:root {
  color-scheme: dark;
  --bg: #0d1014; --panel: #161a20; --panel-2: #1e242c; --line: #2b323c;
  --text: #e6e9ee; --muted: #a3acb9; --accent: #5ec4b6; --accent-ink: #06211d;
  --accent-2: #8fa8ff; --warn: #e8a15f; --danger: #f08a7b;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: #86dccf; }
:focus-visible { outline: 3px solid var(--accent-2); outline-offset: 2px; border-radius: 4px; }
.inner { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--panel-2); padding: 8px 12px; border-radius: 6px; z-index: 10; }
.skip:focus { left: 8px; }

.top { border-bottom: 1px solid var(--line); }
.top .inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 20px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; text-decoration: none; }
.brand img { display: block; border-radius: 7px; }
.top nav { display: flex; align-items: center; gap: 18px; font-size: 15px; }
.top nav a:not(.btn) { color: var(--muted); text-decoration: none; }
.top nav a:not(.btn):hover, .top nav a[aria-current] { color: var(--text); }

.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); font-weight: 600; padding: 12px 20px; border-radius: 8px; text-decoration: none; border: 1px solid var(--accent); }
.btn:hover { background: #86dccf; border-color: #86dccf; color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn.ghost:hover { background: var(--panel-2); color: var(--text); border-color: var(--line); }
.btn.small { padding: 7px 13px; font-size: 14px; color: var(--accent-ink); }

h1, h2, h3 { line-height: 1.2; font-weight: 600; margin: 0; }
strong { font-weight: 600; }
.hero { padding: 56px 0 48px; }
.hero .inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(36px, 5.2vw, 56px); letter-spacing: -.02em; }
.lede { font-size: 19px; color: #c5ccd6; margin: 18px 0 0; }
.spectrum { width: 100%; height: auto; display: block; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.fine { font-size: 14px; color: var(--muted); margin: 14px 0 0; }

.callout { background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--accent-2); border-radius: 8px; padding: 16px 18px; margin-top: 22px; }
.callout p { margin: 6px 0 0; }
.callout h3 { font-size: 17px; }
.callout ul { margin: 10px 0 0; padding-left: 20px; }
.callout li + li { margin-top: 6px; }
.callout.warn { border-left-color: var(--warn); }
.callout.danger { border-left-color: var(--danger); }

.band { padding: 44px 0; border-top: 1px solid var(--line); }
.band h2 { font-size: 28px; letter-spacing: -.01em; }
.band ul { padding-left: 22px; }
.band li + li { margin-top: 10px; }
.section-lede { color: #c5ccd6; margin: 12px 0 0; max-width: 720px; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: start; }
.after { margin: 22px 0 0; }
.features { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px 34px; margin-top: 26px; }
.features h3 { font-size: 18px; color: var(--accent); }
.features p { margin: 8px 0 0; color: #c5ccd6; font-size: 16px; }

.doc { padding-top: 40px; padding-bottom: 56px; }
.doc h1 { font-size: 38px; letter-spacing: -.02em; }
.doc h2 { font-size: 23px; margin: 36px 0 10px; scroll-margin-top: 16px; }
.doc ul { padding-left: 22px; }
.doc li + li { margin-top: 8px; }

.bottom { border-top: 1px solid var(--line); padding: 26px 0 32px; font-size: 15px; color: var(--muted); }
.bottom p { margin: 0; }
.links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 12px !important; }

@media (max-width: 860px) {
  .hero { padding: 36px 0; }
  .hero .inner { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .spectrum { order: -1; max-height: 130px; }
  .two { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .features { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .inner { padding: 0 16px; }
  .features { grid-template-columns: minmax(0, 1fr); }
  .actions .btn { flex: 1 1 100%; text-align: center; }
  .top nav { gap: 14px; }
  .doc h1 { font-size: 32px; }
}