/* ===== 联系通道页 · page-contact ===== */
.page-contact {
  --pc-card-shadow: 6px 6px 0 -1px rgba(154, 170, 185, 0.10);
  --pc-panel-bg: var(--ink-700);
  --pc-soft: rgba(154, 170, 185, 0.14);
}

.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact input:focus-visible {
  outline: 2px solid var(--focus-500);
  outline-offset: 2px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 36px 0 34px;
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(192, 138, 62, 0.11), transparent 62%),
    radial-gradient(90% 80% at 0% 100%, rgba(63, 154, 158, 0.09), transparent 60%);
}

.page-contact .contact-hero__num {
  position: absolute;
  top: 14px;
  right: 0;
  font-family: var(--font-mono);
  font-weight: 200;
  font-size: 84px;
  line-height: 0.9;
  letter-spacing: -0.02em;
  color: rgba(224, 179, 107, 0.15);
  pointer-events: none;
  user-select: none;
}

.page-contact .contact-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-300);
}

.page-contact .contact-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(38px, 11vw, 72px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 36rem;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 24px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--hair);
  list-style: none;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
}

.page-contact .contact-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
}

.page-contact .contact-hero__facts .num {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.03em;
  color: var(--copper-300);
}

/* ---------- 分区骨架 ---------- */
.page-contact .contact-channels,
.page-contact .partner,
.page-contact .coverage {
  padding: 40px 0 36px;
  border-top: 1px solid var(--hair);
}

.page-contact .section__head {
  padding-bottom: 22px;
}

.page-contact .section__kicker {
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  color: var(--copper-300);
}

.page-contact .section__title {
  font-family: var(--font-heading);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-contact .section__lede {
  max-width: 44rem;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

/* ---------- 双栏面板 ---------- */
.page-contact .contact-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 4px;
}

.page-contact .contact-panel__col {
  min-width: 0;
}

/* ---------- 图片容器 ---------- */
.page-contact .figure {
  margin: 0 0 20px;
}

.page-contact .figure__frame {
  overflow: hidden;
  border: 1px solid var(--hair);
  background:
    linear-gradient(135deg, rgba(192, 138, 62, 0.10), transparent 55%),
    repeating-linear-gradient(90deg, rgba(154, 170, 185, 0.07) 0 1px, transparent 1px 28px),
    var(--ink-800);
}

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

.page-contact .figure__cap {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-card {
  position: relative;
  margin-bottom: 16px;
  padding: 20px 20px 18px;
  background: var(--pc-panel-bg);
  border: 1px solid var(--hair);
  border-top: 3px solid var(--copper-500);
  border-radius: var(--radius);
  box-shadow: var(--pc-card-shadow);
  transition: transform 160ms ease, border-color 160ms ease;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--hair-strong);
}

.page-contact .channel-card--copper { border-top-color: var(--copper-500); }
.page-contact .channel-card--celadon { border-top-color: var(--celadon-500); }
.page-contact .channel-card--cinnabar { border-top-color: var(--cinnabar-600); }

.page-contact .channel-card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.page-contact .channel-card__title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-contact .channel-card__value {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--copper-300);
  word-break: break-all;
}

.page-contact .channel-card--celadon .channel-card__value {
  color: var(--celadon-500);
}

.page-contact .channel-card__text {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-contact .channel-card--cinnabar .channel-card__text {
  margin-bottom: 4px;
}

.page-contact .channel-card__copy {
  font-size: 13px;
}

.page-contact [data-copy-state="done"] {
  border-color: var(--copper-500);
  color: var(--copper-300);
}

/* ---------- 小标题 ---------- */
.page-contact .sub-title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.page-contact .sub-lede {
  margin: 0 0 18px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-muted);
}

/* ---------- 标题写法示例 ---------- */
.page-contact .tpl-block {
  margin-bottom: 36px;
}

.page-contact .tpl {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
  padding: 13px 14px;
  background: var(--ink-800);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--copper-500);
}

.page-contact .tpl__body {
  flex: 1 1 220px;
  min-width: 0;
}

.page-contact .tpl__format {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--copper-300);
}

