@font-face{font-family:Automata Mono;font-style:normal;font-weight:400;font-display:block;src:url(./mono-400-DR4Y2AzQ.woff2) format("woff2");unicode-range:U+0-8,U+B-7F,U+A0-131,U+134-17F,U+300-304,U+308,U+374-375,U+37E,U+384-38A,U+38C,U+38E-3A1,U+3A3-3CF,U+3D5-3D7,U+2010,U+2013-2014,U+2018-201A,U+201C-201E,U+2020-2022,U+2024,U+2026,U+2030,U+2032-2034,U+2039-203A,U+203E-203F,U+2044-2046,U+2070,U+2074-207A,U+2080-2089,U+20AB-20AC,U+20AE,U+20BD,U+20BF,U+2113,U+2115-2116,U+211A,U+2122,U+2124,U+212E,U+2140,U+2190-2199,U+219E,U+21A0,U+21A3,U+21A5-21A7,U+21AD,U+21C9,U+21D1-21D4,U+21E7-21E8,U+2200-2203,U+2205,U+2208-2209,U+220B-220C,U+220E-2212,U+2215,U+2218-221A,U+221E,U+2223,U+2225,U+2227-222B,U+2236-2239,U+223C,U+2243,U+2245,U+2247-2249,U+224B,U+2254,U+2257,U+225F-2262,U+2264-2265,U+226E-2273,U+227A,U+227C,U+2282-2288,U+228E,U+2291,U+2293-2297,U+2299,U+229B,U+22A2,U+22A4-22A5,U+22B8,U+22C6,U+22CE,U+22D0,U+22EE-22F1,U+2302-2305,U+2308-230B,U+2318,U+2325,U+2368,U+2373-2374,U+239B-23AD,U+23FB-23FE,U+2400-2421,U+2424,U+25A0-25A1,U+25AA-25AB,U+25B2-25C7,U+25CA,U+25CC,U+25CE-25CF,U+25D4-25D5,U+25E6-25EB,U+25EF,U+2713,U+2715,U+2717}@font-face{font-family:Automata Mono;font-style:normal;font-weight:500;font-display:block;src:url(./mono-500-CW-xmHpq.woff2) format("woff2");unicode-range:U+0-8,U+B-7F,U+A0-131,U+134-17F,U+300-304,U+308,U+374-375,U+37E,U+384-38A,U+38C,U+38E-3A1,U+3A3-3CF,U+3D5-3D7,U+2010,U+2013-2014,U+2018-201A,U+201C-201E,U+2020-2022,U+2024,U+2026,U+2030,U+2032-2034,U+2039-203A,U+203E-203F,U+2044-2046,U+2070,U+2074-207A,U+2080-2089,U+20AB-20AC,U+20AE,U+20BD,U+20BF,U+2113,U+2115-2116,U+211A,U+2122,U+2124,U+212E,U+2140,U+2190-2199,U+219E,U+21A0,U+21A3,U+21A5-21A7,U+21AD,U+21C9,U+21D1-21D4,U+21E7-21E8,U+2200-2203,U+2205,U+2208-2209,U+220B-220C,U+220E-2212,U+2215,U+2218-221A,U+221E,U+2223,U+2225,U+2227-222B,U+2236-2239,U+223C,U+2243,U+2245,U+2247-2249,U+224B,U+2254,U+2257,U+225F-2262,U+2264-2265,U+226E-2273,U+227A,U+227C,U+2282-2288,U+228E,U+2291,U+2293-2297,U+2299,U+229B,U+22A2,U+22A4-22A5,U+22B8,U+22C6,U+22CE,U+22D0,U+22EE-22F1,U+2302-2305,U+2308-230B,U+2318,U+2325,U+2368,U+2373-2374,U+239B-23AD,U+23FB-23FE,U+2400-2421,U+2424,U+25A0-25A1,U+25AA-25AB,U+25B2-25C7,U+25CA,U+25CC,U+25CE-25CF,U+25D4-25D5,U+25E6-25EB,U+25EF,U+2713,U+2715,U+2717}@font-face{font-family:Automata Mono;font-style:normal;font-weight:700;font-display:block;src:url(./mono-700-eI6A76b4.woff2) format("woff2");unicode-range:U+0-8,U+B-7F,U+A0-131,U+134-17F,U+300-304,U+308,U+374-375,U+37E,U+384-38A,U+38C,U+38E-3A1,U+3A3-3CF,U+3D5-3D7,U+2010,U+2013-2014,U+2018-201A,U+201C-201E,U+2020-2022,U+2024,U+2026,U+2030,U+2032-2034,U+2039-203A,U+203E-203F,U+2044-2046,U+2070,U+2074-207A,U+2080-2089,U+20AB-20AC,U+20AE,U+20BD,U+20BF,U+2113,U+2115-2116,U+211A,U+2122,U+2124,U+212E,U+2140,U+2190-2199,U+219E,U+21A0,U+21A3,U+21A5-21A7,U+21AD,U+21C9,U+21D1-21D4,U+21E7-21E8,U+2200-2203,U+2205,U+2208-2209,U+220B-220C,U+220E-2212,U+2215,U+2218-221A,U+221E,U+2223,U+2225,U+2227-222B,U+2236-2239,U+223C,U+2243,U+2245,U+2247-2249,U+224B,U+2254,U+2257,U+225F-2262,U+2264-2265,U+226E-2273,U+227A,U+227C,U+2282-2288,U+228E,U+2291,U+2293-2297,U+2299,U+229B,U+22A2,U+22A4-22A5,U+22B8,U+22C6,U+22CE,U+22D0,U+22EE-22F1,U+2302-2305,U+2308-230B,U+2318,U+2325,U+2368,U+2373-2374,U+239B-23AD,U+23FB-23FE,U+2400-2421,U+2424,U+25A0-25A1,U+25AA-25AB,U+25B2-25C7,U+25CA,U+25CC,U+25CE-25CF,U+25D4-25D5,U+25E6-25EB,U+25EF,U+2713,U+2715,U+2717}@font-face{font-family:Automata