.page-home {
  --ph-y: clamp(52px, 8vw, 96px);
  --ph-gap: clamp(20px, 4vw, 64px);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-home .crumbs {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-home .crumbs__list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-home .crumbs__item[aria-current] {
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  padding-top: clamp(22px, 4vw, 46px);
  padding-bottom: var(--ph-y);
}

.page-home .hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 52px);
  align-items: end;
}

.page-home .hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-home .hero__kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  flex: none;
}

.page-home .hero__title {
  margin: 0 0 24px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 8.6vw, 96px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--title);
}

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

.page-home .hero__lede {
  max-width: 30em;
  margin: 0 0 32px;
  font-size: 17px;
  line-height: 1.95;
  color: var(--text);
}

.page-home .hero__cta {
  margin: 0 0 42px;
}

.page-home .hero__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .hero__meta > div {
  background: var(--ink);
  padding: 14px 16px;
}

.page-home .hero__meta dt {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-home .hero__meta dd {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--title);
  letter-spacing: 0.02em;
}

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

.page-home .hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 1px solid var(--line);
  filter: saturate(0.92) contrast(1.04);
}

.page-home .hero__visual::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 64px;
  height: 64px;
  border-right: 2px solid var(--accent-dim);
  border-bottom: 2px solid var(--accent-dim);
  pointer-events: none;
}

/* ---------- 通用章节骨架 ---------- */
.page-home .ph-sect {
  padding-block: var(--ph-y);
  border-top: 1px solid var(--line);
}

.page-home .ph-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: clamp(34px, 5vw, 58px);
}

.page-home .ph-num {
  display: block;
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(58px, 10vw, 152px);
  font-weight: 700;
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--accent);
}

.page-home .ph-title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: var(--title);
}

.page-home .ph-sub {
  max-width: 38em;
  margin: 0;
  font-size: 17px;
  line-height: 1.95;
  color: var(--text);
}

/* ---------- 三步流程 ---------- */
.page-home .flow-visual {
  margin: 0 0 clamp(30px, 4vw, 46px);
  max-width: 660px;
}

.page-home .flow-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  background: var(--ink-2);
}

.page-home .flow-cap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-home .flow-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

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

.page-home .flow-item__h {
  margin: 0;
}

.page-home .flow-item__toggle {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 6px 16px;
  width: 100%;
  padding: 22px 0 10px;
  background: none;
  border: 0;
  font: inherit;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.page-home .flow-item__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
  grid-column: 1;
}

.page-home .flow-item__name {
  grid-column: 2;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 28px);
  letter-spacing: -0.01em;
  color: var(--title);
}

.page-home .flow-item__time {
  grid-column: 2;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-home .flow-item__panel {
  padding: 0 0 28px;
}

.page-home .flow-item__panel p {
  max-width: 38em;
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text);
}

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

.page-home .flow-item__need li {
  padding: 5px 10px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-home .flow-item__warn {
  margin: 16px 0 0;
  padding: 12px 14px;
  max-width: 38em;
  border-left: 2px solid var(--amber);
  background: var(--card);
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 版本对照 ---------- */
.page-home .ver-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-home .ver-card {
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  background: var(--card);
}

.page-home .ver-card--legacy {
  background: var(--ink-2);
  border-left: 2px solid var(--amber);
}

.page-home .ver-card .tag {
  margin-bottom: 18px;
}

.page-home .ver-card__name {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 3vw, 24px);
  line-height: 1.4;
  color: var(--title);
}

.page-home .ver-card__desc {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text);
}

.page-home .ver-card__list {
  margin: 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-home .ver-card__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .ver-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 1px;
  background: var(--accent-dim);
}

.page-home .ver-card--legacy .ver-card__list li::before {
  background: var(--amber);
}

.page-home .ver-visual {
  margin: clamp(30px, 4vw, 50px) 0 0;
}

.page-home .ver-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

.page-home .ver-cap {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 分类索引 ---------- */
.page-home .idx-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .idx-cell {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--ink);
}

.page-home .idx-cell__num {
  font-size: clamp(30px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--accent);
}

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

.page-home .idx-cell__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-home .idx-more {
  margin: 0;
}

/* ---------- 文档导出 ---------- */
.page-home .exp-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-home .exp-copy p {
  max-width: 38em;
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.95;
  color: var(--text);
}

.page-home .exp-formats {
  display: grid;
  gap: 1px;
  max-width: 34em;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .exp-formats li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 18px;
  padding: 14px 16px;
  background: var(--ink);
  font-size: 15px;
  color: var(--title);
}

.page-home .exp-formats .mono {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-home .exp-visual {
  margin: 0;
}

.page-home .exp-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
}

/* ---------- 更新与咨询 ---------- */
.page-home .upd-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4vw, 48px);
}

.page-home .upd-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home .upd-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .upd-item__when {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-home .upd-item__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  color: var(--title);
}

.page-home .upd-item__desc {
  max-width: 40em;
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}

.page-home .cta-card {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--line);
  background: var(--card);
}

.page-home .cta-card__title {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.4;
  color: var(--title);
}

.page-home .cta-card__desc {
  margin: 0 0 22px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}

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

.page-home .cta-card__meta {
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 4px;
}

.page-home .cta-card__meta dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-home .cta-card__meta dd {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  word-break: break-word;
}

.page-home .cta-card__meta dd:last-child {
  margin-bottom: 0;
}

.page-home .upd-foot {
  margin: clamp(24px, 3vw, 34px) 0 0;
}

/* ---------- 滚动显现 ---------- */
.page-home [data-reveal] {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .js-ready .page-home [data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 520ms var(--ease), transform 520ms var(--ease);
  }

  .js-ready .page-home [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }

  .js-ready .page-home [data-reveal="1"] { transition-delay: 70ms; }
  .js-ready .page-home [data-reveal="2"] { transition-delay: 140ms; }
  .js-ready .page-home [data-reveal="3"] { transition-delay: 210ms; }
  .js-ready .page-home [data-reveal="4"] { transition-delay: 280ms; }
}

@media (prefers-reduced-motion: reduce) {
  .page-home [data-reveal] {
    opacity: 1;
    transform: none;
    transition: opacity 120ms linear;
  }

  .page-home .hero__visual::after {
    display: none;
  }
}

/* ---------- 交互细节 ---------- */
.page-home .flow-item__toggle:hover .flow-item__name {
  color: var(--accent);
}

.page-home .flow-item__toggle:hover .flow-item__num {
  color: var(--accent-dim);
}

.page-home .flow-item__toggle {
  transition: color 160ms var(--ease);
}

.page-home .ver-card--legacy .tag--amber {
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-home .hero__meta {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .flow-item__toggle {
    grid-template-columns: auto 1fr auto;
    padding-bottom: 12px;
  }

  .page-home .flow-item__name {
    grid-column: 2;
  }

  .page-home .flow-item__time {
    grid-column: 3;
    grid-row: 1;
    text-align: right;
  }

  .page-home .flow-item__panel {
    padding-left: 0;
  }

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

@media (min-width: 900px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-home .ph-head {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 40px;
    align-items: start;
  }

  .page-home .flow-visual {
    margin-left: 25%;
  }

  .page-home .ver-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 22px;
  }

  .page-home .ver-card--legacy {
    margin-top: 34px;
  }

  .page-home .exp-wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-home .upd-wrap {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-home .idx-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>