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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: 'Poppins', system-ui, sans-serif;
            background: #ffffff;
            color: #0f172a;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            line-height: 1.6;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
        }

        .font-sans {
            font-family: 'Poppins', system-ui, sans-serif;
        }

        .font-display {
            font-family: 'Montserrat', 'Poppins', sans-serif;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: 'Montserrat', 'Poppins', sans-serif;
            letter-spacing: -0.02em;
        }

        ::-webkit-scrollbar {
            width: 6px;
        }

        ::-webkit-scrollbar-track {
            background: #f8fafc;
        }

        ::-webkit-scrollbar-thumb {
            background: #3B4293;
            border-radius: 4px;
        }

        /* Backgrounds */
        .bg-technical-grid {
            background-image:
                linear-gradient(rgba(59, 66, 147, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(59, 66, 147, 0.05) 1px, transparent 1px);
            background-size: 60px 60px;
        }

        .bg-diagonal-lines {
            background-image: repeating-linear-gradient(45deg, transparent, transparent 12px, rgba(59, 66, 147, 0.03) 12px, rgba(59, 66, 147, 0.03) 13px);
        }

        .bg-crosshatch {
            background-image:
                repeating-linear-gradient(0deg, transparent, transparent 19px, rgba(59, 66, 147, 0.04) 19px, rgba(59, 66, 147, 0.04) 20px),
                repeating-linear-gradient(90deg, transparent, transparent 19px, rgba(59, 66, 147, 0.04) 19px, rgba(59, 66, 147, 0.04) 20px);
        }

        /* Animations */
        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        @keyframes bookPageFlip {
            from {
                opacity: 0;
                transform: translateX(15px);
            }

            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        /* Scroll Reveal */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }

        .reveal-left {
            opacity: 0;
            transform: translateX(-20px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal-left.active {
            opacity: 1;
            transform: translateX(0);
        }

        .reveal-right {
            opacity: 0;
            transform: translateX(20px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal-right.active {
            opacity: 1;
            transform: translateX(0);
        }

        .stagger-children>* {
            opacity: 0;
            transform: translateY(15px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        /* Glassmorphism Capability Boxes */
        .glass-strip {
            background: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .glass-strip::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                radial-gradient(circle at 15% 20%, rgba(59, 66, 147, 0.06) 0%, transparent 40%),
                radial-gradient(circle at 85% 80%, rgba(59, 66, 147, 0.05) 0%, transparent 45%);
            pointer-events: none;
        }

        .glass-box {
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 16px;
            padding: 1.75rem 1.5rem;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
            transition: transform 0.3s ease, background 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
            min-height: 120px;
        }

        @media (max-width: 639px) {
            .glass-box {
                padding: 1.25rem 1rem;
                height: 165px;
                min-height: 165px;
            }
        }

        .glass-box:hover {
            transform: translateY(-4px);
            background: rgba(255, 255, 255, 0.16);
        }

        .glass-box-title {
            font-family: 'Montserrat', 'Poppins', sans-serif;
            font-weight: 800;
            color: #ffffff;
            font-size: 1.15rem;
            letter-spacing: -0.01em;
            margin-bottom: 0.6rem;
        }

        .glass-box-sub {
            font-family: 'Poppins', system-ui, sans-serif;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.85rem;
            line-height: 1.6;
        }

        .glass-box-sub ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .glass-box-sub li {
            position: relative;
            padding-left: 16px;
            margin-bottom: 4px;
        }

        .glass-box-sub li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.6em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.7);
        }

        .stagger-children.active>* {
            opacity: 1;
            transform: translateY(0);
            transition-delay: calc(var(--i, 0) * 0.08s);
        }

        /* Capability Marquee (continuous sliding boxes) */
        .cap-marquee-outer {
            position: relative;
        }

        .cap-marquee-wrap {
            position: relative;
            overflow-x: auto;
            overflow-y: hidden;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0.5rem 0;
            -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 30px, #000 calc(100% - 30px), transparent 100%);
            mask-image: linear-gradient(90deg, transparent 0, #000 30px, #000 calc(100% - 30px), transparent 100%);
        }

        .cap-marquee-wrap::-webkit-scrollbar {
            display: none;
        }

        @media (min-width: 640px) {
            .cap-marquee-wrap {
                -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 60px, #000 calc(100% - 60px), transparent 100%);
                mask-image: linear-gradient(90deg, transparent 0, #000 60px, #000 calc(100% - 60px), transparent 100%);
            }
        }

