.page-contact {
  --pc-panel: var(--ink-800);
  --pc-card: var(--ink-700);
  --pc-space: clamp(52px, 7vw, 100px);
  position: relative;
  padding-bottom: var(--pc-space);
  color: var(--body-text);
  background:
    radial-gradient(1100px 520px at 84% -6%, rgba(0, 229, 208, .08), transparent 62%),
    radial-gradient(760px 420px at 6% 34%, rgba(168, 85, 247, .06), transparent 66%),
    var(--ink-900);
}

/* 面包屑 */
.page-contact .ht-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.page-contact .ht-breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .ht-breadcrumb__link:hover,
.page-contact .ht-breadcrumb__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .ht-breadcrumb__item {
  color: var(--white);
}

/* 首屏 */
.page-contact .pc-hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  padding: clamp(26px, 4vw, 50px) 0 clamp(42px, 5vw, 74px);
}

.page-contact .pc-hero__slab {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(114deg,
      rgba(0, 229, 208, .11) 0 30%,
      rgba(168, 85, 247, .08) 30% 46%,
      transparent 46% 100%);
  clip-path: polygon(0 0, 100% 0, 78% 100%, 0 90%);
}

.page-contact .pc-hero__head,
.page-contact .pc-hero__panel {
  position: relative;
  z-index: 1;
}

.page-contact .pc-hero .ht-eyebrow {
  display: inline-block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .pc-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6vw, 66px);
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 14em;
}

.page-contact .pc-hero__lede {
  margin: 20px 0 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-contact .pc-hero__panel {
  align-self: end;
  padding: 22px 22px 26px;
  background: var(--pc-panel);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
}

.page-contact .pc-hero__panel-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .pc-hero__panel-time {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.2;
  color: var(--white);
}

.page-contact .pc-hero__panel-time span {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-contact .pc-hero__panel-note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 区块通用 */
.page-contact .ht-section {
  margin-block: var(--pc-space) 0;
}

.page-contact .ht-section__note {
  max-width: 52em;
}

/* 三类主题卡：错位排列 */
.page-contact .pc-topics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 32px;
}

.page-contact .pc-topic {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 30px 22px 26px;
  background: var(--pc-card);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line-soft);
  overflow: hidden;
}

.page-contact .pc-topic--a { border-left-color: var(--cyan); }
.page-contact .pc-topic--b { border-left-color: var(--orange); }
.page-contact .pc-topic--c { border-left-color: var(--violet); }

.page-contact .pc-topic__no {
  position: absolute;
  top: 4px;
  right: 14px;
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 60px;
  line-height: 1;
  color: rgba(233, 238, 250, .055);
  pointer-events: none;
  user-select: none;
}

.page-contact .pc-topic__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .pc-topic__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 2.4vw, 26px);
  line-height: 1.25;
  color: var(--white);
}

.page-contact .pc-topic__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body-text);
}

.page-contact .pc-topic__ask {
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  display: grid;
  gap: 8px;
  border-top: 1px solid var(--line);
}

.page-contact .pc-topic__ask li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .pc-topic__ask li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--line-soft);
}

.page-contact .pc-topic__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, .35);
  padding-bottom: 2px;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

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

/* 图形容器 */
.page-contact .pc-figure {
  margin: 34px 0 0;
}

.page-contact .pc-figure .ht-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 联系长条 */
.page-contact .pc-rows {
  margin-top: 30px;
  border-top: 1px solid var(--line);
}

.page-contact .pc-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .pc-row__tag {
  margin: 0;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .pc-row--mail .pc-row__tag { color: var(--cyan); }
.page-contact .pc-row--tel .pc-row__tag { color: var(--orange); }

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

.page-contact .pc-row__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.2vw, 24px);
  line-height: 1.3;
  color: var(--white);
}

.page-contact .pc-row__value {
  display: inline-block;
  margin: 14px 0 0;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 20px);
  letter-spacing: .02em;
  color: var(--white);
  background: var(--ink-800);
  border: 1px dashed var(--line-soft);
  word-break: break-all;
  user-select: all;
}

.page-contact .pc-row__text {
  margin: 16px 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-contact .pc-row__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  max-width: 46em;
}

.page-contact .pc-row__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--body-text);
}

.page-contact .pc-row__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .74em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}

.page-contact .pc-row__meta {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--muted);
}

/* 合作与数据对接 */
.page-contact .pc-coop__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 32px;
}

.page-contact .pc-coop__brief {
  padding: 26px 22px;
  background: var(--pc-panel);
  border: 1px solid var(--line);
  border-left: 2px solid var(--violet);
}

.page-contact .pc-coop__lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-text);
}

.page-contact .pc-coop__lead:last-of-type {
  margin-bottom: 0;
}

.page-contact .pc-coop__btn {
  margin-top: 22px;
}

.page-contact .pc-coop__checklist {
  padding: 26px 22px;
  background: var(--pc-card);
  border: 1px solid var(--line);
}

.page-contact .pc-coop__check-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .pc-coop__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.65;
  color: var(--body-text);
  cursor: pointer;
}

.page-contact .pc-coop__item:hover {
  color: var(--white);
}

.page-contact .pc-coop__box {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 4px 0 0;
  accent-color: var(--violet);
  cursor: pointer;
}

/* 常见咨询主题 */
.page-contact .pc-faq {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .pc-faq__item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--ink-900);
}

.page-contact .pc-faq__q {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.45;
  color: var(--white);
}

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

.page-contact .pc-faq__go {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 41, .35);
  padding-bottom: 2px;
  transition: border-color .2s var(--ease);
}

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

/* 收尾 */
.page-contact .pc-cta {
  margin-block: var(--pc-space) 0;
  padding: clamp(30px, 4vw, 52px) clamp(20px, 3vw, 44px);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 3px solid var(--orange);
}

.page-contact .pc-cta__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .pc-cta__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-contact .pc-cta__text {
  margin: 16px 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-text);
}

.page-contact .pc-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* 桌面布局 */
@media (min-width: 760px) {
  .page-contact .pc-topics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .pc-coop__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 26px;
  }
}

@media (min-width: 1000px) {
  .page-contact .pc-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(290px, .72fr);
    align-items: end;
  }

  .page-contact .pc-hero__panel {
    transform: translateY(-18px);
  }

  .page-contact .pc-topics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
    align-items: start;
  }

  .page-contact .pc-topic:nth-child(2) {
    margin-top: 54px;
  }

  .page-contact .pc-topic:nth-child(3) {
    margin-top: 22px;
  }

  .page-contact .pc-row {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: 34px;
    align-items: start;
    padding: 34px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-hero__panel {
    transform: none;
  }
}
</main>