid var(--line-soft);
  display: grid;
  gap: 2px 12px;
  grid-template-columns: auto minmax(0, 1fr);
  margin-bottom: 4px;
  padding: 10px 10px 14px;
}

.account-person .account-avatar {
  grid-row: span 2;
}

.account-person-name {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-person-email {
  color: var(--muted);
  font-size: 0.82rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.account-popover a,
.account-popover button {
  align-items: center;
  background: transparent;
  border: 0;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  font: inherit;
  font-size: 0.94rem;
  min-height: 40px;
  padding: 0 12px;
  text-align: left;
  width: 100%;
}

.account-popover a:hover,
.account-popover button:hover {
  background: var(--subtle);
}

.account-logout {
  margin: 0;
}

.hero {
  align-items: center;
  display: grid;
  gap: clamp(32px, 7vw, 96px);
  grid-template-columns: minmax(0, 1fr) minmax(320px, 480px);
  min-height: calc(100svh - 64px);
  padding: clamp(56px, 9vw, 112px) 32px clamp(48px, 7vw, 84px);
}

.hero-copy,
.intro-section,
.people-section,
.contact-section,
.app-narrow,
.app-wide {
  margin-inline: auto;
  width: 100%;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 14px;
  text-transform: none;
}

h1,
h2,
h3,
p,
figure {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.02;
  margin-bottom: 24px;
  max-width: 900px;
}

h2 {
  font-size: clamp(1.9rem, 3.2vw, 3.2rem);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.08;
  margin-bottom: 16px;
}

h3 {
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 8px;
}

.hero-text,
.intro-section p,
.principles p,
.person-card p,
.contact-section p,
.portal-header p,
.portal-card p,
.request-row p,
.admin-table p,
.section-note,
.muted-note {
  color: var(--muted);
  line-height: 1.6;
}

.hero-text {
  font-size: clamp(1.08rem, 1.55vw, 1.28rem);
  margin-bottom: 28px;
  max-width: 650px;
}

.button {
  align-items: center;
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 999px;
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  font-weight: 600;
  justify-content: center;
  min-height: 42px;
  padding: 0 20px;
}

.button:hover {
  background: var(--blue-hover);
  border-color: var(--blue-hover);
}

.small-button {
  min-height: 34px;
  padding: 8px 12px;
}

.button.secondary,
.button.ghost,
.button.light.ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--blue);
}

.button.secondary:hover,
.button.ghost:hover,
.button.light.ghost:hover {
  background: #f1f6fe;
  border-color: #d2e3fc;
  color: var(--blue-hover);
}

.button.light {
  background: var(--blue);
  border-color: var(--blue);
  color: #ffffff;
}

.hero-actions,
.form-actions,
.request-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-actions.centered {
  justify-content: center;
}

.home-summary {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 0;
  overflow: hidden;
}

.home-summary article {
  align-items: start;
  display: grid;
  gap: 14px;
  grid-template-columns: 32px minmax(0, 1fr);
  padding: 22px;
}

.home-summary article + article {
  border-top: 1px solid var(--line-soft);
}

.home-summary span,
.principles span,
.tag,
.request-status {
  align-items: center;
  background: #e8f0fe;
  border-radius: 999px;
  color: var(--blue);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 700;
  justify-content: center;
}

.home-summary span {
  height: 28px;
  width: 28px;
}

.home-summary h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.home-summary p {
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: 0;
}

.intro-section,
.people-section,
.contact-section {
  max-width: 1180px;
  padding: clamp(56px, 8vw, 96px) 32px;
}

.intro-section {
  align-items: start;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
}

.intro-section p {
  font-size: 1.08rem;
  max-width: 760px;
}

.principles {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-inline: auto;
  max-width: 1180px;
  padding: 0 32px clamp(56px, 8vw, 96px);
}

.principles article,
.person-card,
.portal-card,
.request-row,
.team-chip,
.assignment-row,
.auth-card,
.notice,
.admin-table,
.simulator {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: none;
}

.principles article {
  min-height: 190px;
  padding: 24px;
}

.principles span {
  height: 32px;
  margin-bottom: 28px;
  width: 40px;
}

.section-heading {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(180px, 0.32fr) minmax(0, 1fr);
  margin-bottom: 28px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.people-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.person-card {
  align-items: start;
  display: grid;
  gap: 22px;
  grid-template-columns: 96px minmax(0, 1fr);
  min-height: 260px;
  padding: 24px;
}

.person-photo {
  aspect-ratio: 1;
  border-radius: 50%;
  filter: saturate(0.9) contrast(1.02);
  object-fit: cover;
  width: 96px;
}

.person-role {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}

.profile-link,
.small-link {
  color: var(--blue);
  display: inline-flex;
  font-weight: 600;
  text-decoration: none;
}

.profile-link:hover,
.small-link:hover {
  text-decoration: underline;
}

.contact-section {
  align-items: center;
  border-top: 1px solid var(--line-soft);
  display: flex;
  gap: 24px;
  justify-content: space-between;
}

.contact-section p {
  margin-bottom: 0;
  max-width: 620px;
}

.site-footer {
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.9rem;
  gap: 16px;
  justify-content: space-between;
  padding: 24px 32px;
}

.site-footer span:first-child {
  color: var(--ink);
  font-weight: 600;
}

.app-shell {
  min-height: calc(100svh - 64px);
  padding: clamp(40px, 6vw, 72px) 32px;
}

.app-narrow {
  max-width: 680px;
}

.app-wide {
  max-width: 1120px;
}

.auth-card {
  padding: clamp(24px, 4vw, 34px);
}

.form-grid {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label {
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 600;
}

.field input,
.field select,
.field textarea,
.team-create-form input {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  min-height: 44px;
  padding: 10px 12px;
  width: 100%;
}

.field textarea {
  min-height: 120px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.team-create-form input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.16);
  outline: none;
}

.form-actions {
  margin-top: 4px;
}

.notice {
  margin-bottom: 18px;
  padding: 14px 16px;
}

.notice.success {
  background: #e6f4ea;
  border-color: #ceead6;
  color: #137333;
}

.notice.warning {
  background: var(--yellow-bg);
  border-color: var(--yellow-line);
}

.notice.error {
  background: var(--red-bg);
  border-color: #fad2cf;
  color: var(--red);
}

.portal-header {
  align-items: end;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin-bottom: 26px;
}

.portal-app {
  max-width: 1480px;
}

.portal-header h1,
.account-heading h1 {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
}

.portal-header p {
  margin-bottom: 0;
  max-width: 680px;
}

[hidden] {
  display: none !important;
}

.portal-stepper .portal-menu-toggle {
  display: none;
}

.portal-workspace {
  align-items: start;
  display: grid;
  gap: 28px;
  grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
}

.portal-sidebar {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-height: calc(100svh - 108px);
  overflow: auto;
  padding: 14px;
  position: sticky;
  top: 88px;
}

.portal-sidebar-brand {
  align-items: center;
  border-bottom: 1px solid var(--line-soft);
  display: grid;
  gap: 12px;
  grid-template-columns: 128px minmax(0, 1fr);
  margin-bottom: 16px;
  padding: 4px 4px 16px;
}

.portal-sidebar-brand span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.portal-sidebar-brand span {
  color: var(--muted);
  font-size: 0.86rem;
  margin-top: 2px;
}

.portal-sidebar-logo {
  background: #05080f;
  border-radius: var(--radius);
  display: block;
  height: 40px;
  object-fit: contain;
  padding: 7px 10px;
  width: 128px;
}

.portal-sidebar-title {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  margin: 4px 8px 10px;
}

.portal-menu-group {
  border-top: 1px solid var(--line-soft);
  padding: 6px 0;
}

.portal-lesson-group {
  min-width: 0;
  border-top: 1px solid var(--line-soft);
  padding-top: 6px;
  margin-top: 6px;
}

.portal-lesson-group > summary {
  font-size: 0.875rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.portal-child-label {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  margin: 16px 10px 5px;
}

