:root {
  --info:#5B8DEF; --info-soft:rgba(91,141,239,.10);
  --warning:#FFA940; --warning-soft:rgba(255,169,64,.10);
  --danger:#FF5973; --danger-soft:rgba(255,89,115,.10);
  --radius-sm:6px; --radius-md:10px; --radius-lg:14px; --radius-xl:18px;
}
/* LIGHT — холодный с лёгким сине-фиолетовым подтоном (не кремовый муvpn, не плоский белый) */
:root, :root[data-theme="light"] {
  --bg-base: hsl(225, 30%, 97%);
  --bg-surface: #FFFFFF;
  --bg-raised: #FFFFFF;
  --bg-sidebar: hsl(225, 28%, 95%);
  --bg-hover: hsla(225, 30%, 50%, .06);
  --border-subtle: hsla(225, 25%, 30%, .07);
  --border-default: hsla(225, 25%, 30%, .12);
  --border-strong: hsla(225, 25%, 30%, .20);
  --text-primary: hsl(225, 30%, 11%);
  --text-secondary: hsl(225, 18%, 32%);
  --text-tertiary: hsl(225, 15%, 45%);
  --text-muted: hsl(225, 12%, 58%);
  --text-disabled: hsl(225, 12%, 72%);

  --accent: hsl(243, 78%, 55%);
  --accent-text: #FFFFFF;
  --accent-soft: hsla(243, 78%, 55%, .10);
  --accent-2: hsl(192, 86%, 45%);
  --gradient-primary: linear-gradient(135deg, hsl(243, 78%, 55%) 0%, hsl(265, 72%, 58%) 100%);
  --gradient-accent: linear-gradient(135deg, hsl(192, 86%, 50%) 0%, hsl(243, 78%, 55%) 100%);
  --hero-glow: radial-gradient(ellipse 70% 50% at 50% 0%, hsla(243, 78%, 55%, .15) 0%, transparent 70%);
}
/* DARK — глубокий синий-чёрный, неоновый циан-индиго */
:root[data-theme="dark"] {
  --bg-base: hsl(225, 32%, 7%);
  --bg-surface: hsl(225, 28%, 10%);
  --bg-raised: hsl(225, 25%, 14%);
  --bg-sidebar: hsl(225, 30%, 6%);
  --bg-hover: hsla(225, 100%, 80%, .04);
  --border-subtle: hsla(225, 30%, 70%, .06);
  --border-default: hsla(225, 30%, 70%, .10);
  --border-strong: hsla(225, 30%, 70%, .18);
  --text-primary: hsl(225, 25%, 98%);
  --text-secondary: hsl(225, 15%, 70%);
  --text-tertiary: hsl(225, 12%, 55%);
  --text-muted: hsl(225, 10%, 42%);
  --text-disabled: hsl(225, 10%, 30%);

  --accent: hsl(195, 95%, 62%);
  --accent-text: hsl(225, 50%, 6%);
  --accent-soft: hsla(195, 95%, 62%, .12);
  --accent-2: hsl(245, 90%, 70%);
  --gradient-primary: linear-gradient(135deg, hsl(195, 95%, 62%) 0%, hsl(245, 90%, 70%) 100%);
  --gradient-accent: linear-gradient(135deg, hsl(195, 95%, 62%) 0%, hsl(265, 80%, 70%) 100%);
  --hero-glow: radial-gradient(ellipse 70% 50% at 50% 0%, hsla(245, 90%, 60%, .22) 0%, transparent 70%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --bg-base: hsl(225, 32%, 7%);
    --bg-surface: hsl(225, 28%, 10%);
    --bg-raised: hsl(225, 25%, 14%);
    --bg-sidebar: hsl(225, 30%, 6%);
    --bg-hover: hsla(225, 100%, 80%, .04);
    --border-subtle: hsla(225, 30%, 70%, .06);
    --border-default: hsla(225, 30%, 70%, .10);
    --border-strong: hsla(225, 30%, 70%, .18);
    --text-primary: hsl(225, 25%, 98%);
    --text-secondary: hsl(225, 15%, 70%);
    --text-tertiary: hsl(225, 12%, 55%);
    --text-muted: hsl(225, 10%, 42%);
    --text-disabled: hsl(225, 10%, 30%);
    --accent: hsl(195, 95%, 62%);
    --accent-text: hsl(225, 50%, 6%);
    --accent-soft: hsla(195, 95%, 62%, .12);
    --accent-2: hsl(245, 90%, 70%);
    --gradient-primary: linear-gradient(135deg, hsl(195, 95%, 62%) 0%, hsl(245, 90%, 70%) 100%);
    --gradient-accent: linear-gradient(135deg, hsl(195, 95%, 62%) 0%, hsl(265, 80%, 70%) 100%);
    --hero-glow: radial-gradient(ellipse 70% 50% at 50% 0%, hsla(245, 90%, 60%, .22) 0%, transparent 70%);
  }
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: "Inter Tight", system-ui, -apple-system, sans-serif;
  font-feature-settings: "cv11","ss01","ss03","tnum";
  background: var(--bg-base);
  color: var(--text-primary);
