:root {
  /* USX Cyber — softened light palette (no harsh blacks, gentler contrast) */
  --color-ink: #1a2332;
  --color-ink-2: #2a3a4d;
  --color-ink-muted: #5b6d80;
  --color-line: #dfe6ec;
  --color-line-strong: #c2cbd6;
  --color-bg: #f4f6f8;
  --color-bg-soft: #eef2f5;
  --color-bg-panel: #ffffff;
  --color-surface: #ffffff;
  --color-brand: #1e3a5f;
  --color-brand-strong: #152a47;
  --color-brand-deep: #0f2238;
  --color-accent: #2eb89a;
  --color-accent-strong: #22a084;
  --color-accent-soft: #e0f5ef;
  --color-success: #2d7a4f;
  --color-success-soft: #e2efe6;
  --color-warn: #9a6a15;
  --color-warn-soft: #f7ecd1;
  --color-danger: #a43333;
  --color-danger-soft: #f3dedc;
  --color-focus: #2eb89a;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --shadow-1: 0 1px 2px rgba(15, 34, 56, .06), 0 1px 1px rgba(15, 34, 56, .04);
  --shadow-2: 0 6px 20px rgba(15, 34, 56, .08), 0 2px 6px rgba(15, 34, 56, .05);
  --shadow-3: 0 18px 50px rgba(15, 34, 56, .14), 0 4px 12px rgba(15, 34, 56, .06);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  --font-sans: "Barlow", "Inter", "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Barlow Condensed", "Barlow", "Inter", "Segoe UI", Roboto, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --fs-xs: 12px;
  --fs-sm: 13.5px;
  --fs-base: 15px;
  --fs-md: 17px;
  --fs-lg: 20px;
  --fs-xl: 24px;
  --fs-2xl: 30px;
  --fs-3xl: 38px;
  --fs-4xl: 48px;
  --fs-5xl: 60px;

  --lh-tight: 1.15;
  --lh-snug: 1.3;
  --lh-normal: 1.55;

  --ease-out: cubic-bezier(.2, .7, .25, 1);
  --ease-in-out: cubic-bezier(.6, .05, .4, .95);
}

*, *::before, *::after { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--color-ink);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-main { flex: 1 1 auto; }

a {
  color: var(--color-accent-strong);
  text-decoration: none;
  transition: color 120ms var(--ease-out);
}
a:hover { color: var(--color-brand-strong); }
a:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; border-radius: 2px; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  color: var(--color-ink);
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-3);
  letter-spacing: -0.005em;
  font-weight: 700;
}
h1 { font-size: var(--fs-4xl); font-weight: 800; letter-spacing: -0.015em; text-transform: none; }
h2 { font-size: var(--fs-2xl); font-weight: 800; letter-spacing: -0.01em; }
h3 { font-size: var(--fs-lg); font-weight: 700; }
h4 { font-size: var(--fs-md); font-weight: 700; }

p { margin: 0 0 var(--space-4); }
ul, ol { margin: 0 0 var(--space-4); padding-left: 1.2em; }
li { margin-bottom: var(--space-2); }

.muted { color: var(--color-ink-muted); }
.small { font-size: var(--fs-sm); }
.xsmall { font-size: var(--fs-xs); letter-spacing: .04em; text-transform: uppercase; color: var(--color-ink-muted); }

hr {
  border: 0;
  border-top: 1px solid var(--color-line);
  margin: var(--space-6) 0;
}

button { font-family: inherit; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  position: fixed;
  top: 12px;
  left: 12px;
  background: var(--color-brand);
  color: #fff;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  width: auto;
  height: auto;
  z-index: 1000;
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}