        .cap-track {
            display: flex;
            gap: 0.75rem;
            width: max-content;
            will-change: transform;
        }

        .cap-card {
            background: rgba(59, 66, 147, 0.08);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(59, 66, 147, 0.16);
            border-radius: 16px;
            padding: 0.9rem 0.75rem;
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
            width: 130px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            min-height: 64px;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .cap-card:hover {
            transform: translateY(-3px);
            background: rgba(59, 66, 147, 0.12);
        }

        @media (min-width: 640px) {
            .cap-card {
                width: 160px;
                padding: 1.1rem 1rem;
                min-height: 76px;
            }
        }

        .cap-card-title {
            font-family: 'Montserrat', 'Poppins', sans-serif;
            font-weight: 700;
            color: #2a3070;
            font-size: 0.85rem;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        @media (min-width: 640px) {
            .cap-card-title {
                font-size: 0.95rem;
            }
        }

        .cap-arrow-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            z-index: 3;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: rgba(59, 66, 147, 0.10);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(59, 66, 147, 0.22);
            border-radius: 50%;
            color: #3B4293;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .cap-arrow-btn.cap-prev-btn {
            left: 0.5rem;
        }

        .cap-arrow-btn.cap-next-btn {
            right: 0.5rem;
        }

        .cap-arrow-btn:hover {
            background: rgba(59, 66, 147, 0.2);
        }

        .cap-arrow-btn:active {
            transform: translateY(-50%) scale(0.92);
        }

        .cap-arrow-btn svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
            fill: none;
            stroke-width: 2.5;
        }

        .cap-marquee-status {
            text-align: center;
            margin-top: 1rem;
            font-family: 'Poppins', sans-serif;
            font-size: 0.75rem;
            font-weight: 500;
            color: #94a3b8;
        }

        /* Navigation */
        .nav-container {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: all 0.3s ease;
            padding: 0.875rem 1rem;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        @media (max-width: 767px) {

            .nav-container,
            .nav-container.scrolled {
                padding-left: 0.75rem;
            }

            .logo-link {
                margin-left: 0;
            }
        }

        @media (min-width: 768px) {
            .nav-container {
                padding: 1.25rem 2rem;
            }
        }

        .nav-container.scrolled {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 1px 0 rgba(59, 66, 147, 0.08);
            padding: 0.75rem 1rem;
        }

        @media (min-width: 768px) {
            .nav-container.scrolled {
                padding: 0.875rem 2rem;
            }
        }

        .nav-link {
            position: relative;
            color: #0f172a;
            text-decoration: none;
            font-family: 'Poppins', sans-serif;
            font-weight: 500;
            font-size: 0.875rem;
            transition: color 0.2s ease;
            padding: 0.5rem 0;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: #3B4293;
            transition: width 0.25s ease;
        }

        .nav-link:hover {
            color: #3B4293;
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: #3B4293;
        }

        .nav-link.active::after {
            width: 100%;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            padding: 0.875rem 1.5rem;
            background: #3B4293;
            color: white;
            border-radius: 10px;
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: background 0.2s ease, transform 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 48px;
        }

        .btn-primary:hover {
            background: #2a3070;
            transform: translateY(-1px);
        }

        @media (min-width: 640px) {
            .btn-primary {
                padding: 0.875rem 1.75rem;
            }
        }

        .btn-whatsapp {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            padding: 0.875rem 1.5rem;
            background: #25D366;
            color: white;
            border-radius: 10px;
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: background 0.2s ease, transform 0.2s ease;
            border: none;
            cursor: pointer;
            min-height: 48px;
        }

        .btn-whatsapp:hover {
            background: #1da851;
            transform: translateY(-1px);
        }

        @media (min-width: 640px) {
            .btn-whatsapp {
                padding: 0.875rem 1.75rem;
            }
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            padding: 0.875rem 1.5rem;
            background: transparent;
            color: #0f172a;
            border: 1.5px solid #e2e8f0;
            border-radius: 10px;
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            font-size: 0.875rem;
            text-decoration: none;
            transition: all 0.2s ease;
            cursor: pointer;
            min-height: 48px;
        }

        .btn-outline:hover {
            border-color: #3B4293;
            color: #3B4293;
        }

