:root {
  color-scheme: dark;
  --bg: #07101e;
  --bg-soft: #0b1729;
  --bg-soft-2: #0d1b2e;
  --surface: rgba(17, 31, 52, 0.84);
  --surface-strong: #101f35;
  --line: rgba(147, 176, 211, 0.18);
  --line-strong: rgba(147, 176, 211, 0.3);
  --text: #eef5ff;
  --muted: #a7b8cc;
  --accent: #55e6d2;
  --accent-2: #7aa2ff;
  --accent-ink: #05211d;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.28);
  --shadow-card: 0 14px 36px rgba(0, 0, 0, 0.18);
  --radius: 18px;
  --radius-lg: 24px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 82px; }
body {
  margin: 0;
  min-width: 280px;
  background:
    radial-gradient(circle at 15% -5%, rgba(85, 230, 210, 0.13), transparent 30rem),
    radial-gradient(circle at 90% 10%, rgba(122, 162, 255, 0.12), transparent 34rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
a:hover { color: var(--accent); }
img { display: block; max-width: 100%; height: auto; }
code, pre, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

.skip-link {
  position: fixed; left: 1rem; top: -5rem; z-index: 100;
  padding: .75rem 1rem; background: var(--accent); color: var(--accent-ink);
  border-radius: 10px; font-weight: 800;
}
.skip-link:focus { top: 1rem; }

.container { width: min(calc(100% - 2rem), var(--max)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 16, 30, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: inline-flex; align-items: center; text-decoration: none; flex: 0 0 auto; }
.brand-logo img { width: 220px; height: auto; max-height: 58px; object-fit: contain; }
.nav-links { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a { color: var(--muted); text-decoration: none; font-size: .9rem; font-weight: 700; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--text); }

.hero { padding: 7rem 0 4.8rem; }
.hero-grid { display: grid; grid-template-columns: 1.3fr .82fr; gap: 3.5rem; align-items: center; }
.eyebrow { color: var(--accent); font-size: .8rem; font-weight: 850; letter-spacing: .16em; text-transform: uppercase; }
h1 { margin: .65rem 0 1.2rem; font-size: clamp(3.2rem, 8vw, 6.8rem); line-height: .92; letter-spacing: -.06em; }
.hero h1 span { display: block; max-width: 42rem; font-size: .31em; line-height: 1.35; margin-top: .65rem; letter-spacing: -.015em; color: var(--muted); font-weight: 600; }
.lead { max-width: 46rem; font-size: clamp(1.05rem, 2vw, 1.24rem); color: #c3d1e2; }
.actions { display: flex; flex-wrap: wrap; gap: .75rem; margin: 2rem 0 1.35rem; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 46px; padding: .72rem 1rem; border: 1px solid var(--line); border-radius: 11px; text-decoration: none; font-weight: 800; background: var(--surface); }
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button.secondary:hover { background: var(--surface-strong); }
.hero-note { color: var(--muted); font-size: .9rem; }

.release-panel { padding: 1.5rem; background: linear-gradient(145deg, rgba(20, 42, 67, .95), rgba(13, 26, 45, .93)); border: 1px solid var(--line-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.release-logo-wrap { padding: .25rem 0 1.25rem; border-bottom: 1px solid var(--line); }
.release-logo-wrap img { width: 230px; height: auto; }
.release-panel .mark { display: flex; align-items: center; gap: 1rem; margin: 1.25rem 0 .3rem; }
.release-panel h2 { margin: .25rem 0 0; font-size: 1.35rem; }
.status { display: inline-flex; align-items: center; gap: .45rem; color: #c9fff5; font-weight: 800; font-size: .84rem; }
.status::before { content: ""; width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 5px rgba(85,230,210,.1); }
.release-meta { display: grid; grid-template-columns: auto 1fr; gap: .55rem 1rem; margin: 1.3rem 0; font-size: .9rem; }
.release-meta dt { color: var(--muted); }
.release-meta dd { margin: 0; text-align: right; font-weight: 700; overflow-wrap: anywhere; }
.panel-button { width: 100%; }
.release-shortcuts { display: flex; flex-wrap: wrap; gap: .7rem 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.release-shortcuts a { color: #c9d8ea; font-size: .82rem; font-weight: 750; text-decoration: none; }

