.page-contact {
  --pc-line: rgba(200, 255, 77, 0.24);
  --pc-line-soft: rgba(244, 246, 241, 0.12);
  --pc-amber-line: rgba(255, 138, 71, 0.42);
  --pc-soft-text: rgba(244, 246, 241, 0.8);
  background: var(--ink);
  color: var(--chalk);
  overflow-x: hidden;
}

.page-contact .pc-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.15rem var(--pad) 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fog);
}

.page-contact .pc-crumb a {
  color: var(--lime-soft);
  text-decoration: none;
}

.page-contact .pc-crumb a:hover,
.page-contact .pc-crumb a:focus-visible {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  padding: clamp(1.4rem, 4vw, 2.8rem) 0 clamp(2.4rem, 6vw, 4.5rem);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(200, 255, 77, 0.11), transparent 58%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 138, 71, 0.08), transparent 62%),
    var(--ink);
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .pc-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: end;
}

.page-contact .pc-hero__title {
  margin: 0.7rem 0 1rem;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.8rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

.page-contact .pc-hero__title::after {
  content: "";
  display: block;
  width: 4.4rem;
  height: 4px;
  margin-top: 1.1rem;
  background: var(--lime);
}

.page-contact .pc-hero__lede {
  max-width: 35rem;
  color: var(--pc-soft-text);
}

.page-contact .pc-hero__note {
  margin: 1.1rem 0 0;
  color: var(--fog);
}

.page-contact .pc-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.7rem;
}

.page-contact .pc-hero__media {
  position: relative;
  margin: 0;
  padding: 0.5rem 0.5rem 0;
  background: var(--ink-2);
  border: 1px solid var(--pc-line);
  box-shadow: 6px 6px 0 rgba(5, 19, 15, 0.6);
}

.page-contact .pc-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}

.page-contact .pc-hero__media figcaption {
  display: block;
  padding: 0.6rem 0.25rem 0.5rem;
  color: var(--fog);
}

/* ---------- 通用章节 ---------- */
.page-contact .pc-section {
  position: relative;
  padding: clamp(2.6rem, 7vw, 5rem) 0;
}

.page-contact .pc-section h2 {
  margin: 0.6rem 0 0.8rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-contact .pc-sec-head {
  max-width: 46rem;
  margin-bottom: clamp(1.6rem, 4vw, 2.8rem);
}

.page-contact .pc-sec-lead {
  margin: 0;
  max-width: 41rem;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--pc-soft-text);
}

/* ---------- 合作方向 ---------- */
.page-contact .pc-routes {
  background: var(--ink-2);
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .pc-routes__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.2rem;
}

.page-contact .pc-route {
  position: relative;
  padding: 1.4rem 1.2rem 1.5rem 1.35rem;
  background: rgba(10, 36, 32, 0.72);
  border: 1px solid var(--pc-line-soft);
  border-left: 3px solid var(--lime);
  transition: background 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .pc-route--ops {
  border-left-color: var(--amber);
}

.page-contact .pc-route--lic {
  border-left-color: var(--lime-soft);
}

.page-contact .pc-route:hover,
.page-contact .pc-route:focus,
.page-contact .pc-route:focus-within {
  background: rgba(10, 36, 32, 0.95);
  box-shadow: inset 0 0 0 1px var(--pc-line);
  outline: none;
}

.page-contact .pc-route__title {
  margin: 0.5rem 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-contact .pc-route__fit {
  margin: 0 0 0.95rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--lime-soft);
}

.page-contact .pc-route__list {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-route__list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--pc-soft-text);
}

.page-contact .pc-route__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 0.42rem;
  height: 1px;
  background: var(--fog);
}

.page-contact .pc-route__extra {
  max-height: 0;
  margin: 0;
  padding-top: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 0.88rem;
  line-height: 1.74;
  color: var(--fog);
  border-top: 1px dashed var(--pc-line-soft);
  transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease, padding 0.3s ease;
}

