.page-contact {
  --pc-band-deep: linear-gradient(180deg, var(--ar-ink-900) 0%, var(--ar-ink-800) 44%, var(--ar-ink-900) 100%);
  --pc-door-bg: linear-gradient(175deg, rgba(22, 47, 74, 0.92), rgba(13, 29, 48, 0.96));
  --pc-plate-bg: linear-gradient(150deg, rgba(42, 74, 103, 0.34), rgba(7, 17, 28, 0.88));
  background: var(--pc-band-deep);
  color: var(--ar-fog);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: hidden;
}

.page-contact img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-contact a:focus-visible {
  outline: 2px solid var(--ar-gold-500);
  outline-offset: 3px;
}

.page-contact .pc-mono {
  font-family: var(--ar-font-mono);
  letter-spacing: 0.07em;
}

.pc-crumb {
  padding-top: clamp(18px, 4vw, 30px);
}

/* ---------- 首屏门厅 ---------- */
.pc-gate {
  position: relative;
  background:
    radial-gradient(120% 90% at 78% 16%, rgba(42, 74, 103, 0.55), transparent 62%),
    radial-gradient(80% 70% at 10% 94%, rgba(181, 71, 54, 0.16), transparent 70%);
}

.pc-gate__grid {
  display: grid;
  gap: clamp(24px, 5vw, 44px);
  padding-block: clamp(26px, 6vw, 60px);
}

.pc-gate__copy h1 {
  margin: 12px 0 16px;
  font-family: var(--ar-font-serif);
  font-weight: 700;
  font-size: clamp(30px, 7.4vw, 52px);
  line-height: 1.22;
  letter-spacing: 0.02em;
  color: var(--ar-fog);
}

.pc-gate__meta {
  list-style: none;
  margin: 22px 0 0;
  padding: 16px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  border-top: 1px solid var(--ar-line-soft);
  font-size: 13px;
  color: var(--ar-celadon);
}

.pc-gate__meta .pc-mono {
  color: var(--ar-gold-200);
  font-size: 12px;
}

.pc-gate__figure {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--ar-line);
  background: linear-gradient(180deg, rgba(42, 74, 103, 0.45), rgba(7, 17, 28, 0.92));
  position: relative;
}

.pc-gate__figure::after {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(198, 161, 91, 0.18);
  pointer-events: none;
}

.pc-gate__figure img {
  width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(0.85);
}

/* ---------- 三扇门 ---------- */
.pc-doors {
  padding-block: clamp(34px, 7vw, 68px);
  background: linear-gradient(180deg, rgba(13, 29, 48, 0.92), rgba(7, 17, 28, 1));
  border-top: 1px solid var(--ar-line-soft);
  border-bottom: 1px solid var(--ar-line-soft);
}

.pc-doors__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 4vw, 32px);
}

.pc-door {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--pc-door-bg);
  border: 1px solid var(--ar-line-soft);
  border-top: 2px solid var(--ar-gold-500);
  border-radius: var(--ar-radius);
  transition: transform 0.25s var(--ar-ease), border-color 0.25s var(--ar-ease), box-shadow 0.25s var(--ar-ease);
}

.pc-door:hover,
.pc-door:focus-within {
  transform: translateY(-2px);
  border-color: var(--ar-gold-500);
  box-shadow: 0 20px 42px -26px rgba(198, 161, 91, 0.6);
}

.pc-door__title {
  margin: 0;
  font-family: var(--ar-font-serif);
  font-weight: 600;
  font-size: 22px;
  color: var(--ar-fog);
}

.pc-door__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ar-celadon);
}

.pc-door__list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
  font-size: 14px;
  color: var(--ar-fog);
}

.pc-door__list li {
  position: relative;
  padding-left: 16px;
  line-height: 1.6;
}

.pc-door__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 5px;
  height: 5px;
  background: var(--ar-vermillion);
}

.pc-door__foot {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--ar-line-soft);
  font-size: 12px;
  color: var(--ar-gold-200);
  word-break: break-all;
}

.pc-door .ar-btn {
  align-self: flex-start;
}

/* ---------- 主体：索引 + 内容 ---------- */
.pc-body {
  display: grid;
  gap: 28px;
  padding-block: clamp(32px, 6vw, 64px);
}

.pc-rail {
  display: flex;
  flex-direction: row;
  gap: 6px;
  overflow-x: auto;
  padding: 0 0 10px;
  border-bottom: 1px solid var(--ar-line-soft);
  white-space: nowrap;
}

.pc-rail__title {
  margin: 0;
  align-self: center;
  font-family: var(--ar-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ar-sand);
  padding-right: 8px;
}

.page-contact .pc-rail .ar-index-rail__link {
  display: inline-block;
  padding: 6px 10px;
  font-size: 13px;
  color: var(--ar-celadon);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s var(--ar-ease), border-color 0.2s var(--ar-ease);
}

.page-contact .pc-rail .ar-index-rail__link:hover,
.page-contact .pc-rail .ar-index-rail__link:focus-visible {
  color: var(--ar-gold-200);
  border-color: var(--ar-line);
}

.pc-section {
  scroll-margin-top: calc(var(--ar-header-h) + 24px);
}

.pc-section + .pc-section {
  margin-top: clamp(36px, 6vw, 62px);
}

/* ---------- 邮箱与电话 ---------- */
.pc-plates {
  display: grid;
  gap: 16px;
  margin-top: clamp(18px, 3vw, 26px);
}

