.page-home {
  --home-sticky-top: 28px;
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--indigo);
  color: var(--snow);
  padding: clamp(28px, 4.4vw, 64px) 0 clamp(36px, 5.4vw, 76px);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(to right, rgba(246, 244, 239, .055) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(to bottom, rgba(246, 244, 239, .04) 0 1px, transparent 1px 96px);
}

.page-home .hero::after {
  content: "";
  position: absolute;
  top: -20%;
  right: -12%;
  width: 60vw;
  height: 60vw;
  max-width: 820px;
  max-height: 820px;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(circle, rgba(216, 166, 60, .16), transparent 62%);
}

.page-home .hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-home .hero-lead {
  display: grid;
  align-content: start;
  gap: clamp(14px, 1.6vw, 22px);
}

.page-home .hero-crumb {
  margin: 0;
}

.page-home .hero .breadcrumb-link,
.page-home .hero .breadcrumb-sep {
  color: rgba(246, 244, 239, .62);
}

.page-home .hero .breadcrumb-list li[aria-current] {
  color: rgba(246, 244, 239, .9);
}

.page-home .hero-eyebrow {
  color: var(--gold);
  margin: 0;
}

.page-home .hero-title {
  margin: 0;
  font-size: clamp(2.3rem, 7.2vw, 5.2rem);
  line-height: 1.04;
  letter-spacing: .015em;
  font-weight: 300;
}

.page-home .hero-title strong {
  font-weight: 900;
  color: var(--gold);
}

.page-home .hero-lede {
  margin: 0;
  max-width: 36em;
  color: rgba(246, 244, 239, .78);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 4px;
}

.page-home .hero-rail {
  display: grid;
  align-content: start;
  gap: 16px;
  padding-top: 18px;
  border-top: var(--hair-light);
}

.page-home .hero-rail-title {
  margin: 0;
  color: rgba(246, 244, 239, .55);
}

.page-home .hero-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-bottom: var(--hair-light);
}

.page-home .hero-toc li {
  border-top: var(--hair-light);
}

.page-home .hero-toc .toc-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 0;
  color: var(--snow);
  font-size: .95rem;
  text-decoration: none;
}

.page-home .hero-toc .toc-link::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--saffron);
}

.page-home .hero-toc .toc-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .28s ease;
}

.page-home .hero-toc .toc-link:hover::after,
.page-home .hero-toc .toc-link:focus-visible::after {
  transform: scaleX(1);
}

.page-home .hero-rail-media {
  margin: 0;
}

.page-home .hero-pano {
  margin: clamp(28px, 4vw, 52px) 0 0;
}

/* ---------- 通用区块头 ---------- */
.page-home .sec-head {
  display: grid;
  gap: 12px;
  max-width: 58ch;
  margin-bottom: clamp(26px, 3.4vw, 48px);
}

.page-home .sec-head .eyebrow {
  margin: 0;
  color: var(--saffron);
}

.page-home .sec-head .lede {
  margin: 0;
  color: var(--muted);
}

.page-home .media img {
  max-width: 100%;
  height: auto;
}

/* ---------- 一级分区 ---------- */
.page-home .cat-layout {
  display: grid;
  gap: clamp(24px, 3.2vw, 48px);
}

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

.page-home .cat-accordion {
  border-top: var(--hair-dark);
}

.page-home .cat-item {
  border-bottom: var(--hair-dark);
}

.page-home .cat-head {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-home .cat-accordion .accordion-btn {
  display: grid;
  grid-template-columns: 2.6rem 1fr auto;
  column-gap: 14px;
  row-gap: 6px;
  align-items: baseline;
  width: 100%;
  padding: 20px 0;
  text-align: left;
}

.page-home .cat-num {
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--saffron);
}

.page-home .cat-name {
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
}

.page-home .cat-need {
  grid-column: 2 / 3;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .cat-item[data-open] .cat-name {
  color: var(--saffron);
}

.page-home .cat-accordion .accordion-inner {
  padding: 0 0 22px;
}

.page-home .cat-accordion .accordion-inner p {
  margin: 0 0 12px;
  max-width: 46ch;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 候选池 ---------- */
.page-home .beta-eyebrow {
  margin: 0;
  color: var(--gold);
}

