:root {
  /* Compliance trace: Space Grotesk** / IBM Plex Sans JP** for explanatory text / JetBrains Mono** only for tiny command tokens. */
  --soft-white: #F3F7EA;
  --bark: #3A241D;
  --night: #071018;
  --lavender: #D7CCFF;
  --cyan: #42D9FF;
  --green: #67FFB1;
  --black: #03060A;
  --violet: #8D5CFF;
  --display: "Space Grotesk", Inter, system-ui, sans-serif;
  --body: "IBM Plex Sans JP", Inter, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; overflow: hidden; background: var(--black); color: var(--soft-white); }

body {
  font-family: var(--body);
  background:
    radial-gradient(circle at 72% 16%, rgba(141, 92, 255, 0.2), transparent 32%),
    linear-gradient(135deg, var(--black), var(--night) 58%, #020306);
}

button { font: inherit; color: inherit; }

.mono { font-family: var(--mono); }

.boot-veil {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 68%, rgba(66, 217, 255, 0.08), transparent 24%), var(--black);
  transition: opacity 900ms ease, filter 900ms ease, visibility 900ms ease;
}

.boot-veil.hidden { opacity: 0; filter: blur(18px); visibility: hidden; pointer-events: none; }

.boot-prompt {
  border: 1px solid rgba(103, 255, 177, 0.22);
  background: rgba(7, 16, 24, 0.72);
  color: var(--soft-white);
  font-family: var(--mono);
  letter-spacing: -0.02em;
  padding: 18px 24px;
  box-shadow: 0 0 45px rgba(103, 255, 177, 0.15), inset 0 0 24px rgba(66, 217, 255, 0.07);
  cursor: pointer;
}

.token, .prompt-token { color: var(--green); text-shadow: 0 0 14px rgba(103, 255, 177, 0.9); }
.caret { display: inline-block; width: 9px; height: 18px; margin-left: 8px; background: var(--green); box-shadow: 0 0 18px var(--green); animation: blink 1s steps(2, start) infinite; vertical-align: -3px; }

.site-shell { min-height: 100vh; display: grid; grid-template-columns: 278px 1fr; opacity: 0.2; transition: opacity 900ms ease; }
.site-shell.awake { opacity: 1; }

.sidebar {
  position: relative;
  height: 100vh;
  padding: 26px 20px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(3, 6, 10, 0.98), rgba(7, 16, 24, 0.94)), radial-gradient(circle at 100% 32%, rgba(141, 92, 255, 0.22), transparent 45%);
  border-right: 1px solid rgba(215, 204, 255, 0.13);
  box-shadow: 18px 0 70px rgba(0, 0, 0, 0.42);
}

.rail-glow { position: absolute; top: 0; right: -1px; width: 2px; height: 100%; background: linear-gradient(var(--violet), var(--cyan), var(--green), transparent); filter: blur(1px); opacity: 0.75; }
.wordmark { font-family: var(--display); font-weight: 700; font-size: 25px; letter-spacing: -0.08em; color: var(--soft-white); text-transform: lowercase; margin-bottom: 12px; }
.rail-status { display: flex; gap: 8px; align-items: center; font-family: var(--mono); font-size: 11px; color: var(--lavender); opacity: 0.8; margin-bottom: 48px; }
.rail-status span { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 14px var(--green); }

.file-tree { display: grid; gap: 11px; }
.tree-node {
  position: relative;
  width: 100%;
  min-height: 70px;
  border: 1px solid rgba(215, 204, 255, 0.08);
  background: rgba(243, 247, 234, 0.025);
  padding: 13px 14px;
  text-align: left;
  cursor: pointer;
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity 650ms ease, transform 650ms ease, border-color 350ms ease, background 350ms ease, box-shadow 350ms ease;
}
.awake .tree-node { opacity: 1; transform: translateX(0); }
.awake .tree-node:nth-child(1) { transition-delay: 120ms; }
.awake .tree-node:nth-child(2) { transition-delay: 260ms; }
.awake .tree-node:nth-child(3) { transition-delay: 400ms; }
.awake .tree-node:nth-child(4) { transition-delay: 540ms; }
.tree-node span { display: block; font-family: var(--display); font-size: 18px; font-weight: 700; letter-spacing: -0.05em; color: var(--lavender); }
.tree-node em { display: block; margin-top: 8px; font-family: var(--mono); font-size: 10px; font-style: normal; color: rgba(243, 247, 234, 0.55); }
.tree-node.active { border-color: rgba(103, 255, 177, 0.55); background: linear-gradient(90deg, rgba(103, 255, 177, 0.12), rgba(66, 217, 255, 0.04)); box-shadow: 0 0 30px rgba(103, 255, 177, 0.12); }
.tree-node.active span { color: var(--green); text-shadow: 0 0 15px rgba(103, 255, 177, 0.5); }

.rail-footer { position: absolute; left: 20px; right: 20px; bottom: 24px; color: rgba(215, 204, 255, 0.66); font-size: 12px; }
.rail-footer p { margin: 7px 0; }

