.page-contact {
  --pc-line: rgba(79, 138, 139, .28);
  --pc-surface-soft: rgba(6, 23, 26, .5);
  --pc-surface: linear-gradient(180deg, rgba(18, 58, 56, .86), rgba(11, 42, 46, .96));
  display: block;
  background: var(--bg-page);
  color: var(--text-main);
}

/* ── 首屏 ── */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(2.25rem, 5vw, 3.75rem);
  background:
    radial-gradient(88% 120% at 92% 2%, rgba(79, 138, 139, .2), rgba(79, 138, 139, 0) 62%),
    linear-gradient(180deg, rgba(6, 23, 26, 0), rgba(6, 23, 26, .6));
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  right: -6%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(79, 138, 139, .75), transparent);
  opacity: .55;
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: center;
  padding-top: clamp(1rem, 3vw, 2rem);
}

.page-contact .contact-hero__title {
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.75rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--c-foam);
}

.page-contact .contact-hero__lead {
  margin: clamp(1rem, 2.4vw, 1.5rem) 0 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  line-height: 1.78;
  color: var(--text-soft);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: clamp(1.25rem, 3vw, 1.85rem) 0 0;
}

.page-contact .contact-hero__media {
  margin: 0;
  border: 1px solid var(--border-print);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  background: var(--bg-sunken);
}

.page-contact .media-frame__caption {
  margin: 0;
  padding: .7rem .9rem .75rem;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--text-faint);
  border-top: 1px solid var(--pc-line);
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ── 主体两栏 ── */
.page-contact .contact-body {
  padding-block: clamp(2.5rem, 7vw, 4.75rem);
}

.page-contact .contact-body__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.25rem);
}

.page-contact .contact-channels {
  min-width: 0;
}

.page-contact .contact-channels .section-head,
.page-contact .contact-routes .section-head {
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .875rem;
}

.page-contact .channel-card {
  position: relative;
  padding: 1.1rem 1.15rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-print);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  width: 44px;
  height: 2px;
  background: var(--c-home);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
}

.page-contact .channel-card__value {
  margin: .6rem 0 .45rem;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--c-foam);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--mono {
  font-family: var(--font-mono);
  font-size: 1.0625rem;
  letter-spacing: .02em;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: .875rem;
  line-height: 1.68;
  color: var(--text-soft);
}

.page-contact .service-pulse {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin: 1.15rem 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--c-mist);
}

.page-contact .service-pulse__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-home);
  box-shadow: 0 0 0 3px rgba(200, 64, 47, .18);
}

.page-contact .contact-channels__media {
  margin: 1.3rem 0 0;
  border: 1px solid var(--border-print);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-sunken);
  aspect-ratio: 10 / 7;
}

.page-contact .contact-channels__media img {
  height: 100%;
}

/* ── 咨询类型 ── */
.page-contact .contact-routes {
  min-width: 0;
}

.page-contact .contact-routes__intro {
  margin: 0 0 clamp(1.1rem, 2.6vw, 1.5rem);
  max-width: 40em;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.page-contact .route-list {
  display: grid;
  gap: .7rem;
}

.page-contact .route-item {
  border: 1px solid var(--border-print);
  border-radius: var(--radius);
  background: var(--pc-surface-soft);
  transition:
    border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-contact .route-item[open] {
  border-color: var(--border-strong);
  background: var(--bg-card);
}

.page-contact .route-item__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: .3rem .85rem;
  align-items: center;
  padding: .95rem 1.05rem;
  cursor: pointer;
  list-style: none;
}

.page-contact .route-item__head::-webkit-details-marker {
  display: none;
}

.page-contact .route-item__head:focus-visible {
  outline: 2px solid var(--c-tide);
  outline-offset: -2px;
}

.page-contact .route-item__index {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .04em;
  color: var(--c-home);
  align-self: start;
  padding-top: .16rem;
}

.page-contact .route-item__label {
  display: grid;
  gap: .12rem;
  min-width: 0;
}

.page-contact .route-item__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: .01em;
  color: var(--c-foam);
}

.page-contact .route-item__hint {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-faint);
}

