* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo',
               'Noto Sans KR', 'Noto Sans JP', sans-serif;
  background: #f9f9f9;
  color: #222;
  line-height: 1.7;
}

header {
  background: #fff;
  border-bottom: 1px solid #eee;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}
header .dot {
  width: 10px; height: 10px;
  background: #5C6BC0;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(92, 107, 192, 0.6);
  flex-shrink: 0;
}
header h1 {
  font-size: 20px;
  font-weight: 800;
  color: #111;
}
header span {
  font-size: 12px;
  font-weight: 400;
  color: #aaa;
  margin-left: 2px;
}

nav {
  background: #fff;
  border-bottom: 1px solid #eee;
  display: flex;
  gap: 0;
}
nav a {
  flex: 1;
  text-align: center;
  padding: 14px;
  font-size: 14px;
  font-weight: 600;
  color: #999;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: all 0.15s;
  cursor: pointer;
}
nav a.active, nav a:hover {
  color: #5C6BC0;
  border-bottom-color: #5C6BC0;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 64px;
}

.notice {
  background: #FFF8F0;
  border: 1px solid rgba(255, 152, 0, 0.3);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 13px;
  color: #E65100;
  margin-bottom: 28px;
  line-height: 1.6;
}

section {
  margin-bottom: 28px;
}
section h2 {
  font-size: 14px;
  font-weight: 700;
  color: #111;
  margin-bottom: 8px;
}
section p {
  font-size: 13px;
  color: #555;
  white-space: pre-line;
}

.divider {
  border: none;
  border-top: 1px solid #e5e5e5;
  margin: 36px 0 32px;
}

h3.section-title {
  font-size: 16px;
  font-weight: 800;
  color: #111;
  margin-bottom: 20px;
}

.updated {
  font-size: 11px;
  color: #bbb;
  margin-top: 32px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }