.page-contact {
  --pc-line: var(--line-light);
  --pc-line-dark: var(--line-dark);
  background: var(--paper);
  color: var(--ink);
}

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

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

/* ── 首屏 ─────────────────────────────── */
.page-contact .contact-hero {
  position: relative;
  background: var(--indigo);
  color: var(--paper);
  padding: calc(var(--header-h) + 48px) 0 64px;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: var(--line-dark-soft);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: 22px;
}

.page-contact .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.page-contact .crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--slate);
}

.page-contact .crumbs li + li::before {
  content: "/";
  color: var(--line-dark);
}

.page-contact .crumbs a {
  color: var(--slate);
  text-decoration: none;
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--whistle);
}

.page-contact .crumbs li[aria-current="page"] {
  color: var(--paper);
}

.page-contact h1 {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7.2vw, 66px);
  line-height: 1.02;
  letter-spacing: -.01em;
}

.page-contact .lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(16px, 2.2vw, 17.5px);
  line-height: 1.75;
  color: var(--dim-on-dark);
}

.page-contact .section--paper .lede,
.page-contact .section--paper .prose {
  color: var(--dim-on-light);
}

/* ── 框景联络窗口 ─────────────────────── */
.page-contact .contact-frame {
  position: relative;
  margin-top: 12px;
  overflow: hidden;
  background: var(--ink);
  isolation: isolate;
}

.page-contact .contact-frame__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-contact .contact-frame__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .3;
  filter: saturate(.55) contrast(1.15) brightness(.72);
}

.page-contact .contact-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(160deg, rgba(16, 26, 51, .92) 0%, rgba(10, 12, 18, .82) 62%, rgba(122, 42, 28, .5) 100%);
}

.page-contact .contact-frame__items {
  display: grid;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-channel {
  padding: 24px 20px 26px;
  border-top: 1px solid var(--pc-line-dark);
}

.page-contact .contact-channel:first-child {
  border-top: 0;
}

.page-contact .contact-channel__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--whistle);
}

.page-contact .contact-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(15px, 3.6vw, 19px);
  line-height: 1.5;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-channel__value--addr {
  font-size: clamp(14px, 2.4vw, 16px);
  font-weight: 500;
  color: var(--dim-on-dark);
}

.page-contact .contact-channel__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--ochre-soft);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-channel__value a:hover,
.page-contact .contact-channel__value a:focus-visible {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

.page-contact .contact-channel__value a:focus-visible {
  outline: 2px solid var(--whistle);
  outline-offset: 3px;
}

.page-contact .contact-frame__note {
  margin: 0;
  padding: 15px 20px;
  border-top: 1px solid var(--pc-line-dark);
  background: rgba(10, 12, 18, .45);
  font-size: 13px;
  line-height: 1.6;
  color: var(--dim-on-dark);
}

@media (min-width: 760px) {
  .page-contact .contact-hero {
    padding: calc(var(--header-h) + 72px) 0 96px;
  }

  .page-contact .contact-frame__items {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-channel {
    border-top: 0;
    border-left: 1px solid var(--pc-line-dark);
    padding: 30px 26px 34px;
  }

  .page-contact .contact-channel:first-child {
    border-left: 0;
  }

  .page-contact .contact-frame__note {
    padding: 16px 26px;
  }
}

/* ── 通用分栏：左窄刻度 / 右宽内容 ────── */
.page-contact .pc-split {
  align-items: start;
  row-gap: 20px;
}

.page-contact .pc-rail .eyebrow {
  margin: 0 0 10px;
  color: var(--ochre);
}

.page-contact .section--night .pc-rail .eyebrow {
  color: var(--ochre-soft);
}

.page-contact .pc-rail h2,
.page-contact .mail-grid h2,
.page-contact .wrap--narrow h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.4vw, 36px);
  line-height: 1.12;
  letter-spacing: -.01em;
}

.page-contact .pc-body {
  display: grid;
  gap: 22px;
}

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

  .page-contact .pc-split {
    column-gap: 40px;
  }

  .page-contact .pc-body {
    gap: 28px;
  }
}

/* ── 24 小时刻度条 ───────────────────── */
.page-contact .hours-bar {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
  background: var(--pc-line);
}

.page-contact .hours-bar__seg {
  position: relative;
  padding: 16px 0 18px;
  background: var(--paper);
  border-top: 2px solid transparent;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .hours-bar__seg::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 10px;
  height: 2px;
  background: var(--slate);
  transition: background var(--dur) var(--ease), width var(--dur) var(--ease);
}

