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

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 132px 0 72px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: .38;
  pointer-events: none;
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 90% at 50% 20%, rgba(53, 240, 208, .14), transparent 62%),
              linear-gradient(180deg, rgba(7, 11, 30, .35), var(--ink) 88%);
}

.page-contact .contact-hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-contact .contact-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 44px;
}

.page-contact .contact-crumb__link {
  color: var(--muted);
  text-decoration: none;
  transition: color .24s var(--ease);
}

.page-contact .contact-crumb__link:hover,
.page-contact .contact-crumb__link:focus-visible {
  color: var(--cyan);
}

.page-contact .contact-crumb__here {
  color: var(--cyan-soft);
}

.page-contact .contact-hero__eyebrow {
  color: var(--cyan);
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8vw, 52px);
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 0 0 20px;
  max-width: 18ch;
}

.page-contact .contact-hero__lede {
  color: var(--muted);
  max-width: 56ch;
  margin: 0 0 48px;
}

.page-contact .contact-mail {
  position: relative;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, var(--panel) 0%, var(--panel-deep) 100%);
  padding: 28px 24px 30px;
  box-shadow: var(--shadow-lift);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .contact-mail::before,
.page-contact .contact-mail::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--cyan);
  opacity: .8;
}

.page-contact .contact-mail::before {
  top: 12px;
  left: 12px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: 6px;
}

.page-contact .contact-mail::after {
  bottom: 12px;
  right: 12px;
  border-left: 0;
  border-top: 0;
  border-bottom-right-radius: 6px;
}

.page-contact .contact-mail__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-mail__addr {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 6.4vw, 44px);
  line-height: 1.1;
  letter-spacing: -.035em;
  color: var(--text);
  text-decoration: none;
  word-break: break-all;
  transition: color .24s var(--ease);
}

.page-contact .contact-mail__addr:hover,
.page-contact .contact-mail__addr:focus-visible {
  color: var(--cyan-soft);
}

.page-contact .contact-mail__copy {
  align-self: flex-start;
}

.page-contact .contact-mail__hint {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  min-height: 16px;
  letter-spacing: .04em;
}

.page-contact .contact-hero__note {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--muted);
  margin: 22px 0 0;
}

/* 联络信息卡 */
.page-contact .contact-cards__head {
  margin-bottom: 32px;
}

.page-contact .contact-cards__head .h-section {
  margin: 10px 0 0;
  font-size: clamp(24px, 5.6vw, 36px);
  line-height: 1.2;
}

.page-contact .contact-cards__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .contact-pill {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  padding: 26px 22px 28px;
  transition: border-color .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}

.page-contact .contact-pill:hover,
.page-contact .contact-pill:focus-within {
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: var(--glow-cyan);
}

.page-contact .contact-pill__tag {
  margin-bottom: 16px;
  display: inline-block;
}

.page-contact .contact-pill__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  margin: 0 0 12px;
}

.page-contact .contact-pill__value {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--cyan-soft);
  margin: 0 0 12px;
  word-break: break-word;
}

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

.page-contact .contact-slant {
  margin: 0 auto;
  max-width: 1240px;
}

/* 来函指引 */
.page-contact .contact-letters__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-contact .contact-letters__lede {
  margin: 16px 0 0;
}

.page-contact .contact-letters__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .contact-letter-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-contact .contact-letter {
  display: flex;
  gap: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--panel-deep);
  padding: 22px 20px;
  cursor: default;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}

.page-contact .contact-letter:hover,
.page-contact .contact-letter:focus-visible,
.page-contact .contact-letter:focus-within {
  border-color: var(--cyan);
  background: var(--panel);
  outline: none;
}

.page-contact .contact-letter__index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--amber);
  padding-top: 4px;
  flex: 0 0 auto;
}

.page-contact .contact-letter__body {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .contact-letter__title {
  margin: 0 0 8px;
  font-size: 19px;
}

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

.page-contact .contact-letter__tips {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .36s var(--ease), opacity .28s var(--ease), margin-top .28s var(--ease);
}

.page-contact .contact-letter:hover .contact-letter__tips,
.page-contact .contact-letter:focus-within .contact-letter__tips,
.page-contact .contact-letter:focus .contact-letter__tips {
  max-height: 260px;
  opacity: 1;
  margin-top: 14px;
}

.page-contact .contact-letter__tips-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0 0 8px;
}

.page-contact .contact-letter__tips ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text);
  font-size: 14px;
  line-height: 1.75;
}

.page-contact .contact-letter__tips li::marker {
  color: var(--cyan);
}

.page-contact .contact-letters__more {
  grid-column: 1 / -1;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  margin: 8px 0 0;
  padding-top: 20px;
  border-top: 1px dashed var(--line);
}

.page-contact .contact-letters__more a,
.page-contact .contact-registry__link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, .35);
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .contact-letters__more a:hover,
.page-contact .contact-letters__more a:focus-visible,
.page-contact .contact-registry__link a:hover,
.page-contact .contact-registry__link a:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

/* 站点信息 */
.page-contact .contact-registry {
  background: var(--ink-deep);
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-registry__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-contact .contact-registry__text .h-section {
  margin: 10px 0 16px;
  font-size: clamp(24px, 5.6vw, 34px);
}

.page-contact .contact-registry__link {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.page-contact .contact-registry__list {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel-deep);
}

.page-contact .contact-registry__row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-registry__row:last-child {
  border-bottom: 0;
}

.page-contact .contact-registry__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-registry__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.page-contact .contact-registry__mono {
  font-family: var(--font-mono);
  font-size: 13px !important;
  color: var(--cyan-soft) !important;
}

@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding: 152px 0 96px;
  }

  .page-contact .contact-mail {
    padding: 40px 40px 42px;
  }

  .page-contact .contact-cards__row {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .contact-letter {
    padding: 26px 26px;
  }

  .page-contact .contact-registry__row {
    flex-direction: row;
    align-items: baseline;
    gap: 24px;
  }

  .page-contact .contact-registry__row dt {
    flex: 0 0 120px;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-hero__inner {
    padding-right: 12%;
  }

  .page-contact .contact-mail {
    max-width: 880px;
    padding: 48px 52px 46px;
  }

  .page-contact .contact-letters__inner {
    grid-template-columns: 1.35fr .9fr;
    grid-template-areas:
      "intro media"
      "list media"
      "more more";
    column-gap: 64px;
    row-gap: 28px;
    align-items: start;
  }

  .page-contact .contact-letters__intro {
    grid-area: intro;
  }

  .page-contact .contact-letters__media {
    grid-area: media;
    position: sticky;
    top: 120px;
  }

  .page-contact .contact-letter-list {
    grid-area: list;
  }

  .page-contact .contact-letters__more {
    grid-area: more;
  }

  .page-contact .contact-registry__inner {
    grid-template-columns: 1.1fr .9fr;
    column-gap: 64px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-pill,
  .page-contact .contact-letter,
  .page-contact .contact-letter__tips,
  .page-contact .contact-mail__addr {
    transition: opacity .2s linear;
  }

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