@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#07090f;--bg2:#0d1120;--card:#111827;--border:#1a2640;
  --accent:#00d4ff;--accent2:#7c3aed;--green:#10b981;--orange:#f59e0b;
  --text:#e2e8f0;--muted:#64748b;--light:#94a3b8;
}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);line-height:1.75;min-height:100vh;font-size:16px}
nav{position:sticky;top:0;z-index:100;background:rgba(7,9,15,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);padding:.85rem 2rem;display:flex;align-items:center;justify-content:space-between}
.nav-brand{font-size:1.1rem;font-weight:800;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-decoration:none;letter-spacing:-.02em}
.nav-links{display:flex;gap:2rem;list-style:none}
.nav-links a{color:var(--muted);text-decoration:none;font-size:.875rem;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.hero{padding:5rem 2rem 4rem;text-align:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:-50%;left:50%;transform:translateX(-50%);width:800px;height:800px;background:radial-gradient(ellipse,rgba(0,212,255,.07) 0%,transparent 70%);pointer-events:none}
.hero-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.35rem 1rem;border:1px solid rgba(0,212,255,.3);border-radius:999px;font-size:.72rem;color:var(--accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:1.5rem;background:rgba(0,212,255,.05)}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:900;line-height:1.15;margin-bottom:1.2rem;letter-spacing:-.04em}
.hero h1 span{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero p{max-width:580px;margin:0 auto 2.5rem;color:var(--light);font-size:1.05rem;line-height:1.7}
.hero-stats{display:flex;justify-content:center;gap:4rem;padding-top:1.5rem;border-top:1px solid var(--border);max-width:500px;margin:2rem auto 0}
.stat-num{font-size:2rem;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:.72rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-top:.2rem}
.section{padding:3rem 2rem;max-width:1120px;margin:0 auto}
.section-title{font-size:1.3rem;font-weight:800;margin:2.5rem 0 1.5rem;display:flex;align-items:center;gap:.75rem;letter-spacing:-.02em;color:var(--accent)}
.section-title::after{content:'';flex:1;height:1px;background:linear-gradient(90deg,var(--border),transparent)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem;margin-bottom:3rem}
.card{background:var(--card);border:1px solid var(--border);border-radius:.875rem;padding:1.6rem;text-decoration:none;color:var(--text);transition:transform .25s cubic-bezier(.34,1.56,.64,1),border-color .2s,box-shadow .2s;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,212,255,.04),transparent);opacity:0;transition:opacity .2s}
.card:hover{transform:translateY(-5px);border-color:rgba(0,212,255,.4);box-shadow:0 8px 40px rgba(0,212,255,.1)}
.card:hover::before{opacity:1}
.card-top{margin-bottom:1.5rem}
.card-cat{font-size:.68rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.6rem}
.card h2{font-size:1.05rem;font-weight:700;margin-bottom:.7rem;line-height:1.35;letter-spacing:-.01em}
.card p{font-size:.85rem;color:var(--muted);line-height:1.65}
.card-meta{font-size:.76rem;color:var(--muted);display:flex;gap:.75rem;border-top:1px solid var(--border);padding-top:1rem;margin-top:auto}
.card-badge{position:absolute;top:1rem;right:1rem;background:rgba(16,185,129,.15);border:1px solid rgba(16,185,129,.3);color:var(--green);font-size:.65rem;font-weight:700;padding:.2rem .5rem;border-radius:4px;text-transform:uppercase;letter-spacing:.08em}
.featured{display:block;text-decoration:none;color:var(--text);background:linear-gradient(135deg,rgba(0,212,255,.05),rgba(124,58,237,.05));border:1px solid rgba(0,212,255,.2);border-radius:1rem;padding:2.25rem;margin-bottom:3rem;transition:border-color .2s,box-shadow .2s;position:relative;overflow:hidden}
.featured:hover{border-color:rgba(0,212,255,.5);box-shadow:0 0 50px rgba(0,212,255,.08)}
.featured-label{font-size:.7rem;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:.12em;margin-bottom:.75rem;display:flex;align-items:center;gap:.4rem}
.featured h2{font-size:1.6rem;font-weight:800;margin-bottom:.8rem;line-height:1.2;letter-spacing:-.03em}
.featured p{color:var(--light);max-width:640px;line-height:1.7;margin-bottom:1.25rem}
.read-more{display:inline-flex;align-items:center;gap:.5rem;color:var(--accent);font-size:.9rem;font-weight:600}
.read-more::after{content:'→';transition:transform .2s}
.featured:hover .read-more::after{transform:translateX(4px)}
.article-wrap{max-width:800px;margin:0 auto;padding:0 1.5rem 5rem}
.article-header{padding:3.5rem 1.5rem 2rem;max-width:800px;margin:0 auto}
.article-label{font-size:.72rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:.1em;margin-bottom:.75rem}
.article-header h1{font-size:clamp(1.7rem,4vw,2.4rem);font-weight:900;line-height:1.2;margin-bottom:1rem;letter-spacing:-.03em}
.article-meta{display:flex;flex-wrap:wrap;gap:1rem;font-size:.82rem;color:var(--muted);margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}
.article-meta span{display:flex;align-items:center;gap:.3rem}
.last-updated{background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.2);border-radius:6px;padding:.4rem .8rem;color:var(--green);font-size:.78rem;font-weight:600}
.toc{background:var(--card);border:1px solid var(--border);border-radius:.75rem;padding:1.5rem;margin:2rem 0;font-size:.88rem}
.toc-title{font-weight:700;margin-bottom:.75rem;color:var(--accent);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}
.toc ol{padding-left:1.25rem;color:var(--light)}
.toc li{margin-bottom:.35rem}
.toc a{color:var(--light);text-decoration:none;transition:color .15s}
.toc a:hover{color:var(--accent)}
