/* --- Цветовая палитра и переменные --- */
:root {
    --bg-color: #121224; /* Темный сине-фиолетовый */
    --accent-blue: #00A3FF;
    --text-primary: #EAEAEA;
    --text-secondary: #7A7A8C;
    --card-border: rgba(0, 163, 255, 0.2);
    --card-bg: #1A1A2E;

    --font-primary: 'Inter', sans-serif;
    --font-headings: 'Manrope', sans-serif;
    --border-radius: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.7;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-headings);
    font-weight: 800;
    line-height: 1.3;
}

section, footer {
    padding: 80px 0;
}

hr {
    border: none;
    height: 1px;
    background-color: var(--card-border);
    margin: 60px auto;
    max-width: 200px;
}

/* --- Блок 1: Главный экран --- */
.hero-section {
    padding: 100px 0;
    text-align: center;
}
.hero-section h1 {
    font-size: 3rem;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
}
.hero-section h3 {
    font-size: 1.2rem;
    font-weight: 400;
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-secondary);
}

/* --- Блок 2: Интро --- */
.intro-section {
    text-align: center;
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}
.intro-section h2 {
    margin-bottom: 1.5rem;
}
.intro-section p {
    max-width: 700px;
    margin: 0 auto;
    color: var(--text-secondary);
}

/* --- Блок 3: Методы --- */
.methods-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}
.methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}
.method-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--card-border);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.method-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(0, 163, 255, 0.2);
}
.method-card h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--accent-blue);
}
.pros-cons {
    margin-top: 1.5rem;
    font-size: 0.9rem;
}
.pros-cons p {
    margin-bottom: 0.5rem;
}
.pros-cons strong {
    color: var(--text-primary);
}

/* --- Блок 4: Таблица --- */
.comparison-section {
    background-color: var(--card-bg);
}
.comparison-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}
.table-container {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}
th, td {
    padding: 15px;
    border-bottom: 1px solid var(--card-border);
}
th {
    color: var(--accent-blue);
    font-family: var(--font-headings);
}
td strong {
    color: var(--text-primary);
}

/* --- Блок FAQ --- */
.faq-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}
.accordion {
    max-width: 700px;
    margin: 0 auto;
}
.accordion-item {
    border-bottom: 1px solid var(--card-border);
}
.accordion-header {
    width: 100%;
    background: transparent;
    border: none;
    text-align: left;
    padding: 20px 0;
    font-family: var(--font-headings);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}
.accordion-header:hover {
    color: var(--accent-blue);
}
.accordion-header::after {
    content: '+';
    font-size: 2rem;
    color: var(--accent-blue);
    transition: transform 0.3s ease;
}
.accordion-header.active::after {
    transform: rotate(45deg);
}
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}
.accordion-content p {
    padding: 0 0 20px;
    color: var(--text-secondary);
}


/* --- Блок 5: Финал и список --- */
.final-section {
    background-color: var(--card-bg);
    text-align: center;
}
.final-section h2 {
    margin-bottom: 1rem;
}
.final-section > .container > p {
    max-width: 700px;
    margin: 0 auto 3rem;
    color: var(--text-secondary);
}
.final-section h3 {
    margin-bottom: 2rem;
}
.services-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
.service-link-card {
    display: flex;
    align-items: center;
    background: var(--bg-color);
    padding: 20px;
    border-radius: var(--border-radius);
    text-decoration: none;
    border: 1px solid var(--card-border);
    transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.service-link-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(0, 163, 255, 0.2);
}
.service-logo {
    height: 40px;
    width: 40px;
    margin-right: 15px;
    object-fit: contain;
}
.service-info h4 {
    color: var(--text-primary);
    margin: 0;
    font-size: 1.1rem;
}
.service-info span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* --- Адаптивность --- */
@media (max-width: 768px) {
    section, footer {
        padding: 60px 0;
    }
    .hero-section h1 {
        font-size: 2.2rem;
    }
    .methods-grid {
        grid-template-columns: 1fr;
    }
}