.portal-menu-links .portal-child-link {
  display: block;
  font-size: 0.85rem;
  line-height: 1.45;
  padding: 9px 12px;
  overflow-wrap: anywhere;
}
.portal-child-link small { display: block; font-size: 11px; color: var(--muted); margin-bottom: 3px; }
.portal-child-link.is-complete small { color: var(--green); }
.portal-lesson-number { flex: 0 0 auto; color: var(--muted); font-size: 12px; }
.portal-lesson-group > summary strong { font-size: 14px; line-height: 1.45; min-width: 0; }

.portal-search-status {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 12px;
}
.portal-search-results { display: grid; max-height: 280px; overflow: auto; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.portal-search-results a { padding: 10px 12px; color: var(--blue); font-size: 14px; border-radius: 6px; overflow-wrap: anywhere; }
.portal-search-results a:hover { background: var(--subtle); }

.portal-sidebar [hidden] {
  display: none !important;
}

.portal-menu-group:first-of-type {
  border-top: 0;
}

.portal-menu-group > summary,
.portal-lesson-group > summary {
  align-items: center;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  font-weight: 600;
  justify-content: space-between;
  list-style: none;
  min-height: 38px;
  padding: 0 8px;
  gap: 8px;
}

.portal-menu-group > summary::-webkit-details-marker,
.portal-lesson-group > summary::-webkit-details-marker {
  display: none;
}

.portal-menu-group > summary::before,
.portal-lesson-group > summary::before {
  color: var(--muted);
  content: ">";
  margin-right: 8px;
  transform: rotate(0deg);
  flex: 0 0 auto;
}

.portal-menu-group[open] > summary::before,
.portal-lesson-group[open] > summary::before {
  transform: rotate(90deg);
}

.portal-menu-group > summary:hover,
.portal-lesson-group > summary:hover {
  background: var(--subtle);
}

.portal-menu-count {
  align-items: center;
  background: #e8f0fe;
  border-radius: 999px;
  color: var(--blue);
  display: inline-flex;
  font-size: 0.72rem;
  height: 22px;
  justify-content: center;
  min-width: 22px;
  padding: 0 7px;
}

.course-progress {
  background: var(--subtle);
  border-radius: var(--radius);
  margin: 18px 0 4px;
  max-width: 560px;
  padding: 14px;
}

.course-progress.compact {
  background: transparent;
  margin: 0;
  padding: 4px 8px 8px 34px;
}

.course-progress-label {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 0.8rem;
  justify-content: space-between;
  margin-bottom: 8px;
}

.course-progress-label strong {
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 600;
}

.course-progress-track {
  background: var(--line-soft);
  border-radius: 999px;
  height: 6px;
  overflow: hidden;
}

.course-progress-track span {
  background: var(--green);
  display: block;
  height: 100%;
  transition: width 180ms ease;
}

.portal-menu-links {
  display: grid;
  gap: 4px;
  padding: 8px 0 4px;
}

.portal-menu-links.nested {
  padding-left: 0;
}

.portal-menu-links a {
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
  padding: 9px 10px;
}

.portal-menu-links a:hover {
  background: var(--subtle);
  color: var(--blue);
}

.portal-menu-links a[aria-current="page"],
.portal-list-card[aria-current="page"] {
  background: #e8f0fe;
  color: var(--blue);
  font-weight: 600;
}

.portal-lesson-link {
  display: block;
  min-height: 40px;
}

.portal-lesson-index {
  align-items: center;
  background: var(--subtle);
  border-radius: 999px;
  color: var(--muted);
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 700;
  height: 24px;
  justify-content: center;
  margin-top: 1px;
  padding: 0;
  width: 24px;
}

.portal-lesson-label {
  display: grid;
  gap: 3px;
  min-width: 0;
  padding: 0;
}

.portal-lesson-label strong {
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.portal-lesson-label small {
  color: var(--muted);
  font-size: 0.78rem;
}

.portal-lesson-link[aria-current="page"] .portal-lesson-index {
  background: var(--blue);
  color: #ffffff;
}

.portal-lesson-link[aria-current="page"] .portal-lesson-label strong {
  color: var(--blue);
}

.portal-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  min-width: 0;
  scroll-margin-top: 88px;
}

.portal-toolbar {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(260px, 560px) auto;
  justify-content: space-between;
  padding: 14px;
  position: sticky;
  top: 80px;
  z-index: 3;
}

.portal-breadcrumbs { display: flex; flex-wrap: wrap; gap: 6px 10px; font-size: 12px; color: var(--muted); line-height: 1.5; }
.portal-breadcrumbs > * { min-width: 0; overflow-wrap: anywhere; }
.portal-crumb { display: inline-flex; align-items: center; max-width: 100%; gap: 10px; }
.portal-crumb > span { color: var(--muted); }
.portal-breadcrumbs a { color: var(--blue); }
.portal-breadcrumbs:empty { display: none; }
.portal-page-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; border-top: 1px solid var(--line); padding: 18px 0; }
.portal-page-nav a { display: flex; align-items: center; gap: 10px; padding: 10px; border-radius: 6px; min-width: 0; color: var(--ink); }
.portal-page-nav a:hover { background: var(--subtle); }
.portal-page-nav a[aria-disabled="true"] { visibility: hidden; }
.portal-page-nav a:last-child { justify-content: flex-end; text-align: right; }
.portal-page-nav a > span { min-width: 0; overflow-wrap: anywhere; }
.portal-page-nav svg { width: 20px; height: 20px; flex: 0 0 20px; }
.portal-page-nav small { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.portal-page-nav strong { display: block; font-size: 14px; line-height: 1.4; font-weight: 600; }
.portal-sidebar a:focus-visible, .portal-sidebar summary:focus-visible, .portal-page-nav a:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }

.portal-search {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  min-height: 44px;
  overflow: hidden;
}

.portal-search:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.16);
}

.portal-search span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  padding-left: 14px;
}

.portal-search input {
  border: 0;
  color: var(--ink);
  min-height: 42px;
  outline: 0;
  padding: 0 14px 0 10px;
  width: 100%;
}

.portal-stepper {
  align-items: center;
  display: inline-flex;
  gap: 8px;
  justify-content: flex-end;
}

.portal-stepper span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
  min-width: 60px;
  text-align: center;
}

.icon-button {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  font-size: 0.88rem;
  font-weight: 600;
  justify-content: center;
  min-height: 38px;
  padding: 0 12px;
}

.icon-button:hover:not(:disabled) {
  background: var(--subtle);
  border-color: var(--line-soft);
}

.icon-button:disabled {
  color: var(--muted);
  cursor: default;
  opacity: 0.5;
}

.portal-content-section {
  scroll-margin-top: 92px;
}

.portal-section-heading {
  margin-bottom: 14px;
}

.portal-section-heading h2 {
  font-size: clamp(1.45rem, 2.2vw, 2.2rem);
  margin-bottom: 8px;
}

.portal-section-heading p:last-child {
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 0;
  max-width: 720px;
}

.portal-course {
  display: grid;
  gap: 18px;
}

.portal-panel {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  min-height: min(720px, calc(100svh - 170px));
  padding: clamp(22px, 3vw, 34px);
  scroll-margin-top: 92px;
}

.portal-panel[hidden] {
  display: none;
}

.portal-panel-heading h2 {
  font-size: 1.75rem;
  margin-bottom: 8px;
}

.portal-panel-heading,
.simulation-framework,
.simulation-room,
.simulation-offer,
.simulation-offer label {
  min-width: 0;
  overflow-wrap: anywhere;
}

.portal-panel-heading > p {
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 0;
  max-width: 760px;
}

.portal-lesson-columns {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.portal-lesson-columns h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin: 0 0 10px;
}

.portal-panel-section h3 {
  font-size: 1rem;
  margin-bottom: 12px;
}

.portal-list {
  display: grid;
  gap: 10px;
}

.portal-list.compact {
  align-content: start;
}

.portal-list-card {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  gap: 5px;
  padding: 15px;
}

.portal-list-card:hover {
  background: var(--subtle);
  border-color: var(--line);
}

.portal-list-card.is-complete {
  border-left: 3px solid var(--green);
}

.portal-list-card span {
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 700;
}

