/* The Scent Index, landing page. The app's own palette and type (ui/app.css, DESIGN.md §5): white paper, warm ink,
   one blue accent, serif headings, system sans for the rest. System fonts only; nothing is loaded from elsewhere. */
:root{
  --paper:#FFFFFF;--well:#F6F6F5;--cream:#FBF9F4;--ink:#252522;--sub:#686862;--rule:#E5E5E0;--accent:#345FAD;
  --wash:rgba(255,253,248,.86);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --wrap:1120px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  .hero-bg img{filter:brightness(.42) saturate(.85)}
  :root{--paper:#20211F;--well:#2C2E29;--cream:#252623;--ink:#F3F3ED;--sub:#B8BAB2;--rule:#41433E;--accent:#9ABBFA;
    --wash:rgba(32,33,31,.72);color-scheme:dark}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.55 var(--sans);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:-.01em;margin:0}
h1{font-size:clamp(38px,6.2vw,64px);line-height:1.04}
h2{font-size:clamp(30px,4vw,42px);line-height:1.1}
h3{font-size:22px;line-height:1.2}
p{margin:0}
a{color:var(--accent)}
img{max-width:100%;height:auto;display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:var(--paper);padding:10px 14px;border-radius:10px}
.skip:focus{top:12px}
.eyebrow{font-size:14px;font-weight:600;color:var(--accent);margin-bottom:12px}
.lede{font-size:19px;color:var(--sub);margin-top:18px;max-width:34em}
.fine{font-size:14px;color:var(--sub);margin-top:16px}

/* buttons: the app's pills */
.btn{min-height:52px;padding:0 24px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;font-size:16px;text-decoration:none;color:var(--ink);transition:transform .12s ease,opacity .12s ease}
.btn:active{transform:scale(.97)}
.btn svg{width:20px;height:20px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.btn.primary{background:var(--ink);color:var(--paper)}
.btn.primary:hover{opacity:.9}
.btn.soft{background:var(--paper);box-shadow:inset 0 0 0 1.5px var(--rule)}
.btn.soft:hover{box-shadow:inset 0 0 0 1.5px var(--sub)}
.btn.small{min-height:38px;padding:0 16px;font-size:14.5px}
.btn.wide{width:100%}

/* header */
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--rule)}
.top-in{display:flex;align-items:center;gap:16px;min-height:62px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-size:21px;color:var(--ink);text-decoration:none;margin:0}
.mark{width:26px;height:26px;flex:none}
.top-nav{display:none;gap:26px;margin-left:auto}
.top-nav a{color:var(--sub);text-decoration:none;font-size:15px}
.top-nav a:hover{color:var(--ink)}
.top .btn{margin-left:auto}
@media (min-width:760px){.top-nav{display:flex}.top .btn{margin-left:8px}}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--cream)}
.hero-bg img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:75% 50%}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--wash) 0%,var(--wash) 52%,color-mix(in srgb,var(--paper) 30%,transparent) 100%)}
.hero-in{position:relative;display:grid;gap:44px;padding-top:48px;padding-bottom:0}
.hero-copy{max-width:600px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.cta-row .btn{flex:1 1 auto;white-space:nowrap}
@media (max-width:420px){.cta-row .btn{white-space:normal}}
.hero-phones{position:relative;height:440px;margin:0 -20px;display:flex;justify-content:center}
.hero-phones .phone{position:absolute;filter:drop-shadow(0 24px 40px rgba(60,45,30,.22))}
.phone-front{width:min(62vw,300px);left:50%;transform:translateX(-38%);top:0}
.phone-back{width:min(52vw,250px);left:50%;transform:translateX(-102%);top:52px;opacity:.97}
@media (min-width:960px){
  .hero-bg::after{background:linear-gradient(90deg,var(--wash) 0%,var(--wash) 38%,color-mix(in srgb,var(--paper) 0%,transparent) 70%)}
  .hero-in{grid-template-columns:1.05fr .95fr;align-items:center;padding-top:72px;min-height:min(780px,calc(100vh - 62px))}
  .hero-phones{height:680px;margin:0;align-self:end}
  .phone-front{width:300px;transform:translateX(-30%);top:40px}
  .phone-back{width:270px;transform:translateX(-100%);top:110px}
}

/* facts strip */
.facts{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);background:var(--paper);position:relative}
.facts-in{list-style:none;margin:0 auto;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 20px;padding-top:28px;padding-bottom:28px}
.facts b{display:block;font-family:var(--serif);font-weight:400;font-size:26px;line-height:1.15}
.facts span{display:block;font-size:14px;color:var(--sub);margin-top:4px}
@media (min-width:860px){.facts-in{grid-template-columns:repeat(4,minmax(0,1fr))}}

/* how it works */
.how{padding:84px 0 24px}
.how h2{max-width:20em}
.steps{list-style:none;margin:36px 0 0;padding:0;display:grid;gap:16px}
.steps li{background:var(--well);border-radius:22px;padding:24px}
.step-n{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--ink);color:var(--paper);font-weight:600;font-size:15px;margin-bottom:16px}
.steps p{color:var(--sub);margin-top:8px;font-size:16px}
@media (min-width:860px){.steps{grid-template-columns:repeat(3,minmax(0,1fr))}}

