/* ===================== Article ===================== */
.art-progress{ position:fixed; top:0; left:0; height:3px; background:linear-gradient(90deg,var(--purple),var(--teal)); z-index:100; width:0; transition:width .1s linear; }

.art-hero{ padding-top:clamp(28px,4vw,52px); }
.art-hero__in{ max-width:820px; margin:0 auto; padding-inline:var(--gut); text-align:center; }
.art-breadcrumb{ font-family:var(--font-mono); font-size:12.5px; color:var(--muted); display:flex; gap:8px; justify-content:center; align-items:center; }
.art-breadcrumb a:hover{ color:var(--purple); }
.art-cat{ display:inline-flex; margin-top:22px; background:var(--purple-50); color:var(--purple-700); font-weight:700; font-size:13px; letter-spacing:.04em; padding:7px 15px; border-radius:var(--r); }
.art-hero h1{ font-size:clamp(32px,4.8vw,56px); line-height:1.08; letter-spacing:-.025em; margin:20px auto 0; max-width:18ch; }
.art-hero__lede{ font-size:clamp(18px,2vw,22px); color:var(--ink-soft); margin:22px auto 0; max-width:60ch; line-height:1.5; }
.art-byline{ display:flex; gap:18px; justify-content:center; align-items:center; margin-top:30px; flex-wrap:wrap; color:var(--muted); font-size:14.5px; }
.art-byline .av{ width:40px; height:40px; border-radius:50%; background:var(--purple); color:#fff; display:grid; place-items:center; font-weight:700; font-family:var(--font-head); }
.art-byline .who{ display:flex; align-items:center; gap:11px; color:var(--ink); font-weight:600; }
.art-byline .dot{ width:4px; height:4px; border-radius:50%; background:var(--faint); }

.art-cover{ max-width:1040px; margin:clamp(32px,4vw,52px) auto 0; padding-inline:var(--gut); }
.art-cover__media{ aspect-ratio:21/9; border-radius:var(--r-xl); overflow:hidden; box-shadow:var(--sh-3); }
.art-cover__media img{ width:100%; height:100%; object-fit:cover; }
@media (max-width:680px){ .art-cover__media{ aspect-ratio:16/10; } }

/* layout: body + sticky TOC (TOC always sits beside the body) */
.art-layout{ max-width:1000px; margin:clamp(40px,5vw,68px) auto 0; padding-inline:var(--gut); display:grid; grid-template-columns:228px minmax(0,690px); justify-content:center; gap:48px; align-items:start; }
.art-toc{ position:sticky; top:108px; align-self:start; }
.art-toc__label{ font-family:var(--font-mono); font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); margin-bottom:14px; }
.art-toc ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:2px; border-left:2px solid var(--line); }
.art-toc a{ display:block; font-size:13.5px; color:var(--muted); padding:7px 0 7px 16px; margin-left:-2px; border-left:2px solid transparent; transition:.2s; line-height:1.3; }
.art-toc a:hover{ color:var(--ink); }
.art-toc a.is-active{ color:var(--purple); border-left-color:var(--purple); font-weight:600; }
.art-body{ min-width:0; }
@media (max-width:980px){
  .art-layout{ grid-template-columns:1fr; max-width:700px; gap:0; }
  .art-toc{ display:none; }
}

/* ---- body blocks ---- */
.art-body > * + *{ margin-top:26px; }
.art-body h2{ font-size:clamp(26px,3vw,36px); letter-spacing:-.02em; margin-top:52px; scroll-margin-top:100px; }
.art-body h3{ font-size:clamp(20px,2.2vw,25px); margin-top:38px; }
.art-body p{ font-size:18px; line-height:1.72; color:var(--ink-soft); }
.art-body p.lead{ font-size:21px; line-height:1.6; color:var(--ink); }
.art-body a.inline{ color:var(--purple); font-weight:600; border-bottom:1.5px solid var(--purple-100); }
.art-body a.inline:hover{ border-color:var(--purple); }
.art-body strong{ color:var(--ink); font-weight:700; }

/* figure (media always matches the text column width) */
.b-figure{ margin:36px 0 0; }
.b-figure__media{ border-radius:var(--r-lg); overflow:hidden; box-shadow:var(--sh-2); }
.b-figure__media img{ width:100%; display:block; }
.b-figure .sp-ph{ aspect-ratio:16/9; }
.b-figure figcaption{ font-size:14px; color:var(--muted); margin-top:12px; text-align:center; font-family:var(--font-mono); letter-spacing:.02em; }
.b-figure--wide{ width:100%; }

