:root {
  --bg: #f7f9fb;
  --paper: #ffffff;
  --ink: #111827;
  --muted: #5f6b7a;
  --line: #dce3ea;
  --soft-line: #edf1f5;
  --emerald: #087f5b;
  --emerald-dark: #046347;
  --cobalt: #1d4ed8;
  --amber: #d97706;
  --amber-soft: #fff7e8;
  --blue-soft: #eef5ff;
  --green-soft: #eaf8f2;
  --shadow: 0 20px 50px rgba(17, 24, 39, 0.1);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui,
    sans-serif;
  line-height: 1.65;
  overflow-x: hidden;
}

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

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

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

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 50;
  transform: translateY(-160%);
  border-radius: 6px;
  background: var(--ink);
  color: white;
  padding: 10px 14px;
  font-weight: 800;
  transition: transform 180ms ease;
}

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

:focus-visible {
  outline: 3px solid rgba(29, 78, 216, 0.35);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 48px;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: var(--amber-soft);
  color: var(--ink);
  font-size: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.site-nav a {
  border-radius: 6px;
  padding: 8px 10px;
  color: #334155;
  font-size: 14px;
  font-weight: 700;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.site-nav a:hover {
  background: var(--soft-line);
  color: var(--ink);
}

.menu-button {
  display: none;
  width: 42px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 56px;
  align-items: center;
  overflow: hidden;
  min-height: min(760px, calc(100vh - 72px));
  padding: 54px 48px 46px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.88), rgba(247, 249, 251, 0.78)),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 31px,
      rgba(17, 24, 39, 0.04) 32px
    );
}

.hero-copy {
  min-width: 0;
  max-width: 620px;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(54px, 8vw, 112px);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: 0;
}

.hero-line {
  margin: 24px 0 0;
  color: #0f172a;
  font-size: clamp(26px, 3vw, 42px);
  font-weight: 850;
  line-height: 1.18;
}

.hero-text {
  max-width: 560px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
  overflow-wrap: anywhere;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-daily-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 560px;
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  padding: 12px 14px;
  color: #334155;
  font-weight: 750;
}

.hero-daily-link span {
  flex: 0 0 auto;
  border-radius: 6px;
  background: var(--green-soft);
  color: var(--emerald-dark);
  padding: 4px 8px;
  font-size: 13px;
  font-weight: 900;
}

.hero-daily-link strong {
  min-width: 0;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 7px;
  padding: 0 20px;
  font-weight: 800;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--emerald);
  color: white;
}

.button-primary:hover {
  background: var(--emerald-dark);
}

.button-secondary {
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
}

.button-secondary:hover {
  border-color: #b6c2cf;
}

.full-button {
  width: 100%;
}

.hero-media {
  position: relative;
  overflow: hidden;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.hero-media img {
  width: 100%;
  aspect-ratio: 1.25 / 1;
  object-fit: cover;
}

.quote-strip {
  position: absolute;
  right: 24px;
  bottom: 24px;
  max-width: min(440px, calc(100% - 48px));
  border-left: 5px solid var(--amber);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.92);
  padding: 16px 18px;
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.12);
}

.quote-strip p {
  margin: 0;
  color: #1f2937;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.45;
}

section {
  padding: 82px 48px;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.section-heading p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.learning-module {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.daily-section {
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(238, 245, 255, 0.84), rgba(255, 255, 255, 0.95) 46%, rgba(255, 247, 232, 0.72)),
    #ffffff;
}

.map-section {
  border-bottom: 1px solid var(--line);
  background: #fbfcfe;
}

.map-layout,
.product-layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
}

.goal-panel,
.product-list {
  display: grid;
  gap: 10px;
}

.goal-button,
.product-button,
.deep-read {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 850;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.goal-button {
  min-height: 54px;
  padding: 0 16px;
  text-align: left;
}

.goal-button.active,
.product-button.active {
  border-color: var(--cobalt);
  background: var(--blue-soft);
  color: #173b8f;
}

.roadmap-panel,
.product-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 28px;
}

