/* Yepgent Science — LIGHT "computational-chemistry instrument". One committed green on bright white.
   Self-contained (system fonts only, no external deps -> deploy- and CSP-safe). */
:root{
  --bg:#ffffff; --bg-2:#f4f8f5; --ink:#0c1611; --muted:#48584f; --faint:#6f7f75;
  --green:#12a150; --green-br:#16b866; --green-dp:#0a7a43; --green-soft:#e8f6ee; --green-glow:rgba(18,161,80,.32);
  --edge:#e5ebe7; --edge-2:#eef2ef; --card:#ffffff; --panel:#fbfdfc;
  --high:#d6432f; --low:#0a7a43;
  --sh-sm:0 1px 2px rgba(12,40,26,.05); --sh:0 2px 4px rgba(12,40,26,.05),0 14px 40px -12px rgba(12,40,26,.14);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --e:cubic-bezier(.16,1,.3,1); --w:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--sans);
  -webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--green-dp);text-decoration:none}a:hover{color:var(--green)}
.wrap{max-width:var(--w);margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono)}
::selection{background:rgba(18,161,80,.18)}
code{font:13px/1.5 var(--mono);color:var(--green-dp)}
pre{background:#0c1611;border:1px solid var(--edge);border-radius:14px;padding:18px 20px;overflow:auto;
  font-size:13px;line-height:1.75;color:#dfeee5;box-shadow:var(--sh)}
pre code{color:#eafff4}pre .c{color:#6f8a7c}
h2{font-size:clamp(27px,3.6vw,40px);line-height:1.1;letter-spacing:-.025em;margin:0 0 20px;font-weight:800;text-wrap:balance}
h3{font-size:18px;margin:0 0 8px;font-weight:700;letter-spacing:-.01em}
p{text-wrap:pretty}.muted{color:var(--muted)}
section{padding:clamp(56px,7.2vw,104px) 0;position:relative}

/* reveal — visible by default; gated on `.js` + motion-ok so nothing ships blank */
.js [data-reveal]{opacity:0;transform:translateY(20px)}
.js [data-reveal].in{opacity:1;transform:none;transition:opacity .7s var(--e) var(--d,0ms),transform .7s var(--e) var(--d,0ms)}
@media (prefers-reduced-motion: reduce){.js [data-reveal]{opacity:1;transform:none}}

/* floating glass-pill nav (light frosted — the one purposeful glass element) */
.nav{position:fixed;top:16px;left:50%;transform:translateX(-50%);z-index:50;width:calc(100% - 32px);max-width:var(--w)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:56px;padding:0 8px 0 20px;
  border-radius:999px;border:1px solid var(--edge);background:rgba(255,255,255,.72);
  backdrop-filter:blur(14px) saturate(1.5);-webkit-backdrop-filter:blur(14px) saturate(1.5);box-shadow:var(--sh-sm);transition:.3s var(--e)}
.nav.s .nav-in{background:rgba(255,255,255,.92);box-shadow:var(--sh)}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16.5px;color:var(--ink);letter-spacing:-.01em}
.brand:hover{color:var(--ink)}.brand .leaf{font-size:19px}
.brand small{font-family:var(--mono);font-weight:600;color:var(--green-dp);font-size:12px;letter-spacing:.04em}
.navlinks{display:flex;gap:4px;align-items:center}
.navlinks a{color:var(--muted);font-size:14px;font-weight:600;padding:8px 13px;border-radius:999px;transition:.2s}
.navlinks a:hover{color:var(--ink);background:var(--bg-2)}
.navlinks .go{background:var(--green);color:#fff;font-weight:700}.navlinks .go:hover{background:var(--green-dp);color:#fff}
.navlinks .go.signed-in{background:var(--green-dp)}.navlinks .go.signed-in::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:#8ef0b8;margin-right:7px;vertical-align:middle}
@media(max-width:600px){.navlinks a:not(.go){display:none}}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;border-radius:12px;
  padding:13px 24px;cursor:pointer;border:1px solid transparent;transition:.22s var(--e)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-dp);color:#fff;box-shadow:0 10px 30px -8px var(--green-glow);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--edge);box-shadow:var(--sh-sm)}
.btn-ghost:hover{border-color:var(--green);color:var(--green-dp)}

