.page-contact {
  --contact-gap: 20px;
  --contact-gap-lg: 40px;
}

.page-contact .crumb {
  margin-top: 20px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: 12px 56px;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--teal) 55%, transparent 100%);
  opacity: 0.55;
}

.page-contact .contact-hero__grid {
  gap: var(--contact-gap-lg);
  align-items: start;
}

.page-contact .contact-hero__lede .title-xl {
  margin: 10px 0 18px;
  max-width: 18ch;
}

.page-contact .contact-hero__lede .lede {
  max-width: 46ch;
}

.page-contact .contact-hero__figure .ratio-4x3 {
  border: 1px solid var(--hair);
  background: var(--sheet);
}

.page-contact .contact-hero__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .contact-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  background: var(--hair-2);
  border: 1px solid var(--hair);
}

.page-contact .contact-facts__item {
  background: var(--sheet);
  padding: 14px 16px;
}

.page-contact .contact-facts__item dt {
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gray);
}

.page-contact .contact-facts__item dd {
  margin: 6px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-contact .contact-facts__item dd .stat-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--gold);
  font-size: 20px;
}

/* ---------- 四条提交路径 ---------- */
.page-contact .contact-routes__intro {
  max-width: 54ch;
  margin: 12px 0 32px;
}

.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap-lg);
}

.page-contact .contact-tabs .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hair);
}

.page-contact .contact-tabs .tab {
  flex: 1 1 auto;
  font-family: var(--font-ui);
  font-size: 14px;
  letter-spacing: 0.02em;
  padding: 10px 14px;
  border: 1px solid var(--hair);
  border-radius: 2px;
  background: var(--sheet);
  color: var(--ink-2);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .contact-tabs .tab:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.page-contact .contact-tabs .tab[aria-selected="true"] {
  border-color: var(--gold);
  border-left-width: 3px;
  color: var(--ink);
  font-weight: 700;
}

.page-contact .contact-tabs .tab:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-contact .contact-tabs .tabpanels {
  padding-top: 26px;
}

.page-contact .contact-tabs .tabpanel .title-sm {
  margin: 0 0 12px;
}

.page-contact .contact-tabs .tabpanel p {
  margin: 0 0 18px;
  max-width: 56ch;
}

.page-contact .path-meta {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-contact .path-meta > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hair-2);
}

.page-contact .path-meta dt {
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gray);
}

.page-contact .path-meta dd {
  margin: 0;
  font-size: 16px;
  color: var(--ink-2);
}

.page-contact .path-meta--plain {
  margin-top: 24px;
}

.page-contact .path-meta__more {
  margin-top: 14px;
  font-size: 15px;
  color: var(--gray);
}

.page-contact .path-meta__more a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-lt);
}

.page-contact .path-meta__more a:hover {
  border-bottom-color: var(--teal);
}

/* 材料清单卡 */
.page-contact .contact-kit {
  border: 1px solid var(--hair);
  border-top: 3px solid var(--gold);
  background: var(--sheet);
  padding: 24px 22px 26px;
}

.page-contact .contact-kit .title-sm {
  margin: 0 0 16px;
}

.page-contact .contact-kit__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .contact-kit__list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 8px;
  padding: 11px 0;
  border-bottom: 1px solid var(--hair-2);
  font-size: 15.5px;
  color: var(--ink-2);
}

.page-contact .contact-kit__list li .mono {
  font-size: 13px;
  color: var(--gold);
}

.page-contact .contact-kit__note {
  margin: 18px 0 16px;
  font-size: 15px;
  color: var(--gray);
}

.page-contact .contact-kit__status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 官方渠道 ---------- */
.page-contact .contact-channels {
  position: relative;
  overflow: hidden;
}

.page-contact .contact-channels::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  border: 1px solid var(--hair-dark);
  border-radius: 50%;
  pointer-events: none;
}

.page-contact .contact-channels .eyebrow {
  color: var(--gold-lt);
}

.page-contact .contact-channels .title-lg {
  color: var(--paper);
  margin: 10px 0 14px;
}

.page-contact .contact-channels__intro {
  max-width: 56ch;
  color: rgba(242, 244, 243, 0.72);
  margin: 0 0 32px;
}

.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .channel-card {
  background: rgba(242, 244, 243, 0.05);
  border: 1px solid var(--hair-dark);
  border-left: 3px solid var(--gold);
  padding: 22px 22px 24px;
  backdrop-filter: blur(4px);
}

