.page-home {
  --home-gap: clamp(14px, 1.8vw, 20px);
  --home-pad: clamp(18px, 2.4vw, 28px);
  --home-block-pad: clamp(34px, 5vw, 62px);
  --glow-brand: rgba(240, 90, 60, .16);
  --glow-mint: rgba(53, 196, 160, .14);
  position: relative;
  background: var(--ink-900);
  color: var(--white);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-home .shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- 首屏拼贴 ---------- */
.page-home .home-hero {
  position: relative;
  padding-block: clamp(20px, 3.6vw, 40px) clamp(28px, 4.6vw, 54px);
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: -12% -8% auto -8%;
  height: 460px;
  background:
    radial-gradient(58% 100% at 18% 0%, var(--glow-brand), transparent 70%),
    radial-gradient(52% 100% at 88% 12%, var(--glow-mint), transparent 72%);
  pointer-events: none;
}

.page-home .home-hero .shell {
  position: relative;
  z-index: 1;
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
  margin-top: clamp(14px, 2.4vw, 22px);
}

.page-home .hero-main h1 {
  margin: 14px 0 16px;
  font-size: clamp(32px, 6.2vw, 58px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -.02em;
}

.page-home .hero-main .hl {
  color: var(--brand);
  position: relative;
}

.page-home .hero-main .hl::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -.08em;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--brand), var(--brand-deep));
}

.page-home .hero-main .lede {
  max-width: 62ch;
  color: var(--mist);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-home .hero-edition {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--mist);
}

.page-home .hero-edition .mono {
  letter-spacing: .04em;
  color: var(--white);
}

.page-home .hero-rail {
  display: grid;
  gap: 16px;
  padding: var(--home-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(158deg, var(--ink-800), var(--ink-900) 84%);
  box-shadow: var(--shadow);
}

.page-home .media-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .82);
}

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

.page-home .media-frame__caption {
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

.page-home .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .rail-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--line-strong);
  background: rgba(94, 116, 138, .12);
  transition: transform .2s ease, background .2s ease;
}

.page-home .rail-list li:nth-child(3) {
  border-left-color: var(--mint);
  background: rgba(53, 196, 160, .1);
}

.page-home .rail-list li:last-child {
  border-left-color: var(--brand);
  background: rgba(240, 90, 60, .12);
}

.page-home .rail-list li:hover {
  transform: translateY(-2px);
  background: rgba(94, 116, 138, .2);
}

.page-home .rail-list a {
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
}

.page-home .rail-num {
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .06em;
}

.page-home .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--home-gap);
}

.page-home .stat {
  padding: 16px 16px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .62);
}

.page-home .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
}

.page-home .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 双栏骨架 ---------- */
.page-home .layout-rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
  align-items: start;
}

.page-home .rail-main {
  min-width: 0;
}

.page-home .home-block {
  padding-block: var(--home-block-pad);
  border-top: 1px solid var(--line-soft);
}

.page-home .home-block--tight {
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-home .section-head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-home .section-head h2 {
  margin: 8px 0 10px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-home .section-head .muted {
  max-width: 66ch;
  line-height: 1.75;
}

/* ---------- 双核心入口 ---------- */
.page-home .core-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .core-card {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: var(--home-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(23, 53, 83, .86), rgba(11, 27, 43, .92));
}

.page-home .core-card--mint {
  border-color: rgba(53, 196, 160, .38);
  background: linear-gradient(150deg, rgba(53, 196, 160, .12), rgba(11, 27, 43, .94));
}

.page-home .core-card h3 {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--white);
}

.page-home .core-card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-home .core-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-home .core-card__list li {
  position: relative;
  padding-left: 17px;
}

.page-home .core-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 2px;
  background: var(--brand);
}

.page-home .core-card--mint .core-card__list li::before {
  background: var(--mint);
}

.page-home .card-link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
  padding-bottom: 3px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid var(--brand);
}

.page-home .card-link:hover {
  color: var(--brand);
}

.page-home .version-figure {
  margin-top: var(--home-gap);
}

/* ---------- 公告时间轴 ---------- */
.page-home .filter-bar {
  margin: 4px 0 6px;
}

.page-home .timeline-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.page-home .bulletin-item {
  position: relative;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(120deg, rgba(18, 42, 64, .92), rgba(11, 27, 43, .94));
  overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}

