:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --border: rgba(15, 23, 42, 0.12);
  --primary: #0f766e;
  --primary-ink: #ffffff;
  --secondary: #e2e8f0;
  --secondary-ink: #1f2937;
  --danger: #b91c1c;
  --primary-strong: #0b5f57;
  --focus-ring: rgba(15, 118, 110, 0.4);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 14px;
  --space-4: 18px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --font-sans: "Source Sans 3", "Segoe UI", "Noto Sans", sans-serif;
}

* {
  box-sizing: border-box;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: clamp(12px, 1.6vw, 20px);
}

.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.row {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

input,
textarea,
select {
  width: 100%;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  margin: var(--space-1) 0 var(--space-3);
  font-family: inherit;
  font-size: 14px;
  background: #fff;
}

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  cursor: pointer;
  font-weight: 700;
  background: #f1f5f9;
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.05s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

button:hover,
.btn:hover {
  background: #e2e8f0;
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.12);
}

button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

button:disabled,
.btn:disabled {
  opacity: 0.72;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-primary,
button.primary,
.btn.primary {
  background: var(--primary);
  color: var(--primary-ink);
  border-color: transparent;
}

.btn-primary:hover,
button.primary:hover,
.btn.primary:hover {
  background: var(--primary-strong);
  box-shadow: 0 6px 16px rgba(15, 118, 110, 0.25);
}

.btn-secondary,
button.secondary,
.btn.secondary {
  background: var(--secondary);
  color: var(--secondary-ink);
  border-color: #cbd5e1;
}

.btn-secondary:hover,
button.secondary:hover,
.btn.secondary:hover {
  background: #cbd5e1;
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--border);
}

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

.brand-title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  letter-spacing: 0.2px;
}

.modules-page {
  --modules-grid-gap: clamp(12px, 1.4vw, 16px);
  --module-card-width: clamp(290px, 31vw, 340px);
  --modules-grid-max: 1080px;
}

.modules-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.modules-header__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding-inline: clamp(12px, 2vw, 24px);
  padding-block: clamp(12px, 2vw, 18px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(8px, 1.2vw, 12px);
}

.modules-banner {
  display: block;
  width: min(720px, 92vw);
  max-width: 100%;
  height: auto;
  object-fit: contain;
}

.modules-title {
  margin: 0;
  text-align: center;
  font-size: clamp(20px, 2.6vw, 30px);
  letter-spacing: 0.2px;
}

.modules-user {
  margin: 0;
}

.modules-shell {
  display: grid;
  padding-top: clamp(6px, 1vw, 10px);
  padding-bottom: clamp(10px, 1.4vw, 14px);
}

.modules-page .container {
  padding-inline: clamp(12px, 2vw, 20px);
  padding-block: clamp(6px, 1vw, 12px);
}

.modules-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--modules-grid-gap);
  width: 100%;
  max-width: var(--modules-grid-max);
  margin: 0 auto;
}

.module-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 20px;
  min-height: 185px;
  flex: 0 1 var(--module-card-width);
  max-width: var(--module-card-width);
}

.module-card h3 {
  margin: 0 0 6px;
  font-size: 16px;
}

.module-desc {
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  padding-bottom: 0.12em;
}

.module-actions {
  margin-top: auto;
}

.auth-page {
  min-height: 100vh;
  display: grid;
  align-content: start;
  justify-items: center;
  gap: var(--space-3);
  padding-top: 32px;
}

.brand-header {
  display: grid;
  justify-items: center;
  gap: var(--space-2);
  text-align: center;
}

.brand-logo-wrap {
  width: clamp(120px, 18vw, 200px);
  height: clamp(120px, 18vw, 200px);
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.brand-logo {
  width: 72%;
  height: 72%;
  object-fit: contain;
}

.auth-card {
  width: min(420px, 100%);
}

.auth-card h2 {
  margin: 0 0 var(--space-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--border);
  background: #f8fafc;
  color: var(--muted);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: #eef2ff;
  color: #1e3a8a;
}

.msg,
.toast {
  margin-top: var(--space-2);
  color: var(--danger);
  font-weight: 600;
  font-size: 13px;
}

@media (max-width: 1024px) {
  .modules-page {
    --module-card-width: clamp(260px, 46vw, 320px);
    --modules-grid-max: 760px;
  }
}

@media (max-width: 720px) {
  .grid {
    grid-template-columns: 1fr;
  }
  .row {
    flex-direction: column;
  }
  .container {
    padding: 14px;
  }
  .auth-page {
    padding-top: 24px;
  }
}

