:root {
  --bg-color: #fcfcfc;
  --text-color: #2c2c2e;
  --text-light: #6e6e73;
  --accent-color: #2b3a55; /* Indigo */
  --border-color: #e5e5ea;
  --line-color: #d1d1d6;
  --white: #ffffff;
  --font-main: "Helvetica Neue", "Arial", sans-serif;
  --container-width: 1200px;
  --spacing-unit: 80px;
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-light);
  font-size: 1.05rem;
}

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

ul {
  list-style: none;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

.btn-primary {
  display: inline-block;
  padding: 15px 40px;
  border: 1px solid var(--text-color);
  color: var(--text-color);
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  margin-top: 2rem;
  transition: all 0.3s ease;
}

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

/* HEADER */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background-image: url("./image/17973911.jpg");
  background-size: cover;
  background-position: center;
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
}

.logo:hover {
  color: var(--accent-color);
  transition: all 0.3s ease;
  transform: scale(1.06);
}

.logo img {
  width: 50px;
  height: 50px;
}

.nav__list {
  display: flex;
  gap: 40px;
}

.nav__link {
  font-size: 0.9rem;
  color: var(--text-light);
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent-color);
  transition: width 0.3s ease;
}

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

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

.burger {
  display: none;
  background: none;
  border: none;
  width: 30px;
  height: 20px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}

.burger__line {
  width: 100%;
  height: 1px;
  background-color: var(--text-color);
}

/* MOBILE MENU */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-color);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu__close {
  position: absolute;
  top: 30px;
  right: 20px;
  width: 30px;
  height: 30px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu__close::before,
.mobile-menu__close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--text-color);
}

.mobile-menu__close::before {
  transform: rotate(45deg);
}

.mobile-menu__close::after {
  transform: rotate(-45deg);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: 30px;
  text-align: center;
}

.mobile-menu__link {
  font-size: 1.5rem;
  color: var(--text-color);
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background-image: url("./image/23965.jpg");
  background-size: cover;
  background-position: right;
  position: relative;
  margin-top: 70px;
}

.hero__content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.hero__divider {
  width: 60px;
  height: 1px;
  background-color: var(--accent-color);
  margin: 2rem auto;
}

.hero__text {
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 1.5rem;
}

/* SECTIONS COMMON */
.section {
  padding: var(--spacing-unit) 0;
  border-bottom: 1px solid var(--border-color);
}

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

/* GRID SECTION */
.grid-layout {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 60px;
}

.grid-item {
  padding: 20px;
  border-left: 1px solid var(--border-color);
}

/* VERTICAL SECTION */
.vertical-block {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 40px 0;
  border-bottom: 1px solid var(--border-color);
}

.vertical-block:last-child {
  border-bottom: none;
}

.vertical-block__head {
  width: 40%;
}

.vertical-block__body {
  width: 50%;
}

/* FLOW SECTION */
.flow-steps {
  display: flex;
  justify-content: space-between;
  margin-top: 60px;
}

.step {
  width: 30%;
  position: relative;
}

.step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--line-color);
}

.step__number {
  font-size: 3rem;
  color: var(--border-color);
  margin: 20px 0;
}

.step__title {
  margin-bottom: 10px;
}

/* EXPLANATION SECTION */
.text-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 40px;
}

/* BANNER SECTION */
.section--banner {
  background-image: url("./image/atom-hologram-background-showing-man-s-hand-science-technology-remix\ \(1\).jpg");
  background-size: cover;
  background-position: center;
  padding: 80px 0;
  text-align: center;
  color: var(--bg-color);
}

.banner-inner h2 {
  color: var(--accent-color);
}

.banner-inner p {
  color: var(--accent-color);
}

/* CARDS SECTION */
.cards-wrapper {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.card {
  padding: 40px;
  border: 1px solid var(--border-color);
  position: relative;
  transition: transform 0.3s ease;
}

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

.card__border {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  bottom: 10px;
  border: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.card:hover .card__border {
  border-color: var(--accent-color);
}

/* FAQ SECTION */
.faq-list {
  max-width: 800px;
  margin: 60px auto 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
  display: flex;
  justify-content: center;
}

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

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 25px 0;
  text-align: left;
  font-size: 1.2rem;
  color: var(--text-color);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer p {
  padding-bottom: 25px;
}

.faq-item.active .faq-answer {
  max-height: 200px;
}

.faq-item.active i {
  transform: rotate(45deg);
  transition: transform 0.3s ease;
}

