/* ===== 联系与反馈 · 页面专属样式（作用域 .page-contact） ===== */

.page-contact {
  --pc-pad-block: clamp(56px, 8vw, 96px);
  --pc-gap: clamp(24px, 4vw, 48px);
  --pc-ink-soft: #3A4256;
  background: var(--hb-paper);
  color: var(--hb-ink);
  font-family: var(--hb-font-body);
  line-height: 1.85;
}

.page-contact a {
  color: var(--hb-blue-mid);
  text-decoration-color: var(--hb-gold-soft);
  text-underline-offset: 3px;
}

.page-contact :focus-visible {
  outline: 2px solid var(--hb-blue-mid);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--hb-header-h) + 44px);
  padding-bottom: clamp(56px, 9vw, 104px);
  background-color: var(--hb-paper);
  background-image:
    linear-gradient(var(--hb-hair-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--hb-hair-soft) 1px, transparent 1px);
  background-size: 88px 88px;
  background-position: -1px -1px;
}

.page-contact .pc-hero__shell {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.page-contact .pc-crumbs {
  margin-bottom: 20px;
  font-size: 13px;
  color: var(--hb-muted);
}

.page-contact .pc-crumbs__sep {
  margin: 0 8px;
  color: var(--hb-gold);
}

.page-contact .pc-hero__title {
  margin: 12px 0 20px;
  font-family: var(--hb-font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--hb-navy-deep);
}

.page-contact .pc-hero__lede {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(1rem, 2.6vw, 1.0625rem);
  line-height: 1.9;
  color: var(--pc-ink-soft);
}

.page-contact .pc-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--hb-gold-soft);
}

.page-contact .pc-hero__fact .hb-num {
  font-size: clamp(1.05rem, 2.8vw, 1.3rem);
  font-weight: 700;
}

.page-contact .pc-hero__factlabel {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--hb-muted);
}

.page-contact .pc-hero__art {
  position: relative;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 14 / 9;
  border-radius: var(--hb-r-lg) var(--hb-r-lg) var(--hb-r-lg) 72px;
  background: linear-gradient(150deg, var(--hb-navy) 0%, var(--hb-navy-deep) 100%);
  box-shadow: var(--hb-shadow-2);
}

.page-contact .pc-hero__art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(210deg, rgba(200, 154, 60, .20), transparent 58%);
  pointer-events: none;
}

.page-contact .pc-hero__art img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 联系渠道 ---------- */
.page-contact .pc-channels {
  padding-top: var(--pc-pad-block);
  padding-bottom: var(--pc-pad-block);
  background: var(--hb-card);
}

.page-contact .pc-channels__head,
.page-contact .pc-topics__head,
.page-contact .pc-checks__head {
  max-width: 660px;
  margin-bottom: clamp(32px, 5vw, 56px);
}

.page-contact .pc-channels__lede,
.page-contact .pc-topics__lede,
.page-contact .pc-checks__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--hb-muted);
}

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

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

.page-contact .pc-channel {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 26px 0;
  border-bottom: 1px solid var(--hb-hair);
}

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

.page-contact .pc-channel__idx {
  padding-top: 6px;
  font-size: 12px;
  color: var(--hb-gold);
}

.page-contact .pc-channel__label {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--hb-muted);
}

.page-contact .pc-channel__value {
  margin: 0;
  font-family: var(--hb-font-mono);
  font-weight: 700;
  font-size: clamp(1.28rem, 5.4vw, 1.85rem);
  line-height: 1.35;
  letter-spacing: .01em;
  color: var(--hb-navy-deep);
  word-break: break-word;
}

.page-contact .pc-channel__value--text {
  font-family: var(--hb-font-body);
  font-size: clamp(1rem, 3.6vw, 1.125rem);
  font-weight: 600;
  line-height: 1.75;
}

.page-contact .pc-channel__desc {
  max-width: 44ch;
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--hb-muted);
}

.page-contact .pc-channels__aside {
  display: grid;
  gap: 20px;
  align-content: start;
}

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

.page-contact .pc-channels__note {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 18px 20px;
  border-radius: var(--hb-r-md);
  background: var(--hb-blue-mist);
  color: var(--hb-navy-deep);
  font-size: 14px;
  line-height: 1.8;
}

.page-contact .pc-channels__note p {
  margin: 0;
}

.page-contact .pc-channels__note .hb-dot {
  margin-top: .62em;
  flex: 0 0 auto;
}

/* ---------- 问题分类 ---------- */
.page-contact .pc-topics {
  padding-top: var(--pc-pad-block);
  padding-bottom: var(--pc-pad-block);
  background: var(--hb-paper);
}

.page-contact .pc-topics__grid {
  display: grid;
  gap: 18px;
}

.page-contact .pc-topic {
  overflow: hidden;
  border: 1px solid var(--hb-hair);
  border-radius: var(--hb-r-md);
  background: var(--hb-card);
  box-shadow: var(--hb-shadow-1);
  transition: box-shadow var(--hb-dur) var(--hb-ease);
}

