/* Usage page — /usage/ */
/* ============================================================
   USAGE GUIDE PAGE — /usage/
   ============================================================ */

.usage-guide {
  display: flex;
  flex-direction: column;
  gap: clamp(52px, 8vw, 96px);
  /* 末尾セクション（FAQ）下 — フッター手前で区切りが足りないため */
  padding-bottom: clamp(48px, 8vw, 96px);
}

.usage-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.usage-section__title {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  margin: 0;
}

.usage-section__sub {
  font-size: var(--fs-base);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin: 8px 0 0;
  color: var(--color-ink-main);
}

.usage-section__body {
  font-size: var(--fs-sm);
  line-height: 1.85;
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
  margin: 0;
}

.usage-section__body a {
  color: var(--color-ink-main);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.usage-section__body a:hover {
  opacity: 0.65;
}

.usage-section__body + .usage-list,
.usage-section__sub + .usage-list {
  margin-top: 4px;
}

.usage-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.usage-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: var(--fs-sm);
  line-height: 1.75;
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
}

.usage-list li::before {
  content: "—";
  font-family: var(--font-en);
  font-size: 0.65rem;
  flex: 0 0 auto;
  color: var(--color-text-soft);
}

.usage-list li strong {
  color: var(--color-ink-main);
  font-weight: 600;
}

/* Step list for まとめてお問い合わせ */
.usage-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: none;
}

.usage-steps li {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
}

.usage-steps li:first-child {
  border-top: 1px solid var(--color-border);
}

.usage-steps__num {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--color-text-soft);
  flex-shrink: 0;
  padding-top: 3px;
  min-width: 48px;
}

.usage-steps__text {
  font-size: var(--fs-sm);
  line-height: 1.75;
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
  flex: 1;
}

.usage-steps__text a {
  color: var(--color-ink-main);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 3-card grid for お問い合わせの種類 */
.usage-types {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.usage-type {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.usage-type__title {
  font-size: var(--fs-base);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin: 0;
  color: var(--color-ink-main);
}

.usage-type__body {
  font-size: var(--fs-sm);
  line-height: 1.75;
  letter-spacing: 0.04em;
  color: var(--color-text-soft);
  margin: 0;
  flex: 1;
}

.usage-type__link {
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
  color: var(--color-ink-main);
  text-decoration: none;
  border-bottom: 1px solid var(--color-ink-main);
  padding-bottom: 2px;
  align-self: flex-start;
  transition: opacity var(--dur-base) var(--ease-standard);
}

.usage-type__link:hover {
  opacity: 0.65;
}

/* CTA link at bottom of FAQ section */
.usage-cta {
  display: inline-block;
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  color: var(--color-ink-main);
  text-decoration: none;
  border-bottom: 1px solid var(--color-ink-main);
  padding-bottom: 2px;
  align-self: flex-start;
  transition: opacity var(--dur-base) var(--ease-standard);
}

.usage-cta:hover {
  opacity: 0.65;
}

@media (max-width: 900px) {
  .usage-types {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .usage-types {
    grid-template-columns: 1fr;
  }

  .usage-type {
    padding: 18px 16px;
  }

  .usage-steps li {
    gap: 12px;
  }

  .usage-steps__num {
    min-width: 40px;
  }
}