:root{--bg:#0f1016;--surface-solid:#15161e;--surface-raised:#14151d;--surface-subtle:#ffffff09;--surface-soft:#ffffff0d;--surface-hover:#ffffff1a;--surface-strong:#ffffff38;--text:#f4f4f7;--text-soft:#d4d5dd;--muted:#a0a2ad;--placeholder:#7c7e8a;--border:#ffffff1a;--border-strong:#ffffff42;--glass:#ffffff0f;--veil:#0f10168c;--glass-top:#ffffff14;--glass-bottom:#ffffff05;--accent:#b0e0e6;--accent-hover:#c9edf1;--on-accent:#0f1016;--accent-soft:#b0e0e61a;--accent-border:#b0e0e6a6;--accent-ring:#b0e0e624;--success:#8fe3b0;--success-soft:#8fe3b01a;--success-border:#8fe3b059;--success-strong:#8fe3b0e6;--success-ink:#dff7e8;--on-success:#101016;--danger:#ff9e9e;--danger-soft:#ff9e9e17;--danger-border:#ff9e9e52;--danger-strong:#ff9e9ee6;--on-danger:#101016;--warning:#ffd9a8;--warning-soft:#ffd9a81a;--warning-border:#ffd9a852;--warning-ink:#ffd9a8;--topbar-bg:linear-gradient(180deg, #0f1016eb, #0f1016b3);--brand-a:#232634;--brand-b:#15161e;--body-glow-a:#a9dce81a;--body-glow-b:#d9c9ff14;--scrim:#00000038;--scrim-strong:#0000003d;--bar-track:#ffffff14;--handle:#ffffff3d;--on-category:#101016;--hazard-bg:#ff9e9e0f;--hazard-code-bg:#f0b6b6;--hazard-code-ink:#1a1010;--cat-alkali:#ffb7c5;--cat-alkaline:#ffd9a8;--cat-transition:#a9dce8;--cat-post-transition:#c7ceea;--cat-metalloid:#cdeba5;--cat-nonmetal:#fff3b8;--cat-halogen:#9fe2d8;--cat-noble:#d9c9ff;--cat-lanthanide:#f3d9c0;--cat-actinide:#e8c4c4;--cat-alkali-ink:#9b2c4a;--cat-alkaline-ink:#8a5310;--cat-transition-ink:#0f5a6b;--cat-post-transition-ink:#3d4c7a;--cat-metalloid-ink:#3f6a10;--cat-nonmetal-ink:#7a5b00;--cat-halogen-ink:#0c6257;--cat-noble-ink:#5b3e9e;--cat-lanthanide-ink:#7a4a17;--cat-actinide-ink:#7a2e3a;--topbar-h:108px;--radius:16px;--shadow:0 24px 60px #00000073;--font:"Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:var(--font);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}[data-theme=light]{--bg:#f4f6fb;--surface-solid:#fff;--surface-raised:#f7f8fc;--surface-subtle:#14162009;--surface-soft:#1416200d;--surface-hover:#14162014;--surface-strong:#14162038;--text:#1a1c24;--text-soft:#3f4454;--muted:#5b6070;--placeholder:#6b7080;--border:#14162024;--border-strong:#1416204d;--glass:#ffffff8c;--veil:#fafbfedb;--glass-top:#ffffffe6;--glass-bottom:#ffffff8c;--accent:#0b6470;--accent-hover:#09525c;--on-accent:#fff;--accent-soft:#0b64701a;--accent-border:#0b64708c;--accent-ring:#0b647033;--success:#0b6b3a;--success-soft:#0b6b3a1a;--success-border:#0b6b3a4d;--success-strong:#0b6b3a;--success-ink:#0b6b3a;--on-success:#fff;--danger:#b3261e;--danger-soft:#b3261e17;--danger-border:#b3261e4d;--danger-strong:#b3261e;--on-danger:#fff;--warning:#8a5310;--warning-soft:#8a53101a;--warning-border:#8a53104d;--warning-ink:#8a5310;--topbar-bg:linear-gradient(180deg, #f4f6fbf0, #f4f6fbb8);--brand-a:#e7ebf5;--brand-b:#fff;--body-glow-a:#a9dce847;--body-glow-b:#d9c9ff3d;--scrim:#1416200d;--scrim-strong:#14162012;--bar-track:#1416201a;--handle:#14162038;--hazard-bg:#b3261e0f;--hazard-code-bg:#f6cdcd;--hazard-code-ink:#64120d;--shadow:0 24px 60px #14162029;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}[data-theme=light] .search__cat{color:var(--cat-ink,var(--cat-color))}[data-theme=light] .chip__dot{background:var(--dot-ink,var(--dot-color));box-shadow:none}[data-theme=light] .cell2d__symbol{color:var(--cell-ink,var(--text))}[data-theme=light] .tray__symbol{color:var(--tray-ink,var(--text))}[data-theme=light] .element-panel__symbol{color:var(--accent-ink,var(--text))}[data-theme=light] .badge{color:var(--badge-ink,var(--text))}[data-theme=light] .badge__dot{background:var(--badge-ink,var(--badge-color))}[data-theme=light] .trend-list__bar>span{background:var(--bar-ink,var(--bar-color,var(--accent)))}*,:before,:after{box-sizing:border-box}html,body,#root{height:100%}body{background:radial-gradient(1200px 600px at 15% -10%, var(--body-glow-a), transparent 60%), radial-gradient(900px 500px at 90% 0%, var(--body-glow-b), transparent 55%), var(--bg);color:var(--text);margin:0;overflow:hidden}button,input{font:inherit;color:inherit}button{cursor:pointer}h1,h2,h3,p,ul,dl,dd{margin:0}ul{padding:0;list-style:none}sub{font-size:.68em;line-height:0}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.seo{gap:18px;max-width:920px;margin:0 auto;padding:28px 20px 64px;display:grid}.seo__bar{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;padding-bottom:14px;display:flex}.seo__brand{letter-spacing:-.01em;font-weight:700;text-decoration:none}.seo__nav{flex-wrap:wrap;gap:14px;font-size:13px;display:flex}.seo__nav a{color:var(--muted);text-decoration:none}.seo__nav a:hover,.seo__nav a[aria-current=page]{color:var(--text)}.seo__main{gap:14px;display:grid}.seo h1{font-size:clamp(26px,4vw,36px);line-height:1.15}.seo