.page-contact {
  --contact-panel: rgba(16, 23, 36, 0.72);
  --contact-rule: rgba(213, 220, 228, 0.16);
  --contact-rule-strong: rgba(213, 220, 228, 0.3);
  display: block;
  color: var(--silver);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  margin-bottom: clamp(16px, 3vw, 26px);
}
.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(140, 153, 168, 0.55);
}
.page-contact .breadcrumbs a {
  color: var(--cyan);
  text-decoration: none;
}
.page-contact .breadcrumbs a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 18px 0 clamp(28px, 5vw, 56px);
  background:
    linear-gradient(180deg, rgba(34, 227, 214, 0.07), rgba(7, 11, 20, 0) 62%),
    var(--ink);
  overflow: hidden;
}
.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(140, 153, 168, 0.07) 0 1px,
    rgba(140, 153, 168, 0) 1px 34px
  );
  pointer-events: none;
}
.page-contact .contact-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__panel {
  position: relative;
  padding: clamp(24px, 5vw, 54px);
  background: linear-gradient(152deg, rgba(16, 23, 36, 0.96), rgba(7, 11, 20, 0.88));
  overflow: hidden;
}
.page-contact .contact-hero__cut {
  position: absolute;
  top: 0;
  right: 0;
  width: 76px;
  height: 76px;
  background: linear-gradient(225deg, rgba(34, 227, 214, 0.22), rgba(34, 227, 214, 0) 68%);
  pointer-events: none;
}

.page-contact h1 {
  margin: 10px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 8.4vw, 96px);
  line-height: 0.96;
  letter-spacing: 0.02em;
  color: var(--white);
}
.page-contact h2 {
  margin: 8px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--white);
}
.page-contact h3 {
  margin: 0 0 8px;
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--white);
}
.page-contact .lede {
  max-width: 58ch;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--silver);
}
.page-contact .prose {
  max-width: 66ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 页内索引 ---------- */
.page-contact .toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(22px, 4vw, 36px);
}
.page-contact .toc-link {
  display: inline-block;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--contact-rule);
  transition:
    color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}
.page-contact .toc-link:hover,
.page-contact .toc-link:focus-visible {
  color: var(--white);
  border-color: var(--contact-rule-strong);
}
.page-contact .toc-link[aria-current="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 区块骨架 ---------- */
.page-contact .contact-section {
  position: relative;
  padding: clamp(42px, 6.5vw, 92px) 0;
}
.page-contact .contact-section--band {
  background: linear-gradient(180deg, rgba(28, 38, 55, 0.6), rgba(7, 11, 20, 0) 92%);
  border-top: 1px solid var(--contact-rule);
  border-bottom: 1px solid var(--contact-rule);
}
.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3.6vw, 42px);
}

/* ---------- 联系方式一览 ---------- */
.page-contact .reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
}
.page-contact .reach-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
.page-contact .reach-item {
  padding: 20px 20px 22px;
  background: var(--contact-panel);
  border: 1px solid var(--contact-rule);
  border-left: 3px solid var(--steel);
  transition:
    border-left-color var(--t-base) var(--ease),
    background var(--t-base) var(--ease);
}
.page-contact .reach-item:hover {
  background: rgba(16, 23, 36, 0.95);
  border-left-color: var(--cyan);
}
.page-contact .reach-item--phone:hover {
  border-left-color: var(--orange);
}
.page-contact .reach-item__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.page-contact .reach-item__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(19px, 3.4vw, 32px);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}
.page-contact .reach-item--phone .reach-item__value {
  color: var(--orange);
}
.page-contact .reach-item--addr .reach-item__value {
  font-size: clamp(15px, 2vw, 19px);
  line-height: 1.7;
  color: var(--silver);
  letter-spacing: 0;
}
.page-contact .reach-item--time .reach-item__value {
  font-size: clamp(18px, 2.6vw, 24px);
  color: var(--white);
}
.page-contact .reach-item__note {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .media-frame {
  margin: 0;
}
.page-contact .media-frame--ratio {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--contact-rule);
  background: var(--graphite);
}
.page-contact .media-frame--ratio img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.62) contrast(1.06) brightness(0.86);
}
.page-contact .media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}
.page-contact .reach-map__overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.page-contact .reach-map__overlay .zone {
  fill: rgba(34, 227, 214, 0.1);
  stroke: var(--cyan);
  stroke-width: 1.5;
  pointer-events: auto;
  transition: fill var(--t-base) var(--ease);
}
.page-contact .reach-map__overlay .zone:hover {
  fill: rgba(34, 227, 214, 0.32);
}
.page-contact .reach-map .media-frame__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  margin: 0;
  padding: 4px 10px;
  background: rgba(7, 11, 20, 0.78);
}

