:root {
  --color-primary: rgb(31, 31, 32);
  --color-secondary: rgb(51, 4, 221);
  --color-background: #F9FAFB;
  --color-white: #ffffff;
  --color-border: #E5E7EB;
  --color-text-primary: #111827;
  --color-text-secondary: #6B7280;
  --color-accent: rgb(29, 30, 32);
  --color-success: #10B981;
  --color-error: #EF4444;

  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;

  --max-width: 1200px;
  --header-height: 72px;
}

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

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

body {
  font-family: var(--font-family-base);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea {
  font-family: inherit;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section {
  padding: var(--spacing-20) 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.section__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-3);
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-4);
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  transition: box-shadow var(--transition-normal);
}
.site-header .container {
  height: 100%;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-header__brand {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.site-header__brand:hover {
  color: var(--color-secondary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
}

.site-nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: width var(--transition-normal);
}

.site-nav__link:hover {
  color: var(--color-text-primary);
}

.site-nav__link:hover::after {
  width: 100%;
}

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-5);
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.site-nav__cta:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-1px);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-2);
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-4) var(--spacing-6);
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.mobile-nav.active {
  display: flex;
  flex-direction: column;
}

.mobile-nav__link {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  padding: var(--spacing-3) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.mobile-nav__link:last-child {
  border-bottom: none;
}

.mobile-nav__link:hover {
  color: var(--color-secondary);
}

main {
  padding-top: var(--header-height);
}

.hero {
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, var(--color-background) 0%, #EEF2FF 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(51, 4, 221, 0.07) 0%, transparent 65%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: start;
}

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero__product-image-wrapper {
  position: relative;
  width: 100%;
  max-width: 460px;
}

.hero__product-image {
  width: 100%;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  background-color: #E5E7EB;
  min-height: 380px;
  object-fit: cover;
}

.hero__trust-badge {
  position: absolute;
  bottom: -16px;
  left: -16px;
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  background-color: var(--color-white);
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.hero__trust-badge-icon {
  width: 40px;
  height: 40px;
  background-color: rgba(51, 4, 221, 0.08);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-size: 1.125rem;
  flex-shrink: 0;
}

.hero__trust-badge-text strong {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.hero__trust-badge-text span {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.hero__content {
  display: flex;
  flex-direction: column;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(51, 4, 221, 0.08);
  border: 1px solid rgba(51, 4, 221, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-5);
  width: fit-content;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-5);
  letter-spacing: -0.03em;
}

.hero__title span {
  color: var(--color-secondary);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-6);
}

.hero__price {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  margin-bottom: var(--spacing-8);
  flex-wrap: wrap;
}

.hero__price-current {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.hero__price-old {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  text-decoration: line-through;
}

.hero__price-save {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-3);
  background-color: #DCFCE7;
  color: #15803D;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.order-form {
  background-color: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.order-form__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-6);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4);
}

.form-group {
  margin-bottom: var(--spacing-4);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.form-group label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(51, 4, 221, 0.08);
}

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

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

.form-group textarea {
  resize: vertical;
  min-height: 90px;
}

.form-error {
  display: none;
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--spacing-1);
}

.form-error.visible {
  display: block;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-5);
}

.form-checkbox input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--color-secondary);
}

.form-checkbox label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  line-height: var(--line-height-relaxed);
}

.form-checkbox label a {
  color: var(--color-secondary);
  text-decoration: underline;
}

.form-checkbox label a:hover {
  color: var(--color-primary);
}

.btn-submit {
  width: 100%;
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
}

.btn-submit:hover {
  background-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-submit:active {
  transform: translateY(0);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.feature-card {
  padding: var(--spacing-8);
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  background-color: rgba(51, 4, 221, 0.08);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-5);
}

.feature-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.feature-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-12);
  align-items: center;
}

.benefits-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-5);
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
}

.benefit-item__icon {
  width: 44px;
  height: 44px;
  background-color: rgba(51, 4, 221, 0.08);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.benefit-item__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.benefit-item__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.benefits-image {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background-color: #E5E7EB;
}

.benefits-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.product-details__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-16);
  align-items: center;
}

.product-details__image {
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background-color: #E5E7EB;
}

.product-details__image img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.product-details__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-5);
  letter-spacing: -0.02em;
  line-height: var(--line-height-tight);
}

.product-details__text {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-5);
}

.product-details__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.product-details__list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.product-details__list li i {
  color: var(--color-secondary);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.usage-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
}

