.page-home {
  --home-rail: 272px;
  --home-line: rgba(198, 188, 169, 0.68);
  background: var(--paper);
  color: var(--ink);
  overflow-x: clip;
}

.page-home .home-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding-block: 18px 0;
}

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

/* ---------- 左侧导览轨道 ---------- */
.page-home .home-rail {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-home .rail-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-home .rail-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-home .rail-switch {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 2px;
}

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

.page-home .rail-switch__item {
  flex: 0 0 auto;
  padding: 9px 15px;
  border-radius: var(--radius-pill);
  background: var(--paper-up);
  border: 1px solid var(--home-line);
  color: var(--deep);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-home .rail-switch__item:hover,
.page-home .rail-switch__item:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
  outline: none;
}

.page-home .rail-nav {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

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

.page-home .rail-nav a {
  flex: 0 0 auto;
  padding: 6px 2px;
  border-bottom: 2px solid var(--grey);
  color: var(--mist);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-home .rail-nav a:hover,
.page-home .rail-nav a:focus-visible {
  color: var(--deep);
  border-bottom-color: var(--gold);
  outline: none;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: 6px;
}

.page-home .crumbs {
  margin: 0 0 14px;
  font-size: 13px;
}

.page-home .home-hero h1 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 7vw, 47px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--deep);
}

.page-home .home-hero__lede {
  margin: 0 0 22px;
  max-width: 42em;
  font-family: var(--font-serif);
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--deep-2);
}

.page-home .home-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.page-home .home-hero__meta {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-home .home-hero__meta .mono {
  color: var(--gold-deep);
  font-weight: 700;
  font-size: 15px;
}

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

.page-home .hero-anchor::before {
  content: "";
  position: absolute;
  top: -14px;
  right: -10px;
  width: 84px;
  height: 84px;
  border-radius: 50%;
  border: 3px solid var(--gold);
  border-left-color: transparent;
  border-bottom-color: transparent;
  opacity: 0.8;
  pointer-events: none;
}

.page-home .hero-anchor img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lift);
  object-fit: cover;
}

.page-home .hero-anchor figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 区块通用 ---------- */
.page-home .home-sec {
  scroll-margin-top: 108px;
  padding-block: 44px;
}

.page-home .home-sec + .home-sec {
  border-top: 1px solid var(--home-line);
}

.page-home .sec-head h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--deep);
}

.page-home .sec-head .serif-lead {
  margin: 0;
  max-width: 46em;
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.9;
  color: var(--deep-2);
}

/* ---------- 版本卡片 ---------- */
.page-home .version-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

.page-home .version-card {
  padding: 24px 22px 22px;
  border-radius: var(--radius-lg);
  background: var(--paper-up);
  border: 1px solid var(--home-line);
  box-shadow: var(--shadow-soft);
  scroll-margin-top: 120px;
  transition: box-shadow 0.2s var(--ease);
}

.page-home .version-card--new {
  border-top: 4px solid var(--gold);
}

.page-home .version-card--old {
  border-top: 4px solid var(--mist);
}

.page-home .version-card:target {
  box-shadow: 0 0 0 3px rgba(217, 162, 49, 0.5), var(--shadow-lift);
}

.page-home .version-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-home .version-card h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  color: var(--deep);
}

.page-home .version-card p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--deep-2);
}

.page-home .version-card ul {
  list-style: none;
  margin: 14px 0 20px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .version-card li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-home .version-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
}

.page-home .version-card--old li::before {
  background: var(--mist);
}

/* ---------- 订阅板块（深色） ---------- */
.page-home .home-sec--deep {
  background: var(--deep);
  border-radius: var(--radius-lg);
  color: var(--paper-up);
  padding: 26px 20px 32px;
  border-top: none;
}

.page-home .pl-banner {
  margin: 0 0 26px;
}

.page-home .pl-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.page-home .home-sec--deep .sec-head h2,
.page-home .home-sec--deep h2 {
  color: var(--paper-up);
}

.page-home .home-sec--deep .sec-head .serif-lead {
  color: rgba(251, 247, 240, 0.8);
}

.page-home .home-sec--deep .eyebrow {
  color: var(--gold);
}

.page-home .pl-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-home .pl-item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 15px 16px 17px;
  border-radius: var(--radius-md);
  background: rgba(251, 247, 240, 0.06);
  border: 1px solid rgba(251, 247, 240, 0.16);
}

.page-home .pl-chip {
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
}

.page-home .pl-chip--1 {
  background: rgba(217, 162, 49, 0.2);
  border: 1px solid rgba(217, 162, 49, 0.55);
  color: #F0C879;
}

.page-home .pl-chip--2 {
  background: rgba(62, 156, 125, 0.2);
  border: 1px solid rgba(62, 156, 125, 0.55);
  color: #8AD8BC;
}

.page-home .pl-chip--3 {
  background: rgba(217, 97, 63, 0.2);
  border: 1px solid rgba(217, 97, 63, 0.55);
  color: #F0A48C;
}

