.page-contact {
  --pc-line: rgba(185, 198, 210, .18);
  --pc-line-strong: rgba(185, 198, 210, .32);
  --pc-glow: rgba(99, 224, 165, .45);
  --pc-pad: clamp(18px, 4.5vw, 52px);
  display: block;
  background: var(--navy-900);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-contact > .breadcrumb,
.page-contact > .pc-hero,
.page-contact > .pc-main,
.page-contact > .pc-checklist-section,
.page-contact > .pc-reply,
.page-contact > .pc-signoff {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: var(--pc-pad);
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
}
.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}
.page-contact .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--slate);
}
.page-contact .breadcrumb__link {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-contact .breadcrumb__link:hover {
  color: var(--green-300);
  border-bottom-color: var(--pc-glow);
}

/* ---------- 通用小节头 ---------- */
.page-contact .pc-eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--green-300);
}
.page-contact .pc-h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: #fff;
}
.page-contact .pc-h2--sm {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1.45;
  letter-spacing: 0;
  margin-bottom: 14px;
}
.page-contact .pc-lead {
  margin: 0;
  font-size: clamp(.95rem, 1.2vw, 1.02rem);
  line-height: 1.85;
  color: var(--silver);
  max-width: 62ch;
}
.page-contact .pc-sechead {
  margin-bottom: clamp(22px, 3vw, 34px);
}

/* ---------- 首屏框景 ---------- */
.page-contact .pc-hero {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  grid-template-columns: 1fr;
  padding-top: clamp(46px, 7vw, 74px);
  padding-bottom: clamp(36px, 5.5vw, 66px);
}
.page-contact .pc-hero::before {
  content: "";
  position: absolute;
  top: clamp(26px, 4.4vw, 44px);
  left: var(--pc-pad);
  right: var(--pc-pad);
  height: 7px;
  pointer-events: none;
  background-image: repeating-linear-gradient(to right, var(--pc-line-strong) 0 1px, transparent 1px 30px);
  opacity: .85;
}
.page-contact .pc-hero__text {
  position: relative;
  padding-left: clamp(0px, 2vw, 26px);
  border-left: 1px solid var(--pc-line-strong);
}
.page-contact .pc-hero__text::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: clamp(40px, 7vw, 68px);
  background: linear-gradient(to bottom, var(--green-300), transparent);
}
.page-contact .pc-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.05rem, 5.2vw, 3.9rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: #fff;
  max-width: 20ch;
}
.page-contact .pc-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(.98rem, 1.35vw, 1.1rem);
  line-height: 1.9;
  color: var(--ink);
}

/* ---------- 图像容器 ---------- */
.page-contact .media {
  position: relative;
  margin: 0;
  border: 1px solid var(--pc-line-strong);
  background: var(--navy-800);
  overflow: hidden;
}
.page-contact .pc-hero__media {
  aspect-ratio: 16 / 9;
}
.page-contact .pc-address__media {
  aspect-ratio: 4 / 3;
}
.page-contact .pc-hero__media .media__img,
.page-contact .pc-address__media .media__img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.68) contrast(1.1) brightness(.86);
  transition: transform var(--t-slow) var(--ease);
}
.page-contact .pc-hero__media:hover .media__img,
.page-contact .pc-address__media:hover .media__img {
  transform: scale(1.03);
}
.page-contact .pc-hero__media .media__grid,
.page-contact .pc-address__media .media__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(99, 224, 165, .09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(99, 224, 165, .09) 1px, transparent 1px);
  background-size: 64px 64px;
}
.page-contact .pc-hero__media .media__caption,
.page-contact .pc-address__media .media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  max-width: 100%;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.5;
  color: var(--silver);
  background: rgba(10, 23, 38, .86);
  border-top: 1px solid var(--pc-line-strong);
  border-right: 1px solid var(--pc-line-strong);
}

/* ---------- 主双栏 ---------- */
.page-contact .pc-main {
  display: grid;
  gap: clamp(24px, 3.5vw, 44px);
  grid-template-columns: 1fr;
  padding-top: clamp(20px, 3.4vw, 40px);
  padding-bottom: clamp(38px, 6vw, 72px);
}
.page-contact .pc-main__col,
.page-contact .pc-main__aside {
  display: grid;
  gap: clamp(18px, 2.4vw, 26px);
  align-content: start;
  min-width: 0;
}

/* ---------- 渠道卡 ---------- */
.page-contact .pc-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 26px 22px 24px;
  border: 1px solid var(--pc-line);
  background: linear-gradient(158deg, rgba(18, 40, 61, .88), rgba(10, 23, 38, .94));
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.page-contact .pc-channel:hover,
.page-contact .pc-channel:focus-within {
  border-color: var(--pc-glow);
  transform: translateY(-2px);
}
.page-contact .pc-channel--phone {
  background: linear-gradient(158deg, rgba(14, 59, 42, .42), rgba(10, 23, 38, .94));
}
.page-contact .pc-channel .card__tab {
  align-self: flex-start;
  padding: 6px 11px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--navy-900);
  background: var(--green-300);
  border: 1px solid var(--green-300);
  border-radius: 0;
  white-space: nowrap;
}
.page-contact .pc-channel--phone .card__tab {
  color: var(--navy-900);
  background: var(--yellow);
  border-color: var(--yellow);
}
.page-contact .pc-channel__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.12rem, 2.1vw, 1.42rem);
  line-height: 1.38;
  color: #fff;
}
.page-contact .pc-channel__desc {
  margin: 0;
  font-size: .94rem;
  line-height: 1.85;
  color: var(--silver);
}
.page-contact .pc-channel__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 14px 0;
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}
.page-contact .pc-channel__k {
  flex: 0 0 auto;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--slate);
}
.page-contact .pc-channel__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(.9rem, 2.6vw, 1.28rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--green-300);
  overflow-wrap: anywhere;
  min-width: 0;
}
.page-contact .pc-channel__v--mail {
  letter-spacing: -0.02em;
}
.page-contact .pc-channel__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-contact .pc-channel__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: auto;
}
.page-contact .pc-channel .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font: inherit;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--navy-900);
  background: var(--green-300);
  border: 1px solid var(--green-300);
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--t) var(--ease), border-color var(--t) var(--ease), color var(--t) var(--ease);
}
.page-contact .pc-channel .copy-btn:hover {
  background: var(--green-600);
  border-color: var(--green-600);
  color: #fff;
}
.page-contact .pc-channel .copy-btn[data-copied="true"] {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--navy-900);
}
.page-contact .pc-channel .copy-btn[data-copied="true"]::after {
  content: "✓";
  font-family: var(--font-mono);
  font-size: .9em;
}