.section { padding: 5.2rem 0; border-top: 1px solid var(--line); }
.section-soft { background: linear-gradient(180deg, rgba(11, 23, 41, .48), rgba(11, 23, 41, .72)); }
.section-head { max-width: 46rem; margin-bottom: 2.2rem; }
.section-head.centered { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.wide { max-width: 56rem; }
.section h2 { margin: .4rem 0 .8rem; font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -.035em; line-height: 1.1; }
.section-intro { color: var(--muted); font-size: 1.04rem; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.card { padding: 1.4rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.card h3 { margin: 0 0 .5rem; font-size: 1.08rem; }
.card p { margin: 0; color: var(--muted); }
.card .tag { display: inline-block; margin-bottom: .8rem; padding: .2rem .55rem; color: var(--accent); background: rgba(85,230,210,.08); border: 1px solid rgba(85,230,210,.2); border-radius: 999px; font-size: .73rem; font-weight: 850; letter-spacing: .06em; text-transform: uppercase; }

.install { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.codebox { position: relative; padding: 1.2rem; background: #050b14; border: 1px solid var(--line); border-radius: 14px; overflow-x: auto; box-shadow: var(--shadow-card); }
.codebox pre { margin: 0; font-size: .88rem; color: #dce9f9; white-space: pre-wrap; word-break: break-word; }
.code-label { display: block; color: var(--accent); margin-bottom: .75rem; font-size: .76rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }

.plot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.plot-card { margin: 0; overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.plot-image { background: #fff; padding: .55rem; }
.plot-image img { width: 100%; }
.plot-card figcaption { display: grid; gap: .35rem; padding: 1.2rem 1.25rem 1.3rem; color: var(--muted); font-size: .9rem; }
.plot-card figcaption strong { color: var(--text); font-size: 1rem; }

.repro-card { overflow: hidden; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.table-scroll { overflow-x: auto; }
.repro-table { width: 100%; min-width: 760px; border-collapse: collapse; }
.repro-table th, .repro-table td { padding: 1rem 1.05rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.repro-table thead th { color: #dce9f8; background: rgba(7,16,30,.55); font-size: .78rem; letter-spacing: .07em; text-transform: uppercase; }
.repro-table tbody th { width: 62px; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }
.repro-table tbody td:nth-child(2) { width: 29%; font-weight: 750; color: #e5eef9; }
.repro-table tbody td:last-child { color: var(--muted); }
.repro-footer { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; padding: 1.2rem 1.3rem; background: rgba(7,16,30,.35); }
.repro-footer p { margin: 0; color: var(--muted); font-size: .9rem; }
.repro-footer .button { flex: 0 0 auto; }

.architecture { display: grid; grid-template-columns: .9fr 1.1fr; gap: 2rem; align-items: center; }
.architecture figure { margin: 0; padding: .75rem; background: #f8fbff; border-radius: var(--radius); border: 1px solid var(--line); box-shadow: var(--shadow); }
.architecture figcaption { color: #43536a; font-size: .8rem; padding: .5rem .35rem 0; }
.mini-card-list { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; margin-top: 1.4rem; }
.mini-card-list article { padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.mini-card-list strong { display: block; margin-bottom: .3rem; font-size: .92rem; }
.mini-card-list p { margin: 0; color: var(--muted); font-size: .86rem; }

.resource-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.resource { text-decoration: none; transition: transform .15s ease, border-color .15s ease; }
.resource:hover { transform: translateY(-2px); border-color: rgba(85,230,210,.45); color: inherit; }
.resource .arrow { color: var(--accent); font-weight: 900; }

.publications { display: grid; gap: .8rem; max-width: 960px; margin-inline: auto; }
.publication { display: grid; grid-template-columns: 6rem 1fr auto; gap: 1.2rem; align-items: start; padding: 1.2rem 1.3rem; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-card); }
.publication .year { color: var(--accent); font-weight: 850; }
.publication h3 { margin: 0 0 .3rem; font-size: 1rem; }
.publication p { margin: 0; color: var(--muted); font-size: .9rem; }
.publication a { white-space: nowrap; font-weight: 800; text-decoration: none; }

