/* SkillMetric feature presentation. Shared primitives/shell live in design-system.css. */
.shell {min-height: 100vh; display: grid; grid-template-columns: var(--ds-sidebar-width) minmax(0, 1fr);}
.main {min-width: 0;}
.search {min-width: 260px; max-width: 380px;}
@media (max-width: 860px) {
.shell {display: block;}
}
@media (max-width: 620px) {
.search {min-width: 100%;}
}
.continue-learning {display:flex; align-items:center; justify-content:space-between; gap:24px; background:var(--ds-surface); border:1px solid var(--ds-border); border-radius:20px; padding:24px; margin-bottom:24px; box-shadow:0 10px 28px rgba(20,35,70,.05);}
.continue-copy {min-width:0; flex:1;}
.continue-copy h2 {margin:6px 0 8px; font-size:24px; letter-spacing:-.03em;}
.continue-copy p {margin:0 0 14px; color:var(--ds-text-muted);}
.continue-progress-row {display:grid; grid-template-columns:minmax(0,420px) auto; align-items:center; gap:12px; margin-bottom:7px;}
.course-progress-line {display:grid; grid-template-columns:1fr auto; align-items:center; gap:10px;}
@media (max-width: 760px) {
.continue-progress-row {grid-template-columns:1fr auto;}
}
.admin-login-code {display: inline-block;
  width: fit-content;
  max-width: 100%;
  padding: 5px 8px;
  border: 1px solid #dfe5ee;
  border-radius: 8px;
  background: #f5f7fa;
  color: #23324a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  overflow-wrap: anywhere;}
.success-text {align-items: center;}
.shell {min-height: 100svh; display: flex; flex-direction: column;}
.main {flex: 1; width: 100%; display: flex; flex-direction: column;}
.continue-learning {background: #e6f3ef; border-color: #cfe5db; border-radius: 20px; padding: 30px; box-shadow: none;}
.continue-copy h2 {font-size: 27px; line-height: 1.25; margin: 9px 0 12px;}
.continue-copy p {color: var(--ds-text-secondary);}
.continue-learning > .btn {flex-shrink: 0;}
.continue-learning .progress-track {background: var(--ds-accent-border);}
.course-progress-line strong {font-size: 14px; color: var(--ds-accent);}
.admin-login-code {background: #eaf1e3; color: #3b5735; border-color: #d1dfc5; font-size: 15px;}
@media (max-width: 760px) {
.continue-learning {padding: 24px;}
.continue-copy h2 {font-size: 24px;}
.continue-learning > .btn {width: 100%;}
}
@media (max-width: 760px) {
.course-complete-actions .btn {flex: 1 1 180px;}
}
@media (max-width: 560px) {
.course-complete-actions .btn {width: 100%;}
}
.admin-shortcuts {display: grid; gap: 10px;}
.admin-shortcut {display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  color: var(--ds-text);
  text-align: left;
  text-decoration: none;
  background: var(--ds-surface-subtle);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-md);}
.admin-shortcut:hover {background: var(--ds-accent-soft); border-color: #a1ded2;}
.admin-shortcut-icon {display: grid; place-items: center; width: 38px; height: 38px; color: var(--ds-accent); background: #fff; border: 1px solid var(--ds-border); border-radius: 10px;}
.admin-shortcut-copy {display: grid; gap: 2px;}
.admin-shortcut-copy strong {font-size: 14px;}
.admin-shortcut-copy span {color: var(--ds-text-secondary); font-size: 12px; line-height: 1.4;}
.admin-shortcut > .ui-icon {color: var(--ds-text-muted); width: 18px; height: 18px;}
.course-next {margin-top: 8px; color: var(--ds-text-secondary); font-size: 13px; line-height: 1.45;}
.certificate-toolbar {display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;}
thead th {color: var(--ds-text-secondary); background: var(--ds-surface-subtle); border-color: var(--ds-border); font-size: 12px; text-transform: uppercase; letter-spacing: .045em;}
tbody td {border-color: var(--ds-border); vertical-align: middle;}
.table-primary {display: grid; gap: 3px;}
.table-primary > strong,
.table-primary > a {color: var(--ds-text); font-weight: 700;}
.table-secondary {color: var(--ds-text-secondary); font-size: 13px; line-height: 1.4;}
.admin-course-primary {gap: 6px;}
.admin-course-table th,
.admin-course-table td {vertical-align: middle;}
.admin-course-main-cell {min-width: 330px;}
.admin-course-actions-column {width: 112px; white-space: nowrap;}
.admin-course-status-column {width: 138px; white-space: nowrap;}
.admin-course-more-column {width: 66px; text-align: right;}
.admin-course-row-actions {display: flex; align-items: center; gap: 6px;}
.admin-course-row-actions .btn-icon {display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  color: var(--ds-text-secondary);
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  text-decoration: none;}
.admin-course-row-actions .btn-icon:hover {color: var(--ds-accent);
  background: var(--ds-accent-soft);
  border-color: color-mix(in srgb, var(--ds-accent) 35%, var(--ds-border));}
.admin-course-edit-button {color: var(--ds-accent);}
.admin-course-action-icon .ui-icon {width: 18px; height: 18px;}
@media (max-width: 1120px) {
.admin-course-certificate-column {display: none;}
.admin-course-table {table-layout: fixed;}
.admin-course-main-cell {min-width: 0;}
.admin-course-table-wrap {overflow: visible;}
}
@media (max-width: 700px) {
.admin-course-table {min-width: 620px;}
.admin-course-table-wrap {overflow-x: auto; overflow-y: visible;}
}
.admin-login-code {padding: 0; color: var(--ds-text-secondary); background: transparent; border: 0; font: inherit;}
.certificate-card {display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-lg);}
.certificate-card-mark {display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  color: var(--ds-accent);
  background: var(--ds-accent-soft);
  border: 1px solid #b8eae0;
  border-radius: 16px;}
.certificate-card-mark .ui-icon {width: 28px; height: 28px;}
.certificate-card-copy {min-width: 0;}
.certificate-card-copy h3 {margin: 4px 0 7px;}
.certificate-card-meta {color: var(--ds-text-secondary); font-size: 13px;}
.certificate-card-actions {display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end;}
.certificate-card-actions .btn-icon {border-color: var(--ds-border); background: var(--ds-surface-subtle);}
.certificate-id {font-family: ui-monospace, SFMono-Regular, Consolas, monospace;}
.admin-page .hero {display: none;}
@media (max-width: 860px) {
.certificate-card {grid-template-columns: 52px minmax(0, 1fr);}
.certificate-card-actions {grid-column: 1 / -1; justify-content: flex-start;}
}
@media (max-width: 640px) {
.certificate-toolbar {align-items: stretch; flex-direction: column;}
.certificate-card {grid-template-columns: 1fr;}
.certificate-card-mark {width: 52px; height: 52px;}
}
.question {padding-block: 22px 2px;}
.question-head {display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  column-gap: 12px;
  align-items: start;
  margin-bottom: 12px;}
.question-number {display: block;
  margin: 0;
  padding-top: 1px;
  color: var(--ds-text);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.55;
  font-variant-numeric: tabular-nums;}
.question-prompt {min-width: 0;
  color: var(--ds-text);
  font-size: 18px;
  line-height: 1.6;}
.question-prompt > .content-block,
.question-prompt > .content-block:first-child,
.option-content > .content-block,
.option-content > .content-block:first-child {margin: 0;}
.question-prompt .content-block + .content-block {margin-top: 10px;}
.question-prompt p,
.option-content p {margin: 0;}
.question-instruction {margin: 0 0 12px 44px;
  color: var(--ds-text-secondary);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;}
.question-options {display: grid;
  gap: 10px;
  margin-left: 44px;}
.option {display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  align-items: start;
  gap: 12px;
  min-height: 0;
  margin: 0;
  padding: 14px 16px;
  cursor: pointer;}
.option-control {display: grid;
  place-items: center;
  width: 26px;
  min-height: 26px;}
.option-control input {width: 20px;
  height: 20px;
  margin: 2px 0 0;
  accent-color: var(--ds-primary);
  cursor: pointer;}
.option-content {min-width: 0;
  color: var(--ds-text);
  font-size: 16px;
  line-height: 1.6;}
.question-answer-field {margin-left: 44px;}
.question-prompt .inline-code,
.option-content .inline-code {padding: .1em .35em .14em;
  border-color: var(--ds-border-strong);
  background: var(--ds-surface-muted);
  color: var(--ds-primary-strong);
  box-shadow: none;
  font-size: .9em;
  font-weight: 650;
  white-space: break-spaces;}
.question-prompt .code-snippet,
.option-content .code-snippet {margin-block: 12px 4px;
  font-size: 14px;}
@media (max-width: 680px) {
.question-head {grid-template-columns: 26px minmax(0, 1fr); column-gap: 8px;}
.question-number {font-size: 15px;}
.question-prompt {font-size: 16px;}
.question-instruction,
.question-options,
.question-answer-field {margin-left: 34px;}
.option {grid-template-columns: 24px minmax(0, 1fr); gap: 10px; padding: 12px 13px;}
.option-content {font-size: 15px;}
}
.definition-block {max-width: 780px;
  margin: 24px 0;
  padding: 20px 22px;
  border: 1px solid var(--ds-border);
  border-left: 4px solid var(--ds-accent);
  border-radius: var(--ds-radius-lg);
  background: var(--ds-surface-subtle);}
.definition-heading {display: flex; align-items: baseline; gap: 10px 14px; flex-wrap: wrap;}
.definition-label {display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--ds-accent-soft);
  color: var(--ds-accent-strong);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .04em;
  text-transform: uppercase;}
.definition-term {color: var(--ds-text-primary);
  font-size: 20px;
  line-height: 1.35;
  font-style: normal;
  font-weight: 750;}
.definition-text {margin-top: 10px; color: var(--ds-text-primary);}
.definition-text > :first-child,
.definition-example .markdown-content > :first-child {margin-top: 0;}
.definition-text > :last-child,
.definition-example .markdown-content > :last-child {margin-bottom: 0;}
.definition-aliases {margin-top: 8px; color: var(--ds-text-secondary); font-size: 14px;}
.definition-example {margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--ds-border-subtle, var(--ds-border));
  color: var(--ds-text-secondary);}
.definition-example > strong {color: var(--ds-text-primary); font-size: 13px;}
.definition-example .markdown-content {margin-top: 5px;}
.definition-source {margin-top: 12px;}
.definition-code {border-left-color: var(--ds-accent);}
.definition-glossary {background: var(--ds-surface);}
@media (max-width: 640px) {
.definition-block {padding: 16px; margin: 18px 0;}
.definition-term {font-size: 18px;}
}
.course-certificate-select {min-width: 210px; max-width: 260px; height: 40px; padding: 7px 34px 7px 11px; font-size: 14px;}
@media (max-width: 760px) {
.course-certificate-select {width: 100%; max-width: none;}
}
.course-audience-badge {background: rgba(255, 255, 255, .94) !important;
  color: #205d50 !important;
  border: 1px solid rgba(89, 139, 125, .28) !important;
  box-shadow: 0 5px 18px rgba(22, 72, 61, .08);
  backdrop-filter: blur(8px);}
.course-category-eyebrow {margin-bottom: 8px;
  color: var(--ds-accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .055em;
  text-transform: uppercase;}
.admin-course-action-icon {display: inline-flex; align-items: center; justify-content: center;}
.security-grid {display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, .75fr);
  gap: var(--ds-space-5);
  align-items: start;}
.security-card {max-width: 820px;}
.security-card-icon {display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: var(--ds-accent);
  background: var(--ds-accent-soft);
  border: 1px solid #a1ded2;
  border-radius: 12px;}
.security-form {max-width: 620px;}
.security-warning {display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 4px 0 20px;
  padding: 14px 16px;
  color: var(--ds-text-secondary);
  background: var(--ds-warning-soft);
  border: 1px solid #ead89f;
  border-radius: var(--ds-radius-md);
  font-size: 13px;
  line-height: 1.5;}
.security-warning strong {color: var(--ds-text);}
.security-actions {display: flex; justify-content: flex-start;}
.security-note {position: sticky; top: 20px;}
@media (max-width: 900px) {
.security-grid {grid-template-columns: 1fr;}
.security-card {max-width: none;}
.security-note {position: static;}
}
.author-profile-hero {position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: -4px 0 28px;
  padding: clamp(28px, 4.8vw, 58px);
  color: #f6fffc;
  background:
    radial-gradient(circle at 14% 18%, rgba(140, 255, 220, .20), transparent 28%),
    radial-gradient(circle at 82% 16%, rgba(103, 186, 255, .18), transparent 25%),
    linear-gradient(135deg, #102e2a 0%, #0c4e47 45%, #096f64 100%);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: 28px;
  box-shadow: 0 28px 72px rgba(12, 63, 57, .19);}
.author-hero-glow {position: absolute;
  z-index: -1;
  width: 420px;
  height: 420px;
  right: -150px;
  bottom: -240px;
  border-radius: 50%;
  background: rgba(196, 255, 237, .12);
  filter: blur(2px);}
.author-hero-orbit {position: absolute;
  z-index: -1;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 50%;
  pointer-events: none;}
.author-hero-orbit-one {width: 380px; height: 380px; right: -100px; top: -210px;}
.author-hero-orbit-two {width: 260px; height: 260px; right: 26px; top: -148px; box-shadow: 0 0 0 58px rgba(255,255,255,.025);}
.author-hero-content {position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) minmax(230px, 300px);
  align-items: center;
  gap: clamp(22px, 3.6vw, 48px);}
