.page-contact {
  --contact-cut: 28px;
  background: var(--color-cream);
  color: var(--color-ink);
  overflow-x: hidden;
}

/* 上下文提示条 */
.page-contact__context {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-lg) var(--gutter) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.page-contact__context-note {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--color-stone);
  border-left: 3px solid var(--color-orange);
  padding-left: var(--space-sm);
  margin: 0;
}

/* 扉页标题 */
.contact-entry {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-xl) var(--gutter) var(--space-lg);
}

.contact-entry__kicker {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-terra);
  margin: 0 0 var(--space-sm);
}

.contact-entry__title {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 4.6vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: .01em;
  text-transform: uppercase;
  color: var(--color-ink);
  margin: 0 0 var(--space-md);
  max-width: 16ch;
}

.contact-entry__title-sub {
  display: block;
  color: var(--color-terra);
  font-size: .78em;
  letter-spacing: .02em;
  margin-top: .2em;
}

.contact-entry__lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-stone);
  max-width: 46ch;
  margin: 0;
}

/* 两栏扉页主体 */
.contact-spread {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) var(--space-xl);
}

/* 左栏：联系方式深色面板 */
.contact-spread__main {
  position: relative;
  background: var(--color-forest);
  color: var(--color-cream);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%);
  padding: clamp(1.25rem, 5vw, 4rem);
  min-height: 460px;
  display: flex;
  align-items: flex-end;
}

.contact-spread__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .15;
  pointer-events: none;
}

.contact-spread__brand {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 255, 255, .12);
  pointer-events: none;
  user-select: none;
  z-index: 1;
}

.contact-channels {
  position: relative;
  z-index: 1;
  width: 100%;
}

.contact-channels__title {
  font-family: var(--font-display);
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--color-white);
  margin: 0 0 var(--space-sm);
}

.contact-channels__hint {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: rgba(245, 241, 232, .68);
  margin: 0 0 var(--space-lg);
}

.contact-channel-item {
  border-top: 1px solid rgba(245, 241, 232, .22);
  padding: var(--space-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.contact-channel-item__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--color-orange);
}

.contact-channel-item__label::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--color-orange);
  margin-right: .5em;
  vertical-align: middle;
}

.contact-channel-item__value {
  position: relative;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 5.2vw, 1.95rem);
  line-height: 1.4;
  color: var(--color-white);
  text-decoration: none;
  word-break: break-all;
  padding-right: 1.6em;
  transition: color var(--transition);
}

.contact-channel-item__value::after {
  content: '↗';
  font-family: var(--font-body);
  font-size: .5em;
  line-height: 1;
  color: var(--color-orange);
  position: absolute;
  top: .28em;
  right: 0;
  opacity: 0;
  transform: translate(3px, -3px);
  transition: opacity var(--transition), transform var(--transition);
}

.contact-channel-item__value:hover::after,
.contact-channel-item__value:focus-visible::after {
  opacity: 1;
  transform: translate(0, 0);
}

.contact-channel-item__value:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 4px;
}

/* 右栏：地址与索引 */
.contact-spread__side {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.page-contact .media.contact-spread__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  margin: 0;
  background: var(--color-moss);
  box-shadow: var(--shadow-1);
}

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

.page-contact .card.card--cut.contact-address {
  background: var(--color-white);
  border-left: 6px solid var(--color-terra);
  margin: 0;
  padding: var(--space-lg);
  box-shadow: var(--shadow-1);
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-address:hover {
  transform: translateY(-4px) rotate(-1.5deg);
  box-shadow: var(--shadow-2);
}

.contact-address__tag {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-terra);
  margin: 0 0 var(--space-xs);
}

.contact-address__title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  text-transform: uppercase;
  color: var(--color-ink);
  margin: 0 0 var(--space-sm);
}

.contact-address__line {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-ink);
  margin: 0 0 var(--space-md);
}

.contact-address__note {
  font-size: .85rem;
  line-height: 1.6;
  color: var(--color-stone);
  margin: 0;
}

/* 渠道用途与办公时间 */
.contact-usage {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-xl) var(--gutter);
}

.contact-usage__intro {
  margin-bottom: var(--space-lg);
}

.contact-usage__kicker {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin: 0 0 var(--space-xs);
}

.contact-usage__heading {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  text-transform: uppercase;
  color: var(--color-ink);
  margin: 0;
}

.contact-usage__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.page-contact .data-panel.contact-usage__item {
  margin: 0;
  padding: var(--space-lg);
  border-top: 4px solid var(--color-moss);
}

.page-contact .data-panel--dark.contact-usage__item {
  border-top-color: var(--color-orange);
}

.contact-usage__item-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  text-transform: uppercase;
  margin: 0 0 var(--space-sm);
  color: var(--color-ink);
}

.page-contact .data-panel--dark .contact-usage__item-title {
  color: var(--color-white);
}

.contact-usage__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact-usage__list li {
  font-size: .95rem;
  line-height: 1.65;
  color: var(--color-ink);
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-orange);
  margin: 0;
}

.contact-usage__list strong {
  font-family: var(--font-mono);
  font-weight: 600;
  word-break: break-all;
}

.contact-usage__time {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: var(--color-white);
  margin: 0 0 var(--space-md);
}

.contact-usage__schedule {
  margin: 0;
  padding: 0;
}

.contact-usage__schedule-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
  border-top: 1px solid rgba(245, 241, 232, .18);
  padding: .55rem 0;
  margin: 0;
}

.contact-usage__schedule-row:last-child {
  border-bottom: 1px solid rgba(245, 241, 232, .18);
}

.contact-usage__schedule-row dt {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: rgba(245, 241, 232, .62);
}

.contact-usage__schedule-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .88rem;
  color: var(--color-white);
  text-align: right;
}

/* 获取帮助 */
.contact-help {
  max-width: var(--container);
  margin: 0 auto;
  padding: var(--space-xl) var(--gutter) calc(var(--space-xl) * 1.4);
}

.contact-help__track {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.contact-help__dash {
  flex: 1;
  border-top: 2px dashed var(--color-terra);
}

.contact-help__arrow {
  font-family: var(--font-mono);
  font-size: 2rem;
  line-height: 1;
  color: var(--color-terra);
  transform: rotate(-28deg);
}

.contact-help__kicker {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-terra);
  margin: 0 0 var(--space-xs);
}

.contact-help__title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  text-transform: uppercase;
  color: var(--color-ink);
  margin: 0 0 var(--space-md);
}

.contact-help__lead {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-stone);
  max-width: 58ch;
  margin: 0 0 var(--space-lg);
}

.contact-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.contact-help__btn {
  text-transform: uppercase;
  letter-spacing: .06em;
}

.contact-help__back {
  margin-top: var(--space-lg);
  font-size: .92rem;
  line-height: 1.7;
  color: var(--color-stone);
}

.contact-help__backlink {
  position: relative;
  color: var(--color-terra);
  text-decoration: none;
  margin: 0 .15em;
}

.contact-help__backlink::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.contact-help__backlink:hover::after,
.contact-help__backlink:focus-visible::after {
  transform: scaleX(1);
}

.contact-help__backlink:focus-visible {
  outline: 2px solid var(--color-orange);
  outline-offset: 4px;
}

/* 桌面端栅格 */
@media (min-width: 800px) {
  .contact-usage__grid {
    grid-template-columns: 1fr 1fr;
  }
}

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