.page-contact {
  --pc-gap: clamp(16px, 2.4vw, 28px);
  --pc-hard: 6px 6px 0 var(--ink);
}

/* ---------- 面包屑 ---------- */
.page-contact .pc-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .pc-crumb__link {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .pc-crumb__link:hover,
.page-contact .pc-crumb__link:focus-visible {
  color: var(--chalk);
  border-bottom-color: var(--signal);
}

.page-contact .pc-crumb__sep {
  color: var(--gold);
}

.page-contact .pc-crumb__now {
  color: var(--chalk);
  font-weight: 700;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  background-color: var(--night);
  background-image:
    repeating-linear-gradient(90deg, rgba(142, 163, 184, 0.11) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(142, 163, 184, 0.08) 0 1px, transparent 1px 72px);
  color: var(--chalk);
  padding: clamp(26px, 5vw, 52px) 0 clamp(30px, 5vw, 62px);
  border-bottom: 3px solid var(--ink);
  overflow: hidden;
}

.page-contact .pc-hero__title {
  margin: 0.12em 0 0.3em;
  font-size: clamp(38px, 6.4vw, 84px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--chalk);
  max-width: 15ch;
}

.page-contact .pc-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .pc-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 2.4vw, 28px);
}

/* ---------- 通栏图 ---------- */
.page-contact .pc-banner {
  margin: 0;
  background: var(--ink);
  border-bottom: 3px solid var(--ink);
  line-height: 0;
}

.page-contact .pc-banner img {
  display: block;
  width: 100%;
  height: clamp(180px, 32vw, 420px);
  object-fit: cover;
  max-width: 100%;
}

/* ---------- 页内导航 ---------- */
.page-contact .pc-jump {
  background: var(--chalk);
  border-bottom: 2px solid var(--ink);
}

.page-contact .pc-jump__inner {
  display: flex;
  gap: clamp(14px, 2.6vw, 32px);
  padding-top: 14px;
  padding-bottom: 14px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-contact .pc-jump__link {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--night);
  text-decoration: none;
  white-space: nowrap;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .pc-jump__link:hover,
.page-contact .pc-jump__link:focus-visible {
  color: var(--brick);
  border-bottom-color: var(--signal);
}

/* ---------- 主体分栏 ---------- */
.page-contact .pc-main {
  background: var(--chalk);
  color: var(--night);
  padding: clamp(30px, 5vw, 68px) 0;
}

.page-contact .pc-types__head h2,
.page-contact .pc-flow__head h2,
.page-contact .pc-visit__head h2,
.page-contact .pc-tail__inner h2 {
  margin: 0.1em 0 0.4em;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.015em;
}

.page-contact .pc-types__head p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--night);
}

.page-contact .pc-types__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(20px, 2.6vw, 32px);
  padding-bottom: clamp(6px, 1vw, 14px);
}

/* ---------- 斜切合作卡 ---------- */
.page-contact .pc-coop {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--white);
  border: 2px solid var(--ink);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
  filter: drop-shadow(6px 6px 0 var(--ink));
  transition: transform 0.18s var(--ease), filter 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .pc-coop:hover,
.page-contact .pc-coop:focus-within {
  border-color: var(--gold);
  transform: translateY(-2px);
}

.page-contact .pc-coop__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .pc-coop__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--signal);
}

.page-contact .pc-coop h3 {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--night);
}

.page-contact .pc-coop__who {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--night);
}

.page-contact .pc-coop__more {
  margin-top: auto;
  padding-top: 12px;
  border-top: 2px dashed rgba(10, 26, 42, 0.22);
}

.page-contact .pc-coop__more summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--brick);
}

.page-contact .pc-coop__more summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-coop__more summary::before {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--signal);
}

.page-contact .pc-coop__more[open] summary::before {
  content: "－";
}

.page-contact .pc-coop__more ul {
  margin: 10px 0 0;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--night);
}

.page-contact .pc-coop__more li {
  margin-bottom: 4px;
}

/* ---------- 右侧联系渠道竖栏 ---------- */
.page-contact .pc-channel {
  margin-top: clamp(24px, 3.4vw, 40px);
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--panel);
  color: var(--chalk);
  border: 2px solid var(--ink);
  box-shadow: var(--pc-hard);
}

.page-contact .pc-channel__eyebrow {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .pc-channel__title {
  margin: 0 0 10px;
  font-size: clamp(22px, 2.8vw, 28px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--chalk);
}

.page-contact .pc-channel__lead {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .pc-channel__block {
  padding: 16px 0;
  border-top: 1px solid rgba(232, 179, 58, 0.45);
}

.page-contact .pc-channel__key {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .pc-channel__value {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--chalk);
  overflow-wrap: anywhere;
}

