.page-home {
  --ph-line: rgba(42, 33, 28, .14);
  --ph-paper-tex: repeating-linear-gradient(0deg, rgba(42, 33, 28, .028) 0 1px, transparent 1px 5px);
  --ph-shadow: 0 14px 32px rgba(42, 33, 28, .12);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.72;
}

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

.page-home h2,
.page-home h3 {
  margin: 0;
}

.page-home [data-reveal] {
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

/* ---------- 首屏门厅 ---------- */
.page-home .hero-gate {
  position: relative;
  padding-top: clamp(1.6rem, 5vw, 3.4rem);
  background-color: var(--paper);
  background-image: var(--ph-paper-tex);
  border-bottom: 1px solid var(--sand);
}

.page-home .hero-gate::before,
.page-home .hero-gate::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--cinnabar), rgba(181, 65, 47, 0));
  opacity: .55;
  pointer-events: none;
}

.page-home .hero-gate::before { left: clamp(.6rem, 3vw, 2rem); }
.page-home .hero-gate::after { right: clamp(.6rem, 3vw, 2rem); }

.page-home .hero-gate__inner {
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.8rem);
  padding-bottom: clamp(1.8rem, 5vw, 3.2rem);
  align-items: end;
}

.page-home .hero-kicker {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--azurite);
}

.page-home .hero-kicker__line {
  width: 34px;
  height: 2px;
  background: var(--ember);
  display: inline-block;
}

.page-home .hero-title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.35rem, 8.6vw, 5.8rem);
  line-height: 1;
  letter-spacing: .01em;
  margin: 0;
  color: var(--ink);
}

.page-home .hero-title span { display: block; }

.page-home .hero-title span + span {
  color: var(--azurite);
  margin-top: .12em;
}

.page-home .hero-lede {
  max-width: 34em;
  margin: 1.1rem 0 0;
  font-size: clamp(.96rem, 2vw, 1.06rem);
  color: var(--ink-soft);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.4rem;
}

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

.page-home .hero-gate__figure img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 86%, 86% 100%, 0 100%);
  filter: saturate(.95) contrast(1.02);
}

.page-home .placard {
  position: absolute;
  left: 0;
  bottom: 0;
  display: grid;
  gap: .15rem;
  max-width: 15rem;
  padding: .6rem .9rem;
  background: var(--paper);
  border-left: 3px solid var(--cinnabar);
  box-shadow: var(--ph-shadow);
}

.page-home .placard__label {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--ochre);
}

.page-home .placard__body {
  font-size: .8rem;
  color: var(--ink);
  line-height: 1.5;
}

.page-home .placard--stack {
  position: static;
  margin-top: .8rem;
  box-shadow: none;
  background: var(--paper-deep);
  border-left-color: var(--azurite);
}

.page-home .ticker {
  background: var(--ink);
  color: var(--paper);
}

.page-home .ticker__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .9rem;
  padding-top: .75rem;
  padding-bottom: .75rem;
  font-size: .84rem;
}

.page-home .ticker__mark {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  padding: .12rem .5rem;
  background: var(--cinnabar);
  color: var(--paper);
}

.page-home .ticker__text {
  margin: 0;
  flex: 1 1 16rem;
  color: rgba(246, 240, 228, .88);
}

.page-home .ticker__link {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 155, 74, .5);
  padding-bottom: 2px;
}

.page-home .ticker__link:hover { color: var(--paper); }

/* ---------- 四入口索引 ---------- */
.page-home .chapter-index {
  display: grid;
  gap: clamp(.7rem, 2vw, 1.1rem);
  grid-template-columns: 1fr;
  margin-top: clamp(1.4rem, 4vw, 2.4rem);
  margin-bottom: clamp(1.8rem, 5vw, 3rem);
}

.page-home .chapter-index__item {
  position: relative;
  display: grid;
  gap: .28rem;
  padding: 1.05rem 1.1rem 1.25rem;
  text-decoration: none;
  color: var(--ink);
  background: var(--paper-deep);
  border-top: 3px solid var(--cinnabar);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform .32s var(--ease), background .32s var(--ease);
}

