.page-contact {
  --contact-gap: clamp(1.125rem, 2.6vw, 1.75rem);
  --contact-block: clamp(2.5rem, 6vw, 4.5rem);
  --contact-border-hi: rgba(59, 240, 208, .5);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.75rem, 4vw, 3rem) var(--contact-block);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.page-contact .contact-hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .22;
  filter: saturate(.7);
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(115% 85% at 18% 6%, rgba(59, 240, 208, .10), rgba(6, 10, 28, 0) 58%),
    linear-gradient(180deg, rgba(6, 10, 28, .62) 0%, rgba(6, 10, 28, .92) 46%, var(--xk-ink) 92%);
}

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

.page-contact .contact-hero__title {
  margin: .5rem 0 0;
  max-width: 14ch;
}

.page-contact .contact-hero__lead {
  margin-top: clamp(1.1rem, 2.4vw, 1.75rem);
  max-width: 42ch;
}

/* ---------- 联络卡 ---------- */
.page-contact .contact-cards {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(2.25rem, 5vw, 3.5rem);
}

.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  padding: clamp(1.4rem, 3vw, 2.1rem);
  background: var(--xk-night);
  border: 1px solid var(--xk-line);
  border-radius: var(--xk-radius-l);
  transition: border-color .35s var(--xk-ease), box-shadow .35s var(--xk-ease), transform .35s var(--xk-ease);
}

.page-contact .contact-card--mail {
  background:
    linear-gradient(180deg, rgba(59, 240, 208, .09), rgba(12, 18, 48, 0) 62%),
    var(--xk-night);
}

.page-contact .contact-card--phone {
  background:
    linear-gradient(180deg, rgba(255, 138, 60, .07), rgba(12, 18, 48, 0) 60%),
    var(--xk-night);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  border-color: var(--contact-border-hi);
  box-shadow: 0 0 0 1px rgba(59, 240, 208, .16), 0 30px 70px -40px rgba(59, 240, 208, .55);
  transform: translateY(-3px);
}

.page-contact .contact-card__title {
  margin: 0;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--xk-white);
}

.page-contact .contact-card__value {
  margin: 0;
  color: var(--xk-cyan);
  line-height: 1.5;
}

.page-contact .contact-card__value--mono {
  font-family: var(--xk-font-mono);
  font-size: clamp(.95rem, 1.5vw, 1.0625rem);
  letter-spacing: .01em;
  word-break: break-all;
}

.page-contact .contact-card__value--lg {
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  letter-spacing: .04em;
}

.page-contact .contact-card__value--text {
  color: var(--xk-white);
  font-size: .98rem;
  line-height: 1.7;
}

.page-contact .contact-card__text {
  margin: 0;
  color: var(--xk-gray);
  font-size: .9375rem;
  line-height: 1.75;
}

.page-contact .contact-card__actions {
  margin-top: auto;
  padding-top: .6rem;
}

.page-contact .contact-card .xk-btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 880px) {
  .page-contact .contact-cards {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .contact-card .xk-btn {
    width: auto;
  }
}

/* ---------- 准备清单 ---------- */
.page-contact .contact-prep .xk-section__head {
  max-width: 46ch;
}

.page-contact .prep-list {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: .875rem;
}

.page-contact .prep-item__label {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.05rem 1.2rem;
  background: var(--xk-night);
  border: 1px solid var(--xk-line);
  border-radius: var(--xk-radius-m);
  cursor: pointer;
  transition: border-color .3s var(--xk-ease), background .3s var(--xk-ease);
}

.page-contact .prep-item__label:hover {
  border-color: rgba(59, 240, 208, .38);
  background: rgba(12, 18, 48, .92);
}

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

.page-contact .prep-item__mark {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--xk-obs);
  border-radius: 7px;
  display: grid;
  place-items: center;
  transition: background .25s var(--xk-ease), border-color .25s var(--xk-ease);
}

.page-contact .prep-item__mark::after {
  content: "";
  width: 10px;
  height: 6px;
  margin-top: -2px;
  border-left: 2px solid var(--xk-ink);
  border-bottom: 2px solid var(--xk-ink);
  transform: rotate(-45deg) scale(.35);
  opacity: 0;
  transition: opacity .25s var(--xk-ease), transform .25s var(--xk-ease);
}

.page-contact .prep-item__box:checked + .prep-item__mark {
  background: var(--xk-cyan);
  border-color: var(--xk-cyan);
}

.page-contact .prep-item__box:checked + .prep-item__mark::after {
  opacity: 1;
  transform: rotate(-45deg) scale(1);
}

.page-contact .prep-item__box:focus-visible + .prep-item__mark {
  box-shadow: 0 0 0 3px rgba(59, 240, 208, .32);
}

