*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#08090e;--bg2:#0e0f16;--bg3:#13141d;
  --brd:rgba(255,255,255,0.07);--brd2:rgba(255,255,255,0.13);
  --a:#4f6ef7;--a2:#7b96ff;--ag:rgba(79,110,247,0.13);
  --text:#f0f0f8;--sub:#7b7d96;--sub2:#a0a2b8;--green:#22c55e;--r:12px;
}
html{scroll-behavior:smooth}
body{font-family:'DM Sans',sans-serif;background:var(--bg);color:var(--text);overflow-x:hidden;line-height:1.6}
body::after{content:'';position:fixed;inset:0;pointer-events:none;z-index:999;opacity:.025;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

/* NAV */
nav{position:fixed;top:0;width:100%;z-index:100;height:68px;display:flex;align-items:center;justify-content:space-between;padding:0 2.5rem;background:rgba(8,9,14,0.82);backdrop-filter:blur(24px);border-bottom:1px solid var(--brd)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo svg{width:32px;height:32px;display:block;flex-shrink:0}
.logo-name{font-family:'Bricolage Grotesque',sans-serif;font-size:1.25rem;font-weight:700;color:var(--text);letter-spacing:-.03em}
nav ul{display:flex;gap:2rem;list-style:none}
nav a{font-size:.875rem;font-weight:500;color:var(--sub);text-decoration:none;transition:color .15s}
nav a:hover,nav a.active{color:var(--text)}
.nav-pill{padding:.5rem 1.25rem;background:var(--a);color:#fff!important;border-radius:99px;font-weight:600!important;font-size:.835rem!important;transition:all .2s!important;white-space:nowrap}
.nav-pill:hover{background:var(--a2)!important;transform:translateY(-1px)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:6px;border:none;background:transparent}
.burger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{display:none;position:fixed;top:68px;left:0;right:0;bottom:0;background:rgba(8,9,14,0.97);backdrop-filter:blur(24px);z-index:99;flex-direction:column;align-items:center;justify-content:center;gap:2rem}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:1.5rem;font-weight:700;color:var(--sub2);text-decoration:none;font-family:'Bricolage Grotesque',sans-serif;letter-spacing:-.03em;transition:color .15s}
.mobile-menu a:hover{color:var(--text)}
.mobile-menu .nav-pill{font-size:1rem!important;padding:.75rem 2rem}

/* LAYOUT */
.page-wrap{max-width:1200px;margin:0 auto;padding:9rem 2.5rem 6rem;position:relative;z-index:1}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.78rem;color:var(--sub);margin-bottom:2rem;flex-wrap:wrap}
.breadcrumb a{color:var(--sub);text-decoration:none;transition:color .15s}
.breadcrumb a:hover{color:var(--text)}
.breadcrumb-sep{color:var(--brd2)}

/* ARTICLE HEADER */
.art-header{max-width:760px;margin-bottom:3rem}
.art-meta{display:flex;align-items:center;gap:.625rem;margin-bottom:1.25rem;flex-wrap:wrap}
.art-cat{font-size:.68rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;padding:3px 9px;border-radius:5px;background:var(--ag);color:var(--a2);border:1px solid rgba(79,110,247,.2)}
.art-dot{color:var(--brd2)}
.art-read{font-size:.75rem;color:var(--sub)}
.art-date{font-size:.75rem;color:var(--sub)}
.art-title{font-family:'Bricolage Grotesque',sans-serif;font-size:clamp(2rem,4vw,3rem);font-weight:800;letter-spacing:-.04em;line-height:1.06;margin-bottom:1.25rem}
.art-title em{font-style:normal;background:linear-gradient(135deg,var(--a),var(--a2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.art-lead{font-size:1.05rem;color:var(--sub2);line-height:1.75;font-weight:300;border-left:3px solid var(--a);padding-left:1.25rem;margin-bottom:1.5rem}
.art-tags{display:flex;gap:.4rem;flex-wrap:wrap}
.art-tag{font-size:.72rem;font-weight:600;padding:3px 9px;border-radius:5px;background:rgba(255,255,255,.05);border:1px solid var(--brd);color:var(--sub2)}

