@font-face{font-family:"Nunito";src:url("fonts/Nunito-Variable.ttf") format("truetype");font-weight:200 1000;font-style:normal;font-display:swap}

:root{
  --navy-top:#172452;--navy-bottom:#050A1F;--night-top:#0D1226;--night-bottom:#03050D;
  --glow:#597AD9;--violet:#7B55D9;--gold:#D4A854;--gold-hi:#FADB85;--silver:#CCD1DB;--silver-hi:#F7FAFF;
  --fg:#F5F7FF;--fg-muted:#C3CAE0;--rule:rgba(255,255,255,.12);
  --glass:rgba(255,255,255,.06);--glass-border:rgba(255,255,255,.14);
  --on-green:#1A803D;--accent:#5B8DEF;--accent-solid:#3A67D0;--on-accent:#fff;
  --radius:20px;--maxw:1120px;--gutter:16px;
  --bg-top:var(--navy-top);--bg-bottom:var(--navy-bottom);
  --eyebrow:var(--gold-hi);--focus:var(--gold-hi);--header-bg:rgba(5,10,31,.62);
  --shadow:rgba(3,5,13,.55);--sheet-bg:#0B1230;--glow-a:.3;--glow-b:.3;--wave:rgba(204,209,219,.35);--device-bg:#050A1F;
  --check:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23FADB85' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E");
  color-scheme:dark;
}
:root[data-theme="light"]{
  --fg:#0B1230;--fg-muted:#434E6D;--rule:rgba(11,18,48,.14);
  --glass:rgba(11,18,48,.05);--glass-border:rgba(11,18,48,.14);
  --accent:#2F63D6;--accent-solid:#2F63D6;
  --bg-top:#F7F8FC;--bg-bottom:#E7ECFA;
  --eyebrow:#7A5A12;--focus:#7A5A12;--header-bg:rgba(247,248,252,.78);
  --sheet-bg:#F7F8FC;--shadow:rgba(11,18,48,.16);--glow-a:.16;--glow-b:.12;--wave:rgba(11,18,48,.3);--device-bg:#050A1F;
  --check:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237A5A12' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E");
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:88px}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;min-height:100vh;color:var(--fg);background:var(--bg-bottom) linear-gradient(180deg,var(--bg-top),var(--bg-bottom)) fixed;
  font:1.0625rem/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-x:hidden}
body::before{content:"";position:fixed;inset:-10%;z-index:-1;pointer-events:none;
  background:
    radial-gradient(40% 40% at 30% 25%,rgba(89,122,217,var(--glow-a)),transparent 70%),
    radial-gradient(40% 40% at 70% 70%,rgba(123,85,217,var(--glow-b)),transparent 70%);
  animation:drift 60s ease-in-out infinite alternate}
@keyframes drift{from{transform:translate(-4%,-3%)}to{transform:translate(4%,3%)}}
@media (prefers-reduced-motion:reduce){body::before{animation:none}}

img,svg,canvas{max-width:100%}
img{height:auto}
h1,h2,h3{font-family:"Nunito",system-ui,sans-serif;margin:0;text-wrap:balance}
h1{font-weight:900;font-size:clamp(2.4rem,6vw,4.4rem);line-height:1.05;letter-spacing:-.01em}
h2{font-weight:900;font-size:clamp(1.7rem,3.5vw,2.6rem);line-height:1.12}
h3{font-weight:800;font-size:1.25rem;line-height:1.25}
p{margin:0;max-width:62ch}
a{color:var(--accent)}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.small,.muted{font-size:.9rem;color:var(--fg-muted)}

.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
@media (min-width:768px){:root{--gutter:32px}}
.section{padding-block:clamp(40px,6vw,80px)}
.section-head{margin-bottom:clamp(24px,4vw,44px)}
.section-head p{margin-top:12px;color:var(--fg-muted)}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