.page-contact .pc-topic:hover {
  box-shadow: var(--hb-shadow-2);
}

.page-contact .pc-topic__sum {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 20px 20px 20px 18px;
  cursor: pointer;
  list-style: none;
  border-left: 4px solid transparent;
  transition: border-color var(--hb-dur) var(--hb-ease), background-color var(--hb-dur) var(--hb-ease);
}

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

.page-contact .pc-topic__sum::marker {
  content: "";
}

.page-contact .pc-topic__sum:hover {
  border-left-color: var(--hb-gold);
  background: rgba(27, 58, 147, .03);
}

.page-contact .pc-topic[open] .pc-topic__sum {
  border-left-color: var(--hb-red);
}

.page-contact .pc-topic__idx {
  font-size: 12px;
  color: var(--hb-gold);
}

.page-contact .pc-topic__name {
  font-family: var(--hb-font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 3.4vw, 1.2rem);
  color: var(--hb-navy-deep);
}

.page-contact .pc-topic__cue {
  position: relative;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
}

.page-contact .pc-topic__cue::before,
.page-contact .pc-topic__cue::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--hb-gold);
  transform: translate(-50%, -50%);
  transition: transform var(--hb-dur) var(--hb-ease), opacity var(--hb-dur) var(--hb-ease);
}

.page-contact .pc-topic__cue::before {
  width: 14px;
  height: 2px;
}

.page-contact .pc-topic__cue::after {
  width: 2px;
  height: 14px;
}

.page-contact .pc-topic[open] .pc-topic__cue::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-contact .pc-topic__body {
  padding: 2px 20px 22px 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--hb-muted);
}

.page-contact .pc-topic__body > p {
  margin: 0;
}

.page-contact .pc-topic__list {
  display: grid;
  gap: 9px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-topic__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--hb-ink);
}

.page-contact .pc-topic__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--hb-gold-soft);
  border: 1px solid var(--hb-gold);
}

.page-contact .pc-topic__link {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: var(--hb-muted);
}

/* ---------- 提交前自查 ---------- */
.page-contact .pc-checks {
  padding-top: var(--pc-pad-block);
  padding-bottom: var(--pc-pad-block);
  background: var(--hb-card);
}

.page-contact .pc-checks__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hb-hair);
}

.page-contact .pc-check {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  padding: 28px 0;
  border-bottom: 1px solid var(--hb-hair);
}

.page-contact .pc-check__num {
  padding-top: 4px;
  font-size: clamp(1.5rem, 4.6vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--hb-gold);
}

.page-contact .pc-check__title {
  margin: 0 0 8px;
  font-family: var(--hb-font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 3.2vw, 1.18rem);
  line-height: 1.4;
  color: var(--hb-navy-deep);
}

.page-contact .pc-check__body p {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--hb-muted);
}

/* ---------- 通栏延伸入口 ---------- */
.page-contact .pc-band {
  padding: 32px 0;
  background: var(--hb-paper);
  border-top: 1px solid var(--hb-hair);
  border-bottom: 1px solid var(--hb-hair);
}

.page-contact .pc-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.page-contact .pc-band__title {
  margin: 0;
  font-family: var(--hb-font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--hb-navy-deep);
}

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

/* ---------- 属地与备案 ---------- */
.page-contact .pc-region {
  position: relative;
  padding-top: clamp(48px, 7vw, 88px);
  padding-bottom: clamp(48px, 7vw, 88px);
  background: linear-gradient(115deg, var(--hb-navy-deep) 0%, var(--hb-navy) 100%);
  color: #FFFFFF;
}

.page-contact .pc-region::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--hb-gold), transparent);
}

.page-contact .pc-region__inner {
  display: grid;
  gap: 32px;
}

.page-contact .pc-region__eyebrow {
  color: var(--hb-gold-soft);
}

.page-contact .pc-region__title {
  margin: 12px 0 14px;
  font-family: var(--hb-font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 4.6vw, 2.1rem);
  line-height: 1.28;
  color: #FFFFFF;
}

.page-contact .pc-region__desc {
  max-width: 50ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .76);
}

.page-contact .pc-region__meta {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .pc-region__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 20px;
  padding: 16px 20px;
  border: 1px solid var(--hb-hair-light);
  border-radius: var(--hb-r-sm);
  background: rgba(255, 255, 255, .05);
}

.page-contact .pc-region__key {
  font-size: 12px;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .62);
}

.page-contact .pc-region__val {
  font-size: 15px;
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .pc-topics__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 28px;
  }

  .page-contact .pc-topic:nth-child(even) {
    margin-top: 28px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero__shell {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }

  .page-contact .pc-channels__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--pc-gap);
    align-items: start;
  }

  .page-contact .pc-check {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 24px;
    padding: 32px 0;
  }

  .page-contact .pc-region__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: 64px;
  }
}

@media (max-width: 480px) {
  .page-contact .pc-hero__title br {
    display: none;
  }

  .page-contact .pc-channel {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }

  .page-contact .pc-channel__idx {
    padding-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-topic,
  .page-contact .pc-topic__sum,
  .page-contact .pc-topic__cue::before,
  .page-contact .pc-topic__cue::after {
    transition-duration: 1ms;
  }
}