.hero-section {
  padding-block: clamp(4rem, 9vw, 7rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(18rem, 0.8fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
}

.hero-lead {
  max-width: 42rem;
  font-size: clamp(1.04rem, 2.5vw, 1.28rem);
}

.hero-actions,
.center-action {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

.hero-visual {
  min-height: 25rem;
  display: grid;
  place-items: center;
}

.learning-panel {
  width: min(100%, 27rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--color-surface), var(--color-surface-soft));
  box-shadow: var(--shadow-soft);
  padding: 1.35rem;
  transform: rotate(-2deg);
}

.panel-top {
  display: flex;
  gap: 0.45rem;
  margin-bottom: 1.2rem;
}

.panel-top span {
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 50%;
  background: var(--color-border);
}

.lesson-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 1rem;
}

.lesson-card.active {
  border-color: color-mix(in srgb, var(--color-primary), var(--color-border) 35%);
}

.lesson-icon {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  font-weight: 900;
}

.lesson-card strong,
.lesson-card small {
  display: block;
}

.lesson-card small {
  color: var(--color-muted);
}

.lesson-progress {
  overflow: hidden;
  height: 0.65rem;
  border-radius: 999px;
  background: var(--color-border);
}

.lesson-progress span {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 2rem;
  align-items: start;
}

.section-heading {
  max-width: 48rem;
  margin-bottom: 2rem;
}

.feature-grid,
.support-grid,
.mini-faq-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.feature-card,
.content-card,
.mini-faq-grid article,
.notice-card {
  padding: 1.25rem;
}

.feature-card img {
  width: 2.2rem;
  height: 2.2rem;
  margin-bottom: 1rem;
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.steps-list li {
  min-height: 9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 1.2rem;
}

.steps-list span {
  display: grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  margin-bottom: 1rem;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary-strong);
  font-weight: 900;
}

.support-band,
.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  padding: clamp(1.4rem, 4vw, 2.4rem);
  box-shadow: var(--shadow-card);
}

.support-band p,
.cta-panel p {
  max-width: 48rem;
}

.center-action {
  justify-content: center;
}

.final-cta {
  padding-top: 0;
}

.page-hero {
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

.page-hero p {
  font-size: 1.12rem;
}

.content-layout {
  display: grid;
  gap: 1rem;
}

.contact-card {
  display: grid;
  gap: 0.35rem;
  padding: 1.25rem;
  color: var(--color-text);
}

.contact-card:hover {
  transform: translateY(-2px);
  text-decoration: none;
}

.contact-card span {
  color: var(--color-muted);
}

.contact-card strong {
  overflow-wrap: anywhere;
}

.notice-card {
  margin-top: 1rem;
}

.search-box {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-weight: 800;
}

.search-box input {
  width: 100%;
  min-height: 3.1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  padding: 0.7rem 1rem;
}

.faq-list {
  display: grid;
  gap: 0.8rem;
}

.faq-item {
  overflow: hidden;
}

.faq-item h2 {
  margin: 0;
  font-size: 1rem;
}

.faq-item button {
  position: relative;
  width: 100%;
  min-height: 3.8rem;
  border: 0;
  background: transparent;
  color: var(--color-text);
  padding: 1rem 1.1rem 1rem 3.25rem;
  text-align: right;
  font-weight: 850;
}

.faq-item button::after {
  content: "+";
  position: absolute;
  inset: auto auto auto 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--color-primary-strong);
}

.faq-item button[aria-expanded="true"]::after {
  content: "-";
}

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition);
}

.faq-answer > p {
  overflow: hidden;
  margin: 0;
  padding-inline: 1.1rem;
}

.faq-item.is-open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-item.is-open .faq-answer > p {
  padding-block: 0 1.1rem;
}

.empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  padding: 1rem;
  text-align: center;
}

.legal-layout {
  display: grid;
  grid-template-columns: 17rem minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.toc-card {
  position: sticky;
  top: calc(var(--header-height) + 1rem);
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
}

.toc-card a,
.toc-card span {
  display: block;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  padding: 0.45rem 0.65rem;
}

.legal-card {
  padding: clamp(1.2rem, 3vw, 2rem);
}

.legal-card h2 {
  margin-top: 1.6rem;
  font-size: 1.35rem;
}

.legal-card h2:first-child {
  margin-top: 0;
}

.not-found {
  min-height: 58vh;
  display: grid;
  place-items: center;
}

.error-code {
  color: var(--color-primary-strong);
  font-size: clamp(3rem, 12vw, 7rem);
  font-weight: 900;
  line-height: 1;
}

.reveal {
  animation: rise-in 520ms ease both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}