.page-contact {
  --pc-sticky-top: 104px;
  --pc-paper-rule: rgba(22, 27, 46, 0.16);
  position: relative;
  background: var(--deep);
  color: var(--ink);
}

.page-contact .pc-arc {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.page-contact .pc-arc svg {
  position: absolute;
  top: -6%;
  left: -12%;
  width: 124%;
  height: 112%;
  opacity: 0.85;
}

.page-contact > section {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏 ---------- */

.page-contact .pc-hero {
  padding: clamp(84px, 12vw, 150px) 0 clamp(40px, 6vw, 72px);
}

.page-contact .pc-hero .breadcrumbs {
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-contact .pc-hero-grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

.page-contact .pc-hero-fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(150deg, var(--deep-3), var(--deep-2) 60%, rgba(91, 63, 214, 0.3));
  box-shadow: 8px 8px 0 rgba(91, 63, 214, 0.24);
}

.page-contact .pc-hero-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-contact .pc-hero-copy .eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .pc-hero-copy .display-hero {
  margin: 0 0 22px;
  color: var(--ink);
}

.page-contact .pc-hero-copy .lede {
  margin: 0 0 18px;
  color: var(--muted);
  max-width: 46ch;
}

.page-contact .pc-hero-meta {
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
  font-size: var(--fs-note);
  color: var(--muted);
}

/* ---------- 主体两栏 ---------- */

.page-contact .pc-body {
  padding-bottom: clamp(72px, 10vw, 132px);
}

.page-contact .pc-columns {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  align-items: start;
}

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

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

/* ---------- 左栏区块 ---------- */

.page-contact .pc-block {
  padding-block: clamp(32px, 4.4vw, 52px);
  border-top: 1px solid var(--line);
}

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

.page-contact .pc-block-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.page-contact .pc-block-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  border: 1px solid rgba(53, 224, 214, 0.38);
  border-radius: var(--radius);
  padding: 4px 9px;
}

.page-contact .pc-block-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .pc-block-lede {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 58ch;
  color: var(--muted);
  font-size: var(--fs-note);
  line-height: 1.85;
}

/* ---------- 可展开事项 ---------- */

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

.page-contact .pc-ask {
  border: 1px solid var(--line);
  border-left: 3px solid var(--purple);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 26, 61, 0.9), rgba(7, 11, 31, 0.52));
  transition: border-left-color 200ms ease, background 200ms ease;
}

.page-contact .pc-ask[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(180deg, rgba(22, 36, 82, 0.95), rgba(7, 11, 31, 0.6));
}

.page-contact .pc-ask-trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

.page-contact .pc-ask-trigger::-webkit-details-marker {
  display: none;
}

.page-contact .pc-ask-trigger::marker {
  content: "";
}

.page-contact .pc-ask-index {
  flex: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .pc-ask[open] .pc-ask-index {
  color: var(--gold);
}

.page-contact .pc-ask-text {
  display: block;
  min-width: 0;
}

.page-contact .pc-ask-label {
  display: block;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.4;
}

.page-contact .pc-ask-sub {
  display: block;
  margin-top: 3px;
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.5;
}

.page-contact .pc-ask-icon {
  position: relative;
  flex: none;
  margin-left: auto;
  width: 16px;
  height: 16px;
}

.page-contact .pc-ask-icon::before,
.page-contact .pc-ask-icon::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 180ms ease, background 180ms ease;
}

.page-contact .pc-ask-icon::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-contact .pc-ask-icon::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-contact .pc-ask[open] .pc-ask-icon::before {
  background: var(--cyan);
}

.page-contact .pc-ask[open] .pc-ask-icon::after {
  transform: scaleY(0);
}

.page-contact .pc-ask-body {
  padding: 0 18px 18px 50px;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.page-contact .pc-ask-body p {
  margin: 0 0 10px;
}

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

/* ---------- 三步流程 ---------- */

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

.page-contact .pc-step {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

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

.page-contact .pc-step::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 52px;
  bottom: 6px;
  border-left: 1px dashed rgba(74, 98, 168, 0.6);
}

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

.page-contact .pc-step-dot {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(53, 224, 214, 0.42);
  background: radial-gradient(circle at 34% 28%, rgba(53, 224, 214, 0.24), rgba(7, 11, 31, 0.95) 72%);
  color: var(--cyan);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.page-contact .pc-step-body {
  min-width: 0;
  padding-top: 6px;
}

