/* ===== 反馈与联系 page-contact ===== */

.page-contact .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-intro {
  padding: 24px 0 0;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

.page-contact .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  transition: color 120ms var(--ease);
}

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

.page-contact .intro-grid {
  display: grid;
  gap: 26px;
  padding: 26px 0 30px;
}

.page-contact .intro-main h1 {
  margin: 10px 0 14px;
  font-size: clamp(30px, 8.4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.page-contact .intro-main .lead {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .intro-side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 20px;
  background: var(--ink-900);
  border: 2px solid var(--line-blue);
  border-left: 6px solid var(--signal-orange);
  box-shadow: var(--shadow-hard);
}

.page-contact .intro-tag {
  margin: 0;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-glow);
  border-bottom: 2px solid var(--cyan-glow);
}

.page-contact .intro-side p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .intro-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-contact .route-rule {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 12px;
}

.page-contact .route-rule::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  transform: translateY(-50%);
  background: var(--line-blue);
}

.page-contact .route-rule span {
  position: relative;
  width: 9px;
  height: 9px;
  background: var(--ink-950);
  border: 2px solid var(--cyan-glow);
  transform: rotate(45deg);
}

.page-contact .route-rule span:nth-child(2) {
  border-color: var(--signal-orange);
}

/* ---------- 章节标题 ---------- */
.page-contact .section-head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
  margin-bottom: 26px;
}

.page-contact .section-head h2 {
  margin: 0;
  font-size: clamp(22px, 4.6vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-contact .section-head .lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 自助入口 ---------- */
.page-contact .self-grid {
  display: grid;
  border-top: 2px solid var(--line-blue);
}

.page-contact .self-item {
  padding: 22px 0;
  border-bottom: 2px solid var(--line-blue);
}

.page-contact .self-item h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-contact .self-item p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 联系渠道表 ---------- */
.page-contact .channel-table {
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid var(--line-blue);
  border-bottom: 2px solid var(--line-blue);
  font-size: 15px;
}

.page-contact .channel-table,
.page-contact .channel-table tbody,
.page-contact .channel-table tr,
.page-contact .channel-table th,
.page-contact .channel-table td {
  display: block;
}

.page-contact .channel-table tr {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-blue);
  transition: background-color 100ms var(--ease);
}

.page-contact .channel-table tr:last-child {
  border-bottom: 0;
}

.page-contact .channel-table th {
  padding: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.page-contact .channel-table td {
  padding: 0 0 8px;
  line-height: 1.75;
}

.page-contact .channel-table td:last-child {
  padding-bottom: 0;
}

.page-contact .cell-value {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan-glow);
  word-break: break-all;
}

.page-contact .cell-value--plain {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--text-main);
  word-break: normal;
}

.page-contact .cell-note {
  color: var(--text-dim);
}

.page-contact .table-foot {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 回复节奏（标签页） ---------- */
.page-contact .timing-tabs {
  background: var(--ink-900);
  border: 2px solid var(--line-blue);
}

.page-contact .tab-list {
  display: flex;
  border-bottom: 2px solid var(--line-blue);
}

.page-contact .tab {
  flex: 1 1 0;
  min-height: 48px;
  padding: 14px 12px;
  background: transparent;
  border: 0;
  border-right: 2px solid var(--line-blue);
  color: var(--text-dim);
  font: inherit;
  font-weight: 800;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: background-color 120ms var(--ease), color 120ms var(--ease);
}

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

.page-contact .tab[aria-selected="true"],
.page-contact .tab.is-on {
  background: var(--signal-orange);
  color: var(--ink-950);
}

.page-contact .tab:focus-visible {
  outline: 2px solid var(--cyan-glow);
  outline-offset: -2px;
}

.page-contact .tab-panel {
  padding: 22px 18px;
}

.page-contact .tab-panel + .tab-panel {
  border-top: 2px solid var(--line-blue);
}

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

.page-contact .timing-list li {
  display: grid;
  gap: 4px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .timing-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-glow);
}

/* ---------- 企业合作 ---------- */
.page-contact .partner-grid {
  display: grid;
  gap: 32px;
}

.page-contact .partner-list {
  display: grid;
  gap: 4px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.page-contact .partner-item {
  padding: 16px 0 16px 18px;
  border-left: 3px solid var(--line-blue);
  transition: border-color 150ms var(--ease);
}

.page-contact .partner-item:hover {
  border-left-color: var(--signal-orange);
}

.page-contact .partner-item h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-contact .partner-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .prep-title {
  margin: 0 0 16px;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

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

.page-contact .prep-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .prep-num {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--signal-orange);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.page-contact .prep-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .media-frame {
  display: block;
  margin: 0;
  overflow: hidden;
  background: var(--ink-900);
  border: 2px solid var(--line-blue);
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .partner-side .media-frame {
  aspect-ratio: 9 / 7;
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .visit-grid {
  display: grid;
  gap: 26px;
}

.page-contact .visit-figure {
  aspect-ratio: 3 / 2;
}

.page-contact .visit-body h2 {
  margin: 10px 0 14px;
  font-size: clamp(22px, 4.6vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.page-contact .visit-body p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .visit-meta {
  margin-top: 6px !important;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 收尾 ---------- */
.page-contact .tail-inner {
  display: grid;
  gap: 20px;
  padding: 26px 0;
  border-top: 2px solid var(--line-blue);
}

.page-contact .tail-copy h2 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-contact .tail-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .tail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 800px) {
  .page-contact .intro-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 40px;
    padding: 34px 0 38px;
  }

  .page-contact .self-grid {
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 2px solid var(--line-blue);
  }

  .page-contact .self-item {
    padding: 26px 24px;
    border-bottom: 0;
    border-left: 2px solid var(--line-blue);
  }

  .page-contact .self-item:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-contact .channel-table {
    display: table;
  }

  .page-contact .channel-table tbody {
    display: table-row-group;
  }

  .page-contact .channel-table tr {
    display: table-row;
    padding: 0;
    border-bottom: 0;
  }

  .page-contact .channel-table th,
  .page-contact .channel-table td {
    display: table-cell;
    padding: 20px 18px;
    vertical-align: top;
    border-bottom: 1px solid var(--line-blue);
  }

  .page-contact .channel-table tr:last-child th,
  .page-contact .channel-table tr:last-child td {
    border-bottom: 0;
  }

  .page-contact .channel-table th {
    width: 140px;
    padding-left: 0;
    white-space: nowrap;
  }

  .page-contact .channel-table td.cell-value {
    width: 300px;
  }

  .page-contact .channel-table tbody tr:hover th,
  .page-contact .channel-table tbody tr:hover td {
    background: var(--ink-800);
  }

  .page-contact .tab-panel {
    padding: 26px 24px;
  }

  .page-contact .partner-grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .partner-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-contact .visit-grid {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: center;
  }

  .page-contact .tail-inner {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 1180px) {
  .page-contact .intro-grid {
    grid-template-columns: 8fr 4fr;
  }
}