/* ミライチャット — 教育向け・落ち着いた体裁 */

:root {
  --color-primary: #0078c8;
  --color-primary-hover: #005fa3;
  --color-primary-light: #e8f4fc;
  --color-chart: #0078c8;
  --color-chart-alt: #5a6a7a;
  --color-link: #0078c8;
  --color-link-visited: #005fa3;
  --color-bg: #ffffff;
  --color-bg-subtle: #f5f8fa;
  --color-bg-muted: #e8eef3;
  --color-text: #1a1a1f;
  --color-text-sub: #4b5563;
  --color-border: #d8d8de;
  --color-border-strong: #9ca3af;
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, sans-serif;
  --line-body: 1.8;
  --line-heading: 1.5;
  --radius: 6px;
  --radius-sm: 4px;
  --chart-plot-h: 280px;
  --max-width: 64rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --shadow-surface: 0 2px 12px rgba(0, 48, 96, 0.07);
  --shadow-surface-lg: 0 8px 28px rgba(0, 48, 96, 0.1);
  --shadow-header: 0 1px 0 rgba(0, 48, 96, 0.06);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 400;
  line-height: var(--line-body);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: clip;
}

img {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

a:visited {
  color: var(--color-link-visited);
}

a:hover {
  color: var(--color-primary-hover);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

.skip-link:focus {
  left: var(--space-sm);
  top: var(--space-sm);
}

/* Header */
.site-header {
  background: var(--color-bg);
  box-shadow: var(--shadow-header);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
}

.logo {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.logo:hover {
  color: var(--color-primary-hover);
  text-decoration: none;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
}

.nav a {
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
}

.nav a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.nav-cta {
  padding: 0.4rem 1rem;
  color: #fff !important;
  background: var(--color-primary);
  border-radius: var(--radius);
  text-decoration: none !important;
}

.nav-cta:hover {
  color: #fff !important;
  background: var(--color-primary-hover);
}

.nav-toggle {
  display: none;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius);
  cursor: pointer;
}

/* Hero */
.hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 55%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-catch {
  margin: 0 0 0.35rem;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-primary);
}

.hero-brand {
  margin: 0 0 var(--space-md);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.hero-lead {
  margin: 0 0 var(--space-sm);
  font-size: 1.0625rem;
  max-width: 36rem;
  color: var(--color-text);
}

.hero-lead strong {
  font-weight: 700;
}

.hero-meta {
  margin: 0 0 var(--space-md);
  font-size: 0.8125rem;
  color: var(--color-text-sub);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 280px;
}

.hero-mock {
  display: block;
  width: min(100%, 440px);
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface-lg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0 1.25rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  color: #fff;
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  color: #fff;
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
}

.btn-secondary {
  color: var(--color-text);
  background: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-surface);
}

.btn-secondary:hover {
  background: var(--color-bg-subtle);
}

/* Sections */
section {
  padding: var(--space-xl) 0;
}

.section--alt {
  background: var(--color-bg-subtle);
}

.section-head {
  margin-bottom: var(--space-lg);
}

.section-eyebrow {
  margin: 0 0 0.35rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.section-eyebrow + h2 {
  margin-top: 0.35rem;
}

.section-head--center {
  text-align: center;
}

.section-head--center .section-lead {
  margin-inline: auto;
}

.section-head--compact {
  margin-bottom: var(--space-md);
}

.section-lead {
  margin: var(--space-sm) 0 0;
  max-width: 40rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-sub);
}

/* for 学習者 / 教員 …（ミライシード型） */
.for-grid {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

@media (min-width: 48rem) {
  .for-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.for-card {
  margin: 0;
  padding: var(--space-md) var(--space-md) var(--space-md) 4.5rem;
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.for-card__badge {
  position: absolute;
  left: var(--space-md);
  top: var(--space-md);
  margin: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 50%;
}

.for-card__role {
  margin: 0 0 0.25rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
}

.for-card__title {
  margin: 0 0 var(--space-xs);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: var(--line-heading);
}

.for-card p:last-child {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}

/* DATA ハイライト */
.stats-band {
  padding: var(--space-xl) 0;
  background: var(--color-bg);
}

.stats-grid {
  display: grid;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 40rem) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.stat-item {
  padding: var(--space-md);
  text-align: center;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.stat-item__value {
  margin: 0 0 0.35rem;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

