/* Battery Digital Twin Studio — overview first, working surface second. */
#page-studio { max-width: 1600px; margin-inline: auto; }
#page-studio :focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
#page-studio button:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.studio-workspace { display: grid; gap: 44px; }
.studio-explainer,.studio-operations { position: relative; padding: 28px; border: 1px solid var(--border); border-radius: 18px; background: var(--surface); box-shadow: 0 10px 35px rgba(22,30,48,.035); overflow: hidden; }
.studio-section-heading { margin-bottom: 24px; }
#page-studio .studio-section-heading h2 { margin: 0; color: var(--text1); font-family: var(--sans); font-size: clamp(21px,2vw,28px); font-weight: 750; letter-spacing: -.025em; }

/* Explanatory system map. The lower row reads back toward the left, so 03 feeds 04 directly. */
.studio-process-flow { display: grid; grid-template-columns: minmax(145px,1fr) 34px minmax(150px,1.08fr) 34px minmax(178px,1.24fr); grid-template-rows: auto auto; align-items: center; gap: 22px 8px; padding: 22px; border: 1px solid var(--border); border-radius: 14px; background: linear-gradient(rgba(93,126,174,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(93,126,174,.045) 1px,transparent 1px),var(--surface-alt); background-size: 24px 24px,24px 24px,auto; }
.studio-process-node { min-width: 0; min-height: 112px; display: grid; grid-template-columns: 32px minmax(0,1fr); align-items: start; gap: 10px; padding: 14px; border: 1px solid var(--border2); border-radius: 16px; color: var(--text2); background: var(--surface); box-shadow: 0 6px 18px rgba(22,30,48,.045); }
.studio-process-number { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 9px; color: var(--accent); background: var(--accent-light); font-size: 10px; font-weight: 800; }
.studio-process-body { min-width: 0; display: grid; grid-template-columns: 27px minmax(0,1fr); grid-template-rows: auto auto; column-gap: 8px; align-items: center; }
.studio-process-icon { grid-row: 1/3; display: grid; place-items: center; width: 27px; height: 27px; border-radius: 8px; color: #2a5fea; background: color-mix(in srgb,var(--accent) 11%,var(--surface)); }
.studio-process-icon svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.studio-process-node strong { min-width: 0; color: var(--text1); font-size: 12px; font-weight: 750; line-height: 1.25; }
.studio-process-node small { min-width: 0; margin-top: 3px; color: var(--text3); font-size: 10px; line-height: 1.3; }
.studio-process-step-1 .studio-process-icon { color: #16845b; background: rgba(22,163,107,.11); }.studio-process-step-2 .studio-process-icon { color: #7c3aed; background: rgba(124,58,237,.1); }.studio-process-setup .studio-process-icon { color: #d97706; background: rgba(217,119,6,.1); }.studio-process-result .studio-process-icon { color: #16845b; background: rgba(22,163,107,.11); }
.studio-process-calibration { grid-area: 1/5; position: relative; border-color: color-mix(in srgb,var(--accent) 46%,var(--border)); box-shadow: inset 0 0 0 1px color-mix(in srgb,var(--accent) 9%,transparent),0 8px 22px rgba(42,95,234,.07); }
.studio-process-calibration::after { content: ''; position: absolute; top: 100%; left: 50%; width: 1.5px; height: 23px; background: var(--accent); }
.studio-process-calibration::before { content: ''; position: absolute; z-index: 2; left: calc(50% - 4px); top: calc(100% + 15px); width: 7px; height: 7px; border-right: 1.5px solid var(--accent); border-bottom: 1.5px solid var(--accent); transform: rotate(45deg); }
.studio-process-arrow { color: var(--accent); font-style: normal; font-size: 22px; font-weight: 650; text-align: center; }
.studio-process-step-1 { grid-area: 1/1; }.studio-process-arrow-1 { grid-area: 1/2; }.studio-process-step-2 { grid-area: 1/3; }.studio-process-arrow-2 { grid-area: 1/4; }
.studio-process-engine { grid-area: 2/5; }.studio-process-arrow-4 { grid-area: 2/4; }.studio-process-setup { grid-area: 2/3; }.studio-process-arrow-5 { grid-area: 2/2; }.studio-process-result { grid-area: 2/1; }
.studio-process-engine { position: relative; overflow: hidden; border-color: rgba(147,197,253,.68); color: var(--text1); background: linear-gradient(135deg,rgba(96,165,250,.18),rgba(147,197,253,.36) 38%,rgba(125,211,252,.30) 72%,rgba(96,165,250,.20)),var(--surface); box-shadow: 0 10px 25px rgba(96,165,250,.14),inset 0 1px 0 rgba(255,255,255,.38); }
.studio-process-engine .studio-process-number { color: var(--accent); background: rgba(255,255,255,.58); font-size: 9px; }.studio-process-engine strong,.studio-process-engine small { position: relative; color: var(--text1); }.studio-process-engine small { color: var(--text3); }.studio-process-engine .studio-process-icon { color: var(--accent); background: rgba(255,255,255,.5); }
.studio-process-piml-logo svg { width: 20px; height: 20px; stroke-width: 1.3; }.studio-process-piml-logo svg circle { fill: currentColor; stroke: none; }
.studio-process-result { border-color: color-mix(in srgb,#16a36b 38%,var(--border)); }
.studio-piml-explanation { display: grid; gap: 16px; margin-top: 16px; padding: 20px; border: 1px solid color-mix(in srgb,var(--accent) 25%,var(--border)); border-radius: 16px; background: linear-gradient(115deg,color-mix(in srgb,#eff8ff 74%,var(--surface)),color-mix(in srgb,#f8fbff 86%,var(--surface))); }
.studio-piml-heading { display: flex; align-items: center; gap: 11px; color: #10295c; }.studio-piml-heading > span { display: grid; place-items: center; width: 35px; height: 35px; border-radius: 50%; color: #fff; background: linear-gradient(145deg,#2a83ff,#1558d2); font-size: 21px; line-height: 1; }.studio-piml-heading strong { font-size: clamp(18px,1.7vw,24px); letter-spacing: -.025em; }
.studio-piml-panel-grid { display: grid; grid-template-columns: minmax(250px,1fr) minmax(250px,.95fr) minmax(180px,.8fr); align-items: stretch; column-gap: 54px; row-gap: 14px; }
.studio-piml-formula-card,.studio-piml-input-card,.studio-piml-illustration { min-width: 0; padding: 18px; border: 1px solid color-mix(in srgb,var(--accent) 22%,var(--border)); border-radius: 15px; background: color-mix(in srgb,var(--surface) 90%,#fff); box-shadow: 0 7px 20px rgba(30,91,182,.05); }
.studio-piml-formula-card { position: relative; display: flex; flex-direction: column; justify-content: center; gap: 22px; overflow: hidden; }.studio-piml-formula-card::after { content: ''; position: absolute; z-index: 0; right: -12%; bottom: -32%; width: 126%; height: 65%; opacity: .32; background: repeating-radial-gradient(ellipse at 52% 100%,transparent 0 9px,rgba(96,165,250,.62) 10px 11px,transparent 12px 16px); transform: rotate(-5deg); }.studio-piml-formula-card > * { position: relative; z-index: 1; }.studio-piml-formula-card .studio-piml-card-title { position: absolute; top: 18px; left: 18px; right: 18px; }
.studio-piml-card-title { display: flex; align-items: center; gap: 11px; }.studio-piml-card-title > span { display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 44px; border: 1px solid #cfe5ff; border-radius: 14px; color: #216df0; background: linear-gradient(145deg,#f7fbff,#e6f3ff); }.studio-piml-card-title svg { width: 27px; height: 27px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }.studio-piml-card-title strong { color: #10295c; font-size: 15px; font-weight: 780; }.studio-piml-atom { color: #7550e8 !important; }.studio-piml-database { color: #1676ed !important; }
.studio-piml-explanation .studio-formula { min-height: 94px; padding: 14px 0; border: 0; color: #10295c; background: transparent; font-size: clamp(15px,1.35vw,20px); white-space: nowrap; overflow: visible; }.studio-piml-explanation .studio-formula > span { color: #10295c; }
.studio-piml-input-card { position: relative; align-self: start; display: grid; gap: 10px; padding: 14px; }.studio-piml-inputs { display: grid; gap: 6px; }.studio-piml-inputs > span { display: flex; align-items: center; gap: 10px; min-height: 38px; padding: 5px 10px; border: 1px solid #dbeafa; border-radius: 11px; color: #31527e; background: linear-gradient(90deg,#f7fbff,#f2f8ff); }.studio-piml-inputs i { display: grid; place-items: center; flex: 0 0 25px; width: 25px; height: 25px; font-style: normal; }.studio-piml-inputs i svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.85; stroke-linecap: round; stroke-linejoin: round; }.studio-piml-inputs b { min-width: 0; font-size: 12px; font-weight: 690; line-height: 1.3; }.piml-electrical { color: #237cf4; }.piml-thermal { color: #ff8a16; }.piml-operating { color: #14b985; }.piml-physics { color: #7c4dff; }
.studio-piml-formula-card::before,.studio-piml-input-card::after { content: '→'; position: absolute; z-index: 4; top: 50%; right: -39px; color: var(--accent); font: 700 24px/1 var(--sans); transform: translateY(-50%); text-shadow: 0 1px 8px rgba(42,95,234,.16); }.studio-piml-illustration { display: grid; place-items: center; margin: 0; padding: 10px; overflow: hidden; border-color: rgba(147,197,253,.68); background: linear-gradient(135deg,rgba(96,165,250,.18),rgba(147,197,253,.36) 38%,rgba(125,211,252,.30) 72%,rgba(96,165,250,.20)),var(--surface); box-shadow: 0 10px 25px rgba(96,165,250,.14),inset 0 1px 0 rgba(255,255,255,.38); }.studio-piml-illustration img { display: block; width: 100%; max-height: 118px; object-fit: contain; }

