:root{
  --bg:#f6f8fc;
  --surface:#ffffff;
  --surface-2:#eef3f8;
  --text:#0f172a;
  --muted:#526176;
  --border:#dbe4ef;
  --primary:#2563eb;
  --primary-2:#60a5fa;
  --accent:#0ea5e9;
  --cyan:#06b6d4;
  --violet:#7c3aed;
  --shadow:0 16px 50px rgba(15,23,42,.08);
  --radius:18px;
  --max:1180px;
}
html[data-theme="dark"]{
  --bg:#07101d;
  --surface:#0d1726;
  --surface-2:#111f31;
  --text:#f8fafc;
  --muted:#a8b5c7;
  --border:#24354a;
  --primary:#3b82f6;
  --primary-2:#7db6ff;
  --accent:#22d3ee;
  --cyan:#22d3ee;
  --violet:#a78bfa;
  --shadow:0 20px 70px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
.container{width:min(var(--max),calc(100% - 36px));margin-inline:auto}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:16px;top:16px;z-index:999;background:var(--surface);padding:12px 16px;border-radius:10px}
.site-header{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb,var(--bg) 88%, transparent);
  backdrop-filter:blur(14px);
  border-bottom:1px solid color-mix(in srgb,var(--border) 75%, transparent);
}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800}
.brand-mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#0a1323;border:1px solid #2d3d55;color:white;font-weight:900}
.brand-mark span{color:var(--cyan)}
.brand-name{font-family:"STIX Two Text",Georgia,serif;font-size:1.35rem;letter-spacing:-.02em}
.brand-name em{font-family:Inter,sans-serif;font-style:normal;color:var(--primary-2)}
.nav{display:flex;align-items:center;gap:4px}
.nav a,.nav button{padding:10px 12px;border-radius:10px;color:var(--muted);background:none;border:0;cursor:pointer}
.nav a:hover,.nav a.active,.nav button:hover{color:var(--text);background:var(--surface-2)}
.header-actions{display:flex;align-items:center;gap:8px}
.icon-btn{width:42px;height:42px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer}
.primary-btn,.secondary-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:12px;font-weight:750;border:1px solid transparent;cursor:pointer;
}
.primary-btn{background:var(--primary);color:white;box-shadow:0 10px 30px color-mix(in srgb,var(--primary) 25%,transparent)}
.secondary-btn{background:var(--surface);border-color:var(--border);color:var(--text)}
.mobile-toggle{display:none}
.hero{padding:84px 0 58px}
.hero-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary-2);font-weight:800;font-size:.84rem;text-transform:uppercase;letter-spacing:.12em}
.hero h1,.page-hero h1,.article-hero h1{
  font-family:"STIX Two Text",Georgia,serif;
  font-weight:700;line-height:1.02;letter-spacing:-.045em;margin:.4em 0 .28em;
}
.hero h1{font-size:clamp(3rem,6vw,5.8rem)}
.hero h1 span{color:var(--primary-2)}
.hero p{font-size:1.15rem;color:var(--muted);max-width:690px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-panel{
  min-height:420px;border:1px solid var(--border);border-radius:30px;padding:26px;box-shadow:var(--shadow);
  background:
    radial-gradient(circle at 75% 12%,color-mix(in srgb,var(--violet) 25%,transparent),transparent 34%),
    radial-gradient(circle at 18% 86%,color-mix(in srgb,var(--cyan) 20%,transparent),transparent 30%),
    var(--surface);
  position:relative;overflow:hidden;
}
.grid-pattern{position:absolute;inset:0;background-image:linear-gradient(color-mix(in srgb,var(--border) 55%,transparent) 1px,transparent 1px),linear-gradient(90deg,color-mix(in srgb,var(--border) 55%,transparent) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(to bottom,black,transparent)}
.hero-terminal{position:relative;margin-top:90px;background:#07111f;color:#dbeafe;border:1px solid #28415f;border-radius:18px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.terminal-bar{padding:12px 15px;border-bottom:1px solid #28415f;background:#0b1729;color:#88a6ca;font-size:.8rem}
