.page-contact {
  background: var(--deep);
  color: var(--mist);
}

/* 首屏 */
.page-contact .contact-intro {
  position: relative;
  padding-top: clamp(2.25rem, 6vw, 4.5rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-intro::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: .16;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 82%);
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

.page-contact .contact-intro .container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-intro__title {
  margin: clamp(.9rem, 2vw, 1.4rem) 0 clamp(.9rem, 2vw, 1.3rem);
  max-width: 15ch;
  color: var(--mist);
}

.page-contact .contact-intro__lede {
  max-width: 60ch;
  color: var(--silver);
}

/* 镜像双栏 */
.page-contact .contact-mirror-section {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .contact-mirror {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-contact .contact-mirror__left,
.page-contact .contact-mirror__right {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  min-width: 0;
}

.page-contact .contact-mirror__heading {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
}

/* 信号图 */
.page-contact .contact-signal {
  margin: .4rem 0 .2rem;
}

.page-contact .contact-signal .figure__frame {
  border: 1px solid var(--line);
  background: var(--night);
  overflow: hidden;
  aspect-ratio: 12 / 7;
}

.page-contact .contact-signal .figure__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* 邮箱主体块 */
.page-contact .contact-mail-block {
  background: var(--slate);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  padding: clamp(1.1rem, 3vw, 1.6rem);
}

.page-contact .contact-mail-block__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--silver);
}

.page-contact .contact-mail-block__value {
  display: inline-block;
  max-width: 100%;
  position: relative;
  margin: .55rem 0 .6rem;
  padding-bottom: .3rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 4vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--mist);
  overflow-wrap: anywhere;
  transition: color var(--dur) var(--ease);
}

.page-contact .contact-mail-block__value::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--cyan);
  transition: width .28s var(--ease);
}

.page-contact .contact-mail-block:hover .contact-mail-block__value::after,
.page-contact .contact-mail-block:focus-within .contact-mail-block__value::after {
  width: 100%;
}

.page-contact .contact-mail-block__note {
  margin: 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--silver);
}

/* 电话与地址 */
.page-contact .contact-channels {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-contact .contact-channels__item {
  display: grid;
  gap: .3rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-channels__key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--silver);
}

.page-contact .contact-channels__val {
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.4vw, 1.18rem);
  letter-spacing: .01em;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .contact-channels__note {
  margin: .15rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--silver);
  max-width: 46ch;
}

/* 邮件四段式 */
.page-contact .contact-mail-guide__intro {
  margin: 0;
  max-width: 48ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .mail-template {
  margin: .3rem 0 0;
  padding: 0 0 0 clamp(.85rem, 2.5vw, 1.15rem);
  list-style: none;
  border-left: 1px solid var(--line);
}

.page-contact .mail-template__item {
  display: grid;
  grid-template-columns: 2.3rem minmax(0, 1fr);
  gap: .1rem .55rem;
  padding: .9rem 0;
}

.page-contact .mail-template__item + .mail-template__item {
  border-top: 1px solid rgba(42, 67, 88, .55);
}

.page-contact .mail-template__no {
  padding-top: .28rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .mail-template__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--mist);
}

.page-contact .mail-template__text {
  grid-column: 2;
  margin: .3rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--silver);
}

/* 结构示意图 */
.page-contact .contact-template-figure {
  margin: .6rem 0 0;
}

.page-contact .contact-template-figure .figure__frame {
  border: 1px solid var(--line);
  background: var(--slate);
  overflow: hidden;
}

.page-contact .contact-template-figure .figure__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .contact-template-figure .figure__caption {
  margin-top: .55rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--silver);
}

/* 响应时段通栏 */
.page-contact .contact-window {
  background: var(--orange);
  color: var(--deep);
  padding: clamp(1.6rem, 4vw, 2.6rem) 0;
  border-top: 1px solid var(--orange);
  border-bottom: 1px solid var(--orange);
}

.page-contact .contact-window__inner {
  display: grid;
  gap: .9rem;
}

.page-contact .contact-window__key {
  margin: 0 0 .3rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(5, 18, 31, .74);
}

.page-contact .contact-window__big {
  margin: 0;
  font-size: clamp(1.5rem, 4.6vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--deep);
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-window__text {
  margin: 0;
  max-width: 64ch;
  font-size: .95rem;
  line-height: 1.85;
  color: #05121F;
}

/* 电话预约与寄送 */
.page-contact .contact-procedure {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .contact-procedure__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .contact-procedure__note {
  margin: .8rem 0 0;
  max-width: 32ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .contact-step + .contact-step {
  margin-top: 1.8rem;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
}

.page-contact .contact-step__title {
  margin: 0 0 .7rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mist);
}

.page-contact .contact-step p {
  margin: 0 0 .7rem;
  font-size: .96rem;
  line-height: 1.9;
  color: var(--silver);
  max-width: 62ch;
}

.page-contact .contact-step__list {
  display: grid;
  gap: .5rem;
  margin: .3rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-step__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-contact .contact-step__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: .45rem;
  height: 1px;
  background: var(--cyan);
}

/* 站内去向 */
.page-contact .contact-next-section {
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
  border-top: 1px solid var(--line);
}

.page-contact .contact-next__intro {
  margin: .7rem 0 1.4rem;
  max-width: 56ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .contact-next {
  display: grid;
  gap: .9rem;
}

.page-contact .contact-next__link {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: 1.15rem 1.1rem;
  background: var(--slate);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .contact-next__link:hover,
.page-contact .contact-next__link:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .contact-next__name {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--mist);
}

.page-contact .contact-next__desc {
  font-size: .9rem;
  line-height: 1.8;
  color: var(--silver);
}

/* 响应式 */
@media (min-width: 760px) {
  .page-contact .contact-next {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-channels__item {
    grid-template-columns: 8rem minmax(0, 1fr);
    align-items: baseline;
    column-gap: 1.2rem;
  }

  .page-contact .contact-channels__note {
    grid-column: 2;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-window__inner {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.4fr);
    align-items: center;
    gap: 2.5rem;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-mirror {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-contact .contact-procedure__grid {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-next__link,
  .page-contact .contact-mail-block__value,
  .page-contact .contact-mail-block__value::after {
    transition: none;
  }

  .page-contact .contact-next__link:hover,
  .page-contact .contact-next__link:focus-visible {
    transform: none;
  }
}
<<<END>>>