.page-contact {
  --pc-wire: var(--rule);
  --pc-board-line: rgba(244, 239, 230, .18);
}

.page-contact .contact-hero {
  position: relative;
  padding: 26px 0 8px;
  isolation: isolate;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -12px;
  right: -8px;
  bottom: 38%;
  left: -8px;
  background: linear-gradient(to bottom right,
      rgba(34, 107, 102, .10) 0%,
      rgba(34, 107, 102, .10) 47%,
      transparent 47.05%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .hero-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--label);
  letter-spacing: .16em;
  color: var(--bronze);
}

.page-contact .hero-title {
  margin: 12px 0 0;
  font-family: var(--sans);
  font-weight: 900;
  font-size: clamp(28px, 7.2vw, 44px);
  line-height: 1.18;
  letter-spacing: -0.012em;
  color: var(--bronze-deep);
  max-width: 20ch;
}

.page-contact .hero-lead {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: var(--step1);
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .hero-split {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

/* 深铜青信息板 */
.page-contact .board {
  background: var(--bronze-deep);
  color: var(--paper);
  padding: 22px 20px 24px;
  border-left: 4px solid var(--amber);
  box-shadow: var(--shadow-slab-strong);
}

.page-contact .board__kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: var(--label);
  letter-spacing: .14em;
  color: var(--amber-light);
}

.page-contact .board__title {
  margin: 8px 0 16px;
  font-family: var(--sans);
  font-weight: 800;
  font-size: var(--step2);
  line-height: 1.35;
  color: var(--paper-2);
}

.page-contact .board__row {
  padding: 12px 0;
  border-top: 1px solid var(--pc-board-line);
}

.page-contact .board__key {
  display: block;
  margin-bottom: 5px;
  font-family: var(--mono);
  font-size: var(--label);
  letter-spacing: .1em;
  color: var(--slate);
}

.page-contact .board__val {
  display: block;
  font-family: var(--mono);
  font-size: var(--step0);
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--paper-2);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .board__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--pc-board-line);
  font-size: var(--step-2);
  line-height: 1.8;
  color: rgba(244, 239, 230, .78);
}

/* 线框路径示意 */
.page-contact .wire-wrap {
  padding: 4px 2px 0;
}

.page-contact .wire-cap {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: var(--step-1);
  letter-spacing: .02em;
  color: var(--slate-deep);
}

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

.page-contact .wire__node {
  position: relative;
  padding: 14px 12px 14px 30px;
  transition: background-color .18s ease;
}

.page-contact .wire__node::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--pc-wire);
}

.page-contact .wire__node:first-child::before {
  top: 50%;
}

.page-contact .wire__node:last-child::before {
  bottom: 50%;
}

.page-contact .wire__dot {
  position: absolute;
  left: 0;
  top: 50%;
  width: 15px;
  height: 15px;
  margin-top: -7.5px;
  border-radius: 50%;
  border: 1px solid var(--bronze);
  background: var(--paper-2);
  transition: background-color .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.page-contact .wire__node:hover {
  background: var(--wash);
}

.page-contact .wire__node:hover .wire__dot,
.page-contact .wire__node:focus-within .wire__dot {
  background: var(--amber-light);
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--wash-amber);
}

.page-contact .wire__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 10px;
}

.page-contact .wire__label {
  font-family: var(--serif);
  font-weight: 600;
  font-size: var(--step1);
  color: var(--bronze-deep);
}

.page-contact .wire__arrow {
  font-family: var(--mono);
  font-size: var(--step-2);
  color: var(--slate);
}

.page-contact .wire__target {
  font-family: var(--mono);
  font-size: var(--step-2);
  letter-spacing: .04em;
  color: var(--slate-deep);
}

/* 通用区块节奏 */
.page-contact .section-block {
  margin-top: 50px;
}

.page-contact .reach-grid {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}

/* 回复时段 */
.page-contact .hours {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  background: var(--rule-soft);
  border: 1px solid var(--rule);
}

.page-contact .hours__cell {
  background: var(--paper-2);
  padding: 18px 16px 20px;
}

.page-contact .hours__num {
  display: block;
  font-family: var(--mono);
  font-size: var(--step3);
  line-height: 1.25;
  letter-spacing: .02em;
  color: var(--bronze);
}

