:root{--bg:#0c0f14;--bg-2:#11151c;--panel:#151a23;--panel-2:#1b2130;--line:#262e3d;--line-2:#323c50;--text:#e6e9ef;--text-2:#a7b0c0;--text-3:#8590a3;--client:#7aa2ff;--server:#f2b45a;--user:#6fd3a5;--llm:#c792ea;--ok:#5fd08a;--warn:#f0c35a;--err:#ff6b7a;--info:#7cc7ff;--new:#6fd3a5;--accent:#7aa2ff;--mono:"JetBrains Mono Variable", ui-monospace, "SF Mono", Menlo, Consolas, monospace;--sans:"Inter Variable", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;--ease-out:cubic-bezier(.16, 1, .3, 1);--radius:10px;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:var(--bg);color:var(--text);font:14px/1.55 var(--sans);font-feature-settings:"cv11", "ss03";-webkit-font-smoothing:antialiased;caret-color:var(--accent)}::selection{color:var(--text);background:#7aa2ff52}*{scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--line-2);background-clip:padding-box;border:3px solid #0000;border-radius:999px}::-webkit-scrollbar-thumb:hover{background-color:var(--text-3)}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-corner{background:0 0}input[type=checkbox]{accent-color:var(--accent)}kbd{font-family:var(--mono);border:1px solid var(--line-2);color:var(--text-2);background:var(--panel-2);border-bottom-width:2px;border-radius:4px;padding:2px 5px;font-size:10.5px;line-height:1}.icon{vertical-align:-2px;flex-shrink:0}a{color:var(--accent);text-decoration:none}a:hover{text-underline-offset:3px;text-decoration:underline;text-decoration-thickness:1px}code,pre,textarea,.mono{font-family:var(--mono);font-size:12.5px}code{background:var(--panel-2);border:1px solid var(--line);border-radius:5px;padding:0 4px}button{font:inherit;color:inherit;cursor:pointer}h1,h2,h3{text-wrap:balance;margin:0;line-height:1.2}p{text-wrap:pretty}.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}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.topbar{z-index:10;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);background:#0c0f14d9;align-items:center;gap:24px;height:56px;padding:0 24px;display:flex;position:sticky;top:0}.brand{color:var(--text);letter-spacing:-.01em;align-items:center;gap:10px;font-weight:650;display:flex}.brand:hover{text-decoration:none}.brand-text{white-space:nowrap;font-family:var(--mono);color:var(--text-2);font-size:15px;font-weight:500}.brand-text b{color:var(--text);letter-spacing:-.02em;font-weight:700}.logo-mark{flex-shrink:0;display:block}.logo-packet{opacity:0}.brand:hover .logo-packet{animation:logo-send 1.1s var(--ease-out) infinite}@keyframes logo-send{0%{opacity:0;transform:translate(0)}15%{opacity:1}70%{opacity:1;transform:translate(10px)}to{opacity:0;transform:translate(10px)}}.nav{gap:4px;display:flex}.nav a{white-space:nowrap;color:var(--text-2);border-radius:8px;padding:6px 12px}.nav a:hover{color:var(--text);background:var(--panel);text-decoration:none}.nav a.active{color:var(--text);background:var(--panel-2);box-shadow:inset 0 0 0 1px var(--line)}.topbar .spacer{flex:1}.topbar .meta{color:var(--text-3);white-space:nowrap;text-overflow:ellipsis;min-width:0;font-size:12px;overflow:hidden}.page{max-width:1440px;margin:0 auto;padding:28px 24px 64px}.page-head{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:20px;display:flex}.page-head h1{letter-spacing:-.02em;font-size:26px}.page-head p{color:var(--text-2);max-width:720px;margin:6px 0 0}.footer{border-top:1px solid var(--line);color:var(--text-3);text-align:center;padding:24px 24px 28px;font-size:12px}.footer p{max-width:760px;margin:10px auto 0}.footer-links{flex-wrap:wrap;justify-content:center;gap:6px 20px;font-size:13px;display:flex}.footer-links a{color:var(--text-2)}.footer-links a:hover{color:var(--text)}.footer p.arcade-credit{color:var(--text-2);margin-top:18px;font-size:13px}.arcade-logo{color:var(--text);transition:opacity .2s var(--ease-out);margin:0 2px;display:inline-block}.arcade-logo:hover{opacity:.8}.arcade-logo svg{vertical-align:baseline;display:inline-block}.