.page-contact {
  --pc-gap: clamp(18px, 2.6vw, 32px);
  --pc-ease: cubic-bezier(.22, .61, .36, 1);
  background: var(--yb-ice);
  color: var(--yb-navy);
  font-family: var(--yb-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  margin: 0;
  font-family: var(--yb-display);
  letter-spacing: -.02em;
  line-height: 1.14;
  font-weight: 800;
}

.page-contact a {
  color: var(--yb-navy-3);
  text-decoration-color: var(--yb-cyan);
  text-underline-offset: 3px;
}

.page-contact a:hover {
  color: var(--yb-cyan);
}

.page-contact a:focus-visible {
  outline: none;
  box-shadow: var(--yb-focus);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 44px) 0 clamp(30px, 5vw, 56px);
  background: var(--yb-navy);
  color: var(--yb-ice);
}

.page-contact .pc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(201, 220, 234, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 220, 234, .07) 1px, transparent 1px);
  background-size: 72px 72px;
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(31, 224, 210, .18), transparent 68%);
  pointer-events: none;
}

.page-contact .pc-hero .yb-shell {
  position: relative;
  z-index: 1;
}

.page-contact .yb-crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-family: var(--yb-mono);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-contact .yb-crumb li {
  color: var(--yb-muted);
}

.page-contact .yb-crumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: rgba(91, 114, 136, .7);
}

.page-contact .yb-crumb a {
  color: var(--yb-ice-2);
  text-decoration: none;
}

.page-contact .yb-crumb a:hover {
  color: var(--yb-cyan);
}

.page-contact .pc-hero__grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

.page-contact .pc-hero__title {
  font-size: clamp(30px, 5.4vw, 56px);
  max-width: 18ch;
  text-wrap: balance;
}

.page-contact .pc-hero__lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--yb-ice-2);
}

.page-contact .pc-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  padding: 0;
  background: rgba(201, 220, 234, .18);
  border: 1px solid rgba(201, 220, 234, .18);
}

.page-contact .pc-hero__stat {
  padding: 14px 16px;
  background: var(--yb-navy);
}

.page-contact .pc-hero__stat dt {
  font-family: var(--yb-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--yb-cyan);
  margin-bottom: 4px;
}

.page-contact .pc-hero__stat dd {
  margin: 0;
  font-family: var(--yb-mono);
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 700;
  color: var(--yb-paper);
  line-height: 1.1;
}

/* ---------- 区块通用 ---------- */
.page-contact .pc-head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-contact .pc-head h2 {
  font-size: clamp(25px, 3.3vw, 40px);
  max-width: 22ch;
}

.page-contact .pc-head__p {
  margin: 0;
  max-width: 66ch;
  color: var(--yb-muted);
  font-size: 15.5px;
}

.page-contact .pc-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--yb-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--yb-muted);
}

.page-contact .pc-eyebrow::before {
  content: "";
  width: 20px;
  height: 2px;
  background: var(--yb-cyan);
}

.page-contact .pc-eyebrow--light {
  color: var(--yb-cyan);
}

.page-contact .pc-eyebrow--light::before {
  background: var(--yb-amber);
}

.page-contact .pc-head__media {
  overflow: hidden;
  border: 1px solid var(--yb-line);
  box-shadow: var(--yb-shadow);
}

.page-contact .pc-head__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-contact .pc-head--media {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(26px, 3.4vw, 56px);
  }
}

/* ---------- 合作方向 ---------- */
.page-contact .pc-tracks__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .pc-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-contact .pc-tracks__list {
  display: grid;
  gap: 10px;
}

.page-contact .pc-tracks__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 3px;
  align-items: center;
  padding: 15px 18px 15px 15px;
  background: var(--yb-paper);
  border: 1px solid var(--yb-line);
  border-left: 3px solid var(--yb-line);
  cursor: pointer;
  user-select: none;
  transition: background .2s var(--pc-ease), border-color .2s var(--pc-ease),
    color .2s var(--pc-ease), transform .2s var(--pc-ease);
}

.page-contact .pc-tracks__item:hover {
  border-left-color: var(--yb-cyan);
  transform: translateX(2px);
}

.page-contact .pc-tracks__idx {
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--yb-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--yb-cyan);
}

.page-contact .pc-tracks__name {
  font-family: var(--yb-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
}

.page-contact .pc-tracks__hint {
  font-size: 12px;
  letter-spacing: .04em;
  line-height: 1.5;
  color: var(--yb-muted);
}

