/* =====================================================================
   T01 Decision Wind Tunnel (homepage #tunnel). Section-scoped styles.
   Owned by the tunnel. site.css stays untouched; every selector starts with #tunnel.
   Layouts: desktop from 1024px, tablet 760 to 1023px, mobile below 760px.
   ===================================================================== */
#tunnel{background:var(--ink);color:var(--bone);overflow:clip}
#tunnel [hidden]{display:none !important}
#tunnel .wt-stage{position:relative;width:100%;height:100vh;height:100svh;overflow:hidden;background:var(--ink);isolation:isolate}
html:not(.js) #tunnel .wt-stage{display:none}

/* layer 1: canvas or static svg */
#tunnel .wt-canvas,#tunnel .wt-static{position:absolute;left:0;top:0;width:100%;height:100%;max-width:none;z-index:0;touch-action:pan-y}
#tunnel .wt-static path{fill:none;stroke-width:1}
#tunnel .wt-static .h{stroke:rgba(244,241,234,.55)}
#tunnel .wt-static .s{stroke:var(--warn);stroke-dasharray:4 4}
#tunnel .wt-static .b{stroke:rgba(244,241,234,.38)}
#tunnel .wt-static .wake{opacity:.85}

/* band rules, labels, body, separation marks */
#tunnel .wt-rules{position:absolute;inset:0;z-index:1;pointer-events:none}
#tunnel .wt-rules i{position:absolute;left:0;width:calc(var(--g) + 10px);height:1px;background:var(--hair-bone)}
#tunnel .wt-bands{position:absolute;inset:0;z-index:2;pointer-events:none}
#tunnel .wt-band{position:absolute;left:var(--g);max-width:var(--lw,220px);transform:translateY(-50%);
  font-family:var(--mono);font-size:10px;line-height:1.35;letter-spacing:.06em;color:var(--bone-2);
  text-shadow:0 0 6px var(--ink),0 0 2px var(--ink);transition:color .3s var(--ease)}
#tunnel .wt-band b,#tunnel .wt-band i{font-weight:400;font-style:normal}
#tunnel .wt-band i{color:var(--bone)}
#tunnel .wt-band[data-status="strains"]{color:#b9b4a6}
#tunnel .wt-band[data-status="breaks"],#tunnel .wt-band[data-status="breaks"] i{color:var(--verm)}
#tunnel .wt-band.is-hot{color:var(--bone)}
#tunnel .wt-body{position:absolute;z-index:3;display:flex;align-items:center;justify-content:center;padding:0 clamp(12px,1.6vw,26px);
  background:var(--ink);border:1px solid rgba(244,241,234,.6);text-align:center;pointer-events:none;transform-origin:50% 50%;
  box-shadow:0 0 0 6px rgba(22,21,19,.55)}
#tunnel .wt-body-label{width:100%;min-width:0;max-width:100%;font-family:var(--arch);font-weight:700;font-size:clamp(13px,1.4vw,22px);line-height:1.15;letter-spacing:-.01em;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}
#tunnel .wt-marks{position:absolute;inset:0;z-index:4;pointer-events:none}
#tunnel .wt-mark{position:absolute;width:22px;height:1px;background:var(--verm);transform:translateY(-.5px)}
#tunnel .wt-mark b{position:absolute;left:28px;top:-6px;white-space:nowrap;font-family:var(--mono);font-weight:500;font-size:9px;
  line-height:1.2;letter-spacing:.12em;text-transform:uppercase;color:var(--verm);text-shadow:0 0 5px var(--ink);overflow:hidden;text-overflow:ellipsis}
#tunnel .wt-probe{position:absolute;z-index:5;left:0;top:0;max-width:240px;padding:6px 9px;font-family:var(--mono);font-size:10px;
  letter-spacing:.06em;line-height:1.35;background:rgba(22,21,19,.92);border:1px solid var(--hair-bone);color:var(--bone);
  pointer-events:none;opacity:0;transition:opacity .2s}
#tunnel .wt-probe[data-status="breaks"]{border-color:var(--verm);color:var(--verm)}
#tunnel .wt-probe.is-on{opacity:1}
#tunnel .wt-ghost{position:absolute;z-index:5;left:50%;top:calc(var(--nav-h) + 16px);transform:translateX(-50%);color:var(--verm);
  opacity:0;transition:opacity .3s;pointer-events:none;white-space:nowrap}
#tunnel .wt-ghost.is-on{opacity:.9}

