/* StepCAD additions on top of the Nerfies template (index.css + Bulma). */
:root {
  --policy: #3b7ddd;
  --policy-soft: #e8f0fc;
  --search: #0f9f86;
  --search-soft: #e3f5f1;
  --add: #22b35e;
  --rem: #e5484d;
  --ink: #363636;
  --muted: #7a7a7a;
  --line: #e6e6e6;
  --panel: #f5f5f5;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
html { scroll-behavior: smooth; }
.figure { max-width: 100%; border-radius: 8px; margin-bottom: 1rem; display: block; margin-left: auto; margin-right: auto; }
.caption { color: #4a4a4a; margin-bottom: .5rem; }
.zoomable { display: block; cursor: zoom-in; }

/* ---------- More Works dropdown (same pattern as CADBench) ---------- */
.more-works-container { position: fixed; top: 2rem; right: 2rem; z-index: 1000; }
.more-works-btn { display: inline-flex; align-items: center; gap: .5rem; background: #fff; color: var(--ink); border: 2px solid #dbdbdb; border-radius: 12px; padding: .75rem 1.25rem; font-weight: 600; font-size: .9rem; box-shadow: 0 4px 12px rgba(0,0,0,.08); cursor: pointer; transition: all .2s ease; font-family: 'Google Sans', sans-serif; }
.more-works-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.12); background: #fafafa; border-color: var(--search); }
.more-works-btn .dropdown-arrow { font-size: .8rem; transition: transform .2s ease; }
.more-works-btn[aria-expanded="true"] .dropdown-arrow { transform: rotate(180deg); }
.more-works-dropdown { position: absolute; top: calc(100% + .5rem); right: 0; width: 400px; max-width: 90vw; max-height: calc(100vh - 7rem); overflow-y: auto; background: #fff; border: 1px solid #dbdbdb; border-radius: 12px; box-shadow: 0 16px 40px rgba(0,0,0,.16); opacity: 0; visibility: hidden; transform: translateY(-10px); transition: all .2s ease; }
.more-works-dropdown.show { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-header { display: flex; justify-content: space-between; align-items: center; padding: 1.5rem 1.5rem 1rem; border-bottom: 1px solid #dbdbdb; }
.dropdown-header h4 { margin: 0; font-size: 1.1rem; font-weight: 700; color: var(--ink); }
.close-btn { background: none; border: none; color: var(--muted); cursor: pointer; padding: .5rem; border-radius: 8px; transition: all .2s ease; }
.close-btn:hover { background: #f5f5f5; color: var(--ink); }
.works-list { padding: 1rem; }
.work-item { display: flex; align-items: flex-start; justify-content: space-between; gap: .75rem; padding: 1rem; border-radius: 8px; color: inherit; transition: all .2s ease; margin-bottom: .5rem; }
.work-item:last-child { margin-bottom: 0; }
.work-item:hover { background: #f5f5f5; transform: translateX(4px); color: inherit; }
.work-info h5 { margin: 0 0 .35rem; font-size: 1rem; font-weight: 500; color: var(--ink); line-height: 1.4; }
.work-info .work-venue { margin: 0; font-size: .85rem; font-weight: 700; color: var(--search); }
.work-item .svg-inline--fa, .work-item > i { color: #b5b5b5; font-size: .9rem; margin-top: .2rem; flex-shrink: 0; }
@media screen and (max-width: 768px) {
  .more-works-container { top: auto; bottom: 2rem; right: 1rem; }
  .more-works-btn { padding: .6rem 1rem; font-size: .8rem; }
  .more-works-dropdown { top: auto; bottom: calc(100% + .5rem); right: 0; width: calc(100vw - 2rem); max-height: calc(100vh - 8rem); transform: translateY(10px); }
}

