:root{
  /* sampled from the ridge photograph */
  --void:#010203; --base:#070A0E; --base2:#0B1017; --storm:#16222F;
  --rock:#2B3543; --ridge:#3F5468; --label:#7C8DA0; --cloud:#8A99AB; --glow:#C2CEDB; --snow:#EDF2F7;
  /* the only chroma on this page. it belongs to data. */
  --sleep:#6EA8FE; --recovery:#57E0A6; --strain:#3AA0F0; --pulse:#FF7088; --gold:#D6A94A;

  --hair:rgba(138,153,171,.14); --hair2:rgba(138,153,171,.26); --hair3:rgba(138,153,171,.42);
  --sans:'Instrument Sans',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --disp:'Archivo',-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --mono:'Martian Mono',ui-monospace,'SF Mono',Menlo,monospace;
  --ease:cubic-bezier(.22,.7,.24,1);
  --maxw:1240px; --gut:26px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--base);color:var(--glow);font-family:var(--sans);
  font-size:17px;line-height:1.62;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:rgba(110,168,254,.26);color:var(--snow)}
:focus-visible{outline:2px solid var(--sleep);outline-offset:4px;border-radius:4px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut);width:100%}
.skip{position:absolute;left:-9999px;background:var(--snow);color:var(--void);padding:12px 18px;border-radius:6px;z-index:200}
.skip:focus{left:16px;top:14px}

/* ── the scale: this page's signature. a graduated instrument rule. ─────── */
.scale{position:relative;height:10px;width:100%}
.scale::before{content:'';position:absolute;inset:0 0 auto 0;height:1px;background:var(--hair2)}
.scale::after{
  content:'';position:absolute;left:0;right:0;top:0;height:10px;
  background-image:
    repeating-linear-gradient(90deg,var(--hair3) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(90deg,var(--hair) 0 1px,transparent 1px 8px);
  background-size:100% 10px,100% 4px;background-repeat:no-repeat;
}

.mono{font-family:var(--mono);font-size:10px;font-weight:400;letter-spacing:.2em;text-transform:uppercase;color:var(--label)}
.rail{display:flex;align-items:center;gap:14px;margin-bottom:30px}
.rail .dot{width:7px;height:7px;border-radius:50%;background:var(--c,var(--cloud));flex:none;box-shadow:0 0 14px -1px var(--c,var(--cloud))}
.rail .rail-line{flex:1;height:1px;background:var(--hair2);min-width:20px}
.rail .val{color:var(--cloud);letter-spacing:.14em;white-space:nowrap}

h1,h2,h3{font-family:var(--disp);font-weight:600;margin:0;color:var(--snow);letter-spacing:-.03em;line-height:1.03}
h1{font-size:clamp(2.85rem,7vw,6.1rem);line-height:.94;letter-spacing:-.042em;font-variation-settings:'wdth' 100}
h2{font-size:clamp(1.95rem,4vw,3.3rem)}
h3{font-size:1.14rem;letter-spacing:-.015em}
p{margin:0}
.lead{font-size:clamp(1.06rem,1.5vw,1.28rem);color:var(--cloud);line-height:1.58;max-width:56ch}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-family:var(--sans);font-weight:600;
  font-size:15px;padding:15px 26px;border-radius:2px;transition:transform .16s var(--ease),background .18s,color .18s,border-color .18s;border:1px solid transparent}
.btn:hover{transform:translateY(-2px)}
.btn-solid{background:var(--snow);color:var(--void)}
.btn-solid:hover{background:#fff}
.btn-line{border-color:var(--hair3);color:var(--glow)}
.btn-line:hover{border-color:var(--cloud);background:rgba(138,153,171,.07)}

