/* ============================================================
   CY Autotech — Base (reset + typography + layout primitives)
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
section[id] { scroll-margin-top: 84px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  word-break: keep-all;        /* 한글: 단어(어절) 단위 줄바꿈 */
  overflow-wrap: break-word;
}

img, picture, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; padding: 0; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-heading);
  word-break: keep-all;        /* 한글 어절 단위 */
  text-wrap: balance;          /* 제목 줄 균형(반응형 배열) */
}
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); }
h4 { font-size: var(--fs-h4); line-height: var(--lh-snug); }
p { max-width: 72ch; text-wrap: pretty; }   /* 고아 단어 방지 */

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

::selection { background: var(--color-accent); color: #fff; }

/* --- Layout primitives --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-bg);
  color: var(--color-text);
}
.section--alt { background: var(--color-bg-alt); }
.section--tight { padding-block: var(--space-12); }

/* 12-col grid */
.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-cols), 1fr);
  gap: var(--gutter);
}
@media (max-width: 768px) {
  :root { --container-pad: 16px; --gutter: 16px; }
  .grid { grid-template-columns: repeat(4, 1fr); }
}

/* Section heading block */
.section-head { max-width: 56ch; margin-bottom: var(--space-12); }
.section-head__eyebrow {
  display: inline-block;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.section-head__title { font-size: var(--fs-h2); }
.section-head__lead {
  margin-top: var(--space-4);
  font-size: var(--fs-body-lg);
  color: var(--color-text-muted);
}
.section-head--center { margin-inline: auto; text-align: center; }