.page-home .bulletin-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 3px;
  background: var(--line-strong);
  z-index: 1;
}

.page-home .bulletin-item[data-tags~="version"]::before {
  background: linear-gradient(var(--mint), var(--mint-soft));
}

.page-home .bulletin-item[data-tags~="rule"]::before {
  background: var(--brand);
}

.page-home .bulletin-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-home .bulletin-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 14px 16px 14px 20px;
}

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

.page-home .bulletin-time {
  font-size: 12.5px;
  color: var(--mist);
  letter-spacing: .03em;
}

.page-home .bulletin-title {
  flex: 1 1 100%;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-home .bulletin-toggle {
  position: relative;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  margin-left: auto;
  align-self: center;
}

.page-home .bulletin-toggle::before,
.page-home .bulletin-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--brand);
}

.page-home .bulletin-toggle::before {
  width: 9px;
  height: 2px;
}

.page-home .bulletin-toggle::after {
  width: 2px;
  height: 9px;
  transition: opacity .18s ease;
}

.page-home .bulletin-item[open] .bulletin-toggle::after {
  opacity: 0;
}

.page-home .bulletin-body {
  padding: 0 16px 16px 20px;
  border-top: 1px dashed var(--line-soft);
  margin-top: 2px;
  padding-top: 12px;
}

.page-home .bulletin-body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-home .bulletin-ref {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--mist);
  margin-bottom: 0;
}

.page-home .bulletin-figure {
  margin-top: var(--home-gap);
}

/* ---------- 换设备路径 ---------- */
.page-home .records-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
  align-items: start;
}

.page-home .path-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: none;
}

.page-home .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 16px 16px 18px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .72);
}

.page-home .step:first-child {
  border-left-color: var(--brand);
  background: rgba(240, 90, 60, .1);
}

.page-home .step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  padding-top: 2px;
}

.page-home .step h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

.page-home .step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-home .records-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

/* ---------- 延伸阅读 ---------- */
.page-home .next-title {
  margin: 0 0 16px;
  font-size: clamp(22px, 2.8vw, 28px);
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-home .next-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-home .next-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .62);
  color: var(--white);
  text-decoration: none;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.page-home .next-link strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
}

.page-home .next-link small {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--mist);
}

.page-home .next-link > span:last-child {
  color: var(--brand);
  flex: 0 0 auto;
}

.page-home .next-link:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
  background: rgba(240, 90, 60, .1);
}

/* ---------- 右侧索引栏 ---------- */
.page-home .index-rail {
  display: grid;
  gap: 6px;
  padding: var(--home-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(23, 53, 83, .7), rgba(11, 27, 43, .9));
}

.page-home .index-rail__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-home .index-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  color: var(--mist);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.45;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}

.page-home .index-rail__link:hover,
.page-home .index-rail__link.is-active {
  color: var(--white);
  background: rgba(94, 116, 138, .18);
  border-left-color: var(--brand);
}

.page-home .index-rail__num {
  font-size: 12px;
  color: var(--brand);
  flex: 0 0 auto;
}

.page-home .index-rail__cta {
  margin-top: 10px;
  justify-self: stretch;
  text-align: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-home .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-home .bulletin-title {
    flex: 1 1 auto;
    min-width: 0;
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: calc(var(--home-gap) + 4px);
  }

  .page-home .hero-main {
    grid-column: 1 / 8;
  }

  .page-home .hero-rail {
    grid-column: 8 / 13;
    grid-row: 1 / 3;
  }

  .page-home .hero-stats {
    grid-column: 1 / 8;
  }

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

  .page-home .records-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

@media (min-width: 980px) {
  .page-home .layout-rail {
    grid-template-columns: minmax(0, 1fr) 258px;
  }

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

@media (min-width: 1120px) {
  .page-home .hero-main h1 {
    max-width: 15ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-list li,
  .page-home .bulletin-item,
  .page-home .next-link,
  .page-home .bulletin-toggle::after {
    transition: none;
  }

  .page-home .rail-list li:hover,
  .page-home .bulletin-item:hover,
  .page-home .next-link:hover {
    transform: none;
  }
}

.page-home {
  --home-gap: clamp(14px, 1.8vw, 20px);
  --home-pad: clamp(18px, 2.4vw, 28px);
  --home-block-pad: clamp(34px, 5vw, 62px);
  --glow-brand: rgba(240, 90, 60, .16);
  --glow-mint: rgba(53, 196, 160, .14);
  position: relative;
  background: var(--ink-900);
  color: var(--white);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-home .shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-home .home-hero {
  position: relative;
  padding-block: clamp(20px, 3.6vw, 40px) clamp(28px, 4.6vw, 54px);
}

