:root{font-family:Segoe UI,Inter,sans-serif;color:#0f172a;background:#f8fafc}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit}.page{min-height:100vh}.nav-wrap{position:sticky;top:0;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#ffffffeb;border-bottom:1px solid #e2e8f0}.nav{margin:0 auto;max-width:1100px;display:flex;align-items:center;gap:1rem;padding:.9rem 1rem}.brand{font-weight:700;margin-right:auto}.login-btn{background:#0f172a;color:#fff;padding:.5rem .9rem;border-radius:8px}.container{max-width:1100px;margin:0 auto;padding:2rem 1rem 4rem}.hero{padding:3rem 0 2rem}.kicker{color:#0369a1;font-weight:600}.hero h1{margin:.3rem 0;font-size:clamp(2rem,4vw,3.2rem)}.tagline{color:#334155;font-size:1.1rem;max-width:760px}.section{margin-top:2.5rem}.grid{margin-top:1rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}.card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:1rem;box-shadow:0 6px 20px #0f172a0d}.cta{display:inline-block;margin-top:1rem;border:none;background:#0ea5e9;color:#fff;padding:.65rem 1rem;border-radius:9px;font-weight:600;cursor:pointer}.contact{text-align:center}.admin-page{min-height:100vh;padding:2rem 1rem;max-width:900px;margin:0 auto}.admin-head{display:flex;justify-content:space-between;align-items:center;gap:1rem}.back-link{border:1px solid #cbd5e1;background:#fff;padding:.45rem .8rem;border-radius:8px;cursor:pointer}.admin-grid{margin-top:1.5rem;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.8rem}.module-btn{background:#f1f5f9;border:1px solid #cbd5e1;border-radius:10px;padding:.9rem;color:#334155;font-weight:600}.note{margin-top:1rem;color:#64748b}.login-form{margin-top:1rem;max-width:440px;display:grid;gap:.8rem;background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:1rem}.login-form label{display:grid;gap:.35rem;color:#334155}.login-form input{border:1px solid #cbd5e1;border-radius:8px;padding:.6rem .7rem}.error-text{color:#b91c1c;margin:0}