.portal-list-card strong {
  font-size: 0.98rem;
  font-weight: 600;
}

.portal-list-card small {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

/* Learners use the same focused hierarchy as the author workspace. */
.learner-catalog .portal-header { margin-bottom: 24px; }
.learner-catalog .portal-header h1 { font-size: 28px; margin: 0; }
.learner-catalog .portal-workspace { grid-template-columns: minmax(0, 1fr); max-width: 1100px; margin-inline: auto; }
.learner-catalog .portal-toolbar { border: 0; border-bottom: 1px solid var(--line-soft); border-radius: 0; box-shadow: none; padding: 12px 0; }
.learner-catalog .portal-breadcrumbs { font-size: 14px; padding: 4px 0; }
.learner-catalog .portal-breadcrumbs a { padding: 6px 0; }
.learner-catalog .portal-panel { border: 0; border-radius: 0; box-shadow: none; min-height: 0; padding: 8px 0 24px; gap: 24px; }
.portal-branch-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.portal-branch-heading h2 { flex: 1 1 260px; font-size: 26px; line-height: 1.3; margin: 0; overflow-wrap: anywhere; }
.portal-resume { max-width: 360px; overflow-wrap: anywhere; }
.learner-catalog .portal-list { gap: 0; border-top: 1px solid var(--line-soft); }
.learner-catalog .portal-list-card { grid-template-columns: 20px 76px minmax(0, 1fr) auto; gap: 14px; align-items: center; border: 0; border-bottom: 1px solid var(--line-soft); border-radius: 0; padding: 18px 12px; min-height: 64px; }
.learner-catalog .portal-list-card > svg { color: var(--muted); }
.learner-catalog .portal-list-card > strong { min-width: 0; overflow-wrap: anywhere; }
.learner-catalog .portal-list-card .portal-completion { color: var(--muted); font-size: 12px; white-space: nowrap; }
.learner-catalog .portal-list-card.is-complete .portal-completion { color: var(--green); }
.learner-catalog .portal-list-card .portal-row-progress { display: grid; gap: 6px; width: 132px; color: var(--muted); }
.portal-row-progress-label { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.portal-row-progress-label > span, .portal-row-progress-label > strong { color: var(--muted); font-size: 12px; font-weight: 500; }
.portal-row-progress-track { display: block; height: 5px; overflow: hidden; border-radius: 3px; background: #e8edf2; }
.portal-row-progress-track > span { display: block; height: 100%; background: var(--blue); }
.is-complete .portal-row-progress-track > span { background: var(--green); }
.learner-catalog .portal-branch .course-progress { max-width: 320px; margin-top: 20px; }
.learner-catalog [data-portal-overview] { line-height: 1.6; min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 640px) {
  .portal-branch-heading h2 { font-size: 22px; }
  .learner-catalog .portal-list-card { grid-template-columns: 18px minmax(0, 1fr) auto; gap: 10px; padding: 16px 4px; }
  .learner-catalog .portal-list-card > span:not(.portal-row-progress) { display: none; }
  .learner-catalog .portal-list-card .portal-row-progress { width: 92px; }
  .learner-catalog .portal-toolbar { gap: 8px; }
}

.progress-control {
  align-items: center;
  border-top: 1px solid var(--line-soft);
  display: flex;
  gap: 12px;
  margin-top: 24px;
  padding-top: 18px;
}

.progress-toggle {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--blue);
  cursor: pointer;
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  min-height: 40px;
  padding: 0 14px;
}

.progress-toggle:hover:not(:disabled) {
  background: #e8f0fe;
}

.progress-toggle.is-complete {
  background: #e6f4ea;
  border-color: #b7dfc2;
  color: #137333;
}

.progress-toggle:disabled {
  cursor: wait;
  opacity: 0.65;
}

.progress-message {
  color: var(--muted);
  font-size: 0.82rem;
  min-height: 1.2em;
}

.simulator-card > .progress-control {
  margin: 0;
  padding: 18px 24px;
}

.simulator-card {
  overflow: hidden;
  padding: 0;
}

.simulator-card .simulator {
  border: 0;
  margin: 0;
}

.portal-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.portal-card {
  min-height: 220px;
  padding: 22px;
}

.portal-body {
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
}

.portal-body p {
  color: var(--muted);
  line-height: 1.55;
  margin: 0;
}

.simulation-framework {
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 20px;
  margin-top: 10px;
  padding-top: 20px;
}

.simulation-header,
.simulation-room-bar,
.simulation-actions {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.simulation-header h3 {
  font-size: 1.25rem;
  margin: 4px 0 0;
}

.simulation-kicker {
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
}

.simulation-state {
  background: #e8f0fe;
  border-radius: 999px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 6px 10px;
}

.simulation-state.is-complete {
  background: var(--green-bg);
  color: var(--green);
}

.simulation-lobby {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.simulation-lobby > div,
.simulation-join {
  display: grid;
  gap: 10px;
}

.simulation-lobby > div:first-child {
  border-right: 1px solid var(--line-soft);
  padding-right: 24px;
}

.simulation-lobby p,
.simulation-brief p,
.simulation-message,
.simulation-outcome p {
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
}

.simulation-lobby .button {
  justify-self: start;
}

.simulation-join label,
.simulation-offer label {
  color: var(--ink);
  display: grid;
  font-size: 0.84rem;
  font-weight: 600;
  gap: 7px;
}

.simulation-join > div {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr) auto;
}

.simulation-join input,
.simulation-offer input,
.simulation-offer textarea {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  min-height: 42px;
  padding: 9px 11px;
  width: 100%;
  min-width: 0;
}

.simulation-join input:focus,
.simulation-offer input:focus,
.simulation-offer textarea:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.16);
  outline: 0;
}

.simulation-room {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.simulation-room[hidden] {
  display: none;
}

.simulation-room-bar {
  background: var(--subtle);
  border-radius: var(--radius);
  justify-content: flex-start;
  padding: 12px 14px;
}

.simulation-room-bar > div {
  border-right: 1px solid var(--line);
  display: grid;
  gap: 2px;
  min-width: 110px;
  padding-right: 16px;
}

.simulation-room-bar > div:last-child {
  border-right: 0;
}

.simulation-room-bar span {
  color: var(--muted);
  font-size: 0.72rem;
}

.simulation-room-bar strong {
  font-size: 0.9rem;
}

.simulation-brief {
  display: grid;
  gap: 7px;
}

.simulation-agent-list {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.simulation-agent-list > div {
  align-items: center;
  display: grid;
  gap: 9px;
  grid-template-columns: 34px minmax(0, 1fr);
}

.simulation-agent-list > div > span {
  align-items: center;
  background: #e8f0fe;
  border-radius: 50%;
  color: var(--blue);
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 700;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.simulation-agent-list > div > div {
  display: grid;
  gap: 2px;
}

.simulation-agent-list strong {
  font-size: 0.86rem;
}

.simulation-agent-list small {
  color: var(--muted);
  font-size: 0.75rem;
}

.simulation-timeline {
  border-bottom: 1px solid var(--line-soft);
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 0;
  max-height: 390px;
  overflow: auto;
  padding: 5px 0;
}

.simulation-event {
  border-left: 3px solid var(--line);
  display: grid;
  gap: 4px;
  margin: 7px 0;
  padding: 5px 12px;
}

.simulation-event.agent {
  border-left-color: var(--blue);
}

.simulation-event.user {
  border-left-color: var(--green);
}

.simulation-event > span,
.simulation-event > small {
  color: var(--muted);
  font-size: 0.76rem;
}

.simulation-event p {
  line-height: 1.5;
  margin: 0;
}

.simulation-offer {
  display: grid;
  gap: 14px;
}

.simulation-offer-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.simulation-offer textarea {
  min-height: 84px;
  resize: vertical;
}

.simulation-actions {
  justify-content: flex-start;
}

.text-button {
  background: transparent;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 600;
  min-height: 40px;
  padding: 0 8px;
}

.danger-text {
  color: var(--red);
}

.simulation-outcome {
  background: var(--green-bg);
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
  display: grid;
  gap: 6px;
  padding: 16px;
}

.simulation-outcome[hidden] {
  display: none;
}

.simulation-outcome .button {
  justify-self: start;
  margin-top: 6px;
}

.simulation-message {
  min-height: 1.4em;
}

.portal-embed-frame,
.portal-video-frame {
  background: #ffffff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.portal-embed-frame iframe,
.portal-video-frame iframe,
.portal-video-frame video {
  border: 0;
  display: block;
  width: 100%;
}

.portal-embed-frame iframe {
  height: min(76svh, 820px);
}

.portal-video-frame {
  aspect-ratio: 16 / 9;
}

.portal-video-frame iframe,
.portal-video-frame video {
  height: 100%;
}

.portal-material-image {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 0;
  overflow: hidden;
}

.portal-material-image img {
  background: var(--subtle);
  display: block;
  max-height: 620px;
  object-fit: contain;
  width: 100%;
}

.portal-material-image figcaption {
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.86rem;
  padding: 10px 14px;
}

.material-download-card {
  align-items: start;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  gap: 5px;
  padding: 15px;
}

.material-download-card:hover {
  background: var(--subtle);
  border-color: var(--line);
}

.material-download-card span {
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 700;
}

.material-download-card strong {
  color: var(--ink);
}

.material-download-card small {
  color: var(--muted);
}

.portal-media-placeholder {
  background: var(--subtle);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 8px;
  padding: 18px;
}

.portal-media-placeholder span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.portal-media-placeholder strong {
  color: var(--ink);
  font-size: 1.05rem;
}

.portal-media-placeholder p {
  color: var(--muted);
}

.tag,
.request-status {
  font-size: 0.72rem;
  margin-bottom: 16px;
  padding: 6px 10px;
  text-transform: none;
}

.simulator {
  background: var(--subtle);
  margin-top: 20px;
  padding: 22px;
}

.simulator-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 0.38fr);
}

.range-field {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.range-field label {
  font-weight: 600;
}

.range-field input {
  accent-color: var(--blue);
}

.score-box {
  align-content: center;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  min-height: 176px;
  padding: 24px;
  text-align: center;
}

.score-value {
  color: var(--blue);
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 600;
  line-height: 1;
}

.score-label {
  color: var(--muted);
  font-weight: 600;
  margin-top: 10px;
}

.request-list,
.assignment-list {
  display: grid;
  gap: 12px;
}

.admin-section {
  border-top: 1px solid var(--line-soft);
  margin-top: 32px;
  padding-top: 28px;
}

.admin-console { padding-top: 28px; }
.admin-console .portal-header { align-items: center; margin-bottom: 20px; }
.admin-console .portal-header h1 { font-size: 24px; margin: 0; }

.admin-nav {
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  gap: 6px;
  margin: -4px 0 24px;
  overflow-x: auto;
  padding-bottom: 8px;
}

.admin-nav a {
  align-items: center;
  border-radius: var(--radius);
  color: var(--muted);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: 0.9rem;
  font-weight: 600;
  gap: 8px;
  min-height: 40px;
  padding: 0 12px;
}

.admin-nav a:hover {
  background: var(--subtle);
  color: var(--ink);
}

.admin-nav a[aria-current="page"] {
  background: #e8f0fe;
  color: var(--blue);
}

.admin-nav small {
  align-items: center;
  background: rgba(95, 99, 104, 0.1);
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.72rem;
  height: 22px;
  justify-content: center;
  min-width: 22px;
  padding: 0 6px;
}

.admin-view > .admin-section:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.admin-section h2 {
  font-size: clamp(1.55rem, 2.4vw, 2.4rem);
}

.section-heading.compact {
  align-items: end;
  grid-template-columns: minmax(220px, 0.56fr) minmax(280px, 1fr);
  margin-bottom: 18px;
}

.sim-catalog-heading {
  align-items: center;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  margin-bottom: 24px;
}

.sim-catalog-heading h2 {
  font-size: 24px;
  margin: 0;
}

.sim-catalog-actions,
.sim-row-actions {
  align-items: center;
  display: flex;
  gap: 20px;
  font-size: 14px;
}

.sim-catalog-actions .button {
  border-radius: 6px;
  font-size: 14px;
  min-height: 38px;
  padding: 8px 14px;
}

.sim-catalog-list,
.sim-history-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sim-catalog-list { border-top: 1px solid var(--line-soft); }

.sim-catalog-entry {
  align-items: start;
  border-bottom: 1px solid var(--line-soft);
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) 160px;
}

.sim-catalog-detail { min-width: 0; }

.sim-catalog-detail > summary,
.sim-history > summary {
  align-items: center;
  cursor: pointer;
  display: flex;
  gap: 12px;
  list-style: none;
  padding: 20px 0;
}

.sim-catalog summary::-webkit-details-marker { display: none; }
.sim-catalog summary > svg { color: var(--muted); flex: 0 0 18px; height: 18px; }
.sim-catalog details[open] > summary > svg { transform: rotate(90deg); }
.sim-catalog summary:hover .sim-catalog-title strong { color: var(--blue); }
.sim-catalog summary:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.sim-catalog-title { flex: 1; min-width: 0; }
.sim-catalog-title strong { display: block; font-size: 15px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.sim-catalog-title small { color: var(--muted); display: block; font-size: 13px; margin-top: 4px; }
.sim-catalog .content-status { flex: 0 0 auto; font-size: 11px; font-weight: 500; }
.sim-row-actions { justify-content: flex-end; min-height: 88px; }
.sim-row-actions a { padding: 8px 0; }
.sim-catalog-info { color: var(--muted); max-width: 800px; padding: 0 0 24px 30px; }
.sim-catalog-info p { font-size: 14px; line-height: 1.6; margin: 0 0 16px; }
.sim-catalog-info dl { display: grid; font-size: 13px; gap: 8px 20px; grid-template-columns: 110px minmax(0, 1fr); margin: 0; }
.sim-catalog-info dd { color: var(--ink); margin: 0; overflow-wrap: anywhere; }
.sim-catalog-info code { font-size: 12px; }
.sim-history { margin-top: 28px; }
.sim-history > summary { color: var(--muted); font-size: 14px; padding: 12px 0; }
.sim-history > summary small { font-size: 12px; }
.sim-history-list { border-top: 1px solid var(--line-soft); margin-top: 12px; }
.sim-history-list > li { align-items: start; border-bottom: 1px solid var(--line-soft); display: flex; gap: 24px; justify-content: space-between; padding: 18px 0; }
.sim-history-list strong { display: block; font-size: 14px; font-weight: 500; overflow-wrap: anywhere; }
.sim-history-list small,.sim-history-list time { color: var(--muted); display: block; font-size: 12px; margin-top: 5px; }
.sim-history-meta { flex: 0 0 auto; text-align: right; }
.sim-catalog-empty { color: var(--muted); font-size: 14px; padding: 24px 0; }

@media (max-width: 640px) {
  .sim-catalog-heading { align-items: start; flex-direction: column; gap: 16px; }
  .sim-catalog-heading h2 { font-size: 22px; }
  .sim-catalog-actions { flex-wrap: wrap; gap: 16px; }
  .sim-catalog-entry { gap: 0; grid-template-columns: minmax(0, 1fr); }
  .sim-catalog-detail > summary { gap: 8px; padding: 18px 0 10px; }
  .sim-catalog-title strong { font-size: 14px; }
  .sim-row-actions { justify-content: flex-start; min-height: 42px; padding: 0 0 10px 26px; }
  .sim-catalog-info { padding-left: 26px; }
  .sim-catalog-info dl { gap: 6px; grid-template-columns: minmax(0, 1fr); }
  .sim-catalog-info dd { margin-bottom: 8px; }
  .sim-history-list > li { flex-direction: column; gap: 8px; }
  .sim-history-meta { align-items: center; display: flex; flex-wrap: wrap; gap: 12px; text-align: left; }
  .sim-history-list time { margin: 0; }
}

.team-create-form {
  align-items: end;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr) auto;
}

.team-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.team-chip {
  display: grid;
  gap: 4px;
  min-width: min(260px, 100%);
  padding: 14px 16px;
}

.team-chip span {
  color: var(--muted);
  font-size: 0.9rem;
}

.material-upload-form {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 18px;
}

.content-builder {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compact-editor {
  display: grid;
  gap: 14px;
  margin: 0;
}

.compact-editor h3 {
  font-size: 1.05rem;
  margin: 0;
}

.compact-editor textarea {
  min-height: 88px;
}

.material-upload-form .material-instructions,
.material-upload-form .material-teams,
.material-upload-form .form-actions {
  grid-column: 1 / -1;
}

.material-upload-form small {
  color: var(--muted);
  font-size: 0.82rem;
}

.material-publish {
  justify-self: start;
}

.materials-table td:first-child {
  display: grid;
  gap: 4px;
}

.materials-table td:first-child span {
  color: var(--muted);
  font-size: 0.86rem;
}

.content-editor-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

/* The author workspace displays one level of the existing content tree at a time. */
.author-workspace { max-width: 980px; margin-inline: auto; }
.publishing-review { max-width: 860px; }
.publishing-review header { margin: 24px 0; }
.publishing-review h1 { font-size: 28px; line-height: 1.3; overflow-wrap: anywhere; }
.publishing-review h2 { font-size: 20px; }
.review-issues { list-style: none; padding: 0; margin: 16px 0; }
.review-issues li { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line-soft); }
.review-issues li > div { min-width: 0; overflow-wrap: anywhere; }
.review-issues p { margin: 6px 0 0; color: var(--muted); }
.review-issues a { flex: 0 0 auto; color: var(--blue); }
.review-warnings > summary { cursor: pointer; padding: 16px 0; }
.review-team { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line-soft); }
.review-team form { display: flex; flex-wrap: wrap; align-items: end; gap: 16px; margin: 20px 0; }
.review-team .field { flex: 1 1 220px; min-width: 0; }
.team-preview-banner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; background: #eef5fd; border-left: 3px solid var(--blue); padding: 16px; margin-bottom: 24px; }
.team-preview-banner > div { min-width: 0; overflow-wrap: anywhere; }
.team-preview-banner p { margin: 6px 0 0; color: var(--muted); font-size: 14px; }
.author-admin .portal-header { align-items: center; margin-bottom: 20px; }
.author-admin .portal-header h1 { font-size: 28px; margin: 0; }
.author-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.author-heading h2 { margin: 0; font-size: 26px; line-height: 1.3; overflow-wrap: anywhere; flex: 1 1 240px; }
.author-breadcrumbs { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 14px; }
.author-breadcrumbs:empty { display: none; }
.author-breadcrumbs button { background: transparent; border: 0; color: var(--blue); text-align: left; padding: 8px 4px; cursor: pointer; font: inherit; font-size: 14px; overflow-wrap: anywhere; }
.author-crumb { display: inline-flex; align-items: center; min-width: 0; max-width: 100%; }
.author-crumb > span { color: var(--muted); padding: 8px 6px; font-size: 14px; }
.author-mode, .author-source { display: flex; gap: 4px; }
.author-mode { background: var(--subtle); padding: 3px; border-radius: 6px; }
.author-mode button, .author-source button { border: 0; background: transparent; border-radius: 4px; padding: 10px 14px; min-height: 42px; font: inherit; font-size: 14px; color: var(--muted); cursor: pointer; }
.author-mode [aria-pressed="true"] { background: white; color: var(--ink); box-shadow: 0 1px 3px #00000012; }
.author-source { border-bottom: 1px solid var(--line-soft); margin-bottom: 22px; }
.author-source [aria-selected="true"] { color: var(--blue); border-bottom: 2px solid var(--blue); border-radius: 0; }
.author-dialog { width: min(620px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); overflow-y: auto; padding: 26px; border: 1px solid var(--line-soft); border-radius: 8px; color: var(--ink); box-shadow: 0 12px 60px #00000020; }
.author-dialog::backdrop { background: #20212455; }
.author-dialog > header { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 24px; }
.author-dialog h2 { font-size: 22px; margin: 0; }
.author-dialog .material-upload-form { border: 0; border-radius: 0; padding: 0; grid-template-columns: minmax(0, 1fr); }
.author-dialog input, .author-dialog select, .author-dialog textarea { max-width: 100%; min-width: 0; }
.author-dialog textarea { resize: vertical; }
.author-dialog .author-form-footer { display: flex; justify-content: flex-end; align-items: center; gap: 16px; margin-top: 8px; }
.author-dialog .editor-save-status { flex: 1; }
.author-dropzone { background: #f8fafd; border: 1px dashed #a9b8c9; border-radius: 6px; padding: 20px; }
.author-dropzone.is-dragging { background: #e8f0fe; border-color: var(--blue); }
.author-dropzone input { border: 0; padding: 0; background: transparent; }
.author-options > summary { padding: 12px 0; color: var(--muted); font-size: 14px; cursor: pointer; }
.author-options .field + .field { margin-top: 14px; }
.author-options.editor-metadata { grid-column: 1 / -1; order: 2; }
.author-options.content-manage { border-top: 1px solid var(--line-soft); }
.author-workspace.is-focused .author-ancestor,
.author-workspace.is-focused .author-current { border: 0; overflow: visible; }
.author-workspace.is-focused .author-ancestor > summary,
.author-workspace.is-focused .author-current > summary,
.author-workspace.is-focused .author-ancestor > .content-editor-body > :not(.content-editor-children-section) { display: none; }
.author-workspace.is-focused .author-ancestor > .content-editor-body { display: block; padding: 0; border: 0; }
.author-workspace.is-focused .author-ancestor > .content-editor-body > .content-editor-children-section > h3,
.author-workspace.is-focused .author-ancestor > .content-editor-body > .content-editor-children-section > .content-editor-empty { display: none; }
.author-workspace.is-focused .content-editor-children { border: 0; padding: 0; }
.author-workspace.is-focused .author-current > .content-editor-body { border: 0; padding: 20px 0; }
.author-workspace.is-focused[data-mode="contents"] .author-current:is([data-editor-kind="course"], [data-editor-kind="lesson"]) > .content-editor-body > :not(.content-editor-children-section) { display: none; }
.author-workspace.is-focused[data-mode="details"] .author-current > .content-editor-body > .content-editor-children-section { display: none; }
.author-workspace.is-focused .content-edit-form { max-width: 760px; grid-template-columns: minmax(0, 1fr); }
.author-workspace.is-focused .content-edit-form > .check-pill { justify-self: start; }
.author-workspace.is-focused .content-edit-form .editor-save-actions { order: 3; }
.author-workspace.is-focused .content-editor-row > summary::before { content: "\203a"; font-size: 22px; }
.author-workspace.is-focused > .archive-drawer { margin-top: 24px; }
.author-workspace.is-focused .material-file-editor { max-width: 760px; }
.author-workspace .content-editor-body { min-width: 0; }
@media (max-width: 640px) {
  .author-heading h2 { font-size: 22px; }
  .author-heading .form-actions { width: 100%; justify-content: space-between; }
  .author-dialog { padding: 18px; }
  .author-mode button, .author-source button { padding: 10px; }
  .author-dialog .author-form-footer { flex-wrap: wrap; }
}

.content-editor-row {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: 0;
  overflow: hidden;
}

.content-editor-row.depth-1 {
  margin-left: 0;
}

.content-editor-row.depth-2 {
  margin-left: 0;
}

.content-editor-row > summary {
  align-items: center;
  cursor: pointer;
  display: grid;
  gap: 12px;
  grid-template-columns: 20px 76px minmax(0, 1fr) auto auto;
  list-style: none;
  min-height: 54px;
  padding: 10px 14px;
}

.content-editor-row > summary::-webkit-details-marker {
  display: none;
}
.content-editor-row > summary::marker { content: ""; }
.content-editor-row > summary:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }

.content-editor-row > summary::before {
  align-items: center;
  color: var(--muted);
  content: "+";
  display: inline-flex;
  font-size: 1.1rem;
  justify-content: center;
}

.content-editor-row[open] > summary::before {
  content: "-";
}

.content-editor-row > summary:hover {
  background: var(--subtle);
}

.content-editor-kind {
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.content-editor-title {
  font-size: 0.94rem;
  font-weight: 600;
  min-width: 0;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.content-editor-count,
.archive-drawer > summary span {
  align-items: center;
  background: var(--subtle);
  border-radius: 999px;
  color: var(--muted);
  display: inline-flex;
  font-size: 0.72rem;
  font-weight: 700;
  height: 24px;
  justify-content: center;
  min-width: 24px;
  padding: 0 7px;
}

.content-status {
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 5px 8px;
}

.status-published {
  background: var(--green-bg);
  color: var(--green);
}

.status-draft {
  background: #fef7e0;
  color: #8a5b00;
}

.status-archived {
  background: var(--subtle);
  color: var(--muted);
}

.content-editor-body {
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 20px;
  padding: 18px;
}
.content-editor-children-section h3 { font-size: 16px; margin: 0 0 12px; }
.content-editor-children { border-left: 2px solid var(--line-soft); padding-left: 10px; }
.content-editor-count[hidden], .content-editor-empty[hidden] { display: none; }
.content-editor-empty { font-size: 14px; color: var(--muted); }

.content-edit-form {
  align-items: end;
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.content-edit-form .content-body-field {
  grid-column: 1 / -1;
}

.content-edit-form textarea {
  min-height: 88px;
}

.content-edit-form .content-body-field textarea {
  min-height: 150px;
}

.content-edit-form small,
.material-file-editor small {
  color: var(--muted);
  display: block;
  font-size: 0.8rem;
  line-height: 1.4;
  margin-top: 5px;
}

.material-file-editor {
  align-items: center;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding-top: 18px;
}

.material-file-editor > div:first-child {
  display: grid;
  gap: 4px;
}

.material-replace-form {
  align-items: end;
  display: grid;
  gap: 10px;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr) auto;
}

.content-row-actions {
  align-items: center;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 16px;
}

.square-button {
  font-size: 1.15rem;
  height: 38px;
  padding: 0;
  width: 38px;
}

.content-delete-control {
  margin-left: auto;
}

.content-delete-control > summary {
  color: var(--red);
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 600;
  list-style: none;
  padding: 8px;
}

.content-delete-control > summary::-webkit-details-marker {
  display: none;
}

.content-delete-control form {
  align-items: center;
  background: var(--red-bg);
  border: 1px solid #fad2cf;
  border-radius: var(--radius);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
  padding: 12px;
}

.content-delete-control label {
  color: var(--muted);
  font-size: 0.84rem;
}

.content-delete-control input {
  accent-color: var(--red);
}

.archive-drawer {
  border-top: 1px solid var(--line-soft);
  margin-top: 22px;
  padding-top: 18px;
}

.archive-drawer > summary {
  align-items: center;
  color: var(--muted);
  cursor: pointer;
  display: inline-flex;
  font-size: 0.9rem;
  font-weight: 600;
  gap: 8px;
}

.archived-list {
  margin-top: 12px;
}

.content-editor-row.is-archived {
  background: #fafafa;
}

.assignment-row {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
  padding: 18px;
}

.visibility-list {
  border-top: 1px solid var(--line);
}

.visibility-item {
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  margin: 0;
  min-width: 0;
}

.visibility-item > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 12px;
  cursor: pointer;
  list-style: none;
}

.visibility-item > summary::-webkit-details-marker { display: none; }
.visibility-item > summary::marker { content: ""; }
.visibility-item > summary::before {
  content: "";
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border: solid var(--muted);
  border-width: 0 2px 2px 0;
  transform: rotate(-45deg);
}
.visibility-item[open] > summary::before { transform: rotate(45deg); }
.visibility-item > summary:hover { background: #f5f8fc; }
.visibility-item > summary:focus-visible { outline: 2px solid var(--blue); outline-offset: -2px; }
.visibility-item-heading { display: grid; gap: 4px; min-width: 0; overflow-wrap: anywhere; }
.visibility-item-heading strong { font-size: 17px; font-weight: 600; line-height: 1.4; }
.visibility-kind { font-size: 12px; color: var(--muted); text-transform: capitalize; }
.visibility-description { font-size: 13px; color: var(--muted); font-weight: 400; }
.visibility-item-body { padding: 0 12px 12px 34px; }
.visibility-form { display: grid; gap: 16px; padding: 8px 0 20px; max-width: 760px; }
.visibility-mode-label { display: grid; gap: 6px; max-width: 340px; font-size: 13px; }
.visibility-mode-label select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
}
.visibility-mode-label select:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.visibility-teams { border: 0; padding: 0; margin: 0; min-width: 0; }
.visibility-teams legend { padding: 0 0 8px; font-size: 13px; }
.visibility-teams[hidden] { display: none; }
.visibility-save { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.visibility-save [role="status"] { font-size: 13px; color: var(--muted); }
.visibility-children { border-top: 1px solid var(--line); border-left: 2px solid #e8eef6; padding-left: 8px; }
.visibility-children > .visibility-item:last-child { border-bottom: 0; }
.visibility-other { margin-top: 24px; }
.visibility-other > summary { cursor: pointer; padding: 12px 0; }

@media (max-width: 640px) {
  .visibility-item > summary { padding: 14px 4px; gap: 10px; }
  .visibility-item-body { padding-left: 10px; padding-right: 0; }
  .visibility-children { padding-left: 4px; }
  .visibility-item-heading strong { font-size: 15px; }
  .visibility-teams .check-pill { max-width: 100%; height: auto; padding-block: 6px; overflow-wrap: anywhere; }
}

.assignment-row h3,
.request-row h3 {
  margin-bottom: 6px;
}

.section-note {
  margin-top: -8px;
}

.current-team-list,
.checkbox-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.current-team-list {
  margin-top: 14px;
}

.check-pill,
.team-remove-button {
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  gap: 8px;
  min-height: 34px;
  padding: 0 12px 0 10px;
}

.check-pill input {
  accent-color: var(--blue);
}

.check-pill span,
.team-remove-button span {
  font-size: 0.88rem;
  font-weight: 500;
}

.team-remove-button strong {
  color: var(--red);
  font-size: 0.72rem;
  text-transform: none;
}

.team-remove-button:hover {
  background: var(--red-bg);
  border-color: #fad2cf;
}

.assignment-form {
  display: grid;
  gap: 12px;
  justify-items: start;
}

.request-row {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding: 18px;
}

.danger-button {
  background: var(--red);
  border-color: var(--red);
}

.danger-button:hover {
  background: #8c1d18;
  border-color: #8c1d18;
}

.delete-user-form {
  align-items: center;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  grid-column: 1 / -1;
  justify-content: flex-end;
  padding-top: 14px;
}

.delete-user-form label {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  gap: 8px;
  margin-right: auto;
}

.delete-user-form input {
  accent-color: var(--red);
}

.admin-table {
  margin-top: 28px;
  overflow: hidden;
}

.admin-table table {
  border-collapse: collapse;
  width: 100%;
}

.admin-table th,
.admin-table td {
  border-bottom: 1px solid var(--line-soft);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

.admin-table th {
  background: var(--subtle);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
}

.submissions-table td:first-child span,
.submissions-table td:nth-child(2) span,
.submissions-table td:nth-child(4) span {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  margin-top: 3px;
}

.submission-details summary {
  color: var(--blue);
  cursor: pointer;
  font-weight: 600;
}

.submission-json {
  background: var(--subtle);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 0.78rem;
  line-height: 1.5;
  margin: 10px 0 0;
  max-height: 360px;
  max-width: min(720px, 70vw);
  overflow: auto;
  padding: 12px;
  white-space: pre-wrap;
}

.live-material-shell {
  display: grid;
  gap: 24px;
}

.live-material-toolbar,
.admin-page-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.live-material-toolbar {
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted);
  justify-content: space-between;
  padding-bottom: 14px;
}

.live-dashboard-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.live-stat-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  gap: 8px;
  padding: 18px;
}

.live-stat-card span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 600;
}

.live-stat-card strong {
  color: var(--ink);
  font-size: 2rem;
  line-height: 1;
}

.live-section {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.live-link-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.live-link-list a {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 8px 12px;
}

.live-link-list a:hover {
  background: #f1f6fe;
  border-color: #d2e3fc;
  color: var(--blue-hover);
}

.live-poll-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.live-chart-stage { margin: 24px 0; padding: 24px 0; border-block: 1px solid var(--line); scroll-margin-top: 96px; background: #fff; }
.live-chart-controls { display: flex; flex-wrap: wrap; align-items: end; gap: 16px; margin-bottom: 24px; }
.live-chart-controls > label { display: grid; gap: 6px; font-size: 13px; flex: 1 1 320px; min-width: 0; }
.live-chart-controls select { width: 100%; min-width: 0; min-height: 44px; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; font: inherit; color: var(--ink); background: #fff; }
.live-chart-controls .icon-button { min-height: 44px; }
.live-chart-modes { display: flex; gap: 0; padding: 0; margin: 0; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.live-chart-modes legend { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.live-chart-modes label { display: flex; gap: 6px; align-items: center; min-height: 42px; padding: 0 12px; font-size: 14px; cursor: pointer; }
.live-chart-modes label:has(input:checked) { background: #e8f0fe; color: var(--blue); }
.live-chart-stage h2 { font-size: 26px; line-height: 1.3; overflow-wrap: anywhere; max-width: 1000px; }
.live-chart-group, .live-chart-count, .live-chart-connection { color: var(--muted); font-size: 14px; }
.live-chart-count { margin: 8px 0 24px; }
.live-chart-connection { margin: 24px 0 0; }
.live-chart-stage.is-stale .live-chart-connection { color: #976313; }
.live-chart-plot { display: grid; gap: 32px; align-items: center; min-height: 240px; }
.live-chart-plot[data-mode="donut"] { grid-template-columns: minmax(160px, 280px) minmax(0, 1fr); }
.live-chart-donut { width: 100%; aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center; position: relative; }
.live-chart-donut::before { content: ""; width: 66%; aspect-ratio: 1; background: #fff; border-radius: 50%; position: absolute; }
.live-chart-donut > span { position: relative; font-size: 40px; font-weight: 600; }
.live-chart-bars { display: grid; gap: 20px; min-width: 0; }
.live-chart-label { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.live-chart-label i { flex: 0 0 10px; height: 10px; border-radius: 2px; }
.live-chart-label strong { flex: 1; min-width: 0; overflow-wrap: anywhere; font-size: 16px; font-weight: 500; line-height: 1.4; }
.live-chart-label > span { flex: 0 0 auto; font-size: 15px; font-variant-numeric: tabular-nums; }
.live-chart-track { height: 26px; background: #f0f3f7; border-radius: 4px; overflow: hidden; }
.live-chart-track > div { height: 100%; transition: width 400ms ease; min-width: 0; }
.live-chart-plot[data-mode="donut"] .live-chart-track { display: none; }
body.is-chart-presenting { overflow: hidden; }
.live-chart-stage.is-fullscreen { position: fixed; inset: 0; z-index: 1000; width: 100%; height: 100dvh; padding: 32px; margin: 0; border: 0; overflow: auto; }
.live-chart-stage.is-fullscreen h2 { font-size: 36px; }
.live-chart-stage.is-fullscreen .live-chart-label strong { font-size: 22px; }
.live-chart-stage.is-fullscreen .live-chart-plot { max-width: 1200px; margin: 0 auto; }
.live-chart-stage.is-fullscreen .live-chart-plot[data-mode="donut"] { grid-template-columns: minmax(200px, 420px) minmax(0, 1fr); }
.live-chart-stage.is-fullscreen .live-chart-label > span { font-size: 22px; }
.live-chart-stage.is-fullscreen .live-chart-donut > span { font-size: 56px; }
.live-chart-stage.is-fullscreen .live-chart-track { height: 38px; }
.live-chart-stage.is-fullscreen::backdrop { background: #fff; }
@media (max-width: 640px) {
  .live-chart-stage.is-fullscreen { padding: 16px; }
  .live-chart-stage h2, .live-chart-stage.is-fullscreen h2 { font-size: 22px; }
  .live-chart-stage.is-fullscreen .live-chart-label strong { font-size: 16px; }
  .live-chart-plot[data-mode="donut"], .live-chart-stage.is-fullscreen .live-chart-plot[data-mode="donut"] { grid-template-columns: minmax(0, 1fr); }
  .live-chart-stage.is-fullscreen .live-chart-label > span { font-size: 15px; }
  .live-chart-donut { max-width: 220px; justify-self: center; }
}
@media (prefers-reduced-motion: reduce) { .live-chart-track > div { transition: none; } }

.live-poll-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  display: grid;
  gap: 14px;
  padding: 18px;
}

.live-poll-heading {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.live-poll-heading span {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.live-poll-heading a,
.materials-table .small-link,
.submissions-table .small-link {
  color: var(--blue);
  display: inline-flex;
  font-size: 0.84rem;
  font-weight: 600;
  margin-top: 6px;
}

.live-poll-card h3 {
  font-size: 1.1rem;
}

.live-poll-card p {
  color: var(--muted);
}

.live-option-row {
  display: grid;
  gap: 8px;
}

.live-option-row div:first-child {
  align-items: baseline;
  display: flex;
  gap: 10px;
  justify-content: space-between;
}

.live-option-row span {
  color: var(--muted);
  font-size: 0.86rem;
}

.live-bar {
  background: var(--subtle);
  border-radius: 999px;
  height: 8px;
  overflow: hidden;
}

.live-bar span {
  background: var(--blue);
  border-radius: inherit;
  display: block;
  height: 100%;
}

.live-respondents-table td:first-child span {
  color: var(--muted);
  display: block;
  font-size: 0.84rem;
  margin-top: 3px;
}

.account-panel {
  margin-top: 20px;
}

.account-heading {
  margin-bottom: 10px;
}

.account-recovery-note {
  margin-top: 16px;
}

.account-recovery-note .form-actions {
  margin-top: 12px;
}

.account-panel h2 {
  font-size: clamp(1.35rem, 2vw, 1.8rem);
}

.invite-link {
  background: var(--subtle);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: var(--ink);
  display: block;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  margin-top: 10px;
  overflow-wrap: anywhere;
  padding: 12px;
}

@media (max-width: 980px) {
  .hero,
  .intro-section,
  .section-heading,
  .section-heading.compact,
  .people-grid,
  .portal-workspace,
  .portal-grid,
  .portal-lesson-columns,
  .simulator-grid,
  .team-create-form,
  .material-upload-form,
  .content-builder,
  .content-edit-form,
  .material-file-editor,
  .material-replace-form,
  .assignment-row,
  .live-dashboard-grid,
  .live-poll-grid,
  .simulation-lobby,
  .simulation-offer-grid {
    grid-template-columns: 1fr;
  }

  .simulation-lobby > div:first-child {
    border-bottom: 1px solid var(--line-soft);
    border-right: 0;
    padding-bottom: 22px;
    padding-right: 0;
  }

  .content-edit-form .content-body-field,
  .material-replace-form {
    grid-column: auto;
  }

  .hero {
    min-height: auto;
  }

  .principles {
    grid-template-columns: 1fr;
  }

  .principles article,
  .portal-card {
    min-height: auto;
  }

  .contact-section {
    align-items: flex-start;
    flex-direction: column;
  }

  .portal-sidebar {
    position: static;
    max-height: 65svh;
    scroll-margin-top: 88px;
  }

  .portal-stepper .portal-menu-toggle {
    display: inline-flex;
    margin-bottom: 0;
  }

  .portal-sidebar.is-mobile-collapsed {
    display: none;
  }

  .portal-toolbar {
    grid-template-columns: minmax(0, 1fr);
  }

  .portal-stepper {
    justify-content: space-between;
  }
}

@media (max-width: 720px) {
  .portal-panel-heading h2 {
    font-size: 1.4rem;
  }

  .simulation-offer .button {
    min-height: 44px;
    height: auto;
    padding-block: 10px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 14px 20px;
    position: static;
  }

  .header-actions {
    justify-content: space-between;
    width: 100%;
  }

  .nav {
    flex-wrap: wrap;
    gap: 4px;
  }

  .nav a {
    padding-inline: 10px;
  }

  .account-menu {
    margin-left: auto;
  }

  .account-popover {
    min-width: min(280px, 86vw);
  }

  .content-editor-row.depth-1 {
    margin-left: 0;
  }

  .content-editor-row.depth-2 {
    margin-left: 0;
  }
  .content-editor-body { padding: 12px 8px; }
  .content-editor-children { padding-left: 4px; }

  .content-editor-row > summary {
    gap: 4px 10px;
    grid-template-columns: 20px minmax(0, 1fr) auto;
    padding-inline: 10px;
  }

  .content-editor-row > summary::before {
    grid-column: 1;
    grid-row: 1 / 3;
  }

  .content-editor-kind,
  .content-editor-title {
    grid-column: 2;
  }

  .content-editor-count {
    grid-column: 3;
    grid-row: 1;
  }

  .content-status {
    grid-column: 3;
    grid-row: 2;
  }

  .hero,
  .intro-section,
  .people-section,
  .contact-section,
  .app-shell,
  .principles {
    padding-left: 20px;
    padding-right: 20px;
  }

  h1 {
    font-size: clamp(2.4rem, 13vw, 4rem);
  }

  .person-card {
    grid-template-columns: 80px minmax(0, 1fr);
    padding: 20px;
  }

  .person-photo {
    width: 80px;
  }

  .portal-header,
  .request-row {
    align-items: stretch;
    flex-direction: column;
    grid-template-columns: 1fr;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    padding-inline: 20px;
  }
}

@media (max-width: 460px) {
  .person-card {
    grid-template-columns: 1fr;
  }
}

.portal-tool-button {
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  padding: 0;
}

.editor-save-actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.editor-save-status {
  color: var(--muted);
  font-size: 0.875rem;
  overflow-wrap: anywhere;
}

.editor-save-status.is-error {
  color: #b3261e;
}

.content-editor-row {
  scroll-margin-top: 96px;
}

.content-editor-row.has-unsaved-changes > summary {
  border-left: 3px solid var(--blue);
}

.content-preview-dialog {
  position: fixed;
  inset: 0;
  margin: auto;
  width: min(1200px, calc(100vw - 32px));
  height: calc(100dvh - 48px);
  max-width: none;
  max-height: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0;
  background: #ffffff;
  color: var(--ink);
}

.content-preview-dialog[open] {
  display: flex;
  flex-direction: column;
}

.content-preview-dialog::backdrop {
  background: rgb(0 0 0 / 45%);
}

.content-preview-dialog > header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex: 0 0 auto;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
}

.content-preview-dialog h2 {
  font-size: 1rem;
  margin: 0;
}

.content-preview-dialog > iframe {
  flex: 1;
  width: 100%;
  min-height: 0;
  border: 0;
}

.content-preview-page {
  background: #ffffff;
  margin: 0;
}

.upload-feedback {
  grid-column: 1 / -1;
  min-width: 0;
  width: 100%;
}

.recovery-help {
  margin: 20px 0 0;
  font-size: 0.875rem;
  line-height: 1.6;
}

.auth-card.recovery-card h1 {
  font-size: 2rem;
  line-height: 1.2;
}

.auth-card.recovery-card .hero-text {
  font-size: 1rem;
  line-height: 1.6;
}

.recovery-help a {
  color: var(--blue);
  text-decoration: underline;
}

.password-visibility {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
}

.password-visibility input {
  width: 16px;
  height: 16px;
}

.upload-file-info,
.upload-status,
.upload-result {
  overflow-wrap: anywhere;
  font-size: 0.875rem;
}

.upload-status {
  margin: 6px 0;
}

.upload-status.is-error {
  color: #b3261e;
}

.upload-progress {
  display: block;
  width: 100%;
  height: 8px;
  margin-top: 12px;
  accent-color: var(--blue);
}

.upload-result {
  display: inline-block;
  padding: 8px 0;
}

[data-material-upload] input[type="file"] {
  max-width: 100%;
  min-width: 0;
}

.content-preview-page .portal-panel,
.preview-simulation {
  border: 0;
  box-shadow: none;
  border-radius: 0;
  min-width: 0;
}

.portal-tool-button span,
.portal-tool-button svg {
  display: block;
}

.portal-tool-button > span {
  min-width: 0;
  width: 20px;
  height: 20px;
  margin: 0;
}

.portal-tool-button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

body.is-presenting {
  overflow: hidden;
}

body.is-presenting .site-header,
body.is-presenting .site-footer,
body.is-presenting .portal-header,
body.is-presenting .portal-sidebar,
body.is-presenting .portal-menu-toggle {
  display: none;
}

.portal-main.is-presenting {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: #ffffff;
  width: 100%;
  height: 100dvh;
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0;
  overflow: hidden;
  padding: 0;
}

.portal-main.is-presenting::backdrop {
  background: #ffffff;
}

.is-presenting .portal-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  box-shadow: none;
  padding: 10px 24px;
  gap: 16px;
  position: static;
}

.is-presenting .presentation-title {
  grid-row: 1;
  grid-column: 1;
  min-width: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.is-presenting .portal-stepper {
  grid-row: 1;
  grid-column: 2;
}

.is-presenting .portal-search,
.is-presenting .portal-search-results,
.is-presenting .portal-breadcrumbs,
.is-presenting .portal-page-nav,
.is-presenting .portal-search-status,
.is-presenting .portal-view-modes,
.is-presenting .progress-control,
.is-presenting .course-progress {
  display: none !important;
}

.is-presenting [data-portal-overview][hidden] { display: block !important; }
.is-presenting [data-portal-children] { display: none !important; }

.is-presenting .portal-panel {
  margin: 0;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  min-height: 0;
  min-width: 0;
  overflow: auto;
  overscroll-behavior: contain;
  align-content: start;
  padding: 32px 48px;
  scroll-margin: 0;
}

.is-presenting .portal-panel-heading > h2 {
  font-size: 2.25rem;
  line-height: 1.2;
}

.is-presenting .portal-panel-heading > p,
.is-presenting .portal-body > p {
  font-size: 1.25rem;
  line-height: 1.6;
  max-width: 100%;
}

.is-presenting .presentation-embedded {
  display: flex;
  flex-direction: column;
  padding: 16px 24px;
}

.is-presenting .presentation-embedded > [data-portal-overview] {
  display: flex !important;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}
.is-presenting .portal-branch.presentation-embedded > .portal-panel-heading,
.is-presenting .presentation-embedded > [data-portal-overview] > p { display: none; }
.is-presenting .portal-branch-heading h2 { font-size: 36px; }

.is-presenting .presentation-embedded > .portal-panel-heading,
.is-presenting .presentation-embedded .portal-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  width: 100%;
  gap: 12px;
}

.is-presenting .presentation-embedded .portal-panel-heading > h2,
.is-presenting .presentation-embedded .portal-panel-heading > .tag,
.is-presenting .presentation-embedded .portal-panel-heading > p {
  display: none;
}

.is-presenting .presentation-embedded > .portal-lesson-columns,
.is-presenting .presentation-embedded > .portal-panel-section,
.is-presenting .presentation-embedded .portal-body > p {
  display: none;
}

.is-presenting .portal-embed-frame,
.is-presenting .portal-video-frame {
  flex: 1;
  min-height: 240px;
  aspect-ratio: auto;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.is-presenting .portal-embed-frame iframe,
.is-presenting .portal-video-frame iframe,
.is-presenting .portal-video-frame video {
  height: 100%;
  min-height: 240px;
  object-fit: contain;
}

@media (max-width: 720px) {
  .is-presenting .portal-toolbar {
    padding: 8px 12px;
    gap: 8px;
  }

  .is-presenting .portal-stepper {
    gap: 4px;
  }

  .is-presenting .portal-stepper > span {
    min-width: 52px;
    font-size: 0.75rem;
  }

  .is-presenting .presentation-title {
    font-size: 0.875rem;
  }

  .is-presenting .portal-panel {
    padding: 20px;
  }

  .is-presenting .portal-panel-heading > h2 {
    font-size: 1.75rem;
  }

  .is-presenting .presentation-embedded {
    padding: 8px;
  }
}