.page-home{
  --home-cut: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  --home-cut-sm: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

.page-home .home-sec{
  padding: clamp(44px, 7vw, 84px) 0;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero{
  position: relative;
  overflow: hidden;
  background: var(--jb-ink);
  padding: calc(var(--jb-header-h) + clamp(34px, 6vw, 72px)) 0 clamp(44px, 7vw, 88px);
}
.page-home .home-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(169, 240, 231, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(169, 240, 231, .07) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,.9), transparent 78%);
}
.page-home .home-hero__inner{
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 48px);
  align-items: center;
}
.page-home .home-hero__lead .jb-display{
  margin: 14px 0 18px;
  color: var(--jb-cream);
  font-size: clamp(32px, 7vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
}
.page-home .home-hero__lead .jb-lede{
  color: rgba(244, 237, 225, .8);
  max-width: 34em;
}
.page-home .home-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-home .home-hero__ghost{
  color: var(--jb-cream);
  border-color: rgba(244, 237, 225, .45);
}
.page-home .home-hero__note{
  margin: 18px 0 0;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--jb-cyan);
}

.page-home .home-hero__panel{
  position: relative;
  background: var(--jb-cream);
  clip-path: var(--home-cut);
}
.page-home .home-hero__panelBody{
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 4vw, 28px);
}
.page-home .home-hero__bgimg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .15;
  filter: saturate(.35);
  pointer-events: none;
}
.page-home .home-hero__cards{
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}

.page-home .home-path{
  position: relative;
  background: rgba(8, 26, 46, .95);
  color: var(--jb-cream);
  clip-path: var(--home-cut-sm);
  padding: 14px 14px 16px;
  transition: box-shadow .3s var(--jb-ease);
}
.page-home .home-path:hover{
  box-shadow: inset 0 0 0 1px var(--jb-orange);
}
.page-home .home-path--cyan:hover{
  box-shadow: inset 0 0 0 1px var(--jb-cyan);
}
.page-home .home-path__idx{
  display: inline-block;
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--jb-orange);
}
.page-home .home-path--cyan .home-path__idx{
  color: var(--jb-cyan);
}
.page-home .home-path__title{
  margin: 6px 0 10px;
  font-size: clamp(17px, 2.4vw, 20px);
  line-height: 1.35;
  color: var(--jb-cream);
}
.page-home .home-path__fig{
  margin: 0 0 10px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  clip-path: var(--home-cut-sm);
}
.page-home .home-path__fig img{
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.45) contrast(1.05);
}
.page-home .home-path__desc{
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(244, 237, 225, .74);
}
.page-home .home-path__tags{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.page-home .home-path__tags span{
  font-family: var(--jb-font-mono);
  font-size: 11px;
  padding: 3px 8px;
  border: 1px solid rgba(169, 240, 231, .28);
  color: var(--jb-cyan-light);
}
.page-home .home-path__fmt{
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.page-home .home-path__fmt-k{
  font-family: var(--jb-font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  padding: 6px 12px;
  background: rgba(47, 212, 198, .12);
  color: var(--jb-cyan);
}
.page-home .home-path__link{
  display: inline-block;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--jb-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 43, .5);
  padding-bottom: 2px;
}
.page-home .home-path--cyan .home-path__link{
  color: var(--jb-cyan);
  border-bottom-color: rgba(47, 212, 198, .5);
}

/* ---------- 4 月更新 ---------- */
.page-home .home-update__grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}
.page-home .home-update__lede{
  max-width: 46em;
  color: #29405A;
  line-height: 1.85;
}
.page-home .home-update__list{
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
}
.page-home .home-update__list li{
  padding: 14px 0 14px 16px;
  border-left: 2px solid rgba(255, 106, 43, .5);
  margin-bottom: 10px;
}
.page-home .home-update__list li:nth-child(2){ border-left-color: rgba(47, 212, 198, .65); }
.page-home .home-update__list li:nth-child(3){ border-left-color: var(--jb-slate); }
.page-home .home-update__k{
  display: block;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--jb-orange-deep);
  margin-bottom: 4px;
}
.page-home .home-update__list li:nth-child(2) .home-update__k{ color: #1a8a80; }
.page-home .home-update__list li:nth-child(3) .home-update__k{ color: var(--jb-slate); }
.page-home .home-update__list p{
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: #29405A;
}
.page-home .home-update__fig{
  margin: 0;
  clip-path: var(--home-cut);
  background: var(--jb-ink);
}
.page-home .home-update__fig img{
  display: block;
  width: 100%;
  height: auto;
  filter: saturate(.5);
}
.page-home .home-update__fig figcaption{
  padding: 12px 16px 14px;
  font-family: var(--jb-font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--jb-cyan-light);
  background: var(--jb-ink);
}