.page-contact .hours__label {
  display: block;
  margin-top: 8px;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--slate-deep);
}

.page-contact .hours__foot {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: var(--step0);
  line-height: 1.85;
  color: var(--ink);
}

/* 邮件写法清单 */
.page-contact .checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .checklist li {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule-soft);
}

.page-contact .checklist__mark {
  font-family: var(--mono);
  font-size: var(--step0);
  letter-spacing: .06em;
  color: var(--amber);
  padding-top: 2px;
}

.page-contact .checklist__title {
  margin: 0 0 6px;
  font-family: var(--sans);
  font-weight: 800;
  font-size: var(--step1);
  line-height: 1.5;
  color: var(--bronze-deep);
}

.page-contact .checklist__desc {
  margin: 0;
  font-size: var(--step0);
  line-height: 1.85;
  color: var(--ink);
  max-width: 58ch;
}

.page-contact .mail-tip {
  margin: 22px 0 0;
  padding: 16px 18px;
  background: var(--wash-amber);
  border-left: 3px solid var(--amber);
  font-size: var(--step0);
  line-height: 1.8;
  color: var(--ink);
}

/* 转交路径 */
.page-contact .route-tools {
  margin-top: 22px;
}

.page-contact .route-list {
  margin-top: 18px;
  border-top: 1px solid var(--rule);
}

.page-contact .route-card {
  display: grid;
  gap: 12px;
  padding: 20px 14px;
  border-bottom: 1px solid var(--rule);
  transition: background-color .18s ease;
}

.page-contact .route-card[hidden] {
  display: none;
}

.page-contact .route-card:hover {
  background: var(--wash);
}

.page-contact .route-card__no {
  margin: 0;
  font-size: var(--step2);
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .route-card__title {
  margin: 0 0 8px;
  font-family: var(--sans);
  font-weight: 800;
  font-size: var(--step1);
  line-height: 1.45;
  color: var(--bronze-deep);
}

.page-contact .route-card__desc {
  margin: 0;
  font-size: var(--step0);
  line-height: 1.85;
  color: var(--ink);
  max-width: 62ch;
}

.page-contact .route-card__side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.page-contact .route-card__link {
  font-family: var(--mono);
  font-size: var(--step-2);
  letter-spacing: .03em;
  color: var(--bronze);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
  transition: color .18s ease, border-color .18s ease;
}

.page-contact .route-card__link:hover {
  color: var(--bronze-deep);
  border-bottom-color: var(--amber);
}

.page-contact .route-figure {
  margin: 30px 0 0;
}

/* 不在处理范围 */
.page-contact .exclude-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-contact .exclude-list li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid var(--rule-soft);
  font-size: var(--step0);
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .exclude-list__mark {
  font-family: var(--mono);
  font-size: var(--step0);
  line-height: 1.8;
  color: var(--ember);
}

/* 底部速查条 */
.page-contact .quick-strip {
  display: grid;
  gap: 16px;
  margin: 52px 0 56px;
  padding: 22px 20px;
  border: 1px solid var(--bronze);
  border-left-width: 5px;
  background: var(--paper-2);
  box-shadow: var(--shadow-slab);
}

.page-contact .quick-strip__text {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--slate-deep);
}

.page-contact .quick-strip__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* 焦点可见性 */
.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding-top: 34px;
  }

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

  .page-contact .checklist li {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 20px;
    padding: 22px 0;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding-top: 44px;
  }

  .page-contact .hero-split {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    gap: 38px;
    align-items: start;
    margin-top: 34px;
  }

  .page-contact .board {
    padding: 26px 26px 28px;
  }

  .page-contact .section-block {
    margin-top: 82px;
  }

  .page-contact .reach-grid {
    grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
    gap: 44px;
    align-items: start;
    margin-top: 26px;
  }

  .page-contact .route-card {
    grid-template-columns: 76px minmax(0, 1.4fr) minmax(0, .8fr);
    gap: 30px;
    align-items: start;
    padding: 26px 16px;
  }

  .page-contact .route-figure {
    margin-top: 34px;
  }

  .page-contact .quick-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 24px 30px;
    margin: 84px 0 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .wire__node,
  .page-contact .wire__dot,
  .page-contact .route-card,
  .page-contact .route-card__link {
    transition: none;
  }
}