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

:root {
  --bg-primary: #0b0c10;
  --bg-secondary: #131519;
  --bg-tertiary: #1a1d23;
  --bg-hover: #21252c;

  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --surface-elevated: rgba(255, 255, 255, 0.05);

  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;

  --accent: #8b5cf6;
  --accent-hover: #7c3aed;
  --accent-light: rgba(139, 92, 246, 0.12);
  --accent-glow: rgba(139, 92, 246, 0.25);
  --accent-border: rgba(139, 92, 246, 0.35);

  --success: #10b981;
  --success-light: rgba(16, 185, 129, 0.12);

  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.14);

  --shadow: 0 0 0 1px rgba(0, 0, 0, 0.2), 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 0 0 1px rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 0 1px var(--accent-border), 0 4px 20px var(--accent-glow);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --radius-full: 999px;

  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

  --max-width: 1080px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Nav ---------- */

nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 12, 16, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
}

.nav-brand img {
  width: 26px;
  height: 26px;
  border-radius: 6px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.nav-cta {
  background: var(--accent);
  color: white;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 13px;
  transition: background var(--transition);
}

.nav-cta:hover {
  background: var(--accent-hover);
  color: white;
}

/* ---------- Hero ---------- */

.hero {
  padding: 80px 24px 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.35;
  pointer-events: none;
}

.hero-icon {
  width: 88px;
  height: 88px;
  border-radius: 20px;
  margin: 0 auto 28px;
  box-shadow: var(--shadow-lg);
}

.hero h1 {
  font-size: clamp(32px, 5.5vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  max-width: 760px;
  margin: 0 auto 20px;
}

.hero .accent-text {
  background: linear-gradient(135deg, var(--accent) 0%, #ec4899 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.sub {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 36px;
}

.hero-ctas {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.btn-primary {
  background: var(--accent);
  color: white;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 15px;
  box-shadow: var(--shadow-accent);
  transition: transform var(--transition), background var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: white;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 13px 26px;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 15px;
  transition: background var(--transition), border-color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-hover);
}

.hero-meta {
  font-size: 13px;
  color: var(--text-muted);
}

/* ---------- Sections ---------- */

section {
  padding: 72px 24px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
  display: block;
}

h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

.section-lead {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  margin-bottom: 48px;
}

/* Feature grid */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color var(--transition), background var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Compare section */

.compare-wrap {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.compare-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.compare-row:last-child {
  border-bottom: none;
}

.compare-check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--success-light);
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  margin-top: 1px;
}

.compare-text strong {
  display: block;
  font-size: 15px;
  margin-bottom: 2px;
}

.compare-text span {
  font-size: 14px;
  color: var(--text-secondary);
}

.not-have {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}

.not-have h4 {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 600;
  margin-bottom: 14px;
}

.not-have ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.not-have li {
  font-size: 14px;
  color: var(--text-secondary);
  padding-left: 18px;
  position: relative;
}

.not-have li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* Install steps */

.steps {
  counter-reset: step;
  display: grid;
  gap: 16px;
}

.step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.step-num {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-light);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.step p {
  font-size: 15px;
  color: var(--text-secondary);
  padding-top: 4px;
}

.step strong {
  color: var(--text-primary);
}

/* Privacy */

.privacy-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.privacy-icon {
  font-size: 28px;
  flex-shrink: 0;
}

/* Footer */

footer {
  border-top: 1px solid var(--border);
  padding: 40px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 24px;
  font-size: 14px;
  color: var(--text-secondary);
}

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

.footer-note {
  font-size: 13px;
  color: var(--text-muted);
}

.lang-switcher {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.lang-switcher a {
  font-size: 12px;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  transition: color var(--transition), border-color var(--transition);
}

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

@media (max-width: 640px) {
  .nav-links {
    display: none;
  }
  .compare-wrap {
    padding: 24px;
  }
  section {
    padding: 56px 20px;
  }
}

/* ---------- Hero screenshot ---------- */

.hero-shot {
  position: relative;
  max-width: 1000px;
  margin: 64px auto 0;
}

.hero-shot::before {
  content: '';
  position: absolute;
  inset: 8% 6% -6%;
  background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 70%);
  filter: blur(40px);
  opacity: 0.5;
  z-index: 0;
  pointer-events: none;
}

.hero-shot img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  border-radius: 14px;
  border: 1px solid var(--border-hover);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(0, 0, 0, 0.4);
}

@media (max-width: 640px) {
  .hero-shot {
    margin-top: 44px;
  }
  .hero-shot img {
    border-radius: 10px;
  }
}