:root{--paper: #f3f1ea;--panel: #fbfaf6;--panel-2: #efece3;--panel-3: #e6e2d6;--line: #dcd7ca;--line-2: #c6bfae;--ink: #1b1e23;--ink-2: #4a4f57;--ink-3: #777b82;--accent: #c94b16;--accent-ink: #ffffff;--accent-soft: #f6e2d6;--traj: #12579b;--target: #c94b16;--teach: #0d7466;--teach-soft: #dcefe9;--warn: #a66a12;--warn-soft: #f7ead3;--err: #b8322a;--err-soft: #f6dcd8;--ok: #2c7a4b;--canvas-bg: #fdfcf8;--grid: #ebe7dc;--grid-3d: #cbc4b2;--ground-3d: #e7e1d1;--shadow: 0 1px 0 rgba(27, 30, 35, .04), 0 8px 24px -12px rgba(27, 30, 35, .18);--sans: "IBM Plex Sans", "IBM Plex Sans Arabic", system-ui, sans-serif;--mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;--ctl: 34px;--fs: 14px;--fs-s: 12.5px;color-scheme:light}:root[data-theme=dark]{--paper: #121417;--panel: #181b1f;--panel-2: #1f2328;--panel-3: #262b31;--line: #2a2f35;--line-2: #3b4148;--ink: #e9e6de;--ink-2: #b7b4ab;--ink-3: #85837b;--accent: #ee7a3f;--accent-ink: #1b1e23;--accent-soft: #3a2519;--traj: #6db3ff;--target: #ee7a3f;--teach: #3fc6ae;--teach-soft: #15322d;--warn: #e0a64a;--warn-soft: #3a2d16;--err: #f0766b;--err-soft: #3d1c1a;--ok: #6cc78f;--canvas-bg: #0f1114;--grid: #1d2126;--grid-3d: #353b42;--ground-3d: #1a1e23;--shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 10px 30px -12px rgba(0, 0, 0, .6);color-scheme:dark}:root[lang=ar]{--sans: "IBM Plex Sans Arabic", "IBM Plex Sans", system-ui, sans-serif}:root[data-layout=tablet],:root[data-layout=portrait]{--ctl: 44px;--fs: 15px;--fs-s: 14px}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--paper);color:var(--ink);font:400 var(--fs) / 1.4 var(--sans);-webkit-font-smoothing:antialiased;overflow:hidden}button,input,select{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}:focus-visible{outline:2px solid var(--accent);outline-offset:1px}[dir=rtl] 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.eyebrow{font-size:13px}.eyebrow-name{color:var(--target);letter-spacing:0;text-transform:none;margin-inline-start:6px}.icon-btn{display:inline-grid;place-items:center;inline-size:var(--ctl);block-size:var(--ctl);padding:0;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--ink-2)}.icon-btn:hover:not(:disabled){background:var(--panel-2);color:var(--ink)}.chip{display:inline-flex;align-items:center;gap:6px;block-size:var(--ctl);padding-inline:12px;border:1px solid var(--line);border-radius:7px;background:var(--panel);color:var(--ink-2);white-space:nowrap}.chip:hover{border-color:var(--line-2);color:var(--ink)}.chip.lang{font-family:"IBM Plex Sans Arabic",var(--sans);min-inline-size:72px;justify-content:center}.primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;block-size:var(--ctl);padding-inline:14px;border:1px solid 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var(--mono);min-inline-size:18px;block-size:20px;padding-inline:5px;border-radius:10px;display:inline-grid;place-items:center;background:var(--panel-3)}.issues-badge.sev-error{border-color:var(--err);color:var(--err)}.issues-badge.sev-error .count{background:var(--err);color:#fff}.issues-badge.sev-warning{border-color:var(--warn);color:var(--warn)}.issues-badge.sev-warning .count{background:var(--warn);color:#fff}.issues-badge.sev-info .count{background:var(--teach);color:#fff}.report-btn{display:flex;flex-direction:column;align-items:stretch;position:relative}.report-status{display:none}.report-btn.full .report-status{display:block;font-size:13px;margin-block-start:4px;white-space:normal}.report-status.st-stale,.report-status.st-building{color:var(--warn)}.report-status.st-ready{color:var(--ok)}.report-status.st-error{color:var(--err)}.issues-strip{display:flex;align-items:center;gap:12px;padding:6px 