.page-contact {
  display: block;
}

.page-contact .section,
.page-contact .contact-hero {
  width: var(--shell);
  margin-inline: auto;
}

/* ---------- 首屏拼贴 ---------- */
.page-contact .contact-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  padding-block: clamp(26px, 4.5vw, 52px) clamp(34px, 6vw, 76px);
}

.page-contact .contact-hero-main h1 {
  font-size: var(--fs-1);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  color: var(--ink);
}

.page-contact .contact-hero-lede {
  margin-top: 22px;
  max-width: 60ch;
  font-size: var(--fs-6);
  line-height: 1.9;
  color: var(--ink);
}

.page-contact .contact-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .hero-tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .hero-tile {
  background: var(--nebula);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 118px;
  border-left: 2px solid transparent;
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-contact .hero-tile:hover {
  border-left-color: var(--cyan);
}

.page-contact .hero-tile--wide {
  grid-column: span 2;
  background: linear-gradient(120deg, rgba(75, 46, 158, 0.55), rgba(14, 21, 48, 0.92));
}

.page-contact .tile-index {
  font-size: var(--fs-8);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .tile-value {
  font-size: var(--fs-6);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .tile-note {
  font-size: var(--fs-8);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 联系通道 ---------- */
.page-contact .ways-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: clamp(24px, 3vw, 40px);
}

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

.page-contact .coord-card {
  background: var(--nebula);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-left: 2px solid var(--galaxy);
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}

.page-contact .coord-card:hover {
  border-left-color: var(--cyan);
  background: #101838;
}

.page-contact .coord-card--gold {
  border-left-color: var(--gold);
}

.page-contact .coord-card--cyan {
  border-left-color: var(--cyan);
}

.page-contact .coord-card--violet {
  border-left-color: var(--galaxy);
}

.page-contact .coord-index {
  font-size: var(--fs-8);
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .coord-card--gold .coord-index {
  color: var(--gold);
}

.page-contact .coord-label {
  font-size: var(--fs-8);
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-contact .coord-value {
  font-size: var(--fs-6);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-all;
}

.page-contact .coord-note {
  margin: 0;
  font-size: var(--fs-8);
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .coord-card .copy-btn {
  align-self: flex-start;
  margin-top: 2px;
}

.page-contact .ways-body h3 {
  font-size: var(--fs-5);
  line-height: 1.35;
  margin: 0 0 16px;
  color: var(--ink);
}

.page-contact .channel-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .channel-list li {
  padding-left: 16px;
  border-left: 1px solid var(--line-cyan);
  font-size: var(--fs-7);
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .channel-list strong {
  color: var(--gold);
  font-weight: 700;
}

.page-contact .msg-notes {
  border: 1px solid var(--line);
  background: var(--nebula);
  padding: 20px;
}

.page-contact .msg-notes h3 {
  font-size: var(--fs-6);
  margin: 0 0 14px;
  color: var(--cyan);
}

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

.page-contact .msg-list li {
  display: flex;
  gap: 12px;
  font-size: var(--fs-7);
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .msg-list .mono {
  flex: none;
  font-size: var(--fs-8);
  color: var(--galaxy);
  padding-top: 3px;
}

/* ---------- 本地服务 ---------- */
.page-contact .local-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-contact .local-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .local-copy p {
  font-size: var(--fs-7);
  line-height: 1.9;
  color: var(--ink);
  margin: 16px 0 0;
  max-width: 62ch;
}

.page-contact .local-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .local-points li {
  background: var(--teal);
  padding: 16px 18px;
  display: grid;
  gap: 8px;
  font-size: var(--fs-7);
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .lp-label {
  font-family: var(--font-mono);
  font-size: var(--fs-8);
  letter-spacing: 0.12em;
  color: var(--cyan);
}

/* ---------- 准备清单 ---------- */
.page-contact .prepare-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: clamp(24px, 3vw, 40px);
  align-items: start;
}

.page-contact .prepare-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 常见主题折叠 ---------- */
.page-contact .topic-list {
  margin-top: clamp(24px, 3vw, 40px);
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .topic-fold {
  background: var(--nebula);
}

.page-contact .topic-summary {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-6);
  font-weight: 600;
  color: var(--ink);
  transition: background 200ms var(--ease);
}

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

.page-contact .topic-summary:hover {
  background: rgba(123, 77, 255, 0.16);
}

.page-contact .topic-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--fs-6);
  color: var(--galaxy);
  line-height: 1;
}

.page-contact .topic-fold[open] > .topic-summary {
  background: rgba(75, 46, 158, 0.38);
  border-bottom: 1px solid var(--line);
}

.page-contact .topic-fold[open] > .topic-summary::after {
  content: "−";
  color: var(--cyan);
}

.page-contact .topic-index {
  flex: none;
  font-size: var(--fs-8);
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .topic-body {
  padding: 20px;
  font-size: var(--fs-7);
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .topic-body p {
  margin: 0 0 14px;
  max-width: 66ch;
}

.page-contact .topic-link {
  display: inline-block;
  font-size: var(--fs-7);
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .topic-link:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ---------- 收束轨道带 ---------- */
.page-contact .closing-note .closing-lede {
  margin: 16px 0 0;
  font-size: var(--fs-7);
  line-height: 1.85;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .closing-note .closing-lede a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-contact .closing-note .closing-lede a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.page-contact .rail-band {
  margin-top: clamp(26px, 3.5vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line-mid);
  border-top: 1px solid var(--line-mid);
  border-bottom: 1px solid var(--line-mid);
}

.page-contact .rail-item {
  background: var(--void);
  padding: 20px 18px;
  display: grid;
  gap: 10px;
  border-left: 2px solid transparent;
  transition: border-color 220ms var(--ease);
}

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

.page-contact .rail-label {
  font-family: var(--font-mono);
  font-size: var(--fs-8);
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-contact .rail-value {
  font-size: var(--fs-7);
  line-height: 1.75;
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .rail-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .local-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(32px, 4vw, 52px);
  }

  .page-contact .prepare-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(30px, 4vw, 52px);
  }
}

@media (min-width: 1024px) {
  .page-contact .ways-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 4vw, 52px);
  }
}

@media (max-width: 420px) {
  .page-contact .hero-tiles {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .hero-tile--wide {
    grid-column: span 1;
  }

  .page-contact .coord-value {
    font-size: var(--fs-7);
  }

  .page-contact .topic-summary {
    gap: 10px;
    padding: 16px;
    font-size: var(--fs-7);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .hero-tile,
  .page-contact .coord-card,
  .page-contact .rail-item,
  .page-contact .topic-summary,
  .page-contact .topic-link {
    transition: none;
  }
}