.page-contact {
  --pc-region-d: #4E7FB8;
  --pc-region-e: #7C8CA8;
  --pc-card-pad: clamp(20px, 2.4vw, 28px);
  --pc-gap: clamp(16px, 2vw, 24px);
  position: relative;
  background-image:
    radial-gradient(circle at 84% 6%, rgba(37, 224, 196, 0.10), transparent 42%),
    radial-gradient(circle at 8% 26%, rgba(108, 107, 255, 0.10), transparent 46%);
  background-repeat: no-repeat;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-contact .section {
  padding-block: clamp(44px, 6vw, 84px);
  border-top: 1px solid var(--border);
}

.page-contact .section-title {
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.2;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + clamp(56px, 8vw, 104px));
  padding-bottom: clamp(36px, 5vw, 64px);
}

.page-contact .pc-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: min(62vw, 760px);
  height: 100%;
  background: linear-gradient(152deg, rgba(37, 224, 196, 0.20), rgba(108, 107, 255, 0.14) 46%, transparent 74%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  top: 22%;
  right: -6%;
  width: min(46vw, 560px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
  transform: rotate(-13deg);
  opacity: 0.65;
  pointer-events: none;
}

.page-contact .pc-crumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

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

.page-contact .pc-crumb .crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

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

.page-contact .pc-crumb .crumb a:hover {
  color: var(--cyan);
}

.page-contact .pc-crumb .crumb [aria-current="page"] {
  color: var(--mist);
}

.page-contact .pc-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 3vw, 40px);
}

.page-contact .pc-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(29px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--mist);
  max-width: 18ch;
}

.page-contact .pc-hero__text {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: rgba(233, 239, 247, 0.86);
}

.page-contact .pc-hero__aside {
  align-self: end;
  background: rgba(17, 28, 47, 0.78);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}

.page-contact .pc-aside__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .pc-quick {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
}

.page-contact .pc-quick a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  color: var(--mist);
  font-size: 15px;
  text-decoration: none;
  transition: color 0.3s var(--ease), padding-left 0.3s var(--ease);
}

.page-contact .pc-quick li:last-child a {
  border-bottom: 0;
}

.page-contact .pc-quick a:hover,
.page-contact .pc-quick a:focus-visible {
  color: var(--cyan);
  padding-left: 4px;
}

.page-contact .pc-quick a span {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.page-contact .pc-hero__stats {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 4vw, 48px);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .pc-stat {
  background: var(--surface);
  padding: 18px clamp(16px, 2vw, 22px);
}

.page-contact .pc-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-contact .pc-stat__num small {
  font-size: 0.46em;
  margin-left: 4px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.page-contact .pc-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 合作方式 ---------- */
.page-contact .pc-cards {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(24px, 3.4vw, 40px);
}

.page-contact .pc-card {
  position: relative;
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--pc-card-pad);
  overflow: hidden;
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease);
}

.page-contact .pc-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--cyan);
}

.page-contact .pc-card--amber::before {
  background: var(--amber);
}

.page-contact .pc-card--indigo::before {
  background: var(--indigo);
}

.page-contact .pc-card:hover,
.page-contact .pc-card:focus-within {
  border-color: var(--cyan);
  transform: translateY(-3px);
}

.page-contact .pc-card--amber:hover,
.page-contact .pc-card--amber:focus-within {
  border-color: var(--amber);
}

.page-contact .pc-card--indigo:hover,
.page-contact .pc-card--indigo:focus-within {
  border-color: var(--indigo);
}

.page-contact .pc-card__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .pc-card--amber .pc-card__tag {
  color: var(--amber);
}

.page-contact .pc-card--indigo .pc-card__tag {
  color: var(--indigo);
}

.page-contact .pc-card__title {
  margin: 10px 0 0;
  font-size: clamp(19px, 2vw, 23px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--mist);
}

