.page-contact {
  --contact-card-bg: linear-gradient(155deg, #10263A 0%, #0A1726 68%);
  --contact-dash: rgba(201, 210, 218, 0.26);
  --contact-gap: clamp(2.6rem, 6vw, 4.5rem);
  color: var(--silver);
}

/* 面包屑 */
.page-contact .breadcrumbs {
  padding-block: 1.25rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--graphite);
}
.page-contact .breadcrumbs a {
  color: var(--green-text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  border-bottom-color: var(--green);
}
.page-contact .breadcrumbs span {
  margin-inline: 0.4rem;
}
.page-contact .breadcrumbs [aria-current="page"] {
  color: var(--silver);
}

/* 布局骨架 */
.page-contact .contact-layout {
  display: flex;
  flex-direction: column;
  gap: clamp(2rem, 5vw, 3.5rem);
  padding-block: clamp(1rem, 3vw, 2rem) clamp(3.5rem, 8vw, 6.5rem);
}

/* 首屏文字 */
.page-contact .contact-intro {
  max-width: 44rem;
}
.page-contact .contact-intro .display {
  font-size: clamp(2.1rem, 4.6vw, 3.5rem);
  color: var(--paper);
  margin: 0.7rem 0 1rem;
}
.page-contact .lede {
  color: var(--silver);
  font-size: clamp(0.98rem, 1.3vw, 1.08rem);
  line-height: 1.85;
  margin: 0;
}
.page-contact .body-copy {
  margin: 1.6rem 0 0;
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--silver);
  max-width: 46rem;
}

/* 分区跳转 */
.page-contact .jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.7rem;
  margin-top: 1.6rem;
  padding-top: 1.3rem;
  border-top: 1px solid var(--line);
}
.page-contact .jump-nav a {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--green-text);
  text-decoration: none;
  padding: 0.38rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}
.page-contact .jump-nav a:hover,
.page-contact .jump-nav a:focus-visible {
  background: rgba(0, 224, 138, 0.09);
  border-color: var(--green);
  color: var(--paper);
}

/* 斜切联系卡 */
.page-contact .contact-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--contact-card-bg);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 2.6%, 100% 100%, 0 97.4%);
  box-shadow: 14px 20px 0 rgba(0, 0, 0, 0.3);
}
.page-contact .contact-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 15%;
  width: 3px;
  height: 24%;
  background: var(--green);
  z-index: 2;
}
.page-contact .contact-card__plate {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.16;
}
.page-contact .contact-card__plate img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-contact .contact-card__inner {
  position: relative;
  margin: 10px;
  padding: clamp(1.15rem, 3vw, 1.6rem);
  border: 1px dashed var(--contact-dash);
}
.page-contact .contact-card .annotation {
  color: var(--green-text);
}
.page-contact .contact-card .h3 {
  margin: 0.55rem 0 0;
}
.page-contact .contact-list {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.15rem;
}
.page-contact .contact-row {
  display: grid;
  gap: 0.32rem;
}
.page-contact .contact-row__label {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
}
.page-contact .contact-row__value {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .contact-row__value.mono {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}
.page-contact .copy-btn {
  justify-self: start;
  margin-top: 0.3rem;
  font-size: 0.74rem;
}
.page-contact .contact-card__note {
  margin: 1.35rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--graphite);
}

/* 右侧分区流 */
.page-contact .contact-flow {
  display: grid;
  gap: var(--contact-gap);
  min-width: 0;
}
.page-contact .contact-sec {
  scroll-margin-top: calc(var(--top-h) + 24px);
}
.page-contact .section-head .h2 {
  margin: 0.6rem 0 0.8rem;
}
.page-contact .h2 {
  color: var(--paper);
}
.page-contact .h3 {
  color: var(--paper);
  margin: 0 0 0.7rem;
}
.page-contact .contact-sec p {
  line-height: 1.85;
}

/* 分段标签 */
.page-contact .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
  margin-top: 1.6rem;
  border-bottom: 1px solid var(--line);
}
.page-contact .tab {
  appearance: none;
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  color: var(--graphite);
  font: inherit;
  font-size: 0.84rem;
  padding: 0.68rem 0.9rem;
  cursor: pointer;
  border-radius: 0;
  text-align: left;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}
.page-contact .tab:hover {
  color: var(--silver);
}
.page-contact .tab[aria-selected="true"] {
  color: var(--paper);
  border-left-color: var(--green);
  background: rgba(0, 224, 138, 0.07);
}
.page-contact .tab:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
.page-contact .tab-panel {
  padding-top: 1.4rem;
  animation: contact-fade 0.18s ease both;
}
@keyframes contact-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 要点列表 */
.page-contact .bullet-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.page-contact .bullet-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--silver);
}
.page-contact .bullet-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 7px;
  height: 1px;
  background: var(--green);
}