/* features */
.feature{padding:72px 0;border-bottom:1px solid var(--rule)}
.feature:last-child{border-bottom:0}
.feature-in{display:grid;gap:40px;align-items:center}
.feature-copy p:not(.eyebrow){color:var(--sub);margin-top:16px;max-width:32em}
.ticks{list-style:none;padding:0;margin:22px 0 0;display:grid;gap:10px}
.ticks li{position:relative;padding-left:30px;font-size:16px}
.ticks li::before{content:"";position:absolute;left:0;top:.28em;width:18px;height:18px;border-radius:50%;background:color-mix(in srgb,var(--accent) 14%,var(--paper))}
.ticks li::after{content:"";position:absolute;left:6px;top:calc(.28em + 4px);width:5px;height:9px;border:solid var(--accent);border-width:0 2px 2px 0;transform:rotate(45deg)}
.feature-art{display:flex;justify-content:center;gap:16px;padding:28px 0;background:radial-gradient(closest-side,color-mix(in srgb,var(--accent) 7%,transparent),transparent)}
.feature-art .phone{width:min(70vw,300px);filter:drop-shadow(0 18px 32px rgba(40,35,25,.16))}
.feature-art.two .phone{width:min(44vw,260px)}
.feature-art.two .phone:nth-child(2),.feature-art.two picture + .phone{margin-top:48px}
@media (min-width:960px){
  .feature-in{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:64px}
  .feature.flip .feature-copy{order:2}
  .feature-art{padding:12px 0}
}

/* the video: portrait, click to play (no autoplay, nothing loads until played) */
.video{padding:84px 0;background:var(--well)}
.video-in{display:grid;gap:36px;align-items:center}
.video .cta-row .btn{flex:0 0 auto}
.video-frame{justify-self:center;width:min(78vw,330px);aspect-ratio:478/850;border-radius:34px;overflow:hidden;background:#000;box-shadow:0 0 0 10px #1c1c1b,0 24px 48px rgba(40,35,25,.22)}
.video-frame video{width:100%;height:100%;object-fit:cover;display:block}
@media (min-width:960px){.video-in{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px}.video-frame{width:340px}}

/* privacy */
.privacy{padding:84px 0;background:var(--ink);color:var(--paper)}
.privacy .eyebrow{color:color-mix(in srgb,var(--accent) 60%,var(--paper))}
.privacy .lede{color:color-mix(in srgb,var(--paper) 72%,var(--ink))}
.privacy a{color:var(--paper)}
.privacy-in{display:grid;gap:40px}
.privacy-in > div p:last-child{margin-top:22px}
.promises{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.promises li{padding:16px 0;border-top:1px solid color-mix(in srgb,var(--paper) 18%,var(--ink));font-size:16px;color:color-mix(in srgb,var(--paper) 78%,var(--ink))}
.promises b{color:var(--paper);font-weight:600}
@media (min-width:960px){.privacy-in{grid-template-columns:1fr 1fr;gap:72px;align-items:start}}

/* FAQ (Mobbin: heading left, questions right) */
.faq{padding:84px 0}
.faq-in{display:grid;gap:28px}
.faq-list details{border-bottom:1px solid var(--rule)}
.faq-list details:first-child{border-top:1px solid var(--rule)}
.faq-list summary{list-style:none;cursor:pointer;padding:20px 40px 20px 0;position:relative;font-size:18px;font-weight:600}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:"";position:absolute;right:6px;top:50%;width:10px;height:10px;border:solid var(--sub);border-width:0 2px 2px 0;transform:translateY(-70%) rotate(45deg);transition:transform .15s ease}
.faq-list details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq-list details p{padding:0 0 20px;color:var(--sub);max-width:40em}
@media (min-width:960px){.faq-in{grid-template-columns:minmax(0,.7fr) minmax(0,1.3fr);gap:64px}}

/* final call to action */
.final{padding:84px 0 92px;background:var(--cream);text-align:center}
.final .lede{margin-left:auto;margin-right:auto}
.get-grid{display:grid;gap:16px;margin-top:36px;text-align:left}
.get-card{background:var(--paper);border-radius:24px;padding:26px;display:flex;flex-direction:column;box-shadow:0 1px 0 var(--rule)}
.get-card ol{margin:14px 0 22px;padding-left:20px;color:var(--sub);flex:1}
.get-card li{margin:6px 0}
@media (min-width:760px){.get-grid{grid-template-columns:1fr 1fr;max-width:820px;margin-left:auto;margin-right:auto}}

/* footer */
.foot{border-top:1px solid var(--rule);padding:36px 0 44px}
.foot-in{display:grid;gap:10px}
.foot .fine{margin-top:0}
.foot-nav{display:flex;flex-wrap:wrap;gap:22px;margin-top:6px}
.foot-nav a{color:var(--ink);font-size:15px}

/* the privacy page and the 404 */
.doc{padding:56px 0 80px}
.doc .wrap{max-width:740px}
.doc h1{font-size:clamp(34px,5vw,48px)}
.doc h2{font-size:26px;margin-top:40px}
.doc p,.doc li{color:var(--sub);margin-top:12px}
.doc ul{padding-left:20px}
.doc strong{color:var(--ink)}