.page-contact {
  --pc-card-bg: linear-gradient(160deg, rgba(14, 58, 92, .92), rgba(10, 37, 64, .97));
  --pc-line-soft: rgba(127, 231, 255, .22);
  background: var(--by-deep-sea);
  color: var(--by-pearl);
  padding-bottom: clamp(56px, 8vw, 96px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-contact__crumbs {
  padding-top: 22px;
}
.page-contact__crumb-list {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--by-electric-soft);
}
.page-contact__crumb-list a {
  color: var(--by-pearl);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.page-contact__crumb-list a:hover,
.page-contact__crumb-list a:focus-visible {
  color: var(--by-electric);
  border-bottom-color: var(--by-electric);
}
.page-contact__crumb-list .by-crumb__sep {
  color: rgba(217, 226, 236, .45);
}

/* ---------- 首屏 ---------- */
.page-contact__hero {
  position: relative;
  margin-top: 18px;
  background: var(--by-grad-panel);
  border-top: 2px solid var(--by-line);
  border-bottom: 2px solid var(--by-line);
  overflow: hidden;
}
.page-contact__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--by-grad-wake);
  pointer-events: none;
}
.page-contact__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, .07) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(120% 90% at 78% 18%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 90% at 78% 18%, #000 0%, transparent 72%);
  pointer-events: none;
}
.page-contact__hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  padding-top: clamp(34px, 5vw, 56px);
  padding-bottom: clamp(38px, 5vw, 64px);
}
.page-contact__hero-copy {
  min-width: 0;
}
.page-contact__title {
  margin: 14px 0 0;
  font-family: var(--by-font-head);
  font-weight: 800;
  font-size: clamp(32px, 7.2vw, 58px);
  line-height: 1.08;
  letter-spacing: .02em;
  color: var(--by-sand);
  text-wrap: balance;
}
.page-contact__lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.8;
  color: var(--by-pearl);
}
.page-contact__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}
.page-contact__hero-figure {
  margin: 0;
  border: 2px solid var(--by-line-strong);
  border-radius: var(--by-radius-l);
  overflow: hidden;
  background: var(--by-ink);
  box-shadow: var(--by-shadow-card);
}
.page-contact__hero-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

/* ---------- 主布局 ---------- */
.page-contact__layout {
  display: grid;
  gap: 32px;
  padding-top: clamp(40px, 6vw, 68px);
}
.page-contact__aside {
  min-width: 0;
}
.page-contact__main {
  min-width: 0;
  display: grid;
  gap: 28px;
}

/* ---------- 联系信息卡 ---------- */
.page-contact__card {
  display: grid;
  gap: 20px;
  padding: 24px 22px;
  border: 2px solid var(--by-line-strong);
  border-radius: var(--by-radius-m);
  background: var(--pc-card-bg);
  box-shadow: var(--by-shadow-card);
}
.page-contact__card-label {
  margin: 0;
  font-family: var(--by-font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--by-electric);
}
.page-contact__row {
  display: grid;
  gap: 7px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--pc-line-soft);
}
.page-contact__row:last-of-type {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact__key {
  font-size: 12px;
  letter-spacing: .1em;
  font-weight: 600;
  color: var(--by-electric-soft);
}
.page-contact__mail {
  font-family: var(--by-font-mono);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--by-sand);
  text-decoration: none;
  word-break: break-word;
  border-bottom: 2px solid var(--by-electric);
  padding-bottom: 2px;
  justify-self: start;
  transition: color .18s ease, border-color .18s ease;
}
.page-contact__mail:hover,
.page-contact__mail:focus-visible {
  color: var(--by-electric);
  border-bottom-color: var(--by-coral);
}
.page-contact__tel {
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--by-sand);
}
.page-contact__addr {
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--by-sand);
}
.page-contact__hint {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(217, 226, 236, .68);
}
.page-contact__card-btn {
  justify-self: start;
}

/* ---------- 内容块 ---------- */
.page-contact__block {
  padding: 24px 20px;
  border: 2px solid var(--pc-line-soft);
  border-radius: var(--by-radius-m);
  background: rgba(7, 19, 31, .42);
  scroll-margin-top: calc(var(--by-header-h) + 24px);
}
.page-contact__block-title {
  margin: 0 0 12px;
  font-family: var(--by-font-head);
  font-weight: 700;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.26;
  letter-spacing: .01em;
  color: var(--by-sand);
}
.page-contact__block-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--by-pearl);
}

/* ---------- 双通道 ---------- */
.page-contact__channels {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}
.page-contact__channel {
  padding: 18px 16px;
  border: 2px solid var(--pc-line-soft);
  border-radius: var(--by-radius-s);
  background: rgba(14, 58, 92, .5);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.page-contact__channel:hover,
.page-contact__channel:focus-within {
  transform: translateY(-4px);
  border-color: var(--by-line-strong);
  box-shadow: 6px 8px 0 rgba(7, 19, 31, .55);
}
.page-contact__channel-title {
  margin: 12px 0 8px;
  font-family: var(--by-font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: .01em;
  color: var(--by-sand);
}
.page-contact__channel-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--by-pearl);
}

