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

:root {
  --primary: #ff2e2e;
  --primary-dark: #e60000;
  --primary-light: #ff6b6b;
  --secondary: #f59e0b;
  --accent: #ff2e2e;

  --bg-primary: #1a0a0a;
  --bg-secondary: #2a1515;
  --bg-tertiary: #3a1a1a;
  --bg-card: #2d1818;
  --bg-glass: rgba(255, 46, 46, 0.1);

  --text-primary: #ffffff;
  --text-secondary: #ffcccc;
  --text-muted: #cc9999;

  --border-primary: rgba(255, 46, 46, 0.3);
  --border-secondary: rgba(255, 46, 46, 0.1);

  --shadow-sm: 0 1px 2px 0 rgba(255, 46, 46, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(255, 46, 46, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(255, 46, 46, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(255, 46, 46, 0.4);
  --shadow-glow: 0 0 30px rgba(255, 46, 46, 0.6);

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", monospace;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap");

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-primary);
  border-radius: 50px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-light);
  margin-bottom: var(--space-lg);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--space-lg);
  background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.btn-outline:hover {
  background: var(--bg-glass);
  border-color: var(--primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}

.btn-large {
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
}

.header {
  position: fixed;
  top: 0;
  width: 100%;
  padding: var(--space-lg) 0;
  background: rgba(26, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-primary);
  z-index: 1000;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  display: none;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-xl);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-normal);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(255, 46, 46, 0.3) 0%, rgba(255, 46, 46, 0.1) 50%, transparent 70%);
  z-index: -1;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-glass);
  border: 1px solid var(--border-primary);
  border-radius: 50px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-3xl);
}

.hero-stats {
  display: flex;
  gap: var(--space-xl);
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

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

.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 400px;
  width: 100%;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-secondary);
}

.card-controls {
  display: flex;
  gap: var(--space-sm);
}

.control {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.control.red {
  background: #ef4444;
}
.control.yellow {
  background: #f59e0b;
}
.control.green {
  background: #10b981;
}

.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.card-content {
  padding: var(--space-lg);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.code-line {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.line-number {
  color: var(--text-muted);
  user-select: none;
  min-width: 20px;
}

.code-text {
  color: var(--primary-light);
}

.features {
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  padding: var(--space-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(255, 46, 46, 0.4);
  border-color: var(--primary);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: white;
  margin-bottom: var(--space-lg);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.download {
  background: var(--bg-primary);
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 16px;
  padding: var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 46, 46, 0.25) 0%, rgba(255, 46, 46, 0.1) 50%, transparent 70%);
  z-index: 0;
}

.download-content {
  position: relative;
  z-index: 1;
}

.download-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: var(--space-lg);
  background: linear-gradient(180deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.download-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.download-platforms {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
}

.platform-btn {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-glass);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all var(--transition-normal);
  min-width: 150px;
}

.platform-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.platform-btn i {
  font-size: 1.5rem;
  color: var(--primary-light);
}

.platform-info {
  text-align: left;
}

.platform-name {
  font-weight: 600;
  font-size: 1rem;
}

.platform-version {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.download-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
}

.faq {
  background: var(--bg-secondary);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
}

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  padding: var(--space-xl);
  transition: all var(--transition-normal);
}

.faq-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.faq-question {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.faq-answer {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer {
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-secondary);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.footer-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.footer-social {
  display: none;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--text-primary);
}

.footer-list {
  list-style: none;
}

.footer-list li {
  margin-bottom: var(--space-sm);
}

.footer-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-list a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-secondary);
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-legal {
  display: flex;
  gap: var(--space-lg);
}

.footer-legal a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--primary-light);
}

.dmca-notice {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: 12px;
  padding: var(--space-lg);
  max-width: 320px;
  box-shadow: var(--shadow-xl);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 2000;
}

.dmca-notice.show {
  transform: translateY(0);
  opacity: 1;
}

.dmca-close {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: rgba(255, 46, 46, 0.1);
  border: 1px solid var(--border-primary);
  color: var(--primary-light);
  cursor: pointer;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all var(--transition-fast);
  font-size: 0.75rem;
}

.dmca-close:hover {
  background: var(--primary);
  color: white;
}

.dmca-content {
  padding-right: var(--space-lg);
}

.dmca-title {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  color: var(--primary-light);
  font-family: var(--font-sans);
}

.dmca-text {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.5;
  font-family: var(--font-sans);
}

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-xl);
  }

  .hero-visual {
    order: -1;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .download-platforms {
    flex-direction: column;
    align-items: center;
  }

  .platform-btn {
    width: 100%;
    max-width: 300px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer-legal {
    flex-direction: column;
    gap: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .download-title {
    font-size: 2rem;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-actions .btn {
    width: auto;
    min-width: 200px;
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
  box-shadow: 0 0 10px rgba(255, 46, 46, 0.5);
}