:root {
  --primary: #059669;
  --primary-light: #10b981;
  --primary-dark: #047857;
  --primary-bg: #ecfdf5;
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --bg-page: #090d16;
    --bg-card: #111827;
    --border: #1e293b;
    --border-light: #172033;
    --primary-bg: rgba(16, 185, 129, 0.12);
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-page);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

/* Header & Navigation */
header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(8px);
}

.nav-container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-main);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-icon {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  object-fit: cover;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.logo-title {
  font-size: 1.18rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* Mobile Hamburger Toggle */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-main);
  cursor: pointer;
  padding: 0;
  transition: all 0.2s ease;
}

.mobile-menu-btn:hover {
  background-color: var(--border-light);
}

.nav-menu {
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  text-decoration: none;
}

.nav-btn-play {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background-color: var(--primary);
  color: #ffffff !important;
  font-weight: 600 !important;
  font-size: 0.88rem !important;
  text-decoration: none !important;
  box-shadow: 0 2px 6px rgba(5, 150, 105, 0.25);
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.nav-btn-play:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.35);
}

/* Hide mobile-bar button on desktop */
.nav-right .nav-btn-play {
  display: none;
}

/* Hero & Main Content */
.container {
  max-width: 900px;
  margin: 40px auto 80px;
  padding: 0 24px;
}

.hero-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
  margin-bottom: 32px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background-color: var(--primary-bg);
  color: var(--primary-light);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.hero-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  margin-bottom: 12px;
}

.hero-meta {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.highlight-box {
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.highlight-box .box-icon {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.highlight-box h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.highlight-box p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Document Body Sections */
.policy-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px;
  box-shadow: var(--shadow-sm);
}

.policy-card h2 {
  font-size: 1.45rem;
  font-weight: 750;
  letter-spacing: -0.02em;
  margin-top: 36px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-main);
}

.policy-card h2:first-of-type {
  margin-top: 0;
}

.policy-card h3 {
  font-size: 1.15rem;
  font-weight: 650;
  margin-top: 22px;
  margin-bottom: 10px;
}

.policy-card p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 1rem;
}

.policy-card ul,
.policy-card ol {
  color: var(--text-muted);
  margin-left: 24px;
  margin-bottom: 20px;
}

.policy-card li {
  margin-bottom: 8px;
}

.callout-box {
  background-color: var(--primary-bg);
  border-left: 4px solid var(--primary-light);
  padding: 16px 20px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
}

.callout-box p {
  color: var(--text-main);
  margin-bottom: 0;
  font-size: 0.95rem;
}

.callout-warning {
  background-color: rgba(239, 68, 68, 0.08);
  border-left-color: #ef4444;
}

.callout-warning p {
  color: var(--text-main);
}

/* Google Play Badge Button */
.btn-playstore {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background-color: #000000;
  color: #ffffff !important;
  padding: 10px 22px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
  text-decoration: none !important;
  transition: all 0.2s ease;
}

.btn-playstore:hover {
  background-color: #1a1a1a;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 255, 255, 0.35);
}

.play-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.15;
}

.play-sub {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: #a1a1aa;
  text-transform: uppercase;
}

.play-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #ffffff;
}

/* Download CTA Card */
.download-cta-card {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.1) 0%, rgba(16, 185, 129, 0.05) 100%);
  border: 1px solid rgba(5, 150, 105, 0.25);
  border-radius: var(--radius-lg);
  padding: 44px 32px;
  text-align: center;
  max-width: 900px;
  margin: 0 auto 60px;
  box-shadow: var(--shadow-sm);
}

.download-cta-card h2 {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.download-cta-card p {
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 28px;
  font-size: 1.05rem;
}

/* Footer */
footer {
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 48px 24px 40px;
  margin-top: auto;
}

.footer-content {
  max-width: 1040px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
  list-style: none;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-disclaimer {
  max-width: 760px;
  margin: 0 auto 16px;
  font-size: 0.82rem;
  color: var(--text-light);
  line-height: 1.55;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-light);
}

/* Hero Section & Buttons */
.hero-banner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 56px 24px 44px;
  max-width: 900px;
  margin: 0 auto;
}

.hero-app-icon {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  margin-bottom: 20px;
}

.hero-banner h1 {
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 850;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
  line-height: 1.2;
}

.hero-banner p.lead {
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 28px;
  line-height: 1.6;
}

.cta-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.cta-secondary-row {
  display: flex;
  gap: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(5, 150, 105, 0.35);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background-color: var(--border-light);
  text-decoration: none;
}

.feature-graphic-container {
  max-width: 860px;
  margin: 16px auto 60px;
  padding: 0 24px;
}

.feature-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 80px;
  padding: 0 24px;
}

.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
}

.feature-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-bg);
  color: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature-item h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-item p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* Mobile Responsive Optimization (<= 768px) */
@media (max-width: 768px) {
  .nav-container {
    padding: 12px 16px;
  }

  .logo-title {
    font-size: 1.05rem;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-right .nav-btn-play {
    display: inline-flex;
    padding: 6px 12px;
    font-size: 0.8rem !important;
    gap: 6px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    padding: 12px 16px 16px;
    z-index: 100;
  }

  .nav-menu.is-active {
    display: block;
    animation: slideDown 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-links li.desktop-only {
    display: none;
  }

  .nav-links a {
    display: flex;
    align-items: center;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

  .nav-links a:hover,
  .nav-links a.active {
    background-color: var(--primary-bg);
    color: var(--primary-light);
  }

  /* Hero Section Mobile Optimization */
  .hero-banner {
    padding: 32px 16px 36px !important;
  }

  .hero-app-icon {
    width: 80px !important;
    height: 80px !important;
    border-radius: 20px !important;
    margin-bottom: 16px !important;
  }

  .hero-banner h1 {
    font-size: clamp(2rem, 7vw, 2.4rem) !important;
    margin-bottom: 12px !important;
  }

  .hero-banner p.lead {
    font-size: 1rem !important;
    margin-bottom: 24px !important;
    line-height: 1.55 !important;
  }

  .cta-group {
    flex-direction: column;
    align-items: center;
    gap: 12px !important;
    width: 100%;
  }

  .btn, .btn-playstore {
    width: 100% !important;
    max-width: 320px !important;
    justify-content: center !important;
  }

  .cta-secondary-row {
    display: flex;
    gap: 10px;
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }

  .cta-secondary-row .btn {
    flex: 1;
    padding: 12px 14px !important;
    font-size: 0.9rem !important;
  }

  /* Cards & Layout */
  .container {
    margin: 20px auto 40px !important;
    padding: 0 16px !important;
  }

  .hero-card,
  .policy-card {
    padding: 24px 18px !important;
    border-radius: 18px !important;
  }

  .hero-title {
    font-size: 1.65rem !important;
  }

  .feature-graphic-container {
    padding: 0 16px !important;
    margin: 10px auto 36px !important;
  }

  .feature-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
    padding: 0 16px !important;
    margin-bottom: 40px !important;
  }

  .feature-item {
    padding: 22px 18px !important;
  }

  .download-cta-card {
    padding: 30px 18px !important;
    margin: 0 16px 36px !important;
  }

  .download-cta-card h2 {
    font-size: 1.45rem !important;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 14px 20px !important;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}