:root {
            --primary: #0f4c81;
            --secondary: #ff5722;
            --accent: #ffd600;
            --light: #f5f7fa;
            --dark: #0a1929;
            --shadow: 0 6px 18px rgba(0,0,0,0.12);
            --border-radius: 12px;
            --transition: all 0.35s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
        }
        body {
            background-color: #f0f2f5;
            color: var(--dark);
            line-height: 1.85;
            font-size: 16px;
            letter-spacing: 0.3px;
        }
        .container {
            width: 100%;
            max-width: 1350px;
            margin: 0 auto;
            padding: 0 25px;
        }
        header {
            background: linear-gradient(135deg, var(--primary), #0a2463);
            color: white;
            padding: 18px 0;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 9999;
            transition: var(--transition);
        }
        header:hover {
            box-shadow: 0 10px 25px rgba(0,0,0,0.18);
        }
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        .logo {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo span {
            color: var(--accent);
            font-style: italic;
        }
        .logo .edition {
            font-size: 1.1rem;
            font-weight: 500;
            text-transform: capitalize;
            background-color: rgba(255,255,255,0.18);
            padding: 5px 14px;
            border-radius: 30px;
        }
        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        nav ul {
            display: flex;
            list-style: none;
            gap: 35px;
            margin-right: 25px;
        }
        nav a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            font-size: 1.1rem;
            padding: 8px 0;
            position: relative;
        }
        nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--accent);
            transition: var(--transition);
        }
        nav a:hover {
            color: var(--accent);
        }
        nav a:hover::after {
            width: 100%;
        }
        .btn {
            padding: 12px 26px;
            border-radius: 30px;
            border: none;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
            font-size: 1.05rem;
            text-align: center;
            letter-spacing: 0.5px;
        }
        .btn-download {
            background-color: var(--secondary);
            color: white;
            margin-right: 12px;
            box-shadow: 0 5px 15px rgba(255,87,34,0.35);
        }
        .btn-download:hover {
            background-color: #e64a19;
            transform: translateY(-4px);
            box-shadow: 0 8px 22px rgba(255,87,34,0.45);
        }
        .btn-login {
            background-color: white;
            color: var(--primary);
            box-shadow: 0 5px 15px rgba(255,255,255,0.25);
        }
        .btn-login:hover {
            background-color: #f8f9fa;
            transform: translateY(-4px);
            box-shadow: 0 8px 22px rgba(255,255,255,0.35);
        }
        .hamburger {
            display: none;
            font-size: 2rem;
            cursor: pointer;
            color: white;
            background: none;
            border: none;
        }
        .hero {
            background: url('https://via.placeholder.com/1920x700?text=Tank+Blitz+Heroes+Military+Action') center/cover no-repeat;
            padding: 140px 0;
            text-align: center;
            color: white;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(15,76,129,0.85), rgba(10,36,99,0.85));
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 70px;
            background: linear-gradient(to top, #f0f2f5, transparent);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 1100px;
            margin: 0 auto;
        }
        .hero h1 {
            font-size: 4.2rem;
            margin-bottom: 32px;
            text-shadow: 0 5px 15px rgba(0,0,0,0.45);
            line-height: 1.25;
        }
        .hero h1 span {
            color: var(--accent);
        }
        .hero p {
            font-size: 1.45rem;
            margin-bottom: 50px;
            text-shadow: 0 4px 10px rgba(0,0,0,0.3);
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero .btn-group {
            display: flex;
            justify-content: center;
            gap: 25px;
            flex-wrap: wrap;
        }
        .hero .btn {
            padding: 16px 38px;
            font-size: 1.25rem;
        }
        .hero .btn-download {
            display: flex;
            align-items: center;
            gap: 15px;
            justify-content: center;
        }
        .hero .btn-download svg {
            width: 28px;
            height: 28px;
        }
        main {
            padding: 100px 0;
        }
        .section {
            margin-bottom: 120px;
            position: relative;
        }
        .section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: 15%;
            width: 70%;
            height: 2px;
            background-color: rgba(15,76,129,0.18);
        }
        .section:last-child::after {
            display: none;
        }
        .section-title {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 50px;
            padding-bottom: 18px;
            border-bottom: 5px solid var(--secondary);
            display: inline-block;
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 30%;
            height: 5px;
            background-color: var(--accent);
        }
        .content-card {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 50px;
            margin-bottom: 50px;