.usage-step {
  text-align: center;
  padding: var(--spacing-8) var(--spacing-5);
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

.usage-step:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.usage-step__number {
  width: 52px;
  height: 52px;
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin: 0 auto var(--spacing-5);
}

.usage-step__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-3);
}

.usage-step__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.composition-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
}

.composition-card {
  padding: var(--spacing-6);
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.composition-card__icon {
  width: 44px;
  height: 44px;
  background-color: rgba(51, 4, 221, 0.08);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-4);
}

.composition-card__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.composition-card__amount {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-secondary);
  margin-bottom: var(--spacing-2);
}

.composition-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: box-shadow var(--transition-normal);
}

.faq-item:hover {
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-5) var(--spacing-6);
  text-align: left;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
  transition: background-color var(--transition-fast);
}

.faq-question:hover {
  background-color: rgba(51, 4, 221, 0.03);
}

.faq-question__text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  padding-right: var(--spacing-4);
}

.faq-question__icon {
  width: 28px;
  height: 28px;
  background-color: rgba(51, 4, 221, 0.08);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-question__icon {
  transform: rotate(180deg);
}

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

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer__inner {
  padding: 0 var(--spacing-6) var(--spacing-5);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  padding: var(--spacing-20) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -60%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 65%);
  pointer-events: none;
}

.cta-section__inner {
  position: relative;
  z-index: 1;
}

.cta-section__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: rgba(255, 255, 255, 0.65);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-4);
}

.cta-section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-5);
  letter-spacing: -0.02em;
  line-height: var(--line-height-tight);
}

.cta-section__text {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.75);
  max-width: 540px;
  margin: 0 auto var(--spacing-10);
  line-height: var(--line-height-relaxed);
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-10);
  background-color: var(--color-white);
  color: var(--color-secondary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

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

.legal-section {
  background-color: #F3F4F6;
  padding: var(--spacing-12) 0;
}

.legal-section__content {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.legal-section__content p {
  margin-bottom: var(--spacing-3);
}

.legal-section__content strong {
  color: var(--color-text-primary);
}

.disclaimer {
  background-color: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-xl);
  padding: var(--spacing-5) var(--spacing-6);
  margin: var(--spacing-8) 0 0;
}

.disclaimer__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-3);
}

.disclaimer__header i {
  color: #D97706;
  font-size: 1.125rem;
}

.disclaimer__header span {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #92400E;
}

.disclaimer__text {
  font-size: var(--font-size-sm);
  color: #78350F;
  line-height: var(--line-height-relaxed);
}

.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.75);
  padding: var(--spacing-16) 0 var(--spacing-8);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-10);
  margin-bottom: var(--spacing-12);
}

.site-footer__brand {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
  display: block;
  width: fit-content;
  transition: color var(--transition-fast);
}

.site-footer__brand:hover {
  color: rgba(255, 255, 255, 0.8);
}

.site-footer__description {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.55);
  margin-bottom: var(--spacing-6);
}

.site-footer__contact {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.site-footer__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.55);
}

.site-footer__contact-item i {
  flex-shrink: 0;
  margin-top: 2px;
}

.site-footer__contact-item a {
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition-fast);
}

.site-footer__contact-item a:hover {
  color: var(--color-white);
}

.site-footer__heading {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
}

.site-footer__links a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.55);
  transition: color var(--transition-fast);
}

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

.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-4);
}

.site-footer__copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.35);
}

.site-footer__policy-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-5);
  flex-wrap: wrap;
}

.site-footer__policy-links a {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.35);
  transition: color var(--transition-fast);
}

.site-footer__policy-links a:hover {
  color: rgba(255, 255, 255, 0.75);
}

.cookie-banner {
  position: fixed;
  bottom: var(--spacing-6);
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - var(--spacing-12));
  max-width: 980px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  z-index: 2000;
  padding: var(--spacing-5) var(--spacing-6);
  display: none;
}

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

.cookie-banner__content {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  flex-wrap: wrap;
}

.cookie-banner__text {
  flex: 1;
  min-width: 260px;
}

.cookie-banner__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.cookie-banner__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.cookie-banner__description a {
  color: var(--color-secondary);
  text-decoration: underline;
}

.cookie-banner__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  flex-wrap: wrap;
}

.btn-cookie-accept {
  padding: var(--spacing-2) var(--spacing-5);
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: background-color var(--transition-fast);
  white-space: nowrap;
}

