.page-contact {
  --pc-hair: 1px solid var(--blueprint);
  --pc-soft: 1px solid rgba(10, 26, 43, 0.14);
  --pc-tint: #E7EDF0;
  --pc-shadow: 14px 14px 0 -1px var(--paper), 14px 14px 0 0 var(--blueprint);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  overflow-x: hidden;
}

.page-contact .pc-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ---------- 面包屑 ---------- */
.page-contact .pc-crumbnav {
  padding-top: 26px;
}
.page-contact .pc-crumbnav .crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--sea);
}
.page-contact .pc-crumbnav .crumbs li:not(:first-child)::before {
  content: "/";
  margin-right: 8px;
  color: var(--index-gray);
}
.page-contact .pc-crumbnav .crumbs li[aria-current="page"] {
  color: var(--index-gray);
}
.page-contact .pc-crumbnav .crumbs a {
  color: var(--sea);
  text-decoration: none;
  border-bottom: 1px solid var(--blueprint);
  transition: color 140ms ease, border-color 140ms ease;
}
.page-contact .pc-crumbnav .crumbs a:hover,
.page-contact .pc-crumbnav .crumbs a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-masthead {
  padding: 22px 0 46px;
}
.page-contact .pc-masthead__inner {
  display: grid;
  gap: 24px;
}
.page-contact .pc-title {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-size: clamp(28px, 7vw, 48px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 20ch;
}
.page-contact .pc-title::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  margin-top: 22px;
  background: var(--orange);
}
.page-contact .pc-masthead__note {
  border-left: 3px solid var(--blueprint);
  padding-left: 18px;
}
.page-contact .pc-masthead__note .body-text {
  margin: 0;
  color: var(--sea);
}

/* ---------- 联络板 ---------- */
.page-contact .pc-board {
  padding: 0 0 64px;
}
.page-contact .pc-board__head {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--sea);
}
.page-contact .pc-board__grid {
  display: grid;
  gap: 20px;
}

.page-contact .pc-board__primary {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  padding: 30px 22px;
}
.page-contact .pc-channel + .pc-channel {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--rail-line);
}
.page-contact .pc-channel__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--celadon);
}
.page-contact .pc-mail {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(16px, 4.6vw, 30px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--paper);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 2px solid var(--orange);
  padding-bottom: 4px;
  transition: color 140ms ease, border-color 140ms ease;
}
.page-contact .pc-phone {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 10vw, 54px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: 0.03em;
  color: var(--paper);
  text-decoration: none;
  transition: color 140ms ease;
}
.page-contact .pc-mail:hover,
.page-contact .pc-mail:focus-visible,
.page-contact .pc-phone:hover,
.page-contact .pc-phone:focus-visible {
  color: var(--orange);
}
.page-contact .pc-channel__hint {
  margin: 14px 0 0;
  max-width: 34ch;
  font-size: 15px;
  line-height: 1.65;
  color: var(--blueprint);
}

.page-contact .pc-copy {
  display: inline-block;
  margin-top: 14px;
  min-height: 44px;
  padding: 11px 16px;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--blueprint);
  background: transparent;
  border: 1px solid var(--rail-line);
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease, background 140ms ease;
}
.page-contact .pc-copy:hover,
.page-contact .pc-copy:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}
.page-contact .pc-copy[data-copied] {
  color: var(--celadon);
  border-color: var(--celadon);
}
.page-contact .pc-copy--side {
  margin-top: 4px;
  color: var(--sea);
  border-color: var(--blueprint);
}
.page-contact .pc-copy--side:hover,
.page-contact .pc-copy--side:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

