.page-contact {
  --contact-row-pad: 22px;
  --contact-key-w: 132px;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
}

.page-contact .section {
  padding: clamp(46px, 8vw, 84px) 0;
}

.page-contact .section--tight {
  padding: clamp(34px, 6vw, 60px) 0;
}

.page-contact .section--stone {
  background: linear-gradient(180deg, var(--ink) 0%, var(--stone) 42%, var(--ink) 100%);
}

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

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__map {
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.75;
}

.page-contact .contact-hero__map svg {
  width: 100%;
  height: 100%;
  display: block;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 30px;
}

.page-contact .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--aurora);
  border-bottom-color: var(--aurora);
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--aurora);
  margin: 0;
  text-transform: uppercase;
}

.page-contact h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 56px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  max-width: 20ch;
}

.page-contact .lede {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .tag-row {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 28px 0 0;
}

.page-contact .tag-row .tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text);
  background: var(--aurora-wash);
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 999px;
}

.page-contact .tag-row .tag--muted {
  background: var(--violet-wash);
  color: var(--muted);
}

.page-contact .anchor-rail {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  margin-top: 36px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}

.page-contact .anchor-rail::-webkit-scrollbar {
  display: none;
}

.page-contact .anchor-link {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .anchor-link:hover,
.page-contact .anchor-link:focus-visible,
.page-contact .anchor-link.is-active {
  color: var(--aurora);
  border-color: var(--aurora);
  outline: none;
}

/* ---------- 通用双栏 ---------- */
.page-contact .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}

.page-contact .split--reverse .split__side {
  order: -1;
}

.page-contact .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: 30px;
}

.page-contact .section-head .index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--violet);
}

.page-contact .section-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 4.6vw, 32px);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin: 0;
}

.page-contact .section-head p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 联络信息 ---------- */
.page-contact .liaison-list {
  border-top: 1px solid var(--line);
}

.page-contact .liaison-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: var(--contact-row-pad) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .liaison-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .liaison-val {
  font-family: var(--font-mono);
  font-size: clamp(16px, 4.2vw, 24px);
  letter-spacing: -0.01em;
  line-height: 1.5;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .liaison-val--long {
  font-size: clamp(15px, 3.4vw, 19px);
  color: var(--text);
}

.page-contact .liaison-val--soft {
  color: var(--aurora);
}

.page-contact .liaison-note {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-contact .copy-chip {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--aurora);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  transition: border-color 180ms var(--ease), color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-contact .copy-chip:hover,
.page-contact .copy-chip:focus-visible {
  border-color: var(--aurora);
  background: var(--aurora-wash);
  outline: none;
}

.page-contact .copy-chip.is-copied {
  color: var(--pass);
  border-color: var(--pass);
  background: var(--pass-wash);
}

/* ---------- 侧栏 ---------- */
.page-contact .split__side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-contact .media-frame {
  margin: 0;
  background: var(--nebula);
  border: 1px solid var(--line);
  overflow: hidden;
}

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

.page-contact .media-caption {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  margin: 0;
}

.page-contact .side-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  padding-left: 14px;
  border-left: 2px solid var(--line);
}

/* ---------- 邮件场景卡片 ---------- */
.page-contact .mail-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .mail-card {
  background: var(--nebula);
  border: 1px solid var(--line);
  padding: 22px 20px;
}

.page-contact .mail-card:nth-child(even) {
  background: var(--stone);
}

.page-contact .mail-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-contact .mail-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  margin: 10px 0 8px;
}

.page-contact .mail-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 自查清单 ---------- */
.page-contact .check-list {
  list-style: none;
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
}

.page-contact .check-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--nebula);
  border: 1px solid var(--line);
  padding: 16px;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .check-item.is-checked {
  background: var(--pass-wash);
  border-color: rgba(78, 216, 138, 0.4);
}

.page-contact .check-input {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--pass);
  cursor: pointer;
}

.page-contact .check-label {
  font-size: 15px;
  line-height: 1.75;
  cursor: pointer;
}

.page-contact .check-item.is-checked .check-label {
  color: var(--text);
}

.page-contact .check-footnote {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 校验色块 ---------- */
.page-contact .alert-panel {
  background: var(--alert-wash);
  border-left: 3px solid var(--alert);
  padding: 20px 18px;
}

.page-contact .alert-panel__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--alert);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.page-contact .alert-panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 视觉分隔 ---------- */
.page-contact .sequence-figure img {
  max-height: 340px;
}

/* ---------- 边界 ---------- */
.page-contact .boundary {
  border-left: 3px solid var(--alert);
  background: var(--alert-wash);
  padding: 26px 20px;
}

.page-contact .boundary-list {
  list-style: none;
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
}

.page-contact .boundary-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
}

.page-contact .boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 9px;
  height: 2px;
  background: var(--alert);
}

/* ---------- 处理顺序 ---------- */
.page-contact .order-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
}

.page-contact .order-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .order-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 6vw, 40px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(53, 224, 208, 0.7);
  letter-spacing: -0.02em;
}

.page-contact .order-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin: 4px 0 8px;
  letter-spacing: -0.01em;
}

.page-contact .order-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 收束面板 ---------- */
.page-contact .closing-panel {
  margin-top: 34px;
  background: var(--nebula);
  border: 1px solid var(--line);
  padding: 26px 22px;
}

.page-contact .closing-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.page-contact .closing-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 700px) {
  .page-contact .mail-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .mail-card:nth-child(3n) {
    transform: translateY(10px);
  }

  .page-contact .liaison-row {
    grid-template-columns: var(--contact-key-w) minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }

  .page-contact .copy-chip {
    justify-self: end;
  }
}

@media (min-width: 960px) {
  .page-contact .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 46px;
  }

  .page-contact .split--reverse {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-contact .split--reverse .split__side {
    order: 0;
  }

  .page-contact h1 {
    font-size: clamp(42px, 4.6vw, 58px);
  }

  .page-contact .split__side {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-contact .liaison-val {
    font-size: 24px;
  }

  .page-contact .liaison-row {
    padding: 26px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-chip,
  .page-contact .anchor-link,
  .page-contact .check-item {
    transition: none;
  }

  .page-contact .mail-card:nth-child(3n) {
    transform: none;
  }
}