/* Cassette Desk — Appily Ninetysix policy
   Syne + Literata · magenta · cyan · leader · ice/warm field
   Not Matter Brief / Frequency / Rolodex / quarry / Harborline rail
   Contrast: body #0F1A22 on #FFF (AAA); mute #3A4652 on #FFF (AA); live white on #E6007A */

:root {
  --cs-ink: #0F1A22;
  --cs-field: #FFF1E8;
  --cs-ice: #E8F9FF;
  --cs-surface: #FFFFFF;
  --cs-magenta: #E6007A;
  --cs-magenta-deep: #B80062;
  --cs-cyan: #00A8C8;
  --cs-cyan-deep: #007A94;
  --cs-leader: #FFB800;
  --cs-mute: #3A4652;
  --cs-shell: #141E28;
  --cs-line: rgba(15, 26, 34, 0.14);
  --cs-line-strong: rgba(15, 26, 34, 0.28);
  --font-cs-display: "Syne", "Trebuchet MS", sans-serif;
  --font-cs-body: "Literata", "Georgia", serif;
  --font-cs-ui: "Syne", "Trebuchet MS", sans-serif;
  --cs-soft: cubic-bezier(0.22, 1, 0.36, 1);
  --cs-spring: cubic-bezier(0.22, 1.4, 0.36, 1);
  --cs-fast: 200ms var(--cs-soft);
  --cs-ti: 0;
}

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

html { scroll-behavior: smooth; }

body.cs-body {
  margin: 0;
  min-height: 100vh;
  color: var(--cs-ink);
  font-family: var(--font-cs-body);
  font-size: 17px;
  line-height: 1.7;
  background:
    radial-gradient(760px 420px at 100% 0%, rgba(230, 0, 122, 0.1), transparent 55%),
    radial-gradient(640px 380px at 0% 40%, rgba(0, 168, 200, 0.1), transparent 50%),
    radial-gradient(500px 320px at 50% 100%, rgba(255, 184, 0, 0.12), transparent 55%),
    linear-gradient(160deg, var(--cs-field) 0%, #FFF8F2 40%, var(--cs-ice) 100%);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.cs-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--cs-magenta);
  color: #fff;
  font-family: var(--font-cs-ui);
  font-weight: 700;
}
.cs-skip:focus { left: 0.75rem; top: 0.75rem; }

/* —— Hop —— */
.cs-hop {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem clamp(1rem, 3vw, 2rem);
  background: var(--cs-ink);
  color: #fff;
  border-bottom: 3px solid var(--cs-magenta);
  font-family: var(--font-cs-ui);
}

.cs-hop-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.05rem;
}
.cs-hop-brand span:last-child {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cs-leader);
}
.cs-hop-spool {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  border: 2px solid var(--cs-cyan);
  box-shadow: inset 0 0 0 2px var(--cs-shell), 0 0 0 1px var(--cs-cyan);
  background: conic-gradient(from 0deg, var(--cs-cyan), transparent 40%, var(--cs-magenta), transparent 80%, var(--cs-cyan));
}

.cs-hop-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 700;
}
.cs-hop-links a {
  position: relative;
  padding: 0.2rem 0;
  color: rgba(255, 255, 255, 0.82);
  transition: color var(--cs-fast);
}
.cs-hop-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--cs-magenta);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--cs-fast);
}
.cs-hop-links a:hover { color: #fff; }
.cs-hop-links a:hover::after { transform: scaleX(1); }

/* —— Mast —— */
.cs-mast {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 2.4rem) clamp(1rem, 3vw, 2rem) 0.75rem;
}
.cs-mast-kicker {
  margin: 0 0 0.4rem;
  font-family: var(--font-cs-ui);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cs-magenta-deep);
}
.cs-mast h1 {
  margin: 0 0 0.55rem;
  font-family: var(--font-cs-display);
  font-size: clamp(1.9rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cs-ink);
}
.cs-mast p {
  margin: 0;
  max-width: 38rem;
  font-size: 1.02rem;
  color: var(--cs-mute);
  line-height: 1.55;
  font-family: var(--font-cs-ui);
  font-weight: 600;
}

/* —— Cassette shell nav —— */
.cs-shell {
  max-width: 860px;
  margin: 0 auto;
  padding: 0.75rem clamp(1rem, 3vw, 2rem) 0;
}

.cs-shell-face {
  position: relative;
  padding: 1rem 1rem 1.1rem;
  background: linear-gradient(165deg, #1A2632 0%, var(--cs-shell) 55%, #0E161E 100%);
  border-radius: 18px;
  box-shadow:
    0 16px 36px rgba(15, 26, 34, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
.cs-shell-face::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  pointer-events: none;
}

.cs-shell-spools {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  margin-bottom: 0.75rem;
}
.cs-spool {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  background:
    repeating-conic-gradient(from 0deg, #2A3848 0 12deg, #1A2632 12deg 24deg);
  border: 3px solid #3A4A58;
  box-shadow: inset 0 0 0 6px #121A22;
}
.cs-window {
  width: 5.5rem;
  height: 1.55rem;
  padding: 0.25rem;
  background: #0A1016;
  border-radius: 4px;
  border: 1px solid #3A4A58;
  overflow: hidden;
}
.cs-tape {
  display: block;
  height: 100%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cs-magenta), var(--cs-cyan), var(--cs-leader), var(--cs-magenta));
  background-size: 200% 100%;
  animation: cs-reel 4.5s linear infinite;
}
@keyframes cs-reel {
  to { background-position: 200% 0; }
}