.article-body h2{font-size:1.3rem;font-weight:800;margin:2.5rem 0 .8rem;color:var(--text);letter-spacing:-.02em;padding-top:1rem;border-top:1px solid var(--border)}
.article-body h3{font-size:1.05rem;font-weight:700;margin:1.75rem 0 .5rem;color:var(--accent)}
.article-body p{color:#c8d5e8;margin-bottom:1.25rem;line-height:1.85;font-size:.97rem}
.article-body ul,.article-body ol{color:#c8d5e8;padding-left:1.5rem;margin-bottom:1.25rem}
.article-body li{margin-bottom:.5rem;line-height:1.75;font-size:.97rem}
.article-body strong{color:var(--text);font-weight:600}
.article-body a{color:var(--accent);text-decoration:underline;text-decoration-color:rgba(0,212,255,.3);transition:text-decoration-color .2s}
.article-body a:hover{text-decoration-color:var(--accent)}
.callout{background:rgba(0,212,255,.06);border-left:3px solid var(--accent);border-radius:0 .5rem .5rem 0;padding:1rem 1.25rem;margin:1.75rem 0;font-size:.93rem;color:var(--light)}
.callout.tip{background:rgba(16,185,129,.06);border-color:var(--green)}
.callout.warn{background:rgba(245,158,11,.06);border-color:var(--orange)}
.stat-box{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin:2rem 0}
.stat-item{background:var(--card);border:1px solid var(--border);border-radius:.75rem;padding:1.25rem;text-align:center}
.stat-item .num{font-size:1.8rem;font-weight:900;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-item .label{font-size:.75rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-top:.3rem}
.comparison-table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.88rem}
.comparison-table th{background:rgba(0,212,255,.08);color:var(--accent);font-weight:700;padding:.75rem 1rem;text-align:left;border-bottom:2px solid var(--border);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}
.comparison-table td{padding:.7rem 1rem;border-bottom:1px solid var(--border);color:var(--light)}
.comparison-table tr:hover td{background:rgba(255,255,255,.02)}
.faq-section{margin-top:3rem}
.faq-section h2{font-size:1.3rem;font-weight:800;margin-bottom:1.5rem;letter-spacing:-.02em}
.faq-item{border:1px solid var(--border);border-radius:.75rem;margin-bottom:.75rem;overflow:hidden}
.faq-q{background:var(--card);padding:1rem 1.25rem;font-weight:600;font-size:.92rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.faq-q::after{content:'+';color:var(--accent);font-size:1.2rem;font-weight:300;flex-shrink:0}
.faq-a{padding:1rem 1.25rem;font-size:.88rem;color:var(--light);line-height:1.7;border-top:1px solid var(--border)}
.author-box{background:var(--card);border:1px solid var(--border);border-radius:.875rem;padding:1.5rem;margin-top:3rem;display:flex;gap:1.25rem;align-items:flex-start}
.author-avatar{width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0}
.author-name{font-weight:700;font-size:.95rem;margin-bottom:.2rem}
.author-title{font-size:.78rem;color:var(--accent);margin-bottom:.5rem}
.author-bio{font-size:.83rem;color:var(--muted);line-height:1.6}
.related{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border)}
.related-title{font-size:1rem;font-weight:700;margin-bottom:1rem;color:var(--light)}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.75rem}
.related-link{background:var(--card);border:1px solid var(--border);border-radius:.75rem;padding:1rem;text-decoration:none;color:var(--text);font-size:.85rem;font-weight:600;transition:border-color .2s;display:block;line-height:1.4}
.related-link:hover{border-color:var(--accent)}
.related-link span{display:block;font-size:.75rem;color:var(--muted);font-weight:400;margin-top:.2rem}
.back-link{display:inline-flex;align-items:center;gap:.4rem;color:var(--muted);text-decoration:none;font-size:.85rem;transition:color .2s;margin-bottom:2rem}
.back-link:hover{color:var(--accent)}
.article-body img {
  display: block;
  width: 100%;
  max-width: 760px;
  height: auto;
  border-radius: 0.875rem;
  margin: 2.5rem auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.article-body img:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(0, 212, 255, 0.15);
}
.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 0.875rem;
  margin: 2.5rem auto;
  max-width: 760px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}
.video-wrap iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:0}

/* Visual block & specs cheat sheet styling */
.visual-block {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.04), rgba(124, 58, 237, 0.04));
  border: 1px dashed var(--border);
  border-radius: 0.875rem;
  padding: 1.75rem;
  margin: 2.5rem auto;
  max-width: 760px;
}
.visual-block h3 {
  color: var(--accent) !important;
  margin-bottom: 1.25rem !important;
  font-size: 0.85rem !important;
  font-weight: 800 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.08em !important;
  text-align: center !important;
  border-top: none !important;
  padding-top: 0 !important;
}
.visual-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}
.visual-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 0.625rem;
  padding: 1.25rem;
  text-align: center;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s ease, box-shadow 0.25s ease;
}
.visual-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 6px 20px rgba(0, 212, 255, 0.08);
}
.visual-label {
  font-size: 0.68rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.4rem;
}
.visual-value {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
}
.visual-desc {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.4rem;
  line-height: 1.4;
}

footer{border-top:1px solid var(--border);padding:2.5rem 2rem;text-align:center;color:var(--muted);font-size:.82rem}
footer a{color:var(--accent);text-decoration:none}
footer p+p{margin-top:.5rem}
@media(max-width:640px){.hero-stats{gap:2rem}.nav-links{gap:1rem}.author-box{flex-direction:column}}