:root {
  color-scheme: dark;
  --bg: #0c1115;
  --panel: #111b20;
  --line: #283b40;
  --ink: #e1ebe7;
  --muted: #8da3aa;
  --mint: #a0dfce;
  --gold: #e0be8d;
  font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  font-synthesis: none;
  color: var(--ink);
  background: var(--bg);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background:
    radial-gradient(ellipse at 78% 8%, #29493f26, transparent 42%), var(--bg);
}
a {
  color: inherit;
  text-decoration: none;
}
button,
input {
  font: inherit;
}
button {
  cursor: pointer;
}
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 5px;
}
button {
  color: inherit;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 30px;
}
.skip {
  position: fixed;
  left: 20px;
  top: -70px;
  z-index: 5;
  background: var(--mint);
  color: var(--bg);
  padding: 12px;
}
.skip:focus {
  top: 12px;
}
.map-header {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  border-bottom: 1px solid #25373b;
  background: #0e171bc9;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 16px;
  font-weight: 650;
}
.brand img {
  border-radius: 0;
}
.brand > span {
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
  border-left: 1px solid #3b4d51;
  padding-left: 16px;
  margin-left: 6px;
}
.map-header nav {
  display: flex;
  align-items: center;
  gap: 27px;
  font-size: 11px;
  color: var(--muted);
}
.map-header nav a:hover {
  color: var(--mint);
}
.preview-indicator {
  display: flex;
  gap: 8px;
  align-items: center;
  border: 1px solid #38584a;
  padding: 7px 11px;
  border-radius: 30px;
  color: #adc6b6;
  font-size: 10px;
}
.preview-indicator i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--mint);
}
main,
footer {
  width: min(1180px, calc(100% - 100px));
  margin: 0 auto;
}
.map-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 56px 0 40px;
}
.eyebrow {
  font-size: 9px;
  letter-spacing: 2.5px;
  color: #94b0a3;
  margin: 0 0 24px;
}
.hero-copy h1 {
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 500;
  letter-spacing: -1.8px;
  line-height: 1.45;
  margin: 0;
}
.hero-copy h1 em {
  font-style: normal;
  color: #a7c4b6;
}
.hero-description {
  font-size: 12px;
  line-height: 2;
  color: var(--muted);
  margin: 22px 0;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 28px;
}
.hero-actions button {
  background: #a0dfce13;
  color: #c8e8dc;
  border: 1px solid #75988b75;
  border-radius: 6px;
  padding: 12px 17px;
  font-size: 12px;
  display: flex;
  gap: 26px;
  align-items: center;
}
.hero-actions button:hover {
  background: #a0dfce25;
}
.hero-actions > span {
  font-size: 9px;
  color: #708b92;
}
.hero-scene {
  padding: 34px 0 6px;
}
.hero-scene svg {
  width: 100%;
  overflow: visible;
}
.hero-scene text {
  fill: #7e999d;
  font-size: 10px;
  letter-spacing: 1.1px;
}
.hero-scene .scene-caption {
  font-size: 11px;
  letter-spacing: 0.5px;
  fill: #9cbbb0;
}
.map-summary {
  display: flex;
  gap: 44px;
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.map-summary > div {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.map-summary strong {
  font-size: 28px;
  font-weight: 400;
  color: #c7ded3;
  font-variant-numeric: tabular-nums;
}
.map-summary span {
  font-size: 10px;
  color: var(--muted);
}
.map-summary p {
  margin: 0 0 0 auto;
  font-size: 10px;
  line-height: 1.9;
  color: #829b9e;
}
.path-section {
  padding: 31px 0 39px;
}
.path-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 15px;
}
.path-heading h2 {
  font-size: 15px;
  font-weight: 500;
  margin: 0;
}
.path-heading > span {
  color: #7e979d;
  font-size: 10px;
}
.learning-paths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.learning-path {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 17px 19px;
  text-align: left;
  background: #14212760;
  border: 1px solid #2b3f44;
  border-radius: 8px;
  transition:
    background 0.2s,
    border-color 0.2s;
}
.learning-path:hover,
.learning-path[aria-pressed="true"] {
  background: #a0dfce10;
  border-color: #6d9886;
}
.path-index {
  font-family: ui-monospace, monospace;
  font-size: 10px;
  color: #80a696;
}
.learning-path strong {
  display: block;
  font-size: 13px;
  font-weight: 500;
}
.learning-path small {
  display: block;
  font-size: 10px;
  color: #839fa6;
  margin-top: 6px;
}
.path-arrow {
  margin-left: auto;
  color: #9abaad;
  font-size: 15px;
}
.browse-section {
  scroll-margin-top: 20px;
}
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.view-filters {
  display: flex;
  gap: 5px;
  background: #101c21;
  border: 1px solid #263a40;
