.page-contact {
  --pc-gap: clamp(20px, 3vw, 36px);
  --pc-pad: clamp(20px, 2.6vw, 30px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  margin: 22px 0 clamp(28px, 4vw, 44px);
}
.page-contact .breadcrumb ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-2);
}
.page-contact .breadcrumb li {
  display: flex;
  align-items: center;
}
.page-contact .breadcrumb li + li::before {
  content: "/";
  margin: 0 8px 0 4px;
  color: var(--line-soft);
}
.page-contact .breadcrumb a {
  color: var(--ink-2);
  text-decoration: none;
  transition: color .18s var(--ease);
}
.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
}
.page-contact .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 18px;
  padding-bottom: clamp(30px, 4.5vw, 52px);
  border-bottom: 2px solid var(--line);
  margin-bottom: clamp(32px, 5vw, 60px);
}
.page-contact .contact-hero h1 {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(29px, 5.4vw, 56px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.012em;
  color: var(--ink);
  font-stretch: 87%;
}
.page-contact .contact-hero .prose {
  margin: 0;
  max-width: 46ch;
}
.page-contact .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}
.page-contact .hero-chip {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border: 2px solid var(--line);
  background: var(--surface);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-2);
}

/* ---------- 信息交换台 ---------- */
.page-contact .exchange {
  display: grid;
  gap: var(--pc-gap);
  margin-bottom: clamp(48px, 7vw, 92px);
}
.page-contact .col-title {
  margin: 0 0 18px;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--ink);
  padding-left: 12px;
  border-left: 4px solid var(--cyan);
}
.page-contact .aside-col .col-title {
  border-left-color: var(--orange);
}

/* 渠道卡 */
.page-contact .channel-stack {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-contact .channel-card {
  background: var(--surface);
  border: 2px solid var(--line);
  border-left-width: 5px;
  box-shadow: var(--shadow-hard);
  padding: var(--pc-pad);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}
.page-contact .channel-card--mail { border-left-color: var(--cyan); }
.page-contact .channel-card--phone { border-left-color: var(--orange); }
.page-contact .channel-card--addr { border-left-color: var(--lime); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-top-color: var(--line-soft);
  border-right-color: var(--line-soft);
  border-bottom-color: var(--line-soft);
  transform: translate(-3px, -3px);
}
.page-contact .channel-label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-2);
}
.page-contact .channel-value {
  margin: 0 0 12px;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}
.page-contact .channel-value--mono {
  font-family: var(--mono);
  font-size: clamp(18px, 3.4vw, 30px);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: .005em;
  word-break: break-all;
}
.page-contact .channel-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

/* 右侧准备清单 */
.page-contact .aside-col {
  display: grid;
  gap: var(--pc-gap);
  align-content: start;
}
.page-contact .aside-col .media-frame {
  margin: 0;
}
.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-top: 2px solid var(--line);
}
.page-contact .prep-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding: 16px 14px;
  border-bottom: 2px solid var(--line);
  background: var(--surface);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .prep-item:hover {
  background: #12222F;
  border-bottom-color: var(--cyan);
}
.page-contact .prep-num {
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--orange);
  padding-top: 3px;
}
.page-contact .prep-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
}
.page-contact .prep-body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-2);
}

/* ---------- 回复时效 ---------- */
.page-contact .timing-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-bottom: clamp(28px, 4vw, 44px);
}
.page-contact .timing-clock {
  background: var(--surface);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-hard);
  padding: clamp(22px, 3vw, 34px);
}
.page-contact .timing-hours {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 8px;
  font-size: clamp(38px, 8vw, 76px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-contact .timing-dash {
  color: var(--cyan);
  padding: 0 2px;
}
.page-contact .timing-sub {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--lime);
}
.page-contact .timing-copy {
  margin: 0;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-2);
}
.page-contact .timing-side {
  display: grid;
  gap: 14px;
  align-content: start;
}
.page-contact .tip-block {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  padding: 16px 18px;
  background: var(--surface);
  border: 2px solid var(--line);
  border-left: 4px solid var(--orange);
}
.page-contact .tip-block:nth-child(2) { border-left-color: var(--cyan); }
.page-contact .tip-block:nth-child(3) { border-left-color: var(--lime); }
.page-contact .tip-index {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-2);
  grid-row: span 2;
  padding-top: 2px;
}
.page-contact .tip-title {
  margin: 0;
  font-size: 15.5px;
  font-weight: 800;
  color: var(--ink);
}
.page-contact .tip-body {
  margin: 4px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-2);
  grid-column: 2;
}

