.page-contact {
  --contact-measure: 66ch;
  --contact-gap: clamp(16px, 3vw, 32px);
  background-color: var(--ink-900);
  color: var(--silver);
  font-family: var(--font-body);
  font-size: calc(16px * var(--font-scale));
  line-height: 1.75;
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  color: var(--paper);
}

.page-contact .mono {
  font-family: var(--font-mono);
}

/* ---------- 首屏框景 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(30px, 5vw, 56px);
  background-image: linear-gradient(180deg, var(--ink-800), var(--ink-900));
  border-bottom: 1px solid var(--ink-700);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 10px;
  background-image: repeating-linear-gradient(90deg, var(--ink-600) 0 1px, transparent 1px 13px);
  opacity: 0.85;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  align-items: start;
}

.page-contact .contact-hero__panel {
  position: relative;
  border: 1px solid var(--ink-700);
  background-color: rgba(18, 34, 56, 0.55);
  padding: clamp(20px, 3vw, 34px);
}

.page-contact .contact-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 14px;
  height: 14px;
  background-color: var(--amber);
}

.page-contact .contact-hero__panel::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 14px;
  height: 14px;
  border-top: 1px solid var(--red);
  border-left: 1px solid var(--red);
}

.page-contact h1 {
  margin: 10px 0 16px;
  font-size: clamp(27px, 6vw, 44px);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.22;
  max-width: 26ch;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: var(--contact-measure);
  color: var(--silver);
  font-size: calc(17px * var(--font-scale));
}

.page-contact .contact-index {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: clamp(14px, 2vw, 18px) 0 0;
  border-top: 1px dashed var(--ink-700);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.page-contact .contact-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 2px;
  color: var(--silver-dim);
  font-size: calc(14px * var(--font-scale));
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-index__link:hover,
.page-contact .contact-index__link:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

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

.page-contact .contact-hero__aside {
  display: grid;
  gap: 14px;
}

.page-contact .stamp {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 5px 12px;
  padding: 12px 14px;
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--amber);
  background-color: var(--ink-800);
}

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

.page-contact .stamp__value {
  color: var(--amber-soft);
  font-size: 13px;
  text-align: right;
  word-break: break-all;
}

.page-contact .contact-hero__aside .note {
  margin: 0;
  font-size: 13px;
}

/* ---------- 通用区块 ---------- */
.page-contact .section {
  padding: clamp(34px, 5.5vw, 64px) 0;
  border-top: 1px solid var(--ink-700);
}

.page-contact .contact-channels {
  border-top: 0;
}

.page-contact .section__head {
  display: grid;
  gap: 6px;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-contact .section__title {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 30px);
  font-weight: 900;
  letter-spacing: 0.05em;
  line-height: 1.32;
  max-width: 28ch;
}

.page-contact .contact-lead {
  margin: 0 0 clamp(18px, 3vw, 24px);
  max-width: var(--contact-measure);
  color: var(--silver);
}

.page-contact .contact-caveat {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: var(--contact-measure);
  padding-left: 14px;
  border-left: 2px solid var(--silver-dark);
  color: var(--silver-dim);
  font-size: calc(14px * var(--font-scale));
}

/* ---------- 图片框 ---------- */
.page-contact .frame {
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 10px;
  border: 1px solid var(--ink-700);
  background-color: var(--ink-800);
}

.page-contact .frame__media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--ink-700);
}

.page-contact .frame__caption {
  margin-top: 9px;
  color: var(--silver-dim);
  font-size: 12px;
  letter-spacing: 0.08em;
  line-height: 1.6;
}

.page-contact .frame--wide {
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  padding: 20px 20px 22px;
  border: 1px solid var(--ink-700);
  background-color: var(--ink-800);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel-card--amber {
  border-left: 3px solid var(--amber);
}

.page-contact .channel-card--teal {
  border-left: 3px solid var(--teal);
}

.page-contact .channel-card__code {
  margin: 0;
  color: var(--silver-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-contact .channel-card__title {
  margin: 8px 0 12px;
  font-size: calc(18px * var(--font-scale));
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.45;
}

.page-contact .channel-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: calc(15px * var(--font-scale));
  color: var(--silver);
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 16px;
  line-height: 1.7;
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background-color: var(--amber);
}

.page-contact .channel-card--teal .channel-card__list li::before {
  background-color: var(--teal-soft);
}

