:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --text-main: #0f172a;
    --text-muted: #475569;
    --bg-body: #ffffff;
    --bg-light: #f8fafc;
    --border: #e2e8f0;
}

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

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-body);
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

/* Навигация */
.navbar {
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    background: rgba(255, 255, 255, 0.9);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-placeholder {
    background: var(--primary);
    color: white;
    font-weight: bold;
    padding: 8px;
    border-radius: 8px;
    font-size: 14px;
}

.brand-name {
    font-weight: 700;
    font-size: 1.125rem;
}

/* Кнопки */
button {
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 500;
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--bg-light);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 16px 32px;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

/* Hero секция */
.hero-container {
    display: flex;
    flex-direction: column;
    gap: 48px;
    align-items: center;
}

.hero-content {
    max-width: 600px;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    background: #dbeafe;
    color: #1e40af;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 24px;
}

h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.hero-image {
    width: 100%;
    max-width: 800px;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    display: block;
}

/* Преимущества */
.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-muted);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.feature-card {
    background: white;
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.feature-card img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
}

/* Футер */
.footer {
    padding: 32px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}

/* Адаптивность для ПК */
@media (min-width: 768px) {
    h1 {
        font-size: 3.5rem;
    }
    
    .hero-container {
        flex-direction: row;
        text-align: left;
        align-items: center;
    }

    .hero-content {
        text-align: left;
        flex: 1;
    }

    .hero-actions {
        display: flex;
        justify-content: flex-start;
    }

    .hero-image {
        flex: 1;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.nav-logo {
    height: 40px;
    width: auto;
    border-radius: 8px; /* опционально, если хочешь скруглить углы у логотипа */
}