.page-contact .pc-route:hover .pc-route__extra,
.page-contact .pc-route:focus .pc-route__extra,
.page-contact .pc-route:focus-within .pc-route__extra {
  max-height: 24rem;
  margin-top: 0.95rem;
  padding-top: 0.85rem;
  opacity: 1;
}

/* ---------- 合作流程 ---------- */
.page-contact .pc-process {
  background: var(--ink);
}

.page-contact .pc-steps {
  position: relative;
  display: grid;
  gap: 1rem;
  margin: clamp(1.6rem, 4vw, 2.4rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-step details {
  height: 100%;
  padding: 0.85rem 0.9rem;
  background: rgba(20, 52, 44, 0.5);
  border: 1px solid var(--pc-line-soft);
  transition: background 0.22s ease, border-color 0.22s ease;
}

.page-contact .pc-step details[open],
.page-contact .pc-step details:hover {
  background: rgba(20, 52, 44, 0.92);
  border-color: var(--pc-line);
}

.page-contact .pc-step summary {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--chalk);
}

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

.page-contact .pc-step__num {
  flex: none;
  padding: 0.16rem 0.4rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--lime);
  border-radius: var(--r-sm);
}

.page-contact .pc-step:nth-child(4) .pc-step__num {
  background: var(--amber);
}

.page-contact .pc-step:nth-child(5) .pc-step__num {
  background: var(--lime-soft);
}

.page-contact .pc-step__body {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--pc-line-soft);
}

.page-contact .pc-step__body p {
  margin: 0 0 0.6rem;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--pc-soft-text);
}

.page-contact .pc-step__body p.label {
  margin-bottom: 0;
  color: var(--fog);
}

.page-contact .pc-process__note {
  max-width: 42rem;
  margin: clamp(1.5rem, 4vw, 2.1rem) 0 0;
  padding-left: 0.9rem;
  border-left: 2px solid var(--amber);
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--fog);
}

/* ---------- 联系方式 ---------- */
.page-contact .pc-contact {
  background: var(--ink-2);
}

.page-contact .pc-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.8rem);
  align-items: start;
}

.page-contact .pc-contact__media {
  margin: 0;
}

.page-contact .pc-contact__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
  border: 1px solid var(--pc-line-soft);
  filter: saturate(0.85) contrast(1.05);
}

.page-contact .pc-plate {
  position: relative;
  margin-top: clamp(1.4rem, 3vw, 2rem);
  padding: 1.5rem 1.3rem 3.1rem;
  background: linear-gradient(155deg, rgba(20, 52, 44, 0.96), rgba(5, 19, 15, 0.97));
  border: 1px solid var(--pc-line);
  box-shadow: 8px 8px 0 rgba(5, 19, 15, 0.55);
}

.page-contact .pc-plate::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid rgba(244, 246, 241, 0.09);
  pointer-events: none;
}

.page-contact .pc-plate__head {
  margin: 0 0 1.15rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-contact .pc-plate__list {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
}

.page-contact .pc-plate__row {
  display: grid;
  grid-template-columns: 5.2rem minmax(0, 1fr);
  gap: 0.8rem;
  align-items: baseline;
  padding-bottom: 0.8rem;
  border-bottom: 1px dashed var(--pc-line-soft);
}

.page-contact .pc-plate__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .pc-plate__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--fog);
}

.page-contact .pc-plate__row dd {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--chalk);
  overflow-wrap: anywhere;
}

.page-contact .pc-plate__mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.02rem;
  letter-spacing: 0.01em;
  color: var(--lime-soft);
}

.page-contact .pc-plate__note {
  max-width: 36rem;
  margin: 1.15rem 0 0;
  font-size: 0.84rem;
  line-height: 1.76;
  color: var(--fog);
}

.page-contact .pc-plate__note a {
  color: var(--lime-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .pc-plate__seal {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  padding: 0.28rem 0.46rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
  background: rgba(255, 138, 71, 0.06);
  border: 1px solid var(--pc-amber-line);
  transform: rotate(-3deg);
}

