:root {
  --bg: #07111b;
  --bg-elevated: #0c1826;
  --surface: rgba(10, 20, 33, 0.82);
  --surface-strong: rgba(13, 24, 38, 0.94);
  --surface-soft: rgba(255, 255, 255, 0.04);
  --card: rgba(255, 255, 255, 0.045);
  --card-strong: rgba(255, 255, 255, 0.08);
  --line: rgba(156, 182, 214, 0.17);
  --line-strong: rgba(156, 182, 214, 0.28);
  --text: #edf4ff;
  --muted: #a2b3ca;
  --muted-strong: #bfd1eb;
  --shadow: 0 24px 80px rgba(1, 7, 16, 0.42);
  --shadow-soft: 0 10px 35px rgba(1, 7, 16, 0.26);
  --radius-xs: 0.75rem;
  --radius-sm: 1rem;
  --radius-md: 1.5rem;
  --radius-lg: 2rem;
  --radius-xl: 2.75rem;
  --container: 1180px;
  --header-h: 5rem;
  --focus: 0 0 0 3px rgba(140, 214, 255, 0.32);
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --accent: #8ad8ff;
  --accent-2: #76ffc6;
  --accent-strong: #43c6ff;
  --accent-soft: rgba(138, 216, 255, 0.18);
  --accent-glow: radial-gradient(circle at top left, rgba(138, 216, 255, 0.28), transparent 52%), radial-gradient(circle at bottom right, rgba(118, 255, 198, 0.16), transparent 42%);
}

body.site-product {
  --accent: #9bb5ff;
  --accent-2: #67f0d1;
  --accent-strong: #7190ff;
  --accent-soft: rgba(155, 181, 255, 0.18);
  --focus: 0 0 0 3px rgba(155, 181, 255, 0.32);
  --accent-glow: radial-gradient(circle at top left, rgba(155, 181, 255, 0.28), transparent 52%), radial-gradient(circle at bottom right, rgba(103, 240, 209, 0.16), transparent 42%);
}

* { box-sizing: border-box; }
html {
  scroll-padding-top: calc(var(--header-h) + 1.25rem);
  color-scheme: dark;
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
body {
  margin: 0;
  min-width: 320px;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at 10% 15%, rgba(67, 198, 255, 0.1), transparent 34%),
    radial-gradient(circle at 90% 0%, rgba(118, 255, 198, 0.08), transparent 28%),
    linear-gradient(180deg, #08111b 0%, #0a1421 40%, #07111b 100%);
  line-height: 1.65;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.8), transparent 88%);
  pointer-events: none;
  opacity: 0.18;
}
body.menu-open { overflow: hidden; }
a {
  color: inherit;
  text-decoration: none;
}
a:hover { text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
main { position: relative; z-index: 1; }
main:focus { outline: none; }
section[id], div[id], article[id] { scroll-margin-top: calc(var(--header-h) + 1.25rem); }

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  padding: 0.8rem 1rem;
  background: #ffffff;
  color: #08111b;
  border-radius: 999px;
  font-weight: 700;
  transform: translateY(-180%);
  transition: transform 0.2s ease;
  z-index: 2000;
}
.skip-link:focus-visible { transform: translateY(0); }