/* hero: molecular canvas + soft mint aurora, on white */
.hero{position:relative;isolation:isolate;min-height:90vh;display:flex;align-items:center;overflow:hidden;padding:112px 0 52px;
  background:linear-gradient(180deg,var(--green-soft) 0%,#fff 60%)}
#bg{position:absolute;inset:0;width:100%;height:100%;z-index:1;display:block}
.aurora{position:absolute;inset:0;z-index:0;pointer-events:none;filter:blur(60px);opacity:.85}
.aurora::before,.aurora::after{content:"";position:absolute;border-radius:50%}
.aurora::before{width:50vw;height:50vw;left:-6vw;top:-12vw;background:radial-gradient(circle,rgba(18,161,80,.4),transparent 62%);animation:drift 20s var(--e) infinite alternate}
.aurora::after{width:42vw;height:42vw;right:-4vw;top:20vw;background:radial-gradient(circle,rgba(64,196,220,.28),transparent 62%);animation:drift2 26s var(--e) infinite alternate}
@keyframes drift{to{transform:translate(9vw,7vw) scale(1.16)}}
@keyframes drift2{to{transform:translate(-8vw,-4vw) scale(1.1)}}
.hero .veil{position:absolute;inset:0;z-index:2;pointer-events:none;
  background:radial-gradient(130% 90% at 50% 30%,transparent 55%,rgba(255,255,255,.75) 90%,#fff)}
.hero .wrap{position:relative;z-index:3}
.kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12.5px;color:var(--green-dp);
  border:1px solid rgba(18,161,80,.28);background:rgba(255,255,255,.6);padding:6px 14px;border-radius:999px;margin-bottom:26px}
.kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 9px var(--green);animation:pulse 2.4s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35}}
.hero h1{font-size:clamp(40px,7vw,84px);line-height:1.02;letter-spacing:-.045em;margin:0 0 22px;font-weight:800;text-wrap:balance;max-width:16ch}
.hero .lead{font-size:clamp(17px,2.1vw,21px);color:var(--muted);max-width:60ch;margin:0 0 32px;line-height:1.6}
.cta{display:flex;gap:14px;flex-wrap:wrap}

/* instrument readout strip (replaces the stat-tile cliche) */
.readout{display:flex;flex-wrap:wrap;margin-top:44px;border:1px solid var(--edge);border-radius:14px;
  background:rgba(255,255,255,.66);backdrop-filter:blur(8px);overflow:hidden;font-family:var(--mono);max-width:640px;box-shadow:var(--sh)}
.readout .r{flex:1;min-width:140px;padding:15px 20px;border-right:1px solid var(--edge-2)}
.readout .r:last-child{border-right:0}
.readout .rv{font-size:22px;font-weight:700;color:var(--green-dp);letter-spacing:-.01em}
.readout .rl{font-size:11px;color:var(--faint);margin-top:3px;text-transform:uppercase;letter-spacing:.08em}