.page-contact #pc-t1:checked ~ .pc-tracks__list [for="pc-t1"],
.page-contact #pc-t2:checked ~ .pc-tracks__list [for="pc-t2"],
.page-contact #pc-t3:checked ~ .pc-tracks__list [for="pc-t3"],
.page-contact #pc-t4:checked ~ .pc-tracks__list [for="pc-t4"] {
  background: var(--yb-navy);
  border-color: var(--yb-navy);
  border-left-color: var(--yb-cyan);
  color: var(--yb-ice);
}

.page-contact #pc-t1:checked ~ .pc-tracks__list [for="pc-t1"] .pc-tracks__hint,
.page-contact #pc-t2:checked ~ .pc-tracks__list [for="pc-t2"] .pc-tracks__hint,
.page-contact #pc-t3:checked ~ .pc-tracks__list [for="pc-t3"] .pc-tracks__hint,
.page-contact #pc-t4:checked ~ .pc-tracks__list [for="pc-t4"] .pc-tracks__hint {
  color: var(--yb-ice-2);
}

.page-contact .pc-panels {
  min-width: 0;
}

.page-contact .pc-panel {
  display: none;
  padding: clamp(20px, 3vw, 34px);
  background: var(--yb-paper);
  border: 1px solid var(--yb-line);
  border-top: 2px solid var(--yb-navy);
  box-shadow: var(--yb-shadow);
}

.page-contact #pc-t1:checked ~ .pc-panels #pc-p1,
.page-contact #pc-t2:checked ~ .pc-panels #pc-p2,
.page-contact #pc-t3:checked ~ .pc-panels #pc-p3,
.page-contact #pc-t4:checked ~ .pc-panels #pc-p4 {
  display: block;
  animation: pc-panel-in .3s var(--pc-ease) both;
}

@keyframes pc-panel-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-contact .pc-panel__label {
  margin: 0 0 12px;
  font-family: var(--yb-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--yb-cyan);
}

.page-contact .pc-panel__title {
  font-size: clamp(20px, 2.3vw, 28px);
  margin-bottom: 14px;
  max-width: 24ch;
}

.page-contact .pc-panel__text {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  color: var(--yb-muted);
  font-size: 15.5px;
  max-width: 64ch;
}

.page-contact .pc-panel__specs {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--yb-line);
}

.page-contact .pc-spec {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .pc-spec dt {
  font-family: var(--yb-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--yb-muted);
}

.page-contact .pc-spec dd {
  margin: 0;
  font-size: 15px;
  color: var(--yb-navy);
}

.page-contact .pc-panel__foot {
  margin: 18px 0 0;
  font-size: 14.5px;
  color: var(--yb-muted);
}

@media (min-width: 880px) {
  .page-contact .pc-tracks__grid {
    grid-template-columns: minmax(250px, 300px) minmax(0, 1fr);
    gap: clamp(22px, 3vw, 46px);
    align-items: start;
  }

  .page-contact .pc-tracks__list {
    position: sticky;
    top: calc(var(--yb-cmd-h) + var(--yb-strip-h) + 18px);
  }

  .page-contact .pc-spec {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

/* ---------- 对接流程 ---------- */
.page-contact .pc-flip {
  background: var(--yb-ice-2);
}

.page-contact .pc-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(22px, 3vw, 30px);
}

.page-contact .pc-step {
  position: relative;
  padding-top: 46px;
}

.page-contact .pc-step::before {
  content: none;
}

.page-contact .pc-step__no {
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: var(--yb-navy);
  color: var(--yb-cyan);
  font-family: var(--yb-mono);
  font-size: 12px;
  font-weight: 700;
}

.page-contact .pc-step h3 {
  font-size: 21px;
  margin-bottom: 8px;
}

.page-contact .pc-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--yb-muted);
  max-width: 40ch;
}

@media (min-width: 780px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(18px, 2.4vw, 34px);
  }

  .page-contact .pc-step::before {
    content: "";
    position: absolute;
    top: 14px;
    left: 30px;
    right: calc(-1 * clamp(18px, 2.4vw, 34px));
    border-top: 1px dashed var(--yb-line);
  }

  .page-contact .pc-step:last-child::before {
    content: none;
  }
}

/* ---------- 来访与接待 ---------- */
.page-contact .pc-visit__grid {
  display: grid;
  gap: clamp(22px, 3.2vw, 46px);
}

.page-contact .pc-visit__media {
  overflow: hidden;
  border: 1px solid var(--yb-line);
  box-shadow: var(--yb-shadow);
}

.page-contact .pc-visit__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .pc-visit__body h2 {
  font-size: clamp(24px, 3vw, 36px);
  margin: 12px 0 14px;
  max-width: 20ch;
}

