:root {
  color-scheme: dark;
  font-family: Pretendard, "Noto Sans KR", system-ui, -apple-system, sans-serif;
  background: #090b0f;
  color: #f3f4f6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 80% 0%, rgba(59, 130, 246, 0.11), transparent 34rem),
    #090b0f;
}

a { color: #60a5fa; }
a:hover { color: #93c5fd; }

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

.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  color: #f8fafc;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .08em;
  text-decoration: none;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: #3b82f6;
  box-shadow: 0 0 18px rgba(59, 130, 246, .5);
}

main {
  margin-top: 28px;
  padding: clamp(24px, 5vw, 52px);
  border: 1px solid rgba(255,255,255,.09);
  border-radius: 24px;
  background: rgba(20, 23, 30, .92);
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}

.eyebrow {
  margin: 0 0 12px;
  color: #60a5fa;
  font: 700 11px/1.4 "JetBrains Mono", monospace;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 { margin: 0; font-size: clamp(32px, 6vw, 54px); line-height: 1.05; }
h2 { margin: 40px 0 12px; font-size: 21px; }
h3 { margin: 24px 0 8px; font-size: 16px; }
p, li { color: #c7cbd4; font-size: 15px; line-height: 1.8; }
ul, ol { padding-left: 22px; }

.lead { max-width: 720px; color: #e6e8ed; font-size: 17px; }
.meta { color: #828895; font-size: 13px; }

.notice {
  margin: 24px 0;
  padding: 18px 20px;
  border-left: 3px solid #3b82f6;
  border-radius: 8px;
  background: rgba(59, 130, 246, .08);
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 12px;
  background: #2563eb;
  color: #fff;
  font-weight: 500;
  text-decoration: none;
}
.button:hover { background: #1d4ed8; color: #fff; }
.button.secondary { background: #282d37; color: #f3f4f6; }

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: space-between;
  padding: 22px 4px 0;
  color: #777e8b;
  font-size: 12px;
}

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

@media (max-width: 560px) {
  .shell { width: min(100% - 20px, 920px); padding-top: 18px; }
  main { border-radius: 18px; }
}