:root {
  --bg: #07090a;
  --bg-2: #0e1314;
  --panel: rgba(12, 17, 18, 0.9);
  --panel-solid: #111819;
  --ink: #ece9e1;
  --ink-2: #a9b6b3;
  --line: #27393b;
  --teal: #5fd6c8;
  --amber: #f2b552;
  --amber-ink: #1d1300;
  --red: #ff6b5a;
  --focus: #ffe08a;
  --radius: 12px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); }
body { font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; -webkit-text-size-adjust: 100%; }
a { color: var(--teal); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.sub { display: block; color: var(--ink-2); font-size: 0.8em; font-weight: 400; }
.fine { color: var(--ink-2); font-size: 0.88rem; }

/* ---------- start ---------- */
.start { max-width: 760px; margin: 0 auto; padding: 32px 16px 56px; }
.kicker { color: var(--ink-2); font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; margin: 0; }
.start h1 { font: 700 clamp(2.4rem, 8vw, 4rem)/1.05 Georgia, "Times New Roman", serif; margin: 0.2em 0 0.3em; letter-spacing: 0.01em; text-shadow: 0 0 24px rgba(242, 181, 82, 0.25); }
.pitch { font-size: 1.12rem; color: var(--ink); }
.content-note { color: var(--ink-2); font-size: 0.92rem; border-left: 3px solid var(--line); padding-left: 10px; }
.notice { background: #2c1210; border: 1px solid var(--red); padding: 10px 12px; border-radius: var(--radius); }
.start-form { display: grid; gap: 16px; margin-top: 18px; }
.modes { display: grid; gap: 10px; }
fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; }
legend { padding: 0 6px; color: var(--ink-2); }
label { display: flex; gap: 8px; align-items: center; min-height: 44px; }
input[type="radio"], input[type="checkbox"] { width: 22px; height: 22px; accent-color: var(--amber); }
.seed input { background: var(--panel-solid); color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-size: 1rem; width: 8em; min-height: 44px; }

/* ---------- buttons ---------- */
.btn { min-height: 48px; min-width: 48px; padding: 10px 16px; border-radius: var(--radius); border: 2px solid var(--line);
  background: var(--panel-solid); color: var(--ink); font: 600 1rem/1.2 inherit; cursor: pointer; touch-action: manipulation; text-align: center; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--amber); border-color: var(--amber); color: var(--amber-ink); }
.btn-primary .sub { color: #4b3407; }
.btn-secondary { background: transparent; }
.btn-big { padding: 14px 18px; font-size: 1.08rem; text-align: left; }
.btn-ghost { background: transparent; border-color: transparent; color: var(--ink-2); min-height: 40px; padding: 6px 10px; font-weight: 500; }
.btn-ghost:hover { color: var(--ink); }
.btn-trace { border-color: var(--red); color: #ffd6d0; background: #24100d; }
.btn-trace .sub { color: #f0a59a; }
.btn-door { border-color: #6c5536; background: #22190f; }
.btn-hang { border-color: var(--line); }
.btn-round { border-radius: 999px; width: 48px; padding: 0; }
.hl { box-shadow: 0 0 0 4px rgba(242, 181, 82, 0.55); animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 8px rgba(242, 181, 82, 0.15); } }

