:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-synthesis: none;
  --background: #f4f7ff;
  --surface: rgba(255, 255, 255, 0.88);
  --text: #172033;
  --secondary: #5f6b80;
  --line: rgba(79, 70, 229, 0.14);
  --accent: #4f46e5;
  --accent-soft: rgba(79, 70, 229, 0.1);
  --warning: #9a5b00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 4%, rgba(34, 211, 238, 0.18), transparent 24rem),
    radial-gradient(circle at 92% 20%, rgba(99, 102, 241, 0.16), transparent 26rem),
    var(--background);
  color: var(--text);
  line-height: 1.68;
}

header, main, footer {
  width: min(760px, calc(100% - 32px));
  margin-inline: auto;
}

header {
  padding: 36px 0 20px;
}

.brand {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-decoration: none;
}

h1 {
  margin: 10px 0 6px;
  font-size: clamp(2rem, 8vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.045em;
}

.effective, .summary, footer {
  color: var(--secondary);
}

.summary {
  margin-top: 20px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--accent-soft);
}

main {
  padding: 8px 0 44px;
}

article {
  padding: clamp(22px, 5vw, 40px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: 0 24px 72px rgba(51, 65, 85, 0.12);
  backdrop-filter: blur(20px);
}

section + section {
  margin-top: 38px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  letter-spacing: -0.025em;
}

h3 {
  margin: 22px 0 8px;
  font-size: 1rem;
}

p { margin: 10px 0; }
ul, ol { padding-left: 1.35rem; }
li + li { margin-top: 6px; }

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

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
}

table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

tr:last-child td { border-bottom: 0; }
th { background: var(--accent-soft); }

.notice {
  padding: 14px 16px;
  border-left: 4px solid #f59e0b;
  border-radius: 12px;
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.button {
  display: inline-block;
  padding: 11px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  font-weight: 700;
  text-decoration: none;
}

.button.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}

footer {
  padding: 0 0 44px;
  font-size: 0.85rem;
}

footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f1420;
    --surface: rgba(24, 32, 50, 0.9);
    --text: #eef2ff;
    --secondary: #aab4ca;
    --line: rgba(165, 180, 252, 0.16);
    --accent: #a5b4fc;
    --accent-soft: rgba(129, 140, 248, 0.14);
    --warning: #fbbf24;
  }
}