.team { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.person { position: relative; padding: 1.45rem; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow-card); }
.person .initials { display: grid; place-items: center; width: 50px; height: 50px; margin-bottom: .85rem; border-radius: 14px; background: linear-gradient(135deg, rgba(85,230,210,.18), rgba(122,162,255,.18)); color: var(--text); font-weight: 900; }
.person h3 { margin: .25rem 0 0; }
.person p { margin: .45rem 0 0; color: var(--muted); font-size: .9rem; }
.role-badge { display: inline-block; padding: .2rem .5rem; color: var(--accent); background: rgba(85,230,210,.08); border: 1px solid rgba(85,230,210,.2); border-radius: 999px; font-size: .7rem; font-weight: 850; text-transform: uppercase; letter-spacing: .05em; }
.lead-person { border-color: rgba(85,230,210,.38); background: linear-gradient(145deg, rgba(20,42,67,.92), rgba(15,33,54,.88)); }

.license-box { display: grid; grid-template-columns: 1.25fr .75fr; gap: 2rem; padding: 1.8rem; border: 1px solid rgba(85,230,210,.3); background: linear-gradient(135deg, rgba(85,230,210,.07), rgba(122,162,255,.06)); border-radius: 20px; box-shadow: var(--shadow-card); }
.license-box h3 { margin-top: .45rem; }
.license-box p { color: #c7d6e7; }
.license-links { display: grid; gap: .65rem; align-content: center; }
.license-links a { font-weight: 800; text-decoration: none; }

.site-footer { padding: 2.5rem 0 3.5rem; border-top: 1px solid var(--line); color: var(--muted); }
.footer-grid { display: flex; justify-content: space-between; align-items: center; gap: 2rem; flex-wrap: wrap; }
.footer-brand-block { display: flex; align-items: center; gap: 1.2rem; }
.footer-brand-block img { width: 178px; height: auto; }
.footer-grid p { margin: 0; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a { text-decoration: none; }
.small { font-size: .84rem; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

@media (max-width: 980px) {
  .hero-grid, .architecture, .license-box { grid-template-columns: 1fr; }
  .hero { padding-top: 4.8rem; }
  .release-panel { max-width: 38rem; }
  .grid-3, .resource-grid { grid-template-columns: repeat(2, 1fr); }
  .plot-grid { grid-template-columns: 1fr; }
  .publication { grid-template-columns: 5rem 1fr; }
  .publication a { grid-column: 2; }
  .repro-footer { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 760px) {
  .nav { align-items: flex-start; padding: .8rem 0; flex-direction: column; gap: .8rem; }
  .brand-logo img { width: min(240px, 80vw); max-height: none; }
  .nav-links { justify-content: flex-start; gap: .55rem .9rem; }
  .nav-links a { font-size: .82rem; }
  .grid-3, .grid-2, .resource-grid, .install, .team, .mini-card-list { grid-template-columns: 1fr; }
  .publication { grid-template-columns: 1fr; gap: .4rem; }
  .publication a { grid-column: 1; }
  h1 { font-size: clamp(3rem, 18vw, 4.5rem); }
  .footer-brand-block { align-items: flex-start; flex-direction: column; }
}

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


/* v1.0.9 — cache-busted header logo and Quick Start components */

/* Header: a genuinely horizontal logo slot. No square box, no fixed height. */
.nav {
  display: grid;
  grid-template-columns: minmax(300px, 370px) minmax(0, 1fr);
  gap: 1.5rem;
  min-height: 104px;
  align-items: center;
}
.brand-logo {
  display: block;
  width: 100%;
  min-width: 0;
  line-height: 0;
  text-decoration: none;
}
.brand-logo img {
  display: block;
  width: 100% !important;
  height: auto !important;
  min-width: 0;
  max-width: none !important;
  max-height: none !important;
  aspect-ratio: 1726 / 455;
  object-fit: contain;
  object-position: left center;
  background: transparent;
}
.release-logo-wrap img {
  display: block;
  width: min(100%, 330px);
  height: auto !important;
  max-height: none !important;
  object-fit: contain;
  background: transparent;
}
.footer-brand-block img {
  display: block;
  width: 225px;
  height: auto !important;
  max-height: none !important;
  object-fit: contain;
  background: transparent;
}
.nav-links {
  min-width: 0;
  gap: .65rem 1rem;
}
.nav-links a { font-size: .84rem; }