        /* Hero */
        .hero-section {
            display: flex;
            align-items: center;
            position: relative;
            overflow: hidden;
            padding: 6rem 1rem 2rem;
            background: #ffffff;
        }

        @media (min-width: 640px) {
            .hero-section {
                min-height: 100vh;
                min-height: 100svh;
                padding: 7rem 1.5rem 4rem;
            }
        }

        @media (min-width: 1024px) {
            .hero-section {
                padding: 6rem 2rem 4rem;
            }
        }

        .hero-image-container {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.15);
            transition: transform 0.4s ease;
        }

        .hero-image-container:hover {
            transform: translateY(-4px);
        }

        @media (max-width: 639px) {
            .hero-image-container {
                max-height: 220px;
            }

            .hero-image-container img {
                width: 100%;
                height: 220px;
                object-fit: cover;
                display: block;
            }

            #about .reveal-left img {
                max-height: 220px;
                width: 100%;
                object-fit: cover;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 0.875rem;
            background: rgba(59, 66, 147, 0.08);
            border-radius: 4px;
            font-family: 'Poppins', sans-serif;
            font-size: 0.7rem;
            font-weight: 600;
            color: #3B4293;
            margin-bottom: 1.25rem;
            text-transform: uppercase;
            letter-spacing: 0.15em;
        }

        .hero-title {
            font-family: 'Montserrat', sans-serif;
            font-size: clamp(2.25rem, 8vw, 5rem);
            font-weight: 900;
            line-height: 0.95;
            color: #0f172a;
            margin-bottom: 1.25rem;
            letter-spacing: -0.04em;
        }

        @media (min-width: 640px) {
            .hero-title {
                font-size: clamp(2.75rem, 6vw, 5rem);
                margin-bottom: 1.5rem;
            }
        }

        .hero-title .highlight {
            color: #3B4293;
            display: inline-block;
        }

        .hero-subtitle {
            font-family: 'Poppins', sans-serif;
            font-size: 0.95rem;
            line-height: 1.7;
            color: #475569;
            margin-bottom: 1.75rem;
            max-width: 520px;
        }

        @media (min-width: 640px) {
            .hero-subtitle {
                font-size: 1.05rem;
                margin-bottom: 2rem;
            }
        }

        /* Graphical Accents */
        .corner-bracket {
            position: absolute;
            width: 20px;
            height: 20px;
            pointer-events: none;
        }

        @media (min-width: 768px) {
            .corner-bracket {
                width: 24px;
                height: 24px;
            }
        }

        .corner-bracket-tl {
            top: -6px;
            left: -6px;
            border-top: 2px solid #3B4293;
            border-left: 2px solid #3B4293;
        }

        .corner-bracket-tr {
            top: -6px;
            right: -6px;
            border-top: 2px solid #3B4293;
            border-right: 2px solid #3B4293;
        }

        .corner-bracket-bl {
            bottom: -6px;
            left: -6px;
            border-bottom: 2px solid #3B4293;
            border-left: 2px solid #3B4293;
        }

        .corner-bracket-br {
            bottom: -6px;
            right: -6px;
            border-bottom: 2px solid #3B4293;
            border-right: 2px solid #3B4293;
        }

        .crosshair {
            position: absolute;
            width: 14px;
            height: 14px;
            pointer-events: none;
        }

        .crosshair::before,
        .crosshair::after {
            content: '';
            position: absolute;
            background: #3B4293;
            opacity: 0.4;
        }

        .crosshair::before {
            width: 100%;
            height: 1px;
            top: 50%;
            transform: translateY(-50%);
        }

        .crosshair::after {
            width: 1px;
            height: 100%;
            left: 50%;
            transform: translateX(-50%);
        }

        /* Trust Bar */
        .trust-bar {
            background: #0f172a;
            padding: 1rem 0;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: white;
        }

        .trust-line {
            width: 16px;
            height: 2px;
            background: #3B4293;
            flex-shrink: 0;
        }

        /* Section Headers */
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        @media (min-width: 768px) {
            .section-header {
                margin-bottom: 3.5rem;
            }
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.4rem 0.875rem;
            background: rgba(59, 66, 147, 0.08);
            border-radius: 4px;
            font-family: 'Poppins', sans-serif;
            font-size: 0.65rem;
            font-weight: 600;
            color: #3B4293;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.15em;
        }

        @media (min-width: 640px) {
            .section-tag {
                font-size: 0.7rem;
            }
        }

