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62px,#000 calc(100% - 62px),transparent);mask-image:linear-gradient(90deg,transparent,#000 62px,#000 calc(100% - 62px),transparent)}.bk-lane{display:flex;align-items:center;gap:8px;width:max-content;will-change:transform}.bk-lane{animation:bk-run var(--dur, 22s) linear infinite}.bk-lane-rev{animation-direction:reverse}@keyframes bk-run{0%{transform:translateZ(0)}to{transform:translate3d(-50%,0,0)}}.bk-chip{flex:none;display:flex;align-items:center;gap:6px;padding:5px 11px 5px 7px;border-radius:var(--r-pill);border:1px solid color-mix(in srgb,var(--accent) 38%,transparent);background:color-mix(in srgb,var(--accent) 6%,var(--surface-raised));white-space:nowrap}.bk-chip img{flex:0 0 18px;width:18px;height:18px;object-fit:contain;display:block}.bk-chip b{font-size:.74rem;font-weight:600;letter-spacing:-.01em;color:color-mix(in srgb,var(--accent) 82%,var(--ink))}.bk-chip-open{border-style:dashed;background:none}.bk-chip-open b{font-family:var(--font-mono);font-size:.66rem;font-weight:700;color:color-mix(in srgb,var(--accent) 70%,var(--muted))}.bk-core{position:relative;z-index:1;display:grid;justify-self:center;width:min(100%,380px);padding:5px;border-radius:var(--r-md, 12px);border:1px solid color-mix(in srgb,var(--blue) 30%,var(--line));background:var(--surface-raised);box-shadow:0 4px 16px #0f172a0f;min-width:0}.bk-roles{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.bk-role{--role: var(--blue);display:grid;gap:4px;justify-items:center;padding:5px 3px 6px;border-radius:var(--r-sm);border:1px solid color-mix(in srgb,var(--role) 26%,var(--line));background:color-mix(in srgb,var(--role) 5%,transparent);min-width:0}.bk-role[data-role=m]{--role: var(--role-m)}.bk-role[data-role=e]{--role: var(--role-e)}.bk-role[data-role=a]{--role: var(--role-a)}.bk-role-name{font-size:.62rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:color-mix(in srgb,var(--role) 86%,transparent);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.bk-slot{display:block;min-width:0;max-width:100%}.bk-slot-inner{display:flex;align-items:center;justify-content:center;gap:3px}.bk-pair-half{display:grid;place-items:center;width:30px;height:30px;border-radius:8px;border:1px solid color-mix(in srgb,var(--accent) 42%,transparent);background:var(--surface-raised);box-shadow:0 1px 3px #0f172a0d}.bk-slot-logo{width:19px;height:19px;object-fit:contain;display:block}.bk-pair-tie{width:4px;height:1px;flex:none;background:color-mix(in srgb,var(--role) 45%,transparent)}.bk-pair-half.is-in{animation:bk-swap .42s cubic-bezier(.2,.7,.3,1) both}@keyframes bk-swap{0%{opacity:0;transform:translateY(5px) scale(.96)}to{opacity:1;transform:none}}.backends.is-static .bk-link,.backends.is-static .bk-pair-half.is-in{animation:none}.backends.is-static .bk-lane{animation-play-state:paused}@media(max-width:520px){.backends-stage{gap:16px}.bk-rail-tag{display:none}.bk-chip{padding:4px 9px 4px 6px;gap:5px}.bk-chip img{flex-basis:15px;width:15px;height:15px}.bk-chip b{font-size:.66rem}.bk-pair-half{width:25px;height:25px;border-radius:7px}.bk-slot-logo{width:16px;height:16px}.bk-pair-tie{width:3px}.bk-role{padding:5px 3px 6px}}.scoreboard{position:relative;background:linear-gradient(180deg,transparent,color-mix(in srgb,var(--band) 55%,transparent) 26%,color-mix(in srgb,var(--band) 55%,transparent) 62%,transparent)}.scoreboard:after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:linear-gradient(90deg,transparent,var(--line) 22%,var(--line) 78%,transparent)}.sb-inner{max-width:var(--content-w);margin:0 auto;padding:var(--s2) var(--pad-x) var(--s6)}.sb-lead{display:flex;align-items:baseline;flex-wrap:wrap;gap:var(--s2) var(--s5);padding-bottom:var(--s4);margin-bottom:var(--s5);border-bottom:1px solid var(--line2)}.sb-kicker{font-size:.86rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--blue);white-space:nowrap}.sb-copy{margin:0;flex:1 1 30ch;font-size:.92rem;line-height:1.65;color:var(--body)}.sb-note{margin:var(--s5) 0 0;padding-top:var(--s4);border-top:1px solid var(--line);font-size:.8rem;line-height:1.6;color:var(--muted)}.section{max-width:var(--content-w);margin:0 auto;padding:var(--s7) var(--pad-x) var(--s6)}.band>.section:first-child{padding-top:var(--s7)}.video-section{padding-top:var(--s5);padding-bottom:var(--s6)}.video-intro{display:grid;grid-template-columns:86px 