.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 48px;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

.system-details {
    padding: 60px 0;
    background: var(--white);
}

.system-info-card {
    display: flex;
    gap: 40px;
    align-items: center;
    background: var(--bg-color);
    padding: 40px;
    border-radius: 10px;
}

.system-icon-large {
    font-size: 120px;
    color: var(--primary-color);
}

.system-description {
    flex: 1;
}

.system-description h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: var(--text-color);
}

.system-description p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 20px;
}

.system-features {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.system-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    background: var(--white);
    border-radius: 5px;
    color: var(--primary-color);
    font-weight: 500;
}

.system-features i {
    color: #4caf50;
}

.download-section {
    padding: 80px 0;
    background: var(--bg-color);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.download-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.download-card-header {
    background: var(--primary-color);
    color: var(--white);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.download-card-header h3 {
    font-size: 20px;
    margin: 0;
}

.version {
    background: var(--accent-color);
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 14px;
    font-weight: bold;
}

.download-card-body {
    padding: 25px;
}

.download-card-body p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.download-card-body ul {
    list-style: none;
}

.download-card-body ul li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.download-card-body ul li:last-child {
    border-bottom: none;
}

.download-card-footer {
    padding: 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.system-requirements {
    padding: 80px 0;
    background: var(--white);
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.requirement-item {
    text-align: center;
    padding: 30px;
    background: var(--bg-color);
    border-radius: 10px;
    transition: all 0.3s;
}

.requirement-item:hover {
    background: #e8f4f8;
}

.requirement-item i {
    font-size: 50px;
    color: var(--accent-color);
    margin-bottom: 15px;
}

.requirement-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.requirement-item p {
    color: var(--text-light);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 32px;
    }

    .system-info-card {
        flex-direction: column;
        text-align: center;
    }

    .system-icon-large {
        font-size: 80px;
    }

    .system-features {
        justify-content: center;
    }

    .download-grid {
        grid-template-columns: 1fr;
    }

    .requirements-grid {
        grid-template-columns: 1fr;
    }
}

.systems-section {
    padding: 80px 0;
    background: var(--bg-color);
}

.systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.system-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.system-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.system-card .system-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.system-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.system-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.system-card-large {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.system-card-large:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.system-card-header {
    background: var(--primary-color);
    color: var(--white);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.system-card-header .system-icon {
    font-size: 50px;
}

.system-card-header .system-info h3 {
    font-size: 24px;
    margin: 0;
}

.version-badge {
    background: var(--accent-color);
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 14px;
    font-weight: bold;
    margin-left: 10px;
}

.system-card-body {
    padding: 30px;
}

.system-card-body p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.system-features-list {
    list-style: none;
    margin-bottom: 20px;
}

.system-features-list li {
    padding: 8px 0;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.system-features-list i {
    color: #4caf50;
}

.system-versions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.system-versions span {
    padding: 8px 15px;
    background: var(--bg-color);
    border-radius: 5px;
    font-size: 14px;
    color: var(--text-color);
}

.system-card-footer {
    padding: 20px 30px;
    border-top: 1px solid #e0e0e0;
}

.system-card-footer .download-btn {
    display: block;
    width: 100%;
    text-align: center;
}

.system-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
    padding: 15px;
    background: var(--bg-color);
    border-radius: 5px;
}

.system-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: var(--text-light);
}

.system-meta i {
    color: var(--primary-color);
}

.system-languages {
    margin-top: 15px;
}

.system-languages span {
    display: inline-block;
    padding: 4px 12px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 15px;
    font-size: 12px;
}

.systems-section {
    padding: 60px 0;
}

.systems-section:nth-child(even) {
    background: var(--bg-color);
}

.systems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

@media (max-width: 768px) {
    .systems-grid {
        grid-template-columns: 1fr;
    }
    
    .system-meta {
        flex-direction: column;
        gap: 10px;
    }
}

.office-section {
    padding: 80px 0;
    background: var(--bg-color);
}

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

.office-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.office-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.office-card .office-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.office-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.office-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.office-card-large {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.office-card-large:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.office-card-header {
    background: var(--primary-color);
    color: var(--white);
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.office-card-header .office-icon {
    font-size: 50px;
}

.office-card-header .office-info h3 {
    font-size: 24px;
    margin: 0;
}

.office-card-body {
    padding: 30px;
}

.office-card-body p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.office-features-list {
    list-style: none;
    margin-bottom: 20px;
}

.office-features-list li {
    padding: 8px 0;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.office-features-list i {
    color: #4caf50;
}

.office-apps {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.office-apps span {
    padding: 8px 15px;
    background: var(--bg-color);
    border-radius: 5px;
    font-size: 14px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 5px;
}

.office-card-footer {
    padding: 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.tools-section {
    padding: 80px 0;
    background: var(--bg-color);
}

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

.tool-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.tool-card .tool-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.tool-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.tool-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.tool-features {
    list-style: none;
    margin-bottom: 20px;
    text-align: left;
}

.tool-features li {
    padding: 8px 0;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.tool-features i {
    color: #4caf50;
}

.help-section {
    padding: 80px 0;
    background: var(--bg-color);
}

.help-search {
    display: flex;
    gap: 10px;
    max-width: 600px;
    margin: 0 auto 60px;
}

.help-search input {
    flex: 1;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
}

.help-search button {
    padding: 15px 30px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.help-search button:hover {
    background: var(--secondary-color);
}

.help-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.help-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.help-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.help-card .help-icon {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.help-card h3 {
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.help-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.help-steps {
    list-style: none;
    margin-bottom: 20px;
}

.help-steps li {
    padding: 8px 0;
    color: var(--text-color);
}

.help-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

.help-link:hover {
    color: var(--secondary-color);
}

.faq-section {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: var(--bg-color);
}