        .section-title {
            font-family: 'Montserrat', sans-serif;
            font-size: clamp(1.625rem, 5vw, 2.75rem);
            font-weight: 800;
            color: #0f172a;
            line-height: 1.15;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-family: 'Poppins', sans-serif;
            font-size: 0.9rem;
            color: #64748b;
            max-width: 580px;
            margin: 0 auto;
            line-height: 1.6;
        }

        @media (min-width: 640px) {
            .section-subtitle {
                font-size: 1rem;
            }
        }

        .section-divider {
            width: 40px;
            height: 3px;
            background: #3B4293;
            border-radius: 2px;
            margin: 1rem auto;
        }

        /* Feature Icon */
        .feature-icon {
            width: 48px;
            height: 48px;
            background: rgba(59, 66, 147, 0.08);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.25rem;
            transition: background 0.2s ease;
        }

        .feature-icon svg {
            width: 24px;
            height: 24px;
            stroke: #3B4293;
        }

        /* Service Card */
        .service-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
            border: 1px solid rgba(15, 23, 42, 0.06);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 50px rgba(59, 66, 147, 0.12);
        }

        .service-card-image {
            height: 220px;
            overflow: hidden;
            position: relative;
        }

        @media (max-width: 639px) {
            .service-card-image {
                height: 150px;
            }
        }

        @media (min-width: 768px) {
            .service-card-image {
                height: 260px;
            }
        }

        .service-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .service-card:hover .service-card-image img {
            transform: scale(1.05);
        }

        .service-card-content {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        @media (min-width: 640px) {
            .service-card-content {
                padding: 1.75rem;
            }
        }

        /* Stat Card */
        .stat-card {
            text-align: center;
            padding: 1.5rem 1rem;
            border-radius: 14px;
            background: white;
            box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
            border: 1px solid rgba(15, 23, 42, 0.06);
            transition: transform 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-3px);
        }

        .stat-number {
            font-family: 'Montserrat', sans-serif;
            font-size: clamp(1.875rem, 4vw, 2.5rem);
            font-weight: 800;
            color: #3B4293;
            line-height: 1;
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }

        .stat-label {
            font-family: 'Poppins', sans-serif;
            font-size: 0.65rem;
            color: #64748b;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.08em;
        }

        @media (min-width: 640px) {
            .stat-label {
                font-size: 0.75rem;
            }
        }

        /* Process Step */
        .process-step {
            position: relative;
            padding: 1.75rem 1.5rem;
            background: white;
            border-radius: 16px;
            box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
            border: 1px solid rgba(15, 23, 42, 0.06);
            transition: transform 0.3s ease;
            height: 100%;
        }

        @media (min-width: 640px) {
            .process-step {
                padding: 2rem 1.75rem;
            }
        }

        .process-step:hover {
            transform: translateY(-3px);
        }

        .process-number {
            position: absolute;
            top: -16px;
            left: 1.5rem;
            width: 32px;
            height: 32px;
            background: #3B4293;
            color: white;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: 'Montserrat', sans-serif;
            font-weight: 700;
            font-size: 0.85rem;
        }

        /* Book Container */
        .book-container {
            position: relative;
            background: white;
            border-radius: 16px;
            box-shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
            border: 1px solid rgba(15, 23, 42, 0.06);
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .book-container {
                border-radius: 20px;
            }
        }

        .book-page {
            display: none;
            animation: bookPageFlip 0.5s ease;
        }

        .book-page.active {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
        }

        @media (min-width: 768px) {
            .book-page.active {
                grid-template-columns: 1fr 1fr;
            }
        }

        .book-page-image {
            position: relative;
            overflow: hidden;
            min-height: 160px;
            max-height: 200px;
        }

        @media (min-width: 480px) {
            .book-page-image {
                min-height: 200px;
                max-height: 260px;
            }
        }

        @media (min-width: 640px) {
            .book-page-image {
                min-height: 320px;
                max-height: none;
            }
        }

        @media (min-width: 768px) {
            .book-page-image {
                min-height: 450px;
            }
        }

        .book-page-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .book-page-content {
            padding: 1.75rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        @media (min-width: 640px) {
            .book-page-content {
                padding: 2.25rem;
            }
        }

        @media (min-width: 768px) {
            .book-page-content {
                padding: 3rem;
            }
        }

