.carousel-container {
    position: relative;
    height: 100vh;
    overflow: hidden;
    margin-top: 0;
}

.carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    text-align: center;
}

.carousel-slide.active {
    opacity: 1;
}


.carousel-slide .slide-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.carousel-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;

    z-index: 1;
}

.slide-content {
    max-width: 800px;
    padding: 0 2rem 4rem 2rem;
    position: relative;
    z-index: 2;
    margin-bottom: 0;
}

.slide-title {
    font-size: 3.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    color: #fff;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.slide-description {
    font-size: 1.2rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 2rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 400;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: all 0.3s ease;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #fff;
    transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.cta-button:hover::before {
    left: 0;
}

.cta-button:hover {
    color: #333;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    text-shadow: none;
}


.carousel-dots {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    transform: scale(1.2);
}


.products-section {
    padding: 6rem 0;
    background: #fff;
    overflow: hidden;
}

.products-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

.section-title {
    font-size: 3rem;
    font-weight: 300;
    color: #333;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.auto-scroll-hint {
    font-size: 0.9rem;
    color: #999;
    font-weight: 300;
    font-style: italic;
}

.products-scroll-container {
    position: relative;
    overflow: hidden;
    margin-bottom: 3rem;
}

.products-grid {
    display: flex;
    gap: 2rem;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 1rem;
}

.product-card {
    flex: 0 0 350px;
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #e5e5e5;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
    height: 450px;
}

.product-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.product-image {
    height: 200px;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    position: relative;
}


.product-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.4s ease;
}

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


.placeholder-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.3) 100%);
    z-index: 1;
}

.product-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    position: absolute;
    top: 1rem;
    left: 1rem;
    z-index: 3;
    transition: all 0.3s ease;
}

.product-badge:hover {
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.15);
}

.language-tags {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    right: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    z-index: 3;
}

.language-tag {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    color: #333;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
}

.language-tag:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.product-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-header {
    margin-bottom: 1rem;
}

.product-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.product-subtitle {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
    margin: 0;
}

.product-info {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 3px solid #007AFF;
    flex-shrink: 0;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-label {
    font-size: 0.85rem;
    color: #666;
    font-weight: 500;
}

.info-value {
    font-size: 0.85rem;
    color: #333;
    font-weight: 600;
}

.difficulty-stars {
    display: flex;
    gap: 2px;
}

.star {
    color: #ddd;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.star.active {
    color: #ffd700;
}

.product-link {
    color: #007AFF;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    width: fit-content;
    padding: 0;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    margin-top: auto;
}

.product-link::after {
    content: '→';
    font-size: 0.9rem;
    transition: all 0.3s ease;
    opacity: 0.7;
}

.product-link:hover {
    color: #0056b3;
}

.product-link:hover::after {
    transform: translateX(3px);
    opacity: 1;
}


.scroll-indicators {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
}

.scroll-btn {
    width: 50px;
    height: 50px;
    border: 1px solid #e5e5e5;
    border-radius: 50%;
    background: #fff;
    color: #333;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-btn:hover {
    background: #333;
    color: #fff;
    border-color: #333;
    transform: scale(1.08);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.scroll-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: scale(1);
}

.scroll-btn:disabled:hover {
    background: #fff;
    color: #333;
    border-color: #e5e5e5;
}

.scroll-dots {
    display: flex;
    gap: 0.5rem;
}

.scroll-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: all 0.3s ease;
}

.scroll-dot.active {
    background: #333;
    transform: scale(1.2);
}


.innovation-section {
    padding: 6rem 0;
    background: #f8f9fa;
    position: relative;
}

.innovation-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.innovation-header {
    text-align: center;
    margin-bottom: 4rem;
}

.innovation-title {
    font-size: 3rem;
    font-weight: 300;
    color: #333;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.innovation-subtitle {
    font-size: 1.2rem;
    color: #666;
    font-weight: 300;
    line-height: 1.6;
}

.innovation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: stretch;
}


.methodology-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 24px;
    padding: 3rem;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.15);
    display: flex;
    flex-direction: column;
    min-height: 420px;
}

.methodology-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.methodology-visual {
    height: 100px;
    margin-bottom: 2rem;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-icon {
    font-size: 3rem;
    color: rgba(255, 255, 255, 0.9);
    animation: mainPulse 2s ease-in-out infinite;
    z-index: 2;
    position: relative;
}

.orbit-icons {
    position: absolute;
    width: 100px;
    height: 100px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.orbit-icon {
    position: absolute;
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.6);
    animation: orbitFloat 3s ease-in-out infinite;
}

.icon-1 {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.icon-2 {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation-delay: 0.8s;
}

.icon-3 {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 1.6s;
}

.icon-4 {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    animation-delay: 2.4s;
}

@keyframes mainPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.9;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

@keyframes orbitFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-8px) scale(1.1);
        opacity: 0.9;
    }
}

.methodology-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: white;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
    z-index: 2;
}

.methodology-description {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

.methodology-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    position: relative;
    z-index: 2;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.8rem;
    padding: 1rem 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-icon {
    font-size: 1.8rem;
    color: rgba(255, 255, 255, 0.9);
    flex-shrink: 0;
}

.feature-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin: 0;
    line-height: 1.2;
}


.advantages-section {
    background: white;
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 420px;
}

.advantages-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
}

.advantages-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 2rem;
    text-align: center;
}

.advantages-carousel {
    position: relative;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.advantage-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}

.advantage-slide.active {
    opacity: 1;
    transform: translateX(0);
}

.advantage-icon {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1.5rem;
    animation: iconFloat 2s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.advantage-slide h4 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.advantage-slide p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
    max-width: 280px;
}


.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
}

.indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: #667eea;
    transform: scale(1.2);
}

.indicator:hover {
    background: #667eea;
}


.curriculum-section {
    padding: 8rem 0;
    background: #bfd4da;
    position: relative;
    overflow: hidden;
}

.curriculum-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.02) 100%);
    pointer-events: none;
}

.curriculum-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.curriculum-header {
    text-align: center;
    margin-bottom: 6rem;
    color: #333;
}

.curriculum-title {
    font-size: 3.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
    color: #333;
}

.curriculum-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    color: #666;
    line-height: 1.6;
}

.curriculum-stairs {
    position: relative;
    height: 500px;
    margin: 0 auto;
    max-width: 1200px;
}

.stair-step {
    position: absolute;
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    overflow: hidden;
    opacity: 0;
    transform: translateY(50px);
    animation: stepReveal 0.8s ease forwards;
    width: 280px;
    height: 320px;
}


.stair-step:nth-child(1) {

    left: 0;
    bottom: 0;
    animation-delay: 0.2s;
}

.stair-step:nth-child(2) {

    left: 25%;
    bottom: 80px;
    animation-delay: 0.4s;
}

.stair-step:nth-child(3) {

    left: 50%;
    bottom: 160px;
    animation-delay: 0.6s;
}

.stair-step:nth-child(4) {

    left: 75%;
    bottom: 240px;
    animation-delay: 0.8s;
}

@keyframes stepReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stair-step:hover {
    transform: translateY(-15px) scale(1.05) rotate(-2deg);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
    z-index: 10;
}

.stair-step:hover .step-icon {
    transform: scale(1.2) rotate(10deg);
    filter: brightness(1.2);
}

.stair-step:hover::before {
    height: 6px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.stair-step:hover .step-title {
    color: #222;
    transform: translateX(5px);
}

.stair-step:hover .step-level {
    transform: scale(1.1);
    background: #e0e0e0;
}

.stair-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: 20px 20px 0 0;
    transition: all 0.3s ease;
}

.stair-step:nth-child(1)::before {
    background: linear-gradient(90deg, #4CAF50, #81C784);
}

.stair-step:nth-child(2)::before {
    background: linear-gradient(90deg, #2196F3, #64B5F6);
}

.stair-step:nth-child(3)::before {
    background: linear-gradient(90deg, #FF9800, #FFB74D);
}

.stair-step:nth-child(4)::before {
    background: linear-gradient(90deg, #9C27B0, #BA68C8);
}

.step-level {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: #666;
    background: #f0f0f0;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.step-icon {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stair-step:nth-child(1) .step-icon {
    color: #4CAF50;
}

