.page-contact {
  --pc-cut: 22px;
  display: block;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
}

.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.75rem);
  padding-bottom: clamp(2rem, 6vw, 4.5rem);
}

.page-contact .contact-stream {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2.2vw, 1.75rem);
  min-width: 0;
}

.page-contact .pc-section {
  padding: clamp(1.25rem, 3vw, 2.5rem);
  min-width: 0;
}

/* ---------- 联系面板 ---------- */
.page-contact .contact-hero {
  position: relative;
  background: var(--deep);
  color: var(--text-inv);
  padding: clamp(1.5rem, 3.4vw, 3rem);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, 0 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 34%;
  background: var(--signal);
}

.page-contact .contact-hero .eyebrow {
  margin: 0;
  color: var(--signal);
  letter-spacing: 0.2em;
}

.page-contact .contact-hero h1 {
  color: var(--text-inv);
  margin: 0.4rem 0 0.75rem;
  max-width: 22ch;
}

.page-contact .contact-hero .lead {
  color: var(--line);
  max-width: 62ch;
  margin: 0;
}

.page-contact .contact-cards {
  display: grid;
  gap: 1px;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  background: rgba(198, 206, 214, 0.24);
  border: 1px solid rgba(198, 206, 214, 0.24);
}

.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: clamp(1rem, 2vw, 1.4rem);
  background: var(--deep);
}

.page-contact .contact-card__label {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-contact .contact-card__value {
  margin: 0;
  font-size: clamp(0.95rem, 1.6vw, 1.08rem);
  line-height: 1.45;
  color: var(--text-inv);
  word-break: break-word;
}

.page-contact .contact-card__note {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--line);
}

.page-contact .channel-rules {
  list-style: none;
  margin: clamp(1.25rem, 2.5vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
  border-top: 1px solid rgba(198, 206, 214, 0.28);
  padding-top: clamp(1rem, 2vw, 1.5rem);
}

.page-contact .channel-rules li {
  font-size: 0.84rem;
  line-height: 1.65;
  color: var(--line);
}

.page-contact .channel-rules .mono {
  display: inline-block;
  min-width: 6.5rem;
  color: var(--text-inv);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

/* ---------- 四步核验 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: clamp(1.25rem, 2.5vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .step-list > li {
  background: var(--paper);
  min-width: 0;
}

.page-contact .step__box {
  height: 100%;
  padding: 1rem 1.1rem 1.15rem;
  border-left: 3px solid transparent;
  transition: border-color 0.16s var(--ease);
}

.page-contact .step__box[open] {
  border-left-color: var(--signal);
}

.page-contact .step__box > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
}

.page-contact .step__box > summary::-webkit-details-marker {
  display: none;
}

.page-contact .step__no {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--signal);
}

.page-contact .step__title {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.page-contact .step__box p {
  margin: 0.7rem 0 0;
  font-size: 0.85rem;
  line-height: 1.72;
  color: var(--text);
}

/* ---------- 批次追溯 ---------- */
.page-contact .table-caption {
  text-align: left;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--mid);
  padding-bottom: 0.5rem;
}

.page-contact .data-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 0.85rem;
  background: var(--paper);
}

.page-contact .data-table th,
.page-contact .data-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.62rem 0.75rem;
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.page-contact .data-table thead th {
  background: var(--blue);
  color: var(--text-inv);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  border-bottom-color: var(--blue);
}

.page-contact .data-table tbody th {
  font-weight: 600;
  white-space: nowrap;
  color: var(--deep);
}

.page-contact .data-table tbody tr:nth-child(even) {
  background: rgba(198, 206, 214, 0.16);
}

.page-contact .trace-grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
}

.page-contact .sub-head {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--deep);
}

.page-contact .batch-format {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.9rem 0 0;
  padding: 0;
}

.page-contact .batch-format li {
  flex: 1 1 4rem;
  min-width: 3.9rem;
  border: 1px solid var(--line);
  padding: 0.55rem 0.4rem 0.6rem;
  text-align: center;
  background: var(--paper);
}

.page-contact .batch-format .mono {
  display: block;
  font-size: 1.05rem;
  color: var(--blue);
}

.page-contact .batch-format__label {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  color: var(--mid);
  line-height: 1.3;
}

.page-contact .trace-format__note {
  margin: 1rem 0 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 字段说明 ---------- */
.page-contact .field-note {
  margin: clamp(1rem, 2vw, 1.5rem) 0 0;
  padding-left: 0.9rem;
  border-left: 3px solid var(--blue-light);
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--text);
}

/* ---------- 本地化支持 ---------- */
.page-contact .local-panel {
  background: var(--teal);
  color: var(--text-inv);
}

.page-contact .local-panel .eyebrow {
  margin: 0;
  color: var(--amber);
  letter-spacing: 0.2em;
}

.page-contact .local-panel h2 {
  color: var(--text-inv);
  margin: 0.35rem 0 0;
}

.page-contact .local-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.1rem;
}

.page-contact .local-grid p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--line);
}

.page-contact .local-panel .btn-row {
  margin-top: 1.4rem;
}

.page-contact .local-panel .btn-ghost {
  border-color: rgba(247, 248, 250, 0.45);
  color: var(--text-inv);
}

/* ---------- 备案 ---------- */
.page-contact .legal-block .display {
  margin: 0.35rem 0 1rem;
}

.page-contact .legal-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
}

.page-contact .legal-tag {
  display: inline-block;
  border: 1px solid var(--line);
  padding: 0.45rem 0.8rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--mid);
}

.page-contact .legal-note {
  margin: 1.1rem 0 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mid);
  max-width: 68ch;
}

/* ---------- 右侧索引 ---------- */
.page-contact .toc-rail {
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
}

.page-contact .toc-rail .annotation {
  margin: 0 0 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--mid);
}

.page-contact .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-contact .toc-link {
  display: inline-block;
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--deep);
  text-decoration: none;
  transition: border-color 0.16s var(--ease), color 0.16s var(--ease);
}

.page-contact .toc-link:hover,
.page-contact .toc-link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}

/* ---------- 图片容器 ---------- */
.page-contact .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 0.6rem;
}

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

.page-contact .media-caption {
  margin: 0.6rem 0 0;
  font-size: 0.76rem;
  line-height: 1.6;
  color: var(--mid);
}

.page-contact .media-frame--wide {
  margin-top: clamp(1rem, 2.4vw, 1.75rem);
}

/* ---------- 窄屏与宽屏 ---------- */
@media (max-width: 559px) {
  .page-contact .channel-rules .mono {
    display: block;
    min-width: 0;
    margin-bottom: 0.15rem;
  }
  .page-contact .legal-row {
    flex-direction: column;
    align-items: stretch;
  }
  .page-contact .legal-row .btn {
    text-align: center;
  }
}

@media (min-width: 620px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .local-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 860px) {
  .page-contact .step-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-contact .trace-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: start;
  }
  .page-contact .toc-rail {
    position: sticky;
    top: 5rem;
    order: 0;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 1.1rem;
  }
  .page-contact .toc-list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.15rem;
  }
  .page-contact .toc-link {
    display: block;
    border: 0;
    border-left: 2px solid transparent;
    padding: 0.35rem 0 0.35rem 0.6rem;
    color: var(--mid);
  }
  .page-contact .toc-link:hover,
  .page-contact .toc-link:focus-visible {
    border-left-color: var(--signal);
    color: var(--deep);
  }
}

@media (max-width: 999px) {
  .page-contact .toc-rail {
    order: -1;
  }
}