.page-contact {
  --pc-cut: 18px;
  --pc-cut-sm: 10px;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-intro {
  padding-bottom: 8px;
}

.page-contact .pc-intro__grid {
  display: grid;
  gap: 28px;
  grid-template-columns: 1fr;
}

.page-contact .pc-intro__main h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 7.6vw, 78px);
  line-height: 1.04;
  letter-spacing: -.015em;
  margin: 14px 0 20px;
  max-width: 15ch;
}

.page-contact .pc-intro__main mark {
  background: linear-gradient(transparent 62%, var(--yellow) 62%);
  color: inherit;
  padding: 0 3px;
}

.page-contact .pc-intro__main .lede {
  max-width: 42ch;
}

.page-contact .pc-intro__aside {
  background: var(--velvet);
  color: var(--paper);
  padding: 24px 22px 26px;
  display: grid;
  gap: 14px;
  justify-items: start;
  clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

.page-contact .pc-intro__hours {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--velvet);
  background: var(--yellow);
  padding: 6px 12px 6px 10px;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  margin: 0;
}

.page-contact .pc-intro__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(246, 239, 221, .74);
}

@media (min-width: 920px) {
  .page-contact .pc-intro__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, .9fr);
    gap: 60px;
    align-items: end;
  }
}

/* ---------- 通道选择 ---------- */
.page-contact .pc-channels-list__head {
  display: grid;
  gap: 26px;
  grid-template-columns: 1fr;
  margin-bottom: 34px;
}

.page-contact .pc-channels-list__lead .lede {
  margin-top: 12px;
  max-width: 46ch;
}

.page-contact .pc-channels-list__figure {
  margin: 0;
  max-width: 260px;
}

.page-contact .pc-channels-list__figure .figure__frame {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  clip-path: polygon(24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%, 0 24px);
  background: var(--mist);
}

.page-contact .pc-channels-list__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 880px) {
  .page-contact .pc-channels-list__head {
    grid-template-columns: minmax(0, 1fr) 260px;
    gap: 48px;
    align-items: end;
  }
}

.page-contact .pc-channels-list__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .page-contact .pc-channels-list__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-contact .pc-channels-list__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-contact .pc-channel {
  --pc-accent: var(--lark);
  position: relative;
  background: var(--float);
  border: 1px solid var(--line);
  border-top: 6px solid var(--pc-accent);
  padding: 20px 20px 18px;
  display: grid;
  gap: 10px;
  align-content: start;
  clip-path: polygon(var(--pc-cut) 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%, 0 var(--pc-cut));
  transition: transform .3s var(--ease), background-color .3s var(--ease);
}

.page-contact .pc-channel--ember { --pc-accent: var(--ember); }
.page-contact .pc-channel--green { --pc-accent: var(--lark); }
.page-contact .pc-channel--neon { --pc-accent: var(--neon); }
.page-contact .pc-channel--yellow { --pc-accent: var(--yellow); }

.page-contact .pc-channel:hover {
  transform: translateY(-5px);
  background: #FCF8EE;
}

.page-contact .pc-channel__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--pc-accent);
}

.page-contact .pc-channel__title {
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.25;
  margin: 0;
}

.page-contact .pc-channel__scene {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-70);
}

.page-contact .pc-channel__more {
  margin-top: 4px;
  border-top: 1px dashed var(--line);
  padding-top: 12px;
  font-size: 14px;
}

.page-contact .pc-channel__more summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  color: var(--velvet);
}

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

.page-contact .pc-channel__more summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--pc-accent);
  line-height: 1;
}

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

.page-contact .pc-channel__more ul {
  margin: 10px 0 0;
  padding-left: 17px;
  display: grid;
  gap: 6px;
  color: var(--ink-70);
  line-height: 1.65;
}

/* ---------- 客服渠道 ---------- */
.page-contact .pc-service h2 {
  color: var(--paper);
}

.page-contact .pc-service .eyebrow {
  color: var(--yellow);
}

.page-contact .pc-service__grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr;
  margin-top: 30px;
}

@media (min-width: 900px) {
  .page-contact .pc-service__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }
}

.page-contact .pc-service__rows {
  border-top: 1px solid var(--line-paper);
}

.page-contact .pc-service__row {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-paper);
}

@media (min-width: 660px) {
  .page-contact .pc-service__row {
    grid-template-columns: 80px minmax(0, 1fr);
    column-gap: 24px;
    align-items: start;
  }
}

.page-contact .pc-service__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--yellow);
  padding-top: 4px;
}

.page-contact .pc-service__body {
  display: grid;
  gap: 8px;
  justify-items: start;
}

.page-contact .pc-service__value {
  font-family: var(--font-mono);
  font-size: clamp(14px, 3.6vw, 19px);
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 2px solid rgba(255, 197, 61, .55);
  padding-bottom: 2px;
  overflow-wrap: anywhere;
}

.page-contact .pc-service__value:hover {
  border-bottom-color: var(--yellow);
}

.page-contact .pc-service__value--plain {
  border-bottom-color: transparent;
}

.page-contact .pc-service__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(246, 239, 221, .74);
  max-width: 46ch;
}

