.dashboard .exam-readiness,.exam-readiness{border:1px solid var(--border);background:var(--surface);color:var(--text);box-shadow:var(--shadow);border-radius:18px;padding:0;overflow:hidden}.er-heading{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:14px;padding:22px 22px 0;display:flex}.er-kicker{color:var(--accent-text);text-transform:uppercase;letter-spacing:.1em;font-size:.72rem;font-weight:750;display:block}.er-heading h3{letter-spacing:-.02em;margin:4px 0 0;font-size:1.2rem}.er-edit-button{flex-shrink:0;gap:7px;padding:9px 12px;font-size:.78rem}.er-hero{background:radial-gradient(ellipse at top right,color-mix(in srgb,var(--accent) 6%,transparent),transparent 65%);gap:22px;padding:24px 22px;display:grid}.er-date-line{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;display:flex}.er-kind{border:1px solid var(--border-strong);letter-spacing:.015em;border-radius:30px;align-items:center;gap:5px;padding:3px 9px;font-size:.7rem;font-weight:700;display:inline-flex}.er-kind-booked{background:var(--surface-soft);color:var(--accent-text)}.er-kind-tentative{color:var(--muted);border-style:dashed}.er-target-label{overflow-wrap:anywhere;font-size:.88rem;font-weight:650}.er-date{color:var(--muted);margin:0;font-size:.9rem}.er-countdown{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;max-width:420px;margin:20px 0 12px;display:grid}.er-countdown>div{border-left:1px solid var(--border);flex-direction:column;min-width:0;padding-left:13px;display:flex}.er-countdown>div:first-child{border:0;padding-left:0}.er-countdown dt{letter-spacing:.055em;text-transform:uppercase;color:var(--muted);order:2;font-size:.7rem}.er-countdown dd{letter-spacing:-.055em;font-variant-numeric:tabular-nums;margin:0;font-size:clamp(2.1rem,6vw,3.6rem);font-weight:720;line-height:1.15}.er-countdown-note,.er-small{color:var(--muted);overflow-wrap:anywhere;margin:7px 0 0;font-size:.76rem;line-height:1.55}.er-empty-title{letter-spacing:-.04em;margin:12px 0;font-size:1.65rem;font-weight:650;line-height:1.2}.er-empty-copy{max-width:44ch;color:var(--muted);margin:0 0 16px;font-size:.9rem}.er-completion{border-top:1px solid var(--border);align-items:center;gap:18px;padding-top:20px;display:flex}.er-ring{flex-shrink:0;width:132px;height:132px;position:relative}.er-ring svg{width:100%;height:100%;display:block;transform:rotate(-90deg)}.er-ring-track,.er-ring-value{fill:none;stroke-width:7px}.er-ring-track{stroke:var(--border)}.er-ring-value{stroke:var(--accent);stroke-linecap:round;transition:stroke-dashoffset .35s}.er-ring-center{text-align:center;flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.er-ring-center strong{letter-spacing:-.055em;font-variant-numeric:tabular-nums;font-size:2.15rem;font-weight:700;line-height:1}.er-ring-center strong span{color:var(--muted);letter-spacing:-.02em;margin-left:3px;font-size:.95rem;font-weight:500}.er-ring-center small{color:var(--muted);margin-top:7px;font-size:.68rem}.er-completion-copy{min-width:0;color:var(--muted);font-size:.79rem;line-height:1.55}.er-completion-copy strong{color:var(--text);margin-bottom:3px;font-size:.92rem;display:block}.er-status{background:var(--surface-soft);border-block:1px solid var(--border);align-items:flex-start;gap:10px;padding:14px 22px;display:flex}.er-status-icon{width:25px;height:25px;color:var(--accent-text);border:1px solid;border-radius:50%;flex:0 0 25px;place-items:center;margin-top:1px;font-size:.8rem;font-weight:800;display:grid}.er-status strong{font-size:.85rem;display:block}.er-status p{color:var(--muted);margin:3px 0 0;font-size:.78rem;line-height:1.55}.er-status[data-status=behind],.er-status[data-status=buffer],.er-status[data-status=deadline],.er-status[data-status=past]{background:var(--warning-bg)}.er-status[data-status=behind] .er-status-icon,.er-status[data-status=buffer] .er-status-icon,.er-status[data-status=deadline] .er-status-icon,.er-status[data-status=past] .er-status-icon{color:var(--warning)}.er-body{gap:24px;padding:22px;display:grid}.er-subheading{margin:0 0 12px;font-size:.9rem;font-weight:700}.er-pace-row{margin-top:16px}.er-pace-label{justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:6px;font-size:.78rem;display:flex}.er-pace-label span{color:var(--muted)}.er-pace-label strong{font-variant-numeric:tabular-nums;white-space:nowrap;font-size:.9rem}.er-pace-track{background:var(--border);border-radius:9px;height:9px;overflow:hidden}.er-pace-track>span{background:var(--accent);border-radius:9px;height:100%;display:block}.er-pace-track.er-pace-required>span{background:var(--muted)}.er-pace-track.er-pace-unknown{background:repeating-linear-gradient(90deg,var(--border),var(--border) 6px,transparent 6px,transparent 10px);height:8px}.er-projection{background:var(--surface-soft);border:1px solid var(--border);border-radius:10px;margin-top:20px;padding:14px 15px}.er-projection>span{color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:.7rem;display:block}.er-projection>strong{letter-spacing:-.02em;margin-top:5px;font-size:1.15rem;line-height:1.35;display:block}.er-projection p{color:var(--muted);margin:7px 0 0;font-size:.76rem;line-height:1.55}.er-week{grid-template-columns:repeat(7,minmax(0,1fr));gap:5px;margin:12px 0 10px;padding:0;list-style:none;display:grid}.er-week li{border:1px solid var(--border);background:var(--surface);min-height:54px;color:var(--muted);border-radius:8px;flex-direction:column;justify-content:center;align-items:center;gap:3px;min-width:0;margin:0;font-size:.68rem;display:flex}.er-week li.er-study-day{border-color:var(--accent);background:var(--surface-soft);color:var(--accent-text)}.er-week-marker{font-size:.72rem;font-weight:800;line-height:1}.er-schedule-facts{grid-template-columns:1fr 1fr;gap:12px;margin:17px 0 0;display:grid}.er-schedule-facts>div{border-top:1px solid var(--border);padding-top:10px}.er-schedule-facts dt{color:var(--muted);font-size:.73rem}.er-schedule-facts dd{font-variant-numeric:tabular-nums;margin:3px 0 0;font-size:.85rem;font-weight:650}.er-targets{padding:0 22px 20px}.er-targets summary{color:var(--accent-text);border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:12px;padding-top:8px;font-size:.82rem;font-weight:650;list-style:none;display:flex}.er-targets summary:after{content:"+";font-size:1.1rem}.er-targets[open] summary:after{content:"−"}.er-targets details,.er-targets{border-top:0;margin:0}.er-target-list{gap:8px;margin:12px 0 0;padding:0;list-style:none;display:grid}.er-target-item{border:1px solid var(--border);border-radius:9px;justify-content:space-between;align-items:center;gap:12px;margin:0;padding:11px 13px;display:flex}.er-target-item>div{min-width:0}.er-target-item strong{overflow-wrap:anywhere;font-size:.79rem;display:block}.er-target-item small{color:var(--muted);margin-top:3px;font-size:.73rem;display:block}.er-target-item.er-target-current{border-color:var(--accent)}.er-honesty{color:var(--muted);border-top:1px solid var(--border);margin:0;padding:16px 22px 20px;font-size:.74rem;line-height:1.55}.er-editor{border-top:1px solid var(--border);background:var(--surface-soft);padding:22px}.er-editor-heading{justify-content:space-between;align-items:flex-start;gap:15px;margin-bottom:16px;display:flex}.er-editor-heading h4{margin:0;font-size:1.03rem}.er-editor-heading p{color:var(--muted);max-width:70ch;margin:6px 0 0;font-size:.78rem}.er-target-fields{border:1px solid var(--border-strong);background:var(--surface);border-radius:11px;min-width:0;margin:0 0 14px;padding:15px}.er-target-fields legend{padding:0 7px;font-size:.82rem;font-weight:700}.er-form-grid{grid-template-columns:1fr;gap:10px;display:grid}.er-form-grid label,.er-buffer-field{margin:0;font-size:.78rem}.er-editor input:not([type=checkbox]),.er-editor select{min-width:0;max-width:100%;min-height:46px;margin-top:5px;padding:10px;font-size:1rem}.er-field-wide{grid-column:1/-1}.er-remove{min-height:44px;color:var(--error);text-underline-offset:3px;background:0 0;border-color:#0000;margin-top:10px;padding:7px 10px;font-size:.75rem;text-decoration:underline}.er-add{margin-bottom:18px;font-size:.8rem}.er-weekdays-field{border:0;min-width:0;margin:2px 0 18px;padding:0}.er-weekdays-field legend{margin-bottom:8px;padding:0;font-size:.82rem;font-weight:650}.er-weekday-options{flex-wrap:wrap;gap:7px;display:flex}.er-weekday-options label{border:1px solid var(--border-strong);background:var(--surface);cursor:pointer;border-radius:8px;align-items:center;gap:7px;min-height:44px;margin:0;padding:8px 10px;font-size:.78rem;display:flex}.er-weekday-options label:has(input:checked){border-color:var(--accent);color:var(--accent-text);background:var(--hover)}.er-weekday-options input[type=checkbox]{appearance:auto;width:18px;height:18px;min-height:0;accent-color:var(--accent);margin:0;padding:0;display:inline-block}.er-buffer-field{max-width:285px;display:block}.er-editor-actions{flex-wrap:wrap;gap:9px;margin-top:18px;display:flex}.er-editor-actions button{font-size:.8rem}.er-save{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.er-save:hover{background:var(--accent-hover)}.er-errors{border-left:3px solid var(--error);background:var(--error-bg);margin:12px 0;padding:12px 15px;font-size:.8rem}.er-errors ul{margin:6px 0 0;padding-left:18px}.er-errors li{margin:4px 0}.er-save-feedback{color:var(--accent-text);margin:0 0 12px;padding:0 22px;font-size:.78rem}@media (width>=540px){.er-form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.er-target-kind{grid-column:1/-1}.er-countdown{gap:18px}}@media (width>=760px){.er-heading{padding:25px 28px 0}.er-hero{grid-template-columns:minmax(0,1fr) 230px;gap:30px;padding:24px 28px 27px}.er-completion{border-top:0;border-left:1px solid var(--border);text-align:center;flex-direction:column;justify-content:center;gap:10px;padding:0 0 0 26px}.er-ring{width:151px;height:151px}.er-ring-center strong{font-size:2.55rem}.er-completion-copy{max-width:22ch;font-size:.77rem}.er-body{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;padding:24px 28px}.er-schedule{border-left:1px solid var(--border);padding-left:30px}.er-status,.er-targets,.er-honesty{padding-inline:28px}.er-editor{padding:25px 28px}.er-save-feedback{padding-inline:28px}.er-form-grid{grid-template-columns:1.2fr 1fr 1fr}.er-target-kind{grid-column:auto}}@media (width<=360px){.er-heading,.er-hero,.er-body,.er-editor{padding-left:15px;padding-right:15px}.er-countdown{gap:6px}.er-countdown>div{padding-left:9px}.er-countdown dd{font-size:2.05rem}.er-completion{gap:12px}.er-ring{width:115px;height:115px}.er-ring-center strong{font-size:1.9rem}.er-week{gap:3px}.er-week li{font-size:.64rem}}@media (prefers-reduced-motion:reduce){.er-ring-value{transition:none}}.numeric-lab{--nl-blue:var(--skills,#2967a7);--nl-gold:var(--warning,#a36500);font-variant-numeric:tabular-nums;min-width:0}.numeric-lab .nl-toggle input{flex:0 0 22px;width:22px;min-width:22px;height:22px;min-height:22px;margin:0;padding:0}.numeric-lab p{max-width:75ch}.nl-objective{background:var(--surface);border-left:4px solid var(--accent);border-radius:6px;gap:.25rem;padding:.85rem 1rem;display:grid}.nl-objective>strong,.nl-predict>strong{color:var(--accent-text)}.nl-predict{border:1px solid var(--border-strong);border-radius:10px;margin:1rem 0;padding:.9rem 1rem}.nl-predict p{margin:.4rem 0 .7rem}.nl-presets{border:0;margin:1rem 0;padding:0}.nl-presets legend{font-weight:750}.nl-presets>p{color:var(--muted);margin:.25rem 0 .6rem;font-size:.9rem}.nl-presets>div{flex-wrap:wrap;gap:.5rem;display:flex}.nl-presets button[aria-pressed=true]{border-color:var(--accent);background:var(--accent);color:var(--on-accent)}.nl-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:1.2rem 0;display:grid}.nl-controls label{min-width:0;display:block}.nl-controls label>span{flex-wrap:wrap;justify-content:space-between;gap:.2rem .6rem;font-weight:650;display:flex}.nl-controls output{color:var(--accent-text);white-space:nowrap}.nl-controls input[type=range]{width:100%;min-height:44px;accent-color:var(--accent);margin:0;display:block}.nl-controls small{color:var(--muted)}.nl-controls .nl-toggle{align-items:center;gap:.6rem;min-height:44px;display:flex}.nl-toggle input{width:22px;min-width:22px;height:22px;accent-color:var(--accent)}.nl-notice{border-left:3px solid var(--nl-blue);background:var(--surface);border-radius:4px;padding:.65rem .85rem}.nl-figure{border:1px solid var(--border-strong);background:var(--surface);border-radius:12px;margin:1rem 0;padding:1rem;overflow:hidden}.nl-figure figcaption{color:var(--muted);border-top:1px solid var(--border);margin-top:1rem;padding-top:.8rem;font-size:.92rem;line-height:1.5}.lesson-interactive .numeric-diagram{width:100%;max-width:600px;height:auto;max-height:none;margin:.4rem auto 1rem;display:block;overflow:visible}.nl-text{fill:var(--text);font-family:inherit;font-size:17px}.nl-emphasis{fill:var(--accent-text);font-size:21px;font-weight:750}.nl-wire{stroke:var(--text);fill:none;stroke-width:2.8px;stroke-linejoin:round;stroke-linecap:round}.nl-muted-wire{stroke:var(--muted);stroke-dasharray:7 5}.nl-resistor{fill:var(--surface-soft);stroke:var(--accent-text);stroke-width:3px}.nl-dot{fill:var(--text)}.nl-enclosure{fill:var(--surface-soft);stroke:var(--border-strong);stroke-width:2px;stroke-dasharray:7 5}.nl-coil{fill:none;stroke:var(--nl-blue);stroke-width:3px}.nl-conductor{fill:var(--surface-soft);stroke:var(--text);stroke-width:2px}.nl-face{fill:var(--nl-blue);fill-opacity:.22;stroke:var(--nl-blue);stroke-width:3px}.nl-allocation>strong{font-size:.95rem}.nl-allocation-bar{outline:1px solid var(--border-strong);border-radius:4px;height:26px;margin:.5rem 0;display:flex;overflow:hidden}.nl-allocation-bar span+span{border-left:2px solid var(--surface)}.nl-tone-0,.nl-budget-used{background:var(--accent)}.nl-tone-1{background:var(--nl-blue)}.nl-tone-2,.nl-tone-warning,.nl-budget-excess{background:var(--nl-gold);background-image:repeating-linear-gradient(135deg,#0000 0 7px,#ffffff3b 7px 10px)}.nl-key{flex-wrap:wrap;gap:.4rem 1rem;margin:.4rem 0;padding:0;font-size:.92rem;list-style:none;display:flex}.nl-key li{flex-wrap:wrap;align-items:center;gap:.35rem;display:flex}.nl-key i{border:1px solid var(--border-strong);flex:none;width:15px;height:15px;display:inline-block}.nl-equation{background:var(--surface-soft);overflow-wrap:anywhere;border-radius:8px;padding:.7rem .85rem}.nl-caution{border:1px solid var(--warning);background:var(--warning-bg);color:var(--text);border-left-width:4px;border-radius:6px;padding:.75rem 1rem}.nl-power-heading{justify-content:space-between;align-items:center;gap:1rem;display:flex}.nl-power-heading strong{font-size:1.25rem}.nl-power-heading>span:nth-child(2){font-size:2rem}.nl-power-split{border:1px solid var(--border-strong);border-radius:5px;width:100%;height:36px;margin:.8rem 