.page-home .home-hero::before {
  content: "";
  position: absolute;
  inset: -12% -8% auto -8%;
  height: 460px;
  background:
    radial-gradient(58% 100% at 18% 0%, var(--glow-brand), transparent 70%),
    radial-gradient(52% 100% at 88% 12%, var(--glow-mint), transparent 72%);
  pointer-events: none;
}

.page-home .home-hero .shell {
  position: relative;
  z-index: 1;
}

.page-home .hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
  margin-top: clamp(14px, 2.4vw, 22px);
}

.page-home .hero-main h1 {
  margin: 14px 0 16px;
  font-size: clamp(32px, 6.2vw, 58px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -.02em;
}

.page-home .hero-main .hl {
  color: var(--brand);
  position: relative;
}

.page-home .hero-main .hl::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -.08em;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--brand), var(--brand-deep));
}

.page-home .hero-main .lede {
  max-width: 62ch;
  color: var(--mist);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 28px);
}

.page-home .hero-edition {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  color: var(--mist);
}

.page-home .hero-edition .mono {
  letter-spacing: .04em;
  color: var(--white);
}

.page-home .hero-rail {
  display: grid;
  gap: 16px;
  padding: var(--home-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(158deg, var(--ink-800), var(--ink-900) 84%);
  box-shadow: var(--shadow);
}

.page-home .media-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .82);
}

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

.page-home .media-frame__caption {
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

.page-home .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-home .rail-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--line-strong);
  background: rgba(94, 116, 138, .12);
  transition: transform .2s ease, background .2s ease;
}

.page-home .rail-list li:nth-child(3) {
  border-left-color: var(--mint);
  background: rgba(53, 196, 160, .1);
}

.page-home .rail-list li:last-child {
  border-left-color: var(--brand);
  background: rgba(240, 90, 60, .12);
}

.page-home .rail-list li:hover {
  transform: translateY(-2px);
  background: rgba(94, 116, 138, .2);
}

.page-home .rail-list a {
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.5;
}

.page-home .rail-num {
  font-size: 12px;
  color: var(--mist);
  letter-spacing: .06em;
}

.page-home .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--home-gap);
}

.page-home .stat {
  padding: 16px 16px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .62);
}

.page-home .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
}

.page-home .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: var(--mist);
}

.page-home .layout-rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
  align-items: start;
}

.page-home .rail-main {
  min-width: 0;
}

.page-home .home-block {
  padding-block: var(--home-block-pad);
  border-top: 1px solid var(--line-soft);
}

.page-home .home-block--tight {
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-home .section-head {
  margin-bottom: clamp(18px, 2.6vw, 28px);
}

.page-home .section-head h2 {
  margin: 8px 0 10px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.22;
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-home .section-head .muted {
  max-width: 66ch;
  line-height: 1.75;
}

.page-home .core-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--home-gap);
}

.page-home .core-card {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: var(--home-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(23, 53, 83, .86), rgba(11, 27, 43, .92));
}

.page-home .core-card--mint {
  border-color: rgba(53, 196, 160, .38);
  background: linear-gradient(150deg, rgba(53, 196, 160, .12), rgba(11, 27, 43, .94));
}

.page-home .core-card h3 {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--white);
}

.page-home .core-card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-home .core-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-home .core-card__list li {
  position: relative;
  padding-left: 17px;
}

.page-home .core-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 2px;
  background: var(--brand);
}

.page-home .core-card--mint .core-card__list li::before {
  background: var(--mint);
}

.page-home .card-link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
  padding-bottom: 3px;
  font-size: 15px;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
  border-bottom: 1px solid var(--brand);
}

.page-home .card-link:hover {
  color: var(--brand);
}

.page-home .version-figure {
  margin-top: var(--home-gap);
}

.page-home .filter-bar {
  margin: 4px 0 6px;
}

.page-home .timeline-list {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.page-home .bulletin-item {
  position: relative;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: linear-gradient(120deg, rgba(18, 42, 64, .92), rgba(11, 27, 43, .94));
  overflow: hidden;
  transition: border-color .2s ease, transform .2s ease;
}