            transition: var(--transition);
            border-top: 8px solid var(--primary);
        }
        .content-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 22px 40px rgba(0,0,0,0.2);
        }
        .content-card h3 {
            font-size: 2.1rem;
            color: var(--primary);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .content-card h3 svg {
            width: 36px;
            height: 36px;
            color: var(--secondary);
        }
        .content-card h4 {
            font-size: 1.6rem;
            color: var(--dark);
            margin: 40px 0 25px;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .content-card h4::before {
            content: '🎯';
            font-size: 1.4rem;
        }
        .content-card p {
            margin-bottom: 32px;
            font-size: 1.18rem;
            color: #2d3748;
            text-align: justify;
        }
        .content-card p strong {
            color: var(--primary);
            font-weight: 600;
        }
        .content-card ul {
            margin-left: 40px;
            margin-bottom: 40px;
        }
        .content-card li {
            margin-bottom: 22px;
            font-size: 1.15rem;
            color: #2d3748;
            position: relative;
            padding-left: 22px;
        }
        .content-card li::before {
            content: '✅';
            position: absolute;
            left: -35px;
            color: var(--secondary);
            font-weight: bold;
        }
        .content-card ol {
            margin-left: 40px;
            margin-bottom: 40px;
        }
        .content-card ol li {
            margin-bottom: 22px;
            font-size: 1.15rem;
            color: #2d3748;
            padding-left: 15px;
        }
        .content-card ol li::before {
            content: none;
        }
        .image-container {
            margin: 50px 0;
            text-align: center;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .image-container img {
            max-width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        .image-container:hover img {
            transform: scale(1.04);
        }
        .image-container p {
            background-color: var(--light);
            padding: 22px;
            margin: 0;
            font-style: italic;
            color: #4a5568;
            font-size: 1.12rem;
            border-top: 1px solid rgba(0,0,0,0.1);
            text-align: center;
        }
        .highlight {
            background-color: rgba(255,87,34,0.1);
            border-left: 8px solid var(--secondary);
            padding: 28px 32px;
            margin: 40px 0;
            border-radius: 0 var(--border-radius) var(--border-radius) 0;
            position: relative;
        }
        .highlight::before {
            content: '🔥';
            position: absolute;
            top: 22px;
            right: 30px;
            font-size: 1.8rem;
        }
        .highlight strong {
            color: var(--primary);
            font-size: 1.3rem;
            display: block;
            margin-bottom: 12px;
        }
        .highlight p {
            margin-bottom: 0;
            color: #1a202c;
            text-align: left;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 35px;
            margin: 50px 0;
        }
        .stat-card {
            background-color: rgba(15,76,129,0.08);
            padding: 38px;
            border-radius: var(--border-radius);
            text-align: center;
            transition: var(--transition);
            border: 1px solid rgba(15,76,129,0.15);
        }
        .stat-card:hover {
            background-color: rgba(15,76,129,0.12);
            transform: translateY(-8px);
            box-shadow: var(--shadow);
        }
        .stat-value {
            font-size: 3.2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .stat-label {
            font-size: 1.2rem;
            color: #4a5568;
            font-weight: 500;
        }
        .tabs {
            display: flex;
            border-bottom: 3px solid #dee2e6;
            margin-bottom: 45px;
            overflow-x: auto;
            scrollbar-width: none;
            padding-bottom: 10px;
        }
        .tabs::-webkit-scrollbar {
            display: none;
        }
        .tab {
            padding: 18px 35px;
            cursor: pointer;
            background-color: transparent;
            border: none;
            font-weight: 600;
            color: #4a5568;
            transition: var(--transition);
            white-space: nowrap;
            font-size: 1.2rem;
            border-bottom: 4px solid transparent;
        }
        .tab:hover {
            color: var(--primary);
            background-color: rgba(15,76,129,0.05);
        }
        .tab.active {
            background-color: rgba(15,76,129,0.08);
            color: var(--primary);
            border-bottom: 4px solid var(--secondary);
            border-radius: 10px 10px 0 0;
        }
        .tab-content {
            display: none;
            animation: fadeIn 0.6s ease;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .tab-content.active {
            display: block;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 40px;
            margin: 70px 0;
        }
        .feature-card {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 40px;
            text-align: center;
            transition: var(--transition);
            border-bottom: 6px solid var(--accent);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 8px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        .feature-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 18px 35px rgba(0,0,0,0.2);
