.page-home {
  --ph-rail: 240px;
  --ph-edge: 26px;
  display: block;
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-home .hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(900px 460px at 84% -14%, rgba(0, 229, 255, .16), transparent 66%),
    radial-gradient(620px 420px at 2% 106%, rgba(255, 138, 43, .1), transparent 68%),
    linear-gradient(180deg, #07162b 0%, var(--ink) 100%);
}

.page-home .hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(22, 48, 79, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 48, 79, .55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, 0) 84%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), rgba(0, 0, 0, 0) 84%);
  pointer-events: none;
}

.page-home .hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  padding-block: clamp(34px, 7vw, 80px) clamp(40px, 7vw, 76px);
}

.page-home .hero__ctx {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-home .hero__title {
  margin: 0 0 18px;
  max-width: 22ch;
  font-size: clamp(28px, 5.1vw, 50px);
  line-height: 1.1;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-home .hero__lede {
  margin: 0 0 26px;
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--muted);
}

.page-home .hero__vblock {
  position: relative;
  margin: 0 0 26px;
  padding: 20px clamp(18px, 2.4vw, 26px) 22px;
  background: linear-gradient(135deg, rgba(11, 27, 51, .96), rgba(11, 27, 51, .5));
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ph-edge)), calc(100% - var(--ph-edge)) 100%, 0 100%);
}

.page-home .hero__vlabel {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-home .hero__vernum {
  margin: 0;
  font-size: clamp(54px, 12vw, 118px);
  line-height: .98;
  letter-spacing: -.045em;
  color: var(--cyan);
  text-shadow: 0 0 46px rgba(0, 229, 255, .35);
}

.page-home .hero__vernum::after {
  content: "";
  display: block;
  width: clamp(70px, 16vw, 150px);
  height: 6px;
  margin-top: 14px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 255, 0));
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}

.page-home .hero__vrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 16px;
}

.page-home .hero__vnote {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-home .hero__idx {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

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

.page-home .hero__idxlink {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 3px 14px;
  padding: 14px 12px 14px 0;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: inherit;
  transition: border-color .22s ease, background-color .22s ease, padding-left .22s ease;
}

.page-home .hero__idxlink:hover,
.page-home .hero__idxlink:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(0, 229, 255, .07);
  padding-left: 12px;
}

.page-home .hero__idxnum {
  font-size: 13px;
  color: var(--cyan);
}

.page-home .hero__idxname {
  font-size: 16.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-home .hero__idxdesc {
  grid-column: 2;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-home .hero__fig {
  margin: 0;
}

.page-home .hero__fig .fig__frame {
  border: 1px solid var(--line);
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

/* ---------- 主体分栏 ---------- */
.page-home .layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 42px);
  padding-block: clamp(38px, 6vw, 72px);
}

.page-home .layout__rail {
  position: relative;
}

.page-home .verrail {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}

.page-home .verrail__title {
  margin: 0 0 14px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--muted);
}

.page-home .verrail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
}

.page-home .verrail__link {
  display: block;
  padding: 9px 12px;
  font-family: var(--f-mono);
  font-size: 15px;
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  background: rgba(22, 48, 79, .5);
  border-left: 2px solid transparent;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.page-home .verrail__link:hover {
  border-left-color: var(--cyan);
  background: rgba(0, 229, 255, .12);
}

.page-home .verrail__link[aria-current="true"] {
  border-left-color: var(--cyan);
  background: rgba(0, 229, 255, .17);
  color: var(--cyan);
}

.page-home .verrail__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 章节通用 ---------- */
.page-home .section {
  margin: 0 0 clamp(42px, 6vw, 74px);
}

.page-home .section:last-child {
  margin-bottom: 0;
}

.page-home .section__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line);
}

.page-home .section__idx {
  font-size: 13px;
  color: var(--cyan);
}

.page-home .section__title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 33px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 800;
}

.page-home .section__note {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
}

