:root {
  --navy-1000: #020b14;
  --navy-950: #03101e;
  --navy-900: #061526;
  --navy-850: #082039;
  --navy-800: #0a2947;
  --ink: #f7fbff;
  --ink-soft: #a9bfd2;
  --paper: #fbfaf6;
  --sky: #8bd8ff;
  --blue: #3978ff;
  --gold: #f4bf47;
  --line: rgba(139, 216, 255, .2);
  --surface: rgba(7, 29, 51, .9);
  --surface-soft: rgba(10, 41, 71, .68);
  --field: rgba(3, 16, 30, .92);
  --shadow: 0 28px 80px rgba(0, 7, 15, .3);
  --content: 1180px;
  --gutter: clamp(18px, 4vw, 64px);
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "Segoe UI", "Noto Sans", "Noto Sans SC", "Noto Sans TC",
    Helvetica, Arial, sans-serif;
}

html[data-theme="day"] {
  --ink: #07172b;
  --ink-soft: #587088;
  --line: rgba(17, 82, 126, .18);
  --surface: rgba(247, 252, 255, .94);
  --surface-soft: rgba(229, 244, 255, .78);
  --field: rgba(255, 255, 255, .95);
  --shadow: 0 28px 80px rgba(45, 103, 145, .15);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--navy-950);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 86% -8%, rgba(43, 103, 222, .28), transparent 35%),
    radial-gradient(circle at 4% 86%, rgba(91, 204, 255, .11), transparent 28%),
    linear-gradient(145deg, #020c17 0%, #061b2d 51%, #061526 100%);
}

html[data-theme="day"] body {
  background:
    radial-gradient(circle at 82% -12%, rgba(62, 153, 222, .2), transparent 38%),
    radial-gradient(circle at 3% 90%, rgba(80, 191, 244, .16), transparent 30%),
    linear-gradient(145deg, #f5fbff 0%, #e4f4ff 52%, #d8effe 100%);
}

button,
input,
select {
  font: inherit;
}

button,
a,
summary,
select {
  -webkit-tap-highlight-color: transparent;
}

button,
summary,
select {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--navy-950);
  background: var(--paper);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.course-site-header {
  position: relative;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 16, 30, .86);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

html[data-theme="day"] .course-site-header {
  background: rgba(241, 250, 255, .88);
}

.course-site-header-inner {
  width: min(100%, 1540px);
  min-height: 78px;
  margin: 0 auto;
  padding: 10px var(--gutter);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
}

.course-brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.course-brand-mark {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 13px;
}

.course-brand-mark img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.course-brand-mark .brand-mark-day {
  display: none;
}

html[data-theme="day"] .course-brand-mark .brand-mark-night {
  display: none;
}

html[data-theme="day"] .course-brand-mark .brand-mark-day {
  display: block;
}

.course-brand-copy {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.course-brand-copy strong {
  font-size: 19px;
  letter-spacing: -.035em;
}

.course-brand-copy small {
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 8px;
  font-weight: 760;
  letter-spacing: .16em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.course-primary-navigation {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(16px, 2.2vw, 34px);
  overflow-x: auto;
  scrollbar-width: none;
}

.course-primary-navigation::-webkit-scrollbar {
  display: none;
}

.course-primary-navigation a {
  min-height: 44px;
  position: relative;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  padding: 0 2px;
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 760;
  text-decoration: none;
  white-space: nowrap;
}

.course-primary-navigation a::after {
  position: absolute;
  right: 50%;
  bottom: 3px;
  left: 50%;
  height: 2px;
  content: "";
  border-radius: 999px;
  background: linear-gradient(90deg, var(--blue), var(--sky), var(--gold));
  opacity: 0;
  transition: right .2s ease, left .2s ease, opacity .2s ease;
}

.course-primary-navigation a:hover,
.course-primary-navigation a[aria-current="page"] {
  color: var(--ink);
}

.course-primary-navigation a:hover::after,
.course-primary-navigation a[aria-current="page"]::after {
  right: 0;
  left: 0;
  opacity: 1;
}

.course-header-controls {
  display: flex;
  align-items: center;
  justify-content: end;
  gap: 8px;
}

.course-theme-control {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .035);
}

.course-theme-control button {
  min-width: 38px;
  min-height: 36px;
  padding: 0 11px;
  border: 0;
  border-radius: 999px;
  color: var(--ink-soft);
  background: transparent;
}

