:root {
    --bg-color: #050505;
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0a0;
    --accent-color: #3b82f6; /* Blue-ish */
    --accent-glow: rgba(59, 130, 246, 0.15);
    --card-bg: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.1);
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
    --spacing-section: 6rem;
}

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

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

/* Background Abstract Glow */
.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(20, 30, 60, 0.4) 0%, transparent 40%);
    z-index: -1;
    pointer-events: none;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--accent-color);
}

ul {
    list-style-type: none;
    padding-left: 0;
}

li {
    margin-bottom: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-secondary);
}

li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.text-accent {
    color: var(--accent-color);
}

.highlight {
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
}

/* Layout */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 1.8rem;
    display: inline-block;
    vertical-align: middle;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 99px;
    cursor: pointer;
    font-family: var(--font-main);
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 5% 4rem;
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: left;
    margin-bottom: var(--spacing-section);
}

.hero h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    margin-bottom: 1rem;
    background: linear-gradient(180deg, #ffffff 0%, #aaaaaa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero .subtitle {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.3;
}

.hero .description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-top: 1rem;
}

/* Content Sections */
.content-section {
    margin-bottom: var(--spacing-section);
}

.section-title {
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    border-left: 3px solid var(--accent-color);
    padding-left: 1rem;
    letter-spacing: 0.05em;
}

.section-intro {
    font-size: 1.5rem; /* Larger text for intro */
    font-weight: 400;
    margin-bottom: 2rem;
    line-height: 1.5;
}

.feature-list li {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
}

/* Grid for "Why It Matters" */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-2-col {
        grid-template-columns: 1fr 1fr;
    }
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.card h4 {
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.highlight-card {
    background: linear-gradient(145deg, rgba(59, 130, 246, 0.05) 0%, rgba(0,0,0,0) 100%);
    border-color: rgba(59, 130, 246, 0.2);
}

/* Footer style contact */
.footer {
    border-top: 1px solid var(--border-color);
    padding-top: 4rem;
    margin-top: 2rem;
    text-align: center;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.copyright {
    color: #444;
    font-size: 0.8rem;
}

.address {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    line-height: 1.5;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

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

/* FAQ Accordion Styles */
.faq-section {
    max-width: 800px;
    margin: 0 auto;
}

.faq-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.faq-toggle {
    width: 100%;
    background: transparent;
    border: none;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    text-align: left;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 1.1rem;
    font-weight: 600;
    outline: none;
}

.faq-question {
    margin-right: 1rem;
}

.faq-icon {
    font-size: 1.2rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
}

.faq-answer-inner {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-card.open {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.05);
}

.faq-card.open .faq-answer {
    transition: max-height 0.3s cubic-bezier(0.8, 0, 0.2, 1);
}