.page-contact {
  --pc-cut: 22px;
  --pc-hair: rgba(22, 52, 44, .14);
  --pc-hair-gold: rgba(227, 184, 114, .28);
}

/* ============ 首屏 ============ */
.page-contact .pc-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(46px, 9vw, 94px)) 0 clamp(68px, 11vw, 118px);
  color: var(--paper);
  background:
    radial-gradient(115% 88% at 90% 4%, rgba(192, 138, 62, .32), transparent 60%),
    radial-gradient(90% 70% at 4% 100%, rgba(47, 214, 180, .10), transparent 62%),
    linear-gradient(158deg, var(--ink-green) 0%, var(--ink-green-deep) 100%);
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(26px, 5vw, 56px);
  background: var(--paper-2);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-contact .pc-crumbs {
  margin: 0 0 clamp(22px, 4vw, 38px);
  padding: 0;
}

.page-contact .pc-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.page-contact .pc-crumbs li {
  display: flex;
  align-items: center;
}

.page-contact .pc-crumbs li + li::before {
  content: "／";
  margin: 0 10px;
  color: rgba(246, 242, 233, .34);
}

.page-contact .pc-crumbs a {
  color: var(--copper-bright);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

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

.page-contact .pc-crumbs [aria-current="page"] {
  color: rgba(246, 242, 233, .68);
}

.page-contact .pc-hero h1 {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  font-size: clamp(30px, 6.2vw, 60px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
}

.page-contact .pc-hero h1 em {
  font-style: normal;
  color: var(--copper-bright);
}

.page-contact .pc-hero-lede {
  margin: 0 0 clamp(28px, 4vw, 38px);
  max-width: 36em;
  font-size: clamp(15px, 1.9vw, 17.5px);
  line-height: 1.9;
  color: rgba(246, 242, 233, .8);
}

.page-contact .pc-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-contact .pc-hero-actions .btn-ghost {
  color: var(--paper);
  border-color: rgba(246, 242, 233, .38);
}

.page-contact .pc-hero-actions .btn-ghost:hover,
.page-contact .pc-hero-actions .btn-ghost:focus-visible {
  color: var(--ink-green);
  background: var(--copper-bright);
  border-color: var(--copper-bright);
}

.page-contact .pc-hero-facts {
  list-style: none;
  margin: clamp(34px, 5vw, 54px) 0 0;
  padding: clamp(22px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--pc-hair-gold);
  display: grid;
  gap: 20px 32px;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
}

.page-contact .pc-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-contact .pc-hero-facts .mono {
  color: var(--copper-bright);
  font-size: clamp(16px, 2.5vw, 22px);
  font-weight: 700;
  letter-spacing: .01em;
}

.page-contact .pc-hero-facts li > span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(246, 242, 233, .6);
}

/* ============ 01 提交路径 ============ */
.page-contact .pc-submit-media {
  margin: clamp(28px, 4.4vw, 46px) 0 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .pc-submit-media img {
  display: block;
  width: 100%;
  height: clamp(190px, 34vw, 360px);
  object-fit: cover;
  filter: saturate(.94) contrast(1.03);
}

.page-contact .pc-submit-media .media-caption {
  margin: 0;
  padding: 12px 16px 0;
  font-size: 12.5px;
  color: var(--muted);
  background: var(--paper-2);
}

.page-contact .pc-steps {
  list-style: none;
  margin: clamp(28px, 4.4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr;
}

.page-contact .pc-step details {
  height: 100%;
  padding: 24px 20px 20px;
  background: var(--paper);
  border: 1px solid var(--pc-hair);
  border-top: 3px solid var(--copper);
  clip-path: polygon(0 0, calc(100% - var(--pc-cut)) 0, 100% var(--pc-cut), 100% 100%, 0 100%);
  transition: border-top-color .2s var(--ease), transform .2s var(--ease);
}

.page-contact .pc-step details:hover {
  border-top-color: var(--electric);
}

.page-contact .pc-step summary {
  list-style: none;
  cursor: pointer;
  display: block;
}