/* ---------- game UI ---------- */
.ui { max-width: 1240px; margin: 0 auto; padding: 10px 12px 28px; display: grid; gap: 12px;
  grid-template-columns: minmax(300px, 380px) minmax(0, 1fr); grid-template-areas: "top top" "left right"; align-items: start; }
.ui > .top { grid-area: top; }
.col-left { grid-area: left; display: grid; gap: 12px; }
.col-right { grid-area: right; display: grid; gap: 10px; }
@media (max-width: 860px) {
  .ui:not(.ui-ar) { display: flex; flex-direction: column; }
  .ui:not(.ui-ar) .col-left, .ui:not(.ui-ar) .col-right { display: contents; }
  .ui:not(.ui-ar) .guide { order: 1; }
  .ui:not(.ui-ar) .feed-slot { order: 2; }
  .ui:not(.ui-ar) .caption { order: 3; }
  .ui:not(.ui-ar) .controls { order: 4; }
  .ui:not(.ui-ar) .casefile { order: 5; }
}
.top { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.top-buttons { margin-left: auto; display: flex; flex-wrap: wrap; }
.chip { background: var(--panel); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; font-weight: 600; font-size: 0.92rem; }
.pips { color: var(--amber); letter-spacing: 1px; }
.feed { width: 100%; height: auto; border-radius: var(--radius); border: 1px solid var(--line); display: block; background: #000; }
/* guide */
.guide { background: linear-gradient(180deg, #16120b, #0f0d09); border: 1px solid #5a4630; border-radius: var(--radius); padding: 12px 14px; }
.guide h2 { font: 700 1.35rem/1.2 Georgia, serif; margin: 0.15em 0 0.35em; }
.guide .tag { color: var(--amber); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.75rem; margin: 0; }
.guide .do { background: #2d2312; border-left: 4px solid var(--amber); padding: 8px 10px; border-radius: 6px; font-size: 1.02rem; }
.guide .quantum, .explain .quantum { background: #0f1c1d; border-left: 4px solid var(--teal); padding: 8px 10px; border-radius: 6px; font-size: 0.95rem; }
.qtag { display: inline-block; font: 700 0.68rem/1 system-ui, sans-serif; letter-spacing: 0.08em; text-transform: uppercase; color: #07201d; background: var(--teal); border-radius: 4px; padding: 3px 5px; margin-right: 4px; vertical-align: 1px; }
.explain { border: 1px dashed #5a4630; border-radius: 8px; padding: 6px 10px; margin: 8px 0; }
.ex-h { margin: 0; font-weight: 700; color: var(--amber); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; }
.stepper { list-style: none; display: flex; flex-wrap: wrap; gap: 4px; padding: 0; margin: 0 0 8px; }
.stepper li { font-size: 0.78rem; color: var(--ink-2); border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px 2px 3px; display: flex; align-items: center; gap: 4px; }
.stepper .num { display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; background: #1b2224; font-weight: 700; font-size: 0.7rem; }
.stepper li.now { color: var(--ink); border-color: var(--amber); }
.stepper li.now .num { background: var(--amber); color: var(--amber-ink); }
.stepper li.done .num { background: var(--teal); color: #06201d; }
.goal-list { padding-left: 1.2em; margin: 6px 0; }
.goal-list li { margin: 6px 0; }
.win summary, .vp summary { cursor: pointer; min-height: 36px; display: flex; align-items: center; color: var(--ink-2); font-weight: 600; }
/* case file */
.casefile { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; }
.answer { margin: 6px 0 10px; }
.answer-h { font-weight: 600; margin-bottom: 4px; }
.answer-h .sub { display: inline; margin-left: 6px; }
.q { font-weight: 800; letter-spacing: 0.06em; color: var(--amber); }
.tug { display: flex; align-items: center; gap: 8px; }
.tug .bar { position: relative; flex: 1; height: 14px; background: #3a1512; border-radius: 7px; overflow: hidden; border: 1px solid var(--line); }
.tug .fill { position: absolute; left: 0; top: 0; bottom: 0; background: linear-gradient(90deg, #5fd6c8, #9ff0e6); transition: width 0.4s; }
.tug .mid { position: absolute; left: 50%; top: -2px; bottom: -2px; width: 2px; background: rgba(255,255,255,0.5); }
.end-l { color: var(--teal); font-weight: 700; font-size: 0.85rem; }
.end-r { color: var(--red); font-weight: 700; font-size: 0.85rem; }
.tally { display: flex; gap: 18px; margin: 2px 0; font-size: 1.05rem; }
.tally strong { color: var(--amber); letter-spacing: 2px; }
.caption { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px; min-height: 5.2em; }
.cap-line { font: 600 1.3rem/1.35 Georgia, serif; margin: 0 0 4px; }
.cap-meta { margin: 0; color: var(--ink-2); font-size: 0.9rem; }
.flash-clear { animation: fclear 1.2s ease-out; }
.flash-static { animation: fstatic 1s steps(6); }
@keyframes fclear { from { box-shadow: 0 0 0 3px rgba(255, 240, 200, 0.6); } to { box-shadow: none; } }
@keyframes fstatic { 0%, 40%, 80% { background: #2b2f30; } 20%, 60%, 100% { background: var(--panel); } }
.controls { display: grid; gap: 10px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; }
.dial-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dial { width: 132px; height: 132px; border-radius: 50%; cursor: pointer; }
.dial svg { width: 100%; height: 100%; }
.knob { fill: #1b2224; stroke: #3a4a4c; stroke-width: 2; }
.needle { stroke: var(--amber); stroke-width: 4; stroke-linecap: round; }
.dk circle { fill: #162022; stroke: #3a4a4c; stroke-width: 1.5; }
.dk text { fill: var(--ink-2); font: 700 9px system-ui, sans-serif; pointer-events: none; }
.dk.on circle { fill: var(--amber); stroke: var(--amber); }
.dk.on text { fill: var(--amber-ink); }
.dial-label { min-width: 8em; }
.call-row, .decide-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.decide-row { grid-template-columns: 1fr 1fr 1fr; }
.ev-h { font-size: 1rem; margin: 0 0 6px; color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.08em; }
.meter-label { margin-bottom: 4px; }
.meter-bar { height: 12px; background: #2a1512; border-radius: 6px; overflow: hidden; border: 1px solid var(--line); }
.meter-bar span { display: block; height: 100%; background: linear-gradient(90deg, #5fd6c8, #9ff0e6); transition: width 0.4s; }
.doors { margin: 8px 0; }
.chart { width: 100%; height: auto; display: block; }
.ch-axis { stroke: #50605f; stroke-width: 1; }
.ch-grid { stroke: #26302f; stroke-dasharray: 3 3; }
.ch-t { fill: var(--ink-2); font: 10px system-ui, sans-serif; }
.ch-cur { fill: var(--amber); font-weight: 700; }
.ch-dial { fill: rgba(242, 181, 82, 0.08); }
.ch-sister { fill: none; stroke: var(--teal); stroke-width: 2.5; }
.ch-mimic { fill: none; stroke: var(--red); stroke-width: 2; stroke-dasharray: 6 4; }
.ch-pt { fill: var(--ink); stroke: #000; stroke-width: 1; }
.ch-err { stroke: var(--ink); stroke-width: 1.5; opacity: 0.6; }
.ch-n { fill: var(--ink); font: 600 10px system-ui, sans-serif; }
.legend { font-size: 0.82rem; color: var(--ink-2); display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; margin: 4px 0; }
.legend .lg-item { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; width: auto; height: auto; margin: 0; }
.legend span:not(.lg-item) { display: inline-block; width: 18px; height: 0; vertical-align: middle; margin-right: 2px; }
.lg-sister { border-top: 3px solid var(--teal); }
.lg-mimic { border-top: 3px dashed var(--red); }
.lg-pt { width: 9px !important; height: 9px !important; border-radius: 50%; background: var(--ink); }
.log { padding-left: 1.4em; margin: 8px 0 0; font-size: 0.88rem; max-height: 220px; overflow: auto; }
.log li { margin: 3px 0; }
.lg-kind { font-weight: 700; }
.lg-kind.trace { color: var(--red); }
.lg-text { color: var(--ink-2); }

