.page-home{
  --home-arc: rgba(35,66,92,.95);
  --home-panel: #0E2233;
  --home-panel-hi: #142F47;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-home .hero{
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: 28px 48px;
  background: var(--ink-900);
}
.page-home .hero__texture{
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .32;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, #000 42%, transparent 94%);
  mask-image: linear-gradient(180deg, #000 0%, #000 42%, transparent 94%);
}
.page-home .hero__grid{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.page-home .hero__eyebrow{
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-home .hero h1{
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 38px;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
}
.page-home .hero__lede{
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(244,247,249,.84);
}
.page-home .hero__actions{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-block-start: 24px;
}
.page-home .hero__sub{
  font-size: 14px;
  color: var(--grey-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-700);
  padding-block-end: 2px;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-home .hero__sub:hover,
.page-home .hero__sub:focus-visible{
  color: var(--cyan);
  border-color: var(--cyan);
}
.page-home .hero__meta{
  margin: 20px 0 0;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--grey-blue);
}
.page-home .hero__notes{
  display: flex;
  align-items: center;
  gap: 14px;
}
.page-home .hero__stamp{
  margin: 0;
  padding: 5px 10px;
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
  white-space: nowrap;
}
.page-home .hero__vertical{
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grey-blue);
}

/* ---------- 环形主入口 ---------- */
.page-home .ring-card{
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  padding: 18px;
}
.page-home .ring-card__label{
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--grey-blue);
}
.page-home .ring-entry{
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1 / 1;
  margin-inline: auto;
}
.page-home .ring-entry__svg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.page-home .ring-arc{
  fill: none;
  stroke: var(--home-arc);
  stroke-width: 2.6;
  stroke-linecap: round;
  transition: stroke .2s var(--ease);
}
.page-home .ring-entry__core{
  position: absolute;
  inset: 0;
  margin: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 2px;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.02em;
}
.page-home .ring-entry__mark{
  font-size: 34px;
  line-height: 1;
  color: var(--cyan);
}
.page-home .ring-entry__word{
  font-size: 13px;
  letter-spacing: .18em;
  color: rgba(244,247,249,.72);
}
.page-home .ring-node{
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  font-size: 12px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--paper);
  background: var(--ink-900);
  border: 1px solid var(--ink-700);
  border-radius: 999px;
  translate: -50% -50%;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-home .ring-node--dl{ top: 20%; left: 50%; }
.page-home .ring-node--search{ top: 50%; left: 80%; }
.page-home .ring-node--list{ top: 80%; left: 50%; }
.page-home .ring-node--fb{ top: 50%; left: 20%; }
.page-home .ring-node:hover,
.page-home .ring-node:focus-visible{
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
}
.page-home .ring-node:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}
.page-home .ring-entry:has(.ring-node--dl:hover) .ring-arc--dl,
.page-home .ring-entry:has(.ring-node--dl:focus-visible) .ring-arc--dl,
.page-home .ring-entry:has(.ring-node--search:hover) .ring-arc--search,
.page-home .ring-entry:has(.ring-node--search:focus-visible) .ring-arc--search,
.page-home .ring-entry:has(.ring-node--list:hover) .ring-arc--list,
.page-home .ring-entry:has(.ring-node--list:focus-visible) .ring-arc--list,
.page-home .ring-entry:has(.ring-node--fb:hover) .ring-arc--fb,
.page-home .ring-entry:has(.ring-node--fb:focus-visible) .ring-arc--fb{
  stroke: var(--cyan);
}

/* ---------- 检索卡 ---------- */
.page-home .search-panel{
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.page-home .search-panel__label{
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-home .search-panel h2{
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -.015em;
  color: var(--paper);
}
.page-home .search-panel__row{
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-home .search-field{
  flex: 1 1 auto;
  min-width: 0;
  padding: 13px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper);
  background: rgba(10,26,43,.9);
  border: 1.5px solid var(--cyan);
  border-radius: var(--radius-sm);
  transition: border-color .18s var(--ease);
}
.page-home .search-field::placeholder{
  color: rgba(157,176,190,.9);
}
.page-home .search-field:focus{
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-width: 2px;
}
.page-home .search-panel__hint{
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244,247,249,.78);
}
.page-home .hot-words{
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-home .hot-words a{
  display: inline-block;
  text-decoration: none;
}
.page-home .hot-words a:hover{
  background: var(--cyan);
  color: var(--ink-900);
}
.page-home .search-panel__stat{
  margin: 16px 0 0;
  padding-block-start: 14px;
  border-top: 1px dashed var(--ink-700);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--grey-blue);
}

