/* 기본 스타일: 초기화 · 글자 · 레이아웃 */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.65;
  overflow-x: hidden;
  word-break: keep-all; /* 한국어를 단어 단위로 줄바꿈 */
  overflow-wrap: break-word;
}

:lang(vi) {
  font-family: var(--font-vi);
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--indigo-3);
}

a:hover {
  color: var(--indigo-4);
}

:focus-visible {
  outline: 2px solid var(--indigo-3);
  outline-offset: 3px;
  border-radius: 4px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  letter-spacing: -0.015em;
  text-wrap: balance;
}

p {
  margin: 0;
}

.h1 {
  font-size: var(--fs-display);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.h2 {
  font-size: var(--fs-h2);
  line-height: 1.22;
  font-weight: 800;
}

.h3 {
  font-size: var(--fs-h3);
  line-height: 1.4;
  font-weight: 700;
}

.lead {
  font-size: var(--fs-lead);
  color: var(--text-2);
  max-width: 40em;
}

.muted {
  color: var(--muted);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
}

.accent-indigo {
  color: var(--indigo-3);
}

.accent-orange {
  color: var(--orange-text-dark);
}

.accent-gradient {
  background: linear-gradient(90deg, var(--indigo-2), var(--indigo-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 레이아웃 */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--space-8);
  border-top: 1px solid rgba(140, 165, 230, 0.12);
}

.section--alt {
  background: var(--bg-alt);
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 760px;
  margin-bottom: var(--space-7);
}

.section-head--center {
  align-items: center;
  text-align: center;
  margin-inline: auto;
}

.grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

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

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -48px;
  z-index: 100;
  background: var(--orange);
  color: var(--on-orange);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-s);
  font-weight: 700;
  text-decoration: none;
}

.skip-link:focus {
  top: var(--space-4);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}