Sans;font-style:normal;font-weight:100 900;font-display:block;src:url(./sans-latin-D7_8FSNY.woff2) format("woff2");unicode-range:U+0,U+20-7E,U+A0-AC,U+AE-FF,U+131,U+152-153,U+300-301,U+303-304,U+308,U+2013-2014,U+2018-201A,U+201C-201E,U+2022,U+2026,U+2032-2033,U+2039-203A,U+2044,U+20AC,U+2122,U+2191,U+2193,U+2212}@font-face{font-family:Automata Sans;font-style:normal;font-weight:100 900;font-display:block;src:url(./sans-greek-Dr3TPHUM.woff2) format("woff2");unicode-range:U+0,U+20,U+41,U+A0,U+C4,U+374-376,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3D7,U+3DC-3DD,U+3F0-3F6,U+3F9-3FA,U+3FC-3FF}@font-face{font-family:"Automata Serif";font-style:normal;font-weight:200 900;font-display:block;src:url(./serif-latin-DwBw5UDO.woff2) format("woff2");unicode-range:U+20-7E,U+A0-FF,U+102,U+131,U+152-153,U+300-301,U+303-304,U+308,U+2013-2014,U+2018-201A,U+201C-201E,U+2022,U+2026,U+2032-2033,U+2039-203A,U+2044,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215}:root{color-scheme:light dark;--ground: #f7f7f5;--surface: #ffffff;--sunken: #f1f1ee;--ink: #14161a;--ink-soft: #34383e;--muted: #6b6f76;--faint: #9a9ea4;--hairline: #e4e4e0;--rule: #c8c8c2;--accent: #14161a;--accent-ink: #ffffff;--accent-tint: #ebebe7;--pass: #1f6f43;--pass-tint: #eef4f0;--fail: #a32d18;--fail-tint: #f8efec;--scrim: rgb(20 22 26 / 32%);--dot: #e3e3df;--serif: "Automata Serif", ui-serif, Georgia, serif;--sans: "Automata Sans", ui-sans-serif, system-ui, sans-serif;--mono: "Automata Mono", ui-monospace, SFMono-Regular, Menlo, monospace;--r-chip: 5px;--r-control: 8px;--r-sheet: 16px;--tap: 44px;--shell: 1180px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-left: env(safe-area-inset-left, 0px);--safe-right: env(safe-area-inset-right, 0px)}@media (prefers-color-scheme: dark){:root{--ground: #141518;--surface: #1a1c1f;--sunken: #17181b;--ink: #eceae5;--ink-soft: #c9c7c2;--muted: #92959b;--faint: #6a6d73;--hairline: #2b2d31;--rule: #43464b;--accent: #eceae5;--accent-ink: #141518;--accent-tint: #26282c;--pass: #7fb595;--pass-tint: #1a241e;--fail: #dd9276;--fail-tint: #261915;--scrim: rgb(0 0 0 / 58%);--dot: #24262a}}:root[data-theme=light]{color-scheme:light;--ground: #f7f7f5;--surface: #ffffff;--sunken: #f1f1ee;--ink: #14161a;--ink-soft: #34383e;--muted: #6b6f76;--faint: #9a9ea4;--hairline: #e4e4e0;--rule: #c8c8c2;--accent: #14161a;--accent-ink: #ffffff;--accent-tint: #ebebe7;--pass: #1f6f43;--pass-tint: #eef4f0;--fail: #a32d18;--fail-tint: #f8efec;--scrim: rgb(20 22 26 / 32%);--dot: #e3e3df}:root[data-theme=dark]{color-scheme:dark;--ground: #141518;--surface: #1a1c1f;--sunken: #17181b;--ink: #eceae5;--ink-soft: #c9c7c2;--muted: #92959b;--faint: #6a6d73;--hairline: #2b2d31;--rule: #43464b;--accent: #eceae5;--accent-ink: #141518;--accent-tint: #26282c;--pass: #7fb595;--pass-tint: #1a241e;--fail: #dd9276;--fail-tint: #261915;--scrim: rgb(0 0 0 / 58%);--dot: #24262a}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}body{background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:15px;line-height:1.4;font-feature-settings:"cv05" 1,"ss03" 1;-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%;overscroll-behavior-y:none}button{font:inherit;color:inherit;background:none;border:0;margin:0;padding:0;cursor:pointer;-webkit-tap-highlight-color:transparent}button:disabled{cursor:default}input{font:inherit;color:inherit}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.t-display{font-family:var(--serif);font-size:26px;line-height:1.16;font-weight:500;letter-spacing:-.012em}.t-title{font-family:var(--serif);font-size:19px;line-height:1.25;font-weight:500}.t-body{font-size:15px;line-height:1.45}.t-small{font-size:13px;line-height:1.42}.t-label{font-family:var(--mono);font-size:10px;line-height:1.3;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}.t-mono{font-family:var(--mono);font-size:13px;line-height:1.5;font-variant-ligatures:none}.t-mono-sm{font-family:var(--mono);font-size:11.5px;line-height:1.45;font-variant-ligatures:none}.muted{color:var(--muted)}.faint{color:var(--faint)}.pass{color:var(--pass)}.fail{color:var(--fail)}.t-mono,.t-mono-sm,.sel{user-select:text;-webkit-user-select:text}sup.sup{font-size:.72em;line-height:0;vertical-align:.42em;letter-spacing:0}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}.shell{max-width:860px;margin:0 auto;padding:calc(18px + var(--safe-top)) calc(18px + var(--safe-right)) calc(40px + var(--safe-bottom)) calc(18px + var(--safe-left))}.home-head{padding-bottom:20px;border-bottom:1px solid var(--rule)}.home-head h1{margin:0 0 6px}.home-head p{margin:0;max-width:56ch}.home-meta{display:flex;align-items:center;gap:14px;margin-top:16px;flex-wrap:wrap}.ghost{font-size:13px;color:var(--muted);padding:6px 10px;border:1px solid var(--hairline);border-radius:var(--r-control);min-height:32px}.ghost:hover{border-color:var(--rule);color:var(--ink)}.group-head{padding:26px 0 10px}.group-head p{margin:4px 0 0;max-width:60ch}.level-row{display:grid;grid-template-columns:30px 1fr auto 20px;align-items:baseline;gap:14px;width:100%;text-align:left;padding:14px 4px;border-bottom:1px solid var(--hairline);min-height:var(--tap)}.level-row:hover:not(:disabled){background:var(--sunken)}.level-row.is-locked{opacity:.45;cursor:default}.level-row .index{color:var(--faint)}.level-main{display:flex;flex-direction:column;gap:3px;min-width:0}.level-main code{color:var(--muted);overflow-wrap:anywhere}.level-row .status{color:var(--muted);white-space:nowrap}.level-row .tick{color:var(--pass);text-align:right}.home-foot{margin-top:34px;padding-top:16px;border-top:1px solid var(--hairline);max-width:68ch}.level{display:grid;grid-template-columns:minmax(320px,380px) minmax(0,1fr);height:100dvh;overflow:hidden}.pane{--pane-x: 22px;position:relative;display:flex;flex-direction:column;min-height:0;background:var(--surface);border-right:1px