.author-portrait-wrap {position: relative; align-self: center;}
.author-portrait {width: clamp(148px, 15vw, 196px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 5px solid rgba(255,255,255,.90);
  border-radius: 32px;
  background: linear-gradient(145deg, rgba(255,255,255,.23), rgba(255,255,255,.08));
  box-shadow: 0 24px 48px rgba(1,24,21,.30);}
.author-portrait img {width: 100%; height: 100%; object-fit: cover;}
.author-hero-initials {font-size: clamp(42px, 6vw, 70px); font-weight: 850; letter-spacing: -.06em;}
.author-portrait-badge {position: absolute;
  right: -10px;
  bottom: -10px;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  color: #075f57;
  background: #fff;
  border: 5px solid #0d6259;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);}
.author-hero-copy {min-width: 0;}
.author-eyebrow,
.author-section-kicker {font-size: 11px;
  font-weight: 850;
  letter-spacing: .12em;
  text-transform: uppercase;}
.author-eyebrow {margin-bottom: 10px; color: #aee9de;}
.author-hero-copy h1 {margin: 0; font-size: clamp(36px, 5vw, 66px); line-height: .98; letter-spacing: -.055em;}
.author-headline {max-width: 720px; margin: 14px 0 0; color: rgba(244,255,252,.78); font-size: clamp(16px, 2vw, 20px); line-height: 1.55;}
.author-expertise {display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px;}
.author-expertise span {padding: 7px 10px;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 999px;
  color: #eafff9;
  background: rgba(255,255,255,.08);
  font-size: 12px;
  font-weight: 700;
  backdrop-filter: blur(10px);}
.author-hero-actions {display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 22px;}
.author-social-link {min-height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 12px;
  color: #f7fffd;
  text-decoration: none;
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 700;
  transition: transform .16s ease, background .16s ease, border-color .16s ease;}
.author-social-link:hover {transform: translateY(-1px); background: rgba(255,255,255,.15); border-color: rgba(255,255,255,.30);}
.author-stat-panel {display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  background: rgba(255,255,255,.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(16px);}
.author-stat {min-width: 0; padding: 18px 15px; background: rgba(6,45,40,.25);}
.author-stat strong {display: block; color: #fff; font-size: clamp(22px, 3vw, 30px); line-height: 1; letter-spacing: -.035em;}
.author-stat span {display: block; margin-top: 7px; color: rgba(241,255,251,.66); font-size: 11px; font-weight: 650;}
.author-profile-layout {display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.7fr); align-items: start; gap: 24px;}
.author-about-card,
.author-courses-section {background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-xl);
  box-shadow: var(--ds-shadow-sm);}
.author-about-card {position: sticky; top: calc(var(--ds-topbar-height) + 22px); padding: 26px;}
.author-section-kicker {color: var(--ds-accent);}
.author-about-card h2,
.author-courses-heading h2 {margin: 7px 0 0; font-size: clamp(23px, 2.4vw, 30px); letter-spacing: -.035em;}
.author-bio {margin-top: 20px; color: var(--ds-text-secondary); font-size: 15px; line-height: 1.75;}
.author-bio p {margin: 0 0 16px;}
.author-bio p:last-child {margin-bottom: 0;}
.author-courses-section {padding: 26px;}
.author-courses-heading {display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; padding-bottom: 22px; border-bottom: 1px solid var(--ds-border);}
.author-course-count {flex: 0 0 auto; padding: 7px 10px; color: var(--ds-accent); background: var(--ds-accent-soft); border: 1px solid #b8eae0; border-radius: 999px; font-size: 12px; font-weight: 800;}
.author-course-group {padding-top: 24px;}
.author-course-group + .author-course-group {margin-top: 4px; border-top: 1px solid var(--ds-border);}
.author-course-group-head {display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 15px;}
.author-course-group-head h3 {margin: 0; font-size: 18px; letter-spacing: -.02em;}
.author-course-group-head span {min-width: 30px; height: 30px; display: grid; place-items: center; color: var(--ds-text-secondary); background: var(--ds-surface-subtle); border: 1px solid var(--ds-border); border-radius: 10px; font-size: 12px; font-weight: 800;}
.author-course-grid {grid-template-columns: repeat(2, minmax(0, 1fr));}
.author-empty-courses {margin-top: 22px;}
.course-author-chip {width: min(560px, 100%);
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  margin-top: 16px;
  padding: 10px 12px;
  color: var(--ds-text);
  text-decoration: none;
  background: linear-gradient(135deg, #f4fbf8 0%, #eff8f5 100%);
  border: 1px solid #cce7df;
  border-radius: 15px;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;}
a.course-author-chip:hover {transform: translateY(-1px); border-color: #8fd2c5; box-shadow: 0 9px 24px rgba(10,96,83,.10);}
.course-author-chip-avatar {width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--ds-accent);
  background: #fff;
  border: 1px solid #cce7df;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 850;}
.course-author-chip-avatar img {width: 100%; height: 100%; object-fit: cover;}
.course-author-chip-copy {min-width: 0; display: grid; gap: 1px;}
.course-author-chip-copy small {color: var(--ds-text-muted); font-size: 10px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;}
.course-author-chip-copy strong {overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px;}
.course-author-chip-copy > span {overflow: hidden; color: var(--ds-text-secondary); font-size: 12px; text-overflow: ellipsis; white-space: nowrap;}
.course-author-chip-arrow {display: grid; place-items: center; color: var(--ds-accent);}
.course-author-chip-static {grid-template-columns: 42px minmax(0, 1fr); border-color: var(--ds-border); background: var(--ds-surface-subtle);}
.author-admin-intro {margin-bottom: 18px;
  padding: 13px 15px;
  color: var(--ds-text-secondary);
  background: var(--ds-accent-soft);
  border: 1px solid #b8eae0;
  border-radius: var(--ds-radius-md);
  font-size: 13px;
  line-height: 1.55;}
.author-admin-intro > div {display: flex; align-items: flex-start; gap: 9px;}
.admin-author-grid {display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px;}
.admin-author-card {min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 17px;
  padding: 19px;
  background: var(--ds-surface);
  border: 1px solid var(--ds-border);
  border-radius: var(--ds-radius-lg);
  box-shadow: var(--ds-shadow-sm);}
.admin-author-card.is-inactive {background: var(--ds-surface-subtle);}
.admin-author-card-top {display: grid; grid-template-columns: 68px minmax(0, 1fr); align-items: center; gap: 14px;}
.admin-author-avatar,
.author-editor-photo {overflow: hidden;
  background: linear-gradient(145deg, #e4f7f2, #f5faf8);
  border: 1px solid #cce7df;}
.admin-author-avatar {width: 68px; height: 68px; border-radius: 18px;}
.admin-author-avatar img,
.author-editor-photo img {width: 100%; height: 100%; object-fit: cover;}
.author-admin-initials {width: 100%; height: 100%; display: grid; place-items: center; color: var(--ds-accent); font-size: 22px; font-weight: 850;}
.admin-author-main {min-width: 0;}
.admin-author-main h3 {margin: 0; font-size: 17px; letter-spacing: -.02em;}
.admin-author-main p {margin: 6px 0 0; color: var(--ds-text-secondary); font-size: 13px; line-height: 1.45;}
.admin-author-tags {display: flex; flex-wrap: wrap; gap: 6px;}
.admin-author-tags span {padding: 5px 8px; color: var(--ds-accent); background: var(--ds-accent-soft); border-radius: 999px; font-size: 11px; font-weight: 750;}
.admin-author-meta {display: flex; flex-wrap: wrap; gap: 8px 14px; color: var(--ds-text-secondary); font-size: 12px;}
.admin-author-meta > span {display: inline-flex; align-items: center; gap: 5px;}
.admin-author-meta .ui-icon {width: 15px; height: 15px;}
.mono {font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;}
.admin-author-actions {display: flex; align-items: center; gap: 7px; margin-top: auto; padding-top: 2px;}
.admin-author-actions .btn {min-width: 0; flex: 1 1 auto; padding-inline: 10px;}
.author-editor-modal {width: min(980px, 100%);}
.author-editor-grid {display: grid; grid-template-columns: 210px minmax(0, 1fr); gap: 28px;}
.author-editor-photo-column {display: flex; flex-direction: column; gap: 10px;}
.author-editor-photo {width: 180px; aspect-ratio: 1; align-self: center; border-radius: 28px; box-shadow: var(--ds-shadow-sm);}
.author-editor-fields {min-width: 0;}
.author-bio-editor {min-height: 170px; resize: vertical;}
.author-id-input {display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: stretch;}
.author-id-input > span {display: flex; align-items: center; padding: 0 10px; color: var(--ds-text-secondary); background: var(--ds-surface-subtle); border: 1px solid var(--ds-border); border-right: 0; border-radius: var(--ds-radius-md) 0 0 var(--ds-radius-md); font-size: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;}
.author-link-editor {display: grid; gap: 9px;}
.author-link-editor-row {display: grid; grid-template-columns: minmax(120px, .72fr) minmax(200px, 1.3fr) 42px; gap: 8px; align-items: center;}
.check-row {display: flex; align-items: flex-start; gap: 10px; padding: 12px 13px; background: var(--ds-surface-subtle); border: 1px solid var(--ds-border); border-radius: var(--ds-radius-md); cursor: pointer;}
.check-row input {width: 18px; height: 18px; margin-top: 1px; accent-color: var(--ds-accent);}
.check-row > span {display: grid; gap: 3px;}
.check-row small {line-height: 1.4;}
@media (max-width: 1180px) {
.author-hero-content {grid-template-columns: auto minmax(0, 1fr);}
.author-stat-panel {grid-column: 1 / -1; grid-template-columns: repeat(4, minmax(0, 1fr));}
.admin-author-grid {grid-template-columns: repeat(2, minmax(0, 1fr));}
}
@media (max-width: 900px) {
.author-profile-layout {grid-template-columns: 1fr;}
.author-about-card {position: static;}
.author-course-grid {grid-template-columns: 1fr;}
.author-editor-grid {grid-template-columns: 1fr;}
.author-editor-photo-column {display: grid; grid-template-columns: 150px minmax(0, 1fr); align-items: start;}
.author-editor-photo {width: 150px; grid-row: 1 / span 3;}
}
@media (max-width: 700px) {
.author-profile-hero {margin-inline: -10px; padding: 28px 20px 22px; border-radius: 22px;}
.author-hero-content {grid-template-columns: 1fr; justify-items: start; gap: 20px;}
.author-portrait {width: 126px; border-radius: 24px;}
.author-portrait-badge {width: 42px; height: 42px; right: -8px; bottom: -8px; border-radius: 14px;}
.author-hero-copy h1 {font-size: clamp(34px, 12vw, 50px);}
.author-headline {font-size: 16px;}
.author-stat-panel {width: 100%; grid-column: auto; grid-template-columns: repeat(2, minmax(0, 1fr));}
.author-stat {padding: 15px 13px;}
.author-profile-layout {gap: 16px;}
.author-about-card,
.author-courses-section {padding: 20px; border-radius: 18px;}
.author-courses-heading {align-items: flex-start;}
.course-author-chip {width: 100%; grid-template-columns: 40px minmax(0, 1fr) auto;}
.course-author-chip-copy > span {white-space: normal;}
.admin-author-grid {grid-template-columns: 1fr;}
.admin-author-actions {flex-wrap: wrap;}
.author-editor-photo-column {display: flex;}
.author-editor-photo {width: 140px;}
.author-link-editor-row {grid-template-columns: 1fr 42px;}
.author-link-editor-row [data-author-link-url] {grid-column: 1 / 2;}
.author-link-editor-row [data-remove-author-link] {grid-column: 2; grid-row: 1 / span 2; align-self: stretch; height: auto;}
}
@media (max-width: 440px) {
.author-courses-heading {flex-direction: column; gap: 10px;}
.author-hero-actions {width: 100%;}
.author-social-link {flex: 1 1 calc(50% - 5px); justify-content: center;}
.course-author-chip {grid-template-columns: 38px minmax(0, 1fr);}
.course-author-chip-arrow {display: none;}
}
.course-admin-filters {align-items: flex-end;}
.course-admin-search {flex: 1 1 280px;}
.course-admin-section-filter {width: min(240px, 100%);}
.course-admin-date-filter {display: grid; gap: 5px; color: var(--ds-text-secondary); font-size: 12px; font-weight: 700;}
.course-list-groups,
.course-picker-groups {display: grid; gap: 12px;}
.course-list-group,
.course-picker-group {border: 1px solid var(--ds-border); border-radius: 16px; background: var(--ds-surface); overflow: clip;}
.course-list-group > summary,
.course-picker-group > summary {display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 16px; cursor: pointer; color: var(--ds-text); background: var(--ds-surface-subtle); font-weight: 800; list-style: none;}
.course-list-group > summary::-webkit-details-marker,
.course-picker-group > summary::-webkit-details-marker {display: none;}
.course-picker {display: grid; gap: 12px;}
.course-picker-toolbar {display: flex; align-items: center; gap: 12px;}
.course-picker-results {min-height: 0;}
.course-picker-group > summary > span:last-child {min-width: 28px; height: 28px; display: grid; place-items: center; border: 1px solid var(--ds-border); border-radius: 9px; color: var(--ds-text-secondary); background: var(--ds-surface); font-size: 12px;}
.course-picker-group .access-list {gap: 0; padding: 6px;}
.course-picker-note {margin-top: 14px;}
@media (max-width: 760px) {
.course-admin-filters,
.course-picker-toolbar {align-items: stretch; flex-direction: column;}
