/* ===== 联系与反馈 · page-contact ===== */

.page-contact {
  --contact-hair: rgba(242, 236, 224, .14);
  --contact-paper-ink: #33424e;
  padding-bottom: 88px;
  background: var(--deep-sea);
  color: var(--cream);
  overflow-x: hidden;
}

.page-contact .contact-hero {
  padding-top: 24px;
}

.page-contact .contact-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  margin-top: 24px;
}

.page-contact .contact-hero-copy .lede {
  max-width: 48ch;
}

.page-contact .contact-lines {
  border-left: 3px solid var(--coral);
  padding-left: 20px;
}

.page-contact .lines-cap {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--rock);
}

.page-contact .line-value {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.4vw, 26px);
  line-height: 1.34;
  color: var(--cream);
  overflow-wrap: anywhere;
  letter-spacing: -.01em;
}

.page-contact .lines-note {
  margin: 0 0 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--rock);
  max-width: 36ch;
}

.page-contact .lines-rule {
  display: block;
  height: 1px;
  background: var(--contact-hair);
  margin: 0 0 22px;
}

.page-contact .contact-route {
  display: block;
  width: 100%;
  max-width: 260px;
  height: auto;
  margin-top: 22px;
}

.page-contact .contact-route path {
  fill: none;
  stroke: var(--amber);
  stroke-width: 1.5;
  stroke-dasharray: 5 7;
  opacity: .72;
}

.page-contact .contact-route circle {
  fill: var(--coral);
  stroke: none;
}

/* ---- 渠道卡 ---- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 20px;
  background: var(--night-blue);
  border: 1px solid var(--deck-blue);
  border-radius: var(--radius);
  transition: transform .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
}

.page-contact .channel-card:hover {
  transform: translateY(-4px);
  border-color: var(--amber);
  box-shadow: var(--shadow-lift);
}

.page-contact .channel-tag {
  margin: 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--amber);
}

.page-contact .channel-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--cream);
  letter-spacing: -.01em;
}

.page-contact .channel-addr {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--coral);
  overflow-wrap: anywhere;
}

.page-contact .channel-card-address .channel-addr {
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 15px;
}

.page-contact .channel-use {
  flex: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .channel-foot {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--contact-hair);
  font-size: 13px;
  color: var(--celadon);
}

/* ---- 问题分流 ---- */

.page-contact .routing-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.page-contact .filter-btn {
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--rock);
  background: transparent;
  border: 1px solid var(--deck-blue);
  border-radius: 999px;
  cursor: pointer;
  transition: color .24s var(--ease), border-color .24s var(--ease), background .24s var(--ease);
}

.page-contact .filter-btn:hover {
  color: var(--cream);
  border-color: var(--amber);
}

.page-contact .filter-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-contact .filter-btn.is-active {
  color: var(--cream);
  border-color: var(--coral);
  background: rgba(255, 107, 61, .12);
}

.page-contact .filter-btn.is-active::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--celadon);
}

.page-contact .topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .topic-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  padding: 18px 20px;
  background: rgba(18, 58, 90, .5);
  border: 1px solid var(--deck-blue);
  border-radius: var(--radius);
  transition: border-color .26s var(--ease), transform .26s var(--ease);
}

.page-contact .topic-item:hover {
  border-color: rgba(232, 169, 60, .55);
  transform: translateY(-2px);
}

.page-contact .topic-item[hidden] {
  display: none;
}

.page-contact .topic-key {
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-contact .topic-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .topic-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  margin: 0 0 4px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--rock);
}

.page-contact .topic-label {
  font-size: 13px;
  color: var(--celadon);
}

/* ---- 图片容器 ---- */

.page-contact .contact-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--deck-blue);
  background: var(--night-blue);
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .figure-cap {
  margin: 0;
  padding: 12px 16px 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--rock);
  background: var(--night-blue);
}

.page-contact .paper-figure .figure-cap {
  background: transparent;
  color: var(--contact-paper-ink);
  border-top: 1px solid rgba(10, 31, 51, .12);
}

/* ---- 时间与节奏 ---- */

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

.page-contact .timing-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 18px 0;
  border-bottom: 1px solid var(--contact-hair);
}

.page-contact .timing-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  color: var(--amber);
}

.page-contact .timing-val {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--rock);
}

/* ---- 米白地址纸面 ---- */

.page-contact .paper-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 30px 22px;
  background: var(--cream);
  border: 1px solid rgba(10, 31, 51, .1);
  border-radius: var(--radius-lg);
}

.page-contact .paper-copy .section-num {
  color: var(--clay);
}

.page-contact .paper-copy .section-title {
  color: var(--deep-sea);
  margin-bottom: 16px;
}

.page-contact .paper-copy p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--contact-paper-ink);
  max-width: 44ch;
}

.page-contact .paper-icp {
  margin: 20px 0 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--clay);
}

.page-contact .paper-figure {
  border-color: rgba(10, 31, 51, .16);
  background: rgba(10, 31, 51, .06);
}

/* ---- 自助问题 ---- */

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

.page-contact .self-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--contact-hair);
}

.page-contact .self-q {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.7;
  color: var(--cream);
}

.page-contact .self-a {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--rock);
}

.page-contact .self-more {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin: 26px 0 0;
}

/* ---- 合作对接 ---- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-contact .coop-copy p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--rock);
  max-width: 52ch;
}

.page-contact .coop-mail {
  margin: 22px 0 0;
  font-size: 17px;
  color: var(--coral);
  overflow-wrap: anywhere;
}

.page-contact .coop-card {
  padding: 22px 22px 20px;
  background: var(--night-blue);
  border: 1px solid var(--deck-blue);
  border-left: 3px solid var(--clay);
  border-radius: var(--radius);
}

.page-contact .coop-card-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--cream);
}

.page-contact .coop-points {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .coop-points li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--rock);
}

.page-contact .coop-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.page-contact .coop-card-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--contact-hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--celadon);
}

.page-contact .coop-legal {
  margin: 30px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--contact-hair);
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--rock);
}

.page-contact .coop-legal a,
.page-contact .self-more a {
  color: var(--amber);
}

.page-contact .coop-legal a:hover,
.page-contact .self-more a:hover {
  color: var(--coral);
}

/* ---- 响应式 ---- */

@media (min-width: 560px) {
  .page-contact .topic-line {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .timing-row {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 26px;
    align-items: baseline;
  }

  .page-contact .self-item {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 24px;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding-bottom: 104px;
  }

  .page-contact .contact-hero {
    padding-top: 34px;
  }

  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 56px;
    align-items: start;
    margin-top: 30px;
  }

  .page-contact .contact-hero-copy {
    order: 2;
  }

  .page-contact .contact-hero-lines {
    order: 1;
  }

  .page-contact .paper-panel {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 46px;
    align-items: center;
    padding: 46px 44px;
  }
}

@media (min-width: 1024px) {
  .page-contact .routing-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 42px;
    align-items: start;
  }

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }
}

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

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