.page-contact {
  --pc-line: var(--line-400);
  --pc-gap: clamp(16px, 3vw, 28px);
  background: var(--ink-900);
  color: var(--paper);
  overflow-x: hidden;
  padding-bottom: clamp(48px, 8vw, 90px);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--steel);
}

.page-contact .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  transition: color var(--fast) var(--ease);
}

.page-contact .breadcrumb a:hover {
  color: var(--fox);
}

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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 4vw, 44px) 0 clamp(24px, 4.5vw, 52px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 82% at 84% 6%, rgba(255, 77, 28, 0.2), transparent 60%),
    radial-gradient(90% 70% at 4% 100%, rgba(45, 225, 194, 0.1), transparent 64%);
}

.page-contact .contact-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
}

.page-contact .hero-kicker {
  display: flex;
  align-items: center;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--live);
}

.page-contact h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.6vw, 60px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .hero-lede {
  max-width: 54ch;
  margin: 0 0 clamp(20px, 3vw, 28px);
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.78;
  color: var(--steel);
}

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

.page-contact .dot-live {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--live);
  vertical-align: middle;
  animation: pc-breathe 2.6s var(--ease) infinite;
}

@keyframes pc-breathe {
  0%, 100% { box-shadow: 0 0 0 0 rgba(45, 225, 194, 0.55); }
  50% { box-shadow: 0 0 0 7px rgba(45, 225, 194, 0); }
}

/* ---------- 框景联系面板 ---------- */
.page-contact .hero-panel {
  position: relative;
  padding: clamp(20px, 3.4vw, 32px);
  border: 1px solid var(--line-400);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(160deg, var(--ink-700), var(--ink-800) 72%);
  overflow: hidden;
}

.page-contact .hero-panel::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(232, 226, 214, 0.08);
  border-radius: calc(var(--radius-lg) - 10px);
  pointer-events: none;
}

.page-contact .panel-flag {
  display: flex;
  align-items: center;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--live);
}

.page-contact .panel-block {
  padding: 16px 0;
  border-top: 1px solid var(--line-400);
}

.page-contact .panel-block:first-of-type {
  border-top: 0;
  padding-top: 4px;
}

.page-contact .panel-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .contact-mail {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(14px, 3.1vw, 18.5px);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--paper);
  word-break: break-all;
  user-select: all;
}

.page-contact .contact-phone {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: clamp(28px, 7vw, 40px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--amber);
  user-select: all;
}

.page-contact .panel-hint {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--steel);
}

.page-contact .hero-map {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 18px;
}

.page-contact .map-road {
  fill: none;
  stroke: var(--line-600);
  stroke-width: 1.5;
  opacity: 0.85;
}

.page-contact .map-road--thin {
  stroke-dasharray: 4 7;
  opacity: 0.45;
}

.page-contact .map-link {
  fill: none;
  stroke: var(--fox);
  stroke-width: 2;
}

.page-contact .map-node {
  fill: var(--live);
}

.page-contact .map-pulse {
  fill: none;
  stroke: var(--live);
  stroke-width: 1.5;
  opacity: 0.4;
  transform-box: fill-box;
  transform-origin: center;
  animation: pc-pulse 2.6s var(--ease) infinite;
}

@keyframes pc-pulse {
  0%, 100% { transform: scale(0.7); opacity: 0.5; }
  50% { transform: scale(1.35); opacity: 0; }
}

/* ---------- 横幅图 ---------- */
.page-contact .contact-banner-wrap {
  margin-bottom: clamp(12px, 3vw, 26px);
}

.page-contact .contact-banner {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 章节通用 ---------- */
.page-contact .contact-section {
  padding: clamp(34px, 6vw, 66px) 0;
}

.page-contact .contact-section--meta {
  padding-bottom: 0;
}

.page-contact .visually-hidden-title {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 联系方式列表 ---------- */
.page-contact .channel-list {
  border-top: 1px solid var(--pc-line);
}