@media (max-width: 640px) {
  .modules-page {
    --module-card-width: 100%;
    --modules-grid-gap: 12px;
  }
}

/* ===== LU THEME (scoped) ===== */
body.lu-theme {
  --lu-bg: #f6f4f1;
  --lu-surface: #ffffff;
  --lu-ink: #111827;
  --lu-muted: #6b7280;
  --lu-border: rgba(17, 24, 39, 0.12);
  --lu-primary: #7f1d1d;
  --lu-primary-ink: #ffffff;
  --lu-focus: rgba(127, 29, 29, 0.35);
  --lu-radius: 16px;
  --lu-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  --lu-space-1: 8px;
  --lu-space-2: 12px;
  --lu-space-3: 18px;
  --lu-space-4: 24px;
  --lu-space-5: 32px;
  font-family: var(--font-sans);
  line-height: 1.55;
  letter-spacing: 0;
  color: var(--lu-ink);
  background: var(--lu-bg);
}

[hidden] {
  display: none !important;
}

body.lu-theme .lu-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--lu-space-4);
}

body.lu-theme .lu-header {
  background: var(--lu-surface);
  border-bottom: 1px solid var(--lu-border);
}

body.lu-theme .lu-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lu-space-3);
  padding: var(--lu-space-3) 0;
}

body.lu-theme .lu-brand {
  display: flex;
  align-items: center;
  gap: var(--lu-space-2);
}

body.lu-theme .lu-brand__logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

body.lu-theme .lu-brand__title {
  font-weight: 700;
  font-size: 16px;
  color: var(--lu-ink);
}

body.lu-theme.modules-page .lu-brand__logo {
  width: 64px;
  height: 64px;
}

body.lu-theme.modules-page .lu-brand__title {
  font-size: 22px;
}

body.lu-theme .lu-main {
  padding: var(--lu-space-5) 0 var(--lu-space-5);
}

body.lu-theme.modules-page {
  background: var(--lu-bg);
}

body.lu-theme .lu-hero__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--lu-space-4);
  flex-wrap: wrap;
}

body.lu-theme .lu-hero__text {
  max-width: 560px;
}

body.lu-theme .lu-hero__subtitle {
  margin: 8px 0 0;
  color: var(--lu-muted);
  font-size: 15px;
}

body.lu-theme .lu-hero__meta {
  display: flex;
  align-items: center;
}

body.lu-theme .lu-hero__user {
  margin: 0;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--lu-border);
  background: var(--lu-surface);
  color: var(--lu-muted);
  font-size: 13px;
}

body.lu-theme .lu-modstack {
  display: grid;
  gap: 0;
  counter-reset: module;
}

body.lu-theme .lu-band {
  position: relative;
  padding: var(--lu-space-5) 0;
  background: var(--lu-surface);
  counter-increment: module;
}

body.lu-theme .lu-band:nth-child(even) {
  background: #f7f3ef;
}

body.lu-theme .lu-band::before {
  content: "";
  position: absolute;
  left: 0;
  top: 28px;
  width: 6px;
  height: 56px;
  background: var(--lu-primary);
  border-radius: 0 6px 6px 0;
}

body.lu-theme .lu-feature {
  display: flex;
  align-items: center;
  gap: var(--lu-space-5);
}

body.lu-theme .lu-band:nth-child(even) .lu-feature {
  flex-direction: row-reverse;
}

body.lu-theme .lu-feature__copy {
  flex: 1;
  min-width: 0;
  max-width: 520px;
  display: grid;
  gap: var(--lu-space-2);
}

body.lu-theme .lu-feature__title {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
}

body.lu-theme .lu-feature__title::before {
  content: "Step " counter(module);
  display: block;
  font-size: 24px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lu-muted);
  margin-bottom: 6px;
}

body.lu-theme .lu-feature__media {
  flex: 1;
  min-width: 0;
  aspect-ratio: 4 / 3;
  border-radius: var(--lu-radius);
  border: 1px solid var(--lu-border);
  background-size: cover;
  background-position: center;
}

body.lu-theme .lu-feature__actions {
  margin-top: var(--lu-space-2);
}

body.lu-theme .lu-feature__actions .lu-btn {
  min-width: 140px;
}

body.lu-theme .lu-band .module-desc {
  margin: 0;
  color: var(--lu-muted);
  line-height: 1.6;
  padding-bottom: 0.12em;
  max-height: none;
}