/* ── nav ───────────────────────────────────────────────────────────────── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,border-color .3s,backdrop-filter .3s;border-bottom:1px solid transparent}
.nav.is-stuck{background:rgba(7,10,14,.78);backdrop-filter:blur(16px) saturate(1.3);-webkit-backdrop-filter:blur(16px) saturate(1.3);border-bottom-color:var(--hair)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:70px}
.brand{display:flex;align-items:center;color:var(--snow)}
.brand b{font-family:var(--disp);font-weight:700;font-variation-settings:'wdth' 122;font-size:16px;letter-spacing:.22em}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a.nl{font-size:14px;color:var(--cloud);transition:color .18s}
.nav-links a.nl:hover{color:var(--snow)}
.nav .btn{padding:10px 18px;font-size:13.5px}
@media(max-width:820px){.nav-links a.nl{display:none}}

/* ── hero ──────────────────────────────────────────────────────────────── */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;isolation:isolate;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:64% 46%;
  filter:contrast(1.07) brightness(1.1) saturate(1.05);animation:settle 2.2s var(--ease) both}
@keyframes settle{from{transform:scale(1.075);opacity:0}to{transform:scale(1);opacity:1}}
.hero-media::after{
  content:'';position:absolute;inset:0;
  background:
    linear-gradient(to top,var(--base) 0%,rgba(7,10,14,.84) 15%,rgba(7,10,14,.10) 44%,rgba(7,10,14,.16) 100%),
    linear-gradient(to right,rgba(4,7,11,.84) 0%,rgba(4,7,11,.30) 42%,transparent 68%);
}
.hero-inner{padding-top:150px;padding-bottom:56px}
.eyebrow{display:inline-flex;align-items:center;gap:11px;margin-bottom:30px;color:var(--cloud)}
.eyebrow::before{content:'';width:34px;height:1px;background:var(--hair3)}
h1 .ln{display:block;overflow:hidden}
h1 .ln span{display:block;animation:rise 1.15s var(--ease) both}
h1 .ln:nth-child(1) span{animation-delay:.30s}
h1 .ln:nth-child(2) span{animation-delay:.40s}
@keyframes rise{from{transform:translateY(102%)}to{transform:translateY(0)}}
.hero-sub{margin-top:32px;max-width:47ch;font-size:clamp(1.04rem,1.45vw,1.2rem);color:var(--glow);opacity:.9;animation:fade 1s var(--ease) .72s both}
.hero-cta{display:flex;flex-wrap:wrap;gap:13px;margin-top:38px;animation:fade 1s var(--ease) .86s both}
@keyframes fade{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}

/* the reading band: the hero's thesis, stated as an instrument face */
.band{position:relative;border-top:0;padding-bottom:30px;animation:fade 1s var(--ease) 1s both}
.band .scale{animation:draw 1.5s var(--ease) 1.15s both}
@keyframes draw{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
.readouts{display:grid;grid-template-columns:repeat(4,1fr);gap:2px 26px;padding-top:18px}
.ro{display:flex;flex-direction:column;gap:7px;position:relative}
.ro-k{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--cloud)}
.ro-k::before{content:'';width:14px;height:2px;background:var(--c);box-shadow:0 0 12px var(--c)}
.ro-v{font-family:var(--disp);font-variation-settings:'wdth' 108;font-weight:500;font-size:clamp(1.9rem,3.4vw,2.9rem);color:var(--snow);letter-spacing:-.03em;line-height:1;display:flex;align-items:baseline;gap:3px}
.ro-v i{font-style:normal;font-size:.42em;color:var(--ridge);font-family:var(--mono);letter-spacing:.06em;font-weight:400}
@media(max-width:720px){
  .readouts{grid-template-columns:repeat(2,1fr);gap:26px 20px}
  .hero-media img{object-position:70% 42%}
  .hero-inner{padding-top:120px}
}

/* ── generic section rhythm ────────────────────────────────────────────── */
section{position:relative}
.sec{padding:clamp(78px,8.4vw,132px) 0}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ── thesis ────────────────────────────────────────────────────────────── */
.thesis h2{max-width:19ch}
.thesis .lead{margin-top:24px}
.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;margin-top:78px;background:var(--hair)}
.col{background:var(--base);padding:34px 30px 38px}
.col .mono{display:block;margin-bottom:20px;color:var(--cloud)}
.col p{color:var(--cloud);font-size:15.5px;line-height:1.62}
@media(max-width:860px){.cols{grid-template-columns:1fr}}

