.page-contact {
  --pc-pad: clamp(40px, 7vw, 88px);
  --pc-gap: clamp(18px, 3vw, 40px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

.page-contact h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 10px 0 0;
  color: var(--paper);
}

.page-contact h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  margin: 12px 0 8px;
  color: var(--paper);
}

.page-contact .eyebrow {
  color: var(--orange-soft);
}

.page-contact .lead {
  color: var(--sand);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  margin-top: 16px;
}

.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  margin-bottom: 20px;
}

.page-contact .crumbs__link {
  color: var(--blue-soft);
  text-decoration: none;
}

.page-contact .crumbs__link:hover {
  color: var(--orange-soft);
}

.page-contact .crumbs__sep {
  color: var(--line);
}

.page-contact .crumbs__current {
  color: var(--sand);
}

/* 首屏 */
.page-contact .contact-hero {
  padding: clamp(26px, 5vw, 56px) 0 clamp(36px, 6vw, 76px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(47, 123, 255, 0.18), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 90, 31, 0.14), transparent 66%),
    var(--ink);
}

.page-contact .contact-hero__frame {
  position: relative;
  display: grid;
  gap: var(--pc-gap);
  padding: clamp(20px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(158deg, rgba(12, 43, 33, 0.92), rgba(6, 26, 19, 0.55));
  box-shadow: var(--shadow);
}

.page-contact .contact-hero__frame::before,
.page-contact .contact-hero__frame::after {
  content: "";
  position: absolute;
  width: 26px;
  height: 26px;
  border: 1px solid var(--orange);
  opacity: 0.85;
}

.page-contact .contact-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .contact-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(28px, 6vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  color: var(--paper);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-contact .contact-hero__side {
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-hero__side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--blue-soft);
}

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

.page-contact .contact-hero__fact {
  display: grid;
  gap: 2px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero__fact:last-child {
  border-bottom: 0;
}

.page-contact .contact-hero__fact dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sand);
}

.page-contact .contact-hero__fact dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .contact-hero__fact .num {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--orange);
  letter-spacing: -0.01em;
}

/* 分隔色条 */
.page-contact .contact-strip {
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--orange) 0 16%,
    var(--blue) 16% 27%,
    var(--line) 27% 100%
  );
}

/* 合作方向筛选 */
.page-contact .contact-filter {
  padding: var(--pc-pad) 0;
  background: var(--ink);
  border-top: 1px solid var(--line);
}

.page-contact .contact-filter__head {
  display: grid;
  gap: 18px;
}

.page-contact .contact-filter__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .contact-filter__btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 9px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--sand);
  cursor: pointer;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-contact .contact-filter__btn:hover {
  border-color: var(--orange-soft);
  color: var(--orange-soft);
}

.page-contact .contact-filter__btn[aria-pressed="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: #1c0a02;
}

.page-contact .contact-filter__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-contact .contact-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-top: 2px solid var(--line);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(12, 43, 33, 0.8), rgba(6, 26, 19, 0.62));
  box-shadow: var(--shadow);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-contact .contact-card:hover {
  transform: translateY(-4px);
  border-top-color: var(--orange);
}

.page-contact .contact-card[hidden] {
  display: none;
}

.page-contact .contact-card__no {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-contact .contact-card .tag {
  align-self: flex-start;
  margin-top: 10px;
}

.page-contact .contact-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--sand);
}

.page-contact .contact-card p.contact-card__fit {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.6;
  color: var(--blue-soft);
}

.page-contact .contact-filter__empty {
  margin: 22px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--orange);
  background: rgba(12, 43, 33, 0.7);
  font-size: 14px;
  color: var(--sand);
}

/* 流程 */
.page-contact .contact-flow {
  position: relative;
  padding: var(--pc-pad) 0;
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.page-contact .contact-flow::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    transparent 0 30px,
    rgba(23, 63, 49, 0.45) 30px 31px
  );
  opacity: 0.6;
  pointer-events: none;
}

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

.page-contact .contact-flow__head {
  max-width: 720px;
}

.page-contact .contact-flow__arrow {
  display: none;
  width: 100%;
  height: 40px;
  margin: 28px 0 4px;
  color: var(--orange);
  opacity: 0.8;
}

