/* ============================================
   Base · Reset · Typography Utilities
   ============================================ */

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-strong);
  font-family: var(--font-sans);
  font-feature-settings: 'ss18' 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  line-height: var(--lh-normal);
}

.landing-layout {
  overflow-x: hidden;
}

.landing-v3 {
  min-width: 0;
}

img { display: block; max-width: 100%; height: auto; }
button, a { font-family: inherit; }

/* ============================================
   Layout Container
   ============================================ */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 480px) {
  .container,
  .container-narrow {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

/* ============================================
   Typography helpers (variable-based, no magic sizes)
   ============================================ */

.t-eyebrow {
  font-size: var(--fs-body);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--brand-primary-500);
}

.t-h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-black);
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-snug);
  color: var(--text-strong);
  margin: 0;
}

.t-display {
  font-size: var(--fs-display);
  font-weight: var(--fw-heavy);
  line-height: 1.05;
  letter-spacing: var(--tracking-tight);
  color: var(--text-strong);
  margin: 0;
}

.t-h2 {
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  line-height: 1.2;
  letter-spacing: var(--tracking-snug);
  color: var(--text-strong);
  margin: 0;
}

.t-h3 {
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
  line-height: 1.3;
  letter-spacing: var(--tracking-normal);
  margin: 0;
}

.t-lead {
  font-size: var(--fs-lg);
  font-weight: var(--fw-medium);
  line-height: 1.55;
  color: var(--text-body);
}

.t-body {
  font-size: var(--fs-body);
  color: var(--text-body);
  line-height: 1.6;
}

.t-sm {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--text-secondary);
}

.t-xs {
  font-size: var(--fs-xs);
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ============================================
   Yellow highlight (배경 하이라이팅)
   ============================================ */
.highlight-yellow {
  background: linear-gradient(180deg, transparent 55%, var(--brand-accent-500) 55%);
  padding-right: 6px;
}
.highlight-yellow-lg {
  background: linear-gradient(180deg, transparent 60%, var(--brand-accent-500) 60%);
  padding-right: 8px;
}

/* ============================================
   Text wrap
   ============================================ */
.tw-balance { text-wrap: balance; }
.tw-pretty  { text-wrap: pretty; word-break: keep-all; }