.page-contact {
  --c-split-gap: clamp(28px, 4.6vw, 68px);
  --c-card-pad: clamp(22px, 3vw, 34px);
  background: var(--ink-0);
}

/* ---------- 首屏横幅 ---------- */
.page-contact .contact-hero {
  position: relative;
  min-height: clamp(400px, 54vw, 640px);
  display: flex;
  align-items: flex-end;
  isolation: isolate;
}

.page-contact .contact-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.page-contact .contact-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(.75) brightness(.55) contrast(1.05);
}

.page-contact .contact-hero__veil {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(88% 68% at 10% 4%, rgba(198, 255, 61, .20), transparent 62%),
    linear-gradient(180deg, rgba(8, 11, 10, .30) 0%, rgba(8, 11, 10, .93) 80%, var(--ink-0) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
  padding-top: clamp(72px, 11vw, 140px);
  padding-bottom: clamp(36px, 5vw, 64px);
}

.page-contact .contact-hero .crumbs {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .contact-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 7.4vw, 104px);
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--white);
  margin: 14px 0 0;
  max-width: 16ch;
}

.page-contact .contact-hero__title::after {
  content: "";
  display: block;
  width: clamp(64px, 11vw, 148px);
  height: 4px;
  margin-top: clamp(20px, 3vw, 32px);
  background: linear-gradient(90deg, var(--lime), var(--orange));
}

.page-contact .contact-hero__lede {
  margin-top: clamp(20px, 3vw, 30px);
  max-width: 58ch;
  color: var(--muted);
  font-size: clamp(15px, 1.4vw, 18px);
}

/* ---------- 主体分屏 ---------- */
.page-contact .contact-body {
  position: relative;
  padding-bottom: clamp(72px, 10vw, 140px);
}

.page-contact .contact-body::before {
  content: "";
  position: absolute;
  top: 6%;
  right: -14%;
  width: 46vw;
  height: 46vw;
  max-width: 640px;
  max-height: 640px;
  border-radius: 46% 54% 62% 38% / 52% 44% 56% 48%;
  background: radial-gradient(circle at 40% 40%, rgba(15, 61, 46, .95), rgba(15, 61, 46, 0) 68%);
  filter: blur(8px);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-split {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--c-split-gap);
  align-items: start;
}

.page-contact .contact-side {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-contact .contact-main {
  display: grid;
  gap: clamp(48px, 6.5vw, 92px);
  min-width: 0;
}

/* ---------- 左栏信息卡 ---------- */
.page-contact .contact-card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--c-card-pad);
}

.page-contact .contact-card--sla {
  background:
    linear-gradient(160deg, rgba(15, 61, 46, .85) 0%, rgba(22, 32, 28, .96) 62%),
    var(--ink-2);
}

.page-contact .contact-card__title {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--lime);
  font-weight: 500;
}

.page-contact .contact-line {
  display: grid;
  justify-items: start;
  gap: 8px;
  padding-bottom: clamp(16px, 2.4vw, 22px);
  margin-bottom: clamp(16px, 2.4vw, 22px);
  border-bottom: 1px dashed var(--line);
}

.page-contact .contact-line--last {
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0;
}

.page-contact .contact-line__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.page-contact .contact-line__val {
  font-size: clamp(19px, 2.3vw, 25px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--white);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color 160ms var(--ease);
}

.page-contact .contact-line__val--addr {
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
  line-height: 1.6;
}

.page-contact a.contact-line__val:hover {
  color: var(--lime);
}

.page-contact .copy-btn {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--lime);
  background: transparent;
  border: 1px solid rgba(198, 255, 61, .42);
  border-radius: 999px;
  padding: 5px 14px;
  cursor: pointer;
  transition: background 160ms var(--ease), color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--lime-soft);
  border-color: var(--lime);
}

.page-contact .contact-card__foot {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  padding-top: clamp(16px, 2.4vw, 20px);
  border-top: 1px solid var(--line);
}

.page-contact .contact-card__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .contact-card__note a,
.page-contact .contact-inline a,
.page-contact .check-item__body a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, .38);
}

.page-contact .contact-card__note a:hover,
.page-contact .contact-inline a:hover,
.page-contact .check-item__body a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 时效数字 ---------- */
.page-contact .sla {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0;
}