body.lu-theme .lu-feature__copy {
  padding-bottom: 8px;
}

body.lu-theme.module-page {
  background: var(--lu-bg);
  color: var(--lu-ink);
}

body.lu-theme.module-page .lu-brand__logo {
  width: 64px;
  height: 64px;
}

body.lu-theme.module-page .lu-brand__title {
  font-size: 22px;
}

body.lu-theme.course-summary-page .lu-brand__logo {
  width: 64px;
  height: 64px;
}

body.lu-theme.course-summary-page .lu-brand__title {
  font-size: 22px;
}

body.lu-theme.module-page .lu-module-hero {
  padding-bottom: var(--lu-space-4);
}

body.lu-theme.module-page .lu-hero__subtitle {
  margin-top: 6px;
  color: var(--lu-muted);
  font-size: 15px;
}

body.lu-theme.module-page .lu-hero__actions {
  display: flex;
  align-items: center;
  gap: var(--lu-space-2);
}

body.lu-theme.module-page .lu-module-layout {
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: var(--lu-space-4);
  padding: 0;
  max-width: none;
}

body.lu-theme.module-page .lu-module-layout .main {
  min-width: 0;
}

body.lu-theme.module-page .toc {
  position: sticky;
  top: 108px;
  align-self: start;
  padding: var(--lu-space-3);
}

body.lu-theme.module-page .toc h3 {
  margin: 0 0 var(--lu-space-2);
  font-size: 16px;
}

body.lu-theme.module-page .toc .toc-item {
  border: 1px solid transparent;
}

body.lu-theme.module-page .toc .toc-item.active {
  background: rgba(127, 29, 29, 0.12);
  border-color: rgba(127, 29, 29, 0.2);
}

body.lu-theme.module-page .card {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius);
  box-shadow: var(--lu-shadow);
}

body.lu-theme.module-page .card.alert {
  border-color: #fca5a5;
  background: #fef2f2;
  color: #7f1d1d;
}

body.lu-theme.module-page .card.notice {
  border-color: #bfdbfe;
  background: #eff6ff;
  color: #1e3a8a;
}

body.lu-theme.module-page .lu-page-card {
  padding: var(--lu-space-4);
}

body.lu-theme.module-page .lu-page-title {
  margin: 0 0 var(--lu-space-2);
  font-size: 22px;
  font-weight: 700;
}

body.lu-theme.module-page .lu-page-content {
  display: grid;
  gap: var(--lu-space-3);
}

body.lu-theme.module-page .pager {
  border-bottom: 1px solid var(--lu-border);
  padding-bottom: var(--lu-space-2);
  margin-bottom: var(--lu-space-3);
}

body.lu-theme.module-page .pageno {
  color: var(--lu-muted);
}

body.lu-theme.module-page .btn {
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid var(--lu-border);
  background: #f8fafc;
  color: var(--lu-ink);
  padding: 8px 12px;
}

body.lu-theme.module-page .btn:disabled {
  opacity: .6;
  cursor: not-allowed;
}

body.lu-theme.module-page .tf-btn {
  border-radius: 10px;
  border: 1px solid var(--lu-border);
  background: var(--lu-surface);
  color: var(--lu-ink);
  font-weight: 600;
}

body.lu-theme.module-page .tf-btn.active {
  border-color: var(--lu-primary);
  background: rgba(127, 29, 29, 0.08);
}

body.lu-theme.module-page .blank-input,
body.lu-theme.module-page .blank-select,
body.lu-theme.module-page .essay {
  border-radius: 10px;
  border: 1px solid var(--lu-border);
  background: #ffffff;
  font-weight: 600;
}

body.lu-theme.module-page select.blank-select.blank-correct {
  border-color: rgba(22, 163, 74, 0.6);
  background: rgba(22, 163, 74, 0.12);
}

body.lu-theme.module-page select.blank-select.blank-incorrect {
  border-color: rgba(185, 28, 28, 0.6);
  background: rgba(185, 28, 28, 0.08);
}

body.lu-theme.module-page .blank-item {
  border-radius: 12px;
  border: 1px solid var(--lu-border);
  background: rgba(127, 29, 29, 0.03);
}