0;display:flex;overflow:hidden}.nl-power-split>div{flex-basis:0;min-width:0}.nl-energy-area{fill:var(--nl-blue);fill-opacity:.24;stroke:var(--nl-blue);stroke-width:2px}.nl-ni-scale{flex-wrap:wrap;justify-content:space-between;gap:.4rem;font-size:.85rem;display:flex}.nl-ni-scale>div{background:var(--surface-soft);border:1px solid var(--border-strong);width:100%;height:25px}.nl-ni-scale i{background:var(--nl-blue);height:100%;display:block}.nl-array-scroll{overscroll-behavior-x:contain;padding:.3rem .3rem 1rem;overflow-x:auto}.nl-array-rail-labels{color:var(--muted);justify-content:space-between;font-size:.8rem;display:flex}.nl-string{border-left:3px solid var(--text);border-right:3px solid var(--text);padding:.5rem 22px .8rem;position:relative}.nl-string-label{text-align:center;margin:0 0 .5rem;font-size:.88rem;font-weight:650}.nl-string-line{justify-content:space-around;gap:24px;display:flex;position:relative}.nl-string-line:before{content:"";background:var(--text);height:3px;position:absolute;top:50%;left:-24px;right:-24px}.nl-cell{text-align:center;border:2px solid var(--nl-blue);background:var(--surface);border-radius:3px;flex:1;align-content:center;gap:.18rem;min-width:55px;max-width:98px;min-height:82px;padding:.3rem;font-size:.78rem;line-height:1.3;display:grid;position:relative}.nl-cell-polarity{justify-content:space-between;font-size:.92rem;display:flex}.nl-pv .nl-cell{background:linear-gradient(90deg,transparent 48%,var(--border) 49% 51%,transparent 52%),linear-gradient(0deg,transparent 48%,var(--border) 49% 51%,transparent 52%),var(--surface-soft);background-size:24px 24px}.nl-pv .nl-cell strong,.nl-pv .nl-cell>span:not(.nl-cell-polarity){background:var(--surface);padding:1px}.nl-batteries .nl-cell{border-color:var(--accent);border-radius:8px}.nl-array-result{background:var(--surface-soft);border-radius:8px;gap:.6rem;margin-top:.8rem;padding:.7rem;display:grid}.nl-switch{border:2px solid var(--border-strong);background:var(--surface-soft);border-radius:10px;padding:1rem}.nl-ports{grid-template-columns:repeat(4,minmax(0,1fr));gap:.6rem;margin-top:.8rem;display:grid}.nl-ports>div{border:2px solid var(--text);background:var(--surface);text-align:center;border-top-width:7px;border-radius:3px;padding:.35rem;font-size:.85rem;display:grid}.nl-budget-label{flex-wrap:wrap;justify-content:space-between;gap:.5rem;margin-top:1rem;font-size:.95rem;display:flex}.nl-budget-track{background:var(--surface-soft);outline:1px solid var(--border-strong);height:32px;margin:.8rem 3px;display:flex;position:relative}.nl-budget-marker{background:var(--text);width:3px;position:absolute;top:-5px;bottom:-5px;transform:translate(-100%)}.nl-worked{border:1px solid var(--border);background:var(--surface);border-radius:10px;margin:1rem 0;padding:1rem}.nl-worked h4{margin:0 0 .6rem;font-size:1rem}.nl-worked ol{margin:.5rem 0 0;padding-left:1.5rem}.nl-worked li{overflow-wrap:anywhere;padding:.35rem 0 .35rem .2rem}.nl-worked li::marker{color:var(--accent-text);font-weight:750}.nl-results dl{grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem;margin:.8rem 0;display:grid}.nl-results dl>div{border:1px solid var(--border);background:var(--surface);border-radius:8px;padding:.7rem}.nl-results dt{color:var(--muted);font-size:.9rem}.nl-results dd{overflow-wrap:anywhere;margin:.15rem 0 0;font-size:1.16rem;font-weight:750}.nl-boundary{color:var(--muted);font-size:.85rem}.nl-dialog h4{max-width:65ch}.nl-dialog .numeric-diagram{width:100%;max-width:760px;height:auto;max-height:none}.nl-dialog{max-height:90vh;overflow:auto}.nl-diagram-scroll{overscroll-behavior-x:contain;min-width:0;max-width:100%;padding:.3rem 0;overflow-x:auto}.lesson-interactive .nl-diagram-scroll .numeric-diagram{min-width:480px}.nl-scroll-hint{color:var(--muted);margin:.2rem .35rem .8rem;font-size:.85rem;display:none}.nl-zoom-scroll{max-height:65vh;padding:.5rem;overflow:auto}.nl-dialog .nl-zoom-scroll .numeric-diagram{min-width:600px;max-width:none;max-height:none}@media (width<=650px){.nl-controls{grid-template-columns:1fr}.nl-figure{padding:.65rem .4rem}.nl-figure figcaption{padding:.75rem .35rem 0}.nl-presets>div{display:grid}.nl-presets button{justify-content:flex-start;width:100%}.nl-results dl{grid-template-columns:1fr}.nl-worked{padding:.75rem}.nl-ports{grid-template-columns:repeat(2,minmax(0,1fr))}.nl-power-heading{font-size:.92rem}.nl-power-heading strong{font-size:1.05rem}.nl-text{font-size:18px}.nl-emphasis{font-size:21px}.nl-objective,.nl-predict{padding:.75rem}.nl-dialog .interaction-zoom-heading{align-items:flex-start}.nl-dialog h4{font-size:1rem}.nl-dialog .interaction-zoom-heading button{flex:none}}@media (prefers-reduced-motion:reduce){.numeric-lab *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}@media (width<=650px){.nl-scroll-hint{display:block}}.nl-svg-tap,.nl-equipment-tap{cursor:pointer;touch-action:manipulation}.nl-svg-tap{outline:none}.nl-svg-hit{fill:#0000;stroke:var(--diagram-current,#ffd253);stroke-opacity:.45;stroke-width:1.5px;stroke-dasharray:4 5;vector-effect:non-scaling-stroke}.nl-svg-tap:is(:hover,:focus-visible,:active) .nl-svg-hit{fill:var(--diagram-current,#ffd253);fill-opacity:.08;stroke-opacity:1;stroke-width:3px;stroke-dasharray:none}.numeric-lab .nl-cell.nl-equipment-tap{min-width:55px;min-height:82px;color:var(--text);font-family:inherit;font-weight:inherit}.numeric-lab .nl-port-tap{width:100%;min-width:44px;min-height:48px;color:inherit;font:inherit;background:0 0;border:0;border-radius:0;justify-content:center;gap:.15rem;padding:.2rem;line-height:1.35;display:grid}.numeric-lab .nl-equipment-tap:focus-visible{outline:3px solid var(--diagram-current,#ffd253);outline-offset:3px}.numeric-lab .nl-equipment-tap:hover{outline:2px solid var(--diagram-current,#ffd253);outline-offset:2px}.nl-tap-hint{border-left:3px solid var(--diagram-current,#ffd253);color:var(--text);background:var(--surface-soft);padding:.55rem .7rem;font-size:.9rem;line-height:1.5}.nl-layout-choice{white-space:normal;max-width:100%;min-height:44px;margin:.2rem 0 .6rem}.nl-diagram-scroll.nl-portrait{padding:0;overflow:visible}.lesson-interactive .nl-diagram-scroll.nl-portrait .numeric-diagram{width:100%;min-width:0;max-width:380px;margin:.3rem auto .7rem}.nl-portrait .nl-text{font-size:22px}.nl-portrait .nl-emphasis{font-size:25px}.nl-portrait .nl-source-mark{fill:var(--diagram-paper,#102d50);font-weight:700}.nl-portrait .nl-svg-hit{stroke-opacity:0}.nl-portrait .nl-svg-tap:is(:hover,:focus-visible,:active) .nl-svg-hit{stroke-opacity:1}.numeric-lab .nl-figure .nl-caution{background:var(--surface-soft);color:var(--text)}.nl-array-node-key{margin:.5rem 0 1rem;font-size:.95rem;line-height:1.5}.nl-array-portrait{grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem;max-width:440px;margin:0 auto;display:grid}.nl-portrait-string{border:1px solid var(--border-strong);border-radius:8px;min-width:0;padding:.55rem}.nl-portrait-string h5{text-align:center;color:var(--text);margin:0;font-size:1rem}.nl-portrait-string>p{text-align:center;overflow-wrap:anywhere;margin:.35rem 0 .6rem;font-size:.94rem;line-height:1.4}.nl-vertical-string{flex-direction:column;align-items:center;gap:18px;display:flex;position:relative}.nl-vertical-string:before{content:"";background:var(--diagram-wire,var(--text));width:3px;position:absolute;top:12px;bottom:12px;left:calc(50% - 1.5px)}.numeric-lab .nl-portrait-cell.nl-cell{flex:none;gap:.05rem;width:100%;min-width:0;max-width:130px;min-height:92px;padding:.3rem .2rem;font-size:.95rem}.nl-portrait-cell .nl-vertical-terminal{background:0 0;font-size:1.05rem;font-weight:800;line-height:1.05}.nl-common-node{border:1px solid var(--border-strong);background:var(--surface);border-radius:4px;padding:.2rem .45rem;font-size:.9rem;font-weight:700;position:relative}.nl-switch>strong,.nl-budget-label>span{overflow-wrap:anywhere}@media (width<=650px){.nl-scroll-hint{display:none}.nl-ports{grid-template-columns:repeat(2,minmax(0,1fr))}.nl-switch{padding:.65rem}.nl-ports>div{min-width:0}.nl-power-heading{flex-wrap:wrap;gap:.65rem}.nl-power-heading>span{max-width:100%}.nl-power-heading>span:nth-child(2){font-size:1.3rem}}.ctl-lab{--ctl-ink:#233b49;--ctl-accent:#126965;--ctl-soft:#e7f3f0;--ctl-border:#b6c9cb;--ctl-warn:#a74b21;color:var(--text,#18313f);gap:1rem;display:grid}.ctl-lab p{margin:.35rem 0;line-height:1.6}.ctl-objective{background:var(--ctl-soft);border-left:4px solid var(--ctl-accent);color:var(--ctl-ink);border-radius:0 .55rem .55rem 0;padding:.85rem 1rem}.ctl-figure{border:1px solid var(--ctl-border);color:var(--ctl-ink);background:#f7fafb;border-radius:1rem;margin:0;padding:.8rem;overflow:hidden}.ctl-figure-wrap{gap:.5rem;min-width:0;display:grid}.ctl-diagram-scroll{border-radius:.5rem;max-width:100%;overflow-x:auto}.ctl-diagram-scroll:focus-visible{outline-offset:-3px;outline:3px solid #da9b21}.ctl-figure svg,.ctl-zoom svg{width:100%;height:auto;display:block;background:0 0!important;max-height:none!important}.ctl-figure svg text,.ctl-zoom svg text{fill:var(--ctl-ink);stroke:none;font-family:inherit;font-size:16px;font-weight:550}.ctl-figure figcaption{color:#405c6b;margin:.5rem .25rem 0;font-size:.86rem;line-height:1.5}.ctl-enlarge{justify-self:start;min-height:44px}.ctl-zoom{width:min(900px,95vw);max-width:95vw;color:var(--ctl-ink);background:#f7fafb;border:1px solid #536b78;border-radius:12px;padding:1rem}.ctl-zoom::backdrop{background:#18313faa}.ctl-zoom p{margin:.8rem 0;line-height:1.5}.ctl-zoom .ctl-diagram-scroll svg{min-width:600px;max-width:none}.ctl-zoom button{min-height:44px}.ctl-check>span{overflow-wrap:break-word;min-width:0}.ctl-wire{fill:none;stroke:#536b78;stroke-width:3px;stroke-linejoin:round;stroke-linecap:round}.ctl-live{stroke:#05736a;stroke-width:5px}.ctl-link{fill:none;stroke:#788b95;stroke-width:2px;stroke-dasharray:6 5}.ctl-wave{fill:none;stroke:#076e69;stroke-width:4px}.ctl-coil{fill:none;stroke:#b56321;stroke-width:4px}.ctl-magnet-n{fill:#f0a195;stroke:#904735;stroke-width:2px}.ctl-magnet-s{fill:#9ac7e0;stroke:#376584;stroke-width:2px}.ctl-thermal-a{fill:none;stroke:#a65623;stroke-width:5px}.ctl-thermal-b{fill:none;stroke:#236f95;stroke-width:5px}.ctl-crystal{fill:#d5c4ee;stroke:#785596;stroke-width:3px}.ctl-cell{fill:#447caa;stroke:#224c71;stroke-width:3px}.ctl-light-ray{fill:none;stroke:#b88916;stroke-width:5px}.ctl-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:.85rem;display:grid}.ctl-controls>label{align-content:start;gap:.4rem;font-size:.9rem;font-weight:650;display:grid}.ctl-lab select{border:1px solid var(--ctl-border);background:var(--surface,#fff);width:100%;min-height:44px;color:var(--text,#18313f);font:inherit;border-radius:.5rem;padding:.55rem}.ctl-range{gap:.6rem;display:grid}.ctl-range>span{flex-wrap:wrap;justify-content:space-between;gap:.5rem;font-size:.94rem;font-weight:650;display:flex}.ctl-range output{font-variant-numeric:tabular-nums;font-weight:800}.ctl-range input{accent-color:#126965;cursor:pointer;width:100%;height:30px}.ctl-actions,.ctl-steps{flex-wrap:wrap;gap:.6rem;display:flex}.ctl-actions button,.ctl-steps button,.ctl-lab>button,.ctl-controls>button,.ctl-trace button{border:1px solid var(--ctl-border);background:var(--surface,#fff);min-height:44px;color:var(--text,#18313f);font:inherit;cursor:pointer;white-space:normal;border-radius:.55rem;padding:.65rem .85rem;font-size:.9rem;line-height:1.3}.ctl-steps button{flex:160px}.ctl-lab button[aria-pressed=true]{color:#fff;background:#126965;border-color:#126965}.ctl-lab button:disabled{opacity:.5;cursor:default}.ctl-lab :is(button,input,select,a,summary):focus-visible{outline-offset:3px;outline:3px solid #da9b21}.ctl-check{align-items:center;gap:.65rem;min-height:44px;padding:.25rem 0;font-weight:600;display:flex}.ctl-check input{accent-color:#126965;flex:none;width:22px;height:22px}.ctl-result{border:1px solid var(--ctl-border);background:var(--surface,#fff);border-radius:.7rem;padding:1rem}.ctl-result>strong{margin-bottom:.35rem;font-size:1.05rem;display:block}.ctl-metrics{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:.65rem;margin:0;display:grid}.ctl-metrics>div{background:var(--ctl-soft);color:var(--ctl-ink);border-radius:.6rem;padding:.85rem}.ctl-metrics dt{font-size:.85rem}.ctl-metrics dd{font-variant-numeric:tabular-nums;margin:.3rem 0 0;font-size:1rem;font-weight:700}.ctl-guide{margin:.2rem 0;padding-left:1.4rem;line-height:1.7}.ctl-note{opacity:.88;font-size:.85rem}.ctl-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.8rem;display:flex}.ctl-footer a{color:inherit;text-underline-offset:3px;font-size:.8rem;text-decoration:underline}.ctl-footer button{min-height:44px}.ctl-rating{background:var(--ctl-soft);color:var(--ctl-ink);border-radius:.6rem;gap:.5rem;padding:.8rem;display:grid}.ctl-rating meter{width:100%;height:22px}.ctl-table{border-collapse:collapse;width:100%;margin-top:.75rem;font-size:.9rem}.ctl-table td,.ctl-table th{text-align:left;border-bottom:1px solid var(--ctl-border);padding:.55rem}.ctl-selected-row{background:var(--ctl-soft);color:var(--ctl-ink);font-weight:700}.ctl-annunciator{flex-wrap:wrap;gap:.5rem;display:flex}.ctl-annunciator span{text-align:center;border:1px solid var(--ctl-border);border-radius:.5rem;flex:1;padding:.75rem .5rem;font-size:.9rem}.ctl-annunciator .ctl-state-on{color:#fff;background:#233b49;font-weight:800}.ctl-trace{flex-wrap:wrap;align-items:center;gap:.8rem;display:flex}.ctl-lab details>summary{cursor:pointer;min-height:44px;padding:.6rem 0}@media (width<=600px){.ctl-controls{grid-template-columns:1fr}.ctl-figure{padding:.35rem}.ctl-figure figcaption{margin:.55rem;font-size:.84rem}.ctl-actions button{flex:120px}.ctl-steps button{flex-basis:130px;font-size:.83rem}.ctl-result{padding:.8rem}.ctl-metrics{grid-template-columns:1fr}.ctl-objective{padding:.75rem}.ctl-footer{flex-direction:column;align-items:flex-start}}@media (prefers-reduced-motion:reduce){.ctl-lab *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.ctl-normal{fill:none;stroke:#6753a0;stroke-width:3px}.ctl-lab{--ctl-ink:var(--text,#243442);--ctl-paper:#102d50;--ctl-accent:#24598d;--ctl-soft:var(--surface-soft,#eaf1f6);--ctl-border:var(--border,#bac6cf);--ctl-copper:#d58b4c;--ctl-warn:#ffb388}.ctl-figure,.ctl-zoom{--ctl-ink:#edf5ff;--ctl-paper:#102d50;--ctl-border:#416284;--ctl-accent:#ffd253;background:var(--ctl-paper);color:var(--ctl-ink);border-color:var(--ctl-border)}.ctl-figure{padding:1rem .8rem .8rem;box-shadow:0 3px #081b30}.ctl-stage{overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#7399bd var(--ctl-paper);padding:.3rem 0}.ctl-figure svg text,.ctl-zoom svg