.sip-intro{padding:84px 0 78px;border-top:1px solid var(--line)}
.sip-intro .section-heading,.sip-progressive .section-heading,.sip-power .section-heading,.sip-lab-section .section-heading{max-width:940px}.sip-intro h2{overflow-wrap:anywhere;hyphens:auto}
.sip-definition-grid,.sip-derive-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.sip-card{min-width:0;padding:21px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel)}
.sip-card.primary{background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 8%,var(--panel-solid)),var(--panel));border-color:color-mix(in srgb,var(--accent) 26%,var(--line))}
.sip-card>span,.sip-reading>span{display:block;color:var(--accent);font-size:.72rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase}
.sip-card h3{margin:8px 0 7px;font-size:1rem}.sip-card p{margin:0;color:var(--muted);font-size:.88rem}
.sip-eq{display:block;min-height:76px;margin:12px 0;padding:20px 12px;line-height:1.45;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--bg) 45%,transparent);font-family:"Cambria Math","STIX Two Math",Georgia,serif;font-size:clamp(1.04rem,2.1vw,1.32rem);text-align:center;overflow-wrap:anywhere}
.sip-eq.multiline{display:block;min-height:94px}
.sip-convention,.sip-note{margin-top:14px;padding:17px 19px;border-left:3px solid var(--accent);border-radius:0 14px 14px 0;background:color-mix(in srgb,var(--accent) 5%,var(--panel));color:var(--muted);font-size:.87rem}.sip-note{border-left-color:var(--warm);background:color-mix(in srgb,var(--warm) 6%,var(--panel))}.sip-convention strong,.sip-note strong{color:var(--text)}.sip-convention p,.sip-note p{display:inline;margin:0 0 0 7px}
.sip-progressive{padding:80px 0;border-block:1px solid var(--line);background:color-mix(in srgb,var(--bg-elevated) 58%,transparent)}
.sip-power{padding:82px 0}.sip-power-chain{display:grid;grid-template-columns:1fr auto 1.2fr auto 1fr;gap:10px;align-items:center}.sip-power-chain>div:not(.sip-chain-arrow){min-width:0;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}.sip-power-chain span{display:block;color:var(--accent);font-size:.67rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.sip-power-chain strong{display:block;margin-top:5px;font-family:"Cambria Math","STIX Two Math",Georgia,serif;font-size:1rem;overflow-wrap:anywhere}.sip-power-chain small{display:block;margin-top:5px;color:var(--muted);font-size:.72rem}.sip-chain-arrow{color:var(--accent);font-size:1.3rem;font-weight:900}.sip-spreading-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}
.sip-lab-section{padding:84px 0 94px;border-top:1px solid var(--line)}.sip-lab-shell{display:grid;grid-template-columns:310px minmax(0,1fr);gap:14px;align-items:start}.sip-controls,.sip-panel{min-width:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);box-shadow:0 16px 50px rgba(0,0,0,.1)}.sip-controls{position:sticky;top:calc(var(--header-h) + 16px);padding:17px}.sip-presets{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin:0 0 2px;padding:0 0 13px;border:0;border-bottom:1px solid var(--line)}.sip-presets legend{grid-column:1/-1;width:100%;margin-bottom:7px;color:var(--muted);font-size:.72rem;font-weight:750}.sip-presets button{min-width:0;padding:9px 5px;border:1px solid var(--line);border-radius:10px;background:var(--panel-solid);color:var(--muted);font-size:.68rem;font-weight:800;cursor:pointer;overflow-wrap:anywhere}.sip-presets button.is-active{border-color:color-mix(in srgb,var(--accent) 55%,var(--line));color:var(--text);background:color-mix(in srgb,var(--accent) 10%,var(--panel-solid))}.sip-controls label{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 12px;align-items:center;padding:9px 0;border-bottom:1px solid var(--line);font-size:.8rem;font-weight:700}.sip-controls label span{min-width:0}.sip-controls output{color:var(--accent);font-size:.73rem;font-variant-numeric:tabular-nums;text-align:right}.sip-controls input[type="range"]{grid-column:1/-1;width:100%;accent-color:var(--accent)}.sip-reset{width:100%;margin-top:14px}.sip-assumption{margin-top:12px;padding:12px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--bg) 44%,transparent)}.sip-assumption strong{font-size:.76rem}.sip-assumption p{margin:5px 0 0;color:var(--muted);font-size:.72rem;line-height:1.45}
.sip-stage{display:grid;gap:14px;min-width:0}.sip-panel{overflow:hidden}.sip-panel-head{display:flex;justify-content:space-between;gap:14px;align-items:center;padding:15px 17px;border-bottom:1px solid var(--line)}.sip-panel-head>div:first-child{min-width:0}.sip-panel-head span{display:block;color:var(--accent);font-size:.67rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}.sip-panel-head strong{display:block;margin-top:3px;font-size:.9rem;overflow-wrap:anywhere}.sip-status{flex:0 0 auto;padding:6px 9px;border:1px solid color-mix(in srgb,var(--accent) 35%,var(--line));border-radius:999px;color:var(--muted);font-size:.68rem;font-weight:800;white-space:nowrap}