.stage { position: relative; height: 100vh; overflow: hidden; background: var(--night); }
.aurora {
  position: absolute;
  inset: -25% -10% 24% -10%;
  background:
    linear-gradient(108deg, transparent 14%, rgba(141, 92, 255, 0.2), transparent 46%),
    linear-gradient(72deg, transparent 18%, rgba(66, 217, 255, 0.24), rgba(103, 255, 177, 0.18), transparent 74%);
  filter: blur(20px) saturate(1.25);
  opacity: 0.85;
  transform: translateX(var(--aurora-x, 0)) rotate(var(--aurora-r, -3deg));
  transition: transform 1000ms ease, opacity 1000ms ease;
  animation: auroraDrift 13s ease-in-out infinite alternate;
}
.stars { position: absolute; inset: 0; background-image: radial-gradient(circle, rgba(243, 247, 234, 0.7) 1px, transparent 1.5px); background-size: 113px 89px; opacity: 0.13; }
.telephone-wires { position: absolute; top: 23%; left: 2%; right: 0; height: 120px; transform: rotate(-6deg); opacity: 0.32; }
.telephone-wires i { display: block; height: 1px; background: rgba(215, 204, 255, 0.42); margin-bottom: 18px; box-shadow: 0 0 10px rgba(66, 217, 255, 0.28); }
.observatory { position: absolute; right: 11%; bottom: 15%; width: 160px; height: 82px; border-radius: 90px 90px 6px 6px; background: linear-gradient(180deg, rgba(215, 204, 255, 0.15), rgba(3, 6, 10, 0.9)); border: 1px solid rgba(215, 204, 255, 0.18); box-shadow: inset 0 14px 20px rgba(66, 217, 255, 0.07); }
.observatory:after { content: ""; position: absolute; left: 50%; top: -22px; width: 46px; height: 46px; border: 1px solid rgba(103, 255, 177, 0.28); border-radius: 50%; transform: translateX(-50%); background: rgba(3, 6, 10, 0.82); }
.grass-field { position: absolute; left: 0; right: 0; bottom: 0; height: 30%; background: linear-gradient(transparent, rgba(3, 6, 10, 0.88) 34%, var(--black)), repeating-linear-gradient(92deg, transparent 0 10px, rgba(103, 255, 177, 0.13) 11px, transparent 13px); clip-path: polygon(0 29%, 7% 18%, 16% 26%, 28% 12%, 40% 25%, 55% 11%, 72% 24%, 84% 9%, 100% 22%, 100% 100%, 0 100%); }

.cursor-firefly { position: absolute; left: 58%; top: 54%; width: 11px; height: 11px; background: var(--green); box-shadow: 0 0 22px var(--green), 0 0 54px rgba(103, 255, 177, 0.46); z-index: 5; transform: translate3d(0,0,0); transition: left 900ms ease, top 900ms ease, border-radius 900ms ease; animation: fireflyPulse 2.4s ease-in-out infinite; }

.scene { position: absolute; inset: 0; padding: 9vh 8vw 22vh 8vw; display: flex; flex-direction: column; justify-content: center; opacity: 0; filter: blur(16px); transform: translateY(18px); pointer-events: none; transition: opacity 900ms ease, filter 900ms ease, transform 900ms ease; }
.scene.active { opacity: 1; filter: blur(0); transform: translateY(0); pointer-events: auto; }
.scene-kicker { color: var(--green); font-size: 12px; letter-spacing: 0.08em; margin-bottom: 18px; text-shadow: 0 0 16px rgba(103, 255, 177, 0.55); }
h1, h2 { margin: 0; max-width: 980px; font-family: var(--display); font-weight: 700; font-size: clamp(44px, 7vw, 108px); line-height: 0.88; letter-spacing: -0.085em; text-transform: lowercase; color: var(--soft-white); text-shadow: 0 0 35px rgba(215, 204, 255, 0.12); }
.scene-copy { max-width: 650px; color: rgba(243, 247, 234, 0.78); font-size: clamp(16px, 1.6vw, 22px); line-height: 1.65; margin: 28px 0 24px; }

.memory-pane {
  position: relative;
  width: min(560px, 58vw);
  border: 1px solid rgba(215, 204, 255, 0.18);
  background: linear-gradient(135deg, rgba(3, 6, 10, 0.72), rgba(7, 16, 24, 0.42)), rgba(58, 36, 29, 0.14);
  backdrop-filter: blur(13px);
  padding: 48px 28px 26px;
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.3), inset 0 0 24px rgba(66, 217, 255, 0.05);
  color: var(--lavender);
}
.pane-top { position: absolute; top: 0; left: 0; right: 0; height: 32px; display: flex; align-items: center; gap: 7px; padding: 0 13px; border-bottom: 1px solid rgba(215, 204, 255, 0.12); font-family: var(--mono); font-size: 11px; color: rgba(243, 247, 234, 0.58); }
.pane-top span { width: 8px; height: 8px; border-radius: 50%; background: var(--bark); }
.pane-top span:nth-child(2) { background: var(--violet); }
.pane-top span:nth-child(3) { background: var(--green); }
.pane-top strong { margin-left: auto; font-weight: 400; }
.output-line { color: var(--cyan); font-size: 12px; }
.glass { border-color: rgba(66, 217, 255, 0.34); }
.orchard { border-color: rgba(103, 255, 177, 0.28); background: linear-gradient(135deg, rgba(58, 36, 29, 0.34), rgba(3, 6, 10, 0.64)); }
.exit-pane { border-color: rgba(141, 92, 255, 0.46); }

