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

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #141414;
  --bg-card-hover: #1a1a1a;
  --accent: #8b1a1a;
  --accent-light: #b22222;
  --accent-glow: rgba(139, 26, 26, 0.35);
  --text-primary: #e8e8e8;
  --text-secondary: #999999;
  --text-muted: #666666;
  --border-color: #1f1f1f;
  --border-accent: #2a1010;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition-fast: 0.2s ease;
  --transition-mid: 0.35s ease;
  --transition-slow: 0.6s ease;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: default;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

::selection {
  background-color: var(--accent);
  color: #fff;
}

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

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-light);
}

html {
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg-primary);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.7;
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 24px;
  transition: background-color var(--transition-mid), box-shadow var(--transition-mid);
}

.navbar.scrolled {
  background-color: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border-color);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.5px;
  position: relative;
  padding: 4px 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--accent-light);
  transition: width var(--transition-mid);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.4;
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 740px;
  z-index: 1;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 6vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  color: var(--text-primary);
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.15s forwards;
  opacity: 0;
}

.hero-title .accent {
  background: linear-gradient(135deg, var(--accent-light), #d44);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease 0.3s forwards;
  opacity: 0;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  animation: fadeInUp 0.8s ease 0.45s forwards;
  opacity: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-mid);
  letter-spacing: 0.3px;
}

.btn-primary {
  background-color: var(--accent);
  color: #fff;
  box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
  background-color: var(--accent-light);
  box-shadow: 0 8px 32px rgba(139, 26, 26, 0.5);
  transform: translateY(-2px);
}

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

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.btn-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  fill: currentColor;
  position: relative;
  top: -1px;
}

.products {
  padding: 100px 24px 120px;
  position: relative;
}

.products-header {
  text-align: center;
  margin-bottom: 64px;
}

.products-header .section-desc {
  margin-left: auto;
  margin-right: auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.product-card {
  position: relative;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 36px 28px 32px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-mid);
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition-mid);
}

.product-card:hover {
  border-color: var(--border-accent);
  background-color: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border-accent);
}

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

.product-card.featured {
  border-color: var(--border-accent);
  background: linear-gradient(180deg, rgba(139, 26, 26, 0.06) 0%, var(--bg-card) 100%);
}

.product-card.featured::before {
  opacity: 0.6;
}

.product-card.featured:hover::before {
  opacity: 1;
}

.card-tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-light);
  margin-bottom: 16px;
}

.card-tier-badge .tier-icon {
  font-size: 1rem;
  line-height: 1;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.card-price-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}

.card-price {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-primary);
}

.card-price-note {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.card-discount {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #4ade80;
  background-color: rgba(74, 222, 128, 0.08);
  border: 1px solid rgba(74, 222, 128, 0.15);
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 20px;
}

.card-access {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent-light);
  background-color: rgba(139, 26, 26, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: 100px;
  padding: 4px 12px;
  margin-bottom: 20px;
}

.card-divider {
  width: 100%;
  height: 1px;
  background-color: var(--border-color);
  margin: 4px 0 20px;
}

.card-section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
  margin-top: 16px;
}

.card-section-label:first-of-type {
  margin-top: 0;
}

.card-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 4px;
}

.card-feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-feature-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 2px;
  color: var(--accent-light);
}

.card-cta {
  margin-top: auto;
  padding-top: 28px;
}

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

.about-strip {
  padding: 100px 24px;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.about-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}

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

.stat-item {
  text-align: center;
  padding: 28px 12px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-mid), transform var(--transition-mid);
}

.stat-item:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent-light);
  margin-bottom: 6px;
}

.stat-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 60px 24px 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .nav-logo {
  margin-bottom: 14px;
  display: inline-block;
}

.footer-brand-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 300px;
}

.footer-col-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
  padding-left: 4px;
}

.footer-signature {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--border-color);
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.footer-signature a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-signature a:hover {
  color: var(--accent-light);
}

.footer-signature svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
  color: var(--text-muted);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--bg-secondary);
    flex-direction: column;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    border-left: 1px solid var(--border-color);
    transition: right var(--transition-mid);
    z-index: 999;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .products-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .hero {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .hero-title {
    font-size: clamp(1.8rem, 8vw, 2.6rem);
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .products {
    padding: 60px 20px 80px;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .stat-item {
    padding: 20px 8px;
  }

  .stat-number {
    font-size: 1.2rem;
  }

  .about-strip {
    padding: 60px 20px;
  }
}

@media (max-width: 480px) {
  .product-card {
    padding: 28px 20px 24px;
  }

  .card-price {
    font-size: 1.6rem;
  }
}

.error-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.error-section::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.4;
  pointer-events: none;
}

.error-content {
  position: relative;
  text-align: center;
  max-width: 600px;
  z-index: 1;
}

.error-code {
  font-family: var(--font-heading);
  font-size: clamp(6rem, 18vw, 10rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -4px;
  background: linear-gradient(135deg, var(--accent-light), #d44);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease 0.15s forwards;
  opacity: 0;
}

.error-title {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease 0.3s forwards;
  opacity: 0;
}

.error-desc {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  animation: fadeInUp 0.8s ease 0.45s forwards;
  opacity: 0;
}

.error-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  animation: fadeInUp 0.8s ease 0.6s forwards;
  opacity: 0;
}

.error-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  margin: 0 auto 24px;
  animation: fadeInUp 0.8s ease 0.25s forwards;
  opacity: 0;
}

@media (max-width: 768px) {
  .error-section {
    padding: 100px 20px 60px;
    min-height: auto;
  }

  .error-actions {
    flex-direction: column;
    gap: 12px;
  }

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