/* AI4BI — shared styling for the static content pages
   (about, faq, workshops, ai-training-kolkata).
   Brand tokens match brand-kit/tokens.css and the existing offering pages. */

:root { --paper:#faf7f2; --ink:#1c1c1c; --coral:#ff561b; --muted:#665f58; --line:rgba(28,28,28,.13); }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); background-color: var(--paper);
  background-image: radial-gradient(rgba(28,28,28,.08) 1px, transparent 1px);
  background-size: 24px 24px; font-family: "Plus Jakarta Sans", sans-serif;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.wrap { width: min(1000px, calc(100% - 40px)); margin: 0 auto; }

.nav {
  position: fixed; z-index: 30; top: 18px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  width: min(920px, calc(100% - 32px)); padding: 9px 10px 9px 22px;
  border: 1px solid rgba(28,28,28,.1); border-radius: 999px;
  background: rgba(255,255,255,.9); box-shadow: 0 18px 45px -26px rgba(0,0,0,.5);
  backdrop-filter: blur(14px);
}
.nav img { width: 100px; height: 36px; object-fit: contain; }
.nav__links { display: flex; align-items: center; gap: 4px; }
.nav__link { padding: 10px 12px; text-decoration: none; font-size: 13px; font-weight: 800; }
@media (max-width: 720px) { .nav__link { display: none; } }

.pill {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; border-radius: 999px; padding: 13px 20px; text-decoration: none;
  font-weight: 800; font-size: 14px; transition: transform .2s ease;
}
.pill:hover { transform: translateY(-2px); }
.pill--coral { color: #fff; background: var(--coral); box-shadow: 0 15px 34px -16px rgba(255,86,27,.9); }
.pill--lg { padding: 16px 26px; font-size: 15px; }

.kicker {
  display: flex; align-items: center; gap: 12px; margin-bottom: 22px;
  font: 500 11px/1 "DM Mono", monospace; letter-spacing: .18em;
  text-transform: uppercase; color: var(--coral);
}
.kicker::before { content: ""; width: 38px; height: 2px; background: currentColor; }

h1, h2, h3, p, ul, ol { margin-top: 0; }
h1 { font-size: clamp(2.6rem, 6vw, 4.6rem); line-height: .96; letter-spacing: -.05em; margin-bottom: 24px; }
h1 em { color: var(--coral); font-style: normal; }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); line-height: 1.06; letter-spacing: -.035em; margin-bottom: 20px; }
h3 { font-size: 1.16rem; letter-spacing: -.02em; margin-bottom: 8px; }
p { line-height: 1.62; margin-bottom: 18px; }
.lede { max-width: 62ch; color: var(--muted); font-size: clamp(1.05rem,1.7vw,1.3rem); line-height: 1.55; font-weight: 500; }

.hero { padding: 150px 0 56px; }
section { padding: 46px 0; border-top: 1px solid var(--line); }
.prose { max-width: 68ch; }
.prose p, .prose li { color: #38332e; }
.prose li { margin-bottom: 10px; line-height: 1.6; }

.grid { display: grid; gap: 18px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 860px) { .grid--4 { grid-template-columns: repeat(2, minmax(0,1fr)); } .grid--3 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 620px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card {
  padding: 24px; border: 1px solid var(--line); border-radius: 20px;
  background: #fff; box-shadow: 0 16px 38px -30px rgba(28,28,28,.5);
}
.card__role { font: 500 10.5px/1 "DM Mono", monospace; letter-spacing: .16em; text-transform: uppercase; color: var(--coral); margin-bottom: 12px; }
.card p { font-size: .95rem; color: var(--muted); margin-bottom: 0; }
.card a { color: var(--coral); font-weight: 700; text-decoration: none; font-size: .9rem; }
.card__price { font-size: 1.5rem; font-weight: 800; letter-spacing: -.03em; margin: 14px 0 0; color: var(--ink); }

.clients { display: flex; flex-wrap: wrap; gap: 9px; padding: 0; margin: 0; list-style: none; }
.clients li {
  padding: 9px 15px; border: 1px solid var(--line); border-radius: 999px;
  background: #fff; font-size: .9rem; font-weight: 600;
}

.note {
  padding: 22px 24px; border-left: 3px solid var(--coral); border-radius: 0 14px 14px 0;
  background: rgba(255,86,27,.055);
}
.note p:last-child { margin-bottom: 0; }

.qa { max-width: 74ch; }
.qa__item { padding: 26px 0; border-top: 1px solid var(--line); }
.qa__item:first-child { border-top: 0; padding-top: 0; }
.qa__q { font-size: 1.28rem; font-weight: 800; letter-spacing: -.025em; margin-bottom: 12px; }
.qa__a { color: #38332e; margin-bottom: 0; }
.qa__a + .qa__a { margin-top: 14px; }

.cta { padding: 56px 0 64px; border-top: 1px solid var(--line); }
.footer { padding: 34px 0 44px; background: var(--ink); color: var(--paper); margin-top: 40px; }
.footer__row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.footer img { width: 104px; height: 38px; object-fit: contain; }
.footer p { margin: 0; font-size: .9rem; opacity: .78; }
.footer a { color: var(--paper); }