.page-home {
  --home-figure-radius: 0;
  position: relative;
  overflow-x: clip;
  color: var(--cream);
  background:
    radial-gradient(120% 70% at 88% -8%, rgba(155, 229, 100, 0.11), transparent 62%),
    var(--ink);
  padding-bottom: clamp(3rem, 6vw, 5.5rem);
}

.page-home::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: min(1200px, 118vh);
  background-image:
    linear-gradient(to right, rgba(28, 59, 46, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 59, 46, 0.55) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent);
  pointer-events: none;
  z-index: 0;
}

.page-home img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-home :focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 开机区 ---------- */
.page-home .boot {
  position: relative;
  z-index: 1;
  padding-top: clamp(5.5rem, 9vw, 8rem);
}

.page-home .boot__inner {
  display: grid;
  gap: 2rem;
}

.page-home .boot__status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin: 0;
  padding: 0.4rem 0.9rem 0.4rem 0.65rem;
  border: 1px solid rgba(155, 229, 100, 0.65);
  border-radius: var(--radius-pill);
  background: rgba(155, 229, 100, 0.07);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.page-home .boot__signal {
  flex: none;
  color: var(--lime);
}

.page-home .boot__status-sep {
  color: var(--clay);
}

.page-home .boot__title {
  margin: 1.15rem 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--cream);
}

.page-home .boot__title em {
  font-style: normal;
  color: var(--lime);
}

.page-home .boot__lede {
  margin: 1.2rem 0 0;
  max-width: 33em;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .boot__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-home .boot__note {
  margin: 1rem 0 0;
  max-width: 34em;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--clay);
}

.page-home .boot__figure {
  position: relative;
  margin: 0;
}

.page-home .boot__figure img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border: 1px solid var(--line);
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 95%);
  filter: saturate(0.82) contrast(1.06) brightness(0.86);
}

.page-home .boot__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(155, 229, 100, 0.07) 0,
    rgba(155, 229, 100, 0.07) 1px,
    transparent 1px,
    transparent 5px
  );
  pointer-events: none;
}

.page-home .boot__readouts {
  display: grid;
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.page-home .readout {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.page-home .readout__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4.2vw, 2.15rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.page-home .readout__unit {
  margin-left: 0.2rem;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--stone);
}

.page-home .readout__label {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 主体分栏 ---------- */
.page-home .home-body {
  position: relative;
  z-index: 1;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.page-home .rail {
  margin-bottom: 1.5rem;
}

.page-home .rail__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.5rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-home .rail__list::-webkit-scrollbar {
  display: none;
}

.page-home .rail__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--stone);
  font-size: 0.8rem;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-home .rail__link:hover {
  color: var(--lime);
  border-color: rgba(155, 229, 100, 0.5);
}

.page-home .rail__link[aria-current="true"] {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-home .rail__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--clay);
}

.page-home .rail__link[aria-current="true"] .rail__num {
  color: rgba(7, 19, 15, 0.65);
}

.page-home .stream {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 6.5vw, 5.5rem);
}

.page-home .home-sec {
  scroll-margin-top: 7rem;
}

.page-home .home-sec__head {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.page-home .home-sec__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--signal);
}

.page-home .home-sec h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.6vw, 2.2rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-home .home-sec__lede {
  margin: 0;
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--stone);
}

/* ---------- 步骤 ---------- */
.page-home .steps {
  display: grid;
  gap: 1.75rem;
}

.page-home .steps__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-home .step {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-home .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-home .step__title {
  margin: 0.55rem 0 0;
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--cream);
}

.page-home .step__text {
  margin: 0.45rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .step__more {
  margin-top: 0.75rem;
  padding-left: 0.85rem;
  border-left: 1px solid var(--line);
}

.page-home .step__more summary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--lime);
}

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

.page-home .step__more summary::after {
  content: "+";
  font-size: 0.85rem;
}

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

.page-home .step__more p {
  margin: 0.6rem 0 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--stone);
}

/* ---------- 图片容器 ---------- */
.page-home .fig {
  margin: 0;
  position: relative;
}

.page-home .fig img {
  width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--home-figure-radius);
}

.page-home .fig--tall img {
  aspect-ratio: 3 / 4;
}

.page-home .fig--wide img {
  aspect-ratio: 3 / 2;
}

.page-home .fig__cap {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--clay);
}

