/* Product replica on the home page. Mirrors apps/web: 3-column shell, accent nav, timeline, workspace panel. */
.app { margin: 20px auto 0; max-width: 1180px; border: 1px solid var(--border-strong); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--shadow-4); overflow: hidden; text-align: left; position: relative; }
.chrome { display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 14px; border-bottom: 1px solid var(--border); background: var(--surface-subtle); }
.chrome i { width: 11px; height: 11px; border-radius: 50%; background: var(--border-strong); }
.chrome .url { margin: 0 auto; padding: 2px 44px; border-radius: 6px; background: var(--surface); border: 1px solid var(--border); color: var(--text-faint); font: 12px var(--mono); }
.shell { display: grid; grid-template-columns: 216px minmax(0, 1fr) 262px; height: 660px; }
.app button { font: inherit; color: inherit; }
.app svg { flex: none; }

/* sidebar */
.sb { display: flex; flex-direction: column; min-height: 0; padding: 16px 12px 12px; border-right: 1px solid var(--border); background: var(--surface-subtle); overflow: hidden; }
.sb-brand { display: flex; align-items: center; gap: 10px; padding: 0 6px 16px; }
.sb-brand .brand-mark { width: 32px; height: 32px; border-radius: 9px; }
.sb-brand strong { display: block; color: var(--text-strong); font-size: 14px; line-height: 1.2; }
.sb-brand small { color: var(--muted); font-size: 11px; }
.sb-label { display: flex; align-items: center; gap: 6px; padding: 8px 6px 6px; color: var(--muted); font-size: 11.5px; font-weight: 650; letter-spacing: .04em; }
.sb-label .n { margin-left: auto; font-variant-numeric: tabular-nums; }
.sb-item { display: grid; grid-template-columns: 18px minmax(0, 1fr); align-items: center; gap: 9px; width: 100%; min-height: 36px; margin-bottom: 2px; padding: 6px 10px; border: 0; border-radius: 9px; background: transparent; color: var(--text-secondary); text-align: left; cursor: pointer; font-size: 13px; }
.sb-item span:last-child { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.sb-item:hover { background: var(--surface-hover); color: var(--text-strong); }
.sb-item.active { background: var(--accent-softer); color: var(--accent-deep); font-weight: 650; }
.sb-item .ic { color: var(--text-faint); display: grid; place-items: center; }
.sb-item.active .ic { color: var(--accent); }
.sb-item .kbd { margin-left: auto; padding: 0 5px; border: 1px solid var(--border); border-radius: 5px; color: var(--text-faint); font-size: 10.5px; }
.sb-spacer { flex: 1; }
.sb-bottom { border-top: 1px solid var(--border); padding-top: 8px; }
.sb-bottom .sb-item { grid-template-columns: 18px minmax(0, 1fr) auto; cursor: default; }
.sb-bottom .cnt { color: var(--text-faint); font-size: 11px; }

/* main column */
.main { min-width: 0; min-height: 0; display: flex; flex-direction: column; background: var(--surface); }
.topline { display: flex; align-items: center; gap: 10px; height: 46px; flex: none; padding: 0 20px; border-bottom: 1px solid var(--border); font-size: 12.5px; color: var(--muted); }
.topline b { color: var(--text-strong); font-size: 13px; }
.topline .sp { flex: 1; }
.usage { padding: 3px 9px; border: 1px solid var(--border); border-radius: 7px; font-size: 10.5px; font-weight: 650; letter-spacing: .04em; color: var(--muted); }
.usage b { margin-left: 5px; color: var(--text-strong); font-size: 12px; font-variant-numeric: tabular-nums; }
.dot-ok { width: 8px; height: 8px; border-radius: 50%; background: var(--success-bright); }
.scroll { flex: 1; min-height: 0; overflow-y: auto; padding: 22px 26px 12px; scroll-behavior: smooth; }
.empty { padding: 34px 6px; }
.empty .kick { color: var(--accent-ink); font-size: 12px; font-weight: 650; }
.empty h2 { margin: 4px 0 8px; color: var(--text-strong); font-size: 30px; letter-spacing: -.02em; }
.empty p { margin: 0; color: var(--muted); }