1fr;column-gap:var(--s5);align-items:start;max-width:var(--content-w);margin:0 auto var(--s5);padding-top:var(--s4);border-top:2px solid var(--ink2);text-align:left}.video-kicker{display:flex;flex-direction:column;align-items:flex-start;gap:var(--s1);color:var(--muted);font-size:.82rem;font-weight:700;line-height:1.2;letter-spacing:.1em;text-transform:uppercase;padding-top:2px;max-width:9ch}.video-kicker:before{content:"";width:clamp(26px,3vw,34px);height:clamp(26px,3vw,34px);margin-bottom:var(--s1);background:var(--blue);clip-path:polygon(16% 6%,92% 50%,16% 94%)}:root[data-theme=dark] .video-kicker:before{background:var(--blue-pale)}.section h2.video-title{margin:0;font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.14;letter-spacing:-.025em;max-width:38ch}@media(max-width:720px){.video-intro{grid-template-columns:1fr}.video-kicker{flex-direction:row;align-items:center;gap:var(--s3);max-width:none;margin-bottom:var(--s3)}.video-kicker:before{width:20px;height:20px;margin-bottom:0}.section h2.video-title{max-width:none}}.section-header{display:grid;grid-template-columns:86px 1fr;column-gap:var(--s5);align-items:start;padding-top:var(--s4);margin-bottom:var(--s6);border-top:2px solid var(--ink2);max-width:var(--content-w)}.section-eyebrow{grid-row:1 / span 3;display:flex;flex-direction:column;align-items:flex-start;gap:var(--s1);padding-top:2px}.eyebrow-num{font-family:var(--font-mono);font-size:clamp(2rem,3.4vw,2.7rem);font-weight:700;line-height:.9;letter-spacing:-.04em;color:var(--blue)}.eyebrow-name{font-size:.82rem;font-weight:700;line-height:1.2;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;max-width:9ch}.section h2{grid-column:2;font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.14;margin:0 0 var(--s3);letter-spacing:-.025em;max-width:44ch}.section-header .section-lede{grid-column:2}@media(max-width:720px){.section-header{grid-template-columns:1fr}.section-eyebrow{grid-row:auto;flex-direction:row;align-items:baseline;gap:var(--s3);margin-bottom:var(--s3)}.eyebrow-num{font-size:1.6rem}.eyebrow-name{max-width:none}.section h2{grid-column:1;max-width:none}.section-header .section-lede{grid-column:1}}.section-lede{font-size:1.05rem;line-height:1.68;color:var(--lede);max-width:var(--prose-w);margin:0}.section-lede strong{color:var(--ink2);font-weight:650}.section-lede code{overflow-wrap:anywhere}.band{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.band+.band{border-top:0}.band>.section+.section{padding-top:var(--s5)}.takeaway{display:grid;grid-template-columns:120px minmax(0,1fr) minmax(0,1fr);align-items:start;gap:var(--s3) var(--s5);margin-top:var(--s6);padding:var(--s5) 0 0;border-top:1px solid var(--line)}.takeaway-kicker{grid-row:1 / 3;margin:0;padding-top:5px;font-size:.72rem;font-weight:700;line-height:1.3;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}.takeaway-lead{margin:0;font-family:var(--font-serif);font-size:1.24rem;line-height:1.42;letter-spacing:-.015em;color:var(--ink2)}.takeaway-lead strong{font-weight:700}.takeaway-body{margin:0;font-size:.9rem;line-height:1.7;color:var(--body)}@media(max-width:900px){.takeaway{grid-template-columns:1fr}.takeaway-kicker{grid-row:auto;padding-top:0}}.problem-row{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--s6);margin-bottom:var(--s6);padding-top:var(--s4);border-top:1px solid var(--line)}.problem-card{position:relative;padding-left:0}.problem-icon{display:inline-flex;width:30px;height:30px;align-items:center;justify-content:center;border-radius:var(--r-sm);margin-bottom:var(--s3);color:var(--ctrl);background:color-mix(in srgb,var(--ctrl) 16%,transparent)}.problem-icon svg{width:17px;height:17px}.problem-card h3{margin:0 0 var(--s2);font-family:var(--font-sans);font-size:1rem;font-weight:650;letter-spacing:-.01em;color:var(--ink2)}.problem-card p{margin:0;font-size:.91rem;line-height:1.65;color:var(--muted)}.idea-figure{margin:var(--s5) 0 0}.idea-figure img{max-height:none}.idea-panels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s5) var(--s6);margin-top:var(--s5)}.idea-panel{display:grid;gap:6px;align-content:start;padding-left:var(--s4);border-left:2px solid color-mix(in srgb,var(--side-c) 55%,var(--line))}.idea-panel[data-side=before]{--side-c: var(--red, #c0392b)}.idea-panel[data-side=after]{--side-c: var(--blue)}.idea-panel-tag{font-family:var(--font-mono);font-size:.66rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:color-mix(in srgb,var(--side-c) 80%,var(--muted))}.idea-panel h3{margin:0;font-size:1.02rem;font-weight:650;letter-spacing:-.015em;color:var(--ink2)}.idea-panel p{margin:0;font-size:.93rem;line-height:1.7;color:var(--body)}@media(max-width:780px){.idea-panels{grid-template-columns:1fr}}.idea-statement{padding:var(--s1) 0 0 var(--s5);border-left:2px solid var(--blue);display:flex;flex-direction:column}.idea-statement h3{font-family:var(--font-serif);font-size:clamp(1.3rem,2.1vw,1.62rem);line-height:1.3;color:var(--ink2);margin:0 0 var(--s4);font-weight:600;letter-spacing:-.02em;text-wrap:nowrap}.idea-statement p{color:var(--body);font-size:.96rem;line-height:1.72;margin:0 0 auto;max-width:100ch}.idea-statement strong,.idea-statement b{color:var(--ink2);font-weight:650}@media(max-width:1080px){.idea-statement h3{text-wrap:balance}}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:var(--s6);border-top:1px solid var(--line)}.step{padding:var(--s5) var(--s5) 0 0;border-right:1px solid var(--line);position:relative}.step:last-child{border-right:0}.step:not(:first-child){padding-left:var(--s5)}.step strong{display:block;color:var(--ink2);font-size:.97rem;font-weight:650;line-height:1.4;margin-bottom:var(--s2)}.step p{font-size:.87rem;color:var(--muted);margin:0;line-height:1.6}.step:before{content:"";position:absolute;top:-1px;left:0;width:30px;height:2px;background:var(--blue)}.step:not(:first-child):before{left:var(--s5)}.loop-cycle{display:grid;grid-template-columns:1fr 300px 1fr;gap:var(--s5);align-items:center;margin:0}.loop-col{display:grid;gap:var(--s6);align-content:center;min-width:0}.loop-group{--role: var(--role-m);display:grid;gap:var(--s3);min-width:0}.loop-group[data-role=e]{--role: var(--role-e)}.loop-group[data-role=a]{--role: var(--role-a)}.loop-group-head{display:grid;grid-template-columns:26px auto;column-gap:var(--s2);align-items:center;padding-left:var(--s3);border-left:2px solid var(--role)}.loop-badge{grid-row:1 / 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4px;border-radius:4px;background:var(--chip-surface);color:var(--ink2)}.loop-ring{position:relative;width:300px;height:300px;justify-self:center;align-self:center}.loop-ring-svg{width:100%;height:100%;display:block;overflow:visible}.ring-track{fill:none;stroke:var(--line);stroke-width:1}.ring-arc{fill:none;stroke-width:2.5;stroke-linecap:butt}.arc-m{stroke:var(--role-m)}.arc-e{stroke:var(--role-e)}.arc-a{stroke:var(--role-a)}.ring-node{--role: var(--role-m);position:absolute;width:44px;height:44px;margin:-22px 0 0 -22px;display:grid;place-items:center;border-radius:50%;background:var(--role);color:var(--role-ink);font-family:var(--font-mono);font-size:1rem;font-weight:700;box-shadow:0 0 0 6px var(--paper);pointer-events:none}.ring-node b{font-weight:700;line-height:1}.ring-node i{position:absolute;font-style:normal;font-family:var(--font-sans);font-size:.72rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--role);white-space:nowrap}.node-m{--role: 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0;padding:var(--s4) var(--s5);border-left:2px solid var(--role);background:var(--surface-inset);border-radius:0 var(--r-sm) var(--r-sm) 0}.loop-close strong{display:block;color:var(--ink2);font-size:.94rem;font-weight:650;letter-spacing:-.01em;line-height:22px;margin-bottom:3px}.loop-close p{margin:0;font-size:.85rem;color:var(--body);line-height:1.6}.loop-close code{font-size:.86em;padding:1px 4px;border-radius:4px;background:var(--chip-surface);color:var(--ink2)}@media(max-width:980px){.loop-cycle{grid-template-columns:1fr;gap:var(--s5)}.loop-ring{order:-1;width:200px;height:200px}.loop-col-l .loop-group-head,.loop-col-l .loop-step{border-right:0;padding-right:0;padding-left:var(--s3);text-align:left}.loop-col-l .loop-group-head{border-left:2px solid var(--role);grid-template-columns:26px auto;justify-content:start}.loop-col-l .loop-badge{grid-column:1;grid-row:1 / 3}.loop-col-l .loop-group-name{grid-column:2;grid-row:1}.loop-col-l .loop-group-note{grid-column:2;grid-row:2}.loop-col-l .loop-step{border-left:2px solid color-mix(in srgb,var(--role) 34%,transparent);grid-template-columns:22px 