:root {
    --color-primary: #1E3C72;
    --color-primary-dark: #142c52;
    --color-primary-light: #2A5298;
    --color-gradient-start: #1E3C72;
    --color-gradient-end: #2A5298;
    --color-text-dark: #111827;
    --color-text-gray: #4b5563;
    --color-text-light: #6b7280;
    --color-bg-white: #ffffff;
    --color-bg-gray: #f9fafb;
    --color-bg-gradient: linear-gradient(135deg, #eef2ff 0%, #ffffff 100%);
    --color-border: #e5e7eb;
    --color-error: #dc2626;
    --color-success: #059669;
    --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --container-width: 1200px;
    --container-padding: 24px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-white);
    color: var(--color-text-dark);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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


/* Hero секция - Вариант 2 с 3D эффектом */

.hero {
    position: relative;
    min-height: 100vh;
    padding: 120px 0 80px;
    background: var(--color-bg-gradient);
    overflow: hidden;
}

.hero-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 50%, rgba(30, 60, 114, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.hero-center {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    z-index: 2;
}


/* Вращающаяся орбита */

.hero-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    pointer-events: none;
    z-index: 0;
}

.orbit-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.6;
    animation: orbitRotate 12s infinite linear;
}

.orbit-dot:nth-child(1) {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.orbit-dot:nth-child(2) {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 3s;
}

.orbit-dot:nth-child(3) {
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    animation-delay: 6s;
}

.orbit-dot:nth-child(4) {
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    animation-delay: 9s;
}

@keyframes orbitRotate {
    0% {
        transform: translateX(-50%) rotate(0deg);
        opacity: 0.6;
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scale(1.5);
    }
    100% {
        transform: translateX(-50%) rotate(360deg);
        opacity: 0.6;
    }
}

.hero-main {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(30, 60, 114, 0.1);
    border: 1px solid rgba(30, 60, 114, 0.2);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 32px;
    color: var(--color-text-dark);
}

.hero-title-underline {
    position: relative;
    display: inline-block;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-title-underline::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 4px;
}


/* Карусель преимуществ */

.hero-feature-carousel {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--color-bg-white);
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-dark);
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.6s ease-out both;
}

.feature-item:nth-child(1) {
    animation-delay: 0.1s;
}

.feature-item:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-item:nth-child(3) {
    animation-delay: 0.3s;
}

.feature-item span {
    font-size: 20px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-description {
    font-size: 18px;
    color: var(--color-text-gray);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.6;
}


/* Кнопки */

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    gap: 16px;
}

.btn-play {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    background: transparent;
    color: var(--color-text-dark);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 500;
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
}

.btn-play:hover {
    background: var(--color-bg-gray);
    transform: translateY(-2px);
}

.play-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    transition: transform var(--transition-fast);
}

.btn-play:hover .play-icon {
    transform: scale(1.1);
}


/* 3D Изображение */

.hero-image-3d {
    margin-top: 40px;
    perspective: 1000px;
}

.image-3d-container {
    position: relative;
    display: inline-block;
    animation: float3D 4s infinite ease-in-out;
    transform-style: preserve-3d;
}

@keyframes float3D {
    0%,
    100% {
        transform: translateY(0) rotateX(0deg);
    }
    50% {
        transform: translateY(-15px) rotateX(2deg);
    }
}

.image-3d-container img {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-base);
}

.image-3d-container:hover img {
    transform: scale(1.02);
}

.image-reflection {
    position: absolute;
    bottom: -20px;
    left: 10%;
    width: 80%;
    height: 30px;
    background: radial-gradient(ellipse, rgba(0, 0, 0, 0.15), transparent);
    border-radius: 50%;
    filter: blur(10px);
    opacity: 0.5;
}


/* Волна внизу */

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    pointer-events: none;
}

.hero-wave svg {
    width: 100%;
    height: auto;
    display: block;
}


/* Остальные секции с вашими стилями */

.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: 16px 0;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo-icon {
    font-size: 28px;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    color: var(--color-primary);
}

