.page-contact {
  --pc-gap: clamp(24px, 4vw, 48px);
  --pc-slip-shadow: 6px 6px 0 0 var(--mist), 0 22px 38px -30px rgba(21, 23, 27, 0.6);
  background-color: var(--paper);
  color: var(--ink);
  padding-bottom: clamp(48px, 8vw, 96px);
}

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

/* ---------- 首屏声明带 ---------- */

.page-contact .contact-lead {
  padding-top: calc(var(--header-h) + clamp(28px, 7vw, 72px));
  padding-bottom: clamp(20px, 4vw, 40px);
}

.page-contact .contact-lead__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 7.5vw, 72px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.page-contact .contact-lead__lede {
  max-width: 62ch;
  margin: 20px 0 0;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-contact .contact-lead__aside {
  max-width: 58ch;
  margin: 18px 0 0;
  padding: 10px 0 10px 16px;
  border-left: 2px solid var(--card-yellow);
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 区块节奏与标题行 ---------- */

.page-contact .section--tight {
  padding-block: clamp(32px, 5vw, 56px);
}

.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--mist);
}

.page-contact .section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.page-contact .section-head__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 联系方式 ---------- */

.page-contact .channels__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

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

.page-contact .channel {
  padding: 18px 0 20px;
  border-bottom: 1px solid var(--mist);
  transition: background-color var(--t-base);
}

.page-contact .channel__key {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-contact .channel__key::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background-color: var(--gobi);
  vertical-align: 1px;
  transition: background-color var(--t-base);
}

.page-contact .channel:hover .channel__key::before {
  background-color: var(--card-yellow);
}

.page-contact .channel__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.4vw, 21px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  color: var(--ink);
}

.page-contact .channel__val--plain {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.9vw, 18px);
  line-height: 1.7;
  letter-spacing: 0;
}

.page-contact .channel__note {
  margin: 8px 0 0;
  max-width: 46ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .channels__figure {
  margin: 0;
}

/* ---------- 勘误提交卡 ---------- */

.page-contact .slip {
  position: relative;
  max-width: 82ch;
  padding: clamp(22px, 4vw, 40px);
  background-color: var(--paper-deep);
  border: 1px solid var(--ink);
  box-shadow: var(--pc-slip-shadow);
}

.page-contact .slip__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gobi);
}

.page-contact .slip__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.page-contact .slip__lede {
  margin: 12px 0 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-contact .slip__list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-contact .slip__list > li {
  padding-top: 14px;
  border-top: 1px solid var(--mist);
}

.page-contact .slip__item-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--gobi-deep);
}

.page-contact .slip__item-desc {
  margin: 4px 0 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .slip__disclosure {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--mist);
}

.page-contact .slip__disclosure .disclosure__body p {
  margin: 0;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 自查清单 ---------- */

.page-contact .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
}

.page-contact .check {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  padding-left: 14px;
  border-left: 3px solid var(--turf);
}

.page-contact .check__mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--turf);
}

.page-contact .check__mark::after {
  content: "";
  width: 7px;
  height: 11px;
  border-right: 2px solid var(--turf);
  border-bottom: 2px solid var(--turf);
  transform: rotate(45deg) translate(-1px, -2px);
}

.page-contact .check__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.005em;
}

.page-contact .check__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 引用与合作 ---------- */

.page-contact .citation__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .citation__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .cite-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--mist);
}

.page-contact .cite-list > li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: 12px 0;
  border-bottom: 1px solid var(--mist);
}

.page-contact .cite-list__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gobi);
}

.page-contact .cite-list__val {
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .citation__foot {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 13px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .citation__aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .citation__aside .plate {
  display: block;
  text-decoration: none;
  color: var(--ink);
}

.page-contact .citation__aside .plate__head {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
}

.page-contact .citation__aside .plate__body {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 备案信息 ---------- */

.page-contact .registry__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .registry__list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--mist);
}

.page-contact .registry__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--mist);
}

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

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

.page-contact .registry__item dd.mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: -0.005em;
  color: var(--ink);
}

/* ---------- 收束宽幅视觉带 ---------- */

.page-contact .closing-band {
  margin: clamp(44px, 7vw, 84px) auto 0;
  max-width: var(--wrap-wide);
  padding-inline: var(--gutter);
}

.page-contact .closing-band img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1400 / 600;
  object-fit: cover;
  border: 1px solid var(--mist);
  filter: saturate(0.82) contrast(1.04);
}

.page-contact .closing-band__caption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--slate);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .cite-list > li {
    grid-template-columns: minmax(6em, auto) minmax(0, 1fr);
    gap: 4px 18px;
  }

  .page-contact .registry__item {
    grid-template-columns: minmax(9em, auto) minmax(0, 1fr);
    gap: 4px 24px;
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-contact .check-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 2.6vw, 34px);
  }
}

@media (min-width: 960px) {
  .page-contact .channels__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }

  .page-contact .citation__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-contact .contact-lead__lede {
    margin-top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel__key::before {
    transition: background-color var(--t-base);
  }
}
</final CSS>