.page-contact {
  background: var(--paper);
  color: var(--ink-900);
}

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

/* ---------- 页头 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--line-white);
  padding: clamp(1.6rem, 4vw, 2.4rem) 0 clamp(2.4rem, 6vw, 4rem);
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  opacity: 0.3;
}

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

.page-contact .contact-hero__mesh {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(247, 249, 244, 0.09) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(247, 249, 244, 0.07) 0 1px, transparent 1px 88px);
}

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

.page-contact .contact-hero__inner {
  display: grid;
  gap: 0.9rem;
  max-width: 44rem;
  padding-top: 1.4rem;
}

.page-contact .contact-hero .breadcrumbs {
  color: rgba(247, 249, 244, 0.6);
}

.page-contact .contact-hero .breadcrumbs a {
  color: rgba(247, 249, 244, 0.6);
  text-decoration: none;
}

.page-contact .contact-hero .breadcrumbs a:hover,
.page-contact .contact-hero .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

.page-contact .contact-hero .eyebrow {
  color: var(--amber);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-size: clamp(1.85rem, 4.6vw, 3.1rem);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--line-white);
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(1rem, 1.6vw, 1.075rem);
  line-height: 1.85;
  color: rgba(247, 249, 244, 0.82);
}

/* ---------- 主体骨架 ---------- */
.page-contact .contact-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.4rem;
  padding: clamp(2.4rem, 6vw, 4.4rem) 0 clamp(2.4rem, 5vw, 3.4rem);
}

.page-contact .contact-main {
  display: grid;
  gap: clamp(2.6rem, 5.5vw, 3.8rem);
  min-width: 0;
}

.page-contact .contact-side {
  display: grid;
  gap: 1.2rem;
  align-content: start;
  min-width: 0;
}

.page-contact .contact-side {
  order: -1;
}

@media (min-width: 1000px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: 3.6rem;
    align-items: start;
  }

  .page-contact .contact-side {
    order: 0;
    position: sticky;
    top: calc(var(--nav-h) + 1.6rem);
  }
}

/* ---------- 章节块 ---------- */
.page-contact .c-block {
  min-width: 0;
}

.page-contact .c-block__head {
  display: grid;
  gap: 0.45rem;
  padding-bottom: 0.9rem;
  border-bottom: 2px solid var(--ink-900);
  margin-bottom: 1.4rem;
}

.page-contact .c-block__idx {
  font-family: var(--font-num);
  font-size: 0.76rem;
  letter-spacing: 0.22em;
  color: var(--amber);
}

.page-contact .c-block__title {
  margin: 0;
  font-size: clamp(1.3rem, 2.5vw, 1.72rem);
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-contact .c-block__text {
  margin: 0 0 1.4rem;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--ink-900);
}

.page-contact .c-block__text--follow {
  margin: 1.3rem 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
  padding-left: 0.9rem;
  border-left: 2px solid var(--amber);
}

/* ---------- 通道列表 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule-strong);
  border: 1px solid var(--rule-strong);
}

.page-contact .channel-list__item {
  display: grid;
  gap: 0.55rem;
  align-content: start;
  padding: 1.3rem 1.2rem 1.4rem;
  background: var(--line-white);
}

@media (min-width: 720px) {
  .page-contact .channel-list {
    grid-template-columns: 1fr 1fr;
  }
}

.page-contact .channel-list__tag {
  justify-self: start;
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  padding: 0.2rem 0.5rem;
  background: var(--cyan);
  color: var(--ink-900);
}

.page-contact .channel-list__tag--amber {
  background: var(--amber);
}

.page-contact .channel-list__name {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-contact .channel-list__desc {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 来意切换 ---------- */
.page-contact .prep-switch {
  position: relative;
  border: 1px solid var(--rule-strong);
  background: var(--line-white);
}

.page-contact .prep-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .prep-switch__tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--rule-strong);
}

.page-contact .prep-switch__tab {
  flex: 1 1 auto;
  min-width: 6.5rem;
  padding: 0.82rem 0.9rem;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--muted);
  cursor: pointer;
  border-right: 1px solid var(--rule);
  transition: background var(--t), color var(--t), box-shadow var(--t);
}

