:root {
  --color-bg: #07090e;
  --color-bg-alt: #0d111a;
  --color-surface: rgba(18, 24, 38, 0.7);
  --color-surface-hover: rgba(26, 35, 54, 0.85);
  --color-surface-solid: #121826;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-glow: rgba(0, 240, 255, 0.35);
  --color-primary: #00f0ff;
  --color-primary-dark: #00b4d8;
  --color-secondary: #10b981;
  --color-accent: #8b5cf6;
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  --color-card: rgba(15, 22, 36, 0.65);
  --color-badge: rgba(0, 240, 255, 0.12);
  --grad-primary: linear-gradient(135deg, #00f0ff 0%, #3b82f6 50%, #10b981 100%);
  --grad-accent: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  --grad-surface: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  --grad-dark: radial-gradient(circle at 50% 0%, rgba(0, 240, 255, 0.12) 0%, rgba(7, 9, 14, 0) 70%);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 35px rgba(0, 240, 255, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --blur: blur(16px);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--color-bg);
  background-image: 
    radial-gradient(circle at 15% 10%, rgba(0, 240, 255, 0.07) 0%, transparent 45%),
    radial-gradient(circle at 85% 25%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 60%, rgba(16, 185, 129, 0.05) 0%, transparent 40%);
  background-attachment: fixed;
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: clamp(4rem, 7vw, 6.5rem) 0;
  position: relative;
}

.section-tight {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto clamp(2.5rem, 5vw, 4rem);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.25);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #ffffff;
  margin-bottom: 1rem;
}

.section-title span.highlight {
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.1875rem);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(7, 9, 14, 0.75);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(7, 9, 14, 0.92);
  border-bottom-color: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 1.5rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.header-brand img {
  height: 38px;
  width: auto;
}

.header-nav {
  display: none;
  align-items: center;
  gap: 1.75rem;
}

@media (min-width: 1024px) {
  .header-nav {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.lang-selector-dropdown {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
  transition: var(--transition);
}

.lang-btn:hover {
  border-color: var(--color-primary);
  background: rgba(0, 240, 255, 0.06);
}

.lang-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--color-surface-solid);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 0.5rem;
  min-width: 160px;
  z-index: 120;
}

.lang-menu.open {
  display: block;
}

.lang-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.lang-item:hover, .lang-item.active {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

@media (min-width: 1024px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: #ffffff;
  border-radius: 2px;
  transition: var(--transition);
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 85%;
  max-width: 360px;
  height: 100vh;
  background: var(--color-bg-alt);
  border-left: 1px solid var(--color-border);
  z-index: 200;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.mobile-drawer.open {
  transform: translateX(0);
}

.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 199;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.drawer-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.drawer-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.drawer-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.drawer-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-primary);
}

.drawer-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  padding: 4rem 0 2rem;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-col-brand {
  grid-column: span 1;
}

@media (min-width: 900px) {
  .footer-col-brand {
    grid-column: span 2;
  }
}

.footer-desc {
  margin: 1.25rem 0 1.5rem;
  line-height: 1.6;
  max-width: 380px;
}

.footer-heading {
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a:hover {
  color: var(--color-primary);
  transform: translateX(2px);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8125rem;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.footer-legal-links a:hover {
  color: #ffffff;
}