h2{letter-spacing:-.01em;margin-top:10px;font-size:16px}.seo p{color:var(--muted);max-width:72ch;line-height:1.65}.seo a{color:var(--text)}.seo__facts{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:2px 0;display:grid}.seo__facts div{border:1px solid var(--border);background:var(--surface-soft);border-radius:12px;padding:10px 12px}.seo__facts dt{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:10.5px}.seo__facts dd{margin:4px 0 0;font-size:14px;font-weight:600}.seo__group ul{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.seo__group li{margin:0}.seo__group li a{border:1px solid var(--border);background:var(--surface-soft);border-radius:999px;align-items:center;gap:6px;min-height:36px;padding:7px 12px;font-size:13px;text-decoration:none;display:inline-flex}.seo__group li a:hover{background:var(--surface-hover);border-color:var(--border-strong)}.seo__group li span{color:var(--muted);font-size:11.5px}.seo__more{padding-top:6px;font-size:13px}@media (width<=560px){.seo{padding:20px 16px 48px}}.app{flex-direction:column;height:100dvh;display:flex;overflow:hidden}.app__main{flex:1;min-height:0;position:relative;overflow:hidden}.stage{z-index:0;position:absolute;inset:0}.stage canvas{display:block;width:100%!important;height:100%!important}.empty-route{text-align:center;place-content:center;gap:16px;height:100%;display:grid}.topbar{z-index:20;background:var(--topbar-bg);border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);padding:10px 16px;padding-top:max(10px, env(safe-area-inset-top));position:relative}.topbar__row{align-items:center;gap:14px;min-height:44px;display:flex}.brand{letter-spacing:.01em;white-space:nowrap;background:0 0;border:0;border-radius:10px;align-items:center;gap:10px;padding:4px;font-size:17px;display:inline-flex}.brand__mark{flex:none;width:26px;height:26px;overflow:visible}.brand__text{color:var(--muted)}.brand__text strong{color:var(--text);font-weight:700}.mode-nav{border:1px solid var(--border);background:var(--glass);border-radius:12px;gap:2px;padding:3px;display:inline-flex}.mode-nav__item{color:var(--muted);white-space:nowrap;background:0 0;border:0;border-radius:9px;min-height:36px;padding:8px 12px;font-size:13.5px}.mode-nav__item:hover{color:var(--text)}.mode-nav__item.is-active{background:var(--surface-hover);color:var(--text);box-shadow:inset 0 0 0 1px var(--border)}.bottom-nav{display:none}.search{flex:1;min-width:0;max-width:560px;position:relative}.search__field{border:1px solid var(--border);background:var(--surface-soft);border-radius:12px;align-items:center;gap:8px;height:42px;padding:0 10px 0 12px;display:flex}.search__field:focus-within{border-color:var(--accent-border);box-shadow:0 0 0 3px var(--accent-ring)}.search__icon{width:18px;height:18px;color:var(--muted);flex:none}.search input{background:0 0;border:0;outline:none;flex:1;min-width:0;font-size:14px}.search input::placeholder{color:var(--placeholder)}.search__kbd{color:var(--muted);border:1px solid var(--border);background:var(--scrim);border-radius:6px;flex:none;padding:2px 5px;font-size:10.5px}.search__results{background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--veil);border:1px solid var(--border);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);z-index:40;border-radius:14px;max-height:340px;padding:6px;position:absolute;top:calc(100% + 8px);left:0;right:0;overflow-y:auto}.search__result{text-align:left;background:0 0;border:0;border-radius:9px;grid-template-columns:34px 40px 1fr auto;align-items:center;gap:8px;width:100%;padding:9px 10px;display:grid}.search__result:hover,.search__result:focus-visible{background:var(--surface-hover)}.search__z{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.search__symbol{font-size:17px;font-weight:700}.search__name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.search__cat{opacity:.9;color:var(--cat-color);font-size:11.5px}.search__empty{color:var(--muted);padding:14px;font-size:13.5px;line-height:1.5}.toolbar{gap:6px;margin-left:auto;display:flex}.tool-btn{border:1px solid var(--border);background:var(--surface-subtle);letter-spacing:.02em;min-width:44px;height:40px;color:var(--muted);border-radius:10px;justify-content:center;align-items:center;gap:6px;padding:0 10px;font-size:12.5px;font-weight:600;display:inline-flex}.tool-btn:hover{color:var(--text)}.tool-btn__icon{place-items:center;display:grid}.chipbar{scrollbar-width:none;gap:8px;padding:10px 0 12px;display:flex;overflow-x:auto}.chipbar::-webkit-scrollbar{display:none}.chip{border:1px solid var(--border);background:var(--surface-subtle);color:var(--muted);white-space:nowrap;border-radius:999px;align-items:center;gap:6px;min-height:36px;padding:7px 