.page-contact .prep-switch__tab:last-child {
  border-right: 0;
}

.page-contact .prep-switch__tab:hover {
  color: var(--ink-900);
  background: var(--paper-dim);
}

.page-contact #prep-a:checked ~ .prep-switch__tabs .prep-switch__tab:nth-child(1),
.page-contact #prep-b:checked ~ .prep-switch__tabs .prep-switch__tab:nth-child(2),
.page-contact #prep-c:checked ~ .prep-switch__tabs .prep-switch__tab:nth-child(3) {
  color: var(--ink-900);
  background: var(--paper-dim);
  box-shadow: inset 0 -3px 0 var(--amber);
}

.page-contact .prep-switch__input:focus-visible ~ .prep-switch__tabs .prep-switch__tab {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-contact .prep-switch__pane {
  display: none;
  padding: 1.4rem 1.2rem 1.5rem;
}

.page-contact #prep-a:checked ~ .prep-switch__body .prep-switch__pane:nth-child(1),
.page-contact #prep-b:checked ~ .prep-switch__body .prep-switch__pane:nth-child(2),
.page-contact #prep-c:checked ~ .prep-switch__body .prep-switch__pane:nth-child(3) {
  display: block;
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-contact .prep-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 0.55rem;
  height: 2px;
  background: var(--cyan);
}

/* ---------- 数据表格 ---------- */
.page-contact .data-table__wrap {
  overflow-x: auto;
  border: 1px solid var(--rule-strong);
  -webkit-overflow-scrolling: touch;
}

.page-contact .data-table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.page-contact .data-table th {
  text-align: left;
  padding: 0.7rem 1rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  background: var(--ink-900);
  color: var(--line-white);
}

.page-contact .data-table td {
  padding: 0.8rem 1rem;
  border-top: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.65;
}

.page-contact .data-table tbody tr:nth-child(even) {
  background: var(--paper-dim);
}

.page-contact .data-table td:first-child {
  font-weight: 700;
  color: var(--ink-900);
}

/* ---------- 合作方向 ---------- */
.page-contact .partner-grid {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

@media (min-width: 760px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .partner-grid__card {
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding: 1.4rem 1.15rem 1.5rem;
  border: 1px solid var(--rule-strong);
  background: var(--line-white);
  transition: transform var(--t), border-color var(--t);
}

.page-contact .partner-grid__card:hover {
  transform: translateY(-4px);
  border-color: var(--ink-900);
}

.page-contact .partner-grid__no {
  font-family: var(--font-num);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--amber);
}

.page-contact .partner-grid__name {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 900;
}

.page-contact .partner-grid__desc {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .req-block {
  border-left: 3px solid var(--cyan);
  padding: 0.2rem 0 0.2rem 1.1rem;
}

.page-contact .req-block__title {
  margin: 0 0 0.8rem;
  font-size: 0.98rem;
  font-weight: 900;
  letter-spacing: 0.02em;
}

.page-contact .req-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-contact .req-list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .req-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--amber);
}

/* ---------- 本地服务 ---------- */
.page-contact .local-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-contact .local-list__item {
  display: grid;
  gap: 0.35rem;
  padding: 1rem 0;
  background: var(--paper);
}

@media (min-width: 640px) {
  .page-contact .local-list__item {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    gap: 1.2rem;
    align-items: baseline;
  }
}

.page-contact .local-list__key {
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .local-list__val {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- 联系卡片（窄栏） ---------- */
.page-contact .contact-card {
  padding: 1.5rem 1.3rem 1.4rem;
  background: var(--ink-900);
  color: var(--line-white);
  border: 1px solid var(--rule-dark-strong);
}

.page-contact .contact-card__label {
  margin: 0 0 1rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-contact .contact-card__list {
  margin: 0;
  display: grid;
}

.page-contact .contact-card__row {
  display: grid;
  gap: 0.3rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--rule-dark);
}

.page-contact .contact-card__row:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-card dt {
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: rgba(247, 249, 244, 0.55);
}

