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

body { font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif; background: var(--color-bg, #f0f4f8); padding-top: 60px; padding-bottom: 60px; }

.pp-header { position: fixed; top: 0; left: 0; right: 0; height: 60px; background: linear-gradient(135deg, #1e2530 0%, #2a4a72 100%); display: flex; align-items: center; padding: 0; z-index: 200; }
.pp-header-inner { max-width: 900px; margin: 0 auto; padding: 0 24px; width: 100%; display: flex; align-items: center; gap: 20px; }

@keyframes logo-text-shine {
  0%   { background-position: 200% center, 0% center; }
  50%  { background-position: -200% center, 0% center; }
  100% { background-position: -200% center, 0% center; }
}
.pp-logo {
  display: inline-flex; align-items: center;
  background:
    linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.75) 50%, transparent 100%),
    linear-gradient(90deg, #38bdf8 0%, #38bdf8 11%, rgba(255,255,255,0.8) 11%, rgba(255,255,255,0.8) 38%, #4ade80 38%, #4ade80 49%, rgba(255,255,255,0.8) 49%);
  background-size: 200% auto, 100% auto;
  background-position: 200% center, 0% center;
  background-repeat: no-repeat, no-repeat;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 18px; font-weight: 800;
  text-decoration: none; letter-spacing: -0.3px;
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
  animation: logo-text-shine 2.4s ease-in-out infinite;
}

.pp-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.pp-nav a { color: rgba(255,255,255,0.75); font-size: 13px; font-weight: 500; text-decoration: none; padding: 6px 12px; border-radius: 4px; transition: background 0.15s, color 0.15s; }
.pp-nav a:hover { background: rgba(255,255,255,0.12); color: #fff; text-decoration: none; }

.pp-wrap { max-width: 900px; margin: 40px auto; padding: 0 16px; }
.pp-card { background: #fff; border-radius: 14px; box-shadow: 0 1px 6px rgba(0,0,0,0.07); padding: 48px 52px; }

h1 { font-size: 26px; font-weight: 800; color: #1a2a3a; margin-bottom: 6px; }
.pp-updated { font-size: 13px; color: #8a9aaa; margin-bottom: 36px; }

h2 { font-size: 16px; font-weight: 700; color: #1a2a3a; margin: 32px 0 10px; border-left: 3px solid #2d8a55; padding-left: 12px; }
p { font-size: 14px; color: #4a5a6a; line-height: 1.8; margin-bottom: 12px; }

a { color: #2d6ea8; text-decoration: none; }
a:hover { text-decoration: underline; }
.pp-logo:hover { text-decoration: none; }

.top-btn { position: fixed; right: 32px; bottom: 32px; width: 44px; height: 44px; border-radius: 50%; background: #1e44a0; color: #fff; border: none; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 400; box-shadow: 0 2px 8px rgba(0,0,0,0.22); opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; }
.top-btn:hover { transform: translateY(-2px); }
.top-btn--visible { opacity: 1; pointer-events: auto; }