.page-contact {
  --ct-paper-ink: #16130B;
  --ct-paper-sub: #5F5137;
}

.page-contact .ct-section {
  position: relative;
  padding-block: 48px;
}

.page-contact .ct-section--head {
  padding-block-start: 26px;
}

.page-contact .ct-section--last {
  padding-block-end: 72px;
}

.page-contact .ct-section--head::before {
  content: "";
  position: absolute;
  inset: -60px -12% auto auto;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle at center, rgba(59, 240, 220, .14), rgba(59, 240, 220, 0) 68%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .ct-section--head .shell {
  position: relative;
  z-index: 1;
}

/* ---------- 首屏导语 ---------- */
.page-contact .ct-lead {
  max-width: 780px;
  margin-block: 22px 34px;
}

.page-contact .ct-lead__tag {
  margin: 0;
}

.page-contact .ct-lead__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 60px);
  line-height: 1.06;
  letter-spacing: -.012em;
  margin: 14px 0 16px;
  color: var(--fog);
}

.page-contact .ct-lead__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--steel);
  max-width: 64ch;
}

/* ---------- 联系方式卡片 ---------- */
.page-contact .ct-contact-grid {
  display: grid;
  gap: 18px;
}

.page-contact .ct-cards {
  display: grid;
  gap: 14px;
}

.page-contact .paper-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 16px 15px 19px;
  background: var(--paper);
  color: var(--ct-paper-ink);
  border: 1px solid rgba(22, 19, 11, .14);
  border-radius: var(--radius);
  box-shadow: 0 14px 28px rgba(0, 0, 0, .38);
}

.page-contact .paper-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  border-radius: var(--radius) 0 0 var(--radius);
}

.page-contact .paper-card__k {
  margin: 0;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ct-paper-sub);
}

.page-contact .paper-card__v {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ct-paper-ink);
  word-break: break-word;
}

.page-contact .paper-card__v--mail {
  font-size: 13px;
  word-break: break-all;
}

.page-contact .paper-card__v--sm {
  font-size: 15px;
}

.page-contact .paper-card__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ct-paper-sub);
}

.page-contact .paper-card__btn {
  align-self: flex-start;
  margin-top: 2px;
  padding: 6px 12px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--ct-paper-ink);
  background: transparent;
  border: 1px solid rgba(22, 19, 11, .38);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .paper-card__btn:hover,
.page-contact .paper-card__btn:focus-visible {
  background: var(--ct-paper-ink);
  color: var(--paper);
}

.page-contact .paper-card__btn.is-done {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ct-paper-ink);
}

.page-contact .ct-visual {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.page-contact .ct-visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-contact .ct-visual figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

/* ---------- 响应时段 ---------- */
.page-contact .ct-window {
  display: grid;
  gap: 24px;
  margin-top: 26px;
}

.page-contact .ct-window h2 {
  margin-top: 0;
}

.page-contact .ct-priority {
  list-style: none;
  counter-reset: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .ct-priority li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .ct-priority li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .ct-priority .data-num {
  padding-top: 3px;
  font-size: 13px;
  color: var(--cyan);
}

.page-contact .ct-priority strong {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--fog);
}

.page-contact .ct-priority p {
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .ct-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.page-contact .ct-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 3;
  object-fit: cover;
}

.page-contact .ct-figure figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

/* ---------- 通用小节标题 ---------- */
.page-contact .ct-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.6vw, 40px);
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--fog);
  margin: 22px 0 10px;
}

.page-contact .ct-sub {
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
  max-width: 62ch;
}

/* ---------- 场景分流 ---------- */
.page-contact .ct-routes {
  display: grid;
  gap: 10px;
}

.page-contact .route-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: background 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .route-item[open] {
  background: var(--panel-2);
  border-color: var(--line);
}

.page-contact .route-item > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

.page-contact .route-item > summary::-webkit-details-marker {
  display: none;
}

.page-contact .route-item__no {
  font-size: 12px;
  color: var(--amber);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2px 7px;
}

.page-contact .route-item__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .01em;
  color: var(--fog);
  transition: color 180ms var(--ease);
}

.page-contact .route-item__hint {
  flex: 1 1 100%;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

.page-contact .route-item[open] .route-item__name {
  color: var(--cyan);
}

.page-contact .route-item__body {
  padding: 14px 18px 18px;
  margin-top: 2px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .route-item__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

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

.page-contact .route-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 240, 220, .42);
}

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

/* ---------- 合作与反馈 ---------- */
.page-contact .ct-partner {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-contact .ct-partner h2 {
  margin-top: 0;
}

.page-contact .ct-partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .ct-partner-list li {
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
}

.page-contact .ct-partner-list p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

/* ---------- 提交前的准备 ---------- */
.page-contact .ct-prep {
  list-style: none;
  counter-reset: ctprep;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-prep li {
  position: relative;
  padding: 16px 16px 18px 52px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(13, 20, 40, .92), rgba(5, 7, 15, .62));
}

.page-contact .ct-prep li::before {
  counter-increment: ctprep;
  content: counter(ctprep, decimal-leading-zero);
  position: absolute;
  left: 17px;
  top: 17px;
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--violet);
}

.page-contact .ct-prep strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--fog);
}

.page-contact .ct-prep p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .ct-prep a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 240, 220, .42);
}

/* ---------- 站点主体与备案 ---------- */
.page-contact .ct-entity {
  display: grid;
  gap: 22px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(154, 107, 255, .12), rgba(5, 7, 15, .2) 58%), var(--panel);
}

.page-contact .ct-entity__main h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 4vw, 34px);
  line-height: 1.14;
  color: var(--fog);
}

.page-contact .ct-entity__main p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--steel);
}

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

.page-contact .ct-entity__main a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 240, 220, .42);
}

.page-contact .ct-entity__main .data-num {
  color: var(--fog);
}

.page-contact .ct-entity__facts {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-entity__facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .ct-entity__facts > div:last-child {
  border-bottom: 0;
}

.page-contact .ct-entity__facts dt {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--steel);
}

.page-contact .ct-entity__facts dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--fog);
}

/* ---------- 自助路径 ---------- */
.page-contact .ct-self {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-contact .self-card {
  display: block;
  padding: 20px 18px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  text-decoration: none;
  color: inherit;
  transition: border-color 180ms var(--ease), background 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .self-card:hover,
.page-contact .self-card:focus-visible {
  border-color: var(--cyan);
  background: var(--panel-2);
  transform: translateY(-2px);
}

.page-contact .self-card__k {
  display: block;
  font-size: 12px;
  color: var(--violet);
}

.page-contact .self-card__t {
  display: block;
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  color: var(--fog);
}

.page-contact .self-card__d {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .ct-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 780px) {
  .page-contact .ct-self {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-entity {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 34px;
    padding: 28px 26px;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-section {
    padding-block: 76px;
  }

  .page-contact .ct-section--head {
    padding-block-start: 34px;
  }

  .page-contact .ct-contact-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 22px;
    align-items: start;
  }

  .page-contact .ct-window {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 36px;
    align-items: start;
  }

  .page-contact .ct-partner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .ct-figure {
    position: sticky;
    top: 96px;
  }

  .page-contact .route-item__hint {
    flex: 1 1 auto;
    text-align: right;
  }
}

@media (min-width: 1180px) {
  .page-contact .ct-section {
    padding-block: 92px;
  }

  .page-contact .ct-section--last {
    padding-block-end: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .self-card,
  .page-contact .paper-card__btn,
  .page-contact .route-item {
    transition: none;
  }

  .page-contact .self-card:hover,
  .page-contact .self-card:focus-visible {
    transform: none;
  }
}