.page-contact {
  background-color: var(--paper);
  color: var(--ink-soft);
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: calc(var(--header-h) + 20px) 0 0;
}

.page-contact .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--wood);
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-contact .breadcrumb a {
  color: var(--wood);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

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

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 36px 0 calc(var(--module) * 0.8);
  border-bottom: var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.4;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 82%);
}

.page-contact .contact-hero__frame {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  max-width: 20ch;
  color: var(--ink);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-contact .contact-hero__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin: 0;
  border-top: var(--line);
  border-left: var(--line);
}

.page-contact .contact-hero__meta > div {
  padding: 12px 14px 14px;
  border-right: var(--line);
  border-bottom: var(--line);
  background-color: rgba(237, 226, 200, 0.55);
}

.page-contact .contact-hero__meta dt {
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--seal);
}

.page-contact .contact-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* ---------- 横向渠道带 ---------- */
.page-contact .channel-band {
  position: relative;
  padding: calc(var(--module) * 0.8) 0;
  background-color: var(--paper-deep);
  border-bottom: var(--line);
}

.page-contact .channel-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0 23px,
    rgba(201, 190, 166, 0.5) 23px 24px
  );
  opacity: 0.55;
  pointer-events: none;
}

.page-contact .channel-band .shell {
  position: relative;
  z-index: 1;
}

.page-contact .band-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 22px;
  margin-bottom: 28px;
}

.page-contact .band-head .section-title {
  margin: 0;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--wood);
  border-left: 1px solid var(--wood);
}

.page-contact .channel-cell {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 24px;
  border-right: 1px solid var(--wood);
  border-bottom: 1px solid var(--wood);
  background-color: var(--paper);
  transition: background-color 0.18s ease, box-shadow 0.18s ease;
}

.page-contact .channel-cell:hover,
.page-contact .channel-cell:focus-within {
  background-color: #fbf7ec;
  box-shadow: inset 3px 0 0 var(--dice);
}

.page-contact .channel-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--seal);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .channel-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .channel-fit {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: var(--hair);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--wood);
}

/* ---------- 邮箱与纠错纵段 ---------- */
.page-contact .fix-section {
  padding: calc(var(--module) * 0.95) 0;
  border-bottom: var(--line);
}

.page-contact .fix-section__frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.page-contact .lane > * + * {
  margin-top: 16px;
}

.page-contact .lane .section-title {
  margin: 0;
}

.page-contact .lane-lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 42ch;
}

.page-contact .lane-foot {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--gold);
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink);
}

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

.page-contact .note-list li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 0;
  border-bottom: var(--hair);
  font-size: 14px;
  line-height: 1.8;
}

.page-contact .note-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--wood);
  padding-top: 3px;
}

.page-contact .fix-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--wood);
}

.page-contact .fix-steps > li {
  margin: 0;
}

.page-contact .fix-step {
  border-bottom: var(--hair);
}

.page-contact .fix-step > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 15px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  color: var(--ink);
  transition: background-color 0.18s ease;
}

.page-contact .fix-step > summary::-webkit-details-marker {
  display: none;
}

.page-contact .fix-step > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--dice);
}

.page-contact .fix-step[open] > summary {
  background-color: rgba(237, 226, 200, 0.7);
}

.page-contact .fix-step[open] > summary::after {
  content: "\2013";
}

.page-contact .fix-step__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--seal);
}

.page-contact .fix-step__body {
  margin: 0;
  padding: 4px 18px 18px 4px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 电话与通信地址 ---------- */
.page-contact .reach-section {
  padding: calc(var(--module) * 0.95) 0;
  background-color: var(--paper-deep);
  border-bottom: var(--line);
}

.page-contact .reach-card {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--wood);
  background-color: var(--paper);
  overflow: hidden;
}

.page-contact .reach-card__media {
  margin: 0;
  border-bottom: 1px solid var(--wood);
  aspect-ratio: 1000 / 640;
  overflow: hidden;
}

.page-contact .reach-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .reach-card__media .figure-cap {
  position: absolute;
  left: 0;
  bottom: 0;
  margin: 0;
  padding: 6px 12px;
  background-color: rgba(20, 16, 13, 0.78);
  color: var(--paper);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-contact .reach-card__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px 22px 30px;
  background-image: repeating-linear-gradient(
    0deg,
    transparent 0 19px,
    rgba(201, 190, 166, 0.42) 19px 20px
  );
}

