:root {
  --bg: #0b1020;
  --bg-soft: #111735;
  --text: #e7e9f1;
  --muted: #aab0c0;
  --primary: #9aa5ff;
  --accent: #a6e3e9;
  --danger: #ff6b6b;
  --success: #56d364;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
  --link: #aeb6ff;
  --link-hover: #c7ceff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, #1a1f3a, transparent),
              radial-gradient(1000px 500px at 110% 10%, #12162e, transparent),
              var(--bg);
  line-height: 1.6;
}

/* Global links */
a { color: var(--link); text-decoration: none; }
a:hover { color: var(--link-hover); }
a:focus-visible { outline: 2px solid var(--link-hover); outline-offset: 2px; border-radius: 4px; }

.container { width: min(1100px, 92%); margin: 0 auto; }

header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(9, 12, 24, 0.8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.nav a.brand { font-weight: 700; letter-spacing: 0.4px; color: var(--text); text-decoration: none; }
.nav ul { list-style: none; display: flex; gap: 18px; margin: 0; padding: 0; }
.nav a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.nav a.active, .nav a:hover { color: var(--text); background: rgba(255,255,255,0.06); }

.main {
  padding: 34px 0 80px;
}

.hero {
  padding: 80px 0 40px;
}
.hero h1 { font-size: clamp(28px, 4vw, 44px); margin: 0 0 10px; }
.hero p.kicker { color: var(--muted); margin: 0 0 22px; }
.ctas { display: flex; gap: 12px; flex-wrap: wrap; }
.btn { appearance: none; border: 1px solid rgba(255,255,255,0.12); background: rgba(255,255,255,0.04); color: var(--text); padding: 10px 14px; border-radius: 10px; cursor: pointer; text-decoration: none; }
.btn.primary { background: linear-gradient(135deg, var(--primary), #7b89ff); color: #0b0f1e; border: none; }
.btn:hover { filter: brightness(1.08); }

.grid { display: grid; gap: 18px; }
.grid.cards { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 18px; box-shadow: var(--shadow); }
.card h3 { margin-top: 0; }
.card p { color: var(--muted); }

footer { border-top: 1px solid rgba(255,255,255,0.08); padding: 24px 0; color: var(--muted); }
.small { font-size: 0.92rem; color: var(--muted); }
.muted { color: var(--muted); }

.section-title { display: flex; align-items: baseline; justify-content: space-between; }
.section-title h2 { margin: 0; font-size: 1.6rem; }

.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.select, select, input[type="range"], input[type="number"] {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  padding: 8px 10px; border-radius: 10px;
}
label { color: var(--muted); font-size: 0.95rem; }

.chart {
  width: 100%;
  height: 420px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 12px;
}
.chart .caption { color: var(--muted); font-size: 0.9rem; margin-top: 6px; }

kbd { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.15); padding: 2px 6px; border-radius: 6px; font-size: 0.85rem; }

.toggle {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 8px 10px; border-radius: 999px;
}

.notice {
  background: linear-gradient(135deg, rgba(154,165,255,0.15), rgba(166,227,233,0.12));
  border: 1px solid rgba(154,165,255,0.35);
  color: var(--text);
  border-radius: 12px;
  padding: 14px 16px;
}

ul.clean { list-style: none; padding-left: 0; }
ul.clean li { margin: 8px 0; }

@media (prefers-reduced-motion: no-preference) {
  .pulse { animation: pulse 4s ease-in-out infinite; }
  @keyframes pulse { 0%{ transform: translateY(0); } 50%{ transform: translateY(-2px);} 100%{ transform: translateY(0);} }
}