.page-contact {
  --contact-muted: #66788F;
  --contact-line: rgba(14, 42, 71, .14);
  background: var(--silver-white);
  color: var(--night-blue);
}

/* ---------- Hero ---------- */
.page-contact__hero {
  position: relative;
  background: var(--lake-blue);
  color: var(--silver-white);
  padding: calc(var(--header-h) + 2.25rem) 0 2.5rem;
  overflow: hidden;
}

.page-contact__hero::before {
  content: "";
  position: absolute;
  width: 64%;
  height: 108%;
  right: -18%;
  top: -4%;
  background: linear-gradient(115deg, transparent 48%, rgba(255, 90, 54, .82) 48.5%, rgba(255, 90, 54, .82) 100%);
  transform: skewX(-10deg);
  z-index: 0;
}

.page-contact__hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: var(--heat-orange);
  z-index: 2;
}

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

.page-contact__hero .breadcrumb {
  margin-bottom: 2.25rem;
}

.page-contact__hero .breadcrumb__link {
  color: var(--ice-blue);
}

.page-contact__hero .breadcrumb__link:hover {
  color: var(--silver-white);
}

.page-contact__hero .breadcrumb__current {
  color: var(--silver-white);
}

.page-contact__hero-grid {
  display: grid;
  gap: 1.75rem;
  align-items: end;
}

.page-contact__kicker {
  margin-bottom: .75rem;
}

.page-contact__hero-copy h1 {
  margin: 0 0 1.25rem;
  font-family: var(--font-display), 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 2.4rem;
  line-height: 1.06;
  letter-spacing: .01em;
  max-width: 12em;
}

.page-contact__hero-lead {
  margin: 0;
  max-width: 44em;
  color: var(--ice-blue);
  font-size: 1rem;
  line-height: 1.8;
}

.page-contact__hero-coord {
  border: 1px solid rgba(255, 255, 255, .3);
  border-left: 4px solid var(--heat-orange);
  padding: 1rem 1.25rem;
  max-width: 240px;
  display: grid;
  gap: .25rem;
}

.page-contact__coord-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--silver-white);
}

.page-contact__coord-name {
  color: var(--ice-blue);
  font-size: .875rem;
}

/* ---------- Channels 区 ---------- */
.page-contact__channels {
  padding: 3rem 0 1rem;
}

.page-contact__channels-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.page-contact__help-first {
  background: var(--night-blue);
  color: var(--silver-white);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  box-shadow: 8px 8px 0 rgba(14, 42, 71, .1);
}

.page-contact__help-first::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 36px;
  height: 36px;
  background: var(--heat-orange);
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.page-contact__help-first .section-kicker {
  color: var(--ice-blue);
}

.page-contact__help-first h2,
.page-contact__board-head h2,
.page-contact__promise h2,
.page-contact__letter h2,
.page-contact__export h2 {
  margin: .5rem 0 1rem;
  font-family: var(--font-display), 'Noto Sans SC', sans-serif;
  font-weight: 700;
  line-height: 1.15;
}

.page-contact__help-first h2 {
  color: var(--silver-white);
  font-size: 1.6rem;
}

.page-contact__help-lead {
  margin: 0 0 1.25rem;
  color: var(--ice-blue);
  font-size: .9375rem;
  line-height: 1.7;
}

.page-contact__faq-tags {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-contact__faq-tags li {
  background: rgba(184, 205, 224, .14);
  border: 1px solid rgba(184, 205, 224, .22);
  color: var(--ice-blue);
  font-size: .8125rem;
  padding: .3rem .7rem;
}

.page-contact__help-stats {
  margin: 0 0 1.5rem;
  font-size: .875rem;
  color: var(--ice-blue);
}

.page-contact__help-stats strong {
  color: var(--silver-white);
  font-family: var(--font-mono);
}

.page-contact__help-first .btn-ghost {
  border-color: rgba(255, 255, 255, .5);
  color: var(--silver-white);
}

.page-contact__help-first .btn-ghost:hover {
  background: var(--silver-white);
  border-color: var(--silver-white);
  color: var(--night-blue);
}

.page-contact__channel-board {
  padding: 0;
}

.page-contact__board-head {
  margin-bottom: 1.5rem;
  max-width: 46em;
}

.page-contact__board-head h2 {
  font-size: 2rem;
  color: var(--lake-blue);
}

.page-contact__board-head p:last-child {
  color: var(--contact-muted);
  font-size: .9375rem;
}

.page-contact__channel-list {
  display: grid;
  gap: .75rem;
}

.page-contact__channel {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  column-gap: .75rem;
  align-items: baseline;
  background: var(--cloud-white);
  border-left: 3px solid transparent;
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}

.page-contact__channel:hover,
.page-contact__channel:focus-visible {
  border-left-color: var(--heat-orange);
  transform: translateX(6px);
  box-shadow: var(--shadow-header);
}

.page-contact__channel-num {
  grid-row: span 3;
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--heat-orange);
  transform: translateY(2px);
}

.page-contact__channel-type {
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--lake-blue);
}

