/* ===== IOAI Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--ioai-bg);
  color: var(--ioai-text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--ioai-primary); text-decoration: none; }
a:hover { color: var(--ioai-primary-dark); text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; color: var(--ioai-text); letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; }
h3 { font-size: 1.3rem; font-weight: 700; }
h4 { font-size: 1.05rem; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { padding-left: 1.4em; margin: 0 0 1em; }
li { margin: 0.25em 0; }
strong { font-weight: 700; }
hr { border: 0; border-top: 1px solid var(--ioai-border); margin: 2.5rem 0; }
code { font-family: var(--font-mono); font-size: 0.92em; background: var(--ioai-bg-soft); padding: 0.1em 0.4em; border-radius: 4px; }
pre { background: #0f172a; color: #e5e7eb; padding: 1rem 1.25rem; border-radius: var(--radius); overflow-x: auto; margin: 0 0 1.25em; font-size: 0.92rem; line-height: 1.55; }
pre code { background: none; padding: 0; color: inherit; }
table { width: 100%; border-collapse: collapse; margin: 0 0 1.5em; font-size: 0.96rem; }
th, td { text-align: left; padding: 0.7em 0.9em; border-bottom: 1px solid var(--ioai-border); vertical-align: top; }
th { background: var(--ioai-primary-soft); color: var(--ioai-primary-dark); font-weight: 700; }
tbody tr:nth-child(even) { background: var(--ioai-bg-soft); }
.table-wrap { overflow-x: auto; margin: 0 0 1.5em; }
.table-wrap table { margin: 0; min-width: 560px; }
blockquote { border-left: 4px solid var(--ioai-primary); background: var(--ioai-primary-soft); padding: 1rem 1.25rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 0 0 1.5em; }
blockquote p:last-child { margin: 0; }

.container { max-width: var(--container); margin: 0 auto; width: 100%; padding: 0 24px; }
.container--narrow { max-width: 820px; }
section { position: relative; padding: 72px 0; }
section.section--soft { background: var(--ioai-bg-soft); }
section.section--band { background: var(--ioai-bg-band); color: var(--ioai-text-on-dark); }
section.section--band h2, section.section--band h3, section.section--band p { color: var(--ioai-text-on-dark); }
section.section--band .card h2, section.section--band .card h3, section.section--band .card p { color: var(--ioai-text); }  /* white cards keep dark body text on a dark band */
section.section--tight { padding: 40px 0; }

.eyebrow { display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ioai-primary); margin-bottom: 0.6rem; }
.section-head { max-width: 760px; margin-bottom: 2.2rem; }
.section-head p { color: var(--ioai-text-secondary); font-size: 1.08rem; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.muted { color: var(--ioai-text-muted); }
.small { font-size: 0.9rem; }
.text-center { text-align: center; }

/* skip link + focus */
.skip-link { position: absolute; left: -999px; top: 0; background: var(--ioai-primary); color: #fff; padding: 0.5rem 1rem; z-index: 10000; }
.skip-link:focus { left: 8px; top: 8px; }
:focus-visible { outline: 3px solid var(--ioai-gold); outline-offset: 2px; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  section { padding: 52px 0; }
  .container { padding: 0 18px; }
}