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 0.75rem;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: rgba(7, 14, 23, 0.78);
  border-bottom: 1px solid rgba(156, 182, 214, 0.08);
}
.nav-shell {
  min-height: var(--header-h);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  min-width: 0;
}
.brand-mark {
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 0.95rem;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02)),
    var(--accent-glow);
  border: 1px solid rgba(255, 255, 255, 0.11);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.16), var(--shadow-soft);
  position: relative;
}
.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  inset: 0.55rem;
  border-radius: 0.65rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
}
.brand-mark::after {
  inset: 0.95rem 0.75rem;
  border-radius: 999px;
  border-color: var(--accent);
}
.brand-copy {
  display: grid;
  gap: 0.12rem;
  min-width: 0;
}
.brand-name {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.brand-tag {
  color: var(--muted);
  font-size: 0.84rem;
}
.site-nav {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.45rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}
.site-nav a {
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: var(--muted-strong);
  font-size: 0.96rem;
  font-weight: 600;
  transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}
.header-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}
.menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.9rem;
  height: 2.9rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  cursor: pointer;
}
.header-mini-link {
  display: inline-flex;
  align-items: center;
  color: var(--muted-strong);
  font-size: 0.94rem;
  font-weight: 600;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.95rem;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary {
  color: #06121d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 18px 45px rgba(49, 162, 220, 0.28);
}
.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.11);
}
.button-ghost {
  color: var(--muted-strong);
  background: transparent;
  border-color: rgba(255, 255, 255, 0.08);
}
.button-ghost:hover,
.button-secondary:hover { background: rgba(255, 255, 255, 0.09); }
.button.small { min-height: 2.4rem; padding-inline: 0.95rem; font-size: 0.88rem; }
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.8rem;
}
.hero {
  padding: 4.5rem 0 2.4rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.88fr);
  gap: 1.5rem;
  align-items: stretch;
}
.hero-card,
.surface-card,
.band,
.copy-card,
.contact-card,
.tab-panel,
.faq-item,
.metric-card,
.story-card,
.summary-card,
.stack-card,
.result-card,
.glossary-card,
.notice-card {
  background: linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.02));
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow: var(--shadow);
}
.hero-card {
  padding: clamp(1.7rem, 2vw, 2.25rem);
  border-radius: var(--radius-xl);
  min-height: 100%;
  position: relative;
  overflow: hidden;
}
.hero-card::before,
.band::before,
.page-hero-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent-glow);
  pointer-events: none;
}
.hero-card > *,
.band > *,
.page-hero-card > * { position: relative; z-index: 1; }
.page-hero { padding: 3.5rem 0 1.8rem; }
.page-hero-card {
  position: relative;
  padding: clamp(1.5rem, 2.2vw, 2rem);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.025));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.78rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted-strong);
  font-size: 0.82rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
}
.hero h1,
.page-hero h1,
.section-title,
.band h2 {
  margin: 1rem 0 0;
  letter-spacing: -0.04em;
  line-height: 1.03;
}
.hero h1 { font-size: clamp(2.6rem, 5vw, 4.9rem); max-width: 14ch; }
.page-hero h1 { font-size: clamp(2.3rem, 4vw, 3.8rem); max-width: 15ch; }
.hero-lead,
.page-lead,
.section-lead {
  font-size: clamp(1.02rem, 1.4vw, 1.18rem);
  color: var(--muted-strong);
  max-width: 64ch;
  margin-top: 1rem;
}
.hero-note,
.meta-note,
.small-note {
  color: var(--muted);
  font-size: 0.94rem;
}
.hero-side {
  display: grid;
  gap: 1rem;
}
.metric-stack,
.card-stack,
.section-stack { display: grid; gap: 1rem; }
.metric-card,
.surface-card,
.story-card,
.summary-card,
.stack-card,
.contact-card,
.copy-card,
.notice-card {
  border-radius: var(--radius-lg);
  padding: 1.25rem;
}
.metric-card { min-height: 100%; }
.metric-card strong,
.copy-card strong,
.summary-card strong { display: block; font-size: 1.05rem; }
.metric-value {
  display: block;
  font-size: 1.65rem;
  letter-spacing: -0.03em;
  margin-bottom: 0.35rem;
}
.metric-detail,
.card-text,
.card-list,
.summary-card p,
.stack-card p,
.contact-card p { color: var(--muted-strong); }
.metric-grid,
.card-grid,
.story-grid,
.link-grid,
.stack-grid,
.contact-grid,
.detail-grid,
.support-grid,
.routing-grid {
  display: grid;
  gap: 1rem;
}
.metric-grid.cols-3,
.card-grid.cols-3,
.story-grid.cols-3,
.support-grid.cols-3,
.routing-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.cols-4,
.support-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.story-grid.cols-2,
.detail-grid.cols-2,
.contact-grid.cols-2,
.routing-grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card,
.link-card,
.support-card,
.step-card,
.inline-card {
  height: 100%;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.025));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
}
.link-card:hover,
.card:hover,
.support-card:hover,
.step-card:hover {
  border-color: rgba(255, 255, 255, 0.16);
  transform: translateY(-2px);
}
.card-kicker,
.section-kicker {
  display: inline-block;
  color: var(--accent);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
  margin-bottom: 0.7rem;
}
.section { padding: 2rem 0 1rem; }
.section-header {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  max-width: 58rem;
}
.section-title { font-size: clamp(1.9rem, 3vw, 3rem); }
.section-title.tight { max-width: 18ch; }
.section-subtitle {
  color: var(--muted-strong);
  font-size: 1.04rem;
  max-width: 62ch;
}
.pill-list,
.clean-list,
.detail-list {
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
