:root {
  color-scheme: light;
  --ink: #16202a;
  --muted: #5b6570;
  --line: #d8ded9;
  --paper: #fbf8f1;
  --panel: #ffffff;
  --sage: #5c786a;
  --sage-dark: #2f5245;
  --coral: #d96955;
  --indigo: #263a68;
  --gold: #c89a2b;
  --aqua: #327c88;
  --shadow: 0 18px 44px rgba(22, 32, 42, 0.12);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

body.locale-ja {
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Sans", Meiryo, Inter, sans-serif;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
}

.skip-link:focus {
  top: 1rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(210px, 1fr) auto auto;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem clamp(1rem, 3vw, 2.5rem);
  background: rgba(251, 248, 241, 0.93);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(91, 101, 112, 0.18);
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 0.5rem;
  background: var(--indigo);
  color: #fff;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
}

.brand small {
  color: var(--muted);
  line-height: 1.2;
}

.main-nav {
  display: flex;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
  min-width: 0;
}

.main-nav a {
  text-decoration: none;
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--ink);
}

.locale-switcher {
  display: grid;
  grid-template-columns: repeat(3, minmax(44px, auto));
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 0.5rem;
  overflow: hidden;
  min-width: 0;
}

.locale-button {
  min-height: 2.25rem;
  min-width: 0;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  padding: 0 0.7rem;
}

.locale-button:last-child {
  border-right: 0;
}

.locale-button.is-active {
  background: var(--sage-dark);
  color: #fff;
}

main {
  overflow: hidden;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  min-height: min(760px, calc(100vh - 76px));
  align-items: center;
  padding: clamp(1.2rem, 4vw, 3rem) clamp(1rem, 4vw, 4rem) 1.4rem;
}

.workspace-copy {
  max-width: 680px;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--aqua);
  font-size: 0.79rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 8vw, 5.8rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.lede {
  max-width: 58ch;
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.22rem);
  line-height: 1.6;
}


.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.hero-primary,
.hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  border-radius: 0.5rem;
  padding: 0 1.1rem;
  font-weight: 850;
  text-decoration: none;
}

.hero-primary {
  background: var(--coral);
  border: 1px solid var(--coral);
  color: #fff;
}

.hero-secondary {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  color: var(--ink);
}

.visual-panel {
  margin: 0;
  min-height: 46vh;
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.visual-panel img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 46vh;
  object-fit: cover;
  object-position: 62% center;
}

.test-lab {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(320px, 1.18fr);
  gap: clamp(1rem, 3vw, 2rem);
  padding: 2rem clamp(1rem, 4vw, 4rem) 3rem;
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-heading h2,
.quiz-head h2,
.method-grid h2,
.citation-panel h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.75rem);
  line-height: 1.06;
  letter-spacing: 0;
}

.test-catalog {
  min-width: 0;
}

.catalog-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 1rem;
}

.assessment-anchors {
  height: 0;
  overflow: hidden;
}

.assessment-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.85rem;
  width: 100%;
  min-height: 6.2rem;
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--panel);
  color: var(--ink);
  padding: 1rem;
}

.assessment-card:hover,
.assessment-card:focus-visible,
.assessment-card.is-active {
  border-color: var(--sage);
  box-shadow: 0 10px 28px rgba(47, 82, 69, 0.14);
}

.assessment-icon {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.5rem;
  background: var(--card-color, var(--sage));
  color: #fff;
  font-weight: 900;
}

.assessment-card h3 {
  margin: 0;
  font-size: 1rem;
  line-height: 1.25;
}

.assessment-card p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}

.card-meta {
  align-self: start;
  color: var(--muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.quiz-shell {
  align-self: start;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fbfcfb;
  box-shadow: var(--shadow);
  min-height: 620px;
  padding: clamp(1rem, 3vw, 2rem);
}

.quiz-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.time-pill {
  flex: 0 0 auto;
  border-radius: 999px;
  background: rgba(216, 105, 85, 0.12);
  color: #9f3f30;
  padding: 0.45rem 0.75rem;
  font-weight: 800;
  font-size: 0.9rem;
}

.progress-track {
  height: 0.55rem;
  background: #e8ece9;
  border-radius: 999px;
  overflow: hidden;
  margin: 1.35rem 0;
}

.progress-track span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--sage), var(--coral), var(--gold));
  transition: width 220ms ease;
}

.story-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fff;
  padding: 0.85rem;
  margin-bottom: 1rem;
}

.story-checkpoint {
  color: var(--ink);
  font-weight: 900;
  line-height: 1.2;
}