  border-radius: 7px;
  padding: 4px;
}
.view-filters button {
  border: 0;
  background: transparent;
  padding: 9px 19px;
  color: #8fa6ae;
  border-radius: 4px;
  font-size: 11px;
}
.view-filters button[aria-pressed="true"] {
  background: #273b38;
  color: #d0e6da;
}
.course-search {
  display: flex;
  align-items: center;
  gap: 9px;
  border-bottom: 1px solid #385052;
  padding: 7px 3px;
  color: #7f999d;
}
.course-search > span {
  font-size: 22px;
}
.course-search input {
  background: transparent;
  border: 0;
  color: var(--ink);
  width: 216px;
  font-size: 11px;
  padding: 7px 0;
}
.course-search input::placeholder {
  color: #69878e;
}
.filter-result {
  font-size: 10px;
  color: #6f8b93;
  margin: 16px 0 30px;
}
.section-heading {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 29px 0 20px;
}
.section-emblem {
  width: 43px;
  height: 34px;
  color: #92b9a8;
}
.section-emblem svg {
  width: 43px;
  height: 32px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
}
.section-emblem .solid {
  fill: currentColor;
  stroke: none;
}
.section-heading > div > p {
  font-size: 8px;
  letter-spacing: 2px;
  color: #74958a;
  margin: 0 0 5px;
}
.section-heading h2 {
  font-size: 19px;
  font-weight: 500;
  margin: 0;
}
.section-heading h2 span {
  font-size: 10px;
  color: #718d94;
  margin-left: 14px;
  font-weight: 400;
}
.section-description {
  margin-left: auto;
  color: #82999e;
  font-size: 11px;
}
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 15px;
}
.course-section + .course-section {
  margin-top: 40px;
}
.lesson-card {
  display: flex;
  flex-direction: column;
  min-height: 183px;
  padding: 20px 20px 15px;
  background: linear-gradient(135deg, #16232990, #111a20);
  border: 1px solid #293e43;
  border-radius: 9px;
  transition:
    border-color 0.2s,
    background 0.2s,
    transform 0.2s;
}
.lesson-card[href]:hover {
  border-color: #6c9385;
  background: #172824;
  transform: translateY(-2px);
}
.card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-id {
  font-size: 9px;
  letter-spacing: 1px;
  font-family: ui-monospace, monospace;
  color: #758f96;
}
.course-status {
  font-size: 9px;
  color: #8caaa0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.course-status.new {
  color: #bde4cd;
}
.course-status.new:before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #a0dfce;
}
.course-status.classic {
  color: #bea989;
}
.course-status.planned {
  color: #829296;
}
.card-title {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 14px;
}
.card-title h3 {
  font-size: 15px;
  line-height: 1.7;
  font-weight: 500;
  letter-spacing: -0.2px;
  margin: 0;
}
.card-title > span {
  margin-left: auto;
  color: #a1beb2;
  font-size: 14px;
  flex-shrink: 0;
}
.lesson-card > p {
  font-size: 11px;
  line-height: 1.85;
  color: #8ba3aa;
  margin: 10px 0 17px;
}
.card-bottom {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 15px;
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid #26393d;
  font-size: 9px;
  color: #79949d;
}
.card-bottom > span:first-child {
  color: #9dafaa;
  white-space: nowrap;
}
.card-bottom > span:last-child {
  text-align: right;
}
.lesson-card.planned {
  background: #10191d60;
  border-style: dashed;
  opacity: 0.8;
}
.planned .card-title h3 {
  color: #9caeb0;
}
.planned .card-title > span {
  color: #647e83;
}
.empty-state {
  padding: 65px 0;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
.empty-state button {
  border: 1px solid #587b6c;
  background: transparent;
  border-radius: 5px;
  padding: 9px 15px;
  font-size: 11px;
  margin-top: 15px;
}
.map-note {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 28px;
  margin: 48px 0 34px;
  background: #14231e66;
  border: 1px solid #354f433f;
  border-radius: 9px;
}
.note-orbit {
  border: 1px solid #506c5e;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: #adcebd;
}
.map-note strong {
  font-size: 13px;
  font-weight: 500;
  color: #b8d0c3;
}
.map-note p {
  font-size: 11px;
  color: #819c95;
  margin: 7px 0 0;
  line-height: 1.8;
}
footer {
  display: flex;
  justify-content: space-between;
  padding: 24px 0 30px;
  border-top: 1px solid var(--line);
  font-size: 9px;
  letter-spacing: 1px;
  color: #78918f;
}
noscript {
  display: block;
  text-align: center;
  padding: 20px;
  color: var(--muted);
  font-size: 12px;
}
@media (max-width: 1050px) {
  main,
  footer {
    width: calc(100% - 60px);
  }
  .map-hero {
    gap: 20px;
  }
  .hero-actions {
    flex-wrap: wrap;
  }
  .map-summary {
    gap: 24px;