/* ── google health strip ───────────────────────────────────────────────── */
.gh{background:var(--base2);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.gh-in{padding:clamp(56px,7vw,88px) 0;display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(32px,5vw,80px);align-items:start}
.gh h2{font-size:clamp(1.6rem,2.7vw,2.35rem);max-width:16ch}
.gh p{color:var(--cloud);font-size:16px}
.gh-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:26px;list-style:none;padding:0}
.gh-list li{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--cloud);
  border:1px solid var(--hair2);padding:8px 12px;border-radius:2px}
@media(max-width:860px){.gh-in{grid-template-columns:1fr;gap:28px}}

/* ── pillar module ─────────────────────────────────────────────────────── */
.pillar{border-top:1px solid var(--hair)}
.pgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.82fr);gap:clamp(40px,7vw,110px);align-items:center}
.pillar.flip .pgrid{grid-template-columns:minmax(0,.82fr) minmax(0,1fr)}
.pillar.flip .pcopy{order:2}
.pillar.flip .pshot{order:1}
.pcopy h2{max-width:15ch}
.pcopy .lead{margin-top:22px}
.specs{list-style:none;margin:44px 0 0;padding:0;border-top:1px solid var(--hair)}
.specs li{display:grid;grid-template-columns:132px 1fr;gap:22px;padding:16px 0;border-bottom:1px solid var(--hair);align-items:baseline}
.specs .k{font-family:var(--mono);font-size:9.5px;letter-spacing:.17em;text-transform:uppercase;color:var(--label);padding-top:3px}
.specs .v{color:var(--cloud);font-size:15.5px;line-height:1.55}
@media(max-width:980px){
  .pgrid,.pillar.flip .pgrid{grid-template-columns:1fr;gap:52px}
  .pillar.flip .pcopy{order:1}.pillar.flip .pshot{order:2}
}
@media(max-width:520px){.specs li{grid-template-columns:1fr;gap:5px}.specs .k{padding-top:0}}

/* device */
.device{position:relative;margin:0 auto;max-width:318px;border-radius:52px;padding:9px;
  background:linear-gradient(160deg,#3A4655 0%,#10151C 22%,#05080C 55%,#222B36 100%);
  box-shadow:0 2px 0 rgba(255,255,255,.07) inset,0 44px 90px -34px rgba(0,0,0,.95),0 0 0 1px rgba(0,0,0,.6)}
.device img{border-radius:44px;width:100%;height:auto;background:#000}
.device::after{content:'';position:absolute;inset:9px;border-radius:44px;pointer-events:none;
  background:linear-gradient(158deg,rgba(255,255,255,.09) 0%,rgba(255,255,255,.02) 16%,transparent 42%);
  box-shadow:0 0 0 1px rgba(255,255,255,.06) inset}
.shot-cap{margin-top:20px;text-align:center;color:var(--label);font-family:var(--mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase}

/* ── age moment ────────────────────────────────────────────────────────── */
.age{background:var(--void);border-top:1px solid var(--hair);overflow:hidden;position:relative}
.age::before{content:'';position:absolute;left:50%;bottom:-38%;width:min(1500px,150%);height:120%;transform:translateX(-50%);
  background:radial-gradient(ellipse at 50% 100%,rgba(87,224,166,.10) 0%,rgba(22,34,47,.42) 34%,transparent 68%);pointer-events:none}
.age-in{position:relative;text-align:center;display:flex;flex-direction:column;align-items:center}
.ghost{position:absolute;top:60%;left:50%;transform:translate(-50%,-50%);font-family:var(--disp);font-weight:700;
  font-variation-settings:'wdth' 125;font-size:clamp(17rem,44vw,38rem);line-height:.8;color:rgba(138,153,171,.085);
  pointer-events:none;user-select:none;z-index:0;letter-spacing:-.04em}
.age-in > *{position:relative;z-index:1}
.age .rail{justify-content:center;max-width:440px;width:100%}
.age h2{max-width:16ch;margin-inline:auto}
.age .lead{margin:22px auto 0;text-align:center}
.age .device{margin-top:60px}
.age-note{margin-top:34px;color:var(--label);font-size:13.5px;max-width:46ch}

