*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#020a0d;--surface:#03111a;--surface2:#041620;
  --cyan:#00f0ff;--green:#00ffa3;--amber:#ffc400;--red:#ff2b55;--purple:#c084fc;
  --white:#f0faff;--text:#a8cdd6;--muted:rgba(168,205,214,.4);
  --border:rgba(0,240,255,.1);--border-hi:rgba(0,240,255,.22);
  --glow:0 0 12px rgba(0,240,255,.6),0 0 40px rgba(0,240,255,.2);
  --glow-sm:0 0 8px rgba(0,240,255,.5),0 0 22px rgba(0,240,255,.15);
}
html{scroll-behavior:smooth}
body{font-family:'Exo 2',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden}

/* NAV */
.top-nav{position:sticky;top:0;z-index:200;padding:.85rem 3rem;display:flex;align-items:center;justify-content:space-between;background:rgba(2,10,13,.92);backdrop-filter:blur(28px);border-bottom:1px solid var(--border)}
.nav-back{font-family:'Share Tech Mono',monospace;font-size:.68rem;letter-spacing:.15em;color:var(--cyan);text-decoration:none;display:flex;align-items:center;gap:.5rem;opacity:.8;transition:opacity .2s}
.nav-back:hover{opacity:1}
.nav-id{font-family:'Share Tech Mono',monospace;font-size:.6rem;color:var(--muted);letter-spacing:.1em}
.nav-pill{font-family:'Share Tech Mono',monospace;font-size:.58rem;letter-spacing:.14em;padding:.22rem .75rem;border-radius:20px;color:var(--green);border:1px solid rgba(0,255,163,.2);background:rgba(0,255,163,.04)}

/* ── HERO ── */
.vis-hero{position:relative;height:88vh;min-height:520px;display:flex;align-items:flex-end;overflow:hidden}
.vh-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;filter:brightness(.38) saturate(1.1)}
.vh-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(2,10,13,1) 0%,rgba(2,10,13,.6) 40%,rgba(2,10,13,.1) 100%)}
.vh-side{position:absolute;inset:0;background:linear-gradient(to right,rgba(2,10,13,.8) 0%,transparent 60%)}
.vh-content{position:relative;z-index:2;padding:4rem 3rem;max-width:960px;width:100%}
.vh-tag{display:inline-flex;align-items:center;gap:.6rem;margin-bottom:1rem;font-family:'Share Tech Mono',monospace;font-size:.6rem;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);opacity:.7}
.vh-tag::before{content:'';width:16px;height:1px;background:var(--cyan);opacity:.5}
.vh-title{font-family:'Orbitron',monospace;font-size:clamp(2.2rem,5vw,4.5rem);font-weight:900;color:var(--white);line-height:1.05;letter-spacing:.02em;margin-bottom:.9rem}
.vh-title .hl{color:var(--cyan);text-shadow:var(--glow-sm)}
.vh-desc{font-size:1rem;color:rgba(168,205,214,.7);font-weight:300;line-height:1.85;max-width:560px;margin-bottom:2rem;font-style:italic}
.vh-meta{display:flex;gap:2.5rem;flex-wrap:wrap;padding-top:1.5rem;border-top:1px solid rgba(0,240,255,.12)}
.vm-item .vm-l{font-family:'Share Tech Mono',monospace;font-size:.54rem;letter-spacing:.2em;text-transform:uppercase;color:var(--muted);margin-bottom:.2rem}
.vm-item .vm-v{font-family:'Share Tech Mono',monospace;font-size:.74rem;color:var(--cyan);letter-spacing:.06em}

/* ── BODY ── */
.paper-body{max-width:1080px;margin:0 auto;padding:4rem 3rem}

/* SECTION HEADER */
.sec{margin-bottom:4rem}
.sec-hd{display:flex;align-items:center;gap:.8rem;margin-bottom:2rem}
.sec-num{font-family:'Orbitron',monospace;font-size:.72rem;font-weight:700;color:rgba(0,240,255,.3);letter-spacing:.1em}
.sec-title{font-family:'Orbitron',monospace;font-size:1.25rem;font-weight:700;color:var(--white);letter-spacing:.04em}
.sec-line{flex:1;height:1px;background:linear-gradient(90deg,rgba(0,240,255,.2),transparent)}

