.page-home{
  --home-dark:var(--indigo-900);
  --home-dark-2:var(--indigo-700);
  --home-on-dark:var(--sand);
  --home-gap:16px;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-body);
  overflow-x:hidden;
}
.page-home *{box-sizing:border-box;}
.page-home img{max-width:100%;height:auto;display:block;}

/* 首屏路径带 */
.page-home .home-lead{
  position:relative;
  isolation:isolate;
  padding:40px 0 56px;
  background:linear-gradient(158deg,var(--indigo-900) 0%,var(--indigo-700) 68%,#1d3157 100%);
  color:var(--home-on-dark);
  overflow:hidden;
}
.page-home .home-lead__bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.42;
  z-index:-1;
}
.page-home .home-lead__inner{position:relative;}
.page-home .home-context{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  font-size:.75rem;
  letter-spacing:.08em;
  color:var(--mist);
}
.page-home .home-context__dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 0 4px rgba(201,162,39,.18);
}
.page-home .home-lead__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2.2rem,7.6vw,4.4rem);
  line-height:1.14;
  letter-spacing:-.01em;
  color:var(--home-on-dark);
}
.page-home .home-lead__lede{
  max-width:36ch;
  margin:20px 0 0;
  font-size:1rem;
  line-height:1.8;
  color:rgba(244,235,221,.84);
}
.page-home .home-lead__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:28px;
}
.page-home .home-lead__actions .btn--ghost{
  border-color:rgba(244,235,221,.42);
  color:var(--home-on-dark);
}
.page-home .home-lead__actions .btn--ghost:hover{
  border-color:var(--turquoise-soft);
  color:var(--turquoise-soft);
}

/* 路径带 */
.page-home .pathband{position:relative;margin-top:48px;}
.page-home .pathband__list{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px 12px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-home .pathband__item{
  position:relative;
  padding-top:10px;
  border-top:2px solid rgba(200,210,224,.32);
  min-width:0;
}
.page-home .pathband__item:first-child{border-top-color:var(--crimson);}
.page-home .pathband__node{
  display:flex;
  flex-direction:column;
  gap:4px;
  text-decoration:none;
  color:var(--home-on-dark);
  padding:2px 0 6px;
  border-radius:var(--radius);
  transition:transform .12s ease,color .12s ease;
}
.page-home .pathband__node:hover,
.page-home .pathband__node:focus-visible{transform:translateY(-2px);color:var(--turquoise-soft);}
.page-home .pathband__node:focus-visible{outline:2px solid var(--turquoise-soft);outline-offset:4px;}
.page-home .pathband__num{
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:.75rem;
  letter-spacing:.14em;
  color:var(--gold);
}
.page-home .pathband__node.is-current .pathband__num{color:var(--crimson-soft);}
.page-home .pathband__label{
  font-family:var(--font-display);
  font-weight:700;
  font-size:1rem;
  line-height:1.3;
}
.page-home .pathband__node.is-current .pathband__label{color:var(--crimson-soft);}
.page-home .pathband__hint{display:none;}

/* 主体双栏 */
.page-home .home-body{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:32px;
  padding:48px 0 24px;
}
.page-home .home-rail{min-width:0;}
.page-home .home-rail__title{
  margin:0 0 12px;
  font-size:.7rem;
  letter-spacing:.16em;
  color:var(--ink-mute);
}
.page-home .index-rail{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:4px 12px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-home .home-rail__item{min-width:0;}
.page-home .index-rail__link{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding:8px 0 8px 10px;
  border-left:2px solid var(--line);
  font-size:.86rem;
  line-height:1.4;
  color:var(--ink-soft);
  text-decoration:none;
  transition:border-color .12s ease,color .12s ease;
}
.page-home .index-rail__link:hover{color:var(--link);border-left-color:var(--turquoise);}
.page-home .index-rail__link:focus-visible{outline:2px solid var(--focus);outline-offset:2px;}
.page-home .index-rail__link.is-active{
  color:var(--crimson);
  border-left-color:var(--crimson);
  font-weight:500;
}
.page-home .home-rail__num{
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:.72rem;
  color:var(--gold-ink);
}
.page-home .index-rail__link.is-active .home-rail__num{color:var(--crimson);}
.page-home .home-main{min-width:0;}