.page-contact .channel-card__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ink-700);
  color: var(--silver-dim);
  font-size: calc(13px * var(--font-scale));
  line-height: 1.7;
}

.page-contact .boundary {
  margin-top: clamp(20px, 3vw, 28px);
  padding: 14px 18px;
  border-left: 3px solid var(--red);
  background-color: var(--ink-800);
  color: var(--silver-dim);
  font-size: calc(14px * var(--font-scale));
}

.page-contact .boundary p {
  margin: 0;
  max-width: var(--contact-measure);
}

/* ---------- 分类对照表 ---------- */
.page-contact .route-table {
  border: 1px solid var(--ink-700);
  background-color: var(--ink-800);
}

.page-contact .route-table__head {
  display: none;
}

.page-contact .route-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 16px 18px;
  border-left: 3px solid var(--ink-600);
  transition: background-color var(--dur) var(--ease);
}

.page-contact .route-row + .route-row {
  border-top: 1px solid var(--ink-700);
}

.page-contact .route-row--amber { border-left-color: var(--amber); }
.page-contact .route-row--teal { border-left-color: var(--teal-soft); }
.page-contact .route-row--silver { border-left-color: var(--silver-dark); }
.page-contact .route-row--red { border-left-color: var(--red); }

.page-contact .route-row:hover,
.page-contact .route-row:focus-within {
  background-color: rgba(29, 51, 80, 0.5);
}

.page-contact .route-cell {
  color: var(--silver);
  font-size: calc(15px * var(--font-scale));
}

.page-contact .route-cell--type {
  color: var(--paper);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.page-contact .route-cell__label {
  display: block;
  margin-bottom: 3px;
  color: var(--silver-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-contact .route-subject {
  display: inline-block;
  padding: 4px 9px;
  border: 1px dashed var(--ink-600);
  background-color: rgba(11, 22, 34, 0.6);
  color: var(--silver-dim);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  word-break: break-word;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .route-subject--plain {
  border-style: solid;
}

.page-contact .route-row:hover .route-subject,
.page-contact .route-row:focus-within .route-subject {
  color: var(--amber-soft);
  border-color: var(--amber);
}

/* ---------- 准备清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--ink-700);
  background-color: var(--ink-800);
}

.page-contact .checklist__item + .checklist__item {
  border-top: 1px solid var(--ink-700);
}

.page-contact .check-item {
  position: relative;
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: start;
  padding: 15px 18px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.page-contact .check-item:hover {
  background-color: rgba(29, 51, 80, 0.5);
}

.page-contact .check-item__input {
  position: absolute;
  top: 18px;
  left: 18px;
  width: 18px;
  height: 18px;
  margin: 0;
  opacity: 0;
}

.page-contact .check-item__box {
  grid-column: 1;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--silver-dark);
  background-color: rgba(11, 22, 34, 0.5);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .check-item__input:checked + .check-item__box {
  background-color: var(--amber);
  border-color: var(--amber);
}

.page-contact .check-item__input:checked + .check-item__box::after {
  content: "";
  display: block;
  width: 8px;
  height: 4px;
  margin: 4px 0 0 3px;
  border-left: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(-45deg);
}

.page-contact .check-item__input:focus-visible + .check-item__box {
  outline: 2px solid var(--amber-soft);
  outline-offset: 2px;
}

.page-contact .check-item__num {
  grid-column: 2;
  padding-top: 3px;
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-contact .check-item__text {
  grid-column: 3;
  color: var(--silver);
  font-size: calc(15px * var(--font-scale));
  line-height: 1.72;
}

.page-contact .check-item__input:checked ~ .check-item__text {
  color: var(--silver-dim);
}

/* ---------- 处理顺序 ---------- */
.page-contact .timing-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 2.6vw, 24px);
  max-width: var(--contact-measure);
}

.page-contact .timing-list__item {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 0 12px;
  padding-bottom: clamp(16px, 2.6vw, 22px);
  border-bottom: 1px solid var(--ink-700);
}

.page-contact .timing-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .timing-list__num {
  grid-row: 1 / span 2;
  color: var(--amber);
  font-size: 13px;
  letter-spacing: 0.08em;
  padding-top: 5px;
  border-top: 2px solid var(--amber);
}

.page-contact .timing-list__title {
  margin: 0 0 4px;
  font-size: calc(17px * var(--font-scale));
  font-weight: 700;
  letter-spacing: 0.03em;
  line-height: 1.5;
}