.page-contact__channel-value {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--night-blue);
  word-break: break-word;
}

.page-contact__channel-note {
  color: var(--contact-muted);
  font-size: .875rem;
}

.page-contact__channel--address {
  cursor: default;
}

.page-contact__channels-figure {
  margin: 1.5rem 0 0;
}

.page-contact__channels-figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--snow-gray);
}

.page-contact__channels-figure figcaption {
  padding: .75rem 0 0;
  font-size: .875rem;
  color: var(--contact-muted);
  line-height: 1.6;
}

/* ---------- Landscape ---------- */
.page-contact__landscape {
  background: linear-gradient(155deg, var(--night-blue) 0%, var(--lake-blue) 56%, rgba(255, 90, 54, .26) 135%);
  color: var(--silver-white);
  padding: 3rem 0;
}

.page-contact__landscape-grid {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-contact__landscape-figure {
  margin: 0;
}

.page-contact__landscape-figure img {
  width: 100%;
  height: auto;
  display: block;
  box-shadow: var(--shadow-header);
}

.page-contact__landscape-figure figcaption {
  padding: .75rem 0 0;
  color: var(--ice-blue);
  font-size: .875rem;
  line-height: 1.6;
}

.page-contact__landscape-copy .print-label {
  color: var(--heat-orange);
}

.page-contact__landscape-copy p {
  margin: 0 0 1rem;
  color: #DFE9F2;
  line-height: 1.8;
}

.page-contact__landscape .btn-ghost {
  border-color: rgba(255, 255, 255, .55);
  color: var(--silver-white);
}

.page-contact__landscape .btn-ghost:hover {
  background: var(--silver-white);
  border-color: var(--silver-white);
  color: var(--night-blue);
}

/* ---------- Promise ---------- */
.page-contact__promise {
  background: var(--heat-orange);
  color: #FFFFFF;
  padding: 3.5rem 1.25rem;
  text-align: center;
  clip-path: polygon(0 5%, 100% 0, 100% 95%, 0 100%);
}

.page-contact__promise .section-kicker {
  color: rgba(255, 255, 255, .88);
}

.page-contact__promise h2 {
  font-size: 2rem;
  color: #FFFFFF;
}

.page-contact__promise p:last-child {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, .95);
}

.page-contact__promise-mail {
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
}

.page-contact__promise-mail:hover {
  color: var(--night-blue);
}

/* ---------- Bottom ---------- */
.page-contact__bottom {
  padding: 3.5rem 0 4rem;
  background: var(--silver-white);
}

.page-contact__bottom-grid {
  display: grid;
  gap: 2.5rem;
}

.page-contact__letter h2,
.page-contact__export h2 {
  font-size: 1.75rem;
  color: var(--lake-blue);
}

.page-contact__letter > p {
  color: var(--contact-muted);
  margin: 0 0 .75rem;
}

.page-contact__postal-address {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--night-blue);
  border-left: 3px solid var(--heat-orange);
  background: rgba(184, 205, 224, .18);
  padding: 1rem 1.25rem;
  margin: 1rem 0 0;
}

.page-contact__letter-note {
  margin: 1rem 0 1.25rem !important;
}

.page-contact__map-svg {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 1.5rem;
  border: 1px solid var(--snow-gray);
  background: var(--silver-white);
}

.page-contact__map-svg text {
  font-family: var(--font-body);
}

.page-contact__export > p {
  color: var(--contact-muted);
  margin: 0 0 1.25rem;
}

.page-contact__steps {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: .25rem;
}

.page-contact__step {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: .75rem;
  align-items: baseline;
  border-top: 1px solid var(--contact-line);
  padding: .9rem 0;
}

.page-contact__step-num {
  font-family: var(--font-mono);
  color: var(--heat-orange);
  font-weight: 700;
  font-size: .875rem;
}

.page-contact__step-body {
  line-height: 1.7;
}

.page-contact__export-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-contact__hero {
    padding-bottom: 3.5rem;
  }

  .page-contact__hero-grid {
    grid-template-columns: 1fr auto;
    gap: 2rem;
  }

  .page-contact__channels-grid {
    grid-template-columns: 320px 1fr;
    gap: 3rem;
  }

  .page-contact__landscape-grid {
    grid-template-columns: 1.12fr .88fr;
    gap: 3rem;
  }

  .page-contact__bottom-grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .page-contact__channel-list {
    gap: 1rem;
  }

  .page-contact__channel {
    padding: 1.4rem 1.5rem;
    column-gap: 1rem;
  }

  .page-contact__channel-value {
    font-size: 1.25rem;
  }
}

@media (min-width: 1080px) {
  .page-contact__hero {
    padding-top: calc(var(--header-h) + 4rem);
    padding-bottom: 4.5rem;
  }

  .page-contact__hero-copy h1 {
    font-size: 4.25rem;
  }

  .page-contact__hero-lead {
    font-size: 1.0625rem;
    max-width: 36em;
  }

  .page-contact__channels {
    padding-top: 5rem;
  }

  .page-contact__help-first {
    padding: 2rem;
  }
}