/* Compact visual previews keep each step illustrative without turning the map into a dashboard. */
.studio-process-node { display: block; min-height: 148px; padding: 13px; }
.studio-process-node-head { display: flex; align-items: center; gap: 9px; min-width: 0; }.studio-process-node-head .studio-process-number { flex: 0 0 32px; }.studio-process-node-head strong { min-width: 0; font-size: 13px; line-height: 1.2; }
.studio-process-visual { position: relative; min-width: 0; margin: 10px 0 0 41px; }.studio-process-visual > span { color: var(--text3); font-size: 9px; }
.studio-dataset-preview { display: flex; align-items: center; gap: 8px; min-height: 68px; }.studio-dataset-preview img { display: block; width: 44px; height: 66px; object-fit: contain; filter: drop-shadow(0 4px 4px rgba(25,43,78,.16)); }.studio-dataset-preview div { display: grid; gap: 4px; }.studio-dataset-preview b { color: var(--text1); font-size: 12px; }.studio-dataset-preview small { color: #16845b; font-size: 10px; font-weight: 650; }
.studio-feature-preview svg,.studio-results-preview svg { display: block; width: 100%; height: 48px; overflow: visible; }.studio-feature-preview > span,.studio-results-preview > span { display: flex; align-items: center; gap: 5px; margin-top: 4px; color: var(--text3); font-size: 9px; }.feature-grid { fill: none; stroke: var(--border); stroke-width: 1; }.feature-voltage,.feature-temperature,.result-voltage,.result-capacity { fill: none; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }.feature-voltage,.result-voltage { stroke: #2a5fea; }.feature-temperature { stroke: #16a36b; }.result-capacity { stroke: #7c3aed; }.dot-voltage { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #2a5fea; }
.studio-twin-preview { display: grid; place-items: center; min-height: 84px; overflow: hidden; border-radius: 10px; background: radial-gradient(circle at 50% 42%,rgba(65,196,255,.18),transparent 45%),linear-gradient(135deg,#112d69,#1e56b2); }.studio-twin-preview img { z-index: 1; width: 54px; height: 73px; object-fit: contain; filter: brightness(1.28) saturate(.45) drop-shadow(0 0 7px rgba(105,220,255,.9)); }.studio-twin-preview > span:last-child { position: absolute; z-index: 2; right: 8px; bottom: 6px; color: rgba(227,248,255,.88); font-size: 8px; }.studio-twin-orbit { position: absolute; width: 132px; height: 31px; border: 1px solid rgba(96,211,255,.65); border-radius: 50%; }.studio-twin-orbit.orbit-one { transform: rotate(-8deg); }.studio-twin-orbit.orbit-two { transform: rotate(9deg) scale(.74); opacity: .58; }
.studio-scenario-preview { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 6px; }.studio-scenario-preview > span { display: flex; align-items: center; gap: 5px; min-width: 0; min-height: 35px; padding: 6px; border: 1px solid color-mix(in srgb,var(--accent) 16%,var(--border)); border-radius: 8px; color: var(--text2); background: var(--surface); font-size: 9px; font-weight: 650; line-height: 1.2; }.studio-scenario-preview i { display: grid; place-items: center; flex: 0 0 18px; width: 18px; height: 18px; border-radius: 6px; color: #d97706; background: rgba(217,119,6,.1); font-style: normal; font-size: 13px; }.studio-scenario-preview > span:last-child i { color: #0891b2; background: rgba(8,145,178,.1); }
.studio-engine-logo img { position: relative; z-index: 1; mix-blend-mode: normal; }
.studio-process-result { box-shadow: 0 6px 18px rgba(22,163,107,.08); }