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

.page-contact .pc-step summary::marker {
  content: "";
}

.page-contact .pc-step-idx {
  display: block;
  margin-bottom: 14px;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--copper);
}

.page-contact .pc-step-name {
  display: block;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink-green);
  letter-spacing: -.01em;
}

.page-contact .pc-step summary::after {
  content: "＋ 看必填说明";
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--copper-deep);
}

.page-contact .pc-step details[open] summary::after {
  content: "－ 收起说明";
  color: var(--clay);
}

.page-contact .pc-step-body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed rgba(22, 52, 44, .22);
}

.page-contact .pc-step-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .pc-step-body strong {
  font-weight: 700;
  color: var(--copper-deep);
}

/* ============ 02 处理时间带 ============ */
.page-contact .pc-timeline {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4.4vw, 48px) 0 0;
  padding: 0 0 0 26px;
  display: grid;
  gap: 26px;
}

.page-contact .pc-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: rgba(196, 100, 58, .32);
}

.page-contact .pc-tl-item {
  position: relative;
}

.page-contact .pc-tl-item::after {
  content: "";
  position: absolute;
  left: -26px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--clay);
}

.page-contact .pc-tl-time {
  display: block;
  margin-bottom: 8px;
  font-size: clamp(17px, 2.6vw, 21px);
  font-weight: 700;
  color: var(--copper-deep);
  letter-spacing: .01em;
}

.page-contact .pc-tl-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink-green);
  letter-spacing: -.01em;
}

.page-contact .pc-tl-text {
  margin: 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 03 联络信息 ============ */
.page-contact .pc-contact-media {
  margin: clamp(28px, 4.4vw, 46px) 0 0;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-contact .pc-contact-media img {
  display: block;
  width: 100%;
  height: clamp(150px, 26vw, 260px);
  object-fit: cover;
  opacity: .92;
}

.page-contact .pc-lines {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .pc-line {
  display: grid;
  gap: 16px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--paper);
  border-left: 3px solid var(--copper);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%);
}

.page-contact .pc-line-no {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--clay);
}

.page-contact .pc-line-name {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--ink-green);
  letter-spacing: -.01em;
}

.page-contact .pc-line-fit {
  margin: 0;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .pc-line-val {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.page-contact .pc-val {
  flex: 1 1 100%;
  font-size: clamp(15px, 2.4vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--copper-deep);
  word-break: break-word;
}

.page-contact .pc-line-val .chip-copy {
  border-color: var(--copper);
  color: var(--copper-deep);
}

.page-contact .pc-line-val .chip-copy:hover,
.page-contact .pc-line-val .chip-copy:focus-visible {
  border-color: var(--electric);
  color: var(--ink-green);
  background: rgba(47, 214, 180, .14);
}

.page-contact .pc-line-note {
  flex: 1 1 100%;
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--pc-hair);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ 04 适用场景（分段切换） ============ */
.page-contact .pc-tabs {
  margin-top: clamp(28px, 4.4vw, 46px);
}

.page-contact .pc-tabs .tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  border-bottom: 1px solid var(--pc-hair);
}

.page-contact .pc-tabs .tab {
  appearance: none;
  border: 1px solid var(--pc-hair);
  border-bottom: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--font-sans);
  font-size: 14.5px;
  font-weight: 700;
  padding: 12px 20px;
  cursor: pointer;
  clip-path: polygon(12px 0, 100% 0, 100% 100%, 0 100%, 0 12px);
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .pc-tabs .tab:hover {
  color: var(--ink-green);
  background: rgba(192, 138, 62, .12);
}

.page-contact .pc-tabs .tab[aria-selected="true"] {
  background: var(--ink-green);
  color: var(--copper-bright);
  border-color: var(--ink-green);
}

.page-contact .pc-panel {
  padding: clamp(22px, 3.2vw, 34px);
  background: var(--paper-2);
  border-top: 2px solid var(--copper);
}

