.page-home {
  --home-glow-cyan: rgba(59, 224, 209, 0.10);
  --home-glow-amber: rgba(255, 180, 58, 0.16);
  --home-tint-cyan: rgba(18, 99, 95, 0.22);
  position: relative;
}

.page-home .home-hero {
  position: relative;
  padding-block: clamp(18px, 3vw, 34px) clamp(48px, 7vw, 96px);
  background-image: radial-gradient(680px 520px at 78% 4%, var(--home-glow-cyan), rgba(59, 224, 209, 0) 72%);
  background-repeat: no-repeat;
}

.page-home .home-hero .breadcrumb {
  margin-bottom: clamp(18px, 2.5vw, 30px);
}

.page-home .home-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 4vw, 56px);
  align-items: start;
}

.page-home .home-hero__lead {
  min-width: 0;
}

.page-home .home-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(31px, 6.2vw, 60px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--paper-000);
  max-width: 17ch;
}

.page-home .home-hero .eyebrow {
  color: var(--cyan-400);
}

.page-home .home-hero .lede {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.8;
  color: var(--paper-400);
}

/* 章节预览清单 */
.page-home .home-ledger {
  list-style: none;
  margin: clamp(30px, 4vw, 48px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-600);
}

.page-home .home-ledger__item {
  border-bottom: 1px solid var(--line-600);
}

.page-home .home-ledger__item a {
  display: grid;
  grid-template-columns: 3.4em minmax(0, 1fr);
  column-gap: 12px;
  row-gap: 3px;
  padding: 14px 8px 14px 2px;
  text-decoration: none;
  color: var(--paper-000);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-home .home-ledger__item a:hover,
.page-home .home-ledger__item a:focus-visible {
  color: var(--cyan-400);
  padding-left: 12px;
}

.page-home .home-ledger__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--slate-500);
  transition: color 0.2s var(--ease);
}

.page-home .home-ledger__item a:hover .home-ledger__num,
.page-home .home-ledger__item a:focus-visible .home-ledger__num {
  color: var(--cyan-400);
}

.page-home .home-ledger__name {
  grid-column: 2;
  grid-row: 1;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.page-home .home-ledger__desc {
  grid-column: 2;
  grid-row: 2;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--paper-400);
}

/* 首屏右侧：时间戳胶囊与图形 */
.page-home .home-hero__aside {
  min-width: 0;
}

.page-home .home-stamp {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  z-index: 5;
}

.page-home .home-stamp__peek {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  z-index: 8;
  width: min(340px, 82vw);
  padding: 16px 18px 18px;
  border-radius: var(--radius-md);
  background-color: var(--ink-800);
  border: 1px solid var(--line-600);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s linear;
}

.page-home .home-stamp:hover .home-stamp__peek,
.page-home .home-stamp:focus-within .home-stamp__peek {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.page-home .home-stamp__peek-title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber-400);
}

.page-home .home-stamp__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-home .home-stamp__list li {
  display: grid;
  grid-template-columns: 4.2em minmax(0, 1fr);
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper-400);
}

.page-home .home-stamp__list .mono {
  font-size: 12px;
  color: var(--cyan-400);
}

.page-home .home-hero__figure {
  margin: clamp(26px, 3vw, 38px) 0 0;
}

.page-home .home-hero__figure .figure__caption {
  margin-top: 12px;
}

/* 主体：左窄栏锚点 + 右宽栏内容 */
.page-home .home-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 4vw, 56px);
  padding-bottom: clamp(56px, 8vw, 110px);
}

.page-home .home-rail {
  position: relative;
  z-index: 4;
  min-width: 0;
}

.page-home .home-rail__nav {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-home .home-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-600);
  color: var(--paper-400);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-home .home-rail__link .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate-500);
  transition: color 0.2s var(--ease);
}

.page-home .home-rail__link:hover {
  color: var(--paper-000);
  border-color: var(--cyan-700);
}

.page-home .home-rail__link.is-active {
  color: var(--cyan-400);
  border-color: var(--cyan-700);
  background-color: var(--home-tint-cyan);
}

.page-home .home-rail__link.is-active .mono {
  color: var(--cyan-400);
}

/* 内容流 */
.page-home .home-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 6vw, 92px);
  min-width: 0;
}

.page-home .home-chapter {
  scroll-margin-top: calc(var(--header-h) + 30px);
}

.page-home .home-chapter--band {
  background-color: var(--ink-800);
  border-radius: var(--radius-lg);
  padding: clamp(26px, 4vw, 52px) clamp(22px, 3.4vw, 48px);
}

.page-home .home-chapter__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-600);
}