        .book-chapter-number {
            font-family: 'Montserrat', sans-serif;
            font-size: 0.65rem;
            font-weight: 700;
            color: #3B4293;
            text-transform: uppercase;
            letter-spacing: 0.2em;
            margin-bottom: 0.6rem;
        }

        @media (min-width: 640px) {
            .book-chapter-number {
                font-size: 0.7rem;
                margin-bottom: 0.75rem;
            }
        }

        .book-chapter-title {
            font-family: 'Montserrat', sans-serif;
            font-size: clamp(1.25rem, 3vw, 1.75rem);
            font-weight: 800;
            color: #0f172a;
            line-height: 1.2;
            margin-bottom: 0.875rem;
            letter-spacing: -0.02em;
        }

        .book-chapter-text {
            font-family: 'Poppins', sans-serif;
            font-size: 0.875rem;
            color: #475569;
            line-height: 1.7;
            margin-bottom: 1.25rem;
        }

        @media (min-width: 640px) {
            .book-chapter-text {
                font-size: 0.95rem;
                margin-bottom: 1.5rem;
            }
        }

        .book-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.75rem 1rem;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(15, 23, 42, 0.08);
        }

        .book-meta-item {
            font-family: 'Poppins', sans-serif;
            font-size: 0.7rem;
            color: #64748b;
            font-weight: 500;
        }

        .book-meta-item strong {
            color: #0f172a;
            font-weight: 600;
        }

        .book-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem;
            background: #f5f6fc;
            border-top: 1px solid rgba(15, 23, 42, 0.06);
            gap: 0.75rem;
        }

        @media (min-width: 640px) {
            .book-nav {
                padding: 1.25rem 1.5rem;
            }
        }

        @media (min-width: 768px) {
            .book-nav {
                padding: 1.5rem 2rem;
            }
        }

        .book-nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.625rem 1rem;
            background: white;
            border: 1.5px solid rgba(15, 23, 42, 0.1);
            border-radius: 8px;
            font-family: 'Poppins', sans-serif;
            font-weight: 600;
            font-size: 0.75rem;
            color: #0f172a;
            cursor: pointer;
            transition: all 0.2s ease;
            min-height: 44px;
        }

        @media (min-width: 640px) {
            .book-nav-btn {
                padding: 0.75rem 1.5rem;
                font-size: 0.85rem;
                gap: 0.5rem;
            }
        }

        .book-nav-btn:hover:not(:disabled) {
            background: #3B4293;
            border-color: #3B4293;
            color: white;
        }

        .book-nav-btn:disabled {
            opacity: 0.4;
            cursor: not-allowed;
        }

        .book-nav-btn svg {
            width: 14px;
            height: 14px;
            stroke: currentColor;
        }

        @media (min-width: 640px) {
            .book-nav-btn svg {
                width: 16px;
                height: 16px;
            }
        }

        .book-progress {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        @media (min-width: 640px) {
            .book-progress {
                gap: 1rem;
            }
        }

        .book-progress-bar {
            width: 80px;
            height: 3px;
            background: rgba(15, 23, 42, 0.1);
            border-radius: 2px;
            overflow: hidden;
        }

        @media (min-width: 640px) {
            .book-progress-bar {
                width: 120px;
            }
        }

        .book-progress-fill {
            height: 100%;
            background: #3B4293;
            border-radius: 2px;
            transition: width 0.4s ease;
        }

        .book-progress-text {
            font-family: 'Poppins', sans-serif;
            font-size: 0.65rem;
            font-weight: 600;
            color: #64748b;
            letter-spacing: 0.05em;
        }

        @media (min-width: 640px) {
            .book-progress-text {
                font-size: 0.75rem;
            }
        }

        .book-cover-accent {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #3B4293, #5a62b8, #3B4293);
        }

        /* Carousel */
        .carousel-container {
            position: relative;
            overflow: hidden;
            border-radius: 16px;
        }

        @media (min-width: 768px) {
            .carousel-container {
                border-radius: 20px;
            }
        }

        .carousel-track {
            display: flex;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .carousel-slide {
            min-width: 100%;
            padding: 0 0.125rem;
        }

        @media (min-width: 640px) {
            .carousel-slide {
                padding: 0 0.25rem;
            }
        }

        .carousel-slide-content {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
            display: grid;
            grid-template-columns: 1fr;
            border: 1px solid rgba(15, 23, 42, 0.06);
        }

