:root{
  --bg:#0b1020;
  --panel:#11182d;
  --panel2:#151e36;
  --text:#eef3ff;
  --muted:#a9b4cc;
  --line:rgba(255,255,255,.10);
  --orange:#ff8a3d;
  --pink:#ff6b9e;
  --blue:#6fb6ff;
  --green:#77e0ad;
  --yellow:#ffd36a;
  --max:1180px;
  --radius:22px;
  --shadow:0 24px 70px rgba(0,0,0,.28);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at 15% 5%, rgba(111,182,255,.15), transparent 28rem),
    radial-gradient(circle at 90% 15%, rgba(255,107,158,.10), transparent 28rem),
    var(--bg);
  line-height:1.6;
}

a{color:inherit}
.progress{position:fixed;top:0;left:0;width:100%;height:3px;z-index:100;background:rgba(255,255,255,.05)}
.progress div{height:100%;width:0;background:linear-gradient(90deg,var(--orange),var(--pink),var(--blue))}

.site-header{
  position:sticky;top:3px;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  max-width:var(--max);margin:0 auto;padding:18px 22px;
  backdrop-filter:blur(18px);
  background:rgba(11,16,32,.72);
  border-bottom:1px solid var(--line);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:750;letter-spacing:-.02em}
.brand-mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,var(--orange),var(--pink));
  color:#111;font-weight:900;
}
.nav{display:flex;gap:20px}
.nav a{font-size:.94rem;color:var(--muted);text-decoration:none}
.nav a:hover{color:var(--text)}

.section{max-width:var(--max);margin:0 auto;padding:104px 24px}
.narrow{max-width:820px}
.hero{padding-top:120px}
.eyebrow,.section-kicker{
  display:inline-block;
  font-size:.78rem;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.16em;
  color:var(--orange);
  margin-bottom:16px;
}
h1,h2,h3,p{margin-top:0}
h1{
  max-width:1050px;
  font-size:clamp(3rem,7vw,6.8rem);
  line-height:.94;
  letter-spacing:-.065em;
  margin-bottom:30px;
}
h2{
  font-size:clamp(2.2rem,4.5vw,4.4rem);
  line-height:1.02;
  letter-spacing:-.045em;
  margin-bottom:24px;
}
h3{font-size:1.22rem;line-height:1.25;letter-spacing:-.02em}
.lede,.section-intro{
  max-width:850px;color:var(--muted);font-size:1.18rem
}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:38px 0 54px}
.button{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:48px;padding:0 18px;border-radius:14px;text-decoration:none;font-weight:750;
  border:1px solid var(--line)
}
.button.primary{background:linear-gradient(135deg,var(--orange),#ffb067);color:#151515;border:0}
.button.ghost{background:rgba(255,255,255,.04)}
.hero-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.stat-card,.evidence-card,.series-grid article,.three-col article{
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.025));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow)
}
.accent-card{border-color:rgba(255,138,61,.35)}
.stat-label,.evidence-level{
  display:inline-block;margin-bottom:16px;font-size:.75rem;font-weight:850;text-transform:uppercase;letter-spacing:.13em;color:var(--green)
}
.stat-card strong{display:block;font-size:1.35rem;margin-bottom:10px}
.stat-card p,.evidence-card p,.series-grid p,.three-col p{color:var(--muted);margin-bottom:0}

blockquote{
  margin:34px 0;padding:24px 28px;
  border-left:4px solid var(--orange);
  background:rgba(255,255,255,.035);
  border-radius:0 18px 18px 0;
  font-size:1.45rem;line-height:1.35;font-weight:650
}

.model-grid{display:grid;grid-template-columns:1fr .65fr 1fr;gap:18px;margin:44px 0}
.model-column,.model-center{
  min-height:360px;border-radius:var(--radius);padding:26px;border:1px solid var(--line)
}
.model-column{background:var(--panel)}
.model-column.approach{box-shadow:inset 0 0 0 1px rgba(119,224,173,.08)}
.model-column.avoidance{box-shadow:inset 0 0 0 1px rgba(255,107,158,.08)}
.model-column ul{margin:18px 0 0;padding-left:20px;color:var(--muted)}
.model-column li{padding:5px 0}
.model-center{display:grid;place-items:center;background:linear-gradient(180deg,rgba(255,138,61,.08),rgba(111,182,255,.05))}
.threshold-card{text-align:center}
.threshold-card span{display:block;color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.12em}
.threshold-card strong{display:block;font-size:2rem;margin:8px 0;color:var(--pink)}
.threshold-card small{display:block;color:var(--muted);line-height:1.5}
.arrow-stack{display:none}

.loop-card{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}
.loop-step{
  display:flex;gap:14px;padding:20px;background:rgba(255,255,255,.035);
  border:1px solid var(--line);border-radius:18px
}
.loop-step>span{
  flex:0 0 auto;display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:rgba(255,138,61,.14);color:var(--orange);font-weight:850
}
.loop-step p{color:var(--muted);margin:5px 0 0}

.simulator-section{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.simulator-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;margin-top:42px}
.controls,.sim-output{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:26px
}
.controls label{display:block;margin-bottom:22px}
.controls label span{display:flex;justify-content:space-between;gap:10px;margin-bottom:9px;font-size:.92rem}
.controls b{color:var(--orange)}
input[type=range]{width:100%;accent-color:var(--orange)}
.preset-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.preset-row button{
  appearance:none;border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text);
  border-radius:12px;padding:11px 13px;cursor:pointer;min-height:44px
}
.preset-row button:focus-visible,.button:focus-visible,a:focus-visible{outline:2px solid var(--orange);outline-offset:2px}
.preset-row button:hover{background:rgba(255,255,255,.08)}
.preset-hint{margin:8px 0 0;font-size:.85rem;color:var(--muted);font-style:italic}

