:root{--bg:#05070F;--bg-2:#0A0F1F;--card:#0D1428;--card-2:#101A38;--line:#1B2547;--line-soft:#141D3A;--ink:#ECEFF8;--ink-dim:#9DA9C9;--ink-faint:#6E7A9E;--cyan:#34D4C9;--cyan-2:#7DE9E1;--cyan-dim:rgba(52,212,201,.14);--green:#4ADE80;--radius:16px;--maxw:1120px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:Inter,"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:rgba(52,212,201,.3)}
.pageline{position:fixed;top:0;left:0;height:2px;width:0;background:linear-gradient(90deg,var(--cyan),var(--cyan-2));z-index:99;box-shadow:0 0 10px rgba(52,212,201,.6)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
a{color:var(--cyan-2)}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:8px}
header{position:sticky;top:0;z-index:60;background:rgba(5,7,15,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line-soft)}
.nav{display:flex;align-items:center;gap:24px;height:66px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--ink)}
.brand img{width:34px;height:34px;border-radius:9px}
.brand b{font-size:17px}
.brand .sub{display:block;font-size:10.5px;color:var(--cyan);font-weight:700;letter-spacing:.14em;text-transform:uppercase;line-height:1.15}
.nav-links{margin-left:auto;display:flex;gap:6px;align-items:center}
.nav-links>a{color:var(--ink-dim);text-decoration:none;font-size:14.5px;font-weight:500;padding:8px 13px;border-radius:9px;transition:color .15s,background .15s}
.nav-links>a:hover,.nav-links>a.on{color:var(--ink);background:var(--card)}
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--cyan);color:#04241F;border:0;cursor:pointer;font:inherit;font-weight:700;font-size:14.5px;padding:11px 22px;border-radius:11px;text-decoration:none;transition:transform .15s,box-shadow .15s}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 28px rgba(52,212,201,.38)}
.btn.ghost{background:transparent;color:var(--cyan-2);border:1px solid rgba(52,212,201,.35)}
.btn.ghost:hover{border-color:var(--cyan);background:var(--cyan-dim);box-shadow:none}
.crumbs{font-size:12.5px;color:var(--ink-faint);padding:24px 0 0;display:flex;gap:8px;flex-wrap:wrap}
.crumbs a{color:var(--ink-dim);text-decoration:none}.crumbs a:hover{color:var(--cyan-2)}
.posthero{padding:32px 0 26px;max-width:860px}
.tagchips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.chip{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);background:var(--cyan-dim);border:1px solid rgba(52,212,201,.28);padding:4px 11px;border-radius:999px;text-decoration:none}
.meta{font-size:13px;color:var(--ink-faint);margin-top:18px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.meta .dot{opacity:.5}
h1{font-size:clamp(30px,4.4vw,44px);line-height:1.14;font-weight:800;letter-spacing:-.025em;max-width:22em}
.standfirst{margin-top:20px;font-size:18px;color:var(--ink-dim);max-width:40em;padding-left:18px;border-left:3px solid var(--cyan)}
.herofig{max-width:860px;margin:26px 0 6px;position:relative;border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.herofig img{width:100%;height:340px;object-fit:cover;display:block}
.herofig .hcat{position:absolute;left:18px;bottom:16px;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#04241F;background:var(--cyan);padding:6px 13px;border-radius:999px;box-shadow:0 6px 20px rgba(52,212,201,.4)}
article{max-width:780px}
.prose{padding:14px 0 30px;font-size:17px;color:#C6CFE6}
.prose > p:first-of-type::first-letter{font-size:56px;font-weight:800;line-height:.9;float:left;margin:6px 12px 0 0;color:var(--cyan);letter-spacing:-.02em}
.prose p{margin:18px 0}
.prose h2{font-size:25px;font-weight:800;letter-spacing:-.015em;margin:48px 0 10px;color:var(--ink);scroll-margin-top:90px;position:relative}
.prose h2::before{content:"";display:inline-block;width:8px;height:22px;border-radius:4px;background:linear-gradient(180deg,var(--cyan),transparent);margin-right:12px;vertical-align:-2px}
.prose h3{font-size:19px;font-weight:700;margin:34px 0 6px;color:var(--ink);scroll-margin-top:90px}
.prose ul,.prose ol{margin:16px 0 16px 4px;display:flex;flex-direction:column;gap:9px;list-style:none}
