:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --card: #f8f9fa;
  --accent1: #00d4aa;
  --accent2: #00a3ff;
  --accent3: #00ffc8;
  --accent-pink: #ff3d8f;
  --border: rgba(0, 0, 0, 0.1);
  --halo: radial-gradient(
    50% 50% at 50% 50%,
    rgba(0, 212, 170, 0.1),
    rgba(0, 163, 255, 0.05) 40%,
    rgba(255, 255, 255, 0) 70%
  );
  --glow: 0 0 40px rgba(0, 212, 170, 0.2);
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Noto Sans,
    sans-serif;
  color: var(--fg);
  background: #ffffff;
  line-height: 1.6;
  overflow-x: hidden;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
}

.btn {
  display: inline-block;
  padding: 16px 32px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.01em;
  box-shadow: 0 8px 24px rgba(0, 212, 170, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--accent3), var(--accent2));
  opacity: 0;
  transition: opacity 0.3s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 212, 170, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.15) inset;
}
.btn:hover::before {
  opacity: 1;
}
.btn > * {
  position: relative;
  z-index: 1;
}
.btn:active {
  transform: translateY(0);
}
.btn.outline {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border: 1.5px solid rgba(0, 212, 170, 0.3);
  color: var(--fg);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.05) inset;
}
.btn.outline:hover {
  border-color: rgba(0, 212, 170, 0.5);
  background: rgba(255, 255, 255, 1);
}
.btn.small {
  padding: 12px 24px;
  font-size: 0.95rem;
}
.btn.ghost {
  background: transparent;
  border: 1.5px solid var(--border);
  box-shadow: none;
}
.btn.ghost:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.03);
}

.btn-icon {
  width: 20px;
  height: 20px;
  margin-right: 8px;
  display: inline-block;
  vertical-align: middle;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: 1400px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  font-family: Poppins, Inter, system-ui, sans-serif;
  transition: transform 0.2s ease;
}
.brand:hover {
  transform: scale(1.02);
}
.brand img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 212, 170, 0.3);
}
.links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.links a {
  color: var(--fg);
  text-decoration: none;
  opacity: 0.85;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}
.links a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  transition: width 0.3s ease;
}
.links a:hover {
  opacity: 1;
  color: var(--accent1);
}
.links a:hover::after {
  width: 100%;
}

.hero {
  position: relative;
  padding: 100px 24px 80px;
  overflow: hidden;
}
.halo {
  position: absolute;
  inset: -40% -20% auto -20%;
  height: 140%;
  background: var(--halo);
  pointer-events: none;
  filter: blur(60px);
  animation: pulse 8s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 0.6;
    transform: scale(1);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.1);
  }
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}
.hero-copy .eyebrow {
  display: inline-block;
  color: var(--accent1);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 14px;
  background: rgba(0, 212, 170, 0.1);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(48px, 6vw, 72px);
  margin: 0 0 12px;
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.grad {
  background: linear-gradient(135deg, var(--accent1), var(--accent2), var(--accent3));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientShift 6s ease infinite;
}
@keyframes gradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}
.subtitle {
  margin: 0 0 16px;
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  color: #e0e0f0;
  line-height: 1.4;
}
.lead {
  color: var(--muted);
  max-width: 56ch;
  font-size: 1.05rem;
  line-height: 1.7;
}
.cta-row {
  display: flex;
  gap: 16px;
  margin: 32px 0 12px;
  flex-wrap: wrap;
}
.fineprint {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 8px;
}
.hero-media {
  position: relative;
}
.hero-media .device {
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 30px 80px rgba(0, 212, 170, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  transition: transform 0.3s ease;
}
.hero-media .device:hover {
  transform: translateY(-8px) scale(1.02);
}

.social {
  padding: 80px 24px;
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
}
.center {
  text-align: center;
}
.social h3 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}
.social .logos {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 40px;
  align-items: center;
  justify-items: center;
  margin-top: 24px;
  opacity: 0.7;
}
.social .logos img {
  height: 40px;
  filter: grayscale(1) brightness(1.2);
  transition: all 0.3s ease;
}
.social .logos img:hover {
  filter: grayscale(0) brightness(1);
  opacity: 1;
  transform: scale(1.1);
}

