/* ==========================================================================
   CNK İSG — Temel: reset, tipografi, yerleşim
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  font-family: var(--f-body);
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--c-body);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.is-locked { overflow: hidden; }
[hidden] { display: none !important; }

img, svg, video { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
p { max-width: 68ch; }

h1, h2, h3, h4 {
  font-family: var(--f-display);
  color: var(--c-ink);
  font-weight: 500;
  line-height: var(--lh-snug);
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1 { font-size: var(--fs-hero); line-height: var(--lh-tight); letter-spacing: -0.03em; font-weight: 400; }
h2 { font-size: var(--fs-2xl); line-height: 1.1; letter-spacing: -0.02em; font-weight: 400; }
h3 { font-size: var(--fs-lg); }
h4 { font-size: var(--fs-md); }

.lead { font-size: var(--fs-md); max-width: 58ch; }
.muted { color: var(--c-muted); }
.small { font-size: var(--fs-sm); }
.tiny { font-size: var(--fs-xs); }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 6px;
}
::selection { background: var(--c-glow); color: var(--c-ink); }

.skip-link {
  position: absolute; left: var(--s-4); top: -64px; z-index: 300;
  background: var(--c-ink); color: #fff; padding: var(--s-2) var(--s-4);
  border-radius: var(--r-sm); transition: top var(--t-fast) var(--ease);
}
.skip-link:focus { top: var(--s-4); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Yerleşim */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section { padding-block: var(--s-9); }
.section--alt { background: var(--c-bg-alt); }

.section-head { display: grid; gap: var(--s-4); margin-bottom: var(--s-7); max-width: 720px; }
.section-head p { font-size: var(--fs-md); }
.section-head--split { max-width: none; align-items: end; }
@media (min-width: 900px) {
  .section-head--split { grid-template-columns: 1.1fr 1fr; gap: var(--s-7); }
}
.kicker {
  font-size: var(--fs-sm);
  color: var(--c-accent-deep);
  font-weight: 600;
}