.stair-step:nth-child(2) .step-icon {
    color: #2196F3;
}

.stair-step:nth-child(3) .step-icon {
    color: #FF9800;
}

.stair-step:nth-child(4) .step-icon {
    color: #9C27B0;
}

.step-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.4rem;
    line-height: 1.3;
}

.step-subtitle {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.step-age {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 0.8rem;
    padding: 0.3rem 0.6rem;
    background: #f8f9fa;
    border-radius: 8px;
    display: inline-block;
}

.step-highlights {
    list-style: none;
    padding: 0;
}

.step-highlights li {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 0.3rem;
    padding-left: 1rem;
    position: relative;
    line-height: 1.4;
}

.step-highlights li::before {
    content: '▸';
    position: absolute;
    left: 0;
    font-weight: bold;
}

.stair-step:nth-child(1) .step-highlights li::before {
    color: #4CAF50;
}

.stair-step:nth-child(2) .step-highlights li::before {
    color: #2196F3;
}

.stair-step:nth-child(3) .step-highlights li::before {
    color: #FF9800;
}

.stair-step:nth-child(4) .step-highlights li::before {
    color: #9C27B0;
}


@media (max-width: 1200px) {
    .curriculum-stairs {
        height: 450px;
    }

    .stair-step {
        width: 260px;
        height: 300px;
    }

    .stair-step:nth-child(1) {
        left: 2%;
    }

    .stair-step:nth-child(2) {
        left: 27%;
        bottom: 70px;
    }

    .stair-step:nth-child(3) {
        left: 52%;
        bottom: 140px;
    }

    .stair-step:nth-child(4) {
        left: 77%;
        bottom: 210px;
    }
}

@media (max-width: 768px) {
    .slide-title {
        font-size: 2.5rem;
    }

    .slide-description {
        font-size: 1rem;
    }

    .products-section {
        padding: 4rem 0;
    }

    .products-container {
        padding: 0 1rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .product-card {
        flex: 0 0 280px;
        height: 400px;
    }

    .product-content {
        padding: 1.2rem;
    }

    .product-image {
        height: 160px;
    }

    .product-title {
        font-size: 1.2rem;
    }

    .product-subtitle {
        font-size: 0.85rem;
    }

    .product-info {
        padding: 0.8rem;
        margin-bottom: 1rem;
    }

    .info-label,
    .info-value {
        font-size: 0.8rem;
    }

    .star {
        font-size: 0.8rem;
    }

    .product-link {
        font-size: 0.85rem;
    }

    .language-tag {
        font-size: 0.7rem;
        padding: 0.25rem 0.6rem;
    }

    .product-badge {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
        top: 0.8rem;
        left: 0.8rem;
    }

    .language-tags {
        bottom: 0.8rem;
        left: 0.8rem;
        right: 0.8rem;
        gap: 0.4rem;
    }

    .products-grid {
        gap: 1rem;
    }

    .scroll-indicators {
        gap: 1rem;
    }

    .scroll-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .innovation-section {
        padding: 4rem 0;
    }

    .innovation-title {
        font-size: 2.2rem;
    }

    .innovation-subtitle {
        font-size: 1rem;
    }

    .innovation-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .methodology-section,
    .advantages-section {
        padding: 2rem;
        min-height: 350px;
    }

    .methodology-visual {
        height: 80px;
        margin-bottom: 1.5rem;
    }

    .main-icon {
        font-size: 2.2rem;
    }

    .orbit-icons {
        width: 80px;
        height: 80px;
    }

    .orbit-icon {
        font-size: 1rem;
    }

    .methodology-title,
    .advantages-title {
        font-size: 1.5rem;
    }

    .methodology-description {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }

    .methodology-features {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }

    .feature-item {
        padding: 0.8rem;
        gap: 0.5rem;
    }

    .feature-icon {
        font-size: 1.5rem;
    }

    .feature-item h4 {
        font-size: 0.95rem;
    }

    .advantages-carousel {
        height: 240px;
    }

    .advantage-icon {
        font-size: 2.2rem;
    }

    .advantage-slide h4 {
        font-size: 1.2rem;
    }

    .advantage-slide p {
        font-size: 0.9rem;
        max-width: 250px;
    }

    .curriculum-section {
        padding: 6rem 0;
    }

    .curriculum-title {
        font-size: 2.5rem;
    }

    .curriculum-subtitle {
        font-size: 1.1rem;
    }

    .curriculum-stairs {
        height: auto;
        display: flex;
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }

    .stair-step {
        position: relative !important;
        left: auto !important;
        right: auto !important;
        bottom: auto !important;
        width: 100% !important;
        max-width: 400px !important;
        height: auto !important;
        margin-bottom: 0;
        transform: none;
    }

    .stair-step:hover {
        transform: translateY(-8px) scale(1.02);
    }

    .step-icon {
        font-size: 2rem;
    }

    .step-title {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .slide-title {
        font-size: 2rem;
    }

    .product-card {
        flex: 0 0 260px;
        height: 370px;
    }

    .product-content {
        padding: 1rem;
    }

    .product-image {
        height: 140px;
    }

    .product-title {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .language-tag {
        font-size: 0.65rem;
        padding: 0.2rem 0.5rem;
    }

    .product-badge {
        font-size: 0.7rem;
        padding: 0.25rem 0.5rem;
        top: 0.6rem;
        left: 0.6rem;
    }

    .language-tags {
        bottom: 0.6rem;
        left: 0.6rem;
        right: 0.6rem;
        gap: 0.3rem;
    }

    .innovation-container {
        padding: 0 1rem;
    }

    .innovation-title {
        font-size: 1.8rem;
    }

    .innovation-subtitle {
        font-size: 0.9rem;
    }

    .innovation-content {
        gap: 1.5rem;
    }

    .methodology-section,
    .advantages-section {
        padding: 1.5rem;
        min-height: 300px;
    }

    .methodology-visual {
        height: 60px;
        margin-bottom: 1rem;
    }

    .main-icon {
        font-size: 1.8rem;
    }

    .orbit-icons {
        width: 60px;
        height: 60px;
    }

    .orbit-icon {
        font-size: 0.8rem;
    }

    .methodology-title,
    .advantages-title {
        font-size: 1.3rem;
    }

    .methodology-description {
        font-size: 0.85rem;
        margin-bottom: 1.2rem;
    }

    .methodology-features {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }

    .feature-item {
        padding: 0.6rem;
        gap: 0.4rem;
    }

    .feature-icon {
        font-size: 1.3rem;
    }

    .feature-item h4 {
        font-size: 0.9rem;
    }

    .advantages-carousel {
        height: 200px;
    }

    .advantage-icon {
        font-size: 1.8rem;
    }

    .advantage-slide h4 {
        font-size: 1.1rem;
    }

    .advantage-slide p {
        font-size: 0.85rem;
        max-width: 220px;
    }

    .carousel-indicators {
        gap: 0.4rem;
    }

    .indicator {
        width: 8px;
        height: 8px;
    }

    .curriculum-container {
        padding: 0 1rem;
    }

    .curriculum-title {
        font-size: 2rem;
    }

    .curriculum-subtitle {
        font-size: 1rem;
    }

    .stair-step {
        padding: 1.5rem;
        max-width: 100% !important;
    }

    .step-title {
        font-size: 1.1rem;
    }

    .step-highlights li {
        font-size: 0.8rem;
    }
}


.bind-hint-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.bind-hint-overlay.show {
    opacity: 1;
    visibility: visible;
}

.bind-hint-modal {
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: scale(0.9) translateY(-20px);
    transition: all 0.3s ease;
    position: relative;
}

.bind-hint-overlay.show .bind-hint-modal {
    transform: scale(1) translateY(0);
}

.bind-hint-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    font-size: 16px;
    color: #999;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.2s;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.1;
}

.bind-hint-close:hover {
    background: #f5f5f5;
    color: #666;
    opacity: 0.6;
}

.bind-hint-close i {
    font-size: 12px;
    color: #999; 
    transition: all 0.3s ease;
}

.bind-hint-icon {
    font-size: 48px;
    color:#1890ff; 
    margin-bottom: 16px;
}

.bind-hint-title {
    font-size: 20px;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
}

