.page-contact {
  --pc-hairline: rgba(34, 49, 94, 0.45);
  position: relative;
  background-color: var(--bg);
  color: var(--ink);
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--pc-hairline) 1px, transparent 1px),
    linear-gradient(90deg, var(--pc-hairline) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.12));
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.12));
}

.page-contact > * {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(32px, 7vw, 76px) 0 clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 62px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  max-width: 15em;
}

.page-contact .contact-hero__lead {
  margin: 20px 0 0;
  max-width: min(100%, 620px);
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.5vw, 34px);
}

/* ---------- 01 联系渠道 ---------- */
.page-contact .contact-channels {
  padding: clamp(44px, 8vw, 84px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-plate {
  margin-top: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line);
  border-bottom: 0;
  overflow: hidden;
  background: var(--panel);
}

.page-contact .contact-plate img {
  display: block;
  width: 100%;
  height: clamp(104px, 19vw, 196px);
  object-fit: cover;
  opacity: 0.6;
}

.page-contact .contact-datalist {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-datum {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--bg);
}

.page-contact .contact-datum__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-datum__val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.5;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .contact-datum__val--sm {
  font-size: 13px;
  line-height: 1.7;
}

.page-contact .contact-channels__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  max-width: min(100%, 620px);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 02 问题分流 ---------- */
.page-contact .contact-routing {
  padding: clamp(44px, 8vw, 84px) 0;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-tabs {
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .contact-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-tabs__tab {
  flex: 1 1 200px;
  position: relative;
  appearance: none;
  border: 0;
  border-left: 3px solid transparent;
  background: var(--bg-alt);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 15px 16px;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-tabs__tab:hover {
  color: var(--ink);
}

.page-contact .contact-tabs__tab[aria-selected="true"] {
  color: var(--ink);
  background: var(--panel);
  border-left-color: var(--amber);
}

.page-contact .contact-tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .contact-panel {
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--bg);
  padding: clamp(22px, 4vw, 42px);
}

.page-contact .contact-panel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
}

.page-contact .contact-panel__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .contact-panel__lead {
  margin: 0 0 20px;
  max-width: min(100%, 600px);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .contact-points__item {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .contact-points__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 12px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .contact-panel__aside {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-panel__aside-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-aside-link {
  display: block;
  padding: 11px 14px;
  border: 1px solid var(--line);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .contact-aside-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-contact .contact-aside-link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 03 响应时效 ---------- */
.page-contact .contact-response {
  padding: clamp(44px, 8vw, 84px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-response__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .contact-response__body .prose {
  margin: 0;
  max-width: min(100%, 620px);
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-response__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-response__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 22px;
  background: var(--bg-alt);
}

.page-contact .contact-response__stats .stat__value {
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-contact .contact-response__stats .stat__label {
  font-size: 13px;
  color: var(--muted);
}

.page-contact .contact-response__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

/* ---------- 04 合作方向 ---------- */
.page-contact .contact-partners {
  padding: clamp(44px, 8vw, 84px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.5vw, 24px);
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .contact-partner {
  display: flex;
  flex-direction: column;
}

.page-contact .contact-partner .card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-contact .contact-partner__desc {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-partner .card__actions {
  margin-top: auto;
  padding-top: 18px;
}

/* ---------- 运营信息 ---------- */
.page-contact .contact-registry {
  padding: clamp(36px, 6vw, 68px) 0 clamp(48px, 8vw, 92px);
}

.page-contact .contact-registry__title {
  margin: 0 0 18px;
  font-size: clamp(18px, 2vw, 22px);
}

.page-contact .contact-registry__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-registry__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 20px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-registry__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-contact .contact-registry__val {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink);
}

.page-contact .contact-registry__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .contact-response__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .contact-datalist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-partners__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-panel__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
  }

  .page-contact .contact-panel__aside {
    padding-top: 0;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-left: clamp(16px, 2vw, 26px);
  }

  .page-contact .contact-response__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-tabs__tab,
  .page-contact .contact-aside-link {
    transition: none;
  }
}