.page-contact .pc-channel__value--mail {
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.5vw, 16px);
  letter-spacing: -0.01em;
  color: var(--ember);
}

.page-contact .pc-channel__value--tel {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(21px, 2.6vw, 27px);
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .pc-channel__note {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

/* ---------- 对接流程 ---------- */
.page-contact .pc-flow {
  background-color: var(--night);
  background-image:
    repeating-linear-gradient(90deg, rgba(142, 163, 184, 0.07) 0 1px, transparent 1px 84px);
  color: var(--chalk);
  padding: clamp(34px, 5vw, 76px) 0;
  border-top: 3px solid var(--ink);
  border-bottom: 3px solid var(--ink);
}

.page-contact .pc-flow__head h2 {
  color: var(--chalk);
}

.page-contact .pc-flow__head p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .pc-flow__media {
  margin: clamp(22px, 3vw, 36px) 0 0;
  border: 3px solid var(--slate);
  box-shadow: 8px 8px 0 rgba(232, 179, 58, 0.24);
  background: var(--panel);
  line-height: 0;
}

.page-contact .pc-flow__media img {
  display: block;
  width: 100%;
  height: clamp(170px, 30vw, 340px);
  object-fit: cover;
  max-width: 100%;
}

.page-contact .pc-steps {
  list-style: none;
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.6vw, 26px);
}

.page-contact .pc-step {
  position: relative;
  padding-left: 26px;
}

.page-contact .pc-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--signal);
}

.page-contact .pc-step::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  bottom: calc(-1 * clamp(20px, 2.6vw, 26px));
  width: 2px;
  background: rgba(232, 179, 58, 0.45);
}

.page-contact .pc-step:last-child::after {
  display: none;
}

.page-contact .pc-step__no {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-contact .pc-step h3 {
  margin: 8px 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-contact .pc-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

/* ---------- 来访与邮寄 ---------- */
.page-contact .pc-visit {
  background: var(--chalk);
  color: var(--night);
  padding: clamp(32px, 5vw, 68px) 0;
}

.page-contact .pc-visit__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2vw, 24px);
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-contact .pc-visit__card {
  background: var(--white);
  border: 2px solid var(--ink);
  box-shadow: var(--pc-hard);
  padding: clamp(20px, 2.4vw, 28px);
}

.page-contact .pc-visit__card h3 {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--night);
}

.page-contact .pc-visit__card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--night);
}

.page-contact .pc-visit__card p:last-child {
  margin-bottom: 0;
}

.page-contact .pc-visit__addr {
  padding-top: 10px;
  border-top: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--night);
  overflow-wrap: anywhere;
}

/* ---------- 收尾 ---------- */
.page-contact .pc-tail {
  background: var(--night);
  color: var(--chalk);
  padding: clamp(32px, 4.6vw, 62px) 0;
  border-top: 3px solid var(--ink);
}

.page-contact .pc-tail__inner h2 {
  color: var(--chalk);
}

.page-contact .pc-tail__inner p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .pc-tail__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-contact .pc-tail__link {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .pc-tail__link:hover,
.page-contact .pc-tail__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .pc-types__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-coop:nth-child(even) {
    margin-top: clamp(12px, 2vw, 26px);
  }
}

@media (min-width: 820px) {
  .page-contact .pc-visit__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-contact .pc-split {
    display: grid;
    grid-template-columns: minmax(0, 1.85fr) minmax(0, 1fr);
    gap: clamp(22px, 3vw, 42px);
    align-items: start;
  }

  .page-contact .pc-channel {
    margin-top: 0;
    position: sticky;
    top: calc(var(--header-h-slim) + 20px);
  }
}

@media (min-width: 760px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-step {
    padding: 26px 14px 0 0;
  }

  .page-contact .pc-step::before {
    left: 0;
    top: 0;
    width: 12px;
    height: 12px;
    background: var(--gold);
    transform: rotate(45deg);
  }

  .page-contact .pc-step::after {
    left: 18px;
    right: 6px;
    top: 6px;
    bottom: auto;
    width: auto;
    height: 2px;
  }

  .page-contact .pc-step:last-child::after {
    display: block;
    right: 100%;
    opacity: 0;
  }
}

@media (min-width: 1240px) {
  .page-contact .pc-hero__lead {
    font-size: 18px;
  }

  .page-contact .pc-channel__block {
    padding: 18px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-coop,
  .page-contact .pc-jump__link,
  .page-contact .pc-crumb__link,
  .page-contact .pc-tail__link {
    transition: none;
  }

  .page-contact .pc-coop:hover,
  .page-contact .pc-coop:focus-within {
    transform: none;
  }
}
<<<END>>>