/* BioAge.io – dark longevity theme */
:root{
  --bg:#05080b;--bg2:#081017;--surface:rgba(255,255,255,.035);--surface2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.09);--border2:rgba(61,255,168,.35);
  --text:#e9f2f1;--muted:#93a4ab;--dim:#65767d;
  --green:#3dffa8;--cyan:#22e4ff;--orange:#ffa24a;--red:#ff5f5f;
  --grad:linear-gradient(90deg,var(--green),var(--cyan));
  --radius:18px;--radius-sm:12px;
  --font:"Inter","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono","SF Mono",ui-monospace,Menlo,Consolas,monospace;
  --maxw:1120px;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{overflow-x:clip;-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:76px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden;
  background-image:radial-gradient(900px 520px at 85% -10%,rgba(34,228,255,.10),transparent 60%),radial-gradient(800px 520px at -10% 10%,rgba(61,255,168,.08),transparent 60%)}
img,svg{display:block;max-width:100%}
a{color:var(--cyan);text-decoration:none;text-underline-offset:3px}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:12px;top:-60px;background:var(--green);color:#02140c;padding:10px 14px;border-radius:10px;font-weight:700;z-index:100}
.skip-link:focus{top:12px}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.icon{width:20px;height:20px;flex:none;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* Header */
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);background:rgba(5,8,11,.72);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;letter-spacing:-.01em;font-size:18px}
.brand:hover{text-decoration:none}
.brand svg{width:30px;height:30px}
.brand .tld{color:var(--green)}
.nav{display:flex;align-items:center;gap:6px}
.nav a{color:var(--muted);font-size:15px;padding:8px 12px;border-radius:10px}
.nav a:hover{color:var(--text);background:var(--surface);text-decoration:none}
.nav .nav-hide{display:none}
.nav a.btn-primary{color:#021510;padding:0 16px}
.nav a.btn-primary:hover{background:var(--grad)}
@media (min-width:760px){.nav .nav-hide{display:inline-block}}

/* Buttons */
.btn{--h:52px;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:var(--h);padding:0 24px;border-radius:999px;border:1px solid transparent;font:inherit;font-weight:650;font-size:16px;cursor:pointer;transition:transform .2s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s;white-space:nowrap;-webkit-tap-highlight-color:transparent}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--grad);color:#021510;box-shadow:0 0 0 1px rgba(61,255,168,.3),0 8px 30px -6px rgba(61,255,168,.55),0 0 50px -10px rgba(34,228,255,.6)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 0 0 1px rgba(61,255,168,.5),0 12px 38px -6px rgba(61,255,168,.7),0 0 70px -8px rgba(34,228,255,.75)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:var(--surface);color:var(--text);border-color:var(--border)}
.btn-ghost:hover:not(:disabled){border-color:rgba(255,255,255,.22);background:var(--surface2)}
.btn:disabled{opacity:.35;cursor:not-allowed}
.btn-sm{--h:40px;padding:0 16px;font-size:14px}
.btn-lg{--h:60px;padding:0 32px;font-size:17px}

/* Hero */
.hero{position:relative;padding:72px 0 56px;text-align:center;overflow:hidden;isolation:isolate}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--green);padding:6px 14px;border:1px solid rgba(61,255,168,.25);border-radius:999px;background:rgba(61,255,168,.06)}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:pulse 2.2s ease-in-out infinite}
@keyframes pulse{50%{opacity:.35;box-shadow:0 0 2px var(--green)}}
.hero h1{font-size:clamp(38px,9vw,76px);line-height:1.02;letter-spacing:-.035em;margin:22px auto 18px;max-width:14ch;font-weight:780}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 24px rgba(61,255,168,.25))}