.page-contact .hours-bar__seg:hover {
  background: rgba(242, 193, 78, .1);
  border-top-color: var(--whistle);
}

.page-contact .hours-bar__seg:hover::before {
  width: 46px;
  background: var(--whistle);
}

.page-contact .hours-bar__t {
  display: block;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .02em;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

.page-contact .hours-bar__d {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--dim-on-light);
}

@media (min-width: 780px) {
  .page-contact .hours-bar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    background: transparent;
  }

  .page-contact .hours-bar__seg {
    padding: 18px 18px 20px;
    border-left: 1px solid var(--pc-line);
  }

  .page-contact .hours-bar__seg:first-child {
    border-left: 0;
    padding-left: 0;
  }
}

/* ── 纠错流程 ────────────────────────── */
.page-contact .fix-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line-dark);
}

.page-contact .fix-step {
  border-bottom: 1px solid var(--pc-line-dark);
}

.page-contact .fix-step summary {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

.page-contact .fix-step summary::-webkit-details-marker {
  display: none;
}

.page-contact .fix-step summary:focus-visible {
  outline: 2px solid var(--whistle);
  outline-offset: 3px;
}

.page-contact .fix-step__n {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--slate);
  transition: color var(--dur) var(--ease);
}

.page-contact .fix-step__t {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 3.4vw, 22px);
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .fix-step summary:hover .fix-step__t {
  color: var(--ochre-soft);
}

.page-contact .fix-step details[open] .fix-step__n {
  color: var(--whistle);
}

.page-contact .fix-step details[open] .fix-step__t::after {
  content: " —";
  color: var(--ochre-soft);
}

.page-contact .fix-step__body {
  padding: 0 0 20px 32px;
  max-width: 68ch;
}

.page-contact .fix-step__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--dim-on-dark);
}

/* ── 合作方向 ────────────────────────── */
.page-contact .coop-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .coop-item {
  display: grid;
  gap: 8px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .coop-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 3.2vw, 21px);
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-contact .coop-item__title::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 2px;
  margin-right: 12px;
  vertical-align: middle;
  background: var(--ochre);
}

.page-contact .coop-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--dim-on-light);
}

@media (min-width: 780px) {
  .page-contact .coop-item {
    grid-template-columns: minmax(180px, 240px) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
}

/* ── 来函与通信 ──────────────────────── */
.page-contact .mail-grid {
  row-gap: 36px;
  align-items: start;
}

.page-contact .mail-grid .prose {
  margin: 22px 0 0;
  max-width: 54ch;
}

.page-contact .mail-info {
  margin: 26px 0 0;
}

.page-contact .mail-info__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--pc-line-dark);
}

.page-contact .mail-info__row:last-child {
  border-bottom: 1px solid var(--pc-line-dark);
}

.page-contact .mail-info dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .mail-info dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14.5px;
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .mail-figure {
  margin: 0;
}

.page-contact .mail-figure .media {
  overflow: hidden;
  border: 1px solid var(--pc-line-dark);
}

.page-contact .mail-figure .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.8) contrast(1.05);
}

.page-contact .mail-figure .figure-caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate);
}

@media (min-width: 780px) {
  .page-contact .mail-info__row {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

/* ── 自助入口 ────────────────────────── */
.page-contact .wrap--narrow .prose {
  margin: 20px 0 0;
}

.page-contact .fast-links {
  display: grid;
  margin-top: 30px;
  border-top: 1px solid var(--pc-line);
}

.page-contact .fast-link {
  display: grid;
  gap: 5px;
  padding: 18px 12px 18px 0;
  border-bottom: 1px solid var(--pc-line);
  text-decoration: none;
  color: inherit;
  transition: padding-left var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .fast-link:hover,
.page-contact .fast-link:focus-visible {
  padding-left: 16px;
  box-shadow: inset 3px 0 0 var(--ochre);
  background: rgba(179, 64, 42, .05);
}

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

.page-contact .fast-link__k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 3.2vw, 21px);
  letter-spacing: -.01em;
  color: var(--ink);
  transition: color var(--dur) var(--ease);
}

.page-contact .fast-link:hover .fast-link__k {
  color: var(--ochre);
}

.page-contact .fast-link__v {
  font-size: 14px;
  line-height: 1.6;
  color: var(--dim-on-light);
}

@media (min-width: 720px) {
  .page-contact .fast-link {
    grid-template-columns: minmax(140px, 200px) minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

/* ── 深色分区内的文字微调 ─────────────── */
.page-contact .section--night .muted {
  color: var(--slate);
}

.page-contact .section--paper .muted {
  color: var(--slate);
}
<<<END>>>