/* 横向条带 */
.page-contact .strip {
  display: grid;
  gap: 1px;
  margin-top: 1.6rem;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-contact .strip__cell {
  background: var(--ink-800);
  padding: 1.1rem 1.15rem;
  display: grid;
  gap: 0.4rem;
}
.page-contact .strip__num {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--green);
}
.page-contact .strip__label {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--graphite);
}

/* 图片容器 */
.page-contact .media-frame {
  margin: 1.9rem 0 1.6rem;
  padding: 6px;
  background: var(--ink-800);
  border: 1px solid var(--line);
}
.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .media-frame__caption {
  display: block;
  padding: 0.62rem 0.4rem 0.1rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

/* 节点连线 */
.page-contact .node-map {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.05rem;
}
.page-contact .node-map::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 1px;
  background: var(--line);
}
.page-contact .node-map__item {
  position: relative;
  padding-left: 1.3rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.65rem;
  font-size: 0.89rem;
  color: var(--silver);
}
.page-contact .node-map__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 3px rgba(0, 224, 138, 0.14);
}
.page-contact .node-map__num {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--graphite);
}
.page-contact .node-map__name {
  color: var(--paper);
  font-weight: 600;
}
.page-contact .node-map__note {
  font-size: 0.78rem;
  color: var(--graphite);
}

/* 两栏说明 */
.page-contact .split-two {
  display: grid;
  gap: 1px;
  margin-top: 1.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-contact .mini {
  background: var(--ink-800);
  padding: clamp(1.15rem, 2.6vw, 1.7rem);
}
.page-contact .mini p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--silver);
}
.page-contact .mini .tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.16em;
}
.page-contact .mini .h3 {
  margin: 0.85rem 0 0.6rem;
  font-size: 1.05rem;
}

/* 站点身份 */
.page-contact .id-list {
  margin: 1.6rem 0 1.4rem;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-contact .id-list > div {
  background: var(--ink-900);
  padding: 1rem 1.15rem;
}
.page-contact .id-list dt {
  margin: 0 0 0.4rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--graphite);
}
.page-contact .id-list dd {
  margin: 0;
  font-size: 0.92rem;
  color: var(--paper);
  overflow-wrap: anywhere;
}
.page-contact .id-list dd.mono {
  letter-spacing: 0.05em;
}
.page-contact .notice {
  margin: 0;
  padding: 1rem 1.15rem;
  border-left: 3px solid var(--amber);
  background: rgba(255, 165, 48, 0.07);
  color: var(--paper);
  font-size: 0.89rem;
  line-height: 1.85;
}

/* 自助入口 */
.page-contact .next-links {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}
.page-contact .next-links a {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.4rem 1rem;
  padding: 1rem 1.1rem;
  background: var(--ink-900);
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background-color 0.18s ease, color 0.18s ease;
}
.page-contact .next-links a:hover,
.page-contact .next-links a:focus-visible {
  background: var(--ink-800);
  color: var(--green);
}
.page-contact .next-links .mono {
  font-weight: 400;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

/* 响应式 */
@media (min-width: 760px) {
  .page-contact .strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .split-two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .id-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-contact .contact-layout {
    display: grid;
    grid-template-columns: minmax(258px, 336px) minmax(0, 1fr);
    column-gap: clamp(2rem, 4vw, 4rem);
    row-gap: clamp(2.4rem, 5vw, 3.6rem);
    align-items: start;
  }
  .page-contact .contact-intro {
    grid-column: 2;
    grid-row: 1;
  }
  .page-contact .contact-card {
    grid-column: 1;
    grid-row: 1 / span 2;
    position: sticky;
    top: calc(var(--top-h) + 1.5rem);
  }
  .page-contact .contact-flow {
    grid-column: 2;
    grid-row: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tab-panel {
    animation: none;
  }
  .page-contact .jump-nav a,
  .page-contact .tab,
  .page-contact .next-links a {
    transition: none;
  }
}