/* === BASE STYLES === */:root {
            --primary: #FF3366;
            --primary-dark: #CC0033;
            --secondary: #00E5FF;
            --accent: #FFD700;
            --dark: #0A0E1A;
            --dark-light: #151B2D;
            --text: #E8E8F0;
            --text-muted: #9BA3B8;
            --gradient-main: linear-gradient(135deg, #FF3366 0%, #CC0033 100%);
            --gradient-secondary: linear-gradient(135deg, #00E5FF 0%, #0099CC 100%);
            --gradient-hero: linear-gradient(135deg, rgba(255,51,102,0.15) 0%, rgba(0,229,255,0.15) 100%);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html, body {
            overflow-x: hidden;
            max-width: 100vw;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: var(--dark);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
            color: #fff;
        }

        h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        h2 {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            margin-bottom: 2rem;
            position: relative;
            padding-bottom: 1rem;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--gradient-main);
            border-radius: 2px;
        }

        h3 {
            font-size: clamp(1.25rem, 3vw, 1.75rem);
            color: var(--secondary);
        }

        p {
            margin-bottom: 1rem;
            color: var(--text);
        }

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: var(--accent);
        }

        .btn {
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s ease;
            z-index: -1;
        }

        .btn:hover::before {
            left: 100%;
        }

        .btn-primary {
            background: var(--gradient-main);
            color: #fff;
            box-shadow: 0 10px 30px rgba(255, 51, 102, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 15px 40px rgba(255, 51, 102, 0.6);
        }

        .cta-button {
            display: inline-block;
            padding: 1rem 2.5rem;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: 0 10px 30px rgba(255, 51, 102, 0.4);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            overflow: hidden;
        }

        .cta-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s ease;
        }

        .cta-button:hover {
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 15px 40px rgba(255, 51, 102, 0.6);
            color: #fff;
        }

        .cta-button:hover::before {
            left: 100%;
        }

        .card {
            background: var(--dark-light);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2rem;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .card::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: var(--gradient-main);
            border-radius: 20px;
            opacity: 0;
            transition: opacity 0.4s ease;
            z-index: -1;
        }

        .card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 60px rgba(255, 51, 102, 0.3);
        }

        .card:hover::before {
            opacity: 1;
        }

        .feature-card {
            background: var(--dark-light);
            border: 1px solid rgba(0, 229, 255, 0.2);
            border-radius: 20px;
            padding: 2rem;
            transition: all 0.4s ease;
            position: relative;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            border-color: var(--secondary);
            box-shadow: 0 15px 40px rgba(0, 229, 255, 0.3);
        }

        .info-card {
            background: linear-gradient(135deg, rgba(255, 51, 102, 0.1) 0%, rgba(0, 229, 255, 0.1) 100%);
            border-left: 4px solid var(--primary);
            border-radius: 15px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }

        .highlight-box {
            background: linear-gradient(135deg, rgba(0, 229, 255, 0.15) 0%, rgba(255, 51, 102, 0.15) 100%);
            border: 2px solid var(--secondary);
            border-radius: 15px;
            padding: 1.5rem;
            margin: 1.5rem 0;
        }

        .checklist {
            list-style: none;
            padding: 0;
        }

        .checklist li {
            padding: 0.75rem 0 0.75rem 2.5rem;
            position: relative;
            color: var(--text);
        }

        .checklist li::before {
            content: '✓';
            position: absolute;
            left: 0;
            top: 0.75rem;
            width: 1.8rem;
            height: 1.8rem;
            background: var(--gradient-main);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .feature-list {
            list-style: none;
            padding: 0;
        }

        .feature-list li {
            padding: 1rem 0 1rem 3rem;
            position: relative;
            color: var(--text);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list li::before {
            content: '⚡';
            position: absolute;
            left: 0;
            top: 1rem;
            font-size: 1.5rem;
        }

        .content-image {
            max-width: 100%;
            margin: 2rem auto;
            text-align: center;
        }