        @media (min-width: 768px) {
            .carousel-slide-content {
                grid-template-columns: 1fr 1fr;
                border-radius: 20px;
            }
        }

        .carousel-slide-image {
            height: 240px;
            overflow: hidden;
            position: relative;
        }

        @media (max-width: 639px) {
            .carousel-slide-image {
                height: 170px;
            }
        }

        @media (min-width: 640px) {
            .carousel-slide-image {
                height: 320px;
            }
        }

        @media (min-width: 768px) {
            .carousel-slide-image {
                height: 100%;
                min-height: 420px;
            }
        }

        .carousel-slide-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .carousel-slide-info {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        @media (min-width: 640px) {
            .carousel-slide-info {
                padding: 2rem;
            }
        }

        @media (min-width: 768px) {
            .carousel-slide-info {
                padding: 2.5rem;
            }
        }

        .carousel-dots {
            display: flex;
            justify-content: center;
            gap: 0.4rem;
            margin-top: 1.5rem;
        }

        @media (min-width: 640px) {
            .carousel-dots {
                gap: 0.5rem;
                margin-top: 1.75rem;
            }
        }

        .carousel-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #e2e8f0;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            padding: 0;
            min-width: 44px;
            min-height: 44px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: transparent;
        }

        .carousel-dot::before {
            content: '';
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #e2e8f0;
            transition: all 0.25s ease;
        }

        .carousel-dot.active::before {
            background: #3B4293;
            width: 28px;
            border-radius: 5px;
        }

        .carousel-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 40px;
            height: 40px;
            background: white;
            border: 1px solid rgba(15, 23, 42, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
            z-index: 10;
            box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
            min-width: 44px;
            min-height: 44px;
        }

        @media (min-width: 640px) {
            .carousel-btn {
                width: 44px;
                height: 44px;
            }
        }

        .carousel-btn:hover {
            background: #3B4293;
            border-color: #3B4293;
        }

        .carousel-btn:hover svg {
            stroke: white;
        }

        .carousel-btn svg {
            width: 16px;
            height: 16px;
            stroke: #0f172a;
            transition: stroke 0.2s ease;
        }

        .carousel-btn-prev {
            left: 0.5rem;
        }

        .carousel-btn-next {
            right: 0.5rem;
        }

        @media (min-width: 640px) {
            .carousel-btn-prev {
                left: 1rem;
            }

            .carousel-btn-next {
                right: 1rem;
            }
        }

        /* Gallery */
        .gallery-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
        }

        @media (min-width: 640px) {
            .gallery-grid {
                gap: 1rem;
            }
        }

        @media (min-width: 768px) {
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1rem;
            }
        }

        .gallery-item {
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            cursor: pointer;
            transition: transform 0.3s ease;
            aspect-ratio: 4/3;
        }

        @media (min-width: 640px) {
            .gallery-item {
                border-radius: 14px;
            }
        }

        .gallery-item.tall {
            aspect-ratio: auto;
            grid-row: span 2;
        }

        .gallery-item:hover {
            transform: translateY(-3px);
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .gallery-item:hover img {
            transform: scale(1.05);
        }

        .gallery-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.85), transparent 60%);
            opacity: 0;
            transition: opacity 0.3s ease;
            display: flex;
            align-items: flex-end;
            padding: 1rem;
        }

        @media (min-width: 640px) {
            .gallery-overlay {
                padding: 1.25rem;
            }
        }

        .gallery-item:hover .gallery-overlay {
            opacity: 1;
        }

        /* Testimonial */
        .testimonial-card {
            background: white;
            border-radius: 16px;
            padding: 1.5rem;
            box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.04);
            border: 1px solid rgba(15, 23, 42, 0.06);
            transition: transform 0.3s ease;
            height: 100%;
        }

        @media (min-width: 640px) {
            .testimonial-card {
                padding: 1.75rem;
            }
        }

        .testimonial-card:hover {
            transform: translateY(-3px);
        }

        .testimonial-quote {
            font-family: 'Montserrat', sans-serif;
            font-size: 2rem;
            color: #3B4293;
            opacity: 0.2;
            line-height: 1;
            margin-bottom: 0.5rem;
            font-weight: 800;
        }

        /* Footer */
        .footer-section {
            background: #0f172a;
            color: white;
            padding: 3rem 1rem 1.5rem;
        }

        @media (min-width: 768px) {
            .footer-section {
                padding: 3.5rem 2rem 1.75rem;
            }
        }

