.page-contact {
  --pc-gap: clamp(52px, 8vw, 96px);
  --pc-line: 3px solid var(--rock);
  --pc-soft: rgba(244, 239, 228, .74);
  --pc-mute: rgba(244, 239, 228, .55);
  padding-bottom: clamp(56px, 9vw, 120px);
}

.page-contact .breadcrumb {
  margin: 0 0 clamp(20px, 4vw, 32px);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 48px) clamp(22px, 4.4vw, 48px) clamp(30px, 5vw, 50px);
  border: var(--pc-line);
  background: linear-gradient(150deg, rgba(30, 24, 64, .96), rgba(21, 15, 46, .99));
  box-shadow: var(--shadow);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--flag-h);
}

.page-contact .contact-hero::after {
  content: "616 / SUPPORT DESK";
  position: absolute;
  right: clamp(14px, 3vw, 30px);
  bottom: clamp(12px, 2.6vw, 20px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: rgba(244, 239, 228, .28);
}

.page-contact .contact-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
  margin: 10px 0 0;
}

.page-contact .contact-hero h1 {
  max-width: 18ch;
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.8vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bone);
}

.page-contact .contact-hero__lede {
  max-width: 44ch;
  margin: 0;
  font-size: 17px;
  line-height: 1.9;
  color: var(--pc-soft);
}

/* ---------- 章节通用 ---------- */

.page-contact .section {
  margin-top: var(--pc-gap);
}

.page-contact .section__head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-contact .section__head .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--clay);
  margin: 0;
}

.page-contact .section__head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.2vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-contact .section__head h2::after {
  content: "";
  display: block;
  width: 62px;
  height: 4px;
  margin-top: 14px;
  background: var(--flag-h);
}

.page-contact .section__head p {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--pc-soft);
}

/* ---------- 联系方式 ---------- */

.page-contact .channels-layout {
  display: grid;
  gap: clamp(20px, 3.4vw, 30px);
}

.page-contact .channel-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 20px 20px;
  border: var(--pc-line);
  background: var(--ink-1);
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--card-accent, var(--gold));
}

.page-contact .channel-card--mail { --card-accent: var(--flag-blue); }
.page-contact .channel-card--phone { --card-accent: var(--gold); }
.page-contact .channel-card--addr { --card-accent: var(--clay); }
.page-contact .channel-card--time { --card-accent: var(--moss); }

.page-contact .channel-card__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--card-accent, var(--gold));
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 22px);
  line-height: 1.5;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--pc-soft);
}

.page-contact .channel-card__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--rock);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--pc-mute);
}

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

/* ---------- 准备清单 ---------- */

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  border: var(--pc-line);
  background: var(--ink-2);
  box-shadow: var(--shadow-sm);
}

.page-contact .prep-item__no {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-0);
  background: var(--gold);
}

.page-contact .prep-item__body {
  padding: 16px 18px 18px;
}

.page-contact .prep-item__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--bone);
}

.page-contact .prep-item__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--pc-soft);
}

/* ---------- 咨询分类手风琴 ---------- */

.page-contact .ask-list {
  display: grid;
  gap: 14px;
}

.page-contact .ask {
  border: var(--pc-line);
  background: var(--ink-1);
  box-shadow: var(--shadow-sm);
}

.page-contact .ask summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--bone);
}

.page-contact .ask summary::-webkit-details-marker { display: none; }
.page-contact .ask summary::marker { content: ""; }

.page-contact .ask summary:hover {
  background: rgba(233, 178, 60, .07);
}

.page-contact .ask__mark {
  position: relative;
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--gold);
}

.page-contact .ask__mark::before,
.page-contact .ask__mark::after {
  content: "";
  position: absolute;
  background: var(--gold);
}

.page-contact .ask__mark::before {
  top: 50%;
  left: 3px;
  right: 3px;
  height: 2px;
  margin-top: -1px;
}

.page-contact .ask__mark::after {
  left: 50%;
  top: 3px;
  bottom: 3px;
  width: 2px;
  margin-left: -1px;
  transition: opacity .18s ease;
}

.page-contact .ask[open] .ask__mark::after {
  opacity: 0;
}

.page-contact .ask__body {
  padding: 4px 20px 20px;
  border-top: 1px solid rgba(58, 58, 70, .9);
  margin-top: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--pc-soft);
}

.page-contact .ask__body p {
  margin: 14px 0 0;
}

.page-contact .ask__body a {
  color: var(--flag-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .ask__body a:hover {
  color: var(--gold);
}

/* ---------- 处理流程 ---------- */

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-contact .flow__step {
  position: relative;
  padding: 0 0 clamp(22px, 3.4vw, 32px) 30px;
  border-left: 3px solid rgba(58, 58, 70, .95);
}

.page-contact .flow__step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: -9px;
  top: 4px;
  width: 15px;
  height: 15px;
  box-sizing: border-box;
  border: 3px solid var(--gold);
  background: var(--ink-0);
}

.page-contact .flow__stamp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--clay);
}

.page-contact .flow__title {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  color: var(--bone);
}

.page-contact .flow__note {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--pc-soft);
}

/* ---------- 备案与主体 ---------- */

.page-contact .dossier {
  display: grid;
  gap: clamp(20px, 3.4vw, 30px);
  border: var(--pc-line);
  background: var(--ink-2);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3.4vw, 32px);
}

.page-contact .dossier__facts {
  margin: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-contact .dossier__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed rgba(58, 58, 70, .9);
}

.page-contact .dossier__row:first-child { padding-top: 0; }
.page-contact .dossier__row:last-child { border-bottom: 0; padding-bottom: 0; }

.page-contact .dossier__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--moss);
}

.page-contact .dossier__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--bone);
  overflow-wrap: anywhere;
}

.page-contact .dossier__row dd.mono {
  font-family: var(--font-mono);
  color: var(--gold);
}

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

/* ---------- 相关页面 ---------- */

.page-contact .contact-links {
  margin-top: var(--pc-gap);
  padding: clamp(20px, 3.4vw, 30px);
  border: var(--pc-line);
  background: var(--ink-1);
  box-shadow: var(--shadow-sm);
}

.page-contact .contact-links__lead {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--pc-mute);
}

.page-contact .contact-links__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-links__list li {
  position: relative;
  padding-left: 20px;
}

.page-contact .contact-links__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 3px;
  background: var(--gold);
}

.page-contact .contact-links__list a {
  color: var(--bone);
  font-size: 15.5px;
  line-height: 1.8;
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 178, 60, .4);
}

.page-contact .contact-links__list a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .dossier__row {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

  .page-contact .contact-links__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 28px;
  }
}

@media (min-width: 1024px) {
  .page-contact .channels-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-contact .dossier {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }

  .page-contact .flow {
    padding-left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .ask__mark::after {
    transition: none;
  }
}
<<<END>>>