.page-contact .route-item__chev {
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--c-tide);
  border-bottom: 1.5px solid var(--c-tide);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) var(--ease);
}

.page-contact .route-item[open] .route-item__chev {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-contact .route-item__body {
  padding: .9rem 1.05rem 1.2rem;
  border-top: 1px dashed var(--pc-line);
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .route-item__body p {
  margin: 0;
}

.page-contact .route-item__list {
  list-style: none;
  margin: .75rem 0 0;
  padding: 0;
  display: grid;
  gap: .4rem;
}

.page-contact .route-item__list li {
  position: relative;
  padding-left: 1rem;
}

.page-contact .route-item__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 7px;
  height: 1px;
  background: var(--c-tide);
}

/* ── 响应时段 ── */
.page-contact .contact-sla {
  padding-block: clamp(2.5rem, 7vw, 4.5rem);
  background: linear-gradient(180deg, rgba(6, 23, 26, .72), rgba(6, 23, 26, .26));
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .sla-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.4rem, 3.5vw, 2.15rem);
}

.page-contact .sla-item {
  padding: 1.15rem 1.2rem 1.25rem;
  border: 1px solid var(--border-print);
  border-left: 2px solid var(--c-tide);
  border-radius: var(--radius);
  background: var(--pc-surface-soft);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .sla-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  border-left-color: var(--c-home);
}

.page-contact .sla-item__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  letter-spacing: .01em;
  color: var(--c-foam);
}

.page-contact .sla-item__name {
  margin: .45rem 0 .5rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .03em;
  color: var(--c-board);
}

.page-contact .sla-item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ── 合作共建 ── */
.page-contact .contact-partner {
  padding-block: clamp(2.5rem, 7vw, 4.75rem);
}

.page-contact .contact-partner__lead {
  margin: 0;
  max-width: 42em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-contact .partner-list {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-contact .partner-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .partner-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 11px;
  height: 2px;
  background: var(--c-home);
}

.page-contact .contact-partner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: clamp(1.35rem, 3vw, 1.85rem) 0 0;
}

/* ── 斜切潮线 ── */
.page-contact .tide-cut {
  display: block;
  width: 100%;
  line-height: 0;
}

.page-contact .tide-cut svg {
  display: block;
  width: 100%;
  height: clamp(26px, 3.4vw, 44px);
}

/* ── 站点信息 ── */
.page-contact .contact-facts {
  padding-block: clamp(1.75rem, 4vw, 2.75rem) clamp(3rem, 8vw, 5.5rem);
}

.page-contact .contact-facts__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
  margin-top: clamp(1.4rem, 3.5vw, 2.15rem);
}

.page-contact .fact-list {
  margin: 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .fact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .2rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .fact-row dt {
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.page-contact .fact-row dd {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.62;
  color: var(--text-main);
  overflow-wrap: anywhere;
}

.page-contact .fact-row__mono {
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-contact .contact-facts__note {
  padding: 1.25rem 1.3rem 1.35rem;
  border: 1px solid var(--border-print);
  border-radius: var(--radius);
  background: var(--pc-surface);
  box-shadow: var(--shadow-card);
}

.page-contact .contact-facts__note p {
  margin: 0 0 1rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-contact .contact-facts__note p:last-of-type {
  margin-bottom: 0;
}

.page-contact .contact-facts__actions {
  margin-top: 1.15rem;
  padding-top: 1.15rem;
  border-top: 1px dashed var(--pc-line);
}

/* ── 响应式 ── */
@media (min-width: 600px) {
  .page-contact .fact-row {
    grid-template-columns: 6.5rem minmax(0, 1fr);
    gap: .2rem 1rem;
    align-items: baseline;
  }

  .page-contact .fact-row dt {
    padding-top: .16rem;
  }
}

@media (min-width: 760px) {
  .page-contact .sla-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }

  .page-contact .contact-partner__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .7fr);
    align-items: center;
  }

  .page-contact .contact-facts__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-body__grid {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2.5rem, 4.5vw, 4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .sla-item,
  .page-contact .route-item__chev {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .sla-item:hover {
    transform: none;
  }
}