.page-contact {
  --fb-gap: clamp(20px, 3vw, 40px);
  --fb-block: clamp(48px, 7vw, 96px);
}

.page-contact .fb-hero {
  padding-top: clamp(20px, 3vw, 44px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-contact .fb-hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .fb-hero-copy .label {
  display: inline-block;
  margin-bottom: 14px;
}

.page-contact .fb-title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(38px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .fb-title em {
  font-style: normal;
  color: var(--fox);
}

.page-contact .fb-lede {
  margin: 0 0 18px;
  max-width: 52ch;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .fb-hero-note {
  margin: 0;
  max-width: 50ch;
  padding-left: 16px;
  border-left: 3px solid var(--fox);
  font-size: 15px;
  line-height: 1.55;
  color: var(--mist);
}

.page-contact .fb-shot {
  position: relative;
  z-index: 0;
  margin: 0;
  overflow: hidden;
  background: var(--ink-2);
}

.page-contact .fb-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.06);
}

.page-contact .fb-shot--hero {
  aspect-ratio: 7 / 5;
}

.page-contact .fb-shot--phone {
  aspect-ratio: 10 / 7;
}

@media (min-width: 900px) {
  .page-contact .fb-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-contact .fb-shot--hero {
    margin-bottom: -24px;
  }

  .page-contact .fb-shot--hero::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 46%;
    height: 5px;
    background: var(--fox);
  }
}

/* 左索引 + 右内容 */
.page-contact .fb-split {
  border-top: 1px solid var(--grey);
  padding-block: var(--fb-block);
}

.page-contact .fb-split-grid {
  display: grid;
  gap: var(--fb-gap);
}

.page-contact .fb-index-label {
  display: block;
  margin: 0 0 14px;
  color: var(--mist);
}

.page-contact .fb-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .fb-index-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 14px;
  border-left: 3px solid transparent;
  text-decoration: none;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.35;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .fb-index-list .num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .fb-index-list a:hover,
.page-contact .fb-index-list a:focus-visible {
  background: var(--cream);
  border-left-color: var(--fox);
}

.page-contact .fb-index-list a:hover .num,
.page-contact .fb-index-list a:focus-visible .num {
  color: var(--fox-deep);
}

.page-contact .fb-index-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--grey);
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

@media (min-width: 1000px) {
  .page-contact .fb-split-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 3fr);
    gap: clamp(40px, 5vw, 88px);
  }

  .page-contact .fb-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }
}

.page-contact .fb-h2 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-contact .fb-body {
  margin: 0 0 20px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
}

/* 四类问题 */
.page-contact .fb-types {
  display: grid;
  gap: 1px;
  background: var(--grey);
  border: 1px solid var(--grey);
}

.page-contact .fb-type {
  background: var(--paper);
  padding: clamp(20px, 2.4vw, 32px);
  border-left: 3px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .fb-type:hover,
.page-contact .fb-type:focus-within {
  background: var(--cream);
  border-left-color: var(--fox);
}

.page-contact .fb-type-tag {
  display: block;
  margin: 0 0 10px;
  color: var(--fox-deep);
}

.page-contact .fb-type h3 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(21px, 2.3vw, 29px);
  line-height: 1.12;
  color: var(--ink);
}

.page-contact .fb-type p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
}

.page-contact .fb-need {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-contact .fb-need-key {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fox-deep);
}

/* 准备清单 */
.page-contact .fb-prep {
  border-top: 1px solid var(--grey);
  padding-block: var(--fb-block);
}

.page-contact .fb-prep-grid {
  display: grid;
  gap: var(--fb-gap);
}

@media (min-width: 900px) {
  .page-contact .fb-prep-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }
}

.page-contact .fb-checklist {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.page-contact .fb-checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--grey);
}

.page-contact .fb-checklist li:first-child {
  border-top: 1px solid var(--grey);
}

.page-contact .fb-check-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  line-height: 1.4;
  color: var(--fox);
}

.page-contact .fb-check-title {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.2;
  color: var(--ink);
}

.page-contact .fb-check-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.55;
  color: var(--mist);
}

.page-contact .fb-prep-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 22px;
  margin-bottom: 18px;
}

.page-contact .fb-prep-foot {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.55;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-contact .fb-shot--phone {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

/* 联系方式 */
.page-contact .fb-contact {
  border-top: 1px solid var(--grey);
  padding-block: var(--fb-block);
}

.page-contact .fb-contact-grid {
  display: grid;
  gap: clamp(24px, 3vw, 36px);
}

@media (min-width: 900px) {
  .page-contact .fb-contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: clamp(40px, 5vw, 88px);
    align-items: start;
  }

  .page-contact .fb-contact-note {
    grid-column: 1 / -1;
  }
}

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

.page-contact .fb-channels li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--grey);
}

.page-contact .fb-ch-label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .fb-ch-value {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(16px, 1.7vw, 23px);
  line-height: 1.3;
  color: var(--ink);
  word-break: break-all;
  text-decoration: underline;
  text-decoration-color: var(--fox);
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
  transition: text-decoration-thickness var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .fb-channels li:hover .fb-ch-value {
  color: var(--fox-deep);
  text-decoration-thickness: 4px;
}

.page-contact .fb-contact-note {
  margin: 0;
  max-width: 78ch;
  padding-top: 20px;
  border-top: 1px solid var(--grey);
  font-size: 15px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .fb-contact-note a {
  color: var(--fox-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--fox);
}

.page-contact .fb-contact-note a:hover,
.page-contact .fb-contact-note a:focus-visible {
  border-bottom-width: 2px;
}

/* 受理与响应 */
.page-contact .fb-sla {
  background: var(--ink);
  color: var(--cream);
  padding-block: var(--fb-block);
}

.page-contact .fb-h2--light {
  color: var(--cream);
}

.page-contact .fb-sla-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(245, 241, 232, 0.18);
  border: 1px solid rgba(245, 241, 232, 0.18);
}

.page-contact .fb-sla-list li {
  background: var(--ink);
  padding: clamp(20px, 2.6vw, 32px);
}

.page-contact .fb-sla-num {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 46px);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--fox);
  font-variant-numeric: tabular-nums;
}

.page-contact .fb-sla-text {
  display: block;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.6;
  color: var(--cream);
}

@media (min-width: 820px) {
  .page-contact .fb-sla-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 底部办公与备案条 */
.page-contact .fb-bottom {
  background: var(--ink-2);
  color: var(--cream);
  padding-block: clamp(28px, 4vw, 46px);
}

.page-contact .fb-bottom-grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

@media (min-width: 800px) {
  .page-contact .fb-bottom-grid {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-contact .fb-bottom-block--right {
    text-align: right;
  }
}

.page-contact .fb-bottom-label {
  display: block;
  margin: 0 0 10px;
  color: var(--fox);
  font-size: 11px;
}

.page-contact .fb-bottom-line {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.55;
  color: var(--cream);
}

.page-contact .fb-bottom-mono {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-contact .fb-bottom-sub {
  margin: 0;
  max-width: 62ch;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(245, 241, 232, 0.72);
}

.page-contact .fb-bottom-sub a {
  color: var(--cream);
  text-decoration: none;
  border-bottom: 1px solid var(--fox);
}

.page-contact .fb-bottom-sub a:hover,
.page-contact .fb-bottom-sub a:focus-visible {
  color: var(--fox);
}
<<<END>>>