.page-contact .sla__num {
  font-family: var(--font-mono);
  font-size: clamp(52px, 7vw, 76px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  letter-spacing: -.04em;
}

.page-contact .sla__unit {
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 700;
  color: var(--white);
}

.page-contact .tips {
  list-style: none;
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .tips li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--orange);
}

/* ---------- 右栏章节头部 ---------- */
.page-contact .contact-head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-contact .contact-head__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 46px);
  line-height: 1.06;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-contact .contact-head__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 三类来意 ---------- */
.page-contact .intent-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-contact .intent {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(16px, 2.4vw, 30px);
  padding: clamp(22px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .intent__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--orange);
  padding-top: .3em;
}

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

.page-contact .intent__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 800;
  color: var(--white);
  letter-spacing: -.01em;
}

.page-contact .intent__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .intent__need {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--white);
  background: var(--ink-3);
  border-left: 2px solid var(--lime);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 16px;
}

.page-contact .intent__need-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--lime);
  margin-right: 8px;
}

.page-contact .contact-inline {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 68ch;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-list {
  display: grid;
  gap: clamp(16px, 2.2vw, 22px);
}

.page-contact .coop {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(16px, 2.4vw, 28px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(22px, 3vw, 32px);
  transition: border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-contact .coop:hover {
  border-color: rgba(198, 255, 61, .38);
  background: var(--ink-3);
}

.page-contact .coop__idx {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  opacity: .85;
}

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

.page-contact .coop__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 800;
  color: var(--white);
}

.page-contact .coop__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 60ch;
}

.page-contact .coop__cond {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 62ch;
}

.page-contact .coop__cond-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--orange);
  margin-right: 8px;
}

.page-contact .coop__mail {
  margin: 16px 0 0;
  display: inline-block;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--lime);
  background: var(--lime-soft);
  border-radius: 999px;
  padding: 6px 14px;
}

/* ---------- 流程示意 ---------- */
.page-contact .check-figure {
  margin: 0 0 clamp(26px, 3.6vw, 40px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-2);
}

.page-contact .check-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.7) brightness(.72);
}

.page-contact .check-figure__cap {
  margin: 0;
  padding: 14px clamp(18px, 2.4vw, 26px) 18px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .03em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 来意清单 ---------- */
.page-contact .check-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.page-contact .check-item {
  border-bottom: 1px solid var(--line);
}

.page-contact .check-item__sum {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  font-size: clamp(15px, 1.7vw, 18px);
  font-weight: 700;
  color: var(--white);
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--ease);
}

.page-contact .check-item__sum::-webkit-details-marker {
  display: none;
}

.page-contact .check-item__sum::before {
  content: "+";
  flex: none;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--lime);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .check-item[open] .check-item__sum::before {
  content: "−";
  transform: rotate(180deg);
  border-color: rgba(198, 255, 61, .55);
}

.page-contact .check-item__sum:hover {
  color: var(--lime);
}

.page-contact .check-item__body {
  padding: 0 0 clamp(18px, 2.4vw, 26px) 38px;
}

.page-contact .check-item__body p {
  margin: 0 0 10px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 66ch;
}

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

.page-contact .check-item__tpl {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--lime);
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  margin-bottom: 14px;
  overflow-wrap: anywhere;
}

/* ---------- 桌面分屏 ---------- */
@media (min-width: 960px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(280px, 1fr) minmax(0, 2fr);
  }

  .page-contact .contact-side {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (min-width: 1200px) {
  .page-contact .coop-list {
    grid-template-columns: 1fr;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 639px) {
  .page-contact .contact-line__val,
  .page-contact .intent__need,
  .page-contact .coop__mail,
  .page-contact .check-item__tpl {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .page-contact .intent {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .page-contact .intent__idx {
    padding-top: 0;
  }

  .page-contact .coop {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .page-contact .check-item__body {
    padding-left: 0;
  }

  .page-contact .contact-hero__title::after {
    height: 3px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .coop,
  .page-contact .check-item__sum,
  .page-contact .check-item__sum::before,
  .page-contact .contact-line__val {
    transition: none;
  }
}
<<<END>>>