/* CSS variables and theme configuration */
:root {
    --bg-dark: #060913;
    --bg-darker: #03050a;
    --bg-card: rgba(13, 20, 38, 0.7);
    --bg-card-hover: rgba(20, 30, 58, 0.85);
    --primary: #00e5ff;
    --primary-glow: rgba(0, 229, 255, 0.4);
    --secondary: #3b82f6;
    --accent: #ff9f0a;
    --accent-glow: rgba(255, 159, 10, 0.3);
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-neon: rgba(0, 229, 255, 0.15);
    --border-neon-hover: rgba(0, 229, 255, 0.45);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Global Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-darker);
    overflow-x: hidden;
}

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

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-darker);
}
::-webkit-scrollbar-thumb {
    background: rgba(0, 229, 255, 0.2);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 229, 255, 0.5);
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: #ffffff;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

/* Background Particle Canvas */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.content-wrapper {
    position: relative;
    z-index: 1;
}

/* Main Container Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Gradient text */
.gradient-text {
    background: linear-gradient(135deg, #ffffff 30%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.neon-glow-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #ffffff;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--primary-glow);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.neon-glow-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.neon-glow-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.neon-glow-btn:hover::before {
    left: 100%;
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(3, 5, 10, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: 0.5px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px var(--primary-glow);
}

.logo-icon svg {
    width: 18px;
    height: 18px;
    fill: #fff;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
    text-shadow: 0 0 8px var(--primary-glow);
}

.nav-btn {
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: transparent;
    border: none;
}

.mobile-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
    position: relative;
    padding: 180px 0 100px 0;
    text-align: center;
    overflow: hidden;
}

.hero-tag {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    background: rgba(0, 229, 255, 0.1);
    border: 1px solid var(--border-neon);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 229, 255, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(0, 229, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 229, 255, 0); }
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 1.15;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 2.5rem auto;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.secondary-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid var(--border-neon);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.2rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Sections Global */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.85rem;
    display: block;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
}

/* Advantages Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.advantage-card {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(400px circle at var(--x, 0px) var(--y, 0px), rgba(0, 229, 255, 0.08), transparent 80%);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s;
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-neon-hover);
    box-shadow: 0 10px 30px rgba(0, 229, 255, 0.1);
}

.adv-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 229, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.adv-icon svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.advantage-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.advantage-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.pricing-card {
    background: #0d1222;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 2.2rem 2rem;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
}

.pricing-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(0, 229, 255, 0.15);
}

.pricing-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 159, 10, 0.15);
    border: 1px solid rgba(255, 159, 10, 0.3);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pricing-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.pricing-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 1rem;
}

.pricing-title svg {
    width: 20px;
    height: 20px;
    fill: var(--accent);
}

.pricing-price-box {
    display: flex;
    align-items: baseline;
    gap: 0.2rem;
}

.pricing-currency {
    font-size: 1.8rem;
    font-weight: 800;
    color: #ffffff;
}

.pricing-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: #ffffff;
}

.pricing-period {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-left: 0.3rem;
}

.pricing-alert-note {
    background: rgba(255, 255, 255, 0.05);
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    text-align: center;
    border-left: 3px solid var(--primary);
}

.pricing-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.pricing-feature {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: #e5e7eb;
}

.pricing-feature.success svg {
    fill: var(--success);
    margin-top: 2px;
    flex-shrink: 0;
}

.pricing-feature.warning svg {
    fill: var(--warning);
    margin-top: 2px;
    flex-shrink: 0;
}

.pricing-feature.danger svg {
    fill: var(--danger);
    margin-top: 2px;
    flex-shrink: 0;
}

.pricing-action {
    display: block;
    width: 100%;
    padding: 0.8rem;
    background: #18223c;
    color: #ffffff;
    font-weight: 600;
    text-align: center;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.pricing-card:hover .pricing-action {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    box-shadow: 0 4px 15px var(--primary-glow);
    border-color: transparent;
}

/* Tutorials / Tab System */
.tutorial-container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
}

.tutorial-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.7rem 1.8rem;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.tab-btn:hover, .tab-btn.active {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #ffffff;
    box-shadow: 0 4px 15px var(--primary-glow);
    border-color: transparent;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step-item {
    display: flex;
    gap: 1.5rem;
    position: relative;
}

.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 20px;
    top: 50px;
    width: 2px;
    height: calc(100% - 30px);
    background: rgba(255, 255, 255, 0.05);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: 0 0 10px var(--primary-glow);
    flex-shrink: 0;
}

.step-info h4 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.step-info p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
}

.tutorial-detail-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 600;
}

.tutorial-detail-link:hover {
    text-shadow: 0 0 8px var(--primary-glow);
}

/* Articles Knowledge Base Section */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
}

.article-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-neon-hover);
    box-shadow: 0 10px 25px rgba(0, 229, 255, 0.1);
}

.article-thumb {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, #0d1e3a, #070e1b);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.article-thumb svg {
    width: 50px;
    height: 50px;
    opacity: 0.5;
    transition: var(--transition-smooth);
}

