.page-contact {
  --pc-gap: clamp(16px, 2.6vw, 28px);
  --pc-pad: clamp(20px, 3vw, 34px);
  color: var(--mist);
  font-family: var(--sans);
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 110px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-contact .pc-hero {
  position: relative;
  padding: clamp(26px, 5vw, 62px) 0 clamp(34px, 6vw, 74px);
  border-bottom: 1px solid var(--line-soft);
  background-color: var(--ink);
  background-image:
    radial-gradient(115% 82% at 92% -12%, rgba(200, 255, 61, 0.13), transparent 58%),
    linear-gradient(168deg, var(--carbon) 0%, var(--ink) 74%),
    repeating-linear-gradient(90deg, transparent 0 62px, rgba(242, 245, 241, 0.035) 62px 63px);
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(48vw, 460px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-lime));
  pointer-events: none;
}

.page-contact .pc-hero h1 {
  margin: 18px 0 0;
  max-width: 24ch;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(27px, 4.9vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.012em;
  color: var(--white);
}

.page-contact .pc-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(242, 245, 241, 0.82);
}

.page-contact .pc-hero__meta {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .pc-hero__meta li {
  flex: 1 1 190px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--glass);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-contact .pc-hero__num {
  flex: none;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-contact .pc-hero__cap {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 章节头 ---------- */

.page-contact .pc-section-head {
  max-width: 74ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .pc-section-head h2 {
  margin: 10px 0 0;
  font-family: var(--display);
  font-size: clamp(21px, 3.1vw, 33px);
  line-height: 1.28;
  letter-spacing: -0.006em;
  color: var(--white);
}

.page-contact .pc-section-head p {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--slate);
}

/* ---------- 步骤条 ---------- */

.page-contact .pc-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--line);
}

.page-contact .pc-track__item {
  position: relative;
  padding: 22px 0 22px 46px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .pc-track__num {
  position: absolute;
  left: 0;
  top: 24px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-contact .pc-track__item h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

.page-contact .pc-track__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--slate);
}

/* ---------- 图 ---------- */

.page-contact .pc-figure {
  margin: clamp(26px, 4vw, 48px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--carbon);
}

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

.page-contact .pc-figure figcaption {
  padding: 12px 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.85;
  color: var(--slate);
}

.page-contact .pc-figure--need {
  margin-top: clamp(20px, 3vw, 30px);
}

/* ---------- 双栏区 ---------- */

.page-contact .pc-need__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 42px);
}

.page-contact .pc-need__main h2 {
  margin: 10px 0 0;
  font-family: var(--display);
  font-size: clamp(21px, 3.1vw, 32px);
  line-height: 1.28;
  color: var(--white);
}

.page-contact .pc-need__intro {
  margin: 12px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--slate);
}

/* ---------- 清单 ---------- */

.page-contact .pc-checklist {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .pc-checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  column-gap: 14px;
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--deep);
  cursor: pointer;
  transition: border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-contact .pc-checklist__item:hover {
  border-color: rgba(242, 245, 241, 0.22);
}

.page-contact .pc-checklist__item:has(.pc-checklist__box:checked) {
  border-color: var(--line-lime);
  background-color: rgba(200, 255, 61, 0.055);
}

.page-contact .pc-checklist__box {
  grid-column: 1;
  grid-row: 1 / span 2;
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 1px solid var(--line-lime);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .pc-checklist__box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) scale(0);
  transition: transform 0.18s var(--ease);
}

.page-contact .pc-checklist__box:checked {
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .pc-checklist__box:checked::after {
  transform: rotate(45deg) scale(1);
}

.page-contact .pc-checklist__box:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-contact .pc-checklist__field {
  grid-column: 2;
  grid-row: 1;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--white);
}

.page-contact .pc-checklist__hint {
  grid-column: 2;
  grid-row: 2;
  margin-top: 4px;
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 400;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 联系渠道 ---------- */

.page-contact .pc-channels {
  padding: var(--pc-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, var(--deep) 0%, var(--carbon) 100%);
}

.page-contact .pc-channels h2 {
  margin: 10px 0 0;
  font-family: var(--display);
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.32;
  color: var(--white);
}

.page-contact .pc-channels__intro {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.88;
  color: var(--slate);
}

.page-contact .pc-channels__list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .pc-channel {
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(11, 31, 26, 0.55);
}

.page-contact .pc-channel__key {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .pc-channel__value {
  display: block;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: clamp(14px, 1.8vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: -0.01em;
  color: var(--lime);
  text-decoration: none;
  word-break: break-all;
}

a.pc-channel__value:hover {
  text-decoration: underline;
}

.page-contact .pc-channel__hint {
  display: block;
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.88;
  color: var(--slate);
}

.page-contact .pc-channels__list + .pc-channel--warn {
  margin-top: 12px;
}

.page-contact .pc-channel--warn {
  border-color: var(--line-warn);
  background: rgba(255, 122, 61, 0.07);
}

.page-contact .pc-channel--warn .pc-channel__key {
  color: var(--orange);
}

/* ---------- 内容合作 ---------- */

.page-contact .pc-coop__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
}

.page-contact .pc-coop__card {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--deep);
}

.page-contact .pc-coop__card h3 {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .pc-coop__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--slate);
}

.page-contact .pc-coop__note {
  margin: clamp(20px, 3vw, 32px) 0 0;
  max-width: 72ch;
  font-size: 14px;
  line-height: 1.9;
  color: var(--slate);
}

.page-contact .pc-coop__note a,
.page-contact .pc-scene__steps a,
.page-contact .pc-flow__item a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid var(--line-lime);
}

.page-contact .pc-coop__note a:hover,
.page-contact .pc-scene__steps a:hover,
.page-contact .pc-flow__item a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 常见场景 ---------- */

.page-contact .pc-scene__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
}

.page-contact .pc-scene__card {
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-top: 2px solid var(--line-lime);
  border-radius: var(--radius);
  background: var(--carbon);
}

.page-contact .pc-scene__badge {
  align-self: flex-start;
}

.page-contact .pc-scene__card h3 {
  margin: 16px 0 12px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--white);
}

.page-contact .pc-scene__steps {
  margin: 0;
  padding: 0 0 0 1.2em;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.88;
  color: var(--slate);
}

.page-contact .pc-scene__steps li::marker {
  color: var(--lime);
  font-family: var(--mono);
}

/* ---------- 后续流程 ---------- */

.page-contact .pc-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--line);
}

.page-contact .pc-flow__item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .pc-flow__num {
  padding-top: 4px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--lime);
}

.page-contact .pc-flow__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  line-height: 1.55;
  color: var(--white);
}

.page-contact .pc-flow__item p {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.92;
  color: var(--slate);
}

/* ---------- 尾段入口 ---------- */

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

.page-contact .pc-next__title {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.3;
  color: var(--white);
}

.page-contact .pc-next p {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--slate);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .pc-coop__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .pc-scene__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .pc-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .pc-track__item {
    padding: 30px 24px 6px 0;
    border-bottom: 0;
    border-right: 1px solid var(--line-soft);
  }

  .page-contact .pc-track__item:last-child {
    padding-right: 0;
    border-right: 0;
  }

  .page-contact .pc-track__num {
    position: static;
    display: block;
    margin-bottom: 14px;
  }

  .page-contact .pc-flow__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 52px);
  }

  .page-contact .pc-flow__item:nth-last-child(-n + 2) {
    border-bottom: 1px solid var(--line-soft);
  }
}

@media (min-width: 980px) {
  .page-contact .pc-need__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .pc-channels {
    position: sticky;
    top: calc(var(--header-space) + 20px);
  }
}

@media (min-width: 1180px) {
  .page-contact .pc-hero h1 {
    max-width: 26ch;
  }

  .page-contact .pc-flow__item {
    padding: 24px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-checklist__box,
  .page-contact .pc-checklist__box::after,
  .page-contact .pc-checklist__item {
    transition: none;
  }
}
<<<END>>>