.terminal-code{padding:22px;font-family:"IBM Plex Mono",ui-monospace,monospace;font-size:.92rem;line-height:1.85}
.terminal-code .k{color:#7dd3fc}.terminal-code .v{color:#c4b5fd}.terminal-code .s{color:#86efac}
.section{padding:66px 0}
.section.alt{background:var(--surface-2)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2,.page-hero h1{font-family:"STIX Two Text",Georgia,serif;font-size:clamp(2rem,4vw,3.2rem);margin:0;letter-spacing:-.03em}
.section-head p{margin:.35rem 0 0;color:var(--muted)}
.text-link{color:var(--primary-2);font-weight:750}
.feature-card{display:grid;grid-template-columns:1.05fr .95fr;background:var(--surface);border:1px solid var(--border);border-radius:26px;overflow:hidden;box-shadow:var(--shadow)}
.feature-visual{min-height:360px;padding:38px;background:linear-gradient(135deg,#0b1730,#172b4f);color:white;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.feature-visual:after{content:"";position:absolute;width:280px;height:280px;border:1px solid rgba(125,182,255,.25);border-radius:50%;right:-80px;top:-60px;box-shadow:0 0 0 42px rgba(34,211,238,.05),0 0 0 84px rgba(124,58,237,.04)}
.feature-visual strong{font-family:"STIX Two Text",Georgia,serif;font-size:2rem;line-height:1.15;max-width:430px;position:relative;z-index:1}
.feature-body{padding:38px;display:flex;flex-direction:column;justify-content:center}
.badge{display:inline-flex;align-items:center;width:max-content;padding:6px 10px;border-radius:999px;background:color-mix(in srgb,var(--primary) 14%,var(--surface));color:var(--primary-2);font-weight:800;font-size:.76rem;text-transform:uppercase;letter-spacing:.08em}
.feature-body h3,.card h3{font-family:"STIX Two Text",Georgia,serif;line-height:1.18;letter-spacing:-.02em}
.feature-body h3{font-size:2rem;margin:16px 0 10px}
.meta{display:flex;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:.9rem}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:0 10px 30px rgba(15,23,42,.04);transition:.2s transform,.2s border-color}
.card:hover{transform:translateY(-4px);border-color:color-mix(in srgb,var(--primary) 45%,var(--border))}
.card h3{font-size:1.35rem;margin:14px 0 8px}
.card p{color:var(--muted);margin:0 0 18px}
.news-shell{display:grid;grid-template-columns:220px 1fr;gap:24px}
.tabs{display:flex;flex-direction:column;gap:8px}
.tab{border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:12px 14px;border-radius:12px;text-align:left;cursor:pointer;font-weight:700}
.tab.active{background:var(--primary);border-color:var(--primary);color:white}
.news-list{display:grid;gap:12px}
.news-item{display:flex;align-items:center;justify-content:space-between;gap:18px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:18px}
.news-item strong{font-family:"STIX Two Text",Georgia,serif;font-size:1.12rem}
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.category-card{background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:24px;min-height:155px}
.category-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:color-mix(in srgb,var(--primary) 15%,var(--surface));color:var(--primary-2);font-weight:900}
.category-card h3{font-family:"STIX Two Text",Georgia,serif;font-size:1.3rem;margin:16px 0 6px}
.category-card p{color:var(--muted);margin:0}
.author-block{display:grid;grid-template-columns:300px 1fr;gap:44px;align-items:center}
.author-photo{border-radius:28px;overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);background:var(--surface)}
.author-photo img{width:100%;aspect-ratio:4/5;object-fit:cover;object-position:center 20%}
.author-copy h2{font-family:"STIX Two Text",Georgia,serif;font-size:clamp(2.2rem,4vw,3.5rem);margin:0 0 16px}
.author-copy p{color:var(--muted);font-size:1.04rem}
.newsletter{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;background:linear-gradient(135deg,#0f2b59,#14274a);color:white;border-radius:26px;padding:38px}