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}.panel-head>.row{flex-wrap:wrap;justify-content:flex-end;min-width:0}.panel-head select{max-width:100%}.panel-head{border-bottom:1px solid var(--line);color:var(--text-2);text-transform:uppercase;letter-spacing:.06em;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;font-size:12px;display:flex}.panel-body{padding:14px}.btn{background:var(--panel-2);border:1px solid var(--line-2);color:var(--text);white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:6px;padding:6px 12px;transition:border-color .15s,background-color .15s,transform .1s;display:inline-flex}.btn:hover{border-color:var(--text-3);text-decoration:none}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.4;cursor:default}.btn.primary:hover{background:#93b4ff;border-color:#93b4ff}.btn.primary{background:var(--accent);border-color:var(--accent);color:#0b1020;font-weight:600}.btn.ghost{color:var(--text-2);background:0 0;border-color:#0000}.btn.ghost:hover{color:var(--text);background:var(--panel-2)}.btn.sm{padding:3px 9px;font-size:12px}.row{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.muted{color:var(--text-2)}.faint{color:var(--text-3)}.small{font-size:12px}.chips{background:var(--bg-2);border:1px solid var(--line);border-radius:9px;gap:2px;padding:3px;display:inline-flex}.chip{color:var(--text-2);font-family:var(--mono);background:0 0;border:0;border-radius:7px;padding:4px 10px;font-size:12px}.chip:hover:not(:disabled){color:var(--text)}.chip.on{background:var(--panel-2);color:var(--text);box-shadow:inset 0 0 0 1px var(--line-2)}.chip{white-space:nowrap}.chip.draft{font-style:italic}.badge{font-size:10.5px;font-family:var(--sans);vertical-align:1px;white-space:nowrap;border-radius:999px;align-items:center;gap:4px;padding:0 7px;font-weight:600;line-height:17px;display:inline-flex}.badge.new{color:var(--new);background:#6fd3a524}.badge.since{background:var(--panel-2);color:var(--text-3);font-weight:500}.badge.unknown{color:var(--err);background:#ff6b7a24}.badge.added{color:var(--ok);background:#5fd08a24}.badge.removed{color:var(--err);background:#ff6b7a24}.badge.deprecated{color:var(--warn);background:#f0c35a1f}.badge.changed{color:var(--warn);background:#f0c35a24}.badge.renamed{color:var(--info);background:#7cc7ff24}select,input[type=text],input[type=number],input[type=search]{background:var(--bg-2);border:1px solid var(--line-2);color:var(--text);font:inherit;border-radius:8px;padding:6px 10px}.json{background:var(--bg-2);border:1px solid var(--line);white-space:pre;line-height:1.6;font-family:var(--mono);border-radius:8px;margin:0;padding:12px 14px;font-size:12.5px;overflow:auto}.j-key{color:#9fb4d8}.j-str{color:#b5e07a}.j-num{color:#f6a96b}.j-bool{color:#e59bff}.j-null,.j-punc{color:var(--text-3)}.j-unknown .j-key{color:var(--err);text-underline-offset:3px;-webkit-text-decoration:underline wavy #ff6b7a99;text-decoration:underline wavy #ff6b7a99}.j-new .j-key{color:var(--new)}.json .badge{margin-left:8px}.seq{padding-bottom:8px;position:relative}.seq-head{z-index:2;background:var(--panel);border-bottom:1px solid var(--line);border-radius:var(--radius) var(--radius) 0 0;display:grid;position:sticky;top:56px}.actor{text-align:center;padding:12px 6px 10px}.actor .dot{color:#0b1020;border-radius:9px;place-items:center;width:30px;height:30px;margin:0 auto 6px;font-size:13px;font-weight:700;display:grid}.actor .name{font-size:13px;font-weight:600}.actor .sub{color:var(--text-3);font-size:11px}.seq-body{padding:10px 0;position:relative}.lifeline{border-left:1px dashed var(--line-2);width:0;position:absolute;top:0;bottom:0}.seq-row{cursor:pointer;border-radius:8px;height:50px;margin:0