/* catalog: featured (Anima) + secondary — deliberately NOT an identical grid */
.cat{display:grid;grid-template-columns:1.4fr 1fr;gap:20px}
@media(max-width:820px){.cat{grid-template-columns:1fr}}
.tile{position:relative;border:1px solid var(--edge);border-radius:20px;background:var(--card);padding:30px;
  display:flex;flex-direction:column;transition:.3s var(--e);overflow:hidden;box-shadow:var(--sh-sm)}
.tile.feat{grid-row:span 2;background:radial-gradient(130% 130% at 100% 0%,var(--green-soft),#fff 55%)}
.tile.wide{grid-column:1 / -1;flex-direction:row;flex-wrap:wrap;align-items:center;gap:6px 26px}
.tile.wide .glyph{font-size:30px}.tile.wide h3{margin:0}.tile.wide p{flex:1 1 340px;margin:0}
.tile.wide .row{margin:0;flex:0 0 auto}
@media(max-width:600px){.tile.wide{flex-direction:column;align-items:flex-start}}
.tile.live{cursor:pointer}
.tile.live:hover{border-color:rgba(18,161,80,.5);transform:translateY(-3px);box-shadow:0 26px 60px -28px var(--green-glow)}
.tile .glyph{font-size:30px;margin-bottom:0}.tile.feat .glyph{font-size:44px}
.tile h3{font-size:22px;margin:22px 0 10px}.tile.feat h3{font-size:30px;letter-spacing:-.02em}
.tile.feat p{flex:none}.tile.feat .row{margin-top:auto;padding-top:8px}
.tile p{color:var(--muted);font-size:14.5px;margin:0;line-height:1.6;flex:1}
.tile .row{display:flex;align-items:center;justify-content:space-between;margin-top:22px}
.tile .open{color:var(--green-dp);font-weight:700;font-size:14.5px}
.chip{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;padding:5px 11px;border-radius:999px}
.chip.on{color:#fff;background:var(--green)}
.chip.soon{color:var(--faint);border:1px solid var(--edge)}
.tile.soon{opacity:.78}.tile.soon:hover{opacity:1;border-color:var(--edge)}

/* mission — feature list, no repeated eyebrows */
.feat3{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:32px;margin-top:8px}
.feat3 .it{border-top:2px solid var(--green-soft);padding-top:18px}
.feat3 .it .g{font-size:22px;margin-bottom:12px}
.feat3 .it p{color:var(--muted);font-size:14.5px;margin:8px 0 0}

/* demo readout panel (Anima page) */
.panel{border:1px solid var(--edge);border-radius:20px;background:var(--card);padding:8px;margin-top:12px;box-shadow:var(--sh)}
.panel-h{font-family:var(--mono);font-size:12px;color:var(--faint);padding:12px 16px 6px;overflow:auto;white-space:nowrap}
.panel-h b{color:var(--green-dp)}
.demo{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:8px}
@media(max-width:600px){.demo{grid-template-columns:1fr}}
.rc{border:1px solid var(--edge);border-radius:14px;padding:20px;background:var(--bg-2)}
.rc .ep{font-family:var(--mono);font-size:12px;color:var(--muted)}
.badge{display:inline-flex;font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.05em;
  padding:4px 11px;border-radius:999px;margin:12px 0 6px}
.badge.HIGH{color:var(--high);background:rgba(214,67,47,.09);border:1px solid rgba(214,67,47,.3)}
.badge.LOW{color:var(--green-dp);background:var(--green-soft);border:1px solid rgba(18,161,80,.32)}
.rc .p{font-size:34px;font-weight:800;letter-spacing:-.02em}.rc .c{font-family:var(--mono);font-size:11.5px;color:var(--faint);margin-top:6px}

/* callout (full border + bg tint; NO side-stripe) */
.callout{border:1px solid var(--edge);border-radius:16px;
  background:radial-gradient(130% 150% at 0% 0%,var(--green-soft),#fff 52%);padding:26px 28px;color:var(--muted);font-size:15px;line-height:1.65;box-shadow:var(--sh-sm)}
.callout b{color:var(--ink)}

/* how-it-works — a real numbered sequence */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:26px}
.step{position:relative;padding-top:14px;border-top:2px solid var(--green-soft)}
.step .n{font-family:var(--mono);font-size:13px;color:var(--green-dp)}
.step h3{margin-top:8px}.step p{color:var(--muted);font-size:14.5px;margin:8px 0 0}