.prose ul li,.prose ol li{padding-left:26px;position:relative}
.prose ul li::before{content:"";position:absolute;left:2px;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px rgba(52,212,201,.5)}
.prose ol{counter-reset:oli}
.prose ol li{counter-increment:oli}
.prose ol li::before{content:counter(oli);position:absolute;left:0;top:.1em;font-size:12px;font-weight:800;color:#04241F;background:var(--cyan);width:18px;height:18px;border-radius:6px;display:grid;place-items:center}
.prose strong{color:var(--ink)}
.prose a{text-decoration:underline;text-decoration-color:rgba(125,233,225,.4);text-underline-offset:3px}
.prose a:hover{text-decoration-color:var(--cyan)}
.prose code{font-family:"Cascadia Code",Consolas,monospace;font-size:.88em;background:var(--card-2);border:1px solid var(--line);padding:1.5px 7px;border-radius:6px;color:var(--cyan-2);word-break:break-word}
.codebox{background:#070B18;border:1px solid var(--line);border-radius:13px;overflow:hidden;margin:22px 0}
.codebox .cb-head{display:flex;align-items:center;gap:7px;padding:9px 14px;background:var(--bg-2);border-bottom:1px solid var(--line-soft)}
.codebox .cb-head i{width:8px;height:8px;border-radius:50%;background:#263458}
.codebox .cb-head span{margin-left:6px;font-size:11px;color:var(--ink-faint);font-family:"Cascadia Code",Consolas,monospace}
.codebox .cb-copy{margin-left:auto;font:inherit;font-size:11px;font-weight:700;color:var(--cyan-2);background:none;border:1px solid rgba(52,212,201,.35);padding:4px 12px;border-radius:7px;cursor:pointer}
.codebox .cb-copy:hover{background:var(--cyan-dim)}
.codebox .cb-copy.copied{background:var(--green);color:#04241F;border-color:transparent}
.prose pre{background:none;border:0;padding:16px 20px;overflow-x:auto;margin:0}
.prose pre code{background:none;border:0;padding:0;font-size:13px;line-height:1.72;color:#B8C4E4;display:block;word-break:normal}
.prose blockquote{border-left:3px solid var(--cyan);background:linear-gradient(90deg,var(--cyan-dim),transparent);border-radius:0 12px 12px 0;padding:16px 20px;margin:24px 0;font-size:16px;color:var(--ink);font-weight:500;position:relative}
.prose blockquote::before{content:"\201C";position:absolute;top:-14px;left:10px;font-size:44px;color:var(--cyan);opacity:.7;font-family:Georgia,serif}
.prose blockquote b{color:var(--cyan-2)}
.callout{border:1px solid rgba(52,212,201,.32);background:linear-gradient(135deg,rgba(52,212,201,.09),rgba(52,212,201,.02));border-radius:14px;padding:22px 24px;margin:28px 0;position:relative;overflow:hidden}
.callout::after{content:"";position:absolute;top:-40%;right:-10%;width:220px;height:220px;background:radial-gradient(closest-side,rgba(52,212,201,.12),transparent)}
.callout .cl-k{font-size:11.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--cyan);display:block;margin-bottom:8px}
.callout p{font-size:14.5px;color:var(--ink-dim);margin:0;position:relative}
.kv{display:grid;grid-template-columns:210px 1fr;gap:0;border:1px solid var(--line);border-radius:13px;overflow:hidden;margin:22px 0;font-size:14px}
.kv div{padding:12px 16px;border-bottom:1px solid var(--line-soft)}
.kv div:nth-child(odd){background:var(--card-2);color:var(--ink-dim);font-family:"Cascadia Code",Consolas,monospace;font-size:12.5px}
.kv div:nth-last-child(-n+2){border-bottom:0}
.toc{background:linear-gradient(180deg,var(--card),rgba(13,20,40,.6));border:1px solid var(--line);border-radius:14px;padding:22px 26px;margin:28px 0}
.toc b{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);display:flex;align-items:center;gap:9px;margin-bottom:12px}
.toc b::before{content:"";width:16px;height:2px;background:var(--cyan);border-radius:2px}
.toc a{color:var(--ink-dim);text-decoration:none;font-size:14px;display:block;padding:6px 0;border-bottom:1px dashed var(--line-soft);transition:color .12s,transform .12s}
.toc a:last-child{border-bottom:0}
.toc a:hover{color:var(--cyan-2);transform:translateX(4px)}
.share{display:flex;gap:10px;align-items:center;margin:38px 0 0;padding:18px 0;border-top:1px solid var(--line-soft)}
.share span{font-size:13px;color:var(--ink-faint)}
