.page-contact {
  --ct-soft: #cfd9e6;
  --ct-card: rgba(255, 255, 255, .05);
  --ct-card-2: rgba(255, 255, 255, .085);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 24px;
  padding-bottom: 18px;
  font-size: 13px;
  color: var(--mist);
}
.page-contact .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .breadcrumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-contact .breadcrumbs span[aria-current="page"] {
  color: var(--cream);
}

/* ---------- 首屏 ---------- */
.page-contact .coop-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background: var(--night);
  margin-bottom: clamp(48px, 7vw, 96px);
}
.page-contact .coop-hero__stage {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-contact .coop-hero__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .55;
}
.page-contact .coop-hero__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(6, 10, 24, .95) 0%, rgba(6, 10, 24, .74) 48%, rgba(6, 10, 24, .18) 100%),
    linear-gradient(180deg, rgba(6, 10, 24, .35) 0%, rgba(6, 10, 24, .9) 100%);
}
.page-contact .coop-hero__body {
  position: relative;
  z-index: 2;
  padding-top: clamp(40px, 6.5vw, 84px);
  padding-bottom: clamp(40px, 6.5vw, 84px);
}
.page-contact .coop-hero__copy {
  max-width: 700px;
}
.page-contact .coop-hero__kicker {
  color: var(--cyan);
  margin: 0 0 16px;
}
.page-contact .coop-hero__title {
  margin: 0 0 20px;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 5vw, 52px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--cream);
}
.page-contact .coop-hero__lead {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--ct-soft);
}
.page-contact .coop-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.page-contact .coop-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 38px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}
.page-contact .coop-hero__facts dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}
.page-contact .coop-hero__facts dd {
  margin: 6px 0 0;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  font-weight: 600;
  color: var(--gold);
}

/* ---------- 合作方向扇形卡 ---------- */
.page-contact .coop-tracks {
  margin-bottom: clamp(56px, 8vw, 104px);
}
.page-contact .coop-fan {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 34px;
}
.page-contact .coop-card {
  position: relative;
  padding: 26px 22px 22px;
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--gold);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, var(--ct-card-2), var(--ct-card));
  backdrop-filter: blur(6px);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
              border-color .35s var(--ease), background .35s var(--ease);
}
.page-contact .coop-card:nth-child(2) { border-top-color: var(--cyan); }
.page-contact .coop-card:nth-child(3) { border-top-color: var(--ember); }

.page-contact .coop-card__idx {
  margin: 0 0 12px;
  color: var(--mist);
}
.page-contact .coop-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.35;
  color: var(--cream);
}
.page-contact .coop-card__for {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}
.page-contact .coop-card__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-contact .coop-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ct-soft);
}
.page-contact .coop-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 7px;
  height: 1px;
  background: var(--cyan);
}
.page-contact .coop-card__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 14px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 178, 60, .35);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .coop-card__link:hover,
.page-contact .coop-card__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 四步流程 ---------- */
.page-contact .coop-process {
  margin-bottom: clamp(56px, 8vw, 104px);
}
.page-contact .flow {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-contact .flow__step {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--night);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  transition: border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}
.page-contact .flow__step:hover,
.page-contact .flow__step:focus-within {
  border-color: rgba(53, 223, 210, .45);
  background: #101b38;
  transform: translateY(-3px);
}
.page-contact .flow__num {
  display: inline-block;
  margin-bottom: 12px;
  padding-bottom: 4px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--gold);
  border-bottom: 2px solid var(--gold);
}
.page-contact .flow__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--cream);
}
.page-contact .flow__desc {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}
.page-contact .flow__meta {
  margin: 0 0 6px;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--cyan);
}
.page-contact .flow__out {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ember);
}