        .footer-link {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color 0.2s ease;
            font-family: 'Poppins', sans-serif;
            font-size: 0.85rem;
        }

        .footer-link:hover {
            color: white;
        }

        /* Mobile Menu */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 85%;
            max-width: 360px;
            height: 100vh;
            height: 100svh;
            background: white;
            z-index: 1001;
            padding: 1.5rem;
            transition: right 0.3s ease;
            box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
            overflow-y: auto;
        }

        .mobile-menu.open {
            right: 0;
        }

        .mobile-menu-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.5);
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .mobile-menu-overlay.open {
            opacity: 1;
            visibility: visible;
        }

        /* Utility */
        .gradient-text {
            background: linear-gradient(135deg, #3B4293, #5a62b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .pill-button {
            display: inline-flex;
            align-items: center;
            padding: 0.35rem 0.8rem;
            background: rgba(59, 66, 147, 0.08);
            border-radius: 4px;
            font-family: 'Poppins', sans-serif;
            font-size: 0.7rem;
            font-weight: 500;
            color: #3B4293;
        }

        .counter {
            font-variant-numeric: tabular-nums;
        }

        /* WhatsApp Float */
        .whatsapp-float {
            position: fixed;
            bottom: 1.25rem;
            right: 1.25rem;
            width: 52px;
            height: 52px;
            background: #25D366;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
            z-index: 999;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            text-decoration: none;
        }

        @media (min-width: 640px) {
            .whatsapp-float {
                bottom: 2rem;
                right: 2rem;
                width: 56px;
                height: 56px;
            }
        }

        .whatsapp-float:hover {
            transform: scale(1.1);
            box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5);
        }

        .whatsapp-float svg {
            width: 26px;
            height: 26px;
            fill: white;
        }

        @media (min-width: 640px) {
            .whatsapp-float svg {
                width: 28px;
                height: 28px;
            }
        }

        /* Page Loader */
        .page-loader {
            position: fixed;
            inset: 0;
            background: white;
            z-index: 9999;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: opacity 0.4s ease, visibility 0.4s ease;
        }

        .page-loader.hidden {
            opacity: 0;
            visibility: hidden;
        }

        .loader-spinner {
            width: 40px;
            height: 40px;
            border: 3px solid rgba(59, 66, 147, 0.1);
            border-top-color: #3B4293;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

        /* Hide scrollbar decoration SVGs on very small screens */
        @media (max-width: 639px) {
            .hero-deco-svg {
                display: none;
            }
        }

        /* Responsive hero stats */
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            padding-top: 1.5rem;
            border-top: 1px solid #e5e7eb;
        }

        @media (max-width: 639px) {
            .hero-stats {
                gap: 0.5rem;
                text-align: center;
            }

            .hero-stats>div {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
        }

        @media (min-width: 640px) {
            .hero-stats {
                gap: 1.5rem;
                padding-top: 2rem;
            }
        }

        /* Focus states for accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid #3B4293;
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* Safe area for notched devices */
        @supports (padding: max(0px)) {
            .whatsapp-float {
                bottom: max(1.25rem, env(safe-area-inset-bottom));
                right: max(1.25rem, env(safe-area-inset-right));
            }
        }

        /* Image Lightbox */
        .img-lightbox-overlay {
            position: fixed;
            inset: 0;
            background: rgba(10, 12, 20, 0.92);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 9999;
            padding: 24px;
            cursor: zoom-out;
            opacity: 0;
            transition: opacity 0.25s ease;
        }

        .img-lightbox-overlay.active {
            display: flex;
            opacity: 1;
        }

        .img-lightbox-overlay img {
            max-width: 92vw;
            max-height: 88vh;
            width: auto;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            cursor: default;
            transform: scale(0.96);
            transition: transform 0.25s ease;
        }

        .img-lightbox-overlay.active img {
            transform: scale(1);
        }

        .img-lightbox-close {
            position: fixed;
            top: 18px;
            right: 18px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.12);
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            line-height: 1;
            cursor: pointer;
            z-index: 10000;
            transition: background 0.2s ease, transform 0.2s ease;
        }

        .img-lightbox-close:hover {
            background: rgba(255, 255, 255, 0.25);
            transform: rotate(90deg);
        }

        body.lightbox-open {
            overflow: hidden;
        }

        img:not(.img-lightbox-overlay img) {
            cursor: zoom-in;
        }