.page-home {
  --home-rail-w: 272px;
  --home-gap: clamp(24px, 3.4vw, 56px);
  --home-pad: clamp(24px, 2.6vw, 34px);
  background: var(--ink-900);
  color: var(--text-hi);
}

.page-home .home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 左栏竖向索引 ---------- */
.page-home .home-rail {
  padding-top: calc(var(--nav-h) + 20px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hairline);
}

.page-home .home-rail__slogan {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 4.6vw, 23px);
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--teal);
}

.page-home .home-rail__note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-home .anchor-rail__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-home .anchor-rail__item {
  flex: 0 0 auto;
}

.page-home .anchor-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--hairline);
  color: var(--text-mid);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-home .anchor-rail__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-home .anchor-rail__link:hover,
.page-home .anchor-rail__link:focus-visible {
  color: var(--text-hi);
  border-color: var(--teal-a56);
  background: var(--teal-a08);
}

/* ---------- 右栏内容流 ---------- */
.page-home .home-flow {
  min-width: 0;
}

.page-home .home-block {
  padding: clamp(42px, 6vw, 82px) 0;
  border-bottom: 1px solid var(--hairline);
}

.page-home .home-block--hero {
  padding-top: calc(var(--nav-h) + 26px);
}

.page-home .home-block--doors {
  border-bottom: 0;
}

.page-home .home-head {
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-home .home-head--tight {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-home .home-head__meta {
  margin: 14px 0 0;
}

.page-home .home-head__title {
  margin: 10px 0 0;
  color: var(--text-hi);
}

.page-home .home-head__lede {
  margin-top: 20px;
  max-width: 40em;
  color: var(--text-mid);
}

.page-home .home-head .prose,
.page-home .home-block .prose {
  max-width: 40em;
  color: var(--text-mid);
}

/* ---------- 首屏 ---------- */
.page-home .home-hero__body {
  display: grid;
  gap: 22px;
}

.page-home .home-task {
  display: grid;
  gap: 0;
  padding: 0;
  overflow: hidden;
}

.page-home .home-task__figure {
  margin: 0;
  border-bottom: 1px solid var(--hairline);
}

.page-home .home-task__body {
  padding: var(--home-pad);
}

.page-home .home-task__tip {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-mid);
}

.page-home .check-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .check-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border: 1px solid var(--hairline);
  background: var(--ink-900);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-home .check-item:hover {
  border-color: var(--teal-a32);
}

.page-home .check-item__box {
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--teal);
  cursor: pointer;
}

.page-home .check-item__text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-hi);
  cursor: pointer;
}

.page-home .check-item:has(.check-item__box:checked) {
  border-color: var(--teal-deep);
  background: var(--teal-a08);
}

.page-home .home-next {
  padding: 20px 22px;
  border: 1px solid var(--hairline);
  background: var(--ink-800);
}

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

.page-home .home-next__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}

.page-home .home-next__item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-home .home-next__no {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 300;
  color: var(--teal);
}

.page-home .home-next__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-mid);
}

/* ---------- 四条高频入口 ---------- */
.page-home .home-tasks {
  display: grid;
  gap: 26px;
}

.page-home .home-tasks__figure {
  margin: 0;
  max-width: 340px;
}

.page-home .task-index {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .task-index__item {
  padding: var(--home-pad);
  border: 1px solid var(--hairline);
  background: var(--ink-800);
  transition: border-color var(--dur) var(--ease), opacity var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-home .task-index__item--backup {
  border-left: 3px solid var(--teal);
}

.page-home .task-index__item--mnemonic {
  border-left: 3px solid var(--amber);
}

.page-home .task-index__item--legacy {
  border-left: 3px solid var(--violet-legacy);
  filter: saturate(0.55);
}

.page-home .task-index__item--address {
  border-left: 3px solid var(--teal-deep);
}

.page-home .task-index:hover .task-index__item {
  opacity: 0.7;
}

.page-home .task-index .task-index__item:hover {
  opacity: 1;
  border-color: var(--teal-a32);
  border-left-color: var(--teal);
  box-shadow: var(--shadow-hover);
}

.page-home .task-index__lead {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
}

.page-home .task-index__no {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 200;
  line-height: 1;
  color: var(--text-mid);
}

.page-home .task-index__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 27px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--text-hi);
}

.page-home .task-index__desc {
  margin: 10px 0 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-mid);
}

.page-home .task-index__meta {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--text-mid);
}

.page-home .task-index__link {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid var(--teal-a32);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .task-index__link:hover {
  border-bottom-color: var(--teal);
}

.page-home .task-index__link--legacy {
  color: var(--violet-legacy);
  border-bottom-color: var(--violet-a50);
}

.page-home .task-steps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .step-chip {
  padding: 6px 11px;
  border: 1px solid var(--amber-a28);
  background: var(--amber-a08);
  color: var(--amber);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-home .step-chip--last {
  border-style: dashed;
  color: var(--text-mid);
  border-color: var(--hairline);
  background: transparent;
}