text{fill:#edf5ff;paint-order:stroke;stroke:#102d50;stroke-width:2px;stroke-linejoin:round;font-weight:600}.ctl-wire{stroke:#d9e5f1;stroke-width:3.5px}.ctl-live{stroke:#ffd253;stroke-width:5.5px;stroke-dasharray:none;animation:none}.ctl-warning{stroke:#ffb388;stroke-width:5.5px}.ctl-part{fill:#173e67;stroke:#b1c5d8;stroke-width:2.5px}.ctl-terminal{fill:#d58b4c;stroke:#edf5ff;stroke-width:2.5px}.ctl-terminal-pad{fill:#9d6437;stroke:#e7b383;stroke-width:1.5px}.ctl-resistor-body{fill:#b6804e;stroke:#f2c99b;stroke-width:2.5px}.ctl-resistance-detail{fill:none;stroke:#563017;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round}.ctl-body-glint{fill:none;stroke:#ffe7cf;stroke-width:2px;opacity:.7}.ctl-chime-body{fill:#264d74;stroke:#a9c4de;stroke-width:2px}.ctl-chime-active{fill:#38566c;stroke:#ffd253;stroke-width:3px}.ctl-case{fill:#204469;stroke:#c2d3e3;stroke-width:3px}.ctl-lamp{fill:#284965;stroke:#abc5dc;stroke-width:2px}.ctl-lit{fill:#ffd253;stroke:#ffe49a;stroke-width:3px}.ctl-node{fill:#ffd253;stroke:#102d50;stroke-width:2px}.ctl-link{stroke:#98b4cf;stroke-width:2.3px}.ctl-coil{stroke:#d58b4c;stroke-width:5px}.ctl-wave{stroke:#ffd253;stroke-width:4px}.ctl-normal{stroke:#c3acf7}.ctl-magnet-n{fill:#9d3f45;stroke:#f39b91}.ctl-magnet-s{fill:#265c89;stroke:#8bcefb}.ctl-thermal-a{stroke:#d58b4c}.ctl-thermal-b{stroke:#68beee}.ctl-crystal{fill:#674a90;stroke:#c8afe8}.ctl-cell{fill:#24598d;stroke:#7fbae9}.ctl-light-ray{stroke:#ffd253}.ctl-capacity{fill:#408f83}.ctl-used{fill:#ba7944}.ctl-figure figcaption{color:#bbcee2;border-top:1px solid #416284;margin:.75rem .2rem 0;padding:.75rem .2rem 0;font-size:.9rem}.ctl-scroll-hint{color:#bbcee2;font-size:.85rem;display:none}.ctl-diagram-tap{cursor:pointer;touch-action:manipulation;outline:none}.ctl-hit-target{fill:#0000;stroke:#83a4c6;stroke-width:1px;stroke-dasharray:4 4;pointer-events:all}.ctl-diagram-tap:hover>.ctl-hit-target,.ctl-diagram-tap:focus-visible>.ctl-hit-target{fill:#ffd2530d;stroke:#ffd253;stroke-width:2.5px;stroke-dasharray:none}.ctl-guide{counter-reset:ctl-step;gap:.6rem;padding:0;list-style:none;display:grid}.ctl-guide li{counter-increment:ctl-step;border:1px solid var(--ctl-border);border-radius:9px;padding:.65rem .7rem .65rem 2.8rem;position:relative}.ctl-guide li:before{content:counter(ctl-step);background:var(--ctl-accent);color:#fff;border-radius:50%;place-items:center;width:1.55rem;height:1.55rem;font-size:.85rem;font-weight:800;display:grid;position:absolute;top:.7rem;left:.65rem}.ctl-lab button[aria-pressed=true]{background:var(--ctl-accent);border-color:var(--ctl-accent)}.ctl-range input,.ctl-check input{accent-color:var(--ctl-accent)}@media (width<=600px){.ctl-figure{padding:.65rem .35rem .5rem}.ctl-stage svg{min-width:520px}.ctl-figure svg text,.ctl-zoom svg text{font-size:18px}.ctl-scroll-hint{display:block;margin:.45rem .4rem!important}.ctl-figure figcaption{margin:.55rem .35rem 0;font-size:.9rem}}.ctl-figure .ctl-portrait-drawing{display:none}.ctl-tap-note{color:#bbcee2;padding:.3rem .25rem;font-size:.88rem;line-height:1.5}@media (width<=600px){.ctl-has-portrait .ctl-stage{overflow:visible}.ctl-has-portrait .ctl-wide-drawing{display:none}.ctl-has-portrait .ctl-portrait-drawing{width:100%;min-width:0;max-width:340px;margin:auto;display:block}.ctl-has-portrait .ctl-portrait-drawing text{stroke-width:1.2px;font-size:17px}.ctl-has-portrait .ctl-portrait-drawing .ctl-hit-target{stroke-width:1.2px}}.installation-lab{--il-blue:#1260aa;--il-orange:#a44515;--il-paper:#fff;--il-ink:#203347;color:inherit;gap:16px;min-width:0;display:grid}.installation-lab p{margin:0;line-height:1.55}.installation-lab .il-objective{border-left:4px solid var(--il-blue);background:color-mix(in srgb,var(--il-blue) 7%,transparent);padding:14px 16px}.il-choices{border:0;min-width:0;margin:0;padding:0}.il-choices legend{margin-bottom:8px;font-weight:700}.il-choices>div{flex-wrap:wrap;gap:8px;display:flex}.installation-lab .il-choices button{min-height:44px;color:inherit;font:inherit;cursor:pointer;background:0 0;border:1px solid #9aabbc;border-radius:8px;padding:9px 13px;font-size:.95rem}.installation-lab .il-choices button[aria-pressed=true]{color:#fff;background:var(--il-blue);border-color:var(--il-blue)}.installation-lab :is(button,input):focus-visible{outline-offset:3px;outline:3px solid #c67b12}.il-slider{gap:7px;display:grid}.il-slider>span{justify-content:space-between;gap:16px;display:flex}.il-slider input{width:100%;height:32px;accent-color:var(--il-blue);margin:0}.il-slider strong{white-space:nowrap}.il-toggle{cursor:pointer;align-items:center;gap:12px;min-height:44px;line-height:1.4;display:flex}.il-toggle input{width:21px;min-width:21px;height:21px;accent-color:var(--il-blue);margin:0}.installation-lab .il-diagram{color:var(--il-ink);background:#f8fbff;border:1px solid #b8c7d7;border-radius:14px;overflow:hidden}.installation-lab .il-diagram svg{width:100%;height:auto;max-height:380px;margin:auto;font-family:inherit;display:block}.il-diagram text{fill:var(--il-ink);font-size:17px;font-weight:550}.il-outline{fill:none;stroke:#53697e;stroke-width:2.5px}.il-wire{fill:none;stroke:#305b82;stroke-width:4px;stroke-linecap:round;stroke-linejoin:round}.il-selected-wire{fill:none;stroke:#1260aa;stroke-width:6px;stroke-linecap:round;stroke-linejoin:round}.il-muted-wire{fill:none;stroke:#a7b8c8;stroke-width:3px;stroke-dasharray:6 5}.il-fault-wire{fill:none;stroke:#ad421a;stroke-width:4px;stroke-linecap:round}.il-probe{fill:none;stroke:#963b66;stroke-width:3.5px}.il-mask{fill:none;stroke:#f8fbff;stroke-width:10px}.il-cable{fill:none;stroke:#546371;stroke-width:24px;stroke-linecap:round}.il-core{fill:none;stroke:#b96b32;stroke-width:13px}.il-device,.il-label-bg{fill:#fff;stroke:#53697e;stroke-width:2px}.il-highlight{fill:#d8eafe;stroke:#1260aa;stroke-width:3px}.il-meter{fill:#fff2cc;stroke:#775f23;stroke-width:3px}.il-conduit{fill:#d7dfe7;stroke:#718495;stroke-width:3px}.il-water{fill:#e3f3ff;stroke:#99c2df}.il-surface,.il-interior{fill:#f8fbff;stroke:#718495;stroke-width:2px}.il-drop{fill:#83bddf}.il-node{fill:#203347}.il-resistor{fill:#f9e4d3;stroke:#85572b;stroke-width:2.5px}.il-clamp{fill:none;stroke:#9a7317;stroke-width:12px}.il-copper{fill:#cd8b53;stroke:#784724;stroke-width:2px}.il-dimension{fill:none;stroke:#174d7c;stroke-width:1.5px;stroke-dasharray:3 3}.il-heat{fill:#e78b44}.il-figure{gap:8px;min-width:0;display:grid}.il-zoom-button{justify-self:start;min-height:44px}.installation-lab .il-zoom{width:850px;max-width:95vw;color:inherit;background:var(--surface,#fff);border:1px solid #738ba1;border-radius:12px;padding:18px}.il-zoom::backdrop{background:#152b43a8}.installation-lab .il-zoom>button{min-height:44px;margin-bottom:12px}.installation-lab .il-zoom p{margin:8px 0}.installation-lab .il-zoom-scroll{max-height:70vh;overflow:auto}.installation-lab .il-zoom-scroll svg{width:100%;min-width:680px;max-height:none}.installation-lab .il-toggle input[type=checkbox]{appearance:auto;flex:0 0 21px;width:21px;min-width:21px;height:21px;min-height:21px;margin:0;padding:0;display:inline-block}.installation-lab .il-slider input[type=range]{background:0 0;border:0;min-height:44px;margin:0;padding:0}.installation-lab .il-result{background:#438fcd12;border:1px solid #9ab7cf;border-radius:12px;gap:8px;padding:16px;display:grid}.il-result>strong{font-size:1.08rem}.il-result>div{gap:8px;display:grid}.installation-lab .il-equation{font-variant-numeric:tabular-nums;font-size:1.04rem;font-weight:650;line-height:1.7}.installation-lab .il-note,.installation-lab .il-boundary{background:#bf8c3917;border-radius:8px;padding:12px 14px;font-size:.94rem;line-height:1.55}.installation-lab .il-boundary{background:0 0;border-top:1px solid #bec7cd;border-radius:0;padding:13px 0 0;font-size:.86rem}.il-try{font-weight:650}.il-reset{justify-self:start;min-height:44px}.il-bars{border:1px solid #b8c7d7;border-radius:12px;gap:14px;padding:16px;display:grid}.il-bar-row{grid-template-columns:minmax(125px,1.2fr) minmax(55px,1fr) auto;align-items:center;gap:10px;font-size:.92rem;display:grid}.il-bar-row>strong{text-align:right;font-variant-numeric:tabular-nums;min-width:65px}.il-bar-track{background:#9aa6b633;border-radius:4px;height:18px;overflow:hidden}.il-bar{border-radius:4px;height:100%;display:block}.il-blue{background:#2472b7}.il-amber{background:#ad7221}.il-ink{background:#536476}.il-demand-list{border:1px solid #b8c7d7;border-radius:12px;padding:8px 16px}.il-demand-list>div{border-bottom:1px solid #bcc8d340;justify-content:space-between;gap:18px;padding:10px 0;display:flex}.il-demand-list>div:last-child{border:0}.il-demand-list strong{white-space:nowrap;font-variant-numeric:tabular-nums}.il-schedule{border:1px solid #b8c7d7;border-radius:12px;padding:15px}.il-schedule dl{gap:10px;margin:12px 0 0;display:grid}.il-schedule dl>div{grid-template-columns:1fr 2fr;gap:12px;display:grid}.il-schedule dt{font-weight:650}.il-schedule dd{margin:0}.il-protection-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.il-protection-grid>div{border:1px solid #aebbc7;border-radius:10px;padding:13px}.il-protection-grid p{margin-top:7px;font-size:.91rem}.il-protection-grid .il-emphasis{background:#d48e331a;border:2px solid #a45819}@media (width<=600px){.il-protection-grid{grid-template-columns:1fr}.il-bar-row{grid-template-columns:minmax(110px,1.2fr) minmax(45px,1fr) auto;gap:7px;font-size:.86rem}.il-bars{padding:12px}.il-choices>div{gap:6px}.installation-lab .il-choices button{flex:auto}.il-schedule dl>div{grid-template-columns:1fr}.il-schedule dd{padding-left:8px}.il-slider>span{font-size:.95rem}.il-diagram text{font-size:18px}}@media (prefers-reduced-motion:reduce){.installation-lab *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.installation-lab .il-diagram,.lesson-lab .installation-lab .il-diagram{--il-ink:#edf5ff;--il-paper:#102d50;color:#edf5ff;overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#bbcee2 #102d50;background:#102d50;border-color:#52718e;overflow-x:auto}.installation-lab .il-diagram svg{min-width:420px;max-height:none;padding:4px 0}.installation-lab .il-diagram text{fill:#edf5ff;paint-order:stroke;stroke:#102d50;stroke-width:.8px;stroke-linejoin:round;font-weight:600}.installation-lab .il-diagram .il-outline{stroke:#bbcee2;stroke-width:3px}.installation-lab .il-diagram .il-wire{stroke:#d9e5f1;stroke-width:5px}.installation-lab .il-diagram .il-selected-wire{stroke:#ffd253;stroke-width:7px}.installation-lab .il-diagram .il-muted-wire{stroke:#8da8bf;stroke-width:3px;stroke-dasharray:6 5}.installation-lab .il-diagram .il-fault-wire{stroke:#ff9a82;stroke-width:5px}.installation-lab .il-diagram .il-probe{stroke:#e4a1cd;stroke-width:4px}.installation-lab .il-diagram .il-mask{stroke:#102d50}.installation-lab .il-diagram .il-device,.installation-lab .il-diagram .il-label-bg{fill:#173b60;stroke:#bbcee2;stroke-width:2.5px}.installation-lab .il-diagram .il-highlight{fill:#205b7d;stroke:#ffd253;stroke-width:3px}.installation-lab .il-diagram .il-meter{fill:#324d62;stroke:#ffd253;stroke-width:3px}.installation-lab .il-diagram .il-clamp{stroke:#ffd253}.installation-lab .il-diagram .il-cable{stroke:#60768c}.installation-lab .il-diagram .il-core{stroke:#d58b4c}.installation-lab .il-diagram .il-copper{fill:#d58b4c;stroke:#f3bd88}.installation-lab .il-diagram .il-resistor{fill:#845835;stroke:#f3bd88}.installation-lab .il-diagram .il-conduit{fill:#425d76;stroke:#b4c9dd}.installation-lab .il-diagram .il-surface,.installation-lab .il-diagram .il-interior{fill:#102d50;stroke:#8da8bf}.installation-lab .il-diagram .il-water{fill:#153e64;stroke:#82bcdf}.installation-lab .il-diagram .il-drop{fill:#82bcdf}.installation-lab .il-diagram .il-node{fill:#edf5ff}.installation-lab .il-diagram .il-dimension{stroke:#bbcee2;stroke-width:2px}.installation-lab .il-diagram .il-heat{fill:#ffd253}.installation-lab .il-diagram .il-insulation-cutaway{stroke:#d9e5f1;stroke-width:20px;fill:none}.installation-lab .il-diagram .il-copper-sheen{stroke:#ffd4ac;stroke-width:2px;fill:none}.installation-lab .il-diagram .il-cutaway-window{fill:#60472f;stroke:#d58b4c;stroke-width:1.5px}.installation-lab .il-equipment-tap{cursor:pointer;touch-action:manipulation;outline:none}.installation-lab .il-equipment-hit{fill:#ffd25305;stroke:#ffd25385;stroke-width:1.5px;stroke-dasharray:5 4}.installation-lab .il-equipment-tap:hover .il-equipment-hit,.installation-lab .il-equipment-tap:focus-visible .il-equipment-hit{fill:#ffd25313;stroke:#ffd253;stroke-width:3px;stroke-dasharray:none}.installation-lab .il-touch-hint{color:var(--muted,#526375);font-size:.9rem;line-height:1.6}.installation-lab .il-figure{container:installation-figure/inline-size}.installation-lab .il-portrait-diagram{display:none;overflow:hidden}.installation-lab .il-portrait-diagram svg{width:100%;min-width:0;max-height:none}.installation-lab .il-portrait-diagram text{font-size:20px}.installation-lab .il-portrait-diagram .il-short-label{font-size:18px}@container installation-figure (width<=520px){.installation-lab .il-wide-diagram{display:none}.installation-lab .il-portrait-diagram{display:block}}@media (width<=600px){.installation-lab .il-wide-diagram{display:none}.installation-lab .il-portrait-diagram{display:block}.installation-lab .il-slider>span{flex-wrap:wrap;gap:4px 12px}.installation-lab .il-bar-row{grid-template-columns:minmax(0,1fr) auto}.installation-lab .il-bar-row>span{grid-column:1/-1}}.foundation-lab-shell{--fl-ink:#edf5ff;--fl-muted:#bbcee2;--fl-accent:#ffd253;--fl-line:#527290;--fl-paper:#102d50;--fl-danger:#ffad91;max-width:100%;color:var(--fl-ink);overflow-wrap:anywhere;background:#102d50;border:1px solid #527290;border-radius:12px;padding:16px;font-size:1rem;line-height:1.6}.foundation-lab,.foundation-lab-shell>.fl-reset{--fl-ink:#edf5ff;--fl-muted:#bbcee2;--fl-accent:#ffd253;--fl-line:#527290;--fl-paper:#102d50;--fl-danger:#ffad91;color:var(--fl-ink)}.foundation-lab *{box-sizing:border-box}.foundation-lab h3,.foundation-lab h4{color:var(--fl-ink);margin:0 0 8px;line-height:1.35}.foundation-lab h3{font-size:1.1rem}.foundation-lab p{margin:8px 0 16px}.fl-header{margin-bottom:14px}.fl-header p{color:var(--fl-muted);max-width:70ch}.fl-document small,.fl-book small,.fl-nameplate small{letter-spacing:.08em;color:var(--fl-accent);font-size:.72rem;font-weight:800}.foundation-lab button,.fl-reset{cursor:pointer;touch-action:manipulation;min-height:44px;color:var(--fl-ink);line-height:1.35;font:inherit;text-align:left;background:#1b3b60;border:1px solid #7295b4;border-radius:8px;padding:9px 13px;font-weight:650}.foundation-lab button:hover,.fl-reset:hover{background:#244b75}.foundation-lab button[aria-pressed=true],.foundation-lab button[aria-current=step]{background:#284b6a;border-color:#ffd253;box-shadow:inset 0 0 0 1px #ffd253}.foundation-lab :focus-visible,.fl-reset:focus-visible{outline-offset:3px;outline:3px solid #ffd253}.foundation-lab input{accent-color:#ffd253}.fl-choices{border:0;min-width:0;margin:16px 0;padding:0}.fl-choices legend,.fl-check-list legend{margin-bottom:8px;font-weight:750}.fl-choices>div{flex-wrap:wrap;gap:8px;display:flex}.fl-choices