.page-home .chapter-index__item:nth-child(2) { border-top-color: var(--azurite); }
.page-home .chapter-index__item:nth-child(3) { border-top-color: var(--ochre); }
.page-home .chapter-index__item:nth-child(4) { border-top-color: var(--pine); }

.page-home .chapter-index__item:hover,
.page-home .chapter-index__item:focus-visible {
  background: var(--paper);
  transform: translateY(-4px);
}

.page-home .chapter-index__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--ember);
}

.page-home .chapter-index__label {
  font-family: var(--font-display);
  font-size: 1.22rem;
  line-height: 1.25;
}

.page-home .chapter-index__meta {
  font-size: .8rem;
  line-height: 1.55;
  color: var(--ink-soft);
}

/* ---------- 章节骨架 ---------- */
.page-home .doorway {
  display: grid;
  gap: clamp(1.2rem, 4vw, 2.4rem);
  padding-bottom: clamp(2.4rem, 7vw, 4.5rem);
}

.page-home .doorway__index-title {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--ochre);
}

.page-home .doorway__list {
  display: flex;
  gap: .45rem;
  margin: 0;
  padding: 0 0 .35rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-home .doorway__link {
  display: inline-flex;
  align-items: baseline;
  gap: .4rem;
  padding: .38rem .7rem;
  white-space: nowrap;
  font-size: .82rem;
  color: var(--ink-soft);
  text-decoration: none;
  background: var(--paper-deep);
  border-left: 2px solid transparent;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.page-home .doorway__link:hover { color: var(--azurite); }

.page-home .doorway__link[aria-current="true"] {
  color: var(--cinnabar);
  background: var(--paper);
  border-left-color: var(--cinnabar);
}

.page-home .doorway__num {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--ember);
}

.page-home .section {
  padding-top: clamp(1.8rem, 5vw, 3rem);
  border-top: 1px solid var(--ph-line);
}

.page-home .section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-home .section__head {
  display: grid;
  gap: .5rem;
}

.page-home .chapter-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 6vw, 3.1rem);
  line-height: 1;
  color: var(--ember);
  opacity: .85;
  letter-spacing: .02em;
}

.page-home .section__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.7rem, 4.6vw, 2.75rem);
  line-height: 1.16;
  letter-spacing: .01em;
}

.page-home .section__lede {
  max-width: 38em;
  margin: .7rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(.94rem, 1.8vw, 1rem);
}

.page-home .section__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem 1.2rem;
  margin-top: clamp(1.2rem, 3vw, 1.8rem);
}

.page-home .back-top {
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--azurite);
  text-decoration: none;
  border-bottom: 1px solid var(--sand);
  padding-bottom: 2px;
}

/* ---------- 快速检索 ---------- */
.page-home .quickfind {
  display: grid;
  gap: 1.1rem;
  margin-top: 1.5rem;
}

.page-home .quickfind__cards {
  display: grid;
  gap: .8rem;
}

.page-home .quickfind__card {
  padding: .95rem 1rem 1.05rem;
  background: var(--paper-deep);
  border-left: 3px solid var(--azurite);
}

.page-home .quickfind__card p {
  margin: .35rem 0 0;
  font-size: .88rem;
  color: var(--ink-soft);
}

.page-home .quickfind__title {
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 400;
  line-height: 1.35;
}

.page-home .quickfind__card--hot {
  background: var(--pine);
  border-left-color: var(--ember);
}

.page-home .quickfind__card--hot .quickfind__title { color: var(--paper); }
.page-home .quickfind__card--hot p { color: rgba(246, 240, 228, .82); }

.page-home .quickfind__go {
  display: inline-block;
  margin-top: .7rem;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ochre);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 155, 74, .55);
  padding-bottom: 2px;
}

.page-home .quickfind__go:hover { color: var(--paper); }

.page-home .quickfind__figure {
  position: relative;
  margin: 0;
  align-self: start;
}

.page-home .quickfind__figure img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 14% 100%, 0 86%);
}

/* ---------- 时间线 ---------- */
.page-home .tl-wrap {
  position: relative;
  margin-top: 1.5rem;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ph-line);
  overflow: hidden;
}