.page-home .task-table {
  width: 100%;
  margin: 16px 0 0;
  border-collapse: collapse;
  font-size: 14px;
}

.page-home .task-table caption {
  text-align: left;
  padding-bottom: 10px;
  color: var(--text-mid);
}

.page-home .task-table th,
.page-home .task-table td {
  padding: 10px 12px 10px 0;
  border-bottom: 1px solid var(--hairline);
  text-align: left;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-mid);
}

.page-home .task-table th {
  width: 7em;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--teal);
}

/* ---------- 时间线 ---------- */
.page-home .home-cadence__figure {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.page-home .timeline {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.page-home .timeline__item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline);
}

.page-home .timeline__year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-home .timeline__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-mid);
}

.page-home .cadence {
  margin-top: clamp(24px, 3.4vw, 38px);
  padding: var(--home-pad);
}

.page-home .cadence__label {
  color: var(--text-on-paper);
  opacity: 0.6;
}

.page-home .cadence__text {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 新旧版对比 ---------- */
.page-home .compare {
  display: grid;
  gap: 18px;
}

.page-home .compare__current,
.page-home .compare__legacy {
  padding: var(--home-pad);
}

.page-home .compare__current {
  border-top: 3px solid var(--teal);
}

.page-home .compare__legacy {
  border-top: 3px solid var(--violet-legacy);
  filter: saturate(0.55);
}

.page-home .compare__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 300;
  color: var(--text-hi);
}

.page-home .compare__list {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-home .compare__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-mid);
}

.page-home .compare__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--teal);
}

.page-home .compare__legacy .compare__list li::before {
  background: var(--violet-legacy);
}

/* ---------- 页脚前核对入口 ---------- */
.page-home .home-cta {
  display: grid;
  gap: 22px;
  padding: var(--home-pad);
  border: 1px solid var(--teal-a32);
  background: linear-gradient(160deg, var(--ink-800) 0%, var(--ink-900) 72%);
}

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

.page-home .home-cta__body .prose {
  margin-top: 16px;
}

.page-home .home-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-home .home-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  font-size: 13px;
  line-height: 1.8;
  color: var(--amber);
}

/* ---------- 三处入口 ---------- */
.page-home .home-doors {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hairline);
}

.page-home .home-door {
  border-bottom: 1px solid var(--hairline);
}

.page-home .home-door__link {
  display: grid;
  gap: 8px;
  padding: 20px 4px 20px 0;
  text-decoration: none;
  transition: opacity var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-home .home-door__title {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 24px);
  font-weight: 300;
  color: var(--text-hi);
  transition: color var(--dur) var(--ease);
}

.page-home .home-door__desc {
  max-width: 40em;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-mid);
}

.page-home .home-doors:hover .home-door__link {
  opacity: 0.7;
}

.page-home .home-doors .home-door__link:hover {
  opacity: 1;
}

.page-home .home-door__link:hover .home-door__title {
  color: var(--teal);
}

/* ---------- 图片通用 ---------- */
.page-home .figure__frame {
  overflow: hidden;
  border: 1px solid var(--hairline);
  background: var(--ink-950);
}

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

.page-home .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-mid);
}

/* ---------- 焦点与长串 ---------- */
.page-home a:focus-visible,
.page-home input:focus-visible,
.page-home .check-item__text:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-home .mono {
  overflow-wrap: anywhere;
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 760px) {
  .page-home .home-hero__body {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-home .home-tasks {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

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

  .page-home .home-cta {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 30px;
    padding: clamp(24px, 3vw, 40px);
  }

  .page-home .timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-home .timeline__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 18px 18px 24px 0;
    border-bottom: 0;
    border-right: 1px solid var(--hairline);
  }

  .page-home .timeline__item:last-child {
    border-right: 0;
    padding-right: 0;
  }

  .page-home .home-door__link {
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-home .home-grid {
    grid-template-columns: var(--home-rail-w) minmax(0, 1fr);
    column-gap: var(--home-gap);
    align-items: start;
  }

  .page-home .home-rail {
    position: sticky;
    top: calc(var(--nav-h) + 26px);
    max-height: calc(100vh - var(--nav-h) - 52px);
    overflow-y: auto;
    padding-bottom: 26px;
    border-bottom: 0;
  }

  .page-home .anchor-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }

  .page-home .anchor-rail__item {
    flex: 0 0 auto;
  }

  .page-home .anchor-rail__link {
    display: grid;
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
    width: 100%;
    padding: 11px 12px 11px 0;
    border: 0;
    border-bottom: 1px solid var(--hairline);
    border-left: 2px solid transparent;
    font-size: 14px;
  }

  .page-home .anchor-rail__link:hover,
  .page-home .anchor-rail__link:focus-visible {
    border-left-color: var(--teal);
    background: var(--teal-a08);
  }

  .page-home .home-block:first-child {
    padding-top: calc(var(--nav-h) + 30px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .anchor-rail__link,
  .page-home .task-index__item,
  .page-home .home-door__link,
  .page-home .home-door__title,
  .page-home .check-item,
  .page-home .task-index__link {
    transition: none;
  }
}