.page-home {
  --home-rail-w: 128px;
  --home-offset: 18px;
  --home-pad: clamp(22px, 3.4vw, 36px);
  --home-gap: clamp(52px, 7vw, 96px);

  padding-block: clamp(20px, 3vw, 36px) clamp(56px, 8vw, 96px);
  font-family: var(--font-sans);
  color: var(--ink);
}

.page-home__crumbs {
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

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

.page-home .home-stack {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
  min-width: 0;
}

/* 左侧刻度索引 */
.page-home .home-rail {
  display: none;
}

.page-home .home-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 12px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 18px;
}

.page-home .home-rail__item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--grey);
}

.page-home .home-rail__tick {
  display: block;
  width: 10px;
  height: 1px;
  background: var(--line-strong);
}

/* 首屏框景 */
.page-home .home-hero {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: clamp(24px, 3.6vw, 48px);
  box-shadow: var(--shadow-stack);
}

.page-home .home-hero__corner {
  position: absolute;
  width: 20px;
  height: 20px;
  border: 1px solid var(--indigo);
  pointer-events: none;
}

.page-home .home-hero__corner--tl { top: 10px; left: 10px; border-right: 0; border-bottom: 0; }
.page-home .home-hero__corner--tr { top: 10px; right: 10px; border-left: 0; border-bottom: 0; }
.page-home .home-hero__corner--bl { bottom: 10px; left: 10px; border-right: 0; border-top: 0; }
.page-home .home-hero__corner--br { bottom: 10px; right: 10px; border-left: 0; border-top: 0; }

.page-home .home-hero__scale {
  position: absolute;
  left: 24px;
  top: 32%;
  display: none;
  flex-direction: column;
  gap: 11px;
  pointer-events: none;
}

.page-home .home-hero__scale span {
  display: block;
  width: 7px;
  height: 1px;
  background: var(--line-strong);
}

.page-home .home-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.page-home .home-hero__title {
  margin: 14px 0 0;
  font-size: clamp(28px, 5.1vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--indigo);
}

.page-home .home-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--ink);
}

.page-home .home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-home .home-hero__status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--mist);
}

.page-home .home-hero__status .status-chip__text {
  font-size: 13px;
  color: var(--indigo);
  letter-spacing: 0.01em;
}

.page-home .home-hero__media {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  aspect-ratio: 16 / 9;
}

/* 图片基础约束 */
.page-home .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* 堆叠画板 */
.page-home .home-panel {
  position: relative;
  min-width: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--home-pad);
}

.page-home .home-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 84px;
  height: 3px;
  background: var(--saffron);
  border-top-left-radius: var(--radius);
}

/* 版本主轴 */
.page-home .home-axis__head {
  max-width: 62ch;
}

.page-home .home-axis__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--grey);
}

.page-home .home-axis__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-home .version-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  transition: border-color 0.2s var(--ease-panel), box-shadow 0.2s var(--ease-panel), transform 0.24s var(--ease-panel);
}

.page-home .version-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-stack);
  transform: translateY(-3px);
}

.page-home .version-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-home .version-card__no {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--indigo);
}

.page-home .version-card__no::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--saffron);
  vertical-align: middle;
}

.page-home .version-card__time {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--grey);
  text-align: right;
}

.page-home .version-card__title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--indigo);
}

.page-home .version-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--grey);
}

.page-home .version-card__fields {
  margin: 2px 0 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 6px;
}

.page-home .version-card__row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
}

.page-home .version-card__row dt {
  flex: 0 0 64px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--grey);
}

.page-home .version-card__row dd {
  margin: 0;
  color: var(--ink);
}

.page-home .version-card .tag {
  align-self: flex-start;
  margin-top: auto;
}

.page-home .home-axis__texture {
  margin: 24px 0 0;
  max-width: 420px;
  aspect-ratio: 4 / 3;
}

/* 帮助入口 */
.page-home .home-help__lead {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--grey);
}

.page-home .home-help__tags {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-home .home-help__tags a {
  display: inline-block;
  text-decoration: none;
  transition: border-color 0.18s var(--ease-panel), color 0.18s var(--ease-panel), background-color 0.18s var(--ease-panel);
}

.page-home .home-help__tags a:hover {
  border-color: var(--link);
  color: var(--link);
  background: var(--mist);
}

.page-home .home-help__note {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--grey);
}

/* 移动端双栏 */
.page-home .home-mobile__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-home .home-mobile__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--grey);
}

.page-home .home-mobile__points {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .home-mobile__points li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-home .home-mobile__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--turquoise);
}

.page-home .home-mobile__media {
  margin: 0;
  max-width: 340px;
  aspect-ratio: 4 / 5;
}

.page-home .home-mobile__cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
  padding-bottom: 22px;
}

.page-home .mobile-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.page-home .mobile-card:nth-child(2) {
  transform: translateY(14px);
}

.page-home .mobile-card .mobile-card__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-home .mobile-card h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--indigo);
}

