:root {
    --header-height: 80px;
    --header-height-scrolled: 80px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --primary-color: #303685;
    --text-color: #2d3748;
    --bg-light: #f7fafc;
    --text-main: #1a202c;
    --text-muted: #4a5568;
    --white: #ffffff;
    --bg-section: #f8fafc;
    --container-width: 1200px;
    --primary-dark: #1d4ed8;
    --border-color: #e2e8f0;
    --accent-bg: #0f172a;
    --radius: 16px;
    --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
    /* Темный фон для главного интро */
    --max-width: 1200px;
}

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

body {
    font-family: 'Inter', sans-serif;
    /* Рекомендую подключить этот шрифт */
    padding-top: var(--header-height);
    /* Чтобы контент не заезжал под хедер */
}

img,
svg {
    max-width: 100%;
}

section,
.block3_hero {
    scroll-margin-top: calc(var(--header-height) + 12px);
}

/* --- Header Base --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    transition: var(--transition);
    background: transparent;
}

/* --- Scrolled State --- */
.header.scrolled {
    height: var(--header-height-scrolled);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    width: 90%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 80px;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

/* --- Desktop Nav --- */
.nav-list {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary-color);
    transition: color 0.2s;
}

.header.scrolled .nav-link {
    color: var(--text-color);
}

.nav-link:hover {
    color: #555dd8 !important;
}

/* --- Hamburger --- */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 44px;
    height: 44px;
    padding: 11px 7px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1100;
}

.hamburger span {
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    transition: var(--transition);
    border-radius: 10px;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: var(--bg-light);
    padding: 80px 0;
}

/* Фоновый блюр (Background Blobs) */
.hero-blob {
    position: absolute;
    top: -10%;
    left: -5%;
    width: 100%;
    height: 600px;
    background: radial-gradient(circle, rgba(190, 227, 248, 0.6) 0%, transparent 70%);
    filter: blur(100px);
    z-index: 1;
    pointer-events: none;
}

.hero-container {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 48px;
    /* Stack gap 12 */
}

/* Logo Box */
.hero-logo-box {
    padding: 16px;
    background: var(--white);
    border-radius: 24px;
    /* 2xl */
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    /* 2xl */
    border: 1px solid #edf2f7;
    display: inline-block;
}

.hero-logo {
    width: 100%;
    max-width: 290px;
    height: auto;
    display: block;
}

/* Typography */
.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    /* Адаптивный размер (4xl -> 7xl) */
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-main);
    margin: 0;
}

.hero-subtitle {
    font-size: 1.25rem;
    /* xl */
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
}

/* Points */
.hero-points {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
}

.point-pill {
    background: var(--white);
    padding: 12px 24px;
    border-radius: 9999px;
    /* full */
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    /* sm */
    border: 1px solid #edf2f7;
    display: flex;
    align-items: center;
    transition: transform 0.2s ease;
}

.point-pill:hover {
    transform: translateY(-2px);
}

.point-icon {
    margin-right: 12px;
}

.point-text {
    font-weight: bold;
    color: #4a5568;
}

/* --- Animations --- */

.animate-item {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Stagger effect (задержка для каждого элемента) */
.animate-item:nth-child(1) {
    animation-delay: 0.2s;
}

.animate-item:nth-child(2) {
    animation-delay: 0.35s;
}

.animate-item:nth-child(3) {
    animation-delay: 0.5s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Block 3 --- */
.solutions {
    padding-bottom: 100px;
}

/* .container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
} */

/* --- Блок 1: Главное интро --- */
.solutions-hero {
    background-color: var(--accent-bg);
    color: var(--white);
    padding: 80px 0;
    margin-bottom: 60px;
    text-align: left;
}

.solutions-hero-title {
    font-size: clamp(1.75rem, 6vw, 2.75rem);
    font-weight: 800;
    line-height: 1.1;
    margin: 0 0 24px 0;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.solutions-hero-subtitle {
    font-size: 1rem;
    line-height: 1.6;
    color: #94a3b8;
    max-width: 650px;
    margin: 0;
    text-transform: uppercase;
    font-weight: 500;
}

/* --- Блок 2: Направления деятельности --- */
.solutions-directions {
    margin-bottom: 40px;
}

.directions-heading {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 0 16px 0;
    text-transform: uppercase;
    color: var(--text-main);
    position: relative;
    display: inline-block;
}

