.page-contact {
  --pc-dark-line: rgba(200, 212, 222, 0.18);
  --pc-dark-line-strong: rgba(200, 212, 222, 0.34);
  --pc-paper-line: rgba(11, 27, 43, 0.14);
  --pc-ink-soft: rgba(11, 27, 43, 0.7);
  --pc-card-accent: var(--neon-cyan);
  background: var(--night-deep-blue);
  color: var(--chalk-white);
  overflow-x: hidden;
}

.page-contact .crumbs {
  padding: 20px 0 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 0 64px;
  background: linear-gradient(180deg, var(--night-deep-blue) 0%, var(--stadium-navy) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -30%;
  width: 82%;
  height: 134%;
  background: var(--stadium-navy);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  opacity: 0.9;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: -4%;
  right: -4%;
  top: 56%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan) 24%, var(--neon-cyan) 76%, transparent);
  transform: rotate(-3.4deg);
  transform-origin: left center;
  opacity: 0.5;
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-contact .contact-hero__title {
  margin: 12px 0 0;
  max-width: 16ch;
}

.page-contact .contact-hero__lede {
  margin: 20px 0 0;
  max-width: 56ch;
  color: var(--cyan-tint);
}

.page-contact .quick-lines {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-top: 1px solid var(--pc-dark-line);
}

.page-contact .quick-lines__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pc-dark-line);
}

.page-contact .quick-lines__key {
  flex: 0 0 96px;
  font-size: var(--step-0);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cyan-tint);
}

.page-contact .quick-lines__value {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.02em;
  color: var(--chalk-white);
  overflow-wrap: anywhere;
  user-select: all;
}

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

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pc-dark-line-strong);
  object-fit: cover;
}

/* ---------- 通用区块 ---------- */
.page-contact .contact-band {
  padding: 56px 0;
}

.page-contact .contact-band--paper {
  background: var(--court-paper);
  color: var(--night-deep-blue);
}

.page-contact .contact-band--navy {
  background: var(--stadium-navy);
  color: var(--chalk-white);
}

.page-contact .contact-band--dark {
  background: var(--night-deep-blue);
  color: var(--chalk-white);
}

.page-contact .contact-band--paper .eyebrow {
  color: var(--track-orange);
}

.page-contact .contact-band--paper .lede {
  color: var(--pc-ink-soft);
}

.page-contact .contact-head {
  display: grid;
  gap: 16px;
  padding-bottom: 28px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--pc-paper-line);
}

.page-contact .contact-head--dark {
  border-bottom-color: var(--pc-dark-line);
}

.page-contact .contact-head .h2 {
  margin: 8px 0 0;
}

.page-contact .contact-head__note {
  margin: 0;
  font-size: var(--step-0);
  color: var(--pc-ink-soft);
  max-width: 40ch;
}

.page-contact .contact-head--dark .contact-head__note {
  color: var(--cyan-tint);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 22px;
  background: var(--chalk-white);
  border: 1px solid var(--pc-paper-line);
  border-top: 4px solid var(--pc-card-accent);
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-contact .channel-card--mail { --pc-card-accent: var(--neon-cyan); }
.page-contact .channel-card--phone { --pc-card-accent: var(--track-orange); }
.page-contact .channel-card--desk { --pc-card-accent: var(--scoreboard-yellow); }
.page-contact .channel-card--reply { --pc-card-accent: var(--stadium-navy); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 16px 30px rgba(11, 27, 43, 0.14);
}

.page-contact .channel-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pc-ink-soft);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--night-deep-blue);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.02em;
  color: var(--night-deep-blue);
  overflow-wrap: anywhere;
  user-select: all;
}

.page-contact .channel-card__value--text {
  font-family: var(--font-body);
  font-size: var(--step-1);
  line-height: 1.6;
}

.page-contact .channel-card__fits {
  margin: 4px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--pc-paper-line);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--pc-ink-soft);
}

/* ---------- 苹果端 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pc-dark-line);
}

.page-contact .step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--pc-dark-line);
}

.page-contact .step__num {
  font-family: var(--font-mono);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--neon-cyan);
  letter-spacing: 0.02em;
}

.page-contact .step__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--chalk-white);
}

.page-contact .step__text {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--cyan-tint);
  max-width: 62ch;
}

.page-contact .ios-note {
  margin-top: 32px;
  padding: 24px 22px;
  background: rgba(34, 224, 200, 0.07);
  border-left: 4px solid var(--neon-cyan);
}

.page-contact .ios-note__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--chalk-white);
}

