.page-home {
  --home-rail: 248px;
  --home-gap: clamp(24px, 3.2vw, 52px);
  --home-soft: rgba(51, 242, 227, .09);
  --home-gold-soft: rgba(201, 161, 92, .12);
  display: block;
  position: relative;
  color: var(--text);
  background: var(--void);
}

.page-home__stage {
  display: block;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
  padding-top: clamp(10px, 1.6vw, 18px);
  padding-bottom: clamp(40px, 6vw, 84px);
}

/* ---------- left rail ---------- */

.page-home__rail {
  display: block;
  padding-bottom: clamp(20px, 3vw, 34px);
  border-bottom: 1px solid var(--line);
}

.page-home__rail-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-home__rail-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-home__rail-title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .04em;
}

.page-home__rail-lead {
  margin: 10px 0 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

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

.page-home__fold-item {
  border-bottom: 1px dashed rgba(29, 53, 96, .9);
}

.page-home__fold-sum {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  transition: color var(--dur) var(--ease);
}

.page-home__fold-sum::-webkit-details-marker {
  display: none;
}

.page-home__fold-sum:hover {
  color: var(--cyan);
}

.page-home__fold-sum::after {
  content: "";
  margin-left: auto;
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform var(--dur) var(--ease);
}

.page-home__fold-item[open] .page-home__fold-sum::after {
  transform: rotate(-135deg) translate(-1px, -1px);
}

.page-home__fold-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-home__fold-name {
  font-size: 14.5px;
}

.page-home__fold-body {
  margin: 0 0 12px;
  padding-left: 34px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- hero ---------- */

.page-home__hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(24px, 4vw, 46px) 0 clamp(32px, 5vw, 62px);
}

.page-home__hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  opacity: .52;
}

.page-home__hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 72% 46%;
  -webkit-mask-image: radial-gradient(ellipse 72% 82% at 74% 44%, #000 6%, transparent 68%);
  mask-image: radial-gradient(ellipse 72% 82% at 74% 44%, #000 6%, transparent 68%);
}

.page-home__hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: repeating-linear-gradient(to bottom, rgba(51, 242, 227, .055) 0 1px, transparent 1px 5px);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
}

.page-home__hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: center;
}

.page-home__hero-copy {
  min-width: 0;
}

.page-home__hero-title {
  margin: 0;
  font-size: clamp(38px, 8.4vw, 68px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: .02em;
  color: var(--text);
}

.page-home__hero-title-em {
  display: block;
  color: var(--cyan);
  text-shadow: 0 0 42px rgba(51, 242, 227, .38);
}

.page-home__hero-lead {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-home__hero-meta {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 1.9;
  color: var(--warmgray);
}

/* ---------- hero deck card ---------- */

.page-home__deck {
  position: relative;
  display: grid;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px);
  border-radius: var(--radius);
  border: 1px solid rgba(51, 242, 227, .36);
  background: linear-gradient(158deg, rgba(51, 242, 227, .1), rgba(12, 23, 51, .94) 46%, rgba(5, 9, 26, .97));
  box-shadow: 0 0 0 1px rgba(51, 242, 227, .06), 0 28px 74px -34px rgba(51, 242, 227, .62);
  min-width: 0;
}

.page-home__deck::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background-image: repeating-linear-gradient(to bottom, rgba(51, 242, 227, .07) 0 1px, transparent 1px 4px);
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 60%);
  mask-image: linear-gradient(180deg, #000, transparent 60%);
}

.page-home__deck-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(51, 242, 227, .26);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-home__deck-num {
  color: var(--cyan);
  font-weight: 700;
}

.page-home__deck-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(51, 242, 227, .9);
}

.page-home__deck-current {
  margin-left: auto;
  color: var(--text);
  letter-spacing: .04em;
}

.page-home__deck-media {
  margin: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

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

.page-home__deck-cats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: rgba(29, 53, 96, .7);
  border: 1px solid rgba(29, 53, 96, .7);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-home__deck-cats li {
  padding: 9px 10px;
  background: rgba(12, 23, 51, .92);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--muted);
}