1fr}.loop-col-l .loop-step>div{order:2}.loop-col-l .loop-step .loop-num{order:1}}.table-wrap{background:var(--surface-raised);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:var(--s5)}.table-scroll{overflow-x:auto}.results-table{width:100%;border-collapse:collapse;font-size:.9rem}.results-table thead th{padding:var(--s3) var(--s4) var(--s2);background:none;color:var(--muted);font-family:var(--font-sans);font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;text-align:right;white-space:nowrap;border-bottom:2px solid var(--line2)}.results-table thead th:first-child,.results-table thead th.th-text{text-align:left}.results-table tbody td{padding:11px var(--s4);border-top:1px solid var(--line);text-align:right;font-variant-numeric:tabular-nums;font-family:var(--font-mono);font-size:.86rem;font-weight:500;color:var(--ink2);white-space:nowrap;background:none}.results-table tbody tr:hover td{background:var(--surface-inset)}.results-table tbody td.model-cell,.results-table tbody td.harness-cell{text-align:left;font-family:var(--font-sans);font-size:.88rem}.results-table tbody td.model-cell{color:var(--ink2);font-weight:550}.results-table tbody td.harness-cell{color:var(--muted)}.results-table .col-key{font-size:.95rem;font-weight:650}.table-caption{font-size:.84rem;color:var(--muted);margin:var(--s3) var(--s4) var(--s4);line-height:1.6}.table-caption strong{color:var(--ink2)}.table-title{padding:var(--s4) var(--s4) var(--s2);font-size:.78rem;font-weight:700;color:var(--ink2);letter-spacing:.02em}.table-title span{color:var(--muted);font-weight:500}.results-table tbody tr.cited td{color:var(--ctrl);font-weight:400}.results-table tbody tr.cited td.model-cell{color:var(--muted);font-weight:500}.results-table tbody tr.cited td b{color:var(--muted);font-weight:700}.results-table tbody tr.best-row td{background:color-mix(in srgb,var(--blue) 8%,transparent);border-top-color:color-mix(in srgb,var(--blue) 30%,transparent);color:var(--ink2);font-weight:650}.results-table tbody tr.best-row td:first-child{box-shadow:inset 3px 0 0 var(--blue)}.results-table tbody tr.best-row:hover td{background:color-mix(in srgb,var(--blue) 12%,transparent)}.delta{display:inline-block;min-width:3.6em;font-family:var(--font-mono);font-size:.78rem;font-weight:650;text-align:right}.delta.up{color:var(--gain)}.delta.down{color:var(--loss)}.figure-block{margin:var(--s5) 0 0;padding:var(--s4) var(--s4) var(--s3);background:var(--surface-raised);border:1px solid var(--line);border-radius:var(--r-lg)}.figure-block img{display:block;width:auto;max-width:100%;max-height:620px;height:auto;margin-inline:auto;border-radius:var(--r-sm);background:#fff}.figure-block figcaption{margin:14px 2px 0;font-size:.84rem;line-height:1.6;color:var(--muted)}.figure-block figcaption b{color:var(--ink2);font-weight:600}.figure-block figcaption em{font-style:italic;color:var(--blue)}.figure-block figcaption code{font-size:.92em;background:var(--chip-surface);padding:1px 5px;border-radius:4px}.kpi-strip{list-style:none;margin:var(--s5) 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}.kpi{display:grid;grid-template-columns:1fr auto;align-items:baseline;align-content:center;gap:2px var(--s3);padding:var(--s4) var(--s5);background:var(--surface-raised);min-width:0}.kpi-bench{font-size:.9rem;font-weight:650;letter-spacing:-.01em;color:var(--ink2)}.kpi-metric{grid-column:1 / -1;font-size:.76rem;color:var(--muted);margin-bottom:var(--s2)}.kpi-num{display:flex;align-items:baseline;gap:var(--s2);font-family:var(--font-mono);font-variant-numeric:tabular-nums}.kpi-from{font-style:normal;font-size:1rem;color:var(--ctrl);text-decoration:line-through;text-decoration-thickness:1px}.kpi-from:after{content:"→";display:inline-block;margin-left:var(--s2);color:var(--ctrl);text-decoration:none}.kpi-to{font-size:1.72rem;font-weight:700;line-height:1;letter-spacing:-.02em;color:var(--blue-deep)}.kpi-delta{align-self:end;font-family:var(--font-mono);font-size:.86rem;font-weight:700;color:var(--gain);font-variant-numeric:tabular-nums}.plot-head{display:grid;align-content:center;gap:var(--s3);margin:0;padding-left:var(--s4);border-left:2px solid var(--blue);min-width:0}.plot-title{font-family:var(--font-serif);font-size:1.08rem;font-weight:700;letter-spacing:-.02em;line-height:1.3;color:var(--ink2)}.plot-note{font-size:.82rem;line-height:1.65;color:var(--body)}.plot-note