.page-contact {
  --pc-rail-pad: 24px;
  color: var(--ink);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding-top: 20px;
  padding-bottom: 4px;
  font-size: 13px;
  color: var(--ink-2);
}

.page-contact .breadcrumb a {
  color: var(--ink-2);
  text-decoration: none;
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-contact .breadcrumb span[aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding: 28px 0 64px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.page-contact .pc-hero__deco {
  position: absolute;
  top: -6px;
  right: -10px;
  font-family: var(--font-mono);
  font-size: clamp(80px, 24vw, 230px);
  font-weight: 900;
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: transparent;
  -webkit-text-stroke: 1px var(--line);
  pointer-events: none;
  user-select: none;
}

.page-contact .pc-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .pc-hero h1 {
  margin: 14px 0 20px;
  max-width: 15ch;
  font-size: clamp(32px, 7.4vw, 78px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--ink);
}

.page-contact .pc-hero__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-long);
}

.page-contact .pc-hero__points {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-contact .pc-hero__points li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-2);
}

.page-contact .pc-hero__points .num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .pc-hero__cta {
  margin: 36px 0 0;
}

/* ---------- 分屏骨架 ---------- */
.page-contact .pc-shell {
  display: grid;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 80px;
}

.page-contact .pc-rail {
  align-self: start;
  padding: var(--pc-rail-pad) 20px calc(var(--pc-rail-pad) + 4px);
  background: var(--rail);
  border: 1px solid var(--line);
}

.page-contact .pc-rail__title {
  margin: 10px 0 18px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

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

.page-contact .pc-rail__row {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .pc-rail__row dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-contact .pc-rail__row dd {
  margin: 7px 0 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
}

.page-contact .pc-rail__value {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--cyan);
  word-break: break-all;
  font-variant-numeric: tabular-nums;
}

.page-contact .pc-rail__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-2);
}

/* ---------- 区块通用 ---------- */
.page-contact .pc-block {
  margin-top: 72px;
}

.page-contact .pc-block:first-child {
  margin-top: 0;
}

.page-contact .section-head__title {
  margin: 10px 0 12px;
  font-size: clamp(24px, 4.6vw, 34px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-contact .pc-block__lead {
  max-width: 60ch;
  margin: 0 0 28px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-long);
}

.page-contact .pc-links {
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-contact .pc-links a,
.page-contact .pc-gain a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 240, 206, 0.4);
}

.page-contact .pc-links a:hover,
.page-contact .pc-links a:focus-visible,
.page-contact .pc-gain a:hover,
.page-contact .pc-gain a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ---------- 合作方向错位卡 ---------- */
.page-contact .pc-dirs {
  display: grid;
  gap: 18px;
}

.page-contact .pc-dir {
  position: relative;
  padding: 24px 20px 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color 0.12s var(--ease), transform 0.12s var(--ease);
}

.page-contact .pc-dir:hover {
  border-color: var(--cyan-deep);
  transform: translateY(-2px);
}

.page-contact .pc-dir__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sand);
}

.page-contact .pc-dir h3 {
  margin: 10px 0 8px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .pc-dir__for {
  margin: 0 0 16px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-deep);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-contact .pc-dir__body {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-long);
}

.page-contact .pc-dir__need {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-contact .pc-dir__need strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 视觉图 ---------- */
.page-contact .pc-visual {
  position: relative;
  margin: 56px 0 0;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink-dark);
}

.page-contact .pc-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.82;
}

.page-contact .pc-visual__tag {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: var(--rail);
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
}

/* ---------- 流程 ---------- */
.page-contact .pc-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-contact .pc-flow__item {
  position: relative;
  padding-top: 26px;
}

.page-contact .pc-flow__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--line);
}

.page-contact .pc-flow__item::after {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(51, 240, 206, 0.12);
}

.page-contact .pc-flow__step {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--sand);
}

.page-contact .pc-flow__item h3 {
  margin: 8px 0 10px;
  font-size: 19px;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .pc-flow__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* ---------- 权益细线网格 ---------- */
.page-contact .pc-gains {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .pc-gain {
  padding: 22px 18px 24px;
  background: var(--rail);
}

.page-contact .pc-gain__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .pc-gain p {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-long);
}

/* ---------- 表单区 ---------- */
.page-contact .pc-ask {
  padding: 64px 0 88px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15, 33, 54, 0.45) 0%, rgba(6, 11, 20, 0) 70%);
}

.page-contact .pc-ask__head .pc-block__lead {
  margin-left: auto;
  margin-right: auto;
}

.page-contact .pc-ask .section-head {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.page-contact .pc-form {
  max-width: 660px;
  margin: 36px auto 0;
}

.page-contact .pc-field {
  margin-bottom: 26px;
}

.page-contact .pc-field label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.page-contact .pc-input,
.page-contact .pc-select,
.page-contact .pc-textarea {
  display: block;
  width: 100%;
  padding: 10px 2px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  transition: border-color 0.12s var(--ease), box-shadow 0.12s var(--ease);
}

.page-contact .pc-input::placeholder,
.page-contact .pc-textarea::placeholder {
  color: rgba(147, 169, 190, 0.65);
}

.page-contact .pc-select option {
  background: var(--panel);
  color: var(--ink);
}

.page-contact .pc-input:hover,
.page-contact .pc-select:hover,
.page-contact .pc-textarea:hover {
  border-bottom-color: var(--ink-2);
}

.page-contact .pc-input:focus,
.page-contact .pc-select:focus,
.page-contact .pc-textarea:focus {
  border-bottom-color: var(--cyan);
  box-shadow: 0 1px 0 0 var(--cyan);
}

.page-contact .pc-input:focus-visible,
.page-contact .pc-select:focus-visible,
.page-contact .pc-textarea:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-contact .pc-textarea {
  min-height: 104px;
  resize: vertical;
}

.page-contact .pc-form__note {
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-2);
  text-align: center;
}

/* ---------- 页尾氛围图 ---------- */
.page-contact .pc-night {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  background: var(--ink-dark);
}

.page-contact .pc-night img {
  display: block;
  width: 100%;
  height: clamp(220px, 40vw, 420px);
  max-width: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.page-contact .pc-night__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 26px;
}

.page-contact .pc-night__text {
  margin: 8px 0 0;
  font-size: clamp(18px, 3vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-contact .pc-hero {
    padding: 40px 0 88px;
  }

  .page-contact .pc-hero__points {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    gap: 40px;
  }

  .page-contact .pc-dirs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .pc-dirs > :nth-child(2),
  .page-contact .pc-dirs > :nth-child(4) {
    margin-top: 36px;
  }

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

  .page-contact .pc-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (min-width: 960px) {
  .page-contact .pc-shell {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 48px;
    padding-top: 88px;
    padding-bottom: 120px;
  }

  .page-contact .pc-rail {
    position: sticky;
    top: 116px;
    padding: 28px 24px 30px;
  }

  .page-contact .pc-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-block {
    margin-top: 88px;
  }

  .page-contact .pc-ask {
    padding: 88px 0 120px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-dir {
    transition: none;
  }

  .page-contact .pc-dir:hover {
    transform: none;
  }
}