.page-contact {
  --pc-panel: #1D232B;
  --pc-panel-2: #252C35;
  --pc-gap: clamp(20px, 3vw, 34px);
  background: var(--yw-graphite);
  color: var(--yw-paper);
  overflow-x: clip;
}

.page-contact .pc-crumbRow {
  padding-top: clamp(96px, 12vw, 136px);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding-bottom: clamp(44px, 6vw, 76px);
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  top: -14%;
  right: -22%;
  width: min(70vw, 760px);
  aspect-ratio: 1 / 1;
  background: radial-gradient(closest-side, rgba(46, 155, 255, 0.16), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .pc-hero__in {
  position: relative;
  z-index: 1;
}

.page-contact .pc-hero__h1 {
  margin: 16px 0 0;
  font-family: var(--yw-font-sans);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 74px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 16em;
}

.page-contact .pc-hero__h1 em {
  font-style: normal;
  color: var(--yw-signal);
}

.page-contact .pc-hero__lead {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.78;
  color: #D6DCE3;
}

/* 首屏快速联系条 */
.page-contact .pc-quick {
  display: grid;
  gap: 1px;
  margin-top: clamp(30px, 4.2vw, 52px);
  background: var(--yw-line);
  border: 1px solid var(--yw-line);
  border-radius: var(--yw-radius);
}

.page-contact .pc-quick__cell {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--pc-panel);
}

.page-contact .pc-quick__lab {
  font-family: var(--yw-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yw-muted);
}

.page-contact .pc-quick__val {
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--yw-paper);
}

.page-contact .pc-quick__val.yw-mono {
  font-size: clamp(20px, 2.6vw, 30px);
  letter-spacing: 0.01em;
  color: var(--yw-signal);
  overflow-wrap: anywhere;
}

.page-contact .pc-quick__val.yw-mono.pc-quick__val--mail {
  font-size: clamp(14.5px, 1.8vw, 20px);
  color: var(--yw-electric);
}

.page-contact .pc-quick__hint {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--yw-muted);
}

/* ---------- 章节通用题头 ---------- */
.page-contact .pc-head {
  display: grid;
  gap: clamp(14px, 2vw, 26px);
  align-items: start;
}

.page-contact .pc-head--tight {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-contact .pc-no {
  display: block;
  font-family: var(--yw-font-mono);
  font-size: clamp(54px, 9vw, 116px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--yw-line);
}

.page-contact .pc-head__body .yw-h2 {
  margin: 0;
}

.page-contact .pc-head__sub {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--yw-muted);
}

/* ---------- 联系方式总览 ---------- */
.page-contact .pc-reach__grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(26px, 3.6vw, 44px);
}

.page-contact .pc-reach__cards {
  display: grid;
  gap: 1px;
  background: var(--yw-line);
  border: 1px solid var(--yw-line);
  border-radius: var(--yw-radius);
}

.page-contact .pc-reach__card {
  display: grid;
  gap: 9px;
  align-content: start;
  padding: clamp(20px, 2.5vw, 30px);
  background: var(--pc-panel);
  border-left: 3px solid var(--yw-electric);
}

.page-contact .pc-reach__card:first-child {
  border-left-color: var(--yw-signal);
}

.page-contact .pc-reach__k {
  margin: 0;
  font-family: var(--yw-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yw-muted);
}

.page-contact .pc-reach__v {
  margin: 0;
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--yw-paper);
}

.page-contact .pc-reach__v.yw-mono {
  color: var(--yw-signal);
  overflow-wrap: anywhere;
}

.page-contact .pc-reach__v.yw-mono.pc-reach__v--mail {
  font-size: clamp(14.5px, 1.7vw, 18px);
  color: var(--yw-electric);
}

.page-contact .pc-reach__d {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #C6CDD5;
}

.page-contact .pc-reach__t {
  margin: 0;
  padding-top: 9px;
  border-top: 1px dashed var(--yw-line);
  font-family: var(--yw-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--yw-muted);
}

.page-contact .pc-reach__fig {
  margin: 0;
}

.page-contact .pc-reach__fig img,
.page-contact .pc-flow__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 四项信息 ---------- */
.page-contact .pc-prep__list {
  list-style: none;
  margin: clamp(26px, 3.6vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--yw-line);
  border: 1px solid var(--yw-line);
  border-radius: var(--yw-radius);
}

.page-contact .pc-prep__item {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(22px, 2.8vw, 34px);
  background: var(--pc-panel);
  position: relative;
}

.page-contact .pc-prep__item:nth-child(odd) {
  background: var(--pc-panel-2);
}

.page-contact .pc-prep__idx {
  font-family: var(--yw-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yw-signal);
}

.page-contact .pc-prep__t {
  margin: 0;
  font-family: var(--yw-font-sans);
  font-weight: 800;
  font-size: clamp(19px, 2.1vw, 24px);
  letter-spacing: -0.01em;
  color: var(--yw-paper);
}