/* Quick Start shell */
.quickstart-section {
  background:
    radial-gradient(circle at 5% 0%, rgba(85,230,210,.08), transparent 30rem),
    radial-gradient(circle at 95% 8%, rgba(122,162,255,.08), transparent 32rem),
    linear-gradient(180deg, #0a1627, #07101e);
}
.quickstart-flow {
  display: grid;
  gap: 1.5rem;
}
.qs-stage {
  overflow: hidden;
  background: linear-gradient(145deg, rgba(18,36,60,.96), rgba(9,20,35,.98));
  border: 1px solid rgba(147,176,211,.28);
  border-radius: 24px;
  box-shadow: 0 22px 55px rgba(0,0,0,.24);
}
.qs-stage-header {
  display: grid;
  grid-template-columns: 58px minmax(0,1fr);
  gap: 1rem;
  align-items: center;
  padding: 1.35rem 1.45rem;
  background: linear-gradient(90deg, rgba(85,230,210,.08), rgba(122,162,255,.035));
  border-bottom: 1px solid rgba(147,176,211,.2);
}
.qs-stage-number {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 15px;
  color: #05211d;
  background: linear-gradient(135deg, #55e6d2, #94f5e8);
  box-shadow: 0 10px 28px rgba(85,230,210,.18);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .8rem;
  font-weight: 950;
}
.qs-stage-kicker {
  display: block;
  color: #55e6d2;
  font-size: .69rem;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.qs-stage-header h3 {
  margin: .16rem 0 .28rem;
  font-size: clamp(1.14rem, 2vw, 1.38rem);
  line-height: 1.25;
}
.qs-stage-header p {
  max-width: 58rem;
  margin: 0;
  color: #a7b8cc;
  font-size: .91rem;
}

/* Installation cards */
.qs-setup-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 1rem;
  padding: 1.2rem;
}
.qs-setup-card {
  min-width: 0;
  overflow: hidden;
  background: rgba(5,12,22,.72);
  border: 1px solid rgba(147,176,211,.2);
  border-radius: 18px;
  box-shadow: 0 12px 30px rgba(0,0,0,.16);
}
.qs-card-heading {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: 1.05rem 1.1rem .72rem;
}
.qs-card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.4rem;
  height: 2.55rem;
  padding: 0 .65rem;
  border-radius: 11px;
  color: #dffff9;
  background: linear-gradient(135deg, rgba(85,230,210,.19), rgba(122,162,255,.18));
  border: 1px solid rgba(85,230,210,.25);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .02em;
}
.qs-card-label {
  display: block;
  color: #55e6d2;
  font-size: .67rem;
  font-weight: 900;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.qs-card-heading h4 {
  margin: .12rem 0 0;
  color: #eef5ff;
  font-size: 1.04rem;
}
.qs-setup-card > p {
  margin: 0;
  padding: 0 1.1rem 1rem;
  color: #a7b8cc;
  font-size: .88rem;
}
.qs-usecase {
  display: grid;
  grid-template-columns: auto minmax(0,1fr);
  gap: .75rem;
  align-items: start;
  padding: .78rem 1rem;
  background: rgba(17,34,58,.5);
  border-top: 1px solid rgba(147,176,211,.18);
  color: #cbd9e9;
  font-size: .77rem;
}
.qs-usecase span {
  color: #55e6d2;
  font-weight: 900;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.qs-setup-wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(260px,.72fr) minmax(0,1.28fr);
  gap: 1rem;
  padding: 1.05rem;
}
.qs-setup-wide .qs-card-heading { padding: 0 0 .8rem; }
.qs-setup-wide .qs-wide-copy > p { margin: 0 0 1rem; color: #a7b8cc; font-size: .9rem; }
.qs-requirements {
  padding: .85rem .9rem;
  border: 1px solid rgba(147,176,211,.18);
  border-radius: 12px;
  background: rgba(17,34,58,.5);
}
.qs-requirements span {
  display: block;
  margin-bottom: .22rem;
  color: #55e6d2;
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.qs-requirements strong { font-size: .84rem; }

