:root {
  --background: #fbfcff;
  --ink: #0c1b38;
  --text: #4d596d;
  --blue: #1666f5;
  --blue-dark: #0951d5;
  --blue-pale: #eaf2ff;
  --line: #e4eaf4;
  --container: 1200px;
}

* { box-sizing: border-box; }

html { min-width: 320px; scroll-behavior: smooth; }

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--background);
  color: var(--ink);
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }

.container {
  width: min(calc(100% - 48px), var(--container));
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 2;
  width: 100%;
  border-bottom: 1px solid var(--line);
  background: rgb(255 255 255 / 92%);
}

.site-header__inner {
  display: flex;
  min-height: 71px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  color: var(--ink);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.04em;
  text-decoration: none;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 13px;
  cursor: pointer;
  font-weight: 600;
  line-height: 1.2;
  transition: background-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.button:focus-visible, .logo:focus-visible {
  outline: 3px solid rgb(22 102 245 / 35%);
  outline-offset: 3px;
}

.button--header {
  min-height: 43px;
  padding: 10px 21px;
  background: var(--blue);
  color: #fff;
  font-size: 14px;
}

.button:hover {
  background: var(--blue-dark);
  box-shadow: 0 10px 22px rgb(22 102 245 / 22%);
  transform: translateY(-1px);
}

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

.hero {
  position: relative;
  isolation: isolate;
  width: 100%;
  min-height: calc(100svh - 71px);
  overflow: hidden;
  background-color: var(--background);
  background-image: url("../hero_block.jpg");
  background-position: center right;
  background-repeat: no-repeat;
  background-size: cover;
}

.hero::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(90deg, rgb(251 252 255 / 100%) 0%, rgb(251 252 255 / 100%) 40%, rgb(251 252 255 / 94%) 51%, rgb(251 252 255 / 70%) 62%, rgb(251 252 255 / 27%) 76%, rgb(251 252 255 / 0%) 90%);
  content: "";
}

.hero__layout {
  position: relative;
  z-index: 1;
  min-height: calc(100svh - 71px);
}

.hero__content {
  width: min(100%, 660px);
  padding: clamp(34px, 5.2vh, 52px) 0 35px;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 19px;
  padding: 8px 13px;
  border-radius: 8px;
  background: var(--blue-pale);
  color: var(--blue);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.hero__title {
  max-width: 655px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(40px, 3vw, 48px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.12;
}

.hero__title span { display: block; color: var(--blue); }

.hero__description {
  max-width: 640px;
  margin-top: 18px;
  color: var(--text);
  font-size: clamp(16px, 1.05vw, 17px);
  letter-spacing: -0.025em;
  line-height: 1.48;
}

.hero__description p { margin: 0; }
.hero__description p + p { margin-top: 13px; }

.benefits {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 30px);
  max-width: 700px;
  margin: 25px 0 0;
  padding: 0;
  list-style: none;
}

.benefits__item {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.42;
}

.benefits__icon {
  display: grid;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  place-items: center;
  border-radius: 50%;
  background: var(--blue-pale);
  color: var(--blue);
}

.benefits__icon svg { width: 20px; height: 20px; }
.hero__action { margin-top: 27px; }

.button--primary {
  min-height: 60px;
  gap: 16px;
  padding: 14px 28px;
  background: var(--blue);
  color: #fff;
  font-size: clamp(16px, 1.25vw, 19px);
  letter-spacing: -0.025em;
}

.button__arrow {
  font-size: 26px;
  font-weight: 400;
  line-height: 0.65;
  transition: transform 180ms ease;
}

.button--primary:hover .button__arrow { transform: translateX(4px); }

.hero__note {
  margin: 12px 0 0;
  color: #68758b;
  font-size: 14px;
  letter-spacing: -0.025em;
  line-height: 1.45;
}

/* Второй экран: этапы работы с ИИ. */
.process {
  width: 100%;
  padding: clamp(76px, 9vw, 128px) 0 clamp(80px, 9vw, 132px);
  background: #fff;
}

.process__intro {
  max-width: 805px;
}

.process__eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.process__title {
  max-width: 800px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 3.2vw, 48px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.13;
}

.process__description {
  max-width: 735px;
  margin-top: 27px;
  color: var(--text);
  font-size: 17px;
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.process__description p {
  margin: 0;
}

.process__description p + p {
  margin-top: 13px;
}

.process__description strong {
  color: var(--ink);
  font-weight: 600;
}

.process__subtitle {
  margin: 30px 0 0;
  color: var(--ink);
  font-size: clamp(19px, 1.65vw, 23px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.35;
}