/* TEXT */
.para{font-size:.93rem;color:rgba(168,205,214,.65);line-height:1.95;margin-bottom:1.1rem;font-weight:300}
.para strong{color:rgba(0,240,255,.75);font-weight:400}

/* ── VISUAL CONCEPT CARD ── */
.vis-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.6rem;margin:1.8rem 0}
.vis-card{background:var(--surface);border:1px solid var(--border);border-radius:6px;overflow:hidden;transition:all .35s}
.vis-card:hover{border-color:var(--border-hi);transform:translateY(-5px);box-shadow:0 20px 50px rgba(0,240,255,.06)}
.vc-img{width:100%;height:190px;object-fit:cover;object-position:center;filter:brightness(.7) saturate(1.2);transition:filter .35s}
.vis-card:hover .vc-img{filter:brightness(.85) saturate(1.3)}
.vc-img-placeholder{width:100%;height:190px;display:flex;align-items:center;justify-content:center;font-size:4rem;background:linear-gradient(135deg,var(--surface2),#01131c)}
.vc-body{padding:1.4rem}
.vc-tag{display:inline-block;margin-bottom:.65rem;font-family:'Share Tech Mono',monospace;font-size:.54rem;letter-spacing:.18em;text-transform:uppercase;padding:.16rem .55rem;border-radius:20px;color:var(--cyan);border:1px solid rgba(0,240,255,.15);background:rgba(0,240,255,.03)}
.vc-body h4{font-family:'Orbitron',monospace;font-size:.85rem;font-weight:700;color:var(--white);margin-bottom:.55rem;letter-spacing:.05em}
.vc-body p{font-size:.8rem;color:var(--muted);line-height:1.85;font-weight:300}
.vc-stat{margin-top:.9rem;padding-top:.9rem;border-top:1px solid var(--border);font-family:'Share Tech Mono',monospace;font-size:.68rem;color:var(--cyan);letter-spacing:.08em}

/* ── FULL WIDTH IMAGE SECTION ── */
.full-img-sec{margin:2.5rem 0;border-radius:6px;overflow:hidden;border:1px solid var(--border);position:relative}
.full-img-sec img{width:100%;max-height:420px;object-fit:cover;object-position:center;filter:brightness(.65) saturate(1.15);display:block}
.fi-caption{padding:1rem 1.5rem;background:rgba(0,8,14,.85);border-top:1px solid var(--border);display:flex;align-items:center;gap:.8rem}
.fi-ico{font-size:.9rem;flex-shrink:0}
.fi-text{font-family:'Share Tech Mono',monospace;font-size:.68rem;color:rgba(168,205,214,.55);letter-spacing:.06em;line-height:1.6}

/* ── DIAGRAM / SVG SECTION ── */
.diagram-wrap{background:var(--surface2);border:1px solid var(--border);border-radius:6px;padding:2rem;margin:1.8rem 0;overflow:hidden}
.diagram-title{font-family:'Share Tech Mono',monospace;font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(0,240,255,.45);margin-bottom:1.4rem}

/* ── TWO COL LAYOUT ── */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin:1.8rem 0;align-items:center}
.two-col.flip{direction:rtl}.two-col.flip>*{direction:ltr}
.col-img{border-radius:6px;overflow:hidden;border:1px solid var(--border)}
.col-img img{width:100%;height:280px;object-fit:cover;filter:brightness(.7) saturate(1.2);display:block}
.col-text h3{font-family:'Orbitron',monospace;font-size:.95rem;font-weight:700;color:var(--white);margin-bottom:.8rem;letter-spacing:.05em}
.col-text p{font-size:.85rem;color:var(--muted);line-height:1.9;font-weight:300}
.col-text p strong{color:rgba(0,240,255,.7);font-weight:400}

/* ── STAT STRIP ── */
.stat-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;background:var(--border);border:1px solid var(--border);border-radius:6px;overflow:hidden;margin:1.8rem 0}
.ss-item{background:var(--surface2);padding:1.4rem 1.2rem;text-align:center}
.ss-val{font-family:'Orbitron',monospace;font-size:1.5rem;font-weight:900;color:var(--cyan);text-shadow:var(--glow-sm);line-height:1}
.ss-key{font-family:'Share Tech Mono',monospace;font-size:.56rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-top:.45rem}