.features {
  padding: 100px 24px;
  max-width: 1400px;
  margin: 0 auto;
}
.features h3 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 56px;
  letter-spacing: -0.02em;
}
.features .grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 24px;
}
.card {
  background: rgba(248, 249, 250, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 24px;
  padding: 32px;
  min-height: 200px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 170, 0.3);
  box-shadow: 0 20px 40px rgba(0, 212, 170, 0.15);
  background: rgba(248, 249, 250, 1);
}
.card:hover::before {
  opacity: 1;
}
.card.dark {
  background: rgba(240, 242, 245, 0.9);
  border-color: rgba(0, 212, 170, 0.15);
}
.card h4 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.why-choose {
  padding: 100px 24px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.why-inner {
  max-width: 1400px;
  margin: 0 auto;
}
.why-choose h3 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 64px;
  letter-spacing: -0.02em;
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
  margin-top: 32px;
}
.benefit {
  text-align: center;
  padding: 32px 24px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 24px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.benefit:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 212, 170, 0.3);
  box-shadow: 0 20px 40px rgba(0, 212, 170, 0.15);
  background: rgba(255, 255, 255, 0.95);
}
.benefit-icon {
  font-size: 3rem;
  margin-bottom: 24px;
  display: block;
}
.benefit h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
}
.benefit p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.testimonials {
  padding: 100px 24px;
  max-width: 1400px;
  margin: 0 auto;
}
.testimonials-inner {
  text-align: center;
}
.testimonials h3 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 64px;
  letter-spacing: -0.02em;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 32px;
}
.testimonial {
  background: rgba(248, 249, 250, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 24px;
  padding: 32px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: left;
  position: relative;
}
.testimonial::before {
  content: '"';
  position: absolute;
  top: 16px;
  left: 24px;
  font-size: 4rem;
  color: var(--accent1);
  opacity: 0.3;
  font-family: serif;
  line-height: 1;
}
.testimonial:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 212, 170, 0.3);
  box-shadow: 0 20px 40px rgba(0, 212, 170, 0.15);
  background: rgba(248, 249, 250, 1);
}
.testimonial-content {
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.testimonial-content p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--fg);
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 16px;
}
.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent1), var(--accent2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
  overflow: hidden;
}
.author-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.author-name {
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 4px;
}
.author-title {
  font-size: 0.9rem;
  color: var(--muted);
}

.screens {
  padding: 80px 24px;
  max-width: 1400px;
  margin: 0 auto;
}
.screens-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.screens img {
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}
.screens img:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 212, 170, 0.2);
}

.ratings {
  padding: 60px 24px;
  max-width: 1400px;
  margin: 0 auto;
}
.ratings-inner {
  display: flex;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.15), rgba(0, 163, 255, 0.15));
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 212, 170, 0.3);
  border-radius: 24px;
  padding: 36px 40px;
  flex-wrap: wrap;
  box-shadow: 0 8px 32px rgba(0, 212, 170, 0.2);
}
.badge {
  font-size: 32px;
  letter-spacing: 0.15em;
  color: var(--accent1);
  text-shadow: 0 0 20px rgba(0, 212, 170, 0.5);
}
.ratings-inner h3 {
  margin: 0 0 6px;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.muted {
  color: var(--muted);
}

.cta {
  padding: 80px 24px;
  max-width: 1400px;
  margin: 0 auto;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.08), rgba(0, 163, 255, 0.08));
  backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 212, 170, 0.2);
  border-radius: 32px;
  padding: 48px 56px;
  flex-wrap: wrap;
  gap: 32px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2);
}
.cta-copy h3 {
  margin: 0 0 8px;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.cta-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}
.cta-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.cta-policies {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}
.policy-link {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.policy-link:hover {
  color: var(--accent1);
}

.footer {
  padding: 60px 24px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(10, 10, 15, 0.95);
  backdrop-filter: blur(20px);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  align-items: start;
  max-width: 1400px;
  margin: 0 auto;
}
.brand-col p {
  font-size: 0.9rem;
  margin-top: 16px;
}
.footer .footer-brand img {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}
.links-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer a {
  color: var(--fg);
  text-decoration: none;
  opacity: 0.8;
  transition: all 0.2s ease;
  font-size: 0.95rem;
}
.footer a:hover {
  opacity: 1;
  color: var(--accent1);
  transform: translateX(2px);
}
.footer h5 {
  margin: 0 0 16px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent1);
}

