.page-contact {
  --pc-rail-w: 330px;
  --pc-hair: rgba(91, 100, 112, .18);
  --pc-hair-soft: rgba(91, 100, 112, .12);
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  overflow: hidden;
  color: var(--on-dark-strong);
  padding: clamp(26px, 5vw, 48px) 0 clamp(44px, 7vw, 88px);
  background:
    radial-gradient(120% 92% at 86% 6%, rgba(201, 162, 39, .20) 0%, transparent 58%),
    linear-gradient(152deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-contact .pc-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    116deg,
    rgba(201, 162, 39, .06) 0 1px,
    transparent 1px 15px
  );
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-light) 22%, transparent 84%);
}

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

.page-contact .pc-hero__crumb {
  margin-bottom: clamp(22px, 4vw, 40px);
  color: var(--on-dark);
  font-size: .84rem;
}

.page-contact .pc-hero__crumb a {
  color: var(--gold-light);
  text-decoration: none;
}

.page-contact .pc-hero__crumb a:hover {
  text-decoration: underline;
}

.page-contact .pc-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 44px);
}

.page-contact .pc-hero__eyebrow {
  color: var(--gold-light);
  margin: 0;
}

.page-contact .pc-hero h1.page-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 7.4vw, 4.1rem);
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--on-dark-strong);
  margin: .22em 0 0;
}

.page-contact .pc-hero__lead {
  margin: 1.1em 0 0;
  max-width: 34em;
  font-size: clamp(.98rem, 2.5vw, 1.12rem);
  line-height: 1.9;
  color: var(--on-dark);
}

.page-contact .pc-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-contact .pc-chip {
  display: inline-block;
  padding: 7px 13px 8px 11px;
  border-left: 2px solid var(--gold);
  background: rgba(201, 162, 39, .10);
  color: var(--on-dark);
  font-size: .82rem;
  line-height: 1.5;
  letter-spacing: .02em;
}

.page-contact .pc-chip b {
  color: var(--gold-light);
  font-weight: 600;
  margin-right: .35em;
}

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

.page-contact .pc-hero__media img,
.page-contact .pc-mail__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 左右并置主体 ---------- */
.page-contact .pc-direct {
  padding-block: clamp(44px, 7vw, 88px);
}

.page-contact .pc-split {
  display: grid;
  gap: 40px;
}

.page-contact .pc-sticky {
  display: grid;
  gap: 18px;
}

/* ---------- 左侧联系信息 ---------- */
.page-contact .pc-card {
  padding: 22px 22px 24px;
  color: var(--on-dark-strong);
  background: linear-gradient(158deg, var(--ink-2) 0%, #15171d 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-contact .pc-card__eyebrow {
  margin: 0 0 .9em;
  color: var(--gold);
}

.page-contact .pc-big-value {
  margin: 0 0 1.1em;
  font-family: var(--font-mono);
  font-size: clamp(.94rem, 3.4vw, 1.1rem);
  line-height: 1.55;
  letter-spacing: -.005em;
  color: var(--on-dark-strong);
  overflow-wrap: anywhere;
}

.page-contact .pc-big-value--num {
  font-size: clamp(1.5rem, 6.4vw, 1.9rem);
  letter-spacing: .05em;
  color: var(--gold-light);
}

.page-contact .pc-copy {
  display: inline-block;
  padding: 9px 18px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: .82rem;
  letter-spacing: .05em;
  color: var(--gold);
  background: transparent;
  border: 1px solid var(--line);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}

.page-contact .pc-copy:hover,
.page-contact .pc-copy:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.page-contact .pc-copy[data-copied] {
  color: var(--jade-light);
  border-color: var(--jade);
}

.page-contact .pc-clock {
  padding: 18px 20px 20px;
  background: var(--paper-2);
  border-left: 3px solid var(--jade);
}

.page-contact .pc-clock__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-contact .pc-timeline {
  margin-top: 14px;
}

.page-contact .pc-timeline__track {
  position: relative;
  height: 12px;
  background: rgba(91, 100, 112, .20);
  overflow: hidden;
}

.page-contact .pc-timeline__active {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  background: linear-gradient(90deg, var(--gold-dark) 0%, var(--gold) 45%, var(--gold-light) 100%);
  transition: filter .16s ease;
}

.page-contact .pc-timeline__track:hover .pc-timeline__active {
  filter: brightness(1.12);
}

.page-contact .pc-timeline__marks {
  display: flex;
  justify-content: space-between;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: .62rem;
  letter-spacing: .03em;
  color: var(--stone);
}

.page-contact .pc-clock__note {
  margin: 14px 0 0;
  font-size: .84rem;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 右侧内容流 ---------- */
.page-contact .pc-flow {
  display: grid;
  gap: clamp(42px, 6vw, 68px);
  min-width: 0;
}

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

.page-contact .pc-block__eyebrow {
  margin: 0 0 .8em;
  color: var(--gold-dark);
}

.page-contact .pc-block__title {
  margin: 0 0 .55em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 3.6vw, 1.95rem);
  line-height: 1.32;
  color: var(--ink);
}

.page-contact .pc-block__lead {
  margin: 0 0 1.6em;
  max-width: 40em;
  font-size: .98rem;
  line-height: 1.9;
  color: var(--stone);
}

