.home-hero {
  min-height: calc(920px - var(--header-height));
}

.home-hero .hero-inner {
  padding-top: 30px;
}

.home-hero .hero-description strong {
  color: var(--color-text);
}

.home-fact-band {
  min-height: 58px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-deep);
  box-shadow: var(--shadow-inset);
}

.home-fact-band span {
  min-width: 0;
  padding: 10px 16px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-align: center;
}

.home-fact-band span:not(:last-child) {
  border-right: 1px solid var(--color-border);
}

.home-fact-band strong {
  color: var(--color-accent);
  font-weight: 700;
}

.feature-browser {
  position: relative;
  display: grid;
  grid-template-columns: minmax(210px, 0.7fr) minmax(0, 2.3fr);
  gap: clamp(22px, 4vw, 54px);
  align-items: start;
}

.feature-browser::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 38px;
  left: 180px;
  width: 120px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent-dark), var(--color-transparent));
}

.feature-index[role="tablist"] {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  width: 100%;
  display: grid;
  gap: 0;
  padding: 0;
  overflow: visible;
  border: 0;
  border-radius: 0;
  background: var(--color-transparent);
}

.feature-index [role="tab"] {
  position: relative;
  min-height: 68px;
  width: 100%;
  display: grid;
  grid-template-columns: 64px 1fr;
  align-items: center;
  padding: 0 14px;
  border: 0;
  border-bottom: 1px solid var(--color-border);
  border-radius: 0;
  color: var(--color-text-muted);
  background: var(--color-transparent);
  text-align: left;
  box-shadow: none;
}

.feature-index [role="tab"]::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--color-transparent);
}

.feature-index [role="tab"]:hover {
  color: var(--color-text);
  background: var(--color-highlight);
}

.feature-index [role="tab"][aria-selected="true"] {
  color: var(--color-text);
  background: linear-gradient(90deg, var(--color-highlight), var(--color-transparent));
  box-shadow: none;
}

.feature-index [role="tab"][aria-selected="true"]::before {
  background: var(--color-accent);
  box-shadow: 0 0 14px var(--color-accent);
}

.feature-tab-code {
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
}

.feature-index [role="tab"][aria-selected="true"] .feature-tab-code {
  color: var(--color-accent);
}

.feature-detail {
  min-height: 560px;
  overflow: hidden;
  border: 1px solid var(--color-border-bright);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 18% 0%, var(--color-glow-soft), var(--color-transparent) 36%),
    linear-gradient(145deg, var(--color-panel-raised), var(--color-panel));
  box-shadow: var(--shadow-panel), var(--shadow-inset);
}

.feature-detail [role="tabpanel"] {
  min-height: 560px;
  margin-top: 0;
  padding: clamp(28px, 5vw, 58px);
}

.feature-detail [role="tabpanel"][hidden] {
  display: none;
}

.feature-detail-code {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.feature-detail h3 {
  max-width: 700px;
  margin-bottom: 22px;
  font-family: var(--font-display);
  font-size: clamp(30px, 3.7vw, 46px);
  font-weight: 500;
}

.feature-detail p {
  max-width: 760px;
  font-size: 1rem;
}

.feature-points {
  max-width: 720px;
  margin: 28px 0 0;
  padding: 22px 0 0;
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.feature-points li {
  display: flex;
  gap: 10px;
  color: var(--color-text-muted);
}

.feature-points li::before {
  content: "↳";
  flex: 0 0 auto;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.selection-principles {
  display: grid;
  grid-template-columns: minmax(240px, 0.85fr) minmax(0, 1.65fr);
  gap: clamp(28px, 6vw, 80px);
  margin-top: clamp(64px, 8vw, 104px);
  padding-top: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--color-border);
}

.selection-intro .mono,
.route-guidance .mono,
.server-status-heading .mono,
.traffic-pack-heading .mono {
  color: var(--color-accent);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
}

.selection-intro h3 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
}

.principle-list {
  display: grid;
}

.principle-list article {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.principle-list article:first-child {
  padding-top: 0;
}

.principle-mark {
  width: 10px;
  height: 10px;
  margin-top: 7px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-glow);
  box-shadow: 0 0 16px var(--color-glow);
}

.principle-list h4 {
  margin-bottom: 8px;
  font-size: 1rem;
}

.principle-list p {
  margin-bottom: 0;
}

.route-guidance {
  display: grid;
  grid-template-columns: minmax(190px, 0.8fr) minmax(0, 1.8fr) auto;
  gap: clamp(20px, 4vw, 48px);
  align-items: start;
  margin-top: 26px;
  padding: 28px;
  border-left: 2px solid var(--color-accent-dark);
  background: linear-gradient(90deg, var(--color-highlight), var(--color-transparent));
}

.route-guidance h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 500;
}

.route-guidance p {
  margin-bottom: 0;
}

.route-guidance .article-link {
  white-space: nowrap;
}

.server-status-shell {
  margin-top: 34px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(var(--color-grid) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--color-grid) 1px, var(--color-transparent) 1px),
    var(--color-bg-deep);
  background-size: 32px 32px;
}

.server-status-heading {
  display: grid;
  grid-template-columns: minmax(180px, 0.7fr) minmax(0, 1.3fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 22px;
}

.server-status-heading h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 500;
}

