:root{--cyan:#00e5ff;--violet:#7c3aed;--violet-light:#a78bfa;--bg:#030712;--bg-2:#0a0f1e;--bg-3:#0f172a;--border-dark:#1e293b;--text:#f1f5f9;--text-2:#94a3b8;--text-muted:#475569;--green:#10b981;--yellow:#f59e0b;--red:#ef4444;--border:rgba(124,58,237,.2);--border-hover:rgba(0,229,255,.15);--grad:linear-gradient(135deg,#00e5ff,#7c3aed);--grad-soft:linear-gradient(135deg,rgba(0,229,255,.12),rgba(124,58,237,.12));--font:"Outfit",system-ui,sans-serif;--mono:"JetBrains Mono",monospace}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{max-width:100%;display:block}
::selection{background:rgba(0,229,255,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border-dark);border-radius:8px}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.gradient-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);font-weight:600}
.tag{font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.08em;padding:4px 9px;border-radius:6px;text-transform:uppercase;border:1px solid var(--border);color:var(--violet-light);display:inline-block}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(3,7,18,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-dark)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:11px}
.brand-name{font-weight:800;font-size:19px;letter-spacing:-.01em}.brand-sub{font-family:var(--mono);font-size:9px;letter-spacing:.2em;color:#8c99b0;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:28px}.nav-links a{color:var(--text-2);font-size:15px;font-weight:500;transition:color .2s}.nav-links a:hover{color:var(--text)}
.nav-cta{display:flex;align-items:center;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:0 20px;height:44px;border-radius:11px;font-weight:600;font-size:14.5px;transition:transform .2s,box-shadow .25s,border-color .25s,background .25s}
.btn-primary{background:var(--grad);color:#05080f;box-shadow:0 8px 24px -8px rgba(0,229,255,.5)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px -8px rgba(0,229,255,.65)}
.btn-ghost{background:rgba(255,255,255,.03);color:var(--text);border:1px solid var(--border)}.btn-ghost:hover{border-color:var(--border-hover);background:rgba(0,229,255,.06)}
/* blog hero */
.blog-hero{padding:80px 0 30px;text-align:center;position:relative;overflow:hidden}
.blog-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(700px 320px at 50% -20%,rgba(124,58,237,.22),transparent 60%);z-index:-1}
.blog-hero h1{font-size:clamp(34px,5.5vw,58px);font-weight:900;letter-spacing:-.03em;margin:16px 0 14px}
.blog-hero p{color:var(--text-2);font-size:18px;max-width:600px;margin:0 auto}
/* filters */
.filters{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:34px 0 44px}
.filter{padding:9px 18px;border-radius:10px;border:1px solid var(--border-dark);color:var(--text-2);font-size:14px;font-weight:500;font-family:var(--mono);transition:.2s}
.filter:hover{border-color:var(--border-hover);color:var(--text)}.filter.active{background:var(--grad);color:#05080f;border-color:transparent}
/* index grid */
.post-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(330px,1fr));gap:24px;padding-bottom:40px}
.post-card{background:linear-gradient(180deg,rgba(15,23,42,.6),rgba(10,15,30,.5));border:1px solid var(--border-dark);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,border-color .25s,box-shadow .25s}
.post-card:hover{transform:translateY(-6px);border-color:rgba(0,229,255,.55);box-shadow:0 24px 60px -20px rgba(0,0,0,.7),0 0 0 1px rgba(0,229,255,.18),0 14px 50px -14px rgba(0,229,255,.3)}
.card-cover{aspect-ratio:1200/630;overflow:hidden;border-bottom:1px solid var(--border-dark)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.post-card:hover .card-cover img{transform:scale(1.04)}
.post-card .tag{margin:18px 22px 0}
.post-card h2{font-size:19px;font-weight:700;line-height:1.3;margin:12px 22px 8px;letter-spacing:-.01em}
.post-card p{color:var(--text-2);font-size:14.5px;margin:0 22px;flex:1}
.post-card .meta{margin:16px 22px 20px;padding-top:14px;border-top:1px solid var(--border-dark);font-family:var(--mono);font-size:12px;color:var(--text-muted);display:flex;gap:14px}
/* index faq */
.index-faq{max-width:820px;margin:30px auto 90px}
.section-head{text-align:center;margin-bottom:30px}.section-head h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-top:12px;letter-spacing:-.02em}
/* faq accordion (details) */
.faq-item{border:1px solid var(--border-dark);border-radius:12px;margin-bottom:12px;background:rgba(15,23,42,.4);overflow:hidden;transition:border-color .2s}
.faq-item[open]{border-color:var(--border-hover)}
.faq-item summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item .chev{color:var(--cyan);font-size:20px;transition:transform .25s}.faq-item[open] .chev{transform:rotate(180deg)}
