.page-contact {
  --pc-soft: rgba(242, 246, 250, .74);
  --pc-hair: rgba(143, 168, 155, .22);
  position: relative;
  overflow-x: clip;
  background-color: var(--ink-900);
  background-image:
    radial-gradient(760px 460px at 88% -6%, rgba(59, 231, 210, .12), transparent 64%),
    radial-gradient(620px 420px at -4% 34%, rgba(255, 122, 47, .07), transparent 62%);
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-fine) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-fine) 1px, transparent 1px);
  background-size: 84px 84px;
}

.page-contact > .yb-section {
  position: relative;
  z-index: 1;
}

/* 面包屑 */
.page-contact .yb-crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .pc-hero__lead .yb-eyebrow {
  margin: 0 0 14px;
}

.page-contact .pc-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .pc-hero__hours {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--dim);
  max-width: 52ch;
}

.page-contact .pc-hero__hours .yb-mono {
  color: var(--moss);
  letter-spacing: .1em;
}

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

.page-contact .pc-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.85);
}

.page-contact .pc-hero__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--dim);
}

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

/* ---------- 通用章节头 ---------- */
.page-contact .pc-head {
  max-width: 70ch;
  margin-bottom: clamp(24px, 3.4vw, 44px);
  padding-top: 20px;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-head .yb-eyebrow {
  margin: 0 0 12px;
}

.page-contact .pc-head .yb-h2 {
  margin: 0;
}

.page-contact .pc-head__note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--pc-soft);
}

/* ---------- 问题归类切换 ---------- */
.page-contact .ctp {
  position: relative;
  display: grid;
  gap: var(--gap);
}

.page-contact .ctp__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ctp__tabs {
  display: grid;
  gap: 2px;
  align-content: start;
}

.page-contact .ctp__tab {
  display: grid;
  gap: 5px;
  padding: 16px 18px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-contact .ctp__tab:hover {
  border-color: var(--line-strong);
}

.page-contact .ctp__num {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--moss);
}

.page-contact .ctp__name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-contact .ctp__hint {
  font-size: 13px;
  line-height: 1.55;
  color: var(--dim);
}

.page-contact #pc-topic-1:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-1"],
.page-contact #pc-topic-2:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-2"],
.page-contact #pc-topic-3:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-3"],
.page-contact #pc-topic-4:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-4"] {
  border-color: var(--pulse);
  background: rgba(59, 231, 210, .06);
  box-shadow: inset 2px 0 0 var(--pulse);
}

.page-contact #pc-topic-1:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-1"] .ctp__num,
.page-contact #pc-topic-2:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-2"] .ctp__num,
.page-contact #pc-topic-3:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-3"] .ctp__num,
.page-contact #pc-topic-4:checked ~ .ctp__tabs .ctp__tab[for="pc-topic-4"] .ctp__num {
  color: var(--pulse);
}

.page-contact .ctp__panes {
  min-height: 300px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--ink-900);
  border: 1px solid var(--line);
}

.page-contact .ctp__pane {
  display: none;
  animation: pc-pane-in .28s var(--ease) both;
}

.page-contact #pc-topic-1:checked ~ .ctp__panes .ctp__pane--1,
.page-contact #pc-topic-2:checked ~ .ctp__panes .ctp__pane--2,
.page-contact #pc-topic-3:checked ~ .ctp__panes .ctp__pane--3,
.page-contact #pc-topic-4:checked ~ .ctp__panes .ctp__pane--4 {
  display: block;
}

@keyframes pc-pane-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-contact .ctp__pane .yb-h3 {
  margin: 0;
}

.page-contact .ctp__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--pc-soft);
  max-width: 58ch;
}

.page-contact .pc-dots {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .pc-dots li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--pc-soft);
}

.page-contact .pc-dots li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  background: var(--pulse);
}

.page-contact .pc-link {
  display: inline-block;
  margin-top: 20px;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 231, 210, .42);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .pc-link:hover,
.page-contact .pc-link:focus-visible {
  color: var(--flare);
  border-bottom-color: rgba(255, 122, 47, .6);
}

@media (min-width: 900px) {
  .page-contact .ctp {
    grid-template-columns: minmax(240px, 4fr) minmax(0, 8fr);
    align-items: start;
  }
}

/* ---------- 联系方式 ---------- */
.page-contact .pc-chan__grid {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
}

.page-contact .pc-line {
  padding: 20px 0;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-line:first-child {
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-line__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--moss);
}

.page-contact .pc-line__val {
  display: block;
  margin-top: 10px;
  padding: 0;
  background: none;
  border: 0;
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.9vw, 31px);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--paper);
  text-align: left;
  word-break: break-all;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.page-contact .pc-line__val:hover,
.page-contact .pc-line__val:focus-visible {
  color: var(--pulse);
}

.page-contact .pc-line__val--static {
  cursor: default;
}

.page-contact .pc-line__val--static:hover {
  color: var(--paper);
}

.page-contact .pc-line__cue {
  display: inline-block;
  margin-left: 12px;
  vertical-align: middle;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--dim);
}

.page-contact .pc-copy {
  display: block;
  min-height: 18px;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--flare);
}

.page-contact .pc-chan__tip {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--pc-soft);
  max-width: 52ch;
}

.page-contact .pc-addr {
  margin: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-addr__row {
  display: grid;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-addr dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--moss);
}

.page-contact .pc-addr dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--pc-soft);
}

@media (min-width: 560px) {
  .page-contact .pc-addr__row {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

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

/* ---------- 描述要点 ---------- */
.page-contact .pc-brief__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-contact .pc-factors {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-factor {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-factor__num {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--pulse);
  padding-top: 5px;
}

.page-contact .pc-factor .yb-h3 {
  margin: 0;
}

.page-contact .pc-factor p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--pc-soft);
  max-width: 54ch;
}

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

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

.page-contact .pc-brief__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--dim);
}

@media (min-width: 640px) {
  .page-contact .pc-factor {
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 24px;
  }
}

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

/* ---------- 合作与引用 ---------- */
.page-contact .pc-coop__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .pc-coop__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .pc-coop__item {
  padding: 18px 20px;
  background: var(--ink-800);
  border-left: 2px solid var(--line-strong);
  transition: border-left-color .18s var(--ease);
}

.page-contact .pc-coop__item:hover {
  border-left-color: var(--pulse);
}

.page-contact .pc-coop__name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-contact .pc-coop__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--pc-soft);
  max-width: 56ch;
}

.page-contact .pc-coop__note {
  padding: clamp(20px, 3vw, 26px);
  background: var(--ink-800);
  border-top: 1px solid var(--pulse);
}

.page-contact .pc-coop__note-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--pulse);
}

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

/* ---------- 自助入口 ---------- */
.page-contact .pc-more__grid {
  display: grid;
  gap: 2px;
  margin-top: 18px;
}

.page-contact .pc-more__item {
  display: block;
  padding: 22px;
  background: var(--ink-800);
  color: var(--paper);
  text-decoration: none;
  transition: background-color .18s var(--ease);
}

.page-contact .pc-more__item:hover,
.page-contact .pc-more__item:focus-visible {
  background: var(--ink-700);
}

.page-contact .pc-more__name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--pulse);
}

.page-contact .pc-more__desc {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--pc-soft);
}

@media (min-width: 760px) {
  .page-contact .pc-more__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ctp__pane,
  .page-contact .ctp__tab,
  .page-contact .pc-line__val,
  .page-contact .pc-link,
  .page-contact .pc-more__item,
  .page-contact .pc-coop__item {
    animation: none;
    transition: none;
  }
}