/* TWO COL */
.two-col{display:grid;grid-template-columns:1fr 300px;gap:4rem;align-items:start}

/* ARTICLE BODY */
.art-body{min-width:0}

/* typography */
.art-body h2{font-family:'Bricolage Grotesque',sans-serif;font-size:1.5rem;font-weight:800;letter-spacing:-.04em;line-height:1.15;margin:2.5rem 0 1rem;color:var(--text)}
.art-body h3{font-family:'Bricolage Grotesque',sans-serif;font-size:1.15rem;font-weight:700;letter-spacing:-.03em;margin:2rem 0 .75rem;color:var(--text)}
.art-body p{font-size:.95rem;color:var(--sub2);line-height:1.8;font-weight:300;margin-bottom:1.1rem}
.art-body p strong{color:var(--text);font-weight:500}
.art-body a{color:var(--a2);text-decoration:none;border-bottom:1px solid rgba(123,150,255,.3);transition:border-color .15s}
.art-body a:hover{border-color:var(--a2)}
.art-body ul,.art-body ol{padding-left:1.5rem;margin-bottom:1.1rem}
.art-body li{font-size:.95rem;color:var(--sub2);line-height:1.75;font-weight:300;margin-bottom:.35rem}
.art-body li strong{color:var(--text);font-weight:500}

/* step blocks */
.step-block{display:flex;gap:1.25rem;padding:1.5rem;background:var(--bg2);border:1px solid var(--brd);border-radius:16px;margin:1.5rem 0;align-items:start}
.sb-n{width:36px;height:36px;border-radius:10px;background:var(--ag);border:1px solid rgba(79,110,247,.25);display:flex;align-items:center;justify-content:center;font-size:.72rem;font-weight:800;color:var(--a2);flex-shrink:0}
.sb-title{font-size:.95rem;font-weight:700;margin-bottom:.3rem;letter-spacing:-.01em}
.sb-text{font-size:.875rem;color:var(--sub2);line-height:1.65;font-weight:300}
.sb-text code{font-family:'Courier New',monospace;background:rgba(255,255,255,.07);padding:1px 5px;border-radius:4px;font-size:.85em;color:var(--a2)}

/* callout */
.callout{padding:1.25rem 1.5rem;border-radius:12px;margin:1.5rem 0}
.callout.warn{background:rgba(245,158,11,.07);border:1px solid rgba(245,158,11,.2)}
.callout.info{background:var(--ag);border:1px solid rgba(79,110,247,.2)}
.callout.good{background:rgba(34,197,94,.07);border:1px solid rgba(34,197,94,.15)}
.callout-title{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.4rem}
.callout.warn .callout-title{color:#f59e0b}
.callout.info .callout-title{color:var(--a2)}
.callout.good .callout-title{color:var(--green)}
.callout p{font-size:.875rem;color:var(--sub2);line-height:1.65;font-weight:300;margin-bottom:0}

/* code block */
.code-block{background:var(--bg3);border:1px solid var(--brd);border-radius:12px;padding:1.25rem 1.5rem;margin:1.25rem 0;font-family:'Courier New',monospace;font-size:.82rem;color:var(--sub2);line-height:1.7;overflow-x:auto}
.code-block .cm{color:var(--sub)}
.code-block .ck{color:var(--a2)}
.code-block .cv{color:var(--green)}

/* divider */
.art-divider{height:1px;background:var(--brd);margin:2.5rem 0}

/* author */
.art-author{display:flex;align-items:center;gap:1rem;padding:1.5rem;background:var(--bg2);border:1px solid var(--brd);border-radius:16px;margin-top:3rem}
.aa-avatar{width:52px;height:52px;border-radius:14px;background:var(--ag);border:1px solid rgba(79,110,247,.25);display:flex;align-items:center;justify-content:center;font-family:'Bricolage Grotesque',sans-serif;font-size:1.1rem;font-weight:800;color:var(--a2);flex-shrink:0}
.aa-name{font-size:.95rem;font-weight:700;margin-bottom:.2rem}
.aa-role{font-size:.78rem;color:var(--sub)}