.page-contact .pc-board__side {
  background: #fff;
  border: var(--pc-soft);
  display: flex;
  flex-direction: column;
}
.page-contact .pc-sidecard {
  padding: 26px 22px;
  border-bottom: 1px solid rgba(10, 26, 43, 0.09);
}
.page-contact .pc-sidecard:last-child {
  border-bottom: 0;
}
.page-contact .pc-sidecard__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--sea);
}
.page-contact .pc-addr {
  margin: 14px 0 10px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
}
.page-contact .pc-addr__line {
  display: block;
}
.page-contact .pc-sidecard__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--sea);
}
.page-contact .pc-hours {
  margin: 14px 0 10px;
  font-size: 20px;
  font-weight: 600;
  color: var(--ink);
}
.page-contact .pc-hours .pc-mono {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--teal-deep);
}

/* ---------- 回复节奏 ---------- */
.page-contact .pc-pace {
  background: var(--pc-tint);
  border-top: var(--pc-hair);
  border-bottom: var(--pc-hair);
  padding: 48px 0 52px;
}
.page-contact .pc-h2 {
  margin: 12px 0 0;
  font-family: var(--font-title);
  font-size: clamp(23px, 4.6vw, 34px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-contact .pc-lede {
  margin: 16px 0 0;
  max-width: 48ch;
  color: var(--sea);
}
.page-contact .pc-pace__grid {
  display: grid;
  gap: 0;
  margin-top: 32px;
  border-top: var(--pc-hair);
}
.page-contact .pc-pace__cell {
  padding: 22px 0 20px;
  border-bottom: var(--pc-hair);
}
.page-contact .pc-pace__cell:last-child {
  border-bottom: 0;
}
.page-contact .pc-pace__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(24px, 6.4vw, 36px);
  font-weight: 600;
  line-height: 1.15;
  color: var(--sea);
}
.page-contact .pc-pace__cell:first-child .pc-pace__value {
  color: var(--orange);
}
.page-contact .pc-pace__label {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--sea);
}

/* ---------- 问题分流 ---------- */
.page-contact .pc-routing {
  padding: 56px 0 60px;
}
.page-contact .pc-route {
  display: grid;
  gap: 28px;
  margin-top: 34px;
}
.page-contact .pc-route__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-contact .pc-route__link {
  display: grid;
  grid-template-columns: 44px 1fr;
  column-gap: 14px;
  row-gap: 4px;
  align-items: baseline;
  padding: 18px 16px;
  background: #fff;
  border: var(--pc-hair);
  text-decoration: none;
  color: inherit;
  transition: border-color 140ms ease, background 140ms ease;
}
.page-contact .pc-route__link:hover,
.page-contact .pc-route__link:focus-visible {
  border-color: var(--orange);
  background: var(--orange-pale);
}
.page-contact .pc-route__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--celadon);
}
.page-contact .pc-route__link:hover .pc-route__num,
.page-contact .pc-route__link:focus-visible .pc-route__num {
  color: var(--orange);
}
.page-contact .pc-route__name {
  grid-column: 2;
  grid-row: 1;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}
.page-contact .pc-route__meta {
  grid-column: 2;
  grid-row: 2;
  font-size: 15px;
  line-height: 1.6;
  color: var(--sea);
}
.page-contact .pc-route__fig {
  margin: 0;
  padding: 12px;
  background: #fff;
  border: var(--pc-hair);
}
.page-contact .pc-route__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .pc-route__fig .media__caption {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--index-gray);
}

/* ---------- 来信建议 ---------- */
.page-contact .pc-letter {
  background: var(--ink);
  color: var(--paper);
  padding: 52px 0 56px;
}
.page-contact .pc-letter .kicker {
  color: var(--celadon);
}
.page-contact .pc-letter .pc-h2 {
  color: var(--paper);
}
.page-contact .pc-letter__grid {
  display: grid;
  gap: 32px;
}
.page-contact .pc-letter__steps {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}
.page-contact .pc-letter__steps li {
  display: grid;
  grid-template-columns: 40px 1fr;
  column-gap: 14px;
  align-items: start;
  padding: 16px 0;
  border-top: 1px solid var(--rail-line);
}
.page-contact .pc-letter__steps li:last-child {
  border-bottom: 1px solid var(--rail-line);
}
.page-contact .pc-letter__step {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  color: var(--orange);
  padding-top: 2px;
}
.page-contact .pc-letter__text {
  font-size: 16px;
  line-height: 1.7;
  color: var(--paper);
}
.page-contact .pc-letter__tail {
  margin: 24px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--blueprint);
}
.page-contact .pc-letter__tail .link-u {
  color: var(--orange);
}
.page-contact .pc-letter__fig {
  margin: 0;
  padding: 12px;
  background: rgba(243, 245, 241, 0.06);
  border: 1px solid var(--rail-line);
}
.page-contact .pc-letter__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .pc-letter__fig .media__caption {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--blueprint);
}

