.page-contact {
  --co-line-dark: rgba(168, 243, 236, 0.22);
  --co-line-light: rgba(4, 16, 31, 0.12);
  --co-paper-card: #FFFFFF;
  background: var(--color-midnight);
  color: var(--color-paper);
  overflow-x: clip;
}

.page-contact .section {
  padding: clamp(46px, 8vw, 92px) 0;
}

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

.page-contact .section--dark {
  background: linear-gradient(180deg, var(--color-midnight) 0%, var(--color-stand) 55%, var(--color-midnight) 100%);
  color: var(--color-paper);
}

.page-contact .section--stand {
  background: var(--color-stand);
  color: var(--color-paper);
}

.page-contact .section--edge {
  background: linear-gradient(175deg, var(--color-stand) 0%, var(--color-midnight) 45%, #04101F 100%);
  color: var(--color-paper);
}

.page-contact .section-head {
  max-width: 720px;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-contact .chapter-label {
  color: var(--color-sunset);
  margin: 0 0 12px;
}

.page-contact .section--dark .chapter-label,
.page-contact .section--stand .chapter-label,
.page-contact .section--edge .chapter-label {
  color: var(--color-neon);
}

.page-contact .headline {
  color: inherit;
  margin: 0 0 16px;
}

.page-contact .section--paper .body-text,
.page-contact .section--paper .small-note {
  color: rgba(4, 16, 31, 0.78);
}

.page-contact .co-intro {
  max-width: 62ch;
  margin: 0;
}

.page-contact .co-intro--dark {
  color: var(--color-mist);
  opacity: 0.88;
}

/* ---------- 首屏 ---------- */

.page-contact .co-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(30px, 6vw, 54px) 0 clamp(34px, 6vw, 60px);
  background:
    radial-gradient(120% 90% at 88% -12%, rgba(37, 225, 208, 0.20), transparent 62%),
    linear-gradient(165deg, var(--color-midnight) 0%, var(--color-stand) 76%, var(--color-midnight) 100%);
}

.page-contact .co-hero__beam {
  position: absolute;
  top: -25%;
  right: -22%;
  width: 58%;
  height: 155%;
  z-index: -1;
  background: linear-gradient(180deg, rgba(37, 225, 208, 0.18), rgba(140, 123, 255, 0.10) 55%, transparent 82%);
  transform: skewX(-16deg);
  pointer-events: none;
}

.page-contact .co-hero__inner {
  position: relative;
}

.page-contact .breadcrumbs {
  color: var(--color-dust);
  font-size: 13px;
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-contact .breadcrumbs a {
  color: var(--color-mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(168, 243, 236, 0.35);
}

.page-contact .breadcrumbs a:hover {
  color: var(--color-neon);
  border-bottom-color: var(--color-neon);
}

.page-contact .co-hero__title {
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-size: clamp(30px, 7.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--color-paper);
  text-shadow: 4px 4px 0 rgba(37, 225, 208, 0.14);
}

.page-contact .co-hero__lead {
  max-width: 60ch;
  margin: 0 0 clamp(22px, 4vw, 34px);
  color: var(--color-mist);
  opacity: 0.9;
}

.page-contact .co-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .co-tag {
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--co-line-dark);
  color: var(--color-mist);
  text-decoration: none;
  transition: border-color 240ms var(--ease), color 240ms var(--ease), background-color 240ms var(--ease);
}

.page-contact .co-tag:hover,
.page-contact .co-tag:focus-visible {
  border-color: var(--color-neon);
  color: var(--color-midnight);
  background: var(--color-neon);
}

.page-contact .co-hero__figure {
  margin: clamp(30px, 5vw, 56px) 0 0;
}

.page-contact .co-hero__figure img {
  display: block;
  width: 100%;
  height: clamp(200px, 40vw, 430px);
  object-fit: cover;
  border-top: 1px solid var(--co-line-dark);
  border-bottom: 1px solid var(--co-line-dark);
  filter: saturate(0.92) contrast(1.05);
}

/* ---------- 01 合作方向 ---------- */

.page-contact .co-dir-grid {
  display: grid;
  gap: 22px;
}

.page-contact .co-dir {
  position: relative;
  padding: 26px 22px 22px;
  background: var(--co-paper-card);
  border: 1px solid var(--co-line-light);
  border-top: 3px solid var(--color-neon);
  box-shadow: 7px 7px 0 rgba(4, 16, 31, 0.06);
}

