.page-contact {
  background: var(--ink);
  color: var(--paper);
  padding-top: var(--bar-h);
  overflow-x: clip;
}

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

.page-contact a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(156, 246, 212, 0.35);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

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

.page-contact .section-head {
  display: grid;
  gap: 0.5rem;
  max-width: 52ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .section-sub {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-block: clamp(1.5rem, 4vw, 3rem) clamp(2rem, 6vw, 4.5rem);
  border-bottom: 2px solid var(--line);
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.page-contact .breadcrumbs a {
  color: var(--muted);
  border-bottom-color: transparent;
}

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

.page-contact .hero-copy h1 {
  margin: 0.5rem 0 0;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-contact .lead {
  margin: 1.25rem 0 0;
  max-width: 44ch;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  line-height: 1.8;
}

.page-contact .hero-channels {
  margin-top: 1.75rem;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 2px solid var(--line);
  box-shadow: 6px 6px 0 var(--shadow);
}

.page-contact .hero-chan {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1rem 1.1rem;
  background: var(--panel);
}

.page-contact .hero-chan-label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--sand);
}

.page-contact .hero-chan-value {
  font-size: clamp(0.95rem, 1.9vw, 1.18rem);
  font-weight: 600;
  color: var(--paper);
  word-break: break-word;
  line-height: 1.4;
}

.page-contact .hero-facts {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-contact .hero-facts li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .hero-facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  background: var(--signal);
  transform: rotate(45deg);
}

.page-contact .hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 420px;
  border: 2px solid var(--line);
  box-shadow: 6px 6px 0 var(--shadow);
  background: var(--panel);
  overflow: hidden;
}

.page-contact .hero-visual-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  filter: saturate(0.65) contrast(1.08);
}

.page-contact .venue-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 10%;
  color: var(--signal);
  opacity: 0.4;
}

.page-contact .clock-strip {
  position: relative;
  margin-top: auto;
  padding: 0.9rem 1rem 1.1rem;
  background: rgba(7, 19, 15, 0.9);
  border-top: 2px solid var(--line);
}

.page-contact .clock-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}

.page-contact .clock-title {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .clock-scale {
  height: 14px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(
    90deg,
    var(--sand) 0 1px,
    transparent 1px 8.3333%
  );
  opacity: 0.85;
}

.page-contact .clock-marks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.45rem;
  font-size: 0.65rem;
  color: var(--muted);
}

/* ---------- 渠道卡 ---------- */

.page-contact .channels {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
}

.page-contact .chan-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .chan-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
  background: var(--panel);
  border: 2px solid var(--line);
  box-shadow: 6px 6px 0 var(--shadow);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-contact .chan-card:hover,
.page-contact .chan-card:focus-within {
  border-color: var(--signal);
  box-shadow: 6px 6px 0 var(--shadow), 0 0 0 2px rgba(53, 242, 176, 0.2);
}

.page-contact .chan-card .tag {
  align-self: flex-start;
}

.page-contact .chan-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .chan-value {
  margin: 0;
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  font-weight: 600;
  color: var(--signal);
  word-break: break-word;
  line-height: 1.45;
}

.page-contact .chan-desc {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 问题分流 ---------- */

.page-contact .routes {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 2px solid var(--line);
}

.page-contact .route-list {
  display: grid;
  gap: 0.75rem;
}

.page-contact .route-item {
  background: var(--panel);
  border: 2px solid var(--line);
  transition: border-color 0.2s var(--ease);
}

.page-contact .route-item[open] {
  border-color: var(--edge, var(--line));
  border-left: 2px solid var(--signal);
}

.page-contact .route-item summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  transition: background 0.18s var(--ease);
}

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

.page-contact .route-item summary:hover,
.page-contact .route-item summary:focus-visible {
  background: rgba(53, 242, 176, 0.07);
  outline: none;
}

.page-contact .route-item summary:focus-visible {
  box-shadow: inset 0 0 0 2px var(--signal);
}

.page-contact .route-num {
  font-size: 0.82rem;
  color: var(--sand);
  letter-spacing: 0.05em;
}

.page-contact .route-title {
  font-size: clamp(0.98rem, 1.7vw, 1.12rem);
  font-weight: 800;
  color: var(--paper);
}

.page-contact .route-mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-contact .route-mark::before,
.page-contact .route-mark::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 14px;
  height: 2px;
  background: var(--signal);
}

.page-contact .route-mark::after {
  transform: rotate(90deg);
  transition: transform 0.22s var(--ease);
}

.page-contact .route-item[open] .route-mark::after {
  transform: rotate(0deg);
}

.page-contact .route-body {
  padding: 0 1.1rem 1.25rem;
  border-top: 1px dashed var(--line);
  margin-top: 0.15rem;
  padding-top: 1rem;
}

.page-contact .route-body p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .prep {
  margin: 1rem 0 0;
  padding: 0.85rem 1rem;
  background: rgba(216, 179, 106, 0.08);
  border-left: 2px solid var(--sand);
}

.page-contact .prep dt {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--sand);
  margin-bottom: 0.35rem;
}

.page-contact .prep dd {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 数据反馈 ---------- */

.page-contact .feedback {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 2px solid var(--line);
}

.page-contact .feedback-lead {
  margin: 0 0 0;
  max-width: 46ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .feedback-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-contact .feedback-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--line);
  transition: border-color 0.2s var(--ease);
}

.page-contact .feedback-item:hover {
  border-left-color: var(--signal);
}

.page-contact .feedback-num {
  font-size: 0.82rem;
  color: var(--sand);
  padding-top: 0.15rem;
}

.page-contact .feedback-item h3 {
  margin: 0 0 0.3rem;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .feedback-item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .feedback-foot {
  margin: 1.5rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.page-contact .feedback-figure {
  margin: 0;
  align-self: start;
}

.page-contact .feedback-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--line);
  box-shadow: 6px 6px 0 var(--shadow);
}

.page-contact .feedback-figure figcaption {
  margin-top: 0.75rem;
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--muted);
  padding-left: 0.8rem;
  border-left: 2px solid var(--sand);
}

/* ---------- 合作方向 ---------- */

.page-contact .partners {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 2px solid var(--line);
}

.page-contact .partners-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 2px solid var(--line);
  box-shadow: 6px 6px 0 var(--shadow);
}

.page-contact .partner {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: clamp(1.1rem, 2.4vw, 1.5rem);
  background: var(--panel);
  transition: background 0.2s var(--ease);
}

.page-contact .partner:hover {
  background: #102a22;
}

.page-contact .partner-num {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--sand);
}

.page-contact .partner h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .partner p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .partners-foot {
  margin: 1.5rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

/* ---------- 响应说明 ---------- */

.page-contact .response {
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(3rem, 7vw, 5.5rem);
  border-top: 2px solid var(--line);
}

.page-contact .response-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

.page-contact .response-item {
  padding-left: 1rem;
  border-left: 2px solid var(--signal);
}

.page-contact .response-item h3 {
  margin: 0 0 0.45rem;
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .response-item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .response-foot {
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--line);
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) {
  .page-contact .hero-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .hero-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem 1.25rem;
  }
}

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

  .page-contact .hero-visual {
    min-height: 490px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
    gap: clamp(2rem, 4vw, 4rem);
  }

  .page-contact .hero-copy h1 {
    font-size: clamp(2.6rem, 4.6vw, 3.9rem);
  }

  .page-contact .hero-visual {
    min-height: 560px;
    position: sticky;
    top: calc(var(--bar-h) + 1.5rem);
  }

  .page-contact .chan-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-contact .chan-card:nth-child(even) {
    margin-top: 2rem;
  }

  .page-contact .feedback {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
  }

  .page-contact .response-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
}

@media (min-width: 1100px) {
  .page-contact .partners-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .route-item summary {
    padding: 1.15rem 1.5rem;
  }

  .page-contact .route-body {
    padding: 1.1rem 1.5rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.page-contact {
  --edge: currentColor;
}