12px;font-size:12.5px;display:inline-flex}.chip:hover{color:var(--text)}.chip.is-active{color:var(--text);border-color:var(--border-strong);background:var(--surface-hover)}.chip__dot{background:var(--dot-color,var(--muted));width:8px;height:8px;box-shadow:0 0 0 1px var(--border-strong);border-radius:50%;flex:none}.hint{left:16px;bottom:max(16px, env(safe-area-inset-bottom));z-index:15;border:1px solid var(--border);background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--veil);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);max-width:min(520px,100% - 32px);color:var(--muted);border-radius:12px;align-items:center;gap:12px;padding:10px 12px 10px 16px;font-size:12.5px;line-height:1.4;display:flex;position:absolute}.hint__close{color:var(--muted);background:0 0;border:0;border-radius:8px;flex:none;padding:6px}.element-panel{z-index:30;border:1px solid var(--border);background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--veil);-webkit-backdrop-filter:blur(22px)saturate(130%);backdrop-filter:blur(22px)saturate(130%);width:min(420px,38vw);box-shadow:var(--shadow);opacity:0;pointer-events:none;border-radius:20px;flex-direction:column;transition:transform .32s cubic-bezier(.22,1,.36,1),opacity .24s;display:flex;position:absolute;top:12px;bottom:12px;right:12px;transform:translate(calc(100% + 24px))}.element-panel.is-open{opacity:1;pointer-events:auto;transform:translate(0)}.element-panel.is-switching{opacity:0;pointer-events:none;transition-duration:.18s;transform:translate(calc(100% + 24px))}.element-panel__handle{display:none}.element-panel__head{justify-content:space-between;align-items:flex-start;gap:12px;padding:18px 18px 12px;display:flex}.element-panel__identity{gap:14px;min-width:0;display:flex}.element-panel__symbol{background:color-mix(in srgb, var(--accent-color) 16%, var(--surface-solid));border:1px solid color-mix(in srgb, var(--accent-color) 40%, transparent);width:68px;height:68px;color:var(--text);border-radius:14px;flex:none;place-items:center;font-size:30px;font-weight:700;display:grid}.element-panel__head h2{margin-bottom:4px;font-size:22px;line-height:1.15}.element-panel__meta{color:var(--muted);font-variant-numeric:tabular-nums;margin-bottom:8px;font-size:12.5px}.badge{border:1px solid color-mix(in srgb, var(--badge-color) 45%, transparent);background:color-mix(in srgb, var(--badge-color) 12%, transparent);border-radius:999px;align-items:center;gap:6px;padding:3px 9px 3px 7px;font-size:11.5px;display:inline-flex}.badge__dot{background:var(--badge-color);border-radius:50%;width:7px;height:7px}.icon-btn{border:1px solid var(--border);background:var(--surface-subtle);width:36px;height:36px;color:var(--muted);border-radius:10px;flex:none;place-items:center;font-size:13px;display:grid}.icon-btn:hover{color:var(--text)}.tabs{border-bottom:1px solid var(--border);scrollbar-width:none;gap:2px;padding:0 12px;display:flex;overflow-x:auto}.tabs::-webkit-scrollbar{display:none}.tab{color:var(--muted);white-space:nowrap;background:0 0;border:0;border-bottom:2px solid #0000;min-height:44px;margin-bottom:-1px;padding:10px 9px;font-size:12.5px}.tab.is-active{color:var(--text);border-bottom-color:var(--accent)}.element-panel__body{overscroll-behavior:contain;flex:1;max-width:68ch;padding:16px 18px 24px;overflow-y:auto}.panel-stack{flex-direction:column;gap:16px;display:flex}.panel-summary{color:var(--text-soft);font-size:14.5px;line-height:1.65}.facts{border:1px solid var(--border);background:var(--border);border-radius:12px;flex-direction:column;gap:1px;display:flex;overflow:hidden}.fact{background:var(--surface-raised);justify-content:space-between;align-items:baseline;gap:16px;padding:10px 12px;display:flex}.fact dt{color:var(--muted);font-size:12.5px}.fact dd{text-align:right;font-variant-numeric:tabular-nums;font-size:13px}.facts--dense .fact{padding:9px 12px}.panel-actions{flex-wrap:wrap;gap:8px;display:flex}.btn{border:1px solid var(--border);background:var(--surface-soft);min-height:42px;color:var(--text);border-radius:11px;justify-content:center;align-items:center;gap:8px;padding:0 16px;font-size:13.5px;font-weight:500;text-decoration:none;display:inline-flex}.btn:hover:not(:disabled){background:var(--surface-hover)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn--primary{background:var(--accent);color:var(--on-accent);border-color:#0000;font-weight:650}.btn--primary:hover:not(:disabled){background:var(--accent-hover)}.btn--small{min-height:34px;padding:0 12px;font-size:12.5px}.btn--wide{flex:1}.btn--warn{background:var(--warning-soft);border-color:var(--warning-border);color:var(--warning-ink)}.btn--warn:hover:not(:disabled){background:color-mix(in srgb, var(--warning) 18%, transparent);border-color:color-mix(in srgb, var(--warning) 