  }
  .map-summary p {
    display: none;
  }
  .course-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .learning-path {
    padding: 15px 12px;
    gap: 10px;
  }
  .path-heading > span {
    display: none;
  }
}
@media (max-width: 650px) {
  main,
  footer {
    width: calc(100% - 32px);
    min-width: 0;
  }
  .map-header {
    padding: 0 16px;
    height: 64px;
  }
  .brand {
    min-height: 44px;
  }
  .map-header nav > a,
  .brand > span {
    display: none;
  }
  .map-hero {
    grid-template-columns: minmax(0, 1fr);
    padding: 32px 0 28px;
  }
  .hero-scene {
    display: none;
  }
  .eyebrow {
    margin-bottom: 20px;
    letter-spacing: 1.7px;
    line-height: 1.8;
  }
  .hero-copy h1 {
    font-size: clamp(30px, 8.4vw, 36px);
    letter-spacing: -1px;
    line-height: 1.45;
  }
  .hero-description {
    font-size: 13px;
    line-height: 1.9;
    margin: 18px 0;
  }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
  }
  .hero-actions button {
    min-height: 48px;
    font-size: 14px;
  }
  .hero-actions > span {
    font-size: 11px;
    line-height: 1.7;
  }
  .learning-paths {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }
  .learning-path {
    min-height: 78px;
    padding: 15px 16px;
    gap: 14px;
  }
  .learning-path > span:nth-child(2) {
    min-width: 0;
  }
  .path-index,
  .path-arrow {
    flex-shrink: 0;
  }
  .learning-path strong {
    font-size: 15px;
    line-height: 1.5;
  }
  .learning-path small {
    font-size: 12px;
    line-height: 1.5;
    margin-top: 4px;
  }
  .map-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    padding: 21px 0;
  }
  .map-summary > div {
    min-width: 0;
    flex-direction: column;
    gap: 5px;
  }
  .map-summary span {
    font-size: 11px;
    line-height: 1.5;
  }
  .path-section {
    padding: 28px 0 30px;
  }
  .path-heading h2 {
    font-size: 16px;
    line-height: 1.6;
  }
  .filter-bar {
    align-items: stretch;
    flex-direction: column;
    gap: 12px;
  }
  .view-filters {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 3px;
  }
  .view-filters button {
    min-width: 0;
    min-height: 44px;
    padding: 10px 6px;
    font-size: 13px;
    line-height: 1.5;
  }
  .course-search {
    min-width: 0;
    min-height: 48px;
    padding: 0 4px;
  }
  .course-search > span {
    flex-shrink: 0;
  }
  .course-search input {
    flex: 1;
    min-width: 0;
    width: 0;
    min-height: 46px;
    font-size: 16px;
    line-height: 1.5;
  }
  .filter-result {
    margin: 14px 0 24px;
    font-size: 12px;
    line-height: 1.7;
  }
  .course-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }
  .section-heading {
    gap: 12px;
    margin: 24px 0 16px;
  }
  .section-emblem {
    flex-shrink: 0;
  }
  .section-heading h2 span {
    font-size: 12px;
    margin-left: 12px;
  }
  .section-description {
    display: none;
  }
  .lesson-card {
    min-width: 0;
    min-height: 0;
    padding: 18px 18px 16px;
    overflow-wrap: anywhere;
  }
  .card-top {
    gap: 12px;
  }
  .card-id,
  .course-status {
    font-size: 11px;
    line-height: 1.5;
  }
  .card-title {
    margin-top: 12px;
  }
  .card-title h3 {
    min-width: 0;
    font-size: 17px;
    line-height: 1.65;
  }
  .lesson-card > p {
    font-size: 13px;
    line-height: 1.85;
    margin: 9px 0 16px;
  }
  .card-bottom {
    align-items: flex-start;
    gap: 12px;
    font-size: 11px;
    line-height: 1.75;
  }
  .card-bottom > span:first-child {
    flex-shrink: 0;
  }
  .card-bottom > span:last-child {
    min-width: 0;
  }
  .empty-state {
    padding: 42px 12px;
    line-height: 1.8;
  }
  .empty-state button {
    min-height: 44px;
    font-size: 13px;
  }
  .map-note {
    align-items: flex-start;
    gap: 12px;
    padding: 18px;
    margin: 32px 0 26px;
  }
  .note-orbit {
    flex-shrink: 0;
  }
  .map-note > div {
    min-width: 0;
  }
  .map-note strong {
    font-size: 14px;
    line-height: 1.6;
  }
  .map-note p {
    font-size: 12px;
    line-height: 1.85;
  }
  footer {
    flex-direction: column;
    font-size: 10px;
    line-height: 1.7;
    gap: 8px;
    padding: 22px 0 26px;
  }
  .hero-actions button,
  .learning-path,
  .view-filters button,
  .empty-state button,
  .lesson-card {
    touch-action: manipulation;
    -webkit-tap-highlight-color: #a0dfce18;
  }
}
@media (hover: none) {
  .lesson-card[href]:hover {
    transform: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .lesson-card,
  .learning-path {
    transition: none;
  }
  .lesson-card[href]:hover {
    transform: none;
  }
}