.page-home {
  --home-gap: clamp(1rem, 2.4vw, 1.75rem);
  --home-wide: clamp(2.5rem, 7vw, 5.5rem);
  display: block;
  background: var(--ink);
  color: var(--bone);
}

/* ===================== 封面首屏 ===================== */
.page-home .cover {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: flex;
  align-items: flex-end;
  min-height: clamp(540px, 82vh, 800px);
  padding: clamp(3.25rem, 8vw, 5.5rem) 0 clamp(2.25rem, 5vw, 3.5rem);
  background: var(--ink);
}

.page-home .cover__visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.36;
}

.page-home .cover__scrim {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(102deg, rgba(11, 18, 51, 0.97) 0%, rgba(11, 18, 51, 0.86) 38%, rgba(11, 18, 51, 0.44) 68%, rgba(11, 18, 51, 0.78) 100%),
    linear-gradient(0deg, rgba(11, 18, 51, 0.96) 0%, rgba(11, 18, 51, 0) 46%);
}

.page-home .cover__inner {
  position: relative;
  z-index: 2;
  width: 100%;
}

.page-home .cover__eyebrow {
  color: var(--cyan);
  margin: 0 0 clamp(1rem, 2.6vw, 1.75rem);
}

.page-home .cover__title {
  margin: 0 0 clamp(1rem, 2.4vw, 1.6rem);
  max-width: 15em;
  font-size: clamp(2.05rem, 6.2vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--bone);
}

.page-home .cover__title em {
  font-style: normal;
  color: var(--cyan);
}

.page-home .cover__lede {
  max-width: 40em;
  margin: 0;
  font-size: clamp(0.95rem, 2.1vw, 1.075rem);
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.82);
}

.page-home .cover__paths {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.6rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

.page-home .cover__path a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(22, 34, 79, 0.62);
  text-decoration: none;
  color: var(--bone);
  transition:
    border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-home .cover__path a:hover,
.page-home .cover__path a:focus-visible {
  border-color: var(--cyan);
  background: rgba(22, 34, 79, 0.9);
  box-shadow: 0 0 0 1px rgba(34, 224, 214, 0.3), var(--shadow);
  transform: translateY(-2px);
}

.page-home .cover__k {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--violet);
  padding-top: 0.15rem;
}

.page-home .cover__v {
  display: block;
  min-width: 0;
}

.page-home .cover__v strong {
  display: block;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--bone);
  margin-bottom: 0.25rem;
}

.page-home .cover__v span {
  display: block;
  font-size: 0.82rem;
  line-height: 1.65;
  color: rgba(244, 241, 234, 0.66);
}

.page-home .cover__arrow {
  color: var(--cyan);
  font-size: 1rem;
  transition: transform var(--dur) var(--ease);
}

.page-home .cover__path a:hover .cover__arrow {
  transform: translateX(4px);
}

.page-home .cover__scroll {
  margin: clamp(1.5rem, 4vw, 2.4rem) 0 0;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--stone);
}

/* ===================== 上下文条 ===================== */
.page-home .ctx {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-home .ctx__in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.25rem;
  padding-top: 0.7rem;
  padding-bottom: 0.7rem;
}

.page-home .ctx__crumb,
.page-home .ctx__status {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--stone);
}

.page-home .ctx__crumb .mono {
  color: var(--violet);
  margin-right: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
}

.page-home .ctx__status {
  display: inline-flex;
  align-items: center;
  color: var(--cyan);
}

/* ===================== 区块通用 ===================== */
.page-home .sect-head {
  max-width: 46rem;
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
}

.page-home .sect-head .eyebrow {
  color: var(--cyan);
  margin: 0 0 0.75rem;
}

.page-home .sect-head .display-2 {
  margin: 0 0 0.9rem;
  font-size: clamp(1.55rem, 4.1vw, 2.55rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--bone);
}

.page-home .sect-head .lede {
  margin: 0;
  font-size: clamp(0.94rem, 2vw, 1.05rem);
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.76);
}

.page-home .sect-head--dark .display-2 {
  color: var(--text-dark);
}

.page-home .sect-head--dark .eyebrow {
  color: var(--violet-deep);
}

.page-home .sect-head--dark .lede {
  color: rgba(18, 23, 42, 0.78);
}

/* ===================== 更新记录 ===================== */
.page-home .updates {
  padding-top: var(--home-wide);
  padding-bottom: var(--home-wide);
}

.page-home .updates__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  grid-template-columns: 1fr;
}

.page-home .updates__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.page-home .updates__figure .media {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-home .updates__cap,
.page-home .fix__cap {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--stone);
}

.page-home .updates__side {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  min-width: 0;
}

.page-home .updates__idx {
  display: inline-block;
  min-width: 2.2rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--violet);
}

.page-home .updates__label {
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.5;
}

.page-home .updates__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-home .updates__more {
  align-self: flex-start;
}

/* ===================== 三步排查 ===================== */
.page-home .fix {
  position: relative;
  padding-top: var(--home-wide);
  padding-bottom: var(--home-wide);
  background:
    radial-gradient(90% 60% at 100% 0%, rgba(108, 60, 233, 0.34), transparent 62%),
    var(--ink);
}

.page-home .fix__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  grid-template-columns: 1fr;
}

.page-home .fix__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
  counter-reset: none;
}

.page-home .fix__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
  border-radius: var(--r-md);
  background: rgba(22, 34, 79, 0.55);
  transition: border-left-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-home .fix__step:hover {
  border-left-color: var(--cyan);
  background: rgba(22, 34, 79, 0.82);
}