.page-contact .pc-panel + .pc-panel {
  margin-top: 16px;
}

.page-contact .pc-panel-title {
  margin: 0 0 12px;
  font-size: clamp(17px, 2.4vw, 20px);
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink-green);
  letter-spacing: -.01em;
}

.page-contact .pc-panel-text {
  margin: 0 0 18px;
  max-width: 36em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .pc-panel-req {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .pc-panel-req li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-left: 16px;
  position: relative;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .pc-panel-req li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 8px;
  background: var(--clay);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-contact .pc-panel-req .mono {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 700;
  color: var(--copper-deep);
  letter-spacing: .02em;
}

/* ============ 05 填写建议 ============ */
.page-contact .pc-advice {
  list-style: none;
  counter-reset: pc-adv;
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .pc-advice li {
  counter-increment: pc-adv;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 22px) clamp(18px, 2.6vw, 26px);
  background: var(--paper);
  border-top: 1px solid var(--pc-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-contact .pc-advice li::before {
  content: counter(pc-adv, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--copper-deep);
}

.page-contact .pc-advice h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.55;
  color: var(--ink-green);
  letter-spacing: -.01em;
}

.page-contact .pc-advice p {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 06 协作联络 ============ */
.page-contact .pc-partner .section-title {
  color: var(--paper);
}

.page-contact .pc-partner .section-lede {
  color: rgba(246, 242, 233, .74);
}

.page-contact .pc-partner .section-index {
  color: var(--copper-bright);
}

.page-contact .pc-partner-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(28px, 4.4vw, 48px);
  border: 1px solid var(--pc-hair-gold);
  background: var(--pc-hair-gold);
}

.page-contact .pc-partner-card {
  padding: clamp(22px, 3vw, 30px);
  background: var(--ink-green);
}

.page-contact .pc-partner-card h3 {
  margin: 0 0 12px;
  font-size: 17px;
  font-weight: 800;
  color: var(--copper-bright);
  letter-spacing: -.01em;
}

.page-contact .pc-partner-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(246, 242, 233, .76);
}

.page-contact .pc-partner-foot {
  margin-top: clamp(26px, 4vw, 42px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--pc-hair-gold);
}

.page-contact .pc-partner-kicker {
  display: block;
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--copper-bright);
}

.page-contact .pc-partner-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.page-contact .pc-partner-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(246, 242, 233, .82);
}

.page-contact .pc-partner-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 9px;
  height: 9px;
  border: 1px solid var(--copper-bright);
  transform: rotate(45deg);
}

.page-contact .pc-partner-cta {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(246, 242, 233, .82);
}

.page-contact .pc-partner-cta .mono {
  color: var(--copper-bright);
  font-weight: 600;
  word-break: break-word;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-contact .pc-advice {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .pc-advice li:first-child {
    grid-column: 1 / -1;
  }

  .page-contact .pc-partner-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 28px;
  }
}

@media (min-width: 760px) {
  .page-contact .pc-line {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    align-items: center;
    gap: 28px;
  }

  .page-contact .pc-line-val {
    align-content: center;
  }
}

@media (min-width: 860px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }

  .page-contact .pc-step {
    position: relative;
  }

  .page-contact .pc-step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 40px;
    right: -26px;
    width: 26px;
    height: 1px;
    background: linear-gradient(90deg, var(--copper), rgba(192, 138, 62, .1));
    transform: rotate(-7deg);
    transform-origin: right center;
    pointer-events: none;
  }

  .page-contact .pc-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 30px;
    padding-left: 0;
  }

  .page-contact .pc-timeline::before {
    left: 0;
    right: 0;
    top: 9px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--copper) 0%, rgba(22, 52, 44, .16) 100%);
  }

  .page-contact .pc-tl-item {
    padding-top: 42px;
  }

  .page-contact .pc-tl-item::after {
    left: 0;
    top: 3px;
  }

  .page-contact .pc-partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-partner-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-contact .pc-advice {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-advice li:first-child {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-crumbs a,
  .page-contact .pc-step details,
  .page-contact .pc-tabs .tab,
  .page-contact .pc-line-val .chip-copy {
    transition: none;
  }
}