.page-contact {
  --pc-line: rgba(46, 74, 104, .9);
  --pc-line-soft: rgba(46, 74, 104, .55);
  --pc-pad: clamp(20px, 3.4vw, 40px);
  position: relative;
  padding-bottom: clamp(40px, 6vw, 84px);
  background:
    radial-gradient(120% 62% at 10% 0%, rgba(27, 58, 92, .58), transparent 62%),
    radial-gradient(90% 50% at 100% 100%, rgba(27, 58, 92, .34), transparent 66%),
    var(--xb-deep);
  color: var(--xb-snow);
}

.page-contact .xb-breadcrumb {
  padding: clamp(14px, 2.4vw, 24px) 0 clamp(8px, 1.4vw, 14px);
}

/* ---------- 框景首屏 ---------- */
.page-contact .contact-hero__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--xb-rule);
  border-radius: var(--xb-radius);
  background: linear-gradient(158deg, #0E2240 0%, #0A1A2E 58%, #12263F 100%);
  box-shadow: var(--xb-shadow);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .25;
  filter: saturate(.65) contrast(1.05);
  pointer-events: none;
}

.page-contact .contact-hero__scale {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 12px;
  z-index: 2;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, var(--xb-rule) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(90deg, var(--xb-orange) 0 2px, transparent 2px 132px);
  opacity: .85;
}

.page-contact .contact-hero__body {
  position: relative;
  z-index: 1;
  padding: clamp(34px, 6vw, 76px) var(--pc-pad) clamp(30px, 5vw, 62px);
  max-width: 900px;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-size: clamp(1.85rem, 5.1vw, 3.3rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--xb-snow);
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(245, 248, 251, .82);
}

.page-contact .contact-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 双栏联系卡 ---------- */
.page-contact .contact-channels {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(18px, 3vw, 32px);
  border: 1px solid var(--xb-rule);
  border-radius: var(--xb-radius);
  background: var(--xb-night);
  overflow: hidden;
}

.page-contact .contact-channels::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 2px;
  background: var(--xb-orange);
  transform: translateY(-1px);
  opacity: .9;
  z-index: 2;
  pointer-events: none;
}

.page-contact .contact-channel {
  position: relative;
  z-index: 1;
  padding: var(--pc-pad);
}

.page-contact .contact-channel + .contact-channel {
  border-top: 1px solid var(--pc-line-soft);
}

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

.page-contact .contact-channel__ix {
  font-family: var(--xb-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--xb-orange);
}

.page-contact .contact-channel__head .xb-h3 {
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 700;
  color: var(--xb-snow);
}

.page-contact .contact-channel__value {
  margin: 18px 0 0;
  font-size: clamp(1rem, 2.1vw, 1.32rem);
  color: var(--xb-green);
  letter-spacing: -.01em;
  overflow-wrap: anywhere;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .contact-channel__desc {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(245, 248, 251, .78);
}

.page-contact .contact-channel__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .contact-channel__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--xb-mist);
}

.page-contact .contact-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 1px;
  background: var(--xb-orange);
}

@media (min-width: 820px) {
  .page-contact .contact-channels {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .contact-channels::before {
    left: 50%;
    right: auto;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    transform: translateX(-1px);
  }

  .page-contact .contact-channel + .contact-channel {
    border-top: 0;
  }
}

/* ---------- 咨询准备清单 ---------- */
.page-contact .contact-prep {
  margin-top: clamp(14px, 2.4vw, 26px);
  align-items: start;
}

.page-contact .contact-prep__intro .xb-prose {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 248, 251, .78);
}

.page-contact .contact-prep__hint {
  margin: 18px 0 0;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--xb-mist);
  padding-top: 14px;
  border-top: 1px dashed var(--pc-line-soft);
}

.page-contact .contact-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  border: 1px solid var(--pc-line-soft);
  border-radius: var(--xb-radius);
  background: var(--pc-line-soft);
  overflow: hidden;
}

.page-contact .contact-checklist__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
  padding: 15px 18px;
  background: var(--xb-night);
  transition: background .22s ease, box-shadow .22s ease;
}

.page-contact .contact-checklist__item:hover {
  background: #16304D;
  box-shadow: inset 2px 0 0 var(--xb-orange);
}