/* ---------- 折叠：回拨预约 ---------- */
.page-contact .pc-details {
  border-top: 1px solid var(--pc-line);
  padding-top: 14px;
}
.page-contact .pc-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-size: .88rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--green-300);
  padding: 4px 0;
}
.page-contact .pc-details summary::-webkit-details-marker {
  display: none;
}
.page-contact .pc-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--slate);
}
.page-contact .pc-details[open] summary::after {
  content: "−";
}
.page-contact .pc-steps {
  list-style: none;
  margin: 16px 0 2px;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .pc-steps li {
  position: relative;
  padding-left: 42px;
  min-height: 26px;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--silver);
}
.page-contact .pc-steps li::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 28px;
  bottom: -14px;
  width: 1px;
  background: linear-gradient(to bottom, rgba(99, 224, 165, .55), rgba(99, 224, 165, .06));
}
.page-contact .pc-steps li:last-child::before {
  display: none;
}
.page-contact .pc-steps__n {
  position: absolute;
  left: 0;
  top: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--green-300);
  background: var(--navy-900);
  border: 1px solid rgba(99, 224, 165, .5);
  border-radius: 0;
}

/* ---------- 通信地址 ---------- */
.page-contact .pc-address {
  padding: 26px 22px;
  border: 1px solid var(--pc-line-strong);
  background: linear-gradient(152deg, rgba(14, 59, 42, .55), rgba(10, 23, 38, .92));
}
.page-contact .pc-address .pc-eyebrow {
  margin-bottom: 12px;
  color: var(--silver);
}
.page-contact .pc-address__note {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 来信清单 ---------- */
.page-contact .pc-checklist-section {
  padding-top: clamp(38px, 6vw, 72px);
  padding-bottom: clamp(38px, 6vw, 72px);
}
.page-contact .pc-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}
.page-contact .pc-checklist__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 19px 20px;
  background: var(--navy-800);
  font-size: .94rem;
  line-height: 1.75;
  color: var(--ink);
}
.page-contact .pc-checklist__mark {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--green-300);
}
.page-contact .pc-checklist__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  background: var(--green-300);
}
.page-contact .pc-checklist__text {
  min-width: 0;
}

/* ---------- 回复节奏 ---------- */
.page-contact .pc-reply {
  padding-top: clamp(34px, 5vw, 62px);
  padding-bottom: clamp(30px, 4.5vw, 54px);
}
.page-contact .pc-reply__grid {
  display: grid;
  gap: 1px;
  grid-template-columns: 1fr;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}
.page-contact .pc-reply__big {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  padding: clamp(24px, 3vw, 34px);
  background: linear-gradient(160deg, rgba(14, 59, 42, .8), rgba(10, 23, 38, .96));
}
.page-contact .pc-reply__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(3rem, 8vw, 4.4rem);
  font-weight: 700;
  line-height: .95;
  letter-spacing: -0.03em;
  color: var(--yellow);
}
.page-contact .pc-reply__unit {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--silver);
}
.page-contact .pc-reply__cap {
  margin: 10px 0 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--silver);
}
.page-contact .pc-reply__item {
  padding: clamp(22px, 3vw, 30px);
  background: var(--navy-800);
}
.page-contact .pc-reply__item h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.04rem;
  line-height: 1.45;
  color: var(--ink);
}
.page-contact .pc-reply__item p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.88;
  color: var(--silver);
}

/* ---------- 收束条 ---------- */
.page-contact .pc-signoff {
  margin-top: clamp(28px, 4vw, 48px);
}
.page-contact .pc-signoff p {
  margin: 0;
  padding: 22px 22px 22px 24px;
  border-left: 2px solid var(--green-600);
  background: rgba(18, 40, 61, .62);
  font-size: .93rem;
  line-height: 1.92;
  color: var(--silver);
}
.page-contact .pc-signoff a {
  color: var(--green-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(99, 224, 165, .35);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-contact .pc-signoff a:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .pc-channel {
    padding: 30px 26px 26px;
  }
  .page-contact .pc-channel .card__tab {
    position: absolute;
    top: -1px;
    right: -1px;
    align-self: auto;
  }
  .page-contact .pc-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .pc-checklist__item {
    padding: 22px 24px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-contact .pc-reply__grid {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 980px) {
  .page-contact .pc-main {
    grid-template-columns: minmax(0, 1.22fr) minmax(300px, .78fr);
    align-items: start;
  }
}

@media (max-width: 719px) {
  .page-contact .pc-hero::before {
    display: none;
  }
  .page-contact .pc-hero__text {
    padding-left: 16px;
  }
  .page-contact .pc-reply__big {
    grid-row: auto;
  }
  .page-contact .pc-address,
  .page-contact .pc-channel {
    padding-inline: 18px;
  }
}
<<<END>>>