.page-contact {
  --pc-line: rgba(42, 57, 71, .9);
  --pc-glow: rgba(59, 130, 246, .38);
}

/* ---------- 首屏 ---------- */

.page-contact .coop-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-900);
  padding-block: clamp(76px, 11vw, 132px) clamp(48px, 7vw, 90px);
}

.page-contact .coop-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 42%;
  opacity: .38;
}

.page-contact .coop-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(10, 15, 20, .52) 0%, rgba(10, 15, 20, .82) 58%, var(--ink-900) 100%),
    linear-gradient(104deg, rgba(10, 15, 20, .92) 0%, rgba(10, 15, 20, .28) 72%);
}

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

.page-contact .coop-hero__kicker {
  margin: 26px 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-contact .coop-hero__title {
  max-width: 15em;
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.6vw, 62px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .coop-hero__lead {
  max-width: 640px;
  margin: 0 0 32px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-contact .coop-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 主布局 ---------- */

.page-contact .coop-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-block: clamp(44px, 6vw, 78px) clamp(56px, 8vw, 96px);
}

/* ---------- 左侧联系卡 ---------- */

.page-contact .contact-card {
  position: relative;
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--ink-850) 100%);
  border: 1px solid var(--pc-glow);
  border-radius: var(--r-md);
  padding: 26px 24px 24px;
  box-shadow: 0 22px 54px rgba(0, 0, 0, .42);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 3px;
  height: 62px;
  background: var(--blue);
  border-radius: var(--r-md) 0 0 0;
}

.page-contact .contact-card__kicker {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--blue);
}

.page-contact .contact-card__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .contact-card__row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 13px 0;
  border-top: 1px solid var(--ink-700);
}

.page-contact .contact-card__label {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--dim-2);
}

.page-contact .contact-card__value {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.4;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .contact-card__link {
  display: inline-block;
  margin-top: 16px;
  font-size: 13px;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 44, .35);
  padding-bottom: 2px;
}

.page-contact .contact-card__link:hover,
.page-contact .contact-card__link:focus-visible {
  color: var(--orange-soft);
  border-bottom-color: var(--orange-soft);
}

.page-contact .contact-card__foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--ink-700);
  font-size: 12px;
  line-height: 1.7;
  color: var(--paper-dim);
}

/* ---------- 正文区 ---------- */

.page-contact .coop-body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(52px, 7vw, 88px);
}

.page-contact .coop-section {
  scroll-margin-top: 96px;
}

.page-contact .coop-section--final {
  padding-bottom: 8px;
}

.page-contact .coop-note {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper-dim);
  max-width: 62ch;
}

.page-contact .coop-note a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 130, 246, .4);
}

/* ---------- 合作方式卡片 ---------- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .coop-card {
  position: relative;
  padding: 26px 24px 28px;
  background: linear-gradient(170deg, var(--ink-800) 0%, rgba(10, 15, 20, .78) 100%);
  border-radius: var(--r-md);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  overflow: hidden;
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--pc-accent, var(--blue));
}

.page-contact .coop-card--api { --pc-accent: var(--blue); }
.page-contact .coop-card--city { --pc-accent: var(--orange); }
.page-contact .coop-card--license { --pc-accent: var(--cyan); }

.page-contact .coop-card__tag {
  display: inline-block;
  margin: 0 0 14px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--pc-accent, var(--blue));
  border: 1px solid currentColor;
  border-radius: 999px;
}

.page-contact .coop-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .coop-card__who {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--signal);
}

.page-contact .coop-card__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-dim);
}

.page-contact .coop-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-contact .coop-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-dim);
}

.page-contact .coop-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 1px;
  background: var(--pc-accent, var(--blue));
}

.page-contact .coop-card__list a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 130, 246, .4);
}

/* ---------- 数据清单 ---------- */

.page-contact .datalist {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--pc-line);
}

.page-contact .datalist__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 17px 0;
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .datalist__name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .datalist__val {
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