.hero p.lede{font-size:clamp(17px,2.4vw,20px);color:var(--muted);max-width:40rem;margin:0 auto 32px}
.hero-actions{display:flex;flex-direction:column;align-items:center;gap:14px}
.hero-meta{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-top:30px;color:var(--dim);font-size:14px}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta .icon{width:16px;height:16px;color:var(--green)}
.hero-orb{position:absolute;inset:auto 50% -40px auto;transform:translateX(50%);width:560px;height:560px;max-width:120vw;border-radius:50%;pointer-events:none;z-index:-1;background:radial-gradient(circle,rgba(34,228,255,.10),transparent 62%)}
.hero-ring{width:100%;max-width:340px;margin:44px auto 0;opacity:.95}

/* Calculator */
.section{padding:64px 0}
.calc-section{padding:24px 0 72px;scroll-margin-top:72px}
.calc-section .wrap{max-width:720px}
.card{background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.02));border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 30px 80px -40px rgba(0,0,0,.8),inset 0 1px 0 rgba(255,255,255,.05)}
.calc-card{padding:24px 20px 20px;position:relative;overflow:hidden;transition:border-color .4s,box-shadow .4s}
.calc-section.is-revealed .calc-card{border-color:rgba(61,255,168,.28);box-shadow:0 0 0 1px rgba(61,255,168,.08),0 30px 90px -40px rgba(61,255,168,.35)}
@media (min-width:640px){.calc-card{padding:36px 40px 32px}}
.calc-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.calc-head h2{margin:0;font-size:15px;font-weight:600;color:var(--muted);letter-spacing:.02em}
#progress-text{white-space:nowrap;font-family:var(--mono);font-size:13px;color:var(--green)}
.progress{position:relative;height:6px;border-radius:99px;background:rgba(255,255,255,.07);overflow:hidden;margin-bottom:10px}
#progress-bar{--p:20%;position:absolute;inset:0 auto 0 0;width:var(--p);background:var(--grad);border-radius:99px;box-shadow:0 0 16px rgba(61,255,168,.7);transition:width .45s cubic-bezier(.2,.8,.2,1)}
.dots{display:flex;justify-content:space-between;margin-bottom:26px}
.dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.12);transition:background .3s,box-shadow .3s}
.dot.on{background:var(--green);box-shadow:0 0 10px var(--green)}
.steps{position:relative}
.step{position:absolute;top:0;left:0;right:0;border:0;margin:0;padding:0;min-width:0;opacity:0;visibility:hidden;transform:translateX(40px);transition:opacity .35s ease,transform .45s cubic-bezier(.2,.8,.2,1),visibility 0s linear .45s}
.step.is-before{transform:translateX(-40px)}
.step.is-active{position:relative;opacity:1;visibility:visible;transform:none;transition:opacity .4s ease .08s,transform .5s cubic-bezier(.2,.8,.2,1) .04s,visibility 0s}
.step:focus{outline:none}
.choices:not(.stack) .choice{white-space:nowrap;gap:10px;padding:12px 14px}
.choices:not(.stack) .choice .check{display:none}
@media (min-width:480px){.choices:not(.stack) .choice .check{display:grid}}
.step legend{display:block;width:100%;padding:0;font-size:clamp(22px,4.6vw,28px);font-weight:720;letter-spacing:-.02em;line-height:1.2;margin-bottom:8px}
.step .q-text{display:block}
.step .q-num{font-weight:500;letter-spacing:0;display:flex;align-items:center;gap:8px;color:var(--cyan);font-family:var(--mono);font-size:13px;margin-bottom:10px}
.step .q-num .icon{width:18px;height:18px}
.step .hint{color:var(--muted);margin:0 0 22px;font-size:15px}
.age-field{display:flex;align-items:baseline;gap:12px}
.age-field input{width:100%;max-width:220px;font:inherit;font-size:44px;font-weight:700;font-family:var(--mono);letter-spacing:-.02em;color:var(--text);background:rgba(0,0,0,.35);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 18px;transition:border-color .2s,box-shadow .2s;-moz-appearance:textfield;appearance:textfield}
