.page-home {
  --home-frame: 3px;
  --home-shadow: 5px 5px 0 rgba(11, 37, 69, .16);
  background: var(--paper);
  color: var(--ink);
}

.page-home h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.22;
  margin: 10px 0 14px;
  color: var(--navy-900);
}

.page-home h3 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(18px, 2.4vw, 21px);
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--navy-900);
}

.page-home p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  margin: 0 0 14px;
}

.page-home .mono {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--grey);
}

.page-home .eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--navy-700);
  text-transform: none;
}

.page-home .eyebrow .mono {
  color: var(--teal);
}

/* ============ 首屏索引台 ============ */

.page-home .hero {
  padding: 26px 0 46px;
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 72%, var(--paper-2) 100%);
}

.page-home .hero__frame {
  display: grid;
  gap: 24px;
  border: var(--home-frame) solid var(--navy-900);
  background: var(--paper);
  box-shadow: var(--home-shadow);
  padding: 24px 20px 26px;
}

.page-home .hero__lead .breadcrumb {
  margin-bottom: 16px;
}

.page-home .hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.025em;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.1;
  margin: 6px 0 18px;
  color: var(--navy-900);
  max-width: 15ch;
}

.page-home .hero__intro {
  font-size: clamp(16px, 1.7vw, 18px);
  color: var(--ink);
  max-width: 46ch;
}

.page-home .hero__note {
  margin: 8px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-home .hero__media {
  margin: 0;
  border: 2px solid var(--navy-900);
}

.page-home .drawers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .drawer {
  display: flex;
}

.page-home .drawer__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  padding: 16px 16px 20px;
  border: 2px solid var(--navy-900);
  background: var(--paper);
  box-shadow: 4px 4px 0 rgba(11, 37, 69, .16);
  text-decoration: none;
  color: var(--ink);
  position: relative;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), background .22s var(--ease);
}

.page-home .drawer__link::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -2px;
  transform: translateY(-50%);
  width: 4px;
  height: 34px;
  background: var(--orange);
  opacity: 0;
  transition: opacity .22s var(--ease);
}

.page-home .drawer__link:hover,
.page-home .drawer__link:focus-visible {
  transform: translateY(-8px);
  background: var(--paper);
  box-shadow: 4px 12px 0 rgba(11, 37, 69, .16);
}

.page-home .drawer__link:hover::before,
.page-home .drawer__link:focus-visible::before {
  opacity: 1;
}

.page-home .drawer__no {
  display: inline-block;
  align-self: flex-start;
  padding: 3px 8px;
  background: var(--orange-soft);
  color: var(--navy-900);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-home .drawer__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--navy-900);
}

.page-home .drawer__desc {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--grey);
  flex: 1;
}

.page-home .drawer__go {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-500);
  letter-spacing: .02em;
}

/* ============ 服务范围速览 ============ */

.page-home .scope {
  padding: 52px 0 56px;
  background: var(--paper-2);
  border-top: 2px solid var(--navy-900);
}

.page-home .scope__head {
  max-width: 62ch;
  margin-bottom: 30px;
}

.page-home .scope__lead {
  color: var(--ink);
}

.page-home .scope__grid {
  display: grid;
  gap: 26px;
}

.page-home .scope__media {
  margin: 0;
  border: 2px solid var(--navy-900);
  background: var(--paper);
}

.page-home .cat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--navy-900);
}

.page-home .cat__link {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 10px;
  padding: 11px 8px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: var(--ink);
  transition: background .18s var(--ease), transform .18s var(--ease), border-color .18s var(--ease);
}

.page-home .cat__link:hover,
.page-home .cat__link:focus-visible {
  background: var(--paper);
  border-bottom-color: var(--orange);
  transform: translateX(4px);
}

.page-home .cat__no {
  font-size: 13px;
  color: var(--orange);
  font-weight: 700;
}

.page-home .cat__name {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 700;
  color: var(--navy-900);
}

.page-home .cat__sample {
  grid-column: 2;
  font-size: 12px;
  color: var(--grey);
}

/* ============ 两步定位 ============ */

.page-home .steps {
  padding: 52px 0 56px;
  background: var(--paper);
}

.page-home .steps__lead {
  max-width: 60ch;
  color: var(--grey);
}

.page-home .track {
  margin-top: 30px;
  border: 2px solid var(--navy-900);
  background: var(--paper);
  box-shadow: 4px 4px 0 rgba(11, 37, 69, .16);
  padding: 22px 18px 24px;
}

.page-home .track__list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-home .track__step {
  padding-left: 16px;
  border-left: 4px solid var(--navy-700);
}

.page-home .track__step:last-child {
  border-left-color: var(--orange);
}

.page-home .track__no {
  display: block;
  font-size: 12px;
  color: var(--teal);
  letter-spacing: .12em;
  margin-bottom: 6px;
}

.page-home .track__step p {
  margin: 0;
  font-size: 15px;
  color: var(--grey);
}

.page-home .track__arrow {
  display: block;
  width: 100%;
  max-width: 300px;
  height: 24px;
  color: var(--line);
  margin: 0 0 20px;
}

.page-home .metrics {
  display: grid;
  gap: 14px;
  margin: 0;
  padding-top: 20px;
  border-top: 2px dashed var(--line);
}