solid var(--hairline)}.pane-grab{display:none}.pane-head{display:flex;align-items:center;gap:8px;flex:none;padding:calc(18px + var(--safe-top)) var(--pane-x) 11px calc(var(--pane-x) + var(--safe-left))}.pane-tabs{display:flex;gap:2px;flex:none;padding:0 var(--pane-x) 0 calc(var(--pane-x) + var(--safe-left));border-bottom:1px solid var(--hairline);overflow-x:auto;scrollbar-width:none}.pane-tabs::-webkit-scrollbar{display:none}.pane-tab{min-height:34px;padding:0 7px 9px;margin-bottom:-1px;font-size:13px;color:var(--muted);white-space:nowrap;border-bottom:2px solid transparent}.pane-tab:first-child{padding-left:0}.pane-tab:hover{color:var(--ink)}.pane-tab.is-on{color:var(--ink);border-bottom-color:var(--ink)}.pane-body{flex:1 1 0;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:16px var(--pane-x) 20px calc(var(--pane-x) + var(--safe-left))}.pane-body>[hidden]{display:none}.back{width:26px;height:26px;margin-left:-6px;display:grid;place-items:center;border-radius:999px;color:var(--muted);font-size:17px;line-height:1}.back:hover{background:var(--sunken);color:var(--ink)}.brief-eyebrow{margin:0;font-family:var(--mono);font-size:9.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--muted)}.brief-q{font-family:var(--sans);font-size:22px;line-height:1.26;font-weight:450;letter-spacing:-.014em;margin:0 0 10px;text-wrap:balance;flex:none}.brief-set{display:block;color:var(--muted);padding-bottom:18px;border-bottom:1px solid var(--hairline);overflow-wrap:anywhere;flex:none}.brief-split{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding-top:18px}.brief-split .t-label{display:block;margin-bottom:9px}.verdicts{list-style:none;margin:0;padding:0;display:grid;gap:1px}.verdict-hit{display:flex;align-items:center;gap:8px;width:100%;text-align:left;padding:3px 6px 3px 2px;border-radius:5px;min-height:26px}.verdict-hit:hover{background:var(--sunken)}.mark{width:13px;flex:none;text-align:center;font-size:12px;line-height:1;color:var(--pass)}.verdict.is-off .mark,.verdict.is-off code{color:var(--fail)}.verdict.is-blank .mark{color:var(--faint)}.verdict.is-playing .verdict-hit{background:var(--accent-tint);box-shadow:inset 0 0 0 1px var(--rule)}.pane-foot{flex:none;padding:14px var(--pane-x) calc(16px + var(--safe-bottom)) calc(var(--pane-x) + var(--safe-left));border-top:1px solid var(--hairline)}.brief-score{margin:0;font-size:14px;font-weight:550;color:var(--muted)}.pane-foot.is-solved .brief-score{color:var(--pass)}.pane-foot.is-broken .brief-score{color:var(--fail)}.brief-why{margin:2px 0 0;color:var(--muted);min-height:1.4em}.pane-foot.is-broken .brief-why{color:var(--fail)}.brief-links{display:flex;gap:20px;row-gap:12px;flex-wrap:wrap;margin-top:14px}.brief-link{display:inline-flex;align-items:center;gap:4px;min-height:0;padding:0 0 3px;font-size:13.5px}.brief-link[hidden]{display:none}.stage{position:relative;display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--ground)}.diagram-wrap{flex:1 1 0;min-height:0;display:flex;flex-direction:column}.diagram{display:block;width:100%;flex:1 1 