/* Five supplied Studio illustrations carry the visual story; the connector treatment is uniform in every direction. */
.studio-process-flow { grid-template-columns: minmax(155px,1fr) 34px minmax(165px,1.08fr) 34px minmax(190px,1.24fr); grid-template-rows: auto 34px auto; row-gap: 7px; }
.studio-process-node { min-height: 172px; padding: 13px; }.studio-process-node-head strong { font-size: 13px; }.studio-process-logo { height: 108px; margin: 3px 0 0 40px; overflow: hidden; }.studio-process-logo img { display: block; width: 116%; height: 116%; margin: -8% 0 0 -8%; object-fit: contain; mix-blend-mode: multiply; }
.studio-process-step-1 { grid-area: 1/1; }.studio-process-arrow-1 { grid-area: 1/2; }.studio-process-step-2 { grid-area: 1/3; }.studio-process-arrow-2 { grid-area: 1/4; }.studio-process-calibration { grid-area: 1/5; }.studio-process-arrow-3 { grid-area: 2/5; }.studio-process-engine { grid-area: 3/5; }.studio-process-arrow-4 { grid-area: 3/4; }.studio-process-setup { grid-area: 3/3; }.studio-process-result { grid-area: 3/1; }
.studio-process-calibration::before,.studio-process-calibration::after { display: none; }
.studio-process-arrow { position: relative; display: block; align-self: center; width: 34px; height: 34px; color: transparent; font-size: 0; }
.studio-process-arrow::before,.studio-process-arrow::after { content: ''; position: absolute; box-sizing: border-box; }
.studio-process-arrow-1::before,.studio-process-arrow-2::before { top: 16px; left: 4px; width: 25px; border-top: 1.5px solid var(--accent); }.studio-process-arrow-1::after,.studio-process-arrow-2::after { top: 12px; right: 4px; width: 8px; height: 8px; border-top: 1.5px solid var(--accent); border-right: 1.5px solid var(--accent); transform: rotate(45deg); }
.studio-process-arrow-4::before { top: 16px; left: 5px; width: 25px; border-top: 1.5px solid var(--accent); }.studio-process-arrow-4::after { top: 12px; left: 4px; width: 8px; height: 8px; border-bottom: 1.5px solid var(--accent); border-left: 1.5px solid var(--accent); transform: rotate(45deg); }
.studio-process-arrow-3::before { top: 3px; left: 16px; height: 25px; border-left: 1.5px solid var(--accent); }.studio-process-arrow-3::after { bottom: 4px; left: 12px; width: 8px; height: 8px; border-right: 1.5px solid var(--accent); border-bottom: 1.5px solid var(--accent); transform: rotate(45deg); }

/* Keep the familiar horizontal arrows; only the 03 → 04 transition is vertical. */
.studio-process-flow { grid-template-rows: auto 28px auto; row-gap: 8px; }
.studio-process-node { min-height: clamp(178px,17vw,218px); }.studio-process-logo { height: clamp(132px,11vw,166px); margin: 7px 2px 0; }.studio-process-logo img { width: 100%; height: 100%; margin: 0; object-fit: contain; transform: scale(1.34); transform-origin: center; }
.studio-process-step-1 { grid-area: 1/1; }.studio-process-arrow-1 { grid-area: 1/2; }.studio-process-step-2 { grid-area: 1/3; }.studio-process-arrow-2 { grid-area: 1/4; }.studio-process-calibration { grid-area: 1/5; }.studio-process-arrow-3 { grid-area: 2/5; }.studio-process-engine { grid-area: 3/5; }.studio-process-arrow-4 { grid-area: 3/4; }.studio-process-setup { grid-area: 3/3; }.studio-process-arrow-5 { grid-area: 3/2; }.studio-process-result { grid-area: 3/1; }
.studio-process-arrow { display: grid; place-items: center; width: auto; height: auto; color: var(--accent); font: 650 22px/1 var(--sans); text-align: center; }.studio-process-arrow::before,.studio-process-arrow::after { display: none; }.studio-process-arrow-3 { font-size: 22px; }
.studio-engine-logo { position: relative; z-index: 1; border-radius: 0; background: transparent; }

/* One unified working surface below the explanation. */
.studio-operation-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; align-items: stretch; }
.studio-operation-wide { grid-column: 1/-1; }

.studio-step { min-width: 0; padding: 24px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-alt); }
.studio-step-head { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.studio-step-number { flex: 0 0 34px; display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid color-mix(in srgb,var(--accent) 32%,var(--border)); border-radius: 10px; color: var(--accent); background: var(--accent-light); font-size: 11px; font-weight: 800; }
.studio-calibration-twin-step .studio-step-number { flex-basis: 34px; width: 34px; }
#page-studio .studio-step h3 { margin: 0; color: var(--text1); font-family: var(--sans); font-size: 18px; font-weight: 700; letter-spacing: -.015em; }
.studio-status-running { color: var(--accent); border-color: color-mix(in srgb,var(--accent) 25%,var(--border)); background: var(--accent-light); }
.studio-flow-arrow { display: grid; place-items: center; height: 34px; }
.studio-flow-arrow span { position: relative; width: 1px; height: 22px; background: var(--border2); }
.studio-flow-arrow span::after { content: ''; position: absolute; left: -4px; bottom: 0; width: 7px; height: 7px; border-right: 1.5px solid var(--accent); border-bottom: 1.5px solid var(--accent); transform: rotate(45deg); }

/* Dataset selection */
.studio-search-tools { position: relative; margin-bottom: 12px; }
#page-studio .dataset-search { min-width: 0; }
#page-studio .dataset-search input,#page-studio .dataset-filter-toggle { height: 42px; font-size: 13px; box-shadow: none; }
#page-studio .dataset-search input { padding-left: 38px; padding-right: 12px; }
#page-studio #studio-filters { width: 100%; max-height: min(560px,65vh); overflow-y: auto; }
#studio-dataset-list { display: grid; flex: 1; grid-template-columns: repeat(2,minmax(0,1fr)); grid-auto-rows: minmax(98px,1fr); gap: 8px; min-height: 310px; align-content: stretch; }
#studio-dataset-list .dataset-card { min-height: 98px; height: auto; padding: 10px 12px; border-radius: 9px; box-shadow: none; overflow: hidden; }
#studio-dataset-list .dataset-card::before { display: none; }
#studio-dataset-list .dataset-card.studio-selected { border-color: var(--accent) !important; background: var(--accent-light) !important; box-shadow: inset 0 0 0 1px color-mix(in srgb,var(--accent) 24%,transparent); }
#studio-dataset-list .dc-top { gap: 10px; }
#studio-dataset-list .dc-icon { width: 30px; height: 30px; border-radius: 6px; font-size: 14px; }
#studio-dataset-list .dc-name { font-size: 12px; line-height: 1.3; white-space: normal; overflow: visible; text-overflow: clip; overflow-wrap: anywhere; word-break: break-word; }
#studio-dataset-list .dc-refname { margin-top: 2px; font-size: 13px; line-height: 1.3; white-space: normal; overflow: visible; text-overflow: clip; overflow-wrap: anywhere; word-break: break-word; }
#studio-dataset-list .dc-stats { gap: 12px; margin-top: 5px; line-height: 1; }
#studio-dataset-list .dc-stat { font-size: 12px; }
#studio-dataset-list .dc-stat svg { width: 11px; height: 11px; }
#studio-dataset-list .dc-tags { margin-top: 5px; gap: 4px; flex-wrap: wrap; }
#studio-dataset-list .dc-tag { padding: 1px 5px; font-size: 10px; white-space: nowrap; }
.studio-datasets { display: flex; flex-direction: column; }.studio-dataset-footer { display: flex; justify-content: space-between; align-items: end; gap: 12px; margin-top: 15px; }
.studio-dataset-actions { display: flex; align-items: center; gap: 8px; }
.studio-pager-info { margin-bottom: 8px; color: var(--text3); font-size: 12px; }
.studio-pager { display: flex; flex-wrap: wrap; gap: 4px; }
#page-studio .studio-action { height: 36px; padding-inline: 16px; }
#studio-confirm { min-width: 110px; }

