.page-contact {
  --pc-gap: clamp(16px, 3vw, 28px);
  --pc-block-gap: clamp(26px, 3.6vw, 40px);
}

.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(36px, 6vw, 68px);
  background:
    radial-gradient(circle at 16% 6%, rgba(53, 230, 208, 0.14), transparent 46%),
    radial-gradient(circle at 86% 24%, rgba(242, 180, 65, 0.10), transparent 44%),
    var(--ink-900);
  overflow: hidden;
}

.page-contact .pc-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
  margin-top: clamp(20px, 3vw, 32px);
}

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

.page-contact .pc-hero-tag {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .pc-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.6vw, 44px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: #F4F6FF;
  max-width: 20ch;
}

.page-contact .pc-lede {
  margin: 18px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--text-mute);
  max-width: 48ch;
}

.page-contact .pc-hero-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 3.4vw, 36px);
  background: var(--edge);
  border: var(--bw) solid var(--edge);
}

.page-contact .pc-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px 16px;
  background: var(--ink-900);
}

.page-contact .pc-fact-num {
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .pc-fact-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-mute);
}

.page-contact .pc-hero-media {
  min-width: 0;
  border: var(--bw) solid var(--edge);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard-cyan);
}

.page-contact .pc-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 章节速览条 ---------- */
.page-contact .pc-chapters {
  margin-top: clamp(26px, 3.6vw, 40px);
  border-top: 1px solid var(--edge);
  border-bottom: 1px solid var(--edge);
}

.page-contact .pc-chapters-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}

.page-contact .pc-chapters-list li {
  border-right: 1px solid var(--edge);
}

.page-contact .pc-chapters-list a {
  display: block;
  padding: 11px 15px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-mute);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.page-contact .pc-chapters-list a:hover,
.page-contact .pc-chapters-list a:focus-visible,
.page-contact .pc-chapters-list a[aria-current="true"] {
  color: var(--ink-900);
  background: var(--cyan);
}

/* ---------- 双路径主区 ---------- */
.page-contact .pc-split {
  padding: clamp(34px, 5vw, 64px) 0 clamp(36px, 5.5vw, 72px);
  background: var(--ink-900);
}

.page-contact .pc-split-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-contact .pc-lane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border: var(--bw) solid var(--edge);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-contact .pc-lane-head {
  padding: clamp(18px, 2.4vw, 26px);
  border-bottom: var(--bw) solid var(--edge);
}

.page-contact .pc-lane--support .pc-lane-head {
  background: var(--band-teal);
}

.page-contact .pc-lane--partner .pc-lane-head {
  background: var(--band-wine);
}

.page-contact .pc-lane-code {
  display: inline-block;
  padding: 2px 9px 3px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
  border: 1px solid rgba(242, 180, 65, 0.55);
}

.page-contact .pc-lane-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 2.6vw, 28px);
  letter-spacing: -0.01em;
  color: #F4F6FF;
}

.page-contact .pc-lane-sub {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-mute);
}

.page-contact .pc-lane-body {
  display: flex;
  flex-direction: column;
  gap: var(--pc-block-gap);
  padding: clamp(18px, 2.6vw, 28px);
}

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

.page-contact .pc-block-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--edge);
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 21px);
  letter-spacing: -0.01em;
  color: #EEF1F8;
}

.page-contact .pc-block-title .index-num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-contact .pc-block-lede {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---------- 联系方式清单 ---------- */
.page-contact .pc-contact-dl {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--edge-soft);
  border: 1px solid var(--edge-soft);
}

.page-contact .pc-contact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 12px 14px;
  background: var(--ink-900);
}

.page-contact .pc-contact-row dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--index);
}

.page-contact .pc-contact-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-dark);
  word-break: break-word;
}

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

.page-contact .pc-step {
  position: relative;
  padding: 0 0 22px 22px;
  border-left: 2px solid var(--edge);
}

.page-contact .pc-step::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 3px;
  width: 14px;
  height: 14px;
  background: var(--ink-800);
  border: 2px solid var(--cyan);
}

.page-contact .pc-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .pc-step-num {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--index);
}

.page-contact .pc-step-body h4 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: #EEF1F8;
}

.page-contact .pc-step-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-mute);
}

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

.page-contact .pc-check {
  position: relative;
  padding: 10px 14px 10px 42px;
  background: var(--ink-900);
  border: 1px solid var(--edge-soft);
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--text-dark);
}

.page-contact .pc-check::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 50%;
  width: 14px;
  height: 14px;
  transform: translateY(-50%);
  background: var(--cyan);
  box-shadow: inset 0 0 0 3px var(--ink-900);
}

/* ---------- 合作卡片 ---------- */
.page-contact .pc-coop-list {
  display: grid;
  gap: 12px;
}

