*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-primary);
}

h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.35;
  color: var(--text-primary);
}

h1 { font-size: var(--text-3xl); margin-bottom: var(--space-4); }
h2 { font-size: var(--text-2xl); margin-top: var(--space-7); margin-bottom: var(--space-3); }
h3 { font-size: var(--text-xl); margin-top: var(--space-6); margin-bottom: var(--space-3); }
h4 { font-size: var(--text-lg); margin-top: var(--space-5); margin-bottom: var(--space-2); }

p { margin-bottom: var(--space-4); max-width: 600px; }

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--border);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--duration-fast) var(--ease-default);
}
a:hover { text-decoration-color: var(--text-primary); }
a:focus-visible { outline: 2px solid var(--text-primary); outline-offset: 2px; }

strong { font-weight: 600; }
em { font-style: italic; }

code {
  font-family: var(--font-code);
  font-size: 0.875em;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 3px;
  color: var(--text-primary);
}

pre { margin-bottom: var(--space-5); }
pre code { background: none; padding: 0; font-size: 14px; border: none; }

ul, ol { padding-left: var(--space-5); margin-bottom: var(--space-4); }
li { margin-bottom: var(--space-2); }
li::marker { color: var(--text-tertiary); }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-6) 0;
}

img { max-width: 100%; height: auto; }

::selection {
  background: rgba(26, 26, 26, 0.1);
  color: var(--text-primary);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--text-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: 4px;
  z-index: 1000;
  font-size: var(--text-sm);
  text-decoration: none;
}
.skip-link:focus { top: var(--space-2); }

.lead { font-size: var(--text-lg); color: var(--text-secondary); line-height: 1.6; max-width: 480px; }

.badge {
  display: inline-block;
  font-family: var(--font-code);
  font-size: var(--text-xs);
  padding: 3px 9px;
  border-radius: 5px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.55), rgba(255,255,255,0.25)) padding-box,
    linear-gradient(135deg, rgba(192,57,43,0.4), rgba(212,132,26,0.35), rgba(184,134,11,0.3), rgba(45,134,89,0.35), rgba(43,108,176,0.4), rgba(123,75,179,0.4)) border-box;
  color: var(--text-primary);
  font-weight: 600;
  border: 1.5px solid transparent;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

@media (max-width: 768px) {
  html { font-size: 15px; }
  h1 { font-size: var(--text-2xl); }
  h2 { font-size: var(--text-xl); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}