/* 章节通用 */
.page-home .home-section{
  padding-top:8px;
  margin-bottom:64px;
}
.page-home .home-section:last-child{margin-bottom:0;}
.page-home .home-section__head{max-width:44rem;}
.page-home .home-section__kicker{
  margin:0 0 10px;
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:.72rem;
  letter-spacing:.16em;
  color:var(--crimson);
}
.page-home .home-section__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.6rem,4.6vw,2.4rem);
  line-height:1.24;
  color:var(--ink);
}
.page-home .home-section__lede{
  margin:14px 0 0;
  font-size:.98rem;
  line-height:1.8;
  color:var(--ink-soft);
}

/* 八类错位卡片 */
.page-home .cat-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:14px;
  margin:32px 0 0;
  padding:0;
  list-style:none;
}
.page-home .cat{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:20px 18px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  min-width:0;
  transition:transform .12s ease,border-color .12s ease;
}
.page-home .cat:hover{transform:translateY(-2px);border-color:var(--turquoise);}
.page-home .cat__idx{
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:.72rem;
  letter-spacing:.12em;
  color:var(--gold-ink);
}
.page-home .cat__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.12rem;
  line-height:1.4;
  color:var(--ink);
}
.page-home .cat__body{
  margin:0;
  font-size:.9rem;
  line-height:1.75;
  color:var(--ink-soft);
}
.page-home .cat__link{
  margin-top:auto;
  padding-top:8px;
  font-size:.82rem;
  color:var(--link);
  text-decoration:none;
  border-bottom:1px solid transparent;
  align-self:flex-start;
}
.page-home .cat__link:hover{border-bottom-color:var(--turquoise);}
.page-home .cat__link:focus-visible{outline:2px solid var(--focus);outline-offset:3px;}
.page-home .cat--h{
  background:var(--surface-2);
  border-left:3px solid var(--turquoise);
}

/* 三步 */
.page-home .steps{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:20px;
  margin:32px 0 0;
  padding:0;
  list-style:none;
}
.page-home .step-anchor{
  position:relative;
  padding:18px 18px 20px;
  background:var(--bg-deep);
  border:1px solid var(--line);
  border-radius:var(--radius);
  min-width:0;
}
.page-home .step-anchor__num{
  display:block;
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:3.2rem;
  font-weight:700;
  line-height:.9;
  color:var(--crimson);
  opacity:.9;
}
.page-home .step-anchor__title{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.16rem;
  color:var(--ink);
}
.page-home .step-anchor__body{
  margin:8px 0 0;
  font-size:.9rem;
  line-height:1.75;
  color:var(--ink-soft);
}

/* 图片 */
.page-home .home-figure{
  margin:28px 0 0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--surface-2);
}
.page-home .home-figure img{
  width:100%;
  height:auto;
  object-fit:cover;
  aspect-ratio:3 / 2;
}
.page-home .home-figure__cap{
  padding:12px 16px;
  font-size:.8rem;
  line-height:1.6;
  color:var(--ink-mute);
  border-top:1px solid var(--line);
}
.page-home .home-figure--narrow img{aspect-ratio:10 / 7;}

/* 深色同步区块 */
.page-home .home-section--dark{
  padding:28px 20px 32px;
  background:linear-gradient(160deg,var(--indigo-900),var(--indigo-700));
  color:var(--sand);
  border-radius:var(--radius);
}
.page-home .home-section--dark .home-section__kicker{color:var(--gold);}
.page-home .home-section--dark .home-section__title{color:var(--sand);}
.page-home .home-section--dark .home-section__lede{color:rgba(244,235,221,.82);}
.page-home .sync-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:24px;
  margin-top:24px;
}
.page-home .sync-grid__text{
  margin:0;
  font-size:.94rem;
  line-height:1.85;
  color:rgba(244,235,221,.86);
  max-width:38ch;
}
.page-home .sync-stats{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
  margin:0;
  padding:0;
  list-style:none;
}
.page-home .sync-stats__item{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:14px 12px;
  border:1px solid rgba(200,210,224,.24);
  border-radius:var(--radius);
  background:rgba(14,27,51,.42);
  min-width:0;
}
.page-home .sync-stats__num{
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:1.6rem;
  font-weight:700;
  line-height:1;
  color:var(--gold);
}
.page-home .sync-stats__label{
  font-size:.74rem;
  line-height:1.5;
  color:rgba(244,235,221,.78);
}