/* Select-only highlighting for blanks */

body.lu-theme.module-page .chip {
  border: 1px solid var(--lu-border);
  background: rgba(127, 29, 29, 0.05);
}

body.lu-theme.module-page .global-controls {
  border-top: 1px solid var(--lu-border);
  padding-top: var(--lu-space-2);
}

body.lu-theme .lu-section {
  padding: var(--lu-space-3) 0 var(--lu-space-5);
}

body.lu-theme .lu-modules-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--lu-space-4);
  width: 100%;
  margin: 0;
  max-width: none;
}

body.lu-theme .lu-module-card {
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  gap: 0;
  min-height: 0;
  max-width: none;
  flex: initial;
}

body.lu-theme .lu-card__thumb {
  height: 120px;
  background-image: linear-gradient(135deg, rgba(127, 29, 29, 0.45), rgba(15, 23, 42, 0.2)),
    url("/assets/images/school-banner.png");
  background-size: cover;
  background-position: center;
}

body.lu-theme .lu-module-card .lu-card__body {
  padding: var(--lu-space-3);
  display: grid;
  gap: 6px;
  flex: 1;
}

body.lu-theme .lu-module-card .lu-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

body.lu-theme .lu-module-card .module-desc {
  margin: 0;
  color: var(--lu-muted);
  line-height: 1.6;
  padding-bottom: 2px;
}

body.lu-theme .lu-module-card .lu-card__actions {
  padding: 0 var(--lu-space-3) var(--lu-space-3);
  margin-top: auto;
}

body.lu-theme .lu-module-card .lu-btn {
  width: 100%;
}

body.lu-theme .lu-auth-split {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  background: var(--lu-bg);
}

body.lu-theme .lu-auth-visual {
  position: relative;
  overflow: hidden;
  color: #ffffff;
}

body.lu-theme .lu-auth-visual__bg {
  position: absolute;
  inset: 0;
  background-image: url("/assets/images/login.png");
  background-size: cover;
  background-position: center;
  transform: scale(1.02);
}

body.lu-theme .lu-auth-visual__content {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--lu-space-2);
  padding: var(--lu-space-5);
  max-width: 420px;
}

body.lu-theme .lu-auth-visual__logo {
  width: 68px;
  height: 68px;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.2));
}

body.lu-theme .lu-auth-visual__title {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
}

body.lu-theme .lu-login-card-logo {
  display: block;
  width: min(880px, 91%);
  height: auto;
  margin: 0 auto var(--lu-space-2);
  border-radius: 10px;
  object-fit: cover;
}

body.lu-theme .lu-login-slogan {
  text-align: center;
  color: var(--lu-ink);
  font-weight: 600;
  margin: 0 0 var(--lu-space-3);
  font-size: 20px;
  letter-spacing: 0.02em;
}

body.lu-theme .lu-auth-card {
  position: relative;
}

body.lu-theme .auth-panel--signup {
  display: none;
}

body.lu-theme .lu-auth-card.is-signup .auth-panel--signin {
  display: none;
}

body.lu-theme .lu-auth-card.is-signup .auth-panel--signup {
  display: block;
}

body.lu-theme .lu-captcha {
  display: grid;
  gap: 8px;
}

body.lu-theme .lu-captcha__row {
  display: flex;
  gap: 10px;
  align-items: center;
}

body.lu-theme .lu-captcha__img {
  border: 1px solid var(--lu-border);
  border-radius: 8px;
  height: 48px;
  width: 160px;
  object-fit: contain;
  background: #ffffff;
}

body.lu-theme .lu-auth-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--lu-space-5);
  background: var(--lu-bg);
}

body.lu-theme .lu-hero {
  padding-bottom: var(--lu-space-3);
}

body.lu-theme .lu-hero__title {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  color: var(--lu-ink);
}

body.lu-theme .lu-card {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius);
  box-shadow: var(--lu-shadow);
  padding: var(--lu-space-4);
}

body.lu-theme .lu-card--login {
  max-width: 420px;
  width: min(420px, 100%);
  margin: 0 auto;
}

body.lu-theme .lu-card__title {
  margin: 0 0 var(--lu-space-2);
  font-size: 20px;
  font-weight: 700;
}

body.lu-theme .lu-form {
  display: grid;
  gap: var(--lu-space-2);
}

body.lu-theme .lu-field {
  display: grid;
  gap: 6px;
}

body.lu-theme .lu-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--lu-ink);
}

body.lu-theme .lu-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--lu-border);
  background: #ffffff;
  font-family: inherit;
  font-size: 14px;
}

body.lu-theme .lu-input:focus {
  outline: 2px solid var(--lu-focus);
  outline-offset: 1px;
  border-color: var(--lu-primary);
}