.page-contact .contact-checklist__tick {
  font-family: var(--xb-font-mono);
  font-size: 12px;
  line-height: 1.85;
  letter-spacing: .05em;
  color: var(--xb-orange);
}

.page-contact .contact-checklist__text {
  font-size: 14.5px;
  line-height: 1.76;
  color: rgba(245, 248, 251, .82);
}

.page-contact .contact-checklist__text strong {
  color: var(--xb-snow);
  font-weight: 600;
}

.page-contact .contact-flow {
  margin: clamp(26px, 4vw, 46px) 0 0;
}

/* ---------- 合作与试用 ---------- */
.page-contact .contact-coop__lead {
  margin: clamp(14px, 2.4vw, 24px) 0 0;
  max-width: 68ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: rgba(245, 248, 251, .82);
}

.page-contact .contact-coop__grid {
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .contact-coop__grid > .xb-panel {
  padding: 22px 24px 24px;
  border-radius: var(--xb-radius);
  background: var(--xb-night);
  border: 1px solid var(--pc-line-soft);
  transition: border-color .22s ease, box-shadow .22s ease;
}

.page-contact .contact-coop__grid > .xb-panel:hover {
  border-color: rgba(255, 106, 31, .55);
  box-shadow: inset 2px 0 0 var(--xb-orange);
}

.page-contact .contact-coop__grid .xb-h3 {
  margin: 0;
  font-size: clamp(1rem, 1.9vw, 1.18rem);
  font-weight: 700;
  color: var(--xb-snow);
}

.page-contact .contact-coop__grid p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--xb-mist);
}

@media (min-width: 760px) {
  .page-contact .contact-coop__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 18px;
  }

  .page-contact .contact-coop__grid > :nth-child(2),
  .page-contact .contact-coop__grid > :nth-child(4) {
    margin-top: 20px;
  }
}

.page-contact .contact-collapse-wrap {
  margin-top: clamp(26px, 4vw, 42px);
  display: grid;
  gap: 12px;
}

.page-contact .contact-collapse-wrap .xb-collapse {
  border-radius: var(--xb-radius);
  border: 1px solid var(--pc-line-soft);
  background: var(--xb-night);
}

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

.page-contact .contact-doclist li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--xb-mist);
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--pc-line-soft);
}

.page-contact .contact-doclist li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-doclist .xb-mono {
  font-size: 12px;
  line-height: 1.95;
  color: var(--xb-orange);
}

.page-contact .contact-collapse-wrap .xb-collapse__body a {
  color: var(--xb-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 31, .45);
}

.page-contact .contact-collapse-wrap .xb-collapse__body a:hover {
  border-bottom-color: var(--xb-orange);
}

/* ---------- 地址与备案 ---------- */
.page-contact .contact-locate {
  position: relative;
  margin-top: clamp(34px, 5vw, 64px);
  padding-top: clamp(22px, 3.2vw, 36px);
}

.page-contact .contact-locate__rail {
  height: 10px;
  background-image:
    repeating-linear-gradient(90deg, var(--xb-rule) 0 1px, transparent 1px 20px),
    repeating-linear-gradient(90deg, var(--xb-orange) 0 2px, transparent 2px 160px);
  opacity: .8;
}

.page-contact .contact-locate__rows {
  margin-top: clamp(20px, 3vw, 30px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .contact-locate__row {
  display: grid;
  gap: 8px;
  padding-left: 16px;
  border-left: 2px solid var(--xb-rule);
}

.page-contact .contact-locate__row p {
  margin: 0;
  font-size: clamp(14px, 1.7vw, 16px);
  line-height: 1.7;
  color: var(--xb-snow);
}

.page-contact .contact-locate__row .xb-mono {
  color: var(--xb-mist);
  letter-spacing: .03em;
}

.page-contact .contact-locate__note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 74ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--xb-mist);
}

.page-contact .contact-locate__note a {
  color: var(--xb-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 31, .45);
}

.page-contact .contact-locate__note a:hover {
  border-bottom-color: var(--xb-orange);
}

@media (min-width: 760px) {
  .page-contact .contact-locate__rows {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 24px;
  }
}

/* ---------- 键盘可达 ---------- */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--xb-green);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  .page-contact * {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }

  .page-contact .contact-coop__grid > :nth-child(2),
  .page-contact .contact-coop__grid > :nth-child(4) {
    margin-top: 0;
  }
}
<<<END>>>