:root {
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: #111720;
  color: #e5ebf3;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: inherit;
  text-decoration: none;
}
a:hover {
  color: #9be8ff;
}
a:focus-visible {
  outline: 2px solid #9be8ff;
  outline-offset: 5px;
}
header,
footer {
  max-width: 1200px;
  margin: auto;
  padding: 28px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
}
header {
  border-bottom: 1px solid #2a3340;
}
.brand {
  font-size: 18px;
  letter-spacing: -0.5px;
}
.mark {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin-right: 10px;
  border: 1px solid #486571;
  color: #a2e6fb;
  border-radius: 8px;
  vertical-align: middle;
  font-size: 26px;
}
nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 13px;
  color: #a2afc0;
}
.button {
  background: #9be8ff;
  border-radius: 6px;
  padding: 13px 20px;
  color: #172630 !important;
  font-size: 13px;
  font-weight: 650;
  display: inline-block;
}
.secondary {
  border: 1px solid #414d5e;
  padding: 13px 20px;
  border-radius: 6px;
  font-size: 13px;
}
.hero {
  max-width: 1200px;
  margin: auto;
  min-height: 570px;
  padding: 70px 30px 55px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 35px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 2px;
  color: #a3bed0;
}
.eyebrow:before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #bbe69b;
  border-radius: 50%;
  margin-right: 10px;
}
h1 {
  font-size: clamp(42px, 5.2vw, 68px);
  line-height: 1.06;
  letter-spacing: -3px;
  font-weight: 550;
  margin: 22px 0;
}
h1 em {
  font-style: normal;
  color: #9be8ff;
}
.hero p {
  font-size: 16px;
  color: #a4b1c2;
  line-height: 1.8;
  max-width: 440px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  margin: 30px 0 24px;
}
.micro {
  font-size: 11px;
  color: #91a0b4;
}
.preview {
  border: 1px solid #34414e;
  border-radius: 12px;
  overflow: hidden;
  background: #171f2b;
  box-shadow: 0 30px 100px #0003;
  transform: rotate(-2deg);
}
.preview-top {
  padding: 15px 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid #2d3948;
  font-size: 10px;
  color: #a4b1c2;
}
.preview-top i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #526174;
}
.preview-top span {
  margin-left: auto;
}
.preview-canvas {
  background-image: radial-gradient(#344353 1px, transparent 1px);
  background-size: 16px 16px;
  position: relative;
}
.preview-canvas img {
  width: 100%;
  display: block;
}
.preview-tag {
  position: absolute;
  left: 30px;
  bottom: 25px;
  color: #b8dcf0;
  background: #233d50;
  border: 1px solid #4a7187;
  border-radius: 5px;
  font: 10px monospace;
  padding: 7px 10px;
}
.preview-track {
  padding: 18px;
  font-size: 10px;
  color: #a9b6c8;
  display: flex;
  align-items: center;
  gap: 20px;
}
.preview-track div {
  height: 17px;
  border: 1px solid #668596;
  background: #314e61;
  flex: 1;
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 7px;
  color: #a3e0ff;
  font-size: 8px;
}
.benefits {
  max-width: 1140px;
  margin: 0 auto;
  border-top: 1px solid #2b3543;
  border-bottom: 1px solid #2b3543;
  padding: 24px 0;
  display: flex;
  justify-content: space-around;
  font-size: 12px;
  color: #b6c3d3;
}
.benefits span b {
  color: #9be8ff;
  margin-right: 8px;
}
.section {
  max-width: 1200px;
  margin: auto;
  padding: 65px 30px;
}
.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 25px;
}
.section h2 {
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -1px;
  margin: 12px 0;
}
.section-title p {
  color: #9eacbf;
  font-size: 13px;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  border: 1px solid #2e3a48;
  border-radius: 9px;
  overflow: hidden;
  background: #171f2b;
  transition: border-color 0.2s;
}
.card:hover {
  border-color: #80b0c5;
}
.card img {
