.page-contact {
  --cp-hair: rgba(30, 78, 60, 0.85);
  --cp-cyan-06: rgba(47, 243, 196, 0.06);
  --cp-cyan-14: rgba(47, 243, 196, 0.14);
  --cp-cyan-30: rgba(47, 243, 196, 0.30);
  --cp-orange-14: rgba(255, 90, 43, 0.14);
  --cp-violet-14: rgba(108, 123, 255, 0.14);
  --cp-fog-10: rgba(233, 245, 239, 0.10);
  --cp-shadow: rgba(4, 18, 13, 0.45);
  padding-top: calc(var(--header-h) + 24px);
  padding-bottom: calc(var(--helpbar-h) + 56px);
}

.page-contact .contact-crumb {
  margin-bottom: 26px;
}

/* ========== 首屏 ========== */
.page-contact .contact-hero {
  padding: 8px 0 0;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 5.4vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--fog);
}

.page-contact .contact-hero__lead {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--fog-dim);
}

/* 首屏概览格 */
.page-contact .contact-snap {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--cp-hair);
  border: 1px solid var(--cp-hair);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-contact .contact-snap__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 18px;
  background: var(--pitch);
}

.page-contact .contact-snap__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--fog-dim);
}

.page-contact .contact-snap__v {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 5vw, 26px);
  line-height: 1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .contact-snap__u {
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 400;
  color: var(--fog-dim);
}

/* 章节跳转 */
.page-contact .contact-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 36px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--cp-hair);
}

.page-contact .contact-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--cp-hair);
  color: var(--fog);
  font-size: 13.5px;
  text-decoration: none;
  background: transparent;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .contact-jump__num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  transition: color 0.2s var(--ease);
}

.page-contact .contact-jump__link:hover,
.page-contact .contact-jump__link:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-contact .contact-jump__link:hover .contact-jump__num,
.page-contact .contact-jump__link:focus-visible .contact-jump__num {
  color: var(--ink);
}

/* ========== 主体分栏 ========== */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  margin-top: 52px;
}

.page-contact .contact-main {
  display: flex;
  flex-direction: column;
  gap: 60px;
  min-width: 0;
}

.page-contact .contact-aside {
  min-width: 0;
}

/* 章节外壳 */
.page-contact .contact-sec {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-contact .contact-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  align-items: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--cp-hair);
  margin-bottom: 26px;
}

.page-contact .contact-sec__num {
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--cyan);
  border: 1px solid var(--cp-cyan-30);
  padding: 5px 7px;
}

.page-contact .contact-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-contact .contact-sec__sub {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--fog-dim);
}

/* ========== 四类合作卡 ========== */
.page-contact .topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .topic-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px 18px 22px;
  background: var(--pitch-2);
  border: 1px solid var(--cp-hair);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-contact .topic-card--cyan {
  border-left: 3px solid var(--cyan);
}

.page-contact .topic-card--violet {
  border-left: 3px solid var(--violet);
}

.page-contact .topic-card--orange {
  border-left: 3px solid var(--orange);
}

.page-contact .topic-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .topic-card__name {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-contact .topic-card__idx {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--fog-dim);
}

.page-contact .topic-card__who {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--fog-dim);
}

.page-contact .topic-card__dl {
  margin: 0;
  display: grid;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--cp-fog-10);
}

.page-contact .topic-card__row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
}

.page-contact .topic-card__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  padding-top: 2px;
  color: var(--cyan);
}

.page-contact .topic-card--violet .topic-card__row dt {
  color: var(--violet);
}

.page-contact .topic-card--orange .topic-card__row dt {
  color: var(--orange);
}

.page-contact .topic-card__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

/* ========== 流程 ========== */
.page-contact .flow-media {
  margin: 0 0 26px;
  border: 1px solid var(--cp-hair);
  background: linear-gradient(150deg, var(--pitch-2) 0%, var(--panel) 58%, var(--pitch) 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  overflow: hidden;
}

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

.page-contact .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .flow-item {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

.page-contact .flow-item::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 4px;
  border-left: 1px dashed var(--cp-hair);
}