.meter-group{margin-bottom:22px}
.meter-label{display:flex;justify-content:space-between;margin-bottom:8px}
.meter{height:12px;background:rgba(255,255,255,.07);border-radius:999px;overflow:hidden}
.meter-fill{height:100%;width:0;border-radius:999px;transition:width .25s ease}
#approachBar{background:linear-gradient(90deg,var(--green),var(--blue))}
#avoidanceBar{background:linear-gradient(90deg,var(--yellow),var(--pink))}
.state-card{
  padding:24px;margin:28px 0 20px;border-radius:18px;
  background:rgba(255,255,255,.04);border:1px solid var(--line)
}
.state-card span{display:block;color:var(--muted);font-size:.76rem;text-transform:uppercase;letter-spacing:.12em}
.state-card strong{display:block;font-size:1.75rem;margin:8px 0}
.state-card p{color:var(--muted);margin-bottom:0}
canvas{display:block;width:100%;height:auto;background:#0a0f1d;border:1px solid var(--line);border-radius:18px}
.caption{font-size:.82rem;color:var(--muted);margin:10px 0 0}

.evidence-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
.evidence-card.strong .evidence-level{color:var(--green)}
.evidence-card.moderate .evidence-level{color:var(--blue)}
.evidence-card.emerging .evidence-level{color:var(--yellow)}
.evidence-card.hypothesis{border-color:rgba(255,138,61,.35)}
.evidence-card.hypothesis .evidence-level{color:var(--orange)}
.evidence-card.prior-art{border-color:rgba(169,180,204,.25);grid-column:1/-1;background:linear-gradient(0deg,rgba(255,255,255,.02),transparent)}
.evidence-card.prior-art .evidence-level{color:var(--muted)}

.split-section{display:grid;grid-template-columns:1.2fr .8fr;gap:42px;align-items:center}
.before-after{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:28px}
.before-after>div{padding:20px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.035)}
.before-after span{font-size:.78rem;color:var(--orange);font-weight:800;letter-spacing:.12em}
.before-after strong{display:block;font-size:1.25rem;margin:8px 0}
.before-after p{color:var(--muted);margin-bottom:0}
.quote-panel{
  padding:38px;border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(255,138,61,.16),rgba(255,107,158,.10),rgba(111,182,255,.10));
  border:1px solid rgba(255,255,255,.12)
}
.quote-panel p{font-size:1.45rem;margin:6px 0;color:var(--muted)}
.quote-panel strong{display:block;font-size:2.1rem;margin-top:18px}

.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:34px}
.caution,.boundary-box{
  margin-top:22px;padding:22px 24px;border-radius:18px;
  background:rgba(255,211,106,.08);border:1px solid rgba(255,211,106,.24);color:#f7e6aa
}
.boundary-box{background:rgba(255,255,255,.035);border-color:var(--line);color:var(--text)}
.boundary-box p{color:var(--muted)}
.boundary-box p:last-child{margin-bottom:0}

.prediction-list{display:grid;gap:12px;margin-top:36px}
.prediction-list article{
  display:grid;grid-template-columns:64px 1fr;gap:18px;
  padding:22px;border:1px solid var(--line);border-radius:18px;background:rgba(255,255,255,.03)
}
.prediction-list article>span{font-weight:900;color:var(--orange);font-size:1.5rem}
.prediction-list h3{margin-bottom:7px}
.prediction-list p{color:var(--muted);margin-bottom:0}

.series-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:38px}
.series-grid span{font-size:.8rem;color:var(--orange);font-weight:850;letter-spacing:.12em}
.series-grid h3{margin:12px 0 8px}

.source-list{display:grid;gap:10px;margin-top:32px}
.source-list a{
  display:grid;grid-template-columns:240px 1fr;gap:20px;
  padding:18px 20px;border:1px solid var(--line);border-radius:16px;
  text-decoration:none;background:rgba(255,255,255,.025)
}
.source-list a:hover{background:rgba(255,255,255,.05);border-color:rgba(255,138,61,.35)}
.source-list span{color:var(--muted)}

.final-cta{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
  border-top:1px solid var(--line)
}
.final-cta>div{max-width:820px}

footer{
  max-width:var(--max);margin:0 auto;padding:42px 24px 60px;
  border-top:1px solid var(--line);color:var(--muted);font-size:.9rem
}
footer p{margin:4px 0}

@media (max-width: 900px){
  .nav{display:none}
  .hero-grid,.evidence-grid,.three-col{grid-template-columns:1fr}
  .model-grid{grid-template-columns:1fr}
  .model-center{min-height:200px}
  .loop-card{grid-template-columns:1fr 1fr}
  .simulator-layout,.split-section{grid-template-columns:1fr}
  .series-grid{grid-template-columns:1fr 1fr}
  .source-list a{grid-template-columns:1fr}
  .final-cta{display:block}
  .final-cta .button{margin-top:20px}
}

@media (max-width: 600px){
  .section{padding:74px 18px}
  .hero{padding-top:86px}
  h1{font-size:clamp(2.7rem,14vw,4.4rem)}
  h2{font-size:clamp(2rem,10vw,3.2rem)}
  .loop-card,.before-after,.series-grid{grid-template-columns:1fr}
  .site-header{padding:14px 16px}
  .brand span:last-child{font-size:.88rem}
  .prediction-list article{grid-template-columns:1fr}
  .quote-panel p{font-size:1.2rem}
  .quote-panel strong{font-size:1.7rem}
}