.pc-plate {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  background: var(--pc-plate-bg);
  border: 1px solid var(--ar-line);
  border-radius: var(--ar-radius);
}

.pc-plate::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(198, 161, 91, 0.16);
  pointer-events: none;
}

.pc-plate__label {
  margin: 0 0 10px;
  font-family: var(--ar-font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ar-sand);
}

.pc-plate__value {
  margin: 0 0 12px;
  font-size: clamp(15px, 2.6vw, 19px);
  line-height: 1.45;
  color: var(--ar-gold-200);
  word-break: break-all;
  user-select: all;
}

.pc-plate__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ar-celadon);
}

.pc-desk__figure {
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 8px;
  border: 1px solid var(--ar-line-soft);
  background: rgba(7, 17, 28, 0.6);
}

.pc-desk__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.pc-desk__figure figcaption {
  display: block;
  padding: 10px 4px 2px;
  font-size: 13px;
  color: var(--ar-celadon);
}

/* ---------- 帮助中心表单 ---------- */
.pc-assist {
  display: grid;
  gap: 20px;
  margin-top: clamp(18px, 3vw, 26px);
}

.pc-assist__text p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ar-fog);
}

.pc-assist__list {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.pc-assist__list li {
  display: grid;
  gap: 3px;
  padding: 11px 0;
  border-top: 1px solid var(--ar-line-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ar-celadon);
}

.pc-assist__list .pc-mono {
  font-size: 12px;
  color: var(--ar-gold-200);
}

.pc-assist__tip {
  margin: 0;
  font-size: 13px;
  color: var(--ar-sand);
}

.pc-assist__entry {
  display: grid;
  gap: 10px;
  justify-items: start;
  padding: clamp(20px, 3vw, 26px);
  background: linear-gradient(160deg, rgba(198, 161, 91, 0.14), rgba(7, 17, 28, 0.92));
  border: 1px solid var(--ar-line);
  border-radius: var(--ar-radius);
}

.pc-assist__entrytitle {
  margin: 0;
  font-family: var(--ar-font-serif);
  font-weight: 600;
  font-size: 20px;
  color: var(--ar-fog);
}

.pc-assist__entrytext {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ar-celadon);
}

/* ---------- 协作咨询 ---------- */
.pc-collab {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 26px);
}

/* ---------- 地址 ---------- */
.pc-address__band {
  display: inline-block;
  padding: 10px 18px;
  background: var(--ar-sand);
  color: var(--ar-ink-900);
}

.pc-address__band h2 {
  margin: 0;
  font-family: var(--ar-font-serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.05em;
}

.pc-address__body {
  display: grid;
  gap: 10px;
  padding-top: 18px;
}

.pc-address__line {
  margin: 0;
  font-size: clamp(14px, 2.4vw, 18px);
  line-height: 1.65;
  color: var(--ar-fog);
  word-break: break-word;
}

.pc-address__body p {
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ar-celadon);
}

/* ---------- 响应时间 ---------- */
.pc-response {
  margin-top: clamp(18px, 3vw, 26px);
  border-top: 1px solid var(--ar-line-soft);
}

.pc-response__row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ar-line-soft);
}

.pc-response__row > .pc-mono {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ar-sand);
}

.pc-response__num {
  font-family: var(--ar-font-serif);
  font-weight: 600;
  font-size: clamp(22px, 4vw, 26px);
  color: var(--ar-gold-200);
}

.pc-response__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ar-celadon);
}

.pc-response__foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ar-celadon);
  max-width: 62ch;
}

.pc-response__foot a {
  color: var(--ar-gold-200);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 相关入口 ---------- */
.pc-next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(30px, 5vw, 52px);
  padding-top: 18px;
  border-top: 1px solid var(--ar-line);
}

.pc-next a {
  padding: 8px 14px;
  border: 1px solid var(--ar-line-soft);
  font-family: var(--ar-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ar-celadon);
  text-decoration: none;
  transition: color 0.2s var(--ar-ease), border-color 0.2s var(--ar-ease);
}

.pc-next a:hover,
.pc-next a:focus-visible {
  color: var(--ar-gold-200);
  border-color: var(--ar-gold-500);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .pc-plates {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .pc-response__row {
    grid-template-columns: 150px 140px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 860px) {
  .pc-gate__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .pc-doors__grid {
    grid-template-columns: 1.45fr 1fr 1fr;
    align-items: start;
  }

  .pc-door:nth-child(2) {
    margin-top: 28px;
  }

  .pc-door:nth-child(3) {
    margin-top: 14px;
  }

  .pc-assist {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .pc-body {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 56px);
    align-items: start;
  }

  .pc-rail {
    position: sticky;
    top: calc(var(--ar-header-h) + 20px);
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0 0 0 14px;
    border-bottom: 0;
    border-left: 1px solid var(--ar-line-soft);
    white-space: normal;
  }

  .pc-rail__title {
    padding: 0 0 8px;
    align-self: flex-start;
  }

  .page-contact .pc-rail .ar-index-rail__link {
    display: block;
    padding: 7px 12px;
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -15px;
  }

  .page-contact .pc-rail .ar-index-rail__link:hover,
  .page-contact .pc-rail .ar-index-rail__link:focus-visible {
    border-left-color: var(--ar-vermillion);
    color: var(--ar-gold-200);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-door,
  .page-contact .pc-next a {
    transition: none;
  }

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