.course-admin-section-filter,
.course-admin-date-filter {width: 100%;}
}
.content {padding: 30px; max-width: 1440px; margin: 0 auto;}
.course-topline {display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;}
.course-shell {display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 20px;}
.course-nav {background: var(--ds-surface); border: 1px solid var(--ds-border); border-radius: 18px; padding: 16px; height: fit-content; position: sticky; top: calc(var(--ds-topbar-height) + 20px);}
.course-nav h3 {margin: 4px 8px 14px; font-size: 14px;}
.module-label {font-size: 11px; text-transform: uppercase; letter-spacing: .05em; font-weight: 800; color: var(--ds-text-muted); margin: 18px 8px 7px;}
.lesson-link {width: 100%; border: 0; background: transparent; border-radius: 10px; padding: 10px 9px; text-align: left; color: #536078;}
.lesson-link:hover,
.lesson-link.active {background: var(--ds-accent-soft); color: var(--ds-accent);}
.lesson-title {font-size: 13px; font-weight: 700;}
.course-reader {min-width: 0;}
.reader-head {background: linear-gradient(135deg, #17233d, #3153a7); color: white; border-radius: 22px; padding: 28px; margin-bottom: 18px;}
.reader-head .eyebrow {color: #b8c8f2; font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em;}
.reader-head h1 {margin: 8px 0 10px; font-size: 30px; letter-spacing: -.035em;}
.reader-head p {margin: 0; color: rgba(255,255,255,.72);}
.lesson-card {background: white; border: 1px solid var(--ds-border); border-radius: 20px; padding: 28px;}
.lesson-card h2 {margin: 0 0 22px; font-size: 25px; letter-spacing: -.025em;}
.content-block {margin: 18px 0; line-height: 1.7;}
.content-block h1,
.content-block h2,
.content-block h3,
.content-block h4 {line-height: 1.2; margin: 28px 0 12px;}
.callout {border-left: 4px solid var(--ds-accent); background: var(--ds-accent-soft); padding: 15px 17px; border-radius: 0 12px 12px 0;}
.callout.warning {border-color: var(--ds-warning); background: var(--ds-warning-soft);}
.callout.success {border-color: var(--ds-success); background: var(--ds-success-soft);}
.callout-title {font-weight: 850; margin-bottom: 5px;}
.content-image {margin: 22px 0; text-align: center;}
.content-image img {max-width: 100%; border-radius: 14px; border: 1px solid var(--ds-border);}
.content-image figcaption {margin-top: 8px; color: var(--ds-text-muted); font-size: 12px;}
.code-block {background: #101827; color: #dce5f5; padding: 18px; border-radius: 14px; overflow-x: auto; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; white-space: pre;}
.practice {border: 1px solid #cfe2ff; background: #f7faff; padding: 20px; border-radius: 16px;}
.practice h3 {margin-top: 0;}
.quiz {border: 1px solid #dfe4ef; padding: 20px; border-radius: 16px; background: #fbfcfe;}
.question {border-top: 1px solid var(--ds-border); padding-top: 18px; margin-top: 18px;}
.question:first-of-type {border-top: 0; padding-top: 0;}
.option {display: flex; align-items: flex-start; gap: 9px; padding: 9px 10px; border: 1px solid var(--ds-border); border-radius: 10px; margin: 7px 0; background: white;}
.quiz-result {padding: 14px; border-radius: 12px; margin-top: 14px; font-weight: 750;}
.quiz-result.pass {background: var(--ds-success-soft); color: var(--ds-success);}
.quiz-result.fail {background: var(--ds-danger-soft); color: var(--ds-danger);}
.block-actions {display: flex; justify-content: flex-end; margin-top: 14px;}
@media (max-width: 860px) {
.content {padding: 20px 16px;}
.course-shell {grid-template-columns: 1fr;}
.course-nav {position: static;}
}
@media (max-width: 620px) {
.content {padding-top: 18px;}
.lesson-card {padding: 19px;}
.reader-head {padding: 22px;}
}
.spinner {width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(56,103,242,.25); border-top-color: var(--ds-accent); animation: spin .75s linear infinite;}
.course-window {min-height: 100vh; background: var(--ds-bg);}
.course-window-topbar {height: 68px; position: sticky; top: 0; z-index: 30; display: flex; align-items: center; gap: 16px; padding: 0 28px; background: rgba(255,255,255,.94); backdrop-filter: blur(16px); border-bottom: 1px solid var(--ds-border);}
.course-window-topbar .brand-mark {color: var(--ds-text); font-size: 19px;}
.course-window-topbar .brand-logo {width: 34px; height: 34px; border-radius: 10px;}
.standalone-course-content {width: min(1600px, 100%); margin: 0 auto; padding: 24px 28px 40px;}
.standalone-course-content .course-nav {top: 92px;}
@media (max-width: 860px) {
.course-window-topbar {padding: 0 16px;}
.course-window-topbar .user-meta {display: none;}
.standalone-course-content {padding: 16px;}
}
.course-module {border-top:1px solid var(--ds-border); padding-top:8px; margin-top:8px;}
.course-module summary {cursor:pointer; list-style:none; display:flex; align-items:center; justify-content:space-between; gap:10px; padding:9px 8px; color:var(--ds-text); font-size:12px; font-weight:800;}
.course-module summary::-webkit-details-marker {display:none;}
.course-module-chevron {width:16px; height:16px; display:grid; place-items:center; color:var(--ds-text-muted); transform:rotate(0deg); transition:transform .16s ease; flex:0 0 auto;}
.course-module-chevron .ui-icon {width:13px; height:13px;}
.course-module[open] .course-module-chevron {transform:rotate(90deg);}
.course-module summary > span:nth-of-type(2) {flex:1;}
.module-lessons {padding-bottom:5px;}
.lesson-link {display:grid; grid-template-columns:22px minmax(0,1fr); align-items:start; gap:5px;}
.lesson-link:disabled {opacity:.52; cursor:not-allowed;}
.lesson-link.completed {color:#3a6957;}
.lesson-state {text-align:center; font-size:12px; line-height:1.5; font-weight:800;}
.compact-reader-head h1 {margin-bottom:8px;}
.lesson-footer-nav {margin-top:18px; background:var(--ds-surface); border:1px solid var(--ds-border); border-radius:16px; padding:16px; display:flex; justify-content:space-between; align-items:center; gap:16px;}
.lesson-complete-side {display:flex; align-items:center; gap:12px; justify-content:flex-end;}
.success-text {color:#2c7659; font-weight:700;}
.course-complete-banner {margin-bottom:20px; display:flex; align-items:center; justify-content:space-between; gap:20px; padding:22px 24px; border:1px solid #bfe3d3; background:#f1fbf6; border-radius:18px;}
.course-complete-banner h2 {margin:5px 0 6px;}
.course-complete-banner p {margin:0; color:var(--ds-text-muted);}
.quiz-feedback {margin-top:12px; display:grid; gap:8px;}
.quiz-feedback-item {border:1px solid var(--ds-border); border-radius:12px; padding:12px 14px; background:var(--ds-surface);}
.quiz-feedback-item.correct {border-color:#c9e6d8; background:#f6fcf9;}
.quiz-feedback-item.incorrect {border-color:#f0d0d0; background:#fff8f8;}
.quiz-feedback-title {display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:6px;}
.access-list {display:grid; gap:10px;}
@media (max-width: 760px) {
.continue-learning,
.course-complete-banner,
.lesson-footer-nav {align-items:flex-start; flex-direction:column;}
.lesson-complete-side {width:100%; justify-content:space-between;}
}
.content {width: 100%;
  max-width: 1680px;
  padding-inline: clamp(18px, 2.2vw, 40px);}
.standalone-course-content {width: min(1540px, 100%);
  padding-inline: clamp(16px, 2.4vw, 38px);}
.course-shell {grid-template-columns: clamp(268px, 19vw, 320px) minmax(0, 1040px);
  justify-content: center;
  align-items: start;
  gap: clamp(18px, 2vw, 30px);}
.course-reader {width: 100%; max-width: 1040px;}
.reader-head {padding: clamp(22px, 2.3vw, 34px);}
.reader-head h1 {font-size: clamp(26px, 2.15vw, 34px);}
.lesson-card {padding: clamp(20px, 2.25vw, 34px);}
.lesson-card h2 {font-size: clamp(22px, 1.8vw, 28px);}
.content-block {font-size: clamp(15px, .15vw + 14.5px, 17px);}
.content-image {margin: clamp(20px, 2.2vw, 30px) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  --adaptive-image-max-height: clamp(300px, 62svh, 680px);}
.content-image img {display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: min(var(--image-max-height, 10000px), var(--adaptive-image-max-height));
  object-fit: contain;
  object-position: center;
  border-radius: 16px;
  border: 1px solid var(--ds-border);
  box-shadow: 0 10px 30px rgba(22, 32, 51, .08);}
.content-image figcaption {width: min(760px, 100%);
  margin-top: 10px;
  line-height: 1.45;}
.content-block video {display: block;
  width: 100%;
  max-height: min(68svh, 720px);
  object-fit: contain;
  background: #0d1320;}
.code-snippet {margin: clamp(24px, 3vw, 38px) 0;
  max-width: 100%;}
.code-snippet-stage {position: relative;
  overflow: hidden;
  padding: clamp(16px, 2.7vw, 34px);
  border-radius: 22px;
  background:
    radial-gradient(circle at 12% 12%, rgba(255,255,255,.22), transparent 26%),
    radial-gradient(circle at 88% 80%, rgba(119,92,246,.24), transparent 28%),
    linear-gradient(135deg, #7357ef 0%, #536df0 43%, #3778d9 100%);
  box-shadow: 0 20px 48px rgba(48, 67, 136, .18);}
.code-snippet-stage::before,
.code-snippet-stage::after {content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(2px);
  pointer-events: none;}
.code-snippet-stage::before {width: 150px;
  height: 150px;
  left: -55px;
  bottom: -70px;
  background: rgba(255,255,255,.10);}
.code-snippet-stage::after {width: 180px;
  height: 180px;
  right: -75px;
  top: -85px;
  border: 1px solid rgba(255,255,255,.20);}
.code-window {position: relative;
  z-index: 1;
  overflow: hidden;
  min-width: 0;
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 16px;
  background: #111827;
  box-shadow: 0 22px 48px rgba(8, 14, 30, .34);}
.code-window-bar {min-height: 46px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  padding: 0 14px;
  background: rgba(27, 36, 54, .96);
  border-bottom: 1px solid rgba(255,255,255,.07);}
.code-window-controls {display: flex; align-items: center; gap: 7px;}
.code-window-controls span {width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12);}
.code-window-controls span:nth-child(1) {background: #ff5f57;}
.code-window-controls span:nth-child(2) {background: #febc2e;}
.code-window-controls span:nth-child(3) {background: #28c840;}
.code-window-language {min-width: 0;
  color: #aebbd0;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .055em;
  text-transform: uppercase;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;}
.code-copy {justify-self: end;
  border: 1px solid rgba(255,255,255,.09);
  background: rgba(255,255,255,.055);
  color: #cbd5e1;
  border-radius: 9px;
  min-height: 30px;
  padding: 5px 9px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 750;
  transition: background .15s ease, color .15s ease, border-color .15s ease;}
.code-copy:hover {background: rgba(255,255,255,.10); color: white;}
.code-copy.copied {color: #86efac; border-color: rgba(134,239,172,.28);}
.code-copy-icon {font-size: 13px; line-height: 1;}
.code-editor {display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  min-width: 0;
  background: #111827;}
.code-line-numbers {user-select: none;
  min-width: 46px;
  padding: 20px 12px 20px 10px;
  color: #526077;
  background: rgba(7, 12, 23, .22);
  border-right: 1px solid rgba(255,255,255,.055);
  text-align: right;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.7;}
.code-line-numbers span {display: block; height: 1.7em;}
.code-snippet-pre {min-width: 0;
  margin: 0;
  padding: 20px clamp(18px, 2vw, 28px);
  overflow: auto;
  color: #e5e7eb;
  background: transparent;
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: clamp(12.5px, .18vw + 12px, 14px);
  line-height: 1.7;
  tab-size: 4;
  white-space: pre;
  scrollbar-color: #475569 #111827;}
.code-snippet-pre code {font: inherit; color: inherit;}
.code-caption {margin: 9px 4px 0;
  color: var(--ds-text-muted);
  font-size: 12px;
  line-height: 1.45;
  text-align: center;}
.token-comment {color: #6f7f98; font-style: italic;}
.token-string {color: #a6e3a1;}
.token-property {color: #89b4fa;}
.token-keyword {color: #cba6f7; font-weight: 650;}
.token-number {color: #fab387;}
.token-literal {color: #f38ba8; font-weight: 650;}
@media (min-width: 1560px) {
.content {max-width: 1760px;}
.standalone-course-content {width: min(1640px, 100%);}
.course-shell {grid-template-columns: 320px minmax(0, 1080px); gap: 34px;}
.course-reader {max-width: 1080px;}
.content-image {--adaptive-image-max-height: min(64svh, 720px);}
}
@media (max-width: 1180px) {
.content {padding-inline: 22px;}
.course-shell {grid-template-columns: 260px minmax(0, 1fr); gap: 18px;}
.course-reader {max-width: none;}
.course-nav {padding: 14px;}
}
@media (max-width: 1024px) {
.course-shell {grid-template-columns: minmax(0, 1fr);}
.course-nav {position: static;
    width: 100%;
    max-height: none;}
.standalone-course-content .course-nav {top: auto;}
.content-image {--adaptive-image-max-height: min(56svh, 560px);}
.code-snippet-stage {border-radius: 18px;}
}
@media (max-width: 760px) {
.content {padding: 16px 14px 28px;}
.standalone-course-content {padding: 14px 12px 30px;}
.course-window-topbar {min-height: 62px; height: auto; padding: 10px 12px;}
.course-window-topbar .brand-mark {font-size: 16px;}
.course-window-topbar .brand-logo {width: 32px; height: 32px;}
.reader-head,
.lesson-card {border-radius: 16px;}
.reader-head {padding: 20px 18px;}
.reader-head h1 {font-size: 24px;}
.lesson-card {padding: 18px 16px;}