        .content-image img {
            max-width: 100%;
            height: auto;
            max-height: 450px;
            object-fit: contain;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .content-image.portrait img {
            max-height: 400px;
            max-width: 350px;
        }

        .content-image.wide img {
            max-height: 350px;
            max-width: 100%;
        }

        .content-image figcaption {
            margin-top: 1rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            font-style: italic;
        }

        .table-responsive {
            overflow-x: auto;
            margin: 1.5rem 0;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            background: var(--dark-light);
        }

        th, td {
            padding: 1rem;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text);
        }

        th {
            background: linear-gradient(135deg, rgba(255, 51, 102, 0.2) 0%, rgba(0, 229, 255, 0.2) 100%);
            color: #fff;
            font-weight: 700;
        }

        /* === LAYOUT STYLES === */
        header {
            background: rgba(10, 14, 26, 0.95);
            backdrop-filter: blur(10px);
            padding: 1.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
        }

        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.1rem;
        }

        .logo img {
            max-height: 25px;
            width: auto;
            filter: drop-shadow(0 4px 10px rgba(255, 51, 102, 0.3));
        }
        
        .logo a {
            display: inline-block;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
        }

        .hamburger span {
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(8px, 8px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(8px, -8px);
        }

        header nav {
            display: flex;
            align-items: center;
        }

        header .nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
            margin: 0;
            padding: 0;
            padding-left: 0;
            margin-bottom: 0;
        }
        
        @media (min-width: 992px) {
            header .nav-menu {
                padding-left: 0;
                margin-bottom: 0;
            }
        }

        header .nav-menu a {
            color: var(--text);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            position: relative;
        }

        header .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-main);
            transition: width 0.3s ease;
        }

        header .nav-menu a:hover {
            color: var(--primary);
        }

        header .nav-menu a:hover::after {
            width: 100%;
        }

        header .cta-button {
            padding: 0.75rem 1.75rem;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        footer {
            background: var(--dark-light);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 4rem 0 2rem;
            margin-top: 6rem;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-section h3, .footer-section h4 {
            color: var(--secondary);
            margin-bottom: 1.5rem;
        }

        .footer-section ul {
            list-style: none;
            padding: 0;
        }

        .footer-section ul li {
            margin-bottom: 0.75rem;
        }

        .footer-section a {
            color: var(--text-muted);
            transition: all 0.3s ease;
        }

        .footer-section a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-muted);
        }

        @media (max-width: 991px) {
            header .nav-menu {
                gap: 1.5rem;
            }

            header .nav-menu a {
                font-size: 0.9rem;
            }
        }

        @media (max-width: 767px) {
            header .container {
                flex-wrap: wrap;
            }

            .hamburger {
                display: flex;
                order: 3;
            }

            header nav {
                order: 4;
                width: 100%;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }

            header nav.active {
                max-height: 500px;
            }

            header .nav-menu {
                flex-direction: column;
                width: 100%;
                gap: 0;
                padding: 1rem 0;
            }

            header .nav-menu li {
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            header .nav-menu a {
                display: block;
                padding: 1rem;
            }

            header .cta-button {
                order: 4;
                width: 100%;
                text-align: center;
                margin-top: 1rem;
                max-width: 100%;
            }

            .logo {
                order: 1;
            }
        }

@media (max-width: 767px) {
            section {
                padding: 3rem 0;
            }

            .hero-section {
                min-height: 70vh;
                padding: 3rem 0;
            }

            .intro-text {
                font-size: 1rem;
            }

            .hero-section .cta-button {
                font-size: 1rem;
                padding: 1rem 2rem;
            }

            .toc-list {
                grid-template-columns: 1fr;
            }

            .cards-grid-2 {
                grid-template-columns: 1fr;
            }

            .timeline-item {
                gap: 1rem;
            }

            .timeline-marker {
                width: 2.5rem;
                height: 2.5rem;
                font-size: 1rem;
            }

            .timeline-item::before {
                left: 1.25rem;
            }

            .cta-section {
                margin: 2rem 1rem;
            }

            .cta-section p {
                font-size: 1rem;
            }
        }