.page-contact {
  --contact-pad: 1.35rem;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 2.25rem 0 2.5rem;
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: clamp(2rem, 8vw, 3.4rem);
  line-height: 1.06;
  margin: 0.75rem 0 1.1rem;
  max-width: 22ch;
}

.page-contact .contact-hero__lede {
  font-size: clamp(1rem, 2.6vw, 1.125rem);
  line-height: 1.75;
  color: var(--muted);
  max-width: 48ch;
  margin: 0 0 1.75rem;
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 0;
  padding: 1.1rem 0 0;
  border-top: var(--edge);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2.25rem;
}

.page-contact .contact-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 0;
}

.page-contact .contact-hero__fact-num {
  font-family: var(--font-data);
  font-size: clamp(1.05rem, 4vw, 1.5rem);
  line-height: 1.15;
  color: var(--signal);
  letter-spacing: -0.01em;
}

.page-contact .contact-hero__fact-label {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 顶部横幅 ---------- */
.page-contact .contact-banner {
  margin: 0;
  position: relative;
  border-top: var(--edge);
  border-bottom: var(--edge);
  background: var(--panel);
  overflow: hidden;
}

.page-contact .contact-banner__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-contact .contact-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(220, 237, 247, 0.06) 0 1px,
    transparent 1px 5px
  );
}

/* ---------- 通道卡片 ---------- */
.page-contact .contact-channels {
  padding-top: 3rem;
}

.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: var(--contact-pad);
  border: var(--edge);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-hard-lg);
  border-color: var(--signal);
}

.page-contact .channel-card__kind {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1rem;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--signal);
}

.page-contact .channel-card__kind::before {
  content: "";
  width: 18px;
  height: 2px;
  background: var(--signal);
}

.page-contact .channel-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  margin: 0 0 0.9rem;
}

.page-contact .channel-card__value {
  font-family: var(--font-data);
  font-size: clamp(1rem, 3.4vw, 1.125rem);
  line-height: 1.4;
  color: var(--text);
  margin: 0 0 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--steel);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-card__value--mail {
  color: var(--signal);
}

.page-contact .channel-card__value--phone {
  color: var(--orange);
  font-size: clamp(1.5rem, 6vw, 2rem);
  letter-spacing: 0.01em;
}

.page-contact .channel-card__note {
  margin: auto 0 0;
  padding-top: 0.9rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 分段切换 ---------- */
.page-contact .contact-routes {
  padding-top: 3rem;
}

.page-contact .contact-tabs {
  margin-top: 1.75rem;
  border: var(--edge);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-tabs .tabs__list {
  display: flex;
  gap: 0;
  overflow-x: auto;
  border-bottom: var(--edge);
  background: rgba(5, 11, 24, 0.5);
  scrollbar-width: thin;
}

.page-contact .contact-tabs .tabs__tab {
  flex: 0 0 auto;
  appearance: none;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.85rem 1.05rem;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-contact .contact-tabs .tabs__tab:hover {
  color: var(--text);
  background: rgba(27, 53, 87, 0.45);
}

.page-contact .contact-tabs .tabs__tab[aria-selected="true"] {
  color: var(--text);
  border-bottom-color: var(--signal);
  background: rgba(59, 255, 155, 0.07);
}

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

.page-contact .contact-tabs .tabs__panel {
  padding: 1.5rem 1.25rem 1.75rem;
}

.page-contact .contact-tabs .tabs__panel[hidden] {
  display: none;
}

.page-contact .contact-tabs .tabs__panel:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -4px;
}

.page-contact .route-panel__title {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 4vw, 1.35rem);
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.6rem;
}

.page-contact .route-panel__lede {
  margin: 0 0 1.15rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .route-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-contact .route-panel__list li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .route-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border: 2px solid var(--signal);
}

/* ---------- 提交要点 ---------- */
.page-contact .contact-checklist {
  padding-top: 3rem;
}

.page-contact .contact-checklist__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1.75rem;
}

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

.page-contact .checklist-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-contact .checklist-figure figcaption {
  padding: 0.85rem 1rem;
  border-top: var(--edge);
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .checklist-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--edge);
}

.page-contact .checklist-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: var(--edge);
}

.page-contact .checklist-list__index {
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 0.25rem;
}

.page-contact .checklist-list__term {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.3rem;
}

.page-contact .checklist-list__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: 52ch;
}

/* ---------- 处理节奏 ---------- */
.page-contact .contact-pace {
  padding-top: 3rem;
}

.page-contact .pace-list {
  list-style: none;
  margin: 1.75rem 0 0 0.5rem;
  padding: 0;
  border-left: 2px solid var(--steel);
}

.page-contact .pace-list__item {
  position: relative;
  padding: 0 0 1.6rem 1.5rem;
}

.page-contact .pace-list__item:last-child {
  padding-bottom: 0;
}

.page-contact .pace-list__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--signal);
}

.page-contact .pace-list__step {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .pace-list__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.35rem;
}

.page-contact .pace-list__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- 长期协作 ---------- */
.page-contact .contact-coop {
  padding-top: 3rem;
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.75rem;
}

.page-contact .coop-card {
  min-width: 0;
  padding: var(--contact-pad);
  border: var(--edge);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
}

.page-contact .coop-card__num {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin: 0 0 0.7rem;
  font-family: var(--font-data);
  font-size: clamp(1.75rem, 7vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--signal);
}

.page-contact .coop-card__unit {
  font-family: var(--font-body);
  font-size: 0.875rem;
  letter-spacing: 0;
  color: var(--muted);
}

.page-contact .coop-card__title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 0.45rem;
}

.page-contact .coop-card__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-coop__note {
  margin: 1.75rem 0 0;
  padding: 1.15rem 1.25rem;
  border-left: 3px solid var(--orange);
  background: rgba(12, 29, 56, 0.85);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text);
  max-width: 78ch;
}

/* ---------- 页尾冰纹分隔带 ---------- */
.page-contact .contact-frost {
  margin-top: 3.5rem;
  height: 72px;
  border-top: var(--edge);
  border-bottom: var(--edge);
  background:
    repeating-linear-gradient(
      115deg,
      rgba(220, 237, 247, 0.09) 0 2px,
      transparent 2px 9px
    ),
    linear-gradient(90deg, var(--panel), var(--ink));
}

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

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

  .page-contact .route-panel__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem 1.5rem;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding: 3.25rem 0 3rem;
  }

  .page-contact .contact-checklist__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-contact .contact-tabs .tabs__panel {
    padding: 2rem 1.75rem 2.25rem;
  }
}

@media (min-width: 1100px) {
  .page-contact .pace-list {
    margin-left: 0;
    padding-left: 0.5rem;
  }
}

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

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