.lesson-card h2 {font-size: 22px; margin-bottom: 18px;}
.content-block {line-height: 1.65;}
.content-image {--adaptive-image-max-height: min(50svh, 430px);}
.content-image img {border-radius: 12px;}
.code-snippet {margin: 22px -2px;}
.code-snippet-stage {padding: 10px; border-radius: 15px;}
.code-window {border-radius: 12px;}
.code-window-bar {min-height: 42px; padding: 0 10px;}
.code-line-numbers {min-width: 38px; padding: 16px 9px 16px 6px; font-size: 12px;}
.code-snippet-pre {padding: 16px 14px; font-size: 12.5px;}
.code-copy {padding: 5px 7px;}
.code-copy-label {display: none;}
}
@media (max-width: 520px) {
.course-topline {flex-direction: column;}
.lesson-footer-nav .btn,
.lesson-complete-side,
.lesson-complete-side .btn {width: 100%;}
.lesson-complete-side {display: grid;}
.content-image {--adaptive-image-max-height: min(46svh, 380px);}
.code-window-language {text-align: left;}
.code-window-controls {display: none;}
.code-window-bar {grid-template-columns: minmax(0,1fr) auto;}
.code-line-numbers {display: none;}
.code-editor {grid-template-columns: minmax(0, 1fr);}
.code-snippet-pre {line-height: 1.65;}
}
@media (max-width: 380px) {
.content {padding-inline: 10px;}
.standalone-course-content {padding-inline: 8px;}
.lesson-card {padding: 16px 13px;}
.content-image {--adaptive-image-max-height: 42svh;}
.code-snippet-stage {padding: 7px;}
}
.markdown-content > :first-child {margin-top: 0;}
.markdown-content > :last-child {margin-bottom: 0;}
.markdown-content p {margin: 0 0 14px;}
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {margin: 26px 0 12px; line-height: 1.25;}
.markdown-lead {font-size: clamp(17px, .25vw + 16px, 20px); line-height: 1.75; color: #334155;}
.markdown-compact p {margin-bottom: 8px;}
.text-lead {font-size: clamp(17px, .25vw + 16px, 20px); color: #334155;}
.text-small {font-size: 13px;}
.text-muted {color: var(--ds-text-muted);}
.inline-code {display: inline;
  padding: .16em .42em .18em;
  border: 1px solid #cdd8ff;
  border-radius: 7px;
  background: linear-gradient(180deg, #f4f6ff 0%, #edf1ff 100%);
  color: #4054b8;
  box-shadow: inset 0 -1px 0 rgba(64, 84, 184, .08), 0 1px 2px rgba(30, 41, 59, .05);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: .9em;
  font-weight: 650;
  line-height: 1.35;
  letter-spacing: -.01em;
  overflow-wrap: anywhere;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;}
.question .inline-code,
.option .inline-code {background: linear-gradient(180deg, #eef2ff 0%, #e8edff 100%);
  border-color: #c4cffd;
  color: #3448a5;}
mark {padding: .05em .18em;
  border-radius: 4px;
  background: #fff0a6;
  color: inherit;}
.markdown-content a,
.content-block > a {color: var(--ds-accent); text-decoration-thickness: 1.5px; text-underline-offset: 3px;}
.markdown-content a:hover,
.content-block > a:hover {text-decoration-thickness: 2px;}
.markdown-list,
.structured-list > ul,
.structured-list > ol {margin: 12px 0 18px; padding-left: 1.55rem;}
.markdown-list li,
.structured-list > ul > li,
.structured-list > ol > li {margin: 7px 0; padding-left: .2rem;}
.structured-list h4 {margin: 0 0 10px;}
.structured-list.checklist > ul,
ul.markdown-checklist {list-style: none; padding-left: 0;}
.structured-list.checklist > ul > li,
ul.markdown-checklist > li {display: flex; align-items: flex-start; gap: 10px; padding-left: 0;}
.check-marker {flex: 0 0 20px;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid #b6c2d2;
  border-radius: 6px;
  background: white;
  color: white;
  font-size: 12px;
  font-weight: 900;}
.check-marker.checked {border-color: var(--ds-success); background: var(--ds-success);}
.nested-list {margin: 8px 0 2px; padding-left: 1.3rem;}
.nested-list li {margin: 5px 0;}
.markdown-quote,
.content-quote blockquote {margin: 18px 0;
  padding: 16px 20px;
  border-left: 4px solid #8195ff;
  border-radius: 0 14px 14px 0;
  background: #f6f7ff;
  color: #344054;
  font-size: clamp(16px, .2vw + 15px, 18px);
  line-height: 1.7;}
.content-quote {margin: 24px 0;}
.content-quote blockquote {margin-bottom: 8px;}
.content-quote blockquote p {margin: 0 0 10px;}
.content-quote blockquote p:last-child {margin-bottom: 0;}
.content-quote figcaption {padding-left: 24px; color: var(--ds-text-muted); font-size: 13px;}
.divider-wrap {position: relative; margin: 30px 0; text-align: center;}
.divider-wrap > span {position: relative;
  z-index: 1;
  display: inline-block;
  padding: 0 12px;
  background: var(--surface, #fff);
  color: var(--ds-text-muted);
  font-size: 12px;
  font-weight: 750;}
.content-divider {margin: 0; border: 0; border-top: 1px solid var(--ds-border);}
.divider-wrap > span + .content-divider {position: absolute; top: 50%; left: 0; right: 0;}
.content-divider.dashed {border-top-style: dashed;}
.content-divider.dots {border-top: 0; height: 8px; background: radial-gradient(circle, #a8b4c4 1.5px, transparent 1.6px) center / 12px 8px repeat-x;}
.content-divider.space {visibility: hidden; height: 18px;}
.callout.tip {border-color: #06a77d; background: #ecfdf7;}
.callout.danger {border-color: #e24a4a; background: #fff1f1;}
.callout.note {border-color: #8b78d7; background: #f7f4ff;}
.callout.example {border-color: #6d82e8; background: #f2f5ff;}
.callout .markdown-content p {margin-bottom: 9px;}
.callout .markdown-content p:last-child {margin-bottom: 0;}
.formatted-table {margin: 24px 0; border: 1px solid var(--ds-border); border-radius: 14px; overflow-x: auto;}
.formatted-table table {margin: 0; width: 100%; border-collapse: collapse;}
.formatted-table th {background: #f6f8fb; font-weight: 800;}
.formatted-table th,
.formatted-table td {padding: 13px 15px; vertical-align: top; border-bottom: 1px solid var(--ds-border);}
.formatted-table tbody tr:last-child td {border-bottom: 0;}
.formatted-table.striped tbody tr:nth-child(even) {background: #fafbfd;}
.formatted-table.compact th,
.formatted-table.compact td {padding: 9px 12px;}
.table-caption {padding: 9px 13px; border-top: 1px solid var(--ds-border); color: var(--ds-text-muted); font-size: 12px;}
.image-title {width: min(760px, 100%); margin-bottom: 10px; font-weight: 800; text-align: left;}
.image-credit {width: min(760px, 100%); margin-top: 5px; color: var(--ds-text-muted); font-size: 11px; text-align: center;}
.content-image.align-left {align-items: flex-start;}
.content-image.align-right {align-items: flex-end;}
.content-image.thumbnail img {max-width: min(360px, 100%); max-height: min(var(--image-max-height, 10000px), var(--adaptive-image-max-height), 320px);}
.content-image.full_width img {width: 100%;}
.code-title {margin: 0 4px 10px; font-size: 14px; font-weight: 800; color: #334155;}
.code-editor.without-line-numbers {grid-template-columns: minmax(0, 1fr);}
.code-source-line {display: block; min-height: 1.7em; padding: 0 7px; margin: 0 -7px; border-radius: 3px;}
.code-source-line.is-highlighted {background: rgba(250, 204, 21, .10); box-shadow: inset 3px 0 0 rgba(250, 204, 21, .75);}
.code-line-numbers span.is-highlighted {color: #facc15; background: rgba(250, 204, 21, .08);}
.code-wrap .code-snippet-pre {white-space: pre-wrap; overflow-wrap: anywhere;}
@media (max-width: 760px) {
.markdown-quote,
.content-quote blockquote {padding: 14px 15px;}
.content-quote figcaption {padding-left: 18px;}
.formatted-table {border-radius: 11px;}
.formatted-table table {min-width: 560px;}
.structured-list > ul,
.structured-list > ol,
.markdown-list {padding-left: 1.25rem;}
}
.learning-outcomes {margin-top: 18px;
  padding: 15px 17px;
  border: 1px solid #dce5f1;
  border-radius: 14px;
  background: #f8faff;}
.learning-outcomes > strong {display: block; margin-bottom: 8px; color: #26354d;}
.learning-outcomes ul {margin: 0; padding-left: 1.2rem;}
.learning-outcomes li {margin: 5px 0; color: #475569;}
.practice {border: 1px solid #dce6f3; border-left: 4px solid #6d82e8; border-radius: 14px; padding: 18px; background: #fbfcff;}
.practice h3 {margin-top: 12px;}
.practice-actions,
.practice-answer {display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin-top: 16px;}
.practice-answer {display: grid; align-items: stretch;}
.practice-answer label {font-weight: 750; color: #334155;}
.practice-answer textarea {width: 100%; min-height: 108px; resize: vertical;}
.practice-solution {margin-top: 16px; padding: 15px 17px; border-radius: 12px; border: 1px solid #bde8d8; background: #f0fbf7;}
.practice-solution h4 {margin: 0 0 8px;}
.practice-disclosure {margin-top: 14px; border: 1px solid #dce6f3; border-radius: 12px; background: #fff; overflow: hidden;}
.practice-disclosure > summary {cursor: pointer; padding: 12px 14px; font-weight: 800; color: #334155; list-style-position: inside; touch-action: manipulation;}
.practice-disclosure[open] > summary {border-bottom: 1px solid #e7edf5; background: #f8faff;}
.practice-disclosure-body {padding: 13px 15px;}
.practice-disclosure-body > :first-child {margin-top: 0;}
.practice-disclosure-body > :last-child {margin-bottom: 0;}
.practice-disclosure-body > ul {margin: 0; padding-left: 1.3rem;}
.practice-result {margin-top: 12px; padding: 11px 13px; border-radius: 10px; font-size: 14px; font-weight: 650;}
.practice-result.success {background: #ecfdf5; color: #08795b; border: 1px solid #b7ead8;}
.practice-result.error {background: #fff7ed; color: #9a4a0a; border: 1px solid #fed7aa;}
.download-block {display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  margin: 22px 0;
  padding: 16px;
  border: 1px solid #dbe4f0;
  border-radius: 14px;
  background: #f9fbfe;}
.download-icon {width: 42px; height: 42px; display: grid; place-items: center; border-radius: 12px; background: #edf2ff; color: var(--ds-accent); font-size: 22px; font-weight: 900;}
.download-copy {min-width: 0;}
.download-copy > strong {display: block; color: #26354d;}
.download-copy p {margin: 5px 0; color: #64748b;}
.download-caption {margin-top: 4px;}
.progress-summary-grid {display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 10px; margin-bottom: 18px;}
.progress-summary-grid > div {padding: 14px; border: 1px solid var(--ds-border); border-radius: 12px; background: #f8fafc;}
.progress-summary-grid span {display: block; color: var(--ds-text-muted); font-size: 12px;}
.progress-summary-grid strong {display: block; margin-top: 4px; font-size: 22px;}
.admin-progress-cell {display: grid; grid-template-columns: minmax(90px,1fr) auto; align-items: center; gap: 9px; min-width: 160px;}
.course-mobile-toc {display: none; width: 100%; border: 1px solid #dbe4f0; background: #fff; color: #334155; border-radius: 12px; min-height: 46px; padding: 0 14px; align-items: center; justify-content: space-between; font: inherit; cursor: pointer; margin-bottom: 10px;}
.course-drawer-backdrop {display: none;}
body.drawer-open {overflow: hidden;}
@media (max-width: 760px) {
.course-nav {display: none;}
.course-mobile-toc {display: flex;}
.course-drawer-backdrop {position: fixed; inset: 0; z-index: 1000; background: rgba(15,23,42,.42); opacity: 0; pointer-events: none; display: block; transition: opacity .18s ease;}
.course-drawer-backdrop.open {opacity: 1; pointer-events: auto;}
.course-drawer {position: absolute; top: 0; left: 0; bottom: 0; width: min(88vw, 360px); overflow-y: auto; padding: 18px 14px 24px; background: #fff; box-shadow: 18px 0 50px rgba(15,23,42,.18); transform: translateX(-102%); transition: transform .2s ease;}
.course-drawer-backdrop.open .course-drawer {transform: translateX(0);}
.course-drawer-head {display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px;}
.course-drawer .course-module {margin-bottom: 8px;}
.download-block {grid-template-columns: auto minmax(0,1fr);}
.download-block .btn {grid-column: 1 / -1; width: 100%;}
.progress-summary-grid {grid-template-columns: repeat(2, minmax(0,1fr));}
}
@media (max-width: 480px) {
.progress-summary-grid {grid-template-columns: 1fr 1fr;}
.practice {padding: 15px 13px;}
.practice-actions {display: grid; grid-template-columns: 1fr; align-items: stretch;}
.practice-actions .btn {width: 100%; min-height: 46px;}
.practice-solution {scroll-margin-top: 82px;}
.practice-disclosure > summary {min-height: 46px; display: flex; align-items: center;}
.learning-outcomes {padding: 13px 14px;}
}
.certificate-toolbar {display: flex; justify-content: flex-end; margin-bottom: 16px;}
.certificate-toolbar .input {width: min(460px, 100%);}
.certificate-grid {display: grid; gap: 16px;}
.certificate-card {display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 22px;
  border: 1px solid #dce4f0;
  border-radius: 18px;
  background:
    radial-gradient(circle at 95% 0%, rgba(92,111,226,.12), transparent 25%),
    #fff;
  box-shadow: 0 10px 28px rgba(32,48,76,.06);}
.certificate-card-mark {width: 54px;
  height: 54px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 26px;
  font-weight: 900;
  background: linear-gradient(135deg,#4057d6,#7b61df);
  box-shadow: 0 10px 24px rgba(64,87,214,.22);}
.certificate-card-copy {min-width: 0;}
.certificate-card-copy h3 {margin: 5px 0 6px;}
.certificate-link-preview {margin-top: 11px;
  padding: 9px 11px;
  border-radius: 10px;
  background: #f6f8fc;
  border: 1px solid #e4e9f2;
  color: #64748b;
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;}
.certificate-card-actions {display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px;}
