:root {
      --primary: #111827;
      --accent: #B8860B;
      --surface: #F9FAFB;
    }
    body { 
      background-color: var(--surface);
      font-family: 'Plus Jakarta Sans', 'Pretendard', sans-serif; 
      line-height: 1.8; 
      color: #1E293B; 
      word-break: keep-all;
    }
    .container-wide { max-width: 1440px; margin: 0 auto; padding: 0 2rem; }
    .glass-nav { background: rgba(255, 255, 255, 0.8); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(0,0,0,0.05); }
    .bento-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 1.5rem; }
    .reveal { opacity: 0; transform: translateY(40px); transition: all 1.2s cubic-bezier(0.22, 1, 0.36, 1); }
    .reveal.active { opacity: 1; transform: translateY(0); }
    h1, h2, h3 { font-weight: 800; tracking: -0.04em; }
    /* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

/* Smooth Scroll Behavior */
html {
  scroll-behavior: smooth;
}

/* Text Selection Color */
::selection {
  background-color: #B8860B;
  color: white;
}

/* Detail/Summary Animation */
details > summary {
  list-style: none;
}
details > summary::-webkit-details-marker {
  display: none;
}

/* Utility for Aspect Ratio (if Tailwind plugin not loaded) */
.aspect-w-3 {
  position: relative;
  padding-bottom: calc(var(--tw-aspect-h) / var(--tw-aspect-w) * 100%);
  --tw-aspect-w: 3;
}
.aspect-h-4 {
  --tw-aspect-h: 4;
}
.aspect-w-3 > * {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
}