/* Lethal Dose (LD50) marketing site — shared styles for index.html,
   privacy.html and beta-guide.html. Extracted from previously-inlined
   per-page <style> blocks so all pages share one design system. */

:root{
  --ink:#0B0B0C;
  --paper:#F1EEE7;
  --crimson:#C22A2A;
  --deep:#7A1414;
  --amber:#D98E2A;
  --muted:#9C948A;
  --line:#2A2624;
  --panel:#151312;
  --green:#2E7D32;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:'IBM Plex Sans', sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3{
  font-family:'Fraunces', serif;
  font-weight:480;
  margin:0;
  letter-spacing:-0.01em;
}
.mono{font-family:'IBM Plex Mono', monospace;}
a{color:inherit;}
.wrap{max-width:1120px;margin:0 auto;padding:0 28px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important;}
}

/* ---- NAV (shared, every page) ---- */
nav{
  position:sticky;top:0;z-index:50;
  background:rgba(11,11,12,0.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
nav .inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 28px;max-width:1120px;margin:0 auto;
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--paper);}
.brand img{width:30px;height:30px;border-radius:50%;}
.brand span{font-family:'Fraunces',serif;font-size:19px;font-weight:600;letter-spacing:0.01em;}
.navlinks{display:flex;gap:28px;font-size:14px;color:var(--muted);}
.navlinks a{text-decoration:none;transition:color .2s;}
.navlinks a:hover{color:var(--paper);}
.navcta{
  background:var(--crimson);color:var(--paper);
  padding:9px 16px;border-radius:3px;font-size:13.5px;font-weight:500;
  text-decoration:none;border:1px solid var(--crimson);
  transition:background .2s, color .2s;
}
.navcta:hover{background:transparent;color:var(--crimson);}
.back{font-size:13.5px;color:var(--muted);text-decoration:none;}
.back:hover{color:var(--paper);}
@media(max-width:720px){ .navlinks{display:none;} }

/* ---- HERO (index) ---- */
.hero{
  position:relative;
  padding:96px 0 64px;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero .wrap{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr 0.9fr;gap:48px;align-items:center;}
@media(max-width:900px){ .hero .wrap{grid-template-columns:1fr;} }

.eyebrow{
  font-family:'IBM Plex Mono',monospace;
  font-size:13px;font-weight:500;letter-spacing:0.14em;text-transform:uppercase;
  color:var(--amber);margin-bottom:18px;display:flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--amber);display:inline-block;}

.hero h1{
  font-size:clamp(40px,6vw,68px);
  line-height:0.98;
  color:var(--paper);
}
.hero h1 em{font-style:normal;color:var(--crimson);}
.hero p.lede{margin-top:22px;font-size:18px;line-height:1.6;color:#C9C2B8;max-width:46ch;}
.hero .ctas{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.btn-primary{
  background:var(--crimson);color:var(--paper);padding:14px 24px;border-radius:3px;
  text-decoration:none;font-weight:500;font-size:15px;border:1px solid var(--crimson);
  transition:transform .15s, background .2s, color .2s;
}
.btn-primary:hover{background:var(--ink);color:var(--crimson);transform:translateY(-1px);}
.btn-secondary{
  color:var(--paper);padding:14px 20px;text-decoration:none;font-size:15px;
  border-bottom:1px solid var(--muted);transition:border-color .2s, color .2s;
}
.btn-secondary:hover{border-color:var(--paper);}

.hero-note{margin-top:26px;font-size:13px;color:var(--muted);font-family:'IBM Plex Mono',monospace;}

.curve-box{position:relative;}
.curve-box svg{width:100%;height:auto;display:block;}
.curve-label{
  position:absolute;font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--muted);
  letter-spacing:0.05em;
}