/* ---------- 联系信息（奶油实色层） ---------- */
.page-contact .coop-contact {
  margin-bottom: clamp(56px, 8vw, 104px);
}
.page-contact .coop-contact__panel {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 32px;
  padding: clamp(26px, 4vw, 52px);
  background: var(--cream);
  color: var(--brown);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
}
.page-contact .coop-contact__panel::after {
  content: "";
  position: absolute;
  right: -130px;
  bottom: -150px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: repeating-radial-gradient(circle at center,
    rgba(224, 82, 42, .12) 0 1px, transparent 1px 22px);
  pointer-events: none;
}
.page-contact .coop-contact__main {
  position: relative;
  z-index: 1;
  min-width: 0;
}
.page-contact .coop-contact__kicker {
  margin: 0 0 14px;
  color: var(--ember);
}
.page-contact .coop-contact__panel h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 34px);
  line-height: 1.28;
  letter-spacing: -.005em;
  color: var(--brown);
}
.page-contact .coop-contact__note {
  margin: 0;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(34, 22, 9, .78);
}
.page-contact .coop-contact__list {
  margin: 26px 0 0;
  border-top: 1px solid rgba(34, 22, 9, .2);
}
.page-contact .coop-contact__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(34, 22, 9, .14);
}
.page-contact .coop-contact__row dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: rgba(34, 22, 9, .58);
}
.page-contact .coop-contact__row dd {
  margin: 0;
  min-width: 0;
}
.page-contact .coop-contact__row dd a {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 22px);
  line-height: 1.4;
  color: var(--brown);
  text-decoration: none;
  word-break: break-all;
  user-select: all;
  border-bottom: 2px solid var(--ember);
  padding-bottom: 3px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-contact .coop-contact__row dd a:hover,
.page-contact .coop-contact__row dd a:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--brown);
}
.page-contact .coop-contact__hint {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(34, 22, 9, .7);
}
.page-contact .coop-contact__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  min-width: 0;
}
.page-contact .coop-contact__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  border: 1px solid rgba(34, 22, 9, .18);
}
.page-contact .coop-contact__figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.65;
  color: rgba(34, 22, 9, .62);
}

/* ---------- 通信地址 ---------- */
.page-contact .coop-address {
  margin-bottom: clamp(56px, 8vw, 104px);
}
.page-contact .coop-address__box {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 28px;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background:
    linear-gradient(140deg, rgba(53, 223, 210, .07), transparent 55%),
    var(--night);
}
.page-contact .coop-address__text {
  position: relative;
  z-index: 1;
  min-width: 0;
}
.page-contact .coop-address__box .label {
  margin: 0 0 14px;
  color: var(--cyan);
}
.page-contact .coop-address__box h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 2.8vw, 30px);
  line-height: 1.34;
  color: var(--cream);
}
.page-contact .coop-address__line {
  margin: 0 0 16px;
  padding: 14px 16px;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.7;
  font-weight: 600;
  color: var(--gold);
  border-left: 3px solid var(--ember);
  background: rgba(255, 255, 255, .04);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  user-select: all;
}
.page-contact .coop-address__desc {
  margin: 0 0 18px;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}
.page-contact .coop-address__icp {
  margin: 0;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .06em;
  color: rgba(159, 179, 200, .8);
}
.page-contact .coop-address__coords {
  position: relative;
  display: none;
  place-items: center;
  min-height: 180px;
}
.page-contact .coop-address__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(53, 223, 210, .16);
}
.page-contact .coop-address__ring {
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 1px solid rgba(42, 53, 80, .9);
}
.page-contact .coop-address__ring--2 {
  width: 190px;
  height: 190px;
  border-color: rgba(232, 178, 60, .28);
}

/* ---------- 材料清单 ---------- */
.page-contact .coop-kit {
  margin-bottom: clamp(56px, 8vw, 104px);
}
.page-contact .kit-list {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}
.page-contact .kit-item {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .kit-item__label {
  color: var(--ember);
}
.page-contact .kit-item__value {
  margin: 0;
  padding: 13px 15px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ct-soft);
  background: var(--glass);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
}
.page-contact .coop-kit__foot {
  margin: 22px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}
.page-contact .coop-kit__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 223, 210, .4);
}
.page-contact .coop-kit__foot a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 常见合作问题 ---------- */
.page-contact .coop-faq {
  margin-bottom: clamp(56px, 8vw, 104px);
}
.page-contact .coop-faq__list {
  display: grid;
  gap: 10px;
  margin-top: 30px;
}
.page-contact .qa {
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .03);
  overflow: hidden;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.page-contact .qa[open] {
  border-color: rgba(232, 178, 60, .4);
  background: rgba(255, 255, 255, .055);
}
.page-contact .qa summary {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 17px 54px 17px 20px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--cream);
}
.page-contact .qa summary::-webkit-details-marker { display: none; }
.page-contact .qa summary::marker { content: ""; }
.page-contact .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}
.page-contact .qa__ic {
  position: absolute;
  right: 20px;
  top: 50%;
  width: 14px;
  height: 14px;
  margin-top: -7px;
}
.page-contact .qa__ic::before,
.page-contact .qa__ic::after {
  content: "";
  position: absolute;
  background: var(--cyan);
}
.page-contact .qa__ic::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}
.page-contact .qa__ic::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform .25s var(--ease);
}
.page-contact .qa[open] .qa__ic::after {
  transform: scaleY(0);
}
.page-contact .qa__body {
  padding: 0 20px 18px;
}
.page-contact .qa__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 收尾入口 ---------- */
.page-contact .coop-next {
  margin-bottom: clamp(48px, 7vw, 88px);
}
.page-contact .coop-next__box {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 3.6vw, 40px);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  background:
    linear-gradient(100deg, rgba(232, 178, 60, .09), rgba(53, 223, 210, .07) 70%, transparent),
    rgba(255, 255, 255, .03);
}
.page-contact .coop-next__text h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.34;
  color: var(--cream);
}
.page-contact .coop-next__text p {
  margin: 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}
.page-contact .coop-next__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-content: start;
}