/* top labels and intro caption */
#tunnel .wt-top{position:absolute;z-index:5;left:var(--g);top:calc(var(--nav-h) + 14px);display:flex;flex-wrap:wrap;align-items:center;
  gap:8px 18px;max-width:calc(72% - var(--g) * 2);pointer-events:none}
#tunnel .wt-eyebrow{color:var(--bone)}
#tunnel .wt-caption{position:absolute;z-index:5;left:var(--g);top:calc(var(--nav-h) + 64px);max-width:min(760px,62vw);pointer-events:none;
  text-shadow:0 0 18px var(--ink)}
#tunnel .wt-caption h2{font-weight:900;font-size:clamp(30px,min(5vw,8vh),84px);letter-spacing:-.03em;line-height:.95}
#tunnel .wt-caption p{margin-top:16px;max-width:42ch;font-size:16px;line-height:1.5;color:var(--bone-2)}
#tunnel.wt-unpinned .wt-caption{top:calc(var(--nav-h) + 44px);max-width:calc(72% - var(--g) * 2)}
#tunnel.wt-unpinned .wt-caption h2{font-size:clamp(20px,2.2vw,30px)}
#tunnel.wt-unpinned .wt-caption p{margin-top:6px;font-size:14px;max-width:70ch}

/* controls desk (bottom left) */
#tunnel .wt-sheet{display:contents}
#tunnel .wt-tabs{display:none}
#tunnel .wt-desk{position:absolute;z-index:6;left:var(--g);bottom:20px;width:calc(72% - var(--g) - 24px);max-width:1040px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 24px;padding:14px 16px 12px;
  background:rgba(22,21,19,.88);border:1px solid var(--hair-bone)}
#tunnel .wt-presets{grid-column:1/-1}
#tunnel .presets button{min-height:36px;color:var(--bone)}
#tunnel .presets button:hover,#tunnel .presets button[aria-pressed="true"]{background:var(--bone);color:var(--ink);border-color:var(--bone)}
#tunnel .wt-field{grid-column:1/2;min-width:0}
#tunnel .wt-field > label{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--bone-2);margin-bottom:6px}
#tunnel .wt-arch{margin-top:6px;font-family:var(--mono);font-size:10px;letter-spacing:.08em;line-height:1.5;color:var(--bone-2)}
#tunnel .wt-arch:empty{display:none}
#tunnel .wt-empty{margin-top:8px;padding:12px;text-align:left}
#tunnel .wt-empty .presets{margin-top:10px}
#tunnel .wt-btns{grid-column:2/3;align-self:end;justify-content:flex-end;padding-bottom:2px}
#tunnel .wt-btns .btn{min-height:44px}
#tunnel .wt-levers{grid-column:1/-1;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px 22px}
#tunnel .wt-levers .ctl label{margin-bottom:0;font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--bone-2)}
#tunnel .wt-levers .ctl label span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#tunnel .wt-levers .ctl output{color:var(--bone)}
#tunnel input[type=range]{height:32px}
#tunnel .wt-edge{grid-column:1/-1;margin-top:0;color:var(--bone)}