.page-home .metric dt {
  font-size: 12px;
  color: var(--grey);
  margin-bottom: 4px;
}

.page-home .metric dd {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--navy-900);
  font-weight: 700;
}

.page-home .metric__num {
  font-family: var(--font-mono);
  font-size: 26px;
  letter-spacing: -0.01em;
  color: var(--orange);
  margin-right: 4px;
}

/* ============ 客户场景 ============ */

.page-home .scenes {
  padding: 52px 0 56px;
  background: var(--paper-2);
  border-top: 2px solid var(--navy-900);
}

.page-home .scenes__lead {
  max-width: 58ch;
  color: var(--grey);
}

.page-home .scenes__media {
  margin: 26px 0 30px;
  border: 2px solid var(--navy-900);
  background: var(--paper);
}

.page-home .scene-grid {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--navy-900);
}

.page-home .scene {
  padding: 18px 0 20px;
  border-bottom: 1px solid var(--line);
}

.page-home .scene p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

/* ============ 版本节奏 ============ */

.page-home .cadence {
  padding: 52px 0 56px;
  background: var(--paper);
}

.page-home .cadence__grid {
  display: grid;
  gap: 28px;
}

.page-home .cadence__lead p {
  color: var(--ink);
}

.page-home .cadence__facts {
  list-style: none;
  margin: 20px 0 0;
  padding: 16px 0 0;
  border-top: 2px dashed var(--line);
  display: grid;
  gap: 10px;
}

.page-home .cadence__facts li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  font-size: 15px;
  color: var(--navy-900);
}

.page-home .cadence__facts .mono {
  flex: 0 0 46px;
  padding: 2px 0;
  color: var(--teal);
  font-size: 12px;
}

.page-home .cadence__media {
  margin: 0;
  border: 2px solid var(--navy-900);
  background: var(--paper-2);
}

/* ============ 合作入口 ============ */

.page-home .start {
  padding: 0 0 60px;
}

.page-home .start__panel {
  display: grid;
  gap: 26px;
  padding: 28px 20px 30px;
  background: var(--navy-900);
  border: 3px solid var(--navy-900);
  box-shadow: var(--hard-shadow);
  color: var(--paper);
}

.page-home .start__panel h2 {
  color: var(--paper);
}

.page-home .start__panel p {
  color: rgba(247, 243, 234, .86);
  max-width: 56ch;
}

.page-home .start__eyebrow {
  color: var(--orange-soft);
}

.page-home .start__eyebrow .mono {
  color: var(--teal);
}

.page-home .start__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-home .start__contact {
  margin: 0;
  padding-top: 22px;
  border-top: 2px solid rgba(199, 210, 222, .34);
  display: grid;
  gap: 14px;
}

.page-home .start__row dt {
  font-size: 12px;
  color: var(--teal);
  margin-bottom: 5px;
}

.page-home .start__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(247, 243, 234, .9);
}

.page-home .start__row a {
  color: var(--orange-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(245, 176, 117, .5);
}

.page-home .start__row a:hover,
.page-home .start__row a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ============ 响应式 ============ */

@media (min-width: 560px) {
  .page-home .cat__link {
    grid-template-columns: 40px minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 12px;
  }

  .page-home .cat__sample {
    grid-column: 3;
    font-size: 13px;
  }

  .page-home .metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-home .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }

  .page-home .start__panel {
    padding: 36px 32px 38px;
  }
}

@media (min-width: 720px) {
  .page-home .hero {
    padding: 34px 0 54px;
  }

  .page-home .hero__frame {
    padding: 30px 28px 32px;
  }

  .page-home .drawers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-home .drawer:nth-child(2) {
    margin-top: 18px;
  }

  .page-home .drawer:nth-child(3) {
    margin-top: 36px;
  }

  .page-home .track {
    padding: 28px 26px 30px;
  }

  .page-home .track__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }

  .page-home .start__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }

  .page-home .start__contact {
    padding-top: 0;
    border-top: 0;
    border-left: 2px solid rgba(199, 210, 222, .34);
    padding-left: 28px;
  }
}

@media (min-width: 900px) {
  .page-home .hero__frame {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 330px);
    grid-template-areas:
      "lead media"
      "drawers drawers";
    gap: 34px 44px;
    align-items: start;
  }

  .page-home .hero__lead {
    grid-area: lead;
  }

  .page-home .hero__media {
    grid-area: media;
  }

  .page-home .drawers {
    grid-area: drawers;
  }

  .page-home .scope__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 42px;
    align-items: start;
  }

  .page-home .scope__media {
    position: sticky;
    top: 120px;
  }

  .page-home .cadence__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 48px;
    align-items: start;
  }

  .page-home .scene-grid {
    column-gap: 44px;
  }
}

@media (min-width: 1080px) {
  .page-home .scene-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .drawer__link,
  .page-home .cat__link,
  .page-home .drawer__link::before {
    transition: none;
  }

  .page-home .drawer__link:hover,
  .page-home .drawer__link:focus-visible,
  .page-home .cat__link:hover,
  .page-home .cat__link:focus-visible {
    transform: none;
  }
}
<<<END>>>