/* ------ MOBILE RESPONSIVE BELOW ------ */
.card-section {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
  padding: 64px;
  margin: 48px 0;
}

@media (max-width: 1200px) {
  .nav-inner {
    padding: 16px 24px;
  }
  .hero {
    padding: 80px 24px 60px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .features .grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .card-section {
    padding: 48px;
    margin: 32px 0;
  }
}

@media (max-width: 900px) {
  .links {
    gap: 20px;
    font-size: 0.9rem;
  }
  .hero {
    padding: 60px 20px 48px;
  }
  .hero-grid {
    gap: 40px;
  }
  .hero-media {
    max-width: 400px;
    margin: 0 auto;
  }
  .features {
    padding: 60px 20px;
  }
  .why-choose {
    padding: 60px 20px;
  }
  .benefits-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .testimonials {
    padding: 60px 20px;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .screens {
    padding: 60px 20px;
  }
  .screens-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .ratings {
    padding: 48px 20px;
  }
  .ratings-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    padding: 28px 32px;
  }
  .cta {
    padding: 60px 20px;
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 28px;
    padding: 36px 32px;
  }
  .foot-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .card-section {
    padding: 32px;
    border-radius: 24px;
    margin: 24px 0;
  }
}

@media (max-width: 600px) {
  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
  }
  .links {
    gap: 16px;
    flex-wrap: wrap;
  }
  .hero {
    padding: 40px 16px 32px;
  }
  .hero-grid {
    gap: 32px;
  }
  .hero h1 {
    font-size: 2.25rem;
  }
  .hero-media {
    max-width: 100%;
  }
  .cta-row {
    flex-direction: column;
    width: 100%;
  }
  .cta-row .btn {
    width: 100%;
    text-align: center;
  }
  .social {
    padding: 48px 16px;
  }
  .social .logos {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .features {
    padding: 48px 16px;
  }
  .why-choose {
    padding: 48px 16px;
  }
  .benefit {
    padding: 24px 20px;
  }
  .testimonials {
    padding: 48px 16px;
  }
  .testimonial {
    padding: 24px;
  }
  .features .grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .card {
    min-height: 160px;
    padding: 24px;
  }
  .screens {
    padding: 48px 16px;
  }
  .screens-inner {
    gap: 16px;
  }
  .ratings {
    padding: 40px 16px;
  }
  .ratings-inner {
    padding: 24px 20px;
    gap: 20px;
  }
  .badge {
    font-size: 24px;
  }
  .cta {
    padding: 48px 16px;
  }
  .cta-inner {
    padding: 28px 24px;
    gap: 24px;
    border-radius: 24px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
    text-align: center;
  }
  .footer {
    padding: 40px 16px 32px;
  }
  .foot-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .brand img {
    width: 32px;
    height: 32px;
  }
  .card-section {
    padding: 24px;
    border-radius: 20px;
    margin: 20px 0;
  }
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection styles */
::selection {
  background: rgba(0, 212, 170, 0.3);
  color: var(--fg);
}

/* Focus styles for accessibility */
.btn:focus,
.links a:focus,
.footer a:focus {
  outline: 2px solid var(--accent1);
  outline-offset: 2px;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .halo {
    animation: none;
  }

  .grad {
    animation: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border: rgba(255, 255, 255, 0.3);
    --muted: #b0b0b0;
  }
}

/* Dark theme is default, but prepare for light theme toggle */
@media (prefers-color-scheme: light) {
  /* Keep dark theme as primary design */
}

/* Scroll indicators */
.nav {
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease;
}

/* Enhanced glassmorphism effect */
.card,
.testimonial,
.benefit,
.cta-inner,
.ratings-inner {
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

/* Subtle text enhancement */
h1,
h2,
h3,
h4,
h5,
h6 {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Enhanced button hover effects */
.btn:hover {
  box-shadow: 0 12px 32px rgba(0, 212, 170, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.15) inset,
    0 0 20px rgba(0, 212, 170, 0.3);
}

/* Performance optimizations */
.hero-media .device,
.screens img {
  will-change: transform;
  backface-visibility: hidden;
}

/* Loading skeleton placeholder (for future use) */
.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.05) 25%,
    rgba(255, 255, 255, 0.1) 50%,
    rgba(255, 255, 255, 0.05) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}