.page-contact {
  --pc-on-dark: rgba(250, 247, 240, 0.8);
  --pc-line-dark: rgba(250, 247, 240, 0.18);
  --pc-sand-veil: rgba(240, 227, 200, 0.6);
  background: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-contact > .breadcrumb {
  padding-top: 26px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* ---------- 首屏：信函折线结构 ---------- */
.page-contact .contact-hero {
  padding: 24px 0 64px;
}

.page-contact .hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-contact .hero-title {
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 30px;
  line-height: 1.36;
  letter-spacing: 0.02em;
  color: var(--ink-navy);
}

.page-contact .hero-lead {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: var(--fs-body);
  line-height: 1.85;
  color: var(--text-ink);
}

.page-contact .hero-facts {
  margin: 30px 0 0;
  padding: 20px 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .hero-facts > div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-contact .hero-facts dt {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}

.page-contact .hero-facts dd {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 19px;
  letter-spacing: 0.05em;
  color: var(--ink-navy);
  overflow-wrap: anywhere;
}

.page-contact .hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 28px 0 0;
}

.page-contact .hero-figure {
  margin: 0;
}

.page-contact .hero-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border-radius: var(--radius-soft);
}

.page-contact .hero-figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

/* ---------- 区块头部通用 ---------- */
.page-contact .block-head {
  margin-bottom: 40px;
}

.page-contact .block-head__title {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.42;
  letter-spacing: 0.02em;
  color: var(--ink-navy);
}

.page-contact .block-head__lead {
  margin: 16px 0 0;
  max-width: 38em;
  line-height: 1.85;
  color: var(--text-ink);
}

/* ---------- 通道列表 ---------- */
.page-contact .lane-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .lane {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color 0.28s var(--ease), padding 0.28s var(--ease),
    border-radius 0.28s var(--ease);
}

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

.page-contact .lane:hover,
.page-contact .lane:focus-within {
  background-color: var(--pc-sand-veil);
  padding-left: 18px;
  padding-right: 18px;
  border-radius: var(--radius-soft);
}

.page-contact .lane__num {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.06em;
  color: var(--sand-gold);
  line-height: 1;
}

.page-contact .lane__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-contact .lane__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--ink-navy);
}

.page-contact .lane__desc {
  margin: 0;
  max-width: 44em;
  line-height: 1.85;
  color: var(--text-ink);
}

.page-contact .lane__more {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s var(--ease), opacity 0.3s var(--ease),
    margin-top 0.3s var(--ease);
}

.page-contact .lane__more p {
  margin: 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-contact .lane:hover .lane__more,
.page-contact .lane:focus-within .lane__more {
  max-height: 320px;
  margin-top: 12px;
  opacity: 1;
}

.page-contact .lane__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--navy-link);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--sand-gold);
}

/* ---------- 联系方式 ---------- */
.page-contact .reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.page-contact .contact-figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-contact .contact-figures__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}

.page-contact .contact-figures__value {
  display: block;
  margin-top: 7px;
  font-family: var(--font-serif);
  font-size: 17px;
  letter-spacing: 0.06em;
  line-height: 1.5;
  color: var(--ink-navy);
  overflow-wrap: anywhere;
}

.page-contact .contact-figures__note {
  display: block;
  margin-top: 7px;
  max-width: 36em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-contact .reach-mark {
  margin: 0;
  padding: 28px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  color: var(--sand-gold);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .coord-mark {
  width: 132px;
  height: 132px;
}

.page-contact .reach-mark__cap {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  text-align: center;
}

/* ---------- 来信内容清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist__index {
  font-family: var(--font-serif);
  font-size: 20px;
  letter-spacing: 0.05em;
  color: var(--ink-navy);
  line-height: 1.3;
}

.page-contact .checklist__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink-navy);
}

.page-contact .checklist__item p {
  margin: 8px 0 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-ink);
}

.page-contact .checklist__footnote {
  margin: 32px 0 0;
  max-width: 44em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-contact .checklist__footnote a {
  color: var(--navy-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--sand-gold);
}

