.page-contact {
  --contact-accent: #35F2C0;
  --contact-warm: #FF7A2F;
  --contact-laterite: #A8452A;
  padding-bottom: var(--sp-5);
}

.page-contact .breadcrumb {
  margin: var(--sp-4) 0 var(--sp-3);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  text-transform: uppercase;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: var(--sp-4) 0 var(--sp-5);
  border-left: 6px solid var(--orange);
  padding-left: var(--sp-3);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: -20px -20px auto auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(53, 242, 192, 0.18), transparent 68%);
  pointer-events: none;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-title);
  font-weight: 800;
  font-stretch: 90%;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: #fff;
  margin: var(--sp-2) 0 var(--sp-3);
  max-width: 20ch;
}

.page-contact .contact-hero .lede {
  max-width: 62ch;
  color: var(--body-ink);
  font-size: 16px;
  line-height: 1.85;
}

.page-contact .hero-keys {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-1);
  border-top: 1px solid var(--hair);
  padding-top: var(--sp-3);
}

.page-contact .hero-keys li {
  display: flex;
  gap: var(--sp-2);
  align-items: baseline;
  font-size: 14px;
  color: var(--mist);
}

.page-contact .hero-keys .mono {
  color: var(--contact-warm);
  font-size: 12px;
  letter-spacing: 0.1em;
}

/* ---------- 渠道区 ---------- */
.page-contact .channel-line {
  height: 1px;
  background: linear-gradient(90deg, var(--contact-laterite), var(--contact-accent) 55%, transparent);
  margin-bottom: calc(var(--sp-4) * -1 + 6px);
  transform: translateY(-26px);
}

.page-contact .channel-grid {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: 1fr;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-3);
  border: 1px solid var(--hair);
  background:
    linear-gradient(160deg, rgba(27, 39, 82, 0.9), rgba(14, 22, 51, 0.94));
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 6px;
  border-radius: 0 0 8px 0;
  background: var(--contact-accent);
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease);
}

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

.page-contact .channel-card:hover::before,
.page-contact .channel-card:focus-within::before {
  opacity: 1;
}

.page-contact .channel-card__glyph {
  color: var(--contact-accent);
  line-height: 0;
}

.page-contact .channel-card__title {
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
  margin: 0;
}

.page-contact .channel-card__value {
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
  color: #fff;
  letter-spacing: 0.02em;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-contact .channel-card__value--addr {
  font-family: var(--font-title);
  font-size: 16px;
  color: var(--contact-accent);
  letter-spacing: 0;
  font-weight: 600;
}

.page-contact .channel-card__use {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--body-ink);
}

.page-contact .channel-card__foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  margin-top: auto;
  padding-top: var(--sp-2);
  border-top: 1px dashed var(--hair);
}

/* ---------- 复制条 ---------- */
.page-contact .copy-strip {
  margin-top: var(--sp-4);
  padding: var(--sp-3);
  border-radius: var(--r-soft);
  border: 1px solid var(--hair);
  background: rgba(7, 12, 31, 0.6);
  display: grid;
  gap: var(--sp-2);
}

.page-contact .copy-strip__lead {
  margin: 0;
  font-size: 13px;
  color: var(--mist);
}

.page-contact .copy-strip__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--sp-2);
  padding: var(--sp-1) 0;
  border-bottom: 1px solid var(--grid-line);
}

.page-contact .copy-strip__row:last-child {
  border-bottom: 0;
}

.page-contact .copy-strip__label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--contact-warm);
  min-width: 56px;
}

.page-contact .copy-strip__text {
  font-size: 15px;
  color: #fff;
  letter-spacing: 0.03em;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

/* ---------- 回复时段 ---------- */
.page-contact .timing {
  padding-top: var(--sp-5);
}

.page-contact .timing .lede {
  max-width: 64ch;
  color: var(--body-ink);
}

.page-contact .timing p {
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--body-ink);
}