0;min-height:0;touch-action:none;cursor:default;user-select:none;-webkit-user-select:none}.canvas-hint{position:absolute;left:0;right:0;bottom:calc(10px + var(--safe-bottom));text-align:center;font-size:11.5px;color:var(--faint);margin:0;pointer-events:none}.empty-prompt{position:absolute;inset:0;z-index:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;pointer-events:none;color:var(--faint);text-align:center;padding:0 24px}.empty-prompt[hidden]{display:none}.empty-prompt p{margin:0}.empty-ring{width:62px;height:62px;border-radius:999px;border:1.6px dashed var(--rule)}.corner{position:absolute;top:calc(10px + var(--safe-top));right:calc(10px + var(--safe-right));display:flex;gap:2px;z-index:3}.corner-b{width:34px;height:34px;display:grid;place-items:center;border-radius:8px;color:var(--faint);font-size:15px;line-height:1}.corner-b:hover:not(:disabled){color:var(--ink);background:var(--surface)}.corner-b:disabled{opacity:.3}.state-bar{position:absolute;top:0;left:0;z-index:4;display:flex;gap:1px;padding:3px;border-radius:10px;background:var(--surface);border:1px solid var(--rule);box-shadow:0 6px 18px -8px #00000047;white-space:nowrap}.state-bar[hidden]{display:none}.sb{min-height:30px;padding:0 10px;border-radius:7px;font-size:12.5px;color:var(--ink)}.sb:hover{background:var(--sunken)}.sb.is-on{background:var(--accent);color:var(--accent-ink)}.grid{stroke:none}.dot{fill:var(--dot)}.edge-stroke{stroke:var(--ink);stroke-width:1.6;stroke-linecap:round;fill:none}.edge-head{fill:var(--ink);stroke:none}.pending{stroke:var(--ink);stroke-width:1.6;stroke-dasharray:6 4;fill:none;opacity:.65}.start-shaft{stroke:var(--ink);stroke-width:1.6;stroke-linecap:round}.start-head{fill:var(--ink)}.state{cursor:grab}.state-hit{fill:transparent}.state-ring{fill:var(--surface);stroke:var(--ink);stroke-width:1.6}.state-accept{fill:none;stroke:none}.state.is-accepting .state-accept{stroke:var(--ink);stroke-width:1.4}.state-label{fill:var(--ink);font-family:var(--mono);font-weight:500;pointer-events:none}.state-grip{fill:var(--accent);stroke:var(--surface);stroke-width:2;opacity:0;pointer-events:none;cursor:crosshair;transition:opacity .12s ease}.state.is-selected .state-ring{stroke-width:2.6}.state.is-hover .state-grip,.state.is-selected .state-grip{opacity:1;pointer-events:auto}.state.is-target .state-ring{stroke-width:2.6;fill:var(--accent-tint)}.state.is-active .state-ring{fill:var(--accent)}.state.is-active .state-label{fill:var(--accent-ink)}.state.is-active .state-accept{stroke:var(--accent-ink)}.diagram:focus,.state:focus,.chip:focus{outline:none}.state:focus-visible .state-ring{stroke-width:3;stroke-dasharray:3 2.5}.chip{cursor:pointer}.chip-bg{fill:var(--surface);stroke:var(--hairline);stroke-width:1}.chip-text{fill:var(--ink);font-family:var(--mono);pointer-events:none}.chip.is-lit .chip-bg,.chip:hover .chip-bg{fill:var(--accent-tint);stroke:var(--ink)}.chip.is-selected .chip-bg{stroke:var(--ink);stroke-width:1.6}.chip:focus-visible .chip-bg{stroke:var(--ink);stroke-width:2;stroke-dasharray:3 2}.trace{flex:none;position:relative;z-index:2;background:var(--surface);border-top:1px