.page-contact {
  --pc-line-focus: rgba(31, 224, 200, 0.55);
  --pc-whistle-line: rgba(245, 197, 66, 0.55);
  --pc-gap: 20px;
}

/* —— 首屏引言 —— */
.page-contact .pc-intro {
  max-width: 46rem;
  padding: 20px 0 4px;
}

.page-contact .pc-intro__title {
  margin: 14px 0 18px;
  text-wrap: balance;
}

.page-contact .pc-intro__lede {
  margin: 0;
  color: var(--yb-steel);
}

.page-contact a {
  color: var(--yb-signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 224, 200, 0.32);
}

.page-contact a:hover {
  border-bottom-color: var(--yb-signal);
}

.page-contact a:focus-visible {
  outline: 1px solid var(--yb-signal);
  outline-offset: 2px;
}

/* —— 信息塔：左 4 列渠道卡 + 右 8 列说明栏 —— */
.page-contact .pc-tower {
  padding-top: 48px;
}

.page-contact .pc-tower__head {
  margin: 0 0 22px;
}

.page-contact .pc-tower__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .pc-rail {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .pc-brief {
  display: grid;
  gap: 22px;
  min-width: 0;
}

/* —— 渠道卡片 —— */
.page-contact .pc-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
  background: var(--yb-room);
  border: 1px solid var(--yb-line);
  clip-path: var(--yb-cut-lt);
  transition: border-color 160ms var(--yb-ease), transform 160ms var(--yb-ease);
}

.page-contact .pc-channel:hover,
.page-contact .pc-channel:focus-within {
  border-color: var(--pc-line-focus);
  transform: translateY(-2px);
}

.page-contact .pc-channel--mail {
  border-color: var(--pc-whistle-line);
  background: linear-gradient(158deg, rgba(245, 197, 66, 0.1), rgba(16, 41, 76, 0.92) 58%);
}

.page-contact .pc-channel--mail::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72px;
  height: 1px;
  background: var(--yb-whistle);
}

.page-contact .pc-channel--phone {
  clip-path: var(--yb-cut-rb);
}

.page-contact .pc-channel--addr {
  clip-path: var(--yb-cut-lt);
  background: rgba(16, 41, 76, 0.55);
}

.page-contact .pc-channel__value {
  margin: 0;
  font-family: var(--yb-font-mono);
  font-size: clamp(0.9375rem, 1.5vw, 1.0625rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: var(--yb-paper);
  overflow-wrap: anywhere;
}

.page-contact .pc-channel__value--num {
  font-size: clamp(1.375rem, 3vw, 1.75rem);
  letter-spacing: 0.1em;
}

.page-contact .pc-channel__addr {
  font-style: normal;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--yb-paper);
}

.page-contact .pc-channel__meta {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--yb-mute);
}

.page-contact .pc-channel__act {
  margin-top: 4px;
}

.page-contact .pc-copy {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 14px;
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--yb-signal);
  background: transparent;
  border: 1px solid var(--yb-line);
  clip-path: var(--yb-cut-rb);
  cursor: pointer;
  transition: background-color 160ms var(--yb-ease), color 160ms var(--yb-ease), border-color 160ms var(--yb-ease);
}

.page-contact .pc-copy:hover {
  background: rgba(31, 224, 200, 0.12);
  border-color: var(--pc-line-focus);
}

.page-contact .pc-copy:focus-visible {
  outline: 1px solid var(--yb-signal);
  outline-offset: 2px;
}

.page-contact .pc-copy[data-copied="true"] {
  background: var(--yb-signal);
  border-color: var(--yb-signal);
  color: var(--yb-ink);
}

/* —— 说明栏 —— */
.page-contact .pc-brief__media {
  margin: 0;
  border: 1px solid var(--yb-line);
  clip-path: var(--yb-cut-lt);
  overflow: hidden;
}

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

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

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

.page-contact .pc-route__item {
  position: relative;
  padding: 12px 16px 12px 32px;
  border-left: 1px solid var(--yb-line);
  background: linear-gradient(90deg, rgba(16, 41, 76, 0.72), rgba(16, 41, 76, 0) 82%);
}

.page-contact .pc-route__item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 24px;
  width: 13px;
  height: 1px;
  background: var(--yb-signal);
  transform: rotate(-18deg);
}

.page-contact .pc-route__key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--yb-font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--yb-signal);
}

.page-contact .pc-route__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--yb-steel);
}

/* —— 咨询准备 —— */
.page-contact .pc-prep {
  padding-top: 88px;
}

.page-contact .pc-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-contact .pc-prep__lede p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--yb-steel);
}

.page-contact .pc-prep__lede .yb-h2 {
  margin: 12px 0 18px;
}

.page-contact .pc-format {
  padding: 22px 20px;
  background: var(--yb-room);
  border: 1px solid var(--yb-line);
  clip-path: var(--yb-cut-rb);
}

.page-contact .pc-format__code {
  margin: 12px 0 6px;
  font-family: var(--yb-font-mono);
  font-size: 0.9375rem;
  letter-spacing: 0.06em;
  color: var(--yb-signal);
  overflow-wrap: anywhere;
}

.page-contact .pc-format__sample {
  margin: 0 0 16px;
  font-family: var(--yb-font-mono);
  font-size: clamp(1.125rem, 2.4vw, 1.5rem);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--yb-paper);
  overflow-wrap: anywhere;
}

