:root{--bt-bg: #150910;--bt-panel: #21101b;--bt-panel-2: #2b1524;--bt-fg: #f3e9ef;--bt-dim: #b09aa6;--bt-line: #3a2030;--bt-plum: #d1477f;--bt-plum-ink: #1a0510;--bt-w: 960px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bt-bg);color:var(--bt-fg);font:16px/1.68 ui-sans-serif,-apple-system,Segoe UI,Roboto,sans-serif}a{color:var(--bt-plum)}h1,h2,h3{font-family:Rockwell,Roboto Slab,Courier New,Georgia,serif;line-height:1.16;letter-spacing:-.005em}h1{font-size:2.15rem;margin:0 0 .5rem}h2{font-size:1.45rem}.bt-shell{max-width:var(--bt-w);margin:0 auto;padding:0 1.15rem}.bt-top{border-bottom:1px solid var(--bt-line);background:#150910d9;backdrop-filter:blur(8px);position:sticky;top:0;z-index:10}.bt-top .bt-shell{display:flex;align-items:center;justify-content:space-between;padding:.85rem 1.15rem}.bt-brand{font-family:Rockwell,Roboto Slab,serif;font-weight:700;font-size:1.35rem;color:var(--bt-fg);text-decoration:none}.bt-brand b{color:var(--bt-plum)}.bt-nav{display:flex;gap:1.1rem;flex-wrap:wrap}.bt-nav a{color:var(--bt-dim);text-decoration:none;font-size:.92rem}.bt-nav a:hover{color:var(--bt-plum)}.bt-main{padding:2.25rem 0 3.5rem}.bt-lede{font-size:1.16rem;color:var(--bt-dim)}.bt-kicker{color:var(--bt-plum);font-family:Rockwell,Roboto Slab,serif;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem}.bt-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.1rem}.bt-feature{border:1px solid var(--bt-line);border-radius:12px;background:linear-gradient(165deg,var(--bt-panel-2),var(--bt-panel));padding:1.25rem;text-decoration:none;color:var(--bt-fg);display:block;transition:border-color .15s ease,transform .08s ease}.bt-feature:hover{border-color:var(--bt-plum);transform:translateY(-2px)}.bt-feature h3{margin:.35rem 0 .4rem;font-size:1.2rem}.bt-feature p{margin:0;color:var(--bt-dim);font-size:.92rem}.bt-list{list-style:none;margin:0;padding:0}.bt-list li{border-top:1px solid var(--bt-line);padding:1rem 0}.bt-list a{text-decoration:none;color:var(--bt-fg)}.bt-list a:hover h3{color:var(--bt-plum)}.bt-list h3{font-size:1.28rem;margin:0 0 .25rem}.bt-list p{margin:0;color:var(--bt-dim);font-size:.92rem}.bt-still{position:relative;aspect-ratio:16 / 9;border-radius:12px;overflow:hidden;border:1px solid var(--bt-line);background:#000;display:grid;place-items:center}.bt-still img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.5)}.bt-still .bt-overlay{position:relative;text-align:center;padding:1.5rem}.bt-still p{color:#eee;margin:0 0 .8rem}.bt-vthumb{position:relative;aspect-ratio:16 / 9;border-radius:8px;overflow:hidden;border:1px solid var(--bt-line);background:#000}.bt-vthumb img{width:100%;height:100%;object-fit:cover}.bt-dur{position:absolute;right:6px;bottom:6px;background:#000000d9;color:#fff;font-size:.72rem;padding:.1rem .35rem;border-radius:3px}.bt-prose{max-width:700px}.bt-prose h2{margin-top:1.9rem}.bt-prose p,.bt-prose li{color:#e0d3db}.bt-answer{border-left:4px solid var(--bt-plum);background:var(--bt-panel);padding:.9rem 1.1rem;border-radius:0 8px 8px 0;margin:1rem 0 1.5rem}.bt-note{border:1px solid #6a2447;background:var(--bt-panel);border-radius:10px;padding:.9rem 1.1rem;margin:1.25rem 0}.bt-note strong{color:var(--bt-plum)}.bt-tags{display:flex;flex-wrap:wrap;gap:.35rem;margin:.75rem 0}.bt-tag{font-size:.72rem;text-transform:uppercase;letter-spacing:.03em;color:var(--bt-dim);background:var(--bt-panel-2);border:1px solid var(--bt-line);border-radius:999px;padding:.2rem .55rem}.bt-faq details{border-top:1px solid var(--bt-line);padding:.7rem 0}.bt-faq summary{cursor:pointer;font-weight:600}.bt-btn{display:inline-block;background:var(--bt-plum);color:var(--bt-plum-ink);font-weight:700;text-decoration:none;padding:.7rem 1.3rem;border-radius:8px;border:none;cursor:pointer}.bt-btn:hover{filter:brightness(1.08)}.bt-btn--ghost{background:transparent;color:var(--bt-plum);border:1.5px solid var(--bt-plum)}.bt-foot{border-top:1px solid var(--bt-line);color:var(--bt-dim);font-size:.83rem;padding:2rem 0}.bt-foot .bt-shell{display:flex;flex-wrap:wrap;gap:.6rem 1.4rem;justify-content:space-between}.bt-foot a{color:var(--bt-dim);text-decoration:none}.bt-herobox{background:linear-gradient(#1509109e,#150910b8),url(/hero.jpg) center/cover;border-radius:12px;padding:2.8rem 2.4rem;margin-bottom:1.8rem}.bt-herobox h1{color:#fff}.bt-herobox .bt-lede{color:#ffffffe6}.bt-artimg{width:100%;max-width:720px;height:auto;aspect-ratio:16 / 9;object-fit:cover;border-radius:12px;border:1px solid rgba(128,128,128,.25);margin:.6rem 0 1.5rem;display:block}.bt-byline{font-size:.85rem;opacity:.75;margin:0 0 1.2rem;line-height:1.6}.bt-byline a{font-weight:600}.bt-authorgrid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin:1.5rem 0}.bt-authorcard{border:1px solid currentColor;border-color:color-mix(in srgb,currentColor 18%,transparent);border-radius:10px;padding:1rem 1.1rem}.bt-authorcard h2{margin:0 0 .2rem;font-size:1.05rem}.bt-authorrole{font-size:.85rem;opacity:.7;margin:0 0 .5rem}.bt-authormeta{font-size:.85rem;opacity:.75;margin:.4rem 0}.bt-authorlist{line-height:1.9}