.button[disabled] { opacity: .55; cursor: default; }

/* ---------- interactive studio (teaser) ---------- */
.studio { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); gap: 0; background: var(--panel); border-radius: 10px; overflow: hidden; text-align: left; border: 1px solid var(--line); }
.studio-view { position: relative; min-height: 470px; background: radial-gradient(ellipse at 50% 38%, #ffffff 0%, #eef1f5 72%); }
#viewer { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; touch-action: pan-y; }
#viewer:active { cursor: grabbing; }
.hud { position: absolute; z-index: 2; display: flex; gap: 6px; }
.hud-tl { top: 12px; left: 12px; flex-wrap: wrap; max-width: calc(100% - 170px); }
.hud-tr { top: 12px; right: 12px; }
.hud-bl { bottom: 12px; left: 12px; }
.hud-br { bottom: 12px; right: 12px; }
.stage-tag, .op-tag { font-size: .78rem; font-weight: 700; padding: .25rem .7rem; border-radius: 999px; background: #fff; border: 1px solid var(--line); box-shadow: 0 1px 3px rgba(0,0,0,.06); }
.stage-tag { color: var(--policy); }
.stage-tag.s2 { color: var(--search); }
.op-tag { font-family: var(--mono); font-weight: 500; color: var(--ink); }
.iou-card { min-width: 132px; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: .45rem .75rem .6rem; box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.iou-card span { display: block; font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.iou-card b { display: block; font-size: 1.6rem; line-height: 1.15; font-variant-numeric: tabular-nums; color: var(--ink); font-family: 'Google Sans', sans-serif; }
.iou-bar { height: 4px; border-radius: 2px; background: #ececec; overflow: hidden; margin-top: 3px; }
.iou-bar i { display: block; height: 100%; width: 0; border-radius: 2px; background: var(--policy); transition: width .6s cubic-bezier(.2,.8,.2,1), background .3s; }
.iou-bar i.s2 { background: var(--search); }
.legend-3d { flex-direction: column; gap: 3px; font-size: .72rem; color: #4a4a4a; background: rgba(255,255,255,.82); border: 1px solid var(--line); border-radius: 8px; padding: .4rem .6rem; }
.legend-3d span { display: flex; align-items: center; gap: 6px; }
.legend-3d .sw { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.sw.ghost { background: transparent; border: 1.5px dashed #8a9bb8; }
.sw.policy { background: var(--policy); } .sw.search { background: var(--search); }
.sw.add { background: #f59e0b; } .sw.rem { background: rgba(229,72,77,.45); border: 1.5px solid var(--rem); }
.legend-3d .lg-search, .legend-3d .lg-add, .legend-3d .lg-rem { display: none; }
.legend-3d.s2 .lg-policy { display: none; }
.legend-3d.s2 .lg-search, .legend-3d.s2 .lg-add, .legend-3d.s2 .lg-rem { display: flex; }
.toggles label { cursor: pointer; }
.toggles input { position: absolute; opacity: 0; pointer-events: none; }
.toggles span { display: inline-block; font-size: .72rem; font-weight: 600; padding: .2rem .6rem; border-radius: 999px; color: var(--muted); background: #fff; border: 1px solid var(--line); transition: all .2s; }
.toggles input:checked + span { color: var(--ink); border-color: #b5b5b5; }
.toggles input:focus-visible + span { outline: 2px solid var(--search); outline-offset: 2px; }
.loading { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--muted); font-size: .9rem; transition: opacity .3s; z-index: 3; }
.loading span { width: 16px; height: 16px; border-radius: 50%; border: 2px solid #ddd; border-top-color: var(--search); animation: spin .8s linear infinite; }
.loading.done { opacity: 0; pointer-events: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.studio-side { display: flex; flex-direction: column; min-width: 0; background: #fff; border-left: 1px solid var(--line); max-height: 600px; }
.side-row { padding: .8rem 1rem; border-bottom: 1px solid var(--line); }
.side-row.grow { flex: 1; display: flex; flex-direction: column; min-height: 0; border-bottom: 0; padding-bottom: 0; }