/* Feature cards */
.studio-features-step { display: flex; flex-direction: column; container-type: inline-size; }
.studio-feature-grid { display: grid; flex: 1; grid-template-columns: repeat(3,minmax(0,1fr)); grid-auto-rows: minmax(132px,1fr); gap: 12px; }
.studio-signal-card { min-width: 0; min-height: 0; display: flex; flex-direction: column; margin: 0; padding: 15px 15px 9px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface); }
.studio-signal-card figcaption { display: flex; align-items: baseline; justify-content: flex-start; gap: 8px; }
.studio-signal-card figcaption strong { color: var(--text2); font-size: 12px; font-weight: 650; }
.studio-signal-card svg { display: block; flex: 1; width: 100%; min-height: 96px; height: 100%; margin-top: 6px; overflow: visible; }
.studio-signal-card text { fill: var(--text4); font: 9px var(--sans); }
.studio-mini-grid { fill: none; stroke: var(--border); stroke-width: 1; }
.studio-signal-line { fill: none; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.line-blue { stroke: #2a5fea; }.line-cyan { stroke: #0891b2; }.line-amber { stroke: #d97706; }.line-violet { stroke: #7c3aed; }.line-rose { stroke: #e11d48; }.line-green { stroke: #16a36b; }
.studio-signal-band { fill: rgba(22,163,107,.1); stroke: none; }
.studio-feature-grid.is-reset .studio-signal-line,.studio-feature-grid.is-reset .studio-signal-band { opacity: 0; }
@container (max-width:700px) { .studio-feature-grid { grid-template-columns: repeat(2,minmax(0,1fr)); grid-auto-rows: minmax(128px,1fr); }.studio-signal-card svg { min-height: 92px; } }

/* PIML explanation and the combined calibration/twin workbench. */
.studio-formula { min-height: 54px; display: flex; align-items: center; justify-content: center; padding: 10px 14px; border: 1px solid var(--border); border-radius: 9px; color: var(--text2); background: var(--surface-alt); font: 500 clamp(13px,1.4vw,18px) var(--mono); text-align: center; overflow-x: auto; }
.studio-formula > span { color: var(--accent); font-weight: 700; }
.studio-calibration-workbench { display: grid; grid-template-columns: minmax(330px,.9fr) minmax(0,1.5fr); gap: 16px; align-items: stretch; }
.studio-live-loss { display: flex; flex-direction: column; justify-content: center; padding: 20px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.studio-twin-build-panel { min-width: 0; display: grid; grid-template-columns: 160px minmax(0,1fr); align-items: center; gap: 18px; padding: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.studio-progress-wrap { display: flex; flex-direction: column; align-items: center; gap: 13px; text-align: center; }
.studio-progress-ring { width: 120px; height: 120px; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(var(--accent) calc(var(--progress) * 1%),var(--border) 0); transition: background .2s linear; }
.studio-progress-ring::before { content: ''; grid-area: 1/1; width: 92px; height: 92px; border-radius: 50%; background: var(--surface); box-shadow: 0 0 0 1px var(--border); }
.studio-progress-ring > div { z-index: 1; grid-area: 1/1; display: flex; flex-direction: column; align-items: center; }
.studio-progress-ring strong { color: var(--text1); font-size: 24px; font-weight: 700; font-variant-numeric: tabular-nums; }
.studio-progress-ring span { color: var(--text3); font-size: 10px; }
.studio-progress-caption { color: var(--text2); font-size: 12px; font-weight: 650; }
.studio-loss-chart { min-width: 0; margin: 0; padding-left: 18px; border-left: 1px solid var(--border); }
.studio-live-loss.studio-loss-chart { padding: 20px; border-left: 1px solid var(--border); }
.studio-loss-chart figcaption { display: flex; justify-content: space-between; align-items: center; }
.studio-loss-chart figcaption strong { color: var(--text2); font-size: 13px; }
.studio-loss-chart figcaption span { color: var(--text4); font-size: 10px; }
.studio-loss-legend { display: inline-flex; align-items: center; gap: 5px; }
.studio-loss-key { display: inline-block; width: 14px; height: 2px; margin-left: 5px; border-radius: 2px; background: var(--accent); }
.studio-loss-key.validation { background: #7c3aed; }
.studio-loss-chart svg { width: 100%; height: auto; margin-top: 5px; }
.studio-loss-grid { fill: none; stroke: var(--border); stroke-width: 1; }
.studio-loss-grid text,.studio-axis-title { fill: var(--text4); stroke: none; font: 9px var(--sans); }
.studio-loss-area { fill: color-mix(in srgb,var(--accent) 10%,transparent); }
.studio-loss-line { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; }
.studio-loss-validation { stroke: #7c3aed; stroke-dasharray: 5 4; }
.studio-live-loss.is-reset .studio-loss-area,.studio-live-loss.is-reset .studio-loss-line { opacity: 0; }

