.page-contact {
  --line-on-paper: rgba(11, 27, 43, .16);
  display: block;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(68, 88, 107, .38) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(68, 88, 107, .38) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-contact .contact-hero > .container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  margin-top: clamp(24px, 4vw, 44px);
}

.page-contact .contact-hero__copy {
  max-width: 60ch;
}

.page-contact .contact-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(42px, 8.4vw, 104px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: 16px;
  line-height: 1.68;
  color: var(--muted);
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 26px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-hero__meta .meta-mono {
  color: var(--cyan);
  font-size: 13px;
}

.page-contact .contact-hero__figure {
  margin: 0;
  width: 100%;
}

/* ---------- 三张不等宽联系卡 ---------- */

.page-contact .contact-channels {
  padding: clamp(44px, 6.5vw, 92px) 0;
}

.page-contact .contact-channels__head {
  max-width: 64ch;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-contact .contact-channels__head .eyebrow {
  margin: 0 0 10px;
}

.page-contact .contact-channels__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-cards {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink);
  transition: background var(--dur) var(--ease);
}

.page-contact .contact-card:hover {
  background: var(--ink-deep);
}

.page-contact .contact-card--mail { border-top: 3px solid var(--cyan); }
.page-contact .contact-card--phone { border-top: 3px solid var(--orange); }
.page-contact .contact-card--addr { border-top: 3px solid var(--green); }

.page-contact .contact-card__label {
  margin: 0;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.55vw, 21px);
  line-height: 1.4;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .contact-card--mail .contact-card__value {
  color: var(--cyan);
}

.page-contact .contact-card__value--addr {
  font-size: clamp(14px, 1.2vw, 16px);
  line-height: 1.6;
}

.page-contact .contact-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .contact-card__foot {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 反馈信息清单 ---------- */

.page-contact .contact-brief {
  padding: clamp(44px, 6.5vw, 92px) 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-brief__grid {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
}

.page-contact .contact-brief h2,
.page-contact .contact-routing h2,
.page-contact .contact-next h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 3.2vw, 44px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .contact-brief__lede {
  margin: 16px 0 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .brief-list {
  list-style: none;
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .brief-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .brief-list__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  padding-top: 2px;
}

.page-contact .brief-list strong {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .brief-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .contact-brief__figure {
  margin: 0;
  width: 100%;
}

/* ---------- 渠道对照表 ---------- */

.page-contact .contact-routing {
  padding: clamp(44px, 6.5vw, 92px) 0;
}

.page-contact .routing-panel {
  margin-top: clamp(26px, 4vw, 42px);
  padding: clamp(20px, 3.4vw, 40px);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 12px 12px 0 var(--paper-shadow);
}

.page-contact .routing-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-contact .routing-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-contact .routing-table__caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 16px;
  font-size: 12px;
  letter-spacing: .02em;
  color: rgba(11, 27, 43, .62);
}

.page-contact .routing-table th,
.page-contact .routing-table td {
  padding: 16px 16px 16px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-on-paper);
}

.page-contact .routing-table thead th {
  padding-top: 0;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(11, 27, 43, .62);
  border-bottom: 1px solid var(--ink);
}

.page-contact .routing-table tbody th {
  font-weight: 600;
  color: var(--ink);
  width: 34%;
}

.page-contact .routing-table tbody td {
  color: rgba(11, 27, 43, .78);
}

.page-contact .routing-table tbody td:first-of-type {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-press);
  white-space: nowrap;
}

.page-contact .routing-table tbody tr {
  transition: background var(--dur) var(--ease);
}

.page-contact .routing-table tbody tr:hover,
.page-contact .routing-table tbody tr:focus-within {
  background: rgba(46, 230, 214, .18);
}

/* ---------- 下一步指引 ---------- */

.page-contact .contact-next {
  padding: clamp(44px, 6.5vw, 92px) 0;
  background: var(--ink-deep);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-next__grid {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
}

.page-contact .contact-next__lead p {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-next__lead .btn {
  margin-top: 28px;
}

.page-contact .next-links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .next-links li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .next-links a {
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .next-links a:hover,
.page-contact .next-links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .next-links span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 备案与地址 ---------- */

.page-contact .contact-registry {
  padding: clamp(32px, 5vw, 60px) 0 clamp(40px, 6vw, 72px);
}

.page-contact .registry-bar {
  display: grid;
  gap: 22px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.page-contact .registry-item__label {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .registry-item__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
}

.page-contact .registry-item__value--addr {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .contact-channels__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: end;
    max-width: none;
  }

  .page-contact .registry-bar {
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 56px;
    align-items: start;
  }

  .page-contact .registry-item__value--addr {
    max-width: 40ch;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: end;
  }

  .page-contact .contact-hero__figure {
    max-width: 580px;
    justify-self: end;
  }

  .page-contact .contact-cards {
    grid-template-columns: 1.45fr 1fr .85fr;
  }

  .page-contact .contact-brief__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }

  .page-contact .contact-brief__figure {
    position: sticky;
    top: calc(var(--header-h) + 32px);
  }

  .page-contact .contact-next__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(48px, 6vw, 88px);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-card--mail .contact-card__value {
    font-size: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .next-links a,
  .page-contact .routing-table tbody tr {
    transition: none;
  }

  .page-contact .contact-brief__figure {
    position: static;
  }
}