.side-label { display: flex; justify-content: space-between; align-items: center; font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-weight: 700; margin-bottom: .5rem; }
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chips button { font: 600 .78rem 'Google Sans', sans-serif; color: #4a4a4a; background: #fff; border: 1px solid #dbdbdb; border-radius: 999px; padding: .25rem .7rem; cursor: pointer; transition: all .2s; }
.chips button:hover { border-color: #b5b5b5; }
.chips button[aria-selected="true"] { color: #fff; background: #363636; border-color: #363636; }
.play { width: 26px; height: 26px; border-radius: 50%; border: 1px solid #dbdbdb; background: #fff; color: var(--ink); display: grid; place-items: center; cursor: pointer; font-size: .65rem; }
.play .fa-play, .play.paused .fa-pause { display: none; }
.play.paused .fa-play { display: inline-block; }
.lane { display: grid; grid-template-columns: 68px 1fr; gap: 6px; align-items: center; margin-bottom: 5px; }
.lane-name { font-size: .68rem; font-weight: 700; white-space: nowrap; }
.lane-name.policy { color: var(--policy); } .lane-name.search { color: var(--search); }
.steps { list-style: none; margin: 0 !important; padding: 0; display: flex; gap: 3px; flex-wrap: wrap; }
.steps li { margin: 0 !important; }
.steps button { min-width: 26px; height: 24px; padding: 0 5px; font: 500 .68rem var(--mono); border-radius: 6px; cursor: pointer; border: 1px solid; transition: all .15s; }
.steps.p button { color: var(--policy); background: #fff; border-color: #c9dbf6; }
.steps.p button.done { background: var(--policy-soft); }
.steps.p button.cur { background: var(--policy); color: #fff; border-color: var(--policy); }
.steps.s button { color: var(--search); background: #fff; border-color: #b8e4da; }
.steps.s button.done { background: var(--search-soft); }
.steps.s button.cur { background: var(--search); color: #fff; border-color: var(--search); }
.steps button:focus-visible, .chips button:focus-visible, .play:focus-visible { outline: 2px solid var(--search); outline-offset: 2px; }
.chart { width: 100%; height: 90px; display: block; margin-top: 6px; overflow: visible; }
.chart text { font-family: 'Google Sans', sans-serif; }
.code { position: relative; flex: 1; margin: 0 -1rem !important; padding: .5rem 0 1rem !important; background: #1e2330 !important; color: #c9d4e8; font: .7rem/1.6 var(--mono) !important; overflow: auto; min-height: 150px; border-radius: 0 !important; white-space: pre !important; }
.code .blk { display: block; padding: 0 1rem; border-left: 3px solid transparent; opacity: .45; transition: opacity .3s, background .3s; }
.code .blk.cur { opacity: 1; background: rgba(59,125,221,.16); border-left-color: #6ea0ec; }
.code .blk.future { opacity: .15; }
.code .del { display: block; padding: 0 1rem; background: rgba(229,72,77,.16); border-left: 3px solid var(--rem); color: #ffb3b5; }
.code .ins { display: block; padding: 0 1rem; background: rgba(34,179,94,.16); border-left: 3px solid var(--add); color: #aef0c8; }
.code .ctx { display: block; padding: 0 1rem; opacity: .4; }
.code .hdr { display: block; white-space: normal; padding: .2rem 1rem .4rem; color: #8a96ad; font-style: italic; }
.code .k { color: #c792ea; } .code .n { color: #f7c56b; } .code .f { color: #82aaff; } .code .v { color: #7fdbca; }
.code .del .n, .code .ins .n { color: inherit; font-weight: 600; }
.teaser-cap { margin-top: 1.25rem; }
.teaser-note { display: block; margin-top: .5rem; font-size: .9rem; color: var(--muted); }
@media screen and (max-width: 900px) {
  .studio { grid-template-columns: 1fr; }
  .studio-view { min-height: 380px; }
  .studio-side { border-left: 0; border-top: 1px solid var(--line); max-height: none; }
  .code { max-height: 260px; }
}
@media screen and (max-width: 520px) {
  .studio-view { min-height: 330px; }
  .op-tag { display: none; }
  .hud-tl { max-width: calc(100% - 150px); }
  .iou-card { min-width: 112px; }
  .iou-card b { font-size: 1.3rem; }
  .legend-3d { font-size: .64rem; }
}