.page-home .mobile-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--grey);
}

.page-home .mobile-card .tag {
  align-self: flex-start;
  margin-top: auto;
}

/* 速度对比 */
.page-home .home-speed__lead {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--grey);
}

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

.page-home .home-speed__figures {
  display: grid;
  gap: 18px;
}

.page-home .speed-figure {
  display: grid;
  gap: 6px;
}

.page-home .speed-figure__value {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--indigo);
}

.page-home .speed-figure__label {
  font-size: 13px;
  color: var(--grey);
}

.page-home .speed-figure__bar {
  position: relative;
  display: block;
  height: 8px;
  border-radius: 2px;
  background: var(--mist);
  overflow: hidden;
}

.page-home .speed-figure__bar::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
}

.page-home .speed-figure__bar--old::after {
  width: 100%;
  background: repeating-linear-gradient(45deg, rgba(107, 122, 144, 0.55) 0 6px, rgba(107, 122, 144, 0.28) 6px 12px);
}

.page-home .speed-figure__bar--new::after {
  width: 70.6%;
  background: var(--indigo);
}

.page-home .home-speed__delta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--grey);
}

.page-home .home-speed__delta .mono {
  font-size: 16px;
  font-weight: 700;
  color: var(--saffron);
}

.page-home .home-speed__media {
  margin: 0;
  aspect-ratio: 2 / 1;
}

/* 正版获取与适配 */
.page-home .home-legit__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 26px;
}

.page-home .legit-item {
  padding-top: 16px;
  border-top: 2px solid var(--indigo);
}

.page-home .legit-item h3 {
  margin: 10px 0 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--indigo);
}

.page-home .legit-item p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--grey);
}

/* 数据带 */
.page-home .home-figures {
  padding: clamp(24px, 3.4vw, 40px) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .home-figures__head {
  max-width: 62ch;
  margin-bottom: 26px;
}

.page-home .home-figures__lead {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--grey);
}

.page-home .home-figures__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 16px;
}

.page-home .home-figures__value {
  display: block;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--indigo);
}

.page-home .home-figures__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--grey);
}

/* 提交通道 */
.page-home .home-cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--indigo);
  color: var(--white);
  padding: clamp(28px, 4vw, 48px);
  box-shadow: var(--shadow-stack);
}

.page-home .home-cta::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--indigo) 0 20%,
    var(--turquoise) 20% 40%,
    var(--amber) 40% 60%,
    var(--saffron) 60% 80%,
    var(--white) 80% 100%
  );
}

.page-home .home-cta__inner {
  max-width: 68ch;
}

.page-home .eyebrow--invert {
  color: rgba(255, 255, 255, 0.72);
}

.page-home .home-cta h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-home .home-cta p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

.page-home .home-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
  margin-bottom: 8px;
}

.page-home .home-cta .btn--accent {
  background: var(--saffron);
  border-color: var(--saffron);
  color: var(--white);
  transition: filter 0.18s var(--ease-panel);
}

.page-home .home-cta .btn--accent:hover {
  filter: brightness(1.12);
}

.page-home .home-cta .btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.42);
}

.page-home .home-cta .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.76);
}

/* 焦点态 */
.page-home a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 2px;
}

.page-home .home-cta a:focus-visible {
  outline-color: var(--amber);
}

/* 平板及以上 */
@media (min-width: 768px) {
  .page-home .home-stack > .home-panel:nth-child(even) {
    margin-left: var(--home-offset);
  }

  .page-home .home-stack > .home-panel:nth-child(odd) {
    margin-right: var(--home-offset);
  }

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

  .page-home .home-hero__inner {
    padding-left: 28px;
  }

  .page-home .home-legit__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-home .home-figures__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 宽屏两栏与三栏 */
@media (min-width: 860px) {
  .page-home .home-axis__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-home .home-mobile__layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 36px;
    align-items: start;
  }

  .page-home .home-mobile__media {
    max-width: 100%;
  }

  .page-home .home-mobile__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    max-width: 760px;
    padding-bottom: 26px;
  }

  .page-home .mobile-card:nth-child(2) {
    transform: translateY(20px);
  }

  .page-home .mobile-card {
    padding: 20px 18px;
  }

  .page-home .home-speed__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
    align-items: center;
  }
}

/* 桌面：左侧索引列 */
@media (min-width: 1024px) {
  .page-home .home-shell {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    gap: clamp(24px, 3vw, 44px);
  }

  .page-home .home-rail {
    display: block;
    position: sticky;
    top: 104px;
    padding-top: 8px;
  }
}

@media (min-width: 1080px) {
  .page-home .home-figures__list {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .version-card,
  .page-home .home-help__tags a,
  .page-home .home-cta .btn--accent {
    transition: none;
  }

  .page-home .version-card:hover {
    transform: none;
  }

  .page-home .mobile-card:nth-child(2) {
    transform: none;
  }
}