.page-contact {
  --pc-pad: clamp(1.15rem, 3vw, 2rem);
  --pc-gap: clamp(1rem, 2.5vw, 1.5rem);
  background:
    radial-gradient(120% 80% at 88% -12%, rgba(95, 242, 210, .08), transparent 62%),
    radial-gradient(90% 60% at 0% 30%, rgba(142, 107, 255, .06), transparent 66%),
    var(--kk-ink);
  padding-block: clamp(1.1rem, 3vw, 2rem) clamp(3rem, 7vw, 5.5rem);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(1.25rem, 3.5vw, 2.25rem);
}

.page-contact .pc-hero {
  max-width: 46rem;
  padding-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

.page-contact .pc-hero__kicker {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--kk-mint);
  margin: 0 0 .9rem;
}

.page-contact .pc-hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7.2vw, 4.2rem);
  font-weight: 700;
  line-height: .98;
  letter-spacing: -.01em;
  color: var(--kk-paper);
  margin: 0 0 1rem;
  text-wrap: balance;
}

.page-contact .pc-hero__lead {
  font-size: clamp(1rem, 1.6vw, 1.0625rem);
  line-height: 1.7;
  color: var(--kk-paper-88);
  max-width: 34em;
  margin: 0;
}

/* ---------- 指挥台双栏 ---------- */
.page-contact .pc-console {
  display: grid;
  gap: var(--pc-gap);
  min-width: 0;
}

.page-contact .pc-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--kk-line);
  border-radius: var(--radius);
  padding: var(--pc-pad);
  box-shadow: var(--shadow-card);
}

.page-contact .pc-card--contact {
  background: var(--kk-panel);
  color: var(--kk-paper);
}

.page-contact .pc-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .22;
  filter: grayscale(.35) contrast(1.06);
  pointer-events: none;
}

.page-contact .pc-card--contact::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(11, 43, 38, .55), rgba(11, 43, 38, .92) 72%);
  pointer-events: none;
}

.page-contact .pc-card__inner {
  position: relative;
  z-index: 1;
}

.page-contact .pc-contact__title {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  line-height: 1.05;
  font-weight: 700;
  color: var(--kk-paper);
  margin: 0 0 1.35rem;
}

.page-contact .pc-contact__row + .pc-contact__row {
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--kk-line);
}

.page-contact .pc-contact__label {
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--kk-clay);
}

.page-contact .pc-contact__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 4.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--kk-mint);
  text-decoration: none;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .pc-contact__value:hover,
.page-contact .pc-contact__value:focus-visible {
  text-decoration: underline;
  text-underline-offset: 6px;
  text-decoration-thickness: 2px;
}

.page-contact .pc-contact__hint {
  margin: .45rem 0 0;
  font-size: .8125rem;
  line-height: 1.55;
  color: var(--kk-paper-60);
}

.page-contact .pc-contact__note {
  margin: 1.35rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--kk-line);
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--kk-paper-76);
}

.page-contact .pc-card--paths {
  background: rgba(42, 47, 46, .72);
  border-color: var(--kk-line);
}

.page-contact .pc-paths__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  line-height: 1.1;
  font-weight: 700;
  color: var(--kk-paper);
  margin: 0 0 .6rem;
}

.page-contact .pc-paths__lead {
  margin: 0 0 1.15rem;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--kk-paper-76);
}

.page-contact .pc-paths {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .pc-path {
  padding: .85rem 0;
  border-top: 1px solid var(--kk-line);
}

.page-contact .pc-path:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .pc-path__title {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin: 0 0 .3rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--kk-paper);
}

.page-contact .pc-path__title::before {
  content: "";
  flex: none;
  width: .5rem;
  height: .5rem;
  background: var(--kk-mint);
  transform: rotate(45deg);
  border-radius: 1px;
}

.page-contact .pc-path__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.68;
  color: var(--kk-paper-76);
}

.page-contact .pc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.25rem;
}

/* ---------- 章节节奏 ---------- */
.page-contact .pc-block {
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .section-head {
  margin-bottom: clamp(1.15rem, 3vw, 1.75rem);
  max-width: 44rem;
}

.page-contact .section-head__num {
  font-family: var(--font-mono);
  letter-spacing: .2em;
  color: var(--kk-clay);
}

.page-contact .section-head__title {
  color: var(--kk-paper);
}

.page-contact .section-head__lead {
  color: var(--kk-paper-76);
}

/* ---------- 合作分类（纯 CSS 分段切换） ---------- */
.page-contact .pc-tabbar {
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  padding-bottom: .4rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-contact .pc-tabbar::-webkit-scrollbar {
  display: none;
}

.page-contact .pc-tab-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  overflow: hidden;
  clip-path: inset(50%);
}

.page-contact .pc-tab-label {
  flex: none;
  cursor: pointer;
  padding: .5rem 1.05rem;
  border: 1px solid var(--kk-line);
  border-radius: 999px;
  font-size: .875rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--kk-paper-76);
  background: transparent;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .pc-tab-label:hover {
  border-color: var(--kk-moss);
  color: var(--kk-paper);
}