.cs-shell-label {
  position: relative;
  z-index: 1;
  margin: 0 0 0.65rem;
  font-family: var(--font-cs-ui);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}

.cs-tracks {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;
}

.cs-track {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  min-width: 5.4rem;
  padding: 0.55rem 0.7rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  color: rgba(255, 255, 255, 0.88);
  font-family: var(--font-cs-ui);
  transform: translateY(12px);
  opacity: 0;
  transition:
    transform 420ms var(--cs-spring),
    opacity 320ms var(--cs-soft),
    background var(--cs-fast),
    border-color var(--cs-fast),
    color var(--cs-fast),
    box-shadow var(--cs-fast);
  transition-delay: calc(var(--cs-ti) * 55ms);
}
.cs-shell.is-live .cs-track {
  transform: none;
  opacity: 1;
}
.cs-track em {
  font-style: normal;
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--cs-cyan-deep);
}
.cs-track strong {
  font-size: 0.88rem;
  font-weight: 800;
}
.cs-track:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.cs-track.is-live {
  background: var(--cs-magenta);
  border-color: var(--cs-magenta);
  color: #fff;
  box-shadow: 0 6px 18px rgba(230, 0, 122, 0.4);
}
.cs-track.is-live em { color: var(--cs-leader); }
.cs-track:focus-visible {
  outline: 2px solid var(--cs-leader);
  outline-offset: 2px;
}

/* —— Reading reel —— */
.cs-main {
  max-width: 720px;
  margin: 0 auto;
  padding: clamp(1.25rem, 3vw, 2rem) clamp(1rem, 3vw, 2rem) 2.5rem;
}

.cs-reel {
  position: relative;
  padding: clamp(1.25rem, 3vw, 1.75rem) clamp(1.15rem, 3vw, 1.85rem) clamp(1.5rem, 3vw, 2rem);
  background: var(--cs-surface);
  border: 1px solid var(--cs-line);
  border-radius: 4px 20px 4px 20px;
  box-shadow: 0 12px 32px rgba(15, 26, 34, 0.08);
  transform: translateY(16px);
  opacity: 0;
  transition: transform 560ms var(--cs-spring), opacity 420ms var(--cs-soft);
}
.cs-reel.is-in {
  transform: none;
  opacity: 1;
}
.cs-reel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.1rem;
  bottom: 1.1rem;
  width: 4px;
  background: var(--cs-cyan);
  border-radius: 0 3px 3px 0;
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 680ms var(--cs-soft) 120ms;
}
.cs-reel.is-in::before {
  transform: scaleY(1);
}

.cs-reel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.9rem;
  border-bottom: 2px dashed var(--cs-line-strong);
  font-family: var(--font-cs-ui);
}
.cs-reel-head p {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--cs-mute);
}

.cs-leader {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.7rem;
  background: var(--cs-leader);
  color: var(--cs-ink);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}
.cs-leader em {
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.68rem;
  opacity: 0.8;
}

/* Calm long-reading body — high contrast */
.cs-body {
  color: var(--cs-ink);
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 40rem;
}

.cs-body h2 {
  position: relative;
  margin: 1.65rem 0 0.55rem;
  padding-bottom: 0.25rem;
  font-family: var(--font-cs-display);
  font-size: 1.28rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--cs-ink);
  background-image: linear-gradient(var(--cs-magenta), var(--cs-magenta));
  background-size: 0% 3px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 520ms var(--cs-soft);
}
.cs-body h2:first-child { margin-top: 0; }
.cs-body h2.is-marked {
  background-size: 100% 3px;
}

.cs-body p {
  margin: 0 0 0.9rem;
  color: var(--cs-ink);
}

.cs-body ul {
  margin: 0 0 0.9rem;
  padding-left: 1.15rem;
}
.cs-body li {
  margin-bottom: 0.4rem;
  color: var(--cs-ink);
}
.cs-body li::marker {
  color: var(--cs-cyan-deep);
}

.cs-body strong { font-weight: 700; color: var(--cs-ink); }

.cs-body a {
  color: var(--cs-magenta-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}
.cs-body a:hover { color: var(--cs-magenta); }

.cs-body em {
  font-style: italic;
  color: var(--cs-mute);
}

/* —— Links / colo —— */
.cs-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem 1.25rem;
  padding: 0.5rem clamp(1rem, 3vw, 2rem) 1rem;
  font-family: var(--font-cs-ui);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--cs-mute);
}
.cs-links a:hover { color: var(--cs-magenta-deep); }

.cs-colo {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  padding: 1rem clamp(1rem, 3vw, 2rem) 1.5rem;
  border-top: 3px solid var(--cs-ink);
  font-family: var(--font-cs-ui);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--cs-mute);
}

/* —— Responsive —— */
@media (max-width: 640px) {
  .cs-hop {
    flex-direction: column;
    align-items: flex-start;
  }
  .cs-track {
    min-width: calc(33.33% - 0.35rem);
    flex: 1 1 calc(33.33% - 0.35rem);
  }
  .cs-body { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .cs-track,
  .cs-reel {
    opacity: 1;
    transform: none;
  }
  .cs-reel::before { transform: scaleY(1); }
  .cs-body h2 { background-size: 100% 3px; }
  .cs-tape { animation: none; }
}