.installation-center {
  --installation-blue: #1e78ff;
  --installation-cyan: #12ccf4;
  --installation-orange: #ff6737;
  --installation-line: rgba(75, 151, 255, 0.28);
  --installation-panel: rgba(5, 19, 41, 0.9);
  display: grid;
  gap: 28px;
  margin-top: 24px;
}

.installation-section {
  scroll-margin-top: 104px;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--installation-line);
  border-radius: 22px;
  background:
    linear-gradient(145deg, rgba(12, 42, 86, 0.42), rgba(3, 13, 30, 0.92)),
    var(--installation-panel);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.19);
}

.installation-section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: end;
  margin-bottom: 25px;
}

.installation-section-heading > div {
  max-width: 800px;
}

.installation-section-heading h2 {
  margin: 7px 0 8px;
  color: #f7fbff;
  font: 800 clamp(25px, 3vw, 40px)/1.07 "Saira", sans-serif;
  letter-spacing: -0.025em;
}

.installation-section-heading p {
  margin: 0;
  color: #aabbd3;
  font: 500 15px/1.72 "Hanken Grotesk", sans-serif;
}

.installation-component-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.installation-component-card,
.installation-step,
.installation-document-card,
.installation-check-item {
  min-width: 0;
  border: 1px solid rgba(74, 143, 233, 0.24);
  background: rgba(4, 17, 37, 0.74);
}

.installation-component-card {
  min-height: 132px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 17px;
  border-radius: 16px;
}

.installation-component-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(18, 204, 244, 0.48);
  border-radius: 11px;
  background: rgba(11, 96, 193, 0.23);
  color: var(--installation-cyan);
}

.installation-component-icon svg {
  width: 23px;
  height: 23px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.installation-component-card h3,
.installation-step h3,
.installation-document-card h3 {
  margin: 0;
  color: #f5f9ff;
  font-family: "Saira", sans-serif;
}

.installation-component-card h3 {
  font-size: 17px;
  line-height: 1.2;
}

.installation-component-copy {
  min-width: 0;
}

.installation-component-copy p {
  margin: 8px 0 0;
  color: #93a8c4;
  font: 500 13px/1.55 "Hanken Grotesk", sans-serif;
}

.installation-steps {
  counter-reset: installation-step;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.installation-step {
  counter-increment: installation-step;
  position: relative;
  padding: 23px 23px 23px 76px;
  border-radius: 16px;
}

.installation-step::before {
  content: counter(installation-step, decimal-leading-zero);
  position: absolute;
  top: 21px;
  left: 20px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(18, 204, 244, 0.46);
  border-radius: 10px;
  background: rgba(14, 91, 190, 0.24);
  color: var(--installation-cyan);
  font: 700 12px/1 "JetBrains Mono", monospace;
}

.installation-step h3 {
  font-size: 18px;
}

.installation-step p {
  margin: 7px 0 12px;
  color: #9dafc8;
  font: 500 13px/1.57 "Hanken Grotesk", sans-serif;
}

.installation-step a {
  color: #72dfff;
  font: 700 12px/1.3 "Saira", sans-serif;
  text-decoration: none;
}

.installation-step a:hover,
.installation-step a:focus-visible {
  color: #fff;
  text-decoration: underline;
  outline: none;
}

.installation-document-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 20px;
}

.installation-document-toolbar button {
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid rgba(70, 134, 221, 0.3);
  border-radius: 10px;
  background: #071a38;
  color: #a8bad3;
  font: 700 12px/1 "Saira", sans-serif;
  cursor: pointer;
}

.installation-document-toolbar button:hover,
.installation-document-toolbar button:focus-visible,
.installation-document-toolbar button.is-active {
  border-color: var(--installation-cyan);
  background: #0b3d83;
  color: #fff;
  outline: none;
}

.installation-document-count {
  margin: 0 0 13px;
  color: #8096b5;
  font: 600 12px/1.4 "Hanken Grotesk", sans-serif;
}

.installation-document-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.installation-document-card {
  display: flex;
  flex-direction: column;
  min-height: 218px;
  padding: 18px;
  border-radius: 16px;
}

.installation-document-card[hidden] {
  display: none;
}

.installation-document-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.installation-document-code,
.installation-document-format,
.installation-document-category {
  font-family: "JetBrains Mono", monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.installation-document-code {
  color: var(--installation-cyan);
}

.installation-document-format,
.installation-document-category {
  color: #7188a8;
}

.installation-document-card h3 {
  margin-top: 16px;
  font-size: 17px;
  line-height: 1.24;
}

.installation-document-card p {
  margin: 9px 0 14px;
  color: #94a7c0;
  font: 500 13px/1.55 "Hanken Grotesk", sans-serif;
}

.installation-document-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: flex-start;
  min-width: 118px;
  padding: 0 16px;
  border: 1px solid rgba(96, 205, 255, 0.58);
  border-radius: 10px;
  background: linear-gradient(135deg, #176de6, #08a9d8);
  color: #fff;
  font: 800 12px/1 "Saira", sans-serif;
  box-shadow: 0 9px 20px rgba(0, 126, 231, 0.2);
}

.installation-document-button:disabled {
  opacity: 0.82;
  cursor: not-allowed;
}

.installation-check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.installation-check-item {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 15px;
  border-radius: 13px;
  color: #c3d0e1;
  font: 600 13px/1.48 "Hanken Grotesk", sans-serif;
}

.installation-check-item::before {
  content: "✓";
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(18, 204, 244, 0.42);
  border-radius: 8px;
  background: rgba(18, 204, 244, 0.09);
  color: var(--installation-cyan);
  font-weight: 900;
}

@media (max-width: 900px) {
  .installation-component-grid,
  .installation-document-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .installation-section-heading {
    grid-template-columns: 1fr;
    align-items: start;
  }
}

@media (max-width: 620px) {
  .installation-center {
    gap: 18px;
    margin-top: 18px;
  }

  .installation-section {
    scroll-margin-top: 90px;
    padding: 21px 16px;
    border-radius: 17px;
  }

  .installation-section-heading {
    gap: 12px;
    margin-bottom: 19px;
  }

  .installation-section-heading h2 {
    font-size: 27px;
  }

  .installation-component-grid,
  .installation-steps,
  .installation-document-grid,
  .installation-check-grid {
    grid-template-columns: 1fr;
  }

  .installation-component-card {
    min-height: 0;
  }

  .installation-step {
    padding: 19px 17px 19px 68px;
  }

  .installation-step::before {
    top: 18px;
    left: 15px;
  }

  .installation-document-toolbar {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .installation-document-toolbar button:first-child {
    grid-column: 1 / -1;
  }

  .installation-document-card {
    min-height: 0;
  }

}

@media (max-width: 360px) {
  .installation-document-toolbar {
    grid-template-columns: 1fr;
  }

  .installation-document-toolbar button:first-child {
    grid-column: auto;
  }
}