.page-contact {
  --co-gap: clamp(20px, 3vw, 40px);
  background: var(--bm-cockpit);
  color: var(--bm-cream);
  font-family: var(--bm-font-body);
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.75;
}

.page-contact .co-shell {
  max-width: var(--bm-shell);
  margin: 0 auto;
  padding: 0 var(--bm-gutter) clamp(36px, 6vw, 76px);
}

.page-contact a {
  color: var(--bm-blue);
  text-decoration: none;
}
.page-contact a:hover {
  color: var(--bm-orange);
}

/* 面包屑 */
.page-contact .co-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: clamp(16px, 3vw, 28px) 0 0;
  font-family: var(--bm-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--bm-faint);
}
.page-contact .co-crumbs a {
  color: var(--bm-dim);
}
.page-contact .co-crumbs__sep {
  color: var(--bm-gauge);
}

/* 首屏 */
.page-contact .co-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 4vw, 44px) 0 clamp(32px, 5vw, 64px);
  border-bottom: 1px solid var(--bm-line);
}
.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(58% 72% at 12% 18%, rgba(45, 156, 255, .17), transparent 70%),
    radial-gradient(46% 62% at 88% 74%, rgba(255, 138, 61, .13), transparent 72%);
  pointer-events: none;
}
.page-contact .co-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .co-eyebrow {
  margin: 0 0 12px;
  font-family: var(--bm-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--bm-cyan);
}

.page-contact .co-hero__title {
  margin: 0 0 18px;
  font-family: var(--bm-font-head);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--bm-cream);
}

.page-contact .co-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--bm-dim);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .co-hero__stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  background: var(--bm-line);
  border-top: 1px solid var(--bm-line);
}
.page-contact .co-hero__stats li {
  background: var(--bm-cockpit);
  padding: 14px 12px 12px 0;
  min-width: 0;
}
.page-contact .co-stat__num {
  display: block;
  font-family: var(--bm-font-mono);
  font-weight: 600;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.1;
  color: var(--bm-orange);
}
.page-contact .co-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--bm-dim);
}

.page-contact .co-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--bm-line-2);
  background: var(--bm-deep);
  overflow: hidden;
}
.page-contact .co-hero__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}
.page-contact .co-hero__figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 18px 16px 12px;
  font-family: var(--bm-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bm-silver);
  background: linear-gradient(to top, rgba(8, 24, 38, .92), rgba(8, 24, 38, 0));
}

/* 布局与锚点轨 */
.page-contact .co-layout {
  display: grid;
  gap: 0;
}

.page-contact .co-rail {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 14px 0;
  border-bottom: 1px solid var(--bm-line);
  scrollbar-width: thin;
}
.page-contact .co-rail__label {
  display: none;
}
.page-contact .co-rail__link {
  flex: 0 0 auto;
  padding: 6px 10px;
  font-family: var(--bm-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  white-space: nowrap;
  color: var(--bm-dim);
  border-bottom: 2px solid transparent;
}
.page-contact .co-rail__link:hover {
  color: var(--bm-cream);
}
.page-contact .co-rail__link.is-active {
  color: var(--bm-cream);
  border-bottom-color: var(--bm-orange);
}

.page-contact .co-flow {
  min-width: 0;
}

/* 章节 */
.page-contact .co-section {
  padding: clamp(34px, 5vw, 64px) 0;
  border-bottom: 1px solid var(--bm-line);
}
.page-contact .co-section:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .co-head__title {
  margin: 0 0 12px;
  font-family: var(--bm-font-head);
  font-weight: 800;
  font-size: clamp(23px, 3vw, 38px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--bm-cream);
}
.page-contact .co-head__lead {
  margin: 0;
  max-width: 62ch;
  color: var(--bm-dim);
  font-size: 15px;
}

