:root {
  /* Design typography terms: IBM Plex Mono” used for prompts; Space Grotesk” set in large variable-feeling sizes (`clamp(3rem */
  --lacquer: #050403;
  --charcoal: #11100C;
  --gold: #D6A84F;
  --champagne: #F4D58D;
  --brass: #8A6428;
  --paper: #F7EED8;
  --vermilion: #D95736;
  --mono: "IBM Plex Mono", monospace;
  --display: "Space Grotesk", "Inter", sans-serif;
  --serif: "Noto Serif JP", serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--lacquer); }

body {
  margin: 0;
  color: var(--paper);
  background: var(--lacquer);
  font-family: "Inter", "Lato", sans-serif;
  overflow-x: hidden;
}

#particle-field {
  position: fixed;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  mix-blend-mode: screen;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: .13;
  background-image:
    repeating-linear-gradient(0deg, rgba(247,238,216,.05) 0 1px, transparent 1px 4px),
    radial-gradient(circle at 23% 17%, rgba(214,168,79,.24), transparent 22rem),
    radial-gradient(circle at 82% 74%, rgba(217,87,54,.11), transparent 18rem);
}

.persistent-prompt {
  position: fixed;
  left: clamp(1rem, 3vw, 3rem);
  top: clamp(1rem, 2vw, 1.6rem);
  z-index: 8;
  font-family: var(--mono);
  color: var(--brass);
  font-size: .78rem;
  letter-spacing: .04em;
  background: rgba(5, 4, 3, .72);
  border: 1px solid rgba(138,100,40,.55);
  padding: .55rem .7rem;
  backdrop-filter: blur(8px);
}

.persistent-prompt span, .prompt-line, .comment { color: var(--gold); }
.persistent-prompt em { color: var(--paper); font-style: normal; opacity: .74; }
.persistent-prompt i, .cursor { display: inline-block; width: .55em; height: 1em; background: var(--gold); margin-left: .2em; vertical-align: -.12em; animation: blink 1.05s steps(2, jump-none) infinite; box-shadow: 0 0 18px rgba(214,168,79,.75); }

.panel {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: clamp(5rem, 9vw, 8rem) clamp(1.2rem, 6vw, 7rem);
  border-top: 1px solid rgba(138,100,40,.45);
  background: var(--lacquer);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 1.3rem;
  border: 1px solid rgba(138,100,40,.28);
  pointer-events: none;
}

.top-rule {
  position: absolute;
  top: 2.2rem;
  left: clamp(1.2rem, 6vw, 7rem);
  right: clamp(1.2rem, 6vw, 7rem);
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--gold);
  padding-top: .8rem;
  color: var(--brass);
  font: 500 .78rem var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
}

.terminal-pane, .section-shell, .closing-copy {
  position: relative;
  z-index: 5;
  width: min(1080px, 100%);
}

.hero-pane {
  padding-top: 4vh;
}

.prompt-line, .comment {
  font: 500 clamp(.78rem, 1.3vw, 1rem) var(--mono);
  letter-spacing: .04em;
  margin: 0 0 1.2rem;
}

.kinetic {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3rem, 9vw, 8rem);
  line-height: .86;
  letter-spacing: -.07em;
  color: var(--paper);
  text-transform: lowercase;
}

.kinetic.small { font-size: clamp(3rem, 8vw, 6.6rem); }
.kinetic span { display: inline-block; margin-right: .18em; opacity: 0; transform: translateY(1.05em); filter: blur(8px); transition: opacity .9s ease, transform .9s cubic-bezier(.18,.88,.24,1), filter .9s ease; }
.kinetic span.visible { opacity: 1; transform: translateY(0); filter: blur(0); }
.kinetic .dot { color: var(--gold); margin-inline: -.02em .1em; }

.editorial {
  max-width: 660px;
  margin: 1.5rem 0 0;
  color: rgba(247,238,216,.8);
  font: 500 clamp(1.05rem, 2vw, 1.45rem)/1.65 var(--serif);
}

.jp { color: var(--champagne); }

.photo-slit {
  position: absolute;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(5,4,3,.96), rgba(214,168,79,.18), rgba(5,4,3,.78)),
    radial-gradient(ellipse at 60% 35%, rgba(244,213,141,.8), transparent 16%),
    radial-gradient(ellipse at 35% 65%, rgba(214,168,79,.46), transparent 22%),
    linear-gradient(140deg, #050403 0%, #11100C 36%, #8A6428 67%, #050403 100%);
  filter: saturate(.9) sepia(.55) contrast(1.2) blur(.2px);
  box-shadow: inset 0 0 70px #050403, 0 0 80px rgba(214,168,79,.13);
  overflow: hidden;
}

.photo-slit::after, .receipt-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent 0 9px, rgba(247,238,216,.045) 9px 10px);
  mix-blend-mode: overlay;
}

.hero-slit {
  width: min(34vw, 390px);
  height: 76vh;
  right: 8vw;
  top: 13vh;
  clip-path: inset(0 32% 0 20% round 999px);
  opacity: .82;
}

.scroll-note {
  position: absolute;
  z-index: 6;
  bottom: 2.4rem;
  right: clamp(1.2rem, 6vw, 7rem);
  color: var(--brass);
  font: .78rem var(--mono);
}