.page-contact .timing-list__item p {
  margin: 0;
  color: var(--silver);
  font-size: calc(15px * var(--font-scale));
}

/* ---------- 联络登记（纸白块） ---------- */
.page-contact .registry {
  background-color: var(--paper);
  color: var(--ink-900);
  border: 1px solid var(--ink-700);
  padding: clamp(18px, 3vw, 32px);
}

.page-contact .registry .contact-list {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
}

.page-contact .registry .contact-list__key {
  margin: 0;
  padding: 14px 0 2px;
  border-top: 1px solid rgba(11, 22, 34, 0.16);
  color: #3E5064;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
}

.page-contact .registry .contact-list__value {
  margin: 0;
  padding: 0 0 14px;
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: calc(15px * var(--font-scale));
  line-height: 1.7;
  word-break: break-word;
}

.page-contact .registry .contact-list__value a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .registry .contact-list__value a:hover,
.page-contact .registry .contact-list__value a:focus-visible {
  color: #8A5C0C;
  border-bottom-color: #8A5C0C;
}

.page-contact .registry__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(11, 22, 34, 0.25);
  color: #3E5064;
  font-size: calc(13.5px * var(--font-scale));
  line-height: 1.8;
}

/* ---------- 勘误与摘录 ---------- */
.page-contact .erratum-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .erratum-card {
  padding: 20px 20px 22px;
  border: 1px solid var(--ink-700);
  background-color: var(--ink-800);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .erratum-card--amber { border-left: 3px solid var(--amber); }
.page-contact .erratum-card--teal { border-left: 3px solid var(--teal); }

.page-contact .erratum-card__code {
  margin: 0;
  color: var(--silver-dim);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-contact .erratum-card__title {
  margin: 8px 0 10px;
  font-size: calc(17px * var(--font-scale));
  font-weight: 700;
  letter-spacing: 0.03em;
}

.page-contact .erratum-card p {
  margin: 0;
  color: var(--silver);
  font-size: calc(15px * var(--font-scale));
}

.page-contact .contact-related {
  margin-top: clamp(26px, 4vw, 40px);
  padding-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--ink-700);
}

.page-contact .contact-related__lead {
  margin: 0 0 14px;
  color: var(--silver-dim);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-contact .contact-related__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .contact-related__link {
  display: inline-block;
  padding: 9px 15px;
  border: 1px solid var(--ink-700);
  color: var(--silver);
  font-size: calc(14px * var(--font-scale));
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-contact .contact-related__link:hover,
.page-contact .contact-related__link:focus-visible {
  color: var(--amber-soft);
  border-color: var(--amber);
  background-color: rgba(18, 34, 56, 0.6);
}

/* ---------- 焦点与动效 ---------- */
.page-contact a:focus-visible {
  outline: 2px solid var(--amber-soft);
  outline-offset: 2px;
}

@media (min-width: 701px) {
  .page-contact .channel-grid,
  .page-contact .erratum-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-contact .channel-card:nth-child(2),
  .page-contact .erratum-card:nth-child(2) {
    margin-top: 20px;
  }

  .page-contact .registry .contact-list {
    grid-template-columns: 132px minmax(0, 1fr);
    column-gap: 20px;
  }

  .page-contact .registry .contact-list__key,
  .page-contact .registry .contact-list__value {
    padding-top: 14px;
    border-top: 1px solid rgba(11, 22, 34, 0.16);
  }

  .page-contact .registry .contact-list__value {
    padding-bottom: 14px;
  }

  .page-contact .registry .contact-list__key {
    padding-bottom: 14px;
  }
}

@media (min-width: 901px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) 216px;
  }

  .page-contact .route-table__head,
  .page-contact .route-row {
    display: grid;
    grid-template-columns: 1.02fr 0.66fr 1.5fr 1.3fr;
    gap: 18px;
    align-items: start;
  }

  .page-contact .route-table__head {
    padding: 12px 18px;
    background-color: var(--ink-700);
    color: var(--silver-dim);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
  }

  .page-contact .route-row {
    padding: 15px 18px;
  }

  .page-contact .route-cell__label {
    display: none;
  }

  .page-contact .route-subject {
    font-size: 12.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card:hover,
  .page-contact .erratum-card:hover {
    transform: none;
  }

  .page-contact .channel-card,
  .page-contact .erratum-card,
  .page-contact .contact-index__link,
  .page-contact .route-subject,
  .page-contact .contact-related__link {
    transition: none;
  }
}
<<<END>>>