.page-contact .flow-item:last-child {
  padding-bottom: 0;
}

.page-contact .flow-item:last-child::before {
  display: none;
}

.page-contact .flow-item__num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: var(--panel);
  border: 1px solid var(--cp-cyan-30);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
}

.page-contact .flow-item__body {
  min-width: 0;
  padding-top: 6px;
}

.page-contact .flow-item__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--fog);
}

.page-contact .flow-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--fog-dim);
}

/* ========== 响应时效 ========== */
.page-contact .timing-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--cp-hair);
}

.page-contact .timing-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid var(--cp-hair);
}

.page-contact .timing-row__k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .timing-row__v {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--fog);
}

/* ========== 来信清单 ========== */
.page-contact .mail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--cp-hair);
  border: 1px solid var(--cp-hair);
}

.page-contact .mail-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 16px;
  background: var(--pitch);
}

.page-contact .mail-item__n {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  line-height: 1.8;
  color: var(--cyan);
}

.page-contact .mail-item h3 {
  margin: 0 0 4px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--fog);
}

.page-contact .mail-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog-dim);
}

.page-contact .mail-tip {
  margin: 18px 0 0;
  padding: 13px 16px;
  border-left: 3px solid var(--orange);
  background: var(--cp-orange-14);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--fog);
}

/* ========== 继续了解 ========== */
.page-contact .contact-more {
  display: grid;
  gap: 1px;
  background: var(--cp-hair);
  border: 1px solid var(--cp-hair);
}

.page-contact .contact-more__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  background: var(--pitch);
  color: var(--fog);
  text-decoration: none;
  transition: background-color 0.2s var(--ease);
}

.page-contact .contact-more__item .qs-mono {
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .contact-more__item strong {
  font-size: 14.5px;
  font-weight: 600;
}

.page-contact .contact-more__go {
  font-size: 15px;
  color: var(--cyan);
  transition: transform 0.2s var(--ease);
}

.page-contact .contact-more__item:hover,
.page-contact .contact-more__item:focus-visible {
  background: var(--panel);
}

.page-contact .contact-more__item:hover .contact-more__go,
.page-contact .contact-more__item:focus-visible .contact-more__go {
  transform: translateX(4px);
}

/* ========== 联系卡 ========== */
.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  padding: 24px 20px 22px;
  background: var(--panel);
  border: 1px solid var(--cp-cyan-30);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(16, 53, 40, 0.94) 0%, rgba(6, 26, 19, 0.97) 100%);
  z-index: 0;
}

.page-contact .contact-card__tex {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.2;
  z-index: 0;
  pointer-events: none;
}

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

.page-contact .contact-card__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--fog);
}

.page-contact .contact-fields {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-field {
  padding: 13px 0;
  border-top: 1px solid var(--cp-fog-10);
}

.page-contact .contact-field__k {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--cyan-soft);
}

.page-contact .contact-field__v {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fog);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--cp-fog-10);
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--fog-dim);
}

.page-contact .contact-card__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ========== 断点 ========== */
@media (min-width: 640px) {
  .page-contact .contact-hero__lead {
    font-size: 17px;
  }

  .page-contact .contact-snap__item {
    padding: 18px 18px 20px;
  }

  .page-contact .timing-row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-contact .topic-card {
    padding: 22px 20px 24px;
  }
}

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

  .page-contact .contact-more {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 52px;
    align-items: end;
  }

  .page-contact .contact-layout {
    margin-top: 66px;
  }
}

@media (min-width: 1000px) {
  .page-contact {
    padding-top: calc(var(--header-h) + 32px);
  }

  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-main {
    gap: 76px;
  }

  .page-contact .contact-aside {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-contact .contact-aside::before {
    content: "";
    position: absolute;
    left: -18px;
    top: 4px;
    bottom: 4px;
    width: 1px;
    background: repeating-linear-gradient(180deg, var(--cp-hair) 0 6px, transparent 6px 16px);
  }

  .page-contact .contact-card {
    padding: 30px 26px 28px;
    box-shadow: 0 24px 60px -40px var(--cp-shadow);
  }

  .page-contact .contact-field__v {
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-jump__link,
  .page-contact .topic-card,
  .page-contact .contact-more__item,
  .page-contact .contact-more__go {
    transition: none;
  }
}
<<<END>>>