:root {
  --green: #4ED094;
  --dark-green: #062818;
  --light-green-bg: #F5FFF8;
  --gray-bg: #F5F5F5;
  --text-dark: #333333;
  --text-light: #666666;
  --white: #FFFFFF;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: 'Inter', sans-serif;
  color: var(--text-dark);
  overflow-x: hidden;
  background-color: #F5F5F5;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
}

/* Header */
.navbar-brand {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  font-size: 2rem;
}
.navbar-brand .green { color: var(--green); }
.navbar-nav .nav-link {
  font-weight: 500;
  font-size: 1rem;
  color: var(--text-dark) !important;
}
.btn-buy {
  background: linear-gradient(150deg, var(--green), var(--dark-green));
  border: none;
  border-radius: 50px;
  font-weight: 400;
  font-size: 1rem;
  padding: 0.75rem 2rem;
  color: var(--white);
  transition: all 0.3s ease;
  width: 150px;
}
.btn-buy:hover, .btn-nav:hover {
  filter: brightness(90%);
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  color: var(--white);
}
.logo {
  width: 150px;
}
.btn-nav {
  background: linear-gradient(150deg, var(--green), var(--dark-green));
  border: none;
  border-radius: 50px;
  font-weight: 400;
  font-size: 1rem;
  padding: 0.75rem 0.75rem;
  color: var(--white);
  transition: all 0.3s ease;
  width: 120px;
}

/* Hero Section */
.hero-bg {
  background-color: #D0D5D2;
}
.hero {
  background-color: #D0D5D2;
  background-image: url('../images/hero11.jpg');
  background-size: 60%;
  background-position: left center;
  background-repeat: no-repeat;
}
.hero-text {
  height: 700px;
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.18); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 3rem;    
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
}

/* Кнопка */
.btn-buy-hero {
  background: linear-gradient(150deg, var(--green), var(--dark-green));
  border: none;
  border-radius: 50px;
  font-weight: 400;
  font-size: 1rem;
  padding: 1rem 4rem;
  color: white;
  display: inline-block;
  text-decoration: none;
  transition: all 0.3s ease;
}
.btn-buy-hero:hover {
  filter: brightness(90%);
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  color: var(--white);
}
.hero-title{
  color: #0F6F4D;
  font-size: 3.2rem;
}
.hero-content-card p{
  font-size: 0.8rem;
}

.b2-card-bg1, 
.b6-card-bg1,
.b8-card-bg1 {
  background-image: url('../images/dark\ cube.png');
  background-repeat: no-repeat;
  background-position: top left;
  padding: 0;
}
.b2-card-bg2,
.b6-card-bg2,
.b8-card-bg2 {
  background-image: url('../images/light\ cube.png');
  background-repeat: no-repeat;
  background-position: top left;
  padding: 0;
}

/* Block 2 */
.block2 {
  background-color: #F4FEF7;
}
.b2-card-bg1 {  
  width: 270px;  
}
.b2-card-bg2 { 
  width: 270px;
  margin-top: 6rem;  
}
.b2-card1, .b8-card {
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.349); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 1rem;
  margin-top: 2.4rem;    
  margin-left: 2.4rem;
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.b2-card1:hover, .bl5-card:hover, .b6-card1:hover, .b8-card:hover  {
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

/* Block 3 */
.block3 {
  background-image: url('../images/bg-block-3-2.jpg');
  padding: 4rem;
  background-size: cover;
}
.bl3-card {
  height: 453px;
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.18); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 3rem;    
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
}


/* Block 4 */

.bl4-card2 {
  background-color: #4EB484;
  border-radius: 24px;
  min-width: 402px;
}
.bl4-card3 {
  background-color: #277752;
  border-radius: 24px;
  min-width: 402px;
  margin-right: 5rem;
}
.bl4-card1 p {
  line-height: 3.5rem;
}
.bl4-card3 p {
  line-height: 3.5rem;
}
.bl4-card1 ul {
  margin-top: 3.2rem;   
  z-index: 10;
  position: relative;
}
.bl4-card2 ul {
  margin-top: 3rem;  
  z-index: 10;
  position: relative;
}
.bl4-card3 ul {  
  margin-top: 3.2rem;
  z-index: 10;
  position: relative;
}
.bl4-overlay-card{
  margin-top: -13.7rem;
  height: 220px;
  width: 90%;
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.18); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 3rem;    
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  z-index: 1;
}
.nav-blocks {
  flex-wrap: nowrap;
}
.text-bl4-m {
  font-size: 9pt;
}
.bl4-m-t1 {
  line-height: 3rem
}
.nav-link-bl4-m1, .nav-link-bl4-m1.active, .nav-link-bl4-m2, .nav-link-bl4-m2.active{
  color: white;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
}

.nav-link-bl4-m1, .nav-link-bl4-m1.active {
  background-color: #4EB484;
  width: 50%;
  
}
.nav-link-bl4-m1.active, .nav-link-bl4-m2.active {
 box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.226);
 border: 1px solid rgba(255, 255, 255, 0.18); /* Белая обводка 18% */
}
.nav-link-bl4-m2, .nav-link-bl4-m2.active {
  background-color: #277752;
  width: 50%;
  line-height: 3rem
}
.tab-bl4-1 {
  background-color: #4EB484;
  border-bottom-right-radius: 24px;
}
.tab-bl4-2 {
  background-color: #277752;
  border-bottom-right-radius: 24px;
}
.bl4-overlay-card2 {
   margin-top: -12rem;
  height: 180px;
  width: 100%;
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.18); /* Белая обводка 18% */
  border-bottom-right-radius: 24px;
  border-bottom-left-radius: 24px;
  padding: 3rem;    
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  z-index: 1;
}
.tab-text-bl4 {
  z-index: 10;
  position: relative;
}