.roadmap-head h3,
.product-panel h3 {
  margin: 0;
  font-size: 30px;
  line-height: 1.2;
}

.roadmap-head p,
.product-analogy {
  margin: 10px 0 0;
  color: #334155;
  font-size: 18px;
}

.roadmap-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.roadmap-steps li {
  border: 1px solid var(--soft-line);
  border-radius: var(--radius);
  background: #fbfcfe;
  padding: 16px;
}

.roadmap-steps span {
  color: var(--emerald-dark);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 900;
}

.roadmap-steps strong {
  display: block;
  margin-top: 10px;
  color: var(--ink);
  font-size: 18px;
  line-height: 1.25;
}

.roadmap-steps p {
  margin: 8px 0 0;
  color: var(--muted);
}

.product-section {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.product-button {
  display: grid;
  gap: 3px;
  min-height: 70px;
  padding: 12px 14px;
  text-align: left;
}

.product-button span {
  font-size: 18px;
}

.product-button small {
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.product-panel dl,
.deep-panel dl {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
}

.product-panel div,
.deep-panel div {
  border-top: 1px solid var(--soft-line);
  padding-top: 12px;
}

.product-panel dt,
.deep-panel dt {
  color: var(--emerald-dark);
  font-weight: 900;
}

.product-panel dd,
.deep-panel dd {
  margin: 4px 0 0;
  color: #334155;
}

.daily-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 18px;
  align-items: stretch;
}

.daily-card,
.habit-panel,
.concept-card,
.module-notes article,
.path-card,
.term-card,
.translation-panel,
.risk-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
}

.daily-card {
  min-height: 420px;
  padding: 28px;
  box-shadow: 0 18px 42px rgba(8, 127, 91, 0.08);
}

.daily-card-top,
.term-card-top,
.api-footnote {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.daily-card-top span,
.daily-card-top small,
.api-footnote,
.daily-risk span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 900;
}

.daily-card h3 {
  margin: 18px 0 0;
  font-size: clamp(36px, 6vw, 64px);
  line-height: 1;
  letter-spacing: 0;
}

.daily-card > strong {
  display: block;
  margin-top: 18px;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.35;
}

.daily-card > p {
  max-width: 820px;
  margin: 14px 0 0;
  color: #334155;
  font-size: 18px;
}

.daily-risk,
.daily-note,
.habit-result,
.scenario-result {
  margin-top: 18px;
  border-radius: var(--radius);
  background: #fbfcfe;
  padding: 16px;
}

.daily-risk {
  border-left: 5px solid var(--amber);
}

.daily-risk p,
.scenario-result p {
  margin: 6px 0 0;
  color: var(--muted);
}

.daily-note {
  border: 1px solid var(--soft-line);
  color: #334155;
  font-weight: 750;
}

.daily-quiz {
  margin-top: 20px;
  border-top: 1px solid var(--soft-line);
  padding-top: 18px;
}

.daily-quiz h4 {
  margin: 0;
  font-size: 18px;
}

.daily-quiz p {
  margin: 8px 0 0;
  color: #334155;
}

.daily-quiz-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.daily-quiz-options button,
.save-term {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 850;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.daily-quiz-options button {
  min-height: 44px;
  padding: 9px 12px;
}

.daily-quiz-options button.correct {
  border-color: var(--emerald);
  background: var(--green-soft);
  color: var(--emerald-dark);
}

.daily-quiz-options button.wrong {
  border-color: #ef4444;
  background: #fff1f2;
  color: #991b1b;
}

.daily-quiz-feedback {
  min-height: 26px;
  font-weight: 850;
}

.api-footnote {
  margin-top: 18px;
  border-top: 1px solid var(--soft-line);
  padding-top: 14px;
}

.habit-panel {
  padding: 24px;
}

.habit-panel h3 {
  margin: 0;
  font-size: 24px;
}

.habit-panel label,
.scenario-card label {
  display: block;
  margin-top: 18px;
  color: #334155;
  font-weight: 850;
}

.habit-panel select,
.scenario-card select {
  width: 100%;
  min-height: 46px;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  color: var(--ink);
  padding: 0 12px;
  font-weight: 750;
}