.stat-item__value span {
  font-size: 0.65em;
  font-weight: 700;
}

.stat-item__label {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-sub);
}

.stats-note {
  margin: var(--space-md) 0 0;
  text-align: center;
  font-size: 0.9375rem;
}

/* About（背景ブロック等） */
.about-lead {
  margin: 0 0 var(--space-lg);
  padding: var(--space-md);
  font-size: 1.0625rem;
  line-height: var(--line-body);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface), inset 4px 0 0 var(--color-primary);
}

.about-pillars {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

@media (min-width: 48rem) {
  .about-pillars {
    grid-template-columns: repeat(3, 1fr);
  }
}

.about-pillar {
  margin: 0;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.about-pillar__title {
  margin: 0 0 var(--space-xs);
  padding-bottom: var(--space-xs);
  font-size: 1rem;
  font-weight: 700;
  line-height: var(--line-heading);
  color: var(--color-primary);
}

.about-pillar p {
  margin: var(--space-sm) 0 0;
  font-size: 0.9375rem;
  color: var(--color-text);
}

.about-flow {
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.about-flow__label {
  margin: 0 0 var(--space-sm);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-sub);
  text-transform: uppercase;
}

.about-flow__steps {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
  align-items: center;
}

.about-flow__steps li {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  background: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-surface);
}

.about-flow__steps li span {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-sub);
}

.about-flow__steps li:last-child {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.about-flow__steps li:not(:last-child)::after {
  content: "→";
  margin-left: 0.35rem;
  font-weight: 400;
  color: var(--color-text-sub);
}

@media (max-width: 36rem) {
  .about-flow__steps {
    flex-direction: column;
    align-items: stretch;
  }

  .about-flow__steps li:not(:last-child)::after {
    content: none;
  }
}

.about-block {
  margin-bottom: var(--space-lg);
}

.about-block__heading {
  margin: 0 0 var(--space-sm);
  padding: var(--space-xs) 0 var(--space-xs) var(--space-sm);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: var(--line-heading);
  border-left: 4px solid var(--color-primary);
}

.about-block__text {
  margin: 0 0 var(--space-md);
  max-width: 42rem;
}

.about-block--design {
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.about-block--design .about-block__heading {
  border-left: none;
  padding-left: 0;
}

.about-block--design .about-block__text {
  margin-bottom: 0;
}

.section-head p {
  margin: 0;
  color: var(--color-text-sub);
}

/* Charts */
.chart-panel {
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.section--alt .chart-panel,
.section--alt .research-chart {
  background: #fff;
}

.chart-panel__title,
.chart-figure__caption {
  margin: 0 0 var(--space-md);
  padding-bottom: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: var(--line-heading);
  color: var(--color-text);
}

.chart-panel__note--inline {
  margin: -0.5rem 0 var(--space-sm);
}

.chart-panel__note {
  margin: var(--space-sm) 0 0;
  font-size: 0.8125rem;
  color: var(--color-text-sub);
}

.chart-panel__note--top {
  margin: 0 0 var(--space-sm);
}

.chart-row {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 40rem) {
  .chart-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* Horizontal bars */
.bar-chart--horizontal {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.bar-row {
  display: grid;
  grid-template-columns: 7.5rem 1fr 3.5rem;
  gap: 0.75rem;
  align-items: center;
}

.bar-chart--survey .bar-row {
  grid-template-columns: 10rem 1fr 3.5rem;
}

@media (max-width: 36rem) {
  .bar-row,
  .bar-chart--survey .bar-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .bar-row__track {
    order: 2;
  }

  .bar-row__value {
    order: 3;
    text-align: left;
  }
}

.bar-row__label {
  font-size: 0.875rem;
  font-weight: 700;
}

.bar-row__track {
  height: 1.5rem;
  background: #eef2f6;
  border-radius: var(--radius);
  overflow: hidden;
}

.bar-row__fill {
  height: 100%;
  background: var(--color-chart);
  border-radius: var(--radius-sm);
  min-width: 2px;
}

.bar-row--highlight .bar-row__fill {
  background: var(--color-primary);
}

.bar-row__value {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: right;
}

/* 縦棒グラフ（軸つき・高さ強調） */
.chart-growth-note,
.chart-summary {
  margin: 0 0 var(--space-sm);
  font-size: 0.875rem;
  color: var(--color-text-sub);
}