.chapter-pill {
  justify-self: end;
  border-radius: 999px;
  background: rgba(200, 154, 43, 0.14);
  color: #7a5b12;
  padding: 0.45rem 0.72rem;
  font-size: 0.78rem;
  font-weight: 900;
  white-space: nowrap;
}

.answer-feedback {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  margin: 1rem 0 0;
  border-radius: 999px;
  background: rgba(92, 120, 106, 0.12);
  color: var(--sage-dark);
  padding: 0.42rem 0.7rem;
  font-size: 0.88rem;
  font-weight: 850;
}

.question-index {
  color: var(--muted);
  font-weight: 800;
  margin: 0 0 0.8rem;
}

.question-text {
  margin: 0;
  font-size: clamp(1.45rem, 4vw, 2.15rem);
  line-height: 1.18;
  letter-spacing: 0;
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 1.3rem;
}

.answer-option {
  display: grid;
  place-items: center;
  min-height: 4.8rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fff;
  color: var(--ink);
  padding: 0.6rem;
  text-align: center;
  font-weight: 800;
}

.answer-option span {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.answer-option:hover,
.answer-option:focus-visible,
.answer-option.is-selected {
  border-color: var(--indigo);
  background: rgba(38, 58, 104, 0.08);
}

.quiz-note {
  margin: 1.2rem 0 0;
  color: var(--muted);
  line-height: 1.55;
}

.quiz-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.primary-button,
.secondary-button {
  min-height: 2.85rem;
  border-radius: 0.5rem;
  padding: 0 1.1rem;
  font-weight: 850;
}

.primary-button {
  border: 1px solid var(--indigo);
  background: var(--indigo);
  color: #fff;
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

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

.result-reward {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: center;
  border: 1px solid rgba(200, 154, 43, 0.42);
  border-radius: 0.5rem;
  background: #fff9e9;
  padding: 0.95rem;
  margin-bottom: 1rem;
}

.result-reward > span {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 999px;
  background: var(--gold);
  color: #fff;
  font-size: 1.1rem;
}

.result-reward h4 {
  margin: 0;
  font-size: 1rem;
}

.result-reward p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.result-topline {
  display: grid;
  gap: 0.65rem;
}

.result-topline h3 {
  margin: 0;
  font-size: clamp(1.6rem, 4vw, 2.3rem);
  line-height: 1.1;
}

.result-topline p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.radar-card {
  margin: 1.35rem auto 0;
  width: min(100%, 30rem);
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: linear-gradient(180deg, #fff 0%, #f5f8f6 100%);
  padding: clamp(0.65rem, 2.5vw, 1rem);
}

.radar-chart {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  overflow: visible;
}

.radar-grid-line {
  fill: none;
  stroke: rgba(91, 101, 112, 0.18);
  stroke-width: 1;
}

.radar-axis {
  stroke: rgba(91, 101, 112, 0.16);
  stroke-width: 1;
}

.radar-shape {
  fill: rgba(50, 124, 136, 0.22);
  stroke: var(--aqua);
  stroke-width: 3;
  stroke-linejoin: round;
}

.radar-dot {
  fill: var(--dot-color, var(--sage));
  stroke: #fff;
  stroke-width: 2;
}

.radar-label {
  fill: var(--muted);
  font-size: 0.58rem;
  font-weight: 850;
}

.score-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.score-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 3.25rem;
  border: 1px solid var(--line);
  border-left: 5px solid var(--score-color, var(--sage));
  border-radius: 0.5rem;
  background: #fff;
  padding: 0.7rem 0.85rem;
}

.score-card-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
  color: var(--ink);
  font-weight: 850;
  line-height: 1.25;
}

.score-card-label span {
  flex: 0 0 auto;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 999px;
  background: var(--score-color, var(--sage));
}

.score-card strong {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.9rem;
}

.share-summary {
  margin-top: 1.3rem;
  border-left: 4px solid var(--coral);
  padding: 0.2rem 0 0.2rem 1rem;
  color: var(--muted);
  line-height: 1.6;
}

.next-steps {
  margin-top: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fff;
  padding: 1rem;
}

.next-steps h4 {
  margin: 0;
  font-size: 1rem;
}

.next-steps ul {
  margin: 0.65rem 0 0;
  padding-left: 1.2rem;
}

.next-steps li {
  margin-top: 0.45rem;
  color: var(--muted);
  line-height: 1.55;
}

.method-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(320px, 1.25fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding: 4rem clamp(1rem, 4vw, 4rem);
}

.method-grid > div:first-child p:not(.eyebrow) {
  color: var(--muted);
  line-height: 1.65;
  font-size: 1.05rem;
}

.method-list {
  display: grid;
  gap: 1rem;
}

.method-list article {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.method-list h3 {
  margin: 0;
  font-size: 1.1rem;
}