.page-home__deck-cats li:first-child {
  color: var(--cyan);
}

/* ---------- split entries ---------- */

.page-home__split {
  padding: clamp(38px, 6vw, 74px) 0 0;
}

.page-home__split-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 34px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home__entry {
  padding: clamp(20px, 3vw, 30px);
  background: var(--panel);
  min-width: 0;
}

.page-home__entry--new {
  background: linear-gradient(166deg, rgba(51, 242, 227, .1), rgba(12, 23, 51, .97) 62%);
}

.page-home__entry--old {
  background: linear-gradient(166deg, rgba(201, 161, 92, .13), rgba(18, 16, 14, .97) 62%);
}

.page-home__entry-tag {
  margin: 0 0 14px;
}

.page-home__entry-title {
  margin: 0 0 16px;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 800;
  line-height: 1.35;
}

.page-home__entry--old .page-home__entry-title {
  color: var(--gold);
}

.page-home__entry-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-home__entry-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 8px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-home__entry-list .og-mono {
  color: var(--cyan-deep);
  font-size: 11.5px;
  padding-top: 3px;
}

.page-home__entry--old .page-home__entry-list .og-mono {
  color: var(--gold);
}

.page-home__entry-link {
  display: inline-block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 227, .38);
  padding-bottom: 2px;
}

.page-home__entry--old .page-home__entry-link {
  color: var(--gold);
  border-bottom-color: rgba(201, 161, 92, .45);
}

.page-home__entry-link:hover {
  color: var(--text);
}

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

.page-home__split-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- switch ---------- */

.page-home__switch {
  padding: clamp(42px, 6.4vw, 82px) 0 0;
}

.page-home__switch-grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(22px, 3vw, 34px);
}

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

.page-home__switch-step {
  display: grid;
  gap: 6px;
  padding: clamp(16px, 2.4vw, 22px) 0;
  border-bottom: 1px solid var(--line);
}

.page-home__switch-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-home__switch-step strong {
  font-size: 16.5px;
  font-weight: 800;
  letter-spacing: .02em;
}

.page-home__switch-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

.page-home__switch-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home__fact {
  display: grid;
  gap: 4px;
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 2vw, 22px);
  background: radial-gradient(circle at 18% 12%, rgba(51, 242, 227, .14), transparent 62%), var(--panel);
}

.page-home__fact-num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-home__fact-label {
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- legacy ---------- */

.page-home__legacy {
  padding: clamp(42px, 6.4vw, 82px) 0 0;
}

.eyebrow--gold {
  color: var(--gold);
}

.page-home__legacy-steps {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: legacy;
  display: grid;
  gap: 1px;
  background: rgba(201, 161, 92, .2);
  border: 1px solid rgba(201, 161, 92, .24);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-home__legacy-step {
  padding: clamp(18px, 2.6vw, 26px);
  background: linear-gradient(150deg, rgba(201, 161, 92, .09), rgba(16, 15, 13, .96) 58%);
}

.page-home__legacy-idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-home__legacy-step h3 {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: #EFE3CE;
}

.page-home__legacy-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--warmgray);
}

.page-home__legacy-note {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--warmgray);
}

.page-home__legacy-note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 161, 92, .42);
}

.page-home__legacy-note a:hover {
  color: #F2E4C6;
}

/* ---------- records ---------- */

.page-home__records {
  padding: clamp(42px, 6.4vw, 82px) 0 0;
}

.page-home__records-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-home__record {
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--radius-sm);
  border-left: 2px solid var(--cyan-deep);
  background: linear-gradient(120deg, rgba(51, 242, 227, .06), rgba(12, 23, 51, .5) 46%, transparent);
}

.page-home__record-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-home__record h3 {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 800;
}

.page-home__record p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

.page-home__records-note {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-home__records-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 227, .38);
}

/* ---------- update ---------- */

.page-home__update {
  margin-top: clamp(42px, 6.4vw, 82px);
}

.page-home__update-inner {
  padding: clamp(24px, 4vw, 46px) clamp(20px, 3.4vw, 42px) clamp(20px, 3vw, 34px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: radial-gradient(circle at 88% 4%, rgba(255, 124, 51, .16), transparent 58%), linear-gradient(180deg, rgba(12, 23, 51, .9), rgba(5, 9, 26, .96));
}