.page-contact .section-head--stack {
  display: block;
  margin-bottom: var(--sp-3);
}

.page-contact .timeline {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0 0 0 var(--sp-3);
  border-left: 1px solid var(--hair-strong);
}

.page-contact .timeline__item {
  position: relative;
  padding: 0 0 var(--sp-4) var(--sp-3);
}

.page-contact .timeline__item:last-child {
  padding-bottom: 0;
}

.page-contact .timeline__dot {
  position: absolute;
  left: calc(var(--sp-3) * -1 - 5px);
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 2px solid var(--contact-accent);
}

.page-contact .timeline__dot--warm {
  border-color: var(--contact-warm);
}

.page-contact .timeline__time {
  display: block;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--contact-accent);
  margin-bottom: 4px;
}

.page-contact .timeline__body h3 {
  margin: 0 0 4px;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.page-contact .timeline__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 56ch;
}

.page-contact .timing__hint {
  margin-top: var(--sp-4);
  padding: var(--sp-3);
  border-radius: var(--r-soft);
  border-left: 4px solid var(--contact-warm);
  background: rgba(255, 122, 47, 0.07);
  color: var(--body-ink);
  max-width: 64ch;
}

.page-contact .timing__aside {
  margin-top: var(--sp-4);
}

.page-contact .aside-card {
  padding: var(--sp-3);
  border: 1px solid var(--hair);
  background: rgba(27, 39, 82, 0.72);
}

.page-contact .aside-card__title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.page-contact .aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--sp-1);
}

.page-contact .aside-list li {
  display: flex;
  gap: var(--sp-2);
  font-size: 14px;
  line-height: 1.7;
  color: var(--body-ink);
}

.page-contact .aside-list .mono {
  color: var(--contact-accent);
  font-size: 12px;
  letter-spacing: 0.1em;
  min-width: 14px;
}

.page-contact .aside-note {
  margin: var(--sp-3) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 寄送函件 ---------- */
.page-contact .post {
  padding-top: var(--sp-5);
}

.page-contact .post-grid {
  display: grid;
  gap: var(--sp-4);
  grid-template-columns: 1fr;
}

.page-contact .post-copy p {
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.88;
  color: var(--body-ink);
}

.page-contact .post-steps {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--sp-3);
}

.page-contact .post-steps li {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
}

.page-contact .post-steps__idx {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--contact-accent);
  border: 1px solid var(--hair-strong);
  background: rgba(18, 119, 95, 0.18);
}

.page-contact .post-steps h3 {
  margin: 4px 0 4px;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: #fff;
}

.page-contact .post-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 52ch;
}

.page-contact .post-note {
  margin-top: var(--sp-4);
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
  padding-left: var(--sp-3);
  border-left: 2px solid var(--hair-strong);
}

.page-contact .post-media {
  border-radius: var(--r-card);
  overflow: hidden;
}

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

/* ---------- 合作与纠错 ---------- */
.page-contact .topics {
  padding-top: var(--sp-5);
}

.page-contact .topic-grid {
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: 1fr;
}

.page-contact .topic-card {
  position: relative;
  padding: var(--sp-3);
  border: 1px solid var(--hair);
  background: linear-gradient(200deg, rgba(27, 39, 82, 0.85), rgba(14, 22, 51, 0.95));
  transition: border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-contact .topic-card:hover {
  border-color: var(--contact-warm);
  transform: translateY(-2px);
}

.page-contact .topic-card__idx {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--contact-warm);
  margin-bottom: var(--sp-1);
}

.page-contact .topic-card h3 {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-title);
  font-size: 19px;
  font-weight: 700;
  color: #fff;
}

.page-contact .topic-card__scene {
  margin: 0 0 var(--sp-2);
  font-size: 14px;
  line-height: 1.8;
  color: var(--body-ink);
}