/* ── privacy ───────────────────────────────────────────────────────────── */
.priv{border-top:1px solid var(--hair)}
.priv-stack{margin-top:52px;border-top:1px solid var(--hair)}
.priv-stack p{font-family:var(--disp);font-weight:500;font-size:clamp(1.3rem,3vw,2.15rem);letter-spacing:-.03em;
  color:var(--snow);padding:30px 0;border-bottom:1px solid var(--hair);line-height:1.18}
.priv-foot{margin-top:40px;color:var(--cloud);max-width:62ch;font-size:16px}

/* ── get ───────────────────────────────────────────────────────────────── */
.get{background:var(--base2);border-top:1px solid var(--hair)}
.bgrid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(38px,6vw,86px);margin-top:56px;align-items:start}
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{counter-increment:s;display:grid;grid-template-columns:auto 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--hair)}
.steps li::before{content:counter(s,decimal-leading-zero);font-family:var(--mono);font-size:10px;color:var(--label);letter-spacing:.1em;padding-top:5px}
.steps b{display:block;color:var(--snow);font-weight:600;font-size:15.5px}
.steps span{display:block;color:var(--cloud);font-size:14.5px;margin-top:5px;line-height:1.5}
.reqs{margin-top:18px;font-family:var(--mono);font-size:9px;letter-spacing:.16em;text-transform:uppercase;color:var(--label);line-height:2.1}
.reqs a{color:var(--glow);border-bottom:1px solid var(--hair3)}
@media(max-width:900px){.bgrid{grid-template-columns:1fr;gap:44px}}

/* ── faq ───────────────────────────────────────────────────────────────── */
.faq-list{margin-top:52px;border-top:1px solid var(--hair)}
.faq-list details{border-bottom:1px solid var(--hair)}
.faq-list summary{list-style:none;cursor:pointer;padding:24px 44px 24px 0;position:relative;
  font-family:var(--disp);font-weight:500;font-size:clamp(1.02rem,1.7vw,1.28rem);color:var(--snow);letter-spacing:-.02em}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'';position:absolute;right:6px;top:50%;width:11px;height:1px;background:var(--cloud);transition:transform .28s var(--ease)}
.faq-list summary::before{content:'';position:absolute;right:11px;top:50%;width:1px;height:11px;margin-top:-5px;background:var(--cloud);transition:transform .28s var(--ease),opacity .28s}
.faq-list details[open] summary::before{transform:rotate(90deg);opacity:0}
.faq-list details p{padding:0 8% 26px 0;color:var(--cloud);font-size:15.8px;max-width:70ch}
.faq-list details a{color:var(--sleep);border-bottom:1px solid rgba(110,168,254,.35)}