65%, transparent)}.btn--danger{background:var(--danger-soft);border-color:var(--danger-border);color:var(--danger)}.btn--danger:hover:not(:disabled){background:color-mix(in srgb, var(--danger) 17%, transparent);border-color:color-mix(in srgb, var(--danger) 65%, transparent)}.electron-config{border:1px solid var(--border);background:var(--scrim);border-radius:12px;flex-direction:column;gap:4px;padding:12px 14px;display:flex}.electron-config__label{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:11px}.electron-config code{font-family:Cascadia Code,SFMono-Regular,Consolas,monospace;font-size:15px}.shells{flex-direction:column;gap:9px;display:flex}.shell{grid-template-columns:58px 1fr auto;align-items:center;gap:10px;display:grid}.shell__name{color:var(--muted);font-size:12.5px}.shell__bar{background:var(--bar-track);border-radius:999px;height:8px;overflow:hidden}.shell__bar>span{border-radius:inherit;background:linear-gradient(90deg, var(--cat-transition), var(--cat-noble));height:100%;display:block}.shell__count{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12px}.panel-note{color:var(--muted);font-size:13px;line-height:1.6}.trend-list{flex-direction:column;gap:7px;display:flex}.trend-list li{color:var(--muted);border-radius:8px;grid-template-columns:34px 1fr 44px;align-items:center;gap:10px;padding:3px 6px;font-size:12.5px;display:grid}.trend-list li.is-current{background:var(--glass);color:var(--text)}.trend-list__symbol{color:var(--text);font-weight:600}.trend-list__bar{background:var(--bar-track);border-radius:999px;height:7px;overflow:hidden}.trend-list__bar>span{border-radius:inherit;background:var(--bar-color,var(--accent));height:100%;display:block}.trend-list__value{text-align:right;font-variant-numeric:tabular-nums}.hazard-list{flex-direction:column;gap:8px;display:flex}.hazard-list li{border:1px solid var(--border);background:var(--hazard-bg);border-radius:10px;align-items:center;gap:10px;padding:9px 10px;font-size:13px;display:flex}.hazard-code{letter-spacing:.04em;color:var(--hazard-code-ink);background:var(--hazard-code-bg);border-radius:5px;flex:none;padding:2px 6px;font-size:11px;font-weight:700}.sources{border-top:1px solid var(--border);padding-top:12px}.sources__label{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px;font-size:11px;display:block}.sources ul{flex-wrap:wrap;gap:6px;display:flex}.sources li{color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:3px 9px;font-size:11.5px}.table2d-wrap{--table-gutter:16px;height:100%;padding:20px var(--table-gutter) 40px;touch-action:pan-x pan-y;position:relative;overflow:auto}.table2d-zoom{height:100%;position:relative}.table2d-end{display:none}.table2d{width:100%;min-width:1040px;max-width:1400px;transform:translate3d(var(--table-shift-x,0px), var(--table-shift-y,0px), 0) scale(var(--table-zoom,1));transform-origin:0 0;grid-template-columns:repeat(18,minmax(52px,1fr));grid-auto-rows:minmax(58px,auto);gap:5px;margin:0 auto;transition:transform .32s cubic-bezier(.22,1,.36,1);display:grid;position:relative}.table2d-wrap.is-zoomed{scrollbar-width:thin}.table2d-wrap.is-zoomed .table2d{will-change:transform}.cell2d{border:1px solid var(--border);background:linear-gradient(180deg, color-mix(in srgb, var(--cell-accent) 9%, var(--surface-solid)), var(--surface-solid));text-align:left;border-radius:9px;flex-direction:column;justify-content:center;align-items:flex-start;gap:1px;min-height:58px;padding:6px 7px;display:flex;position:relative;overflow:hidden}.cell2d:before{content:"";background:var(--cell-accent);width:100%;height:3px;position:absolute;inset:0 auto auto 0}.cell2d:hover{border-color:color-mix(in srgb, var(--cell-accent) 55%, transparent)}.cell2d.is-dim{opacity:.28}.cell2d.is-selected{border-color:var(--cell-accent);box-shadow:0 0 0 2px color-mix(in srgb, var(--cell-accent) 45%, transparent)}.cell2d__z{color:var(--muted);font-size:10px;line-height:1}.cell2d__symbol{font-size:18px;font-weight:700;line-height:1.1}.cell2d__name{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:9.5px;overflow:hidden}@media (width>=1024px){.table2d-wrap{padding:12px 16px 78px;overflow:auto}.table2d{grid-template-rows:repeat(7,minmax(44px,1fr)) minmax(10px,.3fr) repeat(2,minmax(44px,1fr));grid-template-columns:repeat(18,minmax(0,1fr));gap:clamp(4px,.45vw,8px);width:100%;min-width:0;max-width:none;height:100%;margin:0}.cell2d{min-height:0;padding:8px 9px}.cell2d__symbol{font-size:clamp(17px,1.15vw,24px)}.cell2d__name{font-size:clamp(9.5px,.6vw,12px)}}.lab{height:100%;padding:20px;padding-bottom:max(20px, env(safe-area-inset-bottom));grid-template-columns:minmax(0,1fr);align-content:start;gap:18px;display:grid;overflow-y:auto}.lab__result{grid-column:1/-1}.lab__bench,.lab__result{min-width:0}.lab__head{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:14px;display:flex}.lab__head