.age-field input::-webkit-outer-spin-button,.age-field input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.age-field input:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 4px rgba(61,255,168,.15),0 0 30px -6px rgba(61,255,168,.5)}
.age-field input[aria-invalid="true"]{border-color:var(--red);box-shadow:0 0 0 4px rgba(255,95,95,.15)}
.age-field .unit{color:var(--muted);font-size:18px}
.readout{display:flex;align-items:baseline;gap:10px;margin-bottom:18px}
.readout output{font-family:var(--mono);font-size:52px;font-weight:700;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.readout .unit{color:var(--muted)}
.readout .tag{margin-left:auto;font-size:13px;font-weight:600;padding:5px 12px;border-radius:99px;border:1px solid var(--border);color:var(--muted)}
input[type=range]{--fill:50%;-webkit-appearance:none;appearance:none;width:100%;height:36px;background:transparent;cursor:pointer;margin:0}
input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:99px;background:linear-gradient(90deg,var(--green),var(--cyan)) 0/var(--fill) 100% no-repeat,rgba(255,255,255,.09)}
input[type=range]::-moz-range-track{height:8px;border-radius:99px;background:rgba(255,255,255,.09)}
input[type=range]::-moz-range-progress{height:8px;border-radius:99px;background:var(--grad)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;margin-top:-10px;background:#fff;border:0;box-shadow:0 0 0 6px rgba(61,255,168,.18),0 0 22px rgba(61,255,168,.8);transition:box-shadow .2s}
input[type=range]::-moz-range-thumb{width:28px;height:28px;border-radius:50%;background:#fff;border:0;box-shadow:0 0 0 6px rgba(61,255,168,.18),0 0 22px rgba(61,255,168,.8)}
input[type=range]:focus{outline:none}
input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 8px rgba(34,228,255,.35),0 0 26px rgba(34,228,255,.9)}
input[type=range]:focus-visible::-moz-range-thumb{box-shadow:0 0 0 8px rgba(34,228,255,.35),0 0 26px rgba(34,228,255,.9)}
.scale{display:flex;justify-content:space-between;color:var(--dim);font-size:13px;font-family:var(--mono);margin-top:4px}
.choices{display:grid;gap:10px;grid-template-columns:1fr 1fr}
.choices.stack{grid-template-columns:1fr}
.choice{display:flex;align-items:center;gap:12px;min-height:58px;padding:12px 16px;text-align:left;font:inherit;font-size:16px;font-weight:600;color:var(--text);background:rgba(0,0,0,.28);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .2s,background .2s,box-shadow .25s,transform .15s;-webkit-tap-highlight-color:transparent}
.choice:hover{border-color:rgba(255,255,255,.22);background:rgba(255,255,255,.04)}
.choice:active{transform:scale(.985)}
.choice .icon{color:var(--muted);transition:color .2s}
.choice small{display:block;font-weight:450;color:var(--muted);font-size:13px;margin-top:2px}
.choice .check{margin-left:auto;width:22px;height:22px;border-radius:50%;border:1.5px solid rgba(255,255,255,.2);display:grid;place-items:center;flex:none;transition:all .2s}
.choice .check svg{width:14px;height:14px;opacity:0;stroke:#021510;stroke-width:3;fill:none}
.choice[aria-checked="true"]{border-color:var(--green);background:rgba(61,255,168,.07);box-shadow:0 0 0 1px rgba(61,255,168,.35),0 0 28px -8px rgba(61,255,168,.6)}
.choice[aria-checked="true"] .icon{color:var(--green)}
.choice[aria-checked="true"] .check{background:var(--green);border-color:var(--green);box-shadow:0 0 12px var(--green)}
.choice[aria-checked="true"] .check svg{opacity:1}
.calc-error{margin:18px 0 0;color:#ffb4b4;font-size:15px;display:flex;gap:8px;align-items:center}
.calc-nav{display:flex;justify-content:space-between;gap:12px;margin-top:30px;padding-top:22px;border-top:1px solid var(--border)}