}
.pill-list li,
.clean-list li,
.detail-list li {
  display: flex;
  gap: 0.72rem;
  align-items: flex-start;
  color: var(--muted-strong);
}
.pill-list li::before,
.clean-list li::before,
.detail-list li::before {
  content: "";
  width: 0.52rem;
  height: 0.52rem;
  margin-top: 0.55rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  flex: none;
  box-shadow: 0 0 0 6px var(--accent-soft);
}
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1.4rem;
}
.stat-tile {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.stat-tile strong {
  display: block;
  font-size: 1.12rem;
  margin-bottom: 0.35rem;
}
.spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 1rem;
  align-items: stretch;
}
.band {
  position: relative;
  border-radius: var(--radius-xl);
  padding: clamp(1.5rem, 2vw, 2rem);
  overflow: hidden;
}
.band h2 { font-size: clamp(2rem, 3vw, 3rem); max-width: 18ch; }
.band p { color: var(--muted-strong); max-width: 58ch; }
.crosslink {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.8rem;
  color: var(--accent);
  font-weight: 700;
}
.crosslink::after { content: "→"; }
.tab-shell { display: grid; gap: 1rem; }
.tab-list {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding: 0.45rem;
  border-radius: 1.25rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
}
.tab-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted-strong);
  padding: 0.75rem 1rem;
  border-radius: 1rem;
  font-weight: 700;
  cursor: pointer;
}
.tab-button[aria-selected="true"] {
  background: rgba(255,255,255,0.08);
  color: var(--text);
}
.tab-panel {
  border-radius: var(--radius-lg);
  padding: 1.35rem;
}
.tab-panel[hidden] { display: none; }
.calc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 1rem;
}
.range-list,
.select-list { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.5rem; }
.field label {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted-strong);
  font-weight: 600;
}
.field output {
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}
input[type="range"] {
  width: 100%;
  accent-color: var(--accent-strong);
}
select {
  width: 100%;
  padding: 0.9rem 1rem;
  border-radius: 1rem;
  border: 1px solid rgba(255,255,255,0.12);
  color: var(--text);
  background: rgba(255,255,255,0.04);
}
.result-card { border-radius: var(--radius-lg); padding: 1.25rem; }
.result-score {
  font-size: clamp(2rem, 4vw, 3.7rem);
  line-height: 1;
  letter-spacing: -0.05em;
  margin: 0.4rem 0 0.65rem;
}
.result-band {
  display: inline-flex;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.08);
}
.result-band.low { color: #8ce7ad; }
.result-band.medium { color: #ffe793; }
.result-band.high { color: #ffca84; }
.result-band.critical { color: #ff9ba6; }
.state-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}
.state-card {
  padding: 1rem;
  border-radius: 1.2rem;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
}
.state-card strong { display: block; margin-bottom: 0.35rem; }
.step-list { display: grid; gap: 0.85rem; }
.step-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
}
.step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
}
.quote-line {
  margin-top: 0.95rem;
  padding-left: 1rem;
  border-left: 2px solid rgba(255,255,255,0.12);
  color: var(--muted-strong);
}
.faq { display: grid; gap: 0.85rem; }
.faq-item {
  border-radius: 1.3rem;
  overflow: hidden;
}
.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.05rem 1.15rem;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}
.faq-trigger span { color: var(--muted-strong); font-size: 0.95rem; }
.faq-icon {
  flex: none;
  transition: transform 0.2s ease;
}
.faq-panel {
  padding: 0 1.15rem 1.15rem;
  color: var(--muted-strong);
}
.faq-panel[hidden] { display: none; }
.faq-item.is-open .faq-icon { transform: rotate(45deg); }
.copy-row {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}
.copy-chip {
  flex: 1 1 220px;
  min-height: 2.9rem;
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.09);
  background: rgba(255,255,255,0.04);
  color: var(--muted-strong);
  font-family: var(--font-mono);
  font-size: 0.92rem;
}
.inline-note {
  margin-top: 0.9rem;
  padding: 0.95rem 1rem;
  border-radius: 1.2rem;
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--muted-strong);
}
.footer { padding: 2.5rem 0 3.5rem; }
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.footer-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}
.footer-links strong,
.footer-meta strong { display: block; margin-bottom: 0.45rem; }
.footer-meta,
.footer-links a { color: var(--muted-strong); }
.footer-links a:hover { color: var(--text); }
.kbd {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.2rem 0.4rem;
  border-radius: 0.45rem;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1080px) {
  .hero-grid,
  .spotlight,
  .calc-grid,
  .footer-grid,
  .story-grid.cols-2,
  .detail-grid.cols-2,
  .contact-grid.cols-2,
  .routing-grid.cols-2,
  .metric-grid.cols-3,
  .card-grid.cols-3,
  .story-grid.cols-3,
  .support-grid.cols-3,
  .card-grid.cols-4,
  .support-grid.cols-4,
  .state-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .nav-shell { grid-template-columns: auto auto; }
  .site-nav {
    position: absolute;
    left: 1rem;
    right: 1rem;
    top: calc(100% + 0.75rem);
    display: none;
    flex-direction: column;
    align-items: stretch;
    border-radius: 1.35rem;
    background: rgba(8, 14, 24, 0.96);
    box-shadow: var(--shadow);
  }
  .site-header.is-open .site-nav { display: flex; }
  .site-nav a { border-radius: 1rem; }
  .header-actions .header-mini-link,
  .header-actions .button,
  .header-actions .button-ghost,
  .header-actions .button-secondary,
  .header-actions .button-primary { display: none; }
  .menu-button { display: inline-flex; }
}

@media (max-width: 700px) {
  .hero,
  .page-hero { padding-top: 2.4rem; }
  .container { width: min(100% - 1.2rem, var(--container)); }
  .button-row,
  .copy-row { flex-direction: column; align-items: stretch; }
  .copy-chip { width: 100%; }
  .stat-row { grid-template-columns: 1fr; }
  .tab-list { display: grid; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}