.page-contact .pc-tab-input:checked + .pc-tab-label {
  background: var(--kk-mint);
  border-color: var(--kk-mint);
  color: var(--kk-ink-deep);
}

.page-contact .pc-tab-input:focus-visible + .pc-tab-label {
  outline: 2px solid var(--kk-mint);
  outline-offset: 3px;
}

.page-contact .pc-panels {
  margin-top: 1.1rem;
}

.page-contact .pc-panel {
  display: none;
  border: 1px solid var(--kk-line);
  border-left: 3px solid var(--kk-violet);
  border-radius: var(--radius-sm);
  background: rgba(18, 59, 51, .5);
  padding: var(--pc-pad);
}

.page-contact #pc-tab-content:checked ~ .pc-panels > #pc-panel-content,
.page-contact #pc-tab-city:checked ~ .pc-panels > #pc-panel-city,
.page-contact #pc-tab-campus:checked ~ .pc-panels > #pc-panel-campus,
.page-contact #pc-tab-brand:checked ~ .pc-panels > #pc-panel-brand {
  display: block;
}

.page-contact .pc-panel__title {
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--kk-paper);
  margin: 0 0 .5rem;
}

.page-contact .pc-panel__text {
  margin: 0 0 1rem;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--kk-paper-76);
  max-width: 34em;
}

.page-contact .pc-needs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-contact .pc-needs li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .6rem;
  padding-top: .55rem;
  border-top: 1px solid var(--kk-line);
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--kk-paper-88);
}

.page-contact .pc-needs li::before {
  content: "—";
  font-family: var(--font-mono);
  color: var(--kk-clay);
}

/* ---------- 四步流程 ---------- */
.page-contact .pc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .pc-step {
  position: relative;
  min-width: 0;
  border: 1px solid var(--kk-line);
  border-radius: var(--radius-sm);
  background: rgba(18, 59, 51, .45);
  padding: 1.1rem 1.15rem 1.2rem;
}

.page-contact .pc-step + .pc-step::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -1rem;
  width: 1px;
  height: 1rem;
  transform: translateX(-50%);
  background: linear-gradient(var(--kk-mint), rgba(95, 242, 210, .1));
}

.page-contact .pc-step__num {
  margin: 0 0 .45rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--kk-track);
}

.page-contact .pc-step__title {
  margin: 0 0 .4rem;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--kk-paper);
}

.page-contact .pc-step__text {
  margin: 0;
  font-size: .875rem;
  line-height: 1.65;
  color: var(--kk-paper-76);
}

.page-contact .pc-figure {
  margin: 1.25rem 0 0;
  border: 1px solid var(--kk-line);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--kk-slate);
}

.page-contact .pc-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  opacity: .92;
}

.page-contact .pc-figure .figure__caption {
  padding: .8rem 1rem;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--kk-paper-60);
  border-top: 1px solid var(--kk-line);
}

/* ---------- 联系地址 ---------- */
.page-contact .pc-address {
  display: grid;
  gap: 1.15rem;
  border: 1px solid var(--kk-line);
  border-radius: var(--radius);
  padding: var(--pc-pad);
  background:
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(110, 139, 116, .14) 47px 48px),
    repeating-linear-gradient(0deg, transparent 0 47px, rgba(110, 139, 116, .14) 47px 48px),
    var(--kk-slate);
}

.page-contact .pc-address__label {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--kk-clay);
}

.page-contact .pc-address__value {
  margin: 0;
  font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--kk-paper);
}

.page-contact .pc-address__text {
  margin: 0 0 .6rem;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--kk-paper-76);
}

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

.page-contact .pc-inline-link {
  color: var(--kk-mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 242, 210, .45);
}

.page-contact .pc-inline-link:hover,
.page-contact .pc-inline-link:focus-visible {
  border-bottom-color: var(--kk-mint);
}

.page-contact .pc-backtop {
  display: inline-block;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--kk-paper-60);
  text-decoration: none;
  border-bottom: 1px solid var(--kk-line);
  padding-bottom: .2rem;
}

.page-contact .pc-backtop:hover,
.page-contact .pc-backtop:focus-visible {
  color: var(--kk-mint);
  border-bottom-color: var(--kk-mint);
}

@media (min-width: 760px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .page-contact .pc-step + .pc-step::before {
    left: 50%;
    top: -1.1rem;
    height: 1.1rem;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-console {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: start;
  }

  .page-contact .pc-address {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
    gap: 2rem;
  }

  .page-contact .pc-address__main {
    border-right: 1px solid var(--kk-line);
    padding-right: 2rem;
  }
}

@media (min-width: 1020px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-step + .pc-step::before {
    left: -1.1rem;
    top: 50%;
    width: 1.1rem;
    height: 1px;
    transform: translateY(-50%);
    background: linear-gradient(90deg, rgba(95, 242, 210, .15), var(--kk-mint));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-tab-label {
    transition: none;
  }
}
<<<END>>>