/* Digital twin output */
.studio-stage { position: relative; min-height: 290px; display: flex; align-items: center; justify-content: center; padding: 34px; border: 1px dashed var(--border2); border-radius: 12px; color: var(--text3); background: var(--surface); text-align: center; font-size: 13px; line-height: 1.6; overflow: hidden; }
.studio-stage.is-confirmed { border-style: solid; }
.studio-twin-caption { position: absolute; z-index: 2; top: 17px; left: 19px; right: 19px; text-align: left; }
.studio-twin-caption strong { display: block; color: var(--text2); font-size: 14px; font-weight: 650; }
.studio-twin-caption span { color: var(--text3); font-size: 11px; }
.studio-visual-placeholder { color: var(--text4); }
.studio-twin-visual { position: relative; isolation: isolate; width: 100%; min-height: 235px; display: flex; align-items: center; justify-content: center; margin-top: 16px; border-radius: 12px; background: radial-gradient(ellipse at 50% 84%,rgba(56,189,248,.15),transparent 45%),linear-gradient(rgba(93,126,174,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(93,126,174,.055) 1px,transparent 1px); background-size: auto,18px 18px,18px 18px; overflow: hidden; }
.studio-twin-effects { position: absolute; z-index: 0; inset: 0; overflow: hidden; pointer-events: none; }
.studio-twin-beam { position: absolute; left: 50%; bottom: 19px; width: min(72%,420px); height: 220px; transform: translateX(-50%); border: 1px solid rgba(125,211,252,.24); border-radius: 46% 46% 28% 28% / 30% 30% 20% 20%; background: radial-gradient(ellipse at 50% 86%,rgba(56,189,248,.3) 0%,rgba(77,190,255,.16) 34%,rgba(96,165,250,.07) 57%,transparent 74%),linear-gradient(90deg,transparent 0%,rgba(125,211,252,.08) 18%,rgba(224,248,255,.14) 50%,rgba(125,211,252,.08) 82%,transparent 100%); box-shadow: inset 22px 0 35px -30px rgba(56,189,248,.75),inset -22px 0 35px -30px rgba(56,189,248,.75),0 0 28px rgba(56,189,248,.13); filter: drop-shadow(0 0 8px rgba(56,189,248,.18)); }
.studio-twin-beam::before { content: ''; position: absolute; inset: 7% 5% 11%; border: 1px dashed rgba(125,211,252,.2); border-radius: inherit; }
.studio-twin-beam::after { content: ''; position: absolute; left: 4%; right: 4%; bottom: -2px; height: 57px; border: 1px solid rgba(125,211,252,.35); border-radius: 50%; background: radial-gradient(ellipse,rgba(224,248,255,.2),rgba(56,189,248,.08) 48%,transparent 70%); box-shadow: 0 0 20px rgba(56,189,248,.16); }
.studio-twin-platform { position: absolute; z-index: 1; left: 50%; bottom: 17px; width: min(70%,390px); height: 68px; transform: translateX(-50%); border: 1.5px solid rgba(56,189,248,.8); border-radius: 50%; background: radial-gradient(ellipse,rgba(224,248,255,.68) 0%,rgba(56,189,248,.18) 38%,rgba(42,95,234,.08) 58%,transparent 72%); box-shadow: 0 0 0 7px rgba(56,189,248,.07),0 0 0 14px rgba(42,95,234,.045),0 0 28px rgba(56,189,248,.32),inset 0 0 18px rgba(255,255,255,.6); }
.studio-twin-platform::before,.studio-twin-platform::after { content: ''; position: absolute; left: 50%; top: 50%; border-radius: 50%; transform: translate(-50%,-50%); }
.studio-twin-platform::before { width: 72%; height: 58%; border: 1px solid rgba(42,95,234,.58); box-shadow: 0 0 10px rgba(56,189,248,.25); }
.studio-twin-platform::after { width: 31%; height: 20%; background: rgba(224,248,255,.78); box-shadow: 0 0 20px 8px rgba(56,189,248,.38); }
.studio-twin-scan { position: absolute; z-index: 1; left: 50%; bottom: 21px; width: min(62%,350px); height: 56px; border: 1px dashed rgba(42,95,234,.48); border-radius: 50%; transform: translateX(-50%); animation: studio-twin-scan 3.2s ease-in-out infinite; }
.studio-twin-particles { position: absolute; inset: 20px 9% 54px; opacity: .68; background: radial-gradient(circle at 16% 67%,rgba(56,189,248,.9) 0 1.5px,transparent 2px),radial-gradient(circle at 28% 28%,rgba(42,95,234,.65) 0 1px,transparent 1.7px),radial-gradient(circle at 74% 22%,rgba(56,189,248,.78) 0 1.5px,transparent 2px),radial-gradient(circle at 84% 61%,rgba(42,95,234,.7) 0 1px,transparent 1.7px),radial-gradient(circle at 63% 48%,rgba(125,211,252,.85) 0 1px,transparent 1.8px); filter: drop-shadow(0 0 4px rgba(56,189,248,.75)); }
.studio-twin-image { position: relative; z-index: 2; display: block; width: min(58%,355px); height: 245px; object-fit: contain; margin: 18px auto 0; filter: drop-shadow(0 16px 21px rgba(45,67,98,.16)) drop-shadow(0 0 10px rgba(56,189,248,.16)); }
.twin-form-prismatic,.twin-form-pouch { min-height: 310px; }
.twin-form-prismatic .studio-twin-image,.twin-form-pouch .studio-twin-image { width: min(76%,430px); height: 210px; }
.twin-form-prismatic .studio-twin-beam,.twin-form-pouch .studio-twin-beam { bottom: 20px; width: min(91%,520px); height: 235px; border-radius: 43% 43% 26% 26% / 32% 32% 22% 22%; }
.twin-form-prismatic .studio-twin-tag.tag-soc,.twin-form-pouch .studio-twin-tag.tag-soc { top: 10px; left: 4%; }
.twin-form-prismatic .studio-twin-tag.tag-soh,.twin-form-pouch .studio-twin-tag.tag-soh { top: 10px; right: 4%; }
.twin-form-prismatic .studio-twin-tag.tag-voltage,.twin-form-pouch .studio-twin-tag.tag-voltage { bottom: 9px; left: 4%; }
.twin-form-prismatic .studio-twin-tag.tag-temperature,.twin-form-pouch .studio-twin-tag.tag-temperature { right: 4%; bottom: 9px; }
.twin-form-18650 .studio-twin-beam,.twin-form-21700 .studio-twin-beam,.twin-form-cyl .studio-twin-beam { width: min(72%,420px); height: 224px; }
.studio-twin-tags { position: absolute; z-index: 3; inset: 0; pointer-events: none; }
.studio-twin-tag { position: absolute; display: flex; align-items: center; gap: 6px; min-height: 31px; padding: 6px 9px; border: 1px solid rgba(96,165,250,.3); border-radius: 8px; color: var(--text2); background: color-mix(in srgb,var(--surface) 84%,transparent); box-shadow: 0 6px 15px rgba(42,95,234,.1),inset 0 1px 0 rgba(255,255,255,.48); backdrop-filter: blur(7px); -webkit-backdrop-filter: blur(7px); font-size: 11px; line-height: 1; white-space: nowrap; animation: studio-twin-float 4s ease-in-out infinite; }
.studio-twin-tag i { flex: 0 0 6px; width: 6px; height: 6px; border-radius: 50%; background: #2a5fea; box-shadow: 0 0 7px rgba(42,95,234,.55); }
.studio-twin-tag b { color: var(--text2); font-size: 11px; font-weight: 700; }.studio-twin-tag em { color: var(--accent); font-size: 11px; font-style: normal; font-weight: 750; font-variant-numeric: tabular-nums; }
.studio-twin-tag.tag-soc { top: 36px; left: 5%; }.studio-twin-tag.tag-soh { top: 36px; right: 5%; animation-delay: -.9s; }.studio-twin-tag.tag-voltage { bottom: 47px; left: 3%; animation-delay: -1.8s; }.studio-twin-tag.tag-temperature { right: 3%; bottom: 47px; animation-delay: -2.7s; }
.studio-twin-tag.tag-soh i { background: #16a36b; box-shadow: 0 0 7px rgba(22,163,107,.5); }.studio-twin-tag.tag-voltage i { background: #7c3aed; box-shadow: 0 0 7px rgba(124,58,237,.5); }.studio-twin-tag.tag-temperature i { background: #f59e0b; box-shadow: 0 0 7px rgba(245,158,11,.5); }
@keyframes studio-twin-scan { 0%,100% { opacity: .3; transform: translateX(-50%) scale(.86); } 50% { opacity: .8; transform: translateX(-50%) scale(1.08); } }
@keyframes studio-twin-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@media (prefers-reduced-motion:reduce) { .studio-twin-scan,.studio-twin-tag { animation: none; }.studio-twin-scan { opacity: .58; } }
.studio-twin-build-panel .studio-stage { min-height: 310px; }
/* Generation setup */
.studio-setup { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: end; gap: 22px; }
#studio-controls { grid-column: 1/-1; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px 46px; padding-top: 2px; }
.studio-control { display: grid; grid-template-columns: 124px minmax(60px,1fr) 130px; gap: 14px; align-items: center; }
.studio-control-label,.studio-scenario { color: var(--text2); font-size: 12px; font-weight: 600; }
.studio-values { display: flex; align-items: center; justify-content: end; gap: 4px; color: var(--text3); font-size: 11px; font-variant-numeric: tabular-nums; }
.studio-input { height: 34px; padding: 0 9px; border: 1px solid var(--border); border-radius: 7px; color: var(--text1); background: var(--input-bg); font: inherit; }
.studio-values input { width: 52px; min-width: 0; padding: 0 3px; text-align: center; appearance: textfield; -moz-appearance: textfield; }
.studio-values input::-webkit-inner-spin-button,.studio-values input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
.studio-slider { position: relative; height: 24px; }
.studio-slider-track { position: absolute; top: 11px; left: 0; right: 0; height: 3px; border-radius: 3px; background: linear-gradient(to right,var(--border) var(--range-start),var(--accent) var(--range-start),var(--accent) var(--range-end),var(--border) var(--range-end)); }
#page-studio .studio-slider input { position: absolute; inset: 0; width: 100%; height: 24px; margin: 0; border: 0; background: transparent !important; box-shadow: none; appearance: none; -webkit-appearance: none; cursor: pointer; }
.studio-range input { pointer-events: none; }
.studio-slider input::-webkit-slider-thumb { width: 14px; height: 14px; border: 3px solid var(--accent); border-radius: 50%; background: var(--surface); appearance: none; -webkit-appearance: none; pointer-events: auto; cursor: grab; }
.studio-slider input::-moz-range-thumb { width: 9px; height: 9px; border: 3px solid var(--accent); border-radius: 50%; background: var(--surface); pointer-events: auto; cursor: grab; }
.studio-scenario { display: grid; grid-template-columns: 124px minmax(220px,360px); align-items: center; gap: 14px; }
.studio-scenario select { width: 100%; font-size: 12px; }
#page-studio .studio-run { width: auto; min-width: 190px; min-height: 40px; }