  transition: background 200ms ease, color 200ms ease;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}
body::before {
  content:""; position: fixed; inset: 0; pointer-events: none;
  background: var(--hero-glow); z-index: 0;
}
.mono { font-family: "JetBrains Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums; }
.wrap { max-width: 960px; margin: 0 auto; padding: 72px 24px 96px; position: relative; z-index: 1; }
.eyebrow {
  font-family:"JetBrains Mono",monospace; font-size:10px; letter-spacing:.18em;
  text-transform:uppercase; color:var(--text-muted); font-weight:500;
  display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before { content:""; width:24px; height:1px; background: var(--accent); opacity:.6; }
h1 {
  font-size: clamp(44px, 7.5vw, 76px); font-weight: 800; letter-spacing: -0.03em;
  line-height: 1.02; margin-top: 18px;
}
h1 .grad {
  background: var(--gradient-primary); -webkit-background-clip: text;
  background-clip: text; color: transparent; padding-right: 4px;
}
.lede { color: var(--text-secondary); font-size: 19px; line-height: 1.55; max-width: 580px; margin-top: 20px; }
.toolbar { position: fixed; top: 18px; right: 18px; display:flex; gap:8px; z-index: 10; }
.btn {
  font: inherit; font-size: 13.5px; font-weight: 500;
  padding: 10px 18px; border-radius: var(--radius-md); border:1px solid var(--border-default);
  background: var(--bg-surface); color: var(--text-primary); cursor: pointer;
  transition: all 150ms ease;
}
.btn:hover { border-color: var(--border-strong); background: var(--bg-hover); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-accent {
  background: var(--gradient-primary); color: var(--accent-text);
  border-color: transparent; font-weight: 600;
  box-shadow: 0 4px 24px hsla(243, 78%, 55%, .25);
}
:root[data-theme="dark"] .btn-accent { box-shadow: 0 4px 32px hsla(245, 90%, 60%, .35); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .btn-accent { box-shadow: 0 4px 32px hsla(245, 90%, 60%, .35); }
}
.btn-accent:hover { filter: brightness(1.08); transform: translateY(-1px); }
.row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 32px; }
.cards { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap:14px; margin-top:56px; }
.card {
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); padding: 22px;
  transition: transform 200ms ease, border-color 200ms ease;
}
.card:hover { transform: translateY(-2px); border-color: var(--border-default); }
.card .label {
  font-size: 10.5px; color: var(--text-tertiary); text-transform: uppercase;
  letter-spacing: .14em; font-weight: 600;
}
.card .value {
  font-family:"JetBrains Mono",monospace; font-size: 30px; font-weight: 700;
  margin-top: 8px; letter-spacing: -0.02em;
}
.card .value .grad {
  background: var(--gradient-accent); -webkit-background-clip: text;
  background-clip: text; color: transparent;
}
.swatch-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(140px,1fr)); gap:10px; margin-top:24px; }
.swatch { border-radius:var(--radius-md); border:1px solid var(--border-subtle); overflow:hidden; background: var(--bg-surface); }
.swatch .chip { height:60px; }
.swatch .meta { padding:10px 12px; font-size:11px; color:var(--text-tertiary); font-family:"JetBrains Mono",monospace; }
.dot {
  display:inline-block; width:7px; height:7px; border-radius:9999px;
  background:var(--accent); margin-right:8px; vertical-align:middle;
  animation: pulse 2s ease-in-out infinite;
  box-shadow: 0 0 12px var(--accent);
}
@keyframes pulse { 0%,100% {opacity:1; transform:scale(1);} 50% {opacity:.5; transform:scale(.85);} }
hr { border:0; border-top:1px solid var(--border-subtle); margin: 56px 0 32px; }