.page-home {
  --home-gap: clamp(1rem, 2.4vw, 2.5rem);
  --home-legacy: var(--ice);
  --home-new: var(--electric);
  font-family: var(--font-body);
  color: var(--cream);
}

/* ---------- 首屏：左索引树 + 右结论区 ---------- */

.page-home .hero {
  position: relative;
  padding-block: clamp(1.5rem, 4vw, 3rem) clamp(2.5rem, 6vw, 4.5rem);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 7rem 100%;
  opacity: 0.4;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 85%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 85%);
}

.page-home .hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
  align-items: start;
}

.page-home .hero__grid > .breadcrumbs {
  order: 1;
  grid-column: 1;
}

.page-home .hero__main {
  order: 2;
  grid-column: 1;
  min-width: 0;
}

.page-home .hero__index {
  order: 3;
  grid-column: 1;
  min-width: 0;
}

/* ---------- 索引树 ---------- */

.page-home .index-tree {
  padding: 1.05rem 1.05rem 1.2rem;
}

.page-home .index-tree__head {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-home .index-tree__group {
  border-top: 1px solid var(--line-soft);
}

.page-home .index-tree__group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.62rem 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 0.94rem;
  font-weight: 700;
  color: var(--cream);
}

.page-home .index-tree__group summary::-webkit-details-marker {
  display: none;
}

.page-home .index-tree__group summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--cyan);
}

.page-home .index-tree__group[open] summary::after {
  content: "–";
}

.page-home .index-tree__count {
  margin-left: auto;
  font-size: 0.72rem;
  color: var(--rock);
}

.page-home .index-tree__group ul {
  list-style: none;
  margin: 0 0 0.7rem;
  padding: 0 0 0 0.15rem;
  border-left: 1px solid var(--line-soft);
  display: grid;
  gap: 0.2rem;
}

.page-home .index-tree__group li {
  padding-left: 0.7rem;
}

.page-home .index-tree__group a {
  display: block;
  padding: 0.16rem 0;
  color: var(--ice);
  font-size: 0.86rem;
  line-height: 1.55;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.page-home .index-tree__group a:hover,
.page-home .index-tree__group a:focus-visible {
  color: var(--cyan);
}

.page-home .index-tree__fig {
  margin: 1.1rem 0 0;
}

/* ---------- 首屏文案区 ---------- */

.page-home h1 {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 7.4vw, 4.9rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
  color: var(--cream);
}

.page-home .hero__lede {
  margin: 1.15rem 0 0;
  max-width: 36em;
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  line-height: 1.82;
  color: rgba(242, 237, 227, 0.84);
}

.page-home .hero__facts {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 1.15rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem 1.3rem;
}

.page-home .hero__facts li {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
}

.page-home .hero__facts .data {
  font-size: clamp(1.3rem, 3.2vw, 1.95rem);
  font-weight: 600;
  color: var(--amber);
  line-height: 1.1;
}

.page-home .hero__facts li > span:last-child {
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--ice);
}

.page-home .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.55rem;
}

/* ---------- 快捷筛选 ---------- */

.page-home .quickfilters {
  margin-top: 1.9rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--line-soft);
}

.page-home .quickfilters__label {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--rock);
}

.page-home .quickfilters ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-home .quickfilters a.tag {
  text-decoration: none;
  white-space: nowrap;
}

.page-home .quickfilters a.tag:hover,
.page-home .quickfilters a.tag:focus-visible {
  background: var(--amber);
  color: var(--ink);
}

/* ---------- 版本对照 ---------- */

.page-home .compare {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 42, 63, 0.55), transparent 62%);
}

.page-home .compare__head {
  max-width: 46rem;
}

.page-home h2 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-home .compare__head p {
  margin: 0.95rem 0 0;
  max-width: 38em;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(242, 237, 227, 0.8);
}

.page-home .compare__fig {
  margin: clamp(1.4rem, 3vw, 2.2rem) 0 0;
}

.page-home .compare__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-home .vcard {
  position: relative;
  padding: 1.15rem 1.15rem 1.3rem;
  background: linear-gradient(180deg, rgba(18, 42, 63, 0.94), rgba(11, 27, 43, 0.94));
  border: 1px solid var(--line);
  clip-path: var(--radius-cut);
  box-shadow: var(--shadow-deep);
  min-width: 0;
}

.page-home .vcard::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
}

.page-home .vcard--old::before {
  background: var(--home-legacy);
}

.page-home .vcard--new::before {
  background: var(--home-new);
}

.page-home .vcard__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.8rem;
}

.page-home .vcard__name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
}

.page-home .vcard--old .vcard__name {
  color: var(--home-legacy);
}

.page-home .vcard--new .vcard__name {
  color: var(--home-new);
}

.page-home .vcard__ver {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1;
}

.page-home .vcard--old .vcard__ver {
  color: var(--home-legacy);
}

.page-home .vcard--new .vcard__ver {
  color: var(--home-new);
}

.page-home .vcard dl {
  margin: 0;
  display: grid;
  gap: 0.1rem;
}

.page-home .vcard__row {
  display: grid;
  grid-template-columns: minmax(5.5rem, 7.5rem) minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
  padding: 0.5rem 0;
  border-top: 1px solid var(--line-soft);
}

.page-home .vcard__row dt {
  font-size: 0.8rem;
  color: var(--rock);
}

.page-home .vcard__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.55;
  color: var(--cream);
  overflow-wrap: anywhere;
}