/* 规则与帮助 */
.page-home .rules-dual{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:16px;
  margin-top:32px;
}
.page-home .rules-panel{
  padding:20px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-top:3px solid var(--crimson);
  border-radius:var(--radius);
  min-width:0;
}
.page-home .rules-panel--alt{border-top-color:var(--turquoise);}
.page-home .rules-panel__tag{
  margin:0 0 10px;
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--ink-mute);
}
.page-home .rules-panel__title{
  margin:0 0 12px;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.2rem;
  color:var(--ink);
}
.page-home .rules-panel__body{
  margin:0;
  font-size:.9rem;
  line-height:1.8;
  color:var(--ink-soft);
}
.page-home .rules-list{margin:0;padding:0;list-style:none;}
.page-home .rules-list__item{
  display:flex;
  gap:10px;
  padding:9px 0;
  border-bottom:1px dashed var(--line);
  font-size:.88rem;
  line-height:1.7;
  color:var(--ink-soft);
}
.page-home .rules-list__item:last-child{border-bottom:0;}
.page-home .rules-list__num{
  flex:0 0 auto;
  width:20px;height:20px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  background:rgba(178,58,72,.1);
  color:var(--crimson);
  font-family:var(--font-num);
  font-size:.72rem;
}
.page-home .rules-panel__link{margin-top:16px;display:inline-block;}

.page-home .timeline{
  margin:28px 0 0;
  padding:0 0 0 18px;
  list-style:none;
  border-left:1px solid var(--line-strong);
}
.page-home .timeline__item{
  position:relative;
  padding:0 0 20px 8px;
}
.page-home .timeline__item:last-child{padding-bottom:0;}
.page-home .timeline__item::before{
  content:"";
  position:absolute;
  left:-23px;
  top:6px;
  width:8px;height:8px;
  border-radius:50%;
  background:var(--gold);
  box-shadow:0 0 0 3px rgba(201,162,39,.16);
}
.page-home .timeline__time{
  display:block;
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--gold-ink);
}
.page-home .timeline__title{
  margin:6px 0 0;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.02rem;
  color:var(--ink);
}
.page-home .timeline__body{
  margin:6px 0 0;
  font-size:.88rem;
  line-height:1.75;
  color:var(--ink-soft);
}

/* 速度 */
.page-home .speed-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:14px;
  margin:32px 0 0;
  padding:0;
  list-style:none;
}
.page-home .speed-card{
  padding:22px 18px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  min-width:0;
}
.page-home .speed-card__num{
  display:block;
  font-family:var(--font-num);
  font-feature-settings:"tnum";
  font-size:2.6rem;
  font-weight:700;
  line-height:1;
  color:var(--turquoise);
}
.page-home .speed-card__unit{
  font-size:1rem;
  margin-left:4px;
  color:var(--ink-mute);
}
.page-home .speed-card__title{
  margin:12px 0 0;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.06rem;
  color:var(--ink);
}
.page-home .speed-card__body{
  margin:8px 0 0;
  font-size:.88rem;
  line-height:1.75;
  color:var(--ink-soft);
}

/* 起点 */
.page-home .start-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:14px;
  margin:32px 0 0;
  padding:0;
  list-style:none;
}
.page-home .start-card{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding:22px 18px;
  background:var(--surface);
  border:1px solid var(--line);
  border-left:2px solid var(--turquoise);
  border-radius:var(--radius);
  min-width:0;
  transition:transform .12s ease,border-left-color .12s ease;
}
.page-home .start-card:hover{transform:translateY(-2px);border-left-color:var(--crimson);}
.page-home .start-card__who{
  margin:0;
  font-size:.72rem;
  letter-spacing:.14em;
  color:var(--crimson);
}
.page-home .start-card__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:700;
  font-size:1.1rem;
  line-height:1.4;
  color:var(--ink);
}
.page-home .start-card__body{
  margin:0;
  font-size:.88rem;
  line-height:1.75;
  color:var(--ink-soft);
}
.page-home .start-card__link{
  margin-top:auto;
  padding-top:10px;
  font-size:.84rem;
  color:var(--link);
  text-decoration:none;
  align-self:flex-start;
  border-bottom:1px solid transparent;
}
.page-home .start-card__link:hover{border-bottom-color:var(--turquoise);}
.page-home .start-card__link:focus-visible{outline:2px solid var(--focus);outline-offset:3px;}

