.page-contact {
  --pc-gap: clamp(18px, 3.2vw, 34px);
  --pc-pad: clamp(16px, 2.6vw, 28px);
  --pc-pace-pad: clamp(16px, 2.4vw, 28px);
  background:
    radial-gradient(120% 70% at 88% -10%, rgba(7, 26, 43, 0.95) 0%, rgba(6, 21, 18, 0) 62%),
    var(--ink-night);
  color: var(--paper);
  font-family: var(--sans);
  overflow-x: clip;
}

.page-contact .section {
  padding-block: clamp(36px, 6vw, 76px);
}

.page-contact .section--tight {
  padding-block: clamp(26px, 4.2vw, 52px);
}

.page-contact .section-head {
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact h1,
.page-contact h2 {
  font-family: var(--display);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.04;
  margin: 0.35em 0 0;
  text-wrap: balance;
}

.page-contact h1 {
  font-size: clamp(2rem, 6.6vw, 4.2rem);
}

.page-contact h2 {
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
}

.page-contact h3 {
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  font-weight: 800;
  letter-spacing: 0.01em;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-contact .section-lede {
  margin: 14px 0 0;
  color: var(--mist-cyan);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.8;
  max-width: 66ch;
}

.page-contact .kicker {
  color: var(--electric-cyan);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-block: clamp(18px, 2.4vw, 30px) clamp(32px, 5.4vw, 72px);
  background: linear-gradient(178deg, rgba(7, 26, 43, 0.92) 0%, rgba(6, 21, 18, 0) 74%);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 54ch;
  color: var(--mist-cyan);
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  line-height: 1.8;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 16px 0 0;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--mist-cyan);
}

.page-contact .contact-hero__facts .mono {
  display: inline-block;
  min-width: 7.5em;
  color: var(--electric-cyan);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--night-blue);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 14 / 9;
  filter: saturate(0.92) contrast(1.06);
}

.page-contact .contact-hero__badge {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  background: var(--ink-night);
  color: var(--electric-cyan);
  font-size: 11px;
  letter-spacing: 0.12em;
  border-top: 1px solid var(--electric-cyan);
  border-right: 1px solid var(--line-strong);
}

/* ---------- 分流台 ---------- */

.page-contact .route-board {
  display: grid;
  border: 1px solid var(--line-strong);
  background: linear-gradient(165deg, rgba(18, 54, 44, 0.55) 0%, rgba(7, 26, 43, 0.6) 100%);
}

.page-contact .route-board__rail {
  display: grid;
  align-content: start;
}

.page-contact .route-tab {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "num name"
    "num hint";
  gap: 2px 14px;
  width: 100%;
  padding: clamp(14px, 2vw, 22px) var(--pc-pad);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  color: var(--paper);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-contact .route-tab:hover,
.page-contact .route-tab:focus-visible {
  background: rgba(18, 54, 44, 0.78);
}

.page-contact .route-tab[aria-selected="true"] {
  background: var(--moss-panel);
  box-shadow: inset 3px 0 0 var(--signal-orange);
}

.page-contact .route-tab__num {
  grid-area: num;
  align-self: start;
  color: var(--electric-cyan);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.page-contact .route-tab__name {
  grid-area: name;
  font-family: var(--display);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-contact .route-tab__hint {
  grid-area: hint;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--mist-cyan);
}

.page-contact .route-board__panels {
  min-width: 0;
  border-top: 1px solid var(--line);
}

.page-contact .route-panel {
  padding: clamp(20px, 3vw, 34px);
  animation: pcFade 0.38s var(--ease) both;
}

.page-contact .route-panel[hidden] {
  display: none;
}

.page-contact .route-panel p {
  margin: 0;
  color: var(--mist-cyan);
  font-size: 0.95rem;
  line-height: 1.85;
  max-width: 60ch;
}

.page-contact .prep-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .prep-list li {
  position: relative;
  padding-left: 26px;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 11px;
  height: 11px;
  border: 1px solid var(--electric-cyan);
  background: rgba(43, 227, 242, 0.12);
}

@keyframes pcFade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 材料清单 ---------- */

.page-contact .prep-grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .prep-media {
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--night-blue);
}

.page-contact .prep-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 10 / 7;
  filter: saturate(0.9);
}

.page-contact .prep-media figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  color: var(--mist-cyan);
}

.page-contact .check-list {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .check-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .check-item__num {
  color: var(--signal-orange);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  padding-top: 3px;
}

.page-contact .check-item strong {
  display: block;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
}

.page-contact .check-item p {
  margin: 6px 0 0;
  color: var(--mist-cyan);
  font-size: 0.88rem;
  line-height: 1.75;
}

/* ---------- 联系渠道 ---------- */

.page-contact .signal-map {
  display: none;
  width: 100%;
  max-width: 420px;
  height: auto;
  margin: 0 0 clamp(18px, 3vw, 28px);
}

.page-contact .signal-map__wire {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 1.4;
  stroke-linecap: round;
}

.page-contact .signal-map__wire--hot {
  stroke: var(--signal-orange);
  stroke-width: 2;
  stroke-dasharray: 6 7;
}

.page-contact .signal-map__node {
  fill: var(--electric-cyan);
}

.page-contact .channel-grid {
  display: grid;
  gap: 14px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--pc-pad);
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(18, 54, 44, 0.82) 0%, rgba(7, 26, 43, 0.72) 100%);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-contact .channel-card:hover {
  transform: translateY(-3px);
  border-color: var(--electric-cyan);
}

