:root {
  --bg: #050511;
  --bg-alt: #0c0c1b;
  --surface: rgba(14, 14, 34, 0.72);
  --surface-strong: rgba(22, 22, 44, 0.9);
  --surface-card: #17172c;
  --surface-light: #1f1f39;
  --text: #f5f6ff;
  --text-muted: #b5b8d6;
  --heading: #ffffff;
  --accent: #6c7bff;
  --accent-strong: #8b5cff;
  --accent-soft: rgba(108, 123, 255, 0.15);
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.15);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-xl: 0 40px 120px rgba(5, 5, 30, 0.45);
  --shadow-lg: 0 28px 70px rgba(5, 5, 30, 0.32);
  --shadow-md: 0 18px 44px rgba(5, 5, 30, 0.28);
  --shadow-sm: 0 12px 28px rgba(5, 5, 30, 0.2);
}

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

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 20% -10%, rgba(111, 79, 255, 0.32), transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(81, 188, 255, 0.28), transparent 55%), var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--accent);
}

main {
  display: block;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 18, 0.75);
  backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  color: var(--heading);
}

.brand-icon {
  display: inline-flex;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(108, 123, 255, 0.4), rgba(139, 92, 255, 0.4));
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.site-nav a {
  padding: 6px 0;
  position: relative;
  transition: color 0.2s ease;
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.site-nav a:hover {
  color: var(--heading);
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.link-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 500;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 14px 40px rgba(108, 123, 255, 0.35);
}

.link-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 48px rgba(108, 123, 255, 0.4);
}

.hero {
  position: relative;
  padding: 84px 0 96px;
  background: linear-gradient(150deg, rgba(12, 12, 28, 0.92), rgba(10, 10, 24, 0.8));
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.55;
}

.hero::before {
  width: 420px;
  height: 420px;
  background: rgba(108, 123, 255, 0.65);
  top: -140px;
  left: -120px;
}

.hero::after {
  width: 480px;
  height: 480px;
  background: rgba(255, 122, 188, 0.5);
  bottom: -200px;
  right: -160px;
}

.hero-layout {
  display: flex;
  align-items: stretch;
  gap: 52px;
  position: relative;
  z-index: 1;
}

.hero-copy {
  flex: 1.25;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-tag {
  align-self: flex-start;
  background: rgba(108, 123, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #d6d8ff;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.6rem, 4vw, 3.6rem);
  line-height: 1.08;
  color: var(--heading);
}

.hero p {
  margin: 0;
  color: rgba(245, 246, 255, 0.85);
  font-size: 1.05rem;
}

.hero-bullets {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.hero-bullets li {
  position: relative;
  padding-left: 28px;
  color: rgba(245, 246, 255, 0.75);
}

.hero-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 18px rgba(108, 123, 255, 0.6);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.cta.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff;
  box-shadow: 0 20px 50px rgba(108, 123, 255, 0.4);
}

.cta.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 26px 60px rgba(108, 123, 255, 0.45);
}

.cta.ghost {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: var(--heading);
}

.cta.ghost:hover {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

.hero-meta {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.hero-meta strong {
  display: block;
  font-size: 1.05rem;
  color: var(--heading);
}

.hero-meta span {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.hero-visual {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pwa-card {
  width: clamp(320px, 90%, 380px);
  border-radius: var(--radius-xl);
  background: linear-gradient(160deg, rgba(28, 28, 52, 0.9), rgba(18, 18, 38, 0.88));
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-xl);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: relative;
  overflow: hidden;
}

.pwa-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(108, 123, 255, 0.2), rgba(139, 92, 255, 0.05));
  opacity: 0.8;
  pointer-events: none;
}

.pwa-card > * {
  position: relative;
  z-index: 1;
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #5bff9d;
  box-shadow: 0 0 18px rgba(91, 255, 157, 0.65);
}

.card-title {
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--heading);
}

.card-subtitle {
  color: rgba(245, 246, 255, 0.65);
  font-size: 0.9rem;
}

.card-body {
  display: grid;
  gap: 18px;
}

.card-row {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: rgba(108, 123, 255, 0.18);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.card-icon svg {
  width: 26px;
  height: 26px;
}

.card-heading {
  margin: 0;
  font-weight: 600;
  color: var(--heading);
}

.card-copy {
  margin: 4px 0 0;
  font-size: 0.92rem;
  color: rgba(245, 246, 255, 0.7);
}

.card-footer {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-footer span {
  font-size: 0.85rem;
  color: rgba(245, 246, 255, 0.65);
}

.card-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.card-buttons span {
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: var(--heading);
}

.feature-section {
  padding: 96px 0 74px;
  background: linear-gradient(160deg, rgba(6, 6, 20, 0.94), rgba(9, 9, 24, 0.92));
}

