/* === BASE STYLES === */:root {
  --color-bg-deep: #0a0e27;
  --color-bg-surface: #131838;
  --color-bg-elevated: #1a2050;
  --color-brand-primary: #00d9ff;
  --color-brand-secondary: #0099ff;
  --color-accent-glow: #00ffe0;
  --color-accent-warm: #ffb800;
  --color-neutral-100: #ffffff;
  --color-neutral-300: #c4cdf5;
  --color-neutral-500: #8a93c4;
  --color-border: rgba(0, 217, 255, 0.18);
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --shadow-glow: 0 0 60px rgba(0, 217, 255, 0.35);
  --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.4);
  --font-display: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;
}

* { box-sizing: border-box; }

html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  background: var(--color-bg-deep);
  color: var(--color-neutral-100);
  font-family: var(--font-body);
  line-height: 1.65;
  font-size: 16px;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(0, 217, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 153, 255, 0.12) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

main { position: relative; z-index: 1; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-neutral-100);
}

h1 { font-size: clamp(2.2rem, 5vw, 4.5rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 3.5vw, 3rem); margin-bottom: var(--spacing-md); }
h3 { font-size: clamp(1.3rem, 2vw, 1.75rem); margin-bottom: var(--spacing-sm); }
h4 { font-size: 1.15rem; margin-bottom: 0.5rem; }

p {
  color: var(--color-neutral-300);
  margin-bottom: 1.2rem;
}

a {
  color: var(--color-brand-primary);
  text-decoration: none;
  transition: color 0.3s;
}
a:hover { color: var(--color-accent-glow); }

.container { max-width: 1240px; margin: 0 auto; padding: 0 1.25rem; }

section { padding: var(--spacing-xl) 0; position: relative; }

.cta-button, .btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-brand-secondary));
  color: #001029;
  font-weight: 700;
  font-family: var(--font-display);
  border: none;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(.2,.8,.2,1);
  box-shadow: 0 10px 30px rgba(0, 217, 255, 0.35);
  white-space: nowrap;
}
.cta-button:hover, .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 50px rgba(0, 217, 255, 0.55);
  color: #001029;
}

.info-card, .highlight-box, .promo-block, .accordion-item {
  background: linear-gradient(180deg, var(--color-bg-surface), var(--color-bg-elevated));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: transform 0.4s, box-shadow 0.4s, border-color 0.4s;
}
.info-card:hover, .highlight-box:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-brand-primary);
}

.feature-list, .checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}
.feature-list li, .checklist li {
  position: relative;
  padding: 0.6rem 0 0.6rem 2rem;
  color: var(--color-neutral-300);
  border-bottom: 1px dashed rgba(196, 205, 245, 0.1);
}
.feature-list li:last-child, .checklist li:last-child { border-bottom: none; }
.feature-list li::before, .checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  width: 14px;
  height: 14px;
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-accent-glow));
  border-radius: 4px;
  transform: rotate(45deg);
  box-shadow: 0 0 12px var(--color-brand-primary);
}

.content-image {
  margin: var(--spacing-md) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}
.content-image img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: cover;
}
.content-image.wide img { max-height: 420px; }

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  margin: var(--spacing-md) 0;
  background: var(--color-bg-surface);
}
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--color-neutral-100);
}
.comparison-table th {
  background: linear-gradient(135deg, var(--color-brand-secondary), var(--color-brand-primary));
  color: #001029;
  font-family: var(--font-display);
  padding: 1rem 1.25rem;
  text-align: left;
}
.comparison-table td {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-neutral-300);
}
.comparison-table tr:hover td { background: rgba(0, 217, 255, 0.05); color: var(--color-neutral-100); }

/* === LAYOUT STYLES === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.85);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 1.25rem;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--color-brand-primary), var(--color-accent-glow));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 24px;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-brand-primary);
  border-radius: 2px;
  transition: 0.3s;
}
.hamburger.active span:nth-child(1) { transform: translateY(10px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-10px) rotate(-45deg); }

.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  margin-right: 1rem;
}
.main-nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.main-nav a {
  color: var(--color-neutral-100);
  font-weight: 500;
  font-family: var(--font-display);
  position: relative;
  padding: 0.5rem 0;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-brand-primary);
  transition: width 0.3s;
}
.main-nav a:hover::after { width: 100%; }

.site-footer {
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-lg);
  position: relative;
  z-index: 1;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-nav ul {
  display: flex;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-nav a { color: var(--color-neutral-300); }
.copyright { color: var(--color-neutral-500); margin: 0; }

@media (max-width: 900px) {
  .hamburger { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s;
    margin-right: 0;
  }
  .main-nav.open { max-height: 400px; }
  .main-nav ul {
    flex-direction: column;
    padding: 1rem 1.25rem;
    gap: 0.5rem;
  }
  .header-inner .cta-button {
    max-width: 160px;
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

@media (max-width: 500px) {
  .header-inner { gap: 0.5rem; }
  .logo-text { font-size: 1.15rem; }
  .header-inner .cta-button { padding: 0.6rem 1rem; font-size: 0.85rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 900px) {
  .hamburger { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s;
    margin-right: 0;
  }
  .main-nav.open { max-height: 400px; }
  .main-nav ul {
    flex-direction: column;
    padding: 1rem 1.25rem;
    gap: 0.5rem;
  }
  .header-inner .cta-button {
    max-width: 160px;
    padding: 0.7rem 1.2rem;
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

@media (max-width: 500px) {
  .header-inner { gap: 0.5rem; }
  .logo-text { font-size: 1.15rem; }
  .header-inner .cta-button { padding: 0.6rem 1rem; font-size: 0.85rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 768px) {
  section { padding: var(--spacing-lg) 0; }
  .hero-section { padding: var(--spacing-md) 0 var(--spacing-lg); }
  .hero-cta-group { flex-direction: column; align-items: stretch; }
  .hero-cta-group .cta-button, .hero-cta-group .secondary { width: 100%; text-align: center; }
  .content-image img { max-height: 280px; }
}