:root {
  --bg: #08080c;
  --bg-soft: #0e0e16;
  --panel: #12121d;
  --panel-2: #161624;
  --border: #23233a;
  --text: #e9e9f3;
  --muted: #9b9bb4;
  --faint: #6c6c85;
  --brand: #6366f1;
  --brand-2: #8b5cf6;
  --accent: #22d3ee;
  --warn: #f5a623;
  --radius: 16px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

code, .mono { font-family: 'JetBrains Mono', ui-monospace, monospace; }

a { color: inherit; text-decoration: none; }

/* Backgrounds */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(to right, rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}
.bg-glow {
  position: fixed; top: -25%; left: 50%; transform: translateX(-50%);
  width: 900px; height: 700px; z-index: -1;
  background: radial-gradient(circle at center, rgba(99,102,241,0.22), transparent 60%);
  filter: blur(40px); pointer-events: none;
}

/* Nav */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--maxw); margin: 0 auto; padding: 22px 24px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; }
.brand-mark {
  font-family: 'JetBrains Mono', monospace; font-weight: 700;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  color: #fff; padding: 4px 8px; border-radius: 8px; font-size: 14px;
}
.brand-name { font-size: 17px; letter-spacing: -0.01em; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--muted); font-size: 14.5px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 20px; border-radius: 10px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; transition: transform .12s, background .15s, border-color .15s;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff;
  box-shadow: 0 8px 24px -8px rgba(99,102,241,0.6);
}
.btn-ghost { background: rgba(255,255,255,0.03); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: rgba(255,255,255,0.07); }

/* Hero */
.hero { max-width: 860px; margin: 0 auto; padding: 70px 24px 40px; text-align: center; }
.pill {
  display: inline-block; font-family: 'JetBrains Mono', monospace; font-size: 12.5px;
  color: var(--accent); border: 1px solid rgba(34,211,238,0.3); background: rgba(34,211,238,0.06);
  padding: 6px 14px; border-radius: 999px; letter-spacing: 0.02em; margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(36px, 6.5vw, 64px); line-height: 1.05; font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #fff 30%, #b9b9d6 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { color: var(--muted); font-size: clamp(16px, 2vw, 19px); margin: 26px auto 0; max-width: 660px; }
.lede strong { color: var(--text); }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 34px; }

/* Terminal */
.terminal {
  margin: 56px auto 0; max-width: 720px; text-align: left;
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  overflow: hidden; box-shadow: 0 30px 70px -30px rgba(0,0,0,0.8);
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px; padding: 12px 16px;
  background: var(--panel-2); border-bottom: 1px solid var(--border);
}
.dot { width: 11px; height: 11px; border-radius: 50%; background: #2f2f44; }
.dot:nth-child(1) { background: #ff5f57; } .dot:nth-child(2) { background: #febc2e; } .dot:nth-child(3) { background: #28c840; }
.terminal-title { margin-left: 10px; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--faint); }
.terminal-body { padding: 20px 22px; font-family: 'JetBrains Mono', monospace; font-size: 13.5px; line-height: 1.7; }
.terminal-body p { margin-bottom: 12px; }
.terminal-body p:last-child { margin-bottom: 0; }
.prompt { color: var(--accent); font-weight: 600; }
.tool { color: var(--faint); }
.tool-tag { color: var(--brand-2); }
.answer { color: var(--text); }
.answer-tag { color: var(--brand); font-weight: 600; }
.answer strong { color: #fff; }
.cite { color: var(--accent); font-size: 12px; }
.cite.uncertain { color: var(--warn); }

/* Band */
.band { padding: 80px 24px; }
.band-inner { max-width: 820px; margin: 0 auto; text-align: center; }
.kicker {
  font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--brand);
  text-transform: uppercase; letter-spacing: 0.12em; font-weight: 600; margin-bottom: 18px;
}
.band-statement { font-size: clamp(22px, 3.4vw, 32px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.35; }
.band-statement em { font-style: normal; color: var(--brand-2); }

/* Sections */
section { scroll-margin-top: 40px; }
.section-title { text-align: center; font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: -0.025em; }
.section-sub { text-align: center; color: var(--muted); margin: 12px auto 0; max-width: 560px; font-size: 16.5px; }

