.download-page .topPicture {
  height: 240px;
  padding-left: 116px;
  background: url(../images/download-top.png) no-repeat center 0;
  background-size: cover;
  color: #555;
  font-size: 48px;
  font-style: normal;
  font-weight: 400;
  line-height: 240px;
}
.download {
  width: 1296px;
  margin: 0 auto;
  padding: 80px 0;
  text-align: center;
}
.download .title {
  color: #000;
  font-size: 48px;
  font-style: normal;
  font-weight: 400;
}
.download .text {
  color: #555;
  font-size: 18px;
  font-style: normal;
  font-weight: 400;
  line-height: 32px;
  padding: 25px 0;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --background-color: #f8fafc;
    --card-color: #ffffff;
    --text-color: #334155;
    --border-color: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

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

header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 1rem 2rem;
    background: none;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary-color);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.tab.active {
    color: var(--primary-color);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
}

.tab:hover:not(.active) {
    color: var(--primary-hover);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.platforms {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.platform {
    background-color: var(--card-color);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.platform:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.platform-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.platform-name {
    font-weight: 600;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.download-options {
    display: none;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.download-options.active {
    display: block;
}

.download-btn {
    display: block;
    width: 100%;
    padding: 0.8rem 1rem;
    margin-bottom: 0.8rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

.architecture {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .platforms {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .tab {
        padding: 0.8rem 1.2rem;
        font-size: 1rem;
    }
}