/* readout (right column) */
#tunnel .wt-readout{position:absolute;z-index:6;left:72%;right:var(--g);top:calc(var(--nav-h) + 14px);bottom:46px;overflow-y:auto;
  overscroll-behavior:auto;padding:0 6px 16px 20px;background:rgba(22,21,19,.84);border-left:1px solid var(--hair-bone);
  scrollbar-width:thin;scrollbar-color:var(--hair-bone) transparent}
#tunnel .wt-drawer-btn{display:none}
#tunnel .wt-drag{display:flex;flex-direction:column;gap:6px;padding-bottom:10px;border-bottom:1px solid var(--bone)}
#tunnel .wt-drag-num{font-weight:900;font-size:clamp(52px,5.4vw,92px);line-height:.9;letter-spacing:-.04em}
#tunnel .wt-drag-cap,#tunnel .wt-seeds{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;line-height:1.5;color:var(--bone-2)}
#tunnel .wt-seeds{margin:10px 0 2px}
#tunnel .wt-bps{list-style:none}
#tunnel .wt-bp{padding:12px 0 12px;border-bottom:1px solid var(--hair-bone)}
#tunnel .wt-bp-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 10px}
#tunnel .wt-bp-name{font-weight:700;font-size:14px;line-height:1.25;flex:1 1 9em;min-width:0}
#tunnel .wt-bp-share{font-size:10px;letter-spacing:.1em;color:var(--bone-2)}
#tunnel .wt-bp .light{font-size:10px}
#tunnel .wt-bp[data-status="strains"] .light{color:#c9c4b6}
#tunnel .wt-bar{position:relative;height:16px;margin:8px 0 2px;
  background:linear-gradient(90deg,transparent calc(40% - .5px),var(--bone-2) calc(40% - .5px),var(--bone-2) calc(40% + .5px),transparent calc(40% + .5px),
  transparent calc(70% - .5px),var(--verm) calc(70% - .5px),var(--verm) calc(70% + .5px),transparent calc(70% + .5px)) no-repeat 0 3px / 100% 10px}
#tunnel .wt-bar-track{position:absolute;left:0;right:0;top:50%;height:1px;background:var(--hair-bone)}
#tunnel .wt-bar-band{position:absolute;top:calc(50% - 4px);height:8px;background:var(--bone);opacity:.75;transition:left .4s var(--ease),width .4s var(--ease)}
#tunnel .wt-bp[data-status="breaks"] .wt-bar-band{background:var(--verm);opacity:.85}
#tunnel .wt-bar-mid{position:absolute;top:0;height:16px;width:2px;margin-left:-1px;background:var(--bone);transition:left .4s var(--ease)}
#tunnel .wt-bp[data-status="breaks"] .wt-bar-mid{background:var(--verm)}
#tunnel .wt-bar.is-range .wt-bar-mid{background:var(--ink);box-shadow:0 0 0 1px var(--bone)}
#tunnel .wt-bar-v{display:block;font-size:9px;letter-spacing:.08em;color:var(--bone-2)}
#tunnel .wt-line{display:block;margin-top:6px;font-size:13px;line-height:1.45;color:var(--bone-2)}
#tunnel .wt-bp[data-status="breaks"] .wt-line{color:var(--bone)}
#tunnel .wt-summary{margin-top:14px;font-size:15px;line-height:1.45;font-weight:500}
#tunnel .wt-summary a{color:var(--bone);text-decoration:underline;text-underline-offset:3px}
#tunnel .wt-record{display:flex;align-items:center;min-height:44px;margin-top:10px;padding:0 14px;border:1px solid var(--bone);
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;justify-content:space-between;gap:12px;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s}
#tunnel .wt-record:hover{background:var(--verm);border-color:var(--verm);color:var(--bone)}
#tunnel .wt-simline{margin-top:14px}
#tunnel .wt-limits{margin-top:10px;border-top:1px solid var(--hair-bone)}
#tunnel .wt-limits summary{cursor:pointer;list-style:none;min-height:44px;display:flex;align-items:center;gap:10px;font-family:var(--mono);
  font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--bone-2)}
#tunnel .wt-limits summary::-webkit-details-marker{display:none}
#tunnel .wt-limits summary::before{content:"+";font-size:14px;transition:transform .3s var(--ease)}
#tunnel .wt-limits[open] summary::before{transform:rotate(45deg);color:var(--verm)}
#tunnel .wt-limits ol{list-style:none;counter-reset:lim;padding-bottom:6px}
#tunnel .wt-limits li{counter-increment:lim;display:grid;grid-template-columns:28px 1fr;gap:6px;padding:6px 0;font-size:13px;line-height:1.45;color:var(--bone-2)}
#tunnel .wt-limits li::before{content:"0" counter(lim);font-family:var(--mono);font-size:10px;color:var(--verm);padding-top:2px}
#tunnel .wt-limits a{color:var(--bone);text-decoration:underline;text-underline-offset:3px}
#tunnel .formula{margin-top:0}
#tunnel .formula pre{font-size:11px}
#tunnel .local-note{margin-top:12px}
#tunnel .scene-tag{z-index:7}
#tunnel .wt-noscript{padding:14vh var(--g)}
#tunnel .wt-noscript h2{font-size:clamp(30px,5vw,72px);margin:16px 0}
#tunnel .wt-noscript .table-wrap{margin:5vh 0 3vh;max-width:1100px}
#tunnel .wt-noscript .mono{color:var(--bone-2)}