button{flex:140px}.fl-slider{margin:16px 0}.fl-slider label{justify-content:space-between;gap:12px;font-weight:650;display:flex}.fl-slider strong{white-space:nowrap;color:var(--fl-accent)}.fl-slider input[type=range]{cursor:pointer;width:100%;height:44px;margin:0;display:block}.fl-range-ends{color:var(--fl-muted);justify-content:space-between;font-size:.78rem;display:flex}.fl-check{cursor:pointer;align-items:flex-start;gap:10px;min-height:44px;padding:9px 0;font-weight:600;display:flex}.fl-check input{flex:0 0 22px;width:22px;height:22px;margin-top:3px}.fl-check-list{border:1px solid var(--fl-line);border-radius:10px;margin:15px 0;padding:10px 16px}.fl-check:has(input:disabled){color:#b6c5d4}.fl-diagram-view{margin:16px 0}.fl-diagram-scroll{overscroll-behavior-x:contain;scrollbar-width:thin;scrollbar-color:#7295b4 #102d50;border-radius:12px;max-width:100%;overflow-x:auto}.fl-diagram{background:#102d50;border:1px solid #527290;border-radius:12px;width:100%;max-width:700px;height:auto;margin:0 auto;display:block;overflow:visible}.foundation-lab .fl-diagram text{fill:var(--fl-ink);font-family:inherit;font-size:16px}.foundation-lab .fl-svg-emphasis{fill:#ffd253;font-weight:800}.foundation-lab .fl-svg-warning{fill:#ffad91;font-weight:800}.foundation-lab .fl-wire{stroke:#d9e5f1;stroke-width:3.5px;fill:none;stroke-linejoin:round;stroke-linecap:round}.foundation-lab .fl-wire text{stroke:none}.foundation-lab .fl-fill,.foundation-lab .fl-highlight{fill:#ffd253}.foundation-lab .fl-accent-line{stroke:#ffd253;stroke-width:5px}.foundation-lab .fl-danger-line{stroke:#ffad91;stroke-width:4px}.lesson-lab .foundation-lab .fl-room{fill:#193b61;stroke:#6387a8;stroke-width:2px}.foundation-lab .fl-case{fill:#294c6d;stroke:#b9cddd;stroke-width:2.5px}.foundation-lab .fl-metal{fill:#9fadb8;stroke:#dae4eb;stroke-width:2px}.foundation-lab .fl-copper{fill:none;stroke:#d58b4c;stroke-width:5px;stroke-linecap:round;stroke-linejoin:round}.foundation-lab .fl-resistor-body{fill:#d9af7e;stroke:#f1d8b8;stroke-width:2px}.foundation-lab .fl-resistor-window{fill:#102d50;stroke:#916841;stroke-width:2px}.foundation-lab .fl-terminal{fill:#6f8696;stroke:#ced9e2;stroke-width:2px}.foundation-lab .fl-meter{fill:#08213d;stroke:#6387a8;stroke-width:2px}.foundation-lab .fl-neutral{stroke:#fff;stroke-width:7px;fill:none}.foundation-lab .fl-contact-closed{stroke:#ffd253;stroke-width:5px}.foundation-lab .fl-contact-open{stroke:#d58b4c;stroke-width:5px}.foundation-lab .fl-route-line{fill:none;stroke:#94b7d8;stroke-width:3px;stroke-dasharray:12 8}.foundation-lab .fl-cable{fill:none;stroke:#d58b4c;stroke-width:8px}.foundation-lab .fl-barrier{fill:none;stroke:#ffd253;stroke-width:7px}.foundation-lab .fl-sign{fill:#ffd253;stroke:#071d33;stroke-width:3px}.foundation-lab .fl-sign+text{fill:#102d50;font-weight:900}.foundation-lab .fl-lanyard{fill:none;stroke:#ffd253;stroke-width:6px}.foundation-lab .fl-edge{fill:none;stroke:#ffad91;stroke-width:2px;stroke-dasharray:5 5}.fl-part{cursor:pointer;touch-action:manipulation;outline:none}.foundation-lab .fl-hit{fill:#0000;stroke:#9eb9d0;stroke-width:1px;stroke-dasharray:4 5;pointer-events:all}.foundation-lab .fl-part:hover .fl-hit,.foundation-lab .fl-part:focus-visible .fl-hit{fill:#ffd25315;stroke:#ffd253;stroke-width:2px;stroke-dasharray:5 4}.fl-scroll-hint{color:var(--fl-muted);font-size:.8rem;display:none}.fl-portrait-diagram{display:none}.fl-result{background:#173c60;border-left:4px solid #ffd253;border-radius:0 10px 10px 0;margin:18px 0;padding:16px 18px}.fl-result p:last-child{margin-bottom:0}.fl-equation{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.97rem;line-height:1.8}.fl-warning{color:#ffe3d3;background:#462f32;border-left:4px solid #ffad91;border-radius:0 8px 8px 0;padding:14px}.fl-reset{margin-top:18px}.fl-caption,.fl-limits{color:var(--fl-muted);font-size:.86rem}.fl-caption{text-align:center}.fl-limits summary{cursor:pointer;min-height:44px;color:var(--fl-ink);padding:9px 0;font-weight:700}.fl-action{margin:4px 0 10px!important}.fl-equivalence{text-align:center;background:#183c61;border-radius:12px;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;padding:18px;display:grid}.fl-equivalence strong{white-space:nowrap;font-size:clamp(1.3rem,4vw,2rem);display:block}.fl-equivalence small{color:var(--fl-muted);display:block}.fl-equivalence>span{color:var(--fl-accent);font-weight:800}.fl-hierarchy{flex-direction:column;align-items:center;gap:5px;margin:20px 0;display:flex}.fl-hierarchy button{justify-content:space-between;gap:8px;display:flex}.fl-hierarchy button span{font-size:.78rem;font-weight:500}.fl-milestones{grid-template-columns:repeat(4,1fr);gap:8px;padding:0;list-style:none;display:grid}.fl-milestones li{min-width:0}.fl-milestones button{flex-direction:column;gap:8px;width:100%;height:100%;font-size:.88rem;display:flex}.fl-milestones button span{width:30px;height:30px;color:var(--fl-accent);background:#102d50;border-radius:50%;place-items:center;display:grid}.fl-document{border:1px solid var(--fl-line);background:#183b5d;border-left:7px solid #d58b4c;border-radius:4px 12px 12px 4px;margin:16px 0;padding:22px;position:relative;box-shadow:3px 4px #071d3340}.fl-document-lines{float:right;color:#bbcee2;margin-left:10px;font-size:2.5rem}.fl-document h4{margin-top:8px}.fl-code-route{border:0;grid-template-columns:repeat(4,1fr);gap:8px;margin:20px 0;padding:0;display:grid}.foundation-lab .fl-code-route button{text-align:center;color:var(--fl-ink);padding:12px 6px;display:block;position:relative}.fl-code-route span{color:var(--fl-accent);font-size:1.35rem;display:block}.fl-code-route b{font-size:.88rem;display:block}.fl-code-route i{z-index:1;background:#102d50;font-style:normal;position:absolute;top:35%;right:-13px}.fl-book{background:#183b5d;border:1px solid #6387a8;border-radius:9px;gap:20px;padding:20px;display:flex}.fl-book>span{color:#d58b4c;font-size:4rem;line-height:1.2}.fl-book h4{margin-top:8px}.fl-book p{margin-bottom:0}.fl-whmis{grid-template-columns:1fr 1fr;align-items:center;gap:20px;display:grid}.foundation-lab .fl-bottle{text-align:center;background:0 0;border:0;width:150px;max-width:100%;margin:auto;padding:0}.fl-bottle-cap{background:repeating-linear-gradient(90deg,#90a7ba 0 4px,#506b83 4px 7px);border-radius:8px 8px 0 0;width:75%;height:20px;margin:auto}.fl-bottle-body{text-align:center;background:linear-gradient(90deg,#244868,#365d7c 28%,#1b3b5b);border:3px solid #9ab0c1;border-radius:22px 22px 12px 12px;flex-direction:column;justify-content:center;gap:8px;min-height:165px;padding:14px;display:flex}.fl-bottle-body small{font-size:.6rem}.fl-bottle-body span{font-size:.75rem}.fl-identity>span{color:var(--fl-accent);font-size:2.5rem;line-height:1.4;display:block}.fl-identity p{margin:0}.fl-suitability{grid-template-columns:1.2fr 1fr;align-items:stretch;gap:15px;margin:18px 0;display:grid}.foundation-lab .fl-nameplate{background:#294c6d;border:2px solid #bbcee2;border-radius:10px;flex-direction:column;gap:12px;padding:20px;display:flex}.fl-nameplate span{border-top:1px solid #6b8aa3;padding-top:8px;font-size:.88rem}.fl-location{text-align:center;background:#51483b;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;padding:18px;display:flex}.fl-location-wet{background:#183e66}.fl-location>span{font-size:4rem;line-height:1.3}.fl-inspection{align-items:center;gap:12px;margin:24px 0;display:flex}.fl-inspection span{text-align:center;border:1px solid var(--fl-line);background:#183b5d;border-radius:8px;flex:1;padding:20px 12px}.fl-inspection>b{color:var(--fl-accent)}.fl-lamps{grid-template-columns:1fr 1fr;gap:14px;margin:20px 0;display:grid}.fl-lamp{border:1px solid var(--fl-line);text-align:center;background:#143659;border-radius:12px;min-width:0;padding:16px}.fl-lamp svg{width:100%;max-height:260px;display:block}.fl-lamp svg text{fill:var(--fl-ink);font:16px sans-serif}.fl-lamp strong,.fl-lamp small{display:block}.fl-lamp strong{color:var(--fl-accent);margin-top:8px;font-size:1.25rem}.fl-lamp small{color:var(--fl-muted);font-size:.8rem}.fl-light-halo{fill:#ffd253}.fl-glass{fill:#d4e8ff20;stroke:#dceaff;stroke-width:3px}.fl-filament{fill:none;stroke:#ffd253;stroke-width:4px}.fl-led{fill:#fff1aa;stroke:#d58b4c;stroke-width:2px}.fl-driver{fill:#284b6e;stroke:#d9e5f1;stroke-width:2px}.fl-power-bar{background:#08213d;border-radius:4px;width:100%;height:16px;margin-top:12px;overflow:hidden}.fl-power-bar>span{background:#ffd253;height:100%;transition:width .25s;display:block}@media (width<=600px){.foundation-lab-shell{padding:8px}.foundation-lab .fl-diagram{width:520px;min-width:520px}.foundation-lab .fl-has-portrait .fl-wide-diagram{display:none}.foundation-lab .fl-has-portrait .fl-portrait-diagram{width:100%;min-width:0;display:block}.foundation-lab .fl-portrait-diagram text{font-size:16px}.foundation-lab .fl-portrait-diagram text[font-size="14"]{font-size:14px}.fl-scroll-hint{display:block;margin:5px 0 10px!important}.fl-milestones,.fl-code-route{grid-template-columns:repeat(2,1fr)}.fl-code-route i{display:none}.fl-equivalence{gap:5px;padding:12px 7px}.fl-equivalence>span{font-size:.78rem}.fl-hierarchy button span{display:none}.fl-result{padding:13px}.fl-book{gap:10px;padding:15px}.fl-book>span{font-size:2.5rem}.fl-whmis{grid-template-columns:1fr}.fl-identity{text-align:center}.fl-identity>span{display:none}.fl-identity .fl-check{text-align:left;justify-content:center}.fl-document{padding:16px}.fl-document-lines{display:none}.fl-suitability{grid-template-columns:1fr}.fl-location{flex-direction:row;gap:20px;padding:8px}.fl-location>span{font-size:2rem}.fl-inspection{flex-direction:column}.fl-inspection span{width:100%}.fl-inspection>b{transform:rotate(90deg)}.fl-lamps{gap:8px}.fl-lamp{padding:8px}.fl-lamp strong{font-size:1.1rem}}@media (prefers-reduced-motion:reduce){.foundation-lab-shell *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.lesson-lab{--lab-teal:#086859;--lab-gold:#a35e09;--lab-blue:#235ba9}.lesson-lab h3{margin-top:.35rem}.lesson-lab button,.lesson-lab select{min-height:44px}.lesson-lab input[type=range]{width:100%;min-height:44px;accent-color:var(--accent)}.lesson-lab input[type=checkbox],.lesson-lab input[type=radio]{width:22px;min-width:22px;max-width:22px;height:22px;min-height:22px;max-height:22px;accent-color:var(--accent);flex:0 0 22px;margin:0;padding:0}.lesson-lab button:focus-visible,.lesson-lab input:focus-visible,.lesson-lab select:focus-visible,.lesson-lab summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.lesson-lab figure{margin:1rem 0}.lesson-lab figure figcaption{padding:.5rem 0;line-height:1.6}.lesson-interactive.lesson-lab svg{max-height:none}.lesson-lab fieldset{min-width:0}.lab-boundary{border-left:3px solid var(--border);margin:1.2rem 0 .7rem;padding:.8rem 1rem}.lab-references{border-top:1px solid var(--border);padding-top:.6rem}.lab-references summary{cursor:pointer;align-items:center;min-height:44px;font-weight:650;display:flex}.lab-references li{overflow-wrap:anywhere;margin:.5rem 0}.lesson-lab{margin:24px 0;padding:clamp(12px,3vw,24px);position:relative}.lab-toolbar{flex-wrap:wrap;align-items:flex-start;gap:12px;max-width:none;margin:0 0 16px;padding:0;display:flex}.lab-toolbar>div:first-child{flex:260px}.lab-toolbar h3{margin:.3rem 0 0}.lab-toolbar-actions,.lab-view-picker{flex-wrap:wrap;gap:8px;display:flex}.lab-toolbar-actions{flex:0 auto}.lab-experiment{background:var(--surface);border-left:4px solid var(--accent);border-radius:4px;padding:12px 14px}.lab-view-picker{border-bottom:1px solid var(--border);margin:18px 0;padding-bottom:12px}.lab-view-picker button[aria-pressed=true]{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.lab-model{min-width:0}.lab-quick-check{border:1px solid var(--border-strong);background:var(--surface);border-radius:12px;margin:24px 0 12px;padding:16px}.lab-quick-check legend{padding:0 6px;font-size:.9rem;font-weight:700}.lab-quick-check>div{gap:8px;display:grid}.lab-quick-check button{text-align:left;justify-content:flex-start;width:100%}.lab-quick-check button[aria-pressed=true]{border:2px solid var(--accent);background:var(--surface-soft)}.lab-check-feedback{border-left:3px solid var(--accent);padding:8px 12px}.lesson-lab.lab-expanded{z-index:1000;overscroll-behavior:contain;background:var(--surface);border-radius:0;width:100%;max-width:none;height:100dvh;margin:0;padding:16px max(12px,50vw - 500px);position:fixed;inset:0;overflow:auto}.lab-expanded>.lab-toolbar{z-index:4;background:var(--surface);border-bottom:1px solid var(--border);padding:12px 0;position:sticky;top:-16px}.lesson-lab :is(.ctl-enlarge,.il-zoom-button,.nl-enlarge){display:none}.lab-model :is(.ctl-footer,.fl-reset,.il-reset){margin-top:12px}@media (width<=420px){.lab-toolbar-actions{width:100%}.lab-toolbar-actions button{flex:1}.lab-view-picker button{flex:120px}.lab-quick-check{padding:12px}}@media (width<=600px){.workspace .lesson-reader:has(.lesson-lab){padding-inline:12px}.lesson-reader .lesson-lab:not(.lab-expanded){border-inline:0;border-radius:0;width:calc(100% + 24px);max-width:none;margin-inline:-12px;padding:12px}}:root[data-theme=dark] .lesson-lab{--lab-teal:#83dec5;--lab-gold:#ffd19c;--lab-blue:#a9c8ff}@media (width<=600px){.lesson-lab{overflow-wrap:anywhere}.lesson-lab h3{font-size:1.2rem}}@media (prefers-reduced-motion:reduce){.lesson-lab *,.lesson-lab :before,.lesson-lab :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.lesson-lab{--diagram-paper:#102d50;--diagram-ink:#edf5ff;--diagram-muted:#bbcee2;--diagram-line:#527292;--diagram-wire:#d9e5f1;--diagram-copper:#d58b4c;--diagram-copper-light:#efd2b4;--diagram-current:#ffd253;--diagram-blue:#73b8ff;--diagram-live:#8ce7c3;border-top:4px solid #24598d}.lab-toolbar .eyebrow{color:var(--accent-text);letter-spacing:.12em;font-size:.72rem}.lab-toolbar-actions button{border-radius:8px}.lab-sequence{color:var(--muted);flex-wrap:wrap;gap:8px 18px;margin:0 0 18px;padding:0;font-size:.85rem;list-style:none;display:flex}.lab-sequence li{align-items:center;gap:7px;display:flex}.lab-sequence span{border:1px solid var(--border-strong);width:24px;height:24px;color:var(--text);border-radius:50%;place-items:center;font-size:.75rem;font-weight:750;display:grid}.lab-experiment{border-left-color:var(--diagram-copper);background:var(--surface-soft)}.lab-view-picker{gap:6px}.lab-quick-check legend{letter-spacing:.02em}.lesson-lab :is(.dcl-figure,.aclab-figure,.mcl-figure,.bbl-figure,.ctl-figure,.nl-figure,.il-diagram,.fl-diagram){border-color:var(--diagram-line);background:var(--diagram-paper);border-radius:12px;box-shadow:0 3px #2434420a}.lesson-lab .nl-figure{--text:var(--diagram-ink);--muted:var(--diagram-muted);--surface:#163b62;--surface-soft:#1c446c;--border:#527292;--border-strong:#7196b9;--accent:#8ce7c3;--accent-text:#8ce7c3;--nl-blue:#73b8ff;--nl-gold:#ffd253;color:var(--diagram-ink)}.lesson-lab .nl-figure .numeric-diagram{background:0 0}.lesson-lab .nl-wire{stroke:var(--diagram-wire);stroke-width:3.5px}.lesson-lab .nl-muted-wire{stroke:#8b99a4}.lesson-lab .nl-resistor{fill:var(--diagram-copper-light);stroke:#744823;stroke-width:2.5px}.lesson-lab .nl-resistor-core{fill:none;stroke:#8d5125;stroke-width:2px}.lesson-lab .nl-coil{stroke:var(--diagram-copper);stroke-width:6px}.lesson-lab .nl-conductor{fill:#d99459;stroke:#835027;stroke-width:2px}.lesson-lab .nl-conductor-sheen{stroke:#f5d7b8;stroke-width:3px;fill:none}.lesson-lab .nl-face{fill:#eeb579;fill-opacity:1;stroke:#835027;stroke-width:2.5px}.lesson-lab .nl-core{fill:#a9b5bf;stroke:#4d6170;stroke-width:2px}.lesson-lab .nl-lamination{stroke:#7a8d9c;stroke-width:1px}.lesson-lab .nl-wire.nl-line-one{stroke:#101923;stroke-width:6px;filter:drop-shadow(0 0 1px #fff)}.lesson-lab .nl-wire.nl-line-two{stroke:#ff7373}.lesson-lab .nl-neutral-base{fill:none;stroke:#647584;stroke-width:8px;stroke-linecap:round;stroke-linejoin:round}.lesson-lab .nl-wire.nl-neutral{stroke:#fff;stroke-width:4px}.lesson-lab .nl-batteries .nl-cell{background:#21486c;border-color:#7798b4;border-top-style:solid;border-top-width:9px;box-shadow:inset 0 -8px #173b5c}.lesson-lab .nl-cell-polarity{color:#edf5ff;font-weight:850}.lesson-lab .nl-pv .nl-cell{color:#f6f9fc;background-color:#284d74;border-color:#879bad}.lesson-lab .nl-pv .nl-cell strong,.lesson-lab .nl-pv .nl-cell>span:not(.nl-cell-polarity){color:#edf5ff}.lesson-lab .installation-lab{--il-blue:#24598d}.lesson-lab .il-outline{stroke:#b7cbdd;stroke-width:3px}.lesson-lab .il-wire{stroke:var(--diagram-wire);stroke-width:5px}.lesson-lab .il-selected-wire{stroke:#73b8ff;stroke-width:7px}.lesson-lab .il-device{fill:#21486c;stroke:#a4bfd7;stroke-width:2.5px}.lesson-lab .il-resistor{fill:var(--diagram-copper-light);stroke:#835027}.lesson-lab .il-core{stroke:var(--diagram-copper)}.lesson-lab .il-copper{fill:#d99459;stroke:#835027}.lesson-lab .il-conduit{fill:#ccd6de;stroke:#647786}.lesson-lab .il-mask{stroke:var(--diagram-paper)}.lesson-lab .il-surface,.lesson-lab .il-interior{fill:var(--diagram-paper)}.lesson-lab .il-meter{fill:#684e1c;stroke:#ffd253}.lesson-lab .il-insulation-cutaway{stroke:#e8edf2;stroke-width:20px;fill:none}.lesson-lab .il-copper-sheen{stroke:#f5d7b8;stroke-width:2px;fill:none}.lesson-lab .il-cutaway-window{fill:#efd2b4;stroke:#99724f;stroke-width:1.5px}.lesson-lab .fl-diagram{--fl-ink:var(--diagram-ink);--fl-muted:var(--diagram-muted);--fl-paper:var(--diagram-paper);--fl-line:var(--diagram-line);--fl-accent:#8ce7c3}.lesson-lab .fl-wire{stroke-width:3.5px}.lesson-lab .fl-room{fill:#21486c;stroke:#a5bfd5}.lesson-lab :is(.fl-document,.fl-nameplate,.fl-bottle-body,.fl-lamp){border-color:var(--diagram-line);box-shadow:0 3px #2434420a}@media (width<=420px){.lab-sequence{gap:8px 12px;font-size:.78rem}.lab-sequence span{width:22px;height:22px}}.lab-episode{border:1px solid var(--border-strong);border-radius:12px;margin:16px 0;padding:14px}.lab-playback,.lab-zoom-controls{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.lab-playback button{flex:130px}.lab-scene-picker{gap:8px;margin:14px 0;display:flex}.lab-scene-picker button{border-radius:50%;min-width:44px}.lab-scene-picker button[aria-current=step]{background:var(--accent);color:var(--on-accent)}.lab-scene-caption h4,.lab-scene-caption p{margin:.5rem 0}.lab-zoom-controls{margin:16px 0}.lab-zoom-controls output{text-align:center;font-variant-numeric:tabular-nums;min-width:48px}.lab-model-viewport{overscroll-behavior:contain;max-width:100%;overflow:auto}.lab-model[data-motion=paused] :is(.dcl-flow,.mcl-current-flow){animation-play-state:paused}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f4f6f5;--surface:#fff;--surface-soft:#edf3f0;--text:#1c302e;--muted:#526863;--border:#d9e3df;--border-strong:#95aca3;--accent:#155b49;--accent-hover:#104636;--accent-text:#155b49;--on-accent:#fff;--hover:#e5f1eb;--focus:#a05f00;--warning-bg:#fff4db;--warning:#a36500;--error-bg:#ffe9e5;--error:#b44333;--skills:#2967a7;--code:#8256a3;--theory:#a06219;--systems:#23775b;--shadow:0 3px 18px #172f2610}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0d171b;--surface:#15242a;--surface-soft:#1a2e32;--text:#e4f0eb;--muted:#a3b9b6;--border:#2b4246;--border-strong:#65817f;--accent:#a2e2c5;--accent-hover:#c5f0dc;--accent-text:#a2e2c5;--on-accent:#102c23;--hover:#203d3a;--focus:#ffc979;--warning-bg:#3a301b;--warning:#e4b75c;--error-bg:#3d2428;--error:#f39789;--skills:#91bcf3;--code:#c5a6ee;--theory:#edbf78;--systems:#90d8b7;--shadow:0 3px 18px #00000018}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#0d171b;--surface:#15242a;--surface-soft:#1a2e32;--text:#e4f0eb;--muted:#a3b9b6;--border:#2b4246;--border-strong:#65817f;--accent:#a2e2c5;--accent-hover:#c5f0dc;--accent-text:#a2e2c5;--on-accent:#102c23;--hover:#203d3a;--focus:#ffc979;--warning-bg:#3a301b;--warning:#e4b75c;--error-bg:#3d2428;--error:#f39789;--skills:#91bcf3;--code:#c5a6ee;--theory:#edbf78;--systems:#90d8b7;--shadow:0 3px 18px #00000018}}:root{color:var(--text);background:var(--bg);font-synthesis:none;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;font-size:16px;line-height:1.6}*{box-sizing:border-box}body{margin:0}header,main,footer,nav{max-width:1120px;margin:auto}header{justify-content:space-between;gap:24px;padding:28px 24px 18px;display:flex}h1{margin:6px 0;font-size:1.65rem;line-height:1.2}h2{margin:12px 0 18px;font-size:1.65rem;line-height:1.3}h3{margin:6px 0 12px;font-size:1.12rem;line-height:1.4}p{margin:12px 0}header p{color:var(--muted);margin:10px 0 0}.eyebrow{text-transform:uppercase;letter-spacing:.07em;color:var(--accent-text);font-size:.75rem;font-weight:750;display:block}.edition{color:var(--muted);white-space:nowrap;padding-top:12px;font-size:.78rem}nav{border-bottom:1px solid var(--border);flex-wrap:wrap;gap:6px;padding:0 24px 20px;display:flex}button,input,select{font:inherit}button,.button{border:1px solid var(--border-strong);background:var(--surface);min-height:44px;color:var(--accent-text);cursor:pointer;text-align:left;border-radius:7px;justify-content:center;align-items:center;max-width:100%;padding:9px 15px;font-weight:600;line-height:1.35;text-decoration:none;display:inline-flex}button:hover,.button:hover{background:var(--hover)}button:disabled{cursor:not-allowed;opacity:.48}button[aria-current],.primary{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}.primary:hover{background:var(--accent-hover)}.text{color:var(--accent-text);background:0 0;border:none;min-height:44px;padding:4px 6px;text-decoration:underline}a{color:var(--accent-text);text-underline-offset:3px;overflow-wrap:anywhere}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}main{outline:none;min-height:60vh;padding:28px 24px}section,article{background:var(--surface);border:1px solid var(--border);border-radius:10px;min-width:0;margin:0 0 20px;padding:24px}article{max-width:850px;margin:auto}article>button:first-child{margin-bottom:16px}article .eyebrow{margin-top:20px}article p{max-width:75ch}article section{background:var(--surface-soft)}article section h3{margin-top:0}.hero{border-left:5px solid var(--accent);background:var(--surface-soft)}.row{flex-wrap:wrap;align-items:end;gap:12px;margin:12px 0;display:flex}.row>label{flex:1;min-width:140px}.row>button{flex-shrink:0}label{margin:10px 0;font-size:.94rem;font-weight:550;display:block}input:not([type=radio]),select{border:1px solid var(--border-strong);min-height:44px;color:var(--text);background:var(--surface);border-radius:5px;width:100%;min-width:0;margin-top:5px;padding:9px;display:block}input[type=file]{max-width:100%;font-size:.85rem}.search{margin:26px 0 18px}.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.lesson-card{flex-direction:column;justify-content:start;align-items:start;gap:10px;padding:20px;font-weight:400;display:flex}.lesson-card strong{font-size:1.03rem;line-height:1.4}.lesson-card span:not(.eyebrow){color:var(--muted);font-size:.8rem}.two{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.two section{margin-bottom:10px}.worked{background:var(--surface-soft);border-left:4px solid var(--accent);padding:18px}.notice{background:var(--warning-bg);border-left:4px solid var(--warning);padding:14px 18px}.error{background:var(--error-bg);border-left:4px solid var(--error);margin-bottom:20px;padding:16px}.error button{margin-left:12px}.small,figcaption,.refs{color:var(--muted);font-size:.83rem}.refs{overflow-wrap:anywhere;padding-left:20px}.refs li{margin:10px 0}li{margin:8px 0}details{border-top:1px solid var(--border);margin:16px 0;padding:14px 0}summary{cursor:pointer;overflow-wrap:anywhere;min-height:44px;font-weight:650}fieldset{border:0;min-width:0;margin:12px 0 20px;padding:0}legend{float:left;width:100%;margin-bottom:12px;font-size:1.12rem;font-weight:650;line-height:1.6}legend+*{clear:both}.option{border:1px solid var(--border-strong);cursor:pointer;border-radius:7px;align-items:center;gap:14px;min-height:50px;padding:13px 15px;font-weight:400;display:flex}.option:has(input:checked){background:var(--hover);border-color:var(--accent)}.option input{width:20px;height:20px;accent-color:var(--accent);flex-shrink:0}.exam-bar{background:var(--accent-text);color:var(--on-accent);z-index:2;border-radius:8px;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:16px;display:flex;position:sticky;top:0}.question-nav{grid-template-columns:repeat(auto-fill,minmax(55px,1fr));gap:8px;display:grid}.question-nav button{justify-content:center;padding:8px}figure{margin:24px 0}figure img{width:100%;height:auto;max-height:360px;display:block}figcaption{padding-top:8px}.plan{background:var(--surface);border-radius:10px;padding:24px 24px 24px 48px}.log{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--surface-soft);max-height:480px;padding:16px;font:.83rem/1.6 ui-monospace,monospace;overflow:auto}.danger{border-color:var(--error)}.skip{z-index:99;background:var(--surface);padding:15px;position:absolute;top:-100px;left:12px}.skip:focus{top:10px}footer{border-top:1px solid var(--border);color:var(--muted);padding:24px;font-size:.8rem}.modal{z-index:20;background:#152923d9;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal>div{background:var(--surface);border-radius:8px;width:min(100%,1000px);max-height:95vh;padding:24px;overflow:auto}.modal iframe{border:1px solid var(--border);width:100%;height:55vh;margin-top:14px}.pdf-page{background:var(--surface-soft);border-radius:8px;width:100%;min-width:0;margin:1rem 0;padding:.75rem}.pdf-page canvas{background:#fff;max-width:100%;display:block}.pdf-page canvas[hidden]{display:none}.pdf-page-text{white-space:pre-wrap;overflow-wrap:anywhere}.source-page-controls{flex-wrap:wrap}.source-library li{overflow-wrap:anywhere;margin:.75rem 0}code{overflow-wrap:anywhere}@media (width<=760px){.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.two{grid-template-columns:1fr}.edition{display:none}header,main,footer{padding:20px 16px}nav{padding:0 16px 16px}section,article{padding:19px}h1{font-size:1.45rem}h2{font-size:1.5rem}.row{align-items:stretch}.row>button{flex-shrink:1}}@media (width<=480px){.lesson-grid{grid-template-columns:1fr}nav{grid-template-columns:repeat(3,1fr);gap:5px;display:grid}nav button{text-align:center;justify-content:center;padding:9px 6px;font-size:.79rem}.row>label{min-width:100%}.row>.button{width:100%}section,article{padding:16px}.modal{padding:8px}.modal>div{padding:16px}}@media print{header,nav,footer,button,.modal{display:none}main{max-width:100%;padding:0}section,article{border:none}body{background:var(--surface)}}html{scroll-padding-top:140px}body{min-width:280px}button,a,input,select{touch-action:manipulation}button{gap:8px}.icon{vertical-align:middle;flex-shrink:0;width:20px;height:20px}header,main,footer,nav{max-width:1240px}.app-header{align-items:center;gap:16px;padding:24px 28px 18px}.brand{color:var(--text);text-align:left;background:0 0;border:0;justify-content:flex-start;gap:13px;padding:0}.brand:hover{background:0 0}.brand h1{letter-spacing:-.035em;margin:3px 0 0;font-size:1.18rem}.brand .eyebrow{letter-spacing:.16em;font-size:.75rem}.brand-mark{background:var(--accent);width:43px;height:47px;color:var(--on-accent);border-radius:12px;place-items:center;display:grid}.brand-mark .icon{width:25px;height:25px}.theme-toggle{background:var(--surface);border-color:var(--border);border-radius:12px;flex-shrink:0;padding:10px 13px;font-size:.8rem}nav{border-bottom:1px solid var(--border);gap:5px;padding:0 28px 18px}nav button{color:var(--muted);background:0 0;border:0;border-radius:9px;padding:11px 15px;font-size:.86rem}nav .icon{width:17px;height:17px}nav button[aria-current]{background:var(--accent);color:var(--on-accent)}main{padding:28px}.page-heading h2{letter-spacing:-.035em}.page-heading p{color:var(--muted)}.dashboard section{margin:0;padding:24px}.dashboard-heading{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:26px;display:flex}.dashboard-heading h2{letter-spacing:-.045em;margin:7px 0 8px;font-size:1.85rem;line-height:1.18}.dashboard-heading p{color:var(--muted);max-width:62ch;margin:0;font-size:.92rem}.dashboard .eyebrow{letter-spacing:.12em;font-size:.75rem}.offline-chip{white-space:nowrap;background:var(--surface);color:var(--muted);border:1px solid var(--border);border-radius:99px;align-items:center;gap:7px;margin-top:6px;padding:7px 12px;font-size:.75rem;display:inline-flex}.status-dot{background:var(--warning);border-radius:50%;flex-shrink:0;width:6px;height:6px}.is-ready .status-dot{background:var(--accent-text)}.dashboard-top{grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:20px;margin-bottom:20px;display:grid}.dashboard .next-session{color:#edf9f2;box-shadow:var(--shadow);background:radial-gradient(at 100% 0,#245c504a,#0000 70%),#123c36;border:1px solid #2d675b;padding:27px 28px 20px}.card-kicker{justify-content:space-between;align-items:center;gap:12px;font-size:.75rem;display:flex}.card-kicker>span:first-child{color:#b3d8c9;align-items:center;gap:8px;display:flex}.card-kicker .icon{width:16px;height:16px}.next-kind{white-space:nowrap;color:#c5e7d5;border:1px solid #5b8a7b;border-radius:99px;padding:4px 9px;font-size:.75rem}.next-session h3{letter-spacing:-.035em;max-width:32ch;margin:20px 0 12px;font-size:1.65rem;line-height:1.22}.next-reason{color:#c1dcd0;max-width:62ch;margin:0 0 20px;font-size:.9rem;line-height:1.55}.session-choice{gap:8px;margin:0 0 16px;display:flex}.session-choice button{color:#dbf1e6;background:#1a4a42;border:1px solid #4e7f6d;border-radius:8px;min-height:46px;padding:9px 18px;font-size:.76rem}.session-choice strong{font-size:1rem}.session-choice button[aria-pressed=true]{color:#164737;background:#ebf8f0;border-color:#ebf8f0}.session-choice button:hover{background:#2a6355}.session-choice button[aria-pressed=true]:hover{background:#dbefe2}.next-session .session-start{color:#123b29;background:#bdeccc;border:1px solid #bdeccc;border-radius:9px;justify-content:space-between;width:100%;min-height:52px;padding:14px 18px;font-size:.9rem}.next-session .session-start:hover{background:#d4f6de}.next-session :focus-visible{outline-color:#ffc979}.session-path{border-top:1px solid #3c6e60;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0 0;padding:20px 0 0;list-style:none;display:grid}.session-path li{align-items:flex-start;gap:8px;margin:0;display:flex;position:relative}.session-path li>span{color:#c1e9d3;background:#285b4e;border-radius:50%;flex-shrink:0;place-items:center;width:20px;height:20px;margin-top:2px;font-size:.75rem;display:grid}.session-path strong{font-size:.75rem;font-weight:600;line-height:1.5;display:block}.session-path small{color:#b8d4c4;margin-top:3px;font-size:.75rem;line-height:1.5;display:block}.session-note{color:#b8d4c4;margin:14px 0 0;font-size:.75rem}.section-heading{justify-content:space-between;align-items:center;gap:14px;margin-bottom:12px;display:flex}.section-heading h3{letter-spacing:-.025em;margin:0;font-size:1rem}.section-heading>.icon{color:var(--muted)}.section-heading .text{flex-shrink:0;font-size:.75rem;text-decoration:none}.section-heading .eyebrow{margin-bottom:4px}.progress-card{box-shadow:var(--shadow);flex-direction:column;display:flex}.progress-overview{text-align:center;flex:1}.progress-overview p{color:var(--muted);margin:12px 0 17px;font-size:.78rem;line-height:1.5}.progress-ring{width:156px;height:156px;margin:12px auto 0;position:relative}.progress-ring svg{fill:none;stroke-width:5px;width:100%;height:100%}.ring-track{stroke:var(--border)}.ring-value{stroke:var(--accent)}.progress-ring>div{flex-direction:column;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.progress-ring strong{letter-spacing:-.05em;font-size:2.1rem;font-weight:650;line-height:1.2}.progress-ring strong span{letter-spacing:-.02em;color:var(--muted);font-size:1rem;font-weight:400}.progress-ring small{color:var(--muted);margin-top:6px;font-size:.75rem}.evidence-counts{border-block:1px solid var(--border);grid-template-columns:1fr 1fr;gap:12px;margin:0;padding:15px 0;display:grid}.evidence-counts>div+div{border-left:1px solid var(--border);padding-left:16px}.evidence-counts dt{color:var(--muted);font-size:.75rem;line-height:1.5}.evidence-counts dd{letter-spacing:-.025em;margin:2px 0 0;font-size:1.35rem;font-weight:650}.evidence-counts dd span{color:var(--muted);font-size:.8rem;font-weight:400}.subtle-link{color:var(--accent-text);background:0 0;border:0;justify-content:space-between;min-height:44px;padding:14px 0 0;font-size:.75rem}.subtle-link:hover{background:0 0;text-decoration:underline}.dashboard .diagnostic-banner{background:var(--surface-soft);align-items:center;gap:16px;margin:0 0 20px;padding:16px 20px;display:flex}.tile-icon{background:var(--surface-soft);border:1px solid var(--border);width:38px;height:38px;color:var(--accent-text);border-radius:10px;flex-shrink:0;place-items:center;display:grid}.diagnostic-banner>div:first-of-type{flex:1}.diagnostic-banner h3{margin:0 0 3px;font-size:.84rem}.diagnostic-banner p{color:var(--muted);margin:0;font-size:.75rem;line-height:1.6}.diagnostic-actions{flex-shrink:0;align-items:center;gap:10px;display:flex}.diagnostic-actions button{padding:9px 12px;font-size:.75rem}.diagnostic-actions .text{padding-inline:4px;text-decoration:none}.dashboard-middle{grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:20px;margin-bottom:20px;display:grid}.queue-item{border:0;border-bottom:1px solid var(--border);text-align:left;width:100%;color:var(--text);background:0 0;border-radius:0;justify-content:space-between;align-items:center;gap:14px;padding:14px 0;display:flex}.queue-item:last-of-type{border-bottom:0}.queue-item:hover{background:var(--surface-soft)}.queue-number{font-variant-numeric:tabular-nums;color:var(--muted);align-self:flex-start;padding-top:3px;font-size:.75rem}.queue-copy{flex:1;min-width:0}.queue-copy strong{font-size:.81rem;font-weight:600;display:block}.queue-copy small{color:var(--muted);margin-top:4px;font-size:.75rem;font-weight:400;display:block}.queue-item>.icon{width:16px;height:16px;color:var(--muted)}.queue-note{margin:13px 0 0;font-size:.75rem}.muted{color:var(--muted)}.review-card>p{margin:0 0 16px;font-size:.76rem}.review-item{border:0;border-top:1px solid var(--border);text-align:left;width:100%;color:var(--text);background:0 0;border-radius:0;align-items:center;gap:12px;padding:16px 0;display:flex}.review-count{background:var(--surface-soft);border-radius:9px;place-items:center;min-width:39px;height:42px;font-size:1.3rem;font-weight:600;display:grid}.review-item>span:nth-child(2){flex:1;min-width:0}.review-item strong{font-size:.76rem;font-weight:600;display:block}.review-item small{color:var(--muted);margin-top:4px;font-size:.75rem;font-weight:400;line-height:1.5;display:block}.review-item>.icon{width:16px;height:16px;color:var(--muted)}.review-card>.text{padding-inline:0;font-size:.75rem}.dashboard .category-section{margin-bottom:20px}.category-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:18px;display:grid}.category-card{text-align:left;background:var(--surface);color:var(--text);border-color:var(--border);border-radius:11px;padding:17px 16px;display:block}.category-card:hover{background:var(--surface-soft)}.category-skills{--category-colour:var(--skills)}.category-code{--category-colour:var(--code)}.category-theory{--category-colour:var(--theory)}.category-systems{--category-colour:var(--systems)}.category-top{justify-content:space-between;align-items:center;gap:8px;margin-bottom:15px;display:flex}.category-top>span:last-child{color:var(--muted);font-size:.75rem;font-weight:400}.category-icon{color:var(--category-colour)}.category-card>strong{font-size:.78rem;font-weight:600;display:block}.category-score{justify-content:space-between;align-items:center;gap:8px;margin-top:12px;display:flex}.category-score b{letter-spacing:-.025em;font-size:1rem;font-weight:600}.category-score .icon{width:15px;height:15px;color:var(--muted)}.score-track{background:var(--border);border-radius:3px;height:5px;margin:13px 0;overflow:hidden}.score-track span{background:var(--category-colour);border-radius:3px;height:100%;display:block}.score-track.is-unknown{background:repeating-linear-gradient(90deg,var(--border),var(--border) 5px,transparent 5px,transparent 8px)}.category-card small{color:var(--muted);font-size:.75rem;font-weight:400;line-height:1.5;display:block}.category-section>p{max-width:100ch;margin:16px 0 0;font-size:.75rem}.quick-tools{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.quick-tools button{text-align:left;background:var(--surface);color:var(--text);border-color:var(--border);border-radius:12px;justify-content:start;gap:12px;padding:16px}.quick-tools button>span:nth-child(2){flex:1}.quick-tools strong{font-size:.75rem;font-weight:600;display:block}.quick-tools small{color:var(--muted);margin-top:4px;font-size:.75rem;font-weight:400;line-height:1.5;display:block}.quick-tools button>.icon{width:16px;height:16px;color:var(--muted)}.quick-tools button:hover{background:var(--surface-soft)}.lesson-card{border-color:var(--border);color:var(--text)}.lesson-card:hover{border-color:var(--accent)}.lesson-grid{gap:14px}.search input{background:var(--surface)}figure img{background:#fff;border-radius:10px;padding:8px}article .row button{flex-wrap:wrap}.exam-bar{color:#edf9f2;background:#123c36;top:0}.option{color:var(--text)}.option input{margin:0}.option:has(input:checked){color:var(--text)}input[type=radio]{accent-color:var(--accent)}footer{margin-top:12px;padding:22px 28px}footer>.row{margin-top:0}footer button{border-color:var(--border);background:var(--surface);font-size:.75rem}footer p{margin:8px 0;font-size:.75rem}.log,.modal>div{color:var(--text)}.appearance{max-width:600px;margin-top:20px}#flashcards{scroll-margin-top:24px}@media (width>=960px){.dashboard-top>.progress-card{padding-bottom:19px}}@media (width<=1000px){.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.dashboard-heading{gap:16px}.dashboard-heading h2{font-size:1.65rem}.diagnostic-actions{flex-direction:column;gap:0}.quick-tools button{gap:9px;padding:14px 12px}.quick-tools .tile-icon{display:none}nav button{padding-inline:11px}}@media (width<=760px){.app-header{padding:18px 18px 16px}.brand h1{font-size:1.06rem}.brand .eyebrow{font-size:.75rem}main{padding:22px 18px}nav{grid-template-columns:repeat(4,minmax(0,1fr));gap:5px;padding:0 18px 16px;display:grid}nav button{background:var(--surface);border:1px solid var(--border);justify-content:center;gap:6px;min-height:44px;padding:9px 5px;font-size:.75rem;line-height:1.3}nav .icon{width:15px;height:15px}.dashboard-heading{margin-bottom:21px;display:block}.dashboard-heading h2{max-width:25ch;font-size:1.6rem}.dashboard-heading p{max-width:48ch;font-size:.83rem}.offline-chip{margin-top:13px;padding:5px 10px;font-size:.75rem}.dashboard-top,.dashboard-middle{grid-template-columns:1fr;gap:16px;margin-bottom:16px}.dashboard section{padding:21px}.dashboard .next-session{padding:22px}.next-session h3{margin-top:18px;font-size:1.55rem}.next-reason{font-size:.85rem}.session-path{gap:12px}.session-path strong,.session-path small{font-size:.75rem}.progress-overview{text-align:left;flex:none;align-items:center;gap:24px;display:flex}.progress-ring{flex-shrink:0;width:135px;height:135px;margin:5px 0 14px}.progress-overview p{max-width:22ch;margin:0 0 8px;font-size:.8rem}.progress-ring strong{font-size:1.9rem}.evidence-counts{padding:13px 0}.progress-card .subtle-link{padding-top:10px}.dashboard .diagnostic-banner{flex-wrap:wrap;gap:12px;margin-bottom:16px;padding:17px 20px}.diagnostic-banner>.tile-icon{display:none}.diagnostic-banner>div:first-of-type{flex-basis:100%}.diagnostic-actions{flex-direction:row;gap:12px}.diagnostic-actions button{font-size:.75rem}.dashboard .category-section{margin-bottom:16px}.category-card{padding:15px}.category-card>strong{font-size:.78rem}.category-top{margin-bottom:12px}.category-score b{font-size:1rem}.category-top>span:last-child,.category-card small,.category-section>p{font-size:.75rem}.quick-tools{grid-template-columns:1fr;gap:10px}.quick-tools button{padding:15px 18px}.quick-tools .tile-icon{display:grid}.quick-tools strong{font-size:.77rem}.quick-tools small{font-size:.75rem}.theme-toggle span{display:none}.theme-toggle{width:44px;min-width:44px;padding:10px}footer{padding:20px 18px}}@media (width<=480px){.app-header{gap:10px;padding:15px 14px}.brand{gap:9px}.brand h1{max-width:21ch;font-size:.97rem;line-height:1.25}.brand-mark{border-radius:10px;width:35px;height:42px}.brand-mark .icon{width:22px}.brand .eyebrow{font-size:.75rem}.theme-toggle{flex-shrink:0;min-width:44px}nav{grid-template-columns:repeat(4,minmax(0,1fr));padding:0 14px 14px}nav button{white-space:normal;overflow-wrap:normal;min-height:46px;font-size:.75rem;line-height:1.3}nav .icon{display:none}main{padding:20px 14px}.dashboard section{padding:18px}.dashboard .next-session{padding:21px 18px}.next-session h3{font-size:1.45rem}.card-kicker,.next-kind{font-size:.75rem}.next-reason{font-size:.81rem}.next-session .session-start{min-height:54px;padding:14px;font-size:.8rem}.session-choice button{flex:1;padding:10px}.session-path{gap:9px;margin-top:18px;padding-top:16px}.session-path li{display:block}.session-path li>span{margin-bottom:6px}.session-path strong,.session-path small,.session-note{font-size:.75rem}.dashboard-heading h2{font-size:1.5rem}.progress-overview{gap:18px}.progress-ring{width:122px;height:122px}.progress-ring strong{font-size:1.7rem}.progress-overview p,.progress-ring small{font-size:.75rem}.section-heading h3{font-size:.91rem}.section-heading .text{padding-inline:0;font-size:.75rem}.section-heading .text .icon{width:14px}.queue-item{gap:11px}.queue-copy strong{font-size:.78rem}.queue-copy small,.queue-note{font-size:.75rem}.category-grid{gap:10px}.category-card{padding:13px 11px}.category-card>strong,.category-top>span:last-child{font-size:.75rem}.category-top .icon{width:18px}.category-card small{font-size:.75rem}.category-score b{font-size:.87rem}.category-score .icon{width:13px}.sample-note{min-height:2.9em}.category-section>p,.review-item strong,.quick-tools strong,.quick-tools small{font-size:.75rem}.row>button,.row>.button{white-space:normal;flex-shrink:1;max-width:100%}article{padding:18px 16px}article h2{font-size:1.45rem}article .small,article .refs{font-size:.8rem}figure img{padding:3px}legend{font-size:1.03rem}.option{padding:13px 12px;font-size:.95rem}section .row>label{min-width:100%}footer{padding:20px 14px}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}@media print{.theme-toggle,.quick-tools,.session-choice{display:none}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--text:#172b27;--muted:#425d54;--bg:#fff;--surface:#fff;--border:#b3c4bd}.dashboard-top,.dashboard-middle{display:block}.dashboard .next-session{color:#172b27;background:#fff}.next-session p{color:#425d54}}.card-kicker{flex-wrap:wrap}.session-path li,.category-card,.dashboard-heading>div{min-width:0}@media (width<=760px){input:not([type=radio]),select,textarea{font-size:16px}}.save-status{overflow-wrap:anywhere;font-weight:600}.save-status.is-saved{color:var(--accent)}.server-backup .row{align-items:stretch}.server-backup input[type=file]{min-width:0;max-width:100%}.learning-coach{border:1px solid var(--border);background:var(--surface);border-radius:18px;margin:1.25rem 0;padding:1.5rem}.coach-signals{grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:1.25rem 0;display:grid}.coach-signals>div{border-left:3px solid var(--accent);padding-left:.8rem}.coach-signals dt{color:var(--muted);font-size:.85rem}.coach-signals dd{margin:.3rem 0 0;font-size:1.65rem;font-weight:750}.coach-session{background:var(--surface-soft);border-radius:12px;justify-content:space-between;align-items:center;gap:1rem;margin:1rem 0;padding:1rem;display:flex}.coach-session p{margin:.4rem 0}.coach-session button{flex-shrink:0}.learning-coach h4{margin:0 0 .6rem;font-size:1rem}.coach-errors{grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:1rem 0;display:grid}.coach-errors article{border:1px solid var(--border);min-width:0;box-shadow:none;margin:0;padding:1rem}.coach-errors article strong{display:block}.coach-errors p{font-size:.9rem}.coach-feedback,.recall-prompt{background:var(--surface-soft);border-radius:10px;padding:1rem}.session-recap{border-left:4px solid var(--accent)}@media (width<=700px){.learning-coach{padding:1rem}.coach-signals{gap:.5rem}.coach-signals dt{font-size:.75rem}.coach-session{display:block}.coach-session button{width:100%;margin-top:.8rem}.coach-errors{grid-template-columns:1fr}}.question-tables{background:var(--surface-soft);border:1px solid