b{color:var(--ink2);font-weight:650}.plot-note code{font-family:var(--font-mono);font-size:.9em;padding:1px 4px;border-radius:4px;background:var(--chip-surface);color:var(--ink2)}.fig-band{display:grid;gap:var(--s4);padding:var(--s5)}.fig-band>img{order:-1;width:100%;max-width:100%;max-height:none;margin:0;background:none}.fig-band .plot-head{display:grid;grid-template-columns:260px 1fr;gap:var(--s3) var(--s5);align-items:start;margin:0;padding-top:var(--s4);border-top:1px solid var(--line)}.fig-band .plot-title{padding-left:var(--s3);border-left:2px solid var(--blue)}@media(max-width:900px){.fig-band .plot-head{grid-template-columns:1fr}}.finding-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--s7);margin:var(--s5) 0;padding-top:var(--s5);border-top:1px solid var(--line)}.finding-value{display:block;font-family:var(--font-serif);font-size:2.6rem;font-weight:700;color:var(--ink2);line-height:1.1;margin-bottom:var(--s3);letter-spacing:-.03em}.finding-value em{font-family:var(--font-sans);font-size:.32em;font-style:normal;font-weight:500;color:var(--muted);letter-spacing:.02em;margin:0 4px 0 8px}.finding-value .finding-ref{font-size:.5em;font-weight:600;color:var(--ctrl)}.finding-title{display:block;font-size:1rem;font-weight:650;color:var(--ink2);margin-bottom:var(--s2);letter-spacing:-.01em}.finding-card p{font-size:.88rem;color:var(--muted);margin:0;line-height:1.65}.bibtex{position:relative;background:#f1f5f9;color:var(--ink2);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-sm);margin-bottom:26px}.bibtex pre{margin:0;padding:22px 24px;overflow-x:auto;font-family:JetBrains Mono,monospace;font-size:.85rem;line-height:1.7;color:var(--ink2)}.bibtex code{color:var(--ink2)}.bib-copy{position:absolute;top:12px;right:12px;padding:6px 12px;background:var(--surface-raised);color:var(--ink2);border:1px solid var(--line);border-radius:var(--r-pill);font-family:JetBrains Mono,monospace;font-size:.74rem;cursor:pointer;transition:background .15s ease,border-color .15s ease}.bib-copy:hover{background:var(--paper);border-color:#cbd5e1}.bib-copy.copied{background:#b0512a;border-color:#b0512a;color:#fff}.footer{max-width:var(--content-w);margin:32px auto 0;padding:36px 24px 56px;text-align:center;border-top:1px solid var(--line)}.footer p{font-size:.85rem;color:var(--muted);margin:0}.footer a{color:var(--blue)}@media(max-width:1200px)and (min-width:821px){.hero-inner{gap:30px}.hero-subtitle{font-size:.8rem;line-height:1.65}.backends{padding-top:12px;margin-top:12px}.qs-hint{font-size:.78rem}.quickstart pre{padding:clamp(9px,1.4vh,12px) 16px clamp(8px,1.2vh,10px)}.qs-hint{padding:clamp(8px,1.1vh,10px) 16px clamp(9px,1.3vh,11px)}}@media(max-width:820px){.hero-inner{grid-template-columns:1fr;gap:28px}}@media(max-width:980px){.hero{padding-top:40px}.idea-grid,.method-grid,.problem-row{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.section-header{grid-template-columns:1fr;gap:18px}.section-eyebrow{padding-top:16px}.nav{gap:12px;font-size:.85rem}.finding-grid{grid-template-columns:1fr}}@media(max-width:680px){.topbar{padding:8px 12px;gap:12px}.nav>a{display:none}.navmenu-label{display:none}.navmenu-btn{padding:5px 8px;gap:5px;min-height:32px}.navmenu-btn:before{content:"";width:13px;height:13px;flex:none;background:currentColor;-webkit-mask:var(--icon-list) center / contain no-repeat;mask:var(--icon-list) center / contain no-repeat}.navmenu-pop{position:fixed;top:54px;left:12px;right:12px;min-width:0;max-height:calc(100dvh - 78px);overflow-y:auto;-webkit-overflow-scrolling:touch}.navmenu-pop a{padding:10px;font-size:.92rem}.hero h1{font-size:2.6rem}.hero h1:after{display:none}.section{padding:48px 16px}.hero{padding:32px 16px 24px}.steps,.card-grid{grid-template-columns:1fr}.button{padding:9px 16px;font-size:.88rem}.hero-actions,.hero-artifacts{display:contents}.hero-lead{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(16px,2vh,22px) 10px;align-content:start}.hero-lead>*:not(.hero-actions):not(.hero-artifacts){grid-column:1 / -1}.hero-lead .button{justify-content:center;padding-inline:10px;min-width:0}.hero-lead .button>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.figure-block{padding:12px 12px 