/* ---------- 处理流程（深色带） ---------- */
.page-contact .flow-band {
  background: var(--navy-deep);
  color: var(--paper);
  padding: 68px 0;
}

.page-contact .flow-band .annotation {
  color: var(--sand-gold);
}

.page-contact .flow-head {
  max-width: 42em;
}

.page-contact .flow-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 24px;
  line-height: 1.42;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .flow-head__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--pc-on-dark);
}

.page-contact .flow-list {
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
}

.page-contact .step {
  border-top: 1px solid var(--pc-line-dark);
}

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

.page-contact .step__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .step__num {
  font-family: var(--font-serif);
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--sand-gold);
}

.page-contact .step__name {
  font-family: var(--font-serif);
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-contact .step__mark {
  font-size: 18px;
  line-height: 1;
  color: var(--sand-gold);
}

.page-contact .step__mark::before {
  content: "＋";
}

.page-contact .step[open] .step__mark::before {
  content: "－";
}

.page-contact .step__body {
  padding: 0 0 24px;
  max-width: 46em;
}

.page-contact .step__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--pc-on-dark);
}

.page-contact .flow-figure {
  margin: 44px 0 0;
}

.page-contact .flow-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-soft);
}

.page-contact .flow-figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.05em;
  color: rgba(250, 247, 240, 0.62);
}

/* ---------- 合作与建议 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .coop {
  padding: 28px 0 0;
  border-top: 2px solid var(--sand-gold);
}

.page-contact .coop__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.45;
  color: var(--ink-navy);
}

.page-contact .coop__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-muted);
}

.page-contact .coop__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .coop__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-ink);
}

.page-contact .coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--ink-navy);
}

.page-contact .coop__footnote {
  margin: 36px 0 0;
  max-width: 46em;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-muted);
}

/* ---------- 悬停能力不足时内容常驻可见 ---------- */
@media (hover: none) {
  .page-contact .lane__more {
    max-height: none;
    opacity: 1;
    margin-top: 12px;
  }
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-contact .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .lane {
    grid-template-columns: 64px 1fr;
    gap: 20px;
  }

  .page-contact .contact-figures {
    gap: 30px;
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 44px;
  }
}

/* ---------- 桌面端：非对称编辑部网格 ---------- */
@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: 36px 0 92px;
  }

  .page-contact .hero-title {
    font-size: 46px;
  }

  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 68px;
    align-items: start;
  }

  .page-contact .hero-grid::before {
    content: "";
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: calc(51.5% - 1px);
    width: 1px;
    background-image: repeating-linear-gradient(
      to bottom,
      var(--sand-light) 0 12px,
      transparent 12px 22px
    );
    pointer-events: none;
  }

  .page-contact .block-head__title {
    font-size: 30px;
  }

  .page-contact .block-head {
    margin-bottom: 52px;
  }

  .page-contact .lane {
    grid-template-columns: 84px 1fr;
    padding: 32px 0;
  }

  .page-contact .lane__num {
    font-size: 26px;
  }

  .page-contact .lane__title {
    font-size: 22px;
  }

  .page-contact .reach-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: 64px;
  }

  .page-contact .contact-figures__value {
    font-size: 21px;
  }

  .page-contact .reach-mark {
    border-top: none;
    border-bottom: none;
    border-left: 1px dashed var(--line);
    padding: 8px 0 8px 32px;
    align-items: flex-start;
  }

  .page-contact .reach-mark__cap {
    text-align: left;
  }

  .page-contact .checklist__item {
    grid-template-columns: 64px 1fr;
    padding: 26px 0;
  }

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

  .page-contact .flow-band {
    padding: 96px 0;
  }

  .page-contact .flow-head h2 {
    font-size: 30px;
  }

  .page-contact .step__num {
    font-size: 34px;
  }

  .page-contact .step__name {
    font-size: 22px;
  }

  .page-contact .step__body {
    padding-left: 60px;
  }

  .page-contact .flow-figure {
    margin-top: 56px;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .lane,
  .page-contact .lane__more {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</final_answer>