solid var(--hairline);padding:10px 14px calc(10px + var(--safe-bottom));display:grid;gap:8px}.trace[hidden]{display:none}.trace .band-head{display:flex;align-items:center;gap:10px}.trace .verdict{margin-left:auto;color:var(--muted)}.trace-input,.mem-row{display:flex;flex-wrap:wrap;gap:3px}.trace-memory{display:flex;align-items:center;gap:10px}.mem-label{flex:none}.cellx{min-width:24px;padding:3px 5px;text-align:center;border:1px solid var(--hairline);border-radius:var(--r-chip);background:var(--surface);font-family:var(--mono);font-size:12.5px}.cellx.is-read{color:var(--faint)}.cellx.is-head{border-color:var(--accent);background:var(--accent);color:var(--accent-ink)}.cellx.is-empty{color:var(--muted)}.trace-caption{margin:0}.transport-row{display:flex;align-items:center;gap:6px}.transport{min-width:36px;min-height:32px;padding:0 10px;border:1px solid var(--hairline);border-radius:var(--r-control);font-size:14px;line-height:1}.transport.is-primary{min-width:62px;font-size:12.5px}.transport:disabled{opacity:.35}.transport-row .counter{margin-left:auto;color:var(--muted)}.band-head{display:flex;align-items:baseline;gap:10px;padding:4px 0 8px}.band-head .sig{color:var(--muted);margin-left:auto;overflow-wrap:anywhere;text-align:right}.band+.band{border-top:1px solid var(--hairline);margin-top:6px}.band-toggle{display:flex;align-items:center;gap:8px;width:100%;padding:6px 0 8px;min-height:36px}.chevron{width:7px;height:7px;border-right:1.4px solid var(--muted);border-bottom:1.4px solid var(--muted);transform:rotate(45deg) translate(-2px,-2px);transition:transform .16s ease}.band-toggle[aria-expanded=false] .chevron{transform:rotate(-45deg) translate(-1px,1px)}.tuple{display:grid;grid-template-columns:auto 1fr;gap:3px 14px;margin:0 0 14px}.tuple.is-collapsed{display:none}.tuple dt{color:var(--muted);padding-top:1px}.tuple dd{margin:0;display:flex;gap:10px;align-items:baseline;flex-wrap:wrap;min-width:0}.tuple dd code{overflow-wrap:anywhere}.gloss{margin-left:auto;white-space:nowrap}.delta{list-style:none;margin:0;padding:0}.delta-line{border-bottom:1px solid var(--hairline)}.delta-hit{display:block;width:100%;text-align:left;padding:8px 6px;min-height:38px}.delta-line.is-missing .delta-hit{color:var(--fail)}.delta-line.is-lit,.delta-line:hover{background:var(--accent-tint)}.delta-note{margin:10px 0 4px}.sheet{position:fixed;inset:0;z-index:20}.sheet-backdrop{position:absolute;inset:0;background:var(--scrim);opacity:0;transition:opacity .18s ease}.sheet.is-open .sheet-backdrop{opacity:1}.sheet-panel{position:absolute;left:0;right:0;bottom:0;max-height:88dvh;display:flex;flex-direction:column;background:var(--surface);border-top:1px solid var(--rule);border-radius:var(--r-sheet) var(--r-sheet) 0 0;transform:translateY(100%);transition:transform .2s cubic-bezier(.2,.8,.3,1);padding-bottom:var(--safe-bottom)}.sheet.is-open .sheet-panel{transform:translateY(0)}@media (min-width: 720px){.sheet-panel{left:50%;right:auto;bottom:4vh;width:min(560px,92vw);transform:translate(-50%,calc(100% + 8vh));border:1px solid var(--rule);border-radius:var(--r-sheet);max-height:86dvh}.sheet.is-open .sheet-panel{transform:translate(-50%)}}.grab{width:36px;height:4px;border-radius:999px;background:var(--rule);margin:9px auto 2px;flex:none;cursor:grab;touch-action:none}.sheet-head{display:flex;align-items:center;gap:12px;padding:6px 18px 0}.sheet-title{margin:0;flex:1}.sheet-close{min-width:var(--tap);min-height:var(--tap);font-size:20px;line-height:1;color:var(--muted)}.sheet-body{padding:8px 18px calc(20px + var(--safe-bottom));overflow-y:auto;overscroll-behavior:contain}.sheet-actions{display:flex;gap:22px;row-gap:14px;flex-wrap:wrap;padding-top:14px}.action{min-height:0;padding:0 0 4px;font-size:14px}.brief-link,.action{position:relative;border:none;border-radius:0;background:none;color:var(--muted);box-shadow:inset 0 -1px 0 var(--rule);transition:box-shadow .12s ease,color .12s ease}.brief-link:after,.action:after{content:"";position:absolute;inset:-12px -6px}.brief-link:hover,.action:hover{color:var(--ink);background:none;box-shadow:inset 0 -1px 0 var(--ink)}.brief-link:focus-visible,.action:focus-visible{outline:none;color:var(--ink);box-shadow:inset 0 -1px 0 var(--ink),0 0 0 2px var(--accent-tint)}.brief-link.is-next,.action.is-primary{color:var(--ink);font-weight:500;box-shadow:inset 0 -2px 0 var(--ink)}.brief-link.is-next:hover,.action.is-primary:hover{box-shadow:inset 0 -3px 0 var(--ink)}.action.is-danger{color:var(--fail);box-shadow:inset 0 -1px color-mix(in srgb,var(--fail) 45%,var(--hairline))}.action.is-danger:hover{color:var(--fail);box-shadow:inset 0 -1px 0 var(--fail)}.rule-head{margin:4px 0 14px;color:var(--muted)}.field{margin-bottom:16px}.field .t-label{display:block;margin-bottom:6px}.choice-row{display:flex;gap:6px;flex-wrap:wrap}.choice{min-width:var(--tap);min-height:38px;padding:0 12px;border:1px solid var(--hairline);border-radius:var(--r-chip);background:var(--surface);font-family:var(--mono);font-size:13px}.choice:hover{border-color:var(--rule)}.choice.is-on{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);color:var(--ink)}.rename-input{width:100%;min-height:var(--tap);padding:0 12px;background:var(--surface);border:1px solid var(--rule);border-radius:var(--r-control)}.note-block{margin-bottom:22px}.note-block .t-label{display:block;margin-bottom:6px}.note-block p{margin:0 0 8px;max-width:62ch}.lines{display:flex;flex-direction:column;gap:3px;margin-bottom:14px}.wrap{overflow-wrap:anywhere}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--hairline);margin-bottom:14px;overflow-x:auto}.tab{padding:8px 12px;min-height:38px;font-size:13px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}.tab.is-on{color:var(--ink);border-bottom-color:var(--ink)}.tab.is-off{color:var(--faint)}.tab.is-off.is-on{color:var(--muted);border-bottom-color:var(--rule)}.tab-mark{margin-left:5px;opacity:.75}.analysis-none{margin:0 0 16px;max-width:62ch}.declined{border:1px solid var(--rule);border-radius:var(--r-control);padding:12px 14px 4px;background:var(--sunken)}.declined .t-label{display:block;margin-bottom:6px}.tuts{display:flex;flex-direction:column;gap:14px;margin-top:12px}.tut{border-left:2px