/* ---------- 折叠说明 ---------- */
.page-contact__fold {
  margin-top: 20px;
  border: 2px solid var(--pc-line-soft);
  border-radius: var(--by-radius-s);
  background: rgba(14, 58, 92, .36);
  overflow: hidden;
}
.page-contact__fold summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--by-sand);
  transition: color .18s ease, background-color .18s ease;
}
.page-contact__fold summary::-webkit-details-marker {
  display: none;
}
.page-contact__fold summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--by-font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--by-coral);
}
.page-contact__fold[open] summary::after {
  content: "–";
}
.page-contact__fold summary:hover,
.page-contact__fold summary:focus-visible {
  color: var(--by-electric-soft);
  background: rgba(0, 212, 255, .06);
}
.page-contact__fold-body {
  padding: 0 18px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--by-pearl);
}
.page-contact__fold-body ul {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

/* ---------- 响应时间 ---------- */
.page-contact__timing {
  display: grid;
  gap: 24px;
  margin-top: 22px;
}
.page-contact__num {
  display: grid;
  gap: 2px;
  justify-items: center;
  padding: 24px 18px;
  text-align: center;
  border: 2px solid var(--by-coral);
  border-radius: var(--by-radius-m);
  background: linear-gradient(160deg, rgba(255, 107, 74, .17), rgba(255, 107, 74, .02));
  box-shadow: 6px 8px 0 rgba(7, 19, 31, .55);
}
.page-contact__num-value {
  font-family: var(--by-font-mono);
  font-size: clamp(46px, 10vw, 64px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--by-coral);
}
.page-contact__num-unit {
  font-size: 15px;
  font-weight: 600;
  color: var(--by-sand);
}
.page-contact__num-label {
  margin-top: 6px;
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--by-pearl);
}
.page-contact__facts {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
  align-content: center;
}
.page-contact__facts li {
  position: relative;
  padding-left: 22px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--by-pearl);
}
.page-contact__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--by-electric);
  box-shadow: 0 0 10px rgba(0, 212, 255, .7);
}

/* ---------- 地址地图 ---------- */
.page-contact__map {
  position: relative;
  margin-top: 22px;
  border: 2px solid var(--pc-line-soft);
  border-radius: var(--by-radius-m);
  overflow: hidden;
  background: var(--by-ink);
}
.page-contact__map-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 8;
  object-fit: cover;
}
.page-contact__pins {
  position: absolute;
  inset: 0;
}
.page-contact__pin {
  position: absolute;
  left: var(--x);
  top: var(--y);
  transform: translate(-50%, -50%);
  display: grid;
  justify-items: center;
  gap: 6px;
  padding: 8px;
}
.page-contact__pin i {
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--by-electric);
  box-shadow: 0 0 0 5px rgba(0, 212, 255, .16), 0 0 14px rgba(0, 212, 255, .9);
  animation: pc-pulse 2.8s ease-in-out infinite;
}
.page-contact__pin > span {
  font-size: 12px;
  line-height: 1;
  padding: 5px 10px;
  border-radius: 999px;
  white-space: nowrap;
  color: var(--by-sand);
  background: rgba(7, 19, 31, .88);
  border: 1px solid rgba(127, 231, 255, .34);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
.page-contact__pin:hover > span,
.page-contact__pin:focus-within > span {
  opacity: 1;
  transform: translateY(0);
}
@keyframes pc-pulse {
  0%, 100% {
    box-shadow: 0 0 0 5px rgba(0, 212, 255, .16), 0 0 14px rgba(0, 212, 255, .9);
  }
  50% {
    box-shadow: 0 0 0 11px rgba(0, 212, 255, .05), 0 0 22px rgba(0, 212, 255, 1);
  }
}

/* ---------- 咨询前准备 ---------- */
.page-contact__prep {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}
.page-contact__prep-item {
  position: relative;
  padding: 18px 16px 18px 68px;
  border: 2px solid var(--pc-line-soft);
  border-radius: var(--by-radius-s);
  background: rgba(14, 58, 92, .36);
}
.page-contact__prep-no {
  position: absolute;
  left: 16px;
  top: 18px;
  font-family: var(--by-font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--by-electric);
}
.page-contact__prep-title {
  margin: 0 0 8px;
  font-family: var(--by-font-head);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--by-sand);
}
.page-contact__prep-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--by-pearl);
}
.page-contact__note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--pc-line-soft);
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(217, 226, 236, .8);
}
.page-contact__note a {
  color: var(--by-electric-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 231, 255, .45);
  transition: color .18s ease, border-color .18s ease;
}
.page-contact__note a:hover,
.page-contact__note a:focus-visible {
  color: var(--by-coral);
  border-bottom-color: var(--by-coral);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact__block {
    padding: 30px 28px;
  }
  .page-contact__channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact__timing {
    grid-template-columns: minmax(180px, 230px) minmax(0, 1fr);
    align-items: center;
    gap: 30px;
  }
  .page-contact__prep {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact__prep-item {
    padding: 22px 18px;
  }
  .page-contact__prep-no {
    position: static;
    display: block;
    margin-bottom: 10px;
  }
}

@media (min-width: 900px) {
  .page-contact__hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 980px) {
  .page-contact__layout {
    grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }
  .page-contact__aside {
    position: sticky;
    top: calc(var(--by-header-h) + 22px);
  }
  .page-contact__main {
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact__pin i {
    animation: none;
  }
  .page-contact__channel,
  .page-contact__mail,
  .page-contact__pin > span,
  .page-contact__note a,
  .page-contact__fold summary {
    transition: none;
  }
  .page-contact__channel:hover,
  .page-contact__channel:focus-within {
    transform: none;
  }
}

.page-contact {
  --x: inherit;
  --y: inherit;
}