.page-contact {
  --pc-gap: clamp(20px, 3vw, 36px);
  --pc-card-pad: clamp(18px, 2.4vw, 26px);
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-contact .pc-layout {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(16px, 2.5vw, 28px);
}

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

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding: clamp(18px, 3vw, 34px) 0 clamp(24px, 4vw, 44px);
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
  opacity: .55;
}

.page-contact .pc-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  align-items: end;
}

.page-contact .pc-hero__title {
  margin: 10px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 6.4vw, 68px);
  line-height: .94;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .pc-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-2);
}

.page-contact .pc-panel {
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(123, 92, 255, .22), transparent 62%),
    var(--ink-2);
  padding: var(--pc-card-pad);
}

.page-contact .pc-panel__row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(124, 138, 165, .35);
}

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

.page-contact .pc-panel__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-contact .pc-panel__value {
  font-size: 15px;
  line-height: 1.55;
  color: var(--paper);
  text-align: right;
}

.page-contact .pc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

/* ---------- 区块通用 ---------- */
.page-contact .pc-section {
  padding: clamp(36px, 5vw, 60px) 0;
  scroll-margin-top: 96px;
}

.page-contact .pc-hint {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

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

.page-contact .divider {
  border: 0;
  height: 1px;
  background: rgba(34, 49, 79, .9);
}

/* ---------- 图 ---------- */
.page-contact .pc-figure {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
}

.page-contact .pc-figure .media-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--grid);
}

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

.page-contact .pc-figure .media-frame__caption {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .04em;
  color: var(--slate);
}

/* ---------- 分流卡 ---------- */
.page-contact .pc-lanes {
  display: grid;
  gap: 14px;
}

.page-contact .pc-lane {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background: var(--ink-2);
  padding: calc(var(--pc-card-pad) + 6px) var(--pc-card-pad) var(--pc-card-pad);
  min-width: 0;
}

.page-contact .pc-lane::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.page-contact .pc-lane--1::before {
  background: linear-gradient(90deg, var(--cyan), rgba(0, 227, 180, .15));
}

.page-contact .pc-lane--2::before {
  background: linear-gradient(90deg, var(--violet), rgba(123, 92, 255, .12));
}

.page-contact .pc-lane--3::before {
  background: linear-gradient(90deg, var(--amber), rgba(255, 176, 32, .12));
}

.page-contact .pc-lane__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-contact .pc-lane--3 .pc-lane__num {
  color: var(--amber);
}

.page-contact .pc-lane__title {
  margin: 0 0 8px;
  font-size: 20px;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .pc-lane__meta {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--paper-2);
}

.page-contact .pc-lane__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .pc-lane__details {
  margin-top: 14px;
  border-top: 1px dashed rgba(124, 138, 165, .3);
  padding-top: 12px;
}

.page-contact .pc-lane__details summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--grid);
  border-radius: var(--pill);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--paper);
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

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

.page-contact .pc-lane__details summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-contact .pc-lane__details[open] summary::after {
  content: "−";
}

.page-contact .pc-lane__details summary:hover,
.page-contact .pc-lane__details summary:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-contact .pc-lane__list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .pc-lane__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--paper-2);
}

.page-contact .pc-lane__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: .75;
}

/* ---------- 渠道 ---------- */
.page-contact .pc-split {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  align-items: start;
  min-width: 0;
}

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

.page-contact .pc-defs__row {
  display: grid;
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(34, 49, 79, .9);
}

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

.page-contact .pc-defs__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-contact .pc-defs__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .pc-defs__row dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 227, 180, .45);
}

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

/* ---------- 纸色来信区 ---------- */
.page-contact .pc-paper {
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius);
  border: 2px solid rgba(16, 26, 46, .08);
  box-shadow: 0 18px 40px -28px rgba(0, 0, 0, .9);
  padding: clamp(20px, 3vw, 32px);
}

.page-contact .pc-paper__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--ink-2);
}

.page-contact .pc-mail {
  margin: 0 0 16px;
  padding: 14px 16px;
  border: 1px dashed rgba(16, 26, 46, .35);
  border-radius: 14px;
  background: rgba(16, 26, 46, .05);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--ink-2);
  white-space: pre-wrap;
  word-break: break-word;
}

.page-contact .pc-mail code {
  font-family: inherit;
}

.page-contact .pc-paper__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-contact .pc-checks {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .pc-checks li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-contact .pc-checks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: #0a7a63;
}

/* ---------- 合作 ---------- */
.page-contact .pc-partners {
  gap: 14px;
}

.page-contact .pc-partners .card {
  background: var(--ink-3);
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  padding: var(--pc-card-pad);
}

.page-contact .pc-partners .card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--violet);
}

.page-contact .pc-partners .card__title {
  color: var(--paper);
}

.page-contact .pc-partners .card__text {
  color: var(--slate);
}

/* ---------- 地址 ---------- */
.page-contact .pc-address {
  border: 1px solid var(--grid);
  border-radius: var(--radius);
  background:
    linear-gradient(160deg, rgba(0, 227, 180, .08), transparent 55%),
    var(--ink-2);
  padding: var(--pc-card-pad);
}

.page-contact .pc-defs--tight .pc-defs__row dd {
  font-size: 15px;
}

/* ---------- 流程 ---------- */
.page-contact .pc-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  counter-reset: pcflow;
}

.page-contact .pc-flow__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  border-left: 1px solid rgba(34, 49, 79, .9);
  padding: 0 0 14px 16px;
}

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

.page-contact .pc-flow__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--amber);
  line-height: 1.9;
}

.page-contact .pc-flow__head {
  margin: 0 0 4px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .pc-flow__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 侧边索引 ---------- */
.page-contact .pc-index {
  display: none;
}

.page-contact .pc-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--slate);
}

.page-contact .pc-index .section-index {
  display: grid;
  gap: 2px;
}

.page-contact .pc-index .section-index__link {
  display: block;
  padding: 8px 0 8px 12px;
  border-left: 1px solid rgba(34, 49, 79, .9);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--slate);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .pc-index .section-index__link:hover,
.page-contact .pc-index .section-index__link:focus-visible {
  color: var(--paper);
}

.page-contact .pc-index .section-index__link[aria-current="true"] {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-contact .pc-lanes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-lane--3 {
    grid-column: 1 / -1;
  }
}

@media (min-width: 860px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
  }

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

  .page-contact .pc-lane--3 {
    grid-column: auto;
  }

  .page-contact .pc-split {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
  }

  .page-contact .pc-defs__row {
    grid-template-columns: 6.5em minmax(0, 1fr);
    gap: 4px 18px;
    align-items: baseline;
  }

  .page-contact .pc-defs__row dt {
    text-align: right;
  }

  .page-contact .pc-flow__item {
    grid-template-columns: 48px minmax(0, 1fr);
    padding-left: 22px;
  }
}

@media (min-width: 1024px) {
  .page-contact .pc-layout {
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .pc-index {
    display: block;
    position: sticky;
    top: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-lane__details summary,
  .page-contact .pc-index .section-index__link {
    transition: none;
  }
}
<<<END>>>