.page-contact .ios-note__text {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--cyan-tint);
  max-width: 68ch;
}

/* ---------- 提交前自查 ---------- */
.page-contact .prep-layout {
  display: grid;
  gap: 36px;
}

.page-contact .prep-intro .h2 {
  margin: 8px 0 0;
}

.page-contact .prep-intro__lede {
  margin: 16px 0 0;
  max-width: 48ch;
}

.page-contact .prep-intro__tip {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--line-mist);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--pc-ink-soft);
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pc-paper-line);
}

.page-contact .prep-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--pc-paper-line);
  cursor: pointer;
}

.page-contact .prep-item__box {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  accent-color: var(--neon-cyan);
}

.page-contact .prep-item__body {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
}

.page-contact .prep-item__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--track-orange);
}

.page-contact .prep-item__text {
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--night-deep-blue);
}

.page-contact .prep-item__box:checked ~ .prep-item__body .prep-item__text {
  color: var(--pc-ink-soft);
}

/* ---------- 合作通道 ---------- */
.page-contact .partner-layout {
  display: grid;
  gap: 32px;
}

.page-contact .partner-copy .h2 {
  margin: 8px 0 0;
  max-width: 22ch;
}

.page-contact .partner-copy__text {
  margin: 18px 0 0;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--cyan-tint);
  max-width: 62ch;
}

.page-contact .partner-aside {
  padding: 26px 22px;
  border: 1px solid var(--pc-dark-line-strong);
  border-top: 4px solid var(--track-orange);
  background: rgba(255, 106, 43, 0.05);
}

.page-contact .partner-aside__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--chalk-white);
}

.page-contact .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .partner-list__item {
  position: relative;
  padding: 12px 0 12px 18px;
  border-bottom: 1px solid var(--pc-dark-line);
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--cyan-tint);
}

.page-contact .partner-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 6px;
  height: 6px;
  background: var(--track-orange);
}

.page-contact .partner-aside__foot {
  margin: 16px 0 0;
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--chalk-white);
}

/* ---------- 回复节奏 ---------- */
.page-contact .reply-layout {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-contact .reply-media {
  margin: 0;
}

.page-contact .reply-media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--pc-dark-line-strong);
  object-fit: cover;
}

.page-contact .reply-copy .h2 {
  margin: 8px 0 0;
  max-width: 20ch;
}

.page-contact .reply-copy__text {
  margin: 18px 0 0;
  font-size: var(--step-1);
  line-height: 1.8;
  color: var(--cyan-tint);
  max-width: 60ch;
}

.page-contact .reply-facts {
  margin: 28px 0 0;
  border-top: 1px solid var(--pc-dark-line);
}

.page-contact .reply-facts__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--pc-dark-line);
}

.page-contact .reply-facts__key {
  flex: 0 0 108px;
  font-size: var(--step-0);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--scoreboard-yellow);
}

.page-contact .reply-facts__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-0);
  letter-spacing: 0.02em;
  color: var(--chalk-white);
}

/* ---------- 顺路看看 ---------- */
.page-contact .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .next-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px;
  text-decoration: none;
  background: var(--chalk-white);
  border: 1px solid var(--pc-paper-line);
  border-left: 4px solid var(--pc-card-accent);
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-contact .next-card:hover,
.page-contact .next-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 16px 30px rgba(11, 27, 43, 0.14);
}

.page-contact .next-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pc-ink-soft);
}

.page-contact .next-card__title {
  font-family: var(--font-display);
  font-size: var(--step-2);
  font-weight: 700;
  color: var(--night-deep-blue);
}

.page-contact .next-card__text {
  font-size: var(--step-0);
  line-height: 1.7;
  color: var(--pc-ink-soft);
}

.page-contact .next-card__go {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: var(--step-0);
  letter-spacing: 0.06em;
  color: var(--track-orange);
}

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

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

@media (min-width: 900px) {
  .page-contact .crumbs {
    padding: 26px 0 0;
  }

  .page-contact .contact-hero {
    padding: 48px 0 96px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 64px;
  }

  .page-contact .contact-band {
    padding: 96px 0;
  }

  .page-contact .contact-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: end;
    gap: 32px;
  }

  .page-contact .contact-head__note {
    text-align: right;
    justify-self: end;
  }

  .page-contact .prep-layout {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 64px;
    align-items: start;
  }

  .page-contact .partner-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .reply-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 56px;
  }

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

@media (min-width: 1180px) {
  .page-contact .channel-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within,
  .page-contact .next-card:hover,
  .page-contact .next-card:focus-visible {
    transform: none;
  }
}