:root{--bg:#0b0f0d;--card:#111613;--fg:#f2f2f2;--muted:#8a948e;--line:rgba(255,255,255,.1);--pri:#3b82f6;--pri-soft:rgba(59,130,246,.14)}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:Inter,system-ui,sans-serif;line-height:1.7;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--pri);text-decoration:none}a:hover{text-decoration:underline}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:1100px;margin:0 auto;padding:20px 20px}
.brand{display:flex;align-items:center;gap:10px;color:var(--fg);font:600 18px Montserrat,sans-serif;letter-spacing:.08em}.brand:hover{text-decoration:none}.brand img{height:26px;width:auto}
.nav-links{display:flex;align-items:center;gap:22px;font-size:14px}.nav-links a{color:var(--muted)}.nav-links a.on{color:var(--fg)}
.btn{display:inline-block;background:var(--pri);color:#fff!important;padding:9px 18px;border-radius:10px;font-weight:600;font-size:14px}.btn:hover{text-decoration:none;opacity:.92}
.wrap{max-width:740px;margin:0 auto;padding:24px 20px 80px}.wide{max-width:1100px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:18px}.crumbs a{color:var(--muted)}
.tag{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--pri);background:var(--pri-soft);padding:4px 10px;border-radius:999px}
h1{font:700 clamp(30px,5vw,44px)/1.15 Montserrat,Inter,sans-serif;margin:14px 0 14px;letter-spacing:-.01em}
.meta{color:var(--muted);font-size:14px;margin-bottom:28px}
.prose h2{font:600 26px/1.25 Montserrat,Inter,sans-serif;margin:44px 0 12px;scroll-margin-top:20px}
.prose h3{font:600 19px/1.3 Inter,sans-serif;margin:28px 0 8px;scroll-margin-top:20px}
.prose p,.prose li{color:#d9ddda}.prose ul,.prose ol{padding-left:22px}.prose li{margin:6px 0}
.prose strong{color:#fff}.prose blockquote{margin:20px 0;padding:4px 18px;border-left:3px solid var(--pri);color:#c9cfcb;background:var(--pri-soft);border-radius:0 10px 10px 0}
.prose code{background:#1a211d;padding:2px 6px;border-radius:6px;font:14px "DM Mono",monospace}
.prose pre{background:#0f1512;border:1px solid var(--line);padding:16px;border-radius:12px;overflow:auto}.prose pre code{background:none;padding:0}
.table-wrap{overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:12px}
table{border-collapse:collapse;width:100%;font-size:15px;min-width:520px}th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}th{background:#121915;color:#fff;font-weight:600}tr:last-child td{border-bottom:0}
.toc{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 20px;margin:0 0 30px;font-size:15px}.toc b{display:block;margin-bottom:6px;color:var(--fg)}.toc ol{margin:0;padding-left:20px}.toc li{margin:3px 0}.toc a{color:#c9cfcb}
.cta{background:linear-gradient(160deg,#122033,#0f1512);border:1px solid rgba(59,130,246,.35);border-radius:18px;padding:28px;margin:48px 0 30px;text-align:center}
.cta h3{font:600 22px Montserrat,sans-serif;margin:0 0 8px}.cta p{color:#c9cfcb;margin:0 0 18px}
.related h2{font:600 20px Montserrat,sans-serif;margin:0 0 14px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:16px}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;color:var(--fg);transition:border-color .2s,transform .2s}.card:hover{border-color:rgba(59,130,246,.5);transform:translateY(-2px);text-decoration:none}
.card h3{font:600 17px/1.35 Inter,sans-serif;margin:10px 0 8px}.card p{color:var(--muted);font-size:14.5px;margin:0 0 10px;line-height:1.55}.card .meta{margin:0;font-size:13px}
.hero{padding:30px 0 10px}.hero p{color:#c9cfcb;max-width:620px;font-size:18px}
