/* openLifetime shared theme — extracted from index.html so every page shares one look */
:root{--primary:#2a7;--accent:#4a9;--bg:#f4f6f8;--card:#fff;--text:#222}
*{box-sizing:border-box}
html{overflow-y:scroll;scrollbar-gutter:stable;min-height:100%;background:linear-gradient(180deg,#f4f6f8 0%,#e8f0fe 100%) fixed}
body{font-family:system-ui,sans-serif;color:var(--text);max-width:960px;margin:0 auto;padding:1.5rem 1rem 2rem;line-height:1.5;min-height:100vh;display:flex;flex-direction:column}
h1{font-size:3rem;margin:0 0 .25rem 0;letter-spacing:-.03em;color:var(--primary);line-height:1.1;padding-top:0;padding-left:0;padding-right:0;position:relative;top:0}
h1{font-size:3rem;margin-bottom:.25rem;letter-spacing:-.03em;color:var(--primary);line-height:1.1;padding-bottom:15px}
h1 .tagline{font-weight:400;color:#555;font-size:1.1rem}
.subtitle{font-size:1.25rem;color:#555;margin-bottom:2.5rem;max-width:600px}
.hero{background:var(--card);border-radius:20px;padding:2.5rem;box-shadow:0 20px 60px rgba(42,119,170,.12);margin-bottom:3rem;border:1px solid rgba(42,119,170,.08)}
.hero h2{font-size:1.4rem;margin-top:0;color:var(--primary)}
.cta{display:inline-block;white-space:nowrap;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;padding:.9rem 1.8rem;border-radius:50px;text-decoration:none;font-weight:600;box-shadow:0 6px 20px rgba(42,119,170,.3);transition:transform .15s ease}
.cta:hover{transform:translateY(-3px)}
/* Hero CTA row — flex with uniform gap so wrapped rows never touch; centered as a group on wide screens */
.cta-row{display:flex;flex-wrap:wrap;justify-content:center;gap:.7rem;margin-top:.25rem}
.cta-secondary{background:linear-gradient(135deg,#555,#777);box-shadow:0 6px 20px rgba(0,0,0,.18)}
/* Mobile — stack CTAs full-width for easy tapping */
@media (max-width: 640px){
.cta-row .cta{width:100%;text-align:center}
}
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem;margin-top:2rem}
.feature{background:var(--card);border-radius:14px;padding:1.5rem;box-shadow:0 4px 12px rgba(0,0,0,.06);border-top:4px solid var(--primary)}
.feature h3{margin-top:0;font-size:1.1rem;color:var(--primary)}
/* corner nav (shared across pages) */
.nav-corners{position:fixed;top:0;right:0;display:flex;gap:.5rem;padding:1rem;pointer-events:none;z-index:10}
.nav-corners a{pointer-events:auto;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border:1px solid rgba(42,119,170,.15);border-radius:50px;padding:.5rem 1rem;display:flex;align-items:center;gap:.4rem;text-decoration:none;color:var(--primary);font-weight:700;font-size:.9rem;box-shadow:0 2px 8px rgba(0,0,0,.08);transition:transform .15s ease,background .15s ease}
.nav-corners a:hover{transform:scale(1.05);background:#fff}
.nav-corners a .nav-icon{font-size:1rem}
/* card grid + detail panel (cards.html) */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:1rem}
.item{border:none;border-radius:12px;padding:1rem .75rem;min-height:76px;display:flex;flex-direction:row;align-items:center;justify-content:center;gap:.35rem;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;cursor:pointer;text-align:center;font-weight:600;font-size:.95rem;line-height:1.2;box-shadow:0 4px 12px rgba(42,119,170,.25);transition:transform .15s ease,box-shadow .15s ease,opacity .3s ease,filter .3s ease}
.item-faded{opacity:.28;filter:grayscale(.6);pointer-events:none}
.item:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(42,119,170,.35);border-color:rgba(255,255,255,.3)}
