/* ============ 首页 page-home ============ */

.page-home {
  display: block;
  color: var(--paper);
  overflow-x: hidden;
}

.page-home .breadcrumbs {
  max-width: var(--wrap-max);
  margin: 0 auto;
  padding: 18px clamp(16px, 4vw, 32px) 0;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.6vw, 54px) 0 clamp(34px, 6vw, 76px);
  background:
    linear-gradient(158deg, var(--ink-800) 0%, var(--ink-800) 44%, var(--ink-900) 44.4%, var(--ink-900) 100%);
  border-bottom: 1px solid var(--rule);
}

.page-home .hero__wash {
  position: absolute;
  right: -12%;
  bottom: -26%;
  width: min(660px, 74%);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 34% 34%, rgba(201, 150, 63, 0.26), transparent 64%);
  pointer-events: none;
}

.page-home .hero::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--gold), rgba(201, 150, 63, 0));
  opacity: 0.85;
}

.page-home .hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 26px;
}

.page-home .hero__rail {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-home .hero__rail-link {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
}

.page-home .hero__rail-num {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  letter-spacing: 0.08em;
  color: var(--gold);
  transition: color var(--dur) var(--ease);
}

.page-home .hero__rail-link:hover .hero__rail-num,
.page-home .hero__rail-link:focus-visible .hero__rail-num {
  color: var(--gold-soft);
}

.page-home .hero__rail-text {
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-home .hero__body {
  max-width: 34em;
}

.page-home .hero__body h1 {
  margin: 12px 0 0;
  font-size: clamp(32px, 6.4vw, 56px);
  line-height: 1.12;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-home .hero__body .lede {
  margin: 18px 0 0;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--muted);
}

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

.page-home .hero__media {
  position: relative;
  margin: 0;
  background: var(--ink-800);
  border: 1px solid var(--rule);
  clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
  overflow: hidden;
}

.page-home .hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  max-width: 100%;
  filter: saturate(0.88) contrast(1.05);
}

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: var(--index-w) minmax(0, 1.05fr) minmax(0, 0.85fr);
    column-gap: clamp(24px, 3vw, 46px);
    align-items: start;
  }

  .page-home .hero__rail {
    flex-direction: column;
    gap: 24px;
    padding-right: 14px;
    border-right: 1px solid var(--rule);
  }

  .page-home .hero__rail-text {
    display: none;
  }

  .page-home .hero__body h1 {
    margin-top: 16px;
  }
}

/* ---------- 通用区块 ---------- */
.page-home .band {
  padding: clamp(38px, 6vw, 76px) 0;
  border-bottom: 1px solid var(--rule);
}

.page-home .band--tint {
  background: linear-gradient(180deg, rgba(22, 40, 61, 0.72), rgba(14, 26, 43, 1));
}

.page-home .shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

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

.page-home .index-rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-home .index-rail__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 30px;
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--gold-soft);
  background: var(--ink-800);
  border: 1px solid var(--rule);
}

@media (min-width: 860px) {
  .page-home .shell {
    grid-template-columns: var(--index-w) minmax(0, 1fr);
    column-gap: var(--gap);
    align-items: start;
  }

  .page-home .index-rail {
    display: block;
    position: sticky;
    top: 96px;
    padding-right: 14px;
    border-right: 1px solid var(--rule);
  }

  .page-home .index-rail__num {
    min-width: 52px;
  }
}

.page-home .section-head + * {
  margin-top: 24px;
}

/* ---------- 三栏索引卡 ---------- */
.page-home .nums {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.page-home .nums__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 32px);
  background: var(--ink-800);
}

.page-home .nums__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 150, 63, 0));
  transform: scaleX(0.26);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}

.page-home .nums__item:hover::before,
.page-home .nums__item:focus-within::before {
  transform: scaleX(1);
}

.page-home .nums__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-home .nums__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--paper);
}

.page-home .nums__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-home .nums__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(229, 196, 134, 0.45);
}

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

@media (min-width: 780px) {
  .page-home .nums {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 换机步骤 ---------- */
.page-home .split {
  display: grid;
  gap: 24px;
}

.page-home .split__media {
  margin: 0;
  border: 1px solid var(--rule);
  background: var(--ink-800);
}

.page-home .split__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-home .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-home .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--rule);
}

.page-home .steps__item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-home .steps__item::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 34px;
  bottom: -4px;
  width: 1px;
  background: linear-gradient(180deg, var(--celadon), rgba(47, 127, 110, 0.1));
}

.page-home .steps__item:last-child::before {
  display: none;
}

.page-home .steps__num {
  display: block;
  width: 42px;
  height: 30px;
  line-height: 28px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--gold);
  background: rgba(201, 150, 63, 0.08);
  border: 1px solid var(--gold);
}

.page-home .steps__title {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--paper);
}

.page-home .steps__body p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--muted);
  max-width: 34em;
}

@media (min-width: 900px) {
  .page-home .split {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    column-gap: clamp(24px, 3vw, 44px);
    align-items: start;
  }
}

/* ---------- 收藏夹 ---------- */
.page-home .aside-layout {
  display: grid;
  gap: 24px;
}

.page-home .aside-layout__main p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.02em;
  color: var(--muted);
  max-width: 34em;
}

.page-home .aside-layout__main p:last-of-type {
  margin-bottom: 20px;
}

.page-home .aside-layout__media {
  margin: 0;
}

.page-home .aside-layout__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--rule);
  background: var(--ink-800);
}

@media (min-width: 900px) {
  .page-home .aside-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.6fr);
    column-gap: clamp(22px, 3vw, 40px);
    align-items: start;
  }

  .page-home .aside-layout__media {
    padding-left: 20px;
    border-left: 1px solid var(--rule);
  }
}

/* ---------- 版本对照 ---------- */
.page-home .compare {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.page-home .compare__col {
  padding: clamp(20px, 2.6vw, 30px);
}

.page-home .compare__col--old {
  background: linear-gradient(180deg, rgba(107, 34, 51, 0.44), rgba(107, 34, 51, 0.14));
}

.page-home .compare__col--new {
  background: linear-gradient(180deg, rgba(47, 127, 110, 0.36), rgba(47, 127, 110, 0.1));
}

.page-home .compare__col h3 {
  margin: 14px 0 0;
  font-size: 20px;
  font-weight: 800;
  color: var(--paper);
}

.page-home .compare__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .compare__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.78;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-home .compare__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--gold-soft);
  opacity: 0.75;
}

.page-home .compare__media {
  margin: 24px 0 0;
}

.page-home .compare__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  border: 1px solid var(--rule);
  background: var(--ink-800);
}

@media (min-width: 820px) {
  .page-home .compare {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 差异明细 */
.page-home .diff {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-home .diff li {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 14px;
}

.page-home .diff__key {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold-soft);
}

.page-home .diff__val {
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home .diff__foot {
  margin: 18px 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

@media (max-width: 560px) {
  .page-home .diff li {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
}

/* ---------- 适用场景 ---------- */
.page-home .scenes {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.page-home .scene {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--ink-800);
}

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

.page-home .scene__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--paper);
}

.page-home .scene p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--muted);
}

@media (min-width: 820px) {
  .page-home .scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 求助 ---------- */
.page-home .ask {
  display: grid;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}

.page-home .ask__box {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink-800);
}

.page-home .ask__box--gold {
  background: linear-gradient(160deg, rgba(201, 150, 63, 0.18), rgba(22, 40, 61, 0.92));
}

.page-home .ask__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--paper);
}

.page-home .ask__box p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--muted);
  max-width: 34em;
}

.page-home .ask__box .btn {
  margin-top: auto;
  align-self: flex-start;
}

@media (min-width: 820px) {
  .page-home .ask {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-home .nums__item::before,
  .page-home .hero__rail-num {
    transition: none;
  }
}