body.lu-theme .lu-actions {
  display: flex;
  gap: var(--lu-space-2);
  flex-wrap: wrap;
  margin-top: var(--lu-space-1);
}

body.lu-theme .lu-btn {
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid var(--lu-border);
  background: #f8fafc;
  color: var(--lu-ink);
  text-decoration: none;
}

body.lu-theme .lu-btn--primary {
  background: var(--lu-primary);
  color: var(--lu-primary-ink);
  border-color: transparent;
}

body.lu-theme .lu-btn--secondary {
  background: #ffffff;
}

body.lu-theme .lu-msg {
  margin-top: var(--lu-space-1);
  color: #b91c1c;
  font-weight: 600;
  font-size: 13px;
}

body.lu-theme.lu-modal-open {
  overflow: hidden;
}

body.lu-theme .lu-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

body.lu-theme .lu-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
}

body.lu-theme .lu-modal__dialog {
  position: relative;
  z-index: 1;
  width: min(720px, 92vw);
  max-height: 85vh;
  overflow: auto;
  background: var(--lu-surface);
  border-radius: var(--lu-radius);
  border: 1px solid var(--lu-border);
  box-shadow: var(--lu-shadow);
  padding: var(--lu-space-4);
}

body.lu-theme .lu-modal__close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  line-height: 28px;
  padding: 0;
}

body.lu-theme .lu-qa {
  display: grid;
  gap: var(--lu-space-2);
  margin-top: var(--lu-space-2);
}

body.lu-theme .lu-qa details {
  border: 1px solid var(--lu-border);
  border-radius: 12px;
  background: #f8f5f2;
  padding: var(--lu-space-2);
}

body.lu-theme .lu-qa summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--lu-ink);
}

body.lu-theme .lu-qa details > div,
body.lu-theme .lu-qa details > ul {
  margin-top: var(--lu-space-2);
  color: var(--lu-muted);
  line-height: 1.5;
}

body.lu-theme .lu-progress-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lu-space-3);
  padding: var(--lu-space-3);
  margin: var(--lu-space-4) auto 0;
}

body.lu-theme .lu-progress-card__text {
  display: grid;
  gap: 6px;
}

body.lu-theme .lu-progress-card__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

body.lu-theme .lu-progress-card__meta {
  margin: 0;
  color: var(--lu-muted);
  font-size: 14px;
}

body.lu-theme .lu-progress {
  width: 180px;
  height: 10px;
  background: #efe7e2;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--lu-border);
}

body.lu-theme .lu-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--lu-primary);
  border-radius: 999px;
  transition: width 0.3s ease;
}

body.lu-theme.course-summary-page .cs-shell {
  display: grid;
  gap: var(--lu-space-4);
}

body.lu-theme.course-summary-page .cs-card {
  background: var(--lu-surface);
  border: 1px solid var(--lu-border);
  border-radius: var(--lu-radius);
  box-shadow: var(--lu-shadow);
  padding: var(--lu-space-4);
}

body.lu-theme.course-summary-page .cs-overall {
  display: grid;
  gap: var(--lu-space-3);
}

body.lu-theme.course-summary-page .cs-overall__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lu-space-3);
  flex-wrap: wrap;
}

body.lu-theme.course-summary-page .cs-overall__title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
}

body.lu-theme.course-summary-page .cs-overall__meta {
  margin: 0;
  color: var(--lu-muted);
}

body.lu-theme.course-summary-page .cs-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--lu-space-3);
}

body.lu-theme.course-summary-page .cs-metric {
  background: #f8f5f2;
  border: 1px solid var(--lu-border);
  border-radius: 12px;
  padding: var(--lu-space-3);
  display: grid;
  gap: 6px;
}

body.lu-theme.course-summary-page .cs-metric__label {
  font-size: 13px;
  color: var(--lu-muted);
}

body.lu-theme.course-summary-page .cs-metric__value {
  font-size: 20px;
  font-weight: 700;
}

body.lu-theme.course-summary-page .cs-table {
  display: grid;
  gap: var(--lu-space-3);
}

body.lu-theme.course-summary-page .cs-row {
  border: 1px solid var(--lu-border);
  border-radius: 14px;
  padding: var(--lu-space-3);
  background: #fff;
  display: grid;
  gap: var(--lu-space-3);
}

body.lu-theme.course-summary-page .cs-row__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lu-space-3);
  flex-wrap: wrap;
}