10px}}@media(max-width:380px){.hero-lead{grid-template-columns:1fr}}.theme-toggle{flex-shrink:0;width:32px;height:32px;display:grid;place-items:center;border-radius:var(--r-pill);border:1px solid var(--line);background:var(--chip-surface);color:var(--muted);cursor:pointer;transition:color .15s ease,border-color .15s ease,background .15s ease,transform .12s ease}.theme-toggle:hover{color:var(--ink2);border-color:var(--line2);transform:translateY(-1px)}.theme-toggle svg{width:17px;height:17px}.theme-toggle svg{display:none}.theme-toggle[data-theme-choice=system] .icon-system,.theme-toggle[data-theme-choice=light] .icon-sun,.theme-toggle[data-theme-choice=dark] .icon-moon{display:block}.theme-toggle[data-theme-choice=light],.theme-toggle[data-theme-choice=dark]{color:var(--blue);border-color:var(--blue)}:root[data-theme=dark] .button.brand:hover{color:color-mix(in srgb,var(--brand) 72%,white);border-color:color-mix(in srgb,var(--brand) 72%,white)}:root[data-theme=dark] .figure-block img,:root[data-theme=dark] .case-fig>img{background:#fff;padding:8px;border-radius:var(--r-sm);box-shadow:0 0 0 1px var(--line2)}:root[data-theme=dark] .navmenu-pop{box-shadow:0 16px 40px #0009,0 2px 8px #0006;border-color:var(--line2, #333845)}:root[data-theme=dark] .hero-subtitle,:root[data-theme=dark] .section-lede{color:var(--lede)}:root[data-theme=dark] .bibtex{background:var(--bib-bg)}:root[data-theme=dark] .bib-copy{background:var(--card);border-color:var(--line)}:root[data-theme=dark] .bib-copy:hover{background:var(--paper2);border-color:var(--line2)}:root[data-theme=dark] .bib-copy.copied{background:var(--blue);border-color:transparent;color:#08111c}:root[data-theme=dark] .loop-step code,:root[data-theme=dark] .loop-close code{background:var(--chip-surface)}.lang-toggle{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:32px;padding:0 10px;margin-left:4px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--card);color:var(--ink2);font:inherit;font-size:.78rem;font-weight:600;cursor:pointer;transition:background .2s ease,border-color .2s ease,color .2s ease}.lang-toggle:hover{background:var(--paper2, var(--card));border-color:var(--line2);color:var(--blue)}.lang-toggle .lang-label{line-height:1;letter-spacing:.02em}:root[data-theme=dark] .lang-toggle{background:var(--card);border-color:var(--line)}:root[data-theme=dark] .lang-toggle:hover{border-color:var(--line2)}#trajectories{--role-manager: #f59e0b;--role-gui: #0ea5e9;--role-cli: #10b981;--role-audit: var(--red);--role-agent: #6366f1}

/* ===================== spark-to-paper additions ===================== */
.sb-stats{display:grid;grid-template-columns:repeat(5,1fr);gap:var(--s4);margin:var(--s5) 0 0;padding:0;list-style:none}
.sb-stat{display:flex;flex-direction:column;gap:7px;padding:18px 20px;background:var(--surface-raised);border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-sm)}
.sb-stat i{width:34px;height:3px;border-radius:2px;background:var(--grad-1)}
.sb-stat b{font-family:var(--font-serif);font-size:clamp(26px,3vw,38px);font-weight:600;color:var(--ink2);line-height:1;font-variant-numeric:tabular-nums}
.sb-stat span{font-size:13px;color:var(--muted);line-height:1.35}
@media (max-width:980px){.sb-stats{grid-template-columns:repeat(3,1fr)}}
@media (max-width:640px){.sb-stats{grid-template-columns:repeat(2,1fr)}}

.paperstrip{overflow:hidden;margin-top:var(--s5);-webkit-mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask-image:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.paperstrip-lane{display:flex;gap:20px;width:max-content;animation:bk-run 70s linear infinite;will-change:transform}
.paperstrip:hover .paperstrip-lane{animation-play-state:paused}
@media (prefers-reduced-motion:reduce){.paperstrip-lane{animation:none}}
.paperstrip a{display:block;flex:0 0 auto}
.paperstrip img{width:186px;height:auto;display:block;background:#fff;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow-sm);transition:box-shadow .2s ease,transform .2s ease}
.paperstrip a:hover img{box-shadow:var(--shadow-md);transform:translateY(-3px)}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:var(--gap);margin-top:var(--s6)}
.paper-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--card-radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:box-shadow .22s ease,transform .22s ease}
