.page-home {
  --home-glass: rgba(16, 38, 58, 0.78);
  --home-line: rgba(159, 179, 196, 0.22);
  --home-line-strong: rgba(89, 227, 208, 0.32);
  display: block;
  width: 100%;
  color: var(--c-paper);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-home *,
.page-home *::before,
.page-home *::after {
  box-sizing: border-box;
}

/* ---------- shell ---------- */
.home-shell {
  width: var(--shell);
  margin-inline: auto;
  padding-top: clamp(18px, 3vw, 36px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 32px);
}

@media (min-width: 1024px) {
  .home-shell {
    grid-template-columns: 188px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 60px);
    align-items: start;
  }
}

.home-content {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(34px, 5vw, 68px);
}

/* ---------- breadcrumb ---------- */
.page-home .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-scale);
}

.page-home .breadcrumb__list > .breadcrumb__item:last-child {
  color: var(--c-paper);
  opacity: 0.78;
}

.page-home .breadcrumb__sep {
  color: rgba(159, 179, 196, 0.55);
}

/* ---------- axis ---------- */
.home-axis-col {
  min-width: 0;
}

.progress-axis {
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  background: rgba(16, 38, 58, 0.5);
  padding: 10px 10px 8px;
}

.progress-axis__caption {
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-scale);
}

.progress-axis__rail {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.progress-axis__step {
  flex: 0 0 auto;
}

.progress-axis__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--c-scale);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease), background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.progress-axis__link:hover {
  color: var(--c-paper);
  background: rgba(22, 50, 75, 0.72);
  border-color: var(--home-line);
}

.progress-axis__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.progress-axis__index {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

.progress-axis__link.is-active,
.progress-axis__link[aria-current="true"] {
  color: var(--c-paper);
  background: rgba(22, 50, 75, 0.9);
  border-color: var(--home-line-strong);
}

@media (min-width: 1024px) {
  .progress-axis {
    position: sticky;
    top: clamp(84px, 12vh, 128px);
    padding: 14px 12px 16px;
  }

  .progress-axis__rail {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .progress-axis__step {
    flex: 1 1 auto;
  }

  .progress-axis__link {
    width: 100%;
    border-left: 2px solid rgba(159, 179, 196, 0.2);
    border-radius: 0 var(--radius) var(--radius) 0;
  }

  .progress-axis__link:hover,
  .progress-axis__link.is-active,
  .progress-axis__link[aria-current="true"] {
    border-left-color: var(--c-cyan);
  }
}

/* ---------- framed hero ---------- */
.framed-hero {
  position: relative;
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  background: linear-gradient(152deg, rgba(22, 50, 75, 0.9) 0%, rgba(10, 26, 42, 0.94) 62%);
  box-shadow: var(--shadow-panel);
  scroll-margin-top: clamp(72px, 10vh, 110px);
}

.framed-hero::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, rgba(159, 179, 196, 0.5) 0 1px, transparent 1px 18px);
  opacity: 0.66;
  pointer-events: none;
}

.framed-hero::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 9px;
  background-image: repeating-linear-gradient(180deg, rgba(159, 179, 196, 0.42) 0 1px, transparent 1px 18px);
  opacity: 0.66;
  pointer-events: none;
}

.framed-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(24px, 3.4vw, 46px);
}

@media (min-width: 900px) {
  .framed-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

.framed-hero__kicker {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-amber);
}

.framed-hero__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 4.4vw, 50px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--c-paper);
}

.home-hero__lede {
  margin: 0 0 20px;
  max-width: 44ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(241, 245, 248, 0.78);
}

.home-hero__figure {
  margin: 0;
}

.home-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  filter: saturate(0.92) contrast(1.04);
}

.home-hero__figure .figure__caption,
.home-warranty__figure .figure__caption,
.home-series__figure .figure__caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--c-scale);
}

.framed-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 12px clamp(24px, 3.4vw, 46px);
  border-top: 1px solid var(--home-line);
  background: rgba(10, 26, 42, 0.6);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-scale);
}

/* ---------- hero metrics ---------- */
.hero-metrics {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
}

@media (min-width: 640px) {
  .hero-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.hero-metric {
  position: relative;
  padding: 12px 14px;
  border: 1px solid var(--home-line);
  border-left: 3px solid var(--c-amber);
  border-radius: var(--radius);
  background: rgba(10, 26, 42, 0.62);
}

.hero-metric:nth-child(2) {
  border-left-color: var(--c-jade);
}

.hero-metric:nth-child(3) {
  border-left-color: var(--c-cyan);
}

.hero-metric:nth-child(4) {
  border-left-color: var(--c-scale);
}

.hero-metric:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.hero-metric__label {
  margin: 0;
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-scale);
}

.hero-metric__value {
  margin: 6px 0 0;
  font-size: clamp(17px, 2vw, 21px);
  color: var(--c-paper);
}

.hero-metric__note {
  margin: 7px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--c-scale);
}

@media (min-width: 900px) {
  .hero-metric__note {
    position: absolute;
    left: 0;
    top: calc(100% + 6px);
    width: max(240px, 100%);
    margin: 0;
    padding: 10px 12px;
    z-index: 6;
    border: 1px solid var(--home-line-strong);
    border-radius: var(--radius);
    background: var(--glass-strong);
    backdrop-filter: blur(6px);
    color: var(--c-paper);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 160ms var(--ease), transform 160ms var(--ease), visibility 160ms var(--ease);
  }

  .hero-metric:hover .hero-metric__note,
  .hero-metric:focus-within .hero-metric__note {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
}

/* ---------- chapter ---------- */
.home-chapter {
  position: relative;
  scroll-margin-top: clamp(72px, 10vh, 110px);
}

.home-chapter::before {
  content: "";
  display: block;
  width: 64px;
  height: 6px;
  margin-bottom: clamp(14px, 2vw, 20px);
  border-radius: 2px;
  background: linear-gradient(90deg, var(--c-amber), rgba(242, 163, 60, 0));
}

.home-chapter--jade::before {
  background: linear-gradient(90deg, var(--c-jade), rgba(47, 191, 155, 0));
}

.home-chapter--cyan::before {
  background: linear-gradient(90deg, var(--c-cyan), rgba(89, 227, 208, 0));
}

.home-chapter--quiet::before {
  background: linear-gradient(90deg, var(--c-scale), rgba(159, 179, 196, 0));
}

.page-home .chapter-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 12px;
  margin-bottom: clamp(14px, 2vw, 22px);
  border-bottom: 1px solid var(--home-line);
}

.page-home .chapter-head__index {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-amber);
}

.page-home .chapter-head__title {
  flex: 1 1 240px;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.3;
  color: var(--c-paper);
}

.home-chapter__intro {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(241, 245, 248, 0.78);
}

.home-chapter__note {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  padding: 12px 14px;
  max-width: 78ch;
  border-left: 3px solid var(--c-amber);
  border-radius: var(--radius);
  background: rgba(242, 163, 60, 0.08);
  font-size: 13px;
  line-height: 1.75;
  color: rgba(241, 245, 248, 0.82);
}

.home-chapter__note a {
  color: var(--c-cyan);
  text-underline-offset: 3px;
}

.home-subhead {
  margin: clamp(20px, 2.6vw, 28px) 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--c-paper);
}

/* ---------- series ---------- */
.home-batch-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.home-batch-jump .filter-chip {
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-amber);
  background: rgba(242, 163, 60, 0.08);
  border: 1px solid rgba(242, 163, 60, 0.45);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color 140ms var(--ease), color 140ms var(--ease), border-color 140ms var(--ease);
}

.home-batch-jump .filter-chip:hover,
.home-batch-jump .filter-chip:focus-visible {
  outline: none;
  color: var(--c-deep);
  background: var(--c-amber);
  border-color: var(--c-amber-deep);
}

.home-series {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 32px);
}

@media (min-width: 1040px) {
  .home-series {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .home-series .figure--offset {
    position: relative;
    z-index: 2;
    margin-top: 30px;
    margin-left: -30px;
  }
}

.home-table-scroll {
  overflow-x: auto;
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  background: rgba(16, 38, 58, 0.42);
}

.home-series-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
}

.home-series-table caption {
  caption-side: top;
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-scale);
  border-bottom: 1px solid var(--home-line);
}

.home-series-table th,
.home-series-table td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--home-line);
}

.home-series-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-scale);
  background: rgba(22, 50, 75, 0.85);
}

.home-series-table tbody th {
  font-weight: 500;
  color: var(--c-paper);
}

.home-series-table tbody td {
  color: rgba(241, 245, 248, 0.8);
}

.home-series-table tbody tr:nth-child(even) {
  background: rgba(22, 50, 75, 0.26);
}

.home-series-table tbody tr:hover {
  background: rgba(22, 50, 75, 0.6);
}

.home-series-table tbody tr:target {
  background: rgba(242, 163, 60, 0.14);
  box-shadow: inset 3px 0 0 var(--c-amber);
}

.page-home a.batch-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: border-color 140ms var(--ease);
}

.page-home a.batch-tag:hover,
.page-home a.batch-tag:focus-visible {
  outline: none;
  border-color: var(--c-cyan);
  box-shadow: var(--focus-ring);
}

.page-home a.batch-tag:hover .batch-tag__code,
.page-home a.batch-tag:focus-visible .batch-tag__code {
  color: var(--c-cyan);
}

