:root {
  --bg: #ffffff;
  --text: #151515;
  --muted: #7a7a7a;
  --line: #e7e7e7;
  --sidebar: 300px;
  --content-max: 760px;
  --title-font: "Manrope", "Noto Sans KR", sans-serif;
  --body-font: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--body-font); }
a { color: inherit; text-decoration: none; }
.mobile-nav-toggle, .mobile-nav-backdrop { display: none; }
.site-shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar { border-right: 1px solid var(--line); }
.sidebar__inner { position: sticky; top: 0; padding: 40px 42px 48px; }
.brand { display: inline-block; margin-bottom: 42px; font-family: var(--title-font); font-size: 2.1rem; font-weight: 700; line-height: 1; letter-spacing: -0.04em; }
.nav__section + .nav__section { margin-top: 28px; }
.nav__title { display: inline-block; margin-bottom: 12px; font-family: var(--title-font); font-size: 0.95rem; font-weight: 800; letter-spacing: -0.02em; color: var(--muted); }
.nav__title.is-current, .nav__item.is-current { color: var(--text); }
.nav__list { margin: 0; padding: 0; list-style: none; }
.nav__list li + li { margin-top: 10px; }
.nav__item { color: var(--muted); font-family: var(--title-font); font-size: 0.94rem; font-weight: 500; line-height: 1.4; }
.content { padding: 40px 64px 72px; }
.page { max-width: var(--content-max); }
.page-header { margin-bottom: 34px; }
.eyebrow { margin: 0 0 12px; color: var(--muted); font-family: var(--title-font); font-size: 0.92rem; font-weight: 700; letter-spacing: -0.01em; }
.page-header h1 { margin: 0; font-family: var(--title-font); font-size: 3.1rem; font-weight: 700; line-height: 1.02; letter-spacing: -0.055em; }
.hero-copy { margin-bottom: 42px; padding-bottom: 28px; border-bottom: 1px solid var(--line); }
.hero-copy p { margin: 0 0 14px; font-size: 0.95rem; line-height: 1.85; }
.hero-copy p:last-child { margin-bottom: 0; }
.identity { margin-top: 20px; color: var(--muted); }
.identity p { margin: 0 0 5px; font-size: 0.88rem; line-height: 1.7; }
.section-block { margin-top: 34px; padding-top: 26px; border-top: 1px solid var(--line); }
.section-block h2 { margin: 0 0 14px; font-family: var(--title-font); font-size: 1rem; font-weight: 700; letter-spacing: -0.02em; }
.section-block p, .section-block li { font-size: 0.92rem; line-height: 1.85; }
.section-block ul, .section-block ol { margin: 0; padding-left: 18px; }
.section-block li + li { margin-top: 6px; }
.category-table { width: 100%; border-collapse: collapse; }
.category-table th, .category-table td { padding: 16px 0; border-top: 1px solid var(--line); vertical-align: top; text-align: left; }
.category-table th { font-family: var(--title-font); font-size: 0.95rem; }
.category-table td { font-size: 0.92rem; line-height: 1.8; }
.back-to-top, .site-footer { margin-top: 34px; color: var(--muted); font-size: 0.85rem; }
@media (max-width: 960px) {
  .mobile-nav-toggle { position: fixed; top: 22px; right: 22px; z-index: 20; display: flex; width: 44px; height: 44px; border: 0; background: transparent; flex-direction: column; justify-content: center; gap: 5px; padding: 0; cursor: pointer; }
  .mobile-nav-toggle span { display: block; width: 22px; height: 2px; margin-left: auto; background: var(--text); }
  .mobile-nav-backdrop { position: fixed; inset: 0; z-index: 10; background: rgba(0, 0, 0, 0.16); }
  .site-shell { display: block; }
  .sidebar { position: fixed; inset: 0 auto 0 0; z-index: 15; width: min(82vw, 320px); background: #fff; transform: translateX(-100%); transition: transform 180ms ease; }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open .mobile-nav-backdrop { display: block; }
  .content { padding: 96px 24px 56px; }
  .sidebar__inner { height: 100vh; overflow: auto; padding: 28px 24px 40px; }
  .page-header h1 { font-size: 2.35rem; }
}