.item.selected{outline:3px solid var(--primary);outline-offset:2px}
.item.tag-highlighted{box-shadow:0 0 16px 4px rgba(255,160,60,.5),0 0 32px 8px rgba(255,140,40,.2);outline:2px solid #ff9040;outline-offset:2px;animation:tagPulse 1.2s ease-in-out infinite}
@keyframes tagPulse{0%,100%{box-shadow:0 0 16px 4px rgba(255,160,60,.5),0 0 32px 8px rgba(255,140,40,.2)}50%{box-shadow:0 0 22px 6px rgba(255,160,60,.7),0 0 44px 12px rgba(255,140,40,.3)}}
.card-section{position:relative;background:var(--card);border-radius:14px;padding:1.5rem;margin-top:1.5rem;margin-bottom:2rem;box-shadow:0 4px 12px rgba(0,0,0,.06);border-top:4px solid var(--primary);animation:fadeIn .3s ease;scroll-margin-top:80px}
.card-section.active{display:block}
.card-updated{position:absolute;top:.75rem;right:1rem;font-size:.72rem;color:#999;letter-spacing:.02em}
.card-section h2{display:inline-block;margin-top:0;margin-bottom:.4rem;color:#333;font-size:1.6rem;letter-spacing:-.02em;padding:.15rem .7rem .2rem;background:rgba(42,119,170,.07);border-left:3px solid var(--primary);border-radius:8px}
.card-summary{font-size:1.05rem;color:#444}
.card-badge{display:inline-block;background:rgba(42,119,170,.1);color:var(--primary);font-size:.75rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;padding:.25rem .6rem;border-radius:50px;margin-bottom:.75rem}
.tag-row{display:flex;flex-wrap:wrap;gap:.4rem;margin-bottom:.9rem}
.tag-pill{border:none;border-radius:50px;padding:.3rem .75rem;font-size:.78rem;font-weight:600;background:rgba(42,119,170,.1);color:var(--primary);cursor:pointer;transition:background .15s ease,transform .1s ease,box-shadow .15s ease}
.tag-pill:hover{background:rgba(42,119,170,.22);transform:translateY(-1px)}
/* Homepage card-reading tutorial */
.panel{background:var(--card);border-radius:20px;padding:2.5rem;box-shadow:0 20px 60px rgba(42,119,170,.12);margin:3rem 0;border:1px solid rgba(42,119,170,.08)}
.tutorial{margin:0}
.tutorial > h2{font-size:1.4rem;color:var(--primary);margin-top:0}
.tutorial-card{position:relative;max-width:640px}
.annot{display:inline-block;margin-left:.5rem;font-size:.72rem;font-weight:600;color:#fff;background:#ff9040;padding:.15rem .5rem;border-radius:50px;vertical-align:middle;white-space:nowrap}
.annot::before{content:"\2190 ";font-weight:700}
.tutorial-card .tag-pill{cursor:default}
.tag-pill.tag-active{background:var(--primary);color:#fff;box-shadow:0 0 0 2px rgba(42,119,170,.35),0 2px 8px rgba(42,119,170,.3)}
.tag-clear{border:none;border-radius:50px;padding:.3rem .8rem;font-size:.78rem;font-weight:600;background:#fdecec;color:#c0392b;cursor:pointer;margin-left:auto;transition:background .15s ease,transform .1s ease}
.tag-clear:hover{background:#f9d6d4;transform:translateY(-1px)}
.tier-hidden{display:none}
.tag-bar{display:flex;flex-wrap:wrap;gap:.45rem;padding:.85rem 1rem;background:var(--card);border-radius:12px;border:1px solid rgba(0,0,0,.06);box-shadow:0 2px 6px rgba(0,0,0,.04);margin-bottom:1.75rem}
.card-block{margin-bottom:1rem}
.card-block h3{font-size:1.05rem;color:var(--primary);margin-bottom:.5rem;border-bottom:1px solid rgba(42,119,170,.12);padding-bottom:.3rem}
.card-block p{font-size:.95rem;color:#333;line-height:1.55}
.card-block ul,.card-block ol{padding-left:1.2rem;margin:.3rem 0}
.card-block ol li::marker{color:var(--primary);font-weight:700}
.card-block li{margin-bottom:.4rem;font-size:.95rem;color:#333}
/* Caution block — amber treatment so safety info stands out */
