:root {
    --primary: #6366f1;
    --secondary: #8b5cf6;
    --accent: #ec4899;
    --dark: #1e1b4b;
    --light: #f0f4ff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Space Grotesk', sans-serif;
}

body {
    background: linear-gradient(45deg, var(--dark), var(--primary));
    color: var(--light);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(var(--accent), transparent);
    filter: blur(100px);
    opacity: 0.2;
    animation: pulse 8s infinite;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    width: 100%;
}

.product-tag {
    display: inline-block;
    padding: 6px 18px;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
    color: rgba(255,255,255,0.75);
}

h1 {
    font-size: 4rem;
    background: linear-gradient(to right, #fff 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-sub {
    font-size: 1.2rem;
    color: rgba(255,255,255,0.7);
    max-width: 640px;
    margin: 0 auto 3rem;
    font-weight: 300;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 0 0 3rem;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 38px;
    left: calc(16.67% + 12px);
    right: calc(16.67% + 12px);
    height: 2px;
    background: linear-gradient(to right, var(--accent), var(--secondary));
    opacity: 0.4;
    z-index: 0;
}

.step {
    padding: 28px 24px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    position: relative;
    border: 1px solid rgba(255,255,255,0.08);
}

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--secondary));
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.step h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.step p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.65);
}

/* Feature cards */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin: 60px 0;
}

.feature {
    padding: 28px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.08);
    transition: all 0.3s ease;
}

.feature:hover {
    background: rgba(255, 255, 255, 0.09);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 1.8rem;
    margin-bottom: 12px;
    display: block;
}

.feature h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.feature p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.6);
}

/* Carousel */
.carousel {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.carousel-viewport {
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(0,0,0,0.25);
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide {
    min-width: 100%;
    margin: 0;
    position: relative;
}

.carousel-slide img {
    display: block;
    width: 100%;
    height: 480px;
    object-fit: contain;
    background: #14122e;
}

.carousel-slide figcaption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 40px 24px 18px;
    font-size: 1rem;
    color: #fff;
    background: linear-gradient(to top, rgba(20,18,46,0.9), transparent);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%;
    background: rgba(30,27,75,0.6);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
    transition: background 0.25s ease, transform 0.25s ease;
    z-index: 2;
}

.carousel-btn:hover {
    background: rgba(139,92,246,0.7);
}

.carousel-btn.prev { left: 14px; }
.carousel-btn.next { right: 14px; }

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 18px;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.25);
    cursor: pointer;
    transition: background 0.25s ease, transform 0.25s ease;
}

.carousel-dot.active {
    background: linear-gradient(135deg, var(--accent), var(--secondary));
    transform: scale(1.3);
}

/* Security */
.scheme {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin: 0;
}

.scheme-item {
    padding: 28px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.08);
    transition: transform 0.3s ease;
}

.scheme-item:hover {
    transform: translateY(-6px);
}

section.container h2 {
    font-size: 2rem;
    text-align: center;
    margin: 70px 0 36px;
    background: linear-gradient(to right, #fff 40%, var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Nav links */
.nav-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 8px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: 12px;
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-link.primary {
    background: linear-gradient(135deg, var(--accent), var(--secondary));
    color: #fff;
    box-shadow: 0 4px 20px rgba(236, 72, 153, 0.4);
}

.nav-link.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(236, 72, 153, 0.6);
}

.nav-link.secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--light);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.nav-link.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-3px);
}

/* Animations */
@keyframes pulse {
    0%   { transform: scale(1);   opacity: 0.2; }
    50%  { transform: scale(1.1); opacity: 0.3; }
    100% { transform: scale(1);   opacity: 0.2; }
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .steps { grid-template-columns: 1fr; }
    .steps::before { display: none; }
    .scheme { grid-template-columns: 1fr; }
    .nav-links { flex-direction: column; align-items: center; }
    .nav-link { width: 100%; max-width: 320px; justify-content: center; }
    .carousel-slide img { height: 300px; }
    .carousel-btn { width: 40px; height: 40px; font-size: 1.5rem; }
}