.page-contact {
  background: var(--paper);
  color: var(--ink);
}

.page-contact .pc-intro {
  max-width: 60ch;
  padding: clamp(22px, 3.4vw, 44px) 0 clamp(20px, 2.8vw, 34px);
}

.page-contact .pc-intro h1 {
  margin: 0.35em 0 0.5em;
  font-size: clamp(1.85rem, 5vw, 3.35rem);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.page-contact .pc-intro .lede {
  margin: 0;
  font-size: clamp(0.98rem, 1.5vw, 1.06rem);
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 46ch;
}

.page-contact .pc-hero {
  margin: 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
  background: var(--fir-deep);
}

.page-contact .pc-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .pc-hero figcaption {
  padding: 10px var(--gutter);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(244, 243, 239, 0.72);
  background: var(--fir-deep);
  border-top: 1px solid var(--line-light);
}

/* 01 联系渠道 */
.page-contact .ch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-contact .ch-cell {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 20px 18px 22px;
  background: var(--paper-3);
  min-width: 0;
}

.page-contact .ch-cell__name {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--fir);
}

.page-contact .ch-cell__value {
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.1rem);
  font-weight: 800;
  line-height: 1.45;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .ch-cell__value--mail {
  font-size: 0.86rem;
  letter-spacing: 0.01em;
}

.page-contact .ch-cell__value--addr {
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-contact .ch-cell__use {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--grey);
}

.page-contact .ch-cell--dark {
  background: var(--fir-deep);
  border-left: 3px solid var(--maple);
}

.page-contact .ch-cell__name--light {
  color: var(--sand);
}

.page-contact .ch-cell__dark-title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.4;
  color: #fff;
}

.page-contact .ch-cell__use--light {
  color: rgba(244, 243, 239, 0.76);
}

.page-contact .ch-cell__jump {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 3px;
  font-size: 13px;
  font-weight: 600;
  color: var(--sand);
  text-decoration: none;
  border-bottom: 1px solid rgba(217, 169, 97, 0.55);
}

.page-contact .ch-cell__jump:hover {
  color: #fff;
  border-bottom-color: #fff;
}

/* 02 反馈分类 */
.page-contact .fb-wrap {
  align-items: start;
  row-gap: 24px;
}

.page-contact .fb {
  position: relative;
  background: var(--paper-3);
  border: 1px solid var(--line-strong);
  min-width: 0;
}

.page-contact .fb__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .fb__tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .fb__tab {
  flex: 1 1 33.333%;
  min-width: 108px;
  padding: 14px 8px;
  text-align: center;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--ink-soft);
  cursor: pointer;
  border-right: 1px solid var(--line);
  transition: background 160ms var(--ease), color 160ms var(--ease);
}

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

.page-contact .fb__tab:hover {
  background: var(--paper-2);
}

.page-contact #fb-fix:checked ~ .fb__tabs .fb__tab[for="fb-fix"] {
  background: var(--maple);
  color: #fff;
}

.page-contact #fb-add:checked ~ .fb__tabs .fb__tab[for="fb-add"] {
  background: var(--fir);
  color: #fff;
}

.page-contact #fb-topic:checked ~ .fb__tabs .fb__tab[for="fb-topic"] {
  background: var(--sand);
  color: var(--ink);
}

.page-contact .fb__radio:focus-visible + .fb__radio + .fb__radio + .fb__tabs {
  outline: 2px solid var(--ice);
  outline-offset: 2px;
}

.page-contact .fb__panel {
  display: none;
  padding: 20px 18px 24px;
}

.page-contact #fb-fix:checked ~ .fb__panels #panel-fix,
.page-contact #fb-add:checked ~ .fb__panels #panel-add,
.page-contact #fb-topic:checked ~ .fb__panels #panel-topic {
  display: block;
}

.page-contact .fb__panel h3 {
  margin: 0 0 8px;
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.45;
  padding-left: 12px;
  border-left: 3px solid var(--maple);
}

.page-contact .fb__panel p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-contact .fb__panel ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .fb__panel li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 7px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-contact .fb__panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 1px;
  background: var(--fir);
}

.page-contact .fb-side {
  min-width: 0;
}

.page-contact .fb-side__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  border: 1px solid var(--line-strong);
}