/* ---------- 版本对照 ---------- */
.page-home .compare__stage {
  position: relative;
  padding: 1.35rem 1.1rem 1.6rem;
  background: linear-gradient(158deg, rgba(14, 35, 27, 0.96), rgba(7, 19, 15, 0.7));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-home .switch {
  position: relative;
}

.page-home .switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}

.page-home .switch__labels {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(7, 19, 15, 0.65);
}

.page-home .switch__label {
  padding: 0.42rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--stone);
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.page-home #ver-app:checked ~ .switch__labels .switch__label[for="ver-app"],
.page-home #ver-legacy:checked ~ .switch__labels .switch__label[for="ver-legacy"] {
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.page-home #ver-app:focus-visible ~ .switch__labels .switch__label[for="ver-app"],
.page-home #ver-legacy:focus-visible ~ .switch__labels .switch__label[for="ver-legacy"] {
  outline: 2px solid var(--cream);
  outline-offset: 2px;
}

.page-home .switch__panels {
  margin-top: 1.35rem;
}

.page-home .switch__panel {
  display: none;
}

.page-home #ver-app:checked ~ .switch__panels .switch__panel--app,
.page-home #ver-legacy:checked ~ .switch__panels .switch__panel--legacy {
  display: block;
}

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

.page-home .panel__row {
  display: grid;
  gap: 0.2rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}

.page-home .panel__term {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-home .panel__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--cream);
}

.page-home .compare__fig {
  margin-top: 1.5rem;
}

/* ---------- 同屏读数 ---------- */
.page-home .board {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-home .board__lead {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-home .board__big {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3.2rem, 11vw, 5.5rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-home .board__leadtext {
  margin: 0;
  max-width: 26em;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-home .board__grid {
  display: grid;
  gap: 1rem;
}

.page-home .board__cell {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.15rem;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color var(--ease);
}

.page-home .board__cell::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(155, 229, 100, 0.14), transparent);
  transform: translateY(-100%);
  transition: transform 420ms ease;
  pointer-events: none;
}

.page-home .board__cell:hover {
  border-color: rgba(155, 229, 100, 0.45);
}

.page-home .board__cell:hover::after {
  transform: translateY(100%);
}

.page-home .board__title {
  margin: 0.15rem 0 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-home .board__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .board__note {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--clay);
}

.page-home .board__meter {
  display: flex;
  gap: 2px;
  height: 8px;
  margin-top: 0.2rem;
}

.page-home .board__meter span:first-child {
  flex: 58;
  background: rgba(155, 229, 100, 0.72);
}

.page-home .board__meter span:last-child {
  flex: 42;
  background: var(--clay);
}

.page-home .board__cell .tag {
  align-self: flex-start;
}

/* ---------- 回看与导出 ---------- */
.page-home .replay {
  display: grid;
  gap: 1.75rem;
}

.page-home .replay__text {
  margin: 0;
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--stone);
}

.page-home .formats {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .format {
  display: grid;
  grid-template-columns: 4.2rem minmax(0, 1fr);
  gap: 0.9rem;
  align-items: baseline;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
}

.page-home .format:last-child {
  border-bottom: 1px solid var(--line);
}

.page-home .format__code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-home .format__desc {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-home .replay__note {
  margin: 1.35rem 0 0;
  max-width: 32em;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .replay__body .btn {
  margin-top: 1.35rem;
}

/* ---------- 下一步 ---------- */
.page-home .next__grid {
  display: grid;
  gap: 1rem;
}

.page-home .next__card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem 1.2rem 1.35rem;
  background: rgba(14, 35, 27, 0.62);
  border: 1px solid var(--line);
  border-top: 2px solid var(--lime);
  color: inherit;
  text-decoration: none;
  transition: transform var(--ease), border-color var(--ease), background var(--ease);
}

.page-home .next__card--signal {
  border-top-color: var(--signal);
}

.page-home .next__card--clay {
  border-top-color: var(--clay);
}

.page-home .next__card:hover {
  transform: translateY(-2px);
  background: rgba(14, 35, 27, 0.92);
  border-color: rgba(155, 229, 100, 0.4);
}

.page-home .next__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-home .next__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-home .next__text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-home .next__arrow {
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--lime);
}

