:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --text: #14171a;
  --text-muted: #5c6570;
  --border: #dde2e6;
  --border-strong: #b9c1c8;
  --accent: #047857;
  --accent-strong: #036049;
  --accent-soft: #e1f5ec;
  --fill: #047857;
  --cta-bg: #0c1f18;
  --cta-text: #eafbf3;
  --grid-line: rgba(4, 120, 87, 0.06);
  --radius: 3px;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --shadow: 0 12px 32px rgba(20, 23, 26, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0e11;
    --surface: #18191c;
    --text: #f7f8fa;
    --text-muted: #8b949e;
    --border: #3a3f47;
    --border-strong: #4a515a;
    --accent: #34d399;
    --accent-strong: #6ee7b7;
    --accent-soft: #12241c;
    --fill: #059669;
    --cta-bg: #08130f;
    --cta-text: #eafbf3;
    --grid-line: rgba(52, 211, 153, 0.06);
    --shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--text);
  line-height: 1.55;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 12px; }
p { margin: 0 0 12px; color: var(--text-muted); }

h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin-bottom: 44px;
}
.section-index {
  color: var(--accent);
  margin-right: 12px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 13px 22px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.12s ease, border-color 0.12s ease, background 0.12s ease;
}
.btn-primary { background: var(--fill); color: #fff; }
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-small { padding: 9px 16px; font-size: 0.75rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 16px 0; }
.logo {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
}
.logo span { color: var(--accent); }
.logo-small { font-size: 1rem; }
.nav-links { display: flex; gap: 30px; }
.nav-links a {
  display: flex;
  align-items: baseline;
  gap: 6px;
  text-decoration: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.nav-links a:hover { color: var(--text); }
.nav-index { color: var(--accent); font-size: 0.72rem; }

/* Status line / dot */
.status-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 22px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
  flex-shrink: 0;
}
.status-line-light { color: var(--cta-text); }
.status-line-light .status-dot { background: var(--accent-strong); }

/* Hero */
.hero { padding: 72px 0 60px; }
.hero-inner { max-width: 640px; }
.hero h1 {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 7vw, 4.4rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  color: var(--text);
}
.cursor {
  display: inline-block;
  width: 0.5em;
  height: 0.78em;
  background: var(--accent);
  margin-left: 4px;
  vertical-align: baseline;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero-sub { font-size: 1.1rem; max-width: 520px; margin: 20px 0 30px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-visual { max-width: 1120px; margin: 60px auto 0; padding: 0 24px; }
.hud-panel {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 30px;
  max-width: 460px;
}
.hud-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--accent);
}
.hud-corner-tl { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.hud-corner-tr { top: -1px; right: -1px; border-left: none; border-bottom: none; }
.hud-corner-bl { bottom: -1px; left: -1px; border-right: none; border-top: none; }
.hud-corner-br { bottom: -1px; right: -1px; border-left: none; border-top: none; }

.hud-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.hud-amount {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 26px;
}
.hud-status {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  margin-left: 10px;
  vertical-align: middle;
}
.hud-bars { display: flex; align-items: flex-end; gap: 18px; height: 90px; }
.hud-bar-item { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; flex: 1; }
.hud-bar-item span { display: block; width: 100%; background: var(--accent-soft); border-top: 2px solid var(--accent); }
.hud-bar-item label { margin-top: 10px; font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.04em; color: var(--text-muted); }

/* Log / positioning */
.log { padding: 60px 0 70px; }
.log-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.log-entry { background: var(--bg); padding: 28px; }
.log-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 12px;
}
.log-entry h3 { font-size: 1rem; }
.log-entry p { font-size: 0.9rem; margin: 0; }
.log-entry-highlight { background: var(--accent-soft); }
.log-entry-highlight .log-index { color: var(--accent-strong); }