.calc-nav .btn-primary{flex:1;max-width:280px;margin-left:auto}
.privacy-note{display:flex;gap:8px;align-items:center;justify-content:center;color:var(--dim);font-size:13px;margin:16px 0 0}
.privacy-note .icon{width:15px;height:15px}

/* Result */
.result{padding:28px 20px;animation:rise .6s cubic-bezier(.2,.8,.2,1)}
@media (min-width:640px){.result{padding:40px}}
@keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
.result{--tone:var(--cyan);--tone-rgb:34,228,255}
.result.good{--tone:var(--green);--tone-rgb:61,255,168}
.result.bad{--tone:var(--orange);--tone-rgb:255,162,74}
.result h2{margin:0 0 4px;font-size:15px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.result h2:focus{outline:none}
.verdict{display:flex;align-items:center;gap:10px;font-size:clamp(26px,5.5vw,34px);font-weight:760;letter-spacing:-.02em;color:var(--tone);margin:6px 0 4px;text-shadow:0 0 30px rgba(var(--tone-rgb),.4)}
.verdict .icon{width:30px;height:30px}
.result .v-good,.result .v-bad,.result .v-even{display:none}
.result.good .v-good,.result.bad .v-bad,.result.even .v-even{display:block}
.res-diff{color:var(--muted);margin:0 0 26px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.age-tile{border:1px solid var(--border);border-radius:var(--radius-sm);padding:18px 16px;background:rgba(0,0,0,.3);text-align:center}
.age-tile .lbl{font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.07em}
.age-tile .num{font-family:var(--mono);font-weight:750;font-size:clamp(44px,12vw,72px);line-height:1.05;margin:8px 0 2px;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.age-tile .sub{font-size:13px;color:var(--dim)}
.age-tile.bio{border-color:rgba(var(--tone-rgb),.55);background:radial-gradient(circle at 50% 0,rgba(var(--tone-rgb),.14),rgba(0,0,0,.3) 70%);box-shadow:0 0 40px -12px rgba(var(--tone-rgb),.6)}
.age-tile.bio .num{color:var(--tone);text-shadow:0 0 28px rgba(var(--tone-rgb),.55)}
.result.landed .age-tile.bio .num{animation:pop .5s ease}
@keyframes pop{40%{transform:scale(1.06)}}
.delta{display:inline-flex;margin-top:14px;font-family:var(--mono);font-weight:700;font-size:14px;padding:6px 12px;border-radius:99px;color:var(--tone);border:1px solid rgba(var(--tone-rgb),.4);background:rgba(var(--tone-rgb),.08)}
.factors{margin-top:28px;padding:20px;border-radius:var(--radius-sm);background:rgba(0,0,0,.25);border:1px solid var(--border)}
.factors h3{margin:0 0 4px;font-size:18px}
.factors .hint{margin:0 0 14px;color:var(--muted);font-size:14px}
.factor-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.factor{display:grid;grid-template-columns:1fr auto;align-items:center;gap:4px 12px;padding:12px 14px;border-radius:10px;background:rgba(255,255,255,.03);border-left:3px solid var(--dim)}
.factor.minus{border-left-color:var(--green)}
.factor.plus{border-left-color:var(--orange)}
.factor-main strong{display:block;font-size:15px}
.factor-detail{font-size:13px;color:var(--muted)}
.factor-years{font-family:var(--mono);font-weight:700;font-size:15px}
.factor.minus .factor-years{color:var(--green)}
.factor.plus .factor-years{color:var(--orange)}
.factor.zero .factor-years{color:var(--dim)}
.factor-tip{grid-column:1/-1;margin:4px 0 0;font-size:13.5px;color:#c9d6d8}
.factor-links{grid-column:1/-1;margin:4px 0 0;font-size:13.5px;color:#c9d6d8}
.factor-links a{color:var(--green);text-underline-offset:3px}
.result-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;align-items:center}
.result-note{font-size:13px;color:var(--dim);margin:18px 0 0}

/* CTA */
.cta{margin-top:20px;padding:30px 22px;text-align:center;position:relative;overflow:hidden;border-color:rgba(34,228,255,.25)}