.page-home .bulletin-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 3px;
  background: var(--line-strong);
  z-index: 1;
}

.page-home .bulletin-item[data-tags~="version"]::before {
  background: linear-gradient(var(--mint), var(--mint-soft));
}

.page-home .bulletin-item[data-tags~="rule"]::before {
  background: var(--brand);
}

.page-home .bulletin-item:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-home .bulletin-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 14px 16px 14px 20px;
}

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

.page-home .bulletin-time {
  font-size: 12.5px;
  color: var(--mist);
  letter-spacing: .03em;
}

.page-home .bulletin-title {
  flex: 1 1 100%;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-home .bulletin-toggle {
  position: relative;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  margin-left: auto;
  align-self: center;
}

.page-home .bulletin-toggle::before,
.page-home .bulletin-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--brand);
}

.page-home .bulletin-toggle::before {
  width: 9px;
  height: 2px;
}

.page-home .bulletin-toggle::after {
  width: 2px;
  height: 9px;
  transition: opacity .18s ease;
}

.page-home .bulletin-item[open] .bulletin-toggle::after {
  opacity: 0;
}

.page-home .bulletin-body {
  padding: 12px 16px 16px 20px;
  margin-top: 2px;
  border-top: 1px dashed var(--line-soft);
}

.page-home .bulletin-body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-home .bulletin-ref {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--mist);
  margin-bottom: 0;
}

.page-home .bulletin-figure {
  margin-top: var(--home-gap);
}

.page-home .records-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 30px);
  align-items: start;
}

.page-home .path-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-home .step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 16px 16px 18px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .72);
}

.page-home .step:first-child {
  border-left-color: var(--brand);
  background: rgba(240, 90, 60, .1);
}

.page-home .step-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--brand);
  padding-top: 2px;
}

.page-home .step h3 {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--white);
}

.page-home .step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-home .records-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-home .next-title {
  margin: 0 0 16px;
  font-size: clamp(22px, 2.8vw, 28px);
  font-weight: 900;
  letter-spacing: -.015em;
}

.page-home .next-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-home .next-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: rgba(18, 42, 64, .62);
  color: var(--white);
  text-decoration: none;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.page-home .next-link strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
}

.page-home .next-link small {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--mist);
}

.page-home .next-link > span:last-child {
  color: var(--brand);
  flex: 0 0 auto;
}

.page-home .next-link:hover {
  transform: translateY(-2px);
  border-color: var(--brand);
  background: rgba(240, 90, 60, .1);
}

.page-home .index-rail {
  display: grid;
  gap: 6px;
  padding: var(--home-pad);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(170deg, rgba(23, 53, 83, .7), rgba(11, 27, 43, .9));
}

.page-home .index-rail__title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-home .index-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  color: var(--mist);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.45;
  transition: color .18s ease, background .18s ease, border-color .18s ease;
}

.page-home .index-rail__link:hover,
.page-home .index-rail__link.is-active {
  color: var(--white);
  background: rgba(94, 116, 138, .18);
  border-left-color: var(--brand);
}

.page-home .index-rail__num {
  font-size: 12px;
  color: var(--brand);
  flex: 0 0 auto;
}

.page-home .index-rail__cta {
  margin-top: 10px;
  justify-self: stretch;
  text-align: center;
}

@media (min-width: 640px) {
  .page-home .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-home .bulletin-title {
    flex: 1 1 auto;
    min-width: 0;
  }
}

@media (min-width: 900px) {
  .page-home .hero-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: calc(var(--home-gap) + 4px);
  }

  .page-home .hero-main {
    grid-column: 1 / 8;
  }

  .page-home .hero-rail {
    grid-column: 8 / 13;
    grid-row: 1 / 3;
  }

  .page-home .hero-stats {
    grid-column: 1 / 8;
  }

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

  .page-home .records-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

@media (min-width: 980px) {
  .page-home .layout-rail {
    grid-template-columns: minmax(0, 1fr) 258px;
  }

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

@media (min-width: 1120px) {
  .page-home .hero-main h1 {
    max-width: 15ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .rail-list li,
  .page-home .bulletin-item,
  .page-home .next-link,
  .page-home .bulletin-toggle::after {
    transition: none;
  }

  .page-home .rail-list li:hover,
  .page-home .bulletin-item:hover,
  .page-home .next-link:hover {
    transform: none;
  }
}