.page-home__update-grid {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-home__update-mark {
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-home__update-day {
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--orange);
  text-shadow: 0 0 46px rgba(255, 124, 51, .34);
}

.page-home__update-time {
  font-size: clamp(14px, 2vw, 17px);
  letter-spacing: .14em;
  color: var(--text);
}

.page-home__update-sub {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--muted);
}

.page-home__update-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-home__update-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

.page-home__update-figure {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
}

.page-home__update-figure img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- paths ---------- */

.page-home__paths {
  padding: clamp(42px, 6.4vw, 82px) 0 0;
}

.page-home__path-list {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-home__path {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-home__path-idx {
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--cyan-deep);
}

.page-home__path-name {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: .02em;
}

.page-home__path-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

.page-home__path-link {
  justify-self: start;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 227, .36);
  padding-bottom: 2px;
}

.page-home__path-link:hover {
  color: var(--text);
}

.page-home__paths-foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home__paths-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 227, .34);
}

/* ---------- V4 floating rules ---------- */

.page-home__v4-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-home__v4-fab {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 55;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  background: var(--panel);
  border: 1px solid rgba(51, 242, 227, .5);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 0 34px -10px rgba(51, 242, 227, .7);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-home__v4-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 44px -8px rgba(51, 242, 227, .9);
}

.page-home__v4 {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: none;
  place-items: center;
  padding: clamp(16px, 4vw, 40px);
}

.page-home__v4-input:checked ~ .page-home__v4 {
  display: grid;
}

.page-home__v4-mask {
  position: absolute;
  inset: 0;
  background: rgba(5, 9, 26, .84);
  -webkit-backdrop-filter: blur(5px);
  backdrop-filter: blur(5px);
  cursor: pointer;
}

.page-home__v4-panel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 560px;
  max-height: 82vh;
  overflow-y: auto;
  padding: clamp(22px, 4vw, 36px);
  border-radius: var(--radius);
  border: 1px solid rgba(51, 242, 227, .3);
  background: linear-gradient(160deg, rgba(51, 242, 227, .07), var(--panel) 46%, var(--void));
  box-shadow: 0 34px 90px -40px rgba(51, 242, 227, .7);
}

.page-home__v4-title {
  margin: 6px 0 14px;
  font-size: clamp(22px, 3.4vw, 28px);
  font-weight: 900;
  letter-spacing: .03em;
}

.page-home__v4-lead {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-home__v4-list {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
}

.page-home__v4-list li {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 10px;
  padding-top: 10px;
  border-bottom: 1px dashed rgba(29, 53, 96, .9);
  padding-bottom: 10px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text);
}

.page-home__v4-list .og-mono {
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-home__v4-close {
  cursor: pointer;
}

/* ---------- media queries ---------- */

@media (min-width: 640px) {
  .page-home__deck-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-home__split-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-home__record--wide {
    grid-column: span 2;
  }

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

@media (min-width: 900px) {
  .page-home__hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-home__switch-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

  .page-home__update-grid {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-home__stage {
    display: grid;
    grid-template-columns: var(--home-rail) minmax(0, 1fr);
    gap: var(--home-gap);
    align-items: start;
  }

  .page-home__rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    padding-bottom: 0;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    padding-right: 22px;
  }

  .page-home__canvas {
    min-width: 0;
  }

  .page-home__hero {
    padding-top: clamp(8px, 1.4vw, 16px);
  }
}

@media (min-width: 1180px) {
  .page-home__path {
    grid-template-columns: 76px minmax(0, 210px) minmax(0, 1fr) auto;
    align-items: baseline;
    column-gap: clamp(16px, 2.4vw, 32px);
  }

  .page-home__path-link {
    justify-self: end;
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home__fold-sum,
  .page-home__fold-sum::after,
  .page-home__path,
  .page-home__v4-fab {
    transition: none;
  }

  .page-home__v4-fab:hover {
    transform: none;
  }
}
<<<END>>>