.page-home .fix__num {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 0.2rem;
}

.page-home .fix__title {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--bone);
}

.page-home .fix__body p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.74);
}

.page-home .fix__figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  min-width: 0;
}

.page-home .fix__figure .media {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-home .fix__cta {
  align-self: flex-start;
}

/* ===================== 订阅与案例 ===================== */
.page-home .subs {
  padding-top: var(--home-wide);
  padding-bottom: var(--home-wide);
  background:
    radial-gradient(80% 70% at 0% 100%, rgba(34, 224, 214, 0.14), transparent 60%),
    var(--violet-deep);
}

.page-home .subs__grid {
  display: grid;
  gap: var(--home-gap);
  grid-template-columns: 1fr;
}

.page-home .subs__card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: clamp(1.25rem, 3vw, 1.9rem);
  border-radius: var(--r-lg);
  border: 1px solid rgba(244, 241, 234, 0.18);
  background: rgba(22, 34, 79, 0.68);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home .subs__card:hover {
  border-color: var(--cyan);
  box-shadow: var(--shadow);
}

.page-home .subs__card--case {
  background: var(--bone);
  border-color: rgba(18, 23, 42, 0.12);
  color: var(--text-dark);
}

.page-home .subs__card--case:hover {
  border-color: var(--violet);
}

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

.page-home .subs__figure .media {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
}

.page-home .subs__title {
  margin: 0;
  font-size: clamp(1.1rem, 2.6vw, 1.35rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--bone);
}

.page-home .subs__card--case .subs__title {
  color: var(--text-dark);
}

.page-home .subs__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.78);
}

.page-home .subs__card--case .subs__text {
  color: rgba(18, 23, 42, 0.8);
}

.page-home .subs__text--tight {
  font-size: 0.84rem;
}

.page-home .subs__list {
  list-style: none;
  margin: 0.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-home .subs__list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.8);
}

.page-home .subs__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-home .subs__card .btn {
  margin-top: auto;
}

.page-home .subs__facets {
  margin: 0.25rem 0 0;
  display: grid;
  gap: 0.7rem;
}

.page-home .subs__facet {
  padding-left: 0.85rem;
  border-left: 3px solid var(--violet);
}

.page-home .subs__facet dt {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--violet-deep);
  margin-bottom: 0.15rem;
}

.page-home .subs__facet dd {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.7;
  color: rgba(18, 23, 42, 0.74);
}

/* ===================== 频道索引地图 ===================== */
.page-home .chan-band {
  padding-top: var(--home-wide);
  padding-bottom: var(--home-wide);
}

.page-home .chan {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(18, 23, 42, 0.14);
}

.page-home .chan__item {
  border-bottom: 1px solid rgba(18, 23, 42, 0.14);
}

.page-home .chan__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "num name go"
    "num desc go";
  align-items: center;
  gap: 0.15rem 0.9rem;
  padding: 0.95rem 0.35rem;
  text-decoration: none;
  color: var(--text-dark);
  transition: background-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-home .chan__link:hover,
.page-home .chan__link:focus-visible {
  background: rgba(108, 60, 233, 0.09);
  padding-left: 0.75rem;
}

.page-home .chan__num {
  grid-area: num;
  align-self: center;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-home .chan__name {
  grid-area: name;
  font-size: clamp(1rem, 2.4vw, 1.18rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-dark);
}

.page-home .chan__desc {
  grid-area: desc;
  font-size: 0.83rem;
  line-height: 1.65;
  color: rgba(18, 23, 42, 0.68);
}

.page-home .chan__go {
  grid-area: go;
  align-self: center;
  font-size: 1rem;
  color: var(--violet);
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-home .chan__link:hover .chan__go {
  transform: translateX(4px);
  color: var(--violet-deep);
}

.page-home .chan__foot {
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
  padding: clamp(1.15rem, 3vw, 1.7rem);
  border-radius: var(--r-lg);
  background: rgba(11, 18, 51, 0.05);
  border: 1px dashed rgba(18, 23, 42, 0.2);
}

.page-home .chan__foot-text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.85;
  color: rgba(18, 23, 42, 0.82);
}

.page-home .chan__foot-text .link {
  color: var(--violet-deep);
  font-weight: 700;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-home .chan__foot-text .link:hover {
  color: var(--clay);
}

/* ===================== 响应式 ===================== */
@media (min-width: 680px) {
  .page-home .cover__paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .ctx__in {
    flex-wrap: nowrap;
  }

  .page-home .chan__foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-home .chan__foot-text {
    max-width: 42rem;
  }
}

@media (min-width: 960px) {
  .page-home .cover {
    align-items: center;
  }

  .page-home .cover__paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-home .cover__path a {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    align-items: start;
    min-height: 11.5rem;
    padding: 1.15rem 1.15rem 1.05rem;
  }

  .page-home .cover__arrow {
    justify-self: end;
  }

  .page-home .updates__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-home .fix__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-home .subs__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-home .chan {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.5rem, 4vw, 3rem);
  }

  .page-home .chan__item:nth-child(1),
  .page-home .chan__item:nth-child(2) {
    border-top: none;
  }
}

@media (min-width: 1280px) {
  .page-home .cover__title {
    max-width: 16em;
  }

  .page-home .cover__path a {
    min-height: 12.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .cover__path a,
  .page-home .cover__arrow,
  .page-home .chan__link,
  .page-home .chan__go,
  .page-home .fix__step,
  .page-home .subs__card {
    transition: none;
  }

  .page-home .cover__path a:hover,
  .page-home .chan__link:hover .chan__go {
    transform: none;
  }
}