.cta::before{content:"";position:absolute;inset:-40% -10% auto;height:220px;background:radial-gradient(closest-side,rgba(61,255,168,.18),transparent);pointer-events:none}
.cta h2{position:relative;margin:0 0 8px;font-size:clamp(22px,4.4vw,28px);letter-spacing:-.02em;line-height:1.2}
.cta p{position:relative;color:var(--muted);margin:0 auto 22px;max-width:30rem}
.cta .btn{position:relative;white-space:normal;text-align:center}

/* Content */
.content{padding:40px 0 24px;border-top:1px solid var(--border)}
.content .wrap{max-width:780px}
.content h2{font-size:clamp(26px,4.4vw,34px);letter-spacing:-.025em;line-height:1.15;margin:56px 0 14px}
.content h2:first-child{margin-top:24px}
.content h3{font-size:19px;margin:26px 0 8px}
.content p,.content li{color:#c3d0d3}
.content strong{color:var(--text)}
.grid-2{display:grid;gap:14px;margin:22px 0}
@media (min-width:640px){.grid-2{grid-template-columns:1fr 1fr}}
.feature{padding:20px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface)}
.feature .fi{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;background:rgba(61,255,168,.08);border:1px solid rgba(61,255,168,.22);color:var(--green);margin-bottom:12px}
.feature h3{margin:0 0 6px;font-size:17px}
.feature p{margin:0;font-size:15px}
.score-table{width:100%;border-collapse:collapse;font-size:15px;margin:18px 0}
.score-table th,.score-table td{padding:10px 12px;border-bottom:1px solid var(--border);text-align:left}
.score-table th{color:var(--muted);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.06em}
.score-table td:last-child{font-family:var(--mono);white-space:nowrap}
.pos{color:var(--orange)}.neg{color:var(--green)}
.faq details{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);margin:10px 0;transition:border-color .2s}
.faq details[open]{border-color:rgba(61,255,168,.3)}
.faq summary{cursor:pointer;list-style:none;padding:18px 52px 18px 18px;font-weight:650;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:20px;top:50%;width:10px;height:10px;border-right:2px solid var(--green);border-bottom:2px solid var(--green);transform:translateY(-70%) rotate(45deg);transition:transform .25s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{margin:0;padding:0 18px 18px}
.disclaimer{display:flex;gap:12px;margin:40px 0 20px;padding:18px;border-radius:var(--radius-sm);border:1px solid rgba(255,162,74,.3);background:rgba(255,162,74,.06);font-size:14.5px;color:#e5d2bf}
.disclaimer .icon{color:var(--orange);margin-top:2px}
.disclaimer p{margin:0;color:inherit}

/* Simple pages */
.page{padding:56px 0 40px}
.page .wrap{max-width:760px}
.page h1{font-size:clamp(34px,7vw,52px);letter-spacing:-.03em;line-height:1.08;margin:12px 0 16px}
.page h2{font-size:22px;margin:36px 0 10px}
.page p,.page li{color:#c3d0d3}
.page .lede{font-size:19px;color:var(--muted)}
.dl{display:grid;grid-template-columns:minmax(120px,max-content) 1fr;gap:8px 20px;padding:20px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);margin:18px 0}
.dl dt{color:var(--muted);font-size:14px}
.dl dd{margin:0}
.mail{font-family:var(--mono);font-size:clamp(20px,5vw,28px);color:var(--green)}
.big-404{font-family:var(--mono);font-size:clamp(80px,22vw,160px);font-weight:800;line-height:1;margin:0;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 0 30px rgba(61,255,168,.3))}

/* Footer */
.site-footer{margin-top:40px;border-top:1px solid var(--border);padding:36px 0 44px;color:var(--muted);font-size:14.5px;background:linear-gradient(180deg,transparent,rgba(34,228,255,.03))}
.footer-grid{display:grid;gap:24px}
@media (min-width:760px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer h2{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--text);margin:0 0 10px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.site-footer a{color:var(--muted)}