.page-contact .topic-card__points {
  list-style: none;
  margin: 0 0 var(--sp-3);
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-contact .topic-card__points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .topic-card__points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--contact-accent);
  transform: rotate(45deg);
}

.page-contact .topic-card__mail {
  margin: 0;
  padding-top: var(--sp-2);
  border-top: 1px dashed var(--hair);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--contact-accent);
  word-break: break-word;
}

.page-contact .tpl-fold {
  margin-top: var(--sp-4);
  border: 1px solid var(--hair);
  border-radius: var(--r-soft);
  background: rgba(7, 12, 31, 0.62);
  padding: var(--sp-3);
}

.page-contact .tpl-fold summary {
  cursor: pointer;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: var(--contact-warm);
}

.page-contact .tpl-fold__line {
  margin: var(--sp-2) 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--body-ink);
  padding-left: var(--sp-2);
  border-left: 2px solid var(--hair-strong);
  word-break: break-word;
}

.page-contact .tpl-fold__note {
  margin: var(--sp-3) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 地域与备案 ---------- */
.page-contact .region {
  padding-top: var(--sp-5);
}

.page-contact .region-band {
  position: relative;
  border-radius: var(--r-card);
  overflow: hidden;
  background: linear-gradient(115deg, var(--contact-laterite) 0%, #6d2f1d 42%, var(--ink) 100%);
}

.page-contact .region-band::after {
  content: "";
  position: absolute;
  top: -30px;
  right: -60px;
  width: 260px;
  height: 200px;
  background: rgba(53, 242, 192, 0.12);
  transform: rotate(-7deg);
  clip-path: polygon(0 0, 100% 12%, 100% 100%, 0 84%);
  pointer-events: none;
}

.page-contact .region-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--sp-3);
  grid-template-columns: 1fr;
  padding: var(--sp-4) var(--sp-3);
}

.page-contact .region-copy p {
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.88;
  color: #f4ebdc;
}

.page-contact .region-copy .section-head__num {
  color: #ffd9b8;
}

.page-contact .region-copy .section-head__title {
  color: #fff;
  margin-bottom: var(--sp-2);
  display: block;
}

.page-contact .region-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--sp-2);
  margin-top: var(--sp-3);
  padding-top: var(--sp-2);
  border-top: 1px solid rgba(244, 235, 220, 0.28);
}

.page-contact .region-meta__key {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: #ffd9b8;
}

.page-contact .region-meta__val {
  font-size: 15px;
  letter-spacing: 0.04em;
  color: #fff;
}

.page-contact .region-links {
  margin-top: var(--sp-2);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 235, 220, 0.86);
}

.page-contact .region-links .link-ink {
  color: var(--contact-accent);
}

.page-contact .region-media {
  border-radius: var(--r-soft);
  overflow: hidden;
}

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

/* ---------- 底部导航 ---------- */
.page-contact .contact-footnav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--hair);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-contact .topic-card:last-child {
    grid-column: span 2;
  }

  .page-contact .hero-keys {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--sp-3);
  }
}

@media (min-width: 980px) {
  .page-contact .contact-hero {
    padding-left: var(--sp-4);
    border-left-width: 8px;
  }

  .page-contact .post-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: var(--sp-5);
  }

  .page-contact .post-media {
    position: sticky;
    top: 96px;
  }

  .page-contact .region-inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
    gap: var(--sp-5);
    padding: var(--sp-5) var(--sp-4);
  }

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

  .page-contact .topic-card:last-child {
    grid-column: auto;
  }

  .page-contact .copy-strip {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--sp-4);
  }

  .page-contact .copy-strip__row {
    border-bottom: 0;
    border-left: 1px solid var(--grid-line);
    padding-left: var(--sp-3);
  }

  .page-contact .timeline {
    margin-top: var(--sp-5);
  }
}

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

  .page-contact .channel-card:hover,
  .page-contact .topic-card:hover {
    transform: none;
  }
}