.page-contact {
  --ct-gap: clamp(1rem, 2.6vw, 1.6rem);
  --ct-orange-ink: #9E4A12;
  --ct-paper-dim: rgba(20, 32, 43, 0.72);
  background-color: var(--c-deep);
  color: var(--c-text);
  font-family: var(--font-body);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

/* ---------- 面包屑 ---------- */
.page-contact .contact-crumb {
  padding-top: clamp(0.9rem, 2.4vw, 1.4rem);
}

.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--c-text-mute);
}

.page-contact .breadcrumb__list a {
  color: var(--c-text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

.page-contact .breadcrumb__list a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-contact .breadcrumb__item[aria-current="page"] {
  color: var(--c-text);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(1.3rem, 3.4vw, 2.3rem) clamp(1.8rem, 4.6vw, 3.2rem);
  border-bottom: 1px solid var(--c-line);
  background-image:
    linear-gradient(to right, rgba(36, 69, 92, 0.5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(36, 69, 92, 0.26) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: right top;
}

.page-contact .contact-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.4rem);
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
    column-gap: clamp(2rem, 6vw, 5rem);
  }
}

.page-contact .contact-hero__meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-contact .contact-hero__meta::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--c-cyan);
  flex: none;
}

.page-contact .contact-hero__title {
  margin: 0.6rem 0 0.95rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.8rem, 5.6vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--c-text);
  max-width: 22ch;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.78;
  color: var(--c-text-dim);
}

.page-contact .contact-hero__coords {
  margin: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .contact-hero__coord {
  display: grid;
  grid-template-columns: minmax(76px, auto) minmax(0, 1fr);
  gap: 0.85rem;
  align-items: baseline;
  padding: 0.62rem 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .contact-hero__coord dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--c-text-mute);
}

.page-contact .contact-hero__coord dd {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-text);
}

/* ---------- 通用章节间距 ---------- */
.page-contact .section {
  padding-block: clamp(2.2rem, 6vw, 4rem);
}

.page-contact .section--flush {
  padding-bottom: clamp(2.4rem, 6vw, 4.4rem);
}

.page-contact .section__desc {
  max-width: 64ch;
}

/* ---------- 01 联系渠道 ---------- */
.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
}

@media (min-width: 880px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: stretch;
  }
}

.page-contact .contact-block {
  position: relative;
  padding: clamp(1.15rem, 2.8vw, 1.9rem);
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(18, 58, 82, 0.55), rgba(10, 36, 54, 0.15));
}

.page-contact .contact-block::before,
.page-contact .contact-block::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}

.page-contact .contact-block::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--c-orange);
  border-left: 2px solid var(--c-orange);
}

.page-contact .contact-block::after {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--c-orange);
  border-bottom: 2px solid var(--c-orange);
}

.page-contact .contact-block--mail {
  border-color: rgba(63, 227, 210, 0.55);
  background-image: linear-gradient(180deg, rgba(18, 58, 82, 0.75), rgba(10, 36, 54, 0.25));
}

.page-contact .contact-block--mail::before,
.page-contact .contact-block--mail::after {
  border-color: var(--c-cyan);
  border-width: 2px;
}

.page-contact .contact-block--mail:focus-within {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-contact .contact-block--muted {
  background: var(--c-mist);
  border-color: var(--c-mist);
  color: var(--c-paper-ink);
}

.page-contact .contact-block--muted::before,
.page-contact .contact-block--muted::after {
  border-color: rgba(20, 32, 43, 0.45);
}

.page-contact .contact-block__label {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-orange);
}

.page-contact .contact-block--muted .contact-block__label {
  color: var(--ct-orange-ink);
}

.page-contact .contact-block__title {
  margin: 0 0 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: inherit;
}

.page-contact .contact-block__value {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: clamp(1.02rem, 2.6vw, 1.45rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
  word-break: break-word;
}

.page-contact .contact-block__value a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 227, 210, 0.45);
  padding-bottom: 2px;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .contact-block__value a:hover {
  background-color: rgba(63, 227, 210, 0.1);
  border-bottom-color: var(--c-cyan);
}

.page-contact .contact-block__value a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-contact .contact-block__value--plain {
  color: inherit;
  font-weight: 600;
  font-size: clamp(0.98rem, 2.2vw, 1.18rem);
}

.page-contact .contact-block__note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--c-text-dim);
}

.page-contact .contact-block--muted .contact-block__note {
  color: var(--ct-paper-dim);
}

.page-contact .contact-block__list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(63, 227, 210, 0.22);
}

.page-contact .contact-block__list li {
  position: relative;
  padding: 0.5rem 0 0.5rem 1.1rem;
  font-size: 0.9rem;
  line-height: 1.68;
  color: var(--c-text-dim);
  border-bottom: 1px solid rgba(36, 69, 92, 0.7);
}

.page-contact .contact-block__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05rem;
  width: 7px;
  height: 1px;
  background: var(--c-cyan);
}

.page-contact .contact-channels__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--c-line);
  aspect-ratio: 3 / 2;
  min-height: 200px;
}

.page-contact .contact-channels__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.04);
}