.page-contact .pc-coop-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--ink-900);
  border: 1px solid var(--edge);
  border-left: 4px solid var(--edge);
}

.page-contact .pc-coop-card:nth-child(1) {
  border-left-color: var(--cyan);
}

.page-contact .pc-coop-card:nth-child(2) {
  border-left-color: var(--gold);
}

.page-contact .pc-coop-card:nth-child(3) {
  border-left-color: var(--coral);
}

.page-contact .pc-coop-card .tag {
  align-self: flex-start;
}

.page-contact .pc-coop-card h4 {
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: #EEF1F8;
}

.page-contact .pc-coop-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---------- 注释与行内链接 ---------- */
.page-contact .pc-note {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--edge);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-mute);
}

.page-contact .pc-inline-link {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mute);
}

.page-contact .pc-inline-link a,
.page-contact .pc-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 208, 0.42);
}

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

/* ---------- 对接流程 ---------- */
.page-contact .pc-flow {
  padding-bottom: clamp(38px, 6vw, 76px);
  background: var(--ink-900);
}

.page-contact .pc-flow .chapter-band {
  margin-bottom: clamp(28px, 4.4vw, 52px);
}

.page-contact .pc-flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

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

.page-contact .pc-flow-node {
  position: relative;
  padding: 0 0 26px 56px;
  min-width: 0;
}

.page-contact .pc-flow-node::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 40px;
  bottom: 0;
  width: 2px;
  background: var(--edge);
}

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

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

.page-contact .pc-flow-num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-900);
  background: var(--gold);
  border: var(--bw) solid var(--ink-900);
  box-shadow: 3px 3px 0 rgba(242, 180, 65, 0.28);
}

.page-contact .pc-flow-node h3 {
  margin: 8px 0 6px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: #EEF1F8;
}

.page-contact .pc-flow-node p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-mute);
}

.page-contact .pc-flow-media {
  min-width: 0;
  border: var(--bw) solid var(--edge);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

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

/* ---------- 联系信息卡 ---------- */
.page-contact .pc-reach {
  position: relative;
  padding: 0 0 clamp(46px, 7vw, 92px);
  background: var(--ink-900);
}

.page-contact .pc-reach::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 108%, rgba(242, 180, 65, 0.12), transparent 58%);
}

.page-contact .pc-reach-card {
  position: relative;
  padding: clamp(22px, 3.6vw, 40px);
  background: var(--ink-800);
  border: var(--bw) solid var(--gold);
  box-shadow: var(--shadow-hard);
}

.page-contact .pc-reach-head {
  padding-bottom: clamp(16px, 2.4vw, 24px);
  border-bottom: 1px solid var(--edge);
}

.page-contact .pc-reach-code {
  display: inline-block;
  padding: 3px 9px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--gold);
  border: 1px solid rgba(242, 180, 65, 0.5);
}

.page-contact .pc-reach-head h2 {
  margin: 14px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.02em;
  color: #F4F6FF;
}

.page-contact .pc-reach-head p {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-mute);
}

.page-contact .pc-reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(18px, 2.6vw, 28px);
  background: var(--edge-soft);
  border: 1px solid var(--edge-soft);
}

.page-contact .pc-reach-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink-900);
  min-width: 0;
}

.page-contact .pc-reach-key {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--index);
}

.page-contact .pc-reach-val {
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: #EEF1F8;
  word-break: break-word;
}

.page-contact .pc-reach-desc {
  font-size: 13.5px;
  line-height: 1.62;
  color: var(--text-mute);
}

.page-contact .pc-reach-foot {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-mute);
}

.page-contact .pc-reach-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 208, 0.42);
}

.page-contact .pc-reach-foot a:hover,
.page-contact .pc-reach-foot a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 悬停增强 ---------- */
@media (hover: hover) {
  .page-contact .pc-coop-card {
    transition: border-color 0.2s ease, transform 0.2s ease;
  }

  .page-contact .pc-coop-card:hover {
    border-color: rgba(53, 230, 208, 0.55);
    transform: translate(-2px, -2px);
  }

  .page-contact .pc-flow-node:hover .pc-flow-num {
    background: var(--cyan);
    box-shadow: 3px 3px 0 rgba(53, 230, 208, 0.3);
  }
}

/* ---------- 窄屏到宽屏 ---------- */
@media (min-width: 560px) {
  .page-contact .pc-contact-row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }
}

@media (min-width: 700px) {
  .page-contact .pc-reach-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 5vw, 64px);
  }
}

@media (min-width: 980px) {
  .page-contact .pc-split-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 48px);
  }

  .page-contact .pc-flow-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 56px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-chapters-list a,
  .page-contact .pc-coop-card {
    transition: none;
  }

  .page-contact .pc-coop-card:hover {
    transform: none;
  }
}