.page-contact {
  --paper-dim: rgba(232, 242, 238, 0.74);
  --paper-faint: rgba(232, 242, 238, 0.56);
  padding-block: 26px 76px;
  color: var(--paper);
  font-size: var(--fs-16);
  line-height: 1.75;
}

.page-contact .breadcrumb {
  margin-bottom: 26px;
}

/* ---------- 首屏声明区 ---------- */
.page-contact .desk-head {
  max-width: 780px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 30px;
}

.page-contact .desk-head h1 {
  margin: 10px 0 16px;
  font-size: clamp(1.75rem, 5.4vw, 2.75rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-contact .desk-head .lede {
  margin: 0;
  color: var(--paper-dim);
  font-size: var(--fs-16);
  max-width: 62ch;
}

/* ---------- 非对称联系台 ---------- */
.page-contact .desk-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: start;
}

.page-contact .desk-card {
  position: relative;
  padding: 22px 20px 22px 24px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  background: linear-gradient(168deg, rgba(18, 61, 50, 0.96), rgba(11, 43, 36, 0.98));
  overflow: hidden;
}

.page-contact .desk-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--cyan);
}

.page-contact .desk-card__title {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  font-family: var(--font-mono);
  color: var(--cyan);
  text-transform: uppercase;
}

.page-contact .desk-line {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact .desk-line__label {
  margin: 0 0 6px;
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--slate);
}

.page-contact .desk-line__value {
  display: inline-block;
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
  word-break: break-all;
}

.page-contact .desk-line__value--mail {
  font-size: var(--fs-14);
}

.page-contact .desk-line__value:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .desk-line__value:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
  border-radius: 2px;
}

.page-contact .desk-line__note {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--paper-faint);
}

.page-contact .desk-card__media {
  margin-top: 20px;
  border: 1px solid var(--line);
}

/* ---------- 右侧问题类型表 ---------- */
.page-contact .desk-main h2 {
  margin: 0 0 12px;
  font-size: clamp(1.25rem, 3.4vw, 1.75rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-contact .desk-main__intro {
  margin: 0 0 22px;
  font-size: var(--fs-14);
  color: var(--paper-dim);
  max-width: 62ch;
}

.page-contact .desk-main a,
.page-contact .mail-kit a,
.page-contact .co-build a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .desk-main a:hover,
.page-contact .mail-kit a:hover,
.page-contact .co-build a:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan-soft);
}

.page-contact .desk-main a:focus-visible,
.page-contact .mail-kit a:focus-visible,
.page-contact .co-build a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

.page-contact .issue-table-wrap {
  border-top: 1px solid var(--line-strong);
}

.page-contact .issue-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-contact .issue-table caption {
  text-align: left;
  padding: 12px 0 10px;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-contact .issue-table thead th {
  text-align: left;
  padding: 0 14px 10px 0;
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--cyan);
  border-bottom: 1px solid var(--line-strong);
  font-weight: 700;
}

.page-contact .issue-table tbody th,
.page-contact .issue-table tbody td {
  text-align: left;
  vertical-align: top;
  padding: 14px 14px 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .issue-table tbody th {
  width: 40%;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .issue-table tbody td {
  color: var(--paper-dim);
}

.page-contact .issue-table tbody tr {
  transition: background-color var(--dur) var(--ease);
}

.page-contact .issue-table tbody tr:hover {
  background: rgba(77, 240, 208, 0.05);
}

.page-contact .desk-main__foot {
  margin: 18px 0 0;
  font-size: var(--fs-14);
  color: var(--paper-faint);
}

/* ---------- 发信清单 ---------- */
.page-contact .mail-kit {
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-contact .mail-kit h2 {
  margin: 8px 0 12px;
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  line-height: 1.32;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-contact .mail-kit__intro p {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--paper-dim);
  max-width: 46ch;
}

.page-contact .mail-kit__hint {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  font-family: var(--font-mono);
  color: var(--slate);
}

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .checklist__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(23, 42, 58, 0.34);
  font-size: var(--fs-14);
  line-height: 1.65;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .checklist__item:hover {
  border-color: var(--line-cyan);
  background: rgba(77, 240, 208, 0.06);
}

.page-contact .checklist__item:has(input:checked) {
  border-color: var(--line-cyan);
  background: rgba(77, 240, 208, 0.1);
}

.page-contact .checklist__item input {
  flex: none;
  margin-top: 4px;
  width: 15px;
  height: 15px;
  accent-color: var(--cyan);
}