/* ── closer + footer ───────────────────────────────────────────────────── */
.closer{border-top:1px solid var(--hair);text-align:center}
.closer h2{max-width:18ch;margin-inline:auto}
.closer .lead{margin:24px auto 0;text-align:center}
.closer .hero-cta{justify-content:center;animation:none}
footer{border-top:1px solid var(--hair);padding:40px 0 54px}
.foot{display:flex;flex-wrap:wrap;gap:20px 34px;justify-content:space-between;align-items:center}
.foot .mono{color:var(--ridge)}
.foot-links{display:flex;flex-wrap:wrap;gap:26px}
.foot-links a{font-size:14px;color:var(--cloud)}
.foot-links a:hover{color:var(--snow)}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-delay:0ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ── subpage additions (google-health, fitbit-dashboard-alternative); tokens match the homepage ── */
.reveal{opacity:1;transform:none}
.sub-head{padding:150px 0 64px;border-bottom:1px solid var(--hair);background:
  radial-gradient(ellipse at 20% 0%,rgba(22,34,47,.55) 0%,transparent 60%),var(--base)}
.sub-head h1{font-size:clamp(2.4rem,5.4vw,4.6rem);max-width:17ch}
.sub-head .hero-sub{animation:none}
.sub-head .hero-cta{animation:none}
.sub-head .scale{margin-top:56px}
.shots{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px;margin-top:56px}
.shots .device{max-width:250px;border-radius:42px;padding:7px}
.shots .device img{border-radius:36px}
.shots .device::after{inset:7px;border-radius:36px}
@media(max-width:980px){.shots{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}}
.scores{list-style:none;margin:44px 0 0;padding:0;border-top:1px solid var(--hair)}
.scores li{display:grid;grid-template-columns:200px 1fr;gap:22px;padding:20px 0;border-bottom:1px solid var(--hair);align-items:baseline}
.scores .k{display:flex;align-items:center;gap:10px;font-family:var(--disp);font-weight:600;color:var(--snow);font-size:1.14rem;letter-spacing:-.015em}
.scores .k::before{content:'';width:14px;height:2px;background:var(--c,var(--cloud));box-shadow:0 0 12px var(--c,var(--cloud))}
.scores .v{color:var(--cloud);font-size:15.5px;line-height:1.55}
@media(max-width:620px){.scores li{grid-template-columns:1fr;gap:6px}}
.not{margin-top:44px;border-top:1px solid var(--hair);list-style:none;padding:0}
.not li{padding:22px 0;border-bottom:1px solid var(--hair);display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(18px,4vw,60px)}
.not b{font-family:var(--disp);font-weight:500;color:var(--snow);font-size:clamp(1.05rem,1.8vw,1.3rem);letter-spacing:-.02em;line-height:1.25}
.not span{color:var(--cloud);font-size:15.5px}
@media(max-width:720px){.not li{grid-template-columns:1fr;gap:8px}}
.cmp-wrap{margin-top:52px;overflow-x:auto;-webkit-overflow-scrolling:touch;border-top:1px solid var(--hair)}
.cmp{border-collapse:collapse;width:100%;min-width:760px}
.cmp th,.cmp td{text-align:left;vertical-align:top;padding:18px 18px 18px 0;border-bottom:1px solid var(--hair);font-size:15px;line-height:1.5}
.cmp thead th{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--cloud);font-weight:400;padding-top:20px}
.cmp thead th.us{color:var(--snow)}
.cmp tbody th{font-family:var(--mono);font-size:9.5px;letter-spacing:.17em;text-transform:uppercase;color:var(--label);font-weight:400;width:150px;padding-top:21px}
.cmp td{color:var(--cloud)}
.cmp td.us{color:var(--glow)}
/* mobile: the table becomes one card per row */
@media(max-width:720px){
  .cmp{min-width:0}
  .cmp thead{display:none}
  .cmp,.cmp tbody,.cmp tr,.cmp th,.cmp td{display:block;width:auto}
  .cmp tr{padding:18px 0;border-bottom:1px solid var(--hair2)}
  .cmp tbody th{border:0;padding:0 0 10px}
  .cmp td{border:0;padding:6px 0 6px 108px;position:relative;min-height:48px}
  .cmp td::before{content:attr(data-app);font-family:var(--mono);font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--label);position:absolute;left:0;top:11px;width:96px;line-height:1.5}
  .cmp-wrap{overflow:visible}
}
.fit{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1px;background:var(--hair);margin-top:52px}
.fit > div{background:var(--base);padding:30px 30px 34px}
.fit ul{list-style:none;margin:18px 0 0;padding:0}
.fit li{color:var(--cloud);font-size:15.5px;padding:12px 0;border-bottom:1px solid var(--hair)}
.fit li b{color:var(--snow);font-weight:600}
@media(max-width:860px){.fit{grid-template-columns:1fr}}
.asof{margin-top:18px;color:var(--label);font-size:13.5px;max-width:70ch}
.gh-in{padding-left:var(--gut);padding-right:var(--gut)}