.page-contact {
  --pc-gap: clamp(26px, 5vw, 56px);
  position: relative;
  overflow: hidden;
}

.page-contact .breadcrumbs {
  padding-top: clamp(16px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(38px, 6vw, 76px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -12%;
  width: min(72vw, 760px);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(200, 255, 51, .16), rgba(51, 230, 209, .07) 44%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: center;
}

.page-contact .contact-hero-copy {
  min-width: 0;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 5.6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.03em;
  margin: .22em 0 .55em;
  color: var(--white-50);
  max-width: 14em;
}

.page-contact .contact-hero-lead {
  margin: 0;
  max-width: 36em;
  font-size: clamp(.94rem, 1.6vw, 1.05rem);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-fact {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 16px;
  background: var(--surface);
  border-left: 2px solid var(--accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-contact .hero-fact b {
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 600;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-contact .hero-fact span {
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--text-dim);
}

.page-contact .contact-hero-figure {
  position: relative;
  margin: 0;
  aspect-ratio: 4 / 3;
  background: linear-gradient(145deg, var(--ink-700), var(--ink-900) 70%);
  border: 1px solid var(--line);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
}

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

.page-contact .contact-hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(0deg, rgba(51, 230, 209, .07) 0 1px, transparent 1px 6px);
  pointer-events: none;
}

/* ---------- 通道与分流 ---------- */
.page-contact .channels {
  padding: clamp(36px, 6vw, 78px) 0;
  border-top: 1px solid var(--line);
}

.page-contact .channels-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .channels-left,
.page-contact .channels-right {
  min-width: 0;
}

.page-contact .pc-h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 2rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.25;
  color: var(--white-50);
}

.page-contact .pc-h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: clamp(1.02rem, 2.4vw, 1.2rem);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--white-50);
}

.page-contact .pc-sub {
  margin: 0 0 clamp(18px, 3vw, 26px);
  max-width: 34em;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .chan-stack {
  display: grid;
  gap: 16px;
}

.page-contact .chan-card {
  display: block;
  padding: clamp(20px, 3vw, 30px);
  text-decoration: none;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
  transition: transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .chan-card:hover,
.page-contact .chan-card:focus-visible {
  transform: translateY(-3px);
  background: var(--surface-2);
  border-color: var(--line-strong);
}

.page-contact .chan-label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--accent);
}

.page-contact .chan-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 3.2vw, 1.72rem);
  font-weight: 600;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--white-50);
  word-break: break-word;
  overflow-wrap: anywhere;
  transition: color .2s var(--ease);
}

.page-contact .chan-card:hover .chan-value {
  color: var(--accent);
}

.page-contact .chan-note {
  display: block;
  margin-top: 10px;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .route-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  background: var(--bg);
  transition: background .2s var(--ease);
}

.page-contact .route-item:hover {
  background: var(--surface);
}

.page-contact .route-no {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-contact .route-body {
  min-width: 0;
}

.page-contact .route-name {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: .98rem;
  font-weight: 700;
  color: var(--white-50);
}

.page-contact .route-desc {
  margin: 0;
  font-size: .85rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .route-desc a,
.page-contact .prep-foot a {
  color: var(--accent-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 230, 209, .45);
}

.page-contact .route-desc a:hover,
.page-contact .prep-foot a:hover {
  color: var(--white-50);
  border-bottom-color: var(--white-50);
}

/* ---------- 准备清单 ---------- */
.page-contact .prep {
  margin-top: clamp(26px, 4vw, 42px);
  padding: clamp(20px, 3vw, 28px);
  background: var(--surface);
  border: 1px solid var(--line);
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut));
}

.page-contact .prep-lead {
  margin: 0 0 16px;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .prep .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.page-contact .prep .filter-btn {
  padding: 7px 14px;
  font-family: var(--font-body);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--text-dim);
  background: var(--ink-900);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  cursor: pointer;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .prep .filter-btn:hover {
  color: var(--white-50);
  border-color: var(--accent);
}

.page-contact .prep .filter-btn[aria-pressed="true"] {
  color: var(--ink-900);
  background: var(--accent);
  border-color: var(--accent);
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 8px;
  padding: 12px 14px;
  background: var(--ink-900);
  border-left: 2px solid var(--ink-700);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .prep-item:hover {
  border-left-color: var(--accent);
  background: var(--ink-800);
}

.page-contact .prep-idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--fog-400);
  font-variant-numeric: tabular-nums;
}

.page-contact .prep-text {
  margin: 0;
  font-size: .86rem;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-contact .prep-text strong {
  color: var(--white-50);
  font-weight: 600;
}

.page-contact .prep-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 响应节奏 ---------- */
.page-contact .sla {
  padding: clamp(34px, 5vw, 68px) 0 clamp(30px, 4vw, 56px);
}

.page-contact .sla-head {
  margin-bottom: clamp(18px, 3vw, 28px);
}

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

.page-contact .sla-item {
  min-width: 0;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--bg);
  transition: background .2s var(--ease);
}

.page-contact .sla-item:hover {
  background: var(--surface);
}

.page-contact .sla-time {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.8vw, 1.65rem);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-contact .sla-title {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 700;
  color: var(--white-50);
}

.page-contact .sla-text {
  margin: 0;
  font-size: .84rem;
  line-height: 1.72;
  color: var(--text-dim);
}

/* ---------- 地址信息带 ---------- */
.page-contact .addr-band {
  position: relative;
  margin-top: clamp(20px, 3vw, 36px);
  background: linear-gradient(120deg, var(--ink-800), var(--ink-900) 68%);
  border-top: 1px solid var(--line);
}

.page-contact .addr-band::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: repeating-linear-gradient(45deg, var(--accent) 0 10px, transparent 10px 24px);
  opacity: .75;
}

.page-contact .addr-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
  padding-top: clamp(38px, 5vw, 62px);
  padding-bottom: clamp(34px, 5vw, 58px);
}

.page-contact .addr-copy {
  min-width: 0;
  padding-top: 8px;
}

.page-contact .addr-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--accent);
}

.page-contact .addr-text {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 3.4vw, 1.85rem);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -.02em;
  color: var(--white-50);
}

.page-contact .addr-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin: 0 0 8px;
  font-size: .84rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .addr-meta span {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--white-50);
  font-variant-numeric: tabular-nums;
}

.page-contact .addr-figure {
  margin: 0;
  aspect-ratio: 10 / 7;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

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

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

@media (min-width: 900px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }

  .page-contact .addr-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 980px) {
  .page-contact .channels-grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }
}

@media (min-width: 1120px) {
  .page-contact .sla-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan-card,
  .page-contact .chan-value,
  .page-contact .route-item,
  .page-contact .prep-item,
  .page-contact .sla-item,
  .page-contact .prep .filter-btn {
    transition: none;
  }

  .page-contact .chan-card:hover,
  .page-contact .chan-card:focus-visible {
    transform: none;
  }
}