/* ---------- stats ---------- */
.stats-section { padding-top: 1rem; padding-bottom: 1rem; }
.stats .column { text-align: center; min-width: 150px; }
.stats b { display: block; font-family: 'Google Sans', sans-serif; font-size: 2rem; line-height: 1.1; color: var(--search); }
.stats span { display: block; font-size: .85rem; color: var(--muted); margin-top: .25rem; }

/* ---------- video ---------- */
.video-wrap { border-radius: 10px; overflow: hidden; background: #0b1220; margin-bottom: 1rem; }
.video-wrap video { display: block; width: 100%; }

/* ---------- method ---------- */
.stage-cols { margin-top: .5rem; text-align: left; }
.stage-card { height: 100%; background: var(--panel); border-radius: 10px; padding: 1.25rem 1.4rem; border-top: 4px solid var(--policy); }
.stage-card.search { border-top-color: var(--search); }
.stage-card .title { margin-bottom: .6rem !important; }
.stage-kicker { font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--policy); margin-bottom: .2rem; }
.stage-card.search .stage-kicker { color: var(--search); }
.edits { text-align: left; }
.edit { height: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 1rem; transition: box-shadow .2s, transform .2s; }
.edit:hover { box-shadow: 0 6px 18px rgba(0,0,0,.07); transform: translateY(-2px); }
.edit h5 { font-weight: 700; margin: .5rem 0 .25rem; color: var(--ink); }
.edit p { font-size: .88rem; color: var(--muted); }
.edit-ic { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: var(--search-soft); color: var(--search); }

/* ---------- panels / charts ---------- */
.panel-box { background: var(--panel); border-radius: 10px; padding: 1.2rem 1.3rem; text-align: left; height: 100%; }
.panel-box .title { margin-bottom: .2rem !important; }
.panel-sub { font-size: .88rem; color: var(--muted); margin-bottom: .9rem; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; flex-wrap: wrap; margin-bottom: .8rem; }
.panel-head .buttons { margin: 0; }
.panel-head .buttons .button { margin-bottom: 0; }
.panel-note { font-size: .88rem; color: #4a4a4a; margin-top: .8rem; min-height: 1.4em; }
.panel-box .tabs { margin-bottom: .9rem; }
.panel-box .tabs.is-toggle a { background: #fff; }
.panel-box .tabs.is-toggle li.is-active a { background: #363636; border-color: #363636; }
.split-tabs ul { flex-wrap: wrap; }
.split-tabs li { margin-bottom: 2px; }
.cov { display: grid; gap: 8px; }
.cov-row { display: grid; grid-template-columns: 66px 1fr; gap: 10px; align-items: center; font-size: .85rem; }
.cov-row > span { font-weight: 600; color: #4a4a4a; }
.cov-line { display: grid; grid-template-columns: 1fr 42px; gap: 6px; align-items: center; margin: 1px 0; }
.cov-line em { font-size: .7rem; font-style: normal; color: var(--muted); text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
.cov-line.a em { color: var(--search); }
.cov-bar { position: relative; height: 10px; border-radius: 5px; background: #e4e4e4; overflow: hidden; }
.cov-bar i { position: absolute; inset: 0 auto 0 0; width: 0; border-radius: 5px; transition: width .8s cubic-bezier(.2,.8,.2,1); }
.cov-bar.a i { background: var(--search); } .cov-bar.b i { background: #a5acb8; }
.chart-legend { display: flex; gap: 16px; margin-top: .8rem; font-size: .8rem; color: var(--muted); }
.chart-legend .lg::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.chart-legend .lg.a::before { background: var(--search); } .chart-legend .lg.b::before { background: #a5acb8; }
.dims { display: grid; gap: 1rem; }
.dim h6 { font-size: .85rem; font-weight: 700; color: #4a4a4a; margin-bottom: .35rem; }
.dim-row { display: grid; grid-template-columns: 88px 1fr 34px; gap: 8px; align-items: center; font-size: .78rem; color: var(--muted); margin-bottom: 3px; }
.dim-row .t { height: 8px; border-radius: 4px; background: #e4e4e4; overflow: hidden; }
.dim-row .t i { display: block; height: 100%; width: 0; background: #a5acb8; border-radius: 4px; transition: width .9s cubic-bezier(.2,.8,.2,1); }
.dim-row.me { color: var(--ink); font-weight: 700; }
.dim-row.me .t i { background: var(--search); }
.dim-row b { text-align: right; font-variant-numeric: tabular-nums; }
.bars { display: grid; gap: 8px; }
.bar-row { display: grid; grid-template-columns: 98px 1fr 52px; gap: 10px; align-items: center; font-size: .88rem; }
.bar-row .nm { font-weight: 600; color: #4a4a4a; white-space: nowrap; }
.bar-row .tr { height: 22px; border-radius: 6px; background: #e4e4e4; overflow: hidden; }
.bar-row .tr i { display: block; height: 100%; width: 0; border-radius: 6px; background: #a5acb8; transition: width .8s cubic-bezier(.2,.8,.2,1); }
.bar-row.pi .tr i { background: var(--policy); }
.bar-row.ours .tr i { background: var(--search); }
.bar-row.ours .nm, .bar-row.ours .val { color: var(--search); font-weight: 800; }
.bar-row .val { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; }
#gainChart svg { width: 100%; height: auto; overflow: visible; }
#gainChart text { font-family: 'Google Sans', sans-serif; fill: #7a7a7a; }
.ablation { margin-top: 1.5rem; height: auto; }
.stairs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; align-items: end; height: 280px; padding-top: 26px; }
.step { position: relative; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; }
.step .col { position: relative; height: 0; border-radius: 8px 8px 3px 3px; background: #a5acb8; transition: height 1s cubic-bezier(.2,.8,.2,1); display: flex; justify-content: center; }
.step .col b { margin-top: 8px; color: #fff; font-size: 1.1rem; font-weight: 800; font-family: 'Google Sans', sans-serif; }
.step.s1 .col, .step.s2 .col { background: #8fb4ec; } .step.s3 .col { background: var(--policy); } .step.s4 .col { background: var(--search); }
.step .lbl { margin-top: 8px; font-size: .82rem; line-height: 1.3; color: #4a4a4a; font-weight: 700; min-height: 3.6em; }
.step .lbl small { display: block; color: var(--muted); font-weight: 500; }
.step .delta { position: absolute; top: -22px; left: 50%; transform: translateX(-50%); font-size: .78rem; font-weight: 700; color: var(--search); white-space: nowrap; opacity: 0; transition: opacity .4s .8s; }
.stairs.in .delta { opacity: 1; }
@media screen and (max-width: 520px) { .stairs { gap: 5px; height: 240px; } .step .col b { font-size: .85rem; } .step .lbl { font-size: .68rem; } .bar-row { grid-template-columns: 80px 1fr 44px; font-size: .78rem; } }