/* ---- STATS STRIP (index) ---- */
.stats{border-bottom:1px solid var(--line);background:var(--panel);}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);padding:34px 28px;}
@media(max-width:720px){ .stats .wrap{grid-template-columns:repeat(2,1fr);gap:24px 0;} }
.stat{border-left:1px solid var(--line);padding-left:20px;}
.stat:first-child{border-left:none;padding-left:0;}
@media(max-width:720px){ .stat:nth-child(odd){border-left:none;padding-left:0;} }
.stat .num{font-family:'Fraunces',serif;font-size:34px;color:var(--paper);}
.stat .num span{color:var(--amber);}
.stat .cap{font-size:12.5px;color:var(--muted);margin-top:4px;font-family:'IBM Plex Mono',monospace;}

/* ---- SECTION HEADERS (index) ---- */
section{padding:96px 0;}
.sec-head{max-width:640px;margin-bottom:56px;}
.sec-head .eyebrow{margin-bottom:14px;}
.sec-head h2{font-size:clamp(28px,4vw,42px);color:var(--paper);}
.sec-head p{color:var(--muted);font-size:16px;margin-top:14px;line-height:1.6;}

/* ---- FEATURES / CARD GRID (index) ---- */
.features{border-bottom:1px solid var(--line);}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);}
@media(max-width:900px){ .feat-grid{grid-template-columns:repeat(2,1fr);} }
@media(max-width:600px){ .feat-grid{grid-template-columns:1fr;} }
.feat{background:var(--ink);padding:32px 26px;transition:background .2s;}
.feat:hover{background:var(--panel);}
.feat .tag{font-family:'IBM Plex Mono',monospace;font-size:13px;font-weight:500;color:var(--crimson);letter-spacing:0.08em;}
.feat h3{font-size:19px;margin-top:12px;color:var(--paper);font-weight:500;}
.feat p{color:var(--muted);font-size:14.5px;line-height:1.6;margin-top:10px;}

/* ---- SHOWCASE / SCREENSHOT (index) ---- */
.showcase{border-bottom:1px solid var(--line);background:var(--panel);}
.showcase .wrap{display:grid;grid-template-columns:0.85fr 1.15fr;gap:56px;align-items:center;}
@media(max-width:900px){ .showcase .wrap{grid-template-columns:1fr;} }
.phone-frame{
  border:1px solid var(--line);border-radius:22px;padding:10px;background:#0e0d0c;
  max-width:300px;margin:0 auto;
  box-shadow:0 40px 80px -30px rgba(0,0,0,0.6);
}
.phone-frame img{width:100%;border-radius:14px;display:block;}
.showcase-copy h2{color:var(--paper);font-size:clamp(26px,3.4vw,36px);margin-bottom:18px;}
.showcase-copy ul{list-style:none;padding:0;margin:24px 0 0;}
.showcase-copy li{display:flex;gap:14px;padding:14px 0;border-top:1px solid var(--line);font-size:15px;color:#D6D0C8;}
.showcase-copy li:last-child{border-bottom:1px solid var(--line);}
.showcase-copy li .n{font-family:'IBM Plex Mono',monospace;color:var(--amber);font-size:13px;padding-top:2px;}

/* ---- READINESS / SCORE FORMULA (index) ---- */
.formula{padding:80px 0;border-bottom:1px solid var(--line);}
.formula .wrap{text-align:center;}
.formula .eyebrow{justify-content:center;}
.formula .eyebrow::before{display:none;}
.formula h2{font-size:clamp(24px,3vw,32px);color:var(--paper);margin-bottom:30px;}
.formula-line{
  font-family:'IBM Plex Mono',monospace;
  font-size:clamp(16px,2.6vw,26px);
  color:var(--paper);
  display:inline-flex;flex-wrap:wrap;gap:10px;align-items:baseline;justify-content:center;
}
.formula-line .term{color:var(--crimson);}
.formula-line .op{color:var(--muted);}
.formula-line .weight{color:var(--amber);font-size:0.7em;}