.skip{position:absolute;left:16px;top:-100px;z-index:100;padding:12px 18px;border-radius:999px;background:var(--accent-solid);color:var(--on-accent);font-weight:700;text-decoration:none}
.skip:focus{top:12px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:var(--header-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-bottom:1px solid var(--rule)}
.bar{display:flex;align-items:center;gap:16px;min-height:68px}
.brand{display:inline-flex;align-items:center;min-height:44px;margin-right:auto}
.brand img{height:45px;width:auto;display:block}
.brand .for-light{display:none}
:root[data-theme="light"] .brand .for-light{display:block}
:root[data-theme="light"] .brand .for-dark{display:none}
.site-nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.site-nav a:not(.btn){display:inline-flex;align-items:center;min-height:44px;padding:0 12px;border-radius:999px;color:var(--fg);text-decoration:none;font-weight:600;font-size:.95rem}
.site-nav a:not(.btn):hover,.site-nav a[aria-current="page"]{background:var(--glass)}
.tools{display:flex;align-items:center;gap:8px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:999px;border:1px solid var(--glass-border);background:var(--glass);color:var(--fg);cursor:pointer;padding:0}
.icon-btn svg{width:22px;height:22px;display:block}
.icon-btn:hover{border-color:var(--fg-muted)}
.theme-toggle .sun{display:none}
:root[data-theme="light"] .theme-toggle .sun{display:block}
:root[data-theme="light"] .theme-toggle .moon{display:none}
.burger{display:none}
.burger .x{display:none}
.burger[aria-expanded="true"] .x{display:block}
.burger[aria-expanded="true"] .bars{display:none}
.site-nav .sheet-cta{display:none}
@media (min-width:1000px){.brand img{height:52px}}
@media (max-width:999px){
  .tools .header-cta{display:none}
  .burger{display:inline-flex}
  .site-nav{position:absolute;left:0;right:0;top:100%;background:var(--sheet-bg);border-bottom:1px solid var(--rule);padding:12px var(--gutter) 24px}
  .js .site-nav:not(.open){display:none}
  .site-nav ul{flex-direction:column;gap:0;margin-bottom:16px}
  .site-nav a:not(.btn){width:100%;border-radius:12px;font-size:1.1rem}
  .site-nav .sheet-cta{display:inline-flex;width:100%}
  .bar{position:relative}
  .site-nav{order:3}
}
@media (min-width:1000px){.site-nav{order:0}}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:14px 22px;border-radius:999px;border:1px solid transparent;font:inherit;font-weight:700;line-height:1.2;text-decoration:none;text-align:center;cursor:pointer}
.btn-primary{background:var(--accent-solid);color:var(--on-accent)}
.btn-primary:hover{filter:brightness(1.08)}
.btn-secondary{background:var(--glass);border-color:var(--glass-border);color:var(--fg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px)}
.btn-secondary:hover{border-color:var(--fg-muted)}
.btn:focus-visible{border-radius:999px}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* cards */
.card{background:var(--glass);border:1px solid var(--glass-border);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:var(--radius);padding:clamp(20px,3vw,32px)}
.card h3+p{margin-top:10px;color:var(--fg-muted)}

/* hero */
.hero{padding-block:clamp(32px,6vw,80px) clamp(40px,7vw,96px)}
.hero-grid{display:grid;gap:40px;align-items:center}
@media (min-width:900px){.hero-grid{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr)}}
.eyebrow{color:var(--eyebrow);font-weight:700;font-size:.95rem;margin-bottom:16px}
.hero h1{max-width:13ch}
.wave{display:block;width:100%;height:120px;margin:-8px 0 -4px}
.hero .sub{font-size:1.2rem;color:var(--fg);max-width:52ch}
.hero .btn-row{margin-top:28px}
.hero .note{margin-top:16px}
.hero-art{position:relative;display:grid;place-items:center}
.watermark{position:absolute;width:min(560px,130%);left:50%;top:50%;transform:translate(-50%,-50%);opacity:.08;pointer-events:none;z-index:0}
.device{position:relative;z-index:1;width:100%;max-width:320px;margin:0;border:1px solid rgba(255,255,255,.18);border-radius:44px;overflow:hidden;background:var(--device-bg);box-shadow:0 30px 80px var(--shadow)}
.device img{display:block;width:100%;height:auto}
.device-tablet{max-width:560px;border-radius:28px}