.home-series__figure {
  margin: 0;
}

.home-series__figure .figure__media {
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--home-line);
}

.home-series__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- warranty ---------- */
.home-warranty {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 32px);
}

@media (min-width: 1024px) {
  .home-warranty {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

.home-warranty__col {
  min-width: 0;
}

.warranty-list .disclosure {
  margin-bottom: 10px;
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  background: rgba(16, 38, 58, 0.58);
  overflow: hidden;
}

.warranty-list .disclosure[open] {
  background: rgba(22, 50, 75, 0.72);
  border-color: var(--home-line-strong);
}

.warranty-list .disclosure__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--c-paper);
  cursor: pointer;
  list-style: none;
}

.warranty-list .disclosure__summary::-webkit-details-marker {
  display: none;
}

.warranty-list .disclosure__summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-cyan);
}

.warranty-list .disclosure[open] .disclosure__summary::after {
  content: "–";
}

.warranty-list .disclosure__summary:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.warranty-list .disclosure__body {
  padding: 0 16px 15px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(241, 245, 248, 0.76);
}

.warranty-list .mono {
  color: var(--c-amber);
}

.badge-legend {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.badge-legend__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(159, 179, 196, 0.18);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(241, 245, 248, 0.78);
}

.badge-legend__item .status-badge {
  flex: 0 0 auto;
}

.page-home .status-badge--archived {
  color: var(--c-scale);
  background: rgba(159, 179, 196, 0.14);
  border: 1px dashed rgba(159, 179, 196, 0.5);
}

.home-warranty__figure {
  margin: 0;
}

.home-warranty__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  filter: saturate(0.9);
}

/* ---------- service ---------- */
.home-service {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.4vw, 28px);
}

@media (min-width: 820px) {
  .home-service {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.home-service .panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 24px);
  border: 1px solid var(--home-line);
  border-radius: var(--radius);
  background: rgba(16, 38, 58, 0.6);
}

.home-service .panel--solid {
  border-left: 3px solid var(--c-amber);
  background: linear-gradient(158deg, rgba(22, 50, 75, 0.96), rgba(16, 38, 58, 0.96));
}

.home-service .panel--glass {
  border-left: 3px solid var(--c-jade);
  background: rgba(16, 38, 58, 0.5);
  backdrop-filter: blur(4px);
}

.home-service .panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.home-service .panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--c-paper);
}

.home-service .panel__foot {
  margin-top: auto;
  padding-top: 4px;
}

.home-service__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: svc-step;
  display: grid;
  gap: 9px;
}

.home-service__steps li {
  display: flex;
  gap: 10px;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(241, 245, 248, 0.8);
}

.home-service__steps li::before {
  counter-increment: svc-step;
  content: counter(svc-step, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.9;
  color: var(--c-jade);
}

.home-service__strip {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  padding: 13px 16px;
  border-left: 3px solid var(--c-jade);
  border-radius: var(--radius);
  background: rgba(47, 191, 155, 0.08);
  font-size: 13px;
  line-height: 1.78;
  color: rgba(241, 245, 248, 0.82);
}

.home-service__strip .mono {
  color: var(--c-cyan);
}

/* ---------- index ---------- */
.home-index {
  position: relative;
  overflow: hidden;
  padding-top: clamp(24px, 3vw, 38px);
  border-top: 1px solid var(--home-line);
}

.home-index__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.1;
  filter: grayscale(0.4);
  pointer-events: none;
  z-index: 0;
}

.home-index__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.8vw, 34px);
}

@media (min-width: 880px) {
  .home-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

.home-topic-list li {
  border-bottom: 1px solid var(--home-line);
}

.home-topic-list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 4px;
  color: var(--c-paper);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 140ms var(--ease), background-color 140ms var(--ease), padding-left 140ms var(--ease);
}

.home-topic-list a:hover,
.home-topic-list a:focus-visible {
  outline: none;
  padding-left: 12px;
  color: var(--c-cyan);
  background: rgba(22, 50, 75, 0.55);
}

.home-topic-list .mono {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--c-scale);
}

.home-index__note {
  position: relative;
  z-index: 1;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  max-width: 70ch;
  font-size: 13px;
  line-height: 1.78;
  color: rgba(241, 245, 248, 0.7);
}

/* ---------- misc ---------- */
.page-home a {
  text-underline-offset: 3px;
}

.page-home :focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-home .btn:focus-visible {
  box-shadow: var(--focus-ring);
}

@media (min-width: 640px) {
  .home-service__steps {
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home *,
  .page-home *::before,
  .page-home *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }

  .hero-metric__note {
    transform: none !important;
  }
}