.page-contact .pc-step-title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ink);
}

.page-contact .pc-step-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.85;
}

/* ---------- 合作清单 ---------- */

.page-contact .pc-collab {
  display: grid;
  gap: 14px;
}

.page-contact .pc-collab-card {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--purple);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 26, 61, 0.72), rgba(7, 11, 31, 0.4));
}

.page-contact .pc-collab-card:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-contact .pc-collab-card:nth-child(3) {
  border-top-color: var(--pink);
}

.page-contact .pc-collab-title {
  margin: 14px 0 8px;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--ink);
}

.page-contact .pc-collab-lead {
  margin: 0 0 14px;
  font-size: var(--fs-note);
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .pc-collab-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .pc-collab-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--ink);
}

.page-contact .pc-collab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

/* ---------- 快捷入口 ---------- */

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

.page-contact .pc-shortcut {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 17, 48, 0.5);
  text-decoration: none;
  color: inherit;
  transition: border-color 200ms ease, background 200ms ease, transform 200ms ease;
}

.page-contact .pc-shortcut:hover,
.page-contact .pc-shortcut:focus-visible {
  border-color: var(--cyan);
  background: rgba(16, 26, 61, 0.85);
  transform: translateX(4px);
}

.page-contact .pc-shortcut-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}

.page-contact .pc-shortcut:hover .pc-shortcut-label,
.page-contact .pc-shortcut:focus-visible .pc-shortcut-label {
  color: var(--cyan);
}

.page-contact .pc-shortcut-note {
  font-size: var(--fs-note);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 右侧联系卡片 ---------- */

.page-contact .pc-card {
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-paper-sm);
  overflow: hidden;
}

.page-contact .pc-card-fig {
  margin: 0;
  border-bottom: 1px solid var(--pc-paper-rule);
  background: linear-gradient(135deg, #101A3D, #221350 62%, #5B3FD6);
}

.page-contact .pc-card-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  mix-blend-mode: screen;
  opacity: 0.92;
}

.page-contact .pc-card-body {
  padding: 22px 20px 24px;
}

.page-contact .pc-card-eyebrow {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #5B3FD6;
}

.page-contact .pc-card-eyebrow .star-marker {
  color: #C98A16;
  margin-right: 4px;
}

.page-contact .pc-card-title {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--paper-ink);
  line-height: 1.4;
}

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

.page-contact .pc-contact-item {
  padding: 14px 0;
  border-bottom: 1px dashed var(--pc-paper-rule);
}

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

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

.page-contact .pc-contact-key {
  display: block;
  margin-bottom: 5px;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #6A7391;
}

.page-contact .pc-contact-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: #101A3D;
  word-break: break-word;
}

.page-contact .pc-contact-value--text {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
}

.page-contact .pc-contact-note {
  margin: 7px 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: #55607E;
}

.page-contact .pc-card-foot {
  margin: 18px 0 16px;
  padding-top: 14px;
  border-top: 1px solid var(--pc-paper-rule);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: #55607E;
}

.page-contact .pc-card-btn {
  width: 100%;
  justify-content: center;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .pc-collab {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .pc-hero-grid {
    grid-template-columns: minmax(0, 43fr) minmax(0, 57fr);
  }
}

@media (min-width: 1000px) {
  .page-contact .pc-columns {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
  }

  .page-contact .pc-side {
    position: sticky;
    top: var(--pc-sticky-top);
  }

  .page-contact .pc-ask-body {
    padding-right: 34px;
  }
}

@media (max-width: 420px) {
  .page-contact .pc-ask-trigger {
    gap: 10px;
    padding: 14px 14px;
  }

  .page-contact .pc-ask-body {
    padding: 0 14px 16px 14px;
  }

  .page-contact .pc-step {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 14px;
  }

  .page-contact .pc-step-dot {
    width: 40px;
    height: 40px;
    font-size: 0.72rem;
  }

  .page-contact .pc-step::before {
    left: 19px;
    top: 44px;
  }

  .page-contact .pc-contact-value {
    font-size: 0.8125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-shortcut,
  .page-contact .pc-ask,
  .page-contact .pc-ask-icon::before,
  .page-contact .pc-ask-icon::after {
    transition: none;
  }

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