.concept-index {
  background: var(--bg);
}

.index-header {
  height: var(--header-height);
  border-bottom: 3px solid var(--line);
}

.index-header-inner {
  height: 100%;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
}

.index-wordmark {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 12px;
  font-family: "Archivo Black", sans-serif;
  font-size: 17px;
  text-decoration: none;
}

.index-wordmark img {
  width: 24px;
  height: 42px;
  object-fit: contain;
}

.index-meta {
  display: flex;
  gap: 20px;
  font-family: "Archivo Black", sans-serif;
  font-size: 9px;
}

.index-header .site-button {
  justify-self: end;
}

.index-intro {
  padding-block: 78px 58px;
  border-bottom: 3px solid var(--line);
}

.index-kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 38px;
  font-family: "Archivo Black", sans-serif;
  font-size: 10px;
}

.index-kicker span:first-child {
  padding: 9px 12px;
  border: 2px solid var(--line);
  background: var(--accent);
}

.index-title-row {
  display: grid;
  grid-template-columns: 1.25fr .75fr;
  gap: 70px;
  align-items: end;
}

.index-title-row h1 {
  margin-bottom: 0;
  font-size: 72px;
  font-weight: 900;
  line-height: 1.05;
  word-break: keep-all;
}

.index-title-row mark {
  padding: 0 8px 4px;
  border: 3px solid var(--line);
  background: var(--primary);
  color: var(--ink);
}

.index-title-row p {
  margin-bottom: 3px;
  font-size: 18px;
  line-height: 1.75;
}

.index-concepts {
  padding-block: 60px 100px;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.index-card {
  border: 3px solid var(--line);
  background: var(--surface);
}

.index-card > a {
  display: block;
  padding: 12px 12px 20px;
  color: inherit;
  text-decoration: none;
}

.index-preview {
  height: 380px;
  overflow: hidden;
  border: 2px solid var(--line);
  background: var(--surface);
}

.index-preview img {
  object-fit: cover;
  object-position: top;
  transition: transform 650ms cubic-bezier(.2, .8, .2, 1);
}

.index-card:hover .index-preview img,
.index-card:focus-within .index-preview img {
  transform: translateY(-4%) scale(1.02);
}

.index-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  font-family: "Archivo Black", sans-serif;
  font-size: 9px;
}

.index-card-head b {
  padding: 8px 9px;
  border: 2px solid var(--line);
  background: var(--surface);
}

.index-card-a .index-card-head b {
  background: var(--primary);
}

.index-card-b {
  background: var(--ink);
  color: var(--surface);
}

.index-card-b .index-card-head b {
  border-color: var(--surface);
  background: var(--accent);
  color: var(--ink);
}

.index-card-c .index-card-head b {
  background: var(--accent);
}

.index-card h3 {
  margin: 20px 0 13px;
  font-size: 30px;
  line-height: 1.05;
}

.index-card p {
  min-height: 82px;
  margin-bottom: 20px;
  font-size: 15px;
  line-height: 1.65;
}

.index-card dl {
  margin: 0;
  border-top: 1px solid currentColor;
}

.index-card dl div {
  display: grid;
  min-height: 46px;
  grid-template-columns: 90px 1fr;
  align-items: center;
  border-bottom: 1px solid currentColor;
}

.index-card dt {
  font-size: 11px;
  font-weight: 800;
}

.index-card dd {
  margin: 0;
  font-size: 13px;
}

.index-open {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 18px;
  font-weight: 800;
}

.index-open svg {
  width: 19px;
  height: 19px;
}

.index-decision {
  padding-block: 100px;
  border-top: 3px solid var(--line);
  background: var(--accent);
}

.index-decision-head {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: end;
}

.index-label {
  display: inline-flex;
  margin-bottom: 25px;
  padding: 9px 11px;
  border: 2px solid var(--line);
  background: var(--surface);
  font-family: "Archivo Black", sans-serif;
  font-size: 9px;
}

.index-decision h2 {
  margin-bottom: 0;
  font-size: 64px;
  font-weight: 900;
  line-height: 1.05;
}

.index-decision p {
  margin-bottom: 0;
  font-size: 19px;
  line-height: 1.75;
}

.index-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 48px;
}

.index-footer {
  padding-block: 44px;
  background: var(--ink);
  color: var(--surface);
}

.index-footer .site-container,
.index-footer .site-container > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.index-footer strong {
  font-family: "Archivo Black", sans-serif;
  font-size: 18px;
}

.index-footer span {
  color: var(--muted);
  font-size: 13px;
}

.concept-index .demo-notice {
  border-color: var(--surface);
}

@media (max-width: 1000px) {
  .index-title-row h1 {
    font-size: 61px;
  }

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

  .index-card > a {
    display: grid;
    grid-template-columns: .9fr 1.1fr;
    column-gap: 24px;
  }

  .index-preview {
    height: 360px;
    grid-row: 1 / span 6;
  }

  .index-card p {
    min-height: 0;
  }
}

@media (max-width: 760px) {
  .index-header-inner {
    grid-template-columns: 1fr auto;
  }

  .index-meta {
    display: none;
  }

  .index-header .site-button {
    min-height: 44px;
    padding-inline: 13px;
    font-size: 12px;
  }

  .index-intro {
    padding-block: 54px 42px;
  }

  .index-title-row,
  .index-decision-head {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .index-title-row h1,
  .index-decision h2 {
    font-size: 50px;
  }

  .index-concepts {
    padding-block: 36px 72px;
  }

  .index-card > a {
    display: block;
  }

  .index-preview {
    height: 420px;
  }

  .index-decision {
    padding-block: 76px;
  }
}

@media (max-width: 520px) {
  .index-wordmark span {
    font-size: 13px;
  }

  .index-header .site-button {
    width: 48px;
    overflow: hidden;
    padding: 0;
    gap: 0;
    color: transparent;
  }

  .index-header .site-button svg {
    color: var(--surface);
  }

  .index-kicker {
    align-items: flex-start;
    flex-direction: column;
  }

  .index-title-row h1,
  .index-decision h2 {
    font-size: 42px;
  }

  .index-title-row p,
  .index-decision p {
    font-size: 16px;
  }

  .index-preview {
    height: 330px;
  }

  .index-card h3 {
    font-size: 27px;
  }

  .index-actions {
    display: grid;
  }

  .index-footer .site-container,
  .index-footer .site-container > div {
    align-items: flex-start;
    flex-direction: column;
  }
}