/* ---------- ARCADE marquee ---------- */
.marquee { display: grid; gap: 12px; padding: .5rem 0 2rem; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-row { display: flex; gap: 12px; width: max-content; animation: marquee 70s linear infinite; }
.marquee-row.rev { animation-direction: reverse; animation-duration: 80s; }
.marquee:hover .marquee-row { animation-play-state: paused; }
.marquee-row div { width: 190px; height: 136px; flex: none; border-radius: 10px; background: var(--panel); padding: 8px; overflow: hidden; }
.marquee-row img { width: 100%; height: 100%; object-fit: contain; }
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee-row { animation: none; } }

/* ---------- applications ---------- */
.app { display: none; }
.app.on { display: block; }

/* ---------- bibtex ---------- */
.bib-wrap { position: relative; }
.copy-btn { position: absolute; top: .6rem; right: .6rem; }

/* ---------- lightbox ---------- */
.lightbox { position: fixed; inset: 0; z-index: 2000; background: rgba(10,10,10,.88); display: flex; align-items: center; justify-content: center; padding: 24px; cursor: zoom-out; }
.lightbox[hidden] { display: none; }
.lightbox img { max-width: 100%; max-height: 100%; background: #fff; border-radius: 8px; padding: 10px; }
.lightbox button { position: absolute; top: 14px; right: 20px; font-size: 32px; line-height: 1; color: #fff; background: none; border: 0; cursor: pointer; }

/* =================== custom visuals (method, ARCADE, gallery) =================== */
:root { --amber: #f59e0b; --k-sketch: #8b5cf6; --k-ccut: #ec4899; --k-refine: #0ea5e9; --k-skip: #64748b; }
.section-alt { background: #fafafa; }
.sub-title { margin-top: 2.5rem; margin-bottom: .4rem !important; }
.small-cap { font-size: .85rem; color: var(--muted); margin-top: .8rem; }
.sw-inline { display: inline-block; width: 11px; height: 11px; border-radius: 3px; vertical-align: -1px; margin: 0 4px 0 2px; }
.sw-inline.add { background: var(--amber); } .sw-inline.rem { background: rgba(229,72,77,.45); border: 1.5px solid var(--rem); }