.page-contact .channel-card__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--electric-cyan);
  text-transform: uppercase;
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--mono);
  font-size: clamp(0.98rem, 1.7vw, 1.18rem);
  line-height: 1.5;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.78;
  color: var(--mist-cyan);
}

.page-contact .channel-card--paper {
  background: var(--paper);
  border-color: var(--paper);
  color: var(--ink-night);
}

.page-contact .channel-card--paper .channel-card__label {
  color: var(--ember);
}

.page-contact .channel-card--paper .channel-card__value {
  color: var(--ink-night);
  font-family: var(--sans);
  font-weight: 700;
}

.page-contact .channel-card--paper .channel-card__note {
  color: rgba(6, 21, 18, 0.72);
}

.page-contact .channel-card--paper:hover {
  border-color: var(--signal-orange);
}

.page-contact .channel-tip {
  margin-top: clamp(16px, 2.6vw, 26px);
}

.page-contact .channel-tip p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist-cyan);
}

.page-contact .channel-tip strong {
  color: var(--paper);
}

/* ---------- 处理节奏 ---------- */

.page-contact .pacing-grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .pacing {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--pc-pace-pad);
  border-left: 1px solid var(--line-strong);
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
}

.page-contact .pacing li {
  position: relative;
}

.page-contact .pacing li::before {
  content: "";
  position: absolute;
  top: 0.55em;
  left: calc(var(--pc-pace-pad) * -1 - 5px);
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--electric-cyan);
  box-shadow: 0 0 0 3px rgba(43, 227, 242, 0.14);
}

.page-contact .pacing li:nth-child(2)::before {
  background: var(--signal-orange);
  box-shadow: 0 0 0 3px rgba(255, 90, 42, 0.16);
}

.page-contact .pacing__tag {
  display: inline-block;
  margin-bottom: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--electric-cyan);
}

.page-contact .pacing li p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist-cyan);
  max-width: 58ch;
}

.page-contact .pacing-foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 0.88rem;
  line-height: 1.9;
  color: var(--mist-cyan);
}

.page-contact .pacing-foot a {
  color: var(--paper);
  border-bottom: 1px solid var(--signal-orange);
  text-decoration: none;
  padding-bottom: 1px;
}

.page-contact .pacing-foot a:hover,
.page-contact .pacing-foot a:focus-visible {
  color: var(--signal-orange);
}

/* ---------- 合作咨询 ---------- */

.page-contact .partner {
  border: 1px solid var(--line-strong);
  background: linear-gradient(200deg, rgba(7, 26, 43, 0.9) 0%, rgba(18, 54, 44, 0.55) 100%);
}

.page-contact .partner-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--line);
}

.page-contact .partner-tab {
  flex: 1 1 auto;
  padding: 10px 14px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--paper);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-contact .partner-tab:hover,
.page-contact .partner-tab:focus-visible {
  border-color: var(--electric-cyan);
  color: var(--electric-cyan);
}

.page-contact .partner-tab[aria-selected="true"] {
  background: var(--signal-orange);
  border-color: var(--signal-orange);
  color: var(--ink-night);
  font-weight: 700;
}

.page-contact .partner-panel {
  padding: clamp(20px, 3vw, 34px);
  animation: pcFade 0.38s var(--ease) both;
}

.page-contact .partner-panel[hidden] {
  display: none;
}

.page-contact .partner-panel p {
  margin: 0;
  color: var(--mist-cyan);
  font-size: 0.94rem;
  line-height: 1.85;
  max-width: 62ch;
}

/* ---------- 底部信号条 ---------- */

.page-contact .signal-strip {
  margin-top: clamp(24px, 4vw, 44px);
  padding-top: clamp(18px, 3vw, 28px);
  border-top: 2px solid var(--signal-orange);
  display: grid;
  gap: 18px;
}

.page-contact .signal-strip__mail {
  margin: 8px 0 0;
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  letter-spacing: 0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .signal-strip__hours {
  margin: 8px 0 0;
  font-size: 0.86rem;
  color: var(--mist-cyan);
}

.page-contact .signal-strip__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-content: start;
}

.page-contact .signal-strip__links a {
  font-size: 0.88rem;
  color: var(--mist-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .contact-hero__facts li {
    display: grid;
    gap: 4px;
  }

  .page-contact .contact-hero__facts .mono {
    min-width: 0;
  }

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

  .page-contact .signal-map {
    display: block;
  }

  .page-contact .ping-grid,
  .page-contact .signal-strip {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
  }

  .page-contact .route-board {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: stretch;
  }

  .page-contact .route-tab:last-child {
    border-bottom: 0;
  }

  .page-contact .route-board__panels {
    border-top: 0;
    border-left: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-contact .prep-media {
    position: sticky;
    top: 96px;
  }

  .page-contact .pacing-grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }

  .page-contact .partner-tab {
    flex: 0 0 auto;
    padding: 10px 22px;
  }
}

@media (min-width: 1040px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .route-panel,
  .page-contact .partner-panel {
    animation: none;
  }

  .page-contact .route-tab,
  .page-contact .partner-tab,
  .page-contact .channel-card {
    transition: none;
  }

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