:root {
    --primary: #2563eb;
    --text: #1f2937;
    --bg: #ffffff;
    --box-bg: #f8fafc;
    --accent: #9a3412;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    line-height: 1.7;
    margin: 0;
    background: var(--bg);
}

.container {
    max-width: 850px;
    margin: 0 auto;
    padding: 40px 20px 80px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}

.logo {
    font-weight: 600;
    font-size: 1.4rem;
    color: var(--primary);
    letter-spacing: -1px;
}

.lang-btn {
    background: none;
    border: 1px solid #e5e7eb;
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    margin-left: 4px;
    transition: 0.2s;
}

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

h1 {
    font-size: 2.1rem;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #111;
}

.lead {
    font-size: 1.2rem;
    color: #4b5563;
    margin-bottom: 35px;
    font-weight: 300;
    border-left: 4px solid var(--primary);
    padding-left: 20px;
}

p,
li {
    margin-bottom: 18px;
    font-size: 1.05rem;
}

.rd-block {
    background: #f8fafc;
    padding: 35px;
    border-radius: 20px;
    margin: 40px 0;
    border: 1px solid #e2e8f0;
}

.rd-block h4 {
    margin-top: 0;
    color: #64748b;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.code-container {
    background: #1e293b;
    color: #cbd5e1;
    padding: 25px;
    border-radius: 12px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
    line-height: 1.5;
    margin: 20px 0;
}

.code-comment {
    color: #64748b;
    font-style: italic;
}

.code-keyword {
    color: #f472b6;
}

.code-type {
    color: #818cf8;
}

.urgent-card {
    background: #fff7ed;
    border: 1px solid #ffedd5;
    padding: 35px;
    border-radius: 20px;
    margin-top: 40px;
}

.urgent-card h3 {
    color: var(--accent);
    margin-top: 0;
    font-size: 1.6rem;
    margin-bottom: 15px;
}

.cta-group {
    display: flex;
    gap: 15px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
    display: inline-block;
}

.btn-wa {
    background: #25D366;
    color: white;
}

.btn-tg {
    background: #0088cc;
    color: white;
}

[data-lang] {
    display: none;
}

[data-lang].active {
    display: block;
}