:root {
    --primary: #0056b3;
    --primary-hover: #004494;
    --primary-light: rgba(0, 86, 179, 0.08);
    --bg-main: #ffffff;
    --bg-alt: #f8fafc;
    --text: #0f172a;
    --text-light: #475569;
    --border: #e2e8f0;
    --success: #10b981;
    --error: #ef4444;
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 6px -1px rgba(15, 23, 42, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-family: var(--font-sans); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; }
body { background-color: var(--bg-main); overflow-x: hidden; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }

/* Navigation */
.navbar { position: fixed; top: 0; width: 100%; background: rgba(255, 255, 255, 0.8); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid rgba(226, 232, 240, 0.8); z-index: 1000; transition: var(--transition); }
.nav-container { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; padding: 16px 24px; }
.logo { display: flex; align-items: center; text-decoration: none; }
.nav-logo { max-height: 38px; width: auto; display: block; }
.nav-links { display: flex; gap: 32px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text-light); font-weight: 500; font-size: 0.95rem; transition: var(--transition); }
.nav-links a:hover { color: var(--primary); }
.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.menu-toggle .bar { width: 22px; height: 2px; background-color: var(--text); transition: var(--transition); }

/* Hero Section */
.hero { padding: 180px 0 120px; background: radial-gradient(circle at 80% 20%, rgba(0, 86, 179, 0.05) 0%, transparent 50%), radial-gradient(circle at 10% 80%, rgba(244, 247, 246, 1) 0%, #edf2f7 100%); text-align: center; }
.hero-content { max-width: 840px; margin: 0 auto; padding: 0 24px; }
.badge { display: inline-block; padding: 6px 16px; background-color: var(--primary-light); color: var(--primary); border-radius: 100px; font-size: 0.85rem; font-weight: 600; letter-spacing: 0.02em; margin-bottom: 24px; }
.hero h1 { font-size: clamp(2.25rem, 6vw, 3.75rem); font-weight: 850; letter-spacing: -0.03em; line-height: 1.15; margin-bottom: 24px; color: var(--text); }
.hero p { font-size: clamp(1.1rem, 2.5vw, 1.35rem); color: var(--text-light); max-width: 680px; margin: 0 auto 40px; font-weight: 400; }

/* Buttons */
.btn { display: inline-block; padding: 14px 32px; background-color: var(--primary); color: white; text-decoration: none; border-radius: var(--radius-sm); font-weight: 600; font-size: 0.95rem; border: none; cursor: pointer; transition: var(--transition); box-shadow: 0 4px 14px rgba(0, 86, 179, 0.2); }
.btn:hover { background-color: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0, 86, 179, 0.3); }
.btn-block { width: 100%; }

/* Sections */
.section { padding: 120px 0; }
.section-alt { background-color: var(--bg-alt); }
.section-header { margin-bottom: 64px; }
.section-title { font-size: clamp(1.85rem, 4vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 16px; }
.section-subtitle { font-size: 1.15rem; color: var(--text-light); max-width: 720px; margin: 0 auto; }

/* Grid & Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 32px; }
.card { background: var(--bg-main); padding: 40px; border-radius: var(--radius-md); box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); color: inherit; text-decoration: none; position: relative; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(0, 86, 179, 0.2); }
.card-link { cursor: pointer; display: block; }
.card-link h3 { color: var(--primary); }
.card-icon { font-size: 2rem; margin-bottom: 24px; display: inline-block; }
.card h3 { margin-bottom: 16px; font-size: 1.3rem; font-weight: 700; }

/* Call To Action Box */
.cta-box { background: #ffffff; padding: 64px 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); border: 1px solid var(--border); max-width: 900px; margin: 0 auto; }

/* Form */
.form-container { max-width: 640px; margin: 0 auto; }
.modern-form { background: var(--bg-main); padding: 48px; border-radius: var(--radius-md); border: 1px solid var(--border); box-shadow: var(--shadow-md); }
.form-group { margin-bottom: 24px; }
.form-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 0.9rem; color: var(--text-light); }
.form-group input, .form-group textarea { width: 100%; padding: 14px 16px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-family: var(--font-sans); font-size: 0.95rem; background-color: var(--bg-alt); color: var(--text); transition: var(--transition); }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); background-color: var(--bg-main); box-shadow: 0 0 0 4px rgba(0, 86, 179, 0.1); }
.form-response { margin-top: 24px; padding: 14px; border-radius: var(--radius-sm); display: none; font-weight: 600; }
.form-response.success { display: block; background-color: #ecfdf5; color: #10b981; border: 1px solid #a7f3d0; }
.form-response.error { display: block; background-color: #fef2f2; color: #ef4444; border: 1px solid #fca5a5; }

/* Footer */
footer { background-color: #0f172a; color: #94a3b8; padding: 96px 0 32px; font-size: 0.95rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 64px; margin-bottom: 64px; }
.footer-logo { max-height: 40px; width: auto; display: block; margin-bottom: 24px; }
footer h4 { color: white; margin-bottom: 24px; font-size: 1.05rem; font-weight: 600; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #94a3b8; text-decoration: none; transition: var(--transition); }
.footer-links a:hover { color: white; }
.footer-bottom { text-align: center; padding-top: 32px; border-top: 1px solid #334155; font-size: 0.85rem; color: #64748b; }

/* Animations */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

@media (max-width: 968px) { .footer-grid { grid-template-columns: 1fr; gap: 40px; } }
@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .menu-toggle[aria-expanded="true"] .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .menu-toggle[aria-expanded="true"] .bar:nth-child(2) { opacity: 0; }
    .menu-toggle[aria-expanded="true"] .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .nav-links { position: absolute; top: 100%; left: 0; width: 100%; background: rgba(255, 255, 255, 0.98); backdrop-filter: blur(16px); flex-direction: column; gap: 0; box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05); max-height: 0; overflow: hidden; transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1); }
    .nav-links.active { max-height: 320px; border-bottom: 1px solid var(--border); }
    .nav-links li { width: 100%; text-align: center; }
    .nav-links a { display: block; padding: 16px; }
    .modern-form { padding: 32px 24px; }
    .section { padding: 80px 0; }
    .hero { padding: 140px 0 80px; }
}