:root {
  --bg-primary: #0a0d14;
  --bg-secondary: #111726;
  --bg-card: rgba(22, 30, 49, 0.7);
  --bg-card-hover: rgba(30, 42, 69, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(56, 189, 248, 0.3);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --accent-cyan: #38bdf8;
  --accent-blue: #3b82f6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-amber: #f59e0b;
  --accent-purple: #a855f7;
  
  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  --gradient-glow: radial-gradient(circle at 50% -20%, rgba(56, 189, 248, 0.18), transparent 70%);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-subtle);
  --shadow-glow: 0 0 50px -10px rgba(56, 189, 248, 0.25);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(56, 189, 248, 0.15), transparent 70%),
    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(168, 85, 247, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 40%, rgba(239, 68, 68, 0.06), transparent 60%);
  background-attachment: fixed;
  background-repeat: no-repeat;
}

/* Container */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

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

a:hover {
  color: #7dd3fc;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10, 13, 20, 0.75);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  object-fit: cover;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #04101e;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(56, 189, 248, 0.45);
  color: #020813;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-2px);
  color: #fff;
}

.btn-sm {
  padding: 7px 14px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  animation: fadeIn 0.8s ease-out;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}

.hero-gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* App Showcase Frame */
.showcase-wrapper {
  position: relative;
  max-width: 780px;
  margin: 0 auto;
}

.showcase-glow {
  position: absolute;
  top: 10%;
  left: 5%;
  right: 5%;
  bottom: 5%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, rgba(168, 85, 247, 0.15) 50%, transparent 80%);
  filter: blur(60px);
  z-index: -1;
  pointer-events: none;
}

.mac-window {
  background: #181c26;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 30px 80px -15px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(255, 255, 255, 0.08);
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.mac-window:hover {
  transform: translateY(-4px);
}

.mac-titlebar {
  display: flex;
  align-items: center;
  height: 42px;
  padding: 0 16px;
  background: rgba(22, 27, 38, 0.9);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mac-controls {
  display: flex;
  gap: 8px;
}

.mac-btn {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.mac-btn.close { background-color: #ff5f56; }
.mac-btn.min { background-color: #ffbd2e; }
.mac-btn.max { background-color: #27c93f; }

.mac-title {
  margin: 0 auto;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  padding-right: 48px;
}

.showcase-img {
  width: 100%;
  height: auto;
  display: block;
}

/* Sections Common */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 54px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 16px;
}

.section-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* Comparison Section (Problem vs Solution) */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 30px;
}

.comparison-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  position: relative;
  border: 1px solid;
}

.comparison-card.danger {
  background: rgba(239, 68, 68, 0.04);
  border-color: rgba(239, 68, 68, 0.22);
}

.comparison-card.success {
  background: rgba(16, 185, 129, 0.05);
  border-color: rgba(16, 185, 129, 0.28);
  box-shadow: 0 10px 40px -10px rgba(16, 185, 129, 0.15);
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.danger .card-badge {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
}

.success .card-badge {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
}

.card-title {
  font-size: 1.35rem;
  margin-bottom: 14px;
}

.comparison-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 20px;
}

.comparison-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.98rem;
  color: var(--text-secondary);
}

.comparison-list .icon {
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 3px;
}

/* Interactive Demo Widget */
.demo-box {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  margin-top: 50px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.demo-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.demo-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.toggle-switch-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.switch-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.custom-toggle {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
}

.custom-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: #334155;
  transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 34px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background-color: var(--accent-green);
}

input:checked + .toggle-slider:before {
  transform: translateX(24px);
}

.demo-simulation {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.sim-item {
  background: rgba(10, 13, 20, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: all 0.3s ease;
}

.sim-app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.sim-app-name {
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sim-verdict-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
}

.sim-verdict-badge.allow {
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.sim-verdict-badge.block {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.sim-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.feature-title {
  font-size: 1.2rem;
}

.feature-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* How It Works Steps */
.steps-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-cyan);
  opacity: 0.35;
  margin-bottom: 12px;
}

.step-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.step-text {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* Download CTA Section */
.download-section {
  padding: 100px 0;
  position: relative;
}

.download-box {
  background: linear-gradient(135deg, rgba(30, 41, 67, 0.8) 0%, rgba(17, 24, 39, 0.9) 100%);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 24px;
  padding: 56px 40px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 60px rgba(56, 189, 248, 0.15);
  position: relative;
  overflow: hidden;
}

.download-box::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.download-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 16px;
}

.download-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 620px;
  margin: 0 auto 36px;
}

.download-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.download-notes {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

/* FAQ Accordion */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
  color: var(--accent-cyan);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.65;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 50px 0 30px;
  background: #07090f;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 30px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: 20px;
  list-style: none;
}

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

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

.footer-bottom {
  text-align: center;
  font-size: 0.82rem;
}

/* Responsive */
@media (max-width: 868px) {
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  .steps-wrapper {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .section {
    padding: 60px 0;
  }
}