/* ---------- 窄屏保护 ---------- */
.page-contact {
  overflow-x: clip;
}
.page-contact .coop-card,
.page-contact .flow__step,
.page-contact .kit-item__value,
.page-contact .qa__body p {
  overflow-wrap: break-word;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-contact .coop-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
  .page-contact .kit-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
  .page-contact .coop-next__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-contact .coop-fan {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
    padding: 26px 0 52px;
  }
  .page-contact .coop-fan > .coop-card {
    flex: 1 1 0;
    min-width: 0;
  }
  .page-contact .coop-fan > .coop-card + .coop-card {
    margin-left: -38px;
  }
  .page-contact .coop-fan > .coop-card:nth-child(1) {
    transform: translateY(36px) rotate(-1.4deg);
    z-index: 1;
  }
  .page-contact .coop-fan > .coop-card:nth-child(2) {
    transform: translateY(0) rotate(.3deg);
    z-index: 2;
  }
  .page-contact .coop-fan > .coop-card:nth-child(3) {
    transform: translateY(-34px) rotate(1.6deg);
    z-index: 3;
  }
  .page-contact .coop-fan > .coop-card:hover,
  .page-contact .coop-fan > .coop-card:focus-within {
    transform: translateY(-12px) rotate(0deg);
    z-index: 9;
    border-color: rgba(232, 178, 60, .5);
    box-shadow: 0 28px 62px rgba(0, 0, 0, .52);
  }

  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 24px;
  }
  .page-contact .flow__step {
    padding: 42px 20px 24px;
    border-radius: 0;
    border-left: 0;
  }
  .page-contact .flow__step:first-child {
    border-left: 1px solid var(--line-soft);
    border-radius: var(--r-md) 0 0 var(--r-md);
  }
  .page-contact .flow__step:last-child {
    border-radius: 0 var(--r-md) var(--r-md) 0;
  }
  .page-contact .flow__step::before {
    content: "";
    position: absolute;
    left: 20px;
    top: 5px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 0 3px rgba(53, 223, 210, .16);
  }
  .page-contact .flow__step::after {
    content: "";
    position: absolute;
    left: 33px;
    right: -20px;
    top: 8px;
    height: 1px;
    background: linear-gradient(90deg, rgba(53, 223, 210, .55), rgba(232, 178, 60, .45));
  }
  .page-contact .flow__step:last-child::after {
    display: none;
  }

  .page-contact .coop-contact__panel {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
    gap: 48px;
  }
  .page-contact .coop-contact__row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }

  .page-contact .coop-address__box {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: center;
    gap: 40px;
  }
  .page-contact .coop-address__coords {
    display: grid;
  }
}

@media (min-width: 1200px) {
  .page-contact .coop-hero__copy {
    max-width: 760px;
  }
  .page-contact .coop-fan > .coop-card {
    padding: 30px 28px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-card,
  .page-contact .flow__step,
  .page-contact .qa,
  .page-contact .qa__ic::after {
    transition: none;
  }
  .page-contact .coop-fan > .coop-card:hover,
  .page-contact .coop-fan > .coop-card:focus-within,
  .page-contact .flow__step:hover,
  .page-contact .flow__step:focus-within {
    transform: none;
  }
}