.sect{margin:38px 0 0}.sect h2{font:600 22px Montserrat,sans-serif;margin:0 0 6px}.sect .sub{color:var(--muted);font-size:15px;margin:0 0 16px}
.hero-img{margin:0 0 28px}.hero-img img{display:block;width:100%;height:auto;border-radius:16px;border:1px solid var(--line);aspect-ratio:1200/630;background:var(--card)}
.thumb{overflow:hidden;background:var(--card);aspect-ratio:1200/630}.thumb img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card{padding:0;overflow:hidden}.card:hover .thumb img,.feature:hover .thumb img{transform:scale(1.04)}.cbody{padding:18px 20px 20px}.card[hidden]{display:none}
.idx-hero{padding:34px 0 6px}.grad{background:linear-gradient(90deg,#60a5fa,#a78bfa);-webkit-background-clip:text;background-clip:text;color:transparent}
.search{position:relative;max-width:640px;margin-top:22px;display:flex;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:0 12px 0 16px;transition:border-color .2s,box-shadow .2s}.search:focus-within{border-color:var(--pri);box-shadow:0 0 0 4px var(--pri-soft)}
.search svg{color:var(--muted);flex:none}.search input{flex:1;min-width:0;background:none;border:0;outline:0;color:var(--fg);font:500 16px Inter,sans-serif;padding:16px 12px}.search input::placeholder{color:var(--muted)}
.search kbd{font:12px "DM Mono",monospace;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:2px 7px}.clear{background:none;border:0;color:var(--muted);font:500 13px Inter,sans-serif;cursor:pointer;margin-left:8px;padding:6px}.clear:hover{color:var(--fg)}
.chips{position:sticky;top:0;z-index:5;display:flex;gap:10px;overflow-x:auto;padding:16px 0;margin:10px 0 6px;background:linear-gradient(var(--bg) 80%,transparent);scrollbar-width:none}.chips::-webkit-scrollbar{display:none}
.chip{flex:none;display:inline-flex;align-items:center;gap:8px;background:var(--card);color:#c9cfcb;border:1px solid var(--line);border-radius:999px;padding:9px 16px;font:600 14px Inter,sans-serif;cursor:pointer;transition:all .2s}.chip:hover{border-color:rgba(59,130,246,.5);color:#fff;transform:translateY(-1px)}
.chip em{font:500 12px "DM Mono",monospace;font-style:normal;color:var(--muted);background:rgba(255,255,255,.07);border-radius:999px;padding:1px 8px}
.chip.on{background:linear-gradient(135deg,#3b82f6,#6366f1);border-color:transparent;color:#fff;box-shadow:0 6px 20px rgba(59,130,246,.35)}.chip.on em{color:#fff;background:rgba(255,255,255,.22)}
.feature{display:grid;grid-template-columns:1.25fr 1fr;gap:0;background:linear-gradient(160deg,#122033,#0f1512);border:1px solid rgba(59,130,246,.3);border-radius:20px;overflow:hidden;color:var(--fg);margin:18px 0 8px;transition:border-color .2s}.feature:hover{text-decoration:none;border-color:rgba(59,130,246,.6)}.feature[hidden]{display:none}
.fbody{padding:30px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px}.fbody h2{font:700 clamp(22px,3vw,30px)/1.2 Montserrat,Inter,sans-serif;margin:12px 0 6px}.fbody p{color:#c9cfcb;margin:0 0 18px;font-size:16px}
.count{color:var(--muted);font-size:14px;margin:22px 0 14px}.none{color:var(--muted);text-align:center;padding:40px 0}.none[hidden]{display:none}
@media(max-width:760px){.feature{grid-template-columns:1fr}.fbody{padding:22px}}
@media(prefers-reduced-motion:reduce){.thumb img,.chip,.card{transition:none}}
.foot{border-top:1px solid var(--line);margin-top:40px;padding:28px 20px;text-align:center;color:var(--muted);font-size:13px}.foot a{color:var(--muted);margin:0 10px}
@media(max-width:640px){body{font-size:16px}.nav-links a:not(.btn){display:none}}