:root {
  --paper:      #FBFAF4;
  --paper-warm: #F7F3E8;
  --ink:        #2D3142;
  --ink-soft:   #4A4F65;
  --sage:       rgba(168, 180, 160, 0.32);
  --pencil:     #C75146;
  --pencil-deep:#8E2E22;
  --rule:       rgba(45, 49, 66, 0.16);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 18px; }

body {
  background: var(--paper);
  background-image:
    linear-gradient(var(--sage) 1px, transparent 1px),
    linear-gradient(90deg, var(--sage) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
  color: var(--ink);
  font-family: 'Source Serif 4', Georgia, serif;
  font-size: 1.08rem;
  line-height: 1.7;
  min-height: 100vh;
  padding: 4rem 1.5rem 5rem;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.18  0 0 0 0 0.19  0 0 0 0 0.26  0 0 0 0.07 0'/></filter><rect width='180' height='180' filter='url(%23n)'/></svg>");
  opacity: 0.5;
  mix-blend-mode: multiply;
  z-index: 1;
}

::selection { background: var(--pencil); color: var(--paper); }

.notebook {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* Cover */
.cover {
  padding: 1.5rem 0 3rem;
  border-bottom: 1.5px solid var(--ink);
  margin-bottom: 3.5rem;
}

.vol {
  font-family: 'Caveat', cursive;
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--pencil);
  margin-bottom: 0.85rem;
  letter-spacing: 0.01em;
  transform: rotate(-1deg);
  transform-origin: left;
  display: inline-block;
}

.title {
  font-family: 'Eczar', Georgia, serif;
  font-weight: 700;
  font-size: clamp(3rem, 9.5vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.subtitle {
  font-family: 'Source Serif 4', serif;
  font-style: italic;
  font-size: 1.18rem;
  color: var(--ink);
  opacity: 0.85;
  max-width: 48ch;
  line-height: 1.55;
  text-wrap: pretty;
}

/* Apps */
.apps-h {
  font-family: 'Eczar', Georgia, serif;
  font-weight: 700;
  font-size: 1.55rem;
  color: var(--pencil);
  margin-bottom: 1.75rem;
  letter-spacing: -0.01em;
}

.app {
  padding: 1.5rem 0 1.75rem;
  border-bottom: 1px solid var(--rule);
}

.app:last-of-type {
  border-bottom: 0;
  padding-bottom: 1rem;
}

.app-name {
  font-family: 'Eczar', Georgia, serif;
  font-weight: 700;
  font-size: 1.95rem;
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 0.55rem;
}

.app-name a {
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  border-bottom: 1px solid transparent;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.app-name a:hover,
.app-name a:focus-visible {
  color: var(--pencil);
  border-bottom-color: var(--pencil);
  outline: none;
}

.app-arrow {
  color: var(--pencil);
  font-size: 1.4rem;
  transition: transform 0.18s ease;
  display: inline-block;
}

.app-name a:hover .app-arrow,
.app-name a:focus-visible .app-arrow {
  transform: translateX(4px);
}

.app-desc {
  font-family: 'Source Serif 4', serif;
  font-style: italic;
  font-size: 1.12rem;
  color: var(--ink);
  opacity: 0.82;
}

/* Note */
.note {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px dashed var(--rule);
  font-family: 'Caveat', cursive;
  font-weight: 500;
  font-size: 1.25rem;
  color: var(--ink);
  opacity: 0.6;
  transform: rotate(-0.8deg);
  transform-origin: left;
  display: inline-block;
}

/* Entity footer */
.entity {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.entity p {
  font-family: 'Source Serif 4', serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
  opacity: 0.55;
}

/* Responsive */
@media (max-width: 640px) {
  body { padding: 2.5rem 1.25rem 4rem; }
  .cover { padding: 1rem 0 2.5rem; margin-bottom: 2.5rem; }
  .title { font-size: clamp(2.5rem, 13vw, 4rem); }
  .subtitle { font-size: 1.05rem; }
  .app-name { font-size: 1.55rem; }
  .app-arrow { font-size: 1.15rem; }
}