/* stage headers */
.stage-head { display: flex; gap: 14px; align-items: flex-start; text-align: left; margin: 2.2rem 0 1rem; }
.stage-head h3 { font-family: 'Google Sans', sans-serif; font-size: 1.3rem; font-weight: 700; color: var(--ink); line-height: 1.25; }
.stage-head p { color: #4a4a4a; margin-top: .2rem; }
.stage-num { flex: none; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; color: #fff; font-weight: 800; font-family: 'Google Sans', sans-serif; font-size: 1.05rem; }
.stage-head.policy .stage-num { background: var(--policy); } .stage-head.search .stage-num { background: var(--search); }

/* Stage I loop diagram */
.loop-diagram { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr) minmax(0, 1fr); gap: 18px; align-items: center; background: var(--panel); border-radius: 12px; padding: 18px; text-align: left; }
.ld-col { display: flex; flex-direction: column; align-items: stretch; gap: 6px; min-width: 0; }
.ld-card { background: #fff; border-radius: 10px; border: 1px solid var(--line); padding: 8px 10px 6px; }
.ld-card img { display: block; width: 100%; height: 150px; object-fit: contain; }
.ld-card.state { border-color: #c9dbf6; box-shadow: 0 0 0 3px var(--policy-soft); }
.ld-card.state img { height: 250px; }
.ld-label { font-size: .75rem; font-weight: 700; color: #4a4a4a; display: flex; justify-content: space-between; gap: 6px; }
.ld-label em { font-family: 'Castoro', serif; font-weight: 400; }
.ld-step { color: var(--policy); }
.ld-iou { text-align: right; font-size: .78rem; color: var(--muted); }
.ld-iou b { color: var(--policy); font-size: 1rem; font-variant-numeric: tabular-nums; }
.ld-arrow { font-size: .7rem; color: var(--muted); text-align: center; position: relative; padding: 2px 0; }
.ld-arrow::before { content: ""; display: block; margin: 0 auto 2px; width: 2px; height: 14px; background: #c5ccd6; }
.ld-mid { display: flex; flex-direction: column; gap: 8px; align-items: stretch; position: relative; min-width: 0; }
.ld-chip { text-align: center; font-size: .8rem; font-weight: 700; padding: .55rem .7rem; border-radius: 9px; color: #fff; }
.ld-chip small { display: block; font-weight: 500; font-size: .75rem; opacity: .9; margin-top: 2px; }
.ld-chip.enc { background: #5b6b86; }
.ld-chip.llm { background: var(--policy); padding: .8rem .7rem; }
.ld-chip.exec { background: #2c3a50; }
.ld-tokens { display: flex; justify-content: center; align-items: center; gap: 3px; }
.ld-tokens i { width: 12px; height: 12px; border-radius: 3px; background: #9aa9c2; }
.ld-tokens i.s { background: #7fa6e6; }
.ld-tokens b { color: var(--muted); font-size: .8rem; margin: 0 4px; }
.ld-code { margin: 0 !important; background: #1e2330 !important; color: #c9d4e8; font: .66rem/1.55 var(--mono) !important; padding: .55rem .7rem !important; border-radius: 8px; white-space: pre; overflow: hidden; text-overflow: ellipsis; min-height: 5.6em; max-width: 100%; }
.ld-code .f { color: #82aaff; } .ld-code .n { color: #f7c56b; } .ld-code .v { color: #7fdbca; }
.loop-diagram.pulse .ld-chip.llm { animation: llmPulse .9s ease; }
.loop-diagram.pulse .ld-card.state img { animation: popIn .5s ease; }
@keyframes llmPulse { 30% { box-shadow: 0 0 0 6px rgba(59,125,221,.25); } }
@keyframes popIn { from { opacity: .35; transform: scale(.97); } }
@media screen and (max-width: 900px) {
  .loop-diagram { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .ld-mid { grid-column: 1 / -1; order: 3; }
  .ld-card.state img { height: 180px; }
}
@media screen and (max-width: 520px) { .loop-diagram { grid-template-columns: minmax(0, 1fr); } .ld-card img { height: 120px; } }

