.page-home {
  --home-rule: rgba(217, 226, 222, 0.9);
  --home-cell: 96px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-home .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.page-home .home-context {
  padding-top: 14px;
}

.page-home .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
}

.page-home .breadcrumb-sep {
  color: var(--line-strong);
}

.page-home .breadcrumb [aria-current="page"] {
  color: var(--grass);
  font-weight: 700;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  padding: 26px 0 0;
  isolation: isolate;
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 520px;
  z-index: -1;
  background-image: repeating-linear-gradient(
    to right,
    var(--home-rule) 0 1px,
    transparent 1px var(--home-cell)
  );
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 92%);
  pointer-events: none;
}

.page-home .hero-grid {
  display: grid;
  gap: clamp(28px, 6vw, 64px);
  padding-bottom: clamp(28px, 4vw, 48px);
}

.page-home .hero-main {
  min-width: 0;
}

.page-home .hero-eyebrow {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}

.page-home .hero-eyebrow .mono {
  color: var(--grass);
  font-weight: 700;
}

.page-home .hero-main h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 7.4vw, 76px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--ink);
  max-width: 15em;
}

.page-home .hero-lead {
  margin: 0 0 26px;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ink-soft);
  font-weight: 400;
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}

.page-home .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home .hero-facts li {
  flex: 1 1 130px;
  padding: 12px 14px 12px 0;
  font-size: 13px;
  color: var(--ink-soft);
  border-right: 1px solid var(--line);
}

.page-home .hero-facts li:last-child {
  border-right: 0;
}

.page-home .hero-facts .mono {
  display: inline-block;
  margin-right: 4px;
  font-size: 17px;
  font-weight: 700;
  color: var(--grass);
}

.page-home .hero-index {
  min-width: 0;
  border-top: 2px solid var(--grass);
  padding-top: 14px;
}

.page-home .hero-index-title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.page-home .index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .index-list li {
  border-bottom: 1px solid var(--line);
}

.page-home .index-list a {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  grid-template-areas:
    "num label"
    "num desc";
  column-gap: 12px;
  padding: 12px 8px 12px 0;
  text-decoration: none;
  color: var(--ink);
  transition: background var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-home .index-list a:hover,
.page-home .index-list a:focus-visible {
  background: var(--mist);
  padding-left: 8px;
}

.page-home .index-num {
  grid-area: num;
  align-self: start;
  font-size: 14px;
  font-weight: 700;
  color: var(--sand);
  padding-top: 2px;
}

.page-home .index-label {
  grid-area: label;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-home .index-desc {
  grid-area: desc;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-top: 3px;
}

.page-home .hero-figure {
  padding-bottom: clamp(30px, 4vw, 52px);
}

.page-home .photo-frame {
  border: 1px solid var(--line);
  background: var(--sand-pale);
  overflow: hidden;
}

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

.page-home .photo-caption {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 章节轴 ---------- */
.page-home .home-rail {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: var(--paper);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .rail-inner {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 8px 0;
  scrollbar-width: none;
}

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

.page-home .home-rail .toc-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .home-rail .toc-link .mono {
  font-size: 11px;
  color: var(--sand);
  font-weight: 700;
}

.page-home .home-rail .toc-link:hover,
.page-home .home-rail .toc-link[aria-current="true"] {
  background: var(--mist);
  border-color: var(--line);
  color: var(--ink);
}

/* ---------- 通用章节头 ---------- */
.page-home .section {
  padding: clamp(44px, 6.5vw, 88px) 0;
}

.page-home .section--mist {
  background: var(--mist);
}

.page-home .section--sand {
  background: var(--sand-pale);
}

.page-home .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-home .section-index {
  margin: 0;
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--grass);
  letter-spacing: -0.02em;
}

.page-home .section-index::after {
  content: "";
  display: block;
  width: 42px;
  height: 3px;
  margin-top: 10px;
  background: var(--sand);
}

.page-home .section-title {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-home .section-sub {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 分类卷轴 ---------- */
.page-home .cat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-home .chip {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  background: var(--paper);
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .chip:hover,
.page-home .chip:focus-visible {
  background: var(--sand-pale);
  border-color: var(--sand);
}

.page-home .cat-scroller {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 6px 0 28px;
  scrollbar-width: thin;
}

.page-home .cat-card {
  flex: 0 0 min(82%, 320px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
  min-width: 0;
}

.page-home .cat-card:nth-child(even) {
  margin-top: 26px;
}

.page-home .cat-card--photo .photo-frame {
  margin-bottom: 6px;
}

.page-home .cat-num {
  margin: 0;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--grass);
}

.page-home .cat-title {
  margin: 0;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-home .cat-count {
  margin: 0;
  font-size: 13px;
  color: var(--ink-soft);
}

.page-home .cat-count .mono {
  font-size: 18px;
  font-weight: 700;
  color: var(--clay);
  margin-right: 2px;
}

.page-home .cat-text {
  margin: 0;
  flex: 1 1 auto;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-home .cat-price {
  margin: 6px 0 2px;
}

.page-home .badge {
  display: inline-block;
  font-size: 12.5px;
  line-height: 1.5;
  border-radius: 2px;
}

.page-home .cat-price .badge--price {
  padding: 5px 10px;
  background: var(--sand);
  border: 1px solid rgba(16, 38, 58, 0.14);
  color: var(--ink);
  font-weight: 700;
  font-size: 13.5px;
}

.page-home .cat-link {
  align-self: flex-start;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--grass);
  text-decoration: none;
  border-bottom: 1px solid var(--grass);
  padding-bottom: 1px;
}

.page-home .cat-link:hover {
  color: var(--forest);
  border-bottom-color: var(--sand);
}

/* ---------- 刻度板 ---------- */
.page-home .board-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.page-home .board-row {
  display: grid;
  gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .board-name {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-home .badge--note {
  padding: 2px 8px;
  background: var(--mist);
  border: 1px solid var(--line-strong);
  color: var(--forest);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.page-home .board-note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-home .board-row > .badge--price {
  justify-self: start;
  padding: 5px 10px;
  background: var(--sand);
  border: 1px solid rgba(16, 38, 58, 0.14);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
}

.page-home .board-meter {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.page-home .board-count {
  flex: 0 0 auto;
  font-size: 13px;
  font-weight: 700;
  color: var(--clay);
}

.page-home .meter {
  display: block;
  flex: 1 1 auto;
  height: 7px;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: 1px;
  overflow: hidden;
}

.page-home .meter-bar {
  display: block;
  height: 100%;
  width: calc(var(--v, 0.5) * 100%);
  background: linear-gradient(90deg, var(--grass), var(--sand));
  transition: width 520ms var(--ease);
}

.page-home .board-update {
  margin: 22px 0 0;
  padding: 12px 0 12px 14px;
  border-left: 3px solid var(--sand);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-home .board-update .mono {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 三步流程 ---------- */
.page-home .steps {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .step {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-home .step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--grass);
}

.page-home .step-num {
  margin: 4px 0 10px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-home .step-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.page-home .step-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 小屏预览 ---------- */
.page-home .mobile-grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-home .mobile-copy {
  min-width: 0;
}

.page-home .mobile-copy .section-title {
  margin-top: 12px;
}

.page-home .mobile-list {
  margin: 22px 0 0;
  padding: 0 0 0 4px;
  list-style: none;
  border-left: 2px solid var(--line-strong);
}

.page-home .mobile-list li {
  position: relative;
  margin-bottom: 14px;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .mobile-list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 2px;
  width: 6px;
  height: 6px;
  background: var(--sand);
}

.page-home .mobile-note {
  margin: 20px 0 24px;
  padding: 14px 16px;
  background: var(--sand-pale);
  border: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink);
}

.page-home .phone-figure {
  margin: 0;
  justify-self: center;
  width: 100%;
  max-width: 340px;
}

.page-home .phone-shell {
  border: 10px solid var(--ink);
  border-radius: 28px;
  background: var(--ink);
  overflow: hidden;
  box-shadow: 0 18px 40px -30px rgba(16, 38, 58, 0.85);
}

.page-home .phone-shell img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 18px;
  background: var(--mist);
}

.page-home .phone-figure .photo-caption {
  text-align: center;
}

/* ---------- 合作与答疑 ---------- */
.page-home .connect-grid {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  align-items: start;
}

.page-home .connect-main {
  min-width: 0;
}

.page-home .connect-main .section-head {
  margin-bottom: 22px;
}

.page-home .connect-cards {
  display: grid;
  gap: 16px;
}

.page-home .connect-card {
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-soft);
}

.page-home .connect-tag {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--clay);
  font-weight: 700;
}

.page-home .connect-card .card-title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.page-home .connect-card .card-text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-home .connect-link {
  display: inline-block;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--grass);
  text-decoration: none;
  border-bottom: 1px solid var(--grass);
}

.page-home .connect-link:hover {
  color: var(--forest);
  border-bottom-color: var(--sand);
}

.page-home .connect-faq {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line-strong);
}

.page-home .connect-faq-title {
  margin: 0 0 10px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.page-home .faq-points {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .faq-points li {
  border-bottom: 1px dashed var(--line-strong);
}

.page-home .faq-points a {
  display: block;
  padding: 10px 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink);
  text-decoration: none;
}

.page-home .faq-points a::before {
  content: "→";
  margin-right: 8px;
  color: var(--sand);
  font-family: var(--font-mono);
}

.page-home .faq-points a:hover {
  color: var(--grass);
}

.page-home .connect-mail {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-home .connect-mail .mono {
  color: var(--ink);
  font-weight: 700;
  word-break: break-all;
}

.page-home .connect-aside {
  min-width: 0;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-home .hero-facts li {
    flex: 0 1 auto;
    padding: 12px 22px;
  }

  .page-home .hero-facts li:first-child {
    padding-left: 0;
  }

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

  .page-home .connect-cards .connect-card:nth-child(2) {
    margin-top: 28px;
  }

  .page-home .cat-card {
    flex-basis: 320px;
  }
}

@media (min-width: 860px) {
  .page-home .section-head {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 24px;
    align-items: start;
  }

  .page-home .board-row {
    grid-template-columns: minmax(0, 1fr) 150px minmax(190px, 260px);
    align-items: center;
    gap: 22px;
  }

  .page-home .board-row > .badge--price {
    justify-self: start;
  }

  .page-home .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-home .step:nth-child(2) {
    margin-top: 22px;
  }
}

@media (min-width: 980px) {
  .page-home .hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
  }

  .page-home .hero-main h1 {
    max-width: 12em;
  }

  .page-home .mobile-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.62fr);
  }

  .page-home .connect-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
  }

  .page-home .home-rail .toc-link {
    font-size: 13.5px;
    padding: 7px 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .meter-bar,
  .page-home .index-list a,
  .page-home .home-rail .toc-link,
  .page-home .chip {
    transition: none;
  }
}