.page-home {
  --ph-gap: clamp(16px, 3vw, 28px);
  --ph-pad: clamp(44px, 6.5vw, 88px);
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-home .mono {
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

.page-home .breadcrumbs {
  padding: 18px 0 6px;
}

/* ============ 首屏 ============ */
.page-home .hero {
  padding: 2px 0 clamp(26px, 4vw, 52px);
}

.page-home .hero__grid {
  display: grid;
  gap: var(--ph-gap);
}

.page-home .hero__clay {
  position: relative;
  background: var(--clay);
  color: #fff;
  padding: clamp(28px, 5vw, 54px) clamp(22px, 4vw, 44px) clamp(58px, 8vw, 92px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 40px), 0 100%);
}

.page-home .hero__kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: #FFE2D8;
}

.page-home .hero__title {
  margin: 0 0 18px;
  font-size: clamp(30px, 7.4vw, 56px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-home .hero__lede {
  margin: 0 0 26px;
  max-width: 30ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.7;
  color: #FFEDE6;
}

.page-home .hero__cta {
  min-height: 48px;
}

.page-home .hero__media {
  margin: 0;
}

.page-home .hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: 45fr 55fr;
    align-items: stretch;
    gap: 22px;
  }

  .page-home .hero__clay {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .page-home .hero__media {
    min-height: 420px;
  }
}

/* ============ 人群索引 ============ */
.page-home .crowd {
  padding: var(--ph-pad) 0 0;
  scroll-margin-top: 96px;
}

.page-home .crowd__head {
  display: grid;
  gap: 12px;
  margin-bottom: 22px;
}

.page-home .crowd__title {
  margin: 0;
  font-size: clamp(26px, 5.2vw, 46px);
  line-height: 1.08;
}

.page-home .crowd__sub {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

.page-home .crowd__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.page-home .crowd__texture {
  height: clamp(56px, 8vw, 84px);
  overflow: hidden;
  border-top: var(--line);
  border-bottom: var(--line);
  margin-bottom: 26px;
}

.page-home .crowd__texture img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-home .crowd__scroller {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  padding: 6px 4px 22px;
  -webkit-overflow-scrolling: touch;
}

.page-home .crowd-card {
  position: relative;
  flex: 0 0 auto;
  width: min(80vw, 300px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 22px;
  background: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-home .crowd-card:hover {
  transform: translateY(-4px);
  box-shadow: 8px 8px 0 var(--ink);
}

.page-home .crowd-card > .specimen-tag {
  position: static;
  align-self: flex-start;
}

.page-home .crowd-card__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink);
}

.page-home .crowd-card .card__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
}

.page-home .crowd-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--clay);
  text-decoration: none;
  border-bottom: 2px solid currentColor;
  padding-bottom: 2px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.page-home .crowd-card__link:hover {
  color: var(--green-deep);
}

/* ============ 两条二级路径 ============ */
.page-home .paths {
  padding: var(--ph-pad) 0;
}

.page-home .paths__title {
  margin: 0 0 12px;
  font-size: clamp(26px, 5vw, 44px);
  line-height: 1.08;
}

.page-home .paths__lede {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

.page-home .paths__grid {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.page-home .path-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 26px;
  background: #fff;
  border: var(--line);
  border-top-width: 10px;
  box-shadow: var(--shadow-hard);
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-home .path-card--download {
  border-top-color: var(--clay);
}

.page-home .path-card--switch {
  border-top-color: var(--green);
}

.page-home .path-card:hover {
  transform: translateY(-4px);
  box-shadow: 9px 9px 0 var(--ink);
}

.page-home .path-card > .specimen-tag {
  position: static;
  align-self: flex-start;
}

.page-home .path-card__title {
  margin: 2px 0 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-home .path-card__body {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--grey);
}

.page-home .path-card__spec {
  display: grid;
  gap: 9px;
  margin: 8px 0 0;
  padding-top: 16px;
  border-top: 2px dashed rgba(22, 23, 26, 0.22);
}

.page-home .path-card__spec > div {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.page-home .path-card__spec dt {
  flex: 0 0 78px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

.page-home .path-card__spec dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
}

.page-home .path-card__go {
  margin-top: auto;
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--clay);
}

.page-home .path-card--switch .path-card__go {
  color: var(--green-deep);
}

@media (min-width: 860px) {
  .page-home .paths__grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

/* ============ 三步切换 ============ */
.page-home .switch {
  padding: var(--ph-pad) 0;
  background: var(--ink);
  color: var(--lime);
}

.page-home .switch .display {
  color: var(--lime);
}

.page-home .switch__grid {
  display: grid;
  gap: 34px;
}

.page-home .switch__intro {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-home .switch__lede {
  margin: 0;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 234, 0.74);
}

.page-home .switch__media {
  margin: 6px 0 0;
  border: 3px solid var(--lime);
}

.page-home .switch__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-home .switch__body {
  display: grid;
  gap: 10px;
  align-content: start;
}

