.page-contact {
  --contact-max: 1020px;
  --card-accent: var(--line);
  background: var(--bg);
  color: var(--white);
  padding: 40px 20px 88px;
}

.page-contact .contact-shell {
  max-width: var(--contact-max);
  margin: 0 auto;
}

/* 面包屑 */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 36px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-contact .breadcrumb__item {
  display: inline-flex;
  align-items: center;
}

.page-contact .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}

.page-contact .breadcrumb__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .breadcrumb__sep {
  color: var(--line);
}

/* 首屏 */
.page-contact .contact-hero {
  padding-bottom: 36px;
  border-bottom: 1px solid var(--line);
}

.page-contact .eyebrow {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact h1 {
  margin: 0 0 22px;
  max-width: 17em;
  font-size: clamp(28px, 6.2vw, 50px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.035em;
  color: var(--white);
}

.page-contact .contact-hero__lede {
  margin: 0 0 34px;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-contact .contact-facts__item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 15px 16px;
  background: var(--panel);
  transition: background var(--t-fast) ease;
}

.page-contact .contact-facts__item:hover {
  background: var(--bg-deep);
}

.page-contact .contact-facts__label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-facts__value {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--cyan);
  word-break: break-all;
}

/* 通栏图 */
.page-contact .contact-banner {
  margin: 44px 0 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-banner figcaption {
  padding: 13px 16px;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

/* 分栏 */
.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
  margin-top: 64px;
}

.page-contact .contact-channels-col {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.page-contact .contact-col-head h2,
.page-contact .contact-guide h2 {
  margin: 0 0 12px;
  font-size: clamp(20px, 3.6vw, 27px);
  font-weight: 800;
  letter-spacing: 0.05em;
  line-height: 1.3;
  color: var(--white);
}

.page-contact .contact-col-head p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-channels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 渠道卡片，高度依次递减 */
.page-contact .channel-card {
  position: relative;
  border: 1px solid var(--line);
  border-left: 3px solid var(--card-accent);
  background: var(--panel);
  transition: border-color var(--t-fast) ease, transform var(--t-fast) ease;
}

.page-contact .channel-card:hover {
  border-top-color: var(--cyan);
  border-right-color: var(--cyan);
  border-bottom-color: var(--cyan);
  transform: translateY(-1px);
}

.page-contact .channel-card--mail {
  --card-accent: var(--cyan);
  padding: 30px 24px;
}

.page-contact .channel-card--phone {
  --card-accent: var(--orange);
  padding: 24px 22px;
}

.page-contact .channel-card--post {
  --card-accent: var(--purple);
  padding: 19px 20px;
}

.page-contact .channel-card__top {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 13px;
}

.page-contact .channel-card__index {
  font-size: 11.5px;
  letter-spacing: 0.22em;
  color: var(--card-accent);
}

.page-contact .channel-card__kind {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .channel-card__value {
  margin: 0 0 13px;
  font-size: clamp(15px, 2.9vw, 20px);
  font-weight: 700;
  line-height: 1.42;
  letter-spacing: 0.01em;
  color: var(--white);
  word-break: break-all;
}

.page-contact .channel-card--mail .channel-card__value {
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 1px dashed var(--cyan-deep);
}

.page-contact .channel-card__value--address {
  font-size: clamp(14px, 2.4vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  word-break: normal;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .channel-card--phone .channel-card__desc,
.page-contact .channel-card--post .channel-card__desc {
  font-size: 13.5px;
}

.page-contact .channel-card__meta {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--cyan-deep);
}

/* 右栏 */
.page-contact .contact-guide {
  display: flex;
  flex-direction: column;
  gap: 34px;
}

.page-contact .contact-guide__figure {
  margin: 0;
  max-width: 340px;
  border: 1px solid var(--line);
  background: var(--panel);
}

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

.page-contact .guide-block p {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .guide-block__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 0;
}

.page-contact .guide-block__links .btn {
  font-size: 13px;
  padding: 9px 16px;
  letter-spacing: 0.04em;
}

/* 回复流程 */
.page-contact .reply-flow__list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .reply-flow__step {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--t-fast) ease;
}

.page-contact .reply-flow__step:hover {
  background: var(--panel);
}

.page-contact .reply-flow__num {
  padding-top: 2px;
  font-size: 12.5px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-contact .reply-flow__title {
  margin: 0 0 5px;
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .reply-flow__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* 写信准备清单 */
.page-contact .prep-note {
  margin-top: 26px;
  border: 1px solid var(--line);
  background: var(--bg-deep);
}

.page-contact .prep-note__head {
  margin: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-contact .prep-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
}

.page-contact .prep-list__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-deep);
}

.page-contact .prep-list__key {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--warn);
}

.page-contact .prep-list__val {
  font-size: 13.5px;
  color: var(--white);
}

/* 页脚上方备注 */
.page-contact .contact-foot-note {
  margin: 56px 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-foot-note__link {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px dashed var(--cyan-deep);
  transition: color var(--t-fast) ease, border-color var(--t-fast) ease;
}

.page-contact .contact-foot-note__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 响应式 */
@media (min-width: 560px) {
  .page-contact {
    padding: 52px 28px 100px;
  }

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

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding: 64px 40px 120px;
  }

  .page-contact .breadcrumb {
    margin-bottom: 48px;
  }

  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
    align-items: start;
    margin-top: 76px;
  }

  .page-contact .contact-guide {
    gap: 40px;
  }

  .page-contact .contact-guide__figure {
    max-width: 100%;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-split {
    gap: 72px;
  }
}
<<<END>>>