/* Четвёртый блок: фиксированный тезис слева и вертикальная карта процесса справа. */

.steps {
  --steps-gutter: clamp(16px, 1.4vw, 24px);
  --steps-columns: repeat(4, minmax(0, 1fr));

  position: relative;
  padding: 0 var(--steps-gutter);
  overflow: clip;
  background: #fff;
  color: var(--color-bg);
}

.steps__grid-lines {
  position: absolute;
  inset: 0 var(--steps-gutter);
  display: grid;
  grid-template-columns: var(--steps-columns);
  pointer-events: none;
}

.steps__grid-lines span {
  border-left: 1px solid var(--color-light-grid);
}

.steps__grid-lines span:first-child {
  border-left: 0;
}

.steps__layout {
  position: relative;
  display: grid;
  grid-template-columns: var(--steps-columns);
  border-top: 1px solid var(--color-light-grid);
  align-items: start;
}

.steps__intro {
  position: sticky;
  top: 0;
  grid-column: 1 / 3;
  grid-row: 1;
  align-self: start;
  display: flex;
  min-height: 100svh;
  flex-direction: column;
  justify-content: flex-start;
  gap: clamp(52px, 7vw, 104px);
  padding: clamp(24px, 3vw, 42px) clamp(18px, 2vw, 30px) clamp(86px, 8vw, 120px) 0;
}

.steps__label {
  display: flex;
  align-items: flex-start;
  gap: 4px;
  font-size: 12px;
  line-height: 1;
  color: var(--color-bg);
}

.steps__label-num,
.steps__label-name {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  white-space: nowrap;
}

.steps__label-num {
  min-width: 46px;
  padding-inline: 12px;
  background: var(--color-red);
  color: var(--color-white);
}

.steps__label-name {
  padding-inline: 11px;
  border: 1px solid var(--color-bg);
  background: #fff;
  color: var(--color-bg);
}

.steps__title {
  width: 100%;
  font-family: "NAMU Display", Arial, sans-serif;
  font-size: clamp(50px, 4.7vw, 82px);
  font-weight: 400;
  line-height: 0.84;
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.steps__title span {
  display: block;
  white-space: nowrap;
}

.steps__title span:nth-child(2) {
  margin-left: 7%;
}

.steps__title span:last-child {
  margin-left: 18%;
  color: var(--color-red);
}

.steps__list {
  grid-column: 3 / 5;
  grid-row: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  min-height: clamp(205px, 19vw, 280px);
  border-bottom: 1px solid var(--color-light-grid);
}

.step__num {
  padding: clamp(24px, 3vw, 42px) clamp(12px, 1.4vw, 20px);
  font-size: clamp(28px, 2.8vw, 42px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(4, 10, 10, 0.34);
  font-variant-numeric: tabular-nums;
  transition: color 180ms ease;
}

.step__body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  margin: 0;
  padding: clamp(24px, 3vw, 42px) clamp(16px, 2vw, 30px);
  border-left: 1px solid var(--color-light-grid);
}

.step__title {
  margin: 0;
  font-size: clamp(24px, 2.35vw, 36px);
  font-weight: 500;
  line-height: 1.04;
  letter-spacing: -0.04em;
  color: var(--color-bg);
}

.step__text {
  max-width: 30ch;
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.3;
  color: rgba(4, 10, 10, 0.58);
}

.steps.is-focus-ready .step__title,
.steps.is-focus-ready .step__text {
  color: rgba(4, 10, 10, 0.28);
  transition: color 360ms ease;
}

.steps.is-focus-ready .step.is-focus .step__title,
.steps.is-focus-ready .step.is-focus .step__text {
  color: var(--color-bg);
}

.step:hover .step__num {
  color: var(--color-red);
}

.step:last-child {
  border-bottom: 0;
}

@media (max-width: 900px) {
  .steps {
    --steps-columns: repeat(2, minmax(0, 1fr));
  }

  .steps__grid-lines span:nth-child(n + 3) {
    display: none;
  }

  .steps__intro {
    position: static;
    grid-column: 1 / -1;
    grid-row: auto;
    min-height: clamp(360px, 50svh, 460px);
    justify-content: space-between;
    gap: 0;
    padding-right: 0;
    padding-bottom: clamp(40px, 6vw, 64px);
    border-bottom: 1px solid var(--color-light-grid);
  }

  .steps__title {
    font-size: clamp(48px, 9vw, 72px);
    line-height: 0.88;
  }

  .steps__title span {
    white-space: normal;
  }

  .steps__title span:nth-child(2) {
    margin-left: 10%;
    text-align: left;
  }

  .steps__title span:last-child {
    margin-left: 0;
    text-align: right;
  }

  .steps__list {
    grid-column: 1 / -1;
    grid-row: auto;
  }

  .step {
    grid-template-columns: 96px 1fr;
    min-height: 180px;
  }

  .step__body {
    gap: 22px;
  }

  .steps.is-focus-ready .step__title,
  .steps.is-focus-ready .step__text {
    color: var(--color-bg);
  }
}

@media (max-width: 560px) {
  .steps__intro {
    min-height: 330px;
    padding-bottom: 36px;
  }

  .steps__title {
    font-size: clamp(34px, 9.5vw, 42px);
  }

  .step {
    grid-template-columns: 46px 1fr;
    min-height: 0;
  }

  .step__num {
    padding-right: 8px;
    padding-left: 0;
    font-size: 18px;
  }

  .step__body {
    gap: 18px;
    padding-top: 22px;
    padding-bottom: 22px;
    padding-right: 14px;
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .step__num,
  .steps.is-focus-ready .step__title,
  .steps.is-focus-ready .step__text {
    transition: none;
  }

  .steps.is-focus-ready .step__title,
  .steps.is-focus-ready .step__text {
    color: var(--color-bg);
  }
}