:root{
  --bg:#f7fafc;
  --paper:#ffffff;
  --ink:#0b2545;
  --muted:#4a5568;
  --brand:#2563eb;
  --brand-dark:#1e40af;
  --accent:#60a5fa;
  --good:#16a34a;
  --max:720px;
  --radius:18px;
  --shadow:0 10px 30px rgba(11,37,69,.08);
  --footer-h:0px;
}
html,body{height:100%;}
html,body{padding-bottom:var(--footer-h);}
body{
  margin:0; font-family: -apple-system, BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";
  color:var(--ink); background:var(--bg); line-height:1.5; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  display:flex; flex-direction:column; min-height:100vh;
}
.wrap{max-width:var(--max); margin:0 auto; padding:clamp(14px,3.5vw,22px);}
.card{background:var(--paper); border-radius:var(--radius); box-shadow:var(--shadow); padding:clamp(16px,4.5vw,24px);}
.label{display:inline-flex; align-items:center; gap:8px; font-size:12px; letter-spacing:.02em; color:#334155; background:#e2e8f0; padding:6px 10px; border-radius:999px; font-weight:600;}
.label svg{width:14px; height:14px;}
h1{font-size:clamp(22px,5.8vw,34px); line-height:1.15; margin:10px 0 6px;}
.sub{color:var(--muted); font-size:clamp(14px,3.8vw,18px); margin-bottom:14px;}
.hero{position:relative; overflow:hidden; border-radius:16px; height:min(44vw,260px); margin:14px 0 10px; background:#e5e7eb;}
.hero img{width:100%; height:100%; object-fit:cover; display:block;}
.byline{font-size:13px; color:#64748b; margin:6px 0 14px; display:inline-flex; align-items:center; gap:6px; flex-wrap:wrap}
.by-clock{display:inline-flex;align-items:center;gap:6px}
p{font-size:clamp(15px,4.2vw,18px); color:#0f172a; margin:10px 0 0;}
.bullet{display:flex; gap:12px; align-items:flex-start;}
.bullet + .bullet{margin-top:10px;}
.bullet p{margin:0;}
.bullet svg{flex:0 0 18px; width:18px; height:18px; margin-top:2px; stroke-linecap:round; stroke-linejoin:round;}
.cta{display:block; text-align:center; margin:16px 0 8px; text-decoration:none; font-weight:800; letter-spacing:.2px; padding:14px 18px; border-radius:14px; background:linear-gradient(180deg,var(--brand),var(--brand-dark)); color:white; box-shadow:0 8px 18px rgba(37,99,235,.35);}
.cta:active{transform:translateY(1px);}
.cta.small{font-weight:700; padding:12px 14px; border-radius:12px;}
.note{font-size:12px; color:#475569;}
.center{text-align:center;}
.hr{height:1px; background:linear-gradient(90deg,transparent,#cbd5e1,transparent); margin:16px 0;}
.fineprint{font-size:11px; color:#64748b;}

/* Ad bar */
.ad-bar{position:sticky; top:0; z-index:50; background:#eaf2ff; color:#0b2545; border-bottom:1px solid #bfdbfe; padding:10px 12px; font-size:12px; text-align:center; transition:transform .28s ease, opacity .28s ease; box-shadow:0 2px 8px rgba(2,6,23,.06);}
.ad-hidden{transform:translateY(-100%); opacity:0;}
.ad-inner{display:inline-flex; align-items:center; gap:8px;}
.ad-chip{display:inline-block; padding:2px 8px; border-radius:999px; background:#dbeafe; color:#1e3a8a; font-weight:700; letter-spacing:.2px;}
.ad-by{opacity:.9}

/* Footer */
footer.site-footer{width:100%; margin:0; margin-top:auto; background:var(--paper); border-top:1px solid #e2e8f0;}
.footer-card{max-width:var(--max); margin:0 auto; padding:14px 16px; border-radius:0; box-shadow:none;}
.footer-nav{display:flex; flex-wrap:wrap; gap:12px; font-size:13px; margin:6px 0 10px; justify-content:center}
.footer-nav a{color:#334155; text-decoration:none;}
.footer-nav a:active{opacity:.8}
.copyright{font-size:12px; color:#94a3b8; text-align:center}

/* Quiz */
#quiz-step{display:none; background:var(--paper);}
#article-step, #quiz-step{flex:1 0 auto; min-width:0;}
#q-body{min-height:220px;}
.quiz-q{margin:8px 0 0;}
.quiz-q h3{margin:0 0 8px; font-size:clamp(18px,4.8vw,22px);}
.quiz-answers{display:grid; grid-template-columns:1fr; gap:10px;}
.quiz-btn{display:block; text-align:left; border:1px solid #e2e8f0; background:#f8fafc; border-radius:12px; padding:12px; font-weight:600; color:#0f172a; text-decoration:none; transition:background .18s ease, border-color .18s ease}
.quiz-btn:active{transform:translateY(1px)}
.quiz-btn.selected{background:#eaf2ff;border-color:#60a5fa}
.muted{color:#64748b}

/* Progress bar */
.progress{height:6px;background:#e2e8f0;border-radius:999px;overflow:hidden;margin:8px 0 16px;}
.progress-fill{height:100%;width:0%;background:linear-gradient(90deg,#60a5fa,#2563eb);}

/* Loading */
#q-loading{display:none; text-align:center; padding:20px 0;}
.spinner{width:36px;height:36px;border-radius:50%;border:4px solid #c7d2fe;border-top-color:#4338ca;animation:spin 1s linear infinite; margin:10px auto 8px;}
@keyframes spin{to{transform:rotate(360deg)}}

/* Results */
#q-explain{font-size:clamp(14px,4vw,17px); text-align:center; margin-top:10px;}
.why-box{background:#eef2ff;border-left:4px solid #6366f1;padding:10px 12px;border-radius:10px;margin:10px 0;display:block;color:#111827}
.why-box strong{display:block;font-size:13px;color:#374151;margin-bottom:4px}
.why-box span{display:block;font-size:14px}
.todo{list-style:none;}
.todo li{font-size:14px; display:flex; gap:10px; align-items:flex-start; margin:8px 0 0;}
.todo li::before{content:""; width:16px; height:16px; border-radius:4px; border:2px solid #94a3b8; margin-top:2px; flex:0 0 16px;}
.action-box{background:#ecfdf5;border-left:4px solid #10b981;padding:10px 12px;border-radius:10px;margin:12px 0 6px;color:#065f46}
.action-box strong{display:block;font-size:13px;color:#065f46;margin-bottom:4px}
.action-box span{display:block;font-size:14px;color:#0f766e}
.steps{display:grid; gap:12px; margin:10px 0}
.step{background:#fff; border:1px solid #e5e7eb; border-radius:14px; padding:12px; display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:flex-start}
.num{width:28px; height:28px; border-radius:50%; display:grid; place-items:center; font-weight:800; background:#eaf2ff; color:#1e3a8a}
.step .title{margin:0 0 4px; font-weight:800}
.step .why{background:#eef2ff;border-left:4px solid #6366f1;padding:8px 10px;border-radius:10px;margin:8px 0 0;display:block;color:#111827;font-size:14px}

/* Touch comfort + motion prefs */
button, a{ -webkit-tap-highlight-color: rgba(0,0,0,0); }
@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto; transition:none !important; animation:none !important}
}