/* ---------- 三条渠道 ---------- */
.page-contact .pc-channels {
  display: grid;
  gap: 14px;
}

.page-contact .pc-channel {
  padding: 22px 22px 24px;
  background: var(--paper-2);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  box-shadow: 0 1px 0 var(--pc-hair-soft);
}

.page-contact .pc-channel__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--gold-dark);
  background: rgba(201, 162, 39, .12);
  border-left: 2px solid var(--gold);
}

.page-contact .pc-channel__name {
  margin: 16px 0 .6em;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .pc-channel__text {
  margin: 0 0 1.1em;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--stone);
}

.page-contact .pc-channel__addr {
  margin: 0;
  font-size: .84rem;
  line-height: 1.6;
  color: var(--gold-dark);
  overflow-wrap: anywhere;
}

.page-contact .pc-channel__addr a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid var(--jade-light);
}

.page-contact .pc-channel__addr a:hover {
  color: var(--gold-dark);
  border-bottom-color: var(--gold);
}

/* ---------- 邮件写法 ---------- */
.page-contact .pc-mail__grid {
  display: grid;
  gap: 20px;
}

.page-contact .pc-code {
  overflow: hidden;
  background: var(--ink-2);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-contact .pc-code__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(201, 162, 39, .22);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--gold-light);
}

.page-contact .pc-code__head .copy-btn {
  padding: 5px 13px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--gold-light);
  background: transparent;
  border: 1px solid var(--line);
  transition: background-color .16s ease, color .16s ease, border-color .16s ease;
}

.page-contact .pc-code__head .copy-btn:hover,
.page-contact .pc-code__head .copy-btn:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.page-contact .pc-code__head .copy-btn[data-copied] {
  color: var(--jade-light);
  border-color: var(--jade);
}

.page-contact .pc-code__body {
  margin: 0;
  padding: 18px;
  font-family: var(--font-mono);
  font-size: .8rem;
  line-height: 2;
  color: rgba(245, 241, 231, .84);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

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

.page-contact .pc-tips {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .pc-tips li {
  position: relative;
  padding-left: 20px;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--stone);
}

.page-contact .pc-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 2px;
  background: var(--gold);
}

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

/* ---------- 受理范围 ---------- */
.page-contact .pc-scope {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-scope li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 18px 0;
  border-bottom: 1px solid var(--pc-hair-soft);
}

.page-contact .pc-scope__no {
  font-size: .92rem;
  font-weight: 700;
  color: var(--gold-dark);
  letter-spacing: .04em;
}

.page-contact .pc-scope__txt {
  font-size: .96rem;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .pc-scope__note {
  margin: 20px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--jade);
  font-size: .93rem;
  line-height: 1.9;
  color: var(--stone);
}

/* ---------- 高频情形（折叠） ---------- */
.page-contact .pc-faq {
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-faq__item {
  border-bottom: 1px solid var(--pc-hair-soft);
}

.page-contact .pc-faq__item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.6;
  color: var(--ink);
  transition: color .16s ease;
}

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

.page-contact .pc-faq__item summary:hover {
  color: var(--gold-dark);
}

.page-contact .pc-faq__idx {
  flex: none;
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--gold);
}

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

.page-contact .pc-faq__chevron {
  flex: none;
  margin-left: auto;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--jade);
  transition: transform .2s ease;
}

.page-contact .pc-faq__item[open] .pc-faq__chevron {
  transform: rotate(90deg);
}

.page-contact .pc-faq__body {
  padding: 0 0 20px 30px;
  font-size: .93rem;
  line-height: 1.9;
  color: var(--stone);
}

.page-contact .pc-faq__body p {
  margin: 0 0 .6em;
}

.page-contact .pc-faq__body p:last-child {
  margin-bottom: 0;
}

.page-contact .pc-faq__body a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid var(--jade-light);
}

.page-contact .pc-faq__body a:hover {
  color: var(--gold-dark);
  border-bottom-color: var(--gold);
}

/* ---------- 站点信息 ---------- */
.page-contact .pc-facts {
  margin: 0;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .pc-facts__row {
  display: grid;
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--pc-hair-soft);
}

.page-contact .pc-facts__key {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--stone);
}

.page-contact .pc-facts__val {
  margin: 0;
  font-size: .96rem;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .pc-facts__close {
  margin: 22px 0 0;
  font-size: .93rem;
  line-height: 1.95;
  color: var(--stone);
}

.page-contact .pc-facts__close a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid var(--jade-light);
}

.page-contact .pc-facts__close a:hover {
  color: var(--gold-dark);
  border-bottom-color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .pc-facts__row {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

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

  .page-contact .pc-tips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 26px;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .82fr);
    align-items: center;
    gap: 56px;
  }

  .page-contact .pc-mail__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
    gap: 24px;
  }
}

@media (min-width: 980px) {
  .page-contact .pc-split {
    grid-template-columns: var(--pc-rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .pc-sticky {
    position: sticky;
    top: 104px;
  }
}

@media (min-width: 1180px) {
  .page-contact .pc-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-copy,
  .page-contact .pc-code__head .copy-btn,
  .page-contact .pc-faq__chevron,
  .page-contact .pc-timeline__active {
    transition: none;
  }
}