.page-contact .channel-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: clamp(18px, 3vw, 26px) 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .channel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .channel-value {
  margin: 0;
  font-size: clamp(18px, 2.6vw, 24px);
  line-height: 1.45;
  color: var(--paper);
}

.page-contact .channel-value.mono {
  font-family: var(--font-mono);
  word-break: break-all;
}

.page-contact .channel-note {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 反馈区 ---------- */
.page-contact .feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
}

.page-contact .tab-list {
  display: flex;
  gap: 8px;
  padding: 4px 0 12px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-contact .tab {
  flex: 0 0 auto;
  padding: 10px 18px;
  border: 1px solid var(--line-400);
  border-radius: var(--radius-pill);
  background: var(--ink-700);
  color: var(--steel);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
  transition: background var(--fast) var(--ease), color var(--fast) var(--ease), border-color var(--fast) var(--ease);
}

.page-contact .tab:hover {
  color: var(--paper);
  border-color: var(--line-600);
}

.page-contact .tab[aria-selected="true"] {
  background: var(--fox);
  border-color: var(--fox);
  color: var(--ink-900);
  font-weight: 600;
}

.page-contact .tab:focus-visible {
  outline: 2px solid var(--live);
  outline-offset: 2px;
}

.page-contact .tab-panel {
  padding-top: 18px;
  border-top: 1px solid var(--pc-line);
}

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

.page-contact .tab-panel:focus-visible {
  outline: 2px solid var(--live);
  outline-offset: 4px;
}

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

.page-contact .panel-points li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-contact .point-key {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--live);
  white-space: nowrap;
}

.page-contact .point-val {
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--paper);
}

/* ---------- 反馈模板折叠 ---------- */
.page-contact .feedback-template {
  margin-top: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line-400);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .feedback-template summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  font-size: 15.5px;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .feedback-template summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--fox);
}

.page-contact .feedback-template[open] summary::after {
  content: "−";
}

.page-contact .feedback-template summary:focus-visible {
  outline: 2px solid var(--live);
  outline-offset: -2px;
}

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

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

.page-contact .template-steps li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--steel);
}

.page-contact .step-no {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
}

/* ---------- 反馈配图 ---------- */
.page-contact .feedback-figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .feedback-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 回复时间 ---------- */
.page-contact .window-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .window-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .window-key {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-contact .window-val {
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--paper);
}

/* ---------- 合作面板 ---------- */
.page-contact .partner-panel {
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid rgba(255, 77, 28, 0.34);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 77, 28, 0.16), rgba(255, 77, 28, 0.02) 58%, transparent);
}

.page-contact .partner-lede {
  max-width: 62ch;
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-size: clamp(16px, 1.8vw, 18px);
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .partner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 0 18px;
}

.page-contact .partner-note {
  max-width: 62ch;
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid rgba(232, 226, 214, 0.14);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 备案与相关页面 ---------- */
.page-contact .meta-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 40px);
  padding-top: clamp(22px, 4vw, 34px);
  border-top: 1px solid var(--pc-line);
}

.page-contact .meta-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-contact .meta-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .meta-note {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-contact .meta-links a {
  font-size: 15px;
  line-height: 1.6;
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--fast) var(--ease);
}

.page-contact .meta-links a:hover {
  color: var(--fox-warm);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .channel-item {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: baseline;
    gap: 6px 28px;
  }

  .page-contact .channel-label {
    grid-row: 1 / span 2;
  }

  .page-contact .window-list li {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    align-items: start;
    gap: clamp(30px, 4vw, 58px);
  }

  .page-contact .meta-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(30px, 5vw, 68px);
  }
}

@media (min-width: 1000px) {
  .page-contact .feedback-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(30px, 4vw, 58px);
  }

  .page-contact .feedback-figure {
    position: sticky;
    top: 108px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .dot-live,
  .page-contact .map-pulse {
    animation: none;
  }

  .page-contact .map-pulse {
    opacity: 0.35;
  }
}