/* timeline */
.tl { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 0 12px; padding-bottom: 12px; animation: rise .3s ease; }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.tl-rail { position: relative; display: flex; justify-content: center; }
.tl-rail::before { content: ""; position: absolute; top: 20px; bottom: -14px; width: 1px; background: var(--border); }
.tl:last-child .tl-rail::before { display: none; }
.tl-dot { z-index: 1; margin-top: 7px; width: 22px; height: 22px; display: grid; place-items: center; border: 1px solid var(--border-strong); border-radius: 50%; background: var(--surface); color: var(--muted); }
.tl-dot.user { border-color: var(--accent-border); background: var(--accent-softer); color: var(--accent); }
.tl-dot.ok { border-color: var(--success-bright); background: var(--success-soft); color: var(--success); }
.tl-body { min-width: 0; font-size: 13.5px; }
.bubble { display: inline-block; max-width: 100%; padding: 9px 14px; border: 1px solid var(--accent-border-soft); border-radius: 12px; background: var(--accent-softer); color: var(--accent-deep); }
.say { padding: 6px 0; color: var(--text); }
.say b { color: var(--text-strong); }
.card-x { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-1); overflow: hidden; }
.card-x + .card-x { margin-top: 8px; }
.tool-h { display: flex; align-items: center; gap: 9px; padding: 9px 12px; cursor: pointer; font-size: 12.5px; }
.tool-h:hover { background: var(--surface-subtle); }
.tool-h .tn { font: 600 12.5px var(--mono); color: var(--text-heading); }
.tool-h .ta { min-width: 0; flex: 1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; color: var(--muted); }
.tool-h .ts { color: var(--success); font-weight: 600; font-size: 12px; white-space: nowrap; }
.tool-h .ts.run { color: var(--accent); }
.tool-h .chev { color: var(--text-faint); transition: transform .15s; }
.card-x.open .chev { transform: rotate(90deg); }
.tool-b { display: none; padding: 10px 12px 12px; border-top: 1px solid var(--border); background: var(--surface-sunk); font-size: 12.5px; color: var(--text-secondary); }
.card-x.open .tool-b { display: block; }
.tool-b pre { margin: 6px 0 0; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font: 12px/1.55 var(--mono); overflow-x: auto; white-space: pre; }
.spin { width: 13px; height: 13px; border: 2px solid var(--accent-tint); border-top-color: var(--accent); border-radius: 50%; animation: spin .8s linear infinite; flex: none; }
@keyframes spin { to { transform: rotate(360deg); } }
.badge { padding: 0 7px; border-radius: 99px; background: var(--success-soft); color: var(--success); font-size: 10.5px; font-weight: 650; white-space: nowrap; }
.badge.blue { background: var(--accent-softer); color: var(--accent-deep); }
.badge.warn { background: var(--warning-soft); color: var(--warning); }
.plan { padding: 11px 14px; }
.plan h5 { margin: 0 0 6px; color: var(--muted); font-size: 11px; letter-spacing: .05em; }
.plan li { display: flex; align-items: center; gap: 9px; margin: 3px 0; list-style: none; color: var(--text-secondary); font-size: 13px; }
.plan ul { margin: 0; padding: 0; }
.plan .cb { width: 15px; height: 15px; display: grid; place-items: center; border: 1.5px solid var(--border-strong); border-radius: 50%; color: #fff; }
.plan li.doing .cb { border-color: var(--accent); }
.plan li.doing { color: var(--text-strong); font-weight: 600; }
.plan li.done .cb { border-color: var(--success-bright); background: var(--success-bright); }
.plan li.done { color: var(--muted); }
.final { padding: 12px 14px; }
.final p { margin: 0 0 8px; }
.bars { display: grid; gap: 7px; margin: 10px 0 4px; }
.barrow { display: grid; grid-template-columns: 138px minmax(0, 1fr) 34px; align-items: center; gap: 10px; font-size: 12px; color: var(--text-secondary); }
.barrow .lb { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.barpair { display: grid; gap: 2px; }
.barpair i { display: block; height: 7px; border-radius: 4px; width: 0; transition: width .7s ease; }
.barpair i.a { background: var(--accent); }
.barpair i.p { background: var(--teal); }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 6px; color: var(--muted); font-size: 11.5px; }
.legend i { display: inline-block; width: 9px; height: 9px; margin-right: 5px; border-radius: 50%; vertical-align: -1px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.chip { padding: 2px 10px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface); color: var(--text-secondary); font-size: 12px; cursor: pointer; }
.chip:hover { border-color: var(--accent-border-soft); color: var(--accent-strong); }
.chip.on { border-color: var(--accent-border); background: var(--accent-softer); color: var(--accent-deep); font-weight: 600; }

