.page-contact {
  --cc-gap: clamp(16px, 3vw, 28px);
  --cc-pad: clamp(20px, 3.4vw, 34px);
}

.page-contact .crumbs {
  padding-top: clamp(18px, 3vw, 32px);
}

.page-contact .crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-contact .crumbs-list a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

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

/* ---------- 首屏引言 ---------- */

.page-contact .contact-lead {
  padding-top: clamp(30px, 5vw, 60px);
}

.page-contact .contact-h1 {
  margin: 14px 0 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(32px, 5.8vw, 62px);
  line-height: 1.08;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .contact-lead .lede {
  margin-top: clamp(18px, 2.6vw, 28px);
  max-width: 40em;
}

.page-contact .lead-points {
  display: grid;
  gap: 0;
  margin: clamp(24px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .lead-points li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

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

.page-contact .lp-k {
  flex: 0 0 auto;
  min-width: 6em;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .lp-v {
  flex: 1 1 16em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}

/* ---------- 合作方向 ---------- */

.page-contact .deal-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .deal-card {
  padding: var(--cc-pad);
  transition: transform .34s var(--ease), box-shadow .34s var(--ease);
}

.page-contact .deal-card:hover,
.page-contact .deal-card:focus-within {
  transform: rotate(-.7deg) translateY(-4px);
}

.page-contact .deal-card .card-title {
  margin-top: 12px;
  font-size: clamp(20px, 2.3vw, 25px);
  line-height: 1.28;
}

.page-contact .deal-card .card-body {
  margin-top: 12px;
}

.page-contact .deal-for {
  margin: 18px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--amber);
}

.page-contact .deal-figure {
  margin: clamp(28px, 4vw, 50px) 0 0;
}

.page-contact .deal-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  filter: saturate(.92) contrast(1.06);
}

.page-contact .deal-figure .media-caption {
  margin-top: 12px;
  max-width: 46em;
}

/* ---------- 适合的伙伴 ---------- */

.page-contact .partner-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .partner-item {
  padding: 22px 0;
  border-top: 1px solid var(--line);
}

.page-contact .partner-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .partner-role {
  margin: 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .partner-gain {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--paper);
}

/* ---------- 接洽流程 ---------- */

.page-contact .flow-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: clamp(26px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow-step {
  position: relative;
  border-left: 2px solid var(--line);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(180deg, rgba(10, 35, 27, .9), rgba(6, 26, 20, .9));
  transition: border-color .28s var(--ease), background .28s var(--ease);
}

.page-contact .flow-step[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(180deg, rgba(20, 224, 176, .1), rgba(6, 26, 20, .92));
}

.page-contact .flow-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-contact .flow-head::-webkit-details-marker {
  display: none;
}

.page-contact .flow-head::marker {
  content: "";
}

.page-contact .flow-index {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .flow-step[open] .flow-index {
  color: var(--flare);
}

.page-contact .flow-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .flow-body {
  padding: 0 20px 20px;
}

.page-contact .flow-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 联系前准备 ---------- */

.page-contact .prep-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-contact .prep-item {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink);
}

.page-contact .prep-key {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-contact .prep-val {
  margin: 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
}

/* ---------- 联系方式 ---------- */

.page-contact .contact-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: clamp(26px, 4vw, 46px);
  border: 1px solid var(--amber);
  border-radius: var(--radius);
  background:
    linear-gradient(155deg, rgba(255, 194, 74, .12), rgba(4, 18, 14, 0) 58%),
    var(--panel);
  overflow: hidden;
}

.page-contact .cc-body {
  padding: var(--cc-pad);
}

.page-contact .cc-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
}

.page-contact .cc-item {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .cc-item:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .cc-key {
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .cc-val {
  margin: 8px 0 0;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .cc-val.u-mono {
  font-family: var(--font-mono);
  letter-spacing: .01em;
  color: var(--cyan-soft);
  word-break: break-all;
}

.page-contact .cc-note {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .cc-art {
  margin: 0;
  line-height: 0;
}

.page-contact .cc-art img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
  opacity: .9;
  filter: saturate(.95) contrast(1.05);
}

/* ---------- 延伸入口 ---------- */

.page-contact .contact-next {
  border-top: 1px solid var(--line);
}

.page-contact .next-title {
  margin: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(21px, 2.7vw, 30px);
  line-height: 1.2;
  color: var(--paper);
}

.page-contact .next-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--line);
}

.page-contact .next-link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  font-size: 16px;
  color: var(--paper);
  text-decoration: none;
  transition: color .24s var(--ease), padding-left .24s var(--ease);
}

.page-contact .next-link::before {
  content: "→";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
}

.page-contact .next-link:hover,
.page-contact .next-link:focus-visible {
  color: var(--cyan-soft);
  padding-left: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .deal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .deal-card:nth-child(1),
  .page-contact .deal-card:nth-child(4) {
    min-height: 288px;
  }

  .page-contact .deal-card:nth-child(2),
  .page-contact .deal-card:nth-child(3) {
    min-height: 224px;
  }

  .page-contact .deal-card:nth-child(2) {
    margin-top: 44px;
  }

  .page-contact .deal-card:nth-child(4) {
    margin-top: 44px;
  }

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

  .page-contact .prep-item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px) {
  .page-contact .partner-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(32px, 5vw, 78px);
    padding-bottom: 44px;
  }

  .page-contact .partner-item {
    padding: 26px 0;
  }

  .page-contact .partner-item:nth-child(2),
  .page-contact .partner-item:nth-child(4) {
    transform: translateY(44px);
  }

  .page-contact .contact-card {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  }

  .page-contact .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 4vw, 56px);
  }
}

@media (min-width: 940px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
    align-items: start;
  }

  .page-contact .flow-step {
    border-left: 0;
    border-radius: var(--radius);
    background: transparent;
    padding: 18px 16px 4px;
    border-top: 2px solid var(--line);
  }

  .page-contact .flow-step[open] {
    border-top-color: var(--cyan);
    background: linear-gradient(180deg, rgba(20, 224, 176, .1), rgba(6, 26, 20, .5));
  }

  .page-contact .flow-step::after {
    content: "";
    position: absolute;
    top: 34px;
    right: -18px;
    width: 10px;
    height: 10px;
    border-top: 1px solid var(--cyan);
    border-right: 1px solid var(--cyan);
    transform: rotate(45deg);
    opacity: .8;
  }

  .page-contact .flow-step:last-child::after {
    display: none;
  }

  .page-contact .flow-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 0 0 14px;
  }

  .page-contact .flow-body {
    padding: 0 0 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .deal-card,
  .page-contact .flow-step,
  .page-contact .next-link {
    transition: none;
  }

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

  .page-contact .partner-item:nth-child(2),
  .page-contact .partner-item:nth-child(4) {
    transform: none;
  }
}