.page-contact {
  --pc-gap: clamp(16px, 3vw, 28px);
  --pc-pad: clamp(20px, 4vw, 40px);
  --pc-line: var(--edge-line);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏联系面板 ---------- */
.page-contact .contact-hero-section {
  padding-top: clamp(16px, 3vw, 28px);
}

.page-contact .contact-hero {
  display: grid;
  gap: var(--pc-gap);
  padding: var(--pc-pad);
  border: 1px solid var(--pc-line);
  border-radius: var(--radius-panel);
  background:
    radial-gradient(120% 90% at 90% -10%, rgba(154, 99, 255, 0.22), transparent 62%),
    radial-gradient(90% 70% at 0% 110%, rgba(20, 216, 182, 0.12), transparent 60%),
    linear-gradient(165deg, var(--panel-ink-2), var(--panel-ink) 72%);
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-violet) 22%, var(--arcade-teal) 68%, transparent);
  opacity: 0.85;
}

.page-contact .hero-main {
  min-width: 0;
}

.page-contact .hero-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--neon-violet);
  text-transform: uppercase;
}

.page-contact .hero-title {
  margin: 0 0 16px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper-white);
}

.page-contact .hero-lede {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: clamp(15px, 3.6vw, 17px);
  line-height: 1.78;
  color: var(--paper-mute);
}

/* ---------- 筛选胶囊 ---------- */
.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-contact .filter-btn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--pc-line);
  background: transparent;
  color: var(--paper-mute);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-contact .filter-btn:hover {
  color: var(--paper-white);
  border-color: var(--neon-violet);
}

.page-contact .filter-btn.is-active,
.page-contact .filter-btn[aria-pressed="true"] {
  background: var(--amber-warn);
  border-color: var(--amber-warn);
  color: #171006;
  font-weight: 700;
}

/* ---------- 受理事项 ---------- */
.page-contact .matter-list {
  display: grid;
  gap: 12px;
}

.page-contact .matter-item {
  padding: 18px 20px;
  border-radius: var(--radius-card);
  border: 1px solid var(--pc-line);
  border-left: 2px solid var(--neon-violet);
  background: rgba(13, 13, 20, 0.52);
  transition: border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-contact .matter-item:hover {
  border-color: var(--neon-violet);
  background: rgba(22, 22, 31, 0.86);
}

.page-contact .matter-item[hidden],
.page-contact .matter-item.is-hidden {
  display: none;
}

.page-contact .matter-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.page-contact .matter-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(17px, 4vw, 20px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper-white);
}

.page-contact .matter-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-mute);
}

.page-contact .matter-example {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 1px solid rgba(20, 216, 182, 0.4);
  font-size: 14px;
  line-height: 1.65;
  color: var(--arcade-teal);
}

/* ---------- 首屏侧栏 ---------- */
.page-contact .hero-side {
  display: grid;
  gap: 12px;
  align-content: start;
  min-width: 0;
}

.page-contact .side-card {
  padding: clamp(20px, 4vw, 28px);
  border-radius: var(--radius-card);
  border: 1px solid var(--pc-line);
  background:
    linear-gradient(180deg, rgba(20, 216, 182, 0.12), transparent 68%),
    var(--base-ink);
}

.page-contact .side-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--paper-mute);
  text-transform: uppercase;
}

.page-contact .side-num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(56px, 15vw, 84px);
  line-height: 0.88;
  color: var(--paper-white);
}

.page-contact .side-num span {
  font-family: var(--font-body);
  font-size: 0.24em;
  font-weight: 500;
  color: var(--arcade-teal);
  margin-left: 8px;
  letter-spacing: 0.08em;
  vertical-align: 0.35em;
}

.page-contact .side-note {
  margin: 16px 0 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper-mute);
}

.page-contact .side-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--neon-violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(154, 99, 255, 0.5);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .side-link:hover {
  color: var(--paper-white);
  border-color: var(--paper-white);
}