.sip-flow-svg,.sip-time-svg,.sip-complex-svg{display:block;width:100%;height:auto;background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 2%,transparent),transparent)}.sip-flow-svg{min-height:300px}.sip-time-svg,.sip-complex-svg{min-height:300px}.sip-axis,.sip-zero{stroke:var(--line-strong);stroke-width:1.2}.sip-zero{stroke-dasharray:4 5}.sip-grid{stroke:var(--line);stroke-width:1}.sip-grid-label,.sip-svg-label{fill:var(--muted);font-size:12px;font-weight:700}.sip-active-line{stroke:var(--accent-2);stroke-width:2.5;stroke-dasharray:8 6}.sip-instant-path{fill:none;stroke:var(--accent);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}.sip-probe-line,.sip-time-marker{stroke:var(--warm);stroke-width:1.7;stroke-dasharray:5 5}.sip-probe-point{fill:var(--warm);stroke:var(--bg);stroke-width:2}.sip-time-pressure,.sip-time-velocity,.sip-time-intensity{fill:none;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.sip-time-pressure{stroke:var(--accent)}.sip-time-velocity{stroke:var(--accent-3)}.sip-time-intensity{stroke:var(--warm)}.sip-complex-ring{fill:none;stroke:var(--line-strong);stroke-width:1.4;stroke-dasharray:5 5}.sip-active-vector{stroke:var(--accent-2);stroke-width:4;stroke-linecap:round}.sip-reactive-vector{stroke:var(--warm);stroke-width:4;stroke-linecap:round}.sip-complex-point{fill:var(--text);stroke:var(--bg);stroke-width:2}.sip-svg-legend{display:flex;flex-wrap:wrap;gap:8px 16px;padding:10px 16px 14px;border-top:1px solid var(--line);color:var(--muted);font-size:.68rem}.sip-svg-legend span{display:inline-flex;align-items:center;gap:6px}.sip-svg-legend i{display:inline-block;width:10px;height:10px;border-radius:999px}.sip-svg-legend i.instant{background:var(--accent)}.sip-svg-legend i.active{background:var(--accent-2)}.sip-svg-legend i.reactive{background:var(--warm)}.sip-svg-legend i.probe{background:var(--warm)}.sip-svg-legend i.pressure{background:var(--accent)}.sip-svg-legend i.velocity{background:var(--accent-3)}
.sip-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.sip-power-ledger{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;padding:16px}.sip-power-ledger>div{min-width:0;padding:13px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--bg) 35%,transparent)}.sip-power-ledger span{display:block;color:var(--muted);font-size:.67rem}.sip-power-ledger strong{display:block;margin-top:5px;font-size:.9rem;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.sip-power-ledger small{display:block;margin-top:6px;color:var(--muted);font-size:.66rem}.sip-power-ledger i{display:block;height:7px;margin-top:9px;border-radius:999px;background:var(--line);overflow:hidden}.sip-power-ledger i b{display:block;height:100%;width:0;border-radius:inherit;transition:width .12s ease}.sip-power-ledger i.forward b{background:var(--accent)}.sip-power-ledger i.reflected b{background:var(--warm)}.sip-power-ledger i.net b{background:var(--accent-2)}
.sip-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.sip-metrics div{min-width:0;padding:13px 14px;border:1px solid var(--line);border-radius:13px;background:var(--panel)}.sip-metrics span,.sip-checks span{display:block;color:var(--muted);font-size:.67rem}.sip-metrics strong{display:block;margin-top:5px;font-size:.88rem;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.sip-metrics small{display:block;margin-top:3px;color:var(--muted);font-size:.66rem}.sip-reading{padding:18px}.sip-reading h3{margin:6px 0 7px;font-size:1.02rem;overflow-wrap:anywhere}.sip-reading p{margin:0;color:var(--muted);font-size:.89rem}.sip-checks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:14px}.sip-checks div{padding:11px 12px;border:1px solid var(--line);border-radius:11px;background:color-mix(in srgb,var(--bg) 32%,transparent)}.sip-checks strong{display:block;margin-top:4px;font-size:.76rem;overflow-wrap:anywhere}.sip-cross-reference{margin:18px auto 0;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--muted);font-size:.86rem}.sip-cross-reference a{color:var(--text)}.sip-takeaways{padding-bottom:88px}.sip-takeaway-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.sip-takeaway-grid article{min-width:0;padding:16px;border-top:2px solid color-mix(in srgb,var(--accent) 40%,var(--line));background:linear-gradient(180deg,color-mix(in srgb,var(--accent) 3%,transparent),transparent)}.sip-takeaway-grid span{color:var(--accent);font-size:.66rem;font-weight:900}.sip-takeaway-grid strong{display:block;margin:6px 0 5px;font-size:.88rem}.sip-takeaway-grid p{margin:0;color:var(--muted);font-size:.76rem}
@media (max-width:980px){.sip-definition-grid,.sip-derive-grid,.sip-spreading-grid{grid-template-columns:1fr}.sip-lab-shell{grid-template-columns:1fr}.sip-controls{position:static}.sip-power-chain{grid-template-columns:1fr}.sip-chain-arrow{transform:rotate(90deg);justify-self:center}.sip-detail-grid{grid-template-columns:1fr}.sip-power-ledger{grid-template-columns:repeat(2,minmax(0,1fr))}.sip-takeaway-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.sip-intro,.sip-progressive,.sip-power,.sip-lab-section{padding-top:64px}.sip-card,.sip-controls{padding:15px}.sip-panel-head{align-items:flex-start;flex-direction:column}.sip-status{white-space:normal}.sip-power-ledger,.sip-metrics,.sip-checks,.sip-takeaway-grid{grid-template-columns:1fr}.sip-svg-legend{gap:7px 11px}.sip-grid-label,.sip-svg-label{font-size:14px}.sip-eq{font-size:1rem}.sip-convention p,.sip-note p{display:block;margin:6px 0 0}.sip-definition-grid h2,.sip-progressive h2,.sip-power h2,.sip-lab-section h2,.sip-takeaways h2{overflow-wrap:anywhere;hyphens:auto}}