/* ---------- 章节通用 ---------- */
.page-home .section{
  padding-block: 56px;
  border-top: 1px solid rgba(35,66,92,.5);
}
.page-home .section__head{
  display: grid;
  gap: 8px;
  margin-block-end: 26px;
}
.page-home .section__num{
  margin: 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--orange);
}
.page-home .section__title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 26px;
  line-height: 1.24;
  letter-spacing: -.02em;
  color: var(--paper);
}
.page-home .section__note{
  margin: 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--grey-blue);
}

/* ---------- 01 四条路径 ---------- */
.page-home .paths__body{
  display: grid;
  gap: 22px;
}
.page-home .paths__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-home .paths__item{
  position: relative;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  padding: 18px;
  transition: transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-home .paths__item::before{
  content: "";
  position: absolute;
  top: 22px;
  left: 0;
  width: 3px;
  height: 22px;
  border-radius: 999px;
  background: var(--cyan);
}
.page-home .paths__item:nth-child(3)::before{
  background: var(--orange);
}
.page-home .paths__item:nth-child(4)::before{
  background: var(--slate);
}
.page-home .paths__item:hover{
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: var(--home-panel-hi);
}
.page-home .paths__item h3{
  margin: 0 0 8px;
  padding-inline-start: 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-home .paths__item p{
  margin: 0 0 12px;
  padding-inline-start: 12px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(244,247,249,.8);
}
.page-home .paths__link{
  margin-inline-start: 12px;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61,242,210,.4);
  padding-block-end: 2px;
}
.page-home .paths__link:hover{
  border-color: var(--cyan);
}
.page-home .paths__figure{
  margin: 0;
}
.page-home .paths__figure img{
  border-radius: var(--radius-md);
}

/* ---------- 02 目录预览 ---------- */
.page-home .catalog__group{
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--cyan);
}
.page-home .catalog__grid{
  list-style: none;
  margin: 0 0 34px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: start;
}
.page-home .catalog__grid:last-child{
  margin-block-end: 0;
}
.page-home .catalog__item a{
  display: grid;
  gap: 6px;
  padding: 16px;
  text-decoration: none;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  transition: transform .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}
.page-home .catalog__item a:hover,
.page-home .catalog__item a:focus-visible{
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: var(--home-panel-hi);
}
.page-home .catalog__name{
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}
.page-home .catalog__count{
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--cyan);
}
.page-home .catalog__time{
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--grey-blue);
}
.page-home .catalog__grid--tools .catalog__item a{
  border-color: rgba(255,138,61,.34);
}
.page-home .catalog__grid--tools .catalog__item a:hover,
.page-home .catalog__grid--tools .catalog__item a:focus-visible{
  border-color: var(--orange);
}
.page-home .catalog__grid--tools .catalog__count{
  color: var(--orange);
}

/* ---------- 03 适配清单 ---------- */
.page-home .adapt__card{
  display: grid;
  gap: 24px;
  padding: 22px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(61,242,210,.10), transparent 62%),
    linear-gradient(150deg, var(--ink-800) 0%, var(--home-panel) 100%);
}
.page-home .adapt__status{
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}
.page-home .adapt__text h2{
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 24px;
  line-height: 1.28;
  letter-spacing: -.02em;
  color: var(--paper);
}
.page-home .adapt__text > p{
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(244,247,249,.82);
}
.page-home .adapt__tiers{
  display: grid;
  gap: 10px;
  margin: 18px 0;
}
.page-home .adapt__tier{
  padding: 14px;
  background: rgba(10,26,43,.72);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
}
.page-home .adapt__tier dt{
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--cyan);
}
.page-home .adapt__tier dd{
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.62;
  color: rgba(244,247,249,.8);
}
.page-home .adapt__foot{
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
  padding-inline-start: 12px;
  border-inline-start: 2px solid var(--orange);
}
.page-home .adapt__figure{
  margin: 0;
}
.page-home .adapt__figure img{
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--ink-700);
}