/* split image+text */
.b-split{ display:grid; grid-template-columns:1fr 1fr; gap:32px; align-items:center; margin-top:40px; }
.b-split--rev .b-split__media{ order:2; }
.b-split__media{ border-radius:var(--r-lg); overflow:hidden; box-shadow:var(--sh-2); aspect-ratio:4/3; }
.b-split__media img{ width:100%; height:100%; object-fit:cover; }
.b-split__media .sp-ph{ position:absolute; inset:0; }
.b-split h3{ margin-top:0; }
.b-split p{ margin-top:12px; font-size:16.5px; }
@media (max-width:680px){ .b-split{ grid-template-columns:1fr; } .b-split--rev .b-split__media{ order:0; } }

/* lists */
.b-list{ list-style:none; margin-top:24px; padding:0; display:flex; flex-direction:column; gap:14px; }
.b-list li{ display:flex; gap:14px; font-size:17.5px; line-height:1.6; color:var(--ink-soft); }
.b-list--num li{ counter-increment:li; }
.b-list--num .num{ flex:none; width:30px; height:30px; border-radius:9px; background:var(--purple-50); color:var(--purple); font-family:var(--font-head); font-weight:700; font-size:15px; display:grid; place-items:center; margin-top:2px; }
.b-list--check svg{ color:var(--teal); flex:none; font-size:22px; margin-top:1px; }
.b-list li b{ color:var(--ink); }

/* pull quote */
.b-quote{ margin:46px 0; padding:8px 0 8px 32px; border-left:4px solid var(--purple); position:relative; }
.b-quote__ic{ color:var(--purple-100); font-size:40px; position:absolute; left:-2px; top:-22px; }
.b-quote p{ font-family:var(--font-head); font-size:clamp(22px,2.6vw,30px); line-height:1.32; color:var(--ink); font-weight:500; letter-spacing:-.01em; }
.b-quote cite{ display:block; margin-top:16px; font-style:normal; font-size:15px; color:var(--muted); font-family:var(--font-body); }
.b-quote cite b{ color:var(--ink-soft); }

/* video */
.b-video{ margin:40px 0; }
.b-video__frame{ position:relative; aspect-ratio:16/9; border-radius:var(--r-lg); overflow:hidden; box-shadow:var(--sh-3); background:#000; }
.b-video__frame iframe{ position:absolute; inset:0; width:100%; height:100%; border:0; }
.b-video__poster{ position:absolute; inset:0; cursor:pointer; }
.b-video__poster img{ width:100%; height:100%; object-fit:cover; }
.b-video__poster .play{ position:absolute; inset:0; margin:auto; width:78px; height:78px; border-radius:50%; background:rgba(255,255,255,.92); display:grid; place-items:center; color:var(--purple); font-size:30px; box-shadow:var(--sh-3); transition:transform .25s var(--ease-out); }
.b-video__poster:hover .play{ transform:scale(1.08); }
.b-video__poster::after{ content:""; position:absolute; inset:0; background:linear-gradient(transparent 50%, rgba(0,0,0,.35)); }
.b-video figcaption{ font-size:14px; color:var(--muted); margin-top:12px; text-align:center; font-family:var(--font-mono); }

/* table */
.b-table{ margin:36px 0; overflow-x:auto; border-radius:var(--r); box-shadow:var(--sh-2); border:1px solid var(--line-soft); }
.b-table table{ width:100%; border-collapse:collapse; background:var(--surface); font-size:15.5px; }
.b-table th{ text-align:left; padding:16px 20px; background:var(--surface-2); font-family:var(--font-head); font-weight:700; font-size:14px; letter-spacing:.01em; color:var(--ink); border-bottom:1px solid var(--line); }
.b-table td{ padding:15px 20px; border-bottom:1px solid var(--line-soft); color:var(--ink-soft); }
.b-table tr:last-child td{ border-bottom:0; }
.b-table tbody tr{ transition:background .2s; }
.b-table tbody tr:hover{ background:var(--purple-50); }
.b-table td .yes{ color:var(--teal); font-weight:700; }
.b-table td .no{ color:var(--faint); }