.course-theme-control button[aria-pressed="true"] {
  color: var(--navy-950);
  background: var(--paper);
}

.course-language-control {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.course-language-control select {
  max-width: 92px;
  border: 0;
  color: var(--ink);
  background: transparent;
}

.course-language-control option {
  color: #07172b;
}

.course-main {
  width: min(100%, var(--content));
  margin: 0 auto;
  padding: 0 var(--gutter) 90px;
}

.course-search-stage {
  min-height: calc(100svh - 79px);
  display: grid;
  align-content: center;
  justify-items: center;
  gap: clamp(28px, 4vw, 44px);
  padding: 76px 0 110px;
  transition: min-height .32s ease, padding .32s ease;
}

body.has-course-results .course-search-stage {
  min-height: 0;
  padding: clamp(68px, 9vw, 118px) 0 52px;
}

.course-search-stage h1 {
  max-width: 980px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(44px, 7.4vw, 92px);
  font-weight: 790;
  letter-spacing: -.065em;
  line-height: .98;
  text-align: center;
  text-wrap: balance;
}

.course-search-form {
  width: min(100%, 780px);
}

.course-search-control {
  min-height: 64px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 7px 7px 7px 20px;
  border: 1px solid rgba(139, 216, 255, .3);
  border-radius: 999px;
  background: var(--field);
  box-shadow: 0 18px 58px rgba(0, 8, 17, .2), inset 0 1px 0 rgba(255, 255, 255, .045);
}

html[data-theme="day"] .course-search-control {
  border-color: rgba(15, 80, 126, .22);
  box-shadow: 0 18px 52px rgba(56, 109, 144, .14);
}

.course-search-control svg {
  width: 22px;
  height: 22px;
  color: var(--sky);
}

.course-search-control input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 0 6px;
  border: 0;
  outline: 0;
  color: var(--ink);
  background: transparent;
  font-size: 17px;
}

.course-search-control input::placeholder {
  color: color-mix(in srgb, var(--ink-soft) 82%, transparent);
}

.course-search-control button {
  min-height: 50px;
  padding: 0 24px;
  border: 0;
  border-radius: 999px;
  color: var(--navy-950);
  background: linear-gradient(135deg, #9ce3ff, #f4c75d);
  box-shadow: 0 10px 28px rgba(26, 118, 181, .22);
  font-weight: 790;
}

.course-search-control button:hover:not(:disabled) {
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.course-search-control button:disabled {
  cursor: wait;
  opacity: .72;
}

.course-results {
  padding: 0 0 42px;
}

.course-results[hidden] {
  display: none !important;
}

.course-results-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.course-results-heading h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: -.045em;
}

.course-results-heading p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.course-result-list {
  display: grid;
  gap: 14px;
}

.course-result-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: 0 16px 46px rgba(0, 8, 17, .12);
}

.course-result-card summary {
  min-height: 116px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  list-style: none;
}

.course-result-card summary::-webkit-details-marker {
  display: none;
}

.course-result-summary {
  min-width: 0;
  display: grid;
  gap: 8px;
}

.course-result-kicker {
  color: var(--sky);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.course-result-title {
  margin: 0;
  color: var(--ink);
  font-size: clamp(20px, 2.4vw, 28px);
  letter-spacing: -.025em;
}

.course-result-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.course-result-chevron {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--sky);
  transition: transform .2s ease;
}

.course-result-card[open] .course-result-chevron {
  transform: rotate(45deg);
}

.course-result-details {
  display: grid;
  gap: 22px;
  padding: 0 28px 28px;
}

.course-detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.course-detail-item {
  min-width: 0;
  padding: 17px 18px;
  border-radius: 18px;
  background: var(--surface-soft);
}

.course-detail-item span {
  display: block;
  margin-bottom: 7px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.course-detail-item strong {
  display: block;
  overflow-wrap: anywhere;
  font-size: 14px;
  line-height: 1.45;
}

.course-section-list {
  display: grid;
  gap: 8px;
}

.course-section-row {
  min-height: 52px;
  display: grid;
  grid-template-columns: minmax(90px, .6fr) minmax(150px, 1.2fr) minmax(140px, .8fr);
  align-items: center;
  gap: 16px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13px;
}

.course-section-row strong {
  color: var(--ink);
}

.course-result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.course-action {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
  font-size: 13px;
  font-weight: 760;
  text-decoration: none;
}

