/* --- Premium Design Tokens --- */
        :root {
            /* Palette */
            --primary: #0066FF; /* Vivid Tech Blue */
            --primary-dark: #004ecc;
            --secondary: #00D26A; /* Success Green */
            --accent: #FF9F1C; /* Premium Orange */
            --danger: #FF3860;
            --dark: #0f172a; /* Slate 900 */
            --gray: #64748b; /* Slate 500 */
            --light-gray: #f8fafc; /* Slate 50 */
            --white: #ffffff;
            
            /* Shadows & Effects */
            --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.02);
            --shadow-md: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.1);
            --shadow-hover: 0 25px 50px -12px rgba(0, 102, 255, 0.25);
            
            /* Border Radius */
            --radius-sm: 6px;
            --radius-md: 16px;
            --radius-lg: 24px;
            
            /* Transitions */
            --ease-elastic: cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Hind Siliguri', 'Inter', sans-serif;
            background-color: var(--white);
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        /* --- Layout Utilities --- */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 2;
        }

        .section {
            padding: 100px 0;
            position: relative;
        }

        .bg-light { background-color: var(--light-gray); }
        
        /* Subtle Grid Background Pattern for Tech Feel */
        .bg-grid {
            background-size: 40px 40px;
            background-image: radial-gradient(circle, #e2e8f0 1px, transparent 1px);
        }

        .text-center { text-align: center; }
        
        .section-header {
            margin-bottom: 60px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.125rem;
            color: var(--gray);
            font-weight: 400;
        }

        /* --- Premium Buttons --- */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 32px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.4s var(--ease-elastic);
            border: none;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .btn::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 100%;
            background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(255,255,255,0));
            z-index: -1;
            opacity: 0;
            transition: opacity 0.4s;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: var(--white);
            box-shadow: 0 10px 20px -5px rgba(0, 102, 255, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px -5px rgba(0, 102, 255, 0.5);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid rgba(0, 102, 255, 0.1);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(0, 102, 255, 0.05);
            transform: translateY(-2px);
        }

        /* --- Header & Nav --- */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 16px 0;
            transition: all 0.3s;
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo img {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 32px;
        }

        .nav-link {
            font-weight: 500;
            color: var(--gray);
            transition: color 0.3s;
            font-size: 0.95rem;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        /* --- Hero Section --- */
        .hero {
            padding: 160px 0 120px;
            text-align: center;
            overflow: hidden;
        }

        /* Abstract decorative blob */
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 800px;
            height: 800px;
            background: radial-gradient(circle, rgba(0,102,255,0.08) 0%, rgba(255,255,255,0) 70%);
            z-index: 0;
            border-radius: 50%;
        }

        .hero h1 {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.1;
            margin-bottom: 24px;
            letter-spacing: -0.03em;
            background: -webkit-linear-gradient(45deg, var(--dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto 40px;
            line-height: 1.7;
        }

        .hero-support-line {
            display: inline-block;
            padding: 8px 24px;
            background: rgba(0, 210, 106, 0.1);
            color: var(--secondary);
            border-radius: 100px;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 40px;
            border: 1px solid rgba(0, 210, 106, 0.2);
        }

        /* --- Cards & Grids --- */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .card {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 32px;
            border: 1px solid rgba(0,0,0,0.03);
            box-shadow: var(--shadow-sm);
            transition: all 0.4s var(--ease-elastic);
            position: relative;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(0,0,0,0.06);
        }

        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

        /* --- Problem Section --- */
        .problem-icon { background: #FEF2F2; color: var(--danger); }
        .problem-card h3 { font-size: 1.25rem; margin-bottom: 8px; }
        .problem-card p { color: var(--gray); font-size: 0.95rem; }

        /* --- Solution Section --- */
        .solution-icon { background: #EFF6FF; color: var(--primary); }
        .solution-item { text-align: center; }
        .solution-item h3 { margin-bottom: 10px; font-weight: 600; }
        .solution-item p { font-size: 0.9rem; color: var(--gray); }

        .one-liner-box {
            background: var(--dark);
            color: var(--white);
            padding: 40px;
            border-radius: var(--radius-lg);
            text-align: center;
            margin-top: 60px;
            font-size: 1.5rem;
            font-weight: 600;
            position: relative;
            overflow: hidden;
        }
        
        .one-liner-box::after {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
            transform: skewX(-20deg) translateX(-150%);
            animation: shine 6s infinite;
        }

        /* --- Steps (Why 3 Models) --- */
        .steps-flex {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 40px;
        }