.faq-a{padding:0 22px 20px;color:var(--text-2);font-size:14.5px}
/* article */
.article-wrap{padding:36px 0 20px}
.breadcrumb{font-family:var(--mono);font-size:12.5px;color:var(--text-muted);margin-bottom:26px;display:flex;gap:10px;align-items:center}
.breadcrumb a{color:var(--text-2)}.breadcrumb a:hover{color:var(--cyan)}.breadcrumb .current{color:var(--cyan)}
.post{max-width:760px;margin:0 auto}
.post-head .tag{margin-bottom:16px}
.post-head h1{font-size:clamp(28px,4.6vw,46px);font-weight:800;letter-spacing:-.025em;line-height:1.12;margin-bottom:16px}
.post-head .dek{font-size:19px;color:var(--text-2);margin-bottom:18px;line-height:1.55}
.byline{font-family:var(--mono);font-size:13px;color:var(--text-muted);display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:28px}
.cover{width:100%;border-radius:16px;border:1px solid var(--border);margin-bottom:36px}
.post-body h2{font-size:26px;font-weight:700;letter-spacing:-.01em;margin:38px 0 14px;scroll-margin-top:90px}
.post-body p{color:var(--text-2);font-size:17px;margin-bottom:16px}
.post-body ul{color:var(--text-2);font-size:17px;margin:0 0 16px 4px;list-style:none;display:grid;gap:10px}
.post-body ul li{position:relative;padding-left:28px}
.post-body ul li::before{content:"";position:absolute;left:4px;top:11px;width:8px;height:8px;border-radius:2px;background:var(--grad)}
.post-body strong{color:var(--text)}
.post-body code{font-family:var(--mono);font-size:14px;background:var(--bg-3);border:1px solid var(--border-dark);border-radius:6px;padding:2px 7px;color:var(--cyan)}
.post-body pre{background:var(--bg-3);border:1px solid var(--border-dark);border-radius:12px;padding:20px;overflow-x:auto;margin:8px 0 18px}
.post-body pre code{background:none;border:none;padding:0;color:var(--text-2);font-size:13.5px;line-height:1.7;white-space:pre}
/* comparison */
.cmp{margin:34px 0}.cmp h3{font-size:20px;font-weight:700;margin-bottom:16px}
.cmp-scroll{overflow-x:auto;border:1px solid var(--border-dark);border-radius:14px}
.cmp table{width:100%;border-collapse:collapse;font-size:15px;min-width:480px}
.cmp th{background:var(--bg-3);color:var(--cyan);font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;text-align:left;padding:14px 18px;border-bottom:1px solid var(--border-dark)}
.cmp td{padding:14px 18px;border-bottom:1px solid var(--border-dark);color:var(--text-2)}
.cmp td.lead{color:var(--text);font-weight:600}
.cmp tr:last-child td{border-bottom:none}
/* post faq + cta + related */
.post-faq{max-width:760px;margin:48px auto 0}.post-faq h2{font-size:24px;font-weight:700;margin-bottom:18px}
.post-cta{max-width:760px;margin:44px auto 0;text-align:center;padding:40px 30px;border-radius:20px;background:var(--grad-soft);border:1px solid var(--border)}
.post-cta h3{font-size:24px;font-weight:800;margin-bottom:10px}.post-cta p{color:var(--text-2);margin-bottom:22px;max-width:480px;margin-left:auto;margin-right:auto}
.related{max-width:1180px;margin:64px auto 0}.related h2{font-size:22px;font-weight:700;margin-bottom:22px;text-align:center}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.rel-card{background:linear-gradient(180deg,rgba(15,23,42,.6),rgba(10,15,30,.5));border:1px solid var(--border-dark);border-radius:14px;overflow:hidden;transition:transform .25s,border-color .25s}
.rel-card:hover{transform:translateY(-5px);border-color:rgba(0,229,255,.5)}
.rel-card img{width:100%;aspect-ratio:1200/630;object-fit:cover;border-bottom:1px solid var(--border-dark)}
.rel-card .tag{margin:16px 18px 0}.rel-card h3{font-size:16px;font-weight:600;margin:10px 18px 18px;line-height:1.35}
/* footer */
.footer{border-top:1px solid var(--border-dark);padding:64px 0 30px;background:var(--bg-2);margin-top:80px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand p{color:var(--text-2);font-size:14px;margin-top:16px;max-width:280px}
.footer-col h5{font-size:13px;font-family:var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:16px}
.footer-col a{display:block;color:var(--text-2);font-size:14.5px;padding:6px 0;transition:color .2s}.footer-col a:hover{color:var(--cyan)}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid var(--border-dark);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--text-muted)}
.footer-bottom .links{display:flex;gap:20px}.footer-bottom .links a:hover{color:var(--cyan)}
@media(max-width:768px){.nav-links,.nav-cta .btn-ghost{display:none}.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.post-body p,.post-body ul{font-size:16px}}
@media(max-width:480px){.footer-grid{grid-template-columns:1fr}.post-grid{grid-template-columns:1fr}}