.page-home {
  --home-rail-w: clamp(176px, 62vw, 232px);
  --home-gutter: clamp(18px, 4vw, 48px);
  background: var(--night);
  color: var(--fog);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.75;
  overflow-x: clip;
}

.page-home img {
  max-width: 100%;
}

.page-home .eyebrow {
  margin: 0;
  font-family: var(--font-annotation);
  font-size: var(--text-caption);
  letter-spacing: 0.18em;
  color: var(--amber);
  text-transform: none;
}

.page-home .sec-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-h2);
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-home .sec-lede {
  margin: 16px 0 0;
  max-width: 54ch;
  color: var(--steel);
  line-height: 1.85;
}

.page-home .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid var(--grid);
  border-radius: 0;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-home .btn--primary {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--night);
}

.page-home .btn--primary:hover,
.page-home .btn--primary:focus-visible {
  background: var(--lime-soft);
  border-color: var(--lime-soft);
}

.page-home .btn--ghost {
  background: transparent;
  color: var(--fog);
}

.page-home .btn--ghost:hover,
.page-home .btn--ghost:focus-visible {
  border-color: var(--lime);
  color: var(--lime);
}

.page-home .btn--compact {
  min-height: 40px;
  padding: 0 16px;
  font-size: 13px;
}

/* 封面 */
.page-home .cover {
  position: relative;
  padding: clamp(18px, 4vw, 34px) var(--home-gutter) clamp(40px, 7vw, 88px);
  border-bottom: var(--line);
  overflow: clip;
}

.page-home .cover__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-home .cover__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}

.page-home .cover__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 20, 38, 0.55) 0%, rgba(6, 20, 38, 0.9) 62%, var(--night) 100%),
    repeating-linear-gradient(90deg, rgba(29, 58, 77, 0.45) 0 1px, transparent 1px 96px);
}

.page-home .cover .breadcrumbs {
  position: relative;
  z-index: 1;
  max-width: var(--shell-max);
  margin: 0 auto clamp(20px, 5vw, 46px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--steel);
}

.page-home .cover .breadcrumbs__item {
  color: var(--steel);
  text-decoration: none;
}

.page-home .cover .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--grid);
}

.page-home .cover .breadcrumbs__item[aria-current="page"] {
  color: var(--lime);
}

.page-home .cover .breadcrumbs__item:hover {
  color: var(--fog);
}

.page-home .cover__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 6vw, 54px);
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-home .cover-title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 10.5vw, 92px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  color: var(--fog);
}

.page-home .cover-title .hl {
  color: var(--lime);
}

.page-home .cover__lead .lede {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 48ch;
  font-size: var(--text-body);
  line-height: 1.9;
  color: var(--steel);
}

.page-home .cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 32px);
}

.page-home .cover__index {
  list-style: none;
  margin: clamp(28px, 5vw, 42px) 0 0;
  padding: 0;
  border-top: var(--line);
}

.page-home .cover__index li {
  border-bottom: var(--line);
}

.page-home .cover__index a {
  display: grid;
  grid-template-columns: 30px 1fr auto;
  grid-template-areas:
    "idx label arrow"
    "idx hint arrow";
  align-items: center;
  gap: 2px 14px;
  padding: 14px 0;
  text-decoration: none;
  color: var(--fog);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .cover__index a:hover,
.page-home .cover__index a:focus-visible {
  color: var(--lime);
  transform: translateX(4px);
}

.page-home .cover__index .idx {
  grid-area: idx;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-home .cover__index .label {
  grid-area: label;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.page-home .cover__index .hint {
  grid-area: hint;
  font-size: 12px;
  color: var(--steel);
}

.page-home .cover__index .arrow {
  grid-area: arrow;
  font-family: var(--font-mono);
  color: var(--lime);
}

.page-home .cover__note {
  margin: 22px 0 0;
  font-family: var(--font-annotation);
  font-size: var(--text-caption);
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-home .cover__aside {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--grid);
  border-top: 2px solid var(--lime);
  background: linear-gradient(160deg, rgba(10, 30, 51, 0.94) 0%, rgba(11, 46, 51, 0.9) 100%);
}

.page-home .aside-note {
  margin: 0 0 12px;
  font-family: var(--font-annotation);
  font-size: var(--text-caption);
  letter-spacing: 0.16em;
  color: var(--steel);
}

.page-home .aside-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-bottom: 16px;
  border-bottom: var(--line);
}

.page-home .aside-version {
  font-family: var(--font-mono);
  font-size: clamp(44px, 12vw, 64px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  letter-spacing: 0.02em;
}