.page-contact .co-dir--rights {
  border-top-color: var(--color-grass);
}

.page-contact .co-dir--brand {
  border-top-color: var(--color-sunset);
}

.page-contact .co-dir__num {
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--color-dust);
}

.page-contact .co-dir .subhead {
  margin: 0 0 12px;
  color: var(--color-ink);
}

.page-contact .co-dir .body-text {
  margin: 0 0 14px;
}

.page-contact .co-dir__who {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--color-sunset);
}

.page-contact .co-dir__more {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--co-line-light);
}

.page-contact .co-dir__more summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-ink);
}

.page-contact .co-dir__more summary::-webkit-details-marker {
  display: none;
}

.page-contact .co-dir__more summary::after {
  content: "＋";
  font-size: 15px;
  color: var(--color-sunset);
}

.page-contact .co-dir__more[open] summary::after {
  content: "－";
}

.page-contact .co-dir__more summary:focus-visible {
  outline: 2px solid var(--color-neon);
  outline-offset: 3px;
}

.page-contact .co-dir__list {
  margin: 12px 0 0;
  padding: 0 0 0 16px;
  list-style: none;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(4, 16, 31, 0.72);
}

.page-contact .co-dir__list li {
  position: relative;
  margin-bottom: 5px;
}

.page-contact .co-dir__list li::before {
  content: "";
  position: absolute;
  left: -14px;
  top: 11px;
  width: 6px;
  height: 1px;
  background: var(--color-neon);
}

/* ---------- 02 接入流程 ---------- */

.page-contact .co-steps {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}

.page-contact .co-step {
  position: relative;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--co-line-dark);
}

.page-contact .co-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--color-neon);
  background: var(--color-midnight);
  color: var(--color-neon);
  font-size: 14px;
  transition: background-color 240ms var(--ease), color 240ms var(--ease);
}

.page-contact .co-step:hover .co-step__num,
.page-contact .co-step:focus-within .co-step__num {
  background: var(--color-neon);
  color: var(--color-midnight);
}

.page-contact .co-step__title {
  margin: 14px 0 6px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-paper);
}

.page-contact .co-step__time {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--color-sunset);
}

.page-contact .co-step__out {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-dust);
}

.page-contact .co-flow__figure {
  max-width: 760px;
  margin: clamp(34px, 5vw, 56px) auto 0;
}

.page-contact .co-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--co-line-dark);
  background: var(--color-midnight);
}

.page-contact .co-flow__figure .media-figure__cap {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-dust);
}

/* ---------- 03 区域与内容合作 ---------- */

.page-contact .co-region__inner {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
}

.page-contact .co-region__list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
}

.page-contact .co-region__list > li {
  padding-left: 18px;
  border-left: 2px solid var(--color-neon);
}

.page-contact .co-region__item-title {
  margin: 0 0 6px;
  color: var(--color-ink);
}

.page-contact .co-region__list .body-text {
  margin: 0;
}

.page-contact .co-map {
  position: relative;
  align-self: start;
  aspect-ratio: 5 / 4;
  width: 100%;
  max-width: 440px;
  border: 1px solid var(--co-line-light);
  background:
    radial-gradient(60% 50% at 30% 70%, rgba(37, 225, 208, 0.14), transparent 70%),
    linear-gradient(160deg, #04101F 0%, #0E1F3A 100%);
  overflow: hidden;
}

.page-contact .co-map__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(168, 243, 236, 0.3);
}

.page-contact .co-map__ring--outer {
  left: 8%;
  top: 18%;
  width: 62%;
  height: 78%;
}

.page-contact .co-map__ring--inner {
  left: 20%;
  top: 34%;
  width: 34%;
  height: 44%;
  border-color: rgba(37, 225, 208, 0.5);
}

.page-contact .co-map__line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, var(--color-neon), rgba(37, 225, 208, 0.1));
  transform-origin: left center;
}

.page-contact .co-map__line--bj {
  left: 37%;
  top: 55%;
  width: 42%;
  transform: rotate(-22deg);
}

.page-contact .co-map__line--cd {
  left: 37%;
  top: 55%;
  width: 36%;
  transform: rotate(24deg);
}

.page-contact .co-map__dot {
  position: absolute;
  padding: 4px 9px;
  font-size: clamp(10px, 2.6vw, 12px);
  letter-spacing: 0.04em;
  line-height: 1.4;
  color: var(--color-paper);
  background: rgba(7, 15, 30, 0.82);
  border: 1px solid var(--co-line-dark);
  white-space: nowrap;
}

