/* Interactive article layout + widgets. Pairs with templates/article.php and
   assets/js/article.js. Brand palette matches landing.css / blog-post. */
:root{
  --ar-pink:#e00173; --ar-pink-dk:#9d174d; --ar-pink-lt:#fce7f3; --ar-pink-bd:#fbcfe8;
  --ar-ink:#0f0f0f; --ar-ink-2:#27272a; --ar-ink-3:#6b7280; --ar-line:#ececf0;
  --ar-ok:#15803d; --ar-ok-lt:#dcfce7; --ar-bad:#b91c1c; --ar-bad-lt:#fee2e2;
  --ar-r:14px;
}
.ar-page{background:#fff}

/* reading progress */
.ar-prog{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;background:transparent}
.ar-prog span{display:block;height:100%;width:0;background:var(--ar-pink);transition:width .1s linear}

/* hero */
.ar{max-width:1120px;margin:0 auto;padding:0 20px}
.ar-hero{max-width:780px;margin:0 auto;padding:40px 0 8px}
.ar-cat{font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;color:var(--ar-pink);margin-bottom:10px}
.ar-h1{font-size:clamp(27px,4.2vw,42px);line-height:1.2;font-weight:700;color:var(--ar-ink);margin:0 0 14px}
.ar-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ar-ink-3);margin-bottom:14px}
.ar-av{width:28px;height:28px;border-radius:50%;background:var(--ar-pink-lt);color:var(--ar-pink);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:12px}
.ar-alt{display:inline-block;font-size:14px;font-weight:600;color:var(--ar-pink-dk);background:var(--ar-pink-lt);border:1px solid var(--ar-pink-bd);border-radius:999px;padding:6px 14px;margin-bottom:18px;text-decoration:none}
.ar-img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;border-radius:var(--ar-r);background:var(--ar-pink-lt)}

/* quick answer — the featured-snippet target */
.ar-quick{max-width:780px;margin:22px auto 8px;background:linear-gradient(180deg,#fff7fb,#fff);border:1px solid var(--ar-pink-bd);border-left:4px solid var(--ar-pink);border-radius:var(--ar-r);padding:18px 22px}
.ar-quick-k{font-size:12px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--ar-pink);margin-bottom:6px}
.ar-quick p{margin:0 0 8px;font-size:17px;line-height:1.7;color:var(--ar-ink-2)}
.ar-quick ul{margin:6px 0 0;padding-left:20px}
.ar-quick li{margin-bottom:4px;font-size:16px;line-height:1.6;color:var(--ar-ink-2)}

/* two-column: sticky outline + body */
.ar-wrap{display:grid;grid-template-columns:240px minmax(0,780px);gap:44px;justify-content:center;margin-top:28px}
.ar-toc{position:sticky;top:84px;align-self:start;max-height:calc(100vh - 110px);overflow:auto;font-size:14px}
.ar-toc details{border:1px solid var(--ar-line);border-radius:12px;padding:12px 14px}
.ar-toc-h{font-weight:700;color:var(--ar-ink);cursor:pointer;list-style:none;font-size:13px;letter-spacing:.4px;text-transform:uppercase}
.ar-toc-h::-webkit-details-marker{display:none}
.ar-toc ol{margin:10px 0 0;padding-left:18px}
.ar-toc li{margin:0 0 8px;line-height:1.4}
.ar-toc a{color:var(--ar-ink-3);text-decoration:none}
.ar-toc a:hover,.ar-toc a.on{color:var(--ar-pink);font-weight:600}

.ar-body{font-size:17px;line-height:1.8;color:var(--ar-ink-2);min-width:0}
.ar-body h2{font-size:clamp(22px,3vw,27px);line-height:1.3;font-weight:700;color:var(--ar-ink);margin:44px 0 12px;scroll-margin-top:84px}
.ar-body h3{font-size:19px;font-weight:600;color:var(--ar-ink);margin:26px 0 8px}
.ar-body p{margin:0 0 16px}
.ar-body ul,.ar-body ol{margin:0 0 16px;padding-left:24px}
.ar-body li{margin-bottom:7px}
.ar-body a{color:var(--ar-pink);text-decoration:underline;text-underline-offset:2px}
.ar-body strong{color:var(--ar-ink)}

/* table */
.ar-table{width:100%;overflow-x:auto;margin:0 0 20px;border:1px solid var(--ar-line);border-radius:12px}
.ar-table table{width:100%;border-collapse:collapse;font-size:15px;min-width:520px}
.ar-table th{background:#fafafa;text-align:left;font-weight:600;color:var(--ar-ink)}
.ar-table th,.ar-table td{padding:10px 12px;border-bottom:1px solid var(--ar-line);vertical-align:top}
.ar-table tr:last-child td{border-bottom:0}

