:root {
  color-scheme: light dark;
  --navy: #121f33;
  --navy-soft: #193a57;
  --mint: #33c29e;
  --mint-ink: #087557;
  --blue: #3370f2;
  --cream: #f7f4eb;
  --ink: #162236;
  --muted: #617083;
  --line: #dce5e5;
  --surface: #ffffff;
  --background: #f4f7f6;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--background); }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0%, rgba(51, 194, 158, .15), transparent 28rem),
    radial-gradient(circle at 100% 12%, rgba(51, 112, 242, .10), transparent 30rem),
    var(--background);
  font-size: 17px;
  line-height: 1.72;
  word-break: keep-all;
}

a { color: #2458c7; text-underline-offset: .2em; }
a:focus-visible, button:focus-visible { outline: 3px solid rgba(51, 112, 242, .48); outline-offset: 4px; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  color: white;
  background: var(--navy);
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 10px max(20px, calc((100vw - 920px) / 2));
  border-bottom: 1px solid rgba(220, 229, 229, .9);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 850;
  text-decoration: none;
}

.brand img { width: 38px; height: 38px; border-radius: 11px; }
.topbar nav { display: flex; gap: 18px; }
.topbar nav a { color: var(--ink); font-size: .9rem; font-weight: 750; text-decoration: none; }

.shell { width: min(920px, calc(100% - 32px)); margin: 0 auto; padding: 64px 0 72px; }
.shell.compact { width: min(760px, calc(100% - 32px)); }

.hero, .policy-header {
  padding: clamp(30px, 7vw, 62px);
  border: 1px solid rgba(51, 194, 158, .24);
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(255, 255, 255, .99), rgba(236, 249, 245, .96));
  box-shadow: 0 24px 64px rgba(18, 31, 51, .09);
}

.hero-brand { width: 76px; height: 76px; border-radius: 22px; box-shadow: 0 16px 36px rgba(18, 31, 51, .18); }
.eyebrow { margin: 20px 0 8px; color: var(--mint-ink); font-size: .78rem; font-weight: 900; letter-spacing: .14em; }
h1 { margin: 0; font-size: clamp(2.15rem, 7vw, 4rem); line-height: 1.12; letter-spacing: -.045em; }
h2 { margin: 0 0 14px; font-size: clamp(1.35rem, 3vw, 1.72rem); line-height: 1.35; }
h3 { margin: 24px 0 10px; font-size: 1.08rem; }
p { margin: 0 0 14px; }
.lead { max-width: 720px; margin: 18px 0 0; color: var(--muted); font-size: clamp(1.04rem, 2.6vw, 1.24rem); }
.effective { margin: 16px 0 0; color: var(--muted); font-size: .9rem; }

.action-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 11px 18px;
  border-radius: 14px;
  font-weight: 800;
  text-decoration: none;
}
.button.primary { color: var(--navy); background: var(--mint); }
.button.secondary { color: var(--ink); border: 1px solid var(--line); background: var(--surface); }

.panel, .summary, .toc, .policy section {
  margin-top: 24px;
  padding: clamp(24px, 5vw, 38px);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 16px 38px rgba(18, 31, 51, .05);
  scroll-margin-top: 88px;
}

.panel p:last-child, .policy section > :last-child { margin-bottom: 0; }
.muted { color: var(--muted); }
.summary-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.summary-grid article { padding: 18px; border-radius: 18px; background: #edf8f5; }
.summary-grid strong { display: block; margin-bottom: 7px; color: var(--navy); }
.summary-grid p { color: var(--muted); font-size: .92rem; }
.toc ol { columns: 2; gap: 34px; padding-left: 22px; }
.toc li { margin-bottom: 7px; break-inside: avoid; }
.policy ul, .policy ol { padding-left: 24px; }
.policy li + li { margin-top: 7px; }
.contact-card { padding: 20px; border-radius: 18px; background: #edf8f5; }
.contact-card dl { margin: 0; }
.contact-card div { display: grid; grid-template-columns: minmax(130px, .44fr) 1fr; gap: 16px; padding: 10px 0; border-bottom: 1px solid rgba(8, 117, 87, .12); }
.contact-card div:last-child { border-bottom: 0; }
.contact-card dt { font-weight: 800; }
.contact-card dd { margin: 0; }

footer { padding: 36px 4px 0; color: var(--muted); font-size: .9rem; text-align: center; }
footer nav { display: flex; justify-content: center; gap: 16px; margin-bottom: 12px; }

@media (max-width: 700px) {
  body { font-size: 16px; }
  .topbar { align-items: flex-start; gap: 12px; }
  .topbar nav { gap: 10px; padding-top: 8px; }
  .topbar nav a { font-size: .82rem; }
  .shell { padding-top: 34px; }
  .summary-grid { grid-template-columns: 1fr; }
  .toc ol { columns: 1; }
  .contact-card div { grid-template-columns: 1fr; gap: 2px; }
}

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

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3f7f6;
    --muted: #a9b5bf;
    --line: #33444d;
    --surface: #18232d;
    --background: #101820;
    --mint-ink: #62dfbd;
  }
  body { background: var(--background); }
  a { color: #8bb0ff; }
  .topbar { background: rgba(16, 24, 32, .92); }
  .hero, .policy-header { background: linear-gradient(145deg, #17252c, #15222d); }
  .panel, .summary, .toc, .policy section { background: rgba(24, 35, 45, .97); }
  .summary-grid article, .contact-card { background: #18372f; }
  .summary-grid strong { color: #f3f7f6; }
  .button.secondary { background: #18232d; }
}