.page-contact {
  --pc-body: #C6D6E4;
  --pc-gap: clamp(16px, 2.6vw, 36px);
  --pc-sec: clamp(48px, 7vw, 96px);
  --pc-anchor: 96px;
  background: var(--night-800);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-body);
  font-weight: 800;
  color: var(--paper);
  letter-spacing: -.01em;
}

.page-contact .pc-body {
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--pc-body);
  max-width: 44ch;
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding: clamp(18px, 2.4vw, 32px) 0 var(--pc-sec);
  border-bottom: var(--border);
  background-color: var(--night-800);
}

.page-contact .pc-hero__grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(20px, 3vw, 44px);
}

.page-contact .pc-hero__lead h1 {
  font-size: var(--fs-h1);
  line-height: 1.02;
  margin: 0 0 calc(var(--u) * 2);
  max-width: 15ch;
}

.page-contact .pc-hero__lead .section-eyebrow {
  margin-bottom: calc(var(--u) * 1.5);
}

.page-contact .pc-lead {
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--pc-body);
  max-width: 46ch;
  margin: 0 0 calc(var(--u) * 3);
}

.page-contact .pc-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
  margin-bottom: calc(var(--u) * 4);
}

.page-contact .pc-hero__meta {
  display: grid;
  gap: calc(var(--u) * 2);
  margin: 0;
  padding-top: calc(var(--u) * 2.5);
  border-top: 1px dashed var(--line-blue);
}

.page-contact .pc-hero__meta dt {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: .1em;
  color: var(--cool);
  margin: 0;
}

.page-contact .pc-hero__meta dd {
  margin: 4px 0 0;
  font-size: var(--fs-small);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .pc-hero__figure {
  margin: 0;
  border: var(--border);
  background: var(--night-700);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-contact .pc-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.92) contrast(1.08) brightness(.86);
}

/* ---------- 合作方向 ---------- */
.page-contact .pc-dirs {
  padding: var(--pc-sec) 0;
  border-bottom: var(--border);
}

.page-contact .pc-dirs__grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .pc-dirs__intro h2 {
  font-size: var(--fs-h2);
  line-height: 1.14;
  margin: 0 0 calc(var(--u) * 2);
  max-width: 18ch;
}

.page-contact .pc-dirs__text {
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--pc-body);
  max-width: 40ch;
  margin: 0;
}

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

.page-contact .pc-dir {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: calc(var(--u) * 2);
  padding: calc(var(--u) * 3) 0;
  border-bottom: var(--border);
  transition: background-color .18s var(--ease), padding-left .18s var(--ease);
}

.page-contact .pc-dir:hover,
.page-contact .pc-dir:focus-within {
  background: var(--night-700);
  padding-left: calc(var(--u) * 1.5);
}

.page-contact .pc-dir__no {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--orange);
}

.page-contact .pc-dir__body h3 {
  margin: 0 0 6px;
  font-size: var(--fs-h3);
}

.page-contact .pc-dir__body p {
  margin: 0 0 calc(var(--u) * 1.5);
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--pc-body);
}

/* ---------- 联系渠道 ---------- */
.page-contact .pc-channels {
  padding: var(--pc-sec) 0;
  scroll-margin-top: var(--pc-anchor);
  border-bottom: var(--border);
  background: linear-gradient(160deg, var(--night-700) 0%, var(--night-800) 68%);
}

.page-contact .pc-channels__grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .pc-channels__aside h2 {
  font-size: var(--fs-h2);
  line-height: 1.14;
  margin: 0 0 calc(var(--u) * 2);
  max-width: 16ch;
}

.page-contact .pc-channels__aside .pc-body {
  margin-bottom: calc(var(--u) * 2);
}

.page-contact .pc-mail-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: calc(var(--u) * 1.5);
  padding: 12px 20px;
  background: var(--cyan);
  color: var(--ink);
  font-size: var(--fs-small);
  font-weight: 800;
  text-decoration: none;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard-sm);
  transition: transform .16s var(--ease), box-shadow .16s var(--ease);
}

.page-contact .pc-mail-cta:hover {
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--ink);
}

.page-contact .pc-mail-cta:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

.page-contact .pc-card {
  padding: clamp(20px, 3vw, 34px);
  color: var(--ink);
  background: var(--paper);
  border: var(--border-ink);
  box-shadow: var(--shadow-hard);
}

.page-contact .pc-card__label {
  margin: 0 0 calc(var(--u) * 2);
  padding-bottom: calc(var(--u));
  border-bottom: 2px solid var(--ink);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #0E5A45;
}

.page-contact .pc-contact-list {
  margin: 0;
  display: grid;
}

.page-contact .pc-contact-row {
  display: grid;
  gap: 3px;
  padding: calc(var(--u) * 1.75) 0;
  border-bottom: 1px dashed rgba(5, 9, 15, .28);
}

.page-contact .pc-contact-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .pc-contact-row dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: .08em;
  color: #3E5468;
}

.page-contact .pc-contact-row dd {
  margin: 0;
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .pc-contact-row dd a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--cyan);
}