.newsletter h2{font-family:"STIX Two Text",Georgia,serif;font-size:2.2rem;margin:0 0 8px}
.newsletter p{color:#bdd0e8;margin:0}
.subscribe-form{display:flex;gap:10px}
.subscribe-form input,.search-input{
  min-height:46px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);padding:0 15px;outline:none;
}
.subscribe-form input{min-width:260px;background:#fff;color:#0f172a}
.page-hero{padding:74px 0 36px}
.page-hero p{color:var(--muted);font-size:1.08rem;max-width:760px}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:22px 0 28px}
.filter-row{display:flex;flex-wrap:wrap;gap:8px}
.filter-btn{border:1px solid var(--border);background:var(--surface);color:var(--muted);padding:9px 13px;border-radius:999px;cursor:pointer;font-weight:700}
.filter-btn.active{background:var(--primary);border-color:var(--primary);color:white}
.listing{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.article-hero{padding:74px 0 34px;max-width:900px}
.article-hero h1{font-size:clamp(2.8rem,6vw,5rem)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:52px}
.article-body{font-family:"STIX Two Text",Georgia,serif;font-size:1.18rem}
.article-body h2{font-size:2rem;margin-top:2.3em}
.article-body pre{overflow:auto;background:#06101e;color:#dcecff;border:1px solid #1d3654;border-radius:16px;padding:22px;font-family:"IBM Plex Mono",monospace;font-size:.9rem}
.article-body blockquote{margin:30px 0;padding:18px 22px;border-left:4px solid var(--primary);background:var(--surface-2);border-radius:0 14px 14px 0}
.toc{position:sticky;top:104px;height:max-content;border-left:1px solid var(--border);padding-left:22px}
.toc strong{display:block;margin-bottom:10px}
.toc a{display:block;color:var(--muted);padding:7px 0}
.toc a:hover{color:var(--primary-2)}
.site-footer{border-top:1px solid var(--border);padding:54px 0 28px;background:var(--surface)}
.footer-grid{display:grid;grid-template-columns:1.2fr repeat(3,.8fr);gap:28px}
.footer-grid h4{margin:0 0 12px}
.footer-grid a{display:block;color:var(--muted);padding:5px 0}
.footer-bottom{margin-top:36px;padding-top:22px;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:.9rem}
.empty-state{display:none;text-align:center;padding:50px;border:1px dashed var(--border);border-radius:18px;color:var(--muted)}
.mobile-menu{display:none}
@media(max-width:980px){
  .nav,.header-actions .primary-btn{display:none}
  .mobile-toggle{display:inline-grid;place-items:center}
  .hero-grid,.feature-card,.author-block,.article-layout,.newsletter{grid-template-columns:1fr}
  .hero-panel{min-height:340px}
  .cards,.listing,.category-grid{grid-template-columns:repeat(2,1fr)}
  .news-shell{grid-template-columns:1fr}
  .tabs{flex-direction:row;overflow:auto}
  .author-photo{max-width:360px}
  .toc{display:none}
  .newsletter{gap:18px}
  .mobile-menu{display:none;position:fixed;inset:76px 0 auto 0;background:var(--bg);border-bottom:1px solid var(--border);padding:18px;z-index:39}
  .mobile-menu.open{display:block}
  .mobile-menu a{display:block;padding:14px;border-radius:10px}
  .mobile-menu a:hover{background:var(--surface-2)}
}
@media(max-width:680px){
  .container{width:min(100% - 24px,var(--max))}
  .hero{padding-top:56px}
  .hero h1{font-size:3.2rem}
  .cards,.listing,.category-grid{grid-template-columns:1fr}
  .feature-body,.feature-visual{padding:26px}
  .feature-visual{min-height:280px}
  .section{padding:50px 0}
  .section-head{align-items:flex-start;flex-direction:column}
  .toolbar{align-items:stretch;flex-direction:column}
  .search-input{width:100%}
  .subscribe-form{flex-direction:column}
  .subscribe-form input{min-width:0;width:100%}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-grid>div:first-child{grid-column:1/-1}
  .footer-bottom{flex-direction:column}
}