.page-contact .pc-format__note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--yb-line-faint);
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--yb-mute);
}

.page-contact .pc-steps {
  counter-reset: pc-step;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .pc-steps li {
  counter-increment: pc-step;
  position: relative;
  padding-left: 40px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--yb-steel);
}

.page-contact .pc-steps li::before {
  content: counter(pc-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--yb-font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--yb-signal);
  border-bottom: 1px solid rgba(31, 224, 200, 0.42);
}

.page-contact .pc-prep__miss {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--yb-red);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--yb-steel);
}

/* —— 纠错与供稿 —— */
.page-contact .pc-coop__head {
  max-width: 42rem;
  margin-bottom: 32px;
}

.page-contact .pc-coop__head p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--yb-steel);
}

.page-contact .pc-coop__head .yb-h2 {
  margin: 12px 0 16px;
}

.page-contact .pc-coop__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .pc-coop__item {
  padding: 24px 22px;
  border: 1px solid var(--yb-line);
  background: var(--yb-room);
}

.page-contact .pc-coop__item--a {
  clip-path: var(--yb-cut-lt);
}

.page-contact .pc-coop__item--b {
  clip-path: var(--yb-cut-rb);
  background: rgba(16, 41, 76, 0.55);
}

.page-contact .pc-coop__item .yb-h3 {
  margin: 0 0 12px;
}

.page-contact .pc-coop__item p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--yb-steel);
}

.page-contact .pc-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .pc-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--yb-steel);
}

.page-contact .pc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 10px;
  height: 1px;
  background: var(--yb-red);
  transform: rotate(-18deg);
}

.page-contact .pc-coop__note {
  margin: 16px 0 0 !important;
  padding-top: 14px;
  border-top: 1px solid var(--yb-line-faint);
  font-size: 0.8125rem !important;
  line-height: 1.8 !important;
  color: var(--yb-mute) !important;
}

/* —— 地址说明 —— */
.page-contact .pc-visit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.page-contact .pc-visit__text .yb-h2 {
  margin: 12px 0 18px;
}

.page-contact .pc-visit__text p {
  margin: 0 0 16px;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--yb-steel);
}

.page-contact .pc-visit__media {
  margin: 0;
  border: 1px solid var(--yb-line);
  clip-path: var(--yb-cut-rb);
  overflow: hidden;
}

/* —— 常见咨询 —— */
.page-contact .pc-faq__title {
  margin: 0 0 24px;
}

.page-contact .pc-faq__list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--yb-line-faint);
}

.page-contact .pc-faq__item {
  border-bottom: 1px solid var(--yb-line-faint);
}

.page-contact .pc-faq__item summary {
  position: relative;
  display: block;
  padding: 18px 48px 18px 16px;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--yb-paper);
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--yb-ease);
}

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

.page-contact .pc-faq__item summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 12px;
  height: 1px;
  background: var(--yb-signal);
  transform: rotate(-18deg);
}

.page-contact .pc-faq__item summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--yb-font-mono);
  font-size: 1.125rem;
  color: var(--yb-signal);
  transition: transform 160ms var(--yb-ease);
}

.page-contact .pc-faq__item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.page-contact .pc-faq__item summary:hover {
  color: var(--yb-signal);
}

.page-contact .pc-faq__item summary:focus-visible {
  outline: 1px solid var(--yb-signal);
  outline-offset: -1px;
}

.page-contact .pc-faq__item p {
  margin: 0;
  padding: 0 48px 20px 29px;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--yb-steel);
}

/* —— 备案信息带 —— */
.page-contact .pc-base {
  margin-top: 56px;
  padding: 26px 0 76px;
  border-top: 1px solid var(--yb-line);
}

.page-contact .pc-base__row {
  display: grid;
  gap: 12px;
}

.page-contact .pc-base__icp {
  margin: 0;
  font-family: var(--yb-font-mono);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.16em;
  color: var(--yb-steel);
}

.page-contact .pc-base__region {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--yb-mute);
}

.page-contact .pc-base__law {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--yb-mute);
}

.page-contact .pc-base__law a {
  color: var(--yb-steel);
  border-bottom-color: var(--yb-line);
}

.page-contact .pc-base__law a:hover {
  color: var(--yb-signal);
  border-bottom-color: var(--yb-signal);
}

/* —— 响应式 —— */
@media (min-width: 768px) {
  .page-contact .pc-base__row {
    grid-template-columns: auto auto minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
  }
}

@media (min-width: 992px) {
  .page-contact .pc-tower__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 32px;
  }

  .page-contact .pc-prep__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
  }

  .page-contact .pc-coop__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
  }

  .page-contact .pc-coop__item--b {
    margin-top: 64px;
  }

  .page-contact .pc-visit__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }
}

@media (min-width: 1200px) {
  .page-contact .pc-tower__grid {
    gap: 40px;
  }

  .page-contact .pc-channel {
    padding: 26px 24px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-channel,
  .page-contact .pc-copy,
  .page-contact .pc-faq__item summary,
  .page-contact .pc-faq__item summary::after {
    transition: none;
  }

  .page-contact .pc-channel:hover,
  .page-contact .pc-channel:focus-within {
    transform: none;
  }
}