.page-contact .pc-visit__lede {
  margin: 0 0 22px;
  color: var(--yb-muted);
  font-size: 15.5px;
  max-width: 60ch;
}

.page-contact .pc-visit__link {
  margin: 20px 0 0;
  font-size: 14.5px;
  color: var(--yb-muted);
}

.page-contact .pc-acc {
  border-top: 1px solid var(--yb-line);
}

.page-contact .pc-acc summary {
  position: relative;
  padding: 14px 30px 14px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--yb-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--yb-navy);
}

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

.page-contact .pc-acc summary::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--yb-mono);
  font-size: 18px;
  color: var(--yb-cyan);
}

.page-contact .pc-acc[open] summary::after {
  content: "\2013";
}

.page-contact .pc-acc summary:hover {
  color: var(--yb-navy-3);
}

.page-contact .pc-acc p {
  margin: 0;
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yb-muted);
  max-width: 62ch;
}

@media (min-width: 900px) {
  .page-contact .pc-visit__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: center;
  }
}

/* ---------- 常见问题 ---------- */
.page-contact .pc-faq {
  display: grid;
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .pc-acc--faq summary {
  font-size: 17px;
}

.page-contact .pc-acc--faq p {
  max-width: 72ch;
}

/* ---------- 联系带 ---------- */
.page-contact .pc-band {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 6vw, 82px) 0 clamp(26px, 3.6vw, 44px);
  background: var(--yb-navy);
  color: var(--yb-ice);
}

.page-contact .pc-band::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(31, 224, 210, .07) 1px, transparent 1px);
  background-size: 100% 46px;
}

.page-contact .pc-band .yb-shell {
  position: relative;
  z-index: 1;
}

.page-contact .pc-band__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 3.4vw, 42px);
}

.page-contact .pc-band__head h2 {
  font-size: clamp(25px, 3.3vw, 40px);
  max-width: 22ch;
}

.page-contact .pc-band__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  color: var(--yb-ice-2);
}

.page-contact .pc-band__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .pc-band__item {
  padding: 18px 20px 20px;
  background: rgba(14, 37, 68, .62);
  border: 1px solid rgba(201, 220, 234, .2);
  border-top: 2px solid var(--yb-cyan);
}

.page-contact .pc-band__item--amber {
  border-top-color: var(--yb-amber);
}

.page-contact .pc-band__item--plain {
  border-top-color: var(--yb-ice-2);
}

.page-contact .pc-band__k {
  margin: 0 0 10px;
  font-family: var(--yb-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--yb-cyan);
}

.page-contact .pc-band__v {
  margin: 0;
  font-family: var(--yb-mono);
  font-size: clamp(16px, 1.7vw, 21px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--yb-paper);
  overflow-wrap: anywhere;
}

.page-contact .pc-band__v--text {
  font-family: var(--yb-body);
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 600;
}

.page-contact .pc-band__n {
  margin: 10px 0 0;
  font-size: 13px;
  color: rgba(220, 234, 245, .74);
}

.page-contact .pc-band__route {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 3.4vw, 40px);
  padding: clamp(18px, 2.4vw, 28px);
  background: rgba(31, 224, 210, .06);
  border: 1px dashed rgba(31, 224, 210, .42);
}

.page-contact .pc-band__route-title {
  margin: 0;
  font-family: var(--yb-display);
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--yb-paper);
}

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

.page-contact .pc-band__route-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--yb-ice-2);
}

.page-contact .pc-band__route-list li::before {
  content: "\2192";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--yb-mono);
  color: var(--yb-cyan);
}

.page-contact .pc-band__route-note {
  margin: 0;
  font-size: 14px;
  color: rgba(220, 234, 245, .76);
  max-width: 70ch;
}

.page-contact .pc-band__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(22px, 3vw, 34px);
  padding-top: 16px;
  border-top: 1px solid rgba(201, 220, 234, .18);
}

.page-contact .pc-band__note {
  margin: 0;
  font-size: 13.5px;
  color: rgba(220, 234, 245, .7);
}

.page-contact .pc-band__icp {
  margin: 0;
  font-family: var(--yb-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--yb-muted);
}

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

  .page-contact .pc-band__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-band__route-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .page-contact .pc-hero__stat {
    padding: 12px 12px;
  }

  .page-contact .pc-tracks__item {
    padding: 13px 14px 13px 12px;
  }

  .page-contact .pc-band__item {
    padding: 16px 16px 18px;
  }
}
<<<END>>>