/* ===== Theme: edit colors here ===== */
:root{--bg:#0A0B0E;--text:#F4F4F6;--green:#00FF66;--cyan:#00E5FF;--muted:#9097a6;--glass:rgba(22,25,34,.45);--edge:rgba(255,255,255,.09)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 Inter,system-ui,sans-serif;overflow-x:hidden}
h1,h2,h3{font-family:"Cormorant Garamond",Georgia,serif;font-weight:600}
.brand,.eyebrow,.ticker,pre,input,.tag,.card ul,.nav-cta,.btn{font-family:"JetBrains Mono",monospace}
a{color:inherit}
.container{max-width:1160px;margin:0 auto;padding:72px 24px;position:relative}
.muted{color:var(--muted)}

/* ===== Animated mesh background ===== */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:var(--bg)}
.bg i{position:absolute;border-radius:50%;filter:blur(90px);opacity:.35;animation:drift 26s ease-in-out infinite alternate}
.bg .g1{width:600px;height:600px;background:#00E5FF;top:-200px;left:-150px;opacity:.18}
.bg .g2{width:520px;height:520px;background:#00FF66;bottom:-220px;right:-120px;opacity:.12;animation-duration:32s}
.bg .g3{width:420px;height:420px;background:#2a4cff;top:40%;left:45%;opacity:.12;animation-duration:38s}
@keyframes drift{to{transform:translate(120px,80px) scale(1.15)}}

/* ===== Glass utility ===== */
.glass{background:var(--glass);backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%);border:1px solid var(--edge);box-shadow:inset 0 1px 0 rgba(255,255,255,.06),0 10px 40px rgba(0,0,0,.35)}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;padding:14px 28px;background:rgba(10,11,14,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--edge)}
.brand{display:flex;gap:10px;align-items:center;text-decoration:none;font-weight:700;letter-spacing:.14em}
.ticker{flex:1;overflow:hidden;font-size:12px;color:var(--muted);mask-image:linear-gradient(90deg,transparent,#000 15%,#000 85%,transparent)}
.ticker-track{display:inline-flex;gap:40px;white-space:nowrap;animation:scroll 34s linear infinite}
@keyframes scroll{to{transform:translateX(-50%)}}
.nav-cta{font-size:13px;text-decoration:none;border:1px solid rgba(0,229,255,.5);color:var(--cyan);padding:6px 14px;border-radius:999px}

/* ===== Hero ===== */
.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;padding-top:80px;min-height:calc(100vh - 60px)}
.eyebrow{color:var(--green);font-size:12px;letter-spacing:.1em}
h1{font-size:clamp(44px,6vw,80px);line-height:1.02;margin:10px 0 18px;letter-spacing:-.01em}
h1 em{font-style:italic;background:linear-gradient(90deg,var(--cyan),var(--green));-webkit-background-clip:text;background-clip:text;color:transparent}
.sub{color:#c9ccd4;max-width:48ch;font-size:18px}
.btn{display:inline-block;margin-top:12px;background:linear-gradient(90deg,var(--green),var(--cyan));color:#001;font-weight:700;font-size:14px;padding:13px 22px;border-radius:999px;text-decoration:none;box-shadow:0 0 30px rgba(0,255,102,.25);transition:transform .2s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 0 40px rgba(0,229,255,.45)}
.btn.sm{padding:8px 16px;font-size:12px}
.terminal{margin-top:32px;border-radius:14px;overflow:hidden;max-width:480px}
.term-bar{display:flex;gap:6px;align-items:center;padding:10px 14px;border-bottom:1px solid var(--edge);font:12px "JetBrains Mono",monospace;color:var(--muted)}
.term-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.18)}.term-bar span{margin-left:8px}
pre{margin:0;padding:16px 18px;min-height:150px;font-size:12.5px;color:var(--green);white-space:pre-wrap}
.cursor{animation:blink 1s step-end infinite}@keyframes blink{50%{opacity:0}}

