/*
 * 시작용 최소 스타일. 디자인 토큰(:root)부터 교체해 확장한다.
 * 포커스 표시, 대비, 반응형 기본 동작은 디자인을 바꿔도 유지한다.
 */
:root {
  --color-bg: #ffffff;
  --color-text: #1a1a1a;
  --color-muted: #555555;
  --color-accent: #0b5cad;
  --color-border: #e2e2e2;
  --color-focus: #0b5cad;

  --font-sans: system-ui, -apple-system, "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  --container: 72rem;
  --gutter: 1rem;
  --header-h: 4rem;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  word-break: keep-all;
  overflow-wrap: anywhere;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -3rem;
  padding: 0.5rem 1rem;
  background: var(--color-text);
  color: var(--color-bg);
  z-index: 100;
}

.skip-link:focus {
  top: 0.5rem;
}

/* Language suggestion banner */
.lang-suggest {
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 0.875rem;
}

.lang-suggest[hidden] {
  display: none;
}

.lang-suggest__inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 2.75rem;
}

.lang-suggest p {
  margin: 0;
  margin-right: auto;
}

.lang-suggest button {
  min-height: 2.25rem;
  padding: 0 0.75rem;
  border: 1px solid currentColor;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.lang-suggest .lang-suggest__dismiss {
  border: 0;
  font-size: 1.25rem;
  line-height: 1;
}

.lang-suggest :focus-visible {
  outline-color: var(--color-bg);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-h);
}

.site-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: inherit;
  text-decoration: none;
  margin-right: auto;
}

.site-nav__list {
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: inherit;
  text-decoration: none;
}

.site-nav a:hover {
  text-decoration: underline;
}

.lang-switch {
  display: flex;
  gap: 0.25rem;
}

.lang-switch button {
  min-width: 2.75rem;
  min-height: 2.75rem;
  border: 1px solid var(--color-border);
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.lang-switch button[aria-pressed="true"] {
  background: var(--color-text);
  color: var(--color-bg);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
}

.nav-toggle__bar,
.nav-toggle__bar::before,
.nav-toggle__bar::after {
  display: block;
  width: 1.25rem;
  height: 2px;
  margin-inline: auto;
  background: var(--color-text);
}

.nav-toggle__bar {
  position: relative;
}

.nav-toggle__bar::before,
.nav-toggle__bar::after {
  content: "";
  position: absolute;
  left: 0;
}

.nav-toggle__bar::before {
  top: -6px;
}

.nav-toggle__bar::after {
  top: 6px;
}

/* Hero */
.hero {
  padding-block: clamp(3rem, 10vw, 8rem);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.2;
}

.hero__lead {
  margin: 0;
  max-width: 40rem;
  color: var(--color-muted);
  font-size: 1.125rem;
}

/* Footer */
.site-footer {
  padding-block: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.875rem;
}

/* Mobile */
@media (max-width: 48rem) {
  .nav-toggle {
    display: block;
    order: 3;
  }

  .site-header__inner {
    flex-wrap: wrap;
  }

  .site-nav {
    display: none;
    order: 4;
    flex-basis: 100%;
    padding-bottom: 1rem;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav__list {
    flex-direction: column;
    gap: 0.75rem;
  }
}

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