:root {
            --header-h: 82px;
            --primary-dark: #0a1e3d;
            --primary-blue: #1a4d7a;
            --primary-cyan: #00d9ff;
            --accent-orange: #ff6b35;
            --neutral-100: #f5f7fa;
            --neutral-200: #e2e8f0;
            --neutral-700: #4a5568;
            --neutral-800: #2d3748;
            --gradient-primary: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-blue) 50%, var(--primary-cyan) 100%);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: var(--neutral-800);
            background: var(--neutral-100);
        }
        header { 
            background: url('images/banner.webp') center center / cover no-repeat;
            background-color: var(--primary-dark);
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            position: sticky; 
            top: 0; 
            z-index: 1000;
        }
        header::before { 
            content: ''; 
            position: absolute; 
            top: 0; left: 0; right: 0; bottom: 0; 
            background: linear-gradient(135deg, rgba(10, 30, 61, 0.7) 0%, rgba(10, 120, 190, 0.6) 100%);
            z-index: -1; 
        }
        .header-container { 
            max-width: 1200px; 
            margin: 0 auto; 
            padding: 1rem 2rem; 
            display: flex; 
            align-items: center; 
            justify-content: space-between;
            position: relative;
        }
        .logo-container { display: flex; align-items: center; gap: 1rem; }
        .logo-container img { height: 60px; }
        .company-name { color: #fff; font-size: 1.5rem; font-weight: 700; }
        nav { display: flex; gap: 2rem; }
        .nav-item { position: relative; }
        .nav-link { 
            color: rgba(255,255,255,0.95);
            text-decoration: none; 
            padding: 0.5rem 1rem; 
            display: block; 
            font-weight: 500;
            transition: all 0.3s;
            border-radius: 6px;
        }