.page-home .tag {
  display: inline-block;
  padding: 4px 9px;
  border: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  line-height: 1.5;
}

.page-home .tag--amber {
  color: var(--amber);
  border-color: rgba(255, 181, 71, 0.5);
  background: var(--amber-soft);
}

.page-home .tag--lime {
  color: var(--lime);
  border-color: rgba(184, 255, 61, 0.42);
  background: var(--lime-wash);
}

.page-home .aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .aside-list li {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  align-items: baseline;
  gap: 10px;
  padding: 12px 0;
  border-bottom: var(--line);
}

.page-home .aside-list .code {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--fog);
  letter-spacing: 0.04em;
}

.page-home .aside-list .name {
  font-size: 13px;
  color: var(--steel);
}

.page-home .aside-list .state {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
  white-space: nowrap;
}

.page-home .aside-link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--lime);
  text-decoration: none;
}

.page-home .aside-link:hover {
  color: var(--lime-soft);
}

/* 数据跑道 */
.page-home .runway {
  padding: clamp(42px, 7vw, 86px) 0;
  background: var(--night);
  border-bottom: var(--line);
}

.page-home .runway__head {
  max-width: var(--shell-max);
  margin: 0 auto clamp(24px, 4vw, 38px);
  padding: 0 var(--home-gutter);
}

.page-home .rail {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 6px var(--home-gutter) 20px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--grid) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-home .rail::-webkit-scrollbar {
  height: 6px;
}

.page-home .rail::-webkit-scrollbar-thumb {
  background: var(--grid);
}

.page-home .rail__item {
  flex: 0 0 var(--home-rail-w);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 168px;
  padding: 18px 16px;
  border: 1px solid var(--grid);
  background: linear-gradient(180deg, rgba(10, 30, 51, 0.72) 0%, rgba(6, 20, 38, 0.92) 100%);
  text-decoration: none;
  color: var(--fog);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-home .rail__item:hover,
.page-home .rail__item:focus-visible {
  transform: scale(1.04);
  border-color: var(--lime);
  background: rgba(11, 46, 51, 0.92);
}

.page-home .rail__code {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-home .rail__name {
  font-size: 13px;
  line-height: 1.5;
  color: var(--fog);
}

.page-home .rail__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--steel);
}

.page-home .rail__hint {
  font-size: 11px;
  color: var(--lime-soft);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.page-home .rail__item:hover .rail__hint,
.page-home .rail__item:focus-visible .rail__hint {
  opacity: 1;
}

.page-home .rail__state {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-home .rail-media {
  max-width: var(--shell-max);
  margin: clamp(20px, 4vw, 34px) auto 0;
  padding: 0 var(--home-gutter);
}

.page-home .media-frame {
  margin: 0;
  border: 1px solid var(--grid);
  background: rgba(10, 30, 51, 0.55);
}

.page-home .media-frame__image {
  display: block;
  overflow: hidden;
}

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

.page-home .media-frame__caption {
  padding: 12px 14px;
  border-top: var(--line);
  font-size: var(--text-caption);
  line-height: 1.7;
  color: var(--steel);
}

/* V3 */
.page-home .v3 {
  padding: clamp(42px, 7vw, 92px) var(--home-gutter);
  border-bottom: var(--line);
}

.page-home .v3__inner {
  display: grid;
  gap: clamp(28px, 5vw, 50px);
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-home .v3__code {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: clamp(20px, 3vw, 28px) 0;
  font-family: var(--font-mono);
  font-size: clamp(38px, 11vw, 74px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
}

.page-home .v3__code .seg-ver {
  color: var(--amber);
}

.page-home .v3__code .seg-pro {
  color: var(--fog);
}

.page-home .v3__code .seg-league {
  color: var(--lime);
}

.page-home .v3__code .dash {
  color: var(--grid);
}

.page-home .v3__legend {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .v3__legend li {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 12px;
  padding: 12px 0;
  border-top: var(--line);
}

.page-home .v3__legend .key {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--lime);
}

.page-home .v3__legend .desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

.page-home .chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
}

.page-home .chip {
  padding: 5px 10px;
  border: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--fog);
  background: rgba(6, 20, 38, 0.4);
}

.page-home .v3__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 4vw, 34px);
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-home .v3__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 14px 16px;
  background: var(--teal);
}

.page-home .v3__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 6vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime);
}

.page-home .v3__stats .stat__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-home .v3__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 32px);
}

/* 更新专栏 */
.page-home .news {
  padding: clamp(42px, 7vw, 92px) var(--home-gutter);
  border-bottom: var(--line);
}

