:root {
  color-scheme: only light;
  --ink: #172033;
  --muted: #697386;
  --line: #e3e8f0;
  --surface: #ffffff;
  --soft: #f5f7fa;
  --blue: #2367e8;
  --blue-dark: #174eb8;
  --blue-soft: #edf4ff;
  --green: #15805d;
  --green-soft: #eaf8f3;
  --orange: #a85a0a;
  --orange-soft: #fff3e6;
  --shadow: 0 16px 50px rgba(30, 49, 82, .09);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--surface); line-height: 1.65; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }
a:focus-visible, summary:focus-visible { outline: 3px solid rgba(35, 103, 232, .3); outline-offset: 4px; border-radius: 6px; }

.site-header, main, footer { width: min(1120px, calc(100% - 48px)); margin-inline: auto; }
main { padding-top: 24px; }

.hero { position: relative; overflow: hidden; min-height: 400px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: 64px clamp(28px, 7vw, 80px); border-radius: 30px; background: #10244d; color: white; isolation: isolate; }
.hero::before, .hero::after { content: ""; position: absolute; z-index: -1; border-radius: 50%; filter: blur(4px); }
.hero::before { width: 430px; height: 430px; right: -80px; top: -220px; background: radial-gradient(circle, rgba(50, 130, 255, .65), rgba(50, 130, 255, 0) 68%); }
.hero::after { width: 360px; height: 360px; right: 100px; bottom: -270px; background: radial-gradient(circle, rgba(40, 214, 169, .38), rgba(40, 214, 169, 0) 70%); }
.eyebrow { margin-bottom: 18px; color: #a9c7ff; font-size: .78rem; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.hero h1 { max-width: 700px; margin: 0; font-size: clamp(2.35rem, 6vw, 4.6rem); line-height: 1.02; letter-spacing: -.055em; }
.hero h1 > span { display: block; }
.hero-title-line { white-space: nowrap; letter-spacing: 0; }
.hero-wordmark { display: block; width: auto; height: .72em; margin-top: .12em; filter: grayscale(1) brightness(0) invert(1); }
.hero p { max-width: 620px; margin: 24px 0 30px; color: #d4deef; font-size: clamp(1rem, 2vw, 1.18rem); }
.primary-action { display: inline-flex; gap: 14px; align-items: center; padding: 13px 18px; border-radius: 11px; color: #10244d; background: white; font-weight: 750; transition: transform .2s, box-shadow .2s; }
.primary-action:hover { color: #10244d; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0, 0, 0, .18); }

.section { padding: 94px 0 0; }
.section-heading { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: end; margin-bottom: 30px; }
.section-heading > div { display: flex; align-items: baseline; gap: 14px; }
.section-number { color: var(--blue); font-size: .72rem; font-weight: 800; letter-spacing: .1em; }
.section h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.55rem); line-height: 1.15; letter-spacing: -.035em; }
.section-heading > p { max-width: 480px; margin: 0; color: var(--muted); }

.resource-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.resource-card { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; min-height: 112px; padding: 22px; border: 1px solid var(--line); border-radius: 17px; color: var(--ink); background: var(--surface); transition: transform .2s, border-color .2s, box-shadow .2s; }
.resource-card:hover { color: var(--ink); transform: translateY(-3px); border-color: #bbcae4; box-shadow: var(--shadow); }
.card-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 13px; color: var(--blue); background: var(--blue-soft); font: 750 .78rem ui-monospace, SFMono-Regular, Menlo, monospace; }
.resource-card strong, .resource-card small { display: block; }
.resource-card strong { font-size: 1rem; }
.resource-card small { margin-top: 3px; color: var(--muted); }
.arrow { color: #8d9ab0; font-size: 1.2rem; }

.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.model-card {
  display: block;
  min-height: 138px;
  padding: 20px;
  border: 1px solid transparent;
  border-radius: 16px;
  background: var(--soft);
  color: var(--ink);
  text-decoration: none;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.model-card:hover {
  transform: translateY(-3px);
  border-color: #bbcae4;
  box-shadow: var(--shadow);
}
.model-card:focus-visible {
  transform: translateY(-3px);
  border-color: #bbcae4;
  box-shadow: var(--shadow);
  outline: 3px solid rgba(37, 99, 235, .22);
  outline-offset: 3px;
}
.model-card h3 { margin: 0 0 14px; font-size: 1rem; }
.model-card p { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; }
.model-card code { padding: 4px 8px; border: 1px solid #d9e0eb; border-radius: 7px; color: #3a465a; background: white; font-size: .73rem; }

.releases { padding-bottom: 92px; }
.release-list { display: grid; gap: 12px; }
.release-card, .release-archive { padding: 24px 26px; border: 1px solid var(--line); border-radius: 17px; }
.release-card { display: grid; grid-template-columns: 220px 1fr; gap: 20px; align-items: start; }
.release-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.release-meta strong { font-size: 1.08rem; }
.badge, .fix { display: inline-flex; width: fit-content; padding: 4px 8px; border-radius: 6px; font-size: .68rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
.candidate .badge { color: var(--orange); background: var(--orange-soft); }
.current { border-color: #b9e1d2; background: linear-gradient(90deg, var(--green-soft), white 42%); }
.current .badge, .fix { color: var(--green); background: var(--green-soft); }
.release-card ul, .release-archive ul { margin: 0; padding-left: 21px; }
.release-archive summary { display: flex; justify-content: space-between; align-items: center; cursor: pointer; font-weight: 750; }
.release-archive summary small { color: var(--blue); font-weight: 650; }
.release-archive[open] summary { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.release-archive ul { margin-top: 20px; color: #465268; }
.release-archive li + li { margin-top: 7px; }

footer { display: flex; justify-content: space-between; padding: 28px 0 36px; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }

@media (max-width: 760px) {
  .site-header, main, footer { width: min(100% - 28px, 1120px); }
  .hero { min-height: 430px; padding: 44px 24px; border-radius: 21px; }
  .section { padding-top: 70px; }
  .section-heading { grid-template-columns: 1fr; gap: 12px; }
  .resource-grid, .model-grid { grid-template-columns: 1fr; }
  .release-card { grid-template-columns: 1fr; gap: 14px; }
  .release-archive summary { align-items: flex-start; gap: 12px; }
  .release-archive summary small { text-align: right; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}