/* Shared styles for the feature pages (/workout-tracker, /bloodwork-tracker, ...). The homepage and
   legal pages keep their own inline styles; these pages share one file because there are many of
   them and they share one layout. Tokens match index.html. */
:root{
  --bg:#02070F;--bg-alt:#06111D;--surface:#081827;--card-glass:rgba(10,18,32,0.84);
  --border:rgba(255,255,255,0.08);--border-strong:rgba(36,168,255,0.22);--border-glow:rgba(36,168,255,0.70);
  --text:#FFFFFF;--muted:#C7D4E6;--faint:#8A98AD;
  --accent:#0070FF;--accent-bright:#24A8FF;--accent-deep:#0046B6;--accent-glow:#73C5FF;--accent-text:#B7E6FF;
  --radius-lg:22px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,-apple-system,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(800px 560px at 90% -8%, rgba(0,112,255,0.16), transparent 60%),radial-gradient(760px 600px at 4% 108%, rgba(36,168,255,0.09), transparent 60%),var(--bg)}
a{color:var(--accent-bright)}
a:hover{color:var(--accent-glow)}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px}

.topbar{border-bottom:1px solid var(--border);padding:14px 0;position:sticky;top:0;z-index:20;background:rgba(5,13,26,0.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px}
.brand{font-family:'Orbitron',sans-serif;font-weight:700;font-size:18px;text-transform:uppercase;letter-spacing:.05em;color:var(--text);text-decoration:none;display:inline-flex;align-items:center;gap:10px}
.brand::before{content:"";width:24px;height:24px;flex:none;border-radius:6px;box-shadow:0 0 16px rgba(36,168,255,.45);background:linear-gradient(#fff,#fff) center/11px 2.5px no-repeat,linear-gradient(#fff,#fff) center/2.5px 11px no-repeat,linear-gradient(135deg,var(--accent-bright),var(--accent),var(--accent-deep))}
.brand span{color:var(--accent-bright)}
.top-links{display:flex;align-items:center;gap:22px}
.top-links a{font-weight:600;font-size:13.5px;color:var(--muted);text-decoration:none}
.top-links a:hover{color:var(--accent-bright)}
.top-links a.btn{color:#fff}

.btn{font-family:'Inter',sans-serif;font-weight:600;font-size:14.5px;padding:11px 20px;border-radius:12px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;white-space:nowrap;transition:transform .15s ease,box-shadow .15s ease}
.btn-primary{color:#fff;background:linear-gradient(135deg,var(--accent-bright),var(--accent),var(--accent-deep));box-shadow:0 8px 22px rgba(0,112,255,0.32)}
.btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,112,255,0.42)}
.btn-ghost{color:var(--text);border:1px solid var(--border-strong)}
.btn-ghost:hover{color:var(--text);border-color:var(--border-glow)}

.crumbs{padding:22px 0 0;font-size:13px;color:var(--faint)}
.crumbs a{color:var(--faint);text-decoration:none}
.crumbs a:hover{color:var(--accent-bright)}

.hero{padding:34px 0 56px}
.hero .wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.eyebrow{font-weight:700;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-text);margin-bottom:16px}
h1{font-family:'Orbitron',sans-serif;font-weight:800;font-size:clamp(32px,5.4vw,52px);line-height:1.05;text-transform:uppercase;letter-spacing:.01em;margin-bottom:18px}
h1 span{color:var(--accent-bright)}
.lede{color:var(--muted);font-size:18px;margin-bottom:26px;max-width:600px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.cta-note{color:var(--faint);font-size:13px;margin-top:14px}

.device{width:250px;margin:0 auto;background:linear-gradient(180deg,#0c1928,#04090f);border:1px solid rgba(120,150,190,0.28);border-radius:38px;padding:10px;box-shadow:0 40px 90px rgba(0,0,0,0.6)}
.device .screen{border-radius:29px;overflow:hidden;background:#02070F}
.device img{width:100%;display:block}

section.block{padding:48px 0;border-top:1px solid var(--border)}
h2{font-family:'Orbitron',sans-serif;font-weight:700;font-size:clamp(22px,3.2vw,30px);text-transform:uppercase;letter-spacing:.01em;line-height:1.1;margin-bottom:14px}
.sub{color:var(--muted);font-size:16.5px;max-width:700px;margin-bottom:30px}
h3{font-size:17px;font-weight:700;margin-bottom:8px}
p{color:var(--muted);margin-bottom:14px}
strong{color:var(--text)}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card-glass);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px 22px}
.card p{font-size:14.5px;margin:0}
.tag{display:inline-block;margin-top:12px;font-size:10.5px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--accent-text)}

