/* Обнуление и базовые настройки */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #f0f0f0;
    background-color: #0a0e17;
    font-size: 16px;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Заголовки */
h1, h2, h3 {
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    color: #4fc3f7;
    text-align: center;
}

h2 {
    font-size: 2rem;
    color: #29b6f6;
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

h3 {
    font-size: 1.5rem;
    color: #81d4fa;
    text-align: center;
}

/* Параграфы и текст */
p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
}

a {
    color: #4fc3f7;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #00b0ff;
    text-decoration: underline;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    text-align: center;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    margin: 8px;
}

.btn.primary {
    background: linear-gradient(135deg, #1e88e5, #0d47a1);
    color: white;
    box-shadow: 0 4px 12px rgba(13, 71, 161, 0.4);
}

.btn.primary:hover {
    background: linear-gradient(135deg, #2196f3, #1565c0);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(13, 71, 161, 0.6);
}

.btn.secondary {
    background: transparent;
    border: 2px solid #4fc3f7;
    color: #4fc3f7;
}

.btn.secondary:hover {
    background: rgba(79, 195, 247, 0.1);
    transform: translateY(-2px);
}

/* Header */
.header {
    background: linear-gradient(120deg, #0a1929, #0d2b45);
    padding: 60px 0;
    text-align: center;
}

.subtitle {
    font-size: 1.2rem;
    color: #bbdefb;
    margin: 16px 0 32px;
}

/* Intro */
.intro {
    padding: 40px 0;
    text-align: center;
}

/* Features */
.features {
    padding: 60px 0;
}

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

.feature-item {
    background: rgba(18, 38, 64, 0.6);
    padding: 24px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid #1e3a5f;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.feature-item h3 {
    color: #4fc3f7;
    margin-bottom: 12px;
}

/* Quick Links */
.quick-links {
    padding: 50px 0;
    background: rgba(10, 18, 30, 0.7);
}

.links-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto;
}

.links-list li {
    margin: 12px 0;
    padding: 12px;
    background: rgba(25, 45, 80, 0.5);
    border-radius: 8px;
    transition: background 0.2s;
}

.links-list li:hover {
    background: rgba(30, 60, 110, 0.7);
}

.links-list a {
    display: block;
    color: #bbdefb;
    text-decoration: none;
}

.links-list a:hover {
    color: #4fc3f7;
    text-decoration: none;
}

/* FAQ */
.faq {
    padding: 50px 0;
}

.faq p {
    margin: 16px 0;
    padding: 12px;
    background: rgba(18, 38, 64, 0.4);
    border-left: 4px solid #1e88e5;
    border-radius: 0 8px 8px 0;
}

/* Call to Action */
.call-to-action {
    padding: 60px 0;
    text-align: center;
    background: linear-gradient(120deg, #0d2b45, #0a1929);
}

/* Footer */
.footer {
    background: #070a12;
    padding: 24px 0;
    text-align: center;
    color: #546e7a;
    font-size: 0.95rem;
    border-top: 1px solid #1a2330;
}

/* Мобильная адаптация */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.7rem;
    }

    .btn {
        display: block;
        width: 90%;
        margin: 10px auto;
    }

    .button-group {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

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