:root {
  color-scheme: light;
  --paper: #f3f1ec;
  --sheet: #fffcf7;
  --ink: #1c1917;
  --mute: #57534e;
  --rule: #d6d3d1;
  --mark: #3f4f5a;
  --mark-ink: #f8fafc;
  --focus: #1d4e89;
}

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  word-break: keep-all;
}

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

:focus {
  outline: none;
}

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

:target,
:focus-visible {
  scroll-margin-top: 88px;
}

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  background: var(--ink);
  color: var(--sheet);
  padding: 8px 12px;
  z-index: 50;
}

.skip:focus {
  top: 12px;
}

.bar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 22px;
  background: rgb(243 241 236 / 0.92);
  border-bottom: 1px solid var(--rule);
}

.mark {
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  color: var(--ink);
  font-size: 13px;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
}

nav a {
  text-decoration: none;
  color: var(--mute);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 600;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 22px 72px;
}

.hero {
  padding: 56px 0 28px;
  max-width: 38rem;
}

.kicker {
  margin: 0 0 10px;
  color: var(--mute);
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.25;
  letter-spacing: -0.03em;
  font-weight: 650;
}

.lead {
  margin: 0;
  color: var(--mute);
  font-size: 1.05rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.cta,
.ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  text-decoration: none;
  border-radius: 2px;
  font-weight: 600;
}

.cta {
  background: var(--mark);
  color: var(--mark-ink);
}

.ghost {
  border: 1px solid var(--ink);
  color: var(--ink);
}

.ledger {
  display: grid;
  gap: 0;
  margin: 36px 0 0;
  border-top: 1px solid var(--ink);
}

.row {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}

.row dt {
  margin: 0;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--mute);
}

.row dd {
  margin: 0;
}

.split {
  display: grid;
  gap: 16px;
  margin-top: 40px;
}

@media (min-width: 760px) {
  .split {
    grid-template-columns: 1fr 1fr;
  }
}

.panel {
  background: var(--sheet);
  border: 1px solid var(--rule);
  padding: 22px 22px 8px;
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

.panel ul {
  margin: 0 0 16px;
  padding-left: 1.1rem;
}

.note {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  color: var(--mute);
  font-size: 0.95rem;
}

footer {
  border-top: 1px solid var(--rule);
  padding: 22px;
  color: var(--mute);
  font-size: 0.9rem;
}

footer p {
  margin: 0 0 6px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 640px) {
  .row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}