solid var(--rule);padding-left:12px}.tut-head{display:flex;align-items:baseline;gap:8px;margin:0 0 4px}.tut-sym{font-family:var(--mono);font-size:15px;color:var(--ink)}.tut-yours{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap;margin:6px 0 0}.tut-yours code{overflow-wrap:anywhere;color:var(--ink)}.sig{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;margin:10px 0 12px}.sig dt,.gloss-list dt,.tier-facts dt{color:var(--muted);font-size:12px}.sig dd,.gloss-list dd,.tier-facts dd{margin:0;min-width:0;overflow-wrap:anywhere}.gloss-list{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:8px 0 0}.gloss-list dt{color:var(--ink);white-space:nowrap}.gloss-list dd{font-size:13px;color:var(--muted)}.tiers{display:flex;flex-direction:column;gap:2px;margin-top:10px}.tier{padding:10px 12px;border-radius:var(--r-control);border:1px solid transparent}.tier.is-here{background:var(--accent-tint);border-color:var(--rule)}.tier-head{display:flex;align-items:baseline;gap:8px;margin:0 0 6px}.tier-n{font-family:var(--mono);font-size:15px;color:var(--ink)}.tier-name{font-size:13px;color:var(--ink)}.tier-here{margin-left:auto;color:var(--ink)}.tier-facts{display:grid;grid-template-columns:auto 1fr;gap:3px 12px;margin:0}.tier-facts dt{font-size:11px;white-space:nowrap}.scroll-x{overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch;scrollbar-width:thin;padding-bottom:2px}.scroll-x::-webkit-scrollbar{height:8px}.scroll-x::-webkit-scrollbar-thumb{background:var(--rule);border-radius:4px}table.subset-table{border-collapse:collapse;width:100%;margin-top:8px}table.subset-table th,table.subset-table td{text-align:left;padding:7px 10px 7px 0;border-bottom:1px solid var(--hairline);vertical-align:top;white-space:nowrap}table.subset-table th{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;font-weight:500;color:var(--muted)}table.subset-table tr.is-start td:first-child:after{content:" start";color:var(--muted);font-size:10px;letter-spacing:.1em;text-transform:uppercase}@media (max-width: 899px){.level{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr)}.stage{grid-area:1 / 1}.pane{position:fixed;left:0;right:0;bottom:0;z-index:8;height:68dvh;border-right:0;border-top:1px solid var(--rule);border-radius:var(--r-sheet) var(--r-sheet) 0 0;box-shadow:0 -8px 30px -14px #00000047;transform:translateY(calc(100% - 202px));transition:transform .22s cubic-bezier(.2,.8,.3,1)}.pane.is-open{transform:none}.pane-grab{display:block;width:100%;padding:9px 0 3px;flex:none}.pane-grab:before{content:"";display:block;width:36px;height:4px;margin:0 auto;border-radius:999px;background:var(--rule)}.pane-head{padding-top:2px;padding-bottom:8px}.pane-grab{order:0}.pane-head{order:1}.pane-foot{order:2;border-top:0;border-bottom:1px solid var(--hairline);padding-top:0;padding-bottom:12px}.pane-tabs{order:3}.pane-body{order:4;padding-top:14px}.brief-split{padding-top:12px}.stage{padding-bottom:202px}.canvas-hint{bottom:calc(212px + var(--safe-bottom))}.empty-prompt{bottom:202px}}@media (max-width: 460px){.brief-split{grid-template-columns:1fr;gap:14px}}