.share button{font:inherit;font-size:12.5px;font-weight:600;color:var(--cyan-2);background:none;border:1px solid rgba(52,212,201,.35);padding:8px 15px;border-radius:9px;cursor:pointer;transition:all .15s}
.share button:hover{background:var(--cyan-dim)}
.authorcard{display:flex;gap:16px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:34px 0 0}
.authorcard img{width:52px;height:52px;border-radius:13px}
.authorcard b{display:block;font-size:15px}
.authorcard span{font-size:13px;color:var(--ink-dim)}
.ctaend{margin:44px 0 0;background:linear-gradient(140deg,#0B1B3D,#0A2A3D 60%,#0B3540);border:1px solid rgba(52,212,201,.35);border-radius:18px;padding:34px;display:flex;gap:26px;align-items:center;flex-wrap:wrap;position:relative;overflow:hidden}
.ctaend::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(125,233,225,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(125,233,225,.05) 1px,transparent 1px);background-size:36px 36px;pointer-events:none;opacity:.5}
.ctaend img{width:76px;filter:drop-shadow(0 10px 26px rgba(52,212,201,.45));position:relative}
.ctaend>div{position:relative}
.ctaend h3{font-size:21px;margin-bottom:7px}
.ctaend p{color:var(--ink-dim);font-size:14.5px;margin-bottom:18px;max-width:34em}
.ctaend .row{display:flex;gap:12px;flex-wrap:wrap}
.postnav{display:flex;gap:14px;margin:40px 0 0}
.postnav a{flex:1;display:block;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:13px;padding:16px 20px;transition:border-color .15s,transform .15s}
.postnav a:hover{border-color:rgba(52,212,201,.4);transform:translateY(-2px)}
.postnav .dir{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-faint);display:block;margin-bottom:6px}
.postnav .pt{font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.35}
.related{border-top:1px solid var(--line-soft);margin-top:64px;padding-top:40px;max-width:860px}
.related h2{font-size:21px;margin-bottom:20px;letter-spacing:-.01em}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.bpost{display:block;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .15s,transform .15s,box-shadow .15s}
.bpost:hover{border-color:rgba(52,212,201,.45);transform:translateY(-3px);box-shadow:0 16px 40px rgba(0,0,0,.4)}
.bpost .thumb{width:100%;height:120px;object-fit:cover;display:block}
.bpost .bd{padding:16px 18px 18px}
.bpost .bt{display:inline-block;font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);background:var(--cyan-dim);border:1px solid rgba(52,212,201,.28);padding:3px 9px;border-radius:999px;margin-bottom:10px}
.bpost h3{font-size:15px;letter-spacing:-.01em;margin-bottom:6px;line-height:1.35;color:var(--ink)}
.bpost p{font-size:12.5px;color:var(--ink-dim)}
.bpost .bm{margin-top:12px;font-size:11px;color:var(--ink-faint)}
.bloghero{padding:74px 0 16px;text-align:center;position:relative}
.bloghero::before{content:"";position:absolute;inset:0;background:radial-gradient(720px 300px at 50% 0%,rgba(52,212,201,.09),transparent 65%);pointer-events:none}
.kicker{color:var(--cyan);font-size:12.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;display:inline-flex;align-items:center;gap:10px}
.kicker::before,.kicker::after{content:"";width:22px;height:2px;background:var(--cyan);border-radius:2px}
.bloghero h1{margin:10px auto 0;max-width:100%}
.bloghero p{color:var(--ink-dim);font-size:16.5px;margin:18px auto 0;max-width:38em}
.filterbar{display:flex;flex-direction:column;gap:14px;margin:34px 0 28px;position:sticky;top:66px;z-index:40;background:rgba(5,7,15,.9);backdrop-filter:blur(10px);padding:12px 0;border-bottom:1px solid var(--line-soft)}
#blogq{font:inherit;font-size:15px;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:13px 18px;width:100%;max-width:560px;transition:border-color .15s}
#blogq:focus{outline:0;border-color:var(--cyan)}
#blogq::placeholder{color:var(--ink-faint)}
.fchips{display:flex;gap:8px;flex-wrap:wrap}
.fchip{font:inherit;font-size:12px;font-weight:700;color:var(--ink-dim);background:var(--card);border:1px solid var(--line);padding:7px 14px;border-radius:999px;cursor:pointer;transition:all .15s}