.directions-heading::after {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    background: var(--primary-color);
    margin-top: 8px;
}

.directions-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 48px;
}

/* --- Блок 3: Карточки направлений (Vertical Stack) --- */
.cards-list {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 80px;
}

.card-item {
    flex: 1 1 280px;
    min-width: 0;
    padding: 32px;
    background: var(--bg-light);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.card-item:hover {
    border-color: var(--primary-color);
    background: #ffffff;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 16px 0;
    color: var(--text-main);
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    font-size: 0.875rem;
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 8px;
    color: var(--text-muted);
    font-weight: 500;
}

/* --- Блок 4: Применение защиты --- */
.applications-section {
    background: var(--bg-light);
    border-radius: 32px;
    padding: 48px 56px;
    width: 100%;
}

.apps-heading {
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 0 32px 0;
    text-align: center;
}

.apps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.app-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-main);
}

.app-feature svg {
    flex-shrink: 0;
    color: var(--primary-color);
}

.block3_container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.block3_hero {
    background-color: var(--accent-bg);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.block3_hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    text-transform: uppercase;
}

.block3_hero p {
    font-size: 1.25rem;
    color: var(--border-color);
    letter-spacing: 1px;
}

/* Expertise & Steps */
.block3_section-padding {
    padding: 60px 0;
}

.block3_expertise-heading {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--primary-color);
    position: relative;
}

.block3_expertise-heading::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 15px auto 0;
}

.block3_steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.block3_step-card {
    background: var(--bg-section);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.block3_step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    border-color: var(--primary-color);
}

.block3_step-number {
    background: var(--primary-color);
    color: var(--white);
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.block3_step-content h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* STU Block */
.block3_stu-block {
    background: var(--white);
    border-left: 5px solid var(--primary-color);
    padding: 40px;
    margin-top: 40px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border-radius: 0 12px 12px 0;
}

.block3_stu-block h2 {
    margin-bottom: 20px;
    color: var(--text-main);
}

.block3_stu-list {
    list-style: none;
}

.block3_stu-list li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 15px;
    color: var(--text-muted);
}

.block3_stu-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Innovations */
.block3_innovations {
    background: var(--bg-section);
    border-radius: 20px;
    padding: 50px;
    margin: 60px 0;
}

.block3_innovations-header {
    max-width: 800px;
    margin-bottom: 40px;
}

.block3_innovations-header h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Systems Cards */
.block3_systems-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.block3_system-card {
    background: var(--white);
    padding: 35px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.block3_system-card h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--bg-light);
    font-size: 1.2rem;
}

.block3_system-items {
    list-style: none;
}

.block3_system-items li {
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: var(--text-muted);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.block3_system-items li::before {
    content: "•";
    color: var(--primary-color);
    font-size: 1.5rem;
    line-height: 1;
}

/* Conclusion */
.block3_conclusion {
    background: var(--primary-color);
    color: var(--white);
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    margin-top: 60px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Основные стили секции */
.block4-section {
    padding: 80px 0;
    background-color: var(--bg-section);
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    line-height: 1.6;
    border-top: 1px solid var(--border-color);
}

.block4-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Заголовок и вводная информация */
.block4-header {
    text-align: center;
    margin-bottom: 60px;
}

.block4-title {
    font-size: 2.5rem;
    color: var(--primary-color);
    font-weight: 800;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.block4-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto 30px;
}

.block4-description-box {
    background: var(--white);
    padding: 30px;
    border-left: 5px solid var(--primary-color);
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    margin-bottom: 50px;
}

.block4-description-text {
    font-size: 1.05rem;
    color: var(--text-color);
    margin: 0;
}

/* Сетка проектов */
.block4-projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.block4-project-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    height: 100%;
}

.block4-project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: var(--primary-color);
}

/* Контент карточки */
.block4-card-body {
    padding: 30px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.block4-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 16px 0;
    min-height: 3em;
    display: flex;
    align-items: flex-start;
}

.block4-card-desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin: 0;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    flex-grow: 1;
}

.block5-section-padding {
    padding: 100px 20px;
    background-color: var(--white);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.block5-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Header Styles */
.block5-section-header {
    text-align: center;
    margin-bottom: 60px;
}

.block5-section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.block5-section-header p {
    font-size: 1.125rem;
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Sectors Grid */
.block5-sectors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 100px;
}