/* ---- TRUST SUMMARY (index, short version + link to privacy.html) ---- */
.trust{background:var(--panel);border-bottom:1px solid var(--line);}
.trust .wrap{padding-top:48px;}
.trust-head{padding:64px 28px 0;max-width:1120px;margin:0 auto;}
.trust-list{list-style:none;padding:0;margin:0 0 28px;max-width:640px;}
.trust-list li{
  padding:12px 0;border-top:1px solid var(--line);
  color:#D6D0C8;font-size:15px;line-height:1.6;
}
.trust-list li:last-child{border-bottom:1px solid var(--line);}
.trust-link{display:inline-block;margin-top:8px;font-size:14.5px;color:var(--amber);text-decoration:underline;}

/* ---- CTA BAND (index) ---- */
.cta-band{padding:100px 0;text-align:center;position:relative;overflow:hidden;}
.cta-band h2{font-size:clamp(30px,5vw,52px);color:var(--paper);max-width:16ch;margin:0 auto;}
.cta-band h2 em{font-style:normal;color:var(--crimson);}
.cta-band p{color:var(--muted);margin:18px auto 0;max-width:44ch;font-size:16px;}
.cta-band .ctas{margin-top:34px;display:flex;justify-content:center;gap:14px;flex-wrap:wrap;}

/* ---- FOOTER (shared, every page) ---- */
footer{border-top:1px solid var(--line);padding:40px 0;}
footer .wrap{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;}
footer .brand span{font-size:15px;}
footer .flinks{display:flex;gap:22px;font-size:13.5px;color:var(--muted);}
footer .flinks a{text-decoration:none;transition:color .2s;}
footer .flinks a:hover{color:var(--paper);}
footer .copy{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);width:100%;margin-top:8px;}
footer a{color:var(--muted);text-decoration:none;}
footer a:hover{color:var(--paper);}

.fade-up{opacity:0;transform:translateY(16px);transition:opacity .6s ease, transform .6s ease;}
.fade-up.in{opacity:1;transform:none;}

/* ---- CERTIFICATION FIT (index) ---- */
.cert-fit{border-bottom:1px solid var(--line);}
.cert-callout{margin-top:40px;padding:20px 24px;border-left:2px solid var(--line);color:var(--muted);font-size:14px;line-height:1.65;}
.cert-disclaimer{margin-top:16px;font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:#5E5750;line-height:1.6;}
.cert-disclaimer a{color:#8a8178;text-decoration:underline;}

/* ---- LEGAL / PRIVACY PAGE ---- */
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 28px;}
header.page{padding:72px 0 40px;border-bottom:1px solid var(--line);}
header.page h1{font-size:clamp(32px,5vw,46px);}
header.page p{color:var(--muted);margin-top:14px;font-size:15px;font-family:'IBM Plex Mono',monospace;}
header.page.narrow p{color:#C9C2B8;font-family:'IBM Plex Sans',sans-serif;font-size:15.5px;line-height:1.65;max-width:56ch;}
main{padding:56px 0 96px;}
main h2{font-size:21px;color:var(--paper);margin:44px 0 14px;font-weight:500;}
main h2:first-child{margin-top:0;}
main h3{font-size:16px;color:var(--paper);margin:22px 0 8px;font-weight:600;}
main p, main li{color:#C9C2B8;font-size:15.5px;line-height:1.75;}
main ul{padding-left:20px;}
main li{margin-bottom:8px;}
main a{color:var(--amber);text-decoration:underline;}
.callout{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--crimson);padding:20px 22px;border-radius:2px;margin:28px 0;}
.callout p{color:var(--paper);margin:0;font-size:15px;}
.toc{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:18px 22px;margin:24px 0 8px;}
.toc p{margin:0 0 8px;color:var(--muted);font-size:13px;font-family:'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:0.08em;}
.toc ol{margin:0;padding-left:20px;columns:2;column-gap:24px;}
@media(max-width:600px){ .toc ol{columns:1;} }
.toc li{font-size:14px;margin-bottom:6px;}
.toc a{color:#D6D0C8;text-decoration:none;}
.toc a:hover{color:var(--amber);}
table.datasafety{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;}
table.datasafety th, table.datasafety td{border:1px solid var(--line);padding:10px 12px;text-align:left;color:#D6D0C8;}
table.datasafety th{background:var(--panel);color:var(--paper);font-family:'IBM Plex Mono',monospace;font-size:12.5px;text-transform:uppercase;letter-spacing:0.04em;}

