.page-contact {
  --pc-sticky-top: calc(var(--sf-header-h) + 28px);
  --pc-card-line: rgba(23, 232, 208, .24);
  --pc-on-dark: rgba(244, 248, 252, .74);
  --pc-on-dark-soft: rgba(244, 248, 252, .56);
  --pc-divider: rgba(199, 214, 230, .2);
}

/* ============ 首屏 ============ */
.page-contact .pc-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--sf-header-h) + clamp(30px, 6vw, 76px));
  padding-bottom: clamp(38px, 6vw, 72px);
}

.page-contact .pc-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .pc-hero__title {
  margin: clamp(16px, 2.6vw, 26px) 0 0;
  max-width: 14ch;
  font-size: clamp(38px, 8vw, 84px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--sf-paper);
}

.page-contact .pc-hero__lede {
  margin-top: clamp(18px, 2.8vw, 26px);
  max-width: 58ch;
  color: var(--pc-on-dark);
}

.page-contact .pc-hero__metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
  margin: clamp(28px, 4.5vw, 46px) 0 0;
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--pc-divider);
  list-style: none;
}

.page-contact .pc-hero__metrics li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-contact .pc-hero__metrics .sf-mono {
  font-size: clamp(26px, 4.2vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--sf-cyan);
}

.page-contact .pc-hero__metrics li > span:last-child {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--pc-on-dark-soft);
}

@media (min-width: 720px) {
  .page-contact .pc-hero__metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px 24px;
  }
}

.page-contact .pc-heromedia {
  margin: 0;
  line-height: 0;
  overflow: hidden;
  background: linear-gradient(120deg, var(--sf-deep-3), var(--sf-deep-2));
}

.page-contact .pc-heromedia img {
  display: block;
  width: 100%;
  height: clamp(170px, 32vw, 380px);
  object-fit: cover;
}

/* ============ 主体两栏 ============ */
.page-contact .pc-body {
  background: var(--sf-paper);
  color: var(--sf-ink);
}

.page-contact .pc-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 56px);
  align-items: start;
}

.page-contact .pc-body__title {
  margin-top: 10px;
}

.page-contact .pc-body__main {
  min-width: 0;
}

@media (min-width: 1000px) {
  .page-contact .pc-body__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-contact .pc-body__aside {
    position: sticky;
    top: var(--pc-sticky-top);
  }
}

/* ============ 常驻联系卡片 ============ */
.page-contact .pc-contact {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3.2vw, 36px);
  border: 1px solid var(--pc-card-line);
  border-radius: var(--sf-radius-l);
  background: linear-gradient(155deg, var(--sf-deep-2) 0%, var(--sf-deep) 74%);
  box-shadow: var(--sf-shadow-2);
  color: var(--sf-paper);
}

.page-contact .pc-contact::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--sf-cyan), var(--sf-orange));
}

.page-contact .pc-contact::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -80px;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(23, 232, 208, .2), transparent 68%);
  pointer-events: none;
}

.page-contact .pc-contact__title {
  position: relative;
  margin: 10px 0 0;
  font-size: clamp(22px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--sf-paper);
}

.page-contact .pc-contact__list {
  position: relative;
  margin: 20px 0 0;
}

.page-contact .pc-contact__row {
  padding: 16px 0;
  border-bottom: 1px dashed var(--pc-divider);
}

.page-contact .pc-contact__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .pc-contact__row dt {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--sf-cyan);
}

.page-contact .pc-contact__row dd {
  margin: 9px 0 0;
  min-width: 0;
  font-size: 15px;
  line-height: 1.65;
  color: var(--sf-paper);
}

.page-contact .pc-contact__val {
  display: block;
  font-family: var(--sf-font-mono);
  font-size: clamp(14px, 1.7vw, 16.5px);
  font-weight: 600;
  letter-spacing: .01em;
  word-break: break-all;
  color: var(--sf-paper);
}

.page-contact .pc-contact__addr {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 15px;
  line-height: 1.6;
}

.page-contact .pc-contact__pin {
  flex: 0 0 auto;
  margin-top: 2px;
  color: var(--sf-orange);
}

.page-contact .pc-contact__hint {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--pc-on-dark-soft);
}

.page-contact .pc-contact__note {
  position: relative;
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--sf-orange);
  border-radius: var(--sf-radius-s);
  background: rgba(255, 138, 61, .13);
  font-size: 13.5px;
  line-height: 1.72;
  color: rgba(244, 248, 252, .88);
}