.page-contact .pc-card__for {
  margin: 12px 0 0;
  font-size: 14.6px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .pc-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .pc-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.6px;
  line-height: 1.7;
  color: rgba(233, 239, 247, 0.86);
}

.page-contact .pc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .pc-card--amber .pc-list li::before {
  background: var(--amber);
}

.page-contact .pc-card--indigo .pc-list li::before {
  background: var(--indigo);
}

.page-contact .pc-list--inline li::before {
  background: var(--amber);
}

.page-contact details {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.page-contact summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

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

.page-contact summary::after {
  content: "＋";
  font-size: 13px;
  color: var(--muted);
}

.page-contact details[open] summary::after {
  content: "－";
  color: var(--amber);
}

.page-contact .pc-card--amber summary {
  color: var(--amber);
}

.page-contact .pc-card--indigo summary {
  color: var(--indigo);
}

.page-contact .pc-detail {
  padding-top: 10px;
  font-size: 14.2px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .pc-detail p {
  margin: 0;
}

.page-contact .pc-ways__figure {
  margin: clamp(26px, 3.6vw, 44px) 0 0;
}

.page-contact .figure-frame {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--hull);
}

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

.page-contact .figure-frame figcaption {
  padding: 12px 18px 14px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

/* ---------- 支持内容 ---------- */
.page-contact .pc-support {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .pc-support__item {
  min-width: 0;
  background: rgba(17, 28, 47, 0.72);
  border: 1px solid var(--border);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
}

.page-contact .pc-support__item:nth-child(3n + 2) {
  border-left-color: var(--amber);
}

.page-contact .pc-support__item:nth-child(3n) {
  border-left-color: var(--indigo);
}

.page-contact .pc-support__id {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .pc-support__title {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--mist);
}

.page-contact .pc-support__text {
  margin: 9px 0 0;
  font-size: 14.4px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .pc-region {
  margin-top: clamp(26px, 3.6vw, 44px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  padding: clamp(20px, 2.6vw, 30px);
}

.page-contact .pc-region__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .pc-region__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--mist);
}

.page-contact .pc-region__sub {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

.page-contact .pc-region__bar {
  display: flex;
  gap: 2px;
  height: 54px;
  margin-top: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-contact .pc-region__seg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--abyss);
  background-image: radial-gradient(rgba(10, 17, 32, 0.3) 1px, transparent 1.3px);
  background-size: 5px 5px;
}

.page-contact .pc-region__seg--a {
  flex: 14;
  background-color: var(--cyan);
}

.page-contact .pc-region__seg--b {
  flex: 8;
  background-color: var(--amber);
}

.page-contact .pc-region__seg--c {
  flex: 7;
  background-color: var(--indigo);
  color: var(--mist);
}

.page-contact .pc-region__seg--d {
  flex: 5;
  background-color: var(--pc-region-d);
  color: var(--mist);
}

.page-contact .pc-region__seg--e {
  flex: 4;
  background-color: var(--pc-region-e);
  color: var(--mist);
}

.page-contact .pc-region__legend {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px 16px;
  margin: 16px 0 0;
  padding: 0;
  font-size: 13.5px;
  color: var(--muted);
}

.page-contact .pc-region__legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-contact .pc-region__legend .mono {
  margin-left: auto;
  color: var(--mist);
}

.page-contact .pc-dot {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--cyan);
  flex: none;
}

.page-contact .pc-dot--b {
  background: var(--amber);
}

.page-contact .pc-dot--c {
  background: var(--indigo);
}

.page-contact .pc-dot--d {
  background: var(--pc-region-d);
}

.page-contact .pc-dot--e {
  background: var(--pc-region-e);
}

/* ---------- 流程 ---------- */
.page-contact .pc-flow {
  position: relative;
  display: grid;
  gap: 22px;
  margin-top: clamp(26px, 3.6vw, 44px);
}