h1{margin-bottom:4px;font-size:24px;line-height:1.15}.lab__head p{color:var(--muted);max-width:52ch;font-size:13px;line-height:1.5}.lab__counter{border:1px solid var(--border);background:var(--surface-subtle);white-space:nowrap;border-radius:11px;align-items:baseline;gap:4px;padding:8px 12px;display:flex}.lab__counter strong{font-variant-numeric:tabular-nums;font-size:20px}.lab__counter span{color:var(--muted);font-size:12px}.restore{border:1px solid var(--border);background:var(--accent-soft);color:var(--text-soft);border-radius:11px;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:12px;padding:9px 12px;font-size:13px;display:flex}.restore .icon-btn{margin-left:auto}.chamber{border:1px solid var(--border);border-radius:var(--radius);background:radial-gradient(420px 220px at 50% 20%, var(--accent-soft), transparent 70%), var(--scrim-strong);transition:box-shadow .16s,border-color .16s;position:relative;overflow:hidden}.chamber.is-bumping{border-color:var(--danger-strong);animation:.32s bump}@keyframes bump{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.chamber__visual{height:clamp(190px,30vh,280px);margin:14px;position:relative}.chamber__atom{width:34px;height:34px;color:var(--on-category);background:var(--atom-color);box-shadow:0 6px 18px color-mix(in srgb, var(--atom-color) 30%, transparent);will-change:transform;border-radius:50%;place-items:center;margin:-17px 0 0 -17px;font-size:11px;font-weight:700;animation:4.6s ease-in-out infinite float;display:grid;position:absolute}@keyframes float{0%,to{transform:translateY(-3px)}50%{transform:translateY(3px)}}.chamber__empty{color:var(--muted);text-align:center;place-items:center;padding:0 20px;font-size:13px;display:grid;position:absolute;inset:0}.chamber__chips{flex-wrap:wrap;align-items:center;gap:8px;min-height:52px;padding:0 14px 14px;display:flex}.atom-chip{border:1px solid var(--border);background:var(--surface-soft);border-radius:999px;align-items:center;gap:7px;min-height:36px;padding:5px 6px 5px 11px;font-size:13px;display:inline-flex}.atom-chip__symbol{font-weight:700}.atom-chip__count{color:var(--muted);font-variant-numeric:tabular-nums}.atom-chip__add,.atom-chip__remove{background:var(--surface-hover);width:26px;height:26px;color:var(--muted);border:0;border-radius:50%;place-items:center;font-size:14px;line-height:1;display:grid;position:relative}.atom-chip__add:after,.atom-chip__remove:after{content:"";position:absolute;inset:-9px}.atom-chip__remove:hover{background:var(--danger-soft);color:var(--text)}.atom-chip__add:hover:not(:disabled){background:var(--success-soft);color:var(--success-ink)}.atom-chip__add:disabled{opacity:.4}.conditions{flex-wrap:wrap;align-items:center;gap:8px;margin:14px 0;display:flex}.conditions__label{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-right:2px;font-size:11px}@media (width<=1023px){.conditions__label{display:none}.conditions{justify-content:center}}@media (width<=379px){.conditions .chip--condition{padding:6px 8px;font-size:11px}}.chip--condition{border-radius:10px}.chip--condition.is-active{background:var(--success-soft);border-color:var(--success-border);color:var(--success-ink)}.lab__actions{gap:8px;margin-bottom:14px;display:flex}.tray{border-top:1px solid var(--border);background:linear-gradient(180deg, transparent, var(--bg) 32%);padding-top:12px;padding-bottom:4px;position:sticky;bottom:0}.tray__tools{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;display:flex}.tray__search{border:1px solid var(--border);background:var(--surface-soft);min-width:0;height:40px;color:var(--text);border-radius:10px;flex:200px;padding:0 12px;font-size:14px}.tray__search::placeholder{color:var(--muted)}.tray__search:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.tray__empty{color:var(--muted);flex-wrap:wrap;flex:none;align-items:center;gap:8px;margin:0;padding:18px 4px;font-size:13px;display:flex}.tray__scroll{scroll-snap-type:x proximity;touch-action:pan-x;scrollbar-width:thin;gap:8px;padding:4px 2px 8px;display:flex;overflow-x:auto}.tray__chip{border:1px solid var(--border);background:linear-gradient(180deg, color-mix(in srgb, var(--tray-color) 12%, var(--surface-solid)), var(--surface-solid));scroll-snap-align:start;border-radius:11px;flex-direction:column;flex:none;justify-content:center;align-items:center;gap:1px;width:62px;height:64px;display:flex;position:relative}.tray__chip:before{content:"";background:var(--tray-color);border-radius:11px 11px 0 0;width:100%;height:3px;position:absolute;inset:0 auto auto 0}.tray__chip:hover{border-color:color-mix(in srgb, var(--tray-color) 60%, transparent)}.tray__chip.has-count{border-color:color-mix(in srgb, var(--tray-color) 