/* Block 5 */

.block5 {
  background: #B8D5C8;
  background: linear-gradient(166deg,rgba(184, 213, 200, 1) 0%, rgba(184, 213, 200, 1) 52%, rgba(149, 163, 172, 1) 100%)
}
.bl5-card {
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.18); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 1.5rem;  
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  min-height: 420px;
  max-width: 302px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  justify-self: center;
}
.bl5-title {
  font-size: 5rem;
  display: inline-block;
  min-width: 112px; /* подберите опытным путём */
  text-align: center;
  background: linear-gradient(130deg, #4ed094 0%, #062818 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 900;
  line-height: 5rem;  
}
.bl5-subtitle {
  color: #0F6F4D;
  font-weight: 500;
}
.bl5-text{
  line-height: 1.3;
}

/* Block 6 */
.b6-card-bg1 {  
  min-width: 302px;  
  padding: 0;
}
.b6-card-bg2 {  
  min-width: 302px;  
}
.b6-card1 {
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.349); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 1.5rem;
  margin-top: 2.4rem;    
  margin-left: 2.4rem;
  min-height: 310px;
  max-width: 300px;
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Block 7 */
.bl7-nav {
  margin-right: 7rem;
}
.b7-card {
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.349); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 1.5rem;
  height: 236px;  
  width: 346px;
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.b7-card:hover, .b7-card:active {
    transform: translateY(-5px) scale(1.087); /* 376 / 346 ≈ 1.087 */
}

/* Block 8 */
.b8-card{
  min-width: 290px;
  min-height: 310px;
}


/* BLock 9*/
.bl9-card {
  background: rgba(255, 255, 255, 0.1); /* Белый 10% */
  backdrop-filter: blur(10px); /* Размытие фона */
  -webkit-backdrop-filter: blur(10px); /* Для Safari */
  border: 1px solid rgba(255, 255, 255, 0.349); /* Белая обводка 18% */
  border-radius: 24px;
  padding: 2rem;
  min-height: 280px;
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.411);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Block 10 */
.b10-bg {
  background-color: #F4FEF7;
}
.accordion-button {
  font-family: 'Inter', sans-serif;
}
.accordion-flush>.accordion-item>.accordion-header .accordion-button, 
.accordion-flush>.accordion-item>.accordion-header .accordion-button.collapsed,
.accordion-flush>.accordion-item>.accordion-collapse {
  border-radius: 15px;
}
.accordion-item {
  margin-bottom: 25px;
  box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.2);
  background-color: #F1F4FB;
}
.accordion-flush>.accordion-item {
   border-radius: 15px;
}

/*Block 11*/
.bl11-card-p {
  padding-top: 4rem;
}
.bl11-i1 {
  position: absolute;
  top: 0px;
  right: 2rem;
  z-index: 10;
}
.bl11-card {
  position: relative;
  z-index: 20;
}
.bl11-i2 {
  position: absolute;    
  z-index: 30;
  margin-top: -4rem;
  left: 2rem;
}

/* Footer */
.footer-menu>ul>li {
  list-style-type: none;
}
@media (min-width: 1400px) {
    .container, .container-lg, .container-md, .container-sm, .container-xl, .container-xxl {
        max-width: 1440px;
    }
}
@media (max-width: 1399px) {
    .bl4-card3{
      min-width: 360px;
    }
    .bl4-card2{
      min-width: 360px;
    }
    .bl5-card {
      min-height: 298px;
      max-width: 80%;
    }
    .bl9-card {
      min-height: 350px;
    }

}

@media (max-width: 1199px) {
   .bl9-card {
      min-height: 450px;
    }
}


@media (max-width: 991px) {
    .hero {        
      background-size: 100%;
      background-position: bottom center;
      background-repeat: no-repeat;
    }
    .hero-text{
      margin-bottom: 20rem!important;
      height: 400px;
      padding: 1rem;
    }
    .hero-title{
      color: #0F6F4D;
      font-size: 1.5rem;
      text-align: center;
    }
    .btn-buy-hero {  
      font-size: 1rem;
      padding: 1rem 2rem;
      color: white;
      display: inline-block;
      text-decoration: none;
      transition: all 0.3s ease;
    }
    .btn-nav {
      font-weight: 400;
      font-size: 0.85rem;
      padding: 0.65rem 0.65rem;
      width: 90px;
    }
    .navbar-brand {
      padding-top: 0px;
      margin-right: 0px;
    }
    .b2-card-bg2 { 
      margin-top: 2rem;  
    }
    .b2-card-bg1 { 
      margin-top: 2rem;  
    }
    .bl3-card {
      height: auto;   
      padding: 1rem;    
    }
    .block3 {
      padding: 1rem;
    } 
    .b6-card1 {
      min-height: auto;
    }
    .b8-card{
      max-width: 300px;
    }
      .bl9-card {
      min-height: 550px;
    }
    .bl11-i2{
      margin-top: -1rem;
    }
}

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1030;
  width: 50px;
  height: 50px;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  padding: 0;
  
  /* Плавное появление */
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.95);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}