/* Features / flight path */
.features { padding: 70px 0; }
.flight-path { position: relative; }
.flight-rail {
  position: absolute;
  top: 5px;
  left: 60px;
  right: 60px;
  border-top: 2px dashed var(--border-strong);
}
.flight-path { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.flight-node {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 30px 26px 26px;
}
.flight-node-highlight { border-color: var(--accent); background: var(--accent-soft); }
.flight-marker {
  display: block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  margin: -46px auto 20px;
  position: relative;
  z-index: 1;
}
.pillar-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  border: 1px solid var(--accent);
  padding: 3px 9px;
  margin-bottom: 16px;
}
.flight-node-highlight .pillar-tag { background: var(--surface); }
.pillar-icon { width: 26px; height: 26px; color: var(--accent); margin-bottom: 12px; }
.pillar-icon svg { width: 100%; height: 100%; }
.flight-node h3 { font-size: 1.15rem; }
.pillar-lead { font-weight: 600; color: var(--text); margin-bottom: 14px; font-family: var(--font-sans); }
.pillar-points { margin: 0; padding-left: 18px; }
.pillar-points li { font-size: 0.87rem; color: var(--text-muted); margin-bottom: 8px; }
.pillar-points li:last-child { margin-bottom: 0; }

/* Trust / diagnostics */
.trust { padding: 20px 0 70px; }
.diagnostics { border: 1px solid var(--border); }
.diagnostic-row {
  display: flex;
  gap: 18px;
  padding: 24px 26px;
  border-bottom: 1px solid var(--border);
}
.diagnostic-row:last-child { border-bottom: none; }
.diagnostic-check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--accent);
  margin-top: 2px;
}
.diagnostic-check svg { width: 100%; height: 100%; }
.diagnostic-row h3 { font-size: 1rem; }
.diagnostic-row p { font-size: 0.9rem; margin: 0; }

/* How it works / timeline */
.how-it-works { padding: 20px 0 76px; }
.timeline { position: relative; max-width: 640px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 21px;
  top: 8px;
  bottom: 8px;
  border-left: 2px dashed var(--border-strong);
}
.timeline-step { position: relative; display: flex; gap: 22px; padding-bottom: 34px; }
.timeline-step:last-child { padding-bottom: 0; }
.timeline-marker {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--surface);
  border: 1px solid var(--accent);
  color: var(--accent);
}
.timeline-step h3 { font-size: 1.05rem; margin-bottom: 4px; }
.timeline-step p { font-size: 0.9rem; margin: 0; }

/* Waitlist */
.waitlist {
  padding: 76px 0;
  background: var(--cta-bg);
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--cta-text);
}
.waitlist-inner { text-align: left; max-width: 520px; }
.waitlist h2 { color: var(--cta-text); }
.waitlist > .container > p { color: color-mix(in srgb, var(--cta-text) 75%, transparent); margin-bottom: 28px; }
.waitlist-form {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.16);
  padding: 6px 6px 6px 16px;
}
.waitlist-form .prompt { font-family: var(--font-mono); color: var(--accent-strong); }
.waitlist-form input {
  flex: 1;
  min-width: 180px;
  padding: 12px 4px;
  border: none;
  background: transparent;
  color: var(--cta-text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
}
.waitlist-form input::placeholder { color: color-mix(in srgb, var(--cta-text) 45%, transparent); }
.waitlist-status { margin-top: 16px; font-family: var(--font-mono); font-size: 0.85rem; min-height: 1.2em; color: var(--accent-strong); }

/* Footer */
.site-footer { padding: 26px 0; border-top: 1px solid var(--border); }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.footer-status { display: flex; align-items: center; gap: 8px; }
.footer-status .status-dot { width: 6px; height: 6px; }

@media (max-width: 760px) {
  .nav-links { display: none; }
  .flight-path { grid-template-columns: 1fr; }
  .flight-rail { display: none; }
  .flight-marker { margin-top: 0; }
  .log-grid { grid-template-columns: 1fr; }
}