.page-contact .tpl__sample {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  word-break: break-word;
}

.page-contact .tpl__copy {
  flex: 0 0 auto;
  font-size: 12px;
}

/* ---------- 准备清单 ---------- */
.page-contact .prep-block {
  margin-top: 6px;
}

.page-contact .prep-figure {
  margin: 16px 0 6px;
}

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

.page-contact .prep__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--hair);
}

.page-contact .prep__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--hair-strong);
  border-radius: 1px;
  background: transparent;
  cursor: pointer;
}

.page-contact .prep__box:checked {
  border-color: var(--copper-500);
}

.page-contact .prep__box:checked::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--copper-500);
}

.page-contact .prep__label {
  flex: 1 1 auto;
  min-width: 0;
  cursor: pointer;
}

.page-contact .prep__key {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 14px;
  color: var(--text-primary);
}

.page-contact .prep__desc {
  display: block;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.72;
  color: var(--text-muted);
}

/* ---------- 合作对接 ---------- */
.page-contact .partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .partner__item {
  padding: 20px 18px;
  background: var(--ink-800);
  border: 1px solid var(--hair);
  border-top: 3px solid var(--copper-500);
}

.page-contact .partner__item:nth-child(2) { border-top-color: var(--celadon-500); }
.page-contact .partner__item:nth-child(3) { border-top-color: var(--cinnabar-600); }

.page-contact .partner__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.page-contact .partner__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 17px;
  color: var(--text-primary);
}

.page-contact .partner__item p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-contact .partner__item .partner__code {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--copper-300);
  word-break: break-word;
}

/* ---------- 覆盖带 ---------- */
.page-contact .coverage-band {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 6px;
  border: 1px solid var(--hair);
  background: var(--ink-800);
}

.page-contact .coverage-cell {
  position: relative;
  min-width: 0;
  padding: 20px 18px 18px;
  border-top: 1px solid var(--hair);
}

.page-contact .coverage-cell:first-child {
  border-top: 0;
}

.page-contact .coverage-cell::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--copper-300);
}

.page-contact .coverage-cell__num {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 30px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--copper-300);
}

.page-contact .coverage-cell__label {
  display: block;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.65;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ---------- 站点信息表 ---------- */
.page-contact .site-meta {
  margin-top: 28px;
  border-top: 1px solid var(--hair);
}

.page-contact .site-meta .meta-list__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 4px 18px;
  padding: 12px 0;
  border-bottom: 1px solid var(--hair);
}

.page-contact .site-meta .meta-list__key {
  flex: 0 0 auto;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.page-contact .site-meta .meta-list__val {
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  text-align: right;
  word-break: break-word;
}

/* ---------- 延伸入口 ---------- */
.page-contact .contact-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--hair);
}

.page-contact .contact-next .link-more {
  font-size: 14px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-hero {
    padding: 52px 0 42px;
  }

  .page-contact .contact-hero__num {
    top: 30px;
    font-size: 116px;
  }

  .page-contact .contact-hero__lede {
    font-size: 17px;
  }

  .page-contact .partner__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .coverage-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .coverage-cell {
    border-top: 0;
    border-right: 1px solid var(--hair);
  }

  .page-contact .coverage-cell:nth-child(2n) {
    border-right: 0;
  }

  .page-contact .coverage-cell:nth-child(n + 3) {
    border-top: 1px solid var(--hair);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: 64px 0 52px;
  }

  .page-contact .contact-hero__num {
    top: 40px;
    font-size: 164px;
  }

  .page-contact .contact-channels,
  .page-contact .partner,
  .page-contact .coverage {
    padding: 56px 0 48px;
  }

  .page-contact .contact-panel {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .coverage-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .coverage-cell {
    border-right: 1px solid var(--hair);
    border-top: 0;
  }

  .page-contact .coverage-cell:last-child {
    border-right: 0;
  }

  .page-contact .coverage-cell:nth-child(n + 3) {
    border-top: 0;
  }

  .page-contact .site-meta .meta-list__val {
    text-align: right;
  }
}

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

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