	    /* Dropdown tetikleyicileri button olarak kullanınca (Hizmetler/Ürünler)
	       tarayıcı varsayılan button stili (beyaz arkaplan vb.) devreye girebiliyor.
	       Bu reset, butonu mevcut .nav-link görünümüne birebir uyarlar. */
	    button.nav-link {
	        background: none;
	        border: 0;
	        padding: 0.5rem 1rem; /* .nav-link ile aynı */
	        color: rgba(255,255,255,0.95);
	        cursor: pointer;
	        font: inherit;
	        text-align: left;
	        -webkit-appearance: none;
	        appearance: none;
	    }
	    button.nav-link:focus-visible {
	        outline: 2px solid rgba(0, 217, 255, 0.6);
	        outline-offset: 3px;
	    }
        .nav-link:hover { background: rgba(255,255,255,0.1); color: var(--primary-cyan); }
        .dropdown-menu { 
            position: absolute; 
            top: 100%; 
            left: 0; 
            background: white;
            min-width: 250px; 
            box-shadow: 0 10px 40px rgba(0,0,0,0.15);
            opacity: 0; 
            visibility: hidden; 
            transform: translateY(-10px); 
            transition: all 0.3s ease; 
            border-radius: 8px;
            border: 1px solid var(--neutral-200);
            z-index: 1000;
        }
        .nav-item:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
        .dropdown-menu a { 
            color: var(--neutral-800);
            padding: 0.75rem 1.5rem; 
            display: block; 
            text-decoration: none; 
            transition: all 0.3s;
            border-bottom: 1px solid var(--neutral-200);
        }
        .dropdown-menu a:last-child { border-bottom: none; }
        .dropdown-menu a:hover { background: var(--gradient-primary); color: white; padding-left: 2rem; }
        .mobile-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }
        .breadcrumb-container { 
            background: white;
            padding: 1rem 0; 
            border-bottom: none;
            position: sticky;
            top: var(--header-h, 82px);
            z-index: 999;
        }
        .breadcrumb-wrapper { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
        .breadcrumb { display: flex; align-items: center; list-style: none; padding: 0; margin: 0; flex-wrap: wrap; }
        .breadcrumb li { display: flex; align-items: center; }
        .breadcrumb a { color: var(--primary-cyan); text-decoration: none; transition: all 0.3s; font-weight: 500; font-size: 0.95rem; }
        .breadcrumb a:hover { color: var(--accent-orange); }
        .breadcrumb span { color: var(--neutral-700); margin: 0 0.5rem; }
        .breadcrumb strong { color: var(--neutral-700); font-weight: 600; font-size: 0.95rem; }
        .hero-section {
            background: var(--gradient-primary);
            color: white;
            padding: 4rem 2rem;
            text-align: center;
        }
        .hero-section h1 { font-size: 2.8rem; margin-bottom: 1rem; font-weight: 700; }
        .hero-section .subtitle { font-size: 1.3rem; opacity: 0.95; margin-bottom: 2rem; }
        .hero-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn {
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary {
            background: white;
            color: var(--primary-blue);
        }
        .btn-primary:hover {
            background: var(--accent-orange);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255,107,53,0.4);
        }
        .btn-secondary {
            background: transparent;
            color: white;
            border: 2px solid white;
        }
        .btn-secondary:hover {
            background: white;
            color: var(--primary-blue);
            transform: translateY(-3px);
        }
        main {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 2rem;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin: 3rem 0;
        }
        .feature-card {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            transition: all 0.3s;
        }
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(0,217,255,0.2);
        }
        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--gradient-primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            margin-bottom: 1rem;
        }
        .feature-title {
            font-size: 1.4rem;
            color: var(--primary-dark);
            margin-bottom: 1rem;
            font-weight: 600;
        }
        .feature-text {
            color: var(--neutral-700);
            line-height: 1.8;
        }
        .section {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            margin-bottom: 3rem;
        }
        .section-title {
            font-size: 2rem;
            color: var(--primary-dark);
            margin-bottom: 1.5rem;
            padding-bottom: 1rem;
            border-bottom: 3px solid var(--primary-cyan);
            display: inline-block;
        }
        .section-content {
            color: var(--neutral-700);
            line-height: 1.8;
            font-size: 1.05rem;
        }
        .section-content h3 {
            color: var(--primary-blue);
            margin: 2rem 0 1rem 0;
            font-size: 1.4rem;
        }
        .section-content p {
            margin-bottom: 1rem;
        }
        .section-content ul {
            margin: 1rem 0 1rem 2rem;
        }
        .section-content li {
            margin-bottom: 0.5rem;
        }
        .highlight-box {
            background: linear-gradient(135deg, #e8f4f8 0%, #d4edfa 100%);
            padding: 2rem;
            border-radius: 12px;
            border-left: 4px solid var(--primary-cyan);
            margin: 2rem 0;
        }
        .highlight-box h4 {
            color: var(--primary-dark);
            margin-bottom: 1rem;
            font-size: 1.3rem;
        }
        .download-box {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            margin: 1rem 0;
        }
        .download-link {
            display: block;
            padding: 1.5rem;
            background: linear-gradient(135deg, #e8f4f8 0%, #d4edfa 100%);
            border-radius: 8px;
            text-decoration: none;
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 1.1rem;
            margin: 1rem 0;
            transition: all 0.3s;
            border-left: 4px solid var(--primary-cyan);
        }
        .download-link:hover {
            transform: translateX(10px);
            box-shadow: 0 4px 15px rgba(0,217,255,0.3);
        }
        footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.9);
            padding: 3rem 2rem 1.5rem;
            margin-top: 4rem;
        }
        .footer-container { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        .footer-section h3 { color: var(--primary-cyan); margin-bottom: 1rem; }
        .footer-section ul { list-style: none; }
        .footer-section ul li { margin-bottom: 0.5rem; }
        .footer-section a { color: rgba(255,255,255,0.8); text-decoration: none; transition: color 0.3s; }
        .footer-section a:hover { color: var(--primary-cyan); }
        .footer-bottom { text-align: center; padding-top: 2rem; margin-top: 2rem; border-top: 1px solid rgba(255,255,255,0.1); }
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: var(--gradient-primary);
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 8px 25px rgba(0, 217, 255, 0.4);
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s;
            z-index: 998;
        }
        .back-to-top.visible { opacity: 1; visibility: visible; }
        .back-to-top:hover { transform: translateY(-5px) scale(1.1); }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            nav { 
                display: none; 
                position: absolute; 
                top: 100%; 
                left: 0; 
                right: 0; 
                background: var(--primary-dark); 
                flex-direction: column; 
                gap: 0; 
                padding: 1rem 0;
                box-shadow: 0 10px 30px rgba(0,0,0,0.3);
                z-index: 999;
            }
            nav.active { display: flex; }
            .nav-item { width: 100%; }
	            .nav-link { padding: 1rem 1.5rem; color: white; }
	            /* Mobilde de button tetikleyicilerin padding'i aynı olsun */
	            button.nav-link { padding: 1rem 1.5rem; width: 100%; }
            .dropdown-menu { 
                position: static; 
                opacity: 1; 
                visibility: visible; 
                transform: none; 
                box-shadow: none; 
                background: rgba(255,255,255,0.05);
                display: none;
            }
            .nav-item.active .dropdown-menu { display: block; }
            .dropdown-menu a { color: rgba(255,255,255,0.9); }
            .hero-section h1 { font-size: 2rem; }
            .hero-section .subtitle { font-size: 1.1rem; }
            .features-grid { grid-template-columns: 1fr; }
            .section { padding: 1.5rem; }
            .back-to-top { bottom: 15px; left: 15px; width: 45px; height: 45px; }
        }

.nav-link:focus-visible{outline:2px solid var(--primary-cyan);outline-offset:2px;}

@media (prefers-reduced-motion: reduce){*{animation:none !important;transition:none !important;scroll-behavior:auto !important;}}

@media (max-width: 768px){.nav-link:hover{transform:none;}}