.certificate-table-link {display: flex; align-items: center; gap: 8px; min-width: 280px;}
.certificate-table-link a {min-width: 0; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;}
@media (max-width: 820px) {
.certificate-card {grid-template-columns: auto minmax(0, 1fr);}
.certificate-card-actions {grid-column: 1 / -1; justify-content: flex-start;}
}
@media (max-width: 520px) {
.certificate-card {grid-template-columns: 1fr; padding: 18px 15px;}
.certificate-card-mark {width: 48px; height: 48px;}
.certificate-card-actions {grid-column: auto; display: grid; grid-template-columns: 1fr;}
.certificate-card-actions .btn {width: 100%;}
.certificate-table-link {min-width: 220px;}
}
[hidden] {display: none !important;}
.sr-only {position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;}
:where(button, a, input, select, textarea, summary, [tabindex]):focus-visible {outline: 3px solid rgba(56, 103, 242, .32);
  outline-offset: 2px;}
.lesson-card > .text-body,
.lesson-card > .text-lead,
.lesson-card > .text-small,
.lesson-card > .text-muted,
.lesson-card > .markdown-content,
.lesson-card > .structured-list,
.lesson-card > .content-quote,
.lesson-card > .callout {width: min(780px, 100%);
  margin-left: auto;
  margin-right: auto;}
.reader-head > p,
.reader-head > .learning-outcomes {max-width: 780px;}
.image-fallback {width: min(760px, 100%);
  min-height: 150px;
  padding: 24px;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 7px;
  text-align: center;
  border: 1px dashed #bdc8d8;
  border-radius: 14px;
  background: #f8fafc;
  color: #667085;}
.image-fallback strong {color: #344054;}
.image-fallback-path {margin-top: 5px;
  max-width: 100%;
  padding: 6px 8px;
  border-radius: 7px;
  background: #eef2f7;
  color: #667085;
  font: 11px/1.4 "Cascadia Code", Consolas, monospace;
  overflow-wrap: anywhere;}
.question-number {display: flex; align-items: center; gap: 6px; margin-bottom: 4px;}
.question-instruction {margin: 8px 0 10px;
  color: #59657a;
  font-size: 13px;
  font-weight: 700;}
.question-missing {margin-inline: -10px;
  padding-inline: 10px;
  border-radius: 12px;
  background: #fff7f7;
  box-shadow: inset 3px 0 0 #d45454;}
.quiz-validation {display: grid;
  gap: 4px;
  margin: 14px 0;
  padding: 12px 14px;
  border: 1px solid #efc5c5;
  border-radius: 11px;
  background: var(--ds-danger-soft);
  color: #7b3030;}
.quiz-answer-review {display: grid;
  gap: 3px;
  margin-top: 9px;
  padding: 9px 11px;
  border-radius: 9px;
  background: rgba(255,255,255,.66);}
.quiz-answer-review > span,
.quiz-feedback-explanation > span {color: var(--ds-text-muted);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .04em;}
.quiz-answer-review.correct-answer {background: #edf9f3;}
.quiz-feedback-explanation {margin-top: 10px;}
.quiz-feedback-explanation > .content-block {margin-top: 5px;}
.course-actions {display: flex; align-items: center; gap: 8px; justify-content: flex-end;}
.admin-course-table-wrap {overflow: visible;}
.course-complete-actions {justify-content: flex-end;}
@media (max-width: 760px) {
:where(.btn, .btn-icon, .nav-item, .lesson-link, .course-mobile-toc) {min-height: 44px;}
.course-complete-actions {width: 100%; justify-content: stretch;}
.admin-course-table-wrap {overflow-x: auto; overflow-y: visible;}
}
@media (max-width: 520px) {
.quiz-answer-review {padding: 9px;}
}
.student-create-grid {display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .9fr);
  gap: 22px;}
.student-create-section {min-width: 0;
  padding: 18px;
  border: 1px solid var(--ds-border);
  border-radius: 16px;
  background: #fbfcfe;}
.access-list.compact {max-height: 310px; overflow-y: auto; padding-right: 4px;}
@media (max-width: 760px) {
.student-create-grid {grid-template-columns: 1fr;}
.student-create-section {padding: 14px;}
}
.audio-block {margin: 24px 0;
  padding: 18px;
  border: 1px solid #dbe4f0;
  border-radius: 16px;
  background: linear-gradient(180deg, #fbfdff 0%, #f7f9fd 100%);
  box-shadow: 0 8px 24px rgba(32, 48, 76, .05);}
.audio-head {display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 13px;
  align-items: start;
  margin-bottom: 14px;}
.audio-icon {width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: #edf2ff;
  color: var(--ds-accent);
  font-size: 23px;
  font-weight: 900;}
.audio-copy {min-width: 0;}
.audio-copy > strong {display: block; color: #26354d; font-size: 17px;}
.audio-copy p {margin: 5px 0 6px; color: #64748b;}
.audio-player {display: block;
  width: 100%;
  min-height: 44px;
  margin: 0;}
.audio-tools {display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;}
.audio-rate-label {display: grid;
  grid-template-columns: auto minmax(92px, 118px);
  gap: 9px;
  align-items: center;
  color: #64748b;
  font-size: 13px;
  font-weight: 700;}
.audio-rate {min-height: 40px; padding-top: 7px; padding-bottom: 7px;}
.audio-transcript {margin-top: 15px;
  border-top: 1px solid #e2e8f0;
  padding-top: 12px;}
.audio-transcript summary {cursor: pointer;
  color: #334155;
  font-weight: 750;
  user-select: none;}
.audio-transcript .markdown-content {margin-top: 10px;
  padding: 13px 15px;
  border-radius: 12px;
  background: #fff;
  border: 1px solid #e5eaf2;}
.audio-caption {margin-top: 11px; line-height: 1.5;}
@media (max-width: 520px) {
.audio-block {padding: 15px 13px;}
.audio-tools {display: grid; grid-template-columns: 1fr; align-items: stretch;}
.audio-rate-label {grid-template-columns: auto 1fr;}
.audio-tools .btn {width: 100%;}
}
.video-block {margin: 26px 0;
  padding: 18px;
  border: 1px solid #dbe4f0;
  border-radius: 18px;
  background: linear-gradient(180deg, #fbfdff 0%, #f7f9fd 100%);
  box-shadow: 0 10px 28px rgba(32, 48, 76, .06);
  --adaptive-video-max-height: min(68svh, 720px);}
.video-head {display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 13px;
  align-items: start;
  margin-bottom: 14px;}
.video-icon {width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: #edf2ff;
  color: var(--ds-accent);
  font-size: 17px;
  font-weight: 900;}
.video-copy {min-width: 0;}
.video-copy > strong {display: block; color: #26354d; font-size: 17px;}
.video-copy p {margin: 5px 0 6px; color: #64748b;}
.video-frame {width: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 15px;
  background: #0b1220;
  border: 1px solid rgba(15, 23, 42, .16);}
.video-block .video-player {display: block;
  width: 100%;
  height: auto;
  max-height: min(var(--video-max-height, 10000px), var(--adaptive-video-max-height));
  object-fit: contain;
  background: #0b1220;}
.video-tools {display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 12px;}
.video-rate-label {display: grid;
  grid-template-columns: auto minmax(92px, 118px);
  gap: 9px;
  align-items: center;
  color: #64748b;
  font-size: 13px;
  font-weight: 700;}
.video-rate {min-height: 40px; padding-top: 7px; padding-bottom: 7px;}
.video-caption {margin-top: 11px; line-height: 1.5;}
@media (min-width: 1560px) {
.video-block {--adaptive-video-max-height: min(72svh, 780px);}
}
@media (max-width: 1024px) {
.video-block {--adaptive-video-max-height: min(62svh, 620px);}
}
@media (max-width: 760px) {
.video-block {--adaptive-video-max-height: min(56svh, 500px); padding: 15px 13px;}
.video-frame {border-radius: 12px;}
}
@media (max-width: 520px) {
.video-block {--adaptive-video-max-height: min(48svh, 380px);}
.video-tools {display: grid; grid-template-columns: 1fr; align-items: stretch;}
.video-rate-label {grid-template-columns: auto 1fr;}
.video-tools .btn {width: 100%;}
}
.lesson-top-anchor {scroll-margin-top: 130px;}
.lesson-section-nav {position: sticky;
  top: 82px;
  z-index: 18;
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 14px 0;
  padding: 10px 12px;
  background: rgba(255,255,255,.96);
  border: 1px solid var(--ds-border);
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(15,23,42,.05);
  backdrop-filter: blur(10px);}
.lesson-section-nav-label {flex: 0 0 auto; font-size: 12px; font-weight: 750; color: var(--ds-text-muted); text-transform: uppercase; letter-spacing: .05em;}
.lesson-section-nav-links {display: flex; gap: 7px; min-width: 0; overflow-x: auto; scrollbar-width: thin;}
.lesson-section-nav a {flex: 0 0 auto;
  padding: 7px 10px;
  border-radius: 9px;
  color: var(--ds-text-muted);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;}
.lesson-section-nav a:hover,
.lesson-section-nav a.active {background: #eef5f0; color: var(--ds-accent);}
.lesson-section {scroll-margin-top: 150px;
  margin: 0 0 34px;
  padding: 0 0 30px;
  border-bottom: 1px solid var(--ds-border);}
.lesson-section:last-child {border-bottom: 0; padding-bottom: 0; margin-bottom: 0;}
.lesson-section-head {display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin: 0 0 20px;}
.lesson-section-head h2 {margin: 0 0 7px;}
.lesson-section-head p {margin: 0; max-width: 760px; color: var(--ds-text-muted); line-height: 1.6;}
.section-top-link {flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--ds-border);
  border-radius: 10px;
  color: var(--ds-text-muted);
  text-decoration: none;
  background: #fff;}
.section-reference {padding: 22px; border: 1px solid var(--ds-border); border-radius: 16px; background: #fafcfb;}
.section-assessment {padding: 22px; border: 1px solid #ead9ac; border-radius: 16px; background: #fffdf6;}
.section-media {padding: 22px; border: 1px solid #d9e8e0; border-radius: 16px; background: #f8fbf9;}
.lesson-section-content > .text-body,
.lesson-section-content > .text-lead,
.lesson-section-content > .text-small,
.lesson-section-content > .text-muted,
.lesson-section-content > .markdown-content,
.lesson-section-content > .structured-list,
.lesson-section-content > .content-quote,
.lesson-section-content > .callout,
.collapsible-content > .text-body,
.collapsible-content > .text-lead,
.collapsible-content > .text-small,
.collapsible-content > .text-muted,
.collapsible-content > .markdown-content,
.collapsible-content > .structured-list,
.collapsible-content > .content-quote,
.collapsible-content > .callout {width: min(780px, 100%);
  margin-left: auto;
  margin-right: auto;}
.content-collapsible {margin: 18px 0;
  border: 1px solid var(--ds-border);
  border-radius: 14px;
  background: #fbfcfb;
  overflow: clip;}
.content-collapsible > summary {cursor: pointer;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 15px 18px;
  font-weight: 700;
  color: var(--ds-text);}
.content-collapsible > summary::-webkit-details-marker {display: none;}
.collapsible-chevron {margin-left: auto; position: absolute; right: 18px; display: grid; place-items: center; transition: transform .18s ease;}
.collapsible-chevron .ui-icon {width: 16px; height: 16px;}
.content-collapsible[open] > summary .collapsible-chevron {transform: rotate(180deg);}
.content-collapsible > summary small {padding-right: 28px; font-size: 13px; font-weight: 500; color: var(--ds-text-muted);}
.collapsible-content {padding: 4px 18px 18px;}
.collapsible-source,
.collapsible-reference {background: #f8faf9;}
.collapsible-source > summary::before {content: "Aa"; display: inline-grid; place-items: center; width: 28px; height: 22px; margin-right: 8px; border-radius: 7px; background: #e7efe9; color: #315844; font-size: 11px;}
.collapsible-transcript > summary::before {content: "CC"; display: inline-grid; place-items: center; width: 28px; height: 22px; margin-right: 8px; border-radius: 7px; background: #e9eef8; color: #405a89; font-size: 10px;}
.media-group {margin: 24px 0;}
.media-group-head {margin-bottom: 14px;}
.media-group-head h3 {margin: 0 0 5px; font-size: 20px;}
.media-group-head p {margin: 0; color: var(--ds-text-muted); line-height: 1.6;}
.media-group-grid {display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 14px;}
.media-grid-item {min-width: 0;
  border: 1px solid var(--ds-border);
  border-radius: 14px;
  background: #fff;
  overflow: hidden;}
.media-grid-item .content-image {margin: 0; padding: 12px; align-items: stretch;}
.media-grid-item .content-image img {width: 100%; max-width: 100%; max-height: 260px; object-fit: contain;}
.media-image-open {position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: zoom-in;}
.media-image-open img {display: block; margin: 0 auto;}
.media-image-open-label {position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 6px 9px;
  border-radius: 9px;
  background: rgba(15,23,42,.78);
  color: #fff;
  font-size: 12px;
  font-weight: 650;
  opacity: 0;
  transition: opacity .16s ease;}
.media-image-open:hover .media-image-open-label,
.media-image-open:focus-visible .media-image-open-label {opacity: 1;}
.media-grid-player .audio-block,
.media-grid-player .video-block {margin: 0; border: 0; border-radius: 0;}
.media-playlist-layout {display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 320px);
  gap: 16px;
  align-items: start;}
.media-playlist-stage {min-width: 0;}
.media-playlist-stage .audio-block,
.media-playlist-stage .video-block,
.media-playlist-stage .content-image {margin: 0;}
.media-playlist-list {max-height: 540px;
  overflow-y: auto;
  display: grid;
  gap: 7px;
  padding: 7px;
  border: 1px solid var(--ds-border);
  border-radius: 14px;
  background: #f9fbfa;}
.media-playlist-item {width: 100%;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 9px;
  align-items: center;
  padding: 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--ds-text);