.site-footer a:hover{color:var(--text)}
.site-footer .ha{color:var(--green)}
.footer-bottom{margin-top:28px;padding-top:20px;border-top:1px solid var(--border);font-size:13px;color:var(--dim);display:grid;gap:6px}

.nb{white-space:nowrap}

.page h3{font-size:18px;margin:26px 0 8px}
.page .meta{font-size:14px;color:var(--muted)}
.page a{color:var(--green);text-underline-offset:3px}
.page ul,.page ol{padding-left:22px}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.page .score-table td:last-child{white-space:normal}
.page .faq{margin:12px 0}

/* ===== Refresh 2026-10-25 (Design spec /home/box/agent-data/design/specs/bioage.io.md). Same look; tool above the fold; motion subtle and off under reduced motion. ===== */
:root{--maxw2:1180px;--lift:translateY(-3px)}
:focus-visible{outline:3px solid #34f5a4;outline-offset:3px}
.hero-v2{text-align:left;padding:40px 0 48px;overflow:visible}
.hero-grid{max-width:var(--maxw2);display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:40px;align-items:start}
.hero-v2 h1{font-size:clamp(40px,4.6vw,56px);letter-spacing:-.03em;line-height:1.05;margin:16px 0 14px;max-width:none;font-weight:800}
.hero-v2 p.lede{font-size:17px;max-width:56ch;margin:0 0 16px}
.hero-v2 .hero-meta{justify-content:flex-start;margin:0 0 20px;gap:8px 18px;align-items:center}
.start-link{display:inline-flex;align-items:center;gap:6px;min-height:44px;color:var(--green);font-weight:650;font-size:14px}
.start-link .icon{width:16px;height:16px;color:var(--green)}
.hero-v2 .calc-section{padding:0;scroll-margin-top:80px}
.hero-v2 .calc-card,.hero-v2 .result{border-radius:24px;background:#0c1217;border-color:rgba(255,255,255,.08)}
.hero-v2 .calc-card{padding:22px 24px 18px}
.hero-v2 .calc-head{margin-bottom:10px}
.hero-v2 .progress{height:4px;margin-bottom:8px}
.hero-v2 #progress-bar{transition:width .3s ease}
.hero-v2 .dots{margin-bottom:14px}
.hero-v2 .step .q-num{display:inline-flex;padding:4px 12px;border-radius:999px;background:rgba(52,245,164,.12);color:#34f5a4;margin-bottom:8px}
.hero-v2 .step legend{font-size:22px;font-weight:700;margin-bottom:4px}
.hero-v2 .step .hint{margin-bottom:12px;color:#9fb0b8}
.hero-v2 .age-field input{font-size:28px;min-height:56px;padding:6px 16px}
.hero-v2 .readout{margin-bottom:6px}
.hero-v2 .readout output{font-size:40px}
.hero-v2 .choice{min-height:56px}
.hero-v2 .calc-nav{margin-top:16px;padding-top:14px}
.hero-v2 .calc-nav .btn{min-height:52px}
.hero-v2 .privacy-note{font-size:14px;color:#9fb0b8;justify-content:flex-start}
.choice{transition:border-color .18s,background .18s,box-shadow .18s,transform .18s}
.choice:hover{transform:var(--lift);border-color:rgba(52,245,164,.35)}
.hero-portrait{position:sticky;top:88px;margin:0;border-radius:24px;padding:1px;background:linear-gradient(135deg,#34f5a4,#22e4ff);box-shadow:0 8px 30px rgba(34,228,255,.25)}
.hero-portrait img{display:block;width:100%;height:auto;aspect-ratio:2/3;object-fit:cover;object-position:50% 30%;border-radius:23px;max-height:calc(100vh - 120px)}
.portrait-chip{position:absolute;left:16px;bottom:16px;display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(5,8,11,.6);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);color:var(--text);font-size:14px;font-weight:600}
.portrait-chip .icon{width:16px;height:16px;color:#34f5a4}

/* result */
.hero-v2 .result{padding:28px}
.hero-v2 .calc-section.is-revealed .result,.hero-v2 .result:not([hidden]){box-shadow:0 0 0 1px rgba(52,245,164,.25),0 30px 90px -40px rgba(52,245,164,.45)}
.result{animation-duration:.35s}
.verdict{font-size:24px;font-weight:700;gap:12px}