/* Generated output */
.studio-results { min-height: 235px; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); align-items: stretch; gap: 16px; }
.studio-results-actions { display: flex; justify-content: flex-end; margin-top: 22px; }
.studio-empty { min-height: 220px; display: flex; align-items: center; justify-content: center; padding: 30px; color: var(--text3); font-size: 13px; text-align: center; }
#studio-dataset-list > .studio-empty { grid-column: 1/-1; min-height: 190px; }
.studio-results-empty { grid-column: 1/-1; flex-direction: column; gap: 10px; border: 1px dashed var(--border2); border-radius: 11px; background: var(--surface); }
.studio-results-empty strong { color: var(--text2); font-size: 16px; font-weight: 600; }
.studio-results-empty > span { font-size: 12px; }
.studio-empty-mark { display: flex; align-items: end; gap: 5px; height: 28px; margin-bottom: 5px; }
.studio-empty-mark span { width: 5px; height: 13px; border-radius: 2px; background: var(--border2); }.studio-empty-mark span:nth-child(2){height:24px}.studio-empty-mark span:nth-child(3){height:18px}
.studio-report-head { grid-column: 1/-1; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.studio-report-head > div { display: flex; flex-direction: column; gap: 4px; }
.studio-report-head strong { color: var(--text2); font-size: 13px; font-weight: 650; }
.studio-report-head span { color: var(--text3); font-size: 11px; }
.is-stale #studio-result-status { color: var(--amber); }
.studio-prediction-block { min-width: 0; display: flex; flex-direction: column; padding: 19px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface); }
.studio-chart-heading { min-height: 32px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
#page-studio .studio-chart-heading h3 { display: flex; align-items: center; gap: 7px; margin: 0; color: var(--text1); font-size: 14px; font-weight: 650; }
.studio-chart-heading select { max-width: 180px; height: 30px; font-size: 11px; }
.studio-output-grid { display: flex; flex: 1; flex-direction: column; gap: 20px; margin-top: 18px; }
.studio-metrics { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); }
.studio-metric { min-width: 0; padding: 0 11px; }
.studio-metric:first-child { padding-left: 0; }.studio-metric:last-child { padding-right: 0; }.studio-metric + .studio-metric { border-left: 1px solid var(--border); }
.studio-metric > span { display: block; min-height: 29px; margin-bottom: 5px; color: var(--text3); font-size: 11px; }
.studio-metric > div { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px; }
.studio-metric strong { color: var(--text1); font-size: 22px; font-weight: 650; letter-spacing: -.035em; font-variant-numeric: tabular-nums; }
.studio-metric small { color: var(--text3); font-size: 10px; }
.studio-metric-delta { flex-basis: 100%; margin-top: 3px; color: var(--text4); font-size: 9px; }
.studio-chart { display: block; width: 100%; height: auto; max-height: 270px; overflow: visible; }
.studio-chart-grid line { stroke: var(--border); stroke-width: 1; stroke-dasharray: 3 4; }
.studio-chart-grid text,.studio-axis-label { fill: var(--text3); stroke: none; font: 10px var(--sans); }
.studio-curve { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.studio-chart-area { fill: var(--accent); opacity: .07; }.studio-forecast { stroke-dasharray: 5 5; }.studio-now-line { stroke: var(--text4); stroke-dasharray: 3 4; }.studio-chart-limit { stroke: var(--red); stroke-dasharray: 5 5; }.studio-limit-label { fill: var(--red); font-size: 10px; }.studio-chart-point { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }.studio-endpoint { fill: var(--text1); font-size: 11px; font-weight: 650; }
.studio-info { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 14px; height: 14px; border: 1px solid var(--border2); border-radius: 50%; color: var(--text3); font-size: 9px; cursor: help; }
.studio-info-tip { display: none; position: absolute; z-index: 6; top: 22px; right: -80px; width: 230px; padding: 11px; border: 1px solid var(--border); border-radius: 8px; color: var(--text2); background: var(--surface); box-shadow: var(--card-shadow); font-size: 11px; font-weight: 400; line-height: 1.5; }.studio-info:hover .studio-info-tip,.studio-info:focus .studio-info-tip { display: block; }
.has-results .studio-prediction-block { animation: studio-report-reveal .35s ease-out both; }.has-results .studio-prediction-block:last-child { animation-delay: .06s; }
@keyframes studio-report-reveal { from { opacity:0; transform:translateY(8px) } to { opacity:1; transform:translateY(0) } }
#studio-results-title { scroll-margin-top: 96px; }