/* Terminal and code panels */
.qs-terminal,
.qs-command-card,
.qs-code-card {
  min-width: 0;
  overflow: hidden;
  background: #030910;
  border: 1px solid rgba(147,176,211,.19);
  border-radius: 14px;
}
.qs-setup-card:not(.qs-setup-wide) .qs-terminal { margin: 0 .8rem .8rem; }
.qs-terminal-bar,
.qs-command-card > header,
.qs-code-card > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.7rem;
  padding: .65rem .85rem;
  background: #10243b;
  border-bottom: 1px solid rgba(147,176,211,.19);
}
.qs-terminal-bar span,
.qs-command-card header span,
.language-badge {
  color: #55e6d2;
  font-size: .68rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.qs-terminal-bar b,
.qs-code-card > header code {
  color: #92a7c0;
  font-size: .7rem;
  letter-spacing: .035em;
}
.qs-terminal pre,
.qs-command-card pre,
.qs-code-card pre {
  margin: 0;
  padding: 1rem;
  overflow-x: auto;
  color: #dce9f9;
  font-size: .78rem;
  line-height: 1.62;
  tab-size: 4;
}
.qs-terminal code,
.qs-command-card code,
.qs-code-card code { white-space: pre; }
.qs-code-card > footer {
  padding: .68rem .9rem;
  color: #aabbd0;
  background: rgba(17,34,58,.58);
  border-top: 1px solid rgba(147,176,211,.18);
  font-size: .77rem;
}

/* Verification, API and CMake layouts */
.qs-command-grid,
.qs-api-grid,
.qs-cmake-grid {
  display: grid;
  gap: 1rem;
  padding: 1.2rem;
}
.qs-command-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.qs-api-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
.qs-cmake-grid { grid-template-columns: .72fr 1.28fr; }
.qs-command-card header {
  display: grid;
  justify-content: initial;
  gap: .15rem;
  align-items: start;
}
.qs-command-card header strong { color: #eef5ff; font-size: .88rem; }
.qs-cmake-notes { display: grid; gap: .9rem; align-content: start; }
.qs-note-card {
  padding: 1rem;
  border: 1px solid rgba(147,176,211,.2);
  border-radius: 14px;
  background: rgba(5,12,22,.68);
}
.qs-note-card > span {
  display: block;
  color: #55e6d2;
  font-size: .69rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.qs-note-card > strong { display: block; margin: .3rem 0 .45rem; }
.qs-note-card p { margin: 0; color: #a7b8cc; font-size: .87rem; }

.quickstart-links {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: .55rem .75rem;
  padding: 1rem 1.15rem;
  background: rgba(17,34,58,.65);
  border: 1px solid rgba(147,176,211,.2);
  border-radius: 16px;
}
.quickstart-links strong { color: #eef5ff; margin-right: .25rem; }
.quickstart-links a {
  display: inline-flex;
  padding: .42rem .7rem;
  color: #d9e6f6;
  background: rgba(5,12,22,.58);
  border: 1px solid rgba(147,176,211,.2);
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 800;
  text-decoration: none;
}
.quickstart-links a:hover { color: #55e6d2; border-color: rgba(85,230,210,.4); }

@media (max-width: 1040px) {
  .nav { grid-template-columns: minmax(270px, 320px) minmax(0,1fr); }
  .nav-links { gap: .55rem .75rem; }
  .nav-links a { font-size: .79rem; }
}
@media (max-width: 900px) {
  .nav { grid-template-columns: 1fr; gap: .8rem; padding: .85rem 0; }
  .brand-logo { width: min(390px, 90vw); }
  .nav-links { justify-content: flex-start; }
  .qs-setup-grid,
  .qs-command-grid,
  .qs-api-grid,
  .qs-cmake-grid { grid-template-columns: 1fr; }
  .qs-setup-wide { grid-column: auto; grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .qs-stage { border-radius: 18px; }
  .qs-stage-header { grid-template-columns: 1fr; padding: 1.05rem; }
  .qs-stage-number { width: 46px; height: 46px; }
  .qs-setup-grid,
  .qs-command-grid,
  .qs-api-grid,
  .qs-cmake-grid { padding: .85rem; }
  .qs-terminal pre,
  .qs-command-card pre,
  .qs-code-card pre { font-size: .7rem; }
  .quickstart-links { justify-content: flex-start; }
}