.verdict .v-good,.verdict .v-bad,.verdict .v-even{width:48px;height:48px;border-radius:50%;background:rgba(var(--tone-rgb),.12);place-items:center;flex:none}
.result.good .v-good,.result.bad .v-bad,.result.even .v-even{display:grid}
.verdict .icon{width:24px;height:24px}
.res-avatar{display:none;width:72px;height:72px;border-radius:50%;object-fit:cover;padding:2px;background:linear-gradient(135deg,#34f5a4,#22e4ff);flex:none}
.res-diff{font-size:17px}
.compare{display:flex;align-items:center;gap:24px;flex-direction:row-reverse;justify-content:flex-end}
.compare .age-tile{background:none;border:0;box-shadow:none;padding:0;text-align:left}
.compare .age-tile.bio .num{font-size:clamp(72px,10vw,112px);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;text-shadow:none;filter:drop-shadow(0 0 20px rgba(52,245,164,.25));margin:4px 0}
.result.bad .compare .age-tile.bio .num{background:linear-gradient(90deg,#ffa24a,#ffc68a);-webkit-background-clip:text;background-clip:text}
.compare .age-tile:not(.bio){padding-left:24px;border-left:1px solid rgba(255,255,255,.12);border-radius:0}
.compare .age-tile:not(.bio) .num{font-size:40px;font-weight:700;color:#9fb0b8}
.result.landed .age-tile.bio .num{animation:none}
.gauge{margin:18px 0 6px;max-width:520px}
.g-track{position:relative;height:12px;border-radius:999px;background:linear-gradient(90deg,rgba(52,245,164,.55),rgba(52,245,164,.15) 50%,rgba(255,162,74,.15) 50%,rgba(255,162,74,.55))}
.g-tick{position:absolute;left:50%;top:-4px;width:2px;height:20px;background:rgba(255,255,255,.6);transform:translateX(-1px)}
.g-dot{position:absolute;top:50%;left:50%;width:20px;height:20px;border-radius:50%;background:#fff;box-shadow:0 0 14px rgba(255,255,255,.7);transform:translate(-50%,-50%);transition:left .9s cubic-bezier(.2,.8,.2,1)}
.g-scale{display:flex;justify-content:space-between;margin-top:6px;font-family:var(--mono);font-size:12px;color:#9fb0b8}
.delta{font-size:18px;padding:6px 14px}
.factor{min-height:52px;grid-template-columns:auto 1fr auto}
.factor .f-ic{grid-row:1;grid-column:1;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:rgba(52,245,164,.12);color:#34f5a4}
.factor.plus .f-ic{background:rgba(255,162,74,.12);color:var(--orange)}
.factor .f-ic svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.factor-main{grid-column:2}.factor-years{grid-column:3;padding:2px 10px;border-radius:999px;background:rgba(255,255,255,.05)}
.factor.minus .factor-years{background:rgba(61,255,168,.1)}.factor.plus .factor-years{background:rgba(255,162,74,.1)}
.factor-tip,.factor-links{grid-column:1/-1}
.result:not([hidden]) .factor{animation:fIn .3s ease both;animation-delay:calc(var(--i,0)*60ms)}
@keyframes fIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.hero-v2 .cta{border:1px solid transparent;background:linear-gradient(#0c1217,#0c1217) padding-box,linear-gradient(135deg,rgba(52,245,164,.6),rgba(34,228,255,.6)) border-box;border-radius:24px}
#btn-retake{border-radius:999px;min-height:44px}

/* lower sections */
.content-v2 .wrap{max-width:var(--maxw2)}
.content-v2 .blk{padding:clamp(40px,6vw,72px) 0;border-bottom:1px solid var(--border)}
.content-v2 .blk:last-of-type{border-bottom:0}
.content-v2 h2,.content-v2 h2:first-child{font-size:clamp(28px,3.2vw,40px);font-weight:700;margin:0 0 14px}
.two-col,.split{display:grid;gap:32px;align-items:start}
@media (min-width:900px){.two-col{grid-template-columns:1fr 1fr}.split{grid-template-columns:5fr 7fr}}
.raised{padding:24px;border-radius:16px;background:#111a21;border:1px solid var(--border);border-left:3px solid #34f5a4}
.raised p{margin:0}
.table-card{padding:8px 16px;border-radius:16px;background:#0c1217}
.table-card .score-table{margin:0}