.page-contact .pc-contact-row dd a:hover,
.page-contact .pc-contact-row dd a:focus-visible {
  border-bottom-color: var(--orange);
}

.page-contact .pc-contact-row dd a:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .pc-card__note {
  margin: calc(var(--u) * 2.5) 0 0;
  padding-left: calc(var(--u) * 1.5);
  border-left: 3px solid var(--orange);
  font-size: var(--fs-small);
  line-height: 1.55;
  color: #3E5468;
}

/* ---------- 沟通准备 ---------- */
.page-contact .pc-prep {
  padding: var(--pc-sec) 0;
  border-bottom: var(--border);
}

.page-contact .pc-prep__grid {
  display: grid;
  gap: calc(var(--pc-gap) * 1.2);
}

.page-contact .pc-prep__intro h2 {
  font-size: var(--fs-h2);
  line-height: 1.14;
  margin: 0 0 calc(var(--u) * 2);
  max-width: 18ch;
}

.page-contact .pc-prep__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: calc(var(--u) * 3);
}

.page-contact .pc-prep__item {
  padding-left: calc(var(--u) * 2);
  border-left: 2px solid var(--line-blue);
  transition: border-color .18s var(--ease);
}

.page-contact .pc-prep__item:hover {
  border-left-color: var(--cyan);
}

.page-contact .pc-prep__no {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: .14em;
  color: var(--orange);
  margin-bottom: 6px;
}

.page-contact .pc-prep__item h3 {
  margin: 0 0 6px;
  font-size: var(--fs-h3);
}

.page-contact .pc-prep__item p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--pc-body);
}

/* ---------- 合作流程 ---------- */
.page-contact .pc-steps {
  padding: var(--pc-sec) 0;
  scroll-margin-top: var(--pc-anchor);
  border-bottom: var(--border);
  background-color: var(--night-900);
}

.page-contact .pc-steps__head {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .pc-steps__head h2 {
  font-size: var(--fs-h2);
  line-height: 1.12;
  margin: 0;
  max-width: 22ch;
}

.page-contact .pc-steps__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .pc-step {
  position: relative;
  padding: calc(var(--u) * 2.5) 0 calc(var(--u) * 2.5) calc(var(--u) * 2);
  border-top: 2px solid var(--line-blue);
  transition: background-color .18s var(--ease);
}

.page-contact .pc-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: -2px;
  height: 2px;
  width: 0;
  background: var(--orange);
  transition: width .24s var(--ease);
}

.page-contact .pc-step:hover::before,
.page-contact .pc-step:focus-within::before {
  width: 100%;
}

.page-contact .pc-step:hover {
  background: rgba(13, 33, 54, .55);
}

.page-contact .pc-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: .16em;
  color: var(--orange);
  margin-bottom: 8px;
}

.page-contact .pc-step h3 {
  margin: 0 0 8px;
  font-size: var(--fs-h3);
}

.page-contact .pc-step p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--pc-body);
}

.page-contact .pc-steps__fig {
  margin: clamp(28px, 4vw, 48px) 0 0;
  border: var(--border);
  background: var(--night-700);
  overflow: hidden;
}

.page-contact .pc-steps__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: contrast(1.05) brightness(.9);
}

/* ---------- 服务响应 ---------- */
.page-contact .pc-response {
  padding: var(--pc-sec) 0;
}

.page-contact .pc-response__grid {
  display: grid;
  gap: calc(var(--pc-gap) * 1.2);
}

.page-contact .pc-response__main h2 {
  font-size: var(--fs-h2);
  line-height: 1.14;
  margin: 0 0 calc(var(--u) * 2);
  max-width: 18ch;
}

.page-contact .pc-response__cards {
  display: grid;
  gap: calc(var(--u) * 2);
}

.page-contact .pc-response__card {
  padding: calc(var(--u) * 2) 0 calc(var(--u) * 2) calc(var(--u) * 2);
  border-left: 3px solid var(--cyan);
  background: transparent;
}

.page-contact .pc-response__card--alt {
  border-left-color: var(--orange);
}

.page-contact .pc-response__card h3 {
  margin: 0 0 8px;
  font-size: var(--fs-h3);
}

.page-contact .pc-response__card p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.6;
  color: var(--pc-body);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .pc-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-contact-row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: calc(var(--u) * 2);
  }

  .page-contact .pc-prep__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: calc(var(--u) * 4) calc(var(--u) * 3);
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .pc-dirs__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .pc-channels__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .pc-prep__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-contact .pc-steps__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-step {
    padding: calc(var(--u) * 3) calc(var(--u) * 2) calc(var(--u) * 3) 0;
  }

  .page-contact .pc-step + .pc-step {
    padding-left: calc(var(--u) * 2.5);
  }

  .page-contact .pc-response__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
    gap: calc(var(--pc-gap) * 1.6);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-dir,
  .page-contact .pc-step,
  .page-contact .pc-step::before,
  .page-contact .pc-mail-cta,
  .page-contact .pc-prep__item {
    transition: none;
  }

  .page-contact .pc-mail-cta:hover {
    transform: none;
  }
}
<<<END>>>