.page-home .home-chapter__head .index {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-home .home-chapter h2 {
  margin: 0;
  font-size: clamp(23px, 3.3vw, 36px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper-000);
  max-width: 24ch;
}

.page-home .home-chapter .lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.35vw, 16.5px);
  line-height: 1.8;
  color: var(--paper-400);
}

.page-home .home-chapter__actions {
  margin: 26px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .home-figure {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
}

.page-home .home-figure .figure__caption {
  margin-top: 12px;
}

.page-home .home-fold {
  margin-top: clamp(22px, 3vw, 32px);
}

/* 三件事自检 */
.page-home .home-checks {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-home .home-check {
  display: grid;
  grid-template-columns: 2.4em minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-600);
}

.page-home .home-check:first-child {
  border-top: 1px solid var(--line-600);
}

.page-home .home-check__k {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber-400);
}

.page-home .home-check h3 {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-000);
  letter-spacing: -0.01em;
}

.page-home .home-check p {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-400);
}

/* 大屏端 / 电脑端对照 */
.page-home .home-versus {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: clamp(26px, 3.4vw, 38px);
}

.page-home .home-versus__col {
  min-width: 0;
}

.page-home .home-versus__col .eyebrow {
  color: var(--cyan-400);
}

.page-home .home-versus__col ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .home-versus__col li {
  position: relative;
  padding-left: 17px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-400);
}

.page-home .home-versus__col li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--slate-500);
}

.page-home .home-versus__col:first-child li::before {
  background-color: var(--amber-400);
}

/* 换设备准备清单 */
.page-home .home-prep {
  list-style: none;
  margin: clamp(24px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-home .home-prep li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-400);
}

.page-home .home-prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--cyan-400);
  box-shadow: 0 0 0 4px var(--home-glow-cyan);
}

.page-home .home-note {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--amber-400);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-400);
}

/* 位置对照四组 */
.page-home .home-spots {
  list-style: none;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-home .home-spot {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line-600);
}

.page-home .home-spot:first-child {
  border-top: 1px solid var(--line-600);
}

.page-home .home-spot__k {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
}

.page-home .home-spot p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-400);
}

/* 订阅摘要 */
.page-home .home-digest {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 22px 24px 20px;
  border-radius: var(--radius-md);
  background-color: var(--home-tint-cyan);
  border: 1px solid var(--line-600);
}

.page-home .home-digest h3 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper-000);
}

.page-home .home-digest ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-home .home-digest li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper-400);
}

.page-home .home-digest li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background-color: var(--cyan-400);
}

.page-home .home-digest p {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate-500);
}

/* 联系方式 */
.page-home .home-contact {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
}

.page-home .home-contact__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-600);
}

.page-home .home-contact__row:first-child {
  border-top: 1px solid var(--line-600);
}

.page-home .home-contact dt {
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--slate-500);
}

.page-home .home-contact dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper-000);
  word-break: break-word;
}

/* 宽屏布局 */
@media (min-width: 960px) {
  .page-home .home-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 72px);
  }
}

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

  .page-home .home-versus__col:first-child {
    padding-right: 30px;
    border-right: 1px solid var(--line-600);
  }

  .page-home .home-versus__col:last-child {
    padding-left: 30px;
  }

  .page-home .home-spot {
    grid-template-columns: 6.4em minmax(0, 1fr);
    gap: 18px;
  }

  .page-home .home-contact__row {
    grid-template-columns: 7.5em minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

@media (min-width: 1024px) {
  .page-home .home-body {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
  }

  .page-home .home-rail {
    position: sticky;
    top: calc(var(--header-h) + 30px);
  }

  .page-home .home-rail__nav {
    flex-direction: column;
    flex-wrap: wrap;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
    border-left: 1px solid var(--line-600);
  }

  .page-home .home-rail__link {
    position: relative;
    border: 0;
    border-radius: 0;
    padding: 9px 0 9px 16px;
    font-size: 13.5px;
  }

  .page-home .home-rail__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 2px;
    height: 20px;
    background-color: var(--cyan-400);
    transform: translateY(-50%) scaleY(0);
    transition: transform 0.2s var(--ease);
  }

  .page-home .home-rail__link.is-active::before {
    transform: translateY(-50%) scaleY(1);
  }

  .page-home .home-rail__link.is-active {
    background-color: transparent;
  }

  .page-home .home-rail__link:hover {
    border-color: transparent;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-ledger__item a,
  .page-home .home-ledger__num,
  .page-home .home-rail__link,
  .page-home .home-rail__link .mono,
  .page-home .home-rail__link::before,
  .page-home .home-stamp__peek {
    transition: none;
  }

  .page-home .home-stamp__peek {
    transform: none;
  }
}