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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #f1f5f9;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    padding: 40px 20px;
    color: #f1f5f9;
}

h1 {
    font-size: 2.5em;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.9;
    color: #cbd5e1;
}

.lang-switch {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 30px 0;
}

.lang-btn {
    background: rgba(59, 130, 246, 0.2);
    border: 2px solid rgba(59, 130, 246, 0.5);
    color: #f1f5f9;
    padding: 12px 30px;
    font-size: 1em;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: rgba(59, 130, 246, 0.3);
    transform: translateY(-2px);
}

.lang-btn.active {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.content {
    display: none;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(59, 130, 246, 0.2);
    animation: fadeIn 0.5s ease;
}

.content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section {
    margin-bottom: 40px;
}

.section:last-child {
    margin-bottom: 0;
}

h2 {
    color: #3b82f6;
    font-size: 1.8em;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2em;
}

p {
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 15px;
    font-size: 1.05em;
}

ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

li {
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 10px;
    font-size: 1.05em;
}

strong {
    color: #3b82f6;
    font-weight: 600;
}

a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

a:hover {
    color: #60a5fa;
    text-decoration: underline;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(37, 99, 235, 0.2) 100%);
    padding: 25px;
    border-radius: 15px;
    border-left: 5px solid #3b82f6;
    margin: 20px 0;
}

.highlight-box p {
    color: #60a5fa;
    font-weight: 600;
    margin: 0;
}

.info-box {
    background: linear-gradient(135deg, rgba(255, 243, 224, 0.1) 0%, rgba(255, 224, 178, 0.1) 100%);
    padding: 20px;
    border-radius: 15px;
    border-left: 5px solid #ff9800;
    margin: 15px 0;
}

.info-box p {
    color: #ff9800;
    margin: 0;
}

.contact-box {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    margin-top: 20px;
}

.contact-box a {
    color: white;
    text-decoration: underline;
}

footer {
    text-align: center;
    color: #94a3b8;
    padding: 30px 20px;
    font-size: 0.95em;
}

@media(max-width: 768px) {
    .container {
        padding: 20px;
    }
    h1 {
        font-size: 1.8em;
    }
    .content {
        padding: 30px 25px;
        border-radius: 15px;
    }
    h2 {
        font-size: 1.4em;
    }
    .lang-switch {
        gap: 10px;
    }
    .lang-btn {
        padding: 10px 25px;
        font-size: 0.95em;
    }
}
.back-home {
    display: inline-block;
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    margin-bottom: 20px;
    transition: color 0.3s;
}

.back-home:hover {
    color: #60a5fa;
    text-decoration: underline;
}