/* research cards (idea tree / evolve / memory) */
.rc { border: 1px solid var(--border); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow-1); overflow: hidden; }
.rc-h { display: flex; align-items: flex-start; gap: 12px; padding: 12px 14px 8px; }
.rc-h .kick { color: var(--accent-ink); font-size: 11.5px; font-weight: 650; }
.rc-h h4 { margin: 1px 0 0; color: var(--text-strong); font-size: 14px; line-height: 1.35; }
.rc-h .sp { flex: 1; }
.rc-h .ctl { display: flex; gap: 6px; flex: none; }
.rc-stats { display: flex; flex-wrap: wrap; gap: 4px 22px; padding: 2px 14px 10px; }
.rc-stats div { font-size: 11px; color: var(--muted); }
.rc-stats b { display: block; color: var(--text-strong); font-size: 14px; font-variant-numeric: tabular-nums; }
.rc-tabs { display: flex; gap: 6px; padding: 0 14px 10px; }
.rc-tabs button, .btn-s { padding: 4px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-secondary); font-size: 12.5px; cursor: pointer; }
.rc-tabs button.on { border-color: var(--accent); background: var(--accent); color: #fff; font-weight: 600; }
.btn-s:hover { border-color: var(--accent-border-soft); color: var(--accent-strong); background: var(--accent-soft); }
.btn-s:disabled { opacity: .5; cursor: not-allowed; }
.btn-s.primary { border-color: var(--accent); background: var(--accent); color: #fff; font-weight: 600; }
.btn-s.primary:hover { background: var(--accent-strong); color: #fff; }
.rc-b { display: grid; grid-template-columns: minmax(0, 1fr) 232px; gap: 10px; padding: 0 12px 12px; }
.rc-b.one { grid-template-columns: minmax(0, 1fr); }
.plot { border: 1px solid var(--border); border-radius: 10px; background: var(--surface-subtle); overflow: hidden; }
.plot svg { display: block; width: 100%; height: auto; }
.side { border: 1px solid var(--border); border-radius: 10px; background: var(--surface-subtle); padding: 10px 12px; font-size: 12px; color: var(--text-secondary); min-width: 0; }
.side h5 { margin: 0 0 6px; color: var(--text-heading); font-size: 12px; }
.pipe { max-height: 268px; overflow-y: auto; }
.prow { display: grid; grid-template-columns: 26px 44px minmax(0, 1fr) auto; align-items: baseline; gap: 6px; padding: 4px 4px; border-radius: 6px; cursor: pointer; }
.prow:hover, .prow.sel { background: var(--accent-softer); }
.prow b { color: var(--text-strong); font-size: 12.5px; }
.prow .fr { color: var(--text-faint); font-size: 11px; }
.prow .sc { font-variant-numeric: tabular-nums; color: var(--text-strong); font-weight: 600; }
.prow .nb { grid-column: 3 / 5; margin-top: -3px; font-size: 10.5px; color: var(--text-faint); }
.prow .nb.best { color: var(--success); font-weight: 650; }
.tbl { width: 100%; border-collapse: collapse; font-size: 12px; }
.tbl th, .tbl td { padding: 4px 8px; border-bottom: 1px solid var(--border); text-align: left; font-variant-numeric: tabular-nums; }
.tbl th { color: var(--muted); font-weight: 600; }
.dim { display: grid; grid-template-columns: 70px minmax(0, 1fr) 30px; align-items: center; gap: 8px; margin: 5px 0; }
.dim .b { height: 6px; border-radius: 4px; background: var(--surface-track); overflow: hidden; }
.dim .b i { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--accent); transition: width .6s ease; }
.dim em { font-style: normal; text-align: right; color: var(--text-strong); font-variant-numeric: tabular-nums; }