.page-contact .contact-flow__steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .contact-step {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(6, 26, 19, 0.86);
}

.page-contact .contact-step__no {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--orange);
}

.page-contact .contact-step h3 {
  margin: 8px 0 6px;
  font-size: 16px;
}

.page-contact .contact-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.66;
  color: var(--sand);
}

.page-contact .contact-flow__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

/* 联系方式 */
.page-contact .contact-reach {
  padding: var(--pc-pad) 0;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(47, 123, 255, 0.16), transparent 62%),
    linear-gradient(180deg, var(--ink), var(--ink-2));
}

.page-contact .contact-reach__grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(6, 26, 19, 0.74);
  box-shadow: var(--shadow);
}

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

.page-contact .contact-reach__list {
  margin: 24px 0 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-reach__row {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-reach__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--blue-soft);
}

.page-contact .contact-reach__row dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-reach__link {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
  padding-bottom: 1px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-contact .contact-reach__link:hover {
  color: var(--orange-soft);
  border-color: var(--orange-soft);
}

.page-contact .contact-reach__hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.62;
  color: var(--sand);
}

.page-contact .contact-reach__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

/* 说明区 */
.page-contact .contact-notes {
  padding: var(--pc-pad) 0;
  border-top: 1px solid var(--line);
  background: var(--ink);
}

.page-contact .contact-notes__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-contact .contact-note {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(12, 43, 33, 0.72), rgba(6, 26, 19, 0.52));
}

.page-contact .contact-note--alt {
  border-left-color: var(--blue);
}

.page-contact .contact-note__intro {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sand);
}

.page-contact .contact-note ul {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .contact-note li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sand);
}

.page-contact .contact-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 1px;
  background: var(--orange);
}

.page-contact .contact-note--alt li::before {
  background: var(--blue);
}

.page-contact .contact-note__link {
  color: var(--blue-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-note__link:hover {
  color: var(--orange-soft);
  border-color: var(--orange-soft);
}

.page-contact .contact-note__tail {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.65;
  color: var(--blue-soft);
}

/* 收束色带 */
.page-contact .contact-close {
  padding: clamp(28px, 5vw, 52px) 0;
  background: linear-gradient(100deg, var(--orange) 0%, var(--orange-soft) 46%, var(--blue) 100%);
  color: var(--ink-text);
}

.page-contact .contact-close__inner {
  display: grid;
  gap: 18px;
}

.page-contact .contact-close__line {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 26px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ink-text);
}

.page-contact .contact-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .contact-close .btn--signal {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.page-contact .contact-close .btn--ghost {
  border-color: rgba(6, 26, 19, 0.55);
  color: var(--ink-text);
  background: transparent;
}

.page-contact .contact-close .btn--ghost:hover {
  border-color: var(--ink-text);
}

@media (min-width: 560px) {
  .page-contact .contact-reach__row {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (max-width: 519px) {
  .page-contact .contact-reach__actions .btn,
  .page-contact .contact-close__actions .btn {
    flex: 1 1 100%;
    text-align: center;
    justify-content: center;
  }
}

@media (min-width: 700px) {
  .page-contact .contact-filter__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-filter__head {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 28px;
  }

  .page-contact .contact-notes__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 24px;
    align-items: start;
  }

  .page-contact .contact-close__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 30px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__frame {
    grid-template-columns: minmax(0, 1.58fr) minmax(0, 0.82fr);
    align-items: end;
  }

  .page-contact .contact-hero__side {
    padding-top: 0;
    padding-left: clamp(16px, 2.4vw, 30px);
    border-top: 0;
    border-left: 1px solid var(--line-soft);
  }

  .page-contact .contact-flow__arrow {
    display: block;
  }

  .page-contact .contact-flow__steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    padding-bottom: 40px;
  }

  .page-contact .contact-step:nth-child(even) {
    transform: translateY(38px);
  }

  .page-contact .contact-reach__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
    padding: clamp(24px, 3vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .contact-filter__btn,
  .page-contact .contact-reach__link {
    transition: none;
  }

  .page-contact .contact-card:hover {
    transform: none;
  }

  .page-contact .contact-step:nth-child(even) {
    transform: none;
  }
}
<<<END>>>