.server-status-heading p {
  margin-bottom: 0;
}

.server-status {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.srv-row {
  min-width: 0;
  min-height: 54px;
  display: grid;
  grid-template-columns: 10px 24px minmax(80px, 1fr) auto auto auto;
  gap: 9px;
  align-items: center;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-inset);
}

.srv-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: var(--radius-pill);
  background: var(--color-success);
  box-shadow: 0 0 11px var(--color-success);
  animation: srv-breathe 2.8s ease-in-out infinite;
}

.srv-flag {
  overflow: hidden;
  font-size: 1rem;
  line-height: 1;
}

.srv-name {
  min-width: 0;
  overflow: hidden;
  color: var(--color-text);
  font-size: 0.82rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.srv-type {
  max-width: 92px;
  padding: 2px 7px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.srv-ms,
.srv-bw {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  white-space: nowrap;
}

.srv-ms {
  color: var(--color-accent-soft);
}

.platform-card {
  background:
    linear-gradient(155deg, var(--color-highlight), var(--color-transparent)),
    var(--color-panel);
}

.platform-card p {
  min-height: 70px;
}

.client-note {
  margin-top: 28px;
  margin-bottom: 0;
}

.plan-audience {
  min-height: 84px;
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.traffic-pack-note {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.7fr);
  gap: clamp(28px, 6vw, 80px);
  margin-top: 42px;
  padding: clamp(26px, 5vw, 46px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 10% 0%, var(--color-glow-soft), var(--color-transparent) 42%),
    var(--color-bg-deep);
}

.traffic-pack-heading h3 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
}

.traffic-pack-content p:last-of-type {
  margin-bottom: 22px;
}

.journal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.journal-footer p {
  max-width: 760px;
  margin-bottom: 0;
}

.journal-footer p a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-dark);
  text-underline-offset: 0.18em;
}

@keyframes srv-breathe {
  0%,
  100% {
    opacity: 0.55;
    transform: scale(0.84);
  }

  50% {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 980px) {
  .home-fact-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-fact-band span:nth-child(2) {
    border-right: 0;
  }

  .home-fact-band span:nth-child(-n+2) {
    border-bottom: 1px solid var(--color-border);
  }

  .feature-browser {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 22px;
  }

  .feature-index [role="tab"] {
    grid-template-columns: 52px 1fr;
    padding-inline: 10px;
    font-size: 0.86rem;
  }

  .feature-detail [role="tabpanel"] {
    padding: 32px;
  }

  .selection-principles,
  .traffic-pack-note {
    grid-template-columns: 1fr;
  }

  .route-guidance {
    grid-template-columns: 1fr;
  }

  .server-status {
    grid-template-columns: 1fr;
  }

  .platform-card p,
  .plan-audience {
    min-height: 0;
  }
}

@media (max-width: 768px) {
  .home-hero {
    min-height: auto;
  }

  .home-fact-band span {
    font-size: 0.66rem;
  }

  .feature-browser {
    display: block;
  }

  .feature-browser::before {
    display: none;
  }

  .feature-index[role="tablist"] {
    position: relative;
    top: auto;
    display: flex;
    gap: 6px;
    margin-bottom: 18px;
    padding: 6px;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-deep);
    overscroll-behavior-inline: contain;
  }

  .feature-index [role="tab"] {
    min-height: 44px;
    width: auto;
    flex: 0 0 auto;
    display: block;
    padding-inline: 14px;
    border: 1px solid var(--color-transparent);
    border-radius: var(--radius-sm);
    white-space: nowrap;
  }

  .feature-index [role="tab"]::before,
  .feature-tab-code {
    display: none;
  }

  .feature-index [role="tab"][aria-selected="true"] {
    border-color: var(--color-accent);
    color: var(--color-accent-ink);
    background: var(--color-accent);
  }

  .feature-detail,
  .feature-detail [role="tabpanel"] {
    min-height: 0;
  }

  .feature-detail [role="tabpanel"] {
    padding: 26px;
  }

  .server-status-heading {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .srv-row {
    grid-template-columns: 9px 22px minmax(70px, 1fr) auto auto;
  }

  .srv-type {
    display: none;
  }

  .journal-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .home-hero .hero-inner {
    padding-top: 24px;
  }

  .home-fact-band {
    min-height: 0;
    grid-template-columns: 1fr;
  }

  .home-fact-band span {
    padding-block: 9px;
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .home-fact-band span:last-child {
    border-bottom: 0;
  }

  .selection-principles {
    margin-top: 56px;
  }

  .route-guidance,
  .server-status-shell,
  .traffic-pack-note {
    padding: 20px;
  }

  .srv-row {
    grid-template-columns: 8px 20px minmax(64px, 1fr) auto;
    gap: 7px;
    padding-inline: 9px;
  }

  .srv-bw {
    display: none;
  }

  .feature-detail {
    border-radius: var(--radius-lg);
  }

  .feature-detail [role="tabpanel"] {
    padding: 22px;
  }

  .feature-detail h3 {
    font-size: 28px;
  }

  .journal-footer .button {
    width: 100%;
  }
}

@media (max-width: 390px) {
  .srv-row {
    grid-template-columns: 7px 18px minmax(58px, 1fr) auto;
  }

  .srv-name {
    font-size: 0.76rem;
  }

  .srv-ms {
    font-size: 0.62rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .srv-dot {
    animation: none;
    opacity: 1;
  }
}