:root{--bg:#050508;--card:#0c0c12;--card2:#12121a;--fg:#fff;--body:#c5c8d0;--muted:#8a8f98;--green:#00c853;--cyan:#00e5ff;--red:#ff3d3d;--gold:#ffd700;--bd:rgba(255,255,255,0.08);--f-dis:'Sora',system-ui,sans-serif;--f-body:'DM Sans',system-ui,sans-serif}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--body);font-family:var(--f-body);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--f-dis);color:var(--fg);line-height:1.2;letter-spacing:-0.5px}
h1{font-size:clamp(28px,6vw,40px);font-weight:800;margin:14px 0 16px}
h2{font-size:clamp(22px,4.5vw,30px);font-weight:700;margin:44px 0 14px;scroll-margin-top:20px}
h3{font-size:19px;font-weight:700;margin:26px 0 8px;color:#e8eaef}
p{margin:0 0 16px}
strong{color:var(--fg);font-weight:700}
ul,ol{margin:0 0 18px;padding-left:22px}
li{margin-bottom:8px}
.topbar{border-bottom:1px solid var(--bd);padding:14px 0;font-family:var(--f-dis);font-weight:700;font-size:15px;color:var(--fg)}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center}
.topbar .brand .dot{color:var(--green)}
.topbar a.cta-top{background:linear-gradient(135deg,#00c853,#00a844);color:#fff;font-size:13px;padding:8px 14px;border-radius:10px}
.topbar a.cta-top:hover{text-decoration:none;filter:brightness(1.08)}
.crumb{font-size:13px;color:var(--muted);margin:22px 0 0}
.crumb a{color:var(--muted)}
.meta{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;font-size:13.5px;color:var(--muted);border-bottom:1px solid var(--bd);padding-bottom:18px;margin-bottom:26px}
.meta .au{display:inline-flex;align-items:center;gap:8px}
.meta .au img{width:34px;height:34px;border-radius:50%;object-fit:cover}
.meta .au b{color:var(--fg);font-family:var(--f-dis);font-size:13.5px}
.lede{font-size:19px;color:#d6d9e0}
.toc{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:20px 22px;margin:26px 0}
.toc h2{font-size:13px;text-transform:uppercase;letter-spacing:1.5px;color:var(--cyan);margin:0 0 12px}
.toc ol{margin:0;padding-left:20px}
.toc a{color:var(--body)}
.callout{background:linear-gradient(135deg,rgba(0,200,83,0.08),rgba(0,229,255,0.05));border:1px solid rgba(0,200,83,0.25);border-left:3px solid var(--green);border-radius:12px;padding:18px 20px;margin:24px 0}
.callout b{color:var(--green)}
.types{display:grid;gap:12px;margin:18px 0}
.type{background:var(--card);border:1px solid var(--bd);border-radius:12px;padding:16px 18px}
.type h3{margin:0 0 4px;color:var(--cyan)}
.type p{margin:0;font-size:15.5px}
.xbox{background:var(--card);border:1px solid rgba(255,61,61,0.25);border-radius:12px;padding:16px 18px;margin:14px 0}
.xbox b{color:var(--red)}
.okbox{background:var(--card);border:1px solid rgba(0,200,83,0.25);border-radius:12px;padding:16px 18px;margin:14px 0}
.okbox b{color:var(--green)}
.cta-block{background:linear-gradient(145deg,#12121a,#0c0c12);border:2px solid rgba(0,200,83,0.3);border-radius:18px;padding:28px 24px;margin:34px 0;text-align:center}
.cta-block h3{color:var(--fg);font-size:21px;margin:0 0 8px}
.cta-block p{font-size:15.5px;color:var(--body);margin:0 0 18px}
.cta-block a{display:inline-block;background:linear-gradient(135deg,#00c853,#00a844);color:#fff;font-family:var(--f-dis);font-weight:700;font-size:16px;padding:15px 28px;border-radius:12px;text-transform:uppercase;letter-spacing:.5px;box-shadow:0 8px 30px rgba(0,200,83,.3)}
.cta-block a:hover{text-decoration:none;filter:brightness(1.08)}
details{background:var(--card);border:1px solid var(--bd);border-radius:12px;padding:0;margin-bottom:10px}
summary{padding:16px 18px;font-family:var(--f-dis);font-weight:700;color:var(--fg);cursor:pointer;font-size:15.5px;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:'+';float:right;color:var(--cyan);font-weight:700}
details[open] summary::after{content:'–'}
details .a{padding:0 18px 16px;font-size:15.5px}
.related{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:20px 22px;margin:30px 0}
.related h3{margin:0 0 10px;font-size:15px;color:var(--cyan);text-transform:uppercase;letter-spacing:1px}
.related ul{margin:0;padding-left:20px}
.authorbox{display:flex;gap:16px;align-items:flex-start;background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:20px;margin:40px 0 24px}
.authorbox img{width:60px;height:60px;border-radius:50%;object-fit:cover;flex:0 0 auto}
.authorbox .n{font-family:var(--f-dis);font-weight:700;color:var(--fg);font-size:16px}
.authorbox .r{font-size:13px;color:var(--muted);margin-bottom:6px}
.authorbox p{font-size:14.5px;margin:0}
.disclaimer{font-size:13px;color:var(--muted);border-top:1px solid var(--bd);padding-top:18px;margin-top:30px}
.refs{font-size:13.5px;color:var(--muted)}
.refs li{margin-bottom:5px}
footer{border-top:1px solid var(--bd);margin-top:40px;padding:26px 0;font-size:13px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}