.article-card:hover .article-thumb svg {
    opacity: 0.8;
    transform: scale(1.1);
}

.article-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.article-title {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex-grow: 1;
}

.article-more {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.article-more svg {
    width: 16px;
    height: 16px;
    transition: var(--transition-smooth);
}

.article-card:hover .article-more svg {
    transform: translateX(3px);
}

/* User Reviews Section */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 16px;
    position: relative;
}

.review-stars {
    display: flex;
    gap: 0.2rem;
    margin-bottom: 1rem;
}

.review-stars svg {
    width: 16px;
    height: 16px;
    fill: #ffb800;
}

.review-text {
    font-size: 0.95rem;
    color: #e5e7eb;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.review-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.review-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #ffffff;
    box-shadow: 0 0 10px var(--primary-glow);
}

.user-name {
    font-weight: 600;
    color: #ffffff;
    font-size: 0.95rem;
}

.user-title {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* FAQ Accordion Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-header {
    padding: 1.2rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.faq-question {
    font-weight: 600;
    font-size: 1.05rem;
    color: #ffffff;
}

.faq-icon {
    width: 20px;
    height: 20px;
    transition: var(--transition-smooth);
    fill: var(--text-muted);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    fill: var(--primary);
}

.faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-content {
    padding: 0 1.5rem 1.5rem 1.5rem;
    font-size: 0.95rem;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.02);
    padding-top: 1rem;
}

/* Call to Action Banner */
.cta-banner {
    background: linear-gradient(135deg, rgba(13, 20, 38, 0.95), rgba(3, 5, 10, 0.95));
    border: 1px solid var(--border-neon);
    border-radius: 24px;
    padding: 4rem 2rem;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    margin-bottom: 2rem;
}

.cta-banner h2 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.cta-banner p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem auto;
    font-size: 1.1rem;
}

/* Footer styling */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 50px 0 30px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    margin-top: 1rem;
    font-size: 0.85rem;
}

.footer-heading {
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 1.2rem;
    font-size: 1rem;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.5rem;
}

.footer-seo-links {
    display: flex;
    gap: 1.5rem;
}

/* Article Page Layout */
.article-page {
    padding: 130px 0 80px 0;
}

.article-container {
    max-width: 850px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 3.5rem;
}

.article-header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 2rem;
}

.article-header h1 {
    font-size: 2.3rem;
    margin-bottom: 1.2rem;
    line-height: 1.3;
}

.article-breadcrumbs {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.article-breadcrumbs a:hover {
    color: var(--primary);
}

.article-content {
    font-size: 1.1rem;
    color: #e5e7eb;
    line-height: 1.8;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content h2 {
    font-size: 1.6rem;
    margin: 2.5rem 0 1.2rem 0;
    border-left: 4px solid var(--primary);
    padding-left: 0.8rem;
}

.article-content h3 {
    font-size: 1.3rem;
    margin: 2rem 0 1rem 0;
}

.article-content ul, .article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.8rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content a {
    color: var(--primary);
    text-decoration: underline;
    font-weight: 600;
}

.article-content a:hover {
    text-shadow: 0 0 5px var(--primary-glow);
}

.article-content blockquote {
    background: rgba(0, 229, 255, 0.03);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    border-radius: 0 8px 8px 0;
}

.article-nav {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 3.5rem;
    padding-top: 2rem;
    gap: 1.5rem;
}

.article-nav-prev, .article-nav-next {
    flex: 1;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 1.2rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    transition: var(--transition-smooth);
}

.article-nav-prev:hover, .article-nav-next:hover {
    border-color: var(--primary);
    background: rgba(0, 229, 255, 0.02);
}

.article-nav-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.article-nav-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: #ffffff;
}

/* Back to Top button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: -60px;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--primary-glow);
    z-index: 999;
    border: none;
    transition: var(--transition-smooth);
}

.back-to-top.show {
    right: 30px;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Media Queries (Responsive Styling) */
@media (max-width: 1024px) {
    .pricing-grid, .advantages-grid, .articles-grid, .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        padding: 1.5rem;
    }
    .pricing-grid, .advantages-grid, .articles-grid, .reviews-grid {
        grid-template-columns: 1fr;
    }
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: #03050a;
        flex-direction: column;
        align-items: center;
        padding: 3rem 0;
        gap: 2.5rem;
        transition: var(--transition-smooth);
        border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .nav-menu.active {
        left: 0;
    }
    .mobile-toggle {
        display: flex;
    }
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    .article-container {
        padding: 1.5rem;
    }
    .article-header h1 {
        font-size: 1.8rem;
    }
    .article-nav {
        flex-direction: column;
    }
}

/* Tags Cloud Section & Pills Styling */
.tags-cloud-section {
    margin-top: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-neon);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.tags-heading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.tags-heading svg {
    width: 20px;
    height: 20px;
    fill: var(--primary);
}

.tags-cloud-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: #e2e8f0;
    background: rgba(0, 229, 255, 0.06);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 20px;
    transition: var(--transition-smooth);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.tag-pill:hover {
    color: #ffffff;
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.25), rgba(59, 130, 246, 0.3));
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--primary-glow);
}