.nav-list {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-gray);
    transition: color var(--transition-fast);
    position: relative;
    text-decoration: none;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    width: 30px;
    height: 20px;
    position: relative;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 100%;
    height: 2px;
    background: var(--color-text-dark);
    transition: var(--transition-fast);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 16px;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
}

.btn-full {
    width: 100%;
}


/* Stats секция */

.stats {
    padding: 60px 0;
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    color: var(--color-text-gray);
}


/* Features секция */

.features {
    padding: 80px 0;
    background: var(--color-bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(30, 60, 114, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-text-dark);
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--color-bg-gray);
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    background: var(--color-bg-white);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--color-text-gray);
    line-height: 1.5;
}


/* Advantages секция */

.advantages {
    padding: 80px 0;
    background: var(--color-bg-gray);
}

.advantages-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.advantages-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.3;
}

.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
    list-style: none;
}

.advantages-list li {
    font-size: 16px;
    color: var(--color-text-dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

.advantages-list li::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(30, 60, 114, 0.1);
    color: var(--color-primary);
    border-radius: 50%;
    font-weight: bold;
}

.advantages-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
}


/* Form секция */

.form-section {
    padding: 80px 0;
    background: var(--color-bg-gradient);
}

.form-card {
    max-width: 560px;
    margin: 0 auto;
    background: var(--color-bg-white);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    box-shadow: var(--shadow-xl);
}

.form-badge {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.form-card h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.form-card p {
    color: var(--color-text-gray);
    margin-bottom: 32px;
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group input:not([type="checkbox"]) {
    padding: 14px 18px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 16px;
    transition: all var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 60, 114, 0.1);
}

.form-group.checkbox {
    flex-direction: row;
    align-items: center;
    gap: 10px;
}

.form-group.checkbox label {
    font-size: 14px;
    color: var(--color-text-gray);
}

.error-message {
    font-size: 12px;
    color: var(--color-error);
    display: none;
}

.form-message {
    text-align: center;
    font-size: 14px;
    margin-top: 8px;
}


/* Footer */

.footer {
    background: var(--color-text-dark);
    color: #9ca3af;
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    background: none;
    -webkit-background-clip: unset;
    color: white;
    margin-bottom: 16px;
}

.footer-brand p {
    margin-bottom: 20px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    text-decoration: none;
    color: #9ca3af;
}

.social-links a:hover {
    background: var(--color-primary);
    color: white;
}

.footer-links h4,
.footer-contacts h4 {
    color: white;
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links ul,
.footer-contacts {
    display: flex;
    flex-direction: column;
    gap: 12px;
    list-style: none;
}

.footer-links a,
.footer-contacts a {
    transition: var(--transition-fast);
    text-decoration: none;
    color: #9ca3af;
}

.footer-links a:hover,
.footer-contacts a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
}

.footer-bottom a {
    color: #9ca3af;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
}


/* Адаптив */

@media (max-width: 992px) {
    .hero-title {
        font-size: 48px;
    }
    .hero-feature-carousel {
        gap: 16px;
    }
    .feature-item {
        font-size: 13px;
        padding: 6px 16px;
    }
    .advantages-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .hero {
        padding: 100px 0 60px;
    }
    .hero-title {
        font-size: 36px;
    }
    .hero-chip {
        font-size: 12px;
        padding: 6px 16px;
    }
    .hero-description {
        font-size: 16px;
    }
    .hero-buttons {
        gap: 12px;
    }
    .btn-primary,
    .btn-play {
        padding: 10px 20px;
        font-size: 14px;
    }
    .hero-feature-carousel {
        flex-direction: column;
        align-items: center;
    }
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .section-title {
        font-size: 28px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .form-card {
        padding: 32px 24px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    .hero-orbit {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    .hero-title-underline::after {
        bottom: -4px;
        height: 2px;
    }
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    .btn-primary,
    .btn-play {
        justify-content: center;
        width: 100%;
    }
}