.page-contact {
  --contact-card-bg: linear-gradient(180deg, rgba(22, 34, 74, 0.96), rgba(17, 27, 58, 0.96));
  --contact-sticky-top: 108px;
  --contact-gap: clamp(18px, 2.6vw, 26px);
}

/* breadcrumbs */
.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}
.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(154, 167, 199, 0.5);
}
.page-contact .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-contact .breadcrumbs a:hover {
  color: var(--lime);
  border-bottom-color: var(--lime-line);
}
.page-contact .breadcrumbs [aria-current="page"] {
  color: var(--paper);
}

/* hero */
.page-contact .contact-hero {
  padding-top: clamp(18px, 3vw, 34px);
}
.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}
.page-contact .contact-hero__lead h1 {
  margin: 12px 0 0;
  max-width: 18em;
}
.page-contact .contact-hero__lead .lede {
  margin-top: clamp(14px, 2vw, 20px);
}
.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}
.page-contact .contact-hero__mini {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(18px, 3vw, 40px);
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line);
}
.page-contact .contact-hero__mini-item {
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
  min-width: 120px;
}
.page-contact .contact-hero__mini-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 36px);
  font-weight: 400;
  line-height: 1;
  color: var(--lime);
}
.page-contact .contact-hero__mini-item dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* sticky contact card */
.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 3.4vw, 32px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  background: var(--contact-card-bg);
  box-shadow: 0 26px 64px rgba(0, 0, 0, 0.38);
}
.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--lime), var(--cyan));
}
.page-contact .contact-card__label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lime);
}
.page-contact .contact-card__list {
  margin: 0;
}
.page-contact .contact-card__row {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.page-contact .contact-card__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-contact .contact-card__key {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.page-contact .contact-card__val {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .contact-card__val--mono {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--cyan);
}
.page-contact .contact-card__hint {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* direction chips */
.page-contact .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 clamp(24px, 3.4vw, 36px);
}
.page-contact .chip-row a {
  text-decoration: none;
}

/* cooperation cards */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
}
.page-contact .coop-card {
  position: relative;
  scroll-margin-top: 120px;
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--card);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.page-contact .coop-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--line-strong);
}
.page-contact .coop-card--lime::after {
  background: var(--lime);
}
.page-contact .coop-card--cyan::after {
  background: var(--cyan);
}
.page-contact .coop-card--orange::after {
  background: var(--orange);
}
.page-contact .coop-card:hover {
  border-color: var(--lime-line);
  transform: translateY(-3px);
}
.page-contact .coop-card__no {
  margin: 0 0 12px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--lime);
}
.page-contact .coop-card__title {
  margin: 0 0 12px;
  font-size: clamp(20px, 3vw, 24px);
  font-weight: 400;
  line-height: 1.35;
  color: var(--paper);
}
.page-contact .coop-card__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}
.page-contact .coop-card__meta {
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.page-contact .coop-card__meta li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.86;
}
.page-contact .coop-card__meta li:last-child {
  margin-bottom: 0;
}
.page-contact .coop-card__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

/* flow */
.page-contact .flow-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.2vw, 20px);
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .flow-step {
  position: relative;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(22, 34, 74, 0.72);
}
.page-contact .flow-step__no {
  display: block;
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1;
  color: var(--lime);
}
.page-contact .flow-step__title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--paper);
}
.page-contact .flow-step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* contact detail */
.page-contact .contact-detail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}
.page-contact .contact-detail__figure {
  margin: 0;
}
.page-contact .contact-detail__copy .section-title {
  margin-top: 10px;
}
.page-contact .contact-detail__copy .prose {
  margin-top: clamp(14px, 2vw, 20px);
}
.page-contact .channel-list {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}
.page-contact .channel-item {
  display: grid;
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.page-contact .channel-item:first-child {
  border-top: 1px solid var(--line);
}
.page-contact .channel-item__key {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.page-contact .channel-item__val {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .channel-item__val.mono {
  color: var(--cyan);
}
.page-contact .contact-detail__note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* feedback */
.page-contact .feedback__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}
.page-contact .feedback__copy .prose {
  margin-top: clamp(14px, 2vw, 20px);
}
.page-contact .metric-list {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .metric-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}
.page-contact .metric-item:first-child {
  border-top: 1px solid var(--line);
}
.page-contact .metric-item__no {
  font-size: 13px;
  color: var(--lime);
}
.page-contact .metric-item__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.9;
}
.page-contact .feedback__copy .btn {
  margin-top: clamp(22px, 3vw, 30px);
}
.page-contact .feedback__figure {
  margin: 0;
}

/* faq */
.page-contact .faq-stack {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

/* cta */
.page-contact .contact-cta__inner {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  background: linear-gradient(120deg, rgba(198, 255, 61, 0.09), rgba(57, 230, 208, 0.05) 55%, rgba(22, 34, 74, 0.9));
}
.page-contact .contact-cta__copy h2 {
  margin: 0;
}
.page-contact .contact-cta__copy p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 56ch;
}
.page-contact .contact-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* media 兜底 */
.page-contact .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* tablet & desktop */
@media (min-width: 760px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .channel-item {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
  .page-contact .contact-cta__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.85fr);
  }
  .page-contact .contact-card {
    position: sticky;
    top: var(--contact-sticky-top);
  }
  .page-contact .contact-detail__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  .page-contact .feedback__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
  .page-contact .feedback__figure {
    position: sticky;
    top: var(--contact-sticky-top);
  }
  .page-contact .contact-detail__figure {
    position: sticky;
    top: var(--contact-sticky-top);
  }
}

@media (min-width: 1120px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}