55%, transparent)}.tray__symbol{font-size:18px;font-weight:700;line-height:1.1}.tray__z{color:var(--muted);font-size:9.5px}.tray__count{background:var(--tray-color);min-width:16px;height:16px;color:var(--on-category);border-radius:999px;place-items:center;padding:0 4px;font-size:10px;font-weight:700;display:grid;position:absolute;top:4px;right:5px}.lab__result{position:relative}.result{border:1px solid var(--border);border-radius:var(--radius);background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--veil);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);padding:20px}.result>*+*{margin-top:12px}.result__kicker{letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-size:10.5px;display:inline-block}.result h2{font-size:21px;line-height:1.25}.result p{color:var(--text-soft);font-size:13.5px;line-height:1.62}.result--ok{border-color:var(--success-border);box-shadow:inset 0 0 60px var(--success-soft)}.result--ok .result__kicker{color:var(--success)}.result--inert{border-color:var(--danger-border)}.result--inert .result__kicker{color:var(--danger)}.result--idle h2{color:var(--muted)}.equation{background:var(--scrim-strong);border:1px solid var(--border);font-variant-numeric:tabular-nums;border-radius:11px;flex-wrap:wrap;align-items:baseline;gap:6px;padding:12px 14px;font-size:18px;display:flex}.equation__species{align-items:baseline;gap:2px;display:inline-flex}.equation__op{color:var(--muted);margin:0 3px}.equation__coeff:not(:empty){font-weight:600}.result__facts{border:1px solid var(--border);background:var(--border);border-radius:11px;gap:1px;display:grid;overflow:hidden}.result__facts>div{background:var(--surface-raised);justify-content:space-between;align-items:baseline;gap:14px;padding:9px 12px;font-size:12.5px;display:flex}.result__facts span{color:var(--muted)}.result__facts strong{text-align:right;font-weight:500}.result__observation{color:var(--text)!important}.result__leftover{background:var(--warning-soft);border:1px solid var(--warning-border);border-radius:10px;padding:10px 12px}.result__aside{color:var(--muted)!important;font-size:12.5px!important}.result__sources{border-top:1px solid var(--border);padding-top:10px}.result__sources>span{text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px;font-size:10.5px;display:block}.result__sources ul{flex-wrap:wrap;gap:6px;display:flex}.result__sources li{color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:2px 8px;font-size:11px}.result__actions{flex-wrap:wrap;gap:8px;display:flex}.quiz{height:100%;padding:24px 20px 48px;padding-bottom:max(48px, env(safe-area-inset-bottom));overflow-y:auto}.quiz--pick,.quiz--run,.quiz--done{max-width:780px;margin:0 auto}.quiz__head h1{margin-bottom:6px;font-size:26px}.quiz__head p{color:var(--muted);max-width:60ch;font-size:13.5px;line-height:1.55}.pill{border:1px solid var(--border);background:var(--surface-soft);color:var(--muted);border-radius:999px;align-items:center;gap:6px;min-height:32px;margin-top:10px;padding:5px 11px;font-size:11.5px;display:inline-flex}.level-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0;display:grid}.level-card{text-align:left;border:1px solid var(--border);background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--scrim);border-radius:14px;flex-direction:column;align-items:flex-start;gap:6px;min-height:172px;padding:18px 16px;display:flex}.level-card:hover{border-color:var(--accent-border);transform:translateY(-1px)}.level-card__label{font-size:18px;font-weight:700}.level-card__blurb{color:var(--muted);font-size:12.5px;line-height:1.5}.level-card__meta{color:var(--muted);font-variant-numeric:tabular-nums;margin-top:auto;font-size:11.5px}.level-card__cta{color:var(--accent);font-size:13px;font-weight:600}.quiz__note{color:var(--muted);border-top:1px solid var(--border);padding-top:14px;font-size:12px;line-height:1.6}.quiz__progress{background:var(--bar-track);border-radius:999px;height:4px;margin-bottom:18px;overflow:hidden}.quiz__progress>span{background:linear-gradient(90deg, var(--accent), var(--cat-noble));height:100%;transition:width .24s;display:block}.quiz__run-head{align-items:center;gap:10px;margin-bottom:16px;display:flex}.quiz__run-head .pill{text-transform:capitalize;margin-top:0}.quiz__count{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12.5px}.quiz__exit{border:1px solid var(--border);color:var(--muted);background:0 0;border-radius:9px;min-height:38px;margin-left:auto;padding:8px 12px;font-size:12.5px}.question{border:1px solid var(--border);background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--veil);border-radius:16px;padding:22px}.question h2{margin-bottom:18px;font-size:19px;line-height:1.45}.options{flex-direction:column;gap:9px;display:flex}.option{text-align:left;border:1px solid var(--border);background:var(--surface-subtle);border-radius:11px;align-items:center;gap:12px;min-height:50px;padding:12px 14px;font-size:14px;line-height:1.4;display:flex}.option:hover:not(:disabled){background:var(--surface-hover);border-color:var(--border-strong)}.option__key{border:1px solid var(--border);background:var(--scrim);width:26px;height:26px;color:var(--muted);border-radius:7px;flex:none;place-items:center;font-size:11.5px;display:grid}.option.is-selected{border-color:var(--accent-border);background:var(--accent-soft)}.option.is-correct{border-color:var(--success-strong);background:var(--success-soft)}.option.is-wrong{border-color:var(--danger-strong);background:var(--danger-soft)}.option.is-muted{opacity:.45}.option.is-correct .option__key{background:var(--success-strong);color:var(--on-success);border-color:#0000}.option.is-wrong .option__key{background:var(--danger-strong);color:var(--on-danger);border-color:#0000}.question .quiz__actions{margin-top:18px}.feedback{border-radius:11px;margin-top:14px;padding:12px 14px;font-size:13px;line-height:1.6}.feedback--retry{background:var(--warning-soft);border:1px solid var(--warning-border)}.feedback--ok{background:var(--success-soft);border:1px solid var(--success-border)}.feedback--bad{background:var(--danger-soft);border:1px solid var(--danger-border)}.feedback strong{font-weight:650}.quiz__actions{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.quiz__back{color:var(--muted);background:0 0;border:0;margin-top:18px;padding:8px 0;font-size:13px}.quiz__back:hover{color:var(--text)}.quiz--done .score{text-align:center;border:1px solid var(--border);background:linear-gradient(180deg, var(--glass-top), var(--glass-bottom)), var(--veil);border-radius:18px;padding:28px 20px}.score__kicker{text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-size:11px}.score__value{font-variant-numeric:tabular-nums;font-size:64px;font-weight:700;line-height:1.05}.score__value span{color:var(--muted);font-size:28px;font-weight:500}.score__percent{color:var(--accent);font-size:16px}.score__level{color:var(--muted);text-transform:capitalize;margin-top:4px;font-size:12px}.score__list{border:1px solid var(--border);background:var(--border);border-radius:12px;flex-direction:column;gap:1px;margin-top:16px;display:flex;overflow:hidden}.score__list li{background:var(--surface-raised);grid-template-columns:28px 1fr 24px;align-items:center;gap:10px;padding:11px 13px;font-size:12.5px;display:grid}.score__num{color:var(--muted);font-variant-numeric:tabular-nums}.score__prompt{line-height:1.45}.score__mark{text-align:right;font-weight:700}.score__list li.is-correct .score__mark{color:var(--success)}.score__list li.is-wrong .score__mark{color:var(--danger)}.score__list li.is-wrong{background:var(--danger-soft)}@media (width<=1023px){.element-panel{width:100%;height:62dvh;padding-bottom:env(safe-area-inset-bottom);border-bottom:0;border-radius:20px 20px 0 0;inset:auto 0 0;transform:translateY(100%)}.element-panel.is-open{transform:translateY(0)}.element-panel.is-switching{transform:translateY(100%)}.element-panel__handle{background:var(--handle);border-radius:999px;flex:none;width:42px;height:4px;margin:8px auto 0;display:block}.element-panel__head{padding-top:12px}.lab{grid-template-columns:minmax(0,1fr);padding:16px}.lab__result{order:2}.lab__actions{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.lab__actions .btn{min-height:44px;padding:0 10px}.lab__actions .btn--danger{order:1}.lab__actions .btn--warn{order:2}.lab__actions .btn--primary{order:3}.table2d-wrap{padding-bottom:0}.table2d-end{height:16px;display:block}.table2d{box-sizing:content-box;border-right:var(--table-gutter) solid transparent;row-gap:2px}}@media (width<=720px){.topbar{padding:8px 12px 10px}.topbar__row{flex-wrap:wrap;gap:8px}.brand__text,.mode-nav{display:none}.bottom-nav{padding:4px 6px calc(4px + env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--topbar-bg);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);flex:none;grid-template-columns:repeat(4,minmax(0,1fr));gap:2px;display:grid}.bottom-nav__item{min-height:48px;color:var(--muted);letter-spacing:-.01em;text-align:center;background:0 0;border:0;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:2px;padding:6px 2px 4px;font-size:clamp(10px,2.9vw,11px);line-height:1.1;display:flex}.bottom-nav__icon{width:23px;height:23px}.bottom-nav__label{white-space:nowrap}.bottom-nav__item.is-active{background:var(--surface-hover);color:var(--accent)}.search{flex:1;order:1;max-width:none}.toolbar{order:2;margin-left:0}.tool-btn--theme{width:44px;height:44px;padding:0}.tool-btn__label,.search__kbd{display:none}.chipbar{padding:8px 0 