.page-contact .pc-service__advice {
  border-left: 4px solid var(--lark);
  background: rgba(246, 239, 221, .07);
  padding: 20px 22px 22px;
}

.page-contact .pc-service__advice h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--paper);
}

.page-contact .pc-service__advice ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(246, 239, 221, .78);
}

/* ---------- 处理流程 ---------- */
.page-contact .pc-flow__figure {
  margin: 26px 0 34px;
}

.page-contact .pc-flow__figure .figure__frame {
  aspect-ratio: 11 / 5;
  overflow: hidden;
  background: var(--mist);
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

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

@media (max-width: 719px) {
  .page-contact .pc-flow__figure .figure__frame {
    aspect-ratio: 4 / 3;
  }
}

.page-contact .pc-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  grid-template-columns: 1fr;
  counter-reset: pc-flow;
}

@media (min-width: 820px) {
  .page-contact .pc-flow__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }
}

.page-contact .pc-flow__node {
  position: relative;
  counter-increment: pc-flow;
  padding: 4px 0 26px 20px;
  border-left: 3px solid var(--line);
}

@media (min-width: 820px) {
  .page-contact .pc-flow__node {
    padding: 26px 18px 6px 0;
    border-left: 0;
    border-top: 3px solid var(--line);
  }
}

.page-contact .pc-flow__node::after {
  content: "";
  position: absolute;
  top: 0;
  left: -3px;
  width: 3px;
  height: 32px;
  background: var(--lark);
}

@media (min-width: 820px) {
  .page-contact .pc-flow__node::after {
    top: -3px;
    left: 0;
    width: 40px;
    height: 3px;
  }
}

.page-contact .pc-flow__node::before {
  content: counter(pc-flow, decimal-leading-zero);
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--ember);
  margin-bottom: 8px;
}

.page-contact .pc-flow__node h3 {
  font-family: var(--font-display);
  font-size: 19px;
  margin: 0 0 8px;
}

.page-contact .pc-flow__node p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-70);
  max-width: 36ch;
}

/* ---------- 资料协作 ---------- */
.page-contact .pc-collab {
  background: var(--mist);
}

.page-contact .pc-collab__grid {
  display: grid;
  gap: 30px;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .page-contact .pc-collab__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 56px;
    align-items: start;
  }
}

.page-contact .pc-collab__text p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(34, 26, 20, .82);
  max-width: 46ch;
}

.page-contact .pc-mail {
  font-family: var(--font-mono);
  color: var(--velvet);
  text-decoration: none;
  border-bottom: 2px solid var(--ember);
  padding-bottom: 1px;
  overflow-wrap: anywhere;
}

.page-contact .pc-collab__panel {
  background: var(--velvet);
  color: var(--paper);
  padding: 26px 24px 28px;
  clip-path: polygon(22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%, 0 22px);
}

.page-contact .pc-collab__panel h3 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--yellow);
  letter-spacing: .01em;
}

.page-contact .pc-collab__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 15px;
}

.page-contact .pc-collab__list li {
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  column-gap: 12px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(246, 239, 221, .82);
}

.page-contact .pc-collab__list li::before {
  content: "";
  width: 10px;
  height: 10px;
  margin-top: 8px;
  justify-self: start;
  background: var(--lark);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

/* ---------- 主体与备案横条 ---------- */
.page-contact .pc-subject {
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.page-contact .pc-subject__inner {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
  padding: 26px 0 28px;
}

@media (min-width: 820px) {
  .page-contact .pc-subject__inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
    align-items: start;
  }
}

.page-contact .pc-subject__item {
  display: grid;
  gap: 6px;
}

.page-contact .pc-subject__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--ember);
}

.page-contact .pc-subject__value {
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
}

/* ---------- 常见咨询 ---------- */
.page-contact .pc-faq__wall {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  margin-top: 28px;
}

@media (min-width: 760px) {
  .page-contact .pc-faq__wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 20px;
  }
}

.page-contact .pc-qa {
  background: var(--float);
  border: 1px solid var(--line);
  border-left: 4px solid var(--lark);
  padding: 16px 18px 17px;
}

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

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

.page-contact .pc-qa summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  color: var(--velvet);
  line-height: 1.55;
}

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

.page-contact .pc-qa summary::after {
  content: "▾";
  font-size: 12px;
  color: var(--ember);
  transition: transform .25s var(--ease);
  flex: none;
}

.page-contact .pc-qa[open] summary::after {
  transform: rotate(180deg);
}

.page-contact .pc-qa p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-70);
}

.page-contact .pc-faq__more {
  margin: 26px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-70);
}

.page-contact .pc-faq__more a {
  color: var(--velvet);
  text-decoration: none;
  border-bottom: 2px solid var(--yellow);
  padding-bottom: 1px;
}

@media (max-width: 480px) {
  .page-contact .pc-intro__aside {
    padding: 20px 18px 22px;
  }
  .page-contact .pc-channel {
    padding: 18px 16px 16px;
  }
  .page-contact .pc-collab__panel {
    padding: 22px 18px 24px;
  }
  .page-contact .pc-service__advice {
    padding: 18px 16px 20px;
  }
}
<<<END>>>