:root {
  --bg: #0b0f14;
  --surface: #111823;
  --surface-2: #16202e;
  --border: #212c3b;
  --border-strong: #2e3d52;
  --text: #d7e1ec;
  --text-strong: #f2f7fc;
  --text-soft: #b7c3d3;
  --muted: #97a6b8;
  --accent: #5eead4;
  --accent-strong: #83f2e0;
  --accent-ink: #052e2b;
  --warn: #f3a4b0;
  --radius: 10px;
  --radius-lg: 14px;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(94, 234, 212, 0.28); }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

.container {
  width: min(100% - 2.5rem, 1080px);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 20, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding-block: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-right: auto;
  color: var(--text-strong);
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: 0.01em;
}
.brand:hover { color: var(--text-strong); }
.brand-mark { color: var(--accent); flex-shrink: 0; }

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--text-strong); background: var(--surface); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.2;
  padding: 0.7rem 1.2rem;
  border-radius: 9px;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-strong); color: var(--accent-ink); }
.btn-ghost { border-color: var(--border-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 0.45rem 0.85rem; font-size: 0.9rem; }

.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3.5rem, 9vw, 6.5rem) clamp(3rem, 7vw, 5rem);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: radial-gradient(ellipse 90% 85% at 50% 0%, #000 25%, transparent 72%);
  mask-image: radial-gradient(ellipse 90% 85% at 50% 0%, #000 25%, transparent 72%);
  pointer-events: none;
}
.hero .container { position: relative; }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}

h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.35rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text-strong);
  margin: 0 0 1.25rem;
  max-width: 18ch;
}

.lead {
  font-size: clamp(1.02rem, 1.6vw, 1.16rem);
  line-height: 1.65;
  color: var(--text-soft);
  margin: 0;
  max-width: 62ch;
}

.install {
  margin-top: 2.25rem;
  max-width: 640px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.install-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.5rem 0.6rem 0.5rem 1rem;
  border-bottom: 1px solid var(--border);
}
.install-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.copy-btn {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.copy-btn:hover, .copy-btn:focus-visible { color: var(--accent); border-color: var(--accent); }
.install-body {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1rem;
  overflow-x: auto;
}
.prompt { font-family: var(--mono); color: var(--accent); flex-shrink: 0; }
.install-body code {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--text-strong);
  white-space: nowrap;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.75rem 0 0;
}

.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.3rem 0.8rem;
}

.section {
  scroll-margin-top: 4.75rem;
  padding-block: clamp(3.25rem, 8vw, 5.5rem);
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 62ch;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}
.section-head .eyebrow { margin-bottom: 0.9rem; }

h2 {
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--text-strong);
  margin: 0 0 1rem;
}

.section-lead {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text-soft);
  margin: 0;
}

.compare {
  display: grid;
  gap: 1rem;
}
.compare-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
}
.compare-card.sim { border-color: rgba(94, 234, 212, 0.45); }
.compare-card h3 {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 1.05rem;
  color: var(--text-strong);
  margin: 0 0 1.1rem;
}
.compare-card.sim h3 { color: var(--accent); }
.compare-tag {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 400;
}
.compare-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}
.compare-card li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--text-soft);
  line-height: 1.55;
}
.compare-card li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--muted);
}
.compare-card.sim li::before { content: "→"; color: var(--accent); }

.chips-label {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 1.9rem 0 0.6rem;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
}

.ladder {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}
.ladder-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.ladder-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.9rem;
}
.tick-level {
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent);
}
.tick-interval {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}
.ladder-card dl {
  margin: 0;
  display: grid;
  gap: 0.7rem;
}
.ladder-card dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.15rem;
}
.ladder-card dd {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.96rem;
  line-height: 1.5;
}

.invariants {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.6rem;
}
.invariants-title {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.9rem;
}
.invariants ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}
.invariants li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--text-soft);
}
.invariants li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
}

.portal-grid,
.trust-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}
.feature-card,
.trust-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}
.feature-icon {
  display: block;
  color: var(--accent);
  margin-bottom: 1rem;
}
.feature-card h3,
.trust-card h3 {
  font-size: 1.02rem;
  color: var(--text-strong);
  margin: 0 0 0.6rem;
}
.feature-card p,
.trust-card p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.95rem;
  line-height: 1.6;
}

.icode {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--text-strong);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.05em 0.4em;
}

.offer {
  display: grid;
  gap: 1.25rem;
  align-items: start;
}
.price-card {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 1.9rem;
}
.price {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  margin: 0 0 0.75rem;
}
.amount {
  font-family: var(--mono);
  font-size: 2.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-strong);
  letter-spacing: -0.02em;
}
.per {
  font-size: 1.05rem;
  color: var(--muted);
}
.price-note {
  margin: 0 0 1.4rem;
  color: var(--text-soft);
  max-width: 34ch;
}
.seat-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  border: 1px solid rgba(94, 234, 212, 0.5);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  margin: 0 0 0.5rem;
}
.seat-note {
  margin: 0 0 1.6rem;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 34ch;
}
.cta-hint {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.offer-lists {
  display: grid;
  gap: 1.25rem;
}
.offer-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.6rem;
}
.offer-panel h3 {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1rem;
}
.offer-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}
.offer-panel li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-soft);
  line-height: 1.55;
  font-size: 0.96rem;
}
.list-include li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--mono);
}
.list-exclude li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--warn);
  font-family: var(--mono);
}

.faq {
  display: grid;
  gap: 0.75rem;
  max-width: 780px;
}
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-strong);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.25rem;
  color: var(--muted);
  flex-shrink: 0;
}
.faq details[open] summary::after { content: "–"; }
.faq details[open] summary { border-bottom: 1px solid var(--border); }
.faq details p {
  margin: 0;
  padding: 1rem 1.25rem 1.25rem;
  color: var(--text-soft);
  line-height: 1.65;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 3rem 2rem;
}
.footer-grid {
  display: grid;
  gap: 2rem;
}
.footer-tagline {
  margin: 0.9rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  max-width: 30ch;
}
.footer-title {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
}
.footer-grid .footer-title:nth-of-type(n+2) { margin-top: 1.6rem; }
.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}
.footer-links a {
  color: var(--text-soft);
  font-size: 0.95rem;
}
.footer-links a:hover { color: var(--text-strong); }
.footer-install {
  display: block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
  overflow-x: auto;
  white-space: nowrap;
}
.footer-small {
  margin: 2.5rem 0 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.65;
  max-width: 78ch;
}

@media (min-width: 760px) {
  .compare { grid-template-columns: 1fr 1fr; }
  .invariants ul { grid-template-columns: repeat(3, 1fr); gap: 0.6rem 1.5rem; }
  .footer-grid { grid-template-columns: 1.3fr 0.8fr 1.6fr; }
}

@media (min-width: 920px) {
  .offer { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}