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

.btn-cookie-reject {
  padding: var(--spacing-2) var(--spacing-5);
  background-color: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-cookie-reject:hover {
  border-color: var(--color-text-primary);
  color: var(--color-text-primary);
}

.btn-cookie-settings {
  padding: var(--spacing-2) var(--spacing-3);
  background-color: transparent;
  color: var(--color-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  white-space: nowrap;
  text-decoration: underline;
}

.btn-cookie-settings:hover {
  color: var(--color-primary);
}

.cookie-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
  display: none;
}

.cookie-modal-overlay.visible {
  display: flex;
}

.cookie-modal {
  background-color: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8);
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow-xl);
}

.cookie-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
}

.cookie-modal__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.cookie-modal__close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

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

.cookie-category {
  padding: var(--spacing-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.cookie-category:last-of-type {
  border-bottom: none;
  margin-bottom: var(--spacing-5);
}

.cookie-category__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2);
}

.cookie-category__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #D1D5DB;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-normal);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

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

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

.toggle-switch input:disabled + .toggle-slider {
  background-color: var(--color-secondary);
  cursor: not-allowed;
  opacity: 0.7;
}

.cookie-category__text {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

.cookie-modal__actions {
  display: flex;
  gap: var(--spacing-3);
}

.btn-save-cookie {
  flex: 1;
  padding: var(--spacing-3) var(--spacing-5);
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: background-color var(--transition-fast);
  text-align: center;
}

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

.policy-page {
  padding: var(--spacing-16) 0;
  min-height: 70vh;
}

.policy-page__header {
  margin-bottom: var(--spacing-10);
  padding-bottom: var(--spacing-8);
  border-bottom: 1px solid var(--color-border);
}

.policy-page__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-3);
  letter-spacing: -0.02em;
}

.policy-page__updated {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.policy-content h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-top: var(--spacing-8);
  margin-bottom: var(--spacing-4);
}

.policy-content h3 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-top: var(--spacing-5);
  margin-bottom: var(--spacing-3);
}

.policy-content p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-4);
}

.policy-content ul,
.policy-content ol {
  padding-left: var(--spacing-6);
  margin-bottom: var(--spacing-4);
  list-style: disc;
}

.policy-content ol {
  list-style: decimal;
}

.policy-content li {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2);
}

.policy-content a {
  color: var(--color-secondary);
  text-decoration: underline;
}

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

.policy-content strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.thank-you-page {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-16) var(--spacing-6);
}

.thank-you-page__inner {
  max-width: 540px;
}

.thank-you-page__icon {
  width: 88px;
  height: 88px;
  background-color: #DCFCE7;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-8);
  color: #15803D;
  font-size: 2.5rem;
}

.thank-you-page__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
  letter-spacing: -0.02em;
}

.thank-you-page__text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-10);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-8);
  background-color: var(--color-secondary);
  color: var(--color-white);
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

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

.error-page {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-16) var(--spacing-6);
}

.error-page__inner {
  max-width: 520px;
}

.error-page__code {
  font-size: 7rem;
  font-weight: var(--font-weight-bold);
  line-height: 1;
  margin-bottom: var(--spacing-4);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.error-page__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-4);
}

.error-page__text {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-10);
}

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    order: -1;
  }

  .hero__product-image-wrapper {
    max-width: 360px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .benefits-image {
    order: -1;
  }

  .product-details__grid {
    grid-template-columns: 1fr;
  }

  .usage-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .composition-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 815px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
  }

  .site-nav {
    display: none;
  }

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

  .hero {
    padding: var(--spacing-12) 0;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .usage-steps {
    grid-template-columns: 1fr;
  }

  .composition-grid {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .cookie-banner {
    bottom: 0;
    left: 0;
    right: 0;
    transform: none;
    width: 100%;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
  }

  .cookie-banner__content {
    flex-direction: column;
    align-items: stretch;
  }

  .cookie-banner__actions {
    flex-direction: column;
  }

  .btn-cookie-accept,
  .btn-cookie-reject,
  .btn-cookie-settings {
    text-align: center;
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-4);
  }

  .section {
    padding: var(--spacing-12) 0;
  }

  .order-form {
    padding: var(--spacing-5);
  }

  .hero__trust-badge {
    bottom: -10px;
    left: -10px;
  }

  .cta-section__title {
    font-size: var(--font-size-3xl);
  }

  .policy-page__title {
    font-size: var(--font-size-3xl);
  }
}