body.lu-theme.course-summary-page .cs-row__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

body.lu-theme.course-summary-page .cs-row__status {
  font-size: 13px;
  color: var(--lu-muted);
}

body.lu-theme.course-summary-page .cs-row__metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--lu-space-3);
}

body.lu-theme.course-summary-page .cs-row__metric {
  display: grid;
  gap: 6px;
}

body.lu-theme.course-summary-page .cs-row__metric span {
  font-size: 13px;
  color: var(--lu-muted);
}

body.lu-theme.course-summary-page .cs-details {
  border-top: 1px solid var(--lu-border);
  padding-top: var(--lu-space-3);
  display: grid;
  gap: var(--lu-space-2);
}

body.lu-theme.course-summary-page .cs-details-row {
  display: grid;
  grid-template-columns: minmax(140px, 1.6fr) 0.8fr 0.8fr minmax(160px, 1.2fr);
  column-gap: var(--lu-space-2);
  align-items: start;
  font-size: 13px;
  color: var(--lu-muted);
}

body.lu-theme.course-summary-page .cs-details__label {
  color: var(--lu-ink);
  font-weight: 600;
}

body.lu-theme.course-summary-page .cs-details-row--group .cs-details__label {
  font-weight: 700;
}

body.lu-theme.course-summary-page .cs-details-row--child .cs-details__label {
  padding-left: 18px;
}

body.lu-theme.course-summary-page .cs-advice__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--lu-space-3);
  flex-wrap: wrap;
}

body.lu-theme.course-summary-page .cs-advice__note {
  color: #9a3412;
  font-size: 13px;
  margin: 0;
}

body.lu-theme.course-summary-page .cs-advice__section {
  margin-top: var(--lu-space-3);
  display: grid;
  gap: var(--lu-space-2);
}

body.lu-theme.course-summary-page .cs-advice__section h3 {
  margin: 0;
  font-size: 16px;
}

body.lu-theme.course-summary-page .cs-priority-list {
  display: grid;
  gap: var(--lu-space-2);
}

body.lu-theme.course-summary-page .cs-priority {
  border: 1px solid var(--lu-border);
  border-radius: 12px;
  padding: var(--lu-space-2);
  background: #f8f5f2;
  display: grid;
  gap: 6px;
}

body.lu-theme.course-summary-page .cs-priority h4 {
  margin: 0;
  font-size: 15px;
}

body.lu-theme.course-summary-page .cs-plan {
  display: grid;
  gap: var(--lu-space-2);
}

body.lu-theme.course-summary-page .cs-plan__row {
  border: 1px dashed var(--lu-border);
  border-radius: 12px;
  padding: var(--lu-space-2);
  display: grid;
  gap: 6px;
}

body.lu-theme.course-summary-page .cs-plan__day {
  font-weight: 700;
  color: var(--lu-ink);
}

@media (max-width: 900px) {
  body.lu-theme .lu-progress-card {
    flex-direction: column;
    align-items: flex-start;
  }
  body.lu-theme.course-summary-page .cs-question {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  body.lu-theme .lu-container {
    padding: 0 var(--lu-space-3);
  }
  body.lu-theme .lu-header__inner {
    flex-wrap: wrap;
  }
  body.lu-theme .lu-hero__inner {
    align-items: flex-start;
  }
  body.lu-theme.module-page .lu-hero__actions {
    width: 100%;
  }
  body.lu-theme.module-page .lu-hero__actions .lu-btn {
    width: 100%;
  }
  body.lu-theme .lu-hero__title {
    font-size: 26px;
  }
  body.lu-theme .lu-band {
    padding: var(--lu-space-4) 0;
  }
  body.lu-theme .lu-band::before {
    top: 18px;
    height: 44px;
  }
  body.lu-theme .lu-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 900px) {
  body.lu-theme .lu-auth-split {
    grid-template-columns: 1fr;
  }
  body.lu-theme .lu-auth-visual {
    display: none;
  }
  body.lu-theme .lu-auth-panel {
    min-height: 100vh;
  }
  body.lu-theme.module-page .lu-module-layout {
    grid-template-columns: 1fr;
  }
  body.lu-theme.module-page .toc {
    position: static;
  }
  body.lu-theme .lu-feature {
    flex-direction: column;
    align-items: stretch;
  }
  body.lu-theme .lu-band:nth-child(even) .lu-feature {
    flex-direction: column;
  }
  body.lu-theme .lu-feature__copy {
    max-width: none;
  }
}