:root {
  color-scheme: dark;
  --ink: #f4f7fb;
  --muted: #a7b4c7;
  --deep: #09111f;
  --panel: #101c2d;
  --line: rgba(164, 184, 211, 0.18);
  --blue: #70b7ff;
  --pink: #ff7fae;
  --gold: #ffd166;
  --green: #60dbb2;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: radial-gradient(circle at 78% 4%, #1d3a5f 0, var(--deep) 34rem), var(--deep);
  color: var(--ink);
  font:
    16px/1.65 Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
}
a {
  color: inherit;
}
.site-header,
.section-shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}
.site-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 26px 0;
}
.brand {
  align-items: center;
  display: inline-flex;
  gap: 11px;
  font-size: 1.1rem;
  font-weight: 750;
  letter-spacing: -0.03em;
  text-decoration: none;
}
nav {
  align-items: center;
  display: flex;
  gap: 27px;
}
nav a,
.footer-links a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
}
nav a:hover,
.footer-links a:hover {
  color: var(--ink);
}
.nav-github {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  padding: 7px 14px;
}
.hero {
  align-items: center;
  display: grid;
  gap: 70px;
  grid-template-columns: 1fr 1fr;
  min-height: 630px;
  padding: 70px 0 120px;
}
.eyebrow {
  color: var(--blue);
  font-size: 0.77rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  margin: 0 0 15px;
  text-transform: uppercase;
}
.status-dot {
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 14px var(--green);
  display: inline-block;
  height: 8px;
  margin: 0 7px 1px 0;
  width: 8px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  font-size: clamp(3.2rem, 7vw, 6.2rem);
  letter-spacing: -0.085em;
  line-height: 0.96;
  margin-bottom: 27px;
  max-width: 700px;
}
h1 em {
  color: var(--pink);
  font-style: normal;
}
.hero-text {
  color: var(--muted);
  font-size: 1.18rem;
  max-width: 560px;
}
.hero-actions,
.download-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.button {
  border-radius: 9px;
  display: inline-block;
  font-weight: 750;
  padding: 12px 19px;
  text-decoration: none;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}
.button:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.24);
  transform: translateY(-2px);
}
.button-primary {
  background: var(--pink);
  color: #27101a;
}
.button-secondary {
  border: 1px solid var(--line);
  color: var(--ink);
}
.hero-note {
  color: #75849a;
  font-size: 0.82rem;
  margin-top: 15px;
}
.graph-card {
  background: rgba(12, 23, 39, 0.88);
  border: 1px solid var(--line);
  border-radius: 15px;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
  overflow: hidden;
  transform: rotate(2deg);
}
.graph-card-bar {
  align-items: center;
  background: rgba(255, 255, 255, 0.035);
  border-bottom: 1px solid var(--line);
  color: #74859d;
  display: flex;
  font-size: 0.65rem;
  gap: 6px;
  padding: 12px 17px;
}
.graph-card-bar span {
  background: #ff6b8a;
  border-radius: 50%;
  height: 7px;
  width: 7px;
}
.graph-card-bar span:nth-child(2) {
  background: var(--gold);
}
.graph-card-bar span:nth-child(3) {
  background: var(--green);
}
.graph-card-bar b {
  font-weight: 500;
  margin-left: 7px;
}
.graph-card svg {
  display: block;
  padding: 13px 10px 5px;
  width: 100%;
}
.line {
  fill: none;
  stroke-linecap: round;
  stroke-width: 4;
}
.main-line {
  stroke: var(--pink);
}
.blue-line {
  stroke: var(--blue);
}
.pink-line {
  stroke: #c991ff;
}
.gold-line {
  stroke: var(--gold);
}
.green-line {
  stroke: var(--green);
}
.commit circle {
  fill: var(--panel);
  stroke-width: 4;
}
.commit-main circle {
  stroke: var(--pink);
}
.commit-blue circle {
  stroke: var(--blue);
}
.commit-pink circle {
  stroke: #c991ff;
}
.commit-green circle {
  stroke: var(--green);
}
.graph-card text {
  fill: #b5c1d2;
  font:
    12px ui-sans-serif,
    system-ui,
    sans-serif;
}
.section {
  padding: 95px 0;
}
.section-heading {
  max-width: 650px;
}
.section-heading h2,
.split-copy h2,
.download-inner h2 {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  letter-spacing: -0.07em;
  line-height: 1.03;
  margin-bottom: 18px;
}
.section-heading p,
.split-copy > p {
  color: var(--muted);
  font-size: 1.05rem;
}
.feature-grid {
  display: grid;
  gap: 15px;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 45px;
}
.feature-card {
  background: linear-gradient(145deg, rgba(23, 42, 67, 0.86), rgba(13, 25, 42, 0.75));
  border: 1px solid var(--line);
  border-radius: 13px;
  padding: 25px 22px;
}
.feature-icon {
  color: var(--pink);
  font-size: 1.8rem;
}
.feature-card h3 {
  font-size: 1.08rem;
  margin: 16px 0 8px;
}
.feature-card p {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0;
}
.split-section {
  align-items: center;
  display: grid;
  gap: 75px;
  grid-template-columns: 0.85fr 1.15fr;
}
.check-list {
  color: var(--muted);
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}
.check-list li {
  margin: 12px 0;
}
.check-list li::before {
  color: var(--green);
  content: '✓';
  font-weight: 800;
  margin-right: 12px;
}
.screenshot-frame {
  margin: 0;
}
.screenshot-frame img {
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  display: block;
  width: 100%;
}
.screenshot-frame figcaption {
  color: #75849a;
  font-size: 0.8rem;
  margin-top: 12px;
  text-align: center;
}
.download-section {
  background: linear-gradient(100deg, rgba(40, 70, 105, 0.62), rgba(49, 24, 57, 0.82));
  border-block: 1px solid var(--line);
}
.download-inner {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 72px 0;
}
.download-inner h2 {
  margin-bottom: 10px;
}
.download-inner p:not(.eyebrow) {
  color: var(--muted);
  margin: 0;
}
.text-link {
  color: var(--ink);
  font-size: 0.9rem;
  text-decoration: none;
}
.text-link:hover {
  text-decoration: underline;
}
.site-footer {
  align-items: center;
  color: #74859d;
  display: flex;
  gap: 25px;
  justify-content: space-between;
  padding: 30px 0 40px;
}
.site-footer p {
  font-size: 0.8rem;
  margin: 0;
}
.footer-links {
  display: flex;
  gap: 18px;
}
@media (max-width: 850px) {
  nav a:not(.nav-github) {
    display: none;
  }
  .hero,
  .split-section {
    gap: 45px;
    grid-template-columns: 1fr;
  }
  .hero {
    padding-top: 55px;
  }
  .hero-art {
    max-width: 650px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .download-inner,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 22px;
  }
}
@media (max-width: 520px) {
  .site-header,
  .section-shell {
    width: min(100% - 32px, 1160px);
  }
  .hero {
    min-height: auto;
    padding-bottom: 75px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }
  .button {
    text-align: center;
  }
  .graph-card {
    transform: none;
  }
}