/* ---------- 阶梯索引 ---------- */
.page-home .home-ladder-sec{
  position: relative;
  overflow: hidden;
}
.page-home .home-ladder__bg{
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .17;
  filter: saturate(.3);
  pointer-events: none;
}
.page-home .home-ladder__inner{
  position: relative;
  z-index: 1;
}
.page-home .home-ladder__lede{
  max-width: 42em;
  color: rgba(244, 237, 225, .76);
  line-height: 1.8;
}
.page-home .home-ladder{
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}
.page-home .home-ladder__row{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 15px 12px;
  border-top: 1px solid rgba(169, 240, 231, .16);
  transition: background .25s var(--jb-ease);
}
.page-home .home-ladder__row:last-child{
  border-bottom: 1px solid rgba(169, 240, 231, .16);
}
.page-home .home-ladder__row:hover{
  background: rgba(47, 212, 198, .07);
}
.page-home .home-ladder__row:nth-child(2),
.page-home .home-ladder__row:nth-child(3),
.page-home .home-ladder__row:nth-child(5),
.page-home .home-ladder__row:nth-child(7){
  padding-left: 26px;
}
.page-home .home-ladder__num{
  font-family: var(--jb-font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--jb-cyan);
}
.page-home .home-ladder__name{
  margin: 0 0 3px;
  font-size: clamp(15px, 2vw, 18px);
  color: var(--jb-cream);
}
.page-home .home-ladder__use{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(244, 237, 225, .68);
}
.page-home .home-ladder__count{
  font-family: var(--jb-font-mono);
  font-size: 12px;
  color: var(--jb-orange);
  white-space: nowrap;
}
.page-home .home-ladder__foot{
  margin: 22px 0 0;
}
.page-home .home-ladder__foot a{
  font-family: var(--jb-font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--jb-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 212, 198, .45);
  padding-bottom: 3px;
}

/* ---------- 版本记录 ---------- */
.page-home .home-log__lede{
  max-width: 44em;
  color: #29405A;
  line-height: 1.8;
}
.page-home .home-log{
  position: relative;
  margin-top: 26px;
  padding-left: 26px;
}
.page-home .home-log::before{
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--jb-orange), var(--jb-cyan));
  opacity: .55;
}
.page-home .home-log__item{
  position: relative;
  padding-bottom: 18px;
}
.page-home .home-log__item::before{
  content: "";
  position: absolute;
  left: -24px;
  top: 9px;
  width: 10px;
  height: 10px;
  background: var(--jb-orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}
.page-home .home-log__item--cyan::before{
  background: var(--jb-cyan);
}
.page-home .home-log__sum{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  cursor: pointer;
  list-style: none;
  padding: 6px 0;
}
.page-home .home-log__sum::-webkit-details-marker{ display: none; }
.page-home .home-log__sum::after{
  content: "+";
  margin-left: auto;
  font-family: var(--jb-font-mono);
  font-size: 15px;
  color: var(--jb-orange-deep);
}
.page-home .home-log__item[open] .home-log__sum::after{ content: "–"; }
.page-home .home-log__ver{
  font-family: var(--jb-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--jb-orange-deep);
}
.page-home .home-log__item--cyan .home-log__ver{ color: #1a8a80; }
.page-home .home-log__title{
  font-weight: 700;
  font-size: 15.5px;
  color: var(--jb-ink);
}
.page-home .home-log__when{
  font-family: var(--jb-font-mono);
  font-size: 11.5px;
  color: var(--jb-slate);
}
.page-home .home-log__body{
  margin: 4px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #29405A;
  max-width: 44em;
}
.page-home .home-log__foot{
  margin: 18px 0 0 26px;
}
.page-home .home-log__foot a{
  font-family: var(--jb-font-mono);
  font-size: 13px;
  color: var(--jb-orange-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 71, 24, .4);
  padding-bottom: 3px;
}