.page-contact .channel-card--teal {
  border-left-color: var(--teal);
}

.page-contact .channel-card__label {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-contact .channel-card__value {
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
  color: var(--gold-lt);
  word-break: break-all;
}

.page-contact .channel-card--teal .channel-card__value {
  color: var(--teal-lt);
}

.page-contact .channel-card__desc {
  margin: 0 0 14px;
  font-size: 15.5px;
  color: rgba(242, 244, 243, 0.82);
}

.page-contact .channel-card__meta {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--gray);
  padding-top: 12px;
  border-top: 1px dashed var(--hair-dark);
}

.page-contact .contact-channels__rule {
  margin-top: 26px;
  padding: 18px 20px;
  border-left: 2px solid var(--gold);
  background: rgba(195, 155, 39, 0.08);
}

.page-contact .contact-channels__rule p {
  margin: 0;
  font-size: 15.5px;
  color: rgba(242, 244, 243, 0.88);
}

.page-contact .contact-channels__rule strong {
  color: var(--gold-lt);
  font-family: var(--font-head);
}

/* ---------- 地址 ---------- */
.page-contact .contact-address__grid {
  gap: var(--contact-gap-lg);
  align-items: start;
}

.page-contact .contact-address .img-frame .ratio-3x4 {
  border: 1px solid var(--hair);
  background: var(--sheet);
}

.page-contact .contact-address .img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .contact-address__body .title-lg {
  margin: 10px 0 16px;
}

.page-contact .contact-address__body > p {
  max-width: 54ch;
}

.page-contact .contact-address__block {
  margin: 26px 0 6px;
  padding: 18px 20px;
  background: var(--sheet);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--teal);
}

.page-contact .contact-address__label {
  margin: 0 0 8px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-contact .contact-address__value {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink);
}

/* ---------- 流程带 ---------- */
.page-contact .contact-flow {
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--sheet) 100%);
  border-top: 1px solid var(--hair);
}

.page-contact .contact-flow .title-md {
  margin: 10px 0 28px;
}

.page-contact .flow-band {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-contact .flow-band__step {
  background: var(--sheet);
  padding: 22px 20px 24px;
  position: relative;
}

.page-contact .flow-band__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.page-contact .flow-band__step:hover::before,
.page-contact .flow-band__step:focus-within::before {
  transform: scaleX(1);
}

.page-contact .flow-band__no {
  display: block;
  font-size: 26px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-contact .flow-band__title {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-contact .flow-band__step p {
  margin: 0;
  font-size: 15.5px;
  color: var(--ink-2);
}

.page-contact .contact-flow__tail {
  margin: 26px 0 0;
  max-width: 62ch;
  font-size: 15.5px;
  color: var(--gray);
  padding-left: 14px;
  border-left: 2px solid var(--teal-lt);
}

/* ---------- 备案与站点信息 ---------- */
.page-contact .contact-legal__box {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}

.page-contact .contact-legal__col {
  background: var(--sheet);
  padding: 20px 20px 22px;
}

.page-contact .contact-legal__label {
  margin: 0 0 10px;
  font-family: var(--font-ui);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-contact .contact-legal__value {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}

.page-contact .contact-legal__value a {
  font-family: var(--font-ui);
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-lt);
}

.page-contact .contact-legal__value a:hover {
  border-bottom-color: var(--teal);
}

.page-contact .contact-legal__note {
  margin: 0;
  font-size: 14px;
  color: var(--gray);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-contact {
    --contact-gap-lg: 56px;
  }

  .page-contact .contact-hero {
    padding-block: 36px 80px;
  }

  .page-contact .contact-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: 560px;
  }

  .page-contact .contact-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .contact-kit {
    position: sticky;
    top: 92px;
  }

  .page-contact .contact-tabs .tablist {
    flex-wrap: nowrap;
    gap: 6px;
  }

  .page-contact .contact-tabs .tab {
    flex: 1 1 0;
    white-space: nowrap;
  }

  .page-contact .path-meta > div {
    grid-template-columns: 130px 1fr;
    gap: 14px;
    align-items: baseline;
  }

  .page-contact .contact-channels__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-contact .contact-address__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-contact .flow-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .flow-band__step {
    padding: 26px 22px 30px;
  }

  .page-contact .contact-legal__box {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-tabs .tab,
  .page-contact .flow-band__step::before {
    transition: none;
  }
}