/* Base: reset, type scale, buttons, header, sections, footer. Shared by every page. */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 var(--fs-body)/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
img, video, canvas, svg { display: block; max-width: 100%; }
img, video { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
h1, h2, h3, p, ul, ol, dl, figure { margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; padding: 8px 12px; background: var(--ink); color: var(--paper); border-radius: 8px; }
.skip:focus { left: 8px; z-index: 100; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.display { font: 400 var(--fs-display)/1.2 var(--serif); letter-spacing: -0.01em; }
.h2 { font: 400 var(--fs-h2)/1.25 var(--serif); letter-spacing: -0.01em; }
.h3 { font: 400 var(--fs-h3)/1.2 var(--serif); }
.lead { font: 400 var(--fs-lead)/1.45 var(--serif); color: var(--ink-3); max-width: 600px; }
.muted { color: var(--ink-2); }
.eyebrow { font: 500 12px/1 var(--sans); color: var(--ink-3); letter-spacing: 0.02em; }
.num { font-variant-numeric: tabular-nums; }
.tag { padding: 3px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); font: 500 12px/1.4 var(--sans); }
.tbc { display: inline-block; padding: 1px 7px; border: 1px dashed var(--line-2); border-radius: 6px; color: var(--ink-3); font: 500 12px/1.5 var(--sans); vertical-align: 1px; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 36px; padding: 0 14px; border: 0; border-radius: var(--r-btn); font: 500 14px/1 var(--sans); cursor: pointer; transition: background 160ms var(--ease), transform 160ms var(--ease); }
.btn:active { transform: translateY(1px); }
.btn--dark { background: var(--ink); color: var(--on-ink); }
.btn--dark:hover { background: var(--ink-2); }
.btn--tint { background: var(--tint); color: var(--ink); }
.btn--tint:hover { background: var(--tint-2); }
.btn--sm { min-height: 36px; padding: 0 14px; font-size: 14px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; }

/* Header: plain on paper, blurs once the page scrolls. */
.nav { position: sticky; top: 0; z-index: 50; height: var(--nav-h); background: var(--paper); border-bottom: 1px solid transparent; transition: background 200ms var(--ease), border-color 200ms var(--ease); }
.nav.is-scrolled { background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: blur(12px); border-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 100%; }
.logo { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-width: 44px; min-height: 44px; color: var(--ink); }
.logo svg { width: 26px; height: 26px; }
.nav__links { display: flex; flex: 1; align-items: center; gap: 4px; }
.nav__links a { display: inline-flex; align-items: center; min-height: 36px; padding: 0 14px; border-radius: 999px; font: 500 14px/1 var(--sans); color: var(--ink); }
.nav__links a:first-child { margin-left: auto; }
.nav__links a:nth-child(2) { margin-right: auto; }
.nav__links a:hover, .nav__links a[aria-current="page"] { background: var(--tint); }
.theme { display: grid; place-items: center; width: 36px; height: 36px; margin-left: 4px; border: 0; border-radius: 999px; background: none; color: var(--ink-2); cursor: pointer; }
.theme:hover { background: var(--tint); color: var(--ink); }

/* Flat sections split by hairlines, as on afterquery.com; no grey bands. */
.section { padding: 72px 0; }
.section--grey { border-top: 1px solid var(--line); }
.section__head { display: grid; gap: 12px; max-width: 640px; margin-bottom: 32px; }

/* Light footer: logo, link columns, policies and year, as on afterquery.com. */
.footer { padding: 64px 0 72px; border-top: 1px solid var(--line); }
.footer__row { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)) auto; gap: 32px; align-items: start; }
.footer .logo { justify-content: flex-start; }
.footer__col { display: grid; gap: 10px; color: var(--ink-2); font-size: 14px; }
.footer__col h2 { margin-bottom: 4px; color: var(--ink); font: 500 14px/1.3 var(--sans); }
.footer__col a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.footer__copy { color: var(--ink-3); font-size: 13px; }

@media (max-width: 860px) {
  .theme { width: 44px; height: 44px; margin-left: 0; }
  .nav__inner { gap: 8px; }
  .nav__links a { min-height: 44px; padding: 0 12px; }
  .section { padding: 72px 0; }
  .btn, .btn--sm { min-height: 44px; }
  .footer__row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer .logo, .footer__copy { grid-column: 1 / -1; }
  .footer__col { gap: 0; }
  .footer__col a, .footer__col > span { display: inline-flex; align-items: center; min-height: 44px; }
  .section__head { margin-bottom: 32px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}