.page-contact {
  --pc-panel: rgba(46, 46, 46, .62);
  position: relative;
  padding-bottom: clamp(48px, 8vw, 110px);
  background:
    radial-gradient(120% 58% at 90% 2%, rgba(255, 90, 31, .14), transparent 62%),
    radial-gradient(90% 46% at 4% 94%, rgba(0, 224, 198, .09), transparent 64%);
}

.page-contact .section {
  padding: clamp(38px, 6.5vw, 78px) 0 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(18px, 4vw, 34px) var(--pad-x) 0;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--scan);
}

.page-contact .breadcrumb a {
  color: var(--body-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

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

.page-contact .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 通用文字 ---------- */
.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--fox);
}

.page-contact .lede {
  font-family: var(--font-body);
  font-size: clamp(14.5px, 1.9vw, 17px);
  line-height: 1.78;
  color: var(--body-soft);
  max-width: 46ch;
  margin: 0;
}

.page-contact .section__head {
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .section__head h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.08;
  letter-spacing: .012em;
  color: var(--cream);
  margin: 8px 0 12px;
}

/* ---------- 首屏拼贴 ---------- */
.page-contact .hero-board {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .hero-board__main {
  position: relative;
  padding-top: clamp(14px, 3vw, 26px);
}

.page-contact .hero-board__main::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 84px;
  height: 3px;
  background: linear-gradient(90deg, var(--fox), var(--cyan));
}

.page-contact h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 10vw, 78px);
  font-weight: 700;
  line-height: .98;
  letter-spacing: .015em;
  color: var(--cream);
  margin: 12px 0 18px;
}

.page-contact h1 .h1__accent {
  display: block;
  font-size: .5em;
  letter-spacing: .1em;
  color: var(--fox);
  margin-top: 8px;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .hero-board__side {
  display: grid;
  gap: 14px;
  align-content: end;
}

.page-contact .hero-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .hero-stats > li {
  background: var(--ink-deep);
  padding: 14px 16px;
  display: grid;
  gap: 5px;
}

.page-contact .hero-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.9vw, 18px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-contact .hero-stats__lbl {
  font-size: 12px;
  line-height: 1.55;
  color: var(--scan);
}

/* ---------- 媒体框 ---------- */
.page-contact .media-frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-deep);
  -webkit-clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(1.06) contrast(1.04);
}

/* ---------- 客服通道 ---------- */
.page-contact .channel-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(160deg, var(--steel-hi), var(--steel) 64%);
  border: 1px solid var(--line);
  -webkit-clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  transition: border-color .35s var(--ease), background .35s var(--ease), transform .35s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 3px;
  background: var(--fox);
  transition: width .35s var(--ease), background .35s var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(0, 224, 198, .55);
}

.page-contact .channel-card:hover::before,
.page-contact .channel-card:focus-within::before {
  width: 132px;
  background: var(--cyan);
}

.page-contact .channel-card--hours {
  background: linear-gradient(160deg, rgba(0, 224, 198, .12), var(--steel) 72%);
}

.page-contact .channel-card__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--scan);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.4vw, 26px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--cream);
  word-break: break-all;
}

.page-contact .channel-card__value--sm {
  font-size: clamp(14px, 2.4vw, 19px);
}

.page-contact .channel-card__note {
  margin: 0 0 auto;
  font-size: 14px;
  line-height: 1.72;
  color: var(--body-soft);
}

.page-contact .copy-chip {
  align-self: flex-start;
  margin-top: 8px;
}

/* ---------- 沟通分类 ---------- */
.page-contact .topic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .topic-visual {
  min-height: 180px;
}

.page-contact .topic-card {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink-deep);
  border: 1px solid var(--line);
  border-left: 3px solid var(--fox);
  transition: transform .3s var(--ease), background .3s var(--ease), border-left-color .3s var(--ease);
}

.page-contact .topic-card--login {
  border-left-color: var(--cyan);
}

.page-contact .topic-card--partner {
  border-left-color: var(--fox-soft);
}

.page-contact .topic-card:hover {
  transform: translateX(5px);
  background: var(--steel);
  border-left-color: var(--cyan);
}

.page-contact .topic-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--scan);
}

.page-contact .topic-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.22;
  color: var(--cream);
}

.page-contact .topic-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--body-soft);
}

.page-contact .topic-card .tag {
  justify-self: start;
  margin-top: 4px;
}

/* ---------- 响应节奏 ---------- */
.page-contact .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--line);
}