12px;min-block-size:46px;background:var(--warn-soft);border-block-end:1px solid 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.dot.bad{background:var(--err)}.warn-text{color:var(--warn)}.err-text{color:var(--err)}.report-mini.st-stale,.report-mini.st-building{color:var(--warn)}.report-mini.st-ready{color:var(--ok)}.rail{display:flex;flex-direction:column;gap:4px;padding:8px 6px;background:var(--panel);border-inline-end:1px solid var(--line)}.rail-btn{display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 2px;border:0;border-radius:8px;background:transparent;color:var(--ink-3);font-size:11px}.rail-btn:hover{background:var(--panel-2);color:var(--ink)}.rail-btn.on{background:var(--ink);color:var(--paper)}:root[data-layout=tablet] .rail{padding:8px 6px;inline-size:56px}:root[data-layout=tablet] .rail-btn{min-block-size:44px;padding:10px 0}:root[data-layout=tablet] .rail-btn span{display:none}.body{min-block-size:0}.layout-desktop .body{display:grid;grid-template-columns:64px minmax(0,1fr) 344px}.main{display:flex;flex-direction:column;min-block-size:0;min-inline-size:0;position:relative}.layout-desktop .main{display:grid;grid-template-rows:minmax(0,1fr) minmax(250px,38%)}.inspector-col{border-inline-start:1px solid var(--line);background:var(--panel);overflow:auto;min-block-size:0}.canvas{display:flex;flex-direction:column;min-block-size:0;flex:1;background:var(--canvas-bg)}.canvas-head{display:flex;align-items:center;gap:12px;padding:6px 10px;border-block-end:1px solid var(--line);background:var(--panel)}.canvas-tabs{display:inline-flex;gap:2px;padding:2px;border-radius:8px;background:var(--panel-2);border:1px solid var(--line)}.canvas-tabs button{block-size:calc(var(--ctl) - 6px);padding-inline:12px;border:0;border-radius:6px;background:transparent;color:var(--ink-2);white-space:nowrap}.canvas-tabs button.on{background:var(--panel);color:var(--ink);font-weight:500;box-shadow:0 1px 2px #0000001a}.canvas-hint{color:var(--ink-3);font-size:var(--fs-s);margin-inline-start:auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.canvas-body{flex:1;min-block-size:0;display:grid;position:relative}.canvas-body.tab-split{grid-template-columns:1fr 1fr}.pane{position:relative;min-inline-size:0;min-block-size:0}.pane+.pane{border-inline-start:1px solid var(--line)}.plot-host{position:absolute;inset:0;overflow:hidden}.plot{display:block;touch-action:none;user-select:none;font-family:var(--mono)}.plot .grid line{stroke:var(--grid);stroke-width:1}.plot .axis-band{fill:var(--canvas-bg);opacity:.92}.plot .tick-labels text{fill:var(--ink-3);font-size:11.5px}:root[data-layout=tablet] .plot .tick-labels text,:root[data-layout=portrait] .plot .tick-labels text{font-size:13px}.plot .axis-title{fill:var(--ink-2);font:600 11px var(--sans);letter-spacing:.06em}.plot .datum{stroke:var(--line-2);stroke-dasharray:4 4}.plot .datum-label{fill:var(--ink-3);font-size:11px}.plot .traj{fill:none;stroke:var(--traj);stroke-width:2.6;stroke-linejoin:round;stroke-linecap:round}.plot .traj.unsolved{stroke:var(--err);stroke-dasharray:6 5}.plot .traj-halo{fill:none;stroke:var(--canvas-bg);stroke-width:7;stroke-linejoin:round}.plot .target-mark line,.plot .target-mark circle{stroke:var(--target);stroke-width:2;fill:color-mix(in srgb,var(--target) 14%,transparent)}.plot .seg-label circle{fill:var(--canvas-bg);stroke:var(--traj);stroke-width:2}.plot .seg-label text{fill:var(--ink-2);font-size:11.5px;font-weight:500;paint-order:stroke;stroke:var(--canvas-bg);stroke-width:3px}.plot .handle{cursor:grab}.plot .handle:active{cursor:grabbing}.plot .handle .hit{fill:transparent;pointer-events:all}.plot .handle:hover .hit{fill:color-mix(in srgb,var(--accent) 