.page-contact .checklist__item input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .mail-kit__privacy {
  margin: 14px 0 0;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 地址门牌块 ---------- */
.page-contact .addr-block {
  margin-top: 46px;
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: rgba(140, 163, 173, 0.07);
  backdrop-filter: blur(6px);
  overflow: hidden;
}

.page-contact .addr-block__plate {
  padding: 24px 20px 24px 24px;
  border-left: 3px solid var(--slate);
}

.page-contact .addr-block__plate h2 {
  margin: 10px 0 12px;
  font-size: var(--fs-20);
  line-height: 1.55;
  font-weight: 700;
  letter-spacing: 0;
}

.page-contact .addr-block__plate p:last-child {
  margin: 0;
  font-size: var(--fs-14);
  color: var(--paper-dim);
  max-width: 52ch;
}

.page-contact .addr-block__meta {
  margin: 0;
  padding: 20px 24px 24px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .addr-block__meta dt {
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-contact .addr-block__meta dd {
  margin: 4px 0 0;
  font-size: var(--fs-14);
  color: var(--paper);
  word-break: break-all;
}

/* ---------- 处理流程 ---------- */
.page-contact .contact-flow {
  position: relative;
  isolation: isolate;
  margin-top: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-900);
  overflow: hidden;
}

.page-contact .contact-flow__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  filter: grayscale(0.55) saturate(0.7);
  z-index: 0;
  max-width: none;
}

.page-contact .contact-flow::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(102deg, rgba(6, 27, 23, 0.97) 28%, rgba(6, 27, 23, 0.7) 82%);
}

.page-contact .contact-flow__inner {
  position: relative;
  z-index: 2;
  padding: 28px 20px 30px;
}

.page-contact .contact-flow h2 {
  margin: 8px 0 22px;
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .flow-scale {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .flow-step {
  position: relative;
  padding: 18px 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(6, 27, 23, 0.62);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .flow-step:hover {
  border-color: var(--line-cyan);
  background: rgba(18, 61, 50, 0.92);
}

.page-contact .flow-num {
  display: block;
  font-size: var(--fs-28);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--cyan);
}

.page-contact .flow-step h3 {
  margin: 12px 0 8px;
  font-size: var(--fs-16);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-contact .flow-step p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 内容共建 ---------- */
.page-contact .co-build {
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.page-contact .co-build h2 {
  margin: 8px 0 14px;
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  line-height: 1.32;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .co-build__lead {
  margin: 0 0 22px;
  font-size: var(--fs-14);
  color: var(--paper-dim);
  max-width: 64ch;
}

.page-contact .co-build__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .co-build__item {
  padding: 18px 18px 20px;
  border-left: 2px solid var(--line-cyan);
  background: rgba(23, 42, 58, 0.42);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-contact .co-build__idx {
  display: inline-block;
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .co-build__item h3 {
  margin: 8px 0 8px;
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-contact .co-build__item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .co-build__foot {
  margin: 22px 0 0;
  font-size: var(--fs-14);
  color: var(--paper-faint);
  max-width: 68ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .mail-kit {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 34px;
  }

  .page-contact .flow-scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .co-build__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .contact-flow__inner {
    padding: 32px 28px 36px;
  }
}

@media (min-width: 880px) {
  .page-contact .desk-layout {
    grid-template-columns: minmax(286px, 336px) minmax(0, 1fr);
    gap: 44px;
  }

  .page-contact .desk-card {
    position: sticky;
    top: 24px;
    padding: 24px 22px 24px 26px;
  }

  .page-contact .addr-block {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }

  .page-contact .addr-block__meta {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 24px 26px;
  }

  .page-contact .addr-block__plate {
    padding: 26px 26px 26px 28px;
  }
}

@media (max-width: 639px) {
  .page-contact .issue-table,
  .page-contact .issue-table tbody,
  .page-contact .issue-table tr,
  .page-contact .issue-table th,
  .page-contact .issue-table td {
    display: block;
    width: auto;
  }

  .page-contact .issue-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .page-contact .issue-table tbody tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .page-contact .issue-table tbody th {
    padding: 0 0 6px;
    font-size: var(--fs-16);
    border-bottom: 0;
  }

  .page-contact .issue-table tbody td {
    padding: 0;
    border-bottom: 0;
  }

  .page-contact .desk-card__media {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .desk-line__value,
  .page-contact .issue-table tbody tr,
  .page-contact .checklist__item,
  .page-contact .flow-step,
  .page-contact .desk-main a,
  .page-contact .mail-kit a,
  .page-contact .co-build a {
    transition: none;
  }
}