.chart-summary strong {
  font-weight: 700;
}

.chart-v {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  gap: 0.5rem;
  margin-top: var(--space-sm);
}

.chart-v__axis {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: var(--chart-plot-h);
  padding-bottom: 1.75rem;
  font-size: 0.75rem;
  color: var(--color-text-sub);
  text-align: right;
}

.chart-v__unit {
  font-size: 0.6875rem;
  font-weight: 700;
}

.chart-v__scale {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.chart-v__plot {
  border-left: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 0 0.5rem 0 0.75rem;
  background-color: #fff;
  background-image: repeating-linear-gradient(
    to top,
    #fff,
    #fff calc(25% - 1px),
    #eef2f6 calc(25% - 1px),
    #eef2f6 25%
  );
}

.chart-v__bars {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: clamp(1rem, 8%, 2.5rem);
  height: var(--chart-plot-h);
  padding-top: 0.5rem;
}

.chart-v__col {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  max-width: 5rem;
  min-width: 3.5rem;
}

.chart-v__bar {
  position: relative;
  width: 100%;
  max-width: 3.25rem;
  height: calc(var(--h) * var(--chart-plot-h) / 100);
  min-height: 12px;
  background: var(--color-chart);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.chart-v__bar--alt {
  background: var(--color-chart-alt);
}

.chart-v__bar--emph {
  outline: 2px solid var(--color-text);
  outline-offset: 1px;
}

.chart-v__val {
  position: absolute;
  top: -1.35rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

.chart-v__col--last .chart-v__val {
  font-size: 0.9375rem;
}

.chart-v__lbl {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-sub);
}

.chart-v__col--last .chart-v__lbl {
  color: var(--color-text);
}

/* Cards list */
.card-list {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

@media (min-width: 48rem) {
  .card-list--3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.card__icon {
  display: none;
}

.card h3,
.card__title {
  margin: 0 0 var(--space-xs);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: var(--line-heading);
  color: var(--color-text);
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}

.notice {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-bg-subtle);
  border-left: 3px solid var(--color-primary);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.notice strong {
  font-weight: 700;
}

.notice p {
  margin: 0;
}

/* Features */
.feature-hint {
  margin: 0 0 var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-sub);
}

.feature-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 48rem) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
  overflow: hidden;
}

@media (min-width: 48rem) {
  .feature-card {
    display: grid;
    grid-template-columns: 160px 1fr;
    grid-template-rows: auto;
    gap: var(--space-md);
    align-items: start;
  }
}

.feature-card__zoom {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: none;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-subtle);
  box-shadow: var(--shadow-surface);
  cursor: zoom-in;
  font: inherit;
}

.feature-card__zoom:hover {
  box-shadow: var(--shadow-surface-lg);
}

.feature-card__zoom img {
  display: block;
  width: 100%;
  height: auto;
  min-height: 160px;
  max-height: 200px;
  object-fit: cover;
  object-position: top center;
}

@media (min-width: 48rem) {
  .feature-card__zoom img {
    min-height: 120px;
    max-height: 140px;
  }
}

.feature-card__zoom-label {
  position: absolute;
  right: 0.35rem;
  bottom: 0.35rem;
  padding: 0.15rem 0.4rem;
  font-size: 0.6875rem;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.feature-card__body h3 {
  margin: var(--space-sm) 0 var(--space-xs);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
}

@media (min-width: 48rem) {
  .feature-card__body h3 {
    margin-top: 0;
  }
}

.feature-card__body p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-sub);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.lightbox[hidden] {
  display: none;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(45, 42, 58, 0.75);
  cursor: pointer;
}

.lightbox__dialog {
  position: relative;
  z-index: 1;
  max-width: min(96vw, 56rem);
  max-height: 92vh;
  padding: 0.75rem;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.lightbox__img {
  display: block;
  max-width: 100%;
  max-height: calc(92vh - 4rem);
  margin: 0 auto;
  border-radius: var(--radius-sm);
}

.lightbox__caption {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-text-sub);
}

.lightbox__close {
  position: absolute;
  top: -0.5rem;
  right: -0.5rem;
  width: 2.5rem;
  height: 2.5rem;
  font-size: 1.5rem;
  line-height: 1;
  color: #fff;
  background: var(--color-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
}