/* SIDEBAR */
.sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:1.25rem}

/* TOC */
.toc{background:var(--bg2);border:1px solid var(--brd);border-radius:16px;padding:1.5rem}
.toc-title{font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--sub);margin-bottom:1rem}
.toc-list{display:flex;flex-direction:column;gap:.25rem;list-style:none}
.toc-item a{font-size:.82rem;color:var(--sub2);text-decoration:none;padding:.3rem .5rem;border-radius:6px;display:block;transition:all .15s;line-height:1.4;border:none}
.toc-item a:hover{color:var(--text);background:rgba(255,255,255,.04)}
.toc-item.active a{color:var(--a2);background:var(--ag)}
.toc-item.h3 a{padding-left:1.25rem;font-size:.78rem}

/* sidebar CTA */
.side-cta{background:var(--bg2);border:1px solid var(--brd);border-radius:16px;padding:1.5rem;text-align:center}
.sc-title{font-family:'Bricolage Grotesque',sans-serif;font-size:1.05rem;font-weight:800;letter-spacing:-.03em;margin-bottom:.4rem}
.sc-desc{font-size:.8rem;color:var(--sub2);line-height:1.6;font-weight:300;margin-bottom:1.1rem}
.btn-a{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:.8rem 1.5rem;background:var(--a);color:#fff;border-radius:var(--r);font-weight:700;font-size:.84rem;border:none;cursor:pointer;transition:all .25s;box-shadow:0 0 24px rgba(79,110,247,.3);width:100%;font-family:inherit;text-decoration:none}
.btn-a:hover{background:var(--a2);transform:translateY(-1px)}
.sc-free{font-size:.7rem;color:var(--sub);margin-top:.5rem;display:flex;align-items:center;justify-content:center;gap:4px}
.sc-free::before{content:'✓';color:var(--green);font-weight:800}

/* related */
.related-section{border-top:1px solid var(--brd);padding-top:3rem;margin-top:3rem}
.rel-title{font-family:'Bricolage Grotesque',sans-serif;font-size:1.3rem;font-weight:800;letter-spacing:-.04em;margin-bottom:1.5rem}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.rel-card{background:var(--bg2);border:1px solid var(--brd);border-radius:14px;padding:1.25rem;text-decoration:none;color:inherit;transition:all .2s;display:block}
.rel-card:hover{border-color:var(--brd2);transform:translateY(-2px)}
.rel-cat{font-size:.65rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;padding:2px 7px;border-radius:4px;background:var(--ag);color:var(--a2);border:1px solid rgba(79,110,247,.15);margin-bottom:.75rem;display:inline-block}
.rel-art-title{font-size:.9rem;font-weight:600;letter-spacing:-.01em;line-height:1.35;margin-bottom:.4rem}
.rel-read{font-size:.72rem;color:var(--sub)}

/* FOOTER */
footer{border-top:1px solid var(--brd);padding:2rem 2.5rem;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1rem;position:relative;z-index:1}
.foot-logo{display:flex;align-items:center;gap:8px;text-decoration:none}
.foot-logo svg{width:26px;height:26px;display:block}
.foot-name{font-family:'Bricolage Grotesque',sans-serif;font-size:1.1rem;font-weight:700;color:var(--text);letter-spacing:-.03em}
footer p{font-size:.78rem;color:var(--sub)}
.foot-links{display:flex;gap:1.75rem;flex-wrap:wrap}
.foot-links a{font-size:.8rem;color:var(--sub);text-decoration:none;font-weight:500;transition:color .15s}
.foot-links a:hover{color:var(--text)}

.rv{opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s ease}
.rv.in{opacity:1;transform:none}

@media(max-width:960px){
  nav ul,.nav-pill{display:none}
  .burger{display:flex}
  nav{padding:0 1.5rem}
  .page-wrap{padding-left:1.5rem;padding-right:1.5rem;padding-top:8rem}
  .two-col{grid-template-columns:1fr}
  .sidebar{position:static}
  .toc{display:none}
  .related-grid{grid-template-columns:1fr 1fr}
  footer{padding:1.5rem;flex-direction:column;text-align:center}
  .foot-links{justify-content:center}
}
@media(max-width:600px){
  .related-grid{grid-template-columns:1fr}
}