.page-home .news__inner {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-home .news__fig {
  margin-top: clamp(24px, 4vw, 34px);
}

.page-home .news__list {
  border-top: var(--line);
}

.page-home .news__item {
  border-bottom: var(--line);
}

.page-home .news__trigger {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  width: 100%;
  padding: 16px 0;
  border: 0;
  background: none;
  color: var(--fog);
  font-family: var(--font-body);
  text-align: left;
  cursor: pointer;
}

.page-home .news__trigger:hover .news__title,
.page-home .news__trigger:focus-visible .news__title {
  color: var(--lime);
}

.page-home .news__time {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-home .news__title {
  flex: 1 1 100%;
  order: 3;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--fog);
  transition: color var(--dur) var(--ease);
}

.page-home .news__trigger .sign {
  order: 4;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lime);
}

.page-home .news__trigger .sign::before {
  content: "+";
}

.page-home .news__trigger[aria-expanded="true"] .sign::before {
  content: "−";
}

.page-home .news__item .expand__content {
  padding: 0 0 18px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

.page-home .news__more {
  margin: 22px 0 0;
}

/* 路径 */
.page-home .path {
  padding: clamp(42px, 7vw, 92px) var(--home-gutter);
  background: var(--night);
  border-bottom: var(--line);
}

.page-home .path__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-home .steps {
  list-style: none;
  counter-reset: step;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-home .steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 6px 16px;
  padding: 20px 0;
  border-top: var(--line);
}

.page-home .steps li::before {
  content: "0" counter(step);
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--lime);
}

.page-home .step-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.4vw, 26px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--fog);
}

.page-home .steps p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

.page-home .path__support {
  margin-top: clamp(26px, 4vw, 38px);
  padding: 22px 20px;
  border: 1px solid var(--grid);
  border-left: 2px solid var(--amber);
  background: linear-gradient(120deg, rgba(74, 27, 42, 0.34) 0%, rgba(6, 20, 38, 0.4) 70%);
}

.page-home .support-line {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--steel);
}

.page-home .support-line + .support-line {
  margin-top: 12px;
}

.page-home .support-line strong {
  color: var(--fog);
  font-weight: 600;
}

/* 目录 */
.page-home .directory {
  padding: clamp(42px, 7vw, 88px) var(--home-gutter);
}

.page-home .directory__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-home .directory__grid {
  display: grid;
  gap: 0;
  margin-top: clamp(22px, 3.6vw, 34px);
  border-top: var(--line);
}

.page-home .directory__item {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 18px 0;
  border-bottom: var(--line);
  text-decoration: none;
  color: var(--fog);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-home .directory__item:hover,
.page-home .directory__item:focus-visible {
  color: var(--lime);
  transform: translateX(4px);
}

.page-home .directory__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-home .directory__text {
  display: block;
}

.page-home .directory__label {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(20px, 4vw, 28px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.page-home .directory__desc {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--steel);
}

.page-home .directory__arrow {
  font-family: var(--font-mono);
  color: var(--lime);
}

@media (min-width: 720px) {
  .page-home .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 26px;
  }

  .page-home .steps li {
    grid-template-columns: 40px 1fr;
  }

  .page-home .directory__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-home .v3__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-home .news__title {
    flex: 1 1 auto;
    order: 2;
  }

  .page-home .news__time {
    order: 3;
  }
}

@media (min-width: 960px) {
  .page-home .cover__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-home .cover__aside {
    padding: 26px 26px 24px 40px;
  }

  .page-home .aside-note {
    position: absolute;
    top: 24px;
    left: 14px;
    margin: 0;
    writing-mode: vertical-rl;
    letter-spacing: 0.24em;
  }

  .page-home .v3__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }

  .page-home .news__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-home .news__fig {
    margin-top: 34px;
  }

  .page-home .cover__index a {
    grid-template-columns: 34px minmax(0, 220px) 1fr auto;
    grid-template-areas: "idx label hint arrow";
    align-items: baseline;
  }

  .page-home .cover__index .hint {
    font-size: 12px;
    text-align: left;
  }
}

@media (min-width: 1200px) {
  .page-home .cover {
    padding-top: 40px;
  }

  .page-home .cover__aside {
    position: sticky;
    top: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail {
    scroll-snap-type: none;
  }

  .page-home .rail__item,
  .page-home .cover__index a,
  .page-home .directory__item {
    transition: none;
  }

  .page-home .rail__item:hover,
  .page-home .rail__item:focus-visible {
    transform: none;
  }
}