/* Shared section header */
.section-header {
  text-align: center;
  max-width: 580px;
  margin: 0 auto var(--space-lg);
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--font-size-body);
  margin-top: var(--space-xs);
}

/* Demo section — tight to hero, large video */
.demo {
  padding-top: 0;
  margin-top: calc(var(--space-lg) * -1);
}

.demo__video-wrap {
  max-width: 920px;
  margin: 0 auto;
}

.demo__embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.demo__embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.demo__caption {
  text-align: center;
  margin-top: var(--space-md);
  font-size: var(--font-size-micro);
  color: var(--text-tertiary);
  font-style: italic;
}

/* Pillars — 3 column grid */
.pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.pillar__title {
  margin-bottom: var(--space-xs);
}

.pillar__desc {
  color: var(--text-secondary);
  font-size: var(--font-size-small);
  line-height: 1.65;
}

/* Steps */
.steps__list {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.step {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.step__number {
  font-size: clamp(2rem, 3.5vw, 3.5rem);
  font-weight: 600;
  line-height: 1;
  color: rgba(255, 255, 255, 0.07);
  flex-shrink: 0;
  width: 56px;
  text-align: right;
}

.step__content {
  padding-top: 0.2rem;
}

.step__title {
  font-size: var(--font-size-h3);
  margin-bottom: 0.15rem;
}

.step__desc {
  color: var(--text-secondary);
  font-size: var(--font-size-small);
}

.steps__note {
  text-align: center;
  margin-top: var(--space-lg);
  font-size: var(--font-size-micro);
  color: var(--text-tertiary);
}

/* Use cases — 3 column grid */
.usecases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.usecase__title {
  margin-bottom: var(--space-xs);
}

.usecase__desc {
  color: var(--text-secondary);
  font-size: var(--font-size-small);
  line-height: 1.65;
}

/* FAQ */
.faq__list {
  max-width: 680px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.faq__question {
  width: 100%;
  text-align: left;
  padding: var(--space-sm) 0;
  font-size: var(--font-size-body);
  font-weight: 400;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
}

.faq__icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  position: relative;
}

.faq__icon::before,
.faq__icon::after {
  content: '';
  position: absolute;
  background: var(--text-tertiary);
  border-radius: 1px;
}

.faq__icon::before {
  width: 100%;
  height: 1.5px;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}

.faq__icon::after {
  width: 1.5px;
  height: 100%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.faq__item.open .faq__icon::after {
  transform: translateX(-50%) rotate(90deg);
  opacity: 0;
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq__answer p {
  padding-bottom: var(--space-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-small);
  line-height: 1.7;
}

/* CTA strip */
.cta-strip {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
}

.cta-strip h2 {
  margin-bottom: var(--space-xs);
}

.cta-strip p {
  color: var(--text-secondary);
  font-size: var(--font-size-small);
  max-width: 420px;
  margin: 0 auto var(--space-lg);
}

/* Footer */
.footer {
  padding: var(--space-md) var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__brand {
  font-weight: 500;
  font-size: var(--font-size-small);
  color: var(--text-secondary);
}

.footer__brand a {
  color: var(--text-tertiary);
  font-weight: 400;
  margin-left: var(--space-sm);
}

.footer__links {
  display: flex;
  gap: var(--space-md);
}

.footer__links a {
  font-size: var(--font-size-micro);
  color: var(--text-tertiary);
  transition: color var(--transition-fast);
}

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

.footer__copy {
  width: 100%;
  text-align: center;
  margin-top: var(--space-xs);
  font-size: var(--font-size-micro);
  color: var(--text-tertiary);
}