.page-contact .contact-card dd {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.6;
  word-break: break-word;
}

.page-contact .contact-card__mail {
  font-family: var(--font-num);
  font-size: 0.86rem;
  color: var(--cyan);
  word-break: break-all;
}

.page-contact .contact-card__num {
  font-family: var(--font-num);
  font-size: 1.32rem;
  letter-spacing: 0.02em;
  color: var(--line-white);
}

.page-contact .contact-card__note {
  margin: 1rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule-dark);
  font-size: 0.82rem;
  line-height: 1.7;
  color: rgba(247, 249, 244, 0.62);
}

/* ---------- 章节索引 ---------- */
.page-contact .chapter-rail {
  display: none;
}

@media (min-width: 1000px) {
  .page-contact .chapter-rail {
    display: grid;
    border-left: 1px solid var(--rule-strong);
  }
}

.page-contact .chapter-rail__link {
  display: block;
  padding: 0.5rem 0.9rem;
  font-size: 0.86rem;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color var(--t), border-color var(--t), background var(--t);
}

.page-contact .chapter-rail__link:hover,
.page-contact .chapter-rail__link:focus-visible {
  color: var(--ink-900);
  background: var(--paper-dim);
}

.page-contact .chapter-rail__link[data-active],
.page-contact .chapter-rail__link[aria-current="true"] {
  color: var(--ink-900);
  font-weight: 700;
  border-left-color: var(--cyan);
}

/* ---------- 响应流程 ---------- */
.page-contact .contact-flow {
  padding: clamp(2.6rem, 6vw, 4.4rem) 0;
}

.page-contact .c-block__head--dark {
  border-bottom-color: var(--rule-dark-strong);
}

.page-contact .c-block__head--dark .c-block__title {
  color: var(--line-white);
}

.page-contact .flow-figure {
  margin: 0 0 2.2rem;
  border: 1px solid var(--rule-dark-strong);
  overflow: hidden;
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: clamp(140px, 20vw, 230px);
  object-fit: cover;
}

.page-contact .flow-axis {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-contact .flow-axis__node {
  position: relative;
  display: grid;
  gap: 0.5rem;
  align-content: start;
  padding: 1.2rem 1.1rem 1.5rem;
  background: rgba(18, 58, 46, 0.7);
  border: 1px solid var(--rule-dark-strong);
  outline: none;
  transition: background var(--t), box-shadow var(--t);
}

.page-contact .flow-axis__node:hover,
.page-contact .flow-axis__node:focus-visible {
  background: rgba(18, 58, 46, 0.95);
  box-shadow: inset 0 0 0 1px var(--cyan);
}

.page-contact .flow-axis__num {
  font-family: var(--font-num);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-contact .flow-axis__name {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--line-white);
}

.page-contact .flow-axis__desc {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(247, 249, 244, 0.72);
}

.page-contact .flow-axis__tip {
  position: absolute;
  top: 0.85rem;
  right: 0.85rem;
  max-width: 12rem;
  padding: 0.28rem 0.5rem;
  font-family: var(--font-num);
  font-size: 0.68rem;
  line-height: 1.4;
  color: var(--ink-900);
  background: var(--cyan);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t), visibility var(--t);
}

.page-contact .flow-axis__node:hover .flow-axis__tip,
.page-contact .flow-axis__node:focus-visible .flow-axis__tip {
  opacity: 1;
  visibility: visible;
}

@media (min-width: 900px) {
  .page-contact .flow-axis {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--rule-dark-strong);
    border: 1px solid var(--rule-dark-strong);
  }

  .page-contact .flow-axis__node {
    border: 0;
  }
}

.page-contact .flow-note {
  margin: 1.8rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule-dark);
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(247, 249, 244, 0.66);
}

.page-contact .flow-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 198, 0.4);
}

.page-contact .flow-note a:hover,
.page-contact .flow-note a:focus-visible {
  border-bottom-color: var(--cyan);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }

  .page-contact .partner-grid__card:hover {
    transform: none;
  }
}
</main>