*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,sans-serif;color:#1d2433;background:#f6f7fb}
.wrap{max-width:1100px;margin:0 auto;padding:0 20px}section.wrap{padding-top:40px;padding-bottom:20px}
.hdr{background:#fff;border-bottom:1px solid #e3e6ee;position:sticky;top:0;z-index:5}
.nav{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;min-height:60px}
.logo{font-weight:700;font-size:1.25rem;color:#3949ab;text-decoration:none}
.links a{margin-left:20px;color:#1d2433;text-decoration:none}.menu-btn{display:none}
.hero{background:linear-gradient(135deg,#3949ab,#00897b);color:#fff;padding:70px 0}
.hero h1{font-size:clamp(1.8rem,5vw,3rem);margin:0 0 10px}
.btn{display:inline-block;background:#ff7043;color:#fff;border:0;padding:12px 22px;border-radius:8px;font-size:1rem;text-decoration:none;cursor:pointer}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.card{background:#fff;border-radius:12px;padding:18px;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.tabs{display:flex;gap:8px;margin-bottom:12px}.tabs button{padding:8px 16px;border:1px solid #3949ab;background:#fff;color:#3949ab;border-radius:20px;cursor:pointer}
.tabs button[aria-selected=true]{background:#3949ab;color:#fff}.panel{background:#fff;padding:16px;border-radius:12px}
form{display:grid;gap:6px;max-width:520px}label{display:grid;gap:4px;font-weight:600}
input,textarea{font:inherit;padding:10px;border:1px solid #c5cad6;border-radius:8px;width:100%}
.invalid{border-color:#d32f2f}.err{color:#d32f2f;font-size:.9rem;min-height:1em}
.success{background:#e8f5e9;color:#1b5e20;padding:12px;border-radius:8px;max-width:520px}
.ftr{margin-top:40px;background:#1d2433;color:#cfd3dc;padding:24px 0;font-size:.9rem}
@media (max-width:640px){.menu-btn{display:block;background:none;border:1px solid #c5cad6;border-radius:6px;padding:6px 12px}
.links{display:none;width:100%;padding:8px 0}.links.open{display:flex;flex-direction:column}.links a{margin:6px 0}}