/* ---------- 反馈与纠错 ---------- */
.page-contact .pc-feedback {
  background: var(--ink-3);
}

.page-contact .pc-feedback__inner {
  max-width: 48rem;
}

.page-contact .pc-feedback p {
  max-width: 41rem;
  margin: 0 0 0.9rem;
  font-size: 0.94rem;
  line-height: 1.82;
  color: var(--pc-soft-text);
}

.page-contact .pc-feedback__flow {
  display: grid;
  gap: 0.85rem;
  margin: 1.7rem 0 1.5rem;
  padding: 0;
  list-style: none;
  counter-reset: fb;
}

.page-contact .pc-feedback__flow li {
  counter-increment: fb;
  position: relative;
  padding: 0.95rem 1rem 0.95rem 3.2rem;
  background: rgba(20, 52, 44, 0.45);
  border-left: 1px solid var(--pc-amber-line);
  font-size: 0.92rem;
  line-height: 1.76;
  color: rgba(244, 246, 241, 0.86);
}

.page-contact .pc-feedback__flow li::before {
  content: "0" counter(fb);
  position: absolute;
  left: 0.95rem;
  top: 1rem;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--amber);
}

/* ---------- 常见问题 ---------- */
.page-contact .pc-faq {
  background: var(--ink-2);
}

.page-contact .pc-faq__list {
  display: grid;
  gap: 0.7rem;
  max-width: 52rem;
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
}

.page-contact .pc-faq__item {
  background: rgba(10, 36, 32, 0.62);
  border: 1px solid var(--pc-line-soft);
  transition: border-color 0.22s ease, background 0.22s ease;
}

.page-contact .pc-faq__item[open] {
  background: rgba(10, 36, 32, 0.92);
  border-color: var(--pc-line);
}

.page-contact .pc-faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--chalk);
}

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

.page-contact .pc-faq__item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  color: var(--lime);
}

.page-contact .pc-faq__item[open] summary::after {
  content: "−";
}

.page-contact .pc-faq__item p {
  margin: 0;
  padding: 0 1.1rem 1.1rem;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--pc-soft-text);
}

.page-contact .pc-faq__item p a {
  color: var(--lime-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .pc-faq__tail {
  max-width: 46rem;
  margin: 1.5rem 0 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--fog);
}

/* ---------- 响应式 ---------- */
@media (max-width: 480px) {
  .page-contact .pc-plate__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.3rem;
  }

  .page-contact .pc-route {
    padding-right: 1rem;
  }
}

@media (min-width: 768px) {
  .page-contact .pc-routes__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.4rem;
  }

  .page-contact .pc-route--lic {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.6rem);
  }

  .page-contact .pc-hero__media {
    transform: translateY(1rem) rotate(-0.8deg);
  }

  .page-contact .pc-contact__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    gap: clamp(2rem, 4vw, 3.2rem);
  }

  .page-contact .pc-contact__media {
    margin-top: clamp(1.4rem, 3vw, 2rem);
  }
}

@media (min-width: 940px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.8rem;
    align-items: start;
  }

  .page-contact .pc-steps::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 1.55rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--pc-line) 10%, var(--pc-line) 90%, transparent);
  }

  .page-contact .pc-step details {
    position: relative;
    background: rgba(20, 52, 44, 0.72);
  }
}

@media (min-width: 1060px) {
  .page-contact .pc-routes__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.5rem;
    align-items: start;
  }

  .page-contact .pc-route--data {
    grid-column: 1 / span 5;
  }

  .page-contact .pc-route--ops {
    grid-column: 6 / span 4;
    margin-top: 2.4rem;
  }

  .page-contact .pc-route--lic {
    grid-column: 10 / span 3;
    margin-top: 4.8rem;
  }
}

@media (hover: none) {
  .page-contact .pc-route__extra {
    max-height: 30rem;
    margin-top: 0.95rem;
    padding-top: 0.85rem;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    animation: none !important;
  }
}