/* FORM SECTION */
.form-wrapper {
  max-width: 600px;
  margin: 0 auto;
  padding: 60px;
  border: 1px solid var(--border-color);
  background-color: var(--white);
}

.minimal-form {
  margin-top: 40px;
}

.form-group {
  margin-bottom: 30px;
}

.form-group label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: var(--text-light);
}

.form-group input {
  width: 100%;
  padding: 10px 0;
  border: none;
  border-bottom: 1px solid var(--border-color);
  background: transparent;
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s ease;
}

.form-group input:focus {
  border-bottom-color: var(--accent-color);
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  margin-bottom: 40px;
}

.form-checkbox input {
  margin-top: 5px;
}

.form-checkbox label {
  font-size: 0.8rem;
  color: var(--text-light);
  line-height: 1.4;
}

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

.btn-submit {
  width: 100%;
  padding: 15px;
  background-color: var(--text-color);
  color: var(--white);
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

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

/* FOOTER */
.footer {
  padding: 60px 0;
  border-top: 1px solid var(--border-color);
  background-color: var(--white);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer__block h4 {
  margin-bottom: 15px;
}

.footer__links a {
  display: block;
  margin-bottom: 10px;
  font-size: 0.9rem;
  color: var(--text-light);
  transition: all 0.3s ease;
}

.footer__links a:hover {
  transition: all 0.3s ease;
  color: var(--text-color);
  text-decoration: underline;
}

.footer__bottom {
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--text-light);
  text-align: center;
}

/* COOKIE POPUP */
.cookie-popup {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: var(--white);
  border: 1px solid var(--border-color);
  padding: 20px;
  max-width: 300px;
  z-index: 2000;
  display: none;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.03);
}

.cookie-content p {
  font-size: 0.9rem;
  margin-bottom: 15px;
}

.btn-cookie {
  background-color: var(--text-color);
  color: var(--white);
  border: none;
  padding: 8px 20px;
  cursor: pointer;
  font-size: 0.8rem;
}

/* RESPONSIVE */
@media (max-width: 992px) {
  .grid-layout {
    grid-template-columns: 1fr;
  }

  .vertical-block {
    flex-direction: column;
  }

  .vertical-block__head,
  .vertical-block__body {
    width: 100%;
    margin-bottom: 20px;
  }

  .flow-steps {
    flex-direction: column;
    gap: 40px;
  }

  .step {
    width: 100%;
  }

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

  .cards-wrapper {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .burger {
    display: flex;
  }

  .form-wrapper {
    padding: 30px 20px;
  }
}

.pages {
  padding: 120px 0;
}

.pages-wrap {
  max-width: 1000px;
  padding: 0 20px;
  margin: 0 auto 20px;
}

.pages h1 {
  font-size: 40px;
  font-weight: 900;
  color: var(--accent);
  margin-bottom: 40px;
  text-align: center;
}

.text-wrapper {
  background: #f8fafc;
  padding: 50px 40px;
  border-radius: 20px;
  line-height: 1.8;
}

.text-wrapper h2 {
  font-size: 28px;
  font-weight: 700;
  color: #1e293b;
  margin-top: 40px;
  margin-bottom: 15px;
  border-bottom: 2px solid rgba(99, 102, 241, 0.2);
  padding-bottom: 5px;
}

.text-wrapper h3 {
  color: #000000;
  margin-bottom: 20px;
}

.text-wrapper p {
  color: #64748b;
  margin-bottom: 20px;
}

.text-wrapper ul {
  list-style-type: none;
  padding-left: 0;
  margin-bottom: 20px;
}

.text-wrapper ul li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 15px;
  color: #1e293b;
}

.text-wrapper ul li::before {
  content: "•";
  position: absolute;
  left: 0;
  font-size: 20px;
  line-height: 1;
  color: var(--primary);
  top: 0;
}

.text-wrapper strong {
  color: var(--color-error);
}

.text-wrapper a {
  color: #001eff;
  text-decoration: underline;
  font-weight: 600;
}

@media (max-width: 768px) {
  .pages {
    padding: 100px 0 60px;
  }
  .pages h1 {
    font-size: 28px;
    margin-bottom: 30px;
  }
  .text-wrapper {
    padding: 30px 20px;
  }
  .text-wrapper h2 {
    font-size: 24px;
    margin-top: 30px;
  }
}

.text-wrapper ol {
  display: flex;
  flex-direction: column;
  padding: 20px;
  color: #000000;
}

.margin {
  margin: 120px 0 50px;
}