.page-contact .side-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--pc-line);
  background: var(--pc-line);
}

.page-contact .side-facts li {
  padding: 12px 16px;
  background: var(--panel-ink);
  font-size: 13px;
  color: var(--paper-mute);
}

.page-contact .side-facts .mono {
  font-family: var(--font-mono);
  font-size: 16px;
  font-variant-numeric: tabular-nums;
  color: var(--arcade-teal);
  margin-right: 6px;
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-layout {
  display: grid;
  gap: var(--pc-gap);
}

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

.page-contact .channel-item {
  padding: 20px;
  border-radius: var(--radius-card);
  border: 1px solid var(--pc-line);
  border-left: 2px solid var(--arcade-teal);
  background: var(--panel-ink);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-contact .channel-item:hover {
  border-color: var(--arcade-teal);
  transform: translateX(2px);
}

.page-contact .channel-label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--paper-mute);
}

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.8vw, 19px);
  line-height: 1.45;
  font-variant-numeric: tabular-nums;
  color: var(--paper-white);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-use {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-mute);
}

/* ---------- 提交要素 ---------- */
.page-contact .prep-layout {
  display: grid;
  gap: var(--pc-gap);
}

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

.page-contact .prep-card {
  padding: 20px;
  border-radius: var(--radius-card);
  border: 1px solid var(--pc-line);
  background: var(--panel-ink);
  transition: border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-contact .prep-card:hover {
  border-color: var(--neon-violet);
  transform: translateY(-2px);
}

.page-contact .prep-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--neon-violet);
  color: #0D0D14;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.page-contact .prep-title {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper-white);
}

.page-contact .prep-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-mute);
}

/* ---------- 地址与备案 ---------- */
.page-contact .registry-panel {
  padding: var(--pc-pad);
  border-radius: var(--radius-panel);
  border: 1px solid var(--pc-line);
  background: linear-gradient(180deg, var(--panel-ink-2), var(--panel-ink));
}

.page-contact .registry-grid {
  margin: 8px 0 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--pc-line);
}

.page-contact .registry-row {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .registry-row dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--paper-mute);
}

.page-contact .registry-row dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper-white);
  overflow-wrap: anywhere;
}

.page-contact .registry-row dd.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-contact .registry-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-mute);
}

/* ---------- 升级路径 ---------- */
.page-contact .escalate-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--pc-gap);
  position: relative;
}

.page-contact .escalate-step {
  position: relative;
  padding-top: 36px;
  min-width: 0;
}

.page-contact .step-dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1px solid var(--neon-violet);
  background: var(--base-ink);
  box-shadow: 0 0 0 4px rgba(154, 99, 255, 0.14);
}

.page-contact .step-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--neon-violet);
}

.page-contact .step-title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(17px, 4vw, 20px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper-white);
}

.page-contact .step-desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper-mute);
}

.page-contact .step-link {
  display: inline-block;
  font-size: 14px;
  color: var(--arcade-teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(20, 216, 182, 0.45);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .step-link:hover {
  color: var(--paper-white);
  border-color: var(--paper-white);
}

/* ---------- 入场动效 ---------- */
.page-contact [data-reveal].is-visible {
  animation: pc-rise 0.34s var(--ease) both;
}

@keyframes pc-rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal].is-visible {
    animation: none;
  }
  .page-contact .prep-card:hover,
  .page-contact .channel-item:hover {
    transform: none;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .registry-row {
    grid-template-columns: 200px 1fr;
    gap: 24px;
    align-items: baseline;
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.65fr) minmax(260px, 1fr);
    align-items: start;
  }

  .page-contact .channel-layout {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .prep-layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-contact .escalate-list::before {
    content: "";
    position: absolute;
    top: 11px;
    left: 4%;
    right: 4%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--edge-line) 10%, var(--edge-line) 90%, transparent);
  }
}

@media (min-width: 1200px) {
  .page-contact .prep-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}