.page-contact .contact-channels__pairs {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--ct-gap);
  margin-top: var(--ct-gap);
}

@media (min-width: 760px) {
  .page-contact .contact-channels__pairs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 02 分流表格 ---------- */
.page-contact .contact-routes__caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--c-text-mute);
}

.page-contact .contact-routes__table {
  min-width: 640px;
}

.page-contact .contact-routes__table tbody tr {
  transition: background-color var(--t-fast) var(--ease);
}

.page-contact .contact-routes__table tbody tr:hover {
  background-color: var(--c-mid);
}

.page-contact .contact-routes__table tbody th[scope="row"] {
  font-weight: 600;
  color: var(--c-text);
  transition: color var(--t-fast) var(--ease);
  white-space: nowrap;
}

.page-contact .contact-routes__table tbody tr:hover th[scope="row"] {
  color: var(--c-cyan);
}

.page-contact .contact-routes__go {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 227, 210, 0.4);
  padding-bottom: 1px;
  white-space: nowrap;
  transition: transform var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .contact-routes__go::after {
  content: "→";
}

.page-contact .contact-routes__go:hover {
  transform: translateX(3px);
  border-bottom-color: var(--c-cyan);
}

.page-contact .contact-routes__go:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-contact .contact-routes__media {
  position: relative;
  margin: clamp(1.4rem, 3.4vw, 2.2rem) 0 0;
  overflow: hidden;
  border: 1px solid var(--c-line);
  aspect-ratio: 2 / 1;
}

.page-contact .contact-routes__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.8) brightness(0.92);
}

/* ---------- 03 纸张叠层 ---------- */
.page-contact .contact-sheet {
  position: relative;
  padding: clamp(1.3rem, 3.6vw, 2.6rem);
  background: var(--c-paper);
  color: var(--c-paper-ink);
  border: 1px solid rgba(20, 32, 43, 0.3);
  box-shadow: 10px 10px 0 rgba(36, 69, 92, 0.5);
}

.page-contact .contact-sheet .section__num {
  color: var(--ct-orange-ink);
}

.page-contact .contact-sheet .section__title {
  color: var(--c-paper-ink);
}

.page-contact .contact-sheet .section__desc {
  color: var(--ct-paper-dim);
}

.page-contact .contact-prepare__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.3rem, 3.4vw, 2.4rem);
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

@media (min-width: 880px) {
  .page-contact .contact-prepare__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }
}

.page-contact .contact-prepare__prose p {
  margin: 0 0 0.9rem;
  font-size: 0.96rem;
  line-height: 1.82;
  color: var(--ct-paper-dim);
}

.page-contact .contact-prepare__prose p:last-child {
  margin-bottom: 0;
}

.page-contact .contact-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: rgba(20, 32, 43, 0.18);
  border: 1px solid rgba(20, 32, 43, 0.18);
}

.page-contact .contact-checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.75rem;
  align-items: start;
  padding: 0.85rem 0.95rem;
  background: var(--c-paper);
  transition: background-color var(--t-fast) var(--ease);
}

.page-contact .contact-checklist__item:hover {
  background: var(--c-mist);
}

.page-contact .contact-checklist__box {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  border: 1px solid rgba(20, 32, 43, 0.7);
  flex: none;
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-contact .contact-checklist__box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(42deg) scale(0.4);
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .contact-checklist__item:hover .contact-checklist__box {
  border-color: var(--c-paper-ink);
  background: rgba(63, 227, 210, 0.14);
}

.page-contact .contact-checklist__item:hover .contact-checklist__box::after {
  opacity: 1;
  transform: rotate(42deg) scale(1);
}

.page-contact .contact-checklist__text {
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--ct-paper-dim);
}

.page-contact .contact-checklist__text strong {
  display: block;
  margin-bottom: 0.15rem;
  font-weight: 600;
  color: var(--c-paper-ink);
}

/* ---------- 04 回复节奏 ---------- */
.page-contact .contact-reply__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--c-line);
  counter-reset: none;
}

.page-contact .contact-reply__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(0.9rem, 3vw, 2rem);
  padding: clamp(1rem, 2.6vw, 1.5rem) 0;
  border-bottom: 1px solid var(--c-line);
  transition: background-color var(--t-fast) var(--ease);
}

.page-contact .contact-reply__step:hover {
  background-color: rgba(18, 58, 82, 0.42);
}

.page-contact .contact-reply__idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  padding-top: 0.28rem;
}

.page-contact .contact-reply__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.1vw, 1.18rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--c-text);
}

.page-contact .contact-reply__body p {
  margin: 0;
  max-width: 70ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: var(--c-text-dim);
}

.page-contact .contact-reply__note {
  margin: clamp(1.3rem, 3vw, 2rem) 0 0;
  padding-left: clamp(0.9rem, 2.4vw, 1.4rem);
  border-left: 2px solid var(--c-orange);
  max-width: 74ch;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--c-text-mute);
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 560px) {
  .page-contact .contact-hero__coord {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }

  .page-contact .contact-sheet {
    box-shadow: 6px 6px 0 rgba(36, 69, 92, 0.5);
  }

  .page-contact .contact-block__value {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}