.page-contact .pc-prep__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #C6CDD5;
}

/* ---------- 流程 ---------- */
.page-contact .pc-flow__grid {
  display: grid;
  gap: var(--pc-gap);
  align-items: start;
}

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

.page-contact .pc-steps::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 12px;
  bottom: 22px;
  width: 2px;
  background: linear-gradient(to bottom, var(--yw-signal), var(--yw-electric));
  opacity: 0.55;
}

.page-contact .pc-step {
  position: relative;
  padding-left: 46px;
  padding-bottom: clamp(22px, 3vw, 34px);
}

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

.page-contact .pc-step__dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  background: var(--yw-graphite);
  border: 1px solid var(--yw-signal);
  border-radius: 50%;
  font-family: var(--yw-font-mono);
  font-size: 11px;
  color: var(--yw-signal);
}

.page-contact .pc-step__t {
  margin: 0 0 8px;
  font-family: var(--yw-font-sans);
  font-weight: 800;
  font-size: clamp(17px, 1.9vw, 21px);
  letter-spacing: -0.01em;
  color: var(--yw-paper);
}

.page-contact .pc-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #C6CDD5;
}

.page-contact .pc-flow__fig {
  margin: 0;
}

/* ---------- 补充说明（纸感分区） ---------- */
.page-contact .pc-more {
  background: var(--yw-paper);
  color: var(--yw-ink);
  padding: clamp(48px, 7vw, 96px) 0;
  margin-top: clamp(40px, 6vw, 80px);
}

.page-contact .pc-more__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
}

.page-contact .pc-more__k {
  display: block;
  font-family: var(--yw-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yw-signal-deep);
}

.page-contact .pc-more__h2 {
  margin: 14px 0 0;
  color: var(--yw-ink);
}

.page-contact .pc-more__intro p {
  margin: 16px 0 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yw-paper-muted);
}

.page-contact .pc-more__list {
  display: grid;
  gap: 1px;
  background: var(--yw-paper-line);
  border-top: 1px solid var(--yw-paper-line);
}

.page-contact .pc-more__item {
  background: var(--yw-paper);
  padding: clamp(18px, 2.4vw, 26px) 0;
  border-bottom: 1px solid var(--yw-paper-line);
}

.page-contact .pc-more__q {
  margin: 0 0 8px;
  font-family: var(--yw-font-sans);
  font-weight: 800;
  font-size: clamp(16.5px, 1.8vw, 19px);
  letter-spacing: -0.01em;
  color: var(--yw-ink);
}

.page-contact .pc-more__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: #3D3A34;
}

/* ---------- 来函地址与备案 ---------- */
.page-contact .pc-post__grid {
  display: grid;
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .pc-post__k {
  display: block;
  font-family: var(--yw-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--yw-muted);
}

.page-contact .pc-post__h2 {
  margin: 14px 0 0;
}

.page-contact .pc-post__body p {
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
  color: #C6CDD5;
}

.page-contact .pc-post__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-contact .pc-post__links a {
  font-size: 14.5px;
  color: var(--yw-electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 155, 255, 0.45);
  padding-bottom: 2px;
}

.page-contact .pc-post__links a:hover,
.page-contact .pc-post__links a:focus-visible {
  color: var(--yw-signal);
  border-bottom-color: var(--yw-signal);
}

.page-contact .pc-post__list {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--yw-line);
  border: 1px solid var(--yw-line);
  border-radius: var(--yw-radius);
}

.page-contact .pc-post__row {
  display: grid;
  gap: 6px;
  padding: clamp(16px, 2.1vw, 22px) clamp(18px, 2.4vw, 26px);
  background: var(--pc-panel);
}

.page-contact .pc-post__row dt {
  font-family: var(--yw-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--yw-muted);
}

.page-contact .pc-post__row dd {
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--yw-paper);
  overflow-wrap: anywhere;
}

.page-contact .pc-post__row dd.yw-mono {
  color: var(--yw-electric);
}

.page-contact .pc-post__row dd.yw-mono.pc-post__mail {
  font-size: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .pc-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-contact .pc-head {
    grid-template-columns: minmax(0, 130px) minmax(0, 1fr);
  }

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

@media (min-width: 900px) {
  .page-contact .pc-reach__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-contact .pc-flow__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-contact .pc-flow__fig {
    position: sticky;
    top: 120px;
  }

  .page-contact .pc-more__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  }

  .page-contact .pc-post__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .page-contact .pc-head {
    grid-template-columns: minmax(0, 170px) minmax(0, 1fr);
  }
}

@media (min-width: 1100px) {
  .page-contact .pc-reach__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-reach__card,
  .page-contact .pc-flow__fig {
    transition: none;
  }
}
</main>