  text-align: left;
  cursor: pointer;}
.media-playlist-item:hover {background: #eef4f0;}
.media-playlist-item.active {background: #e2efe7; color: #245a43;}
.media-playlist-index {display: grid; place-items: center; width: 28px; height: 28px; border-radius: 9px; background: #fff; border: 1px solid var(--ds-border); font-size: 12px; font-weight: 750;}
.media-playlist-copy {min-width: 0;}
.media-playlist-copy strong {display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px;}
.media-playlist-copy small {display: block; margin-top: 3px; color: var(--ds-text-muted); font-size: 11px;}
.media-viewer-backdrop {position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
  place-items: center;
  padding: 24px;
  background: rgba(8,18,14,.78);}
.media-viewer-backdrop.open {display: grid;}
body.media-viewer-open {overflow: hidden;}
.media-viewer {width: min(1180px, 96vw);
  max-height: 94vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 28px 90px rgba(0,0,0,.32);
  overflow: hidden;}
.media-viewer-head {min-height: 54px; display: flex; align-items: center; gap: 12px; padding: 10px 14px 10px 18px; border-bottom: 1px solid var(--ds-border);}
.media-viewer-head strong {flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;}
.media-viewer-stage {min-height: 0; overflow: auto; display: grid; place-items: center; padding: 18px; background: #f3f5f4;}
.media-viewer-stage img {max-width: 100%; height: auto; max-height: calc(94vh - 92px); object-fit: contain;}
@media (max-width: 980px) {
.lesson-section-nav {top: 76px;}
.media-playlist-layout {grid-template-columns: 1fr;}
.media-playlist-list {max-height: 280px;}
}
@media (max-width: 720px) {
.lesson-section-nav {position: static; display: block; padding: 10px;}
.lesson-section-nav-label {display: block; margin: 0 2px 7px;}
.lesson-section-head {gap: 8px;}
.section-top-link {display: none;}
.section-reference,
.section-assessment,
.section-media {padding: 15px 12px; margin-left: -2px; margin-right: -2px;}
.media-group-grid {grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px;}
.media-grid-item .content-image {padding: 8px;}
.media-grid-item .content-image img {max-height: 200px;}
.media-viewer-backdrop {padding: 8px;}
.media-viewer {width: 100%; max-height: 96vh; border-radius: 12px;}
}
@media (max-width: 420px) {
.media-group-grid {grid-template-columns: 1fr;}
}
.content-collapsible > summary {position: relative;}
.download-icon .ui-icon,
.video-icon .ui-icon,
.audio-icon .ui-icon {width: 21px; height: 21px;}
.section-top-link {display: grid; place-items: center;}
.section-top-link .ui-icon {width: 16px; height: 16px;}
.quiz-feedback-title span {display: inline-flex; align-items: center; gap: 6px;}
.quiz-feedback-title .ui-icon,
.success-text .ui-icon {width: 14px; height: 14px;}
.media-playlist-arrow {display: grid; place-items: center;}
.media-playlist-arrow .ui-icon {width: 15px; height: 15px;}
.content-external-link {display: inline-flex; align-items: center; gap: 6px;}
.code-copy-icon {display: grid; place-items: center;}
.code-copy-icon .ui-icon {width: 15px; height: 15px;}
.assessment-player {margin-top: 16px;
  border: 1px solid var(--ds-border);
  border-radius: 16px;
  background: var(--ds-surface);
  overflow: hidden;}
.assessment-player-head {display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--ds-border);
  background: color-mix(in srgb, var(--ds-surface) 92%, var(--ds-accent) 8%);}
.assessment-player-status {display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end;}
.assessment-status-line {padding: 8px 16px 0;}
.assessment-timer {min-width: 82px;
  padding: 7px 10px;
  border-radius: 10px;
  background: var(--surface-muted, #f5f7f6);
  border: 1px solid var(--ds-border);
  font-variant-numeric: tabular-nums;
  text-align: center;
  font-weight: 800;}
.assessment-timer.warning {background: #fff8e8; border-color: #ead7a3; color: #765600;}
.assessment-timer.danger {background: #fff0f0; border-color: #efc4c4; color: var(--ds-danger);}
.assessment-save-status {font-size: 12px; color: var(--ds-text-muted); white-space: nowrap;}
.assessment-save-status[data-state="saving"],
.assessment-save-status[data-state="dirty"] {color: #765600;}
.assessment-save-status[data-state="saved"] {color: var(--ds-success);}
.assessment-save-status[data-state="error"] {color: var(--ds-danger); font-weight: 700;}
.assessment-navigator {display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--ds-border);}
.assessment-nav-item {position: relative;
  width: 34px;
  height: 34px;
  border: 1px solid var(--ds-border);
  border-radius: 9px;
  background: var(--ds-surface);
  color: var(--ds-text);
  font-weight: 750;
  cursor: pointer;}
.assessment-nav-item:hover {border-color: var(--ds-accent);}
.assessment-nav-item.answered {background: #edf8f2; border-color: #b9dcc9;}
.assessment-nav-item.flagged::after {content: "";
  position: absolute;
  top: -4px;
  right: -4px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #c98a12;
  border: 2px solid var(--ds-surface);}
.assessment-nav-item.current {outline: 2px solid var(--ds-accent); outline-offset: 1px;}
.assessment-question-stage {padding: 18px 18px 4px;}
.assessment-question-stage > .question {margin: 0;}
.assessment-question-actions {display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 10px;
  align-items: center;
  padding: 14px 18px;
  border-top: 1px solid var(--ds-border);}
.assessment-question-actions [data-assessment-next] {justify-self: end;}
.assessment-flag.active {border-color: #d7a633; background: #fff8e8; color: #765600;}
.assessment-complete-row {padding: 0 18px 18px; display: flex; justify-content: flex-end;}
.assessment-submit-panel {margin: 0 18px 18px;
  padding: 16px;
  border: 1px solid var(--ds-border);
  border-radius: 12px;
  background: var(--surface-muted, #f7f8f7);}
.assessment-submit-panel [data-assessment-submit-summary] {display: grid; gap: 4px;}
.assessment-submit-warning {margin-top: 6px; color: var(--ds-danger); font-weight: 700;}
.assessment-submit-actions {display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; margin-top: 14px;}
.assessment-result-screen {margin-top: 16px;}
.assessment-result-stats {display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;}
.assessment-result-stats > div {padding: 13px;
  border: 1px solid var(--ds-border);
  border-radius: 12px;
  background: var(--ds-surface);
  text-align: center;}
.assessment-result-stats strong {display: block; font-size: 20px;}
.assessment-result-stats span {display: block; margin-top: 2px; font-size: 12px; color: var(--ds-text-muted);}
.assessment-result-actions {display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px;}
.assessment-result-review {margin-top: 12px; border: 1px solid var(--ds-border); border-radius: 12px; overflow: hidden;}
.assessment-result-review > summary {padding: 12px 14px; cursor: pointer; font-weight: 750; background: var(--surface-muted, #f7f8f7);}
.assessment-result-review > .quiz-feedback {padding: 0 12px 12px;}
.assessment-timeout-note {margin-top: 10px; padding: 10px 12px; border-radius: 10px; background: #fff8e8; color: #765600;}
.assessment-review {margin-top: 14px; padding: 16px; border: 1px solid var(--ds-border); border-radius: 14px; background: var(--ds-surface);}
.assessment-review-head {display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; margin-bottom: 12px;}
.assessment-review-head h4 {margin: 6px 0 2px;}
.assessment-review [data-assessment-review-questions] {display: grid; gap: 12px;}
.assessment-review [data-assessment-review-questions] .question {border-bottom: 1px solid var(--ds-border); padding-bottom: 12px;}
.assessment-review [data-assessment-review-result] {margin: 12px 0;}
.assessment-admin-preview {margin-top: 12px;}
@media (max-width: 720px) {
.assessment-player-head {align-items: flex-start; flex-direction: column;}
.assessment-player-status {justify-content: flex-start; width: 100%;}
.assessment-question-actions {grid-template-columns: 1fr 1fr;}
.assessment-question-actions .assessment-flag {grid-column: 1 / -1; grid-row: 1;}
.assessment-question-actions [data-assessment-prev] {grid-column: 1; grid-row: 2;}
.assessment-question-actions [data-assessment-next] {grid-column: 2; grid-row: 2; justify-self: stretch;}
.assessment-result-stats {grid-template-columns: 1fr;}
.assessment-review-head {flex-direction: column;}
.assessment-submit-actions {flex-direction: column;}
}
.matching-question {display: grid; gap: 12px; margin-top: 12px;}
.matching-row {display: grid; grid-template-columns: minmax(0, 1fr) minmax(180px, 0.8fr); gap: 12px; align-items: center;}
.matching-left {min-width: 0;}
.ordering-question {display: grid; gap: 8px; margin-top: 12px;}
.ordering-item {display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 10px 12px; border: 1px solid var(--border, #d9e1dc); border-radius: 10px; background: var(--surface, #fff);}
.ordering-handle {color: var(--muted, #66776e); font-weight: 700;}
.ordering-actions {display: inline-flex; gap: 6px;}
.quiz-feedback-item.partial {border-left-color: #b7791f;}
@media (max-width: 700px) {
.matching-row {grid-template-columns: 1fr;}
.ordering-item {grid-template-columns: auto minmax(0, 1fr);}
.ordering-actions {grid-column: 2;}
}
.analytics-toolbar {display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:18px;}
.analytics-export-actions {display:flex; flex-wrap:wrap; gap:8px; justify-content:flex-end;}
.analytics-summary-grid,
.analytics-metric-grid {display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:10px;}
.analytics-summary-grid {margin-bottom:20px;}
.analytics-summary-grid > div,
.analytics-metric-grid > div {padding:14px; border:1px solid var(--ds-border); border-radius:12px; background:#f8fafc;}
.analytics-summary-grid span,
.analytics-metric-grid span {display:block; color:var(--ds-text-muted); font-size:12px;}
.analytics-summary-grid strong,
.analytics-metric-grid strong {display:block; margin-top:4px; font-size:20px;}
.analytics-metric-grid small {display:block; margin-top:3px; color:var(--ds-text-muted);}
.analytics-assessment-list {display:grid; gap:18px;}
.analytics-assessment-card {border:1px solid var(--ds-border); border-radius:16px; padding:18px; background:#fff;}
.analytics-assessment-head,
.analytics-section-head {display:flex; align-items:flex-start; justify-content:space-between; gap:14px; margin-bottom:14px;}
.analytics-assessment-head h3,
.analytics-history-section h3 {margin:2px 0 0;}
.analytics-metric-grid {margin-bottom:16px;}
.analytics-question-table td:first-child {min-width:260px; max-width:440px;}
.analytics-distribution {margin-top:8px;}
.analytics-distribution summary {cursor:pointer; color:var(--ds-accent); font-weight:700; font-size:12px;}
.analytics-distribution-list {display:grid; gap:5px; margin-top:7px;}
.analytics-distribution-item {display:grid; grid-template-columns:minmax(100px,1fr) auto auto; gap:8px; align-items:center; font-size:12px; padding:6px 8px; border:1px solid var(--ds-border); border-radius:8px; background:#fafafa;}
.analytics-distribution-item.correct {background:#f2f8f4;}
.analytics-distribution-item small {color:var(--ds-text-muted);}
.analytics-history-section {margin-top:22px; padding-top:18px; border-top:1px solid var(--ds-border);}
.analytics-old-version {color:var(--warning-text, #8a5a00); font-weight:700;}
.analytics-timing-note {margin-top:14px; padding:10px 12px; border-radius:10px; background:#f8fafc;}
@media (max-width: 820px) {
.analytics-toolbar {align-items:flex-start; flex-direction:column;}
.analytics-export-actions {width:100%; justify-content:stretch;}
.analytics-summary-grid,
.analytics-metric-grid {grid-template-columns:repeat(2,minmax(0,1fr));}
.analytics-assessment-card {padding:14px;}
}
@media (max-width: 520px) {
.analytics-summary-grid,
.analytics-metric-grid {grid-template-columns:1fr;}
.analytics-assessment-head {flex-direction:column;}
.analytics-distribution-item {grid-template-columns:1fr auto;}
.analytics-distribution-item small {grid-column:1 / -1;}
}
.math-inline-source {white-space: nowrap;}
.math-display-source,
.latex-formula-render,
mjx-container[display="true"] {max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;}
.math-display-source,
.latex-formula-render {padding: 8px 2px;}
.latex-formula {margin: 22px 0;
  border: 1px solid #d9e6e1;
  border-radius: 16px;
  background: linear-gradient(180deg, #fbfdfc 0%, #f6faf8 100%);
  overflow: hidden;}
.latex-formula-title {padding: 14px 18px 0; font-weight: 750; color: #243a34;}
.latex-formula-stage {min-height: 82px;
  display: grid;
  align-items: center;
  padding: 14px 18px 16px;
  background: #fff;}
.latex-formula-render {text-align: center; font-size: 1.08em;}
.latex-formula-source {border-top: 1px solid #e2ebe7; padding: 10px 18px 14px;}
.latex-formula-source summary {cursor: pointer; color: #4d625b; font-weight: 700;}
.latex-formula-source pre {margin: 10px 0;
  padding: 12px 14px;
  border-radius: 10px;
  background: #12211d;
  color: #eaf4f0;
  overflow-x: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;}
.latex-copy {position: static; display: inline-flex; margin-top: 2px;}
mjx-container {line-height: 1.2;}
mjx-container svg {max-width: none;}
@media (max-width: 680px) {
.latex-formula {border-radius: 13px;}