/* ---------- 四步流程 ---------- */

.page-contact .flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  background: var(--ink-700);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-contact .flow__step {
  position: relative;
  background: var(--ink-850);
  padding: 26px 22px 28px;
  transition: background .25s var(--ease);
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: transparent;
  transition: background .25s var(--ease);
}

.page-contact .flow__step:hover,
.page-contact .flow__step:focus-within {
  background: var(--ink-800);
}

.page-contact .flow__step:hover::before,
.page-contact .flow__step:focus-within::before {
  background: var(--cyan);
}

.page-contact .flow__dot {
  display: block;
  width: 9px;
  height: 9px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(37, 224, 208, .15);
}

.page-contact .flow__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
}

.page-contact .flow__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.005em;
  color: var(--paper);
}

.page-contact .flow__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-contact .flow__prep {
  display: block;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--signal);
  transition: max-height .32s var(--ease), opacity .28s var(--ease), margin-top .32s var(--ease);
}

.page-contact .flow__step:hover .flow__prep,
.page-contact .flow__step:focus-within .flow__prep {
  max-height: 140px;
  opacity: 1;
  margin-top: 12px;
}

/* ---------- 流程配图 ---------- */

.page-contact .coop-media {
  margin: 26px 0 0;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--ink-800);
}

.page-contact .coop-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(.86) brightness(.9);
}

.page-contact .coop-media .media__caption {
  display: block;
  padding: 12px 16px 14px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--dim-2);
  border-top: 1px solid var(--ink-700);
}

/* ---------- 支持 ---------- */

.page-contact .support-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .support-card {
  padding: 22px 22px 24px;
  background: var(--ink-850);
  border-left: 3px solid var(--blue);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.page-contact .support-card:nth-child(2) {
  border-left-color: var(--orange);
}

.page-contact .support-card:nth-child(3) {
  border-left-color: var(--signal);
}

.page-contact .support-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--dim-2);
  text-transform: uppercase;
}

.page-contact .support-card__big {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--paper);
}

.page-contact .support-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--paper-dim);
}

.page-contact .support-card__text a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 130, 246, .4);
}

/* ---------- 收尾 ---------- */

.page-contact .start-panel {
  padding: 28px 24px 30px;
  border-radius: var(--r-md);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(59, 130, 246, .16) 0%, rgba(10, 15, 20, 0) 62%),
    var(--ink-850);
  border: 1px solid var(--ink-700);
}

.page-contact .start-panel__lead {
  max-width: 58ch;
  margin: 0 0 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}

.page-contact .start-rows {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--ink-700);
}

.page-contact .start-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ink-700);
}

.page-contact .start-row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--dim-2);
}

.page-contact .start-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-dim);
  overflow-wrap: anywhere;
}

.page-contact .start-row__mono {
  font-family: var(--font-mono);
  color: var(--paper);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .coop-grid {
    gap: 20px;
  }

  .page-contact .datalist__row {
    grid-template-columns: 168px minmax(0, 1fr);
    gap: 4px 20px;
    align-items: baseline;
  }

  .page-contact .start-row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 4px 20px;
    align-items: baseline;
  }

  .page-contact .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-contact .support-card--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 780px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .coop-media {
    margin-top: 30px;
  }
}

@media (min-width: 1020px) {
  .page-contact .coop-layout {
    grid-template-columns: 324px minmax(0, 1fr);
    gap: clamp(40px, 4.4vw, 64px);
    align-items: start;
  }

  .page-contact .coop-aside {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
  }

  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    align-items: start;
  }

  .page-contact .coop-card--api {
    padding-bottom: 44px;
  }

  .page-contact .coop-card--city {
    margin-top: 20px;
    padding-bottom: 34px;
  }

  .page-contact .coop-card--license {
    margin-top: 40px;
    padding-bottom: 28px;
  }

  .page-contact .coop-section {
    scroll-margin-top: 110px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-card {
    padding: 30px 26px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .flow__step,
  .page-contact .flow__step::before,
  .page-contact .flow__prep {
    transition: none;
  }
}