.feature-section h2 {
  margin: 0;
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  color: var(--heading);
}

.section-lead {
  margin: 12px 0 42px;
  max-width: 720px;
  color: var(--text-muted);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.feature-card {
  border-radius: var(--radius-lg);
  padding: 28px;
  background: linear-gradient(150deg, rgba(23, 23, 48, 0.95), rgba(15, 15, 34, 0.92));
  border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.3rem;
  color: var(--heading);
}

.feature-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.install-guide {
  padding: 96px 0;
  background: linear-gradient(130deg, rgba(12, 12, 30, 0.9), rgba(9, 9, 24, 0.98));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.install-header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}

.install-header h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.5rem);
  color: var(--heading);
}

.install-header p {
  margin: 0;
  color: var(--text-muted);
  max-width: 720px;
}

.language-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.lang-tab {
  border: 1px solid var(--border);
  background: rgba(20, 20, 40, 0.6);
  color: var(--text-muted);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 0.92rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.lang-tab:hover {
  border-color: var(--accent);
  color: var(--heading);
}

.lang-tab.is-active {
  background: linear-gradient(135deg, rgba(108, 123, 255, 0.22), rgba(139, 92, 255, 0.18));
  border-color: rgba(108, 123, 255, 0.6);
  color: var(--heading);
  box-shadow: 0 10px 26px rgba(108, 123, 255, 0.28);
}

.language-panels {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.lang-panel {
  display: none;
}

.lang-panel.is-active {
  display: block;
}

.platform-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.platform {
  background: linear-gradient(140deg, rgba(22, 22, 46, 0.95), rgba(18, 18, 36, 0.92));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.platform h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--heading);
}

.steps {
  margin: 0;
  padding-left: 20px;
  color: var(--text-muted);
}

.steps li {
  margin-bottom: 10px;
  font-size: 0.96rem;
}

.steps li:last-child {
  margin-bottom: 0;
}

.steps em {
  font-style: normal;
  color: var(--heading);
  font-weight: 600;
}

.screenshot-placeholder {
  margin: 0;
  border: 1px dashed rgba(108, 123, 255, 0.45);
  background: rgba(108, 123, 255, 0.08);
  border-radius: var(--radius-md);
  min-height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 26px 20px;
  text-align: center;
  color: rgba(108, 123, 255, 0.85);
}

.screenshot-placeholder span {
  font-size: 0.9rem;
  font-weight: 500;
}

.screenshot-placeholder figcaption {
  margin: 0;
  font-size: 0.82rem;
  color: rgba(245, 246, 255, 0.7);
}

[dir='rtl'] .platform {
  text-align: right;
}

[dir='rtl'] .steps {
  padding-right: 20px;
  padding-left: 0;
}

.placeholder-note {
  margin-top: 12px;
  color: rgba(245, 246, 255, 0.65);
  font-size: 0.9rem;
}

.resources {
  padding: 80px 0 96px;
  background: linear-gradient(160deg, rgba(7, 7, 20, 0.95), rgba(10, 10, 26, 0.9));
}

.resources h2 {
  margin: 0 0 32px;
  font-size: clamp(2rem, 3vw, 2.5rem);
  color: var(--heading);
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.resource-grid article {
  background: linear-gradient(150deg, rgba(22, 22, 46, 0.92), rgba(18, 18, 36, 0.92));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.resource-grid h3 {
  margin: 0 0 14px;
  font-size: 1.15rem;
  color: var(--heading);
}

.resource-grid ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.94rem;
  display: grid;
  gap: 10px;
}

.resource-grid code {
  background: rgba(255, 255, 255, 0.12);
  padding: 2px 6px;
  border-radius: 6px;
  font-size: 0.88em;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: rgba(5, 5, 15, 0.92);
  backdrop-filter: blur(18px);
  padding: 26px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-inner a {
  color: var(--accent);
  font-weight: 500;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
}

button:focus-visible,
.link-pill:focus-visible,
.cta:focus-visible {
  outline: 2px solid rgba(108, 123, 255, 0.8);
  outline-offset: 2px;
}

@media (max-width: 1080px) {
  .hero-layout {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-visual {
    order: -1;
  }

  .hero-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .platform-group {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .header-inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }

  .hero {
    padding: 72px 0 80px;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .language-tabs {
    justify-content: center;
  }

  .platform-group {
    grid-template-columns: 1fr;
  }

  .resource-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero-bullets li {
    padding-left: 22px;
  }

  .hero-bullets li::before {
    top: 8px;
  }

  .cta {
    width: 100%;
  }

  .pwa-card {
    padding: 24px;
  }

  .language-tabs {
    gap: 8px;
  }

  .lang-tab {
    flex: 1 1 44%;
    text-align: center;
  }

  .screenshot-placeholder {
    padding: 22px 16px;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}