/* svg */
.g-edge { stroke: var(--edge); fill: none; }
.g-lbl { fill: var(--text-secondary); stroke: var(--node-halo); stroke-width: 4px; paint-order: stroke; font-size: 10.5px; }
.g-axis { fill: var(--text-faint); font-size: 10px; }
.g-grid { stroke: var(--border); }
.g-base { stroke: var(--text-faint); stroke-dasharray: 4 4; }
.gnode { cursor: pointer; transition: opacity .2s; }
.gnode circle { transition: fill .3s, r .3s; }
.gnode:hover circle { stroke: var(--accent-deep); stroke-width: 2.5; }
.gnode.sel circle { stroke: #f59e0b; stroke-width: 3; }
.gnode.pulse circle { animation: pulse 1s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .45; } }
.gnode.ghost circle { fill: var(--surface-track) !important; stroke: var(--border-strong); stroke-dasharray: 3 3; }

/* workspace column */
.ws { min-height: 0; overflow-y: auto; padding: 14px 14px 12px; border-left: 1px solid var(--border); background: var(--surface-subtle); }
.ws-h { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.ws-h h3 { margin: 0; color: var(--text-strong); font-size: 15px; }
.ws-h .sp { flex: 1; }
.pill-n { padding: 0 8px; border: 1px solid var(--border); border-radius: 99px; background: var(--surface); font-size: 11.5px; color: var(--text-secondary); font-variant-numeric: tabular-nums; }
.drop { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; padding: 9px 11px; border: 1px dashed var(--border-strong); border-radius: 10px; background: var(--surface); color: var(--muted); font-size: 11.5px; }
.drop b { color: var(--text-heading); font-size: 12px; }
.acc { margin-bottom: 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.acc-h { display: flex; align-items: center; gap: 8px; width: 100%; padding: 9px 11px; border: 0; background: transparent; text-align: left; cursor: pointer; font-size: 12.5px; font-weight: 650; color: var(--text-strong); }
.acc-h .n { margin-left: auto; color: var(--text-secondary); font-size: 11.5px; font-weight: 600; font-variant-numeric: tabular-nums; }
.acc-h .chev { color: var(--text-faint); transition: transform .15s; }
.acc.open > .acc-h .chev { transform: rotate(90deg); }
.acc-b { display: none; padding: 2px 8px 8px; }
.acc.open > .acc-b { display: block; }
.file-r { display: flex; align-items: center; gap: 8px; width: 100%; padding: 6px 6px; border: 0; border-radius: 7px; background: transparent; text-align: left; cursor: pointer; font-size: 12px; color: var(--text-secondary); animation: rise .3s ease; }
.file-r:hover { background: var(--accent-softer); color: var(--accent-deep); }
.file-r span { min-width: 0; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.file-r em { margin-left: auto; font-style: normal; color: var(--text-faint); font-size: 10.5px; }
.rev { margin-bottom: 8px; padding: 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.rev-t { display: flex; align-items: center; gap: 10px; }
.rev-t .ico { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: linear-gradient(135deg, #3b82f6, #22b8cf); color: #fff; }
.rev-t b { display: block; color: var(--text-strong); font-size: 13px; }
.rev-t small { color: var(--muted); font-size: 11px; }
.rev-t .badge { margin-left: auto; }
.rev-l { display: flex; justify-content: space-between; margin: 10px 0 8px; padding-top: 8px; border-top: 1px solid var(--border); color: var(--muted); font-size: 11.5px; }
.rev-l b { color: var(--text-strong); }
.rev .go { width: 100%; padding: 8px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 650; font-size: 12.5px; cursor: pointer; }
.rev .go:hover { background: var(--accent-strong); }
.rev .go:disabled { opacity: .7; cursor: progress; }
.rev-out { margin-top: 8px; font-size: 11.5px; color: var(--text-secondary); }
.rev-out li { margin: 3px 0 3px 14px; }
.iso { display: flex; align-items: center; gap: 8px; margin-top: 4px; padding: 8px 10px; border: 1px solid var(--warning-border); border-radius: 9px; background: var(--warning-soft); color: var(--warning); font-size: 11.5px; }
.iso b { font-weight: 650; }