10px}.hint{max-width:none;left:12px;right:12px;bottom:max(12px, env(safe-area-inset-bottom));font-size:11.5px}.element-panel{height:68dvh}.element-panel__symbol{width:58px;height:58px;font-size:25px}.element-panel__head h2{font-size:19px}.lab{gap:14px;padding:12px}.lab__head{flex-direction:column;gap:10px}.lab__head h1{font-size:21px}.lab__actions .btn{white-space:nowrap;padding:0 6px;font-size:12.5px}.tray__tools{flex-wrap:nowrap}.tray__search{flex:140px;height:44px;font-size:16px}.chamber__visual{height:180px}.quiz{padding:16px 12px 40px}.quiz__head h1{font-size:22px}.level-grid{grid-template-columns:minmax(0,1fr)}.level-card{min-height:0}.question{padding:16px}.question h2{font-size:17px}.option{font-size:13.5px}.score__value{font-size:52px}.table2d-wrap{--table-gutter:10px;padding:12px var(--table-gutter) 0}}@media (height<=520px) and (orientation:landscape){.topbar{padding-top:4px}.chipbar{padding:4px 0 6px}.hint{display:none}.element-panel{height:92dvh}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.conn-pill{border:1px solid var(--border);letter-spacing:.02em;white-space:nowrap;border-radius:999px;align-items:center;padding:5px 10px;font-size:11px;font-weight:600;display:inline-flex}.conn-pill--ready{color:var(--success);border-color:var(--success-border);background:var(--success-soft)}.conn-pill--offline{color:var(--warning-ink);border-color:var(--warning-border);background:var(--warning-soft)}.error-screen{text-align:center;place-content:center;gap:14px;width:min(560px,100%);min-height:100dvh;margin:0 auto;padding:32px 20px;display:grid}.error-screen h1{font-size:clamp(22px,4vw,30px)}.error-screen p{color:var(--muted);line-height:1.65}.error-screen details{text-align:left;border:1px solid var(--border);background:var(--glass);border-radius:12px;padding:12px 14px}.error-screen summary{cursor:pointer;color:var(--muted);font-size:13px}.error-screen pre{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--muted);margin:10px 0 0;font-size:12px}.about{overscroll-behavior:contain;height:100%;padding:28px 20px 60px;overflow-y:auto}.about__hero,.about__card,.about__foot{width:min(860px,100%);margin-inline:auto}.about__hero{padding:6px 2px 22px}.about__eyebrow{color:var(--accent);letter-spacing:.14em;text-transform:uppercase;font-size:12px;font-weight:700}.about__hero h1{letter-spacing:-.02em;margin-top:6px;font-size:clamp(28px,5vw,40px)}.about__lede{max-width:62ch;color:var(--muted);margin-top:10px;line-height:1.7}.about a{color:var(--accent);text-underline-offset:2px}.about code{background:var(--surface-soft);border-radius:5px;padding:1px 5px;font-size:.9em}.about__stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:22px;display:grid}.about__stats>div{border:1px solid var(--border);background:var(--glass);border-radius:14px;padding:14px}.about__stats dt{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-size:11px;font-weight:600}.about__stats dd{font-variant-numeric:tabular-nums;margin-top:4px;font-size:24px;font-weight:700}.about__card{border:1px solid var(--border);background:var(--surface-subtle);border-radius:18px;margin-bottom:14px;padding:22px}.about__card h2{margin-bottom:10px;font-size:17px}.about__card p{color:var(--muted);margin-bottom:10px;line-height:1.7}.about__card p:last-child{margin-bottom:0}.about__sources,.about__errors ul{margin:12px 0;padding:0;list-style:none}.about__sources li{border-bottom:1px dashed var(--border);justify-content:space-between;align-items:baseline;gap:12px;padding:8px 0;display:flex}.about__sources li:last-child{border-bottom:0}.about__muted{color:var(--muted);font-size:12.5px}.about__storage>div{border-bottom:1px dashed var(--border);gap:2px;padding:8px 0;display:grid}.about__storage>div:last-child{border-bottom:0}.about__storage dt{color:var(--text)}.about__storage dd{color:var(--muted);font-size:13px}.about__errors summary{cursor:pointer;color:var(--accent);font-size:13px}.about__errors li{color:var(--muted);gap:2px;margin-bottom:8px;font-size:12.5px;display:grid}.about__errors time{font-variant-numeric:tabular-nums;opacity:.7}.about__actions{flex-wrap:wrap;gap:8px;margin-top:12px;display:flex}.about__foot p{color:var(--muted);text-align:center;padding-top:20px;font-size:12px}@media (width<=560px){.about{padding:20px 14px 48px}.about__stats{grid-template-columns:repeat(2,minmax(0,1fr))}.about__card{padding:18px}}.pwa-banner{background:linear-gradient(90deg, var(--accent-soft), var(--success-soft));border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:7px 16px;font-size:12.5px;display:flex}.pwa-banner__text{min-width:0;color:var(--muted);flex:1}.pwa-banner .btn,.pwa-banner .icon-btn{flex-shrink:0}.route-loading{height:100%;color:var(--muted);place-items:center;font-size:14px;display:grid}@media (width<=720px){.pwa-banner{padding:8px 12px}.pwa-banner__text{font-size:12px}}
