.page-contact {
  --contact-desk-w: 344px;
  --contact-gap: clamp(1.6rem, 3.5vw, 3rem);
  background: var(--ink);
  color: var(--white);
}

.page-contact .contact-crumb {
  padding-top: 1.25rem;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--hair);
}

.page-contact .contact-hero__wash {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 86% 6%, rgba(25, 227, 194, 0.16), transparent 58%),
    radial-gradient(90% 75% at 4% 92%, rgba(255, 122, 26, 0.11), transparent 62%),
    linear-gradient(158deg, var(--pitch) 0%, var(--ink) 64%);
}

.page-contact .contact-hero__wash::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(114deg, rgba(30, 92, 74, 0.34) 0 1px, transparent 1px 72px);
  opacity: 0.7;
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(1.8rem, 4vw, 3.2rem);
  padding: clamp(2rem, 5vw, 3.4rem) 0 clamp(2.2rem, 5vw, 3.8rem);
}

.page-contact .contact-hero h1 {
  margin: 0.7rem 0 0;
  max-width: 17ch;
  font-family: var(--font-cond);
  font-size: clamp(2rem, 6.6vw, 3.85rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-hero .lede {
  margin: 1.15rem 0 0;
  max-width: 48ch;
  color: var(--muted);
  font-size: clamp(0.94rem, 2.4vw, 1.02rem);
  line-height: 1.85;
}

.page-contact .contact-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.55rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__facts li {
  padding: 0.42rem 0.72rem;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--glass-fill);
  color: var(--white);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  backdrop-filter: blur(6px);
}

.page-contact .contact-hero__facts li:nth-child(2) {
  border-color: rgba(25, 227, 194, 0.5);
  color: var(--cyan);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.8rem;
}

.page-contact .contact-hero__plate {
  margin: 0;
  align-self: stretch;
}

.page-contact .contact-hero__plate img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 190px;
  object-fit: cover;
}

/* ---------- 主区域布局 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: var(--contact-gap);
  padding: clamp(2.2rem, 5vw, 3.8rem) 0 clamp(3rem, 6vw, 5rem);
}

/* ---------- 左侧联系卡 ---------- */
.page-contact .contact-desk {
  position: relative;
  overflow: hidden;
  padding: 1.35rem 1.25rem 1.45rem;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: var(--glass-fill);
  backdrop-filter: blur(8px);
}

.page-contact .contact-desk::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--signal), var(--cyan) 68%, transparent);
}

.page-contact .contact-desk__head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-contact .contact-desk__pulse {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(25, 227, 194, 0.16);
}

.page-contact .contact-desk__state {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .contact-desk__title {
  margin: 0.85rem 0 0;
  font-family: var(--font-cond);
  font-size: 1.32rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .contact-desk__list {
  margin: 1.05rem 0 0;
  padding: 0;
}

.page-contact .contact-desk__row {
  padding: 0.72rem 0;
  border-top: 1px solid var(--hair);
}

.page-contact .contact-desk__row:first-child {
  border-top: 0;
  padding-top: 0.35rem;
}

.page-contact .contact-desk__row dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .contact-desk__row dd {
  margin: 0.32rem 0 0;
  color: var(--white);
  font-size: 0.97rem;
  line-height: 1.55;
}

.page-contact .contact-desk__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-contact .contact-desk__row:first-child .contact-desk__value {
  color: var(--amber);
}

.page-contact .contact-desk__note {
  margin: 1rem 0 0;
  padding-top: 0.95rem;
  border-top: 1px dashed var(--hair);
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.75;
}

/* ---------- 右侧内容流 ---------- */
.page-contact .contact-stream {
  display: grid;
  gap: clamp(2.4rem, 5vw, 3.6rem);
  min-width: 0;
}

.page-contact .contact-block__head h2 {
  margin: 0.45rem 0 0;
  font-family: var(--font-cond);
  font-size: clamp(1.55rem, 4.4vw, 2.3rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .contact-block__intro {
  margin: 0.85rem 0 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.8;
}

/* 合作方向 */
.page-contact .deal-list {
  display: grid;
  gap: 1px;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--hair);
}