/* composer */
.composer { flex: none; margin: 6px 22px 16px; border: 1px solid var(--border-strong); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow-2); }
.ta { min-height: 62px; max-height: 84px; overflow: hidden; padding: 12px 15px 6px; color: var(--text); font-size: 13.5px; line-height: 1.55; }
.ta .ph { color: var(--text-faint); }
.ta .caret { display: inline-block; width: 1.5px; height: 1em; margin-left: 1px; background: var(--accent); vertical-align: -2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.cbar { display: flex; align-items: center; gap: 8px; padding: 6px 10px 10px 15px; font-size: 11px; color: var(--muted); flex-wrap: wrap; }
.cbar .mdl { display: flex; align-items: center; gap: 6px; }
.fsel { padding: 4px 8px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface-subtle); color: var(--text-secondary); font-size: 11.5px; white-space: nowrap; }
.cbar .hint { margin-left: auto; color: var(--text-faint); }
.cbar button.run { display: inline-flex; align-items: center; gap: 7px; margin-left: auto; padding: 8px 16px; border: 0; border-radius: 9px; background: var(--accent); color: #fff; font-weight: 650; font-size: 13px; cursor: pointer; }
.cbar button.run:hover { background: var(--accent-strong); }
.cbar button.run:disabled { opacity: .55; cursor: progress; }

/* modal */
.mask { position: absolute; inset: 38px 0 0; z-index: 20; display: grid; place-items: center; padding: 24px; background: rgba(15, 20, 28, .55); animation: fade .2s ease; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.modal { width: min(720px, 100%); max-height: 100%; display: flex; flex-direction: column; border-radius: 14px; background: var(--surface); box-shadow: var(--shadow-4); overflow: hidden; }
.modal-h { display: flex; align-items: flex-start; gap: 12px; padding: 16px 18px 10px; border-bottom: 1px solid var(--border); }
.modal-h .kick { color: var(--accent-ink); font-size: 11.5px; font-weight: 700; letter-spacing: .04em; }
.modal-h h3 { margin: 2px 0 0; color: var(--text-strong); font-size: 18px; word-break: break-all; }
.modal-h .sp { flex: 1; }
.modal-tabs { display: flex; gap: 6px; padding: 10px 18px 0; }
.modal-tabs button { padding: 5px 12px; border: 0; border-radius: 8px; background: var(--surface-soft); color: var(--text-secondary); font-size: 12.5px; cursor: pointer; }
.modal-tabs button.on { background: var(--accent-softer); color: var(--accent-deep); font-weight: 650; }
.modal-b { padding: 12px 18px 18px; overflow: auto; }
.modal-b pre { margin: 0; padding: 12px 14px; border-radius: 9px; background: var(--surface-sunk); color: var(--text); font: 12px/1.6 var(--mono); overflow: auto; }
.kv { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 6px 12px; font-size: 12.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; color: var(--text); word-break: break-all; }
.x { width: 30px; height: 30px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-secondary); cursor: pointer; }
.x:hover { background: var(--surface-hover); }

.demo-hint { margin: 14px 0 0; text-align: center; color: var(--text-faint); font-size: 13px; }

@media (max-width: 1040px) { .shell { grid-template-columns: 200px minmax(0, 1fr); } .ws { display: none; } .rc-b { grid-template-columns: 1fr; } }
@media (max-width: 720px) {
  .shell { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); height: 640px; }
  .sb { flex-direction: row; overflow-x: auto; padding: 8px; border-right: 0; border-bottom: 1px solid var(--border); gap: 4px; }
  .sb-brand, .sb-label, .sb-spacer, .sb-bottom, .sb .proj { display: none; }
  .sb-item { width: auto; white-space: nowrap; flex: none; margin: 0; }
  .scroll { padding: 14px 12px 8px; }
  .composer { margin: 4px 10px 10px; }
  .cbar .hint, .cbar .fsel.opt { display: none; }
  .barrow { grid-template-columns: 96px minmax(0, 1fr) 30px; }
  .empty h2 { font-size: 24px; }
}