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

        body {
            font-family: 'Vazirmatn', sans-serif;
            direction: rtl;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #333;
            line-height: 1.6;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* Header Styles */
        header {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            font-size: 28px;
            font-weight: 700;
            color: #667eea;
            text-decoration: none;
        }

        .logo span {
            color: #764ba2;
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .nav-links a:hover {
            color: #667eea;
        }

        .cta-button {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 12px 25px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 500;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
        }

        /* Slider Styles */
       slider {
    position: relative;
    height: 500px; /* می‌توانید ارتفاع را به دلخواه تغییر دهید */
    overflow: hidden;
    margin: 100px 0 0; /* فقط مارجین از بالا، بدون گردی گوشه یا سایه */
    width: 100%; /* عرض کامل */
    background: #f4f7fc; /* پس‌زمینه به کل اسلایدر منتقل شد */
}

.slide {
    width: 33.33%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0; /* پدینگ افقی حذف شد چون container آن را مدیریت می‌کند */
}

/* این کلاس جدید، چیدمان محتوای داخل container را مدیریت می‌کند */
.slide-content-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    width: 100%;
}

.slide-text {
    flex: 1;
    max-width: 50%;
    text-align: right;
    color: #333;
}

.slide-text h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #444;
}

.slide-text p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
}

.slide-image {
    flex: 1;
    max-width: 45%;
}

.slide-image img {
    max-width: 100%;
    height: auto;
}

/* دکمه‌های چپ و راست نیاز به کمی فاصله بیشتر از لبه‌ها دارند */
.prev-btn {
    right: 40px;
}

.next-btn {
    left: 40px;
}

/* === Responsive adjustments for the full-width slider === */
@media (max-width: 768px) {
    .slider {
        height: auto; /* ارتفاع در موبایل خودکار تنظیم شود */
        padding: 40px 0;
    }
    .slide-content-wrapper {
        flex-direction: column-reverse;
        text-align: center;
        gap: 30px;
    }
    .slide-text, .slide-image {
        max-width: 80%;
        text-align: center;
    }
    .slide-text h2 {
        font-size: 1.8rem;
    }
    .prev-btn {
        right: 15px;
    }
    .next-btn {
        left: 15px;
    }
}

        /* Tabs Styles */
        .tabs-section {
            padding: 80px 0;
            background: white;
        }

        .tabs-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
            border-bottom: 2px solid #eee;
        }

        .tab {
            padding: 15px 30px;
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s ease;
            border-bottom: 3px solid transparent;
        }

        .tab.active {
            color: #667eea;
            border-bottom: 3px solid #667eea;
        }

        .tab-content {
            display: none;
            padding: 30px;
            background: #f8f9fa;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .tab-content.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* Features Section */
        .features {
            padding: 80px 0;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 60px;
            color: #333;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
        }

        .feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 15px;
            text-align: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: #333;
        }

        .feature-card p {
            color: #666;
            line-height: 1.7;
        }

        /* How It Works */
        .how-it-works {
            padding: 80px 0;
            background: white;
        }

        .steps {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            margin-top: 50px;
        }

        .step {
            flex: 1;
            min-width: 250px;
            text-align: center;
            padding: 30px;
            position: relative;
        }

        .step-number {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 auto 20px;
        }

        .step h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: #333;
        }

        .step p {
            color: #666;
        }

        /* Testimonials */
        .testimonials {
            padding: 80px 0;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .testimonial-card {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 20px;
            color: #555;
            line-height: 1.7;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            margin-left: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
        }

        .author-info h4 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }

        .author-info p {
            color: #666;
            font-size: 0.9rem;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .cta-button {
            background: white;
            color: #667eea;
            font-weight: 600;
            padding: 15px 40px;
            font-size: 1.1rem;
        }

        .cta-section .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }

        /* Footer */
        footer {
            background: #333;
            color: white;
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            color: #fff;
        }

        .footer-column ul {
            list-style: none;
        }

        .footer-column ul li {
            margin-bottom: 10px;
        }

        .footer-column ul li a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-column ul li a:hover {
            color: white;
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #555;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.3s ease;
        }

        .social-icon:hover {
            background: #667eea;
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #555;
            color: #ccc;
            font-size: 0.9rem;
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                padding: 15px 0;
            }

            .nav-links {
                margin: 20px 0;
                flex-wrap: wrap;
                justify-content: center;
            }

            .nav-links li {
                margin: 5px 15px;
            }

            .slider {
                height: 400px;
                margin-top: 80px;
            }

            .slide-content h2 {
                font-size: 1.8rem;
            }

            .slide-content p {
                font-size: 1rem;
            }

            .tabs {
                flex-wrap: wrap;
            }

            .tab {
                padding: 10px 15px;
                font-size: 0.9rem;
            }

            .steps {
                flex-direction: column;
            }

            .step {
                margin-bottom: 40px;
            }
        }