/* filmstrip */
.filmstrip { display: flex; gap: 5px; margin-top: 12px; overflow-x: auto; padding-bottom: 4px; align-items: stretch; }
.fs-item { flex: 1 1 0; min-width: 0; background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 6px 6px 5px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 2px; transition: border-color .2s, box-shadow .2s, transform .2s; font-family: 'Google Sans', sans-serif; }
.fs-item img { width: 100%; height: 84px; object-fit: contain; }
.fs-item:hover { transform: translateY(-2px); }
.fs-item.on { border-color: var(--policy); box-shadow: 0 0 0 3px var(--policy-soft); }
.fs-item.final { border-color: #b8e4da; cursor: default; }
.fs-op { font-size: .62rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 100%; color: #4a4a4a; font-family: var(--mono); }
.fs-iou { font-size: .8rem; font-weight: 700; color: var(--policy); font-variant-numeric: tabular-nums; }
.fs-item.final .fs-iou { color: var(--search); }
.fs-sep { flex: none; display: flex; align-items: center; }
.fs-sep span { font-size: .65rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--search); writing-mode: vertical-rl; transform: rotate(180deg); border-left: 2px dashed #b8e4da; padding-left: 3px; }

/* Stage II search tree */
.search-row { margin-top: 0; }
.tree-box { padding-bottom: .8rem; }
.tree-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: .4rem; }
.tree-head .title { margin: 0 !important; }
.kind-legend { display: flex; flex-wrap: wrap; gap: 4px 10px; font-size: .72rem; color: #4a4a4a; }
.kind-legend i { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 4px; vertical-align: 0; }
.search-tree svg { width: 100%; height: auto; display: block; overflow: visible; }
.search-tree .gl { stroke: #e3e3e3; }
.search-tree .ax { font-size: 10px; fill: #9a9a9a; font-family: 'Google Sans', sans-serif; }
.search-tree .opl { font-size: 10.5px; fill: #4a4a4a; font-weight: 700; font-family: 'Google Sans', sans-serif; }
.search-tree .opn { font-size: 9.5px; fill: #8a8a8a; font-family: var(--mono); }
.search-tree .edge { stroke: #cfd5de; stroke-width: 1; }
.search-tree .edge.kept { stroke: #9fd9cc; stroke-width: 1.6; }
.search-tree .edge.hi { stroke: #363636; stroke-width: 2; }
.search-tree .best { fill: none; stroke: var(--search); stroke-width: 2.6; stroke-linejoin: round; opacity: .9; }
.search-tree .cand { stroke: #fff; stroke-width: 1.2; cursor: pointer; opacity: .55; transition: opacity .15s, r .15s; }
.search-tree .cand.kept { opacity: 1; stroke-width: 2; }
.search-tree .cand.top { stroke: var(--search); stroke-width: 2.5; }
.search-tree .cand.hi { opacity: 1; stroke: #363636; stroke-width: 2.2; }
.search-tree .endl { font-size: 12px; font-weight: 800; fill: var(--search); font-family: 'Google Sans', sans-serif; }
.edit-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; height: 100%; }
.edit-card { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: .6rem .65rem .55rem; text-align: left; }
.ec-head { display: flex; align-items: center; gap: 6px; font-size: .8rem; }
.ec-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.ec-d { margin-left: auto; color: var(--search); font-weight: 700; font-size: .72rem; white-space: nowrap; }
.ec-pair { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 2px; margin: .3rem 0; }
.ec-pair img { width: 100%; aspect-ratio: 5 / 4; object-fit: contain; }
.ec-pair span { color: #b5b5b5; font-size: .8rem; }
.edit-card p { font-size: .72rem; color: var(--muted); line-height: 1.4; }
@media screen and (max-width: 520px) { .edit-cards { grid-template-columns: 1fr; } }

