.page-home {
  --home-gap: clamp(1rem, 2.4vw, 1.9rem);
  --home-radius: 22px;
}

.page-home [id] {
  scroll-margin-top: 7rem;
}

/* ---------- 首屏 ---------- */
.page-home .home-hero {
  position: relative;
  padding: clamp(1.1rem, 3vw, 2rem) 0 clamp(1.4rem, 3vw, 2.4rem);
  overflow: hidden;
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(760px, 90vw);
  height: min(760px, 90vw);
  background: radial-gradient(circle, rgba(53, 230, 255, .14), transparent 62%);
  pointer-events: none;
}

.page-home .home-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 3vw, 2.6rem);
  align-items: start;
}

.page-home .home-crumbs {
  font-size: .78rem;
}

.page-home .home-kicker {
  margin: 1rem 0 .5rem;
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-home .home-hero__title {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--text);
}

.page-home .home-hero__accent {
  display: block;
  color: var(--cyan);
}

.page-home .home-hero__lead {
  margin: 1rem 0 0;
  max-width: 44ch;
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .home-cmd {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-home .home-cmd a {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .68rem .2rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: .95rem;
  transition: color .25s var(--ease), transform .3s var(--ease), border-color .25s;
}

.page-home .home-cmd a .mono {
  font-size: .74rem;
  color: var(--cyan);
  letter-spacing: .08em;
}

.page-home .home-cmd__arrow {
  margin-left: auto;
  color: var(--muted);
  font-family: var(--font-mono);
}

.page-home .home-cmd a:hover,
.page-home .home-cmd a:focus-visible {
  color: var(--cyan);
  border-color: rgba(53, 230, 255, .5);
  transform: translateX(4px);
}

.page-home .home-hero__status {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1.4rem;
}

.page-home .home-lamp {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .34rem .75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(13, 23, 40, .75);
  font-size: .78rem;
  color: var(--muted);
}

.page-home .home-visual {
  position: relative;
  aspect-ratio: 8 / 5;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 177, 61, .18), transparent 55%),
    linear-gradient(150deg, #0A1424 0%, #0D1728 55%, #08101C 100%);
}

.page-home .home-visual__img {
  position: absolute;
  inset: 0;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
}

.page-home .home-visual__svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.page-home .home-visual__label {
  position: absolute;
  top: .9rem;
  left: 1rem;
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-home .home-visual__stat {
  position: absolute;
  right: .9rem;
  bottom: .9rem;
  padding: .38rem .8rem;
  font-size: .74rem;
  color: var(--text);
  background: rgba(6, 11, 20, .82);
  border: 1px solid var(--line);
  border-radius: 999px;
}

@media (prefers-reduced-motion: no-preference) {
  .page-home .home-visual__pulse {
    animation: homePulse 5.5s ease-in-out infinite;
  }
}

@keyframes homePulse {
  0%, 100% { opacity: .3; }
  50% { opacity: .95; }
}

/* ---------- 主体栅格 ---------- */
.page-home .home-body {
  align-items: start;
  padding-bottom: clamp(2.4rem, 5vw, 4rem);
}

.page-home .home-rail {
  position: static;
  margin-bottom: 1rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--line);
}

.page-home .home-rail .rail-title {
  font-size: .72rem;
  letter-spacing: .18em;
  color: var(--muted);
  text-transform: uppercase;
  margin: 0 0 .5rem;
}

.page-home .home-rail .rail-list {
  display: flex;
  gap: .4rem;
  overflow-x: auto;
  list-style: none;
  margin: 0;
  padding: 0 0 .3rem;
  scrollbar-width: thin;
}

.page-home .home-rail .rail-link {
  display: inline-block;
  white-space: nowrap;
  padding: .34rem .7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: .78rem;
  color: var(--muted);
  text-decoration: none;
  transition: color .25s, border-color .25s, background .25s;
}

.page-home .home-rail .rail-link:hover,
.page-home .home-rail .rail-link:focus-visible,
.page-home .home-rail .rail-link.is-active,
.page-home .home-rail .rail-link[aria-current="true"] {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-home .home-flow {
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-home .home-sec {
  padding-top: clamp(1.8rem, 4vw, 3rem);
}