.faq-question h3 {
    font-size: 18px;
    margin: 0;
    color: var(--text-color);
}

.faq-question i {
    color: var(--primary-color);
    transition: transform 0.3s;
}

.faq-question i.active {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer.active {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 20px 20px;
    color: var(--text-light);
    line-height: 1.8;
}

.contact-support {
    margin-top: 80px;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.contact-card i {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.contact-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.contact-btn {
    display: inline-block;
    padding: 10px 25px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.3s;
}

.contact-btn:hover {
    background: var(--secondary-color);
}

.about-section {
    padding: 80px 0;
    background: var(--bg-color);
}

.about-intro {
    margin-bottom: 60px;
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: center;
}

.about-text {
    flex: 1;
}

.about-text p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-image {
    flex: 1;
    text-align: center;
}

.about-image i {
    font-size: 200px;
    color: var(--primary-color);
    opacity: 0.2;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.mission-card {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.mission-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.mission-card .mission-icon {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.mission-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.mission-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-item {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    position: relative;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.advantage-number {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
}

.advantage-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.advantage-item p {
    color: var(--text-light);
    line-height: 1.8;
}

.region-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.region-card {
    background: var(--white);
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.region-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.region-card .flag {
    font-size: 50px;
    margin-bottom: 15px;
    display: block;
}

.region-card h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-color);
}

.region-card p {
    color: var(--text-light);
    font-size: 14px;
}

.contact-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px;
    margin-top: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.contact-item .contact-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.contact-item .contact-details h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--text-color);
}

.contact-item .contact-details p {
    color: var(--text-light);
    line-height: 1.6;
}

.contact-form {
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: var(--text-color);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: var(--secondary-color);
}

.download-info {
    padding: 80px 0;
    background: var(--white);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.info-card {
    background: var(--bg-color);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.info-card i {
    font-size: 50px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.info-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.info-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.search-section {
    padding: 40px 0;
    background: var(--bg-color);
}

.search-container {
    display: flex;
    gap: 15px;
    max-width: 800px;
    margin: 0 auto;
}

.search-input {
    flex: 1;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-results-section {
    padding: 40px 0;
    min-height: 400px;
}

.results-header {
    text-align: center;
    margin-bottom: 40px;
}

.results-header h2 {
    font-size: 32px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.results-header p {
    color: var(--text-light);
    font-size: 16px;
}

.search-results {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-result-card {
    display: flex;
    gap: 25px;
    background: var(--white);
    border-radius: 10px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.search-result-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.result-icon {
    font-size: 60px;
    color: var(--primary-color);
    flex-shrink: 0;
}

.result-content {
    flex: 1;
}

.result-title {
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 8px;
}

.result-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 12px;
}

.result-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 15px;
}

.result-meta {
    display: flex;
    gap: 20px;
    color: var(--text-light);
    font-size: 14px;
}

.result-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.result-meta i {
    color: var(--primary-color);
}

.result-action {
    display: flex;
    align-items: center;
}

.no-results {
    text-align: center;
    padding: 80px 20px;
}

.no-results i {
    font-size: 80px;
    color: #ccc;
    margin-bottom: 20px;
}

.no-results h3 {
    font-size: 28px;
    color: var(--text-color);
    margin-bottom: 10px;
}

.no-results p {
    color: var(--text-light);
    font-size: 16px;
}

.download-action {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.download-action-card {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.download-action-card h2 {
    font-size: 48px;
    margin-bottom: 20px;
}

.download-action-card > p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.download-btn-large {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 20px 60px;
    background: var(--white);
    color: var(--primary-color);
    border: none;
    border-radius: 50px;
    font-size: 20px;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.download-btn-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.download-note {
    margin-top: 30px;
    font-size: 14px;
    opacity: 0.8;
}

.download-note i {
    margin-right: 5px;
}

.download-steps {
    padding: 80px 0;
    background: var(--white);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step-card {
    text-align: center;
    padding: 30px;
    background: var(--bg-color);
    border-radius: 10px;
    transition: all 0.3s;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.step-content p {
    color: var(--text-light);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .download-btn-large {
        padding: 15px 40px;
        font-size: 18px;
    }
    
    .download-action-card h2 {
        font-size: 36px;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
}

.category-tabs {
    padding: 30px 0;
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
}

.tabs {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s;
}

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

.tab-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.main-content {
    padding: 60px 0;
    background: var(--bg-color);
}

.systems-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.systems-category {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.category-title {
    padding: 25px 30px;
    background: var(--primary-color);
    color: var(--white);
    font-size: 24px;
    margin: 0;
}

.systems-table {
    overflow-x: auto;
}

.systems-table table {
    width: 100%;
    border-collapse: collapse;
}

.systems-table thead {
    background: var(--bg-color);
}

.systems-table th {
    padding: 15px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    font-size: 14px;
}

.systems-table td {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.systems-table tbody tr {
    transition: background 0.3s;
}

.systems-table tbody tr:hover {
    background: var(--bg-color);
}

.system-name {
    display: flex;
    align-items: center;
    gap: 12px;
}

.system-name i {
    font-size: 20px;
    color: var(--primary-color);
}

.system-name span {
    font-weight: 500;
}

.version-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
}

.systems-table .download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.systems-table .download-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
    font-size: 18px;
}

@media (max-width: 768px) {
    .tabs {
        gap: 8px;
    }
    
    .tab-btn {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .category-title {
        font-size: 20px;
        padding: 20px;
    }
    
    .systems-table th,
    .systems-table td {
        padding: 12px 10px;
        font-size: 14px;
    }
    
    .systems-table .download-btn {
        padding: 6px 15px;
        font-size: 14px;
    }
}