.process__steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 36px;
}

.process__steps::before {
  position: absolute;
  z-index: 0;
  top: 49px;
  left: 12.5%;
  width: 75%;
  height: 1px;
  background: linear-gradient(90deg, rgb(22 102 245 / 18%), rgb(22 102 245 / 55%), rgb(22 102 245 / 18%));
  content: "";
}

.process-card {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 304px;
  flex-direction: column;
  padding: 24px 22px 23px;
  border: 1px solid #e1e8f4;
  border-radius: 18px;
  background: rgb(255 255 255 / 94%);
  box-shadow: 0 10px 30px rgb(12 27 56 / 4%);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.process-card:hover {
  border-color: rgb(22 102 245 / 32%);
  box-shadow: 0 16px 34px rgb(22 102 245 / 10%);
  transform: translateY(-4px);
}

.process-card__top {
  display: flex;
  min-height: 51px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.process-card__number {
  color: #c3d6fa;
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.07em;
  line-height: 1;
}

.process-card__icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border-radius: 13px;
  background: var(--blue-pale);
  color: var(--blue);
}

.process-card__icon svg {
  width: 23px;
  height: 23px;
}

.process-card__title {
  margin: 22px 0 0;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.3;
}

.process-card__text {
  margin: 13px 0 0;
  color: var(--text);
  font-size: 14px;
  letter-spacing: -0.018em;
  line-height: 1.5;
}

.process__accent {
  max-width: 750px;
  margin: 35px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--blue);
  color: var(--ink);
  font-size: clamp(18px, 1.65vw, 22px);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.4;
}

/* Третий экран: варианты применения навыка. */
.opportunities {
  width: 100%;
  padding: clamp(78px, 8.8vw, 124px) 0 clamp(82px, 9vw, 130px);
  background: #f4f8fe;
}

.opportunities__intro {
  max-width: 770px;
}

.opportunities__eyebrow {
  margin: 0 0 18px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.2;
}

.opportunities__title {
  margin: 0;
  color: var(--ink);
  font-size: clamp(34px, 3.2vw, 48px);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.13;
}

.opportunities__description {
  max-width: 695px;
  margin: 25px 0 0;
  color: var(--text);
  font-size: 17px;
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.opportunities__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 38px;
}

.opportunities-card {
  display: flex;
  min-height: 247px;
  flex-direction: column;
  padding: 31px 32px 29px;
  border: 1px solid #e0e8f5;
  border-radius: 20px;
  background: #fff;
  box-shadow: 0 9px 25px rgb(12 27 56 / 4%);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.opportunities-card:hover {
  border-color: rgb(22 102 245 / 28%);
  box-shadow: 0 17px 32px rgb(12 27 56 / 10%);
  transform: translateY(-4px);
}

.opportunities-card__icon {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 17px;
  background: var(--blue-pale);
  color: var(--blue);
}

.opportunities-card__icon svg {
  width: 31px;
  height: 31px;
}

.opportunities-card__title {
  margin: 25px 0 0;
  color: var(--ink);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.25;
}

.opportunities-card__text {
  max-width: 425px;
  margin: 12px 0 0;
  color: var(--text);
  font-size: 16px;
  letter-spacing: -0.022em;
  line-height: 1.5;
}

.opportunities__conclusion {
  max-width: 780px;
  margin-top: 39px;
}

.opportunities__highlight {
  margin: 0;
  color: var(--ink);
  font-size: clamp(20px, 1.8vw, 24px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.38;
}

.opportunities__supporting {
  margin: 11px 0 0;
  color: var(--text);
  font-size: 17px;
  letter-spacing: -0.025em;
  line-height: 1.5;
}

.opportunities__button {
  margin-top: 29px;
}

.site-footer {
  width: 100%;
  padding: 36px 0 39px;
  border-top: 1px solid #dfe7f3;
  background: #fff;
}

.site-footer__inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 34px 48px;
}

.site-footer__details {
  flex: 0 1 auto;
  color: #68758b;
  font-size: 13px;
  letter-spacing: -0.018em;
  line-height: 1.55;
}

.site-footer__copyright,
.site-footer__ogrnip {
  margin: 0;
}

.site-footer__ogrnip {
  margin-top: 4px;
}

.site-footer__links {
  display: flex;
  max-width: 680px;
  flex: 0 1 680px;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 20px;
}

.site-footer__links a {
  color: #52617a;
  font-size: 13px;
  letter-spacing: -0.018em;
  line-height: 1.55;
  text-decoration: none;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 180ms ease, text-decoration-color 180ms ease;
}

.site-footer__links a:hover {
  color: var(--blue);
  text-decoration: underline;
}