@media (prefers-reduced-motion:reduce) { .has-results .studio-prediction-block { animation:none; } }
@media (max-width:1250px) {
  .studio-feature-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .studio-control { grid-template-columns: 110px minmax(50px,1fr) 122px; gap: 10px; }
}
@media (max-width:1000px) {
  .studio-process-flow { grid-template-columns: minmax(0,1fr); grid-template-rows: repeat(10,auto); }
  .studio-process-node { width: 100%; min-height: 138px; }
  .studio-process-step-1 { grid-area: 1/1; }.studio-process-arrow-1 { grid-area: 2/1; }
  .studio-process-step-2 { grid-area: 3/1; }.studio-process-arrow-2 { grid-area: 4/1; }
  .studio-process-calibration { grid-area: 5/1; }.studio-process-engine { grid-area: 6/1; }
  .studio-process-arrow-4 { grid-area: 7/1; }.studio-process-setup { grid-area: 8/1; }.studio-process-arrow-5 { grid-area: 9/1; }.studio-process-result { grid-area: 10/1; }
  .studio-process-arrow-1,.studio-process-arrow-2 { transform: rotate(90deg); }.studio-process-arrow-4,.studio-process-arrow-5 { transform: rotate(-90deg); }
  .studio-piml-panel-grid,.studio-calibration-workbench { grid-template-columns: minmax(0,1fr); }
  .studio-piml-formula-card::before,.studio-piml-input-card::after { display: none; }
  #studio-controls { grid-template-columns: minmax(0,1fr); }
}
@media (max-width:780px) {
  .studio-explainer,.studio-operations { padding: 20px; border-radius: 14px; }
  .studio-operation-grid { grid-template-columns: minmax(0,1fr); }
  .studio-operation-wide { grid-column: 1; }
  .studio-feature-grid,#studio-dataset-list,.studio-results { grid-template-columns: minmax(0,1fr); }
  .studio-twin-build-panel { grid-template-columns: minmax(0,1fr); }
  .studio-piml-panel-grid { gap: 14px; }
  .studio-results-empty { grid-column: 1; }
}
@media (max-width:600px) {
  .studio-workspace { gap: 28px; }
  .studio-explainer,.studio-operations { padding: 16px; }
  .studio-step { padding: 17px; }
  .studio-step-head { align-items: flex-start; flex-wrap: wrap; }
  .studio-feature-grid { grid-template-columns: minmax(0,1fr); }
  .studio-piml-explanation { padding: 16px; }.studio-piml-panel-grid { grid-template-columns: minmax(0,1fr); }
  .studio-setup { grid-template-columns: minmax(0,1fr); }
  .studio-control { grid-template-columns: minmax(0,1fr) 125px; gap: 8px 12px; }
  .studio-control-label { grid-column: 1/-1; }
  .studio-scenario { grid-template-columns: minmax(0,1fr); gap: 8px; }
  #page-studio .studio-run { width: 100%; }
  .studio-metrics { gap: 6px; }.studio-metric { padding-inline: 7px; }.studio-metric strong { font-size: 18px; }
  .studio-stage { padding: 22px; }.studio-twin-image { width: 75%; }.studio-twin-tag { gap: 4px; padding: 5px 7px; }.studio-twin-tag.tag-soc,.studio-twin-tag.tag-voltage { left: 1%; }.studio-twin-tag.tag-soh,.studio-twin-tag.tag-temperature { right: 1%; }
}

@media (max-width:1000px) {
  .studio-process-flow { grid-template-columns: minmax(0,1fr); grid-template-rows: repeat(11,auto); row-gap: 7px; }
  .studio-process-node { min-height: min(68vw,260px); }.studio-process-logo { height: min(47vw,185px); }.studio-process-step-1 { grid-area: 1/1; }.studio-process-arrow-1 { grid-area: 2/1; }.studio-process-step-2 { grid-area: 3/1; }.studio-process-arrow-2 { grid-area: 4/1; }.studio-process-calibration { grid-area: 5/1; }.studio-process-arrow-3 { grid-area: 6/1; }.studio-process-engine { grid-area: 7/1; }.studio-process-arrow-4 { grid-area: 8/1; }.studio-process-setup { grid-area: 9/1; }.studio-process-arrow-5 { grid-area: 10/1; }.studio-process-result { grid-area: 11/1; }
  .studio-process-arrow,.studio-process-arrow-1,.studio-process-arrow-2,.studio-process-arrow-3,.studio-process-arrow-4,.studio-process-arrow-5 { transform: none; }
}

/* The assistant drawer reduces the usable Studio width by 400px.  A 14-inch
   desktop can therefore have a workspace as narrow as a tablet even though
   its viewport has not crossed the normal responsive breakpoints. */
@media (min-width:761px) and (max-width:1700px) {
  body.ai-panel-open #page-studio .studio-explainer,
  body.ai-panel-open #page-studio .studio-operations { padding: 20px; }
  body.ai-panel-open #page-studio .studio-process-flow {
    grid-template-columns: minmax(0,1fr);
    grid-template-rows: repeat(11,auto);
    row-gap: 7px;
  }
  body.ai-panel-open #page-studio .studio-process-node { min-height: 150px; }
  body.ai-panel-open #page-studio .studio-process-logo { height: 112px; }
  body.ai-panel-open #page-studio .studio-process-step-1 { grid-area: 1/1; }
  body.ai-panel-open #page-studio .studio-process-arrow-1 { grid-area: 2/1; transform: rotate(90deg); }
  body.ai-panel-open #page-studio .studio-process-step-2 { grid-area: 3/1; }
  body.ai-panel-open #page-studio .studio-process-arrow-2 { grid-area: 4/1; transform: rotate(90deg); }
  body.ai-panel-open #page-studio .studio-process-calibration { grid-area: 5/1; }
  body.ai-panel-open #page-studio .studio-process-arrow-3 { grid-area: 6/1; }
  body.ai-panel-open #page-studio .studio-process-engine { grid-area: 7/1; }
  body.ai-panel-open #page-studio .studio-process-arrow-4 { grid-area: 8/1; transform: rotate(-90deg); }
  body.ai-panel-open #page-studio .studio-process-setup { grid-area: 9/1; }
  body.ai-panel-open #page-studio .studio-process-arrow-5 { grid-area: 10/1; transform: rotate(-90deg); }
  body.ai-panel-open #page-studio .studio-process-result { grid-area: 11/1; }
  body.ai-panel-open #page-studio .studio-piml-panel-grid,
  body.ai-panel-open #page-studio .studio-calibration-workbench,
  body.ai-panel-open #page-studio .studio-operation-grid,
  body.ai-panel-open #page-studio .studio-twin-build-panel,
  body.ai-panel-open #page-studio #studio-controls,
  body.ai-panel-open #page-studio .studio-setup { grid-template-columns: minmax(0,1fr); }
  body.ai-panel-open #page-studio .studio-operation-wide { grid-column: 1; }
  body.ai-panel-open #page-studio .studio-piml-formula-card::before,
  body.ai-panel-open #page-studio .studio-piml-input-card::after { display: none; }
}