/* 页尾行动区 */
.page-home .home-cta{
  position:relative;
  isolation:isolate;
  margin-top:64px;
  padding:56px 0;
  overflow:hidden;
  background:var(--sand-hi);
  border-top:1px solid var(--line);
}
.page-home .home-cta__bg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.35;
  z-index:-1;
}
.page-home .home-cta__inner{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:24px;
  align-items:end;
}
.page-home .home-cta__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,4.2vw,2.2rem);
  line-height:1.28;
  color:var(--ink);
}
.page-home .home-cta__body{
  margin:12px 0 0;
  max-width:40ch;
  font-size:.92rem;
  line-height:1.85;
  color:var(--ink-soft);
}
.page-home .home-cta__actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}

/* 平板及以上 */
@media (min-width:720px){
  .page-home .home-lead{padding:56px 0 72px;}
  .page-home .pathband__list{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px 16px;}
  .page-home .cat-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:16px;}
  .page-home .cat--a{grid-column:span 7;}
  .page-home .cat--b{grid-column:span 5;}
  .page-home .cat--c{grid-column:span 5;}
  .page-home .cat--d{grid-column:span 7;}
  .page-home .cat--e{grid-column:span 4;}
  .page-home .cat--f{grid-column:span 4;}
  .page-home .cat--g{grid-column:span 4;}
  .page-home .cat--h{grid-column:span 12;}
  .page-home .steps{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;}
  .page-home .step-anchor__num{font-size:4.2rem;}
  .page-home .sync-grid{grid-template-columns:1.1fr .9fr;align-items:start;gap:28px;}
  .page-home .rules-dual{grid-template-columns:repeat(2,minmax(0,1fr));}
  .page-home .speed-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-home .start-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-home .home-cta__inner{grid-template-columns:1.4fr auto;gap:32px;}
}

/* 桌面 */
@media (min-width:980px){
  .page-home .home-lead{padding:64px 0 84px;}
  .page-home .pathband{margin-top:64px;}
  .page-home .pathband__list{grid-template-columns:repeat(6,minmax(0,1fr));gap:0 16px;}
  .page-home .pathband::before{
    content:"";
    position:absolute;
    top:0;
    left:0;
    right:0;
    height:1px;
    background:linear-gradient(90deg,var(--crimson) 0 15%,rgba(200,210,224,.4) 15% 100%);
  }
  .page-home .pathband__item{border-top:0;padding-top:22px;}
  .page-home .pathband__item::before{
    content:"";
    position:absolute;
    top:2px;
    left:0;
    width:7px;height:7px;
    border-radius:50%;
    background:var(--mist);
  }
  .page-home .pathband__item:first-child::before{
    background:var(--crimson);
    box-shadow:0 0 0 4px rgba(178,58,72,.18);
  }
  .page-home .pathband__hint{
    display:block;
    font-size:.72rem;
    line-height:1.5;
    color:rgba(244,235,221,.6);
    max-height:0;
    opacity:0;
    overflow:hidden;
    transition:opacity .12s ease,max-height .12s ease;
  }
  .page-home .pathband__node:hover .pathband__hint,
  .page-home .pathband__node:focus-visible .pathband__hint{max-height:3.6em;opacity:1;}

  .page-home .home-body{
    grid-template-columns:196px minmax(0,1fr);
    gap:48px;
    padding:72px 0 32px;
  }
  .page-home .home-rail{
    position:sticky;
    top:96px;
    align-self:start;
  }
  .page-home .index-rail{grid-template-columns:minmax(0,1fr);gap:2px;}
  .page-home .home-section{margin-bottom:88px;}
  .page-home .step-anchor__num{font-size:5.2rem;}
  .page-home .home-section--dark{padding:40px 36px 44px;}
  .page-home .home-cta{margin-top:88px;padding:80px 0;}
}

/* 减少动效 */
@media (prefers-reduced-motion:reduce){
  .page-home .pathband__node,
  .page-home .cat,
  .page-home .start-card{transition:none;}
  .page-home .pathband__node:hover,
  .page-home .cat:hover,
  .page-home .start-card:hover{transform:none;}
}