/* numbered steps */
.ar-steps{list-style:none;padding:0;margin:0 0 20px;counter-reset:st}
.ar-steps>li{position:relative;padding:14px 16px 14px 60px;margin-bottom:10px;border:1px solid var(--ar-line);border-radius:12px;counter-increment:st}
.ar-steps>li::before{content:counter(st);position:absolute;left:16px;top:14px;width:30px;height:30px;border-radius:50%;background:var(--ar-pink);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:14px}
.ar-steps>li strong{display:block;margin-bottom:2px}

/* callouts */
.ar-note{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:14px 18px;margin:0 0 20px;font-size:16px}
.ar-note.warn{background:#fffbeb;border-color:#fde68a}
.ar-note p:last-child{margin-bottom:0}
.ar-cta-inline{display:flex;gap:14px;align-items:center;background:var(--ar-pink-lt);border:1px solid var(--ar-pink-bd);border-radius:14px;padding:14px 18px;margin:0 0 22px;text-decoration:none!important;color:var(--ar-ink)!important}
.ar-cta-inline b{color:var(--ar-pink-dk)}
.ar-cta-inline span{font-size:15px;line-height:1.5}

/* ---------- widgets (shared frame) ---------- */
.ia-w{border:1px solid var(--ar-pink-bd);border-radius:16px;padding:20px 22px;margin:8px 0 26px;background:#fff;box-shadow:0 1px 0 rgba(0,0,0,.02)}
.ia-w-k{font-size:12px;font-weight:700;letter-spacing:.8px;text-transform:uppercase;color:var(--ar-pink);margin-bottom:4px}
.ia-w-t{font-size:19px;font-weight:700;color:var(--ar-ink);margin:0 0 14px;line-height:1.35}
.ia-btn{display:inline-flex;align-items:center;gap:6px;border:0;background:var(--ar-pink);color:#fff;font:inherit;font-weight:600;font-size:15px;padding:10px 18px;border-radius:999px;cursor:pointer}
.ia-btn:hover{background:#c20064}
.ia-btn.ghost{background:#fff;color:var(--ar-pink-dk);border:1px solid var(--ar-pink-bd)}

/* quiz */
.ia-quiz ol{list-style:none;padding:0;margin:0}
.ia-q{padding:14px 0;border-top:1px dashed var(--ar-line)}
.ia-q:first-child{border-top:0;padding-top:0}
.ia-q-text{font-weight:600;color:var(--ar-ink);margin:0 0 10px}
.ia-opts{display:flex;flex-wrap:wrap;gap:8px}
.ia-opts button{font:inherit;font-size:15px;border:1px solid #d4d4d8;background:#fff;color:var(--ar-ink-2);border-radius:10px;padding:9px 14px;cursor:pointer;text-align:left}
.ia-opts button:hover:not(:disabled){border-color:var(--ar-pink)}
.ia-opts button:disabled{cursor:default}
.ia-opts button.ok{background:var(--ar-ok-lt);border-color:var(--ar-ok);color:var(--ar-ok);font-weight:600}
.ia-opts button.bad{background:var(--ar-bad-lt);border-color:var(--ar-bad);color:var(--ar-bad)}
.ia-q-why{margin:10px 0 0;font-size:15px;line-height:1.65;color:var(--ar-ink-2);background:#fafafa;border-radius:10px;padding:10px 12px}
.ia-quiz-result{margin-top:16px;padding:14px 16px;border-radius:12px;background:var(--ar-pink-lt);border:1px solid var(--ar-pink-bd);font-size:16px}
.ia-quiz-result b{font-size:20px;color:var(--ar-pink-dk)}

/* checklist */
.ia-check label{display:flex;gap:10px;align-items:flex-start;padding:10px 12px;border:1px solid var(--ar-line);border-radius:10px;margin-bottom:8px;cursor:pointer;font-size:16px;line-height:1.5}
.ia-check label:hover{border-color:var(--ar-pink-bd)}
.ia-check input{margin-top:4px;accent-color:var(--ar-pink);width:18px;height:18px;flex:0 0 auto}
.ia-meter{height:10px;border-radius:999px;background:#f1f1f4;overflow:hidden;margin:14px 0 8px}
.ia-meter span{display:block;height:100%;width:0;background:var(--ar-pink);transition:width .3s ease}
.ia-check-result{font-size:15px;color:var(--ar-ink-2);margin:0;min-height:1.5em}

/* myth / fact cards */
.ia-flips{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:0 0 26px}
.ia-flip{font:inherit;text-align:left;border:1px solid var(--ar-line);background:#fff;border-radius:14px;padding:16px;cursor:pointer;min-height:140px;display:flex;flex-direction:column;gap:6px;color:var(--ar-ink-2)}
.ia-flip:hover{border-color:var(--ar-pink-bd)}
.ia-flip .f-tag{font-size:11px;font-weight:700;letter-spacing:.8px;text-transform:uppercase}
.ia-flip .f-front .f-tag{color:var(--ar-bad)}
.ia-flip .f-back .f-tag{color:var(--ar-ok)}
.ia-flip .f-back{display:none}
.ia-flip.on{border-color:var(--ar-ok);background:#f7fdf9}
.ia-flip.on .f-front{display:none}
.ia-flip.on .f-back{display:flex;flex-direction:column;gap:6px}
.ia-flip .f-hint{font-size:12px;color:var(--ar-ink-3);margin-top:auto}
html:not(.js) .ia-flip .f-back{display:flex;flex-direction:column;gap:6px;margin-top:8px}

