:root {
    --primary-color: #3366FF;
    --secondary-color: #FF6633;
    --dark-color: #333333;
    --light-color: #F5F7FA;
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

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

body {
    font-family: var(--font-main);
    color: var(--dark-color);
    line-height: 1.6;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 30px 0;
    position: relative;
}

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

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.hero {
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    z-index: 2;
    position: relative;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 40px;
    color: #555;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #2952cc;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.hero-image {
    margin-top: 40px;
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.features {
    padding: 100px 0;
    background-color: var(--light-color);
    position: relative;
    margin-bottom: 0;
}

.section-heading {
    text-align: center;
    margin-bottom: 70px;
}

.section-heading h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0;
}

.section-divider-line {
    height: 2px;
    width: 60px;
    background: var(--primary-color);
    opacity: 0.5;
}

.section-divider-icon {
    margin: 0 15px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.section-heading h2:after {
    content: none;
}

.section-heading p {
    font-size: 1.2rem;
    color: #666;
    max-width: 700px;
    margin: 25px auto 0;
}

.feature-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}

.feature-item {
    flex: 1 1 300px;
    background: white;
    padding: 40px 30px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-align: center;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.feature-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-item:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    top: 0;
    left: 0;
    z-index: -1;
}

.feature-icon {
    margin-bottom: 25px;
    width: 80px;
    height: 80px;
    background: rgba(51, 102, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.feature-icon i {
    font-size: 40px;
    color: var(--primary-color);
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 15px;
}

.feature-item h3:after {
    content: '';
    position: absolute;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.feature-item p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.feature-btn {
    display: inline-block;
    padding: 8px 15px;
    background: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.feature-btn:hover {
    background: var(--primary-color);
    color: white;
}

.cta {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

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

.btn-secondary {
    background-color: white;
    color: var(--primary-color);
}

.btn-secondary:hover {
    background-color: #f8f8f8;
}

footer {
    padding: 50px 0;
    background-color: var(--dark-color);
    color: white;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-section {
    flex: 1 1 300px;
    margin-bottom: 30px;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-links {
    list-style: none;
}

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

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

.footer-links a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 40px;
    color: #aaa;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .hero {
        padding: 36px 0 28px 0;
    }
    .features {
        padding: 32px 0 24px 0;
        min-height: 420px;
    }
    .feature-grid {
        gap: 18px;
    }
    .feature-item {
        padding: 22px 10px;
        margin-bottom: 0;
    }
    .pricing {
        padding: 32px 0 36px 0;
    }
    .cta {
        padding: 32px 0 24px 0;
    }
    footer {
        padding: 16px 0 8px 0;
    }
    .container {
        padding: 0 6px;
        max-width: 100vw;
    }
    .copyright {
        padding-top: 8px;
    }
    .lang-select-box {
        top: 18px;
        right: 10px;
    }
    .lang-select-box select {
        font-size: 0.95rem;
        padding: 3px 6px;
    }
}

.pricing {
    padding: 100px 0 120px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e9ecf6 100%);
    position: relative;
    z-index: 1;
    text-align: center;
}

.pricing .section-heading {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.pricing-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
    margin-top: 40px;
}

.pricing-plan {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(51, 102, 255, 0.08), 0 1.5px 6px rgba(0,0,0,0.03);
    padding: 48px 36px 40px 36px;
    flex: 1 1 320px;
    max-width: 360px;
    min-width: 260px;
    text-align: center;
    transition: transform 0.25s cubic-bezier(.4,2,.6,1), box-shadow 0.25s;
    position: relative;
    border: 2.5px solid rgba(51,102,255,0.08);
    margin-bottom: 0;
    animation: pricing-fadein 0.9s cubic-bezier(.4,2,.6,1);
}

.pricing-plan:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 16px 48px rgba(51, 102, 255, 0.13), 0 2px 8px rgba(0,0,0,0.04);
    border-color: var(--primary-color);
    z-index: 2;
}

.pricing-plan.featured {
    border-color: var(--primary-color);
    background: linear-gradient(120deg, #eef3ff 60%, #e0eaff 100%);
    box-shadow: 0 24px 80px 0 rgba(51,102,255,0.18), 0 2px 8px rgba(0,0,0,0.04);
    transform: scale(1.04);
    border-image: linear-gradient(120deg, var(--primary-color), var(--secondary-color)) 1;
    position: relative;
}

.pricing-plan h3 {
    font-size: 2.1rem;
    margin-bottom: 12px;
    color: var(--primary-color);
    font-weight: 800;
    letter-spacing: 1px;
}

.pricing-price {
    font-size: 2.4rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--dark-color);
    letter-spacing: 1.5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pricing-price span {
    font-size: 1.1rem;
    font-weight: 400;
    color: #888;
    margin-left: 2px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 36px;
    padding: 0;
}

.pricing-features li {
    font-size: 1.13rem;
    margin-bottom: 14px;
    color: #444;
    line-height: 1.6;
    position: relative;
}

.pricing-plan .btn {
    padding: 14px 32px;
    font-size: 1.08rem;
    border-radius: 10px;
    font-weight: 700;
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 2px 8px rgba(51,102,255,0.08);
    border: none;
    transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
}

.pricing-plan .btn:hover {
    background: #2952cc;
    box-shadow: 0 6px 18px rgba(51,102,255,0.13);
    transform: scale(1.04);
}

@media (max-width: 900px) {
    .pricing-grid {
        flex-direction: column;
        align-items: center;
    }
    .pricing-plan {
        max-width: 100%;
        width: 100%;
        margin-bottom: 32px;
    }
}

.plan-desc {
    margin-bottom: 14px;
    color: #888;
    font-size: 1.07rem;
    font-style: italic;
    letter-spacing: 0.2px;
}

@keyframes pricing-fadein {
    from { opacity: 0; transform: translateY(40px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.lang-select-box {
    position: absolute;
    top: 30px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 10;
}

.lang-select-box select {
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 1rem;
    background: #fff;
    color: #333;
    cursor: pointer;
}

.lang-select-box i {
    color: var(--primary-color);
    font-size: 1.1rem;
}