.lightbox__close:hover {
  background: var(--color-primary-hover);
}

/* 学習者の声 */
/* 学習者の声 — 独立セクション */
#voices {
  overflow: hidden;
}

#voices .voice-slider {
  max-width: 56rem;
  margin-inline: auto;
}

.voice-categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin: 0 0 var(--space-md);
  padding: 0;
  list-style: none;
}

.voice-categories li {
  margin: 0;
}

.voice-section__note {
  margin: var(--space-md) 0 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-sub);
}

/* カードスライダー */
.voice-slider {
  margin-top: 0;
}

.voice-slider__viewport {
  overflow-x: auto;
  overflow-y: hidden;
  margin: 0;
  padding: 0.35rem 0;
  --voice-per-view: 1;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  cursor: grab;
  touch-action: pan-x;
}

.voice-slider__viewport::-webkit-scrollbar {
  display: none;
}

.voice-slider__viewport.is-dragging {
  cursor: grabbing;
  scroll-snap-type: none;
  scroll-behavior: auto;
}

.voice-slider__viewport.is-dragging .voice-card {
  scroll-snap-align: none;
}

@media (min-width: 40rem) {
  .voice-slider__viewport {
    --voice-per-view: 2;
  }
}

@media (min-width: 56rem) {
  .voice-slider__viewport {
    --voice-per-view: 3;
  }
}

.voice-slider__viewport:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.voice-slider__track {
  display: flex;
  gap: var(--space-sm);
}

.voice-card {
  flex: 0 0 calc((100% - (var(--voice-per-view) - 1) * var(--space-sm)) / var(--voice-per-view));
  scroll-snap-align: start;
  margin: 0;
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  min-height: 11rem;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.voice-card__badge {
  align-self: flex-start;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.4;
  border-radius: 999px;
}

.voice-card__badge--resistance {
  color: #0d5a8a;
  background: #e8f4fc;
}

.voice-card__badge--motivation {
  color: #5a3d8a;
  background: #f0ebf8;
}

.voice-card__badge--continue {
  color: #1a5c40;
  background: #e8f5ef;
}

.voice-card__badge--growth {
  color: #7a4a10;
  background: #fdf3e8;
}

.voice-card__quote {
  margin: 0;
  flex: 1;
}

.voice-card__quote p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-text);
}

.voice-card__quote p::before {
  content: "「";
}

.voice-card__quote p::after {
  content: "」";
}

.voice-slider__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.voice-slider__arrow {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-primary);
  background: var(--color-bg);
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-surface);
  cursor: pointer;
}

.voice-slider__arrow:hover:not(:disabled) {
  background: var(--color-primary-light);
  box-shadow: var(--shadow-surface-lg);
}

.voice-slider__arrow:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.voice-slider__dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
}

.voice-slider__dot {
  width: 0.5rem;
  height: 0.5rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--color-border-strong);
  cursor: pointer;
}

.voice-slider__dot:hover {
  background: var(--color-chart-alt);
}

.voice-slider__dot.is-active {
  width: 1.25rem;
  border-radius: 999px;
  background: var(--color-primary);
}

/* Theory */
.theory-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.theory-tags span {
  padding: 0.2rem 0.5rem;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.theory-tags .theory-tags__arrow {
  font-weight: 400;
  border: none;
  background: none;
  padding: 0.35rem 0;
}

/* Research */
#research > .container {
  width: min(100% - 2rem, 72rem);
}

.research-highlights {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
}

.research-highlights__title {
  margin: 0 0 var(--space-md);
  font-size: 1.125rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
}

.research-findings {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.research-item {
  padding: var(--space-lg);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.research-item__head {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "rq title"
    "rq cite";
  gap: 0.35rem 1rem;
  align-items: center;
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-primary-light);
}

.research-item__rq {
  grid-area: rq;
  margin: 0;
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  color: #fff;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.research-item__title {
  grid-area: title;
  margin: 0;
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
}

.research-item__cite {
  grid-area: cite;
  margin: 0;
  padding-left: 0;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-sub);
}

.research-item__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.research-item__text {
  font-size: 1rem;
  line-height: var(--line-body);
  color: var(--color-text);
}

