.page-contact {
  --pc-cut: var(--cut);
  --pc-line: rgba(220, 207, 184, .14);
  --pc-line-strong: rgba(220, 207, 184, .28);
  --pc-gold-veil: rgba(201, 162, 39, .12);
  padding-bottom: 88px;
}

.page-contact img {
  max-width: 100%;
}

.page-contact .breadcrumb {
  margin: 22px 0 28px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .contact-hero__spine {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-contact .contact-hero__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold-500);
  border: 1px solid var(--line-gold);
  padding: 3px 9px;
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--text-100);
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.95;
  color: var(--mist-300);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

/* ---------- 渠道 ---------- */
.page-contact .channels {
  margin-top: 52px;
}

.page-contact .channels__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: end;
}

.page-contact .channels__headtext h2,
.page-contact .lettering h2,
.page-contact .triage h2,
.page-contact .sla h2,
.page-contact .address h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4.6vw, 38px);
  line-height: 1.24;
  letter-spacing: -.01em;
  color: var(--text-100);
}

.page-contact .channels__intro {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-300);
}

.page-contact .channels__figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--pc-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%);
}

.page-contact .channels__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.88) brightness(.86);
}

.page-contact .channels__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 34px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 22px 20px 18px;
  background: var(--ink-700);
  border: 1px solid var(--pc-line);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, var(--pc-cut) 100%, 0 calc(100% - var(--pc-cut)));
  transition: transform .35s var(--ease), border-color .3s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--gold-500), var(--gold-300), transparent);
  transition: width .42s var(--ease);
}

.page-contact .channel-card:hover::before,
.page-contact .channel-card:focus-within::before {
  width: 100%;
}

.page-contact .channel-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-gold);
}

.page-contact .channel-card__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold-500);
}

.page-contact .channel-card__value {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text-100);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--addr {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.75;
}

.page-contact .channel-card__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist-500);
}

.page-contact .copy-chip {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold-300);
  background: transparent;
  border: 1px solid var(--line-gold);
  border-radius: 0;
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .copy-chip:hover,
.page-contact .copy-chip:focus-visible {
  background: var(--pc-gold-veil);
  color: var(--gold-300);
}

.page-contact .copy-chip[data-copied] {
  border-color: var(--cinnabar-400);
  color: var(--cinnabar-400);
  background: rgba(196, 58, 43, .12);
}

.page-contact .channel-card details {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--pc-line-strong);
}

.page-contact .channel-card summary,
.page-contact .mail-template summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist-300);
}

.page-contact summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel-card summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cinnabar-400);
}

.page-contact .channel-card details[open] summary::after {
  content: "–";
}

.page-contact .channel-card details p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-300);
}

/* ---------- 写信规范 ---------- */
.page-contact .lettering {
  margin-top: 66px;
}

.page-contact .lettering__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-contact .lettering__aside-note {
  margin: 0;
  max-width: 32ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist-500);
}

.page-contact .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .steps li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--pc-line);
}

.page-contact .steps li:last-child {
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .steps__no {
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.4;
  text-align: right;
  color: var(--gold-500);
}

.page-contact .steps h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text-100);
}

.page-contact .steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.88;
  color: var(--mist-300);
}

.page-contact .mail-template {
  margin-top: 22px;
  padding: 18px 20px;
  background: var(--ink-800);
  border-left: 2px solid var(--gold-500);
}

.page-contact .mail-template__body {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 2;
  color: var(--mist-300);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .lettering__legal {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist-500);
}

.page-contact .lettering__legal a {
  color: var(--gold-300);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-contact .lettering__legal a:hover {
  color: var(--cinnabar-400);
  border-bottom-color: var(--cinnabar-400);
}

/* ---------- 分流 ---------- */
.page-contact .triage {
  margin-top: 66px;
}

.page-contact .triage__intro {
  margin: 0 0 26px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist-300);
}