/* ---------- 帮助快捷卡 ---------- */
.page-home .home-help__lede{
  max-width: 42em;
  color: rgba(244, 237, 225, .74);
  line-height: 1.8;
}
.page-home .home-help__grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 26px;
}
.page-home .home-help__card{
  position: relative;
  background: rgba(4, 16, 28, .55);
  border: 1px solid rgba(169, 240, 231, .16);
  clip-path: var(--home-cut);
  padding: clamp(18px, 3.4vw, 26px);
  transition: border-color .3s var(--jb-ease), background .3s var(--jb-ease);
}
.page-home .home-help__card:hover{
  border-color: rgba(255, 106, 43, .6);
  background: rgba(4, 16, 28, .78);
}
.page-home .home-help__tag{
  display: inline-block;
  font-family: var(--jb-font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  padding: 4px 9px;
  color: var(--jb-orange);
  background: rgba(255, 106, 43, .12);
  margin-bottom: 12px;
}
.page-home .home-help__tag--cyan{
  color: var(--jb-cyan);
  background: rgba(47, 212, 198, .12);
}
.page-home .home-help__card .jb-h3{
  color: var(--jb-cream);
  margin: 0 0 14px;
  font-size: clamp(17px, 2.6vw, 21px);
  line-height: 1.4;
}
.page-home .home-help__steps{
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}
.page-home .home-help__steps li{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 8px 0;
  border-top: 1px solid rgba(169, 240, 231, .12);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 237, 225, .82);
}
.page-home .home-help__n{
  font-family: var(--jb-font-mono);
  font-size: 12px;
  color: var(--jb-orange);
}
.page-home .home-help__card:nth-child(2) .home-help__n{ color: var(--jb-cyan); }
.page-home .home-help__result{
  margin: 0 0 16px;
  padding: 10px 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--jb-cyan-light);
  background: rgba(47, 212, 198, .08);
  border-left: 2px solid var(--jb-cyan);
}
.page-home .home-help__link{
  font-family: var(--jb-font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--jb-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 43, .5);
  padding-bottom: 3px;
}
.page-home .home-help__card:nth-child(2) .home-help__link{
  color: var(--jb-cyan);
  border-bottom-color: rgba(47, 212, 198, .5);
}

/* ---------- 收尾 ---------- */
.page-home .home-cta__inner{
  display: grid;
  gap: 22px;
  align-items: center;
}
.page-home .home-cta__copy p{
  margin: 10px 0 0;
  max-width: 40em;
  line-height: 1.85;
  color: #29405A;
}
.page-home .home-cta__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 680px){
  .page-home .home-help__grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-home .home-path{ padding: 18px 18px 20px; }
}

@media (min-width: 900px){
  .page-home .home-hero__inner{
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
  }
  .page-home .home-hero__panel{
    clip-path: polygon(9% 0, 100% 0, 100% 100%, 0 100%);
    background: linear-gradient(155deg, var(--jb-orange) 0%, var(--jb-cyan) 100%);
    padding-left: 3px;
  }
  .page-home .home-hero__panelBody{
    clip-path: polygon(9% 0, 100% 0, 100% 100%, 0 100%);
    background: var(--jb-cream);
    padding: 26px 26px 30px 34px;
  }
  .page-home .home-update__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 56px);
  }
  .page-home .home-ladder__row:nth-child(2),
  .page-home .home-ladder__row:nth-child(3),
  .page-home .home-ladder__row:nth-child(5),
  .page-home .home-ladder__row:nth-child(7){
    padding-left: 58px;
  }
  .page-home .home-cta__inner{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
  .page-home .home-cta__actions{ justify-content: flex-end; }
}

@media (min-width: 1080px){
  .page-home .home-hero__cards{
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }
  .page-home .home-ladder{
    max-width: 980px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-home .home-path,
  .page-home .home-help__card,
  .page-home .home-ladder__row{
    transition: none;
  }
}
<<<END>>>