/* ---------- 横向主题带 ---------- */
.page-home .bands {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .band {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--panel);
  transition: background-color .22s ease;
}

.page-home .band::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}

.page-home .band:hover {
  background: var(--panel-2);
}

.page-home .band:hover::after {
  transform: scaleX(1);
}

.page-home .band__num {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-home .band__title {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 21px);
  line-height: 1.3;
  font-weight: 700;
}

.page-home .band__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .band__meta {
  display: grid;
  gap: 8px;
  margin: 0;
}

.page-home .band__meta p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--paper);
}

.page-home .band__mk {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ink-on-accent);
  background: var(--cyan);
}

.page-home .band__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .4);
  transition: color .2s ease, border-color .2s ease;
}

.page-home .band__link:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 版本号段落 ---------- */
.page-home .vers {
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
  display: grid;
  gap: 1px;
}

.page-home .vers__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--panel);
  transition: background-color .22s ease;
}

.page-home .vers__item:hover {
  background: var(--panel-2);
}

.page-home .vers__tag {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-home .vers__num {
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-home .vers__lead {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 700;
  color: var(--paper);
}

.page-home .vers__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home .vers__fig {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

/* ---------- 双版本并排 ---------- */
.page-home .duo {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .duo__col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--panel);
}

.page-home .duo__col--sub {
  border-left: 3px solid var(--orange);
}

.page-home .duo__col--dl {
  border-left: 3px solid var(--line);
}

.page-home .duo__name {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-home .duo__col--sub .duo__name {
  color: var(--orange);
}

.page-home .duo__headline {
  margin: 0;
  font-size: clamp(19px, 2.5vw, 25px);
  line-height: 1.25;
  font-weight: 700;
}

.page-home .duo__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-home .duo__list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-home .duo__k {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-home .duo__v {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper);
}

.page-home .duo__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .4);
}

.page-home .duo__col--sub .duo__link {
  color: var(--orange);
  border-bottom-color: rgba(255, 138, 43, .45);
}

.page-home .duo__fig {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

/* ---------- 移动端路径 ---------- */
.page-home .mobile {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 38px);
}

.page-home .mobile__fig {
  margin: 0;
  max-width: 340px;
}

.page-home .mobile__fig .fig__frame {
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  background: var(--panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-home .steps {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .steps__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--panel);
}

.page-home .steps__n {
  font-size: 13px;
  color: var(--cyan);
}

.page-home .steps__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--paper);
}

.page-home .mobile__note {
  margin: 0;
  padding: 14px 18px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--muted);
  background: rgba(11, 27, 51, .72);
  border-left: 2px solid var(--amber);
}

/* ---------- 联络条 ---------- */
.page-home .cbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-home .cbar__item {
  padding: 20px 22px;
  background: var(--panel);
}

.page-home .cbar__k {
  margin: 0 0 6px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-home .cbar__v {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.page-home .cbar__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .cbar__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 图片基础 ---------- */
.page-home .fig__frame {
  border: 1px solid var(--line);
  background: var(--panel);
}

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

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-home .cbar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .vers__item {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 36px);
    align-items: start;
  }

  .page-home .vers__tag {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (min-width: 860px) {
  .page-home .bands {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-home .mobile {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(26px, 4vw, 46px);
  }
}

@media (min-width: 960px) {
  .page-home .hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: center;
    gap: clamp(34px, 5vw, 64px);
  }
}

@media (min-width: 1024px) {
  .page-home .layout {
    grid-template-columns: var(--ph-rail) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4vw, 58px);
  }

  .page-home .layout__rail {
    position: sticky;
    top: 104px;
  }

  .page-home .verrail__list {
    display: grid;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-home .section__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 8px 18px;
  }

  .page-home .section__note {
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .band::after,
  .page-home .hero__idxlink,
  .page-home .verrail__link,
  .page-home .band,
  .page-home .vers__item {
    transition: none;
  }

  .page-home .band::after {
    transform: scaleX(1);
    background: var(--line);
  }
}