/* ---------- 合作与校对 ---------- */
.page-contact .pc-partner {
  padding: 56px 0 24px;
}
.page-contact .pc-partner__cols {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}
.page-contact .pc-partner__col .body-text {
  margin: 0;
  color: var(--ink);
}
.page-contact .pc-partner .link-u {
  color: var(--sea);
}

/* ---------- 收束 ---------- */
.page-contact .pc-signoff {
  padding: 40px 0 72px;
}
.page-contact .pc-signoff__rule {
  height: 2px;
  width: 100%;
  background: var(--orange);
}
.page-contact .pc-signoff__row {
  display: grid;
  gap: 20px;
  margin-top: 26px;
}
.page-contact .pc-signoff__text {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(18px, 4.2vw, 24px);
  line-height: 1.5;
  color: var(--ink);
}
.page-contact .pc-signoff__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-contact .pc-signoff__actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .pc-pace__grid {
    grid-template-columns: repeat(3, 1fr);
    border-bottom: var(--pc-hair);
  }
  .page-contact .pc-pace__cell {
    padding: 26px 22px;
    border-bottom: 0;
    border-right: var(--pc-hair);
  }
  .page-contact .pc-pace__cell:first-child {
    padding-left: 0;
  }
  .page-contact .pc-pace__cell:last-child {
    padding-right: 0;
    border-right: 0;
  }
  .page-contact .pc-partner__cols {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .page-contact .pc-signoff__row {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-masthead {
    padding: 34px 0 56px;
  }
  .page-contact .pc-masthead__inner {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 48px;
  }
  .page-contact .pc-title {
    max-width: 16ch;
  }
  .page-contact .pc-masthead__note {
    padding-left: 24px;
  }

  .page-contact .pc-board__grid {
    grid-template-columns: 7fr 5fr;
    border: var(--pc-soft);
    box-shadow: var(--pc-shadow);
    margin-bottom: 14px;
  }
  .page-contact .pc-board__primary {
    border: 0;
    padding: 44px 40px;
  }
  .page-contact .pc-board__side {
    border: 0;
    border-left: 1px solid rgba(10, 26, 43, 0.14);
  }
  .page-contact .pc-sidecard {
    padding: 32px 30px;
  }

  .page-contact .pc-pace {
    padding: 60px 0 64px;
  }

  .page-contact .pc-routing {
    padding: 72px 0 76px;
  }
  .page-contact .pc-route {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    margin-top: 40px;
    align-items: start;
  }

  .page-contact .pc-letter {
    padding: 72px 0 76px;
  }
  .page-contact .pc-letter__grid {
    grid-template-columns: 6fr 5fr;
    gap: 56px;
    align-items: start;
  }

  .page-contact .pc-partner {
    padding: 72px 0 32px;
  }

  .page-contact .pc-signoff {
    padding: 56px 0 88px;
  }
}

@media (min-width: 1200px) {
  .page-contact .pc-board__primary {
    padding: 52px 48px;
  }
  .page-contact .pc-board__side .pc-sidecard {
    padding: 34px 34px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-mail,
  .page-contact .pc-phone,
  .page-contact .pc-copy,
  .page-contact .pc-route__link,
  .page-contact .pc-route__num,
  .page-contact .pc-crumbnav .crumbs a {
    transition: none;
  }
}
<<<END>>>