:root {
    --color-navy: #0a1628;
    --color-navy-dark: #050b14;
    --color-navy-light: #1c2b4b;
    --color-cyan: #64ffda;
    --color-cyan-dark: #45b299;
    --color-blue-light: #a8b2d1;
    --color-white: #ffffff;
    --color-gray: #8892b0;
    --color-gray-light: #ccd6f6;
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --spacing-xs: clamp(0.25rem, 1vw, 0.375rem);
    --spacing-sm: clamp(0.5rem, 1.5vw, 0.75rem);
    --spacing-md: clamp(1rem, 2vw, 1.25rem);
    --spacing-lg: clamp(1.5rem, 3vw, 2rem);
    --spacing-xl: clamp(2rem, 4vw, 3rem);
    --spacing-2xl: clamp(3rem, 6vw, 4rem);
    --spacing-3xl: clamp(4rem, 8vw, 6rem);
    --container-max-width: 1200px;
    --header-height: clamp(60px, 10vw, 80px);
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 15px rgba(100, 255, 218, 0.3)
}

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

html {
    scroll-behavior: smooth
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    font-size: clamp(1rem, 1.2vw, 1.125rem);
    line-height: 1.7;
    color: var(--color-white);
    background-color: var(--color-navy-dark);
    overflow-x: hidden
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    font-weight: var(--font-weight-bold)
}

h1 {
    font-size: 2em;
    margin: .67em 0
}

a {
    text-decoration: none;
    color: inherit
}

ul {
    list-style: none
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl)
}

.spacer-sm {
    height: var(--spacing-md)
}

.spacer-md {
    height: var(--spacing-xl)
}

.spacer-lg {
    height: var(--spacing-3xl)
}

@media(max-width:768px) {
    .container {
        padding: 0 var(--spacing-md)
    }
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(100, 255, 218, 0.1);
    transition: all var(--transition-normal)
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-xl);
    gap: var(--spacing-xl)
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    transition: transform var(--transition-fast)
}

.logo:hover {
    transform: translateY(-2px)
}

.logo-text {
    color: var(--color-white);
    letter-spacing: -0.02em
}

.nav {
    flex: 1;
    display: flex;
    justify-content: center
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl)
}

.nav-link {
    position: relative;
    padding: var(--spacing-sm) 0;
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-light);
    transition: color var(--transition-fast)
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--color-cyan)
}

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

.cta-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-blue-light) 100%);
    color: var(--color-navy-dark);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px rgba(100, 255, 218, 0.3)
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    padding: var(--spacing-sm);
    z-index: 1001
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-cyan);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
    transform-origin: center
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg)
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(10px)
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg)
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(28, 43, 75, 0.9) 100%), url('../images/hero-bg-optimized.jpg') center/cover no-repeat;
    z-index: -1
}

@media(max-width:768px) {
    .hero-background {
        background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(28, 43, 75, 0.9) 100%), url('../images/hero-bg-mobile.jpg') center/cover no-repeat
    }
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(100, 255, 218, 0.15) 0%, transparent 50%), radial-gradient(circle at 70% 50%, rgba(167, 139, 250, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5
    }

    50% {
        opacity: 0.8
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--spacing-3xl) 0
}

.hero-text {
    max-width: 900px;
    margin: 0 auto
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl)
}

.hero-title-main {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: var(--font-weight-extrabold);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    animation: fadeInUp 1s ease-out
}

.hero-title-sub {
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: var(--font-weight-medium);
    color: var(--color-cyan);
    animation: fadeInUp 1s ease-out 0.2s both
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.4s both
}

.hero-cta {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.6s both
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px)
    }

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

.btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius-full);
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm)
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-blue-light) 100%);
    color: var(--color-navy-dark);
    box-shadow: 0 4px 20px rgba(100, 255, 218, 0.4)
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(100, 255, 218, 0.6)
}

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

.btn-secondary:hover {
    background: rgba(100, 255, 218, 0.1);
    transform: translateY(-3px)
}

.floating-toggle {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: clamp(44px, 12vw, 56px);
    height: clamp(44px, 12vw, 56px);
    background: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-blue-light) 100%);
    color: var(--color-navy-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-normal);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transform: scale(.8);
    border: none;
    cursor: pointer;
    backface-visibility: hidden;
    will-change: transform, opacity
}

.floating-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(100, 255, 218, 0.6)
}

.floating-toggle svg {
    transition: transform var(--transition-normal)
}

.floating-toggle:hover svg {
    transform: translateY(-3px)
}

.section {
    padding: var(--spacing-3xl) 0;
    background: var(--color-navy-dark)
}

.section:nth-child(even) {
    background: var(--color-navy)
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto
}

.faq-item {
    background: var(--color-navy);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(100, 255, 218, 0.1);
    transition: all var(--transition-normal)
}

.faq-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-cyan);
    box-shadow: var(--shadow-glow)
}

.faq-question {
    color: var(--color-white);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-semibold)
}

.faq-answer p {
    color: var(--color-gray-light);
    line-height: 1.6
}

.footer {
    background: var(--color-navy);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid rgba(100, 255, 218, 0.1)
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-gray);
    font-size: 0.875rem
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
    list-style: none
}

.footer-links a {
    color: var(--color-gray);
    text-decoration: none;
    transition: color var(--transition-fast)
}

.footer-links a:hover {
    color: var(--color-cyan)
}

@media(max-width:1024px) {
    .container {
        padding: 0 var(--spacing-lg)
    }
}

@media(max-width:768px) {
    .container {
        padding: 0 var(--spacing-md)
    }

    .header-content {
        padding: var(--spacing-sm) var(--spacing-md);
        height: 60px
    }

    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(10, 22, 40, 0.98);
        padding: 100px var(--spacing-xl) var(--spacing-xl);
        transform: translateX(-100%);
        transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        box-shadow: var(--shadow-xl);
        overflow-y: auto;
        z-index: 1040;
        display: flex;
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-bottom: env(safe-area-inset-bottom);
        pointer-events: none;
        visibility: hidden
    }

    .nav.active {
        transform: translateX(0);
        pointer-events: auto;
        visibility: visible
    }

    .nav-menu {
        flex-direction: column;
        gap: var(--spacing-lg);
        align-items: center;
        width: 100%
    }

    .nav-link {
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: 1.25rem;
        text-align: center;
        width: 100%;
        max-width: 320px;
        background: rgba(100, 255, 218, 0.05);
        border: 1px solid rgba(100, 255, 218, 0.1);
        border-radius: var(--border-radius-md);
        min-height: 56px;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all var(--transition-normal);
        color: var(--color-white)
    }

    .nav-link:hover,
    .nav-link.active {
        background: rgba(100, 255, 218, 0.1);
        border-color: var(--color-cyan);
        transform: translateY(-2px)
    }

    .nav-link::after {
        display: none
    }

    .mobile-menu-toggle {
        display: flex;
        min-width: 44px;
        min-height: 44px;
        z-index: 1050
    }

    .cta-btn {
        display: none
    }

    .hero {
        min-height: calc(100vh - 60px);
        padding: 60px 0 var(--spacing-xl)
    }

    .hero-title-main {
        font-size: clamp(2.25rem, 12vw, 3.5rem)
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-md)
    }

    .btn {
        width: 100%;
        min-height: 56px;
        justify-content: center
    }
}