.latex-formula-stage {padding: 12px 10px 14px;}
.latex-formula-render {font-size: 1em;}
}
.teacher-card-grid {display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;}
.teacher-course-card,
.teacher-student-card,
.admin-teacher-card {border: 1px solid var(--border, #d8dee8);
  border-radius: 14px;
  padding: 16px;
  background: var(--surface, #fff);
  min-width: 0;}
.teacher-card-heading,
.teacher-card-meta,
.teacher-card-actions,
.teacher-enrollment-row {display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;}
.teacher-card-meta {margin-top: 12px; flex-wrap: wrap;}
.teacher-card-actions {margin-top: 16px; justify-content: flex-start;}
.teacher-enrollment-list {display: grid; gap: 10px; margin-top: 16px;}
.teacher-enrollment-row {border-top: 1px solid var(--border, #e5e7eb); padding-top: 10px;}
.teacher-profile-fields {display: grid; gap: 12px; margin: 0;}
.teacher-profile-fields > div {display: grid; grid-template-columns: minmax(120px, 180px) 1fr; gap: 12px;}
.teacher-profile-fields dt {font-weight: 600;}
.teacher-profile-fields dd {margin: 0; overflow-wrap: anywhere;}
.admin-teachers-layout {display: grid; grid-template-columns: minmax(260px, 360px) minmax(0, 1fr); gap: 18px;}
.admin-teachers-list {display: grid; gap: 10px;}
@media (max-width: 760px) {
.teacher-card-grid {grid-template-columns: 1fr;}
.teacher-card-heading,
.teacher-card-meta,
.teacher-enrollment-row {align-items: flex-start; flex-direction: column;}
.teacher-profile-fields > div {grid-template-columns: 1fr; gap: 4px;}
.admin-teachers-layout {grid-template-columns: 1fr;}
}
.teacher-admin-grid {display: grid;
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;}
.teacher-admin-sidebar {position: sticky; top: 16px;}
.teacher-admin-list {display: grid;}
.teacher-admin-list-item {width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 13px 14px;
  border: 0;
  border-bottom: 1px solid var(--border, #e5e7eb);
  background: transparent;
  text-align: left;
  cursor: pointer;}
.teacher-admin-list-item.active {background: rgba(68, 92, 140, .08);}
.teacher-admin-list-copy {display: grid; gap: 3px; min-width: 0;}
.teacher-admin-list-copy strong,
.teacher-admin-list-copy small {overflow: hidden; text-overflow: ellipsis; white-space: nowrap;}
.teacher-create-form,
.teacher-profile-form,
.teacher-assignment-add,
.teacher-transfer-row {display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  align-items: end;}
.teacher-profile-description {grid-column: 1 / -1;}
.teacher-profile-form label {display: grid; gap: 6px;}
.teacher-profile-actions {grid-column: 1 / -1; display: flex; gap: 10px; flex-wrap: wrap;}
.teacher-detail-stack,
.teacher-assignment-list,
.teacher-audit-list {display: grid; gap: 12px;}
.teacher-assignment-card,
.teacher-audit-row {display: grid;
  grid-template-columns: minmax(180px, 1fr) auto auto auto;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--border, #e5e7eb);
  border-radius: 12px;}
.teacher-assignment-card > div,
.teacher-audit-row > div {display: grid; gap: 3px;}
.teacher-permission {display: inline-flex; gap: 6px; align-items: center; white-space: nowrap;}
@media (max-width: 900px) {
.teacher-admin-grid {grid-template-columns: 1fr;}
.teacher-admin-sidebar {position: static;}
}
@media (max-width: 680px) {
.teacher-create-form,
.teacher-profile-form,
.teacher-assignment-add,
.teacher-transfer-row {grid-template-columns: 1fr;}
.teacher-assignment-card,
.teacher-audit-row {grid-template-columns: 1fr; align-items: start;}
.teacher-profile-actions {flex-direction: column;}
}
.admin-organization-grid {display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:16px;}
.admin-organization-card {display:grid; gap:14px; padding:18px; border:1px solid var(--ds-border); border-radius:16px; background:var(--ds-surface); box-shadow:var(--shadow-sm);}
.admin-organization-card.is-inactive {opacity:.72;}
.admin-organization-card-head {display:grid; grid-template-columns:54px minmax(0,1fr); gap:12px; align-items:center;}
.admin-organization-card-head h3 {margin:0;}
.admin-organization-card-head p {margin:4px 0 0;}
.admin-organization-logo {width:54px; height:54px; border:1px solid var(--ds-border); border-radius:14px; background:var(--ds-bg); display:grid; place-items:center; overflow:hidden; color:var(--ds-text-muted);}
.admin-organization-logo img {width:100%; height:100%; object-fit:contain;}
.admin-organization-meta {display:grid; gap:5px; font-size:13px; color:var(--ds-text-muted);}
.admin-organization-meta > span {display:flex; align-items:center; gap:6px; min-width:0; overflow-wrap:anywhere;}
.admin-organization-theme-preview {display:flex; align-items:center; gap:7px; padding:10px; border:1px solid var(--ds-border); border-radius:12px; background:var(--org-surface);}
.admin-organization-theme-preview > span {width:26px; height:26px; border-radius:8px; border:1px solid rgba(0,0,0,.08);}
.admin-organization-theme-preview > span:nth-child(1) {background:var(--org-primary);}
.admin-organization-theme-preview > span:nth-child(2) {background:var(--org-secondary);}
.admin-organization-theme-preview > span:nth-child(3) {background:var(--org-surface);}
.admin-organization-theme-preview small {margin-left:auto; color:var(--ds-text-muted);}
.admin-organization-actions {display:flex; justify-content:flex-end;}
.organization-editor-modal {width:min(1080px,calc(100vw - 32px));}
.org-editor-section {display:grid; gap:14px; padding:18px 0; border-bottom:1px solid var(--ds-border);}
.org-editor-section:first-child {padding-top:0;}
.org-editor-section:last-of-type {border-bottom:0;}
.org-editor-section h3 {margin:0;}
.org-form-grid {display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px;}
.org-field-wide {grid-column:1/-1;}
.org-theme-grid {display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:12px;}
.org-color-input {display:grid; grid-template-columns:44px minmax(0,1fr); gap:8px; align-items:center;}
.org-color-input input[type="color"] {width:44px; height:40px; padding:2px; border:1px solid var(--ds-border); border-radius:8px; background:var(--ds-surface);}
.org-domain-list {display:grid; gap:8px;}
.org-domain-row {display:flex; justify-content:space-between; align-items:center; gap:12px; padding:11px 12px; border:1px solid var(--ds-border); border-radius:10px; background:var(--ds-bg);}
.org-domain-add {display:grid; grid-template-columns:minmax(0,1fr) auto; gap:8px;}
.org-media-grid {display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px;}
.org-media-item {display:grid; gap:8px; padding:12px; border:1px solid var(--ds-border); border-radius:12px;}
.org-media-preview {height:86px; display:grid; place-items:center; overflow:hidden; border-radius:8px; background:var(--ds-bg); color:var(--ds-text-muted);}
.org-media-preview img {width:100%; height:100%; object-fit:contain;}
@media (max-width:1100px) {
.admin-organization-grid {grid-template-columns:repeat(2,minmax(0,1fr));}
.org-media-grid {grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:720px) {
.admin-organization-grid,
.org-form-grid,
.org-theme-grid,
.org-media-grid {grid-template-columns:1fr;}
.org-field-wide {grid-column:auto;}
.org-domain-row {align-items:flex-start; flex-direction:column;}
.org-domain-add {grid-template-columns:1fr;}
}
.lesson-link {touch-action: manipulation;}
.content {width: min(1440px, 100%); max-width: 1440px; margin: 0 auto; padding: 38px 28px 48px; flex: 1;}
.certificate-card {background: #fff; border-color: var(--ds-border); border-radius: 18px; box-shadow: none; padding: 26px; gap: 22px;}
.certificate-card-mark {width: 62px; height: 70px; background: #fcf0d5; color: #8a6928; border-radius: 14px; box-shadow: none;}
.certificate-card-copy h3 {font-size: 21px;}
.certificate-link-preview {background: #f3f6f0; border-color: var(--ds-border); font-size: 13px; color: var(--ds-text-muted);}
.course-window-topbar {min-height: 80px; height: auto; padding: 14px max(28px, calc((100vw - 1460px) / 2)); background: #fff; backdrop-filter: none;}
.course-window-topbar .brand-logo {width: 45px; height: 45px;}
.standalone-course-content {width: min(1500px, 100%); padding: 28px 28px 48px;}
.course-shell {grid-template-columns: 290px minmax(0, 1040px); gap: 26px;}
.course-nav {border-radius: 16px; padding: 18px 14px; top: 106px;}
.standalone-course-content .course-nav {top: 106px;}
.course-nav h3 {font-size: 17px; margin: 4px 8px 18px; line-height: 1.4;}
.course-module summary {font-size: 14px; padding: 13px 8px;}
.module-label {font-size: 12px;}
.lesson-link {min-height: 46px; padding: 11px 10px; font-size: 14px; color: #5a6a60; border-radius: 9px; line-height: 1.5;}
.lesson-link:hover {background: #f0f4ec;}
.lesson-link.active {background: #e3f0e8; color: #245a43; font-weight: 650;}
.lesson-state {width: 20px; height: 20px; display: grid; place-items: center; font-size: 14px;}
.lesson-state .ui-icon {width: 16px; height: 16px;}
.reader-head {padding: 30px 34px; border-radius: 18px; background: #e9f2e8; border-color: #dbe6d5;}
.reader-head h1 {font-size: clamp(26px, 2.3vw, 34px); color: var(--ds-text); line-height: 1.25;}
.reader-head p {color: #5b6c5e;}
.lesson-card {padding: 34px; border-radius: 18px; box-shadow: none;}
.lesson-card h2 {font-size: 28px; color: var(--ds-text); line-height: 1.3;}
.content-block {font-size: 17px; line-height: 1.8; color: #344c40;}
.text-small,
.text-muted {font-size: 15px;}
.text-lead,
.markdown-lead {color: #3b5848; font-size: 19px;}
.learning-outcomes {background: #f0f5eb; border-color: #dde8d5;}
.learning-outcomes > strong {color: #375640;}
.learning-outcomes li {color: #53674e;}
.callout,
.callout.info,
.callout.example {background: #eaf4f1; border-color: #74b7aa;}
.callout.note {background: #f5f1e2; border-color: #c2b07b;}
.callout.warning {background: #fff4dc; border-color: #dec271;}
.practice {background: #fdf9f0; border: 1px solid #eadfc5; border-left: 4px solid #d9b572; padding: 24px;}
.practice .badge {background: #f7eac9; color: #806226;}
.practice h3 {font-size: 21px; line-height: 1.35;}
.quiz {background: #f0f7f3; border-color: #cfe2d4; padding: 24px; border-radius: 16px;}
.quiz h3 {font-size: 22px;}
.question {padding: 20px; background: #fff; border-color: #dfe7db;}
.question-title {font-size: 17px; line-height: 1.7;}
.question-number,
.question-instruction {font-size: 13px;}
.option {padding: 13px 15px; min-height: 48px; border-color: #dde5d8; border-radius: 10px; font-size: 16px;}
.option:hover {background: #eff7ed; border-color: #a9c8b0;}
.option:has(input:checked) {border-color: #639a7b; background: #eaf4e9;}
.quiz-answer-review > span,
.quiz-feedback-explanation > span {font-size: 12px;}
.quiz-result,
.practice-result {font-size: 15px;}
.download-block {background: #f3f6ef; border-color: #dde6d8;}
.download-icon {background: #e0efe1; color: #47774e;}
.download-copy > strong {color: var(--ds-text);}
.lesson-footer-nav {padding: 20px; border-radius: 16px;}
.course-complete-banner {background: #e8f4e9; border-color: #c8dec9;}
.content-image img {box-shadow: none;}
.code-snippet-stage {background: #e9efe5; padding: 22px; border-radius: 14px;}
.code-snippet-stage::before,
.code-snippet-stage::after {display: none;}
.code-window {background: #fcfdf9; border: 1px solid #d6dfcf; box-shadow: 0 8px 20px rgba(53, 75, 41, .06);}
.code-window-bar {background: #eef3e8; border-bottom-color: #dbe4d3;}
.code-window-language {color: #657558; background: transparent;}
.code-copy {background: #e0ebd9; border-color: #c9d9bc; color: #38552c; min-height: 36px; font-size: 12px;}
.code-copy:hover,
.code-copy.copied {background: #cce3c5; color: #31552a; border-color: #9ab98e;}
.code-editor,
.code-snippet-pre {background: #fcfdf9; color: #3b4e39;}
.code-line-numbers {background: #f4f7ef; color: var(--ds-text-muted); border-right-color: #e2e9da;}
.code-caption,
.code-title {color: #637456;}
.token-comment {color: var(--ds-text-muted);}
.token-string {color: #386827;}
.token-property {color: #246f6b;}
.token-keyword {color: #875337;}
.token-number,
.token-literal {color: #99533b;}
.inline-code {background: #edf3e8; border-color: #dbe6d1; color: #536b41;}
@media (max-width: 1000px) {
.course-shell {grid-template-columns: 240px minmax(0, 1fr); gap: 18px;}
.lesson-card,
.reader-head {padding: 26px;}
}
@media (max-width: 760px) {
.content {padding: 26px 18px 36px;}
.course-shell {grid-template-columns: minmax(0, 1fr);}
.course-nav {display: none;}
.standalone-course-content {padding: 18px 14px 32px;}
.course-window-topbar {padding: 12px 18px;}
.course-window-topbar .brand-wordmark small {display: none;}
.reader-head,
.lesson-card {padding: 24px;}
.lesson-card h2 {font-size: 25px;}
.practice,
.quiz {padding: 20px 16px;}
.question {padding: 16px 13px;}
.lesson-footer-nav {padding: 18px;}
.lesson-complete-side {flex-wrap: wrap; gap: 12px;}
.lesson-complete-side .btn {flex: 1 1 auto;}
}
@media (max-width: 560px) {
.certificate-card {padding: 22px;}
.content-block {font-size: 16px;}
.reader-head,
.lesson-card {padding: 23px 19px;}
.code-snippet-stage {padding: 10px;}
.code-snippet-pre {font-size: 13px;}
}
.course-nav-kicker {margin: 4px 8px 6px;
  color: var(--ds-text-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;}
.course-nav-progress-head {display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 8px 8px;
  color: var(--ds-text-muted);