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

.page-home .step {
  position: relative;
  display: block;
  width: 100%;
  text-align: left;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink);
  background: #fff;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-soft);
  padding: 18px 18px 18px 74px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

.page-home .step[aria-pressed="false"] {
  background: transparent;
  border-color: rgba(244, 241, 234, 0.32);
  box-shadow: none;
  color: rgba(244, 241, 234, 0.72);
}

.page-home .step[aria-pressed="false"] .step__body {
  color: rgba(244, 241, 234, 0.6);
}

.page-home .step__index {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 56px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  background: var(--whistle);
  color: var(--ink);
  border-right: 3px solid var(--ink);
}

.page-home .step[aria-pressed="false"] .step__index {
  background: transparent;
  color: rgba(244, 241, 234, 0.6);
  border-right-color: rgba(244, 241, 234, 0.32);
}

.page-home .step__title {
  display: block;
  margin-bottom: 5px;
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-home .step__body {
  display: block;
  font-size: 14.5px;
  line-height: 1.72;
}

.page-home .switch__diagram {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 22px auto 0;
}

@media (min-width: 900px) {
  .page-home .switch__grid {
    grid-template-columns: 5fr 7fr;
    gap: 44px;
    align-items: start;
  }
}

/* ============ 版本时间轴 ============ */
.page-home .versions {
  padding: var(--ph-pad) 0;
}

.page-home .versions__grid {
  display: grid;
  gap: 34px;
}

.page-home .versions__side {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-home .versions__lede {
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--grey);
}

.page-home .versions__figure {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  margin-top: 10px;
  border: 3px solid var(--ink);
  box-shadow: var(--shadow-hard);
}

.page-home .versions__timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  border-left: 3px solid rgba(22, 23, 26, 0.2);
  display: grid;
  gap: 18px;
}

.page-home .timeline__item {
  position: relative;
  padding: 16px 18px 18px;
  background: #fff;
  border: 2px solid rgba(22, 23, 26, 0.18);
  border-left: 6px solid var(--whistle);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.page-home .timeline__item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 24px;
  width: 12px;
  height: 12px;
  background: var(--whistle);
  border: 3px solid var(--ink);
  transform: rotate(45deg);
}

.page-home .timeline__item:hover {
  transform: translateY(-4px);
  border-left-color: var(--clay);
  box-shadow: 6px 6px 0 var(--ink);
}

.page-home .timeline__when {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--grey);
}

.page-home .timeline__ver {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-home .timeline__dev {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--green-deep);
}

.page-home .timeline__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  opacity: 0.78;
  transition: opacity 0.2s ease;
}

.page-home .timeline__item:hover .timeline__note {
  opacity: 1;
}

@media (min-width: 960px) {
  .page-home .versions__grid {
    grid-template-columns: 4fr 8fr;
    gap: 48px;
    align-items: start;
  }
}

/* ============ 联系条 ============ */
.page-home .reach {
  padding: var(--ph-pad) 0;
  background: var(--green-deep);
  color: var(--lime);
  clip-path: polygon(0 0, 100% 42px, 100% 100%, 0 100%);
}

.page-home .reach .display {
  color: var(--lime);
}

.page-home .reach__title {
  margin: 0 0 12px;
  font-size: clamp(26px, 5vw, 44px);
  line-height: 1.08;
}

.page-home .reach__lede {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(244, 241, 234, 0.78);
}

.page-home .reach__grid {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-home .reach__item {
  padding: 16px 18px 18px;
  background: rgba(244, 241, 234, 0.06);
  border: 2px solid rgba(244, 241, 234, 0.24);
  border-top: 8px solid var(--clay);
}

.page-home .reach__item:nth-child(2) {
  border-top-color: var(--orange);
}

.page-home .reach__item:nth-child(3) {
  border-top-color: var(--whistle);
}

.page-home .reach__item:nth-child(4) {
  border-top-color: var(--cyan);
}

.page-home .reach__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: rgba(244, 241, 234, 0.68);
}

.page-home .reach__value {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.6;
  font-weight: 700;
  word-break: break-word;
}

.page-home .reach__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.66);
}

.page-home .copy-chip {
  min-height: 44px;
}

.page-home .reach__foot {
  margin: 30px 0 0;
  padding-top: 18px;
  border-top: 2px solid rgba(244, 241, 234, 0.22);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: rgba(244, 241, 234, 0.7);
}

.page-home .reach__more {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

@media (min-width: 1040px) {
  .page-home .reach__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ============ 入场动效 ============ */
@media (prefers-reduced-motion: no-preference) {
  .page-home .hero__clay {
    animation: ph-rise 0.42s ease both;
  }

  .page-home .hero__media {
    animation: ph-rise 0.42s ease 0.1s both;
  }
}

@keyframes ph-rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .crowd__scroller {
    scroll-snap-type: none;
  }

  .page-home .crowd-card,
  .page-home .path-card,
  .page-home .timeline__item {
    transition: none;
  }
}
</main>