.page-contact {
  --ct-rail: 220px;
  --ct-gap: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(56px, 9vw, 110px);
  overflow-x: clip;
}

/* ---------- 页首 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: var(--ct-gap);
  margin-top: 22px;
}

@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(30px, 5.1vw, 58px);
  line-height: 1.07;
  letter-spacing: -.02em;
  color: var(--chalk);
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  color: var(--mist);
  font-size: var(--fs-body);
  line-height: 1.85;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-hero__figure {
  position: relative;
  margin: 0;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 97%);
  filter: saturate(.82) brightness(.88);
}

.page-contact .contact-hero__figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 14px;
  width: 52px;
  height: 5px;
  background: var(--red);
}

/* ---------- 章节骨架 ---------- */
.page-contact .contact-section {
  padding-top: clamp(48px, 7.5vw, 96px);
}

.page-contact .contact-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 8px 18px;
  align-items: start;
  padding-top: 18px;
  border-top: 3px double var(--gold);
}

@media (min-width: 820px) {
  .page-contact .contact-section__head {
    grid-template-columns: 126px minmax(0, 1fr);
    gap: 8px 34px;
  }
}

.page-contact .section-num {
  font-family: var(--font-index);
  font-weight: 200;
  font-size: clamp(40px, 6.4vw, 78px);
  line-height: .86;
  letter-spacing: -.04em;
  color: var(--red);
}

.page-contact .contact-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(22px, 3.2vw, 38px);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--chalk);
}

.page-contact .contact-section__lead {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: var(--fs-small);
  line-height: 1.82;
  color: var(--mist);
}

/* ---------- 方向切换 ---------- */
.page-contact .dir-shell {
  display: grid;
  gap: 22px;
  margin-top: clamp(24px, 4vw, 40px);
}

@media (min-width: 880px) {
  .page-contact .dir-shell {
    grid-template-columns: var(--ct-rail) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

.page-contact .dir-switch {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

.page-contact .dir-switch::-webkit-scrollbar {
  display: none;
}

@media (min-width: 880px) {
  .page-contact .dir-switch {
    flex-direction: column;
    overflow: visible;
    position: sticky;
    top: 104px;
    padding-bottom: 0;
  }
}

.page-contact .dir-switch__item {
  display: flex;
  flex: none;
  align-items: center;
  gap: 10px;
  padding: 12px 18px 12px 14px;
  background: var(--ink);
  color: var(--mist);
  text-decoration: none;
  font-size: var(--fs-small);
  letter-spacing: .06em;
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--graphite);
  transition: color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .dir-switch__item:hover,
.page-contact .dir-switch__item:focus-visible {
  color: var(--chalk);
  border-left-color: var(--gold);
}

.page-contact .dir-switch__k {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-contact .dir-shell:has(#d-content:target) .dir-switch__item[href="#d-content"],
.page-contact .dir-shell:has(#d-column:target) .dir-switch__item[href="#d-column"],
.page-contact .dir-shell:has(#d-data:target) .dir-switch__item[href="#d-data"],
.page-contact .dir-shell:has(#d-notice:target) .dir-switch__item[href="#d-notice"] {
  background: var(--paper);
  color: var(--night);
  border-left-color: var(--red);
}

.page-contact .dir-shell:has(#d-content:target) .dir-switch__item[href="#d-content"] .dir-switch__k,
.page-contact .dir-shell:has(#d-column:target) .dir-switch__item[href="#d-column"] .dir-switch__k,
.page-contact .dir-shell:has(#d-data:target) .dir-switch__item[href="#d-data"] .dir-switch__k,
.page-contact .dir-shell:has(#d-notice:target) .dir-switch__item[href="#d-notice"] .dir-switch__k {
  color: var(--red);
}

.page-contact .dir-panels {
  min-height: 340px;
}

.page-contact .dir-panel {
  display: none;
  padding: clamp(20px, 3vw, 36px);
  background: var(--ink);
  border: 1px solid var(--graphite);
  border-left: 4px solid var(--red);
  scroll-margin-top: 116px;
}

.page-contact .dir-panel:target,
.page-contact .dir-panels:not(:has(.dir-panel:target)) .dir-panel:first-child {
  display: block;
  animation: ct-panel-in .38s var(--ease) both;
}

@keyframes ct-panel-in {
  from { opacity: 0; transform: translateX(-18px); }
  to { opacity: 1; transform: translateX(0); }
}

.page-contact .dir-panel__head {
  display: grid;
  gap: 12px;
  justify-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--graphite);
}

.page-contact .dir-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.26;
  color: var(--chalk);
}

.page-contact .dir-panel__row {
  display: grid;
  gap: 6px 20px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--graphite);
}

@media (min-width: 720px) {
  .page-contact .dir-panel__row {
    grid-template-columns: 92px minmax(0, 1fr);
  }
}

.page-contact .dir-panel__key {
  font-size: var(--fs-label);
  letter-spacing: .14em;
  color: var(--yellow);
}

.page-contact .dir-panel__val {
  margin: 0;
  color: var(--chalk);
  opacity: .88;
  font-size: var(--fs-small);
  line-height: 1.82;
}

.page-contact .dir-panel__foot {
  margin: 18px 0 0;
  font-size: var(--fs-label);
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 流程 ---------- */
.page-contact .flow {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
}