/* 分段切换 */
.page-contact .co-tabs {
  margin-top: 26px;
}
.page-contact .co-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  border-bottom: 1px solid var(--bm-line-2);
}
.page-contact .co-tabs .co-tab {
  flex: 0 1 auto;
  padding: 12px 16px;
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--bm-dim);
  font-family: var(--bm-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color .2s var(--bm-ease), border-color .2s var(--bm-ease);
}
.page-contact .co-tabs .co-tab:hover {
  color: var(--bm-cream);
}
.page-contact .co-tabs .co-tab.is-active,
.page-contact .co-tabs .co-tab[aria-selected="true"] {
  color: var(--bm-cream);
  border-bottom-color: var(--bm-orange);
}

.page-contact .co-panel {
  display: grid;
  gap: 22px;
  padding-top: 26px;
  min-width: 0;
}
.page-contact .co-panel__body {
  min-width: 0;
}
.page-contact .co-panel__lead {
  margin: 0 0 18px;
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.72;
  color: var(--bm-cream);
}
.page-contact .co-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}
.page-contact .co-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: var(--bm-dim);
}
.page-contact .co-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 10px;
  height: 2px;
  background: var(--bm-cyan);
}
.page-contact .co-panel__aside {
  border: 1px solid var(--bm-line-2);
  border-left: 3px solid var(--bm-orange);
  background: var(--bm-deep);
  padding: 18px 18px 20px;
  min-width: 0;
}
.page-contact .co-panel__aside-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--bm-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--bm-cyan);
}
.page-contact .co-panel__aside-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--bm-silver);
}

/* 流程步骤 */
.page-contact .co-steps {
  list-style: none;
  display: grid;
  gap: 22px;
  margin: 28px 0 0;
  padding: 0;
}
.page-contact .co-step {
  position: relative;
  border-top: 2px solid var(--bm-gauge);
  padding-top: 16px;
  min-width: 0;
}
.page-contact .co-step:first-child {
  border-top-color: var(--bm-orange);
}
.page-contact .co-step__index {
  display: block;
  font-family: var(--bm-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--bm-cyan);
}
.page-contact .co-step__title {
  margin: 6px 0 8px;
  font-family: var(--bm-font-head);
  font-weight: 800;
  font-size: 18px;
  color: var(--bm-cream);
}
.page-contact .co-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--bm-dim);
}

/* 团队带 */
.page-contact .co-team {
  background: var(--bm-deep);
  border-left: 3px solid var(--bm-cyan);
  padding: clamp(22px, 3.4vw, 36px);
}
.page-contact .co-team__intro .co-head__title {
  font-size: clamp(22px, 2.6vw, 32px);
}
.page-contact .co-team__roles {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 24px 0 0;
  padding: 1px;
  background: var(--bm-line);
}
.page-contact .co-role {
  background: var(--bm-cockpit);
  padding: 16px 14px 18px;
  min-width: 0;
}
.page-contact .co-role__name {
  display: block;
  font-family: var(--bm-font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--bm-cream);
}
.page-contact .co-role__desc {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.62;
  color: var(--bm-dim);
}

/* 响应时效 */
.page-contact .co-clock {
  display: grid;
  gap: 1px;
  margin-top: 24px;
  padding: 1px;
  background: var(--bm-line);
  border-top: 2px solid var(--bm-blue);
}
.page-contact .co-clock__item {
  background: var(--bm-cockpit);
  padding: 18px 16px;
}
.page-contact .co-clock__num {
  display: block;
  font-family: var(--bm-font-mono);
  font-weight: 600;
  font-size: clamp(20px, 2.4vw, 28px);
  color: var(--bm-blue);
  letter-spacing: .01em;
}
.page-contact .co-clock__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--bm-dim);
}
.page-contact .co-clock__note {
  margin: 0;
  padding: 16px;
  background: var(--bm-cockpit);
  font-size: 14px;
  line-height: 1.72;
  color: var(--bm-silver);
}

/* 联系卡 */
.page-contact .co-contact {
  display: grid;
  margin-top: 26px;
  border: 1px solid var(--bm-line-2);
}
.page-contact .co-contact__card {
  display: grid;
  gap: 20px;
  align-content: start;
  padding: clamp(20px, 3vw, 32px);
  background: var(--bm-deep);
  min-width: 0;
}
.page-contact .co-contact__row {
  border-top: 1px solid var(--bm-line);
  padding-top: 16px;
  min-width: 0;
}
.page-contact .co-contact__row:first-child {
  border-top: 0;
  padding-top: 0;
}
.page-contact .co-contact__key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--bm-font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--bm-cyan);
}
.page-contact .co-contact__val {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.page-contact .co-contact__mail,
.page-contact .co-contact__phone {
  font-family: var(--bm-font-mono);
  font-size: clamp(15px, 1.6vw, 19px);
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--bm-cream);
  word-break: break-all;
  min-width: 0;
}
.page-contact .co-contact__addr {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--bm-dim);
}
.page-contact .co-contact__status {
  font-family: var(--bm-font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--bm-cyan);
}
.page-contact .co-contact__status:empty {
  display: none;
}
.page-contact .co-contact__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--bm-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--bm-dim);
}
.page-contact .co-contact__visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  min-height: 220px;
  background: var(--bm-cockpit);
}
.page-contact .co-contact__visual img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .co-contact__visual-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 20px 16px 12px;
  font-family: var(--bm-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bm-silver);
  background: linear-gradient(to top, rgba(8, 24, 38, .92), rgba(8, 24, 38, 0));
}

/* 常见问题 */
.page-contact .co-faq {
  margin-top: 24px;
  border-top: 1px solid var(--bm-line);
}
.page-contact .co-faq__item {
  border-bottom: 1px solid var(--bm-line);
}
.page-contact .co-faq__q {
  position: relative;
  padding: 18px 44px 18px 0;
  font-family: var(--bm-font-head);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  color: var(--bm-cream);
  cursor: pointer;
  list-style: none;
}
.page-contact .co-faq__q::-webkit-details-marker {
  display: none;
}
.page-contact .co-faq__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--bm-font-mono);
  font-size: 20px;
  font-weight: 500;
  color: var(--bm-orange);
  line-height: 1;
}
.page-contact .co-faq__item[open] .co-faq__q::after {
  content: "−";
}
.page-contact .co-faq__item[open] .co-faq__q {
  color: var(--bm-blue);
}
.page-contact .co-faq__a {
  padding: 0 0 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--bm-dim);
}
.page-contact .co-faq__a p {
  margin: 0;
  max-width: 68ch;
}

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-contact .co-hero__stats li {
    padding: 18px 16px 14px 0;
  }
  .page-contact .co-clock {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .co-clock__note {
    grid-column: 1 / -1;
  }
}

@media (min-width: 860px) {
  .page-contact .co-hero {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }
  .page-contact .co-panel {
    grid-template-columns: 1.15fr .85fr;
    gap: clamp(24px, 3vw, 40px);
    align-items: start;
  }
  .page-contact .co-contact {
    grid-template-columns: 1.25fr .75fr;
  }
  .page-contact .co-team__roles {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-contact .co-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
  }
  .page-contact .co-step {
    padding-right: 22px;
  }
  .page-contact .co-step + .co-step {
    padding-left: 22px;
    border-left: 1px solid var(--bm-line);
  }
}

@media (min-width: 1024px) {
  .page-contact .co-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }
  .page-contact .co-rail {
    display: block;
    position: sticky;
    top: calc(var(--bm-header-h) + 20px);
    overflow: visible;
    padding: 34px 0 0;
    border-bottom: 0;
  }
  .page-contact .co-rail__label {
    display: block;
    margin: 0 0 12px;
    font-family: var(--bm-font-mono);
    font-size: 11px;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--bm-faint);
  }
  .page-contact .co-rail__link {
    display: block;
    padding: 8px 0 8px 14px;
    border-bottom: 0;
    border-left: 2px solid var(--bm-line);
  }
  .page-contact .co-rail__link.is-active {
    border-left-color: var(--bm-orange);
    border-bottom-color: transparent;
  }
}

@media (min-width: 1200px) {
  .page-contact .co-hero {
    grid-template-columns: 6.5fr 5.5fr;
    gap: clamp(40px, 5vw, 76px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-tabs .co-tab {
    transition: none;
  }
}
<<<END>>>