.disc{color:var(--faint);font-size:12.5px;line-height:1.6}
footer{border-top:1px solid var(--edge);padding:40px 0;color:var(--muted);font-size:13.5px;background:var(--bg-2)}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer a{color:var(--muted);font-weight:600}footer a:hover{color:var(--green-dp)}
.sec-head{max-width:60ch;margin-bottom:36px}.sec-head p{color:var(--muted);font-size:16.5px;margin:12px 0 0}

/* ── line icons (one-green instrument set; replaces full-color emoji) ── */
.glyph svg,.g svg,.tget li svg,.tled svg{fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;display:block}
.glyph{color:var(--green-dp)}.glyph svg{width:1em;height:1em}
.g{color:var(--green-dp)}.g svg{width:1em;height:1em}

/* featured-tile 'what you get' mini-list */
.tget{list-style:none;padding:0;margin:18px 0 4px;display:grid;gap:11px}
.tget li{display:flex;gap:11px;align-items:flex-start;font-size:14px;color:var(--muted);line-height:1.5}
.tget li svg{width:18px;height:18px;flex:none;margin-top:1px;color:var(--green)}
.tget li b{color:var(--ink);font-weight:650}

/* roadmap value-prop line on 'soon' tiles */
.tned{color:var(--muted);font-size:13px;margin:9px 0 0;line-height:1.55}

/* ── 'validated in the open' trust band ── */
.trust{background:var(--bg-2);border-top:1px solid var(--edge);border-bottom:1px solid var(--edge)}
.proof{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px;margin-top:6px}
.pf{border:1px solid var(--edge);border-radius:16px;background:var(--card);padding:24px 26px;box-shadow:var(--sh-sm)}
.pf .tled{display:flex;align-items:center;gap:10px;color:var(--green-dp);font-weight:700;font-size:14.5px}
.pf .tled svg{width:20px;height:20px;flex:none}
.pf p{color:var(--muted);font-size:13.8px;margin:12px 0 0;line-height:1.62}
.pf .fig{font-family:var(--mono);font-size:27px;font-weight:700;color:var(--green-dp);letter-spacing:-.01em;margin-top:14px}
.pf .fig small{font-size:12px;color:var(--faint);font-weight:600;margin-left:7px;letter-spacing:.02em}

/* ── community / collaboration ── */
.collab{display:grid;grid-template-columns:repeat(auto-fit,minmax(238px,1fr));gap:20px;margin-top:6px}
.cc{border:1px solid var(--edge);border-radius:18px;background:var(--card);padding:26px;box-shadow:var(--sh-sm);transition:.3s var(--e)}
.cc:hover{border-color:rgba(18,161,80,.4);box-shadow:var(--sh)}
.cc .ccrow{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:14px 0 8px}
.cc h3{margin:0;font-size:17px}
.cc p{color:var(--muted);font-size:14px;line-height:1.6;margin:0}
.join-cta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-top:34px}
.join-note{font-family:var(--mono);font-size:12px;color:var(--faint)}

/* readout confidence-interval micro-text (Anima) */
.readout .ci{font-size:11px;color:var(--faint);font-weight:600;margin-left:6px;letter-spacing:.01em}

/* ── richer footer ── */
footer .wrap{display:block}
.foot-grid{display:grid;grid-template-columns:1.7fr 1fr 1.1fr;gap:30px;align-items:start}
@media(max-width:640px){.foot-grid{grid-template-columns:1fr;gap:24px}}
.foot-grid h4{font-family:var(--mono);font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--faint);margin:0 0 13px;font-weight:600}
.foot-brand{font-family:var(--mono);color:var(--green-br);font-weight:700;font-size:15px}
.foot-grid .about{color:var(--muted);font-size:13.5px;margin:11px 0 0;line-height:1.62;max-width:42ch}
.foot-grid ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.foot-grid li{color:var(--muted);font-size:13.5px;line-height:1.4}
.foot-grid a{color:var(--muted);font-weight:600}
.foot-bot{margin-top:32px;padding-top:20px;border-top:1px solid var(--edge);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}