:root {
            --bg-color: #030303;
            --text-main: #ffffff;
            --text-muted: #888888;
            --border-color: #1a1a1a;
        }

        body {
            font-family: 'Manrope', sans-serif;
            background-color: var(--bg-color);
            color: var(--text-main);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* Arka Plan Izgarası */
        .bg-grid {
            background-image:
                linear-gradient(to right, rgba(255,255,255,0.02) 1px, transparent 1px),
                linear-gradient(to bottom, rgba(255,255,255,0.02) 1px, transparent 1px);
            background-size: 60px 60px;
            mask-image: radial-gradient(circle at center, black, transparent 90%);
            -webkit-mask-image: radial-gradient(circle at center, black, transparent 90%);
        }

        /* Manyetik Buton */
        .magnetic-btn {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #ffffff;
            color: #000000;
            padding: 1.15rem 2.25rem;
            border-radius: 9999px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: background-color 0.3s ease, transform 0.1s;
            border: none;
            outline: none;
        }
        .magnetic-btn:hover { background: #e0e0e0; }
        .magnetic-btn-dark { background: transparent; color: #ffffff; border: 1px solid #333; }
        .magnetic-btn-dark:hover { background: #111; }

        /* Başlangıç Animasyon Durumları */
        .hero-title-word { display: inline-block; opacity: 0; transform: translateY(40px); }
        .hero-fade { opacity: 0; transform: translateY(20px); }

        /* Rozet Animasyonu (Infinitely Rotating) */
        .mxd-rotate {
            animation: rotate-slow 15s linear infinite;
        }
        @keyframes rotate-slow {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        /* Hero Devasa Arka Plan Marquee */
        .hero-giant-marquee {
            animation: marquee-fast var(--marquee-speed, 100s) linear infinite;
        }
        @keyframes marquee-fast {
            0% { transform: translateX(0%); }
            100% { transform: translateX(-50%); }
        }

        /* Interactive Parallax / Floating Center Piece Wrapper */
        .centerpiece-wrapper {
            perspective: 1000px;
        }
        .centerpiece-inner {
            transform-style: preserve-3d;
            transition: transform 0.2s ease-out;
            animation: float 6s ease-in-out infinite;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-15px) rotate(2deg); }
        }

        /* Marquee Item */
        .marquee__item {
            display: inline-flex;
            align-items: center;
            gap: 2rem;
            padding: 0.05em 0.4em;
            flex-shrink: 0;
        }
        .marquee__item .marquee__text {
            color: #ffffff;
            margin: 0;
        }

        /* Metin Seçim Rengi */
        ::selection { background: #f5b700; color: #000000; }
        ::-moz-selection { background: #f5b700; color: #000000; }

        /* Referanslar - Testimonial Kart */
        .testi-card {
            background: #0d0d0d;
            border: 1px solid #1e1e1e;
            border-radius: 1.5rem;
            padding: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            height: 100%;
            transition: border-color 0.3s ease;
        }
        .testi-card:hover { border-color: #333; }
        .testi-card__top {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .testi-avatar {
            width: 80px;
            height: 80px;
            border-radius: 9999px;
            object-fit: cover;
            border: 2px solid #2a2a2a;
        }
        .testi-logo-wrap { display: flex; align-items: center; }
        .testi-company-name {
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: #555;
            border: 1px solid #222;
            padding: 0.4rem 0.8rem;
            border-radius: 9999px;
        }
        .testi-text p {
            color: #aaa;
            font-size: 1rem;
            line-height: 1.75;
        }
        .testi-author { margin-top: auto; }
        .testi-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: #ffffff;
            margin: 0 0 0.25rem;
        }
        .testi-position {
            font-size: 0.875rem;
            color: #555;
            margin: 0;
        }
        /* Aktif olmayan kartlar blur */
        .testi-swiper .swiper-slide:not(.swiper-slide-active) .testi-card {
            filter: blur(3px);
            opacity: 0.35;
            transition: filter 0.4s ease, opacity 0.4s ease;
        }
        .testi-swiper .swiper-slide-active .testi-card {
            filter: none;
            opacity: 1;
        }
        /* Nav Butonları */
        .testi-nav-btn {
            width: 48px;
            height: 48px;
            border-radius: 9999px;
            border: 1px solid #333;
            background: transparent;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.3s ease, border-color 0.3s ease;
        }
        .testi-nav-btn:hover { background: #1a1a1a; border-color: #555; }

        /* Scrollbar */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: #000; }
        ::-webkit-scrollbar-thumb { background: #333; border-radius: 4px; }
        ::-webkit-scrollbar-thumb:hover { background: #555; }

        /* STACKING SECTION STİLLERİ - KARTLAR ÜST ÜSTE BİNER */
        .stack-container {
            position: relative;
            padding-bottom: 100px;
        }
        .stack-card {
            position: sticky;
            border-radius: 2.5rem;
            min-height: 480px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            box-shadow: 0 -20px 40px rgba(0,0,0,0.8);
            transition: transform 0.3s ease;
        }

        /* Kademeli Yapışma Yükseklikleri */
        .stack-card:nth-child(1) { top: 100px; z-index: 1; }
        .stack-card:nth-child(2) { top: 120px; z-index: 2; }
        .stack-card:nth-child(3) { top: 140px; z-index: 3; }
        .stack-card:nth-child(4) { top: 160px; z-index: 4; }
        .stack-card:nth-child(5) { top: 180px; z-index: 5; }
        .stack-card:nth-child(6) { top: 200px; z-index: 6; }

        /* Menü Stilleri */
        .menu-link-item {
            color: #9ca3af;
            transition: all 0.4s ease;
            display: inline-block;
            font-weight: 800;
        }
        .menu-link-item:hover {
            color: #ffffff;
            transform: translateX(20px);
        }

        .hamburger-line { transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease; }
        .menu-open .line-1 { transform: translateY(6px) rotate(45deg); }
        .menu-open .line-2 { opacity: 0; }
        .menu-open .line-3 { transform: translateY(-6px) rotate(-45deg); }

        /* SWIPE SLIDER ÖZEL KART ESTETİĞİ */
        .service-el {
            --service-expo-height: 90px;
            background: rgba(108, 53, 178, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: background-color 0.45s ease, border-color 0.45s ease;
        }
        .service-el:hover {
            background: rgba(108, 53, 178, 0.08);
            border-color: rgba(108, 53, 178, 0.3);
        }
        /* Hover durumunda içeriğin yukarı süzülmesi */
        .service-el .icon-wrapper,
        .service-el .title,
        .service-el .expo {
            transform: translateY(var(--service-expo-height));
            transition: transform 0.45s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.45s ease;
        }
        .service-el:hover .icon-wrapper,
        .service-el:hover .title,
        .service-el:hover .expo {
            transform: translateY(0);
        }
        .service-el:hover .expo {
            opacity: 1 !important;
        }
        /* Hover durumunda sağ üstte beliren küre animasyonu */
        .service-el .image-sphere {
            transform: translate(40%, -40%) scale(0.7);
            opacity: 0.1;
            transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.6s ease;
        }
        .service-el:hover .image-sphere {
            transform: translate(15%, -15%) scale(1);
            opacity: 0.35;
        }