.page-home .tl-wrap__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
  pointer-events: none;
}

.page-home .tl {
  position: relative;
  display: flex;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-home .tl:focus-visible {
  outline: 2px solid var(--azurite);
  outline-offset: 4px;
}

.page-home .tl__item {
  flex: 0 0 min(80vw, 290px);
  scroll-snap-align: start;
  display: grid;
  align-content: start;
  gap: .3rem;
  padding: 1.1rem 1rem 1.2rem 1.15rem;
  text-decoration: none;
  color: inherit;
  background: rgba(246, 240, 228, .84);
  border-left: 2px solid var(--sand);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.page-home .tl__item:first-child { border-left-color: var(--cinnabar); }

.page-home .tl__item:hover,
.page-home .tl__item:focus-visible {
  background: var(--paper-deep);
  border-left-color: var(--ember);
}

.page-home .tl__stamp {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--ink-soft);
}

.page-home .tl__ver {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--azurite);
}

.page-home .tl__item .tag {
  justify-self: start;
  font-size: .68rem;
}

.page-home .tl__title {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 400;
  line-height: 1.4;
  margin-top: .15rem;
}

.page-home .tl__summary {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin: 0;
  font-size: .84rem;
  color: var(--ink-soft);
  transition: max-height .4s var(--ease), opacity .3s var(--ease), margin-top .3s var(--ease);
}

.page-home .tl__item:hover .tl__summary,
.page-home .tl__item:focus-visible .tl__summary {
  max-height: 12em;
  opacity: 1;
  margin-top: .45rem;
}

/* ---------- 能力概览 ---------- */
.page-home .cap {
  display: grid;
  gap: .8rem;
  margin-top: 1.5rem;
}

.page-home .cap__card {
  padding: 1rem 1.05rem 1.15rem;
  background: var(--paper-deep);
  border-top: 2px solid var(--pine);
}

.page-home .cap__card:nth-child(2) { border-top-color: var(--azurite); }
.page-home .cap__card:nth-child(3) { border-top-color: var(--ochre); }
.page-home .cap__card:nth-child(4) { border-top-color: var(--cinnabar); }

.page-home .cap__card p {
  margin: .4rem 0 0;
  font-size: .88rem;
  color: var(--ink-soft);
}

.page-home .cap__title {
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 400;
}

.page-home .cap-board {
  display: grid;
  gap: 1rem;
  margin-top: 1.3rem;
  padding: 1rem;
  background: var(--ink);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-home .cap-board__figure { margin: 0; }

.page-home .cap-board__figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  opacity: .92;
}

.page-home .cap-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-home .cap-stat {
  display: grid;
  gap: .1rem;
  padding-left: .6rem;
  border-left: 2px solid var(--ochre);
}

.page-home .cap-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 3.2vw, 1.5rem);
  color: var(--paper);
  line-height: 1.2;
}

.page-home .cap-stat__label {
  font-size: .76rem;
  color: rgba(246, 240, 228, .7);
}

.page-home .cap-steps {
  display: grid;
  gap: .55rem;
  margin: 1.3rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-home .cap-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: .1rem .7rem;
  align-items: baseline;
  padding: .6rem .2rem .6rem 0;
  border-bottom: 1px dashed var(--ph-line);
}

.page-home .cap-step__num {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--ember);
}

.page-home .cap-step strong {
  font-weight: 500;
  font-size: .94rem;
}

.page-home .cap-step span:last-child {
  font-size: .82rem;
  color: var(--ink-soft);
}

/* ---------- 帮助与下载 ---------- */
.page-home .docs {
  margin-top: 1.5rem;
  display: grid;
  gap: .6rem;
}

.page-home .fold {
  background: var(--paper-deep);
  border-left: 3px solid var(--sand);
}

.page-home .fold[open] { border-left-color: var(--ember); }

.page-home .fold__summary {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .85rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.02rem;
  color: var(--ink);
}

.page-home .fold__summary::-webkit-details-marker { display: none; }

.page-home .fold__summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: .95rem;
  color: var(--cinnabar);
}