.page-contact .prep-item__box:checked ~ .prep-item__body {
  opacity: .58;
}

.page-contact .prep-item__body {
  transition: opacity .25s var(--xk-ease);
}

.page-contact .prep-item__title {
  display: block;
  margin-bottom: .3rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--xk-white);
}

.page-contact .prep-item__text {
  display: block;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--xk-gray);
}

.page-contact .prep-tail {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  max-width: 52ch;
}

@media (min-width: 760px) {
  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 受理节奏 ---------- */
.page-contact .contact-response {
  position: relative;
}

.page-contact .contact-response::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, rgba(59, 240, 208, .5), rgba(154, 107, 255, .28) 46%, rgba(27, 38, 87, 0) 96%);
}

.page-contact .timeline {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  display: grid;
}

.page-contact .timeline__row {
  display: grid;
  gap: .4rem;
  padding-block: 1.3rem;
  border-bottom: 1px solid var(--xk-line);
}

.page-contact .timeline__row:first-child {
  border-top: 1px solid var(--xk-line);
}

.page-contact .timeline__key {
  font-size: .8125rem;
  letter-spacing: .12em;
  color: var(--xk-violet);
}

.page-contact .timeline__val {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--xk-white);
  max-width: 46ch;
}

@media (min-width: 820px) {
  .page-contact .timeline__row {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: baseline;
    gap: 2.5rem;
  }
}

/* ---------- 合作与赛事接入 ---------- */
.page-contact .contact-access__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-contact .contact-access__body .xk-heading {
  margin-top: .5rem;
}

.page-contact .contact-access__body .xk-prose {
  margin-top: 1.25rem;
}

.page-contact .contact-access__sub {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 .9rem;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--xk-cyan);
}

.page-contact .access-materials {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-contact .access-materials li {
  position: relative;
  padding-left: 1.4rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--xk-gray);
}

.page-contact .access-materials li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: var(--xk-violet);
  transform: rotate(45deg);
}

.page-contact .access-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-contact .access-step {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.15rem;
  border: 1px solid var(--xk-line);
  border-radius: var(--xk-radius-m);
  background: rgba(12, 18, 48, .72);
}

.page-contact .access-step__no {
  flex: 0 0 auto;
  color: var(--xk-cyan);
  font-size: 1rem;
  letter-spacing: .06em;
}

.page-contact .access-step__text {
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--xk-white);
}

.page-contact .contact-access__note {
  margin-top: clamp(1.5rem, 3.5vw, 2.25rem);
  max-width: 52ch;
}

.page-contact .contact-access__figure {
  margin: 0;
  display: grid;
  gap: 1rem;
}

.page-contact .access-map {
  width: 100%;
  height: auto;
  max-height: 260px;
  border: 1px solid var(--xk-line);
  border-radius: var(--xk-radius-l);
  background: radial-gradient(80% 70% at 50% 40%, rgba(27, 38, 87, .55), rgba(6, 10, 28, .9));
  padding: 1rem;
  box-sizing: border-box;
}

.page-contact .access-map__edges path {
  fill: none;
  stroke: rgba(148, 163, 200, .35);
  stroke-width: 1.4;
  stroke-dasharray: 4 5;
}

.page-contact .access-map__node {
  fill: var(--xk-violet);
}

.page-contact .access-map__hub {
  fill: var(--xk-cyan);
}

.page-contact .access-map__out {
  fill: var(--xk-amber);
}

.page-contact .contact-access__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--xk-radius-l);
  border: 1px solid var(--xk-line);
}

.page-contact .contact-access__figure .xk-media__caption {
  margin-top: .6rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--xk-gray);
}

@media (min-width: 980px) {
  .page-contact .contact-access__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

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

/* ---------- 地址与备案条 ---------- */
.page-contact .wherebar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  padding: clamp(1.25rem, 3vw, 1.75rem) clamp(1.25rem, 3.2vw, 2.25rem);
  border: 1px solid var(--xk-obs);
  border-radius: var(--xk-radius-l);
  background:
    linear-gradient(120deg, rgba(59, 240, 208, .07), rgba(6, 10, 28, 0) 55%),
    var(--xk-night);
}

.page-contact .wherebar__item {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  min-width: 0;
}

.page-contact .wherebar__item--addr {
  flex: 1 1 18rem;
}

.page-contact .wherebar__key {
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--xk-gray);
}

.page-contact .wherebar__val {
  font-size: .9375rem;
  line-height: 1.65;
  color: var(--xk-white);
  overflow-wrap: anywhere;
}

.page-contact .wherebar__copy {
  flex: 0 0 auto;
}

.page-contact .contact-where__note {
  margin-top: 1rem;
  max-width: 56ch;
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .prep-item__label,
  .page-contact .prep-item__mark,
  .page-contact .prep-item__body {
    transition: none;
  }

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