        .step-badge {
            background: var(--white);
            border: 1px solid rgba(0,0,0,0.08);
            padding: 16px 32px;
            border-radius: 100px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        /* --- Packages --- */
        .pkg-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .pkg-card.premium-highlight {
            border: 2px solid var(--primary);
            background: linear-gradient(to bottom, #ffffff, #f8fbff);
        }
        
        .badge-recommended {
            position: absolute;
            top: 0; right: 0;
            background: var(--primary);
            color: white;
            font-size: 0.75rem;
            padding: 6px 16px;
            border-bottom-left-radius: 16px;
            font-weight: 700;
        }

        .pkg-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; }
        .pkg-desc { color: var(--gray); margin-bottom: 24px; flex-grow: 1; }
        
        .pkg-features li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark);
            font-size: 0.95rem;
        }
        .pkg-features i { color: var(--secondary); }

        /* --- Detail Sections (Content Blocks) --- */
        .detail-block {
            background: var(--white);
            padding: 48px;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            margin-bottom: 80px;
            border: 1px solid rgba(0,0,0,0.04);
        }

        .detail-header {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid #f1f5f9;
        }

        .detail-icon {
            width: 64px;
            height: 64px;
            border-radius: 20px;
            background: var(--light-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.75rem;
            color: var(--primary);
        }

        .detail-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-top: 30px;
        }

        .detail-list li {
            margin-bottom: 14px;
            padding-left: 24px;
            position: relative;
            color: var(--gray);
        }

        .detail-list li::before {
            content: '•';
            color: var(--primary);
            font-weight: bold;
            position: absolute;
            left: 0;
            font-size: 1.2rem;
            top: -2px;
        }

        .revenue-box {
            background: #f0f9ff;
            border: 1px solid #bae6fd;
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            margin: 30px 0;
        }
        
        .revenue-text {
            color: var(--dark);
            font-size: 1.1rem;
            font-weight: 600;
        }

        /* --- Trust Rules --- */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        
        @media (max-width: 768px) { .trust-grid { grid-template-columns: 1fr 1fr; } }
        @media (max-width: 480px) { .trust-grid { grid-template-columns: 1fr; } }

        .trust-item {
            text-align: center;
            padding: 24px;
            background: var(--white);
            border-radius: 12px;
            border: 1px solid rgba(0,0,0,0.04);
        }
        .trust-icon {
            font-size: 2rem;
            margin-bottom: 16px;
            color: var(--primary);
        }

        /* --- Vision --- */
        .vision-box {
            background: linear-gradient(135deg, #0f172a, #1e293b);
            color: var(--white);
            padding: 80px 40px;
            border-radius: var(--radius-lg);
            text-align: center;
            box-shadow: var(--shadow-lg);
        }
        
        .vision-box h2 { margin-bottom: 30px; font-size: 2.2rem; }
        .vision-box p { font-size: 1.15rem; color: #cbd5e1; max-width: 800px; margin: 0 auto 20px; }
        
        /* --- FAQ --- */
        .faq-item {
            background: var(--white);
            margin-bottom: 16px;
            border-radius: 12px;
            border: 1px solid rgba(0,0,0,0.05);
            padding: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: all 0.3s;
        }
        .faq-item:hover { background: #f8fafc; }
        .faq-question { font-weight: 600; font-size: 1.05rem; flex: 1; margin-right: 20px; }
        .faq-answer { display: none; margin-top: 15px; color: var(--gray); border-top: 1px solid #eee; padding-top: 15px; }
        .faq-item.active .faq-answer { display: block; }
        .faq-icon { color: var(--primary); }

        /* --- Footer --- */
        footer {
            background: var(--dark);
            color: #94a3b8;
            padding: 80px 0 30px;
        }
        .footer-logo img { height: 40px; filter: brightness(0) invert(1); margin-bottom: 20px; }
        .footer-links { display: flex; gap: 24px; justify-content: center; margin-bottom: 40px; }
        .footer-links a { color: #cbd5e1; transition: color 0.3s; }
        .footer-links a:hover { color: var(--white); }
        .copyright { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 30px; font-size: 0.9rem; text-align: center; }

        /* --- Animations --- */
        @keyframes shine {
            100% { transform: skewX(-20deg) translateX(200%); }
        }

        .fade-in-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }
        .fade-in-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* --- Responsive --- */
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .section { padding: 60px 0; }
            .nav-menu { display: none; } /* Hide nav on mobile for simplicity */
            .detail-grid { grid-template-columns: 1fr; gap: 20px; }
            .btn { width: 100%; margin-bottom: 10px; }
            .hero-btns { display: flex; flex-direction: column; }
        }