.page-home .fold[open] .fold__summary::before { content: "–"; }

.page-home .fold__body {
  padding: 0 1rem 1rem 2.1rem;
}

.page-home .fold__body p {
  margin: 0;
  font-size: .88rem;
  color: var(--ink-soft);
}

/* ---------- 联系 ---------- */
.page-home .reach {
  display: grid;
  gap: .8rem;
  margin-top: 1.5rem;
}

.page-home .reach__card {
  padding: 1rem 1.05rem 1.1rem;
  background: var(--paper-deep);
  border-left: 3px solid var(--azurite);
}

.page-home .reach__card--plain { border-left-color: var(--sand); }
.page-home .reach__card--pine {
  background: var(--pine);
  border-left-color: var(--ember);
}

.page-home .reach__label {
  margin: 0 0 .25rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--ochre);
}

.page-home .reach__value {
  margin: 0;
  font-size: .95rem;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-home .reach__value--mono {
  font-family: var(--font-mono);
  font-size: 1.02rem;
}

.page-home .reach__card--pine .reach__value { color: var(--paper); }

.page-home .reach__note {
  margin: .5rem 0 0;
  font-size: .8rem;
  color: var(--ink-soft);
}

.page-home .reach__list {
  margin: .4rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .35rem;
}

.page-home .reach__list li {
  position: relative;
  padding-left: .9rem;
  font-size: .86rem;
  color: rgba(246, 240, 228, .85);
}

.page-home .reach__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: 5px;
  height: 5px;
  background: var(--ochre);
  transform: rotate(45deg);
}

.page-home .copy-btn {
  margin-top: .55rem;
  padding: .22rem .6rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--azurite);
  background: transparent;
  border: 1px solid var(--sand);
  cursor: pointer;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-home .copy-btn:hover {
  color: var(--cinnabar);
  border-color: var(--cinnabar);
}

.page-home .copy-btn[data-copied] {
  color: var(--pine);
  border-color: var(--pine);
}

/* ---------- 移动端快捷入口 ---------- */
.page-home .quick-dock {
  position: fixed;
  left: .9rem;
  right: .9rem;
  bottom: .9rem;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: .82rem 1rem;
  font-family: var(--font-mono);
  font-size: .86rem;
  letter-spacing: .04em;
  color: var(--paper);
  text-decoration: none;
  background: var(--cinnabar);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  box-shadow: 0 10px 24px rgba(42, 33, 28, .28);
}

.page-home .quick-dock:hover { color: var(--paper); }

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-home .chapter-index { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .quickfind__cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .docs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .reach { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .section__head { grid-template-columns: auto minmax(0, 1fr); gap: .4rem 1.2rem; align-items: start; }
  .page-home .section__head .chapter-num { padding-top: .3rem; }
}

@media (min-width: 900px) {
  .page-home .hero-gate__inner { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
  .page-home .quickfind { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 1.4rem; }
  .page-home .cap { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .cap-board { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: center; }
  .page-home .cap-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .cap-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem 1rem; }
  .page-home .quick-dock { display: none; }
}

@media (min-width: 1024px) {
  .page-home .chapter-index { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .page-home .chapter-index__item:nth-child(even) { margin-top: 16px; }

  .page-home .doorway {
    grid-template-columns: minmax(0, 1fr) 224px;
    align-items: start;
  }

  .page-home .doorway__index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-h) + 1.4rem);
    padding-left: 1rem;
    border-left: 1px solid var(--sand);
  }

  .page-home .doorway__body {
    grid-column: 1;
    grid-row: 1;
    min-width: 0;
  }

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

  .page-home .doorway__link { white-space: normal; }

  .page-home .cap__card:nth-child(even) { margin-top: 1.6rem; }
  .page-home .cap-steps { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .page-home .tl__item { flex: 0 0 300px; }
}

@media (min-width: 1200px) {
  .page-home .hero-gate__inner { grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); }
  .page-home .section__lede { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }

  .page-home .chapter-index__item:hover,
  .page-home .chapter-index__item:focus-visible {
    transform: none;
  }
}
<<<END>>>