/* Public blog styles. Static + cacheable; no runtime JS/CSS framework => better LCP/CLS. */
:root{--bg:#12151C;--surface:#1A1D26;--card:#222632;--border:#333846;--text:#fff;--muted:#949A9E;--primary:#00D4D4;--primary-l:#22DCDC}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;min-height:100vh;display:flex;flex-direction:column;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-l);text-decoration:underline}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.wrap-wide{width:100%;max-width:90rem;margin:0 auto;padding:0 24px}   /* = homepage header/footer width */
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:var(--primary);color:#000;padding:8px 12px;border-radius:6px;z-index:99}

/* ---- Header (matches homepage .glass-nav) ---- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(22,25,34,.75);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid rgba(51,56,70,.6)}
.bar{display:flex;align-items:center;justify-content:space-between;height:64px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}.brand:hover{text-decoration:none;color:var(--text)}
.logo-box{width:32px;height:32px;border-radius:8px;background:rgba(0,212,212,.1);display:flex;align-items:center;justify-content:center;overflow:hidden;flex:none}
.logo-box img{width:100%;height:100%;object-fit:cover}
.brand-name{font-weight:700;font-size:18px;letter-spacing:-.01em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:32px;font-size:14px;font-weight:500}
.nav-links a{color:var(--muted);transition:color .15s}.nav-links a:hover,.nav-links a.active{color:var(--primary);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--primary);color:#12151C!important;font-weight:600;font-size:12px;letter-spacing:.05em;text-transform:uppercase;padding:8px 16px;border-radius:8px;box-shadow:0 0 15px rgba(0,212,212,.25);transition:background .15s;white-space:nowrap}
.btn:hover{background:var(--primary-l);text-decoration:none}

/* ---- Page body: real breathing room under the header and above the footer ---- */
main.wrap{flex:1 0 auto;padding-top:56px;padding-bottom:96px}
.crumbs{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0 0 20px;padding:0;font-size:13px;color:var(--muted)}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--border)}
.page-head h1{font-size:clamp(28px,4vw,40px);line-height:1.2;margin:0 0 12px}
.lead{color:var(--muted);font-size:17px;max-width:720px;margin:0 0 40px}
.meta{color:var(--muted);font-size:13px;margin:0 0 8px}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:14px;overflow:hidden;transition:border-color .2s,transform .2s}
.card:hover{border-color:var(--primary);transform:translateY(-2px)}
.card-img{width:100%;aspect-ratio:1200/630;object-fit:cover;background:var(--card)}
.card-img.ph{background:linear-gradient(135deg,#1f2a33,#12313a)}
.card-body{padding:18px}
.card h2,.card h3{font-size:18px;line-height:1.35;margin:0 0 8px}
.card h2 a,.card h3 a{color:var(--text)}.card h2 a::after,.card h3 a::after{content:"";position:absolute;inset:0}
.card p{color:var(--muted);font-size:14px;margin:0}
.pager{display:flex;justify-content:center;align-items:center;gap:24px;margin-top:48px;color:var(--muted);font-size:14px}
.empty{color:var(--muted)}

/* ---- Article ---- */
.post{max-width:760px;margin:0 auto}
.post h1{font-size:clamp(28px,4.5vw,42px);line-height:1.2;margin:0 0 14px}
.cover{margin:28px 0 8px}.cover img{width:100%;border-radius:14px;border:1px solid var(--border)}
.toc{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:16px 20px;margin:28px 0;font-size:14px}
.toc ol{margin:8px 0 0;padding-left:18px}.toc .l3{margin-left:16px;list-style:circle}
.prose{font-size:17px}
.post>header+.prose,.post>.toc+.prose{margin-top:8px}
.prose h2{font-size:26px;line-height:1.3;margin:2.2em 0 .6em;scroll-margin-top:88px}
.prose h3{font-size:20px;margin:1.8em 0 .5em;scroll-margin-top:88px}
.prose p,.prose ul,.prose ol{margin:0 0 1.1em}
.prose img{border-radius:10px;border:1px solid var(--border);margin:1.4em 0}
.prose blockquote{margin:1.4em 0;padding:4px 18px;border-left:3px solid var(--primary);color:#cfd3d6;background:var(--surface);border-radius:0 8px 8px 0}
.prose code{font-family:"JetBrains Mono",ui-monospace,Consolas,monospace;font-size:.9em;background:var(--card);padding:2px 6px;border-radius:5px}
.prose pre{background:#0d1016;border:1px solid var(--border);border-radius:10px;padding:16px;overflow-x:auto}
.prose pre code{background:none;padding:0}
.table-wrap{overflow-x:auto;margin:1.4em 0}
.prose table{border-collapse:collapse;width:100%;font-size:15px}
.prose th,.prose td{border:1px solid var(--border);padding:8px 12px;text-align:left}.prose th{background:var(--surface)}
.cta{margin:64px 0 0;padding:32px;background:var(--surface);border:1px solid var(--border);border-radius:14px;text-align:center}
.cta h2{margin:0 0 8px;font-size:22px}.cta p{color:var(--muted);margin:0 0 20px}
.related{max-width:1200px;margin:88px auto 0}.related h2{font-size:22px;margin:0 0 24px}

/* ---- Footer (matches homepage footer) ---- */
.site-footer{margin-top:auto;border-top:1px solid var(--border);background:rgba(26,29,38,.6);color:var(--muted);padding:64px 0 32px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px}
.foot-logo{display:flex;align-items:center;gap:8px;margin-bottom:16px;color:var(--text);font-weight:700;font-size:16px}
.foot-logo img{border-radius:4px;object-fit:cover}
.foot-brand p{font-size:12px;line-height:1.7;max-width:320px;margin:0 0 12px}
.foot-brand .attr a{color:var(--muted);text-decoration:underline}.foot-brand .attr a:hover{color:var(--primary)}
.foot-h{color:var(--text);font-size:12px;font-weight:600;margin-bottom:12px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:12px}
.site-footer ul a{color:var(--muted)}.site-footer ul a:hover{color:var(--primary);text-decoration:none}
.foot-bottom{border-top:1px solid var(--border);padding-top:24px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12px}

@media(max-width:900px){.nav-links{display:none}.bar{gap:12px}}
@media(max-width:700px){.foot-grid{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}main.wrap{padding-top:36px;padding-bottom:64px}.prose{font-size:16px}.brand-name{font-size:16px}}
@media(max-width:480px){.wrap,.wrap-wide{padding-left:16px;padding-right:16px}.brand{gap:8px;min-width:0}.brand-name{font-size:15px;overflow:hidden;text-overflow:ellipsis}.btn{padding:8px 12px}.bar{gap:8px}}