.page-contact .triage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--pc-line-strong);
  border: 1px solid var(--pc-line);
}

.page-contact .triage__col {
  padding: 26px 22px;
  background: var(--ink-900);
}

.page-contact .triage__col--human {
  background: var(--ink-800);
}

.page-contact .triage__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-100);
}

.page-contact .triage__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .triage__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-contact .triage__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 1px;
  background: var(--gold-500);
}

.page-contact .triage__col--human .triage__list li::before {
  background: var(--cinnabar-600);
}

.page-contact .triage__list a {
  color: var(--gold-300);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
}

.page-contact .triage__list a:hover {
  color: var(--cinnabar-400);
  border-bottom-color: var(--cinnabar-400);
}

/* ---------- 处理顺序 ---------- */
.page-contact .sla {
  margin-top: 66px;
}

.page-contact .sla__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-contact .sla__note {
  margin: 0;
  max-width: 30ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist-500);
}

.page-contact .sla__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .sla__item {
  position: relative;
  padding: 0 0 26px 30px;
}

.page-contact .sla__item:last-child {
  padding-bottom: 0;
}

.page-contact .sla__item::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 16px;
  bottom: 0;
  width: 1px;
  background: var(--pc-line-strong);
}

.page-contact .sla__item:last-child::before {
  display: none;
}

.page-contact .sla__dot {
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 4px var(--pc-gold-veil);
}

.page-contact .sla__item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-100);
}

.page-contact .sla__item p {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.88;
  color: var(--mist-300);
}

.page-contact .sla__footnote {
  margin: 30px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--pc-line);
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist-500);
  max-width: 72ch;
}

/* ---------- 地址 ---------- */
.page-contact .address {
  margin-top: 66px;
}

.page-contact .address__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--cream-100);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
  overflow: hidden;
}

.page-contact .address__body {
  padding: 32px 24px 30px;
}

.page-contact .address__eyebrow {
  color: var(--mist-700);
}

.page-contact .address h2 {
  color: #17181C;
}

.page-contact .address__text {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(18px, 3.4vw, 24px);
  font-weight: 800;
  line-height: 1.5;
  color: #17181C;
  overflow-wrap: anywhere;
}

.page-contact .address__desc {
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist-700);
}

.page-contact .address__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-contact .address .copy-chip {
  color: #6B4E0F;
  border-color: rgba(107, 78, 15, .45);
}

.page-contact .address .copy-chip:hover,
.page-contact .address .copy-chip:focus-visible {
  background: rgba(201, 162, 39, .22);
  color: #4A3507;
}

.page-contact .address__hint {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--mist-700);
}

.page-contact .address__figure {
  margin: 0;
  overflow: hidden;
}

.page-contact .address__figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  filter: brightness(.9) saturate(.9);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channels__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .triage__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .address__body {
    padding: 40px 34px 38px;
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding-bottom: 110px;
  }

  .page-contact .contact-hero__inner {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 34px;
  }

  .page-contact .contact-hero__spine {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding-top: 8px;
  }

  .page-contact .contact-hero__spine .eyebrow {
    writing-mode: vertical-rl;
    letter-spacing: .34em;
  }

  .page-contact .channels__head {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 48px;
  }

  .page-contact .channels__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .lettering__layout {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 54px;
  }

  .page-contact .lettering__aside {
    position: sticky;
    top: 92px;
    align-self: start;
    padding-left: 18px;
    border-left: 2px solid var(--cinnabar-600);
  }

  .page-contact .sla__layout {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 52px;
  }

  .page-contact .sla__footnote {
    margin-left: 302px;
  }

  .page-contact .address__panel {
    grid-template-columns: minmax(0, 1fr) 380px;
  }

  .page-contact .address__figure img {
    min-height: 100%;
  }
}

@media (min-width: 1120px) {
  .page-contact .channels__cards {
    gap: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card::before {
    transition: none;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}