12%,transparent)}.plot .handle-kop .glyph{fill:var(--canvas-bg);stroke:var(--accent);stroke-width:3}.plot .handle-target .glyph{fill:var(--target);stroke:var(--canvas-bg);stroke-width:1.5}.plot .handle text{fill:var(--accent);font-size:12px;font-weight:600;paint-order:stroke;stroke:var(--canvas-bg);stroke-width:3px;pointer-events:none}.plot .construction circle{fill:none;stroke:var(--teach);stroke-width:1.2;stroke-dasharray:5 5;opacity:.8}.plot .construction line{stroke:var(--teach);stroke-width:1;opacity:.8}.plot .construction .centre{fill:var(--teach);stroke:none;opacity:1}.plot .construction text{fill:var(--teach);font-size:12px;paint-order:stroke;stroke:var(--canvas-bg);stroke-width:3px}.plot .vs-line{stroke:var(--ink-3);stroke-dasharray:2 5}.plot .wellhead circle{fill:var(--canvas-bg);stroke:var(--ink);stroke-width:2}.plot .wellhead path{stroke:var(--ink);stroke-width:1.5}.plot .wellhead text{fill:var(--ink);font-size:12px;font-weight:600}.plot .north-arrow path{fill:var(--ink)}.plot .north-arrow text{fill:var(--ink);font-size:11px;font-weight:600}.scene-host{position:absolute;inset:0}.scene-canvas{position:absolute;inset:0;touch-action:none}.scene-canvas canvas{display:block}.scene-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}.scene-label{position:absolute;left:0;top:0;visibility:hidden;white-space:nowrap;display:flex;align-items:center;gap:5px;font:500 12px/1.25 var(--sans);color:var(--ink-2);padding:1px 6px;border-radius:4px;background:color-mix(in srgb,var(--canvas-bg) 80%,transparent);will-change:transform;unicode-bidi:plaintext}.scene-label i{inline-size:9px;block-size:9px;border-radius:2px;flex:none;box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--ink) 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88%,transparent);backdrop-filter:blur(4px)}.bottom{display:flex;flex-direction:column;min-block-size:0;background:var(--panel);border-block-start:1px solid var(--line-2)}.bottom-tabs{display:flex;gap:0;padding-inline:10px;border-block-end:1px solid var(--line);flex:none}.bottom-tabs button{block-size:40px;padding-inline:14px;border:0;border-block-end:2px solid transparent;background:transparent;color:var(--ink-3);font-weight:500;white-space:nowrap}.bottom-tabs button.on{color:var(--ink);border-block-end-color:var(--accent)}.bottom-body{flex:1;min-block-size:0;overflow:auto}.stack{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.7fr) minmax(0,1.25fr);min-block-size:100%}.stack-col{padding:14px 16px;min-inline-size:0}.stack-col+.stack-col{border-inline-start:1px solid var(--line)}.profile-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-block-end:14px}.profile-card{display:flex;align-items:center;gap:6px;padding:6px 10px 6px 4px;border:1px solid var(--line);border-radius:9px;background:var(--panel);text-align:start;min-block-size:56px}.profile-card:hover{border-color:var(--line-2)}.profile-card.on{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);background:var(--canvas-bg)}.profile-glyph{flex:none}.profile-glyph path{fill:none;stroke:var(--traj);stroke-width:3;stroke-linecap:round}.profile-glyph .pg-datum{stroke:var(--line-2);stroke-width:2}.profile-card:not(.on) .profile-glyph path{stroke:var(--ink-3)}.pc-text{display:flex;flex-direction:column;gap:2px;min-inline-size:0}.pc-title{font-weight:600;font-size:13.5px}.pc-desc{display:none}:root[data-layout=tablet] .pc-desc,:root[data-layout=portrait] .pc-desc{display:none}:root[data-layout=tablet] .pc-title,:root[data-layout=portrait] .pc-title{font-size:14px}.param-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px 12px}.param-grid.one{grid-template-columns:1fr}.solved{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.solved-row{display:grid;grid-template-columns:18px