:root {
    --primary: #FF9900; /* Электрический оранжевый/жёлтый */
    --primary-dark: #E68A00;
    --secondary: #1A2B4C; /* Тёмно-синий, профессиональный */
    --text: #333333;
    --text-light: #666666;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
    --radius: 8px;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
}

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Кнопки */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}
.btn-primary {
    background-color: var(--primary);
    color: var(--secondary);
}
.btn-primary:hover { background-color: var(--primary-dark); }
.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}
.btn-secondary:hover { background-color: var(--white); color: var(--secondary); }
.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 10px 20px;
    font-size: 0.9rem;
}
.btn-outline:hover { background-color: var(--primary); color: var(--secondary); }
.btn-block { width: 100%; text-align: center; }

/* Шапка */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 15px 0;
}
.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--secondary);
}
.logo span { color: var(--primary); }
.nav a {
    margin: 0 15px;
    font-weight: 600;
    color: var(--secondary);
    transition: color 0.3s;
}
.nav a:hover { color: var(--primary); }
.header-phone {
    display: flex;
    align-items: center;
    gap: 15px;
}
.header-phone a {
    font-weight: 700;
    color: var(--secondary);
    font-size: 1.1rem;
}
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--secondary) 0%, #2c3e50 100%);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}
.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.2;
}
.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}
.hero-features {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.hero-features li {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hero-buttons { display: flex; gap: 15px; justify-content: center; }

/* Секции */
.section { padding: 80px 0; }
.section-title {
    text-align: center;
    font-size: 2.2rem;
    color: var(--secondary);
    margin-bottom: 15px;
}
.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* Сетки */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* Карточки преимуществ */
.card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--radius);
    text-align: center;
    transition: transform 0.3s;
}
.card:hover { transform: translateY(-5px); }
.card-icon { font-size: 3rem; margin-bottom: 15px; }
.card h3 { color: var(--secondary); margin-bottom: 10px; }

/* Процесс (Timeline) */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: var(--primary);
    border-radius: 2px;
}
.timeline-item {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}
.timeline-number {
    width: 50px;
    height: 50px;
    background-color: var(--secondary);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.2rem;
    flex-shrink: 0;
    z-index: 2;
    border: 4px solid var(--white);
}
.timeline-content {
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    flex: 1;
}
.timeline-content h3 { color: var(--secondary); margin-bottom: 10px; }

/* Услуги */
.services { background-color: var(--bg-light); }
.service-card {
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    font-weight: 600;
    color: var(--secondary);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
}

/* Контакты */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}
.contact-info h3 { margin-bottom: 20px; color: var(--secondary); }
.contact-info p { margin-bottom: 15px; font-size: 1.1rem; }
.contact-info a { color: var(--primary); font-weight: 600; }

.contact-form {
    background: var(--bg-light);
    padding: 30px;
    border-radius: var(--radius);
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 14px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.form-note { font-size: 0.8rem; color: var(--text-light); margin-top: 10px; text-align: center; }

/* Подвал */
.footer {
    background-color: var(--secondary);
    color: var(--white);
    text-align: center;
    padding: 30px 0;
    opacity: 0.9;
}

/* Адаптивность */
@media (max-width: 768px) {
    .nav, .header-phone { display: none; }
    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 2rem; }
    .hero-features { flex-direction: column; gap: 10px; align-items: center; }
    .hero-buttons { flex-direction: column; }
    .contact-wrapper { grid-template-columns: 1fr; }
    .timeline::before { left: 20px; }
    .timeline-number { width: 40px; height: 40px; font-size: 1rem; }
}