.page-contact {
  background: var(--ink);
  color: var(--paper);
}

.page-contact .container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  padding: calc(var(--header-h) + 28px) 0 clamp(48px, 7vw, 84px);
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -55% 35%;
  height: min(520px, 80vw);
  background: radial-gradient(closest-side, rgba(53, 224, 208, 0.14), transparent 70%);
  pointer-events: none;
}

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

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(28px, 5vw, 52px);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--smoke);
}

.page-contact .breadcrumbs a {
  color: var(--smoke);
  text-decoration: none;
}

.page-contact .breadcrumbs a:hover {
  color: var(--cyan);
}

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

.page-contact h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 9vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.page-contact .lede {
  max-width: 46ch;
  margin-top: 18px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--paper-72);
}

.page-contact .channels {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 36px);
}

.page-contact .channel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 16px 16px 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(26, 17, 16, 0.94), rgba(11, 11, 15, 0.94));
  transition: border-color 0.2s var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--red);
}

.page-contact .channel--mail::before {
  background: var(--gold);
}

.page-contact .channel:hover {
  border-color: var(--gold);
}

.page-contact .channel-label {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--smoke);
}

.page-contact .channel-num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.5rem, 7.2vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
}

.page-contact .channel-num--mail {
  font-size: clamp(0.95rem, 4.3vw, 1.5rem);
  letter-spacing: -0.01em;
}

.page-contact .copy-btn {
  margin-top: 2px;
}

.page-contact .copy-status {
  min-height: 1.2em;
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--cyan);
}

.page-contact .channel-note {
  margin-top: 6px;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--smoke);
}

.page-contact .hero-routes {
  padding-top: 4px;
}

.page-contact .route-grid {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.page-contact .route-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 14px 14px;
  border: 1px solid var(--line);
  background: rgba(244, 233, 216, 0.035);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-contact .route-card:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  background-color: rgba(58, 23, 20, 0.6);
}

.page-contact .route-card h2 {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-contact .route-card p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--paper-56);
}

.page-contact .route-card .link-arrow {
  margin-top: auto;
  font-size: 0.8rem;
}

/* 联系地址 */
.page-contact .address {
  padding: clamp(48px, 7vw, 88px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .address-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-contact .media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .media figcaption {
  padding: 10px 12px;
  font-size: 0.75rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--smoke);
  border-top: 1px solid var(--line-soft);
}

.page-contact .address-copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 5.4vw, 2.2rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-contact .address-line {
  margin: 18px 0 20px;
  padding: 10px 0 10px 14px;
  border-left: 3px solid var(--red);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.9;
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .address-copy p {
  margin: 0 0 14px;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--paper-72);
}

.page-contact .address-jump {
  margin-top: 20px;
}

/* 备案与服务地区 */
.page-contact .filing {
  padding: clamp(32px, 5vw, 52px) 0;
  background: var(--maroon);
  border-top: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
}

.page-contact .filing-inner {
  display: grid;
  gap: 22px;
}

.page-contact .filing-icp {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 4vw, 1.5rem);
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .filing-body h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 3.8vw, 1.65rem);
  line-height: 1.3;
}

.page-contact .filing-body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--paper-72);
}

/* 联系前准备 */
.page-contact .prep {
  padding: clamp(48px, 7vw, 88px) 0;
}

.page-contact .prep-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .prep-copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.8vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-contact .prep-lede {
  margin: 14px 0 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--paper-72);
}

.page-contact .prep-list {
  list-style: none;
  counter-reset: prep;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .prep-item::before {
  counter-increment: prep;
  content: counter(prep, decimal-leading-zero);
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--red);
}

.page-contact .prep-item h3 {
  margin: 0 0 5px;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-contact .prep-item p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.78;
  color: var(--paper-56);
}

.page-contact .prep-side {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-contact .prep-details {
  border: 1px solid var(--line);
  background: var(--teal-ink);
}

.page-contact .prep-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--cyan);
}

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

.page-contact .prep-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--cyan);
  transition: transform 0.2s var(--ease);
}

.page-contact .prep-details[open] summary::after {
  transform: rotate(45deg);
}

.page-contact .prep-body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .prep-body p {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.9;
  color: var(--paper-72);
  overflow-wrap: anywhere;
}

.page-contact .prep-foot {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.85;
  color: var(--smoke);
}

.page-contact .prep-foot .link-arrow {
  font-size: 0.86rem;
}

/* 断点 */
@media (min-width: 600px) {
  .page-contact .route-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .address-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
  }

  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-contact .filing-inner {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
    gap: 44px;
  }
}

@media (min-width: 960px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }

  .page-contact .hero-routes {
    padding-left: clamp(24px, 3vw, 40px);
    border-left: 1px solid var(--line-soft);
  }
}
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