.page-contact .co-map__dot--hohhot {
  left: 20%;
  top: 47%;
  border-color: var(--color-neon);
  color: var(--color-neon);
}

.page-contact .co-map__dot--bj {
  right: 5%;
  top: 26%;
}

.page-contact .co-map__dot--cd {
  right: 7%;
  bottom: 16%;
}

/* ---------- 04 用户服务通道 ---------- */

.page-contact .co-channel-grid {
  display: grid;
  gap: 18px;
}

.page-contact .co-channel {
  display: block;
  padding: 22px 20px;
  text-decoration: none;
  color: inherit;
  background: rgba(7, 15, 30, 0.42);
  border: 1px solid var(--co-line-dark);
  transition: border-color 240ms var(--ease), background-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-contact .co-channel:hover,
.page-contact .co-channel:focus-visible {
  border-color: var(--color-neon);
  background: rgba(37, 225, 208, 0.08);
  transform: translateY(-2px);
}

.page-contact .co-channel .label {
  color: var(--color-mist);
  display: block;
  margin-bottom: 10px;
}

.page-contact .co-channel__title {
  margin: 0 0 10px;
  color: var(--color-paper);
}

.page-contact .co-channel .body-text {
  margin: 0 0 14px;
  color: var(--color-dust);
  font-size: 15px;
}

.page-contact .co-channel__go {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--color-neon);
}

/* ---------- 05 联系信息 ---------- */

.page-contact .co-contact-grid {
  display: grid;
  gap: 18px;
  margin-bottom: clamp(30px, 5vw, 48px);
}

.page-contact .co-contact-card {
  padding: 22px 20px;
  background: rgba(7, 15, 30, 0.55);
  border: 1px solid var(--co-line-dark);
  border-left: 3px solid var(--color-neon);
}

.page-contact .co-contact-card .label {
  display: block;
  color: var(--color-mist);
  margin-bottom: 12px;
}

.page-contact .co-contact-value {
  margin: 0 0 12px;
  font-size: clamp(19px, 4.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--color-neon);
  word-break: break-word;
}

.page-contact .co-contact-card .small-note,
.page-contact .co-contact-card .body-text {
  margin: 0;
  color: var(--color-dust);
  font-size: 14px;
}

.page-contact .co-contact-addr {
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .co-hours {
  padding: 22px 20px;
  border: 1px solid var(--co-line-dark);
  background: rgba(4, 16, 31, 0.5);
}

.page-contact .co-hours__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: 18px;
}

.page-contact .co-hours__head .label {
  color: var(--color-grass);
}

.page-contact .co-hours__head .small-note {
  color: var(--color-dust);
}

.page-contact .co-hours__range {
  font-size: clamp(18px, 4vw, 24px);
  color: var(--color-paper);
}

.page-contact .co-hours__bar {
  position: relative;
  height: 14px;
  background: rgba(124, 140, 166, 0.22);
  border: 1px solid var(--co-line-dark);
}

.page-contact .co-hours__band {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8.33%;
  width: 75%;
  background: linear-gradient(90deg, var(--color-grass), var(--color-neon));
  box-shadow: 0 0 14px rgba(37, 225, 208, 0.45);
}

.page-contact .co-hours__axis {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 12px;
  color: var(--color-dust);
}

.page-contact .co-hours__note {
  margin: 16px 0 0;
  color: var(--color-dust);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .co-dir-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .co-channel-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .co-contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .co-contact-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 760px) {
  .page-contact .co-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 28px;
  }

  .page-contact .co-step {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-contact .co-region__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px 26px;
  }
}

@media (min-width: 980px) {
  .page-contact .co-dir-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
  }

  .page-contact .co-channel-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .co-contact-grid {
    grid-template-columns: 1.15fr 1fr 1.15fr;
  }

  .page-contact .co-contact-card:last-child {
    grid-column: auto;
  }

  .page-contact .co-region__inner {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .co-steps {
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
  }

  .page-contact .co-steps::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 19px;
    border-top: 1px dashed rgba(37, 225, 208, 0.42);
  }

  .page-contact .co-step {
    padding-right: 20px;
  }

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

  .page-contact .co-step:last-child {
    padding-right: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-tag,
  .page-contact .co-step__num,
  .page-contact .co-channel {
    transition: none;
  }

  .page-contact .co-channel:hover,
  .page-contact .co-channel:focus-visible {
    transform: none;
  }
}
</main>