.page-contact {
  --pc-grid-line: rgba(33, 66, 76, 0.55);
  --pc-glow: rgba(25, 245, 208, 0.13);
  --pc-amber-glow: rgba(255, 178, 62, 0.12);
  position: relative;
}

/* ---------- 面包屑定位 ---------- */
.page-contact .contact-crumbs {
  position: relative;
  z-index: 2;
  padding-top: clamp(16px, 3vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-bottom: clamp(40px, 7vw, 80px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 62% at 92% 2%, var(--pc-glow), transparent 64%),
    radial-gradient(70% 50% at 6% 96%, var(--pc-amber-glow), transparent 70%),
    linear-gradient(180deg, #0b1420 0%, var(--ink) 82%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.3;
  background-image:
    repeating-linear-gradient(90deg, var(--pc-grid-line) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(0deg, var(--pc-grid-line) 0 1px, transparent 1px 76px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 72%);
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  padding-top: clamp(22px, 4vw, 40px);
}

.page-contact h1 {
  margin: clamp(14px, 2vw, 20px) 0 0;
  font-size: clamp(32px, 6.2vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--text);
  max-width: 18ch;
}

.page-contact .contact-lead {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-lines {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  max-width: 34em;
}

.page-contact .contact-line {
  display: grid;
  gap: 6px;
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .contact-value {
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.4vw, 31px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--cyan);
  text-decoration: none;
  word-break: break-word;
  transition: color var(--dur) var(--ease);
}

.page-contact a.contact-value:hover,
.page-contact a.contact-value:focus-visible {
  color: var(--cyan-soft);
  text-decoration: underline;
  text-underline-offset: 6px;
}

.page-contact .contact-line--phone .contact-value {
  color: var(--amber);
}

.page-contact .contact-line--phone a.contact-value:hover,
.page-contact .contact-line--phone a.contact-value:focus-visible {
  color: var(--amber-soft);
}

.page-contact .contact-hint {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-hours {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--text);
}

.page-contact .hours-dot {
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(25, 245, 208, 0.16);
}

.page-contact .contact-hero__aside {
  position: relative;
}

.page-contact .contact-figure {
  margin: 0;
}

.page-contact .contact-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--muted);
}

/* ---------- 联系前准备 ---------- */
.page-contact .contact-prep {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-contact .contact-prep__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}

.page-contact .prep-list {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-soft);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .prep-item:hover {
  border-color: var(--cyan);
  background: #0f1b25;
}

.page-contact .prep-num {
  font-family: var(--font-mono);
  font-size: 13px;
  padding-top: 3px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .prep-item h3 {
  margin: 0 0 4px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text);
}

.page-contact .prep-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 通道卡片 ---------- */
.page-contact .contact-channels {
  padding: clamp(48px, 7vw, 96px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--band) 0%, var(--ink) 100%);
}

.page-contact .contact-head {
  max-width: 60ch;
}

.page-contact .contact-head .section-lead {
  margin-top: 14px;
}

.page-contact .channel-grid {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 28px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  width: 44px;
  height: 3px;
  border-radius: 0 0 4px 4px;
  background: rgba(33, 66, 76, 0.9);
  transition: width var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .channel-card:hover {
  border-color: var(--cyan);
  background: #0f1b25;
}

.page-contact .channel-card:hover::before {
  width: 76px;
  background: var(--cyan);
}

.page-contact .channel-card--phone::before {
  background: rgba(255, 178, 62, 0.45);
}

.page-contact .channel-card--phone:hover {
  border-color: var(--amber);
}

.page-contact .channel-card--phone:hover::before {
  background: var(--amber);
}

.page-contact .channel-card h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.45;
  color: var(--text);
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.3vw, 19px);
  line-height: 1.5;
  color: var(--text);
  text-decoration: none;
  word-break: break-word;
  transition: color var(--dur) var(--ease);
}

.page-contact a.channel-value:hover,
.page-contact a.channel-value:focus-visible {
  color: var(--cyan-soft);
}

.page-contact .channel-value--plain {
  color: var(--amber-soft);
}

.page-contact .channel-card p {
  margin: 0;
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .channel-meta {
  margin-top: auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .channel-card--phone .channel-meta {
  color: var(--amber);
}

/* ---------- 适用场景 ---------- */
.page-contact .contact-scenes {
  padding: clamp(48px, 7vw, 96px) 0;
  border-top: 1px solid var(--line);
}

.page-contact .contact-scenes__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .contact-scenes__head {
  max-width: 42ch;
}

.page-contact .contact-scenes__head .section-lead {
  margin-top: 14px;
}

.page-contact .scene-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .scene-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 18px 6px;
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.page-contact .scene-item:hover {
  background: rgba(25, 245, 208, 0.05);
}

.page-contact .scene-index {
  font-family: var(--font-mono);
  font-size: 13px;
  padding-top: 4px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .scene-item h3 {
  margin: 0 0 5px;
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--text);
}

.page-contact .scene-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .scene-item a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .scene-item a:hover,
.page-contact .scene-item a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan);
}

/* ---------- 沟通建议 ---------- */
.page-contact .contact-advice {
  padding: clamp(48px, 7vw, 96px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(80% 60% at 6% 100%, var(--pc-glow), transparent 70%),
    var(--band);
}

.page-contact .advice-list {
  margin-top: clamp(22px, 3vw, 32px);
  display: grid;
  gap: 10px;
}

.page-contact .advice-item {
  border: 1px solid var(--line);
  border-radius: var(--r-soft);
  background: var(--panel);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .advice-item:hover,
.page-contact .advice-item[open] {
  border-color: rgba(25, 245, 208, 0.45);
}

.page-contact .advice-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 15px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

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

.page-contact .advice-item summary:hover {
  color: var(--cyan-soft);
}

.page-contact .advice-item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--amber);
}

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

.page-contact .advice-body {
  padding: 0 20px 18px;
}

.page-contact .advice-body p {
  margin: 0 0 10px;
  font-size: 14.8px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .advice-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 地址与备案信息带 ---------- */
.page-contact .contact-band {
  padding: clamp(44px, 6vw, 80px) 0 clamp(52px, 7vw, 88px);
}

.page-contact .band-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--line);
  overflow: hidden;
}

.page-contact .band-block {
  padding: 22px;
  background: var(--band);
  transition: background var(--dur) var(--ease);
}

.page-contact .band-block:hover {
  background: #101c26;
}

.page-contact .band-key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-contact .band-value {
  margin: 0;
  font-size: clamp(16px, 2.4vw, 20px);
  line-height: 1.6;
  color: var(--text);
}

.page-contact .band-value--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  color: var(--cyan);
}

.page-contact .band-block--note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .band-block--note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-contact .band-block--note a:hover,
.page-contact .band-block--note a:focus-visible {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan);
}

.page-contact .band-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 700px) {
  .page-contact .contact-lead {
    font-size: 17px;
  }

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

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

  .page-contact .band-block--note {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.86fr);
    align-items: start;
  }

  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-contact .contact-scenes__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

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

  .page-contact .band-grid {
    grid-template-columns: 1.4fr 0.9fr;
  }

  .page-contact .band-block--note {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-value,
  .page-contact .channel-card,
  .page-contact .channel-card::before,
  .page-contact .prep-item,
  .page-contact .scene-item,
  .page-contact .advice-item,
  .page-contact .band-block {
    transition: none;
  }
}