.page-home .next__foot {
  margin: 1.5rem 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--stone);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .boot__readouts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .readout {
    padding: 1.1rem 1.15rem;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-home .readout:first-child {
    padding-left: 0;
    border-left: 0;
  }
}

@media (min-width: 760px) {
  .page-home .steps {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 2rem;
    align-items: start;
  }

  .page-home .board__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-items: stretch;
  }

  .page-home .board__cell--big {
    grid-row: 1 / span 2;
  }

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

  .page-home .panel__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 1.5rem;
    align-items: baseline;
  }

  .page-home .compare__stage {
    padding: 1.75rem 1.75rem 2rem 2rem;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), 0 100%);
  }
}

@media (min-width: 920px) {
  .page-home .boot__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3rem;
    align-items: end;
  }

  .page-home .boot__figure {
    align-self: end;
  }

  .page-home .replay {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-home .home-body {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 3rem;
    align-items: start;
  }

  .page-home .rail {
    position: sticky;
    top: 6.5rem;
    align-self: start;
    margin-bottom: 0;
  }

  .page-home .rail__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-home .rail__link {
    position: relative;
    width: 100%;
    padding: 0.55rem 0 0.55rem 1.1rem;
    border: 0;
    border-radius: 0;
    white-space: normal;
    background: transparent;
  }

  .page-home .rail__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 1px;
    height: 0;
    background: var(--lime);
    transform: translateY(-50%);
    transition: height var(--ease);
  }

  .page-home .rail__link[aria-current="true"] {
    color: var(--lime);
    background: transparent;
  }

  .page-home .rail__link[aria-current="true"]::before {
    height: 100%;
  }

  .page-home .rail__link[aria-current="true"] .rail__num {
    color: var(--lime);
  }
}

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

  .page-home .board__cell:hover {
    transform: none;
  }
}

.page-home {
  --home-figure-radius: 0;
  position: relative;
  overflow-x: clip;
  color: var(--cream);
  background:
    radial-gradient(120% 70% at 88% -8%, rgba(155, 229, 100, 0.11), transparent 62%),
    var(--ink);
  padding-bottom: clamp(3rem, 6vw, 5.5rem);
}

.page-home::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: min(1200px, 118vh);
  background-image:
    linear-gradient(to right, rgba(28, 59, 46, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(28, 59, 46, 0.55) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent);
  pointer-events: none;
  z-index: 0;
}

.page-home img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-home :focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 开机区 ---------- */
.page-home .boot {
  position: relative;
  z-index: 1;
  padding-top: clamp(5.5rem, 9vw, 8rem);
}

.page-home .boot__inner {
  display: grid;
  gap: 2rem;
}

.page-home .boot__status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
  margin: 0;
  padding: 0.4rem 0.9rem 0.4rem 0.65rem;
  border: 1px solid rgba(155, 229, 100, 0.65);
  border-radius: var(--radius-pill);
  background: rgba(155, 229, 100, 0.07);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.page-home .boot__signal {
  flex: none;
  color: var(--lime);
}

.page-home .boot__status-sep {
  color: var(--clay);
}

.page-home .boot__title {
  margin: 1.15rem 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.6vw, 4rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--cream);
}

.page-home .boot__title em {
  font-style: normal;
  color: var(--lime);
}

.page-home .boot__lede {
  margin: 1.2rem 0 0;
  max-width: 33em;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .boot__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.page-home .boot__note {
  margin: 1rem 0 0;
  max-width: 34em;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--clay);
}

.page-home .boot__figure {
  position: relative;
  margin: 0;
}

.page-home .boot__figure img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  border: 1px solid var(--line);
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 95%);
  filter: saturate(0.82) contrast(1.06) brightness(0.86);
}

.page-home .boot__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(155, 229, 100, 0.07) 0,
    rgba(155, 229, 100, 0.07) 1px,
    transparent 1px,
    transparent 5px
  );
  pointer-events: none;
}

.page-home .boot__readouts {
  display: grid;
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.page-home .readout {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}

.page-home .readout__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 4.2vw, 2.15rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.page-home .readout__unit {
  margin-left: 0.2rem;
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--stone);
}