/* ---- BETA GUIDE ---- */
.wrap-beta{max-width:720px;margin:0 auto;padding:0 24px;}
header.page.beta{padding:56px 0 32px;}
.install-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;}
.install-btn{
  background:var(--crimson);color:var(--paper);padding:12px 18px;border-radius:3px;
  text-decoration:none;font-weight:500;font-size:14px;border:1px solid var(--crimson);
  transition:background .2s, color .2s;
}
.install-btn:hover{background:transparent;color:var(--crimson);}
.install-btn.secondary{background:transparent;color:var(--paper);border-color:var(--line);}
.install-btn.secondary:hover{border-color:var(--paper);}

.report-callout{
  background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--amber);
  padding:16px 18px;border-radius:2px;margin-top:26px;font-size:14px;color:#D6D0C8;line-height:1.6;
}
.report-callout strong{color:var(--paper);}

.step-section{margin-bottom:48px;}
.step-head{display:flex;align-items:baseline;gap:10px;margin-bottom:6px;}
.step-num{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--crimson);font-weight:600;}
.step-section h2{font-size:22px;color:var(--paper);}
.step-intro{color:var(--muted);font-size:14px;margin:8px 0 18px;line-height:1.6;}

.check-list{display:flex;flex-direction:column;gap:10px;margin-bottom:14px;}
.check-item{
  display:flex;align-items:flex-start;gap:12px;background:var(--panel);border:1px solid var(--line);
  border-radius:8px;padding:13px 15px;cursor:pointer;transition:border-color .15s;
}
.check-item:hover{border-color:var(--muted);}
.check-item input[type="checkbox"]{
  appearance:none;-webkit-appearance:none;width:19px;height:19px;flex-shrink:0;margin-top:1px;
  border:1.5px solid var(--muted);border-radius:4px;cursor:pointer;position:relative;background:transparent;
}
.check-item input[type="checkbox"]:checked{background:var(--green);border-color:var(--green);}
.check-item input[type="checkbox"]:checked::after{
  content:"\2713";position:absolute;top:-2px;left:3px;color:#fff;font-size:13px;font-weight:700;
}
.check-item span{font-size:14px;color:#D6D0C8;line-height:1.5;}

.field-label{font-size:12.5px;color:var(--muted);font-family:'IBM Plex Mono',monospace;letter-spacing:0.03em;margin-bottom:8px;display:block;}
textarea, input[type="text"], input[type="email"]{
  width:100%;background:var(--panel);border:1px solid var(--line);color:var(--paper);
  border-radius:8px;padding:12px 14px;font-family:'IBM Plex Sans',sans-serif;font-size:14px;
  resize:vertical;min-height:64px;transition:border-color .15s;
}
textarea:focus, input:focus{outline:none;border-color:var(--amber);}
textarea::placeholder, input::placeholder{color:#6b655e;}

.general-grid{display:flex;flex-direction:column;gap:18px;}
.general-grid .q{font-size:14px;color:var(--paper);margin-bottom:8px;font-weight:500;}

.identity-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:36px;}
@media(max-width:520px){ .identity-row{grid-template-columns:1fr;} }

.submit-bar{
  position:sticky;bottom:0;background:linear-gradient(to top, var(--ink) 70%, transparent);
  padding:24px 0 8px;margin-top:8px;
}
.submit-btn{
  width:100%;background:var(--crimson);border:1px solid var(--crimson);color:var(--paper);
  padding:16px;border-radius:8px;font-size:15.5px;font-weight:600;cursor:pointer;
  font-family:'IBM Plex Sans',sans-serif;transition:background .2s, color .2s;
}
.submit-btn:hover{background:var(--deep);}
.submit-note{text-align:center;font-size:12px;color:var(--muted);margin-top:10px;font-family:'IBM Plex Mono',monospace;}