.page-contact {
  --panel-clip: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}

/* ---------- 面包屑与首屏 ---------- */

.page-contact .breadcrumb {
  padding: 14px 0 0;
}

.page-contact .contact-hero {
  padding-top: 26px;
}

.page-contact .eyebrow {
  margin: 0;
  color: var(--cyan);
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

.page-contact .contact-hero-title {
  margin: 14px 0 0;
  max-width: 22em;
  font-family: var(--font-head);
  font-size: var(--step-64);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-hero-lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: var(--step-20);
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 三个联系面板 ---------- */

.page-contact .contact-panels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.page-contact .contact-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 30px 24px 24px;
  background: linear-gradient(155deg, var(--ink-700) 0%, var(--ink-800) 62%, var(--ink-900) 100%);
  clip-path: var(--panel-clip);
  overflow: hidden;
}

.page-contact .contact-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 62%;
  background: linear-gradient(180deg, var(--cyan), rgba(43, 227, 192, 0));
}

.page-contact .panel-index {
  position: absolute;
  top: 18px;
  right: 24px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .panel-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: var(--step-28);
  font-weight: 600;
  line-height: 1.3;
  color: var(--cyan-soft);
}

.page-contact .panel-value {
  margin: 0;
  font-family: var(--font-data);
  font-size: clamp(1rem, 0.45vw + 0.9rem, 1.4rem);
  line-height: 1.38;
  letter-spacing: -0.01em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-contact .panel-value--text {
  font-size: clamp(0.9375rem, 0.4vw + 0.85rem, 1.125rem);
  line-height: 1.6;
}

.page-contact .panel-desc {
  flex: 1;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .panel-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-contact .copy-btn {
  letter-spacing: 0.04em;
}

.page-contact .copy-status {
  min-height: 1em;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .panel-hint {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* ---------- 荧光连接线 ---------- */

.page-contact .contact-thread {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 26px;
}

.page-contact .contact-thread path {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.5;
  stroke-linejoin: round;
  stroke-linecap: round;
  opacity: 0.55;
}

/* ---------- 首屏图 ---------- */

.page-contact .contact-media {
  position: relative;
  display: block;
  margin: 34px auto 0;
  max-width: 1200px;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-800);
}

.page-contact .contact-media img,
.page-contact .coop-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 章节标记 ---------- */

.page-contact .section-head {
  margin: 0;
}

.page-contact .section-index {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .index-slash {
  flex: none;
  display: block;
  width: 3px;
  height: 18px;
  background: var(--cyan);
  border-radius: 2px;
  transform: rotate(12deg);
}

.page-contact .section-title {
  margin: 0;
  max-width: 26em;
  font-family: var(--font-head);
  font-size: var(--step-40);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-contact .section-note {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 两栏内容 ---------- */

.page-contact .layout-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 34px;
}

.page-contact .prose {
  min-width: 0;
}

.page-contact .prose p {
  margin: 0 0 1.4em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--paper);
}

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

.page-contact .prose a,
.page-contact .window-notes a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .prose a:hover,
.page-contact .window-notes a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 侧轨数据卡 ---------- */

.page-contact .rail {
  min-width: 0;
}

.page-contact .data-card {
  position: relative;
  padding: 22px 20px 22px 24px;
  background: var(--ink-800);
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-contact .data-label {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .check-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .check-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 10px;
  height: 2px;
  background: var(--cyan);
  transform: rotate(12deg);
}

/* ---------- 筛选与协作条目 ---------- */

.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 28px;
}

.page-contact .filter-btn {
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .filter-btn:hover {
  color: var(--paper);
  border-color: var(--cyan-soft);
}

.page-contact .filter-btn[aria-pressed="true"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .coop-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .coop-item {
  padding: 22px 20px;
  background: linear-gradient(180deg, rgba(18, 50, 42, 0.72), rgba(12, 33, 25, 0.72));
  border-left: 2px solid var(--line);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: border-color 0.3s var(--ease);
}

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

.page-contact .coop-item.is-filtered-out {
  display: none;
}

.page-contact .coop-item-label {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-contact .coop-item-title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: var(--step-20);
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .coop-item-text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .coop-media {
  position: relative;
  display: block;
  margin: 34px 0 0;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--ink-800);
}

/* ---------- 响应时段 ---------- */

.page-contact .service-window {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: center;
  margin-top: 38px;
}

.page-contact .window-ring {
  position: relative;
  width: min(250px, 62vw);
  margin: 0 auto;
  aspect-ratio: 1 / 1;
}

.page-contact .window-ring svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-contact .ring-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 2;
}

.page-contact .ring-active {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 3;
  stroke-dasharray: 146.08 243.48;
  stroke-dashoffset: -146.08;
  transform: rotate(-90deg);
  transform-origin: 70px 70px;
  filter: drop-shadow(0 0 8px rgba(43, 227, 192, 0.45));
}

.page-contact .window-core {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  text-align: center;
}

.page-contact .window-time {
  font-size: 1.15rem;
  letter-spacing: 0.05em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-contact .window-dash {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

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

.page-contact .window-notes li {
  position: relative;
  padding-left: 24px;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--paper);
}

.page-contact .window-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 11px;
  height: 2px;
  background: var(--cyan);
  transform: rotate(12deg);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .contact-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .contact-panel:first-child {
    grid-column: 1 / -1;
  }

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

@media (min-width: 860px) {
  .page-contact .contact-media {
    aspect-ratio: 1200 / 440;
  }

  .page-contact .coop-media {
    aspect-ratio: 1400 / 620;
  }

  .page-contact .service-window {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 52px;
  }
}

@media (min-width: 980px) {
  .page-contact .contact-panels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .contact-panel:first-child {
    grid-column: auto;
  }

  .page-contact .layout-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
    gap: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ring-active {
    filter: none;
  }
}