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

body {
    font-family: 'Roboto', sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

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

/* Шапка */
.header {
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #1a73e8;
}

.logo span {
    color: #34a853;
}

/* Главный блок */
.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #1a73e8, #1557b0);
    color: white;
    border-radius: 12px;
    margin: 30px 0;
}

.hero h1 {
    font-size: 36px;
    margin-bottom: 15px;
}

.hero p {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.9;
}

/* Сетка курсов */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.course-card {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    border: 1px solid #e0e0e0;
    display: flex;
    flex-direction: column;
}

.course-badge {
    background-color: #e8f0fe;
    color: #1a73e8;
    font-size: 12px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 4px;
    align-self: flex-start;
    margin-bottom: 15px;
}

.course-card h3 {
    margin-bottom: 10px;
    font-size: 20px;
}

.course-card p {
    color: #666;
    margin-bottom: 20px;
    flex-grow: 1;
}

/* Кнопки */
.btn {
    display: inline-block;
    background-color: #1a73e8;
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 6px;
    text-align: center;
    font-weight: 500;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #1557b0;
}

.btn-install {
    background-color: #34a853;
}

.btn-install:hover {
    background-color: #2b8a43;
}

/* Подвал */
.footer {
    text-align: center;
    padding: 20px 0;
    color: #888;
    font-size: 14px;
    border-top: 1px solid #e0e0e0;
}