.page-home .readout__label {
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 主体分栏 ---------- */
.page-home .home-body {
  position: relative;
  z-index: 1;
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.page-home .rail {
  margin-bottom: 1.5rem;
}

.page-home .rail__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.5rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-home .rail__list::-webkit-scrollbar {
  display: none;
}

.page-home .rail__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--stone);
  font-size: 0.8rem;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--ease), border-color var(--ease), background var(--ease);
}

.page-home .rail__link:hover {
  color: var(--lime);
  border-color: rgba(155, 229, 100, 0.5);
}

.page-home .rail__link[aria-current="true"] {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-home .rail__num {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--clay);
}

.page-home .rail__link[aria-current="true"] .rail__num {
  color: rgba(7, 19, 15, 0.65);
}

.page-home .stream {
  display: flex;
  flex-direction: column;
  gap: clamp(3rem, 6.5vw, 5.5rem);
}

.page-home .home-sec {
  scroll-margin-top: 7rem;
}

.page-home .home-sec__head {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.75rem;
}

.page-home .home-sec__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--signal);
}

.page-home .home-sec h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.6vw, 2.2rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-home .home-sec__lede {
  margin: 0;
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--stone);
}

/* ---------- 步骤 ---------- */
.page-home .steps {
  display: grid;
  gap: 1.75rem;
}

.page-home .steps__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-home .step {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.page-home .step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.75rem;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-home .step__title {
  margin: 0.55rem 0 0;
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--cream);
}

.page-home .step__text {
  margin: 0.45rem 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .step__more {
  margin-top: 0.75rem;
  padding-left: 0.85rem;
  border-left: 1px solid var(--line);
}

.page-home .step__more summary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--lime);
}

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

.page-home .step__more summary::after {
  content: "+";
  font-size: 0.85rem;
}

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

.page-home .step__more p {
  margin: 0.6rem 0 0;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--stone);
}

/* ---------- 图片容器 ---------- */
.page-home .fig {
  margin: 0;
  position: relative;
}

.page-home .fig img {
  width: 100%;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--home-figure-radius);
}

.page-home .fig--tall img {
  aspect-ratio: 3 / 4;
}

.page-home .fig--wide img {
  aspect-ratio: 3 / 2;
}

.page-home .fig__cap {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--clay);
}

/* ---------- 版本对照 ---------- */
.page-home .compare__stage {
  position: relative;
  padding: 1.35rem 1.1rem 1.6rem;
  background: linear-gradient(158deg, rgba(14, 35, 27, 0.96), rgba(7, 19, 15, 0.7));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.page-home .switch {
  position: relative;
}

.page-home .switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
}

.page-home .switch__labels {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(7, 19, 15, 0.65);
}

.page-home .switch__label {
  padding: 0.42rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--stone);
  cursor: pointer;
  transition: background var(--ease), color var(--ease);
}

.page-home #ver-app:checked ~ .switch__labels .switch__label[for="ver-app"],
.page-home #ver-legacy:checked ~ .switch__labels .switch__label[for="ver-legacy"] {
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
}

.page-home #ver-app:focus-visible ~ .switch__labels .switch__label[for="ver-app"],
.page-home #ver-legacy:focus-visible ~ .switch__labels .switch__label[for="ver-legacy"] {
  outline: 2px solid var(--cream);
  outline-offset: 2px;
}

.page-home .switch__panels {
  margin-top: 1.35rem;
}

.page-home .switch__panel {
  display: none;
}

.page-home #ver-app:checked ~ .switch__panels .switch__panel--app,
.page-home #ver-legacy:checked ~ .switch__panels .switch__panel--legacy {
  display: block;
}

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

.page-home .panel__row {
  display: grid;
  gap: 0.2rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}

.page-home .panel__term {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-home .panel__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--cream);
}

.page-home .compare__fig {
  margin-top: 1.5rem;
}

/* ---------- 同屏读数 ---------- */
.page-home .board {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-home .board__lead {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-home .board__big {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(3.2rem, 11vw, 5.5rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.page-home .board__leadtext {
  margin: 0;
  max-width: 26em;
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-home .board__grid {
  display: grid;
  gap: 1rem;
}

.page-home .board__cell {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 1.15rem;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color var(--ease);
}

.page-home .board__cell::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent, rgba(155, 229, 100, 0.14), transparent);
  transform: translateY(-100%);
  transition: transform 420ms ease;
  pointer-events: none;
}

.page-home .board__cell:hover {
  border-color: rgba(155, 229, 100, 0.45);
}

.page-home .board__cell:hover::after {
  transform: translateY(100%);
}

.page-home .board__title {
  margin: 0.15rem 0 0;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-home .board__text {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .board__note {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--clay);
}

.page-home .board__meter {
  display: flex;
  gap: 2px;
  height: 8px;
  margin-top: 0.2rem;
}

.page-home .board__meter span:first-child {
  flex: 58;
  background: rgba(155, 229, 100, 0.72);
}

.page-home .board__meter span:last-child {
  flex: 42;
  background: var(--clay);
}

.page-home .board__cell .tag {
  align-self: flex-start;
}

/* ---------- 回看与导出 ---------- */
.page-home .replay {
  display: grid;
  gap: 1.75rem;
}

.page-home .replay__text {
  margin: 0;
  max-width: 32em;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--stone);
}

.page-home .formats {
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.page-home .format {
  display: grid;
  grid-template-columns: 4.2rem minmax(0, 1fr);
  gap: 0.9rem;
  align-items: baseline;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
}

.page-home .format:last-child {
  border-bottom: 1px solid var(--line);
}

.page-home .format__code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-home .format__desc {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-home .replay__note {
  margin: 1.35rem 0 0;
  max-width: 32em;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-home .replay__body .btn {
  margin-top: 1.35rem;
}

/* ---------- 下一步 ---------- */
.page-home .next__grid {
  display: grid;
  gap: 1rem;
}

.page-home .next__card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1.2rem 1.2rem 1.35rem;
  background: rgba(14, 35, 27, 0.62);
  border: 1px solid var(--line);
  border-top: 2px solid var(--lime);
  color: inherit;
  text-decoration: none;
  transition: transform var(--ease), border-color var(--ease), background var(--ease);
}

.page-home .next__card--signal {
  border-top-color: var(--signal);
}

.page-home .next__card--clay {
  border-top-color: var(--clay);
}

.page-home .next__card:hover {
  transform: translateY(-2px);
  background: rgba(14, 35, 27, 0.92);
  border-color: rgba(155, 229, 100, 0.4);
}

.page-home .next__tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-home .next__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-home .next__text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-home .next__arrow {
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--lime);
}

.page-home .next__foot {
  margin: 1.5rem 0 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--stone);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .boot__readouts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .readout {
    padding: 1.1rem 1.15rem;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-home .readout:first-child {
    padding-left: 0;
    border-left: 0;
  }
}

@media (min-width: 760px) {
  .page-home .steps {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    gap: 2rem;
    align-items: start;
  }

  .page-home .board__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-items: stretch;
  }

  .page-home .board__cell--big {
    grid-row: 1 / span 2;
  }

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

  .page-home .panel__row {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    gap: 1.5rem;
    align-items: baseline;
  }

  .page-home .compare__stage {
    padding: 1.75rem 1.75rem 2rem 2rem;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), 0 100%);
  }
}

@media (min-width: 920px) {
  .page-home .boot__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 3rem;
    align-items: end;
  }

  .page-home .boot__figure {
    align-self: end;
  }

  .page-home .replay {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-home .home-body {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 3rem;
    align-items: start;
  }

  .page-home .rail {
    position: sticky;
    top: 6.5rem;
    align-self: start;
    margin-bottom: 0;
  }

  .page-home .rail__list {
    flex-direction: column;
    gap: 0;
    padding-bottom: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-home .rail__link {
    position: relative;
    width: 100%;
    padding: 0.55rem 0 0.55rem 1.1rem;
    border: 0;
    border-radius: 0;
    white-space: normal;
    background: transparent;
  }

  .page-home .rail__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 1px;
    height: 0;
    background: var(--lime);
    transform: translateY(-50%);
    transition: height var(--ease);
  }

  .page-home .rail__link[aria-current="true"] {
    color: var(--lime);
    background: transparent;
  }

  .page-home .rail__link[aria-current="true"]::before {
    height: 100%;
  }

  .page-home .rail__link[aria-current="true"] .rail__num {
    color: var(--lime);
  }
}

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

  .page-home .board__cell:hover {
    transform: none;
  }
}