/* ---------- sheets ---------- */
.sheet-wrap { position: fixed; inset: 0; z-index: 20; background: rgba(0, 0, 0, 0.72); display: flex; align-items: center; justify-content: center; padding: 12px; }
.sheet { background: var(--panel-solid); border: 1px solid var(--line); border-radius: 16px; padding: 20px; max-width: 620px; width: 100%; max-height: 92vh; overflow: auto; box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6); }
.sheet h2 { font: 700 1.7rem/1.2 Georgia, serif; margin: 0.1em 0 0.4em; }
.sheet .tag { color: var(--amber); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.8rem; margin: 0; }
.sheet .tag.good { color: var(--teal); }
.sheet .tag.bad { color: var(--red); }
.story { font: 1.12rem/1.55 Georgia, serif; }
.intel { background: #141c1d; border-left: 3px solid var(--teal); padding: 8px 12px; border-radius: 6px; }
.facts { padding-left: 1.2em; }
.formula { font: 600 1.1rem ui-monospace, Menlo, monospace; background: #141c1d; padding: 8px 12px; border-radius: 8px; }
.circuit { font: 0.8rem/1.35 ui-monospace, Menlo, monospace; background: #0b1011; padding: 10px; border-radius: 8px; overflow-x: auto; }
.sheet-buttons { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; margin-top: 14px; }
.check { min-height: 44px; }
.score-table { border-collapse: collapse; width: 100%; margin: 10px 0; }
.score-table th, .score-table td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; }
.toast { position: fixed; left: 50%; bottom: max(16px, env(safe-area-inset-bottom)); transform: translateX(-50%); z-index: 30; background: #2c1210; border: 1px solid var(--red); border-radius: var(--radius); padding: 10px 14px; max-width: 90vw; }