  font-size: 12px;
  font-weight: 700;}
.course-nav-progress-head strong {color: var(--ds-accent); font-size: 13px;}
.course-nav-progress-copy {margin: 7px 8px 16px;}
.reader-head {margin-bottom: 6px;
  color: var(--ds-text);
  padding: 12px 4px 24px;
  border: 0;
  border-bottom: 1px solid var(--ds-border);
  border-radius: 0;
  background: transparent;}
.reader-head .eyebrow {color: var(--ds-text-muted);}
.reader-head h1 {max-width: 850px;
  margin: 8px 0 10px;
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.12;
  letter-spacing: -.035em;}
.lesson-context {display: flex;
  align-items: center;
  gap: 7px;
  color: var(--ds-text-muted);
  font-size: 12px;
  font-weight: 750;}
.lesson-meta {display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;}
.lesson-meta > span {padding: 5px 9px;
  border: 1px solid #dce6da;
  border-radius: 999px;
  background: #f6f8f3;
  color: var(--ds-accent-hover);
  font-size: 12px;
  font-weight: 700;}
.reader-head .lesson-description {max-width: 760px;
  margin-top: 16px;
  color: var(--ds-text-muted);
  font-size: 16px;
  line-height: 1.65;}
.learning-outcomes.lesson-outcomes {max-width: 760px;
  margin-top: 16px;
  padding: 0;
  border: 1px solid #dfe7d9;
  border-radius: 12px;
  background: #f8faf6;}
.lesson-outcomes > summary {display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 14px;
  cursor: pointer;
  color: var(--ds-accent-hover);
  font-size: 13px;
  font-weight: 750;
  list-style: none;}
.lesson-outcomes > summary::-webkit-details-marker {display: none;}
.lesson-outcomes > summary > span {display: inline-grid;
  min-width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 999px;
  background: #e8f0e4;
  font-size: 11px;}
.lesson-outcomes ul {margin: 0; padding: 0 34px 14px;}
.lesson-outcomes li {margin-top: 7px; color: var(--ds-text); line-height: 1.55;}
.lesson-card.lesson-flow {padding: 12px 0 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;}
.lesson-card.lesson-flow > .content-block:first-child {margin-top: 6px;}
.course-nav {border-color: #e1e7dc;
  box-shadow: none;}
.course-module {margin-top: 10px; padding-top: 10px;}
.lesson-link {border: 1px solid transparent;}
.lesson-link.active {border-color: #cadfcd;
  background: #edf5eb;
  box-shadow: inset 3px 0 0 #5e8f6f;}
.lesson-link.active .lesson-state {color: #2f6b4c;}
.lesson-section-nav {top: 94px;
  margin: 8px 0 22px;
  padding: 7px 2px;
  gap: 10px;
  border: 0;
  border-bottom: 1px solid var(--ds-border);
  border-radius: 0;
  background: rgba(246,247,243,.96);
  box-shadow: none;}
.lesson-section-nav-label {padding-left: 2px; font-size: 10px; letter-spacing: .075em;}
.lesson-section-nav-links {scrollbar-width: none;
  -ms-overflow-style: none;}
.lesson-section-nav-links::-webkit-scrollbar {width: 0;
  height: 0;
  display: none;}
.lesson-section-nav a {position: relative;
  padding: 8px 9px 9px;
  border-radius: 7px;
  background: transparent;}
.lesson-section-nav a:hover {background: var(--ds-accent-subtle); color: var(--ds-text);}
.lesson-section-nav a.active {background: transparent; color: var(--ds-accent-hover);}
.lesson-section-nav a.active::after {content: "";
  position: absolute;
  right: 9px;
  bottom: -8px;
  left: 9px;
  height: 2px;
  border-radius: 2px;
  background: #5f8b70;}
.lesson-section {position: relative;
  margin-bottom: 42px;
  padding: 0 0 34px;
  border-bottom: 1px solid var(--ds-border);
  background: transparent;}
.lesson-section-head {align-items: center; margin-bottom: 22px;}
.lesson-section-head > div {min-width: 0;}
.lesson-section-head h2 {font-size: clamp(23px, 2vw, 29px); letter-spacing: -.025em;}
.lesson-section-head > div::before {display: inline-flex;
  margin-bottom: 8px;
  color: var(--ds-text-muted);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .075em;
  text-transform: uppercase;}
.section-theory .lesson-section-head > div::before {content: "Теория";}
.section-practice .lesson-section-head > div::before {content: "Практика"; color: #765b18;}
.section-assessment .lesson-section-head > div::before {content: "Проверка знаний"; color: #216645;}
.section-media .lesson-section-head > div::before {content: "Медиа"; color: var(--ds-accent);}
.section-reference .lesson-section-head > div::before {content: "Справочный материал"; color: var(--ds-text-muted);}
.section-default .lesson-section-head > div::before {content: "Раздел";}
.section-reference,
.section-assessment,
.section-media {padding: 0 0 34px;
  border: 0;
  border-bottom: 1px solid var(--ds-border);
  border-radius: 0;
  background: transparent;}
.section-reference {opacity: 1;}
.section-reference .lesson-section-content {padding-left: 16px; border-left: 2px solid var(--ds-border);}
.section-assessment .lesson-section-content {padding-left: 16px; border-left: 3px solid #89a795;}
.section-media .lesson-section-content {padding-left: 16px; border-left: 2px solid var(--ds-accent-border);}
.section-top-link {border: 0; background: transparent;}
.section-top-link:hover {background: var(--ds-accent-subtle); color: var(--ds-accent-hover);}
.practice {margin: 26px 0;
  padding: 24px 24px 22px;
  border: 1px solid #e1d5b8;
  border-left: 4px solid #c89f55;
  border-radius: 14px;
  background: #fffaf0;}
.practice .badge {letter-spacing: .025em; text-transform: uppercase;}
.practice .practice-solution {border-color: #cbe2d2; background: #f3faf5;}
.quiz {margin: 28px 0;
  padding: 26px;
  border: 1px solid #d5e1d6;
  border-top: 4px solid #71947d;
  border-radius: 14px;
  background: #f8fbf7;}
.quiz > .row-wrap:first-child {margin-bottom: 10px;}
.question {margin-top: 22px;
  padding: 22px 0 0;
  border: 0;
  border-top: 1px solid #dfe6dd;
  border-radius: 0;
  background: transparent;}
.question:first-of-type {padding-top: 4px;}
.option {min-height: 52px;
  margin: 8px 0;
  padding: 13px 15px;
  border-color: var(--ds-border);
  border-radius: 10px;
  background: #fff;}
.option:hover {border-color: var(--ds-accent-border); background: var(--ds-accent-subtle);}
.option:has(input:checked) {border-color: var(--ds-accent); background: var(--ds-accent-soft); box-shadow: 0 0 0 2px rgba(95,141,112,.08);}
.quiz-feedback-explanation {padding-top: 2px; border-top: 1px solid var(--ds-border);}
.content-collapsible {border-color: var(--ds-border);
  border-radius: 10px;
  background: var(--ds-surface-subtle);}
.content-collapsible > summary {padding: 12px 14px; font-size: 13px;}
.collapsible-source,
.collapsible-reference {background: var(--ds-surface-subtle);}
.collapsible-source > summary::before,
.collapsible-transcript > summary::before {opacity: .75;}
.course-mobile-context {display: flex; align-items: center; gap: 10px; min-width: 0; text-align: left;}
.course-mobile-context > span:last-child {display: grid; min-width: 0;}
.course-mobile-context strong {font-size: 12px;}
.course-mobile-context small {max-width: min(62vw, 420px);
  overflow: hidden;
  color: var(--ds-text-muted);
  font-size: 11px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;}
.course-mobile-progress {flex: 0 0 auto; color: var(--ds-accent); font-size: 13px; font-weight: 800;}
@media (max-width: 1000px) {
.reader-head {padding: 10px 2px 22px;}
.lesson-card.lesson-flow {padding: 8px 0 0;}
}
@media (max-width: 760px) {
.reader-head,
.lesson-card,
.lesson-card.lesson-flow {padding-right: 0; padding-left: 0;}
.reader-head h1 {font-size: clamp(28px, 8vw, 36px);}
.lesson-section-nav {top: 76px; margin-inline: -2px;}
.lesson-section {margin-bottom: 34px; padding-bottom: 28px;}
.section-reference .lesson-section-content,
.section-assessment .lesson-section-content,
.section-media .lesson-section-content {padding-left: 10px;}
.practice,
.quiz {padding: 20px 16px;}
.course-mobile-toc {position: sticky; top: 76px; z-index: 19;}
}
@media (max-width: 560px) {
.reader-head,
.lesson-card,
.lesson-card.lesson-flow {padding-right: 0; padding-left: 0;}
.lesson-meta {gap: 6px;}
.lesson-meta > span {font-size: 11px;}
.course-mobile-context small {max-width: 54vw;}
}
.course-scroll-header {will-change: transform;
  transition: transform 180ms ease, box-shadow 180ms ease;}
.course-scroll-header.is-scroll-hidden {transform: translateY(-105%);}
html.course-header-hidden {--course-sticky-top: 12px;}
html:not(.course-header-hidden) {--course-sticky-top: 94px;}
.lesson-section-nav {top: var(--course-sticky-top, 94px); transition: top 180ms ease;}
.standalone-course-content .course-nav {transition: top 180ms ease;}
html.course-header-hidden .standalone-course-content .course-nav {top: 20px;}
.course-reader .muted,
.course-reader .small.muted,
.course-nav .muted,
.lesson-context,
.lesson-section-head > div::before,
.section-reference .lesson-section-head > div::before,
.course-mobile-context small,
.code-caption,
.code-title {color: var(--ds-text-muted);}
.section-reference {opacity: 1;}
.code-line-numbers {color: #65745f;}
.token-comment {color: #5f7157;}
@media (max-width: 760px) {
html:not(.course-header-hidden) {--course-sticky-top: 76px;}
html.course-header-hidden {--course-sticky-top: 8px;}
.course-mobile-toc {top: var(--course-sticky-top, 76px); transition: top 180ms ease;}
.lesson-section-nav {top: calc(var(--course-sticky-top, 76px) + 54px);}
}
@media (prefers-reduced-motion: reduce) {
.course-scroll-header,
.lesson-section-nav,
.standalone-course-content .course-nav,
.course-mobile-toc {transition: none !important;}
}
.download-copy p,
.audio-copy p,
.video-copy p {color: var(--ds-text-muted);}
.content,
.standalone-course-content,
.course-reader,
.course-nav,
.lesson-card,
.reader-head,
.question,
.practice,
.quiz,
.learning-outcomes,
.collapsible-block,
.media-group,
.download-block {color: var(--ds-text);}
.course-nav-kicker,
.course-nav-progress-head,
.course-nav-progress-copy,
.lesson-context,
.reader-head .lesson-description,
.lesson-section-nav-label,
.content-caption,
.image-caption,
.audio-copy p,
.video-copy p,
.download-copy p,
.code-caption,
.code-title {color: var(--ds-text-muted);}
.course-nav h1,
.course-nav h2,
.course-nav h3,
.course-nav h4,
.reader-head h1,
.reader-head h2,
.reader-head h3,
.lesson-card h1,
.lesson-card h2,
.lesson-card h3,
.question,
.option,
.practice,
.quiz {color: var(--ds-text);}
.course-exit-action {display: inline-flex;
  align-items: center;
  gap: 8px;
  width: auto;
  min-height: 36px;
  margin: 0 4px 18px;
  padding: 6px 8px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--ds-accent);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
  cursor: pointer;}
.course-exit-action:hover {background: var(--ds-accent-subtle); color: var(--ds-accent-hover);}
.course-exit-action:focus-visible {outline-color: var(--ds-accent);}
.course-nav-header {margin: 0 4px 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ds-border);}
.course-nav-header .course-nav-kicker {margin: 0 0 6px;
  color: var(--ds-text-muted);}
.course-nav-header h3 {margin: 0;
  color: var(--ds-text);
  font-size: 18px;
  font-weight: 760;
  line-height: 1.28;
  letter-spacing: -.015em;
  overflow-wrap: anywhere;}
.admin-preview-note {display: grid;
  gap: 10px;
  margin: 0 4px 18px;
  padding: 13px 14px 14px;
  border: 1px solid var(--ds-accent-border);
  border-radius: 12px;
  background: var(--ds-accent-subtle);
  color: var(--ds-text);
  box-shadow: none;}
.admin-preview-note-head {display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;}
.admin-preview-badge {display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 8px;
  border: 1px solid var(--ds-accent-border);
  border-radius: 999px;
  background: var(--ds-accent-soft);
  color: var(--ds-accent-hover);
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .055em;
  line-height: 1;
  text-transform: uppercase;}
.admin-preview-note strong {color: var(--ds-accent-hover);
  font-size: 13px;
  line-height: 1.3;}
.admin-preview-note p {margin: 0;
  color: var(--ds-text-muted);
  font-size: 12.5px;
  line-height: 1.5;}
.admin-preview-edit {width: 100%;
  justify-content: center;
  margin-top: 2px;}
.lesson-link {color: var(--ds-text-muted);}
.lesson-link:hover {color: var(--ds-accent-hover);}
.lesson-link.active {color: var(--ds-accent-hover); background: var(--ds-accent-subtle); border-color: var(--ds-accent-border);}
.lesson-section-nav a {color: var(--ds-text-muted);}
.lesson-section-nav a:hover,
.lesson-section-nav a.active {color: var(--ds-accent-hover);}
.lesson-meta > span {color: var(--ds-accent-hover); background: var(--ds-bg); border-color: var(--ds-border);}
.option {color: var(--ds-text); background: #fff; border-color: var(--ds-border);}
.option:hover {color: var(--ds-text); background: var(--ds-accent-subtle); border-color: var(--ds-accent-border);}
.option:has(input:checked) {color: var(--ds-accent-hover); background: var(--ds-accent-subtle); border-color: var(--ds-accent);}
.code-window-language,
.code-line-numbers,
.token-comment {color: var(--ds-text-muted);}
.code-title,
.code-caption {color: var(--ds-text-muted);}
@media (max-width: 1180px) and (min-width: 1001px) {
.course-shell {grid-template-columns: 260px minmax(0, 1fr);}
.course-nav-header h3 {font-size: 17px;}
.admin-preview-note {padding: 12px;}
}
.course-mobile-context > .ui-icon {width: 20px; height: 20px;}
.course-exit-action > .ui-icon {width: 17px; height: 17px;}
@keyframes spin { to { transform: rotate(360deg); } }