  width: 100%;
  height: 215px;
  display: block;
  background: radial-gradient(ellipse at center, #202e40, transparent);
}
.card div {
  padding: 20px;
  border-top: 1px solid #2a3543;
}
.card h3 {
  font-size: 15px;
  font-weight: 500;
  margin: 0 0 8px;
}
.card p {
  font-size: 12px;
  color: #9baac0;
  margin: 0;
}
.card h3 span {
  float: right;
  color: #a5e5fc;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 45px;
}
.steps b {
  font: 12px monospace;
  color: #9be8ff;
}
.steps h3 {
  font-size: 17px;
  font-weight: 500;
}
.steps p {
  font-size: 13px;
  color: #a4b1c2;
  line-height: 1.8;
}
.learning {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px;
  border: 1px solid #3b4a5a;
  border-radius: 10px;
  background: #1b2736;
  gap: 25px;
}
.learning p {
  font-size: 13px;
  color: #a4b1c2;
  line-height: 1.8;
}
.learning h2 {
  font-size: 24px;
}
.learning a {
  white-space: nowrap;
}
footer {
  border-top: 1px solid #2b3543;
  font-size: 11px;
  color: #91a0b4;
  max-width: 1140px;
  padding-left: 0;
  padding-right: 0;
}
footer div {
  display: flex;
  gap: 20px;
}
.article {
  max-width: 800px;
  margin: 65px auto;
  padding: 0 30px;
}
.article h1 {
  font-size: 44px;
  letter-spacing: -1.7px;
}
.article h2 {
  font-size: 24px;
  margin-top: 40px;
  font-weight: 550;
}
.article p,
.article li {
  font-size: 16px;
  line-height: 1.85;
  color: #afbdcf;
}
.article pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: #192432;
  border: 1px solid #344557;
  border-radius: 8px;
  padding: 20px;
  font-size: 13px;
  line-height: 1.8;
}
.article a {
  color: #9be8ff;
}
.article .breadcrumb {
  font-size: 12px;
  color: #96a8bf;
}
.article .guide-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  border-top: 1px solid #344557;
  margin-top: 50px;
  padding-top: 25px;
}
.article aside {
  border-left: 3px solid #9be8ff;
  padding: 5px 20px;
  margin: 30px 0;
  background: #192735;
}
button {
  font: inherit;
}
.easing-demo {
  height: 85px;
  background: #192735;
  border: 1px solid #344557;
  border-radius: 8px;
  margin: 20px 0;
  padding: 25px;
  overflow: hidden;
}
.easing-demo span {
  display: block;
  width: 30px;
  height: 30px;
  background: #9be8ff;
  border-radius: 50%;
}
.easing-demo.running span {
  animation: slide 2s ease-in-out 2 alternate;
}
@keyframes slide {
  to {
    transform: translateX(300px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .easing-demo.running span {
    animation: none;
  }
}
@media (max-width: 760px) {
  header,
  footer {
    padding: 20px;
  }
  nav {
    gap: 15px;
  }
  nav > a:first-child {
    display: none;
  }
  .hero {
    grid-template-columns: 1fr;
    padding: 45px 25px;
    gap: 35px;
  }
  h1 {
    font-size: 48px;
  }
  .preview {
    max-width: 500px;
    width: 100%;
    margin: auto;
  }
  .benefits {
    margin: 0 20px;
    flex-wrap: wrap;
    gap: 20px;
    padding: 25px 10px;
  }
  .cards {
    grid-template-columns: 1fr;
  }
  .card img {
    height: 220px;
  }
  .section {
    padding: 40px 25px;
  }
  .section-title {
    display: block;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .learning {
    display: block;
    padding: 25px;
  }
  .learning a {
    margin-top: 10px;
  }
  footer {
    flex-wrap: wrap;
  }
  .article {
    margin: 35px auto;
  }
  .article h1 {
    font-size: 34px;
  }
  .article p,
  .article li {
    font-size: 15px;
  }
  .hero-actions {
    flex-wrap: wrap;
  }
}
.article button,
.article select {
  font: inherit;
  font-size: 13px;
  color: #dfeaf6;
  background: #25374a;
  border: 1px solid #5d7790;
  padding: 8px 12px;
  border-radius: 5px;
  cursor: pointer;
}
.article button:focus-visible,
.article select:focus-visible {
  outline: 2px solid #9be8ff;
  outline-offset: 3px;
}