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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main {
  flex: 1;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
}

:root {
  --color-primary: #2c5530;
  --color-primary-dark: #1f3d23;
  --color-secondary: #4a6572;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-background: #ffffff;
  --color-background-alt: #f8f9fa;
  --color-border: #e0e0e0;
  --color-hover: #f5f5f5;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition: all 0.3s ease;
  --container-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
}

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

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

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

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

.section__title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  position: relative;
  padding-bottom: var(--spacing-sm);
}

.section--primary .section__title {
  color: white;
}

.header {
  background-color: var(--color-background);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header__container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  min-height: 80px;
}

.header__logo {
  display: flex;
  align-items: center;
}

.logo__image {
  height: 50px;
  width: auto;
  transition: transform 0.3s ease;
}

.logo__image:hover {
  transform: scale(1.05);
}

.header__menu-toggle {
  display: none;
}

.header__menu-button {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.header__menu-icon {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text);
  transition: var(--transition);
  position: relative;
}

.header__menu-toggle:checked ~ .header__menu-button .header__menu-icon {
  background-color: transparent;
}

.header__menu-toggle:checked ~ .header__menu-button {
  transform: rotate(45deg);
}

.header__navigation {
  display: flex;
}

.navigation__list {
  display: flex;
  gap: var(--spacing-lg);
  margin: 0;
  padding: 0;
}

.navigation__link {
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  position: relative;
  color: var(--color-text);
}

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

.navigation__link--current {
  color: var(--color-primary);
}

.navigation__link:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.navigation__link:active {
  color: var(--color-primary-dark);
}

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: var(--spacing-xxl) 0;
}

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

.hero__title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero__text {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.9;
}

.hero__image {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s ease;
}

.hero__image:hover {
  transform: translateY(-5px);
}

.features__list {
  display: grid;
  gap: var(--spacing-lg);
}

.feature {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--color-background);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--color-border);
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.feature__icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.feature__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.feature__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
}

.feature__text {
  color: var(--color-text-light);
  margin: 0;
  line-height: 1.7;
}

.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.product {
  background: var(--color-background);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  position: relative;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.product:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.product__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.product:hover .product__image {
  transform: scale(1.05);
}

.product__content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.product__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.product__price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0;
}

.products__button {
  margin-top: var(--spacing-lg);
}

.join__content {
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
}

.join__text {
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.about__content {
  max-width: 800px;
}

.about__text {
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text-light);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

.button--primary {
  background-color: var(--color-primary);
  color: white;
}

.button--primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button--primary:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(44, 85, 48, 0.3);
}

.button--primary:active {
  transform: translateY(0);
}

.button--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.button--secondary:hover {
  background-color: var(--color-primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.button--product {
  background-color: var(--color-background-alt);
  color: var(--color-primary);
  width: 100%;
  margin-top: auto;
}

.button--product:hover {
  background-color: var(--color-primary);
  color: white;
}

.button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.hero__button {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  margin-top: auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.footer__column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__column--wide {
  grid-column: span 1;
}

.footer__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  position: relative;
  padding-bottom: var(--spacing-xs);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__item {
  margin: 0;
}

.footer__link {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

.footer__link:hover {
  color: white;
  text-decoration: underline;
}

.footer__text {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-sm);
}

.footer__form {
  display: flex;
  gap: var(--spacing-xs);
}

.footer__input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1rem;
  transition: var(--transition);
}

.footer__input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.footer__input:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(240, 165, 0, 0.2);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.footer__social-link:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.footer__social-icon {
  width: 20px;
  height: 20px;
  filter: brightness(0) invert(1);
}

.footer__copyright {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  margin: 0;
}

/* Оверлей для меню */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

.nav-overlay.active {
  display: block;
}

/* Кнопка "Наверх" */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--color-primary-dark);
  transform: scale(1.1);
}

.scroll-top:active {
  transform: scale(0.95);
}

/* Для мобильных устройств */
@media (max-width: 768px) {
  .scroll-top {
    width: 52px;
    height: 52px;
    bottom: 20px;
    right: 20px;
    font-size: 22px;
  }
  
  /* Фиксация меню для мобильных */
  .header {
    position: sticky;
  }
}

@media (max-width: 1199px) {
  .hero__title {
    font-size: 3rem;
  }
  .section__title {
    font-size: 2.25rem;
  }
}

@media (max-width: 991px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-lg);
  }
  .hero__image {
    max-width: 500px;
    margin: 0 auto;
  }
  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer__column--wide {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .header__menu-button {
    display: flex;
  }
  .navigation__list {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--color-background);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--spacing-xxl) var(--spacing-lg);
    gap: var(--spacing-md);
    transition: right 0.3s ease;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
  }
  .header__menu-toggle:checked ~ .header__navigation .navigation__list {
    right: 0;
  }
  .navigation__link {
    font-size: 1.125rem;
    padding: var(--spacing-sm) 0;
  }
  .feature {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .feature__icon {
    margin: 0 auto;
  }
  .section {
    padding: var(--spacing-xl) 0;
  }
  .hero__title {
    font-size: 2.25rem;
  }
  .section__title {
    font-size: 1.75rem;
  }
  .products__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* Увеличение размера шрифта для мобильных (HIG рекомендация) */
  html {
    font-size: 17px;
  }
}

@media (max-width: 575px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
  .footer__column--wide {
    grid-column: span 1;
  }
  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  .products__grid {
    grid-template-columns: 1fr;
  }
  .hero__title {
    font-size: 2rem;
  }
  .section__title {
    font-size: 1.5rem;
  }
}

@media (max-width: 399px) {
  .navigation__list {
    width: 100%;
    right: -100%;
  }
  .header__menu-toggle:checked ~ .header__navigation .navigation__list {
    right: 0;
  }
  .hero__title {
    font-size: 1.75rem;
  }
  .section__title {
    font-size: 1.375rem;
  }
  .hero__button {
    padding: 0.75rem 1.5rem;
    font-size: 1.125rem;
  }
  .feature__icon {
    width: 48px;
    height: 48px;
  }
  .product__image {
    height: 180px;
  }
}