:root {
  --color-bg: #0d1419;
  --color-bg-alt: #151d26;
  --color-bg-card: #1a232e;
  --color-primary: #2d8b7a;
  --color-primary-hover: #3aa892;
  --color-accent: #c9a227;
  --color-accent-muted: #a6851f;
  --color-text: #e8ecf0;
  --color-text-muted: #9ca8b5;
  --color-border: #2a3542;
  --color-error: #c75c5c;
  --color-success: #4a9d7a;
  --color-btn-text: #0d1419;
  --color-btn-text-hover: #ffffff;
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-display: 'Georgia', 'Times New Roman', serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.25);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.35);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.4);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

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

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

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

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xs) var(--space-md);
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header__brand {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
}

.header__nav {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.header__nav-link {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

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

.header__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: var(--space-sm);
  font-size: 1.25rem;
}

@media (max-width: 1000px) {
  .header__nav {
    position: fixed;
    top: 44px;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-normal), opacity var(--transition-normal), visibility var(--transition-normal);
    border-bottom: 1px solid var(--color-border);
  }

  .header__nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header__toggle {
    display: block;
  }
}

.main {
  flex: 1;
}

.hero {
  padding: var(--space-2xl) var(--space-lg);
  background: linear-gradient(165deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--space-2xl);
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.hero__media {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.hero__image-wrap {
  position: relative;
}

.hero__badge {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 0.75rem;
  font-weight: 600;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.hero__rating {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-accent);
  font-size: 0.9rem;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--color-text);
  line-height: 1.2;
}

.hero__desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.hero__prices {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
}

.hero__price {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

.hero__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 360px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

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

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-error);
}

.form-group .error-msg {
  font-size: 0.8rem;
  color: var(--color-error);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.form-checkbox input {
  margin-top: 0.2rem;
  width: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-btn-text);
}

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

.btn--accent {
  background: var(--color-accent);
  color: var(--color-btn-text);
}

.btn--accent:hover {
  background: var(--color-accent-muted);
  color: var(--color-btn-text-hover);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-btn-text-hover);
}

.section {
  padding: var(--space-3xl) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  margin-bottom: var(--space-xl);
  color: var(--color-text);
  text-align: center;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--card {
  background: var(--color-bg-card);
}

#features .feature-card:nth-child(1) { border-left: 4px solid var(--color-primary); }
#features .feature-card:nth-child(2) { border-left: 4px solid var(--color-accent); }
#features .feature-card:nth-child(3) { border-left: 4px solid var(--color-success); }

#benefits .benefits-list li:nth-child(odd) { background: var(--color-bg-card); }
#benefits .benefits-list li:nth-child(even) { background: var(--color-bg); }

#about .about-content { border-left: 4px solid var(--color-primary); padding-left: var(--space-xl); }

#usage .usage-steps li:nth-child(1) { border-left: 3px solid var(--color-primary); }
#usage .usage-steps li:nth-child(2) { border-left: 3px solid var(--color-accent); }
#usage .usage-steps li:nth-child(3) { border-left: 3px solid var(--color-success); }
#usage .usage-steps li:nth-child(4) { border-left: 3px solid var(--color-primary); }

#ingredients .ingredients-list li:nth-child(odd) { background: var(--color-bg-card); }
#ingredients .ingredients-list li:nth-child(even) { background: var(--color-bg-alt); }

#reviews .testimonial-card:nth-child(1) { box-shadow: var(--shadow-md); }
#reviews .testimonial-card:nth-child(2) { border-color: var(--color-primary); }
#reviews .testimonial-card:nth-child(3) { border-color: var(--color-accent); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-bg);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.feature-card__title {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.feature-card__text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.benefits-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--space-lg);
}

.benefits-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
  transition: border-left-color var(--transition-fast);
}

.benefits-list li:hover {
  border-left-color: var(--color-primary);
}

.benefits-list .benefit-num {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 1.25rem;
  min-width: 2rem;
}

.about-content {
  max-width: 720px;
  margin: 0 auto;
}

.about-content p {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
}

.usage-steps {
  list-style: none;
  counter-reset: step;
}

.usage-steps li {
  counter-increment: step;
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding-left: calc(var(--space-xl) + 2rem);
  position: relative;
}

.usage-steps li::before {
  content: counter(step);
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 2rem;
  height: 2rem;
  background: var(--color-primary);
  color: var(--color-bg);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.ingredients-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--space-md);
}

.ingredients-list li {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--color-bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-fast);
}

.testimonial-card:hover {
  border-color: var(--color-primary);
}

.testimonial-card__quote {
  font-style: italic;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.testimonial-card__author {
  font-weight: 600;
  color: var(--color-accent);
  font-size: 0.9rem;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item__question {
  width: 100%;
  padding: var(--space-lg);
  background: none;
  border: none;
  color: var(--color-text);
  font-family: inherit;
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-fast);
}

.faq-item__question:hover {
  background: var(--color-bg-alt);
}

.faq-item__answer {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.95rem;
  display: none;
}

.faq-item.is-open .faq-item__answer {
  display: block;
}

.cta-block {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.cta-block__title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  margin-bottom: var(--space-lg);
  color: var(--color-text);
}

.cta-block .btn {
  margin-top: var(--space-md);
}

.disclaimer {
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  max-width: 1200px;
  margin: 0 auto;
}

.disclaimer p {
  margin-bottom: var(--space-sm);
}

.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--space-lg);
}

.footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: var(--space-2xl);
}

.footer__brand {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

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

.footer__links {
  list-style: none;
}

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

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

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

.footer__copyright {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
  display: none;
}

.cookie-banner.is-visible {
  display: block;
}

.cookie-banner__text {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  max-width: 800px;
}

.cookie-banner__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.cookie-settings {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: none;
}

.cookie-settings.is-open {
  display: block;
}

.cookie-settings__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.cookie-settings__item:last-child {
  border-bottom: none;
}

.cookie-settings .btn {
  margin-top: var(--space-md);
}

.cookie-settings__label {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.toggle-switch {
  width: 48px;
  height: 26px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.toggle-switch.is-on {
  background: var(--color-primary);
}

.toggle-switch::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  top: 3px;
  left: 3px;
  transition: transform var(--transition-fast);
}

.toggle-switch.is-on::after {
  transform: translateX(22px);
}

.legal-page {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 800px;
  margin: 0 auto;
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: var(--space-xl);
  color: var(--color-text);
}

.legal-page h2 {
  font-size: 1.2rem;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--color-text);
}

.legal-page p, .legal-page li {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.legal-page ul {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal-page .home-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  color: var(--color-primary);
}

.legal-page .home-link:hover {
  color: var(--color-primary-hover);
}

.thank-you-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
}

.thank-you-page__title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.thank-you-page__text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.thank-you-page .btn {
  margin: var(--space-md);
}

.contact-block {
  margin-top: var(--space-2xl);
  padding: var(--space-xl);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.contact-block__title {
  font-size: 1rem;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}