.caution-block{background:#fff8e6;border:1px solid #ffe08a;border-radius:8px;padding:.75rem .9rem;margin-bottom:1rem}
.caution-block h3{color:#8a6d00;border-bottom-color:rgba(255,193,7,.4)}
.caution-block li{color:#664d03}
.dose-range{font-size:1.35rem;font-weight:700;color:var(--primary);margin:.2rem 0 .3rem;letter-spacing:-.01em}
.dose-range sup a{font-size:.65rem;font-weight:400;color:var(--primary);text-decoration:none;margin-left:.15rem;padding:.1rem .25rem;background:rgba(42,119,170,.08);border-radius:4px;transition:background .15s ease}
.dose-range sup a:hover{background:rgba(42,119,170,.2)}
.dose-calc-btn{display:inline-block;font-size:.8rem;font-weight:600;color:#fff;text-decoration:none;padding:.25rem .7rem;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:50px;margin-left:.3rem;transition:transform .12s ease,box-shadow .12s ease;box-shadow:0 2px 8px rgba(42,119,170,.3)}
.dose-calc-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(42,119,170,.45)}
.dose-note{font-size:.85rem;color:#777;margin:.4rem 0 0}
.card-studies a{color:var(--primary);text-decoration:none}
.card-studies a:hover{text-decoration:underline}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
/* Jump-to-top button — bottom center, appears on scroll */
.jump-top-btn{position:fixed;bottom:1.5rem;left:50%;transform:translateX(-50%) translateY(20px);padding:.55rem 1.1rem;border-radius:50px;border:none;background:rgba(42,119,170,.85);color:#fff;font-size:.8rem;font-weight:600;letter-spacing:.04em;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:.35rem;box-shadow:0 4px 16px rgba(42,119,170,.35);opacity:0;pointer-events:none;transition:opacity .25s ease,transform .25s ease;z-index:100}
.jump-top-btn.visible{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.jump-top-btn:hover{background:var(--primary);box-shadow:0 6px 20px rgba(42,119,170,.5);transform:translateX(-50%) translateY(-2px)}
.jump-top-btn .jt-arrow{font-size:1rem;line-height:1}
/* brand title link + footer */
.brand-link{color:var(--primary);text-decoration:none;transition:opacity .15s ease}
.brand-link:hover{opacity:.75}
.site-footer{margin-top:auto;padding-top:1rem;border-top:1px solid rgba(42,119,170,.15);display:flex;gap:1.25rem;font-size:.85rem;color:#777;flex-wrap:wrap}
.site-footer .copyright{opacity:.8}
.site-footer a{color:#777;text-decoration:none}
.site-footer a:hover{color:var(--primary);text-decoration:underline}
/* Professional header bar */
.site-header-bar{position:fixed;top:0;left:0;right:0;height:56px;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(42,119,170,.1);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;z-index:20;margin-bottom:15px}
.site-header-bar .brand{font-weight:700;color:var(--primary);font-size:1.1rem;text-decoration:none;letter-spacing:-.02em}
.site-header-bar .brand:hover{opacity:.8}
.site-header-bar .nav-links{display:flex;gap:.75rem}
.site-header-bar .nav-links a{font-size:.85rem;color:#555;text-decoration:none;padding:.25rem .5rem;border-radius:6px;transition:background .15s}
.site-header-bar .nav-links a:hover{background:rgba(42,119,170,.08);color:var(--primary)}
/* Tier grouping on cards page */
.tier-section{margin-top:2.5rem}
.tier-title{font-size:1.5rem;color:var(--primary);letter-spacing:-.02em;margin-bottom:.25rem;border-bottom:2px solid rgba(42,119,170,.2);padding-bottom:.4rem}
.tier-desc{font-size:.95rem;font-weight:500;color:#555;margin-bottom:1rem}