:root {
    --bg-dark: #050505;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    --primary: #10b981;
    --primary-glow: rgba(16, 185, 129, 0.4);
    --text-main: #ffffff;
    --text-muted: #9ca3af;
    --border-subtle: rgba(255, 255, 255, 0.1);
    
    --font-main: 'Inter', sans-serif;
    
    --max-width: 1200px;
    --spacing-section: 120px;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* Typography */
h1, h2, h3 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
}

.cta-button.primary {
    background: var(--primary);
    color: #000;
    box-shadow: 0 0 20px var(--primary-glow);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-glow);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 160px 0 120px;
    text-align: center;
    overflow: hidden;
}

.hero-title {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    max-width: 700px;
    margin: 0 auto 3rem;
    font-size: 1.25rem;
}

.hero-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
    pointer-events: none;
}

/* Sections */
.section {
    padding: var(--spacing-section) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.tag {
    display: inline-block;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.section-desc {
    font-size: 1.25rem;
}

/* Cards & Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid var(--border-subtle);
    transition: transform 0.3s ease, background 0.3s ease;
}

.card.glass {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: rgba(16, 185, 129, 0.3);
}

.card .icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

/* Use Cases */
.use-case-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.use-case-item {
    background: linear-gradient(90deg, var(--bg-card) 0%, transparent 100%);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
}

.use-case-content h3 {
    color: var(--primary);
}

.use-case-content p {
    margin-bottom: 0;
}

/* Technical Box */
.tech-box {
    text-align: center;
    padding: 4rem 2rem;
    border-radius: 24px;
    border: 1px solid var(--border-subtle);
    background: radial-gradient(circle at center, rgba(16, 185, 129, 0.05) 0%, transparent 70%), var(--bg-card);
    max-width: 900px;
    margin: 0 auto;
}

.tech-box h3 {
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

/* Pricing */
.pricing-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-factors {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0 3rem;
}

.pricing-factors li {
    background: var(--bg-card);
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-size: 0.9rem;
    color: var(--text-main);
    border: 1px solid var(--border-subtle);
}

/* FAQ */
.faq-item {
    max-width: 800px;
    margin: 0 auto 1rem;
    border-bottom: 1px solid var(--border-subtle);
}

details {
    padding: 1.5rem 0;
    cursor: pointer;
}

summary {
    font-weight: 600;
    font-size: 1.125rem;
    list-style: none;
    position: relative;
    padding-right: 2rem;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform 0.2s;
}

details[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-answer {
    padding-top: 1rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: 4rem 0;
    text-align: center;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero > * {
    animation: fadeIn 0.8s ease-out forwards;
}

.hero p {
    animation-delay: 0.2s;
    opacity: 0;
}

.hero .cta-button {
    animation-delay: 0.4s;
    opacity: 0;
}

/* Mobile */
@media (max-width: 768px) {
    --spacing-section: 80px;
    
    .hero {
        padding: 120px 0 80px;
    }
}