:root {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #111827;
  background: #ffffff;
  font-synthesis: none;
  --blue: #245fd7;
  --navy: #101a31;
  --muted: #5f6b7c;
  --line: #dfe3ea;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; color: #111827; }
a { color: inherit; }

.site-header {
  max-width: 1160px;
  height: 78px;
  margin: auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.site-brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.site-brand img { width: 39px; height: 39px; }
.site-brand strong { font-size: 19px; }
.site-header nav { display: flex; gap: 30px; }
.site-header nav a { color: #465165; font-size: 14px; font-weight: 650; text-decoration: none; }
.site-header nav a:hover { color: var(--blue); }

.hero {
  max-width: 1160px;
  min-height: 590px;
  margin: auto;
  padding: 96px 24px 100px;
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 90px;
  align-items: center;
}
.hero h1 {
  max-width: 760px;
  margin: 0;
  color: #0d1528;
  font-size: clamp(48px, 6vw, 76px);
  line-height: .98;
  letter-spacing: -.06em;
}
.hero-copy > p:not(.purchase-note) {
  max-width: 650px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: 19px;
  line-height: 1.65;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 34px 0 24px; }
.button { padding: 13px 18px; border: 1px solid var(--line); border-radius: 5px; font-size: 14px; font-weight: 750; text-decoration: none; }
.button.primary { border-color: var(--blue); background: var(--blue); color: #fff; }
.button.secondary { background: #fff; color: #1f2937; }
.purchase-note { max-width: 650px; margin: 0; color: #566174; font-size: 13px; line-height: 1.6; }
.purchase-note strong { color: #111827; }

.hero-summary { padding-left: 38px; border-left: 1px solid var(--line); }
.hero-summary > img { width: min(230px, 100%); height: 68px; object-fit: contain; object-position: left center; }
.hero-summary h2 { margin: 34px 0 20px; font-size: 18px; }
.hero-summary ul { margin: 0; padding: 0; list-style: none; }
.hero-summary li { padding: 13px 0; border-top: 1px solid var(--line); color: #465165; font-size: 14px; }

.features { max-width: 1160px; margin: auto; padding: 90px 24px 105px; border-top: 1px solid var(--line); }
.features > header { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-bottom: 54px; }
.features h2, .download-section h2 { margin: 0; color: #0d1528; font-size: 38px; letter-spacing: -.04em; }
.features > header p { margin: 0; color: var(--muted); font-size: 16px; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 36px; row-gap: 42px; }
.feature-grid article { padding-top: 18px; border-top: 2px solid #17213a; }
.feature-grid h3 { margin: 0 0 8px; font-size: 17px; }
.feature-grid p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.6; }

.download-section {
  max-width: 1112px;
  margin: 0 auto 100px;
  padding: 54px 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
  background: var(--navy);
  color: #fff;
}
.download-section h2 { color: #fff; }
.download-section p { max-width: 480px; margin: 16px 0 0; color: #b5c0d5; font-size: 14px; line-height: 1.65; }
.download-list { border-top: 1px solid #3b465d; }
.download-list a { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 4px; border-bottom: 1px solid #3b465d; text-decoration: none; }
.download-list strong { font-size: 14px; }
.download-list span { color: #aeb9ce; font-size: 12px; text-align: right; }
.download-list a:hover strong { color: #8fb2ff; }

footer { max-width: 1160px; margin: auto; padding: 30px 24px 50px; display: flex; align-items: center; gap: 24px; border-top: 1px solid var(--line); color: #727d8f; font-size: 12px; }
footer .site-brand { margin-right: auto; }
footer .site-brand img { width: 30px; height: 30px; }
footer .site-brand strong { color: #111827; font-size: 15px; }

@media (max-width: 850px) {
  .hero { min-height: 0; grid-template-columns: 1fr; gap: 55px; padding-top: 70px; }
  .hero-summary { padding-left: 0; padding-top: 35px; border-left: 0; border-top: 1px solid var(--line); }
  .features > header, .download-section { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .download-section { margin-left: 16px; margin-right: 16px; gap: 35px; }
}

@media (max-width: 560px) {
  .site-header nav a:first-child { display: none; }
  .site-header nav { gap: 18px; }
  .hero { padding-top: 55px; padding-bottom: 75px; }
  .hero h1 { font-size: 46px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { text-align: center; }
  .features { padding-top: 70px; }
  .features > header { margin-bottom: 40px; }
  .feature-grid { grid-template-columns: 1fr; }
  .download-section { padding: 40px 26px; }
  footer { align-items: flex-start; flex-wrap: wrap; }
  footer > p { width: 100%; order: 3; }
}