.course-action-primary {
  border-color: transparent;
  color: var(--navy-950);
  background: var(--sky);
}

.course-data-note,
.course-empty-state {
  padding: 24px 26px;
  border-radius: 22px;
  color: var(--ink-soft);
  background: var(--surface-soft);
  line-height: 1.65;
}

.course-empty-state {
  text-align: center;
}

.assistant-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr);
  gap: 28px;
  align-items: start;
}

.assistant-recommendation {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 23px 26px;
  border-bottom: 1px solid var(--line);
}

.assistant-recommendation:first-child {
  border-radius: 24px 24px 0 0;
}

.assistant-recommendation:last-child {
  border-bottom: 0;
}

.assistant-recommendation-copy {
  min-width: 0;
  display: grid;
  gap: 7px;
}

.assistant-recommendation h3 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -.02em;
}

.assistant-recommendation p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.5;
}

.assistant-recommendation .recommendation-reason {
  color: var(--sky);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.assistant-add-button {
  min-height: 44px;
  padding: 0 18px;
  border: 0;
  border-radius: 999px;
  color: var(--navy-950);
  background: var(--sky);
  font-weight: 780;
  white-space: nowrap;
}

.assistant-add-button[data-selected="true"] {
  color: var(--ink);
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line);
}

.assistant-shortlist {
  position: sticky;
  top: 22px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.assistant-shortlist h2 {
  margin: 0 0 18px;
  font-size: 25px;
  letter-spacing: -.035em;
}

.assistant-shortlist-list {
  display: grid;
  gap: 13px;
}

.assistant-shortlist-empty {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.55;
}

.assistant-shortlist-item {
  display: grid;
  gap: 10px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.assistant-shortlist-item:last-child {
  border-bottom: 0;
}

.assistant-shortlist-item strong {
  line-height: 1.35;
}

.assistant-shortlist-item label {
  display: grid;
  gap: 6px;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 760;
}

.assistant-shortlist-item select {
  width: 100%;
  min-height: 44px;
  padding: 0 36px 0 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  background: var(--field);
}

.assistant-remove {
  width: max-content;
  padding: 0;
  border: 0;
  color: var(--sky);
  background: transparent;
  font-weight: 760;
}

.assistant-notice {
  grid-column: 1 / -1;
}

@media (max-width: 1040px) {
  .course-site-header-inner {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 12px;
  }

  .course-brand-copy small,
  .course-theme-control .theme-label {
    display: none;
  }

  .course-primary-navigation {
    justify-content: start;
  }
}

@media (max-width: 820px) {
  .course-site-header-inner {
    min-height: 124px;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    padding-top: 9px;
    padding-bottom: 8px;
  }

  .course-brand {
    grid-column: 1;
    grid-row: 1;
  }

  .course-header-controls {
    grid-column: 2;
    grid-row: 1;
  }

  .course-primary-navigation {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: start;
    padding-right: 12px;
  }

  .course-search-stage {
    min-height: calc(100svh - 125px);
  }

  .assistant-workspace {
    grid-template-columns: 1fr;
  }

  .assistant-shortlist {
    position: static;
  }
}

@media (max-width: 680px) {
  .course-theme-control {
    display: none;
  }

  .course-main {
    padding-right: 18px;
    padding-left: 18px;
  }

  .course-search-stage,
  body.has-course-results .course-search-stage {
    padding-top: 62px;
  }

  .course-search-stage h1 {
    font-size: clamp(42px, 14vw, 62px);
  }

  .course-search-control {
    min-height: 58px;
    grid-template-columns: auto minmax(0, 1fr);
    padding-right: 12px;
  }

  .course-search-control input {
    font-size: 16px;
  }

  .course-search-control button {
    width: 100%;
    min-height: 48px;
    grid-column: 1 / -1;
  }

  .course-results-heading {
    display: grid;
  }

  .course-result-card summary,
  .course-result-details {
    padding-right: 20px;
    padding-left: 20px;
  }

  .course-detail-grid {
    grid-template-columns: 1fr;
  }

  .course-section-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .assistant-recommendation {
    grid-template-columns: 1fr;
  }

  .assistant-add-button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (forced-colors: active) {
  .course-result-card,
  .assistant-shortlist,
  .course-search-control {
    border: 1px solid CanvasText;
  }
}