/* why */
.cards-3{display:grid;gap:20px}
@media (min-width:768px){.cards-3{grid-template-columns:repeat(3,1fr)}}
.cards-3 .card{border-top:2px solid var(--gold)}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;gap:20px;counter-reset:step}
@media (min-width:768px){.steps{grid-template-columns:repeat(3,1fr)}}
.step{position:relative;counter-increment:step}
.step::before{content:counter(step);position:absolute;top:20px;right:22px;font:900 1.6rem/1 "Nunito",system-ui,sans-serif;color:var(--eyebrow)}
.step-icon{width:48px;height:48px;margin-bottom:18px;color:var(--eyebrow)}
.step-icon svg{width:100%;height:100%;display:block}
.steps-note{margin-top:24px;color:var(--fg-muted)}

/* modes */
.modes{list-style:none;margin:0;padding:0;display:grid;gap:16px}
@media (min-width:640px){.modes{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1000px){.modes{grid-template-columns:repeat(3,1fr)}}
.modes .card{height:100%}

/* science teaser */
.teaser{background:linear-gradient(160deg,rgba(23,36,82,.9),rgba(3,5,13,.92));border-color:var(--glass-border);color:#F5F7FF}
.teaser h2{margin-bottom:16px}
.teaser p{color:#C3CAE0;max-width:62ch}
.teaser .btn{margin-top:28px}
.teaser .btn-secondary{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.2);color:#F5F7FF}
.teaser .btn:focus-visible{outline-color:#FADB85}

/* privacy */
.two-col{display:grid;gap:32px;align-items:start}
@media (min-width:768px){.two-col{grid-template-columns:1.2fr 1fr;gap:56px}}
.two-col h2{margin-bottom:16px}
.checks{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.checks li{display:flex;gap:12px;align-items:center;font-weight:600;padding:12px 16px;border-radius:14px;background:var(--glass);border:1px solid var(--glass-border)}
.checks li::before{content:"";flex:none;width:22px;height:22px;background:var(--check) center/contain no-repeat}
.link-line{margin-top:20px}
.link-line a{display:inline-flex;align-items:center;min-height:44px;font-weight:700}

/* honest limits */
.limits{background:transparent;border-style:dashed;max-width:820px}
.limits h2{font-size:1.35rem;margin-bottom:12px}
.limits ul{margin:0;padding-left:1.2em;color:var(--fg-muted);font-size:.95rem;display:grid;gap:8px}

/* ipad */
.ipad{display:grid;gap:28px;justify-items:center;text-align:center}
.ipad p{margin-inline:auto}
.ipad .lead{font:900 clamp(1.7rem,3.5vw,2.6rem)/1.12 "Nunito",system-ui,sans-serif}
.ipad figcaption{margin-top:32px;color:var(--fg-muted)}
.ipad figure{margin:0;width:100%;display:grid;justify-items:center}

/* founder */
.founder{max-width:760px}
.founder h2{margin-bottom:16px}
.founder p+p{margin-top:16px}
.sig{font-weight:700;color:var(--eyebrow)}

/* closing */
.closing{text-align:center;display:grid;justify-items:center;gap:24px}
.closing h2{max-width:18ch}
.closing p{margin-inline:auto}

/* footer */
.site-footer{border-top:1px solid var(--rule);padding-block:48px 32px;margin-top:24px}
.foot-grid{display:grid;gap:28px}
@media (min-width:768px){.foot-grid{grid-template-columns:repeat(3,1fr)}}
.foot-grid h2{font:800 1rem/1.3 "Nunito",system-ui,sans-serif;margin-bottom:8px;color:var(--fg)}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid a,.foot-grid .plain{display:inline-flex;align-items:center;min-height:44px;color:var(--fg-muted)}
.foot-grid a:hover{color:var(--fg)}
.legal{margin-top:32px;padding-top:20px;border-top:1px solid var(--rule);max-width:none}

/* prose pages (support, privacy, terms, science) */
.prose{max-width:720px;padding-block:clamp(32px,6vw,72px) 32px}
.prose h1{margin-bottom:8px}
.prose h2{font-size:clamp(1.3rem,2.4vw,1.6rem);margin:2.2rem 0 .6rem}
.prose p,.prose li{max-width:62ch}
.prose p+p{margin-top:12px}
.prose ol,.prose ul{padding-left:1.3em}
.prose li+li{margin-top:6px}
.prose .phone-aside{margin:28px 0 0}
.prose .btn{margin-top:32px;text-decoration:none}
.science h2{margin-top:2.4rem}
.science .device{margin-top:24px}

@media (max-width:480px){.btn-row .btn{width:100%}}
@media print{body::before{display:none}.site-header{position:static}}