.page-contact .flow__step {
  position: relative;
  padding: 0 0 30px 62px;
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 42px;
  bottom: 0;
  width: 1px;
  background: var(--graphite);
}

.page-contact .flow__step:last-child {
  padding-bottom: 0;
}

.page-contact .flow__step:last-child::before {
  display: none;
}

.page-contact .flow__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--night);
  border: 1px solid var(--gold);
  color: var(--yellow);
  font-family: var(--font-mono);
  font-size: 12px;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 74% 100%, 0 100%);
}

.page-contact .flow__title {
  margin: 0;
  font-size: var(--fs-sub);
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--chalk);
}

.page-contact .flow__text {
  margin: 8px 0 0;
  max-width: 66ch;
  font-size: var(--fs-small);
  line-height: 1.82;
  color: var(--mist);
}

.page-contact .flow__stage {
  display: inline-block;
  margin-top: 10px;
  padding: 3px 9px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--yellow);
  border: 1px solid var(--graphite);
}

/* ---------- 数据与公告对接 ---------- */
.page-contact .data-line {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 40px);
}

@media (min-width: 900px) {
  .page-contact .data-line {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }
}

.page-contact .data-line__h {
  margin: 0 0 8px;
  font-size: var(--fs-sub);
  font-weight: 700;
  color: var(--chalk);
}

.page-contact .data-line__h + p {
  margin: 0 0 24px;
  font-size: var(--fs-small);
  line-height: 1.84;
  color: var(--mist);
}

.page-contact .data-line__figure {
  margin: 0;
  padding: 12px;
  background: var(--stripe);
  border: 1px solid var(--graphite);
}

.page-contact .data-line__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  filter: saturate(.82) brightness(.9);
}

.page-contact .data-line__figure .media__caption {
  display: block;
  margin-top: 10px;
  font-size: var(--fs-label);
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 材料清单 ---------- */
.page-contact .prep {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
  margin-top: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 4vw, 48px);
  background: var(--paper);
  color: var(--night);
  clip-path: polygon(0 1%, 100% 0, 100% 99%, 0 100%);
}

@media (min-width: 900px) {
  .page-contact .prep {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .prep__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  padding-bottom: 10px;
  font-size: var(--fs-small);
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink);
  border-bottom: 2px solid var(--ink);
}

.page-contact .prep__k {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  background: var(--ink);
  color: var(--paper);
  font-size: 11px;
}

.page-contact .checklist {
  display: grid;
  gap: 2px;
}

.page-contact .checklist__item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 9px 0;
  font-size: var(--fs-small);
  line-height: 1.62;
  color: var(--graphite);
  cursor: pointer;
  border-bottom: 1px solid rgba(36, 48, 61, .16);
}

.page-contact .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: none;
  width: 17px;
  height: 17px;
  margin: 4px 0 0;
  background: var(--chalk);
  border: 1.5px solid var(--graphite);
  cursor: pointer;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .checklist__box:checked {
  background: var(--red);
  border-color: var(--red);
}

.page-contact .checklist__box:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 0;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--chalk);
  border-bottom: 2px solid var(--chalk);
  transform: rotate(40deg);
}

.page-contact .checklist__box:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

.page-contact .checklist__text {
  flex: 1 1 auto;
}

.page-contact .checklist__box:checked ~ .checklist__text {
  color: rgba(36, 48, 61, .5);
  text-decoration: line-through;
  text-decoration-color: rgba(36, 48, 61, .35);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channels {
  margin-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--graphite);
}

.page-contact .channels__row {
  display: grid;
  gap: 6px 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--graphite);
}

@media (min-width: 800px) {
  .page-contact .channels__row {
    grid-template-columns: 86px minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: baseline;
  }
}

.page-contact .channels__key {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-contact .channels__val {
  font-size: var(--fs-body);
  color: var(--chalk);
  word-break: break-word;
}

.page-contact .channels__use {
  font-size: var(--fs-small);
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .channels__note {
  margin: 22px 0 0;
  padding: 14px 18px;
  font-size: var(--fs-small);
  line-height: 1.78;
  color: var(--mist);
  background: var(--stripe);
  border-left: 3px solid var(--yellow);
}

/* ---------- 常见问题 ---------- */
.page-contact .faq {
  margin-top: clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--graphite);
}

.page-contact .faq__item {
  border-bottom: 1px solid var(--graphite);
}

.page-contact .faq__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 0;
  font-size: var(--fs-body);
  font-weight: 500;
  line-height: 1.6;
  color: var(--chalk);
  list-style: none;
  cursor: pointer;
}

.page-contact .faq__q::-webkit-details-marker {
  display: none;
}

.page-contact .faq__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--yellow);
  transition: transform .22s var(--ease), color .22s var(--ease);
}

.page-contact .faq__item[open] .faq__q::after {
  transform: rotate(45deg);
  color: var(--red);
}

.page-contact .faq__a {
  padding: 0 0 22px;
  max-width: 68ch;
}

.page-contact .faq__a p {
  margin: 0;
  font-size: var(--fs-small);
  line-height: 1.84;
  color: var(--mist);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .dir-panel:target,
  .page-contact .dir-panels:not(:has(.dir-panel:target)) .dir-panel:first-child {
    animation: none;
  }

  .page-contact .dir-switch__item,
  .page-contact .checklist__box,
  .page-contact .faq__q::after {
    transition: none;
  }
}
<<<END>>>