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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            color: #333;
        }

        /* Header */
        .header {
            padding: 1.5rem 3rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .logo img {
            height: 45px;
        }

        .logo-text {
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            letter-spacing: -0.5px;
        }

        .tutor-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 0.6rem 1.5rem;
            border: 2px solid rgba(255,255,255,0.3);
            border-radius: 25px;
            transition: all 0.3s;
        }

        .tutor-link:hover {
            background: white;
            color: #667eea;
            border-color: white;
        }

        /* Main Container */
        .main-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem 3rem 4rem;
            display: grid;
            grid-template-columns: 1fr 420px;
            gap: 4rem;
            align-items: start;
        }

        /* Left Content */
        .content-section {
            color: white;
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            letter-spacing: -1px;
        }

        .hero-subtitle {
            font-size: 1.3rem;
            opacity: 0.95;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .free-badge {
            display: inline-block;
            background: #10b981;
            color: white;
            padding: 0.5rem 1.2rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 2.5rem;
        }

        /* Features Grid */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            margin-top: 3rem;
        }

        .feature-item {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            padding: 1.25rem;
            border-radius: 15px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all 0.3s;
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .feature-item:hover {
            background: rgba(255, 255, 255, 0.15);
            transform: translateY(-5px);
        }

        .feature-icon {
            font-size: 2rem;
            flex-shrink: 0;
            margin-top: 0.2rem;
        }

        .feature-content {
            flex: 1;
        }

        .feature-item h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
            font-weight: 600;
        }

        .feature-item p {
            font-size: 0.9rem;
            opacity: 0.9;
            line-height: 1.5;
            margin: 0;
        }

        /* Stats */
        .stats {
            display: flex;
            gap: 3rem;
            margin-top: 3rem;
            padding-top: 3rem;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }

        .stat-item {
            text-align: center;
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            display: block;
            margin-bottom: 0.3rem;
        }

        .stat-label {
            font-size: 0.95rem;
            opacity: 0.9;
        }

        /* Tutor Section */
        .tutor-section {
            margin-top: 3rem;
            padding-top: 4rem;
            border-top: 2px solid rgba(255, 255, 255, 0.3);
        }

        .tutor-badge {
            display: inline-block;
            background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
            color: white;
            padding: 0.5rem 1.2rem;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }

        .tutor-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            letter-spacing: -1px;
        }

        .tutor-subtitle {
            font-size: 1.2rem;
            opacity: 0.95;
            margin-bottom: 2.5rem;
            line-height: 1.6;
        }

        .tutor-features-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .tutor-feature-item {
            background: linear-gradient(135deg, rgba(161, 140, 209, 0.15) 0%, rgba(251, 194, 235, 0.15) 100%);
            backdrop-filter: blur(10px);
            padding: 1.25rem;
            border-radius: 15px;
            border: 1px solid rgba(251, 194, 235, 0.3);
            transition: all 0.3s;
            display: flex;
            gap: 1rem;
            align-items: flex-start;
        }

        .tutor-feature-item:hover {
            background: linear-gradient(135deg, rgba(161, 140, 209, 0.25) 0%, rgba(251, 194, 235, 0.25) 100%);
            transform: translateY(-5px);
            border-color: rgba(251, 194, 235, 0.5);
        }

        .tutor-feature-item .feature-icon {
            font-size: 2rem;
            flex-shrink: 0;
            margin-top: 0.2rem;
        }

        .tutor-feature-content {
            flex: 1;
        }

        .tutor-feature-item h3 {
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
            font-weight: 600;
        }

        .tutor-feature-item p {
            font-size: 0.9rem;
            opacity: 0.9;
            line-height: 1.5;
            margin: 0;
        }

        /* Tutor CTA */
        .tutor-cta {
            margin-top: 3rem;
            text-align: center;
            padding: 2.5rem;
            background: linear-gradient(135deg, rgba(161, 140, 209, 0.2) 0%, rgba(251, 194, 235, 0.2) 100%);
            border-radius: 20px;
            border: 2px solid rgba(251, 194, 235, 0.4);
        }

        .tutor-cta h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }

        .tutor-cta p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 1.5rem;
        }

        .tutor-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            background: white;
            color: #a18cd1;
            padding: 1rem 2.5rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1.1rem;
            text-decoration: none;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .tutor-cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
            background: #f8f9fa;
        }

        /* Login Box */
        .login-box {
            background: white;
            border-radius: 20px;
            padding: 2.5rem;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            position: sticky;
            top: 2rem;
        }

        .login-header {
            text-align: center;
            margin-bottom: 2rem;
        }

        .login-logo {
            width: 120px;
            margin-bottom: 1rem;
        }

        .login-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1f2937;
            margin-bottom: 0.5rem;
        }

        .login-subtitle {
            color: #6b7280;
            font-size: 0.95rem;
        }

        .google-btn {
            width: 100%;
            background: white;
            border: 2px solid #e5e7eb;
            color: #374151;
            padding: 1rem;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.8rem;
        }

        .google-btn:hover {
            border-color: #667eea;
            background: #f9fafb;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .google-btn i {
            font-size: 1.2rem;
        }

        .divider {
            text-align: center;
            margin: 2rem 0;
            position: relative;
            color: #9ca3af;
            font-size: 0.85rem;
        }

        .divider::before,
        .divider::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 40%;
            height: 1px;
            background: #e5e7eb;
        }

        .divider::before {
            left: 0;
        }

        .divider::after {
            right: 0;
        }

        .benefits-list {
            list-style: none;
            margin-top: 1.5rem;
        }

        .benefits-list li {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 0.8rem 0;
            color: #4b5563;
            font-size: 0.95rem;
        }

        .benefits-list i {
            color: #10b981;
            font-size: 1.1rem;
        }

        .login-footer {
            text-align: center;
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid #e5e7eb;
            color: #6b7280;
            font-size: 0.85rem;
        }

        /* Footer */
        .page-footer {
            max-width: 1400px;
            margin: 0 auto;
            padding: 2rem 3rem;
            text-align: center;
            color: white;
            opacity: 0.8;
            font-size: 0.9rem;
        }

        .page-footer a {
            color: white;
            text-decoration: none;
            margin: 0 1rem;
            transition: opacity 0.3s;
        }

        .page-footer a:hover {
            opacity: 0.7;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-container {
                grid-template-columns: 1fr;
                gap: 3rem;
            }

            .login-box {
                position: relative;
                top: 0;
                max-width: 500px;
                margin: 0 auto;
            }

            .features-grid,
            .tutor-features-grid {
                grid-template-columns: 1fr;
            }

            .hero-title,
            .tutor-title {
                font-size: 2.0rem;
            }
        }

        @media (max-width: 768px) {
            .header {
                padding: 1.5rem 1.5rem;
            }

            .main-container {
                padding: 2rem 1.5rem;
            }

            .hero-title,
            .tutor-title {
                font-size: 2.2rem;
            }

            .hero-subtitle,
            .tutor-subtitle {
                font-size: 1.1rem;
            }

            .stats {
                flex-direction: column;
                gap: 1.5rem;
            }

            .login-box {
                padding: 2rem 1.5rem;
            }

            .tutor-cta {
                padding: 2rem 1.5rem;
            }

            .tutor-cta h3 {
                font-size: 1.5rem;
            }
        }

        /* Loading Animation */
        .btn-loading {
            opacity: 0.7;
            pointer-events: none;
        }

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

        .fa-spin {
            animation: spin 1s linear infinite;
        }