.page-home .vcard__row--diff {
  border-top-color: var(--amber);
}

.page-home .vcard__row--diff dt {
  color: var(--amber);
}

.page-home .compare__tail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem 1.1rem;
  margin: clamp(1.3rem, 3vw, 1.9rem) 0 0;
  font-size: 0.88rem;
  color: var(--ice);
}

/* ---------- 加载速度 ---------- */

.page-home .speed {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line-soft);
}

.page-home .speed__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 3.5vw, 2.8rem);
  align-items: center;
}

.page-home .speed__intro {
  margin: 0.9rem 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(242, 237, 227, 0.8);
}

.page-home .speed__metrics {
  list-style: none;
  margin: 1.35rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1rem;
}

.page-home .speed__metrics li {
  padding-left: 0.7rem;
  border-left: 2px solid var(--line-strong);
  min-width: 0;
}

.page-home .speed__metrics li:nth-child(odd) {
  border-left-color: var(--cyan);
}

.page-home .speed__metrics b {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--cream);
}

.page-home .speed__metrics span {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.76rem;
  line-height: 1.55;
  color: var(--ice);
}

.page-home .speed__note {
  margin: 1.2rem 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--rock);
}

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

/* ---------- 更新节奏与产品线 ---------- */

.page-home .pulse {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(79, 122, 99, 0.1), transparent 60%);
}

.page-home .pulse__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-home .stream {
  list-style: none;
  margin: 1.3rem 0 0;
  padding: 0;
}

.page-home .stream li {
  position: relative;
  padding: 1rem 0 1rem 1.15rem;
  border-top: 1px solid var(--line-soft);
}

.page-home .stream li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.45rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

.page-home .stream__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-home .stream__title {
  margin: 0.4rem 0 0;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--cream);
}

.page-home .stream__desc {
  margin: 0.35rem 0 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: rgba(242, 237, 227, 0.72);
}

.page-home .pulse__more {
  margin: 1.3rem 0 0;
}

.page-home .pulse__lines {
  padding: 1.2rem 1.1rem 1.35rem;
  border: 1px solid var(--line);
  background: rgba(18, 42, 63, 0.58);
  clip-path: var(--radius-cut);
  min-width: 0;
}

.page-home .pulse__lines h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-home .pulse__lines-intro {
  margin: 0.55rem 0 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: rgba(242, 237, 227, 0.74);
}

.page-home .lines {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-home .lines li {
  padding: 0.6rem 0.75rem;
  border-left: 3px solid var(--moss);
  background: rgba(11, 27, 43, 0.55);
}

.page-home .lines li:nth-child(1) {
  border-left-color: var(--amber);
}

.page-home .lines li:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-home .lines li:nth-child(3) {
  border-left-color: var(--moss);
}

.page-home .lines li:nth-child(4) {
  border-left-color: var(--clay);
}

.page-home .lines__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--cream);
}

.page-home .lines__desc {
  margin: 0.2rem 0 0;
  font-size: 0.8rem;
  line-height: 1.65;
  color: var(--ice);
}

/* ---------- 纠错与合作 ---------- */

.page-home .engage {
  padding-block: clamp(2.5rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line-soft);
}

.page-home .engage__head {
  max-width: 44rem;
}

.page-home .engage__head p {
  margin: 0.95rem 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(242, 237, 227, 0.8);
}

.page-home .engage__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-home .engage__card {
  padding: 1.15rem 1.1rem 1.25rem;
  border: 1px solid var(--line);
  background: rgba(18, 42, 63, 0.55);
  clip-path: var(--radius-cut);
  min-width: 0;
}

.page-home .engage__tag {
  display: inline-block;
  margin: 0 0 0.7rem;
}

.page-home .engage__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 800;
  line-height: 1.45;
  color: var(--cream);
}

.page-home .engage__card p {
  margin: 0.55rem 0 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: rgba(242, 237, 227, 0.74);
}

.page-home .engage__link {
  display: inline-block;
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 232, 208, 0.4);
  padding-bottom: 0.15rem;
}

.page-home .engage__link:hover,
.page-home .engage__link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 页尾引导 ---------- */

.page-home .closer {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
}

.page-home .closer__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-home .closer::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11, 27, 43, 0.95) 0%, rgba(11, 27, 43, 0.76) 58%, rgba(11, 27, 43, 0.34) 100%);
}

.page-home .closer__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(3rem, 8vw, 5.5rem);
}

.page-home .closer__copy {
  max-width: 36rem;
}

.page-home .closer__copy h2 {
  margin: 0;
}

.page-home .closer__copy p {
  margin: 0.9rem 0 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(242, 237, 227, 0.82);
}

.page-home .closer__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

/* ---------- 响应式 ---------- */

@media (min-width: 40rem) {
  .page-home .hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 52rem) {
  .page-home .compare__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

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

@media (min-width: 60rem) {
  .page-home .speed__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  }

  .page-home .pulse__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 62rem) {
  .page-home .hero__grid {
    grid-template-columns: minmax(15rem, 19rem) minmax(0, 1fr);
    column-gap: clamp(1.5rem, 3.5vw, 3.5rem);
  }

  .page-home .hero__grid > .breadcrumbs {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .page-home .hero__index {
    order: 0;
    grid-column: 1;
    grid-row: 2;
    position: sticky;
    top: 5.5rem;
  }

  .page-home .hero__main {
    order: 0;
    grid-column: 2;
    grid-row: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}