.method-list p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.region-section,
.faq-section {
  padding: 3rem clamp(1rem, 4vw, 4rem);
  border-top: 1px solid var(--line);
}

.region-grid,
.faq-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.region-grid article,
.faq-list article {
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.75);
  padding: 1rem;
}

.region-grid h3,
.faq-list h3 {
  margin: 0;
  font-size: 1.05rem;
}

.region-grid p,
.faq-list p {
  margin: 0.5rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.source-section {
  padding: 3rem clamp(1rem, 4vw, 4rem);
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.source-grid a {
  display: flex;
  align-items: center;
  min-height: 4rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.85rem;
  text-decoration: none;
  color: var(--sage-dark);
  font-weight: 800;
}

.source-grid a:hover,
.source-grid a:focus-visible {
  border-color: var(--sage);
  background: #f1f6f4;
}

.citation-panel {
  display: grid;
  grid-template-columns: minmax(250px, 0.65fr) minmax(320px, 1.35fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding: 4rem clamp(1rem, 4vw, 4rem);
}

.citation-panel blockquote {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  line-height: 1.45;
  border-left: 5px solid var(--gold);
  padding-left: 1.2rem;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem clamp(1rem, 4vw, 4rem);
  background: var(--ink);
  color: #e8ece9;
}

.footer p {
  margin: 0;
  line-height: 1.5;
}

.footer a {
  color: #fff;
}

.privacy-page {
  width: min(100%, 860px);
  max-width: calc(100vw - 2rem);
  margin: 0 auto;
  padding: 4rem 1rem;
  min-width: 0;
  overflow-wrap: anywhere;
}

.privacy-page h1 {
  font-size: clamp(2rem, 4vw, 3.25rem);
  line-height: 1.08;
  margin-bottom: 1rem;
}

.privacy-page h2 {
  font-size: clamp(1.45rem, 2.8vw, 2rem);
  margin-top: 1.75rem;
}

.privacy-page p,
.privacy-page li,
.privacy-page a {
  color: var(--muted);
  line-height: 1.65;
  overflow-wrap: anywhere;
  word-break: break-word;
}

@media (max-width: 980px) {
  .topbar {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    grid-column: 1 / -1;
    justify-content: space-between;
  }

  .privacy-page {
    width: 100%;
    max-width: 24rem;
    margin: 0;
    padding: 3rem 1rem;
  }

  .workspace,
  .test-lab,
  .method-grid,
  .citation-panel {
    grid-template-columns: 1fr;
  }

  .workspace {
    min-height: auto;
  }

  .visual-panel,
  .visual-panel img {
    min-height: 280px;
  }

  .source-grid {
    grid-template-columns: repeat(2, minmax(120px, 1fr));
  }

  .region-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .topbar {
    position: static;
    display: block;
    grid-template-columns: 1fr;
    overflow-x: hidden;
  }

  .brand,
  .main-nav {
    margin-bottom: 0.8rem;
  }

  .locale-switcher {
    width: min(100%, 22rem);
    max-width: 22rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .locale-button {
    min-height: 2.6rem;
    padding: 0 0.35rem;
  }

  .main-nav {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 0.2rem;
    max-width: 100%;
    min-width: 0;
  }

  .main-nav a {
    flex: 0 0 auto;
  }
  .main-nav a {
    max-width: 100%;
  }

  .workspace,
  .test-lab,
  .method-grid,
  .source-section,
  .citation-panel {
    padding-left: 1rem;
    padding-right: 1rem;
    width: 100vw;
    max-width: 100vw;
  }

  .workspace {
    padding-top: 1.4rem;
  }
  .workspace-copy,
  .lede {
    width: 100%;
    max-width: 22rem;
  }

  h1 {
    font-size: clamp(2.35rem, 15vw, 3.8rem);
  }

  .assessment-card {
    grid-template-columns: auto 1fr;
  }

  .card-meta {
    grid-column: 2;
    white-space: normal;
  }

  .quiz-shell {
    min-height: 0;
  }

  .story-panel {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .chapter-pill {
    justify-self: start;
    white-space: normal;
  }

  .answer-grid {
    grid-template-columns: 1fr;
  }

  .answer-option {
    min-height: 3.6rem;
    justify-content: start;
    text-align: left;
    padding: 0.8rem 0.9rem;
  }
  .score-list {
    grid-template-columns: 1fr;
  }

  .radar-card {
    width: min(100%, 21rem);
  }

  .footer {
    grid-template-columns: 1fr;
    display: grid;
  }

  .source-grid {
    grid-template-columns: 1fr;
  }
}