/* ---------- 地区与备案 ---------- */
.page-contact .region-grid {
  display: grid;
  gap: var(--pc-gap);
}
.page-contact .region-lead {
  margin: 0 0 14px;
  font-size: clamp(17px, 2.4vw, 21px);
  line-height: 1.5;
  font-weight: 700;
  color: var(--ink);
}
.page-contact .region-copy .prose {
  margin: 0 0 24px;
}
.page-contact .region-kv {
  margin: 0;
  border-top: 2px solid var(--line);
}
.page-contact .kv-row {
  display: grid;
  gap: 4px;
  padding: 14px 2px;
  border-bottom: 2px solid var(--line);
}
.page-contact .kv-row .kv {
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--ink-2);
  text-transform: uppercase;
}
.page-contact .kv-row .vl {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  font-weight: 600;
  color: var(--ink);
  word-break: break-word;
}
.page-contact .kv-row .vl.mono {
  font-family: var(--mono);
  letter-spacing: .02em;
  color: var(--cyan);
}
.page-contact .region-media {
  margin: 0;
}

/* ---------- 合作与反馈 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: var(--pc-gap);
  margin-bottom: clamp(28px, 4vw, 44px);
}
.page-contact .coop-card {
  background: var(--surface);
  border: 2px solid var(--line);
  box-shadow: var(--shadow-soft);
  padding: var(--pc-pad);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}
.page-contact .coop-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-hard);
  border-color: var(--line-soft);
}
.page-contact .coop-tag {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
}
.page-contact .coop-title {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
  color: var(--ink);
}
.page-contact .coop-body {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-2);
}
.page-contact .coop-meta {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-soft);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
}
.page-contact .coop-foot {
  border-top: 2px solid var(--line);
  padding-top: 22px;
}
.page-contact .coop-foot .prose {
  margin: 0;
}
.page-contact .coop-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.page-contact .coop-foot a:hover,
.page-contact .coop-foot a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---------- 折叠组 ---------- */
.page-contact .accordion {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 3.5vw, 40px);
}
.page-contact .acc-item {
  border: 2px solid var(--line);
  background: var(--surface);
}
.page-contact .acc-trigger {
  width: 100%;
  display: grid;
  grid-template-columns: 40px 1fr 28px;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--ink);
  font-family: inherit;
  font-size: 15.5px;
  font-weight: 700;
  transition: background .18s var(--ease), color .18s var(--ease);
}
.page-contact .acc-trigger:hover,
.page-contact .acc-trigger:focus-visible {
  background: #12222F;
  color: var(--cyan);
  outline: none;
}
.page-contact .acc-trigger[aria-expanded="true"] {
  color: var(--cyan);
  border-bottom: 2px solid var(--line);
}
.page-contact .acc-index {
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
}
.page-contact .acc-sign {
  font-family: var(--mono);
  font-size: 20px;
  line-height: 1;
  text-align: center;
  color: var(--cyan);
  transition: transform .18s var(--ease);
}
.page-contact .acc-trigger[aria-expanded="true"] .acc-sign {
  transform: rotate(45deg);
}
.page-contact .acc-panel {
  overflow: hidden;
}
.page-contact .acc-panel[hidden] {
  display: none;
}
.page-contact .acc-panel-inner {
  padding: 18px 20px 22px 70px;
  display: grid;
  gap: 10px;
}
.page-contact .acc-panel-inner p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-2);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 820px) {
  .page-contact .timing-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .region-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-contact .region-media {
    margin-top: 6px;
  }
}

@media (min-width: 980px) {
  .page-contact .exchange {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
  }
  .page-contact .contact-hero h1 {
    max-width: 22ch;
  }
}

@media (max-width: 560px) {
  .page-contact .prep-item {
    grid-template-columns: 32px 1fr;
    gap: 10px;
  }
  .page-contact .acc-trigger {
    grid-template-columns: 32px 1fr 22px;
    gap: 8px;
    padding: 14px;
    font-size: 14.5px;
  }
  .page-contact .acc-panel-inner {
    padding: 14px 16px 18px 46px;
  }
  .page-contact .tip-block {
    grid-template-columns: 26px 1fr;
    gap: 8px;
    padding: 14px;
  }
  .page-contact .channel-card {
    box-shadow: var(--shadow-soft);
  }
  .page-contact .channel-value--mono {
    font-size: 17px;
  }
}
<<<END>>>