.paper-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.paper-thumb{display:block;position:relative;aspect-ratio:5/4;overflow:hidden;background:#fff;border-bottom:1px solid var(--line)}
.paper-thumb img{width:100%;height:100%;object-fit:cover;object-position:top center;display:block}
.paper-meta{display:flex;flex-direction:column;gap:8px;padding:var(--pad-tight);flex:1}
.paper-domain{align-self:flex-start;font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--blue-on-tint);background:color-mix(in srgb,var(--blue) 11%,transparent);border-radius:var(--r-pill);padding:3px 10px}
.paper-title{font-family:var(--font-serif);font-size:16.5px;line-height:1.35;color:var(--ink2);font-weight:600;margin:0}
.paper-stats{font-family:var(--font-mono);font-size:11.5px;color:var(--muted);letter-spacing:.01em}
.paper-note{font-size:13.5px;color:var(--body);line-height:1.55;margin:0;flex:1}
.paper-link{margin-top:2px;font-size:13.5px;font-weight:600;color:var(--blue-on-tint);text-decoration:none}
.paper-link:hover{text-decoration:underline}

.plot-demo{display:grid;grid-template-columns:1.02fr 1.25fr 1.58fr;gap:var(--s4);align-items:stretch}
.plot-demo img{width:100%;height:auto;display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-sm);padding:8px}
@media (max-width:860px){.plot-demo{grid-template-columns:1fr}}

.bk-orch{display:flex;align-items:baseline;justify-content:center;gap:8px;padding:2px 4px 7px}
.bk-orch b{font-family:var(--font-mono);font-size:.72rem;font-weight:700;letter-spacing:.02em;color:var(--blue-deep)}
.bk-orch span{font-size:.62rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.bk-pair-half{width:auto;min-width:28px;height:26px;padding:0 9px}
.bk-slot-word{font-family:var(--font-mono);font-size:.64rem;font-weight:700;letter-spacing:-.01em;color:color-mix(in srgb,var(--accent) 78%,var(--ink));white-space:nowrap}
.kpi-strip:not(.kpi-stack){grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
#qs-pane-install .qs-code{white-space:pre-wrap;word-break:break-all}
#qs-pane-install{grid-template-rows:auto 1fr auto}
#qs-pane-install>.qs-alt{grid-area:1/1;align-self:start;justify-self:end;margin:10px 12px 0 0}
#qs-pane-install>pre{grid-area:2/1;padding-right:16px}
#qs-pane-install>.qs-hint{grid-area:3/1}
#qs-pane-install .qs-code{word-break:normal;overflow-wrap:anywhere}
.sb-kicker{white-space:normal}

/* ===================== visual polish round ===================== */
/* word-swap: keep the chip shell solid, crossfade only the word */
.bk-pair-half.is-in{animation:none}
.bk-pair-half.is-in .bk-slot-word{animation:bk-word .35s cubic-bezier(.2,.7,.3,1) both}
@keyframes bk-word{0%{opacity:.25;transform:translateY(4px)}100%{opacity:1;transform:none}}
.hero-actions,.hero-artifacts{max-width:36rem}
.hero-inner{align-items:center}
.sb-stat{padding:16px 20px}
.sb-stat b{font-size:clamp(30px,3.6vw,48px)}
.figure-block img{border-radius:var(--r-sm)}
.paperstrip img{height:248px;width:auto}
.kpi-num{white-space:nowrap}
.paper-thumb img[height="828"]{object-position:center 24%}
.finding-value.is-word{font-size:clamp(24px,2.4vw,34px)}
.bk-track{-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.video-kicker:before{clip-path:polygon(50% 0%,61% 39%,100% 50%,61% 61%,50% 100%,39% 61%,0% 50%,39% 39%)}
.bibtex pre{padding-right:84px}
.kpi-num .geq{font-family:var(--font-sans);font-size:.6em;vertical-align:.16em;margin-right:2px;font-weight:700}
/* zh typography: no synthetic CJK italics/serif-bold, roomier small text */
:root[data-lang=zh] em{font-style:normal}
:root[data-lang=zh] .hero-subtitle em{font-weight:650}
:root[data-lang=zh] .section h2,:root[data-lang=zh] .video-title,:root[data-lang=zh] .idea-statement h3,:root[data-lang=zh] .takeaway-lead,:root[data-lang=zh] .finding-value{font-family:Fraunces,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;letter-spacing:0}
:root[data-lang=zh] .section h2,:root[data-lang=zh] .video-title{line-height:1.3}
:root[data-lang=zh] .paper-note{line-height:1.7}
:root[data-lang=zh] .sb-stat span{line-height:1.5}
:root[data-lang=zh] .qs-hint{line-height:1.7}
:root[data-lang=zh] .hang-quote{text-indent:-.55em}
@media (max-width:640px){
  .sb-stats .sb-stat:last-child{grid-column:1/-1}
  .table-scroll{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 24px),transparent);mask-image:linear-gradient(90deg,#000 calc(100% - 24px),transparent)}