/* ============ 合作方向（可展开） ============ */
.page-contact .pc-types {
  margin-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--sf-line);
}

.page-contact .pc-type {
  position: relative;
  border-bottom: 1px solid var(--sf-line);
}

.page-contact .pc-type__head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-contact .pc-type .sf-acc__btn {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  width: 100%;
  padding: clamp(17px, 2.3vw, 24px) 0;
  border: 0;
  background: none;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  color: var(--sf-ink);
  transition: color .18s var(--sf-ease);
}

.page-contact .pc-type .sf-acc__btn:hover .sf-acc__label {
  color: var(--sf-cyan-2);
}

.page-contact .pc-type .sf-acc__num {
  flex: 0 0 auto;
  font-family: var(--sf-font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--sf-cyan-2);
  transition: color .18s var(--sf-ease);
}

.page-contact .pc-type .sf-acc__label {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 800;
  letter-spacing: -0.012em;
  transition: color .18s var(--sf-ease);
}

.page-contact .pc-type .sf-acc__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
}

.page-contact .pc-type .sf-acc__icon::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--sf-ink);
  border-bottom: 2px solid var(--sf-ink);
  transform: translate(-62%, -50%) rotate(-45deg);
  transition: transform .18s var(--sf-ease), border-color .18s var(--sf-ease);
}

.page-contact .pc-type .sf-acc__btn[aria-expanded="true"] .sf-acc__num {
  color: var(--sf-orange);
}

.page-contact .pc-type .sf-acc__btn[aria-expanded="true"] .sf-acc__icon::before {
  border-color: var(--sf-cyan-2);
  transform: translate(-50%, -62%) rotate(45deg);
}

.page-contact .pc-type .sf-acc__panel {
  overflow: hidden;
}

.page-contact .pc-type .sf-acc__body {
  padding: 0 0 clamp(16px, 2.2vw, 24px) calc(13px + clamp(12px, 2vw, 20px));
  max-width: 62ch;
  color: #2c3a4a;
  font-size: 15.5px;
  line-height: 1.82;
}

.page-contact .pc-type .sf-acc__body p {
  margin: 0 0 10px;
}

.page-contact .pc-type .sf-acc__body p:last-child {
  margin-bottom: 0;
}

/* ============ 流程步骤 ============ */
.page-contact .pc-flow {
  position: relative;
  overflow: hidden;
}

.page-contact .pc-flow__inner {
  position: relative;
  z-index: 1;
}

.page-contact .pc-flow__title {
  margin-top: 10px;
  color: var(--sf-paper);
}

.page-contact .pc-flow__lede {
  margin-top: 14px;
  max-width: 56ch;
  color: var(--pc-on-dark);
}

.page-contact .pc-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-step {
  position: relative;
  padding: clamp(18px, 2.2vw, 24px);
  border: 1px solid rgba(23, 232, 208, .16);
  border-radius: var(--sf-radius-m);
  background: rgba(255, 255, 255, .03);
  transition: background .18s var(--sf-ease), border-color .18s var(--sf-ease), transform .18s var(--sf-ease);
}

.page-contact .pc-step:hover,
.page-contact .pc-step:focus-within {
  background: rgba(23, 232, 208, .08);
  border-color: var(--sf-cyan-2);
  transform: translateY(-2px);
}

.page-contact .pc-step__num {
  display: block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--sf-orange);
}

.page-contact .pc-step__title {
  margin: 10px 0 0;
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--sf-paper);
}

.page-contact .pc-step__desc {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 248, 252, .74);
}

.page-contact .pc-step__more {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sf-cyan-3);
  transition: max-height .22s var(--sf-ease), opacity .22s var(--sf-ease), margin-top .22s var(--sf-ease);
}

.page-contact .pc-step:hover .pc-step__more,
.page-contact .pc-step:focus-within .pc-step__more {
  max-height: 140px;
  margin-top: 12px;
  opacity: 1;
}

.page-contact .pc-step__time {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(23, 232, 208, .13);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--sf-cyan-3);
}

@media (min-width: 860px) {
  .page-contact .pc-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0;
  }

  .page-contact .pc-step {
    border-radius: var(--sf-radius-m);
    background: transparent;
    border-color: transparent;
    border-top: 2px solid rgba(23, 232, 208, .28);
    padding: 22px 18px 24px;
  }