.habit-result {
  color: #334155;
  font-weight: 750;
}

.loading-line {
  height: 20px;
  width: 70%;
  border-radius: 999px;
  background: linear-gradient(90deg, #edf1f5, #f9fafb, #edf1f5);
}

.loading-line.short {
  width: 46%;
  margin-top: 14px;
}

.module-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 0.85fr;
  gap: 24px;
  align-items: stretch;
}

.concept-card {
  padding: 28px;
  box-shadow: 0 18px 40px rgba(29, 78, 216, 0.08);
}

.concept-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--soft-line);
  padding-bottom: 18px;
}

.concept-title {
  font-size: 42px;
  font-weight: 900;
  letter-spacing: 0;
}

.concept-code {
  color: var(--cobalt);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  font-weight: 800;
}

.level-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 22px;
}

.level-tab,
.filter-button,
.news-item,
.quiz-options button {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font-weight: 800;
  transition:
    background 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.level-tab {
  padding: 12px 10px;
}

.level-tab.active,
.filter-button.active {
  border-color: var(--emerald);
  background: var(--green-soft);
  color: var(--emerald-dark);
}

.level-panel {
  margin-top: 24px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--blue-soft), #ffffff 58%, var(--amber-soft));
  padding: 24px;
}

.level-panel h3 {
  margin: 0;
  font-size: 26px;
}

.level-panel p {
  margin: 12px 0 0;
  color: #334155;
  font-size: 18px;
}

.level-panel ul {
  margin: 18px 0 0;
  padding-left: 20px;
  color: #475569;
}

.module-notes {
  display: grid;
  gap: 14px;
}

.module-notes article {
  padding: 22px;
}

.module-notes h3,
.path-card h3,
.term-card h3,
.risk-card h3,
.translation-panel h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.module-notes p,
.path-card p,
.term-card p,
.risk-card p {
  margin: 10px 0 0;
  color: var(--muted);
}

.paths-section {
  border-bottom: 1px solid var(--line);
  background: #fbfcfe;
}

.path-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.path-card {
  padding: 22px;
  min-height: 260px;
}

.path-card span {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--cobalt);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 900;
}

.path-card a {
  display: inline-flex;
  margin-top: 20px;
  color: var(--emerald-dark);
  font-weight: 900;
}

.dictionary-section {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.dictionary-toolbar {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 14px;
  align-items: center;
  margin-bottom: 18px;
}

#term-search {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fbfcfe;
  padding: 0 16px;
  color: var(--ink);
}

#term-search:focus {
  border-color: var(--cobalt);
  outline: 3px solid rgba(29, 78, 216, 0.13);
}

.term-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-button {
  min-height: 42px;
  padding: 0 14px;
}

.dictionary-stats {
  margin: -2px 0 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

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

.term-card {
  padding: 22px;
}

.term-card-top {
  margin-bottom: 12px;
}

.save-term {
  min-height: 32px;
  padding: 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.save-term.saved {
  border-color: var(--emerald);
  background: var(--green-soft);
  color: var(--emerald-dark);
}

.term-card strong {
  display: block;
  margin-top: 14px;
  color: var(--ink);
}

.term-card small {
  display: inline-block;
  color: var(--amber);
  font-weight: 900;
}

.term-actions {
  margin-top: 18px;
}

.deep-read {
  min-height: 38px;
  padding: 0 12px;
  color: var(--cobalt);
}

.deep-panel {
  margin-top: 16px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #fbfcfe, var(--blue-soft));
  padding: 16px;
}

.news-section {
  background:
    linear-gradient(180deg, #f7f9fb, #ffffff),
    repeating-linear-gradient(90deg, transparent 0, transparent 35px, rgba(29, 78, 216, 0.04) 36px);
  border-bottom: 1px solid var(--line);
}

.news-layout {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 18px;
}

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

.news-item {
  display: grid;
  gap: 4px;
  min-height: 86px;
  padding: 16px;
  text-align: left;
}