.page-contact .pc-flow__line {
  display: none;
}

.page-contact .pc-step {
  min-width: 0;
}

.page-contact .pc-step__node {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--abyss);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .pc-step:nth-of-type(3) .pc-step__node {
  color: var(--amber);
}

.page-contact .pc-step__title {
  margin: 14px 0 0;
  font-size: 17.5px;
  font-weight: 800;
  color: var(--mist);
}

.page-contact .pc-step__text {
  margin: 9px 0 0;
  font-size: 14.4px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .pc-flow__foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 16px 20px;
  border-left: 2px solid var(--amber);
  background: rgba(17, 28, 47, 0.6);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14.6px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 224, 196, 0.4);
  margin-left: 6px;
}

.page-contact .link:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 售后 ---------- */
.page-contact .pc-service {
  display: grid;
  gap: clamp(22px, 3vw, 38px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .pc-service__body {
  min-width: 0;
}

.page-contact .pc-service__body p {
  margin: 0 0 16px;
  font-size: 15.6px;
  line-height: 1.85;
  color: rgba(233, 239, 247, 0.86);
  max-width: 66ch;
}

.page-contact .pc-service__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-contact .pc-service__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  background: var(--surface);
  padding: 14px 18px;
  font-size: 14.4px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .pc-service__list .mono {
  color: var(--cyan);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  flex: none;
}

.page-contact .pc-service__link {
  margin: 20px 0 0;
  font-size: 14.6px;
}

.page-contact .pc-service__link .link {
  margin-left: 0;
}

/* ---------- 联系 ---------- */
.page-contact .pc-contact {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 32px);
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .pc-contact__row {
  min-width: 0;
  background: var(--surface);
  padding: 20px clamp(18px, 2.4vw, 26px);
}

.page-contact .pc-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .pc-contact__value {
  margin: 9px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 19px);
  letter-spacing: 0.03em;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .pc-contact__value--plain {
  font-family: var(--font-body);
  font-size: clamp(14.6px, 1.5vw, 16.5px);
  line-height: 1.7;
  letter-spacing: 0.01em;
}

.page-contact .pc-contact__tips {
  margin-top: 20px;
  font-size: 14.4px;
  color: var(--muted);
}

.page-contact .pc-contact__tips > p {
  margin: 0;
}

.page-contact .pc-contact__tips .pc-list {
  margin-top: 12px;
}

/* ---------- 常见问题 ---------- */
.page-contact .pc-faq {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .pc-faq details {
  margin: 0;
  padding: 16px clamp(18px, 2.2vw, 24px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.3s var(--ease);
}

.page-contact .pc-faq details[open] {
  border-color: var(--line);
}

.page-contact .pc-faq summary {
  font-size: 13px;
  color: var(--mist);
  font-family: var(--font-body);
  letter-spacing: 0;
  font-weight: 700;
}

.page-contact .pc-faq details[open] summary {
  color: var(--cyan);
}

.page-contact .pc-faq__a {
  padding-top: 12px;
  font-size: 14.4px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 78ch;
}

.page-contact .pc-faq__foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
  font-size: 14.4px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .pc-faq__foot .link {
  margin-left: 2px;
}

@media (min-width: 760px) {
  .page-contact .pc-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-contact .pc-contact__row--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-contact .pc-cards {
    grid-template-columns: 1.15fr 1fr 0.85fr;
    align-items: start;
  }

  .page-contact .pc-card:nth-child(2) {
    margin-top: 30px;
  }

  .page-contact .pc-card:nth-child(3) {
    margin-top: 62px;
  }

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

  .page-contact .pc-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .pc-flow__line {
    display: block;
    position: absolute;
    left: 8px;
    right: 8px;
    top: 19px;
    width: calc(100% - 16px);
    height: 4px;
    opacity: 0.9;
  }

  .page-contact .pc-service {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-contact .pc-ways__figure {
    max-width: 1100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-card,
  .page-contact .pc-quick a,
  .page-contact .pc-faq details {
    transition: none;
  }

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