.fchip:hover{color:var(--ink);border-color:rgba(52,212,201,.4)}
.fchip.on{color:#04241F;background:var(--cyan);border-color:transparent}
.noresults{text-align:center;color:var(--ink-faint);padding:40px 0 60px;font-size:15px}
.bgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:10px 0 80px}
.bgrid .bpost{display:flex;flex-direction:column}
.bgrid .bpost .thumb{height:150px}
.bgrid .bpost .bd{padding:20px 22px;flex:1;display:flex;flex-direction:column}
.bgrid .bpost .bd .bm{margin-top:auto;padding-top:14px}
.bgrid .bpost.featured{grid-column:1/-1;flex-direction:row;border-color:rgba(52,212,201,.35);background:linear-gradient(140deg,#0C1737,#0B2A40)}
.bgrid .bpost.featured .thumb{width:44%;height:auto;min-height:220px}
.bgrid .bpost.featured h3{font-size:23px}
.bgrid .bpost.featured p{font-size:14px}
.bgrid .bpost p{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
footer{border-top:1px solid var(--line-soft);padding:42px 0 48px;background:var(--bg-2)}
.foot{display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between;align-items:flex-start}
.foot small{color:var(--ink-faint);font-size:12.5px;display:block;margin-top:12px}
.footlinks{display:flex;gap:22px;font-size:13.5px}
.footlinks a{color:var(--ink-dim);text-decoration:none}
.footlinks a:hover{color:var(--cyan-2)}
@media(max-width:860px){.bgrid,.rel-grid{grid-template-columns:1fr}.bgrid .bpost.featured{flex-direction:column}.bgrid .bpost.featured .thumb{width:100%;height:170px}.kv{grid-template-columns:1fr}.nav-links>a{display:none}.nav-links{gap:0}.ctaend{padding:26px 22px}.filterbar{position:static}.posthero{padding:26px 0 18px}.herofig img{height:220px}.postnav{flex-direction:column}}

/* v3: instant-paint of static lists + mobile readability */
.bgrid .bpost { content-visibility: auto; contain-intrinsic-size: 260px; }
@media (max-width: 620px) {
  .prose { font-size: 16px; }
  .bpost h3 { font-size: 15.5px; }
  .fchip { min-height: 36px; }
  #blogq { font-size: 16px; }
}

/* ===== v3.1 engagement pack (blog) ===== */
.bpost .thumb { transition: transform .45s cubic-bezier(.2,.65,.3,1); }
.bpost:hover .thumb { transform: scale(1.045); }
.bpost .bt { transition: transform .2s; }
.bpost:hover .bt { transform: translateX(3px); }
.postnav a { transition: border-color .15s, transform .15s, box-shadow .15s; }
.postnav a:hover { box-shadow: 0 12px 30px rgba(0,0,0,.35); }
.codebox { transition: border-color .2s, box-shadow .2s; }
.codebox:hover { border-color: rgba(52,212,201,.35); box-shadow: 0 10px 30px rgba(0,0,0,.35); }
.cb-copy:active { transform: scale(.94); }
.herofig img { transition: transform .8s cubic-bezier(.2,.65,.3,1); }
.herofig:hover img { transform: scale(1.02); }
.totop {
  position: fixed; right: 22px; bottom: 22px; z-index: 70; width: 46px; height: 46px; border-radius: 13px;
  border: 1px solid rgba(52,212,201,.4); background: rgba(13,20,40,.92); color: var(--cyan);
  font-size: 19px; cursor: pointer; display: grid; place-items: center;
  opacity: 0; pointer-events: none; transform: translateY(12px);
  transition: opacity .25s, transform .25s; backdrop-filter: blur(8px);
}
.totop.on { opacity: 1; pointer-events: auto; transform: none; }
.totop:hover { border-color: var(--cyan); background: rgba(52,212,201,.12); }
@media (prefers-reduced-motion: reduce) { .bpost .thumb, .herofig img { transition: none; } }

/* ===== v3.2 mobile polish (blog) ===== */
*, *::before, *::after { min-width: 0; }
html { -webkit-text-size-adjust: 100%; }
img { max-width: 100%; height: auto; }

@media (max-width: 620px) {
  .codebox pre { font-size: 12px; }
  .prose { font-size: 16px; }
  .herofig img { height: 190px; }
  .kv { font-size: 13px; }
  .kv div { padding: 10px 13px; }
  .posthero h1 { font-size: clamp(26px, 7.6vw, 32px); }
  .toc { padding: 16px 18px; }
  .ctaend { flex-direction: column; align-items: flex-start; padding: 24px 20px; }
  .ctaend img { width: 60px; }
  .ctaend .row .btn { width: 100%; justify-content: center; }
  .share { flex-wrap: wrap; }
  .footlinks { flex-direction: column; gap: 12px; }
}