var(--border);color:var(--text);border-radius:12px;min-width:0;margin:16px 0;padding:16px}.question-tables h3{margin:0 0 8px}.question-tables p{overflow-wrap:anywhere;margin:8px 0;font-size:.8rem}.question-table{margin:16px 0}.question-table-wrap{max-width:100%;overflow-x:auto}.question-table table{table-layout:fixed;border-collapse:collapse;background:var(--surface);width:100%;font-size:.9rem}.question-table caption{text-align:left;padding-bottom:8px;font-weight:750}.question-table th,.question-table td{border:1px solid var(--border);overflow-wrap:anywhere;text-align:center;padding:9px 6px}.question-table th:first-child{text-align:left}.question-table thead{background:var(--surface-soft)}@media (width<=480px){.question-tables{padding:12px}.question-table table{font-size:.8rem}.question-table th,.question-table td{padding:8px 4px}}.study-aid{background:var(--surface-soft);border:1px solid var(--border);color:var(--text);border-radius:13px;margin:18px 0;padding:18px}.study-aid h3{margin:5px 0 8px}.study-aid>p{max-width:75ch}.study-aid figure{margin:16px 0}.study-aid figure img{border:1px solid var(--border);max-height:285px;padding:5px}.aid-facts table,.aid-route table{border-collapse:collapse;table-layout:fixed;background:var(--surface);width:100%}.aid-facts caption,.aid-route summary{text-align:left;padding:0 0 9px;font-weight:700}.aid-facts th,.aid-facts td,.aid-route th,.aid-route td{text-align:left;vertical-align:top;border:1px solid var(--border);overflow-wrap:anywhere;padding:10px 11px}.aid-facts th{width:43%;color:var(--muted);font-size:.84rem}.aid-facts td{font-weight:650}.aid-route th{width:34%}.aid-route td,.aid-route th{font-size:.84rem}.aid-table-wrap{max-width:100%;padding-bottom:2px;overflow-x:auto}.aid-formula{border-left:4px solid var(--accent);background:var(--surface);gap:4px;padding:13px 15px;display:grid}.aid-formula span{font-size:.95rem}.aid-route{margin:16px 0 10px}.aid-example{background:var(--surface);border-left:4px solid var(--warning);margin:14px 0;padding:14px 16px}.aid-example h4{margin:0 0 8px}.aid-example ol{margin-bottom:0;padding-left:22px}@media (width<=480px){.study-aid{margin:14px 0;padding:14px}.study-aid figure img{padding:2px}.aid-facts th,.aid-facts td{border-bottom:0;width:100%;display:block}.aid-facts td{border-top:0;padding-top:0}.aid-facts tr:last-child td{border-bottom:1px solid var(--border)}.aid-route thead{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.aid-route table,.aid-route tbody,.aid-route tr,.aid-route th,.aid-route td{width:100%;display:block}.aid-route tr{border:1px solid var(--border);background:var(--surface);border-radius:8px;margin:0 0 10px;padding:6px}.aid-route th,.aid-route td{border:0;padding:6px 8px;font-size:.88rem}.aid-route th:before,.aid-route td:before{content:attr(data-label);color:var(--muted);letter-spacing:.04em;text-transform:uppercase;margin-bottom:2px;font-size:.68rem;font-weight:750;display:block}.aid-formula{font-size:.9rem}}.option-copy{overflow-wrap:anywhere;min-width:0}.answer-label{margin-top:4px;font-size:.85rem;display:block}.answer-correct{background:color-mix(in srgb,var(--accent) 15%,var(--surface));border-color:var(--accent);color:var(--accent-text)}.option.answer-correct:has(input:checked){background:color-mix(in srgb,var(--accent) 15%,var(--surface));border-color:var(--accent);color:var(--accent-text)}.answer-incorrect{background:var(--error-bg);border-color:var(--error);color:var(--error)}.option.answer-incorrect:has(input:checked){background:var(--error-bg);border-color:var(--error);color:var(--error)}.option.answer-correct,.option.answer-incorrect{cursor:default;border-width:2px}.option.answer-incorrect input{accent-color:var(--error)}.result-correct{color:var(--accent-text)}.result-incorrect{color:var(--error)}.video-hint{background:var(--surface-soft);border:1px solid var(--border-strong);border-radius:10px;margin:18px 0;padding:18px}.video-hint ul{margin:0;padding-left:20px}.video-hint li{margin:16px 0}.video-hint a{font-weight:650}.video-hint li p{margin:6px 0}.video-hint h3{margin-top:0}.next-session .session-alternative{color:#e7f7ed;background:0 0;border-color:#73a693;justify-content:space-between;width:100%;margin-top:10px;font-size:.82rem}.next-session .session-alternative:hover{background:#245b50}.dashboard .home-videos{background:var(--surface-soft);align-items:center;gap:18px;margin-bottom:20px;display:flex}.home-videos>div{flex:1;min-width:0}.home-videos h3{margin:3px 0}.home-videos p{color:var(--muted);margin:0;font-size:.87rem}.home-videos>button{flex-shrink:0}.onward-action{border:1px solid var(--border-strong);background:var(--surface-soft);border-radius:10px;margin:14px 0;padding:16px}.onward-action p{margin-top:0}.video-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.video-card{flex-direction:column;gap:12px;width:100%;margin:0;display:flex}.video-card h3,.video-card p{margin:0}.video-card h3{overflow-wrap:anywhere}.video-card>.eyebrow{align-items:center;gap:8px;display:flex}.video-card>.eyebrow .icon{flex-shrink:0}.video-card>.button{align-self:flex-start;margin-top:auto}.video-topics{flex-wrap:wrap;gap:4px;display:flex}.video-topics button{font-size:.8rem}.video-library select{max-width:100%}.video-library .row>label{flex:1;min-width:0}@media (width<=700px){.dashboard .home-videos{flex-wrap:wrap;gap:12px}.home-videos>.tile-icon{display:none}.home-videos>div{flex-basis:100%}.home-videos>button{width:100%}.video-grid{grid-template-columns:1fr}.video-library .row>label{min-width:100%}.video-card{padding:20px}}.lesson-reader{background:var(--surface);border:1px solid var(--border);border-radius:16px;max-width:780px;margin:0 auto;padding:28px}.learning-path{color:var(--muted);gap:8px;margin:20px 0 28px;padding:0;font-size:.85rem;list-style:none;display:flex}.learning-path li{border-bottom:3px solid var(--border);flex:1;padding:9px 0}.learning-path li[aria-current=step]{border-color:var(--accent);color:var(--accent-text);font-weight:750}.lesson-content{line-height:1.8}.lesson-content h3{margin-top:0}.lesson-content figure{margin:22px 0}.lesson-content figure img{max-height:300px}.lesson-content ol.worked{padding:20px 20px 20px 40px}.lesson-content li+li{margin-top:10px}.learning-forward{margin:26px 0 20px}.learning-forward>.primary,.guided-question>.primary{justify-content:center;width:100%;min-height:52px}.learning-forward>.small{color:var(--muted);margin:10px 0}.lesson-reference,.question-support,.guided-question details{border-top:1px solid var(--border);margin-top:22px;padding-top:16px}.lesson-reference>summary,.lesson-browser>summary,.question-support>summary,.guided-question details>summary{color:var(--muted);cursor:pointer;min-height:44px;font-weight:550}.lesson-reference .refs{padding-left:20px}.lesson-reference li{overflow-wrap:anywhere}.lesson-browser{margin-top:24px}.lesson-browser .search{margin-top:20px}.learn-next{max-width:780px}.learn-next h3{font-size:1.4rem}.guided-question{background:0 0;border:0;margin:0;padding:0}.guided-question fieldset{border:0;padding:0}.guided-question>.primary{margin-top:16px}@media (width<=480px){.lesson-reader{padding:20px 16px}.learning-path{font-size:.78rem}.lesson-content{font-size:1rem}}.lesson-comic{border:2px solid var(--border-strong);background:var(--surface);border-radius:1rem;margin-block:1.5rem;padding:1.1rem}.comic-panels{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:1rem 0;padding:0;list-style:none;display:grid}.comic-panel{border:2px solid var(--border-strong);background:var(--surface-soft);border-radius:.75rem;min-width:0;padding:1rem}.comic-panel h4{align-items:center;gap:.6rem;margin:0 0 .8rem;font-size:1.05rem;display:flex}.comic-step{border:2px solid;border-radius:50%;flex:none;place-items:center;width:1.8rem;height:1.8rem;font-size:.9rem;display:inline-grid}.comic-speech{border:1px solid;border-radius:1rem 1rem 1rem .15rem;padding:.7rem .8rem;font-weight:600;line-height:1.5;position:relative}.comic-learner{margin-right:.5rem}.comic-panel figure{margin:.8rem 0 0}.comic-panel img{background:#f8fafc;border-radius:.5rem;width:100%;height:auto;display:block}.comic-panel figcaption{margin-top:.6rem;font-size:.95rem;line-height:1.55}.comic-takeaway{border-left:4px solid;padding:.8rem}.lesson-video-options{border:1px solid var(--border,#68778b);border-radius:.75rem;margin:1.25rem 0;padding:1rem}.lesson-video-options>summary{cursor:pointer;min-height:44px;font-weight:650;display:list-item}.study-video-list{gap:1rem;display:grid}.study-video-card{border:1px solid var(--border,#68778b);border-radius:.6rem;min-width:0;padding:1rem}.study-video-card h4{margin:.6rem 0;font-size:1.05rem;line-height:1.5}.study-video-card a{overflow-wrap:anywhere}.study-video-card .button{align-items:center;min-height:44px;display:inline-flex}.media-notes{margin-top:1rem}.media-notes summary{cursor:pointer;min-height:44px}.lesson-videos p{overflow-wrap:anywhere}@media (width<=650px){.comic-panels{grid-template-columns:1fr}.lesson-comic,.comic-panel{padding:.7rem}.study-video-card{padding:.75rem}}.lesson-interaction-options{border:1px solid var(--border);border-radius:12px;margin:1.1rem 0;padding:.8rem 1rem}.lesson-interaction-options summary{cursor:pointer;align-items:center;min-height:44px;font-weight:700;display:flex}.lesson-interactive{max-width:100%;padding:.5rem 0}.lesson-interactive svg{width:100%;max-width:560px;height:auto;max-height:310px;margin:1rem auto;display:block}.interaction-controls{grid-template-columns:repeat(2,minmax(0,1fr));gap:.9rem 1.3rem;display:grid}.interaction-controls label{min-width:0;display:block}.interaction-controls label>span{flex-wrap:wrap;justify-content:space-between;gap:.4rem;font-weight:600;display:flex}.interaction-controls output{font-variant-numeric:tabular-nums}.interaction-controls input[type=range]{width:100%;min-height:44px;accent-color:var(--accent);margin:0}.interaction-toggle{align-items:center;gap:.6rem;min-height:44px;display:flex!important}.interaction-toggle input,.interaction-radio{width:20px;min-width:20px;height:20px;min-height:20px;accent-color:var(--accent);flex:0 0 20px;margin:0}.interaction-choices{border:0;flex-wrap:wrap;gap:.5rem;padding:0;display:flex}.interaction-choices legend{margin-bottom:.5rem;font-weight:700}.interaction-choice{border:1px solid var(--border);cursor:pointer;border-radius:8px;align-items:center;gap:.5rem;min-height:44px;padding:.5rem .8rem;display:flex}.interaction-nodes,.interaction-flow{grid-template-columns:repeat(4,minmax(0,1fr));gap:.7rem;margin:1rem 0;padding:0;list-style:none;display:grid}.interaction-node{border:1px solid var(--border);overflow-wrap:anywhere;border-radius:10px;flex-direction:column;gap:.4rem;padding:.8rem;display:flex;position:relative}.interaction-node:not(:last-child):after{content:"→";font-weight:800;position:absolute;top:40%;right:-.65rem}.interaction-node-warning{border:2px solid #bd781b}.interaction-node-inactive{border-style:dashed}.interaction-node-result{border-width:2px}.interaction-node-state{font-size:.8rem;font-weight:600}.interaction-results dl{grid-template-columns:repeat(2,minmax(0,1fr));gap:.6rem;margin:1rem 0;display:grid}.interaction-results dl>div{border:1px solid var(--border);border-radius:8px;padding:.7rem}.interaction-results dd{font-variant-numeric:tabular-nums;margin:0;font-size:1.15rem;font-weight:750}.interaction-results dt{font-size:.9rem}.interaction-reset{min-height:44px}.interaction-zoom{border:2px solid var(--border-strong);background:var(--surface);width:min(900px,100vw - 24px);max-width:calc(100vw - 24px);color:var(--text);border-radius:12px;padding:1rem}.interaction-zoom::backdrop{background:#0009}.interaction-zoom-heading{justify-content:space-between;align-items:center;gap:.5rem;display:flex}.interaction-expanded-visual{max-height:70vh;overflow:auto}.interaction-expanded-visual svg{width:100%;min-width:600px;max-width:none;max-height:none}@media (width<=650px){.interaction-controls{grid-template-columns:1fr}.interaction-nodes,.interaction-flow{grid-template-columns:repeat(2,minmax(0,1fr))}.interaction-node:nth-child(2):after{display:none}.interaction-results dl{grid-template-columns:1fr}.interaction-choice{width:100%}}:root{--radius:18px;--shadow:0 4px 24px #172f2606;font-family:Segoe UI,system-ui,-apple-system,sans-serif}button,.button,input:not([type=radio]),select{border-radius:10px}button,.button{transition:background-color .16s,border-color .16s,box-shadow .16s}button:disabled{transition:none}h2,h3{text-wrap:balance}section,article{border-radius:var(--radius)}.app-shell{grid-template-columns:238px minmax(0,1fr);min-height:100vh;display:grid}.app-sidebar{color:#eaf4ed;background:#132f2b;border-right:1px solid #29443d;flex-direction:column;height:100dvh;min-height:0;padding:30px 18px 22px;display:flex;position:sticky;top:0;overflow-y:auto}.app-sidebar .app-header{width:100%;margin:0;padding:0 10px 38px}.app-sidebar .brand{color:#f1f7f3;align-items:flex-start;gap:11px}.app-sidebar .brand-mark{color:#183f30;background:#c3ecd2;border-radius:11px;flex-shrink:0;width:38px;height:42px}.app-sidebar .brand h1{letter-spacing:-.025em;margin:6px 0 0;font-size:1rem;font-weight:650;line-height:1.4}.app-sidebar .brand .eyebrow{color:#b0cdc0;letter-spacing:.12em;white-space:nowrap;font-size:.625rem}.app-sidebar .theme-toggle{color:#d9e9df;background:#1c3b34;border-color:#365349;border-radius:10px;flex-shrink:0;justify-content:flex-start;margin:24px 10px 0;font-size:.8rem}.app-sidebar .theme-toggle:hover{background:#294b40}.nav-caption{color:#9fbcaf;letter-spacing:.15em;text-transform:uppercase;margin:0 14px 14px;font-size:.625rem;font-weight:650}.app-sidebar nav{border:0;flex-flow:column;flex-shrink:0;gap:5px;width:100%;max-width:none;margin:0;padding:0;display:flex}.app-sidebar nav button{color:#bbd0c5;background:0 0;border:1px solid #0000;border-radius:10px;justify-content:flex-start;gap:12px;min-height:47px;padding:12px 14px;font-size:.84rem;font-weight:500;position:relative}.app-sidebar nav button:hover{color:#f1f7f3;background:#204238}.app-sidebar nav button[aria-current]{color:#173e2d;background:#c3ecd2;font-weight:650}.app-sidebar nav .icon{width:19px;height:19px;display:block}.nav-active-dot{background:currentColor;border-radius:50%;width:5px;height:5px;margin-left:auto}.sidebar-note{margin:auto 10px 0;padding-top:30px}.sidebar-note-icon{color:#bbdbc7;margin-bottom:15px;display:flex}.sidebar-note strong{font-size:.85rem;font-weight:550;line-height:1.6;display:block}.sidebar-note p{color:#a8c2b5;margin:8px 0 20px;font-size:.78rem;line-height:1.7}.sidebar-note>span:last-child{color:#92b2a2;letter-spacing:.15em;font-size:.58rem}.workspace{min-width:0}.workspace-bar{border-bottom:1px solid var(--border);height:76px;color:var(--muted);justify-content:space-between;align-items:center;gap:20px;padding:0 