/* ---------- AR overlay ---------- */
.xr-overlay, .marker-view, .gyro-view { position: fixed; inset: 0; }
.marker-view, .gyro-view { background: #000; }
.marker-view video, .marker-view canvas, .gyro-view video, .gyro-view canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.marker-ui, .xr-ui, .gyro-ui { position: absolute; inset: 0; pointer-events: none; }
.ui-ar { position: absolute; inset: 0; max-width: none; padding: max(8px, env(safe-area-inset-top)) 8px max(8px, env(safe-area-inset-bottom));
  display: flex; flex-direction: column; justify-content: space-between; gap: 6px; pointer-events: none; }
.ui-ar > * { pointer-events: auto; }
.ui-ar .caption { pointer-events: none; min-height: 0; padding: 6px 10px; background: rgba(8, 11, 12, 0.78); }
.ui-ar .cap-line { font-size: 1.05rem; }
.ui-ar .col-left, .ui-ar .col-right { display: flex; flex-direction: column; gap: 6px; }
.ui-ar .col-left { pointer-events: none; }
.ui-ar .col-left > * { pointer-events: auto; }
.ui-ar .col-right { margin-top: auto; }
.ui-ar .guide { padding: 6px 10px; background: rgba(22, 18, 11, 0.86); max-height: 30vh; overflow: auto; }
.ui-ar .guide summary { min-height: 36px; display: flex; align-items: center; cursor: pointer; font-weight: 600; color: var(--amber); font-size: 0.88rem; }
.ui-ar .guide .tag { display: none; }
.ui-ar .guide .do { padding: 6px 8px; font-size: 0.92rem; }
.ui-ar .guide .sheet-buttons { margin-top: 4px; }
.ui-ar .dial { width: 76px !important; height: 76px !important; }
.ui-ar .dial-label .sub { display: none; }
.ui-ar .cap-meta { font-size: 0.8rem; }
.ex-ar { font-size: 0.85rem; margin: 4px 0; }
.ui-ar .guide h2 { font-size: 1.1rem; }
.ui-ar .guide p { margin: 6px 0; font-size: 0.9rem; }
.ui-ar .stepper { display: none; }
.ui-ar .controls { margin-top: auto; padding: 6px; gap: 6px; background: rgba(8, 11, 12, 0.82); }
.ui-ar .dial { width: 92px; height: 92px; }
.ui-ar .btn { min-height: 44px; padding: 6px 8px; font-size: 0.92rem; }
.ui-ar .btn .sub { display: none; }
.ui-ar .casefile { padding: 4px 10px; background: rgba(8, 11, 12, 0.82); max-height: 34vh; overflow: auto; }
.ui-ar .casefile > details > summary { min-height: 40px; display: flex; align-items: center; cursor: pointer; font-weight: 600; }
.ui-ar .chip { font-size: 0.8rem; padding: 3px 8px; background: rgba(8, 11, 12, 0.8); }
.ui-ar .top-buttons .btn { background: rgba(8, 11, 12, 0.8); min-height: 40px; }
.ui-ar .sheet-wrap { pointer-events: auto; }
.place-bar { z-index: 3; position: fixed; left: 10px; right: 10px; bottom: max(10px, env(safe-area-inset-bottom)); background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; }
.place-buttons { display: flex; gap: 8px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.xr-status { position: fixed; top: 40%; left: 50%; transform: translateX(-50%); z-index: 4; background: rgba(8, 11, 12, 0.85); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 12px; margin: 0; max-width: 86vw; text-align: center; pointer-events: none; }

.reduced *, .reduced *::before { animation: none !important; transition: none !important; }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }
@media (forced-colors: active) { .btn { border: 2px solid ButtonText; } }
.ui-ar .col-left { align-items: stretch; }
.ui-ar .body-ar { font-size: 0.86rem; line-height: 1.4; }

/* eraser groups (call 4) */
.pt-all { fill: #9aa6a4; stroke: #000; }
.pt-plus { fill: var(--teal); stroke: #000; }
.pt-minus { fill: #b48cff; stroke: #000; }
.legend .pt-plus-l { background: var(--teal) !important; }
.legend .pt-minus-l { background: #b48cff !important; }
.skip-line { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-top: 6px; }

.scare-layer { position: fixed; inset: 0; width: 100vw; height: 100vh; z-index: 50; pointer-events: none; display: none; }
.status { border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 10px; margin: 6px 0 10px; background: rgba(255,255,255,0.03); }
.status p { margin: 0; }
.status .sub { margin-top: 4px; }
.narr { font-style: italic; border-left: 3px solid var(--line); padding-left: 8px; }
.goal-line { display: block; margin-bottom: 6px; }
.advice { margin-top: 6px; }
.guide-bar { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: -2px 0 6px; }
.guide-name { color: var(--amber); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; }
.btn-toggle { min-height: 32px; padding: 2px 10px; font-size: 0.82rem; }
.guide.compact .guide-bar { margin-bottom: 2px; }
.guide .mini { display: flex; align-items: center; gap: 8px; justify-content: space-between; margin: 0; }
.guide .mini p, p.mini { margin: 0; font-size: 0.95rem; }
.guide .mini-buttons { display: flex; gap: 6px; flex: none; }
.guide .mini-step { display: inline-block; background: var(--amber); color: var(--amber-ink); border-radius: 999px; padding: 0 7px; font-weight: 700; font-size: 0.75rem; margin-right: 4px; }
.ui-ar .guide.compact { max-height: none; }
.btn-erase { background: #2a1c3a; border-color: #8a64c8; color: #e6d8ff; }
.btn-erase:hover { background: #3a2850; }
.lg-kind.erase { color: #b48cff; }
.rule { color: var(--ink-2); font-size: 0.95rem; border-left: 3px solid #8a64c8; padding-left: 8px; margin: 4px 0 8px; }
.btn-hint { min-height: 32px; padding: 2px 10px; font-size: 0.82rem; margin-top: 6px; }
.hint { margin-top: 6px; }