/* ---------- 04 反馈 ---------- */
.page-home .feedback__panel{
  display: grid;
  gap: 20px;
  padding: 22px;
  border: 1px solid rgba(255,138,61,.36);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(165deg, rgba(255,138,61,.12), rgba(10,26,43,0) 58%),
    var(--ink-800);
}
.page-home .feedback__tag{
  margin: 0 0 10px;
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--orange);
  background: rgba(255,138,61,.12);
}
.page-home .feedback__intro p:last-child{
  margin: 0;
  font-size: 15px;
  line-height: 1.76;
  color: rgba(244,247,249,.84);
}
.page-home .feedback__stats{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.page-home .feedback__stats li{
  display: grid;
  gap: 6px;
  padding: 16px;
  background: var(--ink-900);
}
.page-home .feedback__stats span{
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--grey-blue);
}
.page-home .feedback__stats strong{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-home .feedback__actions{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.page-home .feedback__link{
  font-size: 14px;
  color: var(--grey-blue);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-700);
  padding-block-end: 2px;
}
.page-home .feedback__link:hover,
.page-home .feedback__link:focus-visible{
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 05 双端 ---------- */
.page-home .duo__body{
  display: grid;
  gap: 20px;
}
.page-home .duo__cards{
  display: grid;
  gap: 12px;
}
.page-home .duo__card{
  padding: 20px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: var(--radius-md);
  transition: transform .18s var(--ease), border-color .18s var(--ease);
}
.page-home .duo__card--alt{
  background: var(--home-panel);
}
.page-home .duo__card:hover{
  transform: translateY(-4px);
  border-color: var(--cyan);
}
.page-home .duo__badge{
  margin: 0 0 10px;
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-900);
  background: var(--cyan);
  border-radius: 999px;
}
.page-home .duo__card--alt .duo__badge{
  background: var(--orange);
}
.page-home .duo__card h3{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-home .duo__card p{
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(244,247,249,.8);
}
.page-home .duo__card a{
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(61,242,210,.4);
  padding-block-end: 2px;
}
.page-home .duo__card a:hover{
  border-color: var(--cyan);
}
.page-home .duo__figure{
  margin: 0;
}
.page-home .duo__figure img{
  border-radius: var(--radius-md);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px){
  .page-home .search-panel__row{
    flex-direction: row;
    align-items: stretch;
  }
  .page-home .search-panel__row .btn{
    flex: 0 0 auto;
  }
  .page-home .paths__list{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-home .catalog__grid{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-home .adapt__tiers{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-home .feedback__stats{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-home .duo__cards{
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px){
  .page-home .hero{
    padding-block: 40px 64px;
  }
  .page-home .hero__grid{
    grid-template-columns: repeat(12, 1fr);
    column-gap: 24px;
    row-gap: 36px;
    align-items: start;
  }
  .page-home .hero__lead{
    grid-column: 1 / span 7;
  }
  .page-home .hero__notes{
    grid-column: 8 / span 5;
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-start;
    gap: 20px;
    padding-block-start: 6px;
  }
  .page-home .hero__vertical{
    writing-mode: vertical-rl;
    letter-spacing: .22em;
    font-size: 12px;
  }
  .page-home .hero__ring-col{
    grid-column: 1 / span 5;
  }
  .page-home .hero__search{
    grid-column: 6 / span 7;
  }
  .page-home .hero h1{
    font-size: 56px;
  }
  .page-home .hero__lede{
    font-size: 17px;
  }
  .page-home .ring-card{
    padding: 22px;
  }
  .page-home .ring-node{
    font-size: 13px;
    padding: 8px 14px;
  }
  .page-home .search-panel{
    padding: 28px;
  }
  .page-home .search-panel h2{
    font-size: 26px;
  }

  .page-home .section{
    padding-block: 88px;
  }
  .page-home .section__title{
    font-size: 38px;
  }
  .page-home .section__head{
    margin-block-end: 34px;
  }

  .page-home .paths__body{
    grid-template-columns: 7fr 5fr;
    gap: 24px;
    align-items: start;
  }
  .page-home .paths__figure{
    position: sticky;
    top: 24px;
  }

  .page-home .catalog__grid{
    grid-template-columns: repeat(3, 1fr);
  }
  .page-home .catalog__item:nth-child(3n+2){
    margin-block-start: 20px;
  }
  .page-home .catalog__item:nth-child(3n+3){
    margin-block-start: 8px;
  }

  .page-home .adapt__card{
    grid-template-columns: 1.35fr 1fr;
    align-items: center;
    gap: 32px;
    padding: 34px;
    border-radius: var(--radius-xl);
  }
  .page-home .adapt__text h2{
    font-size: 32px;
  }

  .page-home .feedback__panel{
    grid-template-columns: 1.1fr 1.4fr;
    align-items: start;
    gap: 24px 32px;
    padding: 32px;
  }
  .page-home .feedback__intro{
    grid-column: 1 / 2;
  }
  .page-home .feedback__stats{
    grid-column: 2 / 3;
    grid-template-columns: repeat(2, 1fr);
  }
  .page-home .feedback__actions{
    grid-column: 1 / -1;
  }

  .page-home .duo__body{
    grid-template-columns: 1.15fr .85fr;
    gap: 24px;
    align-items: center;
  }
}

@media (min-width: 1200px){
  .page-home .hero h1{
    font-size: 56px;
  }
  .page-home .feedback__stats{
    grid-template-columns: repeat(2, 1fr);
  }
  .page-home .duo__cards{
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (prefers-reduced-motion: reduce){
  .page-home .ring-node,
  .page-home .ring-arc,
  .page-home .paths__item,
  .page-home .catalog__item a,
  .page-home .duo__card,
  .page-home .search-field{
    transition: none;
  }
  .page-home .paths__item:hover,
  .page-home .catalog__item a:hover,
  .page-home .catalog__item a:focus-visible,
  .page-home .duo__card:hover{
    transform: none;
  }
}