.research-item__text p {
  margin: 0;
}

.research-item__text p + p {
  margin-top: var(--space-sm);
}

.research-item__findings {
  padding: var(--space-md);
  background: var(--color-bg-subtle);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--color-primary);
}

.research-item__findings-title {
  margin: 0 0 var(--space-xs);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.research-item__findings p {
  margin: 0;
  font-size: 1rem;
  line-height: var(--line-body);
}

.research-item__figures {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.research-item .chart-growth-note {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-sub);
}

@media (max-width: 36rem) {
  .research-item__head {
    grid-template-columns: 1fr;
    grid-template-areas:
      "rq"
      "title"
      "cite";
  }

  .research-item__rq {
    justify-self: start;
  }
}

#research .chart-row {
  gap: var(--space-md);
  align-items: flex-start;
}

.research-chart {
  margin: 0;
  padding: var(--space-md);
  background: #fff;
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px var(--color-bg-muted);
}

.research-chart__caption {
  margin: 0 0 var(--space-xs);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: var(--line-heading);
  color: var(--color-text);
}

.research-chart__note {
  margin: 0 0 var(--space-sm);
  font-size: 0.8125rem;
  color: var(--color-text-sub);
}

.research-chart .chart-summary {
  margin: 0 0 var(--space-sm);
}

.research-chart--wide {
  max-width: 40rem;
}

.note {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-sub);
}

.note--research {
  margin-top: var(--space-lg);
  padding: 0;
  text-align: center;
  background: transparent;
  box-shadow: none;
}

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

/* Publications */
#publications .container {
  max-width: 52rem;
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
}

.pub-item {
  padding: var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface);
}

.pub-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0 0 0.65rem;
}

.pub-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.28em 0.75em;
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: #e8f4fc;
  border: 1px solid rgba(0, 120, 200, 0.22);
  border-radius: 999px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.85) inset;
}

.pub-badge--oral {
  color: #0a5f8f;
  background: #e3f2fb;
  border-color: rgba(10, 95, 143, 0.25);
}

.pub-badge--proceeding {
  color: #5a3d8a;
  background: #f0ebf8;
  border-color: rgba(90, 61, 138, 0.22);
}

.pub-badge--journal {
  color: #1a6b4a;
  background: #e8f6ef;
  border-color: rgba(26, 107, 74, 0.22);
}

.pub-badge--thesis {
  color: #8a5a12;
  background: #faf3e6;
  border-color: rgba(138, 90, 18, 0.22);
}

.pub-badge--patent {
  color: #8a3030;
  background: #fbecec;
  border-color: rgba(138, 48, 48, 0.22);
}

.pub-badge--book {
  color: #4a4a4a;
  background: #f0f0f0;
  border-color: rgba(74, 74, 74, 0.18);
}

.pub-badge--other {
  color: var(--color-text-sub);
  background: var(--color-bg-muted);
  border-color: rgba(0, 48, 96, 0.12);
}

.pub-citation {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--color-text);
}

.pub-citation em {
  font-style: italic;
}

.pub-citation a {
  color: var(--color-primary);
  word-break: break-all;
}

/* Contact */
#contact .container {
  max-width: 40rem;
}

.contact-panel {
  padding: var(--space-lg);
  text-align: center;
  background: var(--color-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-surface-lg);
}

.contact-note {
  margin: var(--space-md) 0 0;
  font-size: 0.875rem;
  color: var(--color-text-sub);
}

/* Footer */
.site-footer {
  padding: var(--space-lg) 0;
  font-size: 0.875rem;
  color: var(--color-text-sub);
  background: var(--color-bg-subtle);
  box-shadow: inset 0 1px 0 rgba(0, 48, 96, 0.06);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-md);
}

.site-footer a {
  color: var(--color-text-sub);
}

.site-footer a:hover {
  color: var(--color-primary);
}

/* Responsive */
@media (max-width: 48rem) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: var(--space-sm);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav a:last-child {
    border-bottom: none;
  }

  .nav-cta {
    margin-top: 0.5rem;
    text-align: center;
  }

  .nav-toggle {
    display: block;
  }

  .site-header {
    position: relative;
  }

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

  .hero-visual {
    order: -1;
  }

  :root {
    --chart-plot-h: 240px;
  }
}