.page-contact .deal {
  display: flex;
  gap: 1rem;
  padding: 1.1rem 1.15rem 1.2rem;
  background: linear-gradient(118deg, rgba(14, 36, 30, 0.92) 0%, rgba(6, 17, 14, 0.96) 100%);
  transition: background 0.3s var(--ease);
}

.page-contact .deal:hover {
  background: linear-gradient(118deg, rgba(18, 51, 43, 0.96) 0%, rgba(11, 15, 18, 0.98) 100%);
}

.page-contact .deal__index {
  flex: none;
  width: 2.3rem;
  padding-top: 0.22rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--line);
  transition: color 0.3s var(--ease);
}

.page-contact .deal:hover .deal__index {
  color: var(--cyan);
}

.page-contact .deal__main {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .deal__title {
  margin: 0;
  font-size: 1.04rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .deal__text {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.89rem;
  line-height: 1.78;
}

.page-contact .deal__fit {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  color: var(--white);
  font-size: 0.79rem;
  line-height: 1.6;
  opacity: 0.86;
}

/* 合作流程 */
.page-contact .flow {
  display: grid;
  gap: 0.85rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-contact .flow__step {
  position: relative;
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1.05rem 1.15rem 1.1rem 1.35rem;
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(18, 51, 43, 0.5) 0%, rgba(9, 15, 19, 0.82) 100%);
  overflow: hidden;
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 0 100%);
}

.page-contact .flow__step:nth-child(4)::before {
  background: var(--signal);
}

.page-contact .flow__node {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  font-size: 0.79rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 26%, 100% 74%, 50% 100%, 0 74%, 0 26%);
}

.page-contact .flow__step:nth-child(4) .flow__node {
  background: var(--signal);
}

.page-contact .flow__body {
  min-width: 0;
}

.page-contact .flow__body h3 {
  margin: 0;
  font-family: var(--font-cond);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .flow__body p {
  margin: 0.42rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.78;
}

.page-contact .flow__plate {
  margin: 1.5rem 0 0;
}

.page-contact .flow__plate img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 常见问答 */
.page-contact .qa-list {
  display: grid;
  gap: 0.6rem;
  margin: 1.6rem 0 0;
}

.page-contact .qa {
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  background: rgba(11, 15, 18, 0.62);
  overflow: hidden;
}

.page-contact .qa summary {
  position: relative;
  padding: 0.98rem 2.9rem 0.98rem 1.1rem;
  cursor: pointer;
  list-style: none;
  color: var(--white);
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.55;
  transition: background 0.25s var(--ease);
}

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

.page-contact .qa summary::after {
  content: "+";
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--cyan);
}

.page-contact .qa[open] summary {
  background: rgba(18, 51, 43, 0.55);
}

.page-contact .qa[open] summary::after {
  content: "–";
  color: var(--signal);
}

.page-contact .qa__a {
  padding: 0.2rem 1.1rem 1.05rem;
  border-top: 1px solid var(--hair);
}

.page-contact .qa__a p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 0.89rem;
  line-height: 1.82;
}

/* 收尾 */
.page-contact .contact-next {
  display: grid;
  gap: 1.4rem;
  padding: clamp(1.5rem, 4vw, 2.2rem);
  border: 1px solid var(--hair);
  border-left: 4px solid var(--signal);
  border-radius: var(--radius);
  background:
    radial-gradient(90% 130% at 100% 0%, rgba(25, 227, 194, 0.12), transparent 60%),
    linear-gradient(140deg, rgba(18, 51, 43, 0.7) 0%, rgba(9, 15, 19, 0.92) 100%);
}

.page-contact .contact-next h2 {
  margin: 0.45rem 0 0;
  font-family: var(--font-cond);
  font-size: clamp(1.35rem, 3.8vw, 1.9rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--white);
}

.page-contact .contact-next__copy p:last-child {
  margin: 0.8rem 0 0;
  max-width: 56ch;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.8;
}

.page-contact .contact-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .flow {
    gap: 1rem;
  }

  .page-contact .flow__step {
    padding: 1.2rem 1.4rem 1.25rem 1.6rem;
  }

  .page-contact .contact-next {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-body {
    grid-template-columns: var(--contact-desk-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-desk {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-contact .deal {
    padding: 1.2rem 1.5rem 1.3rem;
  }
}