/* Molecule visual */
.visual{position:relative;aspect-ratio:1;max-width:520px;width:100%;justify-self:center}
.molecule{width:100%;height:100%;filter:drop-shadow(0 0 18px rgba(0,229,255,.35))}
.orbit{fill:none;stroke:rgba(0,229,255,.15);stroke-dasharray:2 8;transform-origin:200px 200px;animation:spin 60s linear infinite}
.o2{stroke:rgba(0,255,102,.15);animation-direction:reverse;animation-duration:40s}
.spin{transform-origin:200px 200px;animation:spin 48s linear infinite}
.bonds line{stroke:rgba(244,244,246,.25);stroke-width:1.5}
.pulse{transform-origin:200px 200px;animation:pulse 4s ease-in-out infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{50%{transform:scale(1.18)}}
#particles{position:absolute;inset:0;pointer-events:none}
#particles span{position:absolute;width:3px;height:3px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan);opacity:0;animation:float linear infinite}
@keyframes float{0%{opacity:0;transform:translateY(0)}20%{opacity:.8}100%{opacity:0;transform:translateY(-140px)}}

/* ===== Sections ===== */
h2{font-size:clamp(30px,3.4vw,44px);margin:0 0 6px}
h2 small{display:block;font:12px "JetBrains Mono",monospace;color:var(--cyan);letter-spacing:.12em;margin-bottom:6px}
.section-sub{color:var(--muted);margin:0 0 28px}

/* Category tiles */
.tiles{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.tile{text-align:left;color:var(--text);border-radius:18px;padding:30px;cursor:pointer;font:inherit;transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s,border-color .25s}
.tile b{display:block;font:600 28px "Cormorant Garamond",serif}.tile span{color:var(--muted);font-size:14px}
.tile:hover,.tile:focus-visible{transform:translateY(-6px) scale(1.02);border-color:var(--cyan);box-shadow:0 0 0 1px var(--cyan),0 0 36px rgba(0,229,255,.45),0 20px 50px rgba(0,0,0,.5);outline:none}
.tile:nth-child(even):hover{border-color:var(--green);box-shadow:0 0 0 1px var(--green),0 0 36px rgba(0,255,102,.4),0 20px 50px rgba(0,0,0,.5)}
.tile.active{border-color:var(--green);box-shadow:0 0 0 1px var(--green),0 0 28px rgba(0,255,102,.35)}

/* Search + cards */
.toolbar{display:flex;gap:12px;margin-bottom:22px}
input{flex:1;color:var(--text);padding:13px 18px;border-radius:999px;font-size:13px}
input:focus{outline:none;border-color:var(--cyan)}
.chip{background:none;border:1px solid var(--edge);color:var(--text);border-radius:999px;padding:0 18px;cursor:pointer}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.card{border-radius:18px;padding:24px;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-3px);border-color:rgba(0,229,255,.35)}
.card h3{margin:6px 0;font-size:24px}.card p{color:#c9ccd4;font-size:15px;margin:0 0 12px}
.card ul{list-style:none;padding:0;margin:0 0 8px;font-size:12px}.card em{color:var(--muted);font-style:normal}
.tag{font-size:10px;color:var(--cyan);letter-spacing:.12em;text-transform:uppercase}
.footer{border-top:1px solid var(--edge);font-size:14px;color:#c9ccd4;padding-top:36px}

@media(max-width:820px){.hero{grid-template-columns:1fr;min-height:0}.visual{max-width:340px}.ticker{display:none}.tiles{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ===== Category modal ===== */
.modal{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:24px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(5,6,8,.72);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);animation:fade .2s ease}
.modal-panel{position:relative;width:min(560px,100%);min-height:320px;border-radius:22px;padding:28px;background:rgba(22,25,34,.55);border-color:rgba(0,229,255,.25);box-shadow:0 0 40px rgba(0,229,255,.18),0 30px 80px rgba(0,0,0,.6);animation:pop .25s cubic-bezier(.2,.8,.2,1)}
.modal-close{position:absolute;top:14px;right:14px;width:36px;height:36px;border-radius:50%;border:1px solid var(--edge);background:rgba(255,255,255,.04);color:var(--text);font-size:22px;line-height:1;cursor:pointer}
.modal-close:hover,.modal-close:focus-visible{border-color:var(--cyan);box-shadow:0 0 14px rgba(0,229,255,.4);outline:none}
@keyframes fade{from{opacity:0}}@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.97)}}