/* tablet: readout becomes a bottom drawer */
@media (min-width:760px) and (max-width:1023px){
  #tunnel .wt-top,#tunnel.wt-unpinned .wt-caption{max-width:calc(100% - var(--g) * 2)}
  #tunnel .wt-desk{width:calc(58% - var(--g) - 8px);grid-template-columns:minmax(0,1fr)}
  #tunnel .wt-btns{grid-column:1/-1;justify-content:flex-start}
  #tunnel .wt-levers{grid-template-columns:repeat(2,minmax(0,1fr))}
  #tunnel .wt-readout{left:auto;top:auto;right:var(--g);bottom:20px;width:calc(42% - var(--g) - 8px);max-height:calc(100% - var(--nav-h) - 40px);
    border:1px solid var(--hair-bone);padding:10px 14px 12px;background:rgba(22,21,19,.92)}
  #tunnel .wt-drawer-btn{display:flex;align-items:center;justify-content:space-between;width:100%;min-height:44px;margin-bottom:6px;
    font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--bone-2);border-bottom:1px solid var(--hair-bone)}
  #tunnel .wt-drawer-btn::after{content:"+";font-size:14px;transition:transform .3s var(--ease)}
  #tunnel .wt-drawer-btn[aria-expanded="true"]::after{transform:rotate(45deg);color:var(--verm)}
  #tunnel .wt-drag-num{font-size:44px}
  #tunnel .wt-readout[data-open="false"] .wt-rest,
  #tunnel .wt-readout[data-open="false"] .wt-seeds,
  #tunnel .wt-readout[data-open="false"] .wt-bp:nth-child(n+2){display:none}
  #tunnel .scene-tag{display:none}
}

/* mobile: canvas on top, bottom sheet with two tabs */
@media (max-width:759px){
  /* the stage grows with the sheet: no nested scroll inside the controls */
  #tunnel .wt-stage{display:flow-root;height:auto;min-height:100vh;min-height:100svh;overflow:visible}
  #tunnel .wt-canvas,#tunnel .wt-static{height:56vh;height:56svh}
  #tunnel .wt-top{top:calc(var(--nav-h) + 4px);max-width:calc(100% - var(--g) * 2);gap:6px 12px}
  #tunnel .wt-top .label-sim{font-size:9px;letter-spacing:.12em;white-space:normal}
  #tunnel.wt-unpinned .wt-caption,#tunnel .wt-caption{top:calc(var(--nav-h) + 52px);max-width:calc(100% - var(--g) * 2)}
  #tunnel.wt-unpinned .wt-caption h2{font-size:18px}
  #tunnel.wt-unpinned .wt-caption p{font-size:12.5px;line-height:1.4;margin-top:3px}
  #tunnel .wt-band b{display:none}
  #tunnel .wt-mark b{font-size:8px;letter-spacing:.06em;white-space:normal;overflow:visible;text-overflow:clip;line-height:1.2;top:-5px;width:max-content}
  #tunnel .wt-body-label{font-size:12px}
  #tunnel .wt-ghost{top:calc(56svh - 26px)}
  #tunnel .wt-sheet{display:flex;flex-direction:column;position:relative;z-index:6;margin-top:56vh;margin-top:56svh;min-height:44vh;min-height:44svh;
    background:var(--ink);border-top:1px solid var(--bone)}
  #tunnel .wt-tabs{display:flex;flex:none;border-bottom:1px solid var(--hair-bone)}
  #tunnel .wt-tabs button{flex:1;min-height:44px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--bone-2)}
  #tunnel .wt-tabs button[aria-selected="true"]{color:var(--bone);box-shadow:inset 0 -2px 0 var(--verm)}
  #tunnel .wt-desk,#tunnel .wt-readout{position:static;display:block;flex:1 1 auto;min-height:0;width:auto;max-width:none;overflow:visible;
    border:0;background:none;padding:12px var(--g) 18px}
  #tunnel .wt-sheet[data-tab="decision"] .wt-readout,#tunnel .wt-sheet[data-tab="readout"] .wt-desk{display:none}
  #tunnel .wt-presets{flex-wrap:nowrap;overflow-x:auto;margin:0 calc(var(--g) * -1);padding:0 var(--g) 4px;scrollbar-width:none}
  #tunnel .wt-presets::-webkit-scrollbar{display:none}
  #tunnel .presets button{min-height:44px;white-space:nowrap;flex:none}
  #tunnel .wt-field{margin-top:12px}
  #tunnel .wt-levers{grid-template-columns:1fr;gap:4px;margin-top:10px}
  #tunnel .wt-btns{margin-top:10px}
  #tunnel input[type=range]{height:44px}
  #tunnel input[type=range]::-webkit-slider-thumb{width:44px;height:44px;margin-top:-21.5px;border:13px solid transparent;background-clip:padding-box;box-sizing:border-box}
  #tunnel input[type=range]::-moz-range-thumb{width:18px;height:18px;border:13px solid transparent;background-clip:padding-box}
  #tunnel .wt-readout{padding-top:10px}
  #tunnel .wt-drag-num{font-size:48px}
  #tunnel .scene-tag{top:calc(56svh - 24px);bottom:auto}
  #tunnel .wt-edge{margin-top:12px}
}