.page-home .pl-chip--4 {
  background: rgba(110, 147, 168, 0.24);
  border: 1px solid rgba(110, 147, 168, 0.55);
  color: #B6D2E0;
}

.page-home .pl-chip--5 {
  background: rgba(244, 237, 225, 0.16);
  border: 1px solid rgba(244, 237, 225, 0.42);
  color: #F4EDE1;
}

.page-home .pl-chip--6 {
  background: rgba(198, 188, 169, 0.18);
  border: 1px solid rgba(198, 188, 169, 0.48);
  color: #D9D0BF;
}

.page-home .pl-item__name {
  margin: 2px 0 0;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--paper-up);
}

.page-home .pl-item__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(251, 247, 240, 0.72);
}

/* ---------- 五步走 ---------- */
.page-home .steps-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 26px;
}

.page-home .steps-figure {
  margin: 0;
}

.page-home .steps-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
  object-fit: cover;
}

.page-home .step-list {
  list-style: none;
  counter-reset: hs;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-home .step-item {
  counter-increment: hs;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 15px 15px;
  border-radius: var(--radius-md);
  background: var(--paper-up);
  border: 1px solid var(--home-line);
}

.page-home .step-item::before {
  content: counter(hs, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold-deep);
  padding-top: 2px;
}

.page-home .step-item h3 {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--deep);
}

.page-home .step-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--deep-2);
}

/* ---------- 差异表 ---------- */
.page-home .diff-scroll {
  margin-top: 24px;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--home-line);
  background: var(--paper-up);
  -webkit-overflow-scrolling: touch;
}

.page-home .diff-scroll:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-home .diff-table {
  width: 100%;
  min-width: 680px;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 13.5px;
}

.page-home .diff-table th,
.page-home .diff-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
}

.page-home .diff-table thead th {
  background: var(--deep-2);
  color: var(--paper-up);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.page-home .diff-table tbody th {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--paper-up);
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--deep);
  white-space: nowrap;
  box-shadow: 1px 0 0 var(--home-line);
}

.page-home .diff-table tbody td {
  color: var(--deep-2);
}

.page-home .diff-table tbody tr:nth-child(even) td {
  background: rgba(244, 237, 225, 0.6);
}

.page-home .diff-table tbody tr + tr th,
.page-home .diff-table tbody tr + tr td {
  border-top: 1px solid var(--home-line);
}

.page-home .diff-foot {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 场景卡片 ---------- */
.page-home .scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
  margin-top: 26px;
}

.page-home .scene-card {
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  background: var(--paper-up);
  border: 1px solid var(--home-line);
}

.page-home .scene-card:nth-child(2) {
  background: #EBF2EE;
}

.page-home .scene-card:nth-child(3) {
  background: #F7ECE7;
}

.page-home .scene-card__k {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-home .scene-card h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--deep);
}

.page-home .scene-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--deep-2);
}

/* ---------- 收尾通道 ---------- */
.page-home .home-sec--help {
  padding-bottom: 0;
}

.page-home .help-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-home .help-copy h2 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.6vw, 28px);
  line-height: 1.3;
  color: var(--deep);
}

.page-home .help-copy .serif-lead {
  margin: 0 0 20px;
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--deep-2);
}

.page-home .help-acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-home .help-links {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-home .help-links a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--paper-up);
  border: 1px solid var(--home-line);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-home .help-links a:hover,
.page-home .help-links a:focus-visible {
  border-color: var(--gold);
  background: #FBF3E2;
  outline: none;
}

.page-home .help-links span {
  font-size: 15px;
  font-weight: 700;
  color: var(--deep);
}

.page-home .help-links small {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-home .final-strip {
  margin: 36px 0 0;
}

.page-home .final-strip img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-home .pl-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-home .version-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

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

  .page-home .home-sec--deep {
    padding: 32px 28px 38px;
  }
}

@media (min-width: 900px) {
  .page-home .steps-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 30px;
    align-items: start;
  }

  .page-home .help-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 34px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-home .home-shell {
    grid-template-columns: var(--home-rail) minmax(0, 1fr);
    gap: 52px;
    padding-block: 42px 0;
    align-items: start;
  }

  .page-home .home-rail {
    position: sticky;
    top: 104px;
  }

  .page-home .rail-switch {
    flex-direction: column;
    overflow: visible;
  }

  .page-home .rail-switch__item {
    white-space: normal;
    text-align: left;
  }

  .page-home .rail-nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .rail-nav a {
    padding: 8px 0 8px 14px;
    border-bottom: none;
    border-left: 2px solid var(--home-line);
  }

  .page-home .rail-nav a:hover,
  .page-home .rail-nav a:focus-visible {
    border-left-color: var(--gold);
  }
}

@media (min-width: 1100px) {
  .page-home .home-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 40px;
    align-items: end;
  }

  .page-home .home-hero__text {
    padding-bottom: 6px;
  }

  .page-home .hero-anchor {
    margin-right: -34px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-switch__item,
  .page-home .rail-nav a,
  .page-home .version-card,
  .page-home .help-links a {
    transition: none;
  }
}