/* tabs */
.ia-tabs [role=tablist]{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.ia-tabs [role=tab]{font:inherit;font-size:14px;border:1px solid var(--ar-line);background:#fff;border-radius:999px;padding:7px 13px;cursor:pointer;color:var(--ar-ink-2)}
.ia-tabs [role=tab][aria-selected=true]{background:var(--ar-pink);border-color:var(--ar-pink);color:#fff;font-weight:600}
.ia-tabs [role=tabpanel]{display:none}
.ia-tabs [role=tabpanel].on{display:block}
html:not(.js) .ia-tabs [role=tabpanel]{display:block;margin-bottom:14px}
.ia-tabs [role=tabpanel] h3{margin-top:0}

/* calculator */
.ia-calc fieldset{border:0;padding:0;margin:0 0 14px}
.ia-calc legend{font-weight:600;color:var(--ar-ink);margin-bottom:8px;font-size:16px}
.ia-calc .opts{display:flex;flex-wrap:wrap;gap:8px}
.ia-calc .opts label{border:1px solid #d4d4d8;border-radius:10px;padding:8px 12px;cursor:pointer;font-size:15px}
.ia-calc .opts input{position:absolute;opacity:0;pointer-events:none}
.ia-calc .opts label:has(input:checked){background:var(--ar-pink-lt);border-color:var(--ar-pink);color:var(--ar-pink-dk);font-weight:600}
.ia-calc-result{margin-top:16px;padding:16px;border-radius:12px;background:var(--ar-pink-lt);border:1px solid var(--ar-pink-bd)}
.ia-calc-result .score{font-size:30px;font-weight:700;color:var(--ar-pink-dk);line-height:1}
.ia-calc-result ul{margin:10px 0 0;padding-left:20px}

/* diagram */
.ar-fig{margin:0 0 24px}
.ar-fig svg{width:100%;height:auto;display:block}
.ar-fig figcaption{font-size:13px;color:var(--ar-ink-3);margin-top:6px;text-align:center}

/* FAQ */
.ar-faq{margin-top:10px}
.ar-faq-i{border:1px solid var(--ar-line);border-radius:12px;margin-bottom:8px;background:#fff}
.ar-faq-i summary{cursor:pointer;padding:14px 44px 14px 16px;font-weight:600;color:var(--ar-ink);position:relative;list-style:none;font-size:16px;line-height:1.5}
.ar-faq-i summary::-webkit-details-marker{display:none}
.ar-faq-i summary::after{content:"+";position:absolute;right:16px;top:12px;font-size:22px;color:var(--ar-pink);font-weight:400}
.ar-faq-i[open] summary::after{content:"\2212"}
.ar-faq-i>div{padding:0 16px 14px}
.ar-faq-i>div p{margin:0;font-size:16px}

/* products */
.ar-prod{margin:34px 0 10px}
.ar-prod-h,.ar-src-h{font-size:22px!important;margin-top:0!important}
.ar-prod-g{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.ar-prod-c{display:flex;flex-direction:column;border:1px solid var(--ar-pink-bd);border-radius:14px;padding:12px;text-decoration:none!important;color:var(--ar-ink)!important;background:#fff;transition:transform .15s ease,box-shadow .15s ease}
.ar-prod-c:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(224,1,115,.12)}
.ar-prod-c img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:9px;margin-bottom:10px;background:var(--ar-pink-lt)}
.ar-prod-n{font-weight:600;font-size:15px;line-height:1.4;margin-bottom:6px}
.ar-prod-p{font-size:14px;font-weight:700;color:var(--ar-pink);margin-top:auto}

/* sources + disclaimer */
.ar-src{margin-top:30px;font-size:14px}
.ar-src ol{padding-left:20px}
.ar-src li{margin-bottom:5px;color:var(--ar-ink-3)}
.ar-src a{color:var(--ar-ink-3)!important}
.ar-disc{font-size:13px;line-height:1.6;color:var(--ar-ink-3);border-top:1px solid var(--ar-line);padding-top:14px;margin:26px 0 50px}

@media (max-width:980px){
  .ar-wrap{grid-template-columns:minmax(0,1fr);gap:0}
  .ar-toc{position:static;max-height:none;margin-bottom:18px}
  .ar-toc details:not([open]) ol{display:none}
}
@media (max-width:640px){
  .ar{padding:0 16px}
  .ar-hero{padding-top:24px}
  .ar-body{font-size:16.5px}
  .ia-w{padding:16px}
  .ar-steps>li{padding-left:54px}
}