        }
        .feature-icon {
            font-size: 3.8rem;
            color: var(--primary);
            margin-bottom: 30px;
            transition: var(--transition);
        }
        .feature-card:hover .feature-icon {
            color: var(--secondary);
            transform: scale(1.2);
        }
        .feature-card h3 {
            font-size: 1.7rem;
            color: var(--dark);
            margin-bottom: 22px;
            display: block;
        }
        .feature-card p {
            font-size: 1.1rem;
            color: #4a5568;
            margin-bottom: 0;
            text-align: center;
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 45px;
            margin: 70px 0;
        }
        .testimonial-card {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 45px;
            transition: var(--transition);
            position: relative;
        }
        .testimonial-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.15);
        }
        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 25px;
            left: 35px;
            font-size: 5rem;
            color: rgba(15,76,129,0.12);
            font-family: Georgia, serif;
        }
        .testimonial-text {
            font-style: italic;
            color: #2d3748;
            margin-bottom: 35px;
            position: relative;
            z-index: 1;
            font-size: 1.15rem;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 22px;
        }
        .author-avatar {
            width: 75px;
            height: 75px;
            border-radius: 50%;
            background-color: rgba(15,76,129,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
        }
        .author-info h4 {
            font-size: 1.3rem;
            color: var(--dark);
            margin: 0 0 8px 0;
        }
        .author-info p {
            font-size: 1.05rem;
            color: #4a5568;
            margin: 0;
            text-align: left;
        }
        .download-container {
            background: linear-gradient(135deg, var(--primary), #0a2463);
            border-radius: var(--border-radius);
            padding: 80px;
            text-align: center;
            color: white;
            margin: 80px 0;
            box-shadow: 0 15px 40px rgba(15,76,129,0.3);
        }
        .download-container h3 {
            font-size: 2.7rem;
            margin-bottom: 35px;
            color: white;
        }
        .download-container p {
            font-size: 1.35rem;
            max-width: 800px;
            margin: 0 auto 50px;
            color: rgba(255,255,255,0.92);
            text-align: center;
        }
        .download-buttons {
            display: flex;
            justify-content: center;
            gap: 35px;
            flex-wrap: wrap;
        }
        .download-btn {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 22px 42px;
            border-radius: 35px;
            background-color: white;
            color: var(--primary);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            font-size: 1.3rem;
            box-shadow: 0 6px 20px rgba(255,255,255,0.25);
        }
        .download-btn:hover {
            transform: translateY(-6px);
            box-shadow: 0 10px 30px rgba(255,255,255,0.35);
            background-color: #f8f9fa;
        }
        .download-btn svg {
            width: 32px;
            height: 32px;
        }
        .download-note {
            margin-top: 40px;
            font-size: 1.1rem;
            color: rgba(255,255,255,0.85);
        }
        footer {
            background-color: var(--dark);
            color: white;
            padding: 100px 0 60px;
        }
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 70px;
            margin-bottom: 80px;
        }
        .footer-col h3 {
            font-size: 1.8rem;
            margin-bottom: 35px;
            color: var(--accent);
            padding-bottom: 18px;
            border-bottom: 3px solid var(--secondary);
            display: inline-block;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 22px;
        }
        .footer-col a {
            color: #cbd5e0;
            text-decoration: none;
            transition: var(--transition);
            font-size: 1.1rem;
            display: inline-block;
            padding: 5px 0;
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 12px;
        }
        .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            margin-top: 35px;
        }
        .tag {
            background-color: #1e293b;
            padding: 12px 24px;
            border-radius: 35px;
            font-size: 1.05rem;
            transition: var(--transition);
            color: #cbd5e0;
            text-decoration: none;
        }
        .tag:hover {
            background-color: var(--primary);
            color: white;
            padding-left: 24px;
            transform: translateY(-3px);
        }
        .recommendation {
            background-color: rgba(255,87,34,0.12);
            padding: 35px;
            border-radius: var(--border-radius);
            margin-top: 35px;
            border-left: 6px solid var(--secondary);
        }
        .recommendation h4 {
            color: var(--accent);
            margin-bottom: 25px;
            font-size: 1.6rem;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        .recommendation h4::before {
            content: none;
        }
        .recommendation p {
            color: #e2e8f0;
            margin-bottom: 25px;
            font-size: 1.15rem;
            text-align: left;
        }
