.page-contact {
  --pc-panel-bg: linear-gradient(150deg, var(--ink-900) 0%, var(--ink-950) 78%);
  --pc-card-shadow: 0 20px 44px -28px rgba(43, 240, 208, 0.5);
  overflow-x: clip;
  padding-bottom: clamp(40px, 6vw, 80px);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: 24px 0 6px;
}

.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--text-mid);
}

.page-contact .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-700);
}

.page-contact .breadcrumb-list a {
  color: var(--text-mid);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-contact .breadcrumb-list a:hover {
  color: var(--cyan-400);
}

.page-contact .breadcrumb-list [aria-current="page"] {
  color: var(--text-hi);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: 10px;
}

.page-contact .contact-kicker {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cyan-400);
}

.page-contact .contact-h1 {
  margin: 0 0 18px;
  max-width: 760px;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.6vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text-hi);
}

.page-contact .contact-lede {
  margin: 0 0 24px;
  max-width: 660px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--text-mid);
}

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

.page-contact .contact-hero-figure {
  margin: 36px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-700);
  box-shadow: var(--shadow-card);
}

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

/* ---------- 渠道分流 ---------- */
.page-contact .contact-split {
  display: grid;
  gap: 18px;
  margin-top: 4px;
}

.page-contact .contact-rail {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .channel-card {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 22px 20px 22px 22px;
  background: var(--ink-800);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--cyan-400);
  opacity: 0.9;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan-400);
  box-shadow: var(--pc-card-shadow);
}

.page-contact .channel-idx {
  padding-top: 4px;
  font-size: 13px;
  line-height: 1.5;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}

.page-contact .channel-name {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text-hi);
}

.page-contact .channel-value {
  margin: 0 0 12px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--cyan-400);
  overflow-wrap: anywhere;
}

.page-contact .channel-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.68;
  color: var(--text-mid);
}

.page-contact .channel-note {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--cyan-700);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-mid);
}

/* ---------- 右侧路径面板 ---------- */
.page-contact .contact-panel {
  padding: 26px 22px 24px;
  background: var(--pc-panel-bg);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-lg);
}

.page-contact .panel-title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text-hi);
}

.page-contact .route-diagram {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 0 auto 20px;
}

.page-contact .rd-line {
  fill: none;
  stroke: var(--line-700);
  stroke-width: 1.5;
}

.page-contact .rd-line--cyan {
  stroke: var(--cyan-700);
}

.page-contact .rd-dot {
  fill: var(--ink-950);
  stroke: var(--line-700);
  stroke-width: 1.5;
}

.page-contact .rd-dot--start {
  fill: var(--orange-500);
  stroke: var(--orange-500);
}

.page-contact .rd-dot--lit {
  fill: var(--cyan-400);
  stroke: var(--cyan-400);
}

.page-contact .rd-label {
  fill: var(--text-mid);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-contact .rd-label--hi {
  fill: var(--cyan-400);
}

.page-contact .panel-text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-mid);
}

.page-contact .panel-text:last-child {
  margin-bottom: 0;
}

/* ---------- 回复时间 ---------- */
.page-contact .reply-grid {
  display: grid;
  gap: 26px;
}

.page-contact .reply-list {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .reply-list li {
  padding: 14px 16px;
  background: var(--ink-800);
  border-left: 2px solid var(--cyan-700);
  border-radius: var(--radius-sm);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-mid);
}

.page-contact .reply-time {
  display: block;
  margin-bottom: 5px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

.page-contact .reply-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-700);
}

.page-contact .reply-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 合作 ---------- */
.page-contact .coop-block {
  padding: 30px 22px 28px;
  border: 1px solid var(--line-700);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 130% at 0% 0%, rgba(122, 92, 255, 0.16), transparent 58%),
    var(--ink-900);
}

.page-contact .coop-block .section-idx {
  margin-bottom: 10px;
}

.page-contact .coop-lead {
  margin: 0;
  max-width: 760px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text-mid);
  overflow-wrap: anywhere;
}

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

.page-contact .coop-points li {
  padding: 16px 18px;
  background: rgba(17, 28, 66, 0.72);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-sm);
}

.page-contact .coop-points strong {
  display: block;
  margin-bottom: 7px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
}

.page-contact .coop-points p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--text-mid);
}

/* ---------- 所在地与备案信息条 ---------- */
.page-contact .info-bar {
  display: grid;
  border-top: 1px solid var(--line-700);
  border-bottom: 1px solid var(--line-700);
}

.page-contact .info-item {
  padding: 20px 2px;
}

.page-contact .info-item + .info-item {
  border-top: 1px solid var(--line-700);
}

.page-contact .info-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--text-mid);
}

.page-contact .info-value {
  display: block;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--text-hi);
  overflow-wrap: anywhere;
}

/* ---------- 常见主题 ---------- */
.page-contact .topic-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.page-contact .topic-list .disclosure {
  padding: 0 18px;
  background: var(--ink-800);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-sm);
  transition: border-color 0.22s ease;
}

.page-contact .topic-list .disclosure:hover,
.page-contact .topic-list .disclosure[open] {
  border-color: var(--cyan-700);
}

.page-contact .topic-list .disclosure summary {
  padding: 16px 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-hi);
}

.page-contact .topic-list .disclosure-body {
  padding-bottom: 16px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-mid);
}

.page-contact .topic-list .disclosure-body p {
  margin: 0;
}

.page-contact .topic-list .disclosure-body a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 208, 0.42);
}

.page-contact .topic-list .disclosure-body a:hover {
  border-bottom-color: var(--cyan-400);
}

/* ---------- 常用入口 ---------- */
.page-contact .entry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.page-contact .entry-link {
  display: block;
  padding: 20px 18px;
  background: var(--ink-900);
  border: 1px solid var(--line-700);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-hi);
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-contact .entry-link:hover,
.page-contact .entry-link:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan-400);
  background: var(--ink-800);
}

.page-contact .entry-idx {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan-400);
}

.page-contact .entry-desc {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-mid);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .breadcrumb {
    padding-top: 30px;
  }

  .page-contact .info-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--line-700);
  }

  .page-contact .info-item {
    padding: 22px 20px;
    border-bottom: none;
  }

  .page-contact .info-item + .info-item {
    border-top: none;
    border-left: 1px solid var(--line-700);
  }

  .page-contact .coop-points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: 28px;
    align-items: start;
  }

  .page-contact .reply-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
    gap: 44px;
    align-items: center;
  }

  .page-contact .contact-panel {
    padding: 32px 28px 30px;
  }

  .page-contact .coop-block {
    padding: 40px 42px 38px;
  }

  .page-contact .contact-hero-figure {
    margin-top: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .entry-link,
  .page-contact .topic-list .disclosure {
    transition: none;
  }

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