:root{--blue:#0B4EB7;--blue-dark:#07377F;--red:#FF2222;--yellow:#FFB600;--black:#000000;--ink:#171717;--muted:#5F6670;--soft:#EBEEF3;--line:#D8DCE3;--white:#FFFFFF;--radius:22px;--shadow:0 18px 45px rgba(0,0,0,.12);--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--white);font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;line-height:1.6}a{color:inherit}.container{width:min(calc(100% - 2rem),var(--max));margin:auto}header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:#fffffff5;backdrop-filter:blur(14px)}.nav{display:flex;min-height:76px;align-items:center;justify-content:space-between;gap:1.5rem}.brand{display:flex;align-items:center;gap:.8rem;color:var(--black);text-decoration:none}.brand img{flex:0 0 auto;border-radius:4px}.brand strong,.brand small{display:block}.brand strong{color:var(--black);font-size:1.05rem}.brand small{color:var(--muted);font-size:.72rem}nav{display:flex;align-items:center;gap:.15rem}nav a{padding:.65rem .7rem;border-radius:10px;color:var(--black);font-size:.92rem;font-weight:800;text-decoration:none}nav a:hover{background:var(--soft);color:var(--blue)}.hero{padding:6.5rem 0;background:radial-gradient(circle at 86% 10%,rgba(255,182,0,.26),transparent 25rem),linear-gradient(135deg,var(--soft),var(--white) 62%)}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;align-items:center;gap:4rem}.eyebrow{margin:0 0 .7rem;color:var(--red);font-size:.8rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase}h1,h2,h3{margin-top:0;color:var(--black);line-height:1.12}h1{font-size:clamp(2.7rem,6vw,5rem);letter-spacing:-.055em}h2{font-size:clamp(2rem,4vw,3.15rem);letter-spacing:-.035em}h3{font-size:1.25rem}.lead{max-width:680px;color:var(--muted);font-size:clamp(1.05rem,2vw,1.25rem)}.button-row{display:flex;flex-wrap:wrap;gap:.85rem;margin-top:1.75rem}.button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:.75rem 1.15rem;border:2px solid transparent;border-radius:999px;background:var(--red);color:var(--white);font-weight:900;text-decoration:none;transition:transform .2s ease,background .2s ease}.button:hover{background:var(--blue);transform:translateY(-2px)}.button.secondary{border-color:var(--blue);background:var(--white);color:var(--blue)}.button.secondary:hover{border-color:var(--yellow);background:var(--yellow);color:var(--black)}.hero-card{padding:3rem;border:5px solid var(--black);border-radius:28px;background:var(--blue);color:var(--white);box-shadow:var(--shadow)}.hero-card strong{display:block;color:var(--white);font-size:clamp(1.5rem,3vw,2.25rem);line-height:1.2}.hero-card p{color:#ffffffd1}.sigma{display:grid;width:64px;height:64px;margin-bottom:2rem;place-items:center;border:4px solid var(--black);border-radius:8px;background:var(--yellow);color:var(--black);font:900 2rem Georgia,serif}.section{padding:5rem 0}.soft{background:var(--soft)}.grid{display:grid;gap:1.25rem}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.card{padding:1.6rem;border:2px solid var(--black);border-radius:var(--radius);background:var(--white);box-shadow:0 10px 28px #00000012}.card a{color:var(--blue);font-weight:900;text-decoration:none}.card a:hover{color:var(--red)}.level{padding:2rem;border:4px solid var(--black);border-radius:24px;background:var(--blue);color:var(--white)}.level:nth-child(2){background:var(--red)}.level h3{color:var(--white);font-size:2rem}.level p{color:#ffffffd9}.level .button.secondary{border-color:var(--white);background:var(--white);color:var(--black)}.level .button.secondary:hover{border-color:var(--yellow);background:var(--yellow)}.page-hero{padding:5rem 0 3.5rem;background:radial-gradient(circle at 80% 10%,rgba(255,182,0,.22),transparent 28rem),linear-gradient(135deg,var(--soft),var(--white))}.courses{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem;margin-top:2rem}.course{padding:1.25rem;border:3px solid var(--black);border-radius:16px;background:var(--white);color:var(--blue);font-size:1.1rem;font-weight:900;text-align:center;text-decoration:none;transition:transform .2s ease,background .2s ease}.course:hover{background:var(--yellow);color:var(--black);transform:translateY(-2px)}.placeholder{display:grid;min-height:300px;place-items:center;padding:2rem;border:3px dashed var(--blue);border-radius:var(--radius);background:var(--soft);color:var(--muted);text-align:center}form{display:grid;gap:1rem}label{display:grid;gap:.35rem;color:var(--black);font-weight:800}input,textarea,select{width:100%;padding:.85rem .95rem;border:2px solid var(--black);border-radius:10px;background:var(--white);color:var(--black);font:inherit}input:focus,textarea:focus,select:focus{outline:3px solid rgba(11,78,183,.25);border-color:var(--blue)}textarea{min-height:150px}footer{padding:3rem 0 1.5rem;border-top:8px solid var(--yellow);background:var(--black);color:#ffffffdb}footer a{color:var(--white)}.foot{display:flex;justify-content:space-between;gap:1rem}@media(max-width:1040px){nav{display:none}}@media(max-width:850px){.hero-grid,.grid.two{grid-template-columns:1fr}.hero{padding:4rem 0}}@media(max-width:760px){.grid.three,.courses{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.grid.three,.courses{grid-template-columns:1fr}.section{padding:3.5rem 0}.foot{flex-direction:column}}