.news-item span {
  color: var(--muted);
  font-size: 14px;
}

.news-item strong {
  font-size: 18px;
}

.news-item.active {
  border-color: var(--cobalt);
  background: var(--blue-soft);
}

.translation-panel {
  padding: 28px;
}

.translation-panel h3 {
  font-size: 30px;
}

.translation-panel dl {
  display: grid;
  gap: 14px;
  margin: 20px 0 0;
}

.translation-panel div {
  border-top: 1px solid var(--soft-line);
  padding-top: 14px;
}

.translation-panel dt {
  color: var(--emerald-dark);
  font-weight: 900;
}

.translation-panel dd {
  margin: 4px 0 0;
  color: #334155;
  font-size: 18px;
}

.risk-section {
  background: var(--paper);
}

.risk-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.risk-card {
  padding: 26px;
}

.risk-card label {
  display: block;
  margin-top: 18px;
  color: #334155;
  font-weight: 800;
}

.scenario-result strong {
  color: var(--ink);
  font-size: 18px;
}

#leverage-range {
  width: 100%;
  margin-top: 18px;
  accent-color: var(--emerald);
}

.risk-number {
  color: var(--ink) !important;
  font-size: 28px;
  font-weight: 900;
}

.quiz-question {
  color: var(--ink) !important;
  font-size: 18px;
  font-weight: 800;
}

.quiz-options {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.quiz-options button {
  min-height: 48px;
  padding: 10px 14px;
  text-align: left;
}

.quiz-options button.correct {
  border-color: var(--emerald);
  background: var(--green-soft);
  color: var(--emerald-dark);
}

.quiz-options button.wrong {
  border-color: #ef4444;
  background: #fff1f2;
  color: #991b1b;
}

.quiz-feedback {
  min-height: 28px;
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px 48px;
  border-top: 1px solid #0f172a;
  background: #111827;
  color: #d1d5db;
}

.site-footer strong {
  color: #ffffff;
  font-size: 18px;
}

.site-footer p {
  margin: 4px 0 0;
}

.site-footer a {
  color: #ffffff;
  font-weight: 900;
}

@media (max-width: 1100px) {
  .site-header {
    padding: 0 24px;
  }

  .menu-button {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 24px;
    left: 24px;
    display: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--paper);
    padding: 12px;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: grid;
  }

  .hero-section,
  .daily-layout,
  .map-layout,
  .product-layout,
  .module-grid,
  .news-layout {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: 0;
    padding: 58px 24px 48px;
  }

  section {
    padding: 64px 24px;
  }

  .path-list,
  .term-grid,
  .roadmap-steps,
  .risk-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .dictionary-toolbar {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .site-header {
    min-height: 64px;
    padding: 0 16px;
  }

  .brand {
    font-size: 18px;
  }

  .site-nav {
    top: 64px;
    right: 16px;
    left: 16px;
    grid-template-columns: 1fr;
  }

  .hero-section {
    padding: 42px 16px 36px;
  }

  .hero-copy h1 {
    font-size: 52px;
  }

  .hero-line {
    font-size: 26px;
    overflow-wrap: anywhere;
  }

  .hero-text,
  .section-heading p,
  .level-panel p,
  .translation-panel dd {
    font-size: 16px;
  }

  .hero-actions,
  .term-filters {
    flex-direction: column;
  }

  .hero-daily-link {
    display: flex;
    width: 100%;
    align-items: flex-start;
  }

  .button,
  .filter-button {
    width: 100%;
  }

  .quote-strip {
    position: static;
    max-width: none;
    border-radius: 0;
    box-shadow: none;
  }

  section {
    padding: 54px 16px;
  }

  .level-tabs,
  .daily-quiz-options,
  .roadmap-steps,
  .path-list,
  .term-grid,
  .risk-grid {
    grid-template-columns: 1fr;
  }

  .concept-card,
  .daily-card,
  .habit-panel,
  .translation-panel,
  .risk-card {
    padding: 20px;
  }

  .concept-title {
    font-size: 34px;
  }

  .site-footer {
    flex-direction: column;
    padding: 28px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}