:root{color-scheme:dark light;--bg:#0b0b1f;--bg2:#121233;--card:#171740;--line:#2a2a5a;--text:#e9e9f7;--muted:#a6a6c8;--cyan:#4fd6ff;--violet:#8b6cf6;--pink:#ff6fc1;--accent:var(--cyan);--max:1100px}
@media (prefers-color-scheme:light){:root{--bg:#fafaff;--bg2:#f0f0fb;--card:#ffffff;--line:#dcdcee;--text:#17173a;--muted:#5c5c80;--cyan:#0b86b8;--violet:#5b3fd1;--pink:#c7368a}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,"Noto Sans","Noto Sans Arabic",sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
header.top{display:flex;align-items:center;justify-content:space-between;padding:1rem 0;gap:1rem;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:.7rem;font-weight:700;font-size:1.25rem;color:var(--text)}
.brand img{width:40px;height:40px;border-radius:50%}
nav a{margin-left:1.1rem;color:var(--muted);font-weight:500}nav a:hover{color:var(--text);text-decoration:none}
.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:2.5rem;align-items:center;padding:3.5rem 0 3rem}
@media(max-width:800px){.hero{grid-template-columns:1fr;text-align:center}.hero img{margin:0 auto}}
.hero img{width:min(100%,380px);height:auto;display:block;filter:drop-shadow(0 0 40px rgba(139,108,246,.35))}
h1{font-size:clamp(2.2rem,5vw,3.6rem);line-height:1.1;margin:.2rem 0 1rem;letter-spacing:-.02em}
h1 .grad,.grad{background:linear-gradient(90deg,var(--cyan),var(--violet) 55%,var(--pink));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{font-size:1.2rem;color:var(--muted);max-width:38rem}
.cta{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.6rem;justify-content:inherit}
.btn{display:inline-block;padding:.75rem 1.2rem;border-radius:.6rem;font-weight:600;border:1px solid var(--line);color:var(--text);background:var(--card)}
.btn.primary{background:linear-gradient(90deg,var(--cyan),var(--violet));color:#fff;border:0}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
section{padding:3rem 0;border-top:1px solid var(--line)}
h2{font-size:2rem;margin:0 0 .4rem;letter-spacing:-.01em}.sub{color:var(--muted);margin:0 0 1.8rem;max-width:44rem}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:.9rem;padding:1.2rem 1.3rem}
.card h3{margin:0 0 .4rem;font-size:1.1rem}.card p{margin:0;color:var(--muted);font-size:.98rem}
.tag{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--accent);margin-bottom:.4rem}
ol.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:.8rem}
ol.steps li{counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:.9rem;padding:1rem 1.2rem 1rem 3.6rem;position:relative}
ol.steps li::before{content:counter(s);position:absolute;left:1.1rem;top:1rem;width:1.8rem;height:1.8rem;border-radius:50%;display:grid;place-items:center;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--cyan),var(--pink))}
ol.steps b{display:block}ol.steps span{color:var(--muted)}
.principles{counter-reset:p}.principles .card{position:relative}.principles .card h3::before{counter-increment:p;content:counter(p,decimal-leading-zero) " ";color:var(--accent);font-variant-numeric:tabular-nums}
table{width:100%;border-collapse:collapse;font-size:.95rem}th,td{text-align:left;padding:.6rem .5rem;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-weight:600}
footer{border-top:1px solid var(--line);padding:2rem 0 3rem;color:var(--muted);font-size:.92rem}
footer .cols{display:flex;gap:2rem;flex-wrap:wrap;justify-content:space-between}
footer a{color:var(--muted)}footer a:hover{color:var(--text)}
.note{background:var(--bg2);border-left:3px solid var(--violet);padding:.8rem 1rem;border-radius:.4rem;color:var(--muted)}
code{font:.92em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--bg2);padding:.1em .35em;border-radius:.3em}
pre{background:var(--bg2);border:1px solid var(--line);border-radius:.6rem;padding:1rem;overflow:auto}
.prose{max-width:48rem}.prose h2{font-size:1.5rem;margin-top:2rem}.prose h3{margin-top:1.4rem}