.bind-hint-content {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 35px;
}

.bind-hint-actions {
    display: flex;
    justify-content: center;
}

.bind-hint-btn-primary {
    padding: 12px 32px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.bind-hint-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

.bind-hint-btn-primary:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .bind-hint-modal {
        margin: 20px;
        padding: 24px;
    }

    .bind-hint-icon {
        font-size: 40px;
    }

    .bind-hint-title {
        font-size: 18px;
    }
}



.navbar.navbar-theme-light {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(15px);
}

.navbar.navbar-theme-light .nav-link {
    color: #2c3e50 !important;
    font-weight: 500;
}

.navbar.navbar-theme-light .nav-link:hover {
    color: #1a252f !important;
    background-color: rgba(44, 62, 80, 0.1);
    backdrop-filter: blur(10px);
}

.navbar.navbar-theme-light .login-btn {
    background: rgba(255, 255, 255, 0.2);
    color: #2c3e50 !important;
    border: 2px solid rgba(44, 62, 80, 0.6);
    font-weight: 500;
}

.navbar.navbar-theme-light .login-btn:hover {
    background: rgba(44, 62, 80, 0.9);
    color: #fff !important;
    border-color: rgba(44, 62, 80, 0.9);
}

.navbar.navbar-theme-light .user-btn {
    background: rgba(255, 255, 255, 0.2);
    color: #2c3e50 !important;
    border: 2px solid rgba(44, 62, 80, 0.6);
    font-weight: 500;
}

.navbar.navbar-theme-light .user-btn:hover {
    background: rgba(44, 62, 80, 0.9);
    color: #fff !important;
    border-color: rgba(44, 62, 80, 0.9);
}


.navbar.navbar-theme-dark {
    background: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(15px);
}

.navbar.navbar-theme-dark .nav-link {
    color: #ffffff !important;
    font-weight: 500;
}

.navbar.navbar-theme-dark .nav-link:hover {
    color: #f8f9fa !important;
    background-color: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
}

.navbar.navbar-theme-dark .login-btn {
    background: rgba(0, 0, 0, 0.2);
    color: #ffffff !important;
    border: 2px solid rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.navbar.navbar-theme-dark .login-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    color: #2c3e50 !important;
    border-color: rgba(255, 255, 255, 0.9);
}

.navbar.navbar-theme-dark .user-btn {
    background: rgba(0, 0, 0, 0.2);
    color: #ffffff !important;
    border: 2px solid rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

.navbar.navbar-theme-dark .user-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    color: #2c3e50 !important;
    border-color: rgba(255, 255, 255, 0.9);
}


.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.navbar.scrolled .nav-link {
    color: #333 !important;
    font-weight: 400;
}

.navbar.scrolled .nav-link:hover {
    color: #000 !important;
    background-color: rgba(0, 0, 0, 0.05);
    backdrop-filter: none;
}

.navbar.scrolled .login-btn {
    background: #000 !important;
    color: #fff !important;
    border-color: #000 !important;
    font-weight: 400;
}

.navbar.scrolled .login-btn:hover {
    background: transparent !important;
    color: #000 !important;
    border-color: #000 !important;
}

.navbar.scrolled .user-btn {
    background: #000 !important;
    color: #fff !important;
    border-color: #000 !important;
    font-weight: 400;
}

.navbar.scrolled .user-btn:hover {
    background: transparent !important;
    color: #000 !important;
    border-color: #000 !important;
}


.navbar * {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}


.navbar.navbar-theme-light .user-avatar {
    background: rgba(44, 62, 80, 0.1);
    border: 1px solid rgba(44, 62, 80, 0.2);
}

.navbar.navbar-theme-dark .user-avatar {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}


@media (max-width: 768px) {
    .navbar.navbar-theme-light .nav-link,
    .navbar.navbar-theme-dark .nav-link {
        font-weight: 500;
    }
    
    .navbar.navbar-theme-light .login-btn,
    .navbar.navbar-theme-light .user-btn {
        font-weight: 500;
    }
    
    .navbar.navbar-theme-dark .login-btn,
    .navbar.navbar-theme-dark .user-btn {
        font-weight: 500;
    }
}