/* Studio motion system: communicate progress and invite exploration without competing with the data. */
.studio-workspace-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.studio-workspace-status { display: inline-flex; align-items: center; gap: 7px; margin: 0; color: var(--text3); font-size: 12px; font-weight: 600; white-space: nowrap; }
.studio-workspace-status > span { width: 7px; height: 7px; border-radius: 50%; background: var(--text4); }
.studio-workspace-status.is-working { color: var(--accent); }.studio-workspace-status.is-working > span { background: var(--accent); animation: studio-status-pulse 1.25s ease-in-out infinite; }
.studio-workspace-status.is-ready { color: #16845b; }.studio-workspace-status.is-ready > span { background: #16a36b; box-shadow: 0 0 0 4px rgba(22,163,107,.1); }

.studio-process-node { transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease, background .24s ease; }
.studio-process-node:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 42%, var(--border)); box-shadow: 0 12px 24px rgba(42,95,234,.1); }
.studio-process-node.is-current { border-color: color-mix(in srgb, var(--accent) 56%, var(--border)); background: color-mix(in srgb, var(--accent-light) 40%, var(--surface)); box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 13%, transparent), 0 10px 23px rgba(42,95,234,.1); }
.studio-process-node.is-current .studio-process-number { color: #fff; background: var(--accent); box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 10%, transparent); }
.studio-process-node.is-complete .studio-process-number { color: #fff; background: #16a36b; }
.studio-process-node.is-complete .studio-process-number::after { content: '✓'; position: absolute; font-size: 12px; }
.studio-process-node.is-complete .studio-process-number { position: relative; font-size: 0; }
.studio-process-arrow { transition: color .25s ease, transform .25s ease; }
#page-studio[data-flow-stage="identify"] .studio-process-arrow-1,
#page-studio[data-flow-stage="calibrate"] .studio-process-arrow-1,
#page-studio[data-flow-stage="calibrate"] .studio-process-arrow-2,
#page-studio[data-flow-stage="setup"] .studio-process-arrow,
#page-studio[data-flow-stage="results"] .studio-process-arrow { animation: studio-flow-pulse 1.45s ease-in-out infinite; }

.studio-reveal { opacity: 0; transform: translateY(16px); transition: opacity .58s ease, transform .58s cubic-bezier(.2,.7,.2,1); }
.studio-reveal.is-visible { opacity: 1; transform: none; }
.studio-feature-grid.is-identified .studio-signal-line { stroke-dasharray: 420; stroke-dashoffset: 420; animation: studio-draw-signal .82s cubic-bezier(.45,0,.3,1) forwards; }
.studio-feature-grid.is-identified .studio-signal-card:nth-child(2) .studio-signal-line { animation-delay: .07s; }
.studio-feature-grid.is-identified .studio-signal-card:nth-child(3) .studio-signal-line { animation-delay: .14s; }
.studio-feature-grid.is-identified .studio-signal-card:nth-child(4) .studio-signal-line { animation-delay: .21s; }
.studio-feature-grid.is-identified .studio-signal-card:nth-child(5) .studio-signal-line { animation-delay: .28s; }
.studio-feature-grid.is-identified .studio-signal-card:nth-child(6) .studio-signal-line { animation-delay: .35s; }
.studio-feature-grid.is-identified .studio-signal-band { animation: studio-band-in .45s ease .28s both; }
.studio-live-loss.is-training .studio-loss-train { stroke-dasharray: 430; stroke-dashoffset: 430; animation: studio-draw-signal 1.05s cubic-bezier(.45,0,.3,1) forwards; }
.studio-live-loss.is-training .studio-loss-validation { stroke-dasharray: 430; stroke-dashoffset: 430; animation: studio-draw-signal 1.05s cubic-bezier(.45,0,.3,1) .15s forwards; }
.studio-live-loss.is-training .studio-loss-area { animation: studio-area-in .85s ease .45s both; }
.is-calibrating .studio-progress-ring { box-shadow: 0 0 0 7px rgba(42,95,234,.07), 0 0 25px rgba(42,95,234,.15); }
.is-calibrating .studio-twin-visual { animation: studio-visual-awake 1.3s ease-in-out infinite; }
.studio-twin-beam { background-size: 100% 100%, 200% 100%; animation: studio-beam-flow 4.2s linear infinite; }
.studio-twin-particles { animation: studio-particles-drift 7s ease-in-out infinite alternate; }
.studio-prediction-block .studio-curve { stroke-dasharray: 620; stroke-dashoffset: 620; animation: studio-draw-signal .9s cubic-bezier(.45,0,.3,1) .18s forwards; }
.studio-prediction-block .studio-chart-area { animation: studio-area-in .5s ease .55s both; }

@keyframes studio-status-pulse { 50% { box-shadow: 0 0 0 5px rgba(42,95,234,.12); } }
@keyframes studio-flow-pulse { 50% { color: #6ea1ff; transform: scale(1.18); text-shadow: 0 0 13px rgba(42,95,234,.32); } }
@keyframes studio-draw-signal { to { stroke-dashoffset: 0; } }
@keyframes studio-band-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes studio-area-in { from { opacity: 0; } to { opacity: .07; } }
@keyframes studio-visual-awake { 50% { filter: saturate(1.18) brightness(1.03); } }
@keyframes studio-beam-flow { to { background-position: 0 0, 200% 0; } }
@keyframes studio-particles-drift { to { transform: translateY(-9px) scale(1.03); opacity: .9; } }

@media (prefers-reduced-motion: reduce) {
  .studio-workspace-status.is-working > span, #page-studio[data-flow-stage] .studio-process-arrow,
  .studio-twin-beam, .studio-twin-particles, .is-calibrating .studio-twin-visual,
  .studio-feature-grid.is-identified .studio-signal-line, .studio-feature-grid.is-identified .studio-signal-band,
  .studio-live-loss.is-training .studio-loss-line, .studio-live-loss.is-training .studio-loss-area,
  .studio-prediction-block .studio-curve, .studio-prediction-block .studio-chart-area { animation: none; }
  .studio-reveal { opacity: 1; transform: none; transition: none; }
}
@media (max-width:780px) { .studio-workspace-heading { align-items: flex-start; flex-direction: column; gap: 6px; }.studio-workspace-status { white-space: normal; } }