/* ARCADE trajectory + ops */
.traj-view { position: relative; background: radial-gradient(ellipse at 50% 45%, #fff 0%, #eef1f5 75%); border-radius: 10px; }
.traj-view img { display: block; width: 100%; aspect-ratio: 5 / 4; object-fit: contain; }
.traj-op, .traj-step { position: absolute; top: 10px; font-size: .75rem; font-weight: 700; padding: .2rem .6rem; border-radius: 999px; background: #fff; border: 1px solid var(--line); }
.traj-op { left: 10px; font-family: var(--mono); font-weight: 500; }
.traj-step { right: 10px; color: var(--muted); font-variant-numeric: tabular-nums; }
.traj-slider { width: 100%; margin: .7rem 0 .5rem; accent-color: #e8913a; }
.traj-code { max-width: 100%; margin: 0 !important; background: #1e2330 !important; color: #c9d4e8; font: .68rem/1.55 var(--mono) !important; padding: .55rem .8rem !important; border-radius: 8px; white-space: pre; overflow-x: auto; min-height: 7.2em; }
.traj-code .f { color: #82aaff; } .traj-code .n { color: #f7c56b; } .traj-code .v { color: #7fdbca; }
.traj-box .panel-head .tabs { margin: 0; }
.ops-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.op-tile { margin: 0; background: #fff; border-radius: 10px; border: 1px solid var(--line); padding: 6px 4px 5px; text-align: center; transition: transform .2s, box-shadow .2s; }
.op-tile:hover { transform: translateY(-2px); box-shadow: 0 6px 14px rgba(0,0,0,.07); }
.op-tile img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.op-tile figcaption { font-size: .72rem; font-weight: 700; color: #4a4a4a; text-transform: capitalize; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 1rem 0 1.5rem; }
.g-card { position: relative; border: 1px solid var(--line); border-radius: 12px; background: #fff; padding: 8px 8px 6px; cursor: pointer; font-family: 'Google Sans', sans-serif; transition: box-shadow .2s, transform .2s; }
.g-card:hover { box-shadow: 0 8px 22px rgba(0,0,0,.08); transform: translateY(-2px); }
.g-imgs { position: relative; display: block; aspect-ratio: 1; background: radial-gradient(ellipse at 50% 45%, #fff 0%, #f1f3f6 80%); border-radius: 8px; }
.g-imgs img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; transition: opacity .35s ease; }
.g-in { opacity: 0; }
.g-card:hover .g-in, .g-card.flip .g-in { opacity: 1; }
.g-card:hover .g-out, .g-card.flip .g-out { opacity: 0; }
.g-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 5px; font-size: .75rem; }
.g-lab i { font-style: normal; font-weight: 700; }
.g-lab .in { display: none; color: #7a7a7a; } .g-lab .out { color: var(--search); }
.g-card:hover .g-lab .in, .g-card.flip .g-lab .in { display: inline; }
.g-card:hover .g-lab .out, .g-card.flip .g-lab .out { display: none; }
.g-iou { color: #4a4a4a; font-variant-numeric: tabular-nums; font-weight: 700; }
@media screen and (max-width: 900px) { .gallery { grid-template-columns: repeat(3, 1fr); } }
@media screen and (max-width: 560px) { .gallery { grid-template-columns: repeat(2, 1fr); } .ops-grid { grid-template-columns: repeat(4, 1fr); } }
.split-tabs { white-space: normal; overflow: visible; }
.split-tabs ul { flex-wrap: wrap; flex-shrink: 1; border-bottom: 0; }
.split-tabs li { flex: 1 0 auto; }
.split-tabs li a { justify-content: center; }
.split-tag { flex-basis: 100%; font-size: .72rem; font-weight: 700; color: #4a4a4a; letter-spacing: .02em; }
.ec-split { font-size: .68rem; color: var(--muted); margin-top: 1px; }
.g-split { display: block; text-align: left; font-size: .68rem; color: var(--muted); margin-top: 1px; }
.work-item.all-pubs { border-top: 1px solid #ededed; border-radius: 0 0 8px 8px; margin-top: .25rem; }
.work-item.all-pubs h5 { font-weight: 700; }
.work-item.all-pubs .work-venue { color: #7a7a7a; font-weight: 600; }

/* Per-site accent: author names and the More Works dropdown use this site's colour. */
:root { --site-accent: #0b8a74; }
.publication-authors a { color: var(--site-accent) !important; }
.more-works-btn:hover { border-color: var(--site-accent); }
.work-info .work-venue { color: var(--site-accent); }