.page-contact {
  --pc-on-signal: #04140F;
  --pc-signal-line: rgba(4, 20, 15, 0.28);
  --pc-signal-faint: rgba(4, 20, 15, 0.68);
  --pc-hover: #1B2B5A;
}

.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- 面包屑与首屏 ---------- */
.page-contact .breadcrumbs__item--sep {
  color: var(--line);
  margin: 0 6px;
}

.page-contact .contact-hero {
  padding: clamp(22px, 5vw, 52px) 0 clamp(24px, 4vw, 44px);
}

.page-contact .contact-hero__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: clamp(18px, 4vw, 34px) 0 16px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .contact-hero__kicker-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  padding: 4px 7px;
  background: var(--amber);
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-contact .contact-hero__title {
  margin: 0 0 clamp(16px, 3vw, 26px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 10.5vw, 104px);
  line-height: 0.94;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  max-width: 64ch;
  margin: 0 0 clamp(24px, 4vw, 42px);
  color: var(--muted);
}

.page-contact .contact-hero__figure {
  margin: 0;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 海报式联系卡片 ---------- */
.page-contact .contact-board-section {
  padding: 0 0 clamp(44px, 7vw, 86px);
}

.page-contact .contact-board {
  display: grid;
  grid-template-columns: 1fr;
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  background: var(--ink-2);
}

.page-contact .contact-board__signal {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(24px, 5vw, 46px);
  background: var(--signal);
  color: var(--pc-on-signal);
}

.page-contact .contact-board__flag {
  align-self: flex-start;
  margin: 0;
  padding: 5px 11px;
  border: 1px solid var(--pc-signal-line);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-contact .contact-board__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 5.2vw, 38px);
  font-weight: 700;
  line-height: 1.06;
  color: var(--pc-on-signal);
}

.page-contact .contact-line {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 16px;
  border-top: 2px solid var(--pc-signal-line);
}

.page-contact .contact-line__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--pc-signal-faint);
}

.page-contact .contact-line__value {
  font-family: var(--font-num);
  font-size: clamp(13px, 3.6vw, 21px);
  font-weight: 600;
  line-height: 1.32;
  overflow-wrap: anywhere;
  color: var(--pc-on-signal);
}

.page-contact .contact-line__copy {
  align-self: flex-start;
  margin-top: 4px;
  padding: 7px 15px;
  border: 2px solid var(--pc-signal-line);
  background: transparent;
  color: var(--pc-on-signal);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background-color 140ms ease, color 140ms ease, transform 140ms ease;
}

.page-contact .contact-line__copy:hover {
  background: var(--pc-on-signal);
  color: var(--signal);
}

.page-contact .contact-line__copy:active {
  transform: translate(2px, 2px);
}

.page-contact .contact-board__hours {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 8px 0 0;
  padding-top: 16px;
  border-top: 2px solid var(--pc-signal-line);
  font-family: var(--font-num);
  font-size: 14px;
  font-weight: 600;
  color: var(--pc-on-signal);
}

.page-contact .contact-board__hours-key {
  padding: 3px 9px;
  background: var(--pc-on-signal);
  color: var(--signal);
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-contact .contact-board__aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: clamp(24px, 5vw, 46px);
  background: var(--ink-3);
  border-top: var(--edge);
}

.page-contact .contact-board__aside-label {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .aside-list li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .aside-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 12px;
  height: 2px;
  background: var(--signal);
}

.page-contact .contact-board__aside-note {
  margin: auto 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 章节通用 ---------- */
.page-contact .contact-sec {
  padding: clamp(44px, 8vw, 92px) 0;
}

.page-contact .contact-sec--tint {
  background: var(--ink-2);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .cs-head {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: clamp(14px, 2.4vw, 26px);
  row-gap: 8px;
  align-items: baseline;
  margin-bottom: clamp(26px, 4vw, 44px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .cs-head__num {
  grid-row: 1 / 3;
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(20px, 4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-contact .cs-head__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 5.4vw, 44px);
  font-weight: 700;
  line-height: 1.06;
  color: var(--paper);
}

.page-contact .cs-head__note {
  grid-column: 2;
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 渠道条目 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-3);
  border: var(--edge);
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.page-contact .channel:hover {
  background: var(--pc-hover);
  border-color: var(--signal);
  transform: translateY(-3px);
}