minmax(0,1fr) auto;grid-template-areas:"idx kind dls" "idx md inc";row-gap:2px;column-gap:10px;align-items:baseline;gap:8px;padding:7px 0;border-block-end:1px dashed var(--line);font-size:13px}.solved-idx{font:600 12px var(--mono);color:var(--ink-3)}.solved-kind{font-weight:600}.solved-kind em{font-style:normal;font-weight:400;color:var(--ink-3);font-size:12px}.solved-row.kind-build .solved-kind,.solved-row.kind-drop .solved-kind{color:var(--traj)}.solved-row.unsolved{color:var(--err);display:block}.solved-idx{grid-area:idx}.solved-kind{grid-area:kind}.solved-dls{grid-area:dls;text-align:end}.solved-md{grid-area:md;color:var(--ink-2);font-size:12.5px}.solved-inc{grid-area:inc;text-align:end;color:var(--ink-2);font-size:12.5px}:root[data-layout=tablet] .solved-md,:root[data-layout=tablet] .solved-inc,:root[data-layout=portrait] .solved-md,:root[data-layout=portrait] .solved-inc{font-size:14px}.survey-wrap{--survey-head: 48px;block-size:100%;overflow:auto;scroll-padding-block-start:var(--survey-head);scroll-snap-type:y mandatory}.survey tbody tr{scroll-snap-align:start}.survey thead th{block-size:var(--survey-head)}.survey{inline-size:100%;border-collapse:separate;border-spacing:0;font:13px var(--mono);font-variant-numeric:tabular-nums}:root[data-layout=tablet] .survey,:root[data-layout=portrait] .survey{font-size:14px}.survey th{position:sticky;inset-block-start:0;z-index:2;background:var(--panel-2);box-shadow:0 1px 0 var(--line-2);text-align:end;padding:8px 12px;font:600 12.5px var(--sans);color:var(--ink-2);border-block-end:1px solid var(--line-2);white-space:nowrap}.survey th .th-unit{display:block;font:400 11px var(--mono);color:var(--ink-3)}.survey td{text-align:end;padding:5px 12px;border-block-end:1px solid var(--grid);white-space:nowrap}:root[data-layout=tablet] .survey td,:root[data-layout=portrait] .survey td{padding-block:9px}.survey tbody tr:nth-child(2n) td{background:color-mix(in srgb,var(--panel-2) 45%,transparent)}.survey tbody tr:hover td{background:var(--accent-soft)}.survey tr.boundary td{border-block-end:1.5px solid var(--traj)}.inspector{padding:14px 16px 24px;display:flex;flex-direction:column;gap:18px}.insp-sec{display:flex;flex-direction:column}.tiles{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:9px;overflow:hidden}.tile{display:flex;flex-direction:column;gap:3px;padding:9px 11px;background:var(--panel);min-inline-size:0}.tile-label{font-size:12px;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}:root[data-layout=tablet] .tile-label,:root[data-layout=portrait] .tile-label{font-size:13.5px}.tile-value{font-size:17px;font-weight:500}.tile.warn{background:var(--warn-soft)}.tile.warn 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var(--teach);border-radius:10px;background:var(--canvas-bg);padding:12px 14px 14px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow);animation:rise .18s ease-out}.deriv-head{display:flex;align-items:flex-start;gap:6px}.deriv-title{flex:1;min-inline-size:0}.deriv-title .eyebrow{color:var(--teach);margin-block-end:2px}.deriv-title h3{margin:0;font-size:16px;font-weight:600}.deriv-value{font:500 26px var(--mono);letter-spacing:-.01em;text-align:start}[dir=rtl] .deriv-value{text-align:end}.deriv-unit{font-size:15px;color:var(--ink-3);margin-inline-start:6px}.deriv-block{display:flex;flex-direction:column}.deriv-block .eyebrow{margin-block-end:5px}.equation{font:14px/1.55 var(--mono);padding:9px 11px;border-radius:7px;overflow-x:auto;text-align:left;background-color:var(--panel-2);background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:12px 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