.page-home .home-sec + .home-sec {
  margin-top: clamp(1.4rem, 3vw, 2.2rem);
  border-top: 1px solid var(--line);
}

.page-home .home-sec--last {
  padding-bottom: 0;
}

.page-home .home-sec__head {
  max-width: 62ch;
}

.page-home .home-subhead {
  margin: 0 0 .8rem;
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--amber);
}

/* ---------- 入口索引 ---------- */
.page-home .home-entries {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(.7rem, 1.6vw, 1rem);
  margin-top: 1.5rem;
}

.page-home .home-entry {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  padding: clamp(1rem, 2vw, 1.5rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(53, 230, 255, .07), rgba(13, 23, 40, .92) 46%);
  color: var(--text);
  text-decoration: none;
  transition: transform .4s var(--ease), border-color .3s, box-shadow .3s;
}

.page-home .home-entry::after {
  content: "";
  position: absolute;
  top: 1.15rem;
  right: 1.15rem;
  width: 26px;
  height: 1px;
  background: var(--cyan);
  opacity: .55;
}

.page-home .home-entry:hover,
.page-home .home-entry:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(53, 230, 255, .5);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .38);
}

.page-home .home-entry__idx {
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-home .home-entry__title {
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.45;
}

.page-home .home-entry__text {
  font-size: .9rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .home-entry__go {
  margin-top: .2rem;
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-home .home-entry--e {
  background: linear-gradient(120deg, rgba(255, 177, 61, .12), rgba(13, 23, 40, .94) 55%);
}

/* ---------- 最近调整 ---------- */
.page-home .home-update-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  margin-top: 1.5rem;
}

.page-home .home-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .7rem;
}

.page-home .home-tl-item {
  position: relative;
  padding: .95rem 1rem .95rem 1.4rem;
  border-left: 2px solid var(--line);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(13, 23, 40, .62);
}

.page-home .home-tl-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 1.25rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--cyan);
}

.page-home .home-tl-item--amber::before {
  border-color: var(--amber);
}

.page-home .home-tl-meta {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-home .home-tl-title {
  margin: .3rem 0 .35rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
}

.page-home .home-tl-text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .home-tl-hint {
  margin: .5rem 0 0;
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-home .home-update-fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--panel-deep);
}

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

.page-home .home-update-fig figcaption {
  padding: .7rem .9rem;
  font-size: .72rem;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 四条路径 ---------- */
.page-home .home-paths {
  display: grid;
  grid-template-columns: 1fr;
  gap: .8rem;
  margin-top: 1.5rem;
}

.page-home .home-path {
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(13, 23, 40, .7);
}

.page-home .home-path:nth-child(2) {
  background: linear-gradient(160deg, rgba(255, 177, 61, .1), rgba(13, 23, 40, .88) 60%);
}

.page-home .home-path:nth-child(3) {
  background: linear-gradient(160deg, rgba(169, 150, 255, .12), rgba(13, 23, 40, .88) 60%);
}

.page-home .home-path:nth-child(4) {
  background: linear-gradient(160deg, rgba(86, 240, 184, .1), rgba(13, 23, 40, .88) 60%);
}

.page-home .home-path__idx {
  margin: 0;
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-home .home-path__title {
  margin: .32rem 0 .4rem;
  font-size: 1.06rem;
  font-weight: 700;
}

.page-home .home-path__text {
  margin: 0;
  font-size: .88rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-home .home-path__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin: .7rem 0 0;
}

.page-home .home-path-figure {
  margin: 1rem 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.page-home .home-dims {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: 1rem;
  padding-top: .9rem;
  border-top: 1px dashed var(--line);
}

.page-home .home-dims__item {
  padding: .28rem .65rem;
  font-size: .72rem;
  letter-spacing: .05em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.page-home .home-path-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  margin: 1.1rem 0 0;
}

.page-home .home-path-cta__note {
  flex: 1 1 15rem;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 专题与帮助 ---------- */
.page-home .home-connect {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  margin-top: 1.5rem;
}

.page-home .home-topics {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .1rem;
}

.page-home .home-topic a {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: .7rem;
  align-items: center;
  padding: .7rem .15rem;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  text-decoration: none;
  font-size: .92rem;
  transition: color .25s, border-color .25s;
}