.menu { background: linear-gradient(180deg, var(--lacquer), var(--charcoal) 50%, var(--lacquer)); }
.command-list { margin-top: 2.2rem; display: grid; gap: 1rem; }
.command-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(150px, .7fr) 1.5fr minmax(180px, .8fr);
  gap: 1.2rem;
  align-items: center;
  min-height: 5.8rem;
  padding: 1.2rem 1.35rem;
  background: rgba(17,16,12,.78);
  border: 1px solid rgba(138,100,40,.45);
  font-family: var(--mono);
  overflow: hidden;
  transition: transform .45s ease, border-color .45s ease, background .45s ease;
}

.command-row::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--champagne);
  box-shadow: 0 0 18px var(--gold);
  transition: width .55s ease;
}

.command-row:hover { transform: translateX(.65rem); border-color: var(--gold); background: rgba(17,16,12,.94); }
.command-row:hover::before { width: 100%; }
.command-row code { color: var(--gold); font-size: 1rem; }
.command-row p { margin: 0; color: rgba(247,238,216,.78); font-family: var(--serif); }
.command-row span { color: var(--brass); text-align: right; transition: color .35s ease; }
.command-row:hover span { color: var(--vermilion); }

.atmosphere { background: radial-gradient(circle at 50% 48%, rgba(214,168,79,.08), transparent 32rem), #050403; }
.narrow { max-width: 920px; }
.ambient-bars { position: absolute; inset: 0; z-index: 1; display: flex; justify-content: space-around; opacity: .6; }
.ambient-bars i { width: 9vw; max-width: 110px; min-width: 48px; height: 78vh; margin-top: 12vh; border: 1px solid rgba(138,100,40,.34); background: linear-gradient(180deg, rgba(214,168,79,.22), transparent 45%, rgba(5,4,3,.8)); filter: blur(.3px); transform: skewX(-5deg); }
.ambient-bars i:nth-child(2) { margin-top: 6vh; height: 88vh; opacity: .45; }
.ambient-bars i:nth-child(3) { margin-top: 20vh; height: 60vh; opacity: .32; }

.memory { background: linear-gradient(90deg, #050403, #11100C 50%, #050403); }
.receipt {
  position: relative;
  z-index: 5;
  width: min(430px, 92vw);
  min-height: 78vh;
  padding: 1.6rem 1.25rem;
  color: var(--charcoal);
  background: linear-gradient(180deg, #F7EED8, #F4D58D 52%, #F7EED8);
  border: 1px solid var(--brass);
  box-shadow: 0 0 0 10px rgba(138,100,40,.08), 0 30px 90px rgba(0,0,0,.6);
  font-family: var(--mono);
}

.receipt::before, .receipt::after { content: ""; position: absolute; left: 0; right: 0; height: 11px; background: repeating-linear-gradient(90deg, transparent 0 10px, var(--lacquer) 10px 20px); }
.receipt::before { top: -1px; }.receipt::after { bottom: -1px; }
.receipt-head { text-align: center; padding-bottom: 1rem; margin-bottom: .9rem; border-bottom: 1px dashed var(--brass); font-weight: 700; color: var(--lacquer); }
.receipt-row { display: grid; grid-template-columns: 5.7rem 1fr; gap: .3rem .8rem; padding: .8rem 0; border-bottom: 1px solid rgba(138,100,40,.32); }
.receipt-row time { color: var(--brass); }
.receipt-row span { color: var(--lacquer); font-weight: 700; }
.receipt-row p { grid-column: 2; margin: 0; font-family: var(--serif); color: rgba(17,16,12,.78); }
.receipt-row.vermilion span { color: var(--vermilion); }
.receipt-image { position: relative; height: 8.8rem; margin: 1rem 0; overflow: hidden; background: radial-gradient(ellipse at 60% 40%, rgba(5,4,3,.08), transparent 18%), linear-gradient(120deg, #050403, #D6A84F 52%, #11100C); filter: sepia(.55) saturate(1.2); }
.image-two { background: radial-gradient(ellipse at 40% 70%, rgba(244,213,141,.8), transparent 20%), linear-gradient(65deg, #11100C, #8A6428, #050403); }
.receipt-total { padding-top: 1.2rem; text-align: center; color: var(--lacquer); font-weight: 700; }
.receipt-total .cursor { height: .9em; background: var(--vermilion); box-shadow: 0 0 12px rgba(217,87,54,.6); }

.closing { background: radial-gradient(circle at 50% 80%, rgba(214,168,79,.1), transparent 22rem), #050403; }
.closing-copy { text-align: left; }
.final-glimmer { position: absolute; bottom: 18vh; right: 24vw; width: 4px; height: 4px; background: var(--champagne); border-radius: 50%; box-shadow: 0 0 16px 6px rgba(244,213,141,.55); animation: glimmer 4s ease-in-out infinite; }

.reveal { opacity: 0; transform: translateY(2rem); transition: opacity .9s ease, transform .9s cubic-bezier(.18,.88,.24,1); }
.reveal.in-view { opacity: 1; transform: translateY(0); }

@keyframes blink { 50% { opacity: 0; } }
@keyframes glimmer { 0%, 100% { transform: scale(.6); opacity: .3; } 45% { transform: scale(1.35); opacity: 1; } }

@media (max-width: 760px) {
  .panel { padding-inline: 1.1rem; }
  .panel::before { inset: .7rem; }
  .top-rule { left: 1.1rem; right: 1.1rem; font-size: .62rem; }
  .hero-slit { right: -4rem; width: 70vw; opacity: .45; }
  .command-row { grid-template-columns: 1fr; gap: .55rem; }
  .command-row span { text-align: left; }
  .persistent-prompt { max-width: calc(100vw - 2rem); }
}