:root {
  --color-primary: #101214;
  --color-secondary: #C0C4CC;
  --color-accent: #00E5FF;
  --color-background: #F1F4F9;
  --font-main: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 0;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --spacing: 1.5rem;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-main);
  background: var(--color-background);
  color: var(--color-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

main {
  flex: 1;
}

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

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(241, 244, 249, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(192, 196, 204, 0.3);
  padding: 15px;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.brand-link img {
  width: 40px;
  height: 40px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-desktop a {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  position: relative;
}

.nav-desktop a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

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

.burger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-secondary);
  cursor: pointer;
  padding: 10px;
  transition: var(--transition);
}

.burger-btn span {
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

.burger-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.burger-btn[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.burger-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .burger-btn {
    display: flex;
  }

  .nav-desktop {
    display: none;
  }
}

.burger-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(16, 18, 20, 0.6);
  z-index: 1001;
  opacity: 0;
  transition: opacity var(--transition);
}

.burger-overlay.active {
  display: block;
  opacity: 1;
}

.burger-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(100%, 1023px);
  height: 100vh;
  background: var(--color-background);
  z-index: 1002;
  padding: 5rem 2rem 2rem;
  box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
  transition: right var(--transition);
  overflow-y: auto;
}

.burger-menu.active {
  right: 0;
}

.burger-menu nav {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.burger-menu a {
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(192, 196, 204, 0.3);
}

.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-primary);
}

.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../image/product.webp') center/cover no-repeat;
  opacity: 0.15;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-text {
  background: rgba(241, 244, 249, 0.9);
  padding: 2.5rem;
  border: 1px solid rgba(192, 196, 204, 0.4);
}

.hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.hero-rating {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.hero-description {
  color: var(--color-secondary);
  margin-bottom: 1.5rem;
  font-size: 1rem;
}

.hero-price {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.price-current {
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-accent);
  font-family: var(--font-mono);
}

.price-old {
  font-size: 1rem;
  color: var(--color-secondary);
  text-decoration: line-through;
}

.hero-order {
  background: rgba(241, 244, 249, 0.95);
  padding: 2.5rem;
  border: 1px solid rgba(192, 196, 204, 0.4);
}

.hero-order .product-image-wrapper {
  text-align: center;
  margin-bottom: 1.5rem;
}

.hero-order .product-image-wrapper img {
  width: 200px;
  height: 200px;
  object-fit: contain;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-secondary);
  background: #fff;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

.gdpr-check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.gdpr-check input {
  width: auto;
  margin-top: 0.25rem;
}

.gdpr-check label {
  font-size: 0.8rem;
  color: var(--color-secondary);
}

.btn-cta {
  display: inline-block;
  width: 100%;
  padding: 1rem 2rem;
  background: var(--color-primary);
  color: var(--color-accent);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 229, 255, 0.2), transparent);
  animation: scan 4s infinite;
}

@keyframes scan {
  0%, 100% { left: -100%; }
  50% { left: 100%; }
}

.btn-cta:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.frosted-card {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(192, 196, 204, 0.5);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
}

.frosted-card:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.15);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.benefit-item {
  padding: 1.5rem 1rem;
}

.benefit-item h3 {
  font-size: 1rem;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.benefit-item p {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}

.ingredient-card {
  padding: 1.5rem;
  text-align: center;
}

.ingredient-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.ingredient-card p {
  font-size: 0.85rem;
  color: var(--color-secondary);
}

.manufacturing-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.manufacturing-content p {
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.protocol-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.protocol-step {
  padding: 1.5rem;
  border-left: 3px solid var(--color-accent);
}

.protocol-step h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.protocol-step p {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.review-card {
  padding: 1.5rem;
}

.review-card .stars {
  color: #f5a623;
  margin-bottom: 0.5rem;
}

.review-card p {
  font-size: 0.95rem;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.review-card .author {
  font-size: 0.85rem;
  color: var(--color-secondary);
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(192, 196, 204, 0.4);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 0;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: color var(--transition);
}

.faq-question:hover {
  color: var(--color-accent);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  flex-shrink: 0;
  transition: transform var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition);
}

.faq-answer-inner {
  padding-bottom: 1.25rem;
  color: var(--color-secondary);
  font-size: 0.95rem;
}

.contact-section {
  text-align: center;
}

.contact-content {
  max-width: 500px;
  margin: 0 auto;
}

.contact-content p {
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

.contact-email {
  display: inline-block;
  padding: 1rem 2rem;
  background: var(--color-primary);
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  transition: var(--transition);
}

.contact-email:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.address-block {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.legal-disclaimer {
  background: rgba(192, 196, 204, 0.2);
  padding: 1.5rem 2rem;
  margin: 3rem 2rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.85rem;
  color: var(--color-secondary);
  text-align: center;
}

.site-footer {
  margin-top: auto;
  background: var(--color-primary);
  color: var(--color-secondary);
  padding: 2.5rem 2rem;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

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

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

.copyright {
  font-size: 0.85rem;
  opacity: 0.8;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-primary);
  color: var(--color-secondary);
  padding: 1.5rem 2rem;
  z-index: 9999;
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.2);
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-banner p {
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.cookie-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cookie-buttons button {
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-secondary);
  background: transparent;
  color: var(--color-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
}

.cookie-buttons button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.cookie-buttons .accept-all {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
}

.cookie-settings {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(192, 196, 204, 0.2);
}

.cookie-settings h4 {
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.cookie-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0;
  font-size: 0.9rem;
}

.legal-page {
  padding: 5rem 2rem 3rem;
  max-width: 800px;
  margin: 0 auto;
}

.legal-page h1 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.legal-page h2 {
  font-size: 1.35rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal-page p,
.legal-page ul {
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

.legal-page ul {
  padding-left: 2rem;
}

.stack-card {
  transform-style: preserve-3d;
  transition: transform var(--transition);
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
  }

  .hero-order {
    order: -1;
  }

  .manufacturing-content {
    grid-template-columns: 1fr;
  }
}