.page-home .home-topic a:hover,
.page-home .home-topic a:focus-visible {
  color: var(--cyan);
  border-color: rgba(53, 230, 255, .45);
}

.page-home .home-topic__no {
  font-size: .72rem;
  color: var(--cyan);
  letter-spacing: .06em;
}

.page-home .home-topic__time {
  font-size: .7rem;
  color: var(--amber);
  white-space: nowrap;
}

.page-home .home-topics__foot,
.page-home .home-help__foot {
  margin: .9rem 0 0;
}

.page-home .home-help {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(53, 230, 255, .06), rgba(13, 23, 40, .82) 40%);
}

.page-home .home-qa {
  border-bottom: 1px solid var(--line);
  padding: .65rem 0;
}

.page-home .home-qa:last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-home .home-qa summary {
  display: flex;
  justify-content: space-between;
  gap: .8rem;
  cursor: pointer;
  list-style: none;
  font-size: .93rem;
  font-weight: 600;
  color: var(--text);
}

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

.page-home .home-qa summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--cyan);
}

.page-home .home-qa[open] summary::after {
  content: "–";
}

.page-home .home-qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-home .home-qa p {
  margin: .6rem 0 0;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .home-band {
  margin-top: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

/* ---------- 联系 ---------- */
.page-home .home-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--home-gap);
  padding: clamp(1.1rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--home-radius);
  background:
    radial-gradient(circle at 100% 0, rgba(255, 177, 61, .14), transparent 58%),
    var(--panel);
}

.page-home .home-contact__text {
  margin: .8rem 0 0;
  font-size: .95rem;
  line-height: 1.75;
  color: var(--muted);
}

.page-home .home-contact__note {
  margin: .5rem 0 0;
  font-size: .82rem;
  color: var(--amber);
}

.page-home .home-contact__btns {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 1.1rem 0 0;
}

.page-home .home-contact__list {
  display: grid;
  gap: .15rem;
  align-content: start;
}

.page-home .home-contact__hint {
  margin: .8rem 0 0;
  font-size: .72rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-home .home-paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .home-dims {
    gap: .5rem;
  }
}

@media (min-width: 920px) {
  .page-home .home-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: clamp(2rem, 3.4vw, 3.4rem);
  }

  .page-home .home-rail {
    position: sticky;
    top: 6.5rem;
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: 0;
  }

  .page-home .home-rail .rail-list {
    flex-direction: column;
    overflow: visible;
    gap: .25rem;
  }

  .page-home .home-rail .rail-link {
    display: block;
    border-radius: var(--radius-sm);
    border-color: transparent;
    padding: .45rem .7rem;
    border-left: 2px solid var(--line);
  }

  .page-home .home-rail .rail-link:hover,
  .page-home .home-rail .rail-link:focus-visible,
  .page-home .home-rail .rail-link.is-active,
  .page-home .home-rail .rail-link[aria-current="true"] {
    color: var(--cyan);
    background: rgba(53, 230, 255, .08);
    border-color: transparent;
    border-left-color: var(--cyan);
  }

  .page-home .home-entries {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }

  .page-home .home-entry--a { grid-column: span 7; }
  .page-home .home-entry--b { grid-column: span 5; }
  .page-home .home-entry--c { grid-column: span 5; }
  .page-home .home-entry--d { grid-column: span 7; }
  .page-home .home-entry--e { grid-column: span 12; }

  .page-home .home-update-grid {
    grid-template-columns: 1.2fr .8fr;
    align-items: start;
  }

  .page-home .home-connect {
    grid-template-columns: 1.05fr .95fr;
    align-items: start;
  }

  .page-home .home-contact {
    grid-template-columns: 1.05fr .95fr;
    align-items: start;
  }

  .page-home .home-hero__lead {
    font-size: 1.06rem;
  }
}

@media (min-width: 1180px) {
  .page-home .home-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .home-entry,
  .page-home .home-cmd a,
  .page-home .home-topic a,
  .page-home .home-rail .rail-link {
    transition: none;
  }

  .page-home .home-entry:hover,
  .page-home .home-entry:focus-visible,
  .page-home .home-cmd a:hover,
  .page-home .home-cmd a:focus-visible {
    transform: none;
  }
}