.page-contact {
  --pc-gap: clamp(2.25rem, 6vw, 5rem);
  padding-bottom: clamp(2rem, 6vw, 4rem);
}

.page-contact .section {
  padding-block: clamp(2.25rem, 5.5vw, 4.25rem);
}

.page-contact .section--tight {
  padding-block: clamp(1.75rem, 4.5vw, 3.25rem);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-intro {
  padding-top: clamp(0.75rem, 2.5vw, 1.75rem);
}

.page-contact .contact-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: end;
}

.page-contact .contact-hero__title {
  margin: 0.7rem 0 0;
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.6vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text-100);
  max-width: 18ch;
}

.page-contact .contact-hero__title::after {
  content: "";
  display: block;
  width: clamp(3.5rem, 14vw, 8rem);
  height: 3px;
  margin-top: clamp(1rem, 3vw, 1.6rem);
  border-radius: 2px;
  background: linear-gradient(
    90deg,
    var(--cyan-400) 0%,
    var(--cyan-400) 47%,
    var(--gold-400) 53%,
    var(--gold-400) 100%
  );
}

.page-contact .contact-hero .lede {
  margin-top: clamp(1rem, 3vw, 1.5rem);
  max-width: 36ch;
}

.page-contact .contact-hero__aside {
  border-left: 1px solid var(--line-400);
  padding-left: clamp(1rem, 4vw, 1.75rem);
}

.page-contact .contact-hero__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-400);
}

.page-contact .contact-hero__batch {
  margin: 0.6rem 0 0;
  font-family: var(--font-cn);
  font-weight: 700;
  font-size: clamp(1.1rem, 3vw, 1.35rem);
  letter-spacing: -0.01em;
  color: var(--cyan-400);
}

.page-contact .contact-hero__meta {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--text-100);
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-hero__note {
  margin: 1rem 0 0;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--text-400);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: clamp(1.4rem, 4vw, 2.25rem);
  background: var(--ink-700);
  border: 1px solid var(--line-400);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 82%);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 18px 44px -26px var(--accent);
}

.page-contact .channel-card__head {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
}

.page-contact .channel-card__no {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-contact .channel-card__kind {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-100);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-latin);
  font-size: clamp(1.15rem, 4.4vw, 1.65rem);
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text-100);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-contact .channel-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-contact .channel-card__facts {
  margin: 0.35rem 0 0;
  display: grid;
  gap: 0.85rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-400);
}

.page-contact .channel-card__facts > div {
  display: grid;
  gap: 0.25rem;
}

.page-contact .channel-card__facts dt {
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--text-400);
}

.page-contact .channel-card__facts dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-100);
}

.page-contact .channel-card__note {
  margin: auto 0 0;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line-400);
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--text-400);
}

.page-contact .channel-visual {
  margin: clamp(1.25rem, 4vw, 2rem) 0 0;
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-400);
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: 0.85rem;
  padding: clamp(1.15rem, 3.5vw, 1.7rem) 0;
  border-bottom: 1px solid var(--line-400);
  position: relative;
}

.page-contact .prep-item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 2px;
  height: 0;
  background: var(--accent);
  transform: translateY(-50%);
  transition: height var(--dur) var(--ease);
}

.page-contact .prep-item:hover::after {
  height: 60%;
}

.page-contact .prep-item__no {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--accent);
  padding-top: 0.25rem;
  font-variant-numeric: tabular-nums;
}

.page-contact .prep-item__title {
  margin: 0 0 0.4rem;
  font-family: var(--font-cn);
  font-size: clamp(1rem, 2.6vw, 1.12rem);
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--text-100);
}

.page-contact .prep-item__body p {
  margin: 0;
  max-width: 34em;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--text-400);
}

/* ---------- 受理范围 ---------- */
.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-400);
  border: 1px solid var(--line-400);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .scope-col {
  background: var(--ink-700);
  padding: clamp(1.35rem, 4vw, 2rem);
}

.page-contact .scope-col--in {
  border-left: 2px solid var(--cyan-400);
}

.page-contact .scope-col--out {
  border-left: 2px solid var(--gold-400);
}

.page-contact .scope-col__title {
  margin: 0 0 1rem;
  font-family: var(--font-cn);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-100);
}

.page-contact .scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-contact .scope-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-400);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.page-contact .scope-col--in .scope-list li::before {
  background: var(--cyan-400);
}

.page-contact .scope-col--out .scope-list li::before {
  background: var(--gold-400);
}

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .rhythm-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.45rem;
  padding: clamp(0.95rem, 3vw, 1.3rem) 0;
  border-bottom: 1px solid var(--line-400);
}

.page-contact .rhythm-item:first-child {
  border-top: 1px solid var(--line-400);
}

.page-contact .rhythm-item__key {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-400);
}

.page-contact .rhythm-item__txt {
  margin: 0;
  max-width: 46em;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--text-100);
}

/* ---------- 关联阅读 ---------- */
.page-contact .read-more {
  margin-top: clamp(1.75rem, 5vw, 2.75rem);
  padding: clamp(1.25rem, 4vw, 1.75rem);
  border: 1px solid var(--line-400);
  border-radius: var(--radius);
  background: var(--glass-500);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-contact .read-more__label {
  margin: 0 0 1rem;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--text-400);
}

.page-contact .read-more__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-contact .read-more__link {
  display: inline-block;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-100);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-left: 0;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .read-more__link:hover,
.page-contact .read-more__link:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 属地与备案 ---------- */
.page-contact .contact-region {
  padding-bottom: clamp(1.5rem, 5vw, 3rem);
}

.page-contact .region-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 4vw, 2.25rem);
  align-items: start;
}

.page-contact .region-map {
  margin: 0;
}

.page-contact .region-facts {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line-400);
  border: 1px solid var(--line-400);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .region-fact {
  background: var(--ink-700);
  padding: 0.95rem clamp(1rem, 3vw, 1.4rem);
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 0.75rem;
  align-items: baseline;
}

.page-contact .region-fact dt {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--text-400);
}

.page-contact .region-fact dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-100);
  font-variant-numeric: tabular-nums;
}

.page-contact .region-note {
  margin: clamp(1.25rem, 4vw, 1.9rem) 0 0;
  max-width: 58em;
  font-size: 0.8rem;
  line-height: 1.85;
  color: var(--text-400);
}

.page-contact .region-note__link {
  color: var(--text-100);
  text-decoration: none;
  border-bottom: 1px solid var(--line-400);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .region-note__link:hover,
.page-contact .region-note__link:focus-visible {
  color: var(--gold-400);
  border-bottom-color: var(--gold-400);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.4rem;
  }

  .page-contact .scope-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .rhythm-item {
    grid-template-columns: 8rem 1fr;
    gap: 1.25rem;
    align-items: baseline;
  }

  .page-contact .region-fact {
    grid-template-columns: 8rem 1fr;
  }
}

@media (min-width: 940px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(2.5rem, 6vw, 5rem);
  }

  .page-contact .region-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(2rem, 5vw, 3.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .prep-item::after,
  .page-contact .read-more__link,
  .page-contact .region-note__link {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }

  .page-contact .prep-item:hover::after {
    height: 0;
  }
}