  .kpi-bench{white-space:nowrap}
  .loop-cycle .loop-ring{margin-top:24px}
}
@media (min-width:1100px){.gallery>.paper-card:last-child{grid-column:2}}

.cmp-table thead th:not(.th-text){text-align:center}.cmp-table td.cmp-yes,.cmp-table td.cmp-part,.cmp-table td.cmp-no{text-align:center;font-family:var(--font-sans);font-size:.95rem}.cmp-table .cmp-yes{color:var(--green)}.cmp-table .cmp-part{color:#c07f00}:root[data-theme=dark] .cmp-table .cmp-part{color:#e8b04b}.cmp-table .cmp-no{color:var(--ctrl)}

.hero-flags{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px} .hero-flag{display:inline-flex;align-items:center;gap:7px;padding:4px 12px;border-radius:var(--r-pill);border:1px solid var(--line2);background:var(--surface-raised);font-size:.78rem;font-weight:600;color:var(--body);white-space:nowrap;transition:border-color .15s ease,color .15s ease,transform .12s ease} .hero-flag:hover{transform:translateY(-1px);border-color:var(--blue-deep);color:var(--blue-deep)} .hero-flag b{font-family:var(--font-mono);font-size:.74rem;font-weight:700;color:var(--blue-deep);letter-spacing:.02em} .hero-flag.is-hf b{color:#c99700} :root[data-theme=dark] .hero-flag.is-hf b{color:#ffd21e} .sb-paper{margin-top:var(--s6);padding-top:var(--s4);border-top:1px solid var(--line)} .sb-paper-head{display:flex;align-items:baseline;flex-wrap:wrap;gap:var(--s2) var(--s5)} .sb-paper-sub{margin:0;flex:1 1 30ch;font-size:.85rem;line-height:1.6;color:var(--muted)} .kpi-strip.kpi-5{grid-template-columns:repeat(5,1fr)} .kpi-5 .kpi{padding:var(--s4)} .kpi-5 .kpi-to{font-size:1.5rem} @media(max-width:1100px){.kpi-strip.kpi-5{grid-template-columns:repeat(3,1fr)}} @media(max-width:720px){.kpi-strip.kpi-5{grid-template-columns:repeat(2,1fr)}.kpi-strip.kpi-5 .kpi:last-child{grid-column:1/-1}}

@media(prefers-reduced-motion:reduce){.hero h1:after{animation:none;opacity:1}}

.steps+.steps{margin-top:var(--s3)}

.section h2 em,.video-title em,.hero-paper-title em{font-style:normal;background:var(--grad-1);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats{list-style:none;display:flex;flex-wrap:wrap;gap:var(--s2) var(--s6);margin:4px 0 0;padding:14px 0 0;border-top:1px solid var(--line);max-width:32rem}
.hero-stats li{display:flex;flex-direction:column;gap:3px}
.hero-stats b{font-family:var(--font-mono);font-size:1.24rem;font-weight:700;letter-spacing:-.02em;color:var(--blue-deep);font-variant-numeric:tabular-nums;line-height:1}
.hero-stats span{font-size:.63rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.skill-wall{margin-top:var(--s5);padding:var(--s4) var(--s4) var(--s3);border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface-inset)}
.skill-wall-head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s2) var(--s4);flex-wrap:wrap;margin-bottom:var(--s3)}
.skill-wall-tag{font-family:var(--font-mono);font-size:.68rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.skill-wall-tag b{color:var(--blue-deep);font-size:.84rem}
.skill-wall-key{display:inline-flex;gap:var(--s4);flex-wrap:wrap}
.skill-wall-key>span{--role:var(--role-e);display:inline-flex;align-items:center;gap:6px;font-size:.66rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.skill-wall-key>span[data-role=m]{--role:var(--role-m)}
.skill-wall-key>span[data-role=a]{--role:var(--role-a)}
.skill-wall-key>span[data-role=o]{--role:var(--blue-deep)}
.skill-wall-key i{width:7px;height:7px;border-radius:50%;background:var(--role);flex:none}
.skill-chips{display:flex;flex-wrap:wrap;gap:7px}
.skill-chip{--role:var(--role-e);display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:var(--r-pill);border:1px solid color-mix(in srgb,var(--role) 36%,var(--line));background:var(--surface-raised);font-family:var(--font-mono);font-size:.76rem;font-weight:600;color:var(--ink);white-space:nowrap}
.skill-chip i{width:7px;height:7px;border-radius:50%;background:var(--role);flex:none}
.skill-chip[data-role=o]{--role:var(--blue-deep);background:color-mix(in srgb,var(--blue) 10%,var(--surface-raised));font-weight:700;color:var(--ink2)}
.skill-chip[data-role=m]{--role:var(--role-m)}
.skill-chip[data-role=a]{--role:var(--role-a)}
@media(max-width:640px){.hero-stats{gap:var(--s2) var(--s5)}.hero-stats b{font-size:1.1rem}.skill-chip{font-size:.7rem;padding:4px 10px}}