body:has(.home-portal) {
  --home-gutter: clamp(16px, 2.5vw, 48px);
  background: #0d151b;
  color: #eaf3f1;
}

body:has(.home-portal) > header {
  max-width: none;
  padding-inline: var(--home-gutter);
  padding-bottom: 12px;
}

body:has(.home-portal) > header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

body:has(.home-portal) > header .header-settings {
  display: inline-block;
  font-weight: 500;
  opacity: .75;
}

body:has(.home-portal) > header .header-settings:hover,
body:has(.home-portal) > header .header-settings:focus-visible {
  opacity: 1;
}

body:has(.home-portal) > header a {
  color: #9dafaf;
  font-size: 13px;
  letter-spacing: .04em;
  transition: color .15s ease;
}

body:has(.home-portal) > header a:hover {
  color: #eaf3f1;
}

main:has(.home-portal) {
  max-width: none;
  margin: 0;
  padding-inline: var(--home-gutter);
  background: transparent;
  padding-top: 12px;
}

.home-portal {
  --muted: #9bafba;
  --panel: #17242d;
  --border: #2b3e49;
}

.portal-hero {
  margin-bottom: 28px;
  padding: 24px 0;
}

.portal-hero .eyebrow {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
  margin: 0 0 8px;
  font-weight: 700;
}

.portal-hero h1 {
  font-size: 38px;
  line-height: 1.2;
  letter-spacing: .06em;
  margin: 0 0 10px;
  color: #eaf3f1;
  font-weight: 700;
}

.portal-hero h1 span {
  display: inline-block;
  font-size: 13px;
  letter-spacing: .12em;
  margin-left: 14px;
  color: var(--muted);
  font-weight: 400;
}

.hero-lead {
  color: #bed0d8;
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  max-width: 800px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.app-card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px;
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  overflow: hidden;
}

.app-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, transparent);
  opacity: 0.8;
  transition: opacity .2s ease, height .2s ease;
}

.app-card:hover {
  transform: translateY(-4px);
  border-color: var(--card-accent, #99efcc);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--card-accent, transparent);
}

.app-card:hover::before {
  height: 4px;
  opacity: 1;
}

.app-card:focus-visible {
  outline: 3px solid var(--card-accent, #99efcc);
  outline-offset: 4px;
}

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.card-header-text {
  flex: 1;
}

.card-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--card-accent);
  margin-bottom: 6px;
}

.card-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .04em;
  margin: 0;
  color: #fff;
}

.card-subtitle {
  display: block;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
  font-weight: 400;
  margin-top: 4px;
}

.card-icon-wrap {
  flex-shrink: 0;
}

.app-icon {
  display: block;
  transition: transform .2s ease;
}

.app-card:hover .app-icon {
  transform: scale(1.05);
}

.card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-desc {
  font-size: 13px;
  line-height: 1.7;
  color: #bed0d8;
  margin: 0 0 18px;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
}

.card-tags li {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid #243540;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--muted);
  flex-wrap: wrap;
}

.card-meta-ai {
  background: rgba(234, 243, 241, 0.14);
  color: #eaf3f1;
  border: 1px solid rgba(234, 243, 241, 0.3);
  padding: 1px 7px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .04em;
}

.card-meta-model {
  background: rgba(56, 189, 248, 0.12);
  color: #7dd3fc;
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .02em;
}

.card-meta-version {
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: monospace;
  font-size: 10px;
  color: #9dafaf;
}

.card-meta-date {
  opacity: 0.75;
  font-size: 10px;
}

.play-action {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  min-width: 84px;
  padding: 7px 20px;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .14em;
  color: #0b131b;
  background: var(--card-accent);
  border-radius: 999px;
  box-shadow: 0 2px 10px var(--card-accent-dim, transparent);
  transition: filter .2s ease, box-shadow .2s ease;
}

.app-card:hover .play-action,
.app-card:has(.card-link:focus-visible) .play-action {
  filter: brightness(1.12);
  box-shadow: 0 4px 18px var(--card-accent-dim, transparent), 0 0 0 3px var(--card-accent-dim, transparent);
}

/* ---- カード全体リンク（見出しのリンクを::afterで広げる） ---- */
.card-link {
  color: inherit;
  text-decoration: none;
}

.card-link::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}

.card-link:focus-visible {
  outline: none;
}

.card-link:focus-visible::after {
  outline: 3px solid var(--card-accent, #99efcc);
  outline-offset: -4px;
  border-radius: 14px;
}

/* ---- 他の版を選ぶボタン ---- */
.card-variants {
  position: relative;
  z-index: 2;
  margin: -6px 0 16px;
}

.variants-open {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
  color: #bed0d8;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color .15s ease, color .15s ease, background .15s ease;
}

.variants-open:hover,
.variants-open:focus-visible {
  color: #fff;
  border-color: var(--card-accent, #99efcc);
  background: var(--card-accent-dim, rgba(255, 255, 255, 0.1));
}

.variants-count {
  min-width: 18px;
  padding: 0 5px;
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  color: #0b131b;
  background: var(--card-accent, #99efcc);
  border-radius: 999px;
}