.page-contact .timeline__item {
  display: grid;
  gap: 6px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .timeline__time {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--fox);
}

.page-contact .timeline__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.25;
  color: var(--cream);
}

.page-contact .timeline__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--body-soft);
}

/* ---------- 合作意向折叠 ---------- */
.page-contact .fold-stack {
  display: grid;
  gap: 10px;
}

.page-contact .fold {
  background: var(--ink-deep);
  border: 1px solid var(--line);
  transition: border-color .3s var(--ease);
}

.page-contact .fold:hover {
  border-color: var(--steel-hi);
}

.page-contact .fold__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  text-align: left;
  padding: clamp(15px, 2vw, 21px) clamp(16px, 2.4vw, 26px);
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: clamp(15px, 1.9vw, 17px);
  font-weight: 600;
  color: var(--cream);
  transition: background .25s var(--ease), color .25s var(--ease);
}

.page-contact .fold__trigger::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--fox);
  transition: color .25s var(--ease);
}

.page-contact .fold__trigger[aria-expanded="true"]::after {
  content: "–";
  color: var(--cyan);
}

.page-contact .fold__trigger:hover,
.page-contact .fold__trigger:focus-visible {
  background: var(--steel);
}

.page-contact .fold__panel {
  padding: 0 clamp(16px, 2.4vw, 26px) clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
}

.page-contact .fold__panel p {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--body-soft);
}

.page-contact .fold__panel ul {
  margin: 14px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 7px;
}

.page-contact .fold__panel li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-soft);
}

.page-contact .fold__panel li::marker {
  color: var(--fox);
}

/* ---------- 地址与备案 ---------- */
.page-contact .address-board {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  padding: clamp(22px, 3.4vw, 42px);
  background: var(--ink-deep);
  border: 1px solid var(--line);
}

.page-contact .address-board::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 220px;
  height: 220px;
  border: 1px solid var(--line);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-contact .address-board__head h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.1;
  color: var(--cream);
}

.page-contact .address-list {
  margin: 0;
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
}

.page-contact .address-list__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .address-list dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--scan);
}

.page-contact .address-list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
  word-break: break-all;
}

/* ---------- 留言准备 ---------- */
.page-contact .prepare-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.page-contact .prepare-board__head h2 {
  margin: 8px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.2vw, 38px);
  line-height: 1.08;
  color: var(--cream);
}

.page-contact .prepare-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .prepare-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .prepare-list li:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .prepare-list__k {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  padding-top: 3px;
  color: var(--fox);
}

.page-contact .prepare-list strong {
  grid-column: 2;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--cream);
}

.page-contact .prepare-list__d {
  grid-column: 2;
  font-size: 14px;
  line-height: 1.72;
  color: var(--body-soft);
}

.page-contact .follow-strip {
  margin-top: clamp(24px, 3.4vw, 40px);
  padding: clamp(18px, 2.6vw, 26px);
  display: grid;
  gap: 16px;
  background: linear-gradient(120deg, rgba(255, 90, 31, .12), rgba(0, 224, 198, .07) 70%, transparent);
  border: 1px solid var(--line);
  border-left: 3px solid var(--fox);
}

.page-contact .follow-strip p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--body-soft);
  max-width: 62ch;
}

.page-contact .follow-strip__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .address-list__row {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 820px) {
  .page-contact .timeline__item {
    grid-template-columns: 190px minmax(0, 1fr);
    column-gap: 28px;
    align-items: start;
  }

  .page-contact .timeline__time {
    grid-column: 1;
    grid-row: 1 / span 2;
  }

  .page-contact .timeline__item h3,
  .page-contact .timeline__item p {
    grid-column: 2;
  }

  .page-contact .channel-board {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .channel-card--mail {
    grid-row: span 2;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-board {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr);
    gap: clamp(24px, 3.4vw, 52px);
    align-items: end;
  }

  .page-contact .topic-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
    grid-template-rows: repeat(3, auto);
    align-items: stretch;
  }

  .page-contact .topic-visual {
    grid-column: 1;
    grid-row: 1 / -1;
    height: 100%;
    min-height: 320px;
  }

  .page-contact .topic-visual img {
    height: 100%;
    object-fit: cover;
  }

  .page-contact .topic-card {
    grid-column: 2;
  }

  .page-contact .address-board {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: clamp(26px, 4vw, 58px);
    align-items: start;
  }

  .page-contact .prepare-board {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: clamp(26px, 4vw, 58px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .topic-card,
  .page-contact .channel-card::before,
  .page-contact .fold__trigger {
    transition: none;
  }

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