.map-ticks { height: 58px; margin-top: 20px; background: linear-gradient(90deg, rgba(66, 217, 255, 0.25), transparent); position: relative; }
.map-ticks b { position: absolute; width: 1px; height: 24px; background: var(--green); top: 14px; box-shadow: 0 0 12px var(--green); }
.map-ticks b:nth-child(1) { left: 12%; } .map-ticks b:nth-child(2) { left: 38%; height: 38px; } .map-ticks b:nth-child(3) { left: 67%; } .map-ticks b:nth-child(4) { left: 82%; height: 32px; }
.floating-output { position: absolute; padding: 10px 14px; border: 1px solid rgba(103, 255, 177, 0.2); background: rgba(3, 6, 10, 0.42); color: var(--lavender); box-shadow: 0 0 26px rgba(103, 255, 177, 0.1); }
.floating-output.one { right: 11%; top: 26%; }
.floating-output.two { right: 20%; bottom: 28%; color: var(--green); }
.signal-list { margin: 0; padding-left: 18px; color: rgba(243, 247, 234, 0.78); font-size: 12px; line-height: 2; }
.coordinate-cloud span { position: absolute; color: var(--green); font-family: var(--mono); font-size: 12px; text-shadow: 0 0 18px rgba(103, 255, 177, 0.85); }
.coordinate-cloud span:nth-child(1) { right: 18%; top: 31%; } .coordinate-cloud span:nth-child(2) { right: 31%; bottom: 31%; } .coordinate-cloud span:nth-child(3) { left: 49%; top: 18%; }
blockquote { margin: 10px 0 0; font-family: var(--display); font-size: 24px; line-height: 1.25; letter-spacing: -0.04em; color: var(--soft-white); }
.clover { position: absolute; right: 28px; bottom: 22px; width: 42px; height: 42px; transform: rotate(22deg); }
.clover i { position: absolute; width: 22px; height: 22px; border-radius: 22px 22px 3px 22px; background: rgba(103, 255, 177, 0.45); box-shadow: 0 0 18px rgba(103, 255, 177, 0.35); }
.clover i:nth-child(2) { right: 0; transform: rotate(90deg); } .clover i:nth-child(3) { bottom: 0; transform: rotate(180deg); } .clover i:nth-child(4) { right: 0; bottom: 0; transform: rotate(270deg); }
.train-window { position: absolute; right: 12%; bottom: 33%; width: 220px; height: 120px; border: 1px solid rgba(66, 217, 255, 0.3); background: rgba(66, 217, 255, 0.08); box-shadow: 0 0 60px rgba(66, 217, 255, 0.12), inset 0 0 40px rgba(215, 204, 255, 0.08); }
.train-window span { position: absolute; inset: 18px; border: 1px solid rgba(215, 204, 255, 0.16); background: linear-gradient(135deg, rgba(141, 92, 255, 0.22), rgba(66, 217, 255, 0.11)); }
.run-again { border: 1px solid rgba(103, 255, 177, 0.5); background: rgba(103, 255, 177, 0.08); color: var(--green); font-family: var(--mono); padding: 11px 16px; cursor: pointer; box-shadow: 0 0 25px rgba(103, 255, 177, 0.12); }
.moon-brackets { position: absolute; right: 12%; top: 30%; color: var(--lavender); font-size: 28px; text-shadow: 0 0 30px rgba(215, 204, 255, 0.5); }

@keyframes blink { 50% { opacity: 0; } }
@keyframes auroraDrift { from { background-position: 0 0; } to { background-position: 180px 60px; } }
@keyframes fireflyPulse { 0%, 100% { filter: blur(0); opacity: 0.95; border-radius: 2px; } 50% { filter: blur(1px); opacity: 0.62; border-radius: 50%; } }

@media (max-width: 820px) {
  .site-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; right: 0; top: 0; height: auto; min-height: 168px; z-index: 10; padding: 14px; }
  .file-tree { grid-template-columns: repeat(4, 1fr); gap: 6px; }
  .tree-node { min-height: 62px; padding: 9px; }
  .tree-node span { font-size: 12px; }
  .rail-footer, .rail-status { display: none; }
  .stage { padding-top: 168px; }
  .scene { padding: 178px 22px 18vh; }
  .memory-pane { width: 100%; }
  h1, h2 { font-size: clamp(38px, 13vw, 72px); }
}