.checks{list-style:none;display:flex;flex-direction:column;gap:11px;margin:0 0 18px}
.checks li{position:relative;padding-left:26px;color:var(--muted)}
.checks li::before{content:"";position:absolute;left:2px;top:8px;width:11px;height:6px;border-left:2px solid var(--accent-bright);border-bottom:2px solid var(--accent-bright);transform:rotate(-45deg)}

.callout{background:var(--card-glass);border:1px solid var(--border-strong);border-radius:16px;padding:20px 22px;margin:6px 0 0}
.callout p:last-child{margin-bottom:0}

.faq details{border-bottom:1px solid var(--border);padding:16px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:16px;color:var(--text);list-style:none;position:relative;padding-right:28px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:-2px;font-size:22px;color:var(--accent-bright)}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin:12px 0 0}

.related{display:flex;flex-wrap:wrap;gap:10px}
.related a{font-weight:600;font-size:13.5px;text-decoration:none;padding:9px 15px;border-radius:10px;border:1px solid var(--border-strong);color:var(--muted)}
.related a:hover{color:var(--accent-bright);border-color:var(--border-glow)}

.disclaimer{font-size:13.5px;color:var(--faint)}

footer{border-top:1px solid var(--border);padding:32px 0 56px;font-size:13px;color:var(--faint);line-height:1.9}
footer a{color:var(--faint)}
footer a:hover{color:var(--accent-bright)}

@media (max-width:820px){
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .grid,.grid.two{grid-template-columns:1fr}
  .top-links a:not(.btn){display:none}
}

a.card{color:var(--text);transition:border-color .18s ease}
a.card:hover{color:var(--text);border-color:var(--border-strong)}

/* Apple Watch screenshots (422x514) in a simple watch-shaped frame. */
.watch{width:210px;margin:0 auto;background:linear-gradient(180deg,#1a2230,#0a0e15);border:1px solid rgba(120,150,190,0.30);border-radius:54px;padding:14px;box-shadow:0 30px 70px rgba(0,0,0,0.55)}
.watch .face{border-radius:40px;overflow:hidden;background:#000}
.watch img{width:100%;display:block}
.watch.sm{width:160px;border-radius:44px;padding:11px}
.watch.sm .face{border-radius:33px}
figure{margin:0}
.watch-row{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;text-align:center}
.watch-row figcaption{color:var(--muted);font-size:14px;margin-top:14px}
@media (max-width:820px){.watch-row{grid-template-columns:repeat(2,1fr)}}

/* Comparison tables (/apex-stacked-vs-*). */
.table-scroll{overflow-x:auto;margin:0 0 18px}
table.compare{width:100%;border-collapse:collapse;font-size:14.5px;min-width:560px}
table.compare th,table.compare td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);color:var(--muted);vertical-align:top}
table.compare thead th{color:var(--text);font-weight:700;background:var(--card-glass)}
table.compare tbody th{color:var(--text);font-weight:600;width:28%}
.sources{font-size:13px;color:var(--faint)}
.sources li{margin-bottom:6px}
.sources a{color:var(--faint)}

/* Guides (/guides/*): long-form articles. */
.article{max-width:740px;margin:0 auto;padding:0 24px}
.article header{padding:30px 0 10px}
.article .meta{color:var(--faint);font-size:13.5px;margin-bottom:24px}
.article h1{font-size:clamp(30px,4.6vw,44px)}
.article .answer{background:var(--card-glass);border:1px solid var(--border-strong);border-radius:16px;padding:18px 22px;margin:8px 0 30px}
.article .answer p{margin:0;color:var(--text)}
.article h2{font-size:clamp(20px,2.6vw,25px);margin:40px 0 12px}
.article h3{margin:26px 0 8px}
.article ul,.article ol{margin:0 0 16px 22px;color:var(--muted)}
.article li{margin-bottom:8px}
.article figure{margin:24px 0}
.article figcaption{color:var(--faint);font-size:13px;margin-top:8px;text-align:center}
.article .device{width:240px}
.article .sources{margin-left:18px}