/* ---------- 渠道筛选 ---------- */
.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-bottom: clamp(18px, 3vw, 28px);
}
.page-contact .filter-btn {
  appearance: none;
  cursor: pointer;
  padding: 9px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--contact-rule);
  transition:
    color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}
.page-contact .filter-btn:hover {
  color: var(--white);
  border-color: var(--contact-rule-strong);
}
.page-contact .filter-btn.is-current {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-contact .filter-btn:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .channel-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .channel-item {
  position: relative;
  padding: 22px 20px 24px;
  background: linear-gradient(160deg, rgba(28, 38, 55, 0.72), rgba(7, 11, 20, 0.62));
  border: 1px solid var(--contact-rule);
  transition: border-color var(--t-base) var(--ease);
}
.page-contact .channel-item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  background: linear-gradient(225deg, rgba(34, 227, 214, 0.55) 0 50%, rgba(34, 227, 214, 0) 50%);
}
.page-contact .channel-item:hover {
  border-color: var(--contact-rule-strong);
}
.page-contact .channel-item.is-filtered {
  display: none;
}
.page-contact .channel-item__tag {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  border: 1px solid var(--cyan-line);
}
.page-contact .channel-item[data-tags~="电话"] .channel-item__tag {
  color: var(--orange);
  border-color: var(--orange-line);
}
.page-contact .channel-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 合作与团体 ---------- */
.page-contact .coop-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}
.page-contact .board-stack {
  display: grid;
  gap: 10px;
}
.page-contact .board-stack summary.board__head {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.page-contact .board-stack summary::-webkit-details-marker {
  display: none;
}
.page-contact .board__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  flex: none;
}
.page-contact .board__content p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .coop-side {
  position: relative;
  padding: clamp(24px, 3.6vw, 36px);
  background: linear-gradient(150deg, rgba(28, 38, 55, 0.9), rgba(7, 11, 20, 0.82));
  border: 1px solid var(--contact-rule);
  border-top: 3px solid var(--orange);
}
.page-contact .coop-side__num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(52px, 9vw, 82px);
  line-height: 0.9;
  color: var(--orange);
}
.page-contact .coop-side__unit {
  margin: 6px 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.page-contact .coop-side__text {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 内容反馈 ---------- */
.page-contact .feedback-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}
.page-contact .feedback-points {
  margin: 22px 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-contact .feedback-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
  border-left: 1px solid var(--cyan-line);
}
.page-contact .feedback-points__key {
  display: inline-block;
  min-width: 44px;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}
.page-contact .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}
.page-contact .inline-link:hover {
  border-bottom-color: var(--cyan);
}
.page-contact .feedback-visual {
  border-radius: 0;
}

/* ---------- 到访与信函 ---------- */
.page-contact .visit-panel {
  position: relative;
  padding: clamp(24px, 4vw, 54px);
  background: linear-gradient(140deg, rgba(16, 23, 36, 0.95), rgba(7, 11, 20, 0.88));
  overflow: hidden;
}
.page-contact .visit-panel::after {
  content: "";
  position: absolute;
  top: -46%;
  right: -12%;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle, rgba(255, 122, 26, 0.16), rgba(255, 122, 26, 0) 66%);
  pointer-events: none;
}
.page-contact .visit-panel > * {
  position: relative;
  z-index: 1;
}
.page-contact .visit-facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
}
.page-contact .visit-facts > div {
  padding: 16px 18px;
  background: rgba(7, 11, 20, 0.55);
  border-left: 2px solid var(--steel);
}
.page-contact .visit-facts dt {
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.page-contact .visit-facts dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--silver);
  overflow-wrap: anywhere;
}

/* ---------- 桌面 ---------- */
@media (min-width: 720px) {
  .page-contact .channel-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .visit-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .reach-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
    align-items: start;
  }
  .page-contact .feedback-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

@media (min-width: 980px) {
  .page-contact .coop-layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}

@media (min-width: 1080px) {
  .page-contact .channel-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
  }
}