/* ── CALLOUT ── */
.callout{padding:1.4rem 1.6rem;border-radius:4px;margin:1.5rem 0;display:flex;gap:1rem;align-items:flex-start}
.callout.info{background:rgba(0,240,255,.04);border-left:2px solid var(--cyan)}
.callout.warn{background:rgba(255,196,0,.04);border-left:2px solid var(--amber)}
.callout.wow{background:rgba(0,255,163,.04);border-left:2px solid var(--green)}
.callout.q{background:rgba(192,132,252,.04);border-left:2px solid var(--purple)}
.callout-ico{font-size:1.1rem;flex-shrink:0;margin-top:.1rem}
.callout-text{font-size:.86rem;color:rgba(168,205,214,.65);line-height:1.9;font-weight:300}
.callout-text strong{color:rgba(0,240,255,.75);font-weight:400}

/* ── TIMELINE ── */
.timeline{position:relative;margin:1.5rem 0;padding-left:2rem}
.timeline::before{content:'';position:absolute;left:.35rem;top:.4rem;bottom:0;width:1px;background:linear-gradient(180deg,var(--cyan),rgba(0,240,255,.05))}
.tl-item{position:relative;margin-bottom:1.6rem;padding-left:1rem}
.tl-dot{position:absolute;left:-1.7rem;top:.35rem;width:9px;height:9px;border-radius:50%;background:var(--cyan);box-shadow:var(--glow-sm);flex-shrink:0}
.tl-year{font-family:'Share Tech Mono',monospace;font-size:.62rem;color:var(--cyan);letter-spacing:.12em;margin-bottom:.28rem;text-transform:uppercase}
.tl-title{font-family:'Orbitron',monospace;font-size:.8rem;font-weight:700;color:var(--white);margin-bottom:.3rem}
.tl-text{font-size:.83rem;color:rgba(168,205,214,.6);line-height:1.78;font-weight:300}
.tl-text strong{color:rgba(0,240,255,.65);font-weight:400}

/* ── OPEN QUESTIONS ── */
.q-list{display:flex;flex-direction:column;gap:.9rem;margin:1.2rem 0}
.q-item{padding:1.2rem 1.4rem;background:var(--surface);border:1px solid rgba(192,132,252,.12);border-radius:4px;display:flex;gap:1rem}
.q-mark{font-family:'Orbitron',monospace;font-size:1.1rem;color:rgba(192,132,252,.35);flex-shrink:0;font-weight:700}
.q-text{font-size:.85rem;color:rgba(168,205,214,.6);line-height:1.85;font-weight:300}

/* ── RESOURCES ── */
.res-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin:1.2rem 0}
.res-card{background:var(--surface2);border:1px solid var(--border);border-radius:4px;padding:1.1rem;display:flex;gap:.8rem}
.res-ico{font-size:1rem;flex-shrink:0;margin-top:.1rem}
.res-name{font-family:'Orbitron',monospace;font-size:.7rem;font-weight:700;color:var(--white);margin-bottom:.22rem}
.res-type{font-family:'Share Tech Mono',monospace;font-size:.58rem;color:var(--muted);letter-spacing:.07em}

/* ── CODE/EQ BLOCK ── */
.eq{background:#000c14;border:1px solid var(--border);border-radius:4px;padding:1.2rem 1.5rem;font-family:'Share Tech Mono',monospace;font-size:.8rem;color:var(--cyan);letter-spacing:.05em;margin:1.2rem 0;overflow-x:auto;line-height:2}
.eq .cm{color:rgba(0,240,255,.3);font-size:.72rem}

/* FOOTER */
footer{border-top:1px solid var(--border);padding:2rem 3rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}
.ft-brand{font-family:'Orbitron',monospace;font-size:.8rem;font-weight:900;color:var(--cyan);letter-spacing:.22em;text-shadow:var(--glow-sm)}
.ft-note{font-family:'Share Tech Mono',monospace;font-size:.58rem;color:var(--muted);letter-spacing:.1em}

@media(max-width:768px){
  .paper-body{padding:2.5rem 1.2rem}
  .two-col{grid-template-columns:1fr}
  .two-col.flip{direction:ltr}
  .vis-hero{height:65vh}.vh-content{padding:2rem 1.2rem}
  .top-nav{padding:.7rem 1.2rem}
  footer{padding:1.5rem 1.2rem;flex-direction:column;text-align:center}
}