.block5-sector-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: var(--radius);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.block5-sector-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--primary-color);
    transition: var(--transition);
}

.block5-sector-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.block5-sector-card:hover::before {
    height: 100%;
}

.block5-sector-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 20px;
    height: 3em;
    display: flex;
    align-items: center;
}

.block5-sector-example,
.block5-sector-needs,
.block5-offer-card {
    overflow-wrap: anywhere;
}

.block5-sector-info {
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.block5-sector-info strong {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.block5-sector-example {
    color: var(--text-color);
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 15px;
}

.block5-sector-needs {
    color: var(--text-main);
    font-weight: 500;
}

/* Unique Approach Section */
.block5-unique-approach-wrapper {
    background-color: var(--accent-bg);
    border-radius: 24px;
    padding: 60px;
    color: var(--white);
}

.block5-approach-header {
    max-width: 800px;
    margin-bottom: 40px;
}

.block5-approach-header h2 {
    font-size: 1.75rem;
    line-height: 1.3;
    font-weight: 700;
    text-transform: uppercase;
}

/* Tags/Sectors chips */
.block5-target-sectors {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 50px;
}

.block5-sector-tag {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: var(--transition);
}

.block5-sector-tag:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* Offers Grid */
.block5-offers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.block5-offer-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 1rem;
    line-height: 1.4;
    font-weight: 500;
    display: flex;
    align-items: center;
    transition: var(--transition);
    cursor: default;
}

.block5-offer-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
    transform: scale(1.02);
}

/* Icons placeholder */
.block5-check-icon {
    margin-right: 15px;
    color: #10b981;
    flex-shrink: 0;
}

.block6-section {
    padding: 100px 20px;
    background-color: var(--bg-section);
    border-bottom: 1px solid var(--border-color);
}

.block6-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Header */
.block6-header {
    text-align: center;
    margin-bottom: 80px;
}

.block6-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.block6-header p {
    font-size: 1rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
    line-height: 1.4;
}

/* Steps Grid */
.block6-steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.block6-step-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    position: relative;
    transition: var(--transition);
}

.block6-step-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.block6-step-number {
    font-size: 4rem;
    font-weight: 900;
    color: rgba(48, 54, 133, 0.08);
    position: absolute;
    top: 10px;
    right: 20px;
    line-height: 1;
}

.block6-step-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
    position: relative;
}

.block6-step-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    font-weight: 500;
}

/* Solutions & Guarantees Section */
.block6-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
}

.block6-info-group {
    background: var(--white);
    padding: 50px;
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

.block6-info-group.block6-dark {
    background: var(--accent-bg);
    color: var(--white);
    border: none;
}

.block6-info-group h4 {
    font-size: 1.5rem;
    margin-bottom: 35px;
    text-transform: uppercase;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.block6-info-group h4::before {
    content: '';
    width: 30px;
    height: 3px;
    background: var(--primary-color);
    margin-right: 15px;
}

.block6-dark h4::before {
    background: var(--white);
}

.block6-item {
    margin-bottom: 30px;
}

.block6-item:last-child {
    margin-bottom: 0;
}

.block6-item-title {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 12px;
    display: block;
    color: var(--primary-color);
}

.block6-dark .block6-item-title {
    color: #60a5fa;
    /* Light blue for dark mode */
}

.block6-list {
    list-style: none;
}

.block6-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-main);
}

.block6-dark .block6-list li {
    color: rgba(255, 255, 255, 0.8);
}

.block6-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.block6-dark .block6-list li::before {
    color: var(--white);
}

.block7-section {
    padding: 100px 20px;
    background-color: var(--white);
}

.block7-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* Support Hero Card */
.block7-support-card {
    background: var(--accent-bg);
    border-radius: var(--radius);
    padding: 60px;
    color: var(--white);
    text-align: center;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1);
}

.block7-support-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(48, 54, 133, 0.4) 0%, transparent 70%);
    z-index: 0;
}

.block7-content-wrapper {
    position: relative;
    z-index: 1;
}

.block7-badge {
    display: inline-block;
    background: var(--primary-color);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 0.05em;
}

.block7-support-card h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    line-height: 1.2;
}

.block7-support-card h3 {
    font-size: 1.25rem;
    color: #60a5fa;
    font-weight: 600;
    margin-bottom: 40px;
    text-transform: uppercase;
}

.block7-desc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    text-align: left;
    margin-bottom: 40px;
}

.block7-desc-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.block7-desc-item p {
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
}

/* Contacts Grid */
.block7-contacts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 100px;
}

.block7-contact-box {
    background: var(--bg-section);
    padding: 40px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.block7-contact-box:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    background: var(--white);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.block7-label {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 15px;
}

.block7-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    display: block;
    margin-bottom: 10px;
    overflow-wrap: anywhere;
    transition: color 0.3s;
}

.block7-value:hover {
    color: var(--primary-color);
}

.block7-availability {
    font-size: 0.9rem;
    color: #10b981;
    font-weight: 600;
    display: flex;
    align-items: center;
}

.block7-availability::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    margin-right: 8px;
    display: inline-block;
}

/* Footer */
.block7-footer {
    background-color: var(--accent-bg);
    padding: 60px 20px;
    color: var(--white);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.block7-footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.block7-footer-info h4 {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 5px;
    letter-spacing: -0.02em;
}

.block7-footer-info p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.block7-copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    width: 100%;
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

@media (max-width: 768px) {
    .hero {
        overflow: visible;
        min-height: calc(100svh - var(--header-height));
        padding: 96px 0 72px;
    }

    .hero-content {
        gap: 28px;
    }

    .hero-title {
        font-size: clamp(1rem, 6vw, 2.8rem);
        line-height: 1.15;
    }

    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.55;
        max-width: 100%;
    }

    .solutions-hero .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .solutions-hero-title,
    .solutions-hero-subtitle {
        display: block;
        width: 100%;
        max-width: 100%;
    }

    .solutions-hero-title {
        margin: 0 0 12px 0;
    }

    .cards-list {
        flex-direction: column;
        gap: 16px;
        margin-bottom: 48px;
    }

    .card-item {
        padding: 24px;
    }

    .applications-section {
        padding: 32px 24px;
        border-radius: 24px;
    }

    .app-feature {
        align-items: flex-start;
        line-height: 1.4;
    }

    .app-feature svg {
        margin-top: 2px;
    }

    .hero-points {
        flex-direction: column;
        align-items: center;
        /* Центрируем элементы по горизонтали, если нужно */
    }

    .block4-title {
        font-size: 1.8rem;
    }

    .block4-projects-grid {
        grid-template-columns: 1fr;
    }

    .block4-section {
        padding: 50px 0;
    }

    .block5-section-header h2 {
        font-size: 1.75rem;
    }

    .block5-unique-approach-wrapper {
        padding: 30px;
    }

    .block5-sectors-grid {
        grid-template-columns: 1fr;
    }

    .block5-offers-grid {
        grid-template-columns: 1fr;
    }

    .block6-header h2 {
        font-size: 1.8rem;
    }

    .block6-details-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .block6-info-group {
        padding: 30px;
    }

    .block7-support-card {
        padding: 40px 20px;
    }

    .block7-contact-box {
        padding: 28px 22px;
    }

    .block7-value {
        font-size: 1.2rem;
    }

    .block7-support-card h2 {
        font-size: 1.75rem;
    }

    .block7-footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 992px) {
    .block3_systems-grid {
        grid-template-columns: 1fr;
    }

    .block3_hero h1 {
        font-size: 1.8rem;
    }
}

/* Адаптивность для десктопа (небольшое расширение сетки) */
@media (min-width: 640px) {
    .apps-grid {
        grid-template-columns: 1fr 1fr;
    }

    .block3_hero {
        padding: 60px 20px;
    }

    .block3_hero h1 {
        font-size: 1.5rem;
    }

    .block3_innovations {
        padding: 30px 20px;
    }

    .block3_stu-block {
        padding: 25px;
    }

    .block3_expertise-heading {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .solutions-hero {
        padding: 60px 0;
    }

    .applications-section {
        padding: 28px 16px;
        border-radius: 24px;
    }
}

/* --- Mobile Nav --- */
@media (max-width: 1024px) {
    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: white;
        display: flex;
        justify-content: center;
        align-items: center;
        transition: var(--transition);
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 18px;
    }

    .nav-link {
        font-size: 20px;
        display: inline-block;
        padding: 12px 16px;
    }

    /* Анимация гамбургера в крестик */
    .hamburger.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
}