/* Halves */
.halves { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 70px; }
.halves-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 44px; }
.half {
  background: linear-gradient(180deg, var(--panel), var(--bg-soft));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 30px;
}
.half-head { display: flex; align-items: baseline; gap: 14px; }
.half-num { font-family: 'JetBrains Mono', monospace; color: var(--brand); font-size: 22px; font-weight: 700; }
.half-head h3 { font-size: 24px; letter-spacing: -0.02em; }
.half-tag { font-family: 'JetBrains Mono', monospace; font-size: 12.5px; color: var(--accent); margin: 6px 0 16px; }
.half p { color: var(--muted); margin-bottom: 14px; }
.half code { background: rgba(99,102,241,0.12); color: #c7c7ff; padding: 2px 6px; border-radius: 5px; font-size: 13px; }
.half-foot { color: var(--text) !important; font-size: 14.5px; padding-top: 6px; border-top: 1px dashed var(--border); }
.half-foot strong { color: var(--brand-2); }

/* Features */
.features { max-width: var(--maxw); margin: 0 auto; padding: 70px 24px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 46px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: transform .15s, border-color .15s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(99,102,241,0.5); }
.card-icon {
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 11px;
  background: rgba(99,102,241,0.12); color: var(--brand); font-size: 22px; margin-bottom: 18px;
}
.card h3 { font-size: 18px; letter-spacing: -0.01em; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14.5px; }

/* Oracle */
.oracle { max-width: var(--maxw); margin: 0 auto; padding: 40px 24px 70px; }
.oracle-inner {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: center;
  background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.04));
  border: 1px solid var(--border); border-radius: 24px; padding: 48px;
}
.oracle-copy h3 { font-size: clamp(24px, 3.2vw, 32px); letter-spacing: -0.025em; margin-bottom: 16px; }
.oracle-copy p { color: var(--muted); margin-bottom: 22px; }
.check-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.check-list li { position: relative; padding-left: 28px; color: var(--text); font-size: 15px; }
.check-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--accent); font-weight: 700;
}
.check-list code { font-family: 'JetBrains Mono', monospace; color: #c7c7ff; background: rgba(99,102,241,0.12); padding: 1px 6px; border-radius: 5px; font-size: 13px; }
.oracle-tools { display: grid; gap: 12px; }
.tool-card {
  display: flex; flex-direction: column; gap: 3px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px;
}
.tool-card.muted { opacity: 0.65; }
.tool-name { font-family: 'JetBrains Mono', monospace; font-weight: 600; color: var(--brand-2); font-size: 15px; }
.tool-desc { color: var(--faint); font-size: 13px; }

/* Steps */
.steps { max-width: var(--maxw); margin: 0 auto; padding: 70px 24px; }
.step-row { display: flex; align-items: stretch; gap: 14px; margin-top: 46px; flex-wrap: wrap; justify-content: center; }
.step { flex: 1; min-width: 180px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.step-n {
  display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 700; margin-bottom: 14px;
}
.step h4 { font-size: 17px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; }
.step-arrow { display: grid; place-items: center; color: var(--faint); font-size: 22px; }

/* CTA */
.cta { padding: 50px 24px 90px; }
.cta-card {
  max-width: 720px; margin: 0 auto; text-align: center;
  background: linear-gradient(135deg, rgba(99,102,241,0.14), rgba(139,92,246,0.06));
  border: 1px solid rgba(99,102,241,0.3); border-radius: 24px; padding: 56px 40px;
}
.cta-card h2 { font-size: clamp(28px, 4.5vw, 42px); font-weight: 800; letter-spacing: -0.03em; }
.cta-card p { color: var(--muted); margin: 14px auto 0; max-width: 460px; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: 30px 24px; }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto; display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}
.footer-note { color: var(--muted); font-size: 14px; }
.footer-copy { color: var(--faint); font-size: 13px; }

/* Responsive */
@media (max-width: 860px) {
  .nav-links a:not(.btn) { display: none; }
  .halves-grid, .feature-grid, .oracle-inner { grid-template-columns: 1fr; }
  .oracle-inner { padding: 32px; gap: 32px; }
  .step-arrow { transform: rotate(90deg); }
}