        .recommendation p:last-child {
            margin-bottom: 0;
            font-weight: 500;
        }
        .copyright {
            text-align: center;
            padding-top: 60px;
            border-top: 1px solid #2d3748;
            font-size: 1.1rem;
            color: #a0aec0;
            line-height: 2.2;
        }
        .copyright-links {
            margin: 25px 0;
        }
        .copyright-links a {
            color: #a0aec0;
            text-decoration: none;
            margin: 0 20px;
            transition: var(--transition);
        }
        .copyright-links a:hover {
            color: var(--accent);
            text-decoration: underline;
        }
        @media (max-width: 1200px) {
            .hero h1 {
                font-size: 3.7rem;
            }
            .section-title {
                font-size: 2.5rem;
            }
            .content-card {
                padding: 45px;
            }
        }
        @media (max-width: 992px) {
            nav ul {
                gap: 30px;
            }
            .btn {
                padding: 11px 22px;
                font-size: 1rem;
            }
            .hero {
                padding: 120px 0;
            }
            .hero h1 {
                font-size: 3.2rem;
            }
            .hero p {
                font-size: 1.35rem;
            }
            main {
                padding: 80px 0;
            }
            .section {
                margin-bottom: 100px;
            }
            .features-grid {
                gap: 35px;
            }
        }
        @media (max-width: 768px) {
            .header-content {
                justify-content: space-between;
            }
            nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: var(--primary);
                padding: 35px;
                box-shadow: 0 15px 25px rgba(0,0,0,0.2);
                z-index: 999;
                flex-direction: column;
            }
            nav.active {
                display: flex;
            }
            nav ul {
                flex-direction: column;
                gap: 30px;
                margin-right: 0;
                margin-bottom: 30px;
                width: 100%;
            }
            nav ul li {
                width: 100%;
            }
            nav a {
                display: block;
                width: 100%;
                padding: 15px 0;
                font-size: 1.15rem;
            }
            .btn-group {
                display: flex;
                width: 100%;
                gap: 20px;
            }
            .btn {
                width: 50%;
                margin-right: 0;
            }
            .hamburger {
                display: block;
            }
            .hero {
                padding: 100px 0;
            }
            .hero h1 {
                font-size: 2.8rem;
            }
            .hero p {
                font-size: 1.25rem;
            }
            .section-title {
                font-size: 2.2rem;
            }
            .content-card {
                padding: 40px 30px;
            }
            .content-card h3 {
                font-size: 1.9rem;
            }
            .download-container {
                padding: 60px 35px;
            }
            .download-container h3 {
                font-size: 2.3rem;
            }
        }
        @media (max-width: 576px) {
            .logo {
                font-size: 1.7rem;
            }
            .logo .edition {
                font-size: 1rem;
                padding: 4px 12px;
            }
            .hero {
                padding: 80px 0;
            }
            .hero h1 {
                font-size: 2.4rem;
                line-height: 1.35;
            }
            .hero .btn-group {
                flex-direction: column;
                gap: 20px;
            }
            .hero .btn {
                width: 100%;
            }
            .section-title {
                font-size: 2rem;
            }
            .content-card h3 {
                font-size: 1.7rem;
            }
            .content-card h4 {
                font-size: 1.45rem;
            }
            .tabs {
                flex-direction: column;
                border-bottom: none;
            }
            .tab {
                border-bottom: 1px solid #dee2e6;
                border-radius: 0;
                text-align: left;
                padding: 15px 20px;
            }
            .tab.active {
                border-radius: 0;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .download-buttons {
                flex-direction: column;
                gap: 20px;
            }
            .download-btn {
                width: 100%;
                justify-content: center;
                padding: 20px 30px;
            }
            .footer-content {
                gap: 50px;
            }
            .copyright-links a {
                display: block;
                margin: 15px 0;
            }
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                transition: none !important;
                animation: none !important;
            }
        }
        .loader {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: white;
            z-index: 99999;
            align-items: center;
            justify-content: center;
        }
        .loader.active {
            display: flex;
        }
        .spinner {
            width: 70px;
            height: 70px;
            border: 8px solid rgba(15,76,129,0.15);
            border-top-color: var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }