.page-contact {
  --pc-pad: clamp(16px, 2.4vw, 26px);
  --pc-cut: 28px;
  background: var(--bs-ink);
  color: var(--bs-paper);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-block: clamp(20px, 4vw, 44px) clamp(34px, 5vw, 62px);
  background:
    radial-gradient(115% 85% at 88% -10%, rgba(53, 240, 160, .12), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(18, 41, 74, .85), transparent 70%);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-contact .contact-hero__copy .bs-index {
  margin: 14px 0 12px;
}

.page-contact .contact-hero__copy .bs-display {
  margin: 0 0 18px;
  max-width: 18em;
}

.page-contact .contact-hero__copy .bs-lede {
  margin: 0;
  max-width: 34em;
  color: var(--bs-silver);
}

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

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

/* ---------- 联系锚点 + 反馈卡片 ---------- */
.page-contact .contact-split {
  padding-block: clamp(26px, 4vw, 52px);
  background: linear-gradient(180deg, transparent, rgba(12, 28, 51, .55) 40%, transparent);
}

.page-contact .contact-split__grid {
  display: grid;
  gap: clamp(28px, 4vw, 46px);
}

.page-contact .contact-anchor {
  padding: clamp(22px, 3.2vw, 34px);
  background: linear-gradient(158deg, rgba(18, 41, 74, .96), rgba(12, 28, 51, .96));
  box-shadow: inset 0 0 0 1px var(--bs-steel);
  clip-path: polygon(var(--pc-cut) 0, 100% 0, 100% calc(100% - var(--pc-cut)), calc(100% - var(--pc-cut)) 100%, 0 100%, 0 var(--pc-cut));
}

.page-contact .contact-anchor__index {
  margin: 0 0 18px;
}

.page-contact .anchor-item {
  padding-block: 14px;
  border-top: 1px solid rgba(46, 74, 112, .75);
}

.page-contact .anchor-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-contact .anchor-label {
  display: block;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--bs-silver);
}

.page-contact .anchor-value {
  display: block;
  margin-top: 7px;
  font-family: var(--bs-mono);
  font-size: clamp(.94rem, 1.7vw, 1.08rem);
  line-height: 1.5;
  color: var(--bs-paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .anchor-value--key {
  color: var(--bs-signal);
}

.page-contact .anchor-value--plain {
  font-family: var(--bs-sans);
  color: var(--bs-silver);
  font-size: clamp(.94rem, 1.6vw, 1rem);
}

.page-contact .anchor-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(46, 74, 112, .75);
  font-size: .88rem;
  line-height: 1.7;
  color: var(--bs-silver);
}

.page-contact .contact-stack__head .bs-index {
  margin: 0 0 10px;
}

.page-contact .contact-stack__title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3.4vw, 2.15rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.01em;
}

.page-contact .contact-stack__intro {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  max-width: 44em;
  color: var(--bs-silver);
  font-size: .96rem;
  line-height: 1.75;
}

.page-contact .fb-stack {
  display: grid;
  gap: clamp(10px, 1.6vw, 16px);
}

.page-contact .fb-card {
  background: linear-gradient(90deg, rgba(18, 41, 74, .92), rgba(12, 28, 51, .92));
  border-left: 2px solid var(--bs-steel);
  transition: border-color .3s var(--bs-ease), background .3s var(--bs-ease);
}

.page-contact .fb-card:hover {
  border-left-color: var(--bs-silver);
}

.page-contact .fb-card[open] {
  border-left-color: var(--bs-signal);
  background: linear-gradient(90deg, rgba(18, 41, 74, 1), rgba(12, 28, 51, .96));
}

.page-contact .fb-card__head {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  padding: 18px var(--pc-pad);
  cursor: pointer;
  list-style: none;
  outline-offset: -2px;
}

.page-contact .fb-card__head::-webkit-details-marker {
  display: none;
}

.page-contact .fb-card__num {
  font-family: var(--bs-mono);
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--bs-signal);
  flex: none;
}

.page-contact .fb-card__title {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(1rem, 2vw, 1.16rem);
  font-weight: 500;
  color: var(--bs-paper);
  line-height: 1.4;
}

.page-contact .fb-card__hint {
  flex: none;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--bs-silver);
}

.page-contact .fb-card__hint::after {
  content: "+";
  display: inline-block;
  margin-left: 7px;
  font-size: 15px;
  line-height: 1;
  color: var(--bs-signal);
  transition: transform .3s var(--bs-ease);
}

.page-contact .fb-card[open] .fb-card__hint::after {
  transform: rotate(45deg);
}

.page-contact .fb-card__body {
  padding: 0 var(--pc-pad) 20px;
  border-top: 1px dashed rgba(46, 74, 112, .85);
  margin-top: 2px;
  padding-top: 16px;
}

.page-contact .fb-card__body p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.78;
  color: var(--bs-silver);
}

.page-contact .fb-card__label {
  margin: 16px 0 0;
  font-family: var(--bs-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--bs-silver);
}

.page-contact .fb-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .fb-list li {
  position: relative;
  padding-left: 22px;
  font-size: .93rem;
  line-height: 1.7;
  color: var(--bs-paper);
}

.page-contact .fb-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 11px;
  height: 1px;
  background: var(--bs-signal);
}

.page-contact .fb-card__after {
  margin-top: 16px !important;
  padding-top: 14px;
  border-top: 1px solid rgba(46, 74, 112, .7);
  color: var(--bs-silver) !important;
  font-size: .9rem !important;
}

/* ---------- 受理流程 ---------- */
.page-contact .contact-flow {
  padding-block: clamp(52px, 8vw, 96px);
  background: var(--bs-navy);
  clip-path: polygon(0 0, 100% 28px, 100% 100%, 0 100%);
}

.page-contact .contact-flow__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

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

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

.page-contact .contact-flow__body .bs-index {
  margin: 0 0 10px;
}

.page-contact .contact-flow__title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.01em;
}

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

.page-contact .flow-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid rgba(46, 74, 112, .85);
}

.page-contact .flow-list__num {
  font-family: var(--bs-mono);
  font-size: .8rem;
  letter-spacing: .08em;
  color: var(--bs-signal);
  padding-top: .22em;
}

.page-contact .flow-list__item h3 {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 500;
  color: var(--bs-paper);
}

.page-contact .flow-list__item p {
  margin: 0;
  font-size: .93rem;
  line-height: 1.75;
  color: var(--bs-silver);
}

/* ---------- 来访 ---------- */
.page-contact .contact-visit {
  padding-block: clamp(52px, 8vw, 96px);
}

.page-contact .contact-visit__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: center;
}

.page-contact .contact-visit__copy .bs-index {
  margin: 0 0 10px;
}

.page-contact .contact-visit__title {
  margin: 0 0 16px;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.01em;
}

.page-contact .contact-visit__addr {
  margin: 0 0 14px;
  padding-left: 16px;
  border-left: 2px solid var(--bs-signal);
  font-family: var(--bs-mono);
  font-size: clamp(.96rem, 1.9vw, 1.1rem);
  line-height: 1.6;
  color: var(--bs-paper);
}

.page-contact .contact-visit__copy p {
  margin: 0 0 12px;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--bs-silver);
}

.page-contact .contact-visit__copy p:last-child {
  margin-bottom: 0;
}

.page-contact .contact-visit__copy a {
  color: var(--bs-signal);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .contact-visit__map {
  border: 1px solid rgba(46, 74, 112, .8);
  background: linear-gradient(140deg, rgba(18, 41, 74, .55), rgba(5, 11, 24, .9));
  padding: clamp(10px, 2vw, 18px);
}

.page-contact .contact-visit__map svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 合作 ---------- */
.page-contact .contact-collab {
  padding-block: clamp(52px, 8vw, 96px);
  background: var(--bs-paper);
  color: var(--bs-ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
}

.page-contact .contact-collab__index {
  color: var(--bs-signal-deep) !important;
  margin: 0 0 10px;
}

.page-contact .contact-collab__title {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  font-weight: 300;
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--bs-ink);
}

.page-contact .contact-collab__intro {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 46em;
  font-size: .95rem;
  line-height: 1.8;
  color: #24384f;
}

.page-contact .collab-grid {
  display: grid;
  gap: clamp(14px, 2vw, 22px);
}

.page-contact .collab-item {
  padding: 20px 0 0;
  border-top: 1px solid rgba(5, 11, 24, .18);
}

.page-contact .collab-item__num {
  display: block;
  font-family: var(--bs-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--bs-signal-deep);
  margin-bottom: 8px;
}

.page-contact .collab-item h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 600;
  color: var(--bs-ink);
}

.page-contact .collab-item p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: #24384f;
}

/* ---------- 相关入口 ---------- */
.page-contact .contact-next {
  padding-block: clamp(26px, 4vw, 44px) clamp(16px, 3vw, 30px);
}

.page-contact .contact-next__inner {
  display: grid;
  gap: 10px;
}

.page-contact .contact-next__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid rgba(46, 74, 112, .7);
  color: var(--bs-paper);
  text-decoration: none;
  font-size: .95rem;
  transition: color .25s var(--bs-ease), border-color .25s var(--bs-ease);
}

.page-contact .contact-next__link .bs-mono {
  color: var(--bs-silver);
  font-size: .76rem;
  letter-spacing: .1em;
}

.page-contact .contact-next__link:hover,
.page-contact .contact-next__link:focus-visible {
  color: var(--bs-signal);
  border-bottom-color: var(--bs-signal);
}

.page-contact .contact-next__link:hover .bs-mono,
.page-contact .contact-next__link:focus-visible .bs-mono {
  color: var(--bs-signal);
}

.page-contact .contact-rule {
  height: 2px;
  margin-bottom: clamp(20px, 4vw, 42px);
  background: linear-gradient(90deg, transparent, var(--bs-signal) 18%, var(--bs-signal) 82%, transparent);
  opacity: .6;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .collab-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(18px, 2.4vw, 28px) clamp(24px, 3vw, 40px);
  }

  .page-contact .contact-next__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 3vw, 40px);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }

  .page-contact .contact-hero__figure img {
    aspect-ratio: 3 / 2;
  }

  .page-contact .contact-flow__inner {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }

  .page-contact .contact-visit__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-split__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .contact-anchor {
    position: sticky;
    top: calc(var(--bs-bar) + 20px);
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-card,
  .page-contact .fb-card__hint::after,
  .page-contact .contact-next__link {
    transition: none;
  }
}
<<<END>>>