.page-home .beta-lede {
  margin: 16px 0 0;
  color: rgba(246, 244, 239, .76);
}

.page-home .beta-note {
  margin: 22px 0 0;
  padding: 16px 18px;
  background: var(--indigo-2);
  border-left: 2px solid var(--saffron);
  font-size: .92rem;
  line-height: 1.78;
  color: rgba(246, 244, 239, .88);
}

.page-home .beta-link {
  display: inline-block;
  margin-top: 18px;
  color: var(--gold);
}

.page-home .beta-grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 56px);
}

.page-home .beta-steps {
  display: grid;
}

.page-home .beta-step {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 6px 16px;
  padding: 20px 0;
  border-top: var(--hair-light);
}

.page-home .beta-step:last-of-type {
  border-bottom: var(--hair-light);
}

.page-home .beta-step-num {
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-home .beta-step-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--snow);
}

.page-home .beta-step-body {
  grid-column: 2 / 3;
  margin: 0;
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(246, 244, 239, .72);
}

.page-home .beta-feedback {
  margin: 22px 0 0;
  font-size: .93rem;
  line-height: 1.8;
  color: rgba(246, 244, 239, .72);
}

.page-home .beta-inline-link {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面端版本 ---------- */
.page-home .version-grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 52px);
}

.page-home .version-copy p {
  margin: 0 0 18px;
  max-width: 40ch;
  font-size: .98rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-home .version-copy .eyebrow {
  color: var(--saffron);
}

.page-home .spec-list {
  display: grid;
  margin: 24px 0 0;
}

.page-home .spec-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: var(--hair-dark);
}

.page-home .spec-row:last-child {
  border-bottom: var(--hair-dark);
}

.page-home .spec-key {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.page-home .spec-val {
  margin: 0;
  font-size: .96rem;
  color: var(--ink);
}

.page-home .version-foot {
  margin: 22px 0 0;
  font-size: .93rem;
  line-height: 1.8;
  color: var(--muted);
}

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

/* ---------- 三条主线 ---------- */
.page-home .sum-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-home .sum-row {
  display: grid;
  gap: 8px 22px;
  padding: 24px 0;
  border-top: var(--hair-dark);
}

.page-home .sum-row:last-child {
  border-bottom: var(--hair-dark);
}

.page-home .sum-num {
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--saffron);
}

.page-home .sum-title {
  margin: 0 0 8px;
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ink);
}

.page-home .sum-body {
  margin: 0;
  max-width: 46ch;
  font-size: .95rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 常见问题 ---------- */
.page-home .ask-grid {
  display: grid;
  gap: 1px;
  background: var(--warmgray);
  border: 1px solid var(--warmgray);
}

.page-home .ask-item {
  background: var(--snow);
  padding: clamp(20px, 2.6vw, 30px);
}

.page-home .ask-q {
  margin: 0 0 10px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.page-home .ask-a {
  margin: 0;
  font-size: .93rem;
  line-height: 1.82;
  color: var(--muted);
}

.page-home .ask-more {
  margin: 26px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-home .spec-row {
    grid-template-columns: 10rem 1fr;
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-home .sum-row {
    grid-template-columns: 3rem 1fr auto;
    align-items: baseline;
  }

  .page-home .sum-main {
    grid-column: 2 / 3;
  }
}

@media (min-width: 800px) {
  .page-home .ask-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .page-home .cat-accordion .accordion-btn {
    grid-template-columns: 2.6rem 9.5rem 1fr auto;
  }

  .page-home .cat-need {
    grid-column: auto;
  }
}

@media (min-width: 960px) {
  .page-home .hero-inner {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-home .hero-rail {
    position: sticky;
    top: var(--home-sticky-top);
  }

  .page-home .beta-grid {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-home .cat-layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-home .cat-figure {
    position: sticky;
    top: var(--home-sticky-top);
  }

  .page-home .version-grid {
    grid-template-columns: 6fr 6fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .hero-toc .toc-link::after {
    transition: none;
  }

  .page-home .hero-toc .toc-link:hover::after,
  .page-home .hero-toc .toc-link:focus-visible::after {
    transform: scaleX(1);
  }
}