40px;font-size:.76rem;display:flex}.workspace-bar>span:first-child{align-items:center;gap:16px;display:flex}.workspace-bar strong{color:var(--text);font-weight:550}.workspace-mode{align-items:center;gap:8px;display:flex}.workspace-mode .status-dot{background:var(--accent-text)}.workspace main{max-width:1380px;margin:0 auto;padding:38px 40px 26px}.workspace footer{border-top:1px solid var(--border);max-width:1380px;margin:0 auto;padding:18px 40px 28px}.workspace footer button{background:0 0;font-size:.8rem}.workspace footer p{font-size:.75rem;line-height:1.7}.dashboard-heading{align-items:center;gap:16px;margin-bottom:28px}.dashboard .eyebrow,.page-heading .eyebrow{letter-spacing:.15em;font-size:.68rem;font-weight:650}.dashboard-heading h2{letter-spacing:-.045em;margin:10px 0;font-size:clamp(1.9rem,2.6vw,2.6rem);font-weight:650}.dashboard-heading p{font-size:.93rem;line-height:1.6}.offline-chip{background:0 0;margin:0;padding:7px 10px;font-size:.7rem}.dashboard-top,.dashboard-middle{grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:22px;margin-bottom:24px}.dashboard section{border-radius:var(--radius);box-shadow:var(--shadow);padding:25px}.dashboard .exam-readiness{margin-bottom:24px;padding:0}.dashboard .next-session{background:radial-gradient(at 100% 0,#39695466,#0000 65%),#173e34;border-color:#315d4c;padding:28px 30px 24px;position:relative;overflow:hidden}.next-session:before{content:"";pointer-events:none;border:1px solid #bce8cc22;border-radius:50%;width:220px;height:220px;position:absolute;top:-130px;right:-95px;box-shadow:0 0 0 35px #bce8cc07,0 0 0 70px #bce8cc05}.card-kicker{font-size:.75rem;position:relative}.card-kicker>span:first-child{text-transform:uppercase;letter-spacing:.1em;color:#c0dccc;font-size:.65rem}.next-kind{padding:4px 10px;font-size:.7rem}.next-session h3{max-width:23ch;margin:23px 0 12px;font-size:clamp(1.7rem,2.3vw,2.15rem);font-weight:600;line-height:1.18}.next-reason{color:#c6ddcf;max-width:52ch;margin-bottom:23px;font-size:.87rem;line-height:1.65}.session-settings{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-bottom:18px;display:flex}.session-settings>span{color:#c6ddcf;font-size:.75rem}.session-choice{background:#102f28;border:1px solid #416553;border-radius:10px;gap:4px;margin:0;padding:3px;display:flex}.session-choice button{background:0 0;border-color:#0000;border-radius:7px;gap:4px;min-height:38px;padding:6px 12px;font-size:.7rem}.session-choice strong{font-size:.84rem;font-weight:600}.session-choice button[aria-pressed=true]{background:#d9efdf;border-color:#d9efdf}.next-session .session-start{background:#c3ecd2;border-color:#c3ecd2;border-radius:10px;min-height:54px;padding:14px 18px;font-size:.88rem;font-weight:650;box-shadow:0 3px 8px #071e2422}.session-path{gap:14px;margin-top:22px;padding-top:20px}.session-path li{gap:8px}.session-path li>span{color:#d0ead8;background:#315b48;width:22px;height:22px;font-size:.7rem}.session-path strong{font-size:.73rem;font-weight:600}.session-path small{color:#c0d5c7;font-size:.7rem}.session-note{color:#bed6c7;margin-top:16px;font-size:.68rem}.section-heading{margin-bottom:16px}.section-heading h3{font-size:1rem;font-weight:650}.section-heading>.icon{width:19px;height:19px}.section-heading .text{font-size:.78rem}.progress-card{background:var(--surface)}.progress-overview{flex-direction:column;justify-content:center;align-items:center;display:flex}.progress-ring{width:158px;height:158px;margin-top:10px}.progress-ring svg{stroke-width:5px}.ring-value{stroke-linecap:butt}.progress-ring strong{font-size:2.5rem;font-weight:550}.progress-ring small{font-size:.73rem}.progress-overview p{margin:12px 0 24px;font-size:.8rem;line-height:1.6}.evidence-counts{padding:17px 0}.evidence-counts dt{font-size:.73rem}.evidence-counts dd{font-size:1.5rem;font-weight:550}.subtle-link{padding-top:16px;font-size:.77rem}.dashboard .diagnostic-banner{border:1px dashed var(--border-strong);box-shadow:none;background:0 0;margin-bottom:24px;padding:17px 20px}.diagnostic-banner h3{font-size:.9rem}.diagnostic-banner p{font-size:.8rem}.diagnostic-actions button{font-size:.77rem}.queue-item{gap:15px;padding:17px 0}.queue-number{border:1px solid var(--border);border-radius:9px;flex-shrink:0;align-self:center;place-items:center;width:32px;height:32px;padding:0;font-size:.72rem;display:grid}.queue-copy strong{font-size:.87rem;font-weight:600;line-height:1.5}.queue-copy small,.queue-note{font-size:.76rem;line-height:1.65}.review-card>p{font-size:.82rem}.dashboard-top .review-card{align-self:start}.review-item{padding:18px 0}.review-count{min-width:43px;height:46px;font-size:1.4rem;font-weight:500}.review-item strong{font-size:.83rem}.review-item small{font-size:.75rem}.dashboard .category-section{box-shadow:none;background:0 0;border:0;margin-bottom:28px;padding:7px 0 0}.category-grid{gap:12px;margin-top:20px}.category-card{background:var(--surface);border-radius:14px;padding:20px 17px}.category-card:hover{border-color:var(--category-colour);box-shadow:0 3px 12px #172f260a}.category-icon{background:color-mix(in srgb, var(--category-colour) 9%, var(--surface));border-radius:9px;place-items:center;width:34px;height:34px;display:grid}.category-top{margin-bottom:19px}.category-top>span:last-child{font-size:.65rem}.category-card>strong{font-size:.82rem;line-height:1.6}.category-score{margin-top:13px}.category-score b{font-size:1rem;font-weight:550}.category-card small{font-size:.72rem;line-height:1.6}.category-card .sample-note{margin-top:6px}.category-section>p{font-size:.73rem}.dashboard .home-videos{background:var(--surface-soft);box-shadow:none;margin-bottom:20px;padding:22px 25px}.home-videos>.tile-icon{background:var(--surface);border:0;border-radius:13px;width:46px;height:46px}.home-videos h3{margin:4px 0;font-size:1.1rem}.home-videos p{font-size:.81rem}.home-videos>button{background:0 0;font-size:.8rem}.quick-tools{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:28px}.quick-tools button{gap:12px;padding:18px}.quick-tools strong{font-size:.8rem;line-height:1.5}.quick-tools small{font-size:.73rem}.quick-tools .tile-icon{border:0}.dashboard .next-list{margin-bottom:24px}.queue-entry{border-bottom:1px solid var(--border)}.queue-entry:last-of-type,.queue-entry .queue-item{border-bottom:0}.queue-evidence{margin:0 0 10px 47px;font-size:.82rem}.queue-evidence summary,.session-evidence summary{cursor:pointer;min-height:44px;padding-block:10px}.queue-evidence p{margin:8px 0;line-height:1.7}.session-evidence{color:#d9efdf;border-top:1px solid #416553;margin-top:12px;font-size:.8rem}.session-evidence p{margin:8px 0;line-height:1.7}.study-video-card h4 a{min-height:44px;padding-block:10px;display:block}.sr-only{clip:rect(0, 0, 0, 0);clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.dashboard .learning-coach{margin-top:28px;padding:26px}.coach-signals{gap:20px;margin:20px 0}.coach-signals>div{border-left-width:2px}.coach-signals dd{font-size:1.8rem;font-weight:550}.coach-session{padding:20px}.coach-session h4{font-size:.95rem}.coach-session p,.coach-errors p{font-size:.85rem;line-height:1.75}.coach-errors article{border-radius:12px;padding:20px}.coach-errors article>.eyebrow{margin-top:0;font-size:.63rem}.coach-errors article>strong{margin-top:8px;font-size:.92rem;line-height:1.5}.coach-errors article>button{font-size:.8rem}.coach-errors details{margin:10px 0;padding:8px 0}.coach-errors summary{font-size:.8rem}.cross-browser-progress{color:var(--muted);margin:26px 0 0;font-size:.83rem}.cross-browser-progress>summary{font-weight:500}.page-heading{margin:5px 0 30px}.page-heading h2,main>h2{letter-spacing:-.045em;font-size:2.1rem;font-weight:650}.page-heading p{max-width:65ch;font-size:.96rem}.lesson-reader{max-width:820px;box-shadow:var(--shadow);padding:38px 44px}.lesson-reader h2{letter-spacing:-.035em;margin:12px 0 24px;font-size:2rem;font-weight:650}.lesson-reader>.eyebrow{letter-spacing:.12em;font-size:.7rem}.lesson-content{font-size:1.06rem;line-height:1.9}.learning-path{gap:14px;margin-bottom:32px}.learning-path li{padding:12px 0;font-size:.82rem}.learning-forward>.primary,.guided-question>.primary{min-height:56px}.learn-next{border-left:4px solid var(--accent);box-shadow:var(--shadow);padding:28px}.learn-next h3{margin:12px 0 22px;font-size:1.65rem;font-weight:600}.lesson-card{border-radius:12px;gap:12px;padding:23px}.lesson-card:hover{background:var(--surface-soft)}.lesson-browser>summary{font-size:.9rem}.option{border-radius:10px;min-height:58px;padding:16px;line-height:1.6}.video-grid{gap:20px}.video-card{border-radius:15px;padding:26px}.video-card h3{font-size:1.15rem}.video-topics button{background:var(--surface-soft);border-color:var(--border);border-radius:8px}@media (width>=1600px){.app-shell{grid-template-columns:258px minmax(0,1fr)}.workspace main{padding-inline:52px}.dashboard .next-session{padding:32px 36px 27px}}@media (width>=1101px){.app-sidebar :focus-visible{outline-color:#ffc979}}@media (width>=1101px) and (height<=800px){.sidebar-note{display:none}.app-sidebar .theme-toggle{margin-top:auto}.app-sidebar nav{margin-bottom:24px}}@media (width<=1200px) and (width>=1101px){.app-shell{grid-template-columns:218px minmax(0,1fr)}.app-sidebar{padding-inline:12px}.workspace main{padding-inline:28px}.dashboard-heading{align-items:flex-start}.offline-chip{white-space:normal;max-width:120px}.dashboard-top,.dashboard-middle{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr)}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.quick-tools .tile-icon{display:none}}@media (width<=1100px){.app-shell{display:block}.app-sidebar{background:var(--surface);height:auto;min-height:0;color:var(--text);border:0;border-bottom:1px solid var(--border);padding:0;position:relative;overflow:visible}.app-sidebar .app-header{align-items:center;max-width:100%;padding:22px 90px 18px 28px}.app-sidebar .brand{color:var(--text);align-items:center}.app-sidebar .brand h1{margin-top:3px;font-size:1.06rem}.app-sidebar .brand .eyebrow{color:var(--accent-text);font-size:.65rem}.app-sidebar .brand-mark{background:var(--accent);color:var(--on-accent)}.app-sidebar .theme-toggle{background:var(--surface);width:44px;height:44px;color:var(--accent-text);border-color:var(--border);margin:0;padding:10px;position:absolute;top:21px;right:28px}.app-sidebar .theme-toggle span{display:none}.app-sidebar .theme-toggle:hover{background:var(--hover)}.app-sidebar nav{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent;flex-direction:row;gap:5px;padding:0 40px 15px 28px;overflow-x:auto;-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 28px),#0000);mask-image:linear-gradient(90deg,#000 calc(100% - 28px),#0000)}.app-sidebar nav button{color:var(--muted);white-space:nowrap;flex-shrink:0;gap:8px;min-height:44px;padding:10px 13px;font-size:.8rem}.app-sidebar nav button:hover{background:var(--hover);color:var(--text)}.app-sidebar nav button[aria-current]{background:var(--accent);color:var(--on-accent)}.app-sidebar nav .icon{width:17px;height:17px}.nav-caption,.sidebar-note,.nav-active-dot{display:none}.workspace-bar{height:58px;padding-inline:28px}.workspace main{padding:30px 28px}.workspace footer{padding-inline:28px}.dashboard-heading h2{font-size:2.1rem}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=760px){html{scroll-padding-top:20px}.workspace-bar{display:none}.app-sidebar .app-header{padding:19px 80px 15px 20px}.app-sidebar .theme-toggle{top:18px;right:20px}.app-sidebar nav{padding:0 40px 12px 20px}.app-sidebar nav button{padding:10px 12px}.workspace main{padding:27px 20px}.workspace footer{padding:20px}.dashboard-heading{margin-bottom:22px;display:block}.dashboard-heading h2{max-width:none;font-size:2rem}.dashboard-heading p{font-size:.87rem}.offline-chip{margin-top:14px}.dashboard-top,.dashboard-middle{grid-template-columns:1fr;gap:18px;margin-bottom:20px}.dashboard section{padding:22px}.dashboard .next-session{padding:25px}.next-session h3{max-width:24ch;font-size:1.9rem}.session-settings{margin-top:22px}.session-choice button{min-height:44px}.session-path li{display:flex}.progress-overview{text-align:left;flex-direction:row;justify-content:flex-start;gap:24px}.progress-ring{width:126px;height:126px;margin:0 0 14px}.progress-ring strong{font-size:2rem}.progress-overview p{margin:0 0 16px;font-size:.8rem}.progress-card .subtle-link{padding-top:15px}.diagnostic-actions{flex-flow:wrap}.category-grid{gap:12px}.quick-tools{grid-template-columns:1fr}.quick-tools .tile-icon{display:grid}.quick-tools strong{font-size:.85rem}.dashboard .learning-coach{padding:22px}.lesson-reader{padding:27px}.lesson-reader h2,.page-heading h2,main>h2{font-size:1.8rem}.lesson-content{font-size:1rem}}@media (width<=480px){.app-sidebar .app-header{padding:17px 70px 14px 16px}.app-sidebar .theme-toggle{top:17px;right:16px}.app-sidebar .brand{gap:10px}.app-sidebar .brand h1{max-width:22ch;font-size:.92rem}.app-sidebar .brand .eyebrow{font-size:.59rem}.app-sidebar .brand-mark{width:34px;height:39px}.app-sidebar nav{padding:0 40px 12px 16px}.app-sidebar nav button{gap:7px;font-size:.78rem}.workspace main{padding:26px 16px}.workspace footer{padding-inline:16px}.dashboard-heading h2{font-size:1.82rem;line-height:1.2}.dashboard-heading p{max-width:32ch}.dashboard .next-session{padding:22px 20px}.next-session h3{margin-top:22px;font-size:1.75rem}.next-reason{font-size:.84rem}.session-settings{display:block}.session-settings>span{margin-bottom:9px;display:block}.session-choice{width:100%}.session-choice button{flex:1}.next-session .session-start{padding-inline:13px;font-size:.82rem}.session-path{gap:12px}.session-path li{display:block}.session-path li>span{margin:0 0 9px}.session-path strong{font-size:.71rem}.session-path small{font-size:.69rem}.progress-overview{gap:17px}.progress-ring{width:118px;height:118px}.progress-ring small{font-size:.66rem}.section-heading{gap:9px}.section-heading h3{font-size:.94rem}.section-heading .text{font-size:.73rem}.category-card{padding:17px 13px}.category-top{gap:6px}.category-top>span:last-child{font-size:.61rem}.category-card>strong{font-size:.79rem}.category-score b{font-size:.94rem}.category-card small{font-size:.69rem}.coach-signals{gap:10px}.coach-signals dt{font-size:.7rem}.coach-signals dd{font-size:1.6rem}.coach-session{padding:16px}.lesson-reader{padding:24px 19px}.lesson-reader h2{font-size:1.65rem}.learning-path{gap:9px}.learning-path li{font-size:.76rem}.option{padding:14px 12px}}@media (prefers-reduced-motion:reduce){button,.button{transition:none}}@media print{.app-shell{display:block}.app-sidebar,.workspace-bar{display:none}.workspace main{padding:0}.next-session:before{display:none}.dashboard .next-session{color:#172b27;background:#fff;border-color:#b3c4bd}.next-session .card-kicker>span:first-child,.next-session .next-kind,.next-session .session-path small,.next-session .session-settings>span{color:#425d54}}