/* callout */
.b-callout{ margin:36px 0; padding:24px 26px; border-radius:var(--r); display:flex; gap:16px; background:var(--purple-50); border:1px solid var(--purple-100); }
.b-callout__ic{ flex:none; width:40px; height:40px; border-radius:11px; background:var(--purple); color:#fff; display:grid; place-items:center; font-size:21px; }
.b-callout h4{ font-size:17px; margin-bottom:5px; }
.b-callout p{ font-size:15.5px; line-height:1.55; color:var(--ink-soft); margin-top:0; }
.b-callout--teal{ background:var(--teal-50); border-color:var(--teal-100); }
.b-callout--teal .b-callout__ic{ background:var(--teal); }
.b-callout--warn{ background:#FEF6E7; border-color:#FAE7C0; }
.b-callout--warn .b-callout__ic{ background:#E0A52E; }

/* gallery */
.b-gallery{ margin:40px 0; display:grid; gap:12px; }
.b-gallery--3{ grid-template-columns:repeat(3,1fr); }
.b-gallery--mason{ grid-template-columns:repeat(4,1fr); grid-auto-rows:130px; }
.b-gallery img, .b-gallery .sp-ph{ width:100%; height:100%; object-fit:cover; border-radius:var(--r-sm); box-shadow:var(--sh-1); }
.b-gallery--mason .g-tall{ grid-row:span 2; }
.b-gallery--mason .g-wide{ grid-column:span 2; }
@media (max-width:680px){ .b-gallery--3{ grid-template-columns:1fr 1fr; } .b-gallery--mason{ grid-template-columns:1fr 1fr; } }

/* stat row */
.b-stats{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin:40px 0; }
.b-stat{ background:var(--surface); border:1px solid var(--line-soft); border-radius:var(--r); padding:26px 24px; box-shadow:var(--sh-1); }
.b-stat .n{ font-family:var(--font-head); font-size:38px; font-weight:700; color:var(--purple); letter-spacing:-.02em; }
.b-stat .l{ color:var(--ink-soft); font-size:15px; margin-top:6px; }
@media (max-width:680px){ .b-stats{ grid-template-columns:1fr; } }

/* inline CTA */
.b-cta{ margin:48px 0; background:var(--ink); color:#fff; border-radius:var(--r-lg); padding:clamp(28px,3.5vw,44px); display:flex; gap:24px; align-items:center; justify-content:space-between; flex-wrap:wrap; position:relative; overflow:hidden; }
.b-cta::after{ content:""; position:absolute; width:280px; height:280px; border-radius:50%; background:radial-gradient(circle, rgba(124,63,196,.5), transparent 70%); right:-80px; top:-80px; }
.b-cta > *{ position:relative; z-index:2; }
.b-cta h3{ color:#fff; font-size:clamp(22px,2.6vw,28px); }
.b-cta p{ color:rgba(255,255,255,.7); margin-top:8px; font-size:16px; max-width:42ch; }
.b-cta .sp-btn--primary{ background:#fff; color:var(--ink); }
.b-cta .sp-btn--primary:hover{ background:#fff; color:var(--purple-700); }

/* mini FAQ in article */
.b-faq{ margin:36px 0; border-radius:var(--r); border:1px solid var(--line); overflow:hidden; }
.b-faq .fitem{ background:var(--surface); padding-inline:22px; }
.b-faq .fitem:last-child{ border-bottom:0; }

/* tags + share footer */
.art-foot{ max-width:680px; margin:clamp(48px,6vw,72px) auto 0; padding-inline:var(--gut); }
.art-foot__tags{ display:flex; gap:9px; flex-wrap:wrap; padding-top:30px; border-top:1px solid var(--line); }
.art-share{ display:flex; gap:10px; align-items:center; margin-top:28px; }
.art-share span{ font-size:14px; color:var(--muted); }
.art-share button{ width:42px; height:42px; border-radius:50%; border:1px solid var(--line); background:var(--surface); color:var(--ink-soft); display:grid; place-items:center; font-size:18px; transition:.2s; box-shadow:var(--sh-1); }
.art-share button:hover{ color:var(--purple); transform:translateY(-2px); box-shadow:var(--sh-2); }

/* related */
.art-related{ max-width:var(--maxw); margin:clamp(56px,7vw,90px) auto 0; padding-inline:var(--gut); }
.art-related h2{ font-size:clamp(24px,3vw,34px); margin-bottom:30px; }
.art-related__grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:880px){ .art-related__grid{ grid-template-columns:1fr; } }