.table-card .score-table td{padding:13px 12px;font-variant-numeric:tabular-nums}
.grid-3{gap:16px}
@media (min-width:900px){.grid-3{grid-template-columns:repeat(3,1fr)}}
.content-v2 .feature{border-radius:16px;transition:transform .18s,border-color .18s}
.content-v2 .feature:hover{transform:var(--lift);border-color:rgba(52,245,164,.35)}
.content-v2 .feature .fi{width:44px;height:44px;border-radius:50%;background:rgba(52,245,164,.12);border:0;color:#34f5a4}
.content-v2 .feature .fi .icon{width:24px;height:24px}
.content-v2 .feature h3{font-size:20px}.content-v2 .feature p{font-size:16px}
.faq-split{display:grid;gap:24px;align-items:start}
@media (min-width:900px){.faq-split{grid-template-columns:4fr 8fr}.faq-intro{position:sticky;top:96px}}
.content-v2 .faq summary{min-height:64px;display:flex;align-items:center}
.content-v2 .faq details{margin:0 0 10px}
.rv{opacity:0;transform:translateY(12px);transition:opacity .4s ease,transform .4s ease}
.rv.in{opacity:1;transform:none}
.site-footer a{display:inline-flex;align-items:center;min-height:44px}
@media (min-width:760px){.site-footer a{min-height:32px}}

@media (max-width:899px){
  .hero-grid{grid-template-columns:1fr;gap:0}
  .hero-portrait{display:none}
}
@media (max-width:760px){
  .hero-v2{padding:20px 0 32px}
  .hero-v2 h1{font-size:34px;margin:12px 0 10px}
  .hero-v2 p.lede{font-size:16px;margin-bottom:12px}
  .hero-v2 .hero-meta{gap:6px;margin-bottom:14px}
  .hero-v2 .hero-meta span{padding:4px 10px;border:1px solid var(--border);border-radius:999px;font-size:13px}
  .hero-v2 .calc-card{padding:18px 16px 14px}
  .hero-v2 .result{padding:22px 18px}
  .result.good .res-avatar{display:block}
  .compare{flex-direction:column-reverse;align-items:flex-start;gap:8px}
  .compare .age-tile:not(.bio){padding-left:0;border-left:0}
}
@media (prefers-reduced-motion:reduce){
  .choice:hover,.content-v2 .feature:hover{transform:none}
  .g-dot{transition:none}
  .result:not([hidden]) .factor{animation:none}
  .rv{opacity:1;transform:none;transition:none}
  .pulse{animation:none}
}
/* fold fit */
.hero-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:36px}
.hero-v2{padding-top:28px}
.hero-v2 h1{font-size:clamp(40px,4vw,52px);margin:12px 0 12px}
.hero-v2 .hero-meta{margin-bottom:16px}
.hero-v2 .dots{display:none}
.hero-v2 .progress{margin-bottom:14px}
.hero-v2 .step .hint{margin-bottom:10px}
.hero-v2 .calc-nav{margin-top:12px;padding-top:12px}
.brand{min-height:44px}
.nav a{min-height:44px;display:inline-flex;align-items:center}
.nav a.btn-sm{--h:44px}
@media (max-width:760px){
  .hero-v2{padding-top:14px}
  .hero-v2 .eyebrow{font-size:12px;padding:4px 12px}
  .hero-v2 h1{font-size:32px;margin:10px 0 8px}
  .hero-v2 p.lede{line-height:1.5}
  .hero-v2 .hero-meta{margin-bottom:12px}
  .hero-v2 .start-link{min-height:44px}
  .hero-v2 .calc-head{margin-bottom:8px}
  .hero-v2 .step legend{font-size:20px}
  .hero-v2 .step .hint{font-size:14px;margin-bottom:8px}
}
@media (max-width:760px){
  .hero-v2 h1{font-size:30px}
  .hero-v2 .hero-meta{gap:6px}
  .hero-v2 .hero-meta span{font-size:12px;padding:3px 9px;gap:5px}
  .hero-v2 .hero-meta .icon{width:13px;height:13px}
  .hero-v2 .start-link{display:none}
  .hero-v2 .calc-nav{margin-top:10px;padding-top:10px}
}
@media (max-width:899px){.hero-grid{grid-template-columns:1fr;gap:0}}
.site-footer a.brand{min-height:44px}
.hero-v2{overflow-x:clip}.hero-v2 .hero-orb{max-width:100%}
/* fix 2026-10-25: right column stretches to the quiz/result height; portrait sticks inside it */
.hero-side{align-self:stretch;position:relative}
.hero-side .hero-portrait{position:sticky;top:88px}
.hero-portrait picture{display:block}
@media (max-width:899px){.hero-side{display:none}}
body{overflow-x:clip}