*,*::before,*::after{box-sizing:border-box}:root{--color-text:#1a1a1a;--color-text-secondary:#666;--color-bg:#fff;--color-accent:#2563eb;--color-accent-hover:#1d4ed8;--color-border:#e5e5e5;--max-width:800px;--spacing:1.5rem}html{font-size:16px;line-height:1.6}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,segoe ui,Roboto,Oxygen,Ubuntu,sans-serif;color:var(--color-text);background:var(--color-bg);min-height:100vh;display:flex;flex-direction:column}main{flex:1;width:100%;max-width:var(--max-width);margin:0 auto;padding:var(--spacing)}a{color:var(--color-accent);text-decoration:none}a:hover{color:var(--color-accent-hover);text-decoration:underline}.site-header{border-bottom:1px solid var(--color-border)}.nav-container{max-width:var(--max-width);margin:0 auto;padding:var(--spacing);display:flex;justify-content:space-between;align-items:center}.site-title{font-size:1.25rem;font-weight:600;color:var(--color-text)}.site-title:hover{text-decoration:none;color:var(--color-accent)}.nav-menu{list-style:none;margin:0;padding:0;display:flex;gap:1.5rem}.nav-menu a{color:var(--color-text-secondary)}.nav-menu a:hover,.nav-menu a.active{color:var(--color-accent)}.lang-switcher{list-style:none;margin:0;padding:0;display:flex;gap:.5rem}.lang-switcher a{color:var(--color-text-secondary);padding:.25rem .5rem;border-radius:4px;font-size:.875rem}.lang-switcher a:hover{background:var(--color-border);text-decoration:none}.lang-switcher a.active{color:var(--color-accent);font-weight:600}.site-footer{border-top:1px solid var(--color-border);margin-top:auto}.footer-container{max-width:var(--max-width);margin:0 auto;padding:var(--spacing);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.footer-container p{margin:0;color:var(--color-text-secondary);font-size:.875rem}.footer-nav{display:flex;gap:1.5rem}.footer-nav a{color:var(--color-text-secondary);font-size:.875rem}.hero{text-align:center;padding:4rem 0}.hero h1{font-size:2.5rem;margin:0 0 1rem}.hero-tagline{font-size:1.25rem;color:var(--color-text-secondary);margin:0}.page-header h1{margin:0 0 2rem}.page-content{line-height:1.8}.page-content h2{margin-top:2rem}.page-content p{margin:1rem 0}.page-content ul,.page-content ol{padding-left:1.5rem}.home-content{padding:2rem 0}.pilot-form{margin-top:2rem;max-width:500px}.form-group{margin-bottom:1.25rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500}.form-group input,.form-group select{width:100%;padding:.75rem;font-size:1rem;border:1px solid var(--color-border);border-radius:4px;background:var(--color-bg);color:var(--color-text)}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 2px rgba(37,99,235,.1)}.form-hint{display:block;margin-top:.25rem;font-size:.875rem;color:var(--color-text-secondary)}.btn-submit{padding:.875rem 1.5rem;font-size:1rem;font-weight:500;color:#fff;background:var(--color-accent);border:none;border-radius:4px;cursor:pointer;transition:background .2s}.btn-submit:hover{background:var(--color-accent-hover)}.btn-submit:disabled{opacity:.6;cursor:not-allowed}.form-message{margin-top:1rem;padding:.75rem;border-radius:4px}.form-message:empty{display:none}.form-message.success{background:#ecfdf5;color:#065f46}.form-message.error{background:#fef2f2;color:#991b1b}@media(max-width:600px){.nav-container{flex-direction:column;gap:1rem}.footer-container{flex-direction:column;text-align:center}.hero h1{font-size:2rem}}