.page-contact .channel__num {
  position: absolute;
  top: clamp(20px, 3vw, 30px);
  right: clamp(20px, 3vw, 30px);
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  transition: color 160ms ease;
}

.page-contact .channel:hover .channel__num {
  color: var(--amber);
}

.page-contact .channel__title {
  margin: 0;
  padding-right: 44px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.6vw, 26px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--paper);
}

.page-contact .channel__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .channel__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-num);
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
  color: var(--signal);
}

/* ---------- 合作与媒体 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-contact .coop-card {
  padding: clamp(22px, 3.4vw, 34px);
  background: var(--ink-3);
  border: var(--edge);
  box-shadow: var(--shadow-amber);
}

.page-contact .coop-card--signal {
  border-left: 6px solid var(--amber);
}

.page-contact .coop-card__label {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-contact .coop-card__code {
  margin: 0 0 10px;
  padding: 11px 14px;
  background: var(--ink);
  border: 1px solid var(--line);
  font-family: var(--font-num);
  font-size: clamp(13px, 3.4vw, 16px);
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .coop-card__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .coop-details {
  border: var(--edge);
  background: var(--ink);
}

.page-contact .coop-details__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px clamp(20px, 3vw, 28px);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(18px, 3.4vw, 23px);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .coop-details__summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-details__summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 24px;
  line-height: 1;
  color: var(--signal);
}

.page-contact .coop-details[open] .coop-details__summary::after {
  content: "–";
}

.page-contact .coop-details__list {
  list-style: none;
  margin: 0;
  padding: 0 clamp(20px, 3vw, 28px) 4px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .coop-details__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .coop-details__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 2px;
  background: var(--amber);
}

.page-contact .coop-details__list strong {
  color: var(--paper);
  font-weight: 600;
}

.page-contact .coop-details__note {
  margin: 0;
  padding: 14px clamp(20px, 3vw, 28px) 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--signal);
}

/* ---------- 准备清单 ---------- */
.page-contact .prepare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .prepare-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-contact .prepare-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  padding: 18px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .prepare-item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .prepare-item__num {
  grid-row: 1 / 3;
  padding-top: 4px;
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--signal);
}

.page-contact .prepare-item__title {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .prepare-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .prepare-figure {
  margin: 0;
  border: var(--edge);
  background: var(--ink-3);
  box-shadow: var(--shadow-hard);
}

.page-contact .prepare-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 联系地址 ---------- */
.page-contact .addr-block {
  display: grid;
  gap: 20px;
}

.page-contact .addr-block__addr {
  margin: 0;
  padding-left: clamp(14px, 2.4vw, 24px);
  border-left: 6px solid var(--signal);
  font-family: var(--font-display);
  font-size: clamp(21px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1.32;
  color: var(--paper);
}

.page-contact .addr-block__text {
  margin: 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .addr-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-contact .addr-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .addr-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--amber);
}

/* ---------- 站点信息 ---------- */
.page-contact .facts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-contact .fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .fact__label {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-contact .fact__value {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(15px, 3.6vw, 19px);
  font-weight: 600;
  line-height: 1.4;
  overflow-wrap: anywhere;
  color: var(--paper);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-more {
  padding: clamp(38px, 6vw, 70px) 0 clamp(50px, 8vw, 92px);
}

.page-contact .contact-more__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.4vw, 34px);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .contact-more__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.page-contact .contact-more__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-more__nav a {
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 140ms ease, border-color 140ms ease;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    align-items: start;
    gap: 26px;
  }

  .page-contact .prepare-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 42px;
  }

  .page-contact .addr-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 26px;
  }

  .page-contact .facts-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 clamp(18px, 3vw, 34px);
  }

  .page-contact .fact {
    padding: 22px 0;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-board {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-contact .contact-board__aside {
    border-top: 0;
    border-left: var(--edge);
    padding-left: clamp(30px, 3.8vw, 54px);
  }

  .page-contact .channel-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border: var(--edge);
    background: var(--ink-2);
  }

  .page-contact .channel {
    border: 0;
    background: transparent;
  }

  .page-contact .channel + .channel {
    border-left: 1px solid var(--line-soft);
  }

  .page-contact .channel:hover {
    background: var(--ink-3);
    transform: none;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}