.page-contact .fb-side__note {
  margin-top: 14px;
  padding: 14px 16px;
  background: var(--paper-2);
  border-left: 3px solid var(--ice);
}

.page-contact .fb-side__label {
  margin: 0 0 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--fir);
}

.page-contact .fb-side__note p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* 03 处理路径 */
.page-contact .paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.page-contact .path {
  padding: 20px 18px 22px;
  background: var(--paper-3);
  min-width: 0;
}

.page-contact .path__head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-contact .path__idx {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  flex: none;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--fir);
}

.page-contact .path__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

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

.page-contact .path__steps li {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-contact .path__n {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  font-size: 11px;
  color: var(--fir);
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
}

.page-contact .path__steps b {
  color: var(--ink);
  font-weight: 700;
}

/* 04 技术反馈 */
.page-contact .tech-wrap {
  align-items: start;
  row-gap: 26px;
}

.page-contact .section-head--flat {
  margin-bottom: 14px;
}

.page-contact .tech-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .tech-list li {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 10px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-contact .tech-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .tech-list__n {
  font-size: 11.5px;
  color: var(--maple);
  padding-top: 3px;
}

.page-contact .tech-list b {
  color: var(--ink);
  font-weight: 700;
}

.page-contact .tech-tail {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

.page-contact .tech-tail a,
.page-contact .registry__note a {
  color: var(--fir);
  text-decoration: none;
  border-bottom: 1px solid var(--ice);
}

.page-contact .tech-tail a:hover,
.page-contact .registry__note a:hover {
  color: var(--maple);
  border-bottom-color: var(--maple);
}

.page-contact .tpl {
  background: var(--fir-deep);
  border: 1px solid var(--fir-deep);
  border-top: 3px solid var(--sand);
  padding: 16px 18px 20px;
}

.page-contact .tpl__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--sand);
}

.page-contact .tpl__body {
  margin: 12px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  color: rgba(244, 243, 239, 0.92);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .tpl__note {
  margin: 10px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--grey);
}

/* 05 机构合作 */
.page-contact .coop-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line-strong);
}

.page-contact .coop-item {
  padding: 18px 0 18px 16px;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid var(--paper-2);
  min-width: 0;
}

.page-contact .coop-item h3 {
  margin: 0 0 7px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--fir);
}

.page-contact .coop-item p {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 52ch;
}

.page-contact .coop-mail {
  margin-top: 22px;
  padding: 16px 18px;
  background: var(--paper-2);
  border: 1px solid var(--line-strong);
}

.page-contact .coop-mail__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--maple);
}

.page-contact .coop-mail__format {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .coop-mail__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--grey);
}

/* 06 地址与备案 */
.page-contact .section--tight {
  padding-bottom: clamp(32px, 5vw, 60px);
}

.page-contact .registry {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .registry__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .registry__item:last-child {
  border-bottom: 0;
}

.page-contact .registry__k {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--grey);
}

.page-contact .registry__v {
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  overflow-wrap: anywhere;
}

.page-contact .registry__note {
  margin: 14px 0 0;
  font-size: 12.8px;
  line-height: 1.8;
  color: var(--grey);
}

/* 响应式 */
@media (min-width: 720px) {
  .page-contact .ch-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .registry__item {
    grid-template-columns: 108px 1fr;
    align-items: baseline;
    gap: 12px;
  }

  .page-contact .coop-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--line-strong);
    border: 1px solid var(--line-strong);
    border-top: 1px solid var(--line-strong);
  }

  .page-contact .coop-item {
    padding: 18px 16px 20px;
    border: 0;
    border-left: 0;
    background: var(--paper-3);
  }

  .page-contact .coop-item h3 {
    padding-left: 10px;
    border-left: 3px solid var(--maple);
  }
}

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

@media (min-width: 1080px) {
  .page-contact .ch-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr)) 1.35fr;
  }

  .page-contact .ch-cell {
    padding: 22px 18px 24px;
  }

  .page-contact .ch-cell--dark {
    padding-left: 20px;
  }

  .page-contact .registry {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-contact .registry__item:nth-child(odd) {
    border-right: 1px solid var(--line);
    padding-right: 32px;
  }

  .page-contact .registry__item:nth-last-child(-n+2) {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb__tab {
    transition: none;
  }
}
<<<END>>>
</main>