  .page-contact .pc-step:hover,
  .page-contact .pc-step:focus-within {
    background: rgba(23, 232, 208, .07);
    border-color: rgba(23, 232, 208, .5);
    border-top-color: var(--sf-cyan);
  }
}

/* ============ 服务覆盖 ============ */
.page-contact .pc-coverage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-contact .pc-coverage__text {
  min-width: 0;
}

.page-contact .pc-coverage__text .sf-h2 {
  margin-top: 10px;
  color: var(--sf-ink);
}

.page-contact .pc-coverage__text .sf-prose {
  margin-top: 16px;
  color: #2c3a4a;
}

.page-contact .pc-coverage__list {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .pc-coverage__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 14px 0;
  border-top: 1px solid var(--sf-line);
}

.page-contact .pc-coverage__list li:last-child {
  border-bottom: 1px solid var(--sf-line);
}

.page-contact .pc-coverage__k {
  flex: 0 0 auto;
  min-width: 88px;
  font-size: 15px;
  font-weight: 700;
  color: var(--sf-cyan-2);
}

.page-contact .pc-coverage__v {
  flex: 1 1 220px;
  min-width: 0;
  font-size: 15px;
  line-height: 1.7;
  color: #2c3a4a;
}

.page-contact .pc-coverage__media {
  margin: 0;
  border-radius: var(--sf-radius-l);
  overflow: hidden;
}

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

.page-contact .pc-coverage__media .sf-media__cap {
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: .02em;
}

@media (min-width: 900px) {
  .page-contact .pc-coverage__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

/* ============ 常见问题 ============ */
.page-contact .pc-faqband {
  background: var(--sf-paper);
}

.page-contact .pc-faqband__title {
  margin-top: 10px;
}

.page-contact .pc-faq {
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .pc-faq .sf-acc__item {
  margin-bottom: 12px;
  border: 1px solid var(--sf-line);
  border-radius: var(--sf-radius-m);
  background: #fff;
  overflow: hidden;
  transition: border-color .18s var(--sf-ease), box-shadow .18s var(--sf-ease);
}

.page-contact .pc-faq .sf-acc__item:hover {
  border-color: var(--sf-cyan-2);
  box-shadow: var(--sf-shadow-1);
}

.page-contact .pc-faq .sf-acc__btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 18px clamp(16px, 2.4vw, 24px);
  border: 0;
  background: none;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  letter-spacing: -0.008em;
  color: var(--sf-ink);
}

.page-contact .pc-faq .sf-acc__num {
  flex: 0 0 auto;
  font-family: var(--sf-font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--sf-cyan-2);
}

.page-contact .pc-faq .sf-acc__label {
  flex: 1 1 auto;
  min-width: 0;
}

.page-contact .pc-faq .sf-acc__icon {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
}

.page-contact .pc-faq .sf-acc__icon::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--sf-ink);
  border-bottom: 2px solid var(--sf-ink);
  transform: translate(-62%, -50%) rotate(-45deg);
  transition: transform .18s var(--sf-ease), border-color .18s var(--sf-ease);
}

.page-contact .pc-faq .sf-acc__btn[aria-expanded="true"] .sf-acc__icon::before {
  border-color: var(--sf-orange);
  transform: translate(-50%, -62%) rotate(45deg);
}

.page-contact .pc-faq .sf-acc__body {
  padding: 0 clamp(16px, 2.4vw, 24px) 20px;
  max-width: 76ch;
  font-size: 15px;
  line-height: 1.82;
  color: #2c3a4a;
}

.page-contact .pc-faq .sf-acc__body p {
  margin: 0;
}

/* ============ 结尾行动 ============ */
.page-contact .pc-cta {
  position: relative;
  overflow: hidden;
}

.page-contact .pc-cta__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: center;
}

.page-contact .pc-cta__title {
  margin-top: 10px;
  color: var(--sf-paper);
}

.page-contact .pc-cta__lede {
  margin-top: 14px;
  max-width: 56ch;
  color: rgba(244, 248, 252, .82);
}

.page-contact .pc-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .pc-cta__actions .sf-btn {
  flex: 0 1 auto;
}

@media (min-width: 880px) {
  .page-contact .pc-cta__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-contact .pc-cta__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-contact .pc-cta__actions .sf-btn {
    text-align: center;
  }
}
<<<END>>>