.site-footer__links a:focus-visible {
  outline: 3px solid rgb(22 102 245 / 35%);
  outline-offset: 3px;
}

@media (max-width: 680px) {
  .opportunities__grid {
    grid-template-columns: 1fr;
  }

  .opportunities-card {
    min-height: 0;
  }

  .site-footer__inner {
    flex-direction: column;
  }

  .site-footer__links {
    max-width: none;
    justify-content: flex-start;
  }
}

@media (max-width: 1100px) {
  .process__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .process__steps::before {
    display: none;
  }

  .process-card {
    min-height: 258px;
  }
}

@media (max-width: 1240px) {
  .hero::before {
    background: linear-gradient(90deg, rgb(251 252 255 / 100%) 0%, rgb(251 252 255 / 100%) 47%, rgb(251 252 255 / 96%) 59%, rgb(251 252 255 / 76%) 70%, rgb(251 252 255 / 28%) 86%, rgb(251 252 255 / 0%) 100%);
  }
}

@media (max-width: 1024px) {
  .hero { background-position: 64% center; }
  .hero::before {
    background: linear-gradient(90deg, rgb(251 252 255 / 100%) 0%, rgb(251 252 255 / 100%) 57%, rgb(251 252 255 / 94%) 70%, rgb(251 252 255 / 60%) 88%, rgb(251 252 255 / 22%) 100%);
  }
  .hero__content { width: min(100%, 610px); }
  .hero__title { font-size: clamp(39px, 4.3vw, 45px); }
  .benefits { gap: 13px; }
  .benefits__item { gap: 10px; font-size: 14px; }
}

@media (max-width: 767px) {
  .container { width: min(calc(100% - 40px), var(--container)); }
  .site-header__inner { min-height: 66px; }
  .logo { font-size: 18px; }
  .button--header { min-height: 42px; padding-inline: 15px; font-size: 13px; }
  .hero { min-height: auto; background-image: none; }
  .hero::before { display: none; }
  .hero__layout { min-height: auto; }
  .hero__content { width: 100%; padding: 54px 0 38px; }
  .eyebrow { margin-bottom: 22px; font-size: 11px; }
  .hero__title { font-size: clamp(37px, 8.5vw, 48px); line-height: 1.11; }
  .hero__description { margin-top: 22px; font-size: 16px; line-height: 1.52; }
  .benefits { grid-template-columns: 1fr; gap: 15px; margin-top: 30px; }
  .benefits__item { align-items: center; gap: 13px; font-size: 15px; }
  .hero__action { margin-top: 31px; }
  .button--primary { width: 100%; min-height: 62px; padding-inline: 20px; }
  .hero__note { margin-top: 14px; }

  .process {
    padding: 74px 0 82px;
  }

  .process__title {
    font-size: clamp(32px, 7.8vw, 42px);
  }

  .process__description {
    margin-top: 22px;
    font-size: 16px;
  }

  .process__subtitle {
    margin-top: 26px;
    font-size: 20px;
  }

  .process__steps {
    grid-template-columns: 1fr;
    margin-top: 29px;
  }

  .process-card {
    min-height: 0;
    padding: 23px 21px;
  }

  .process__accent {
    margin-top: 29px;
    padding-left: 15px;
    font-size: 18px;
  }

  .opportunities {
    padding: 74px 0 82px;
  }

  .opportunities__title {
    font-size: clamp(32px, 7.8vw, 42px);
  }

  .opportunities__description {
    margin-top: 22px;
    font-size: 16px;
  }

  .opportunities__grid {
    gap: 16px;
    margin-top: 30px;
  }

  .opportunities-card {
    padding: 26px 24px;
  }

  .opportunities-card__icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
  }

  .opportunities-card__title {
    margin-top: 21px;
    font-size: 21px;
  }

  .opportunities__conclusion {
    margin-top: 31px;
  }

  .opportunities__highlight {
    font-size: 20px;
  }

  .opportunities__supporting {
    font-size: 16px;
  }

  .opportunities__button {
    width: 100%;
    margin-top: 25px;
  }
}

@media (max-width: 390px) {
  .container { width: min(calc(100% - 32px), var(--container)); }
  .site-header__inner { gap: 12px; }
  .logo { font-size: 16px; }
  .button--header { padding-inline: 12px; font-size: 12px; }
  .hero__content { padding-top: 43px; }
  .eyebrow { padding: 8px 10px; font-size: 10px; letter-spacing: 0.09em; }
  .hero__title { font-size: clamp(33px, 10vw, 39px); letter-spacing: -0.05em; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}