.page-contact .reach-card__body .section-title {
  margin: 0;
}

.page-contact .reach-card__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-contact .reach-list {
  margin: 6px 0 0;
  border-top: var(--hair);
}

.page-contact .reach-list > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 0;
  border-bottom: var(--hair);
}

.page-contact .reach-list dt {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--wood);
}

.page-contact .reach-list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .reach-list dd.num {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.page-contact .reach-card__note {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 合作与建议 ---------- */
.page-contact .coop-section {
  padding: calc(var(--module) * 0.95) 0;
  border-bottom: var(--line);
}

.page-contact .coop-section__frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-contact .coop-section__text > * + * {
  margin-top: 16px;
}

.page-contact .coop-section__text .section-title {
  margin: 0;
}

.page-contact .coop-section__text > p {
  font-size: 14px;
  line-height: 1.9;
  max-width: 44ch;
}

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

.page-contact .coop-list li {
  position: relative;
  padding: 12px 0 12px 20px;
  border-bottom: var(--hair);
  font-size: 14px;
  line-height: 1.8;
}

.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 10px;
  height: 2px;
  background-color: var(--teal);
}

.page-contact .coop-list strong {
  color: var(--ink);
  font-weight: 500;
}

.page-contact .coop-note {
  font-size: 13px;
  line-height: 1.85;
  color: var(--wood);
}

.page-contact .coop-note a {
  color: var(--seal);
  text-decoration: none;
  border-bottom: 1px solid var(--seal);
}

.page-contact .coop-note a:hover,
.page-contact .coop-note a:focus-visible {
  color: var(--dice);
  border-bottom-color: var(--dice);
}

.page-contact .coop-section__media {
  margin: 0;
  border: 1px solid var(--wood);
  overflow: hidden;
  aspect-ratio: 860 / 560;
}

.page-contact .coop-section__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .coop-section__media .figure-cap {
  margin: 0;
  padding: 8px 12px;
  border-top: var(--hair);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--wood);
  background-color: var(--paper);
}

/* ---------- 收束横带 ---------- */
.page-contact .closing-band {
  padding: calc(var(--module) * 0.65) 0;
  background-color: var(--night);
  color: var(--paper);
}

.page-contact .closing-band__frame {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-contact .closing-band .index-label {
  color: var(--gold);
}

.page-contact .closing-band__line {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.05em;
  font-weight: 400;
  color: var(--paper-deep);
}

.page-contact .closing-band__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.85;
  color: rgba(246, 240, 226, 0.74);
}

.page-contact .closing-band__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-contact .closing-band__btn {
  color: var(--paper);
  border: 1px solid var(--wood);
  background-color: transparent;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.page-contact .closing-band__btn:hover,
.page-contact .closing-band__btn:focus-visible {
  background-color: var(--dice);
  border-color: var(--dice);
  color: var(--paper);
}

.page-contact .closing-band__mini {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--paper-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--wood);
}

.page-contact .closing-band__mini:hover,
.page-contact .closing-band__mini:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 焦点可达 ---------- */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--dice);
  outline-offset: 3px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-contact .contact-hero {
    padding-top: 48px;
  }

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

  .page-contact .reach-list > div {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }

  .page-contact .reach-list dt {
    padding-top: 3px;
  }

  .page-contact .coop-section__media .figure-cap {
    padding: 10px 14px;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1000px) {
  .page-contact .contact-hero {
    padding: 60px 0 calc(var(--module) * 0.9);
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 56px;
    align-items: end;
    max-width: 1120px;
  }

  .page-contact .contact-hero__lead {
    font-size: 16px;
  }

  .page-contact .fix-section__frame {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 72px;
  }

  .page-contact .reach-card {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-contact .reach-card__media {
    border-bottom: 0;
    border-right: 1px solid var(--wood);
    height: 100%;
  }

  .page-contact .reach-card__body {
    padding: 32px 30px 36px;
  }

  .page-contact .coop-section__frame {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 64px;
    align-items: start;
  }

  .page-contact .closing-band__frame {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr) auto;
    gap: 48px;
    align-items: center;
  }
}

/* ---------- 超大屏 ---------- */
@media (min-width: 1440px) {
  .page-contact .contact-hero__title {
    max-width: 24ch;
  }

  .page-contact .channel-cell {
    padding: 26px 24px 28px;
  }
}