.card-meta-route {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 10px;
  color: #bed0d8;
}

/* ---- 版選択モーダル ---- */
body:has(dialog.variant-dialog[open]) {
  overflow: hidden;
}

.variant-dialog {
  width: min(560px, calc(100% - 32px));
  max-height: min(86vh, 720px);
  padding: 22px;
  color: #eaf3f1;
  background: #17242d;
  border: 1px solid #2b3e49;
  border-top: 3px solid var(--card-accent, #99efcc);
  border-radius: 14px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

.variant-dialog::backdrop {
  background: rgba(5, 10, 14, 0.72);
}

.variant-dialog-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.variant-eyebrow {
  margin: 0 0 4px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--card-accent, #99efcc);
}

.variant-dialog h2 {
  margin: 0;
  font-size: 22px;
  letter-spacing: .04em;
  color: #fff;
}

.variant-dialog h2 span {
  margin-left: 10px;
  font-size: 12px;
  font-weight: 400;
  color: #9bafba;
}

.variant-close {
  width: 34px;
  height: 34px;
  font: inherit;
  font-size: 20px;
  line-height: 1;
  color: #bed0d8;
  background: transparent;
  border: 1px solid #2b3e49;
  border-radius: 8px;
  cursor: pointer;
}

.variant-close:hover,
.variant-close:focus-visible {
  color: #fff;
  border-color: var(--card-accent, #99efcc);
}

.variant-lead {
  margin: 10px 0 14px;
  font-size: 13px;
  line-height: 1.6;
  color: #bed0d8;
}

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

.variant-item {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  color: inherit;
  text-decoration: none;
  background: #0f1b22;
  border: 1px solid #2b3e49;
  border-radius: 10px;
  transition: border-color .15s ease, transform .15s ease;
}

.variant-item:hover,
.variant-item:focus-visible {
  border-color: var(--card-accent, #99efcc);
  transform: translateX(2px);
}

.variant-item.is-stable {
  border-color: var(--card-accent, #99efcc);
}

.variant-item.is-archived {
  opacity: .8;
}

.variant-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.variant-who {
  font-size: 13px;
  font-weight: 700;
  color: #eaf3f1;
}

.variant-route {
  margin-left: 6px;
  padding: 1px 6px;
  font-size: 10px;
  font-weight: 500;
  color: #bed0d8;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 4px;
}

.variant-badges {
  display: inline-flex;
  gap: 6px;
}

.variant-badge {
  padding: 1px 7px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  border-radius: 999px;
}

.badge-stable {
  color: #0b131b;
  background: var(--card-accent, #99efcc);
}

.badge-archived {
  color: #bed0d8;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.variant-model {
  font-size: 15px;
  font-weight: 700;
  color: #7dd3fc;
  overflow-wrap: anywhere;
}

.variant-origin {
  justify-self: start;
  padding: 1px 8px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
}

.variant-origin.is-kit {
  color: #0b131b;
  background: var(--card-accent, #99efcc);
  border-color: var(--card-accent, #99efcc);
}

.variant-sub {
  font-size: 11px;
  color: #9bafba;
}

.variant-note {
  font-size: 12px;
  line-height: 1.5;
  color: #bed0d8;
}

.variant-archive {
  margin-top: 14px;
}

.variant-archive summary {
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 600;
  color: #9bafba;
  cursor: pointer;
}

@media (max-width: 640px) {
  .variant-dialog {
    padding: 16px;
  }
  .variant-dialog h2 span {
    display: block;
    margin: 4px 0 0;
  }
}

.portal-meta {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--muted);
}

.portal-credit {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  column-gap: 6px;
  row-gap: 4px;
  margin: 14px 0 0;
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted);
}

.portal-credit > :not(.portal-endroll) {
  opacity: .6;
}

.portal-endroll {
  margin-left: auto;
  color: inherit;
  text-decoration: none;
  letter-spacing: .1em;
  opacity: .4;
  transition: opacity .2s ease, color .2s ease;
}

.portal-endroll:hover,
.portal-endroll:focus-visible {
  color: #eaf3f1;
  opacity: 1;
}

.portal-credit-label {
  margin-right: 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
}

.portal-credit-item + .portal-credit-item::before {
  content: '·';
  margin-right: 6px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.meta-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #99efcc;
  box-shadow: 0 0 6px #99efcc;
}

@media (max-width: 640px) {
  main:has(.home-portal) {
    margin: 0;
    padding: 12px;
  }
  .portal-hero {
    margin-bottom: 20px;
    padding: 16px 0;
  }
  .portal-hero h1 {
    font-size: 28px;
  }
  .portal-hero h1 span {
    display: block;
    margin: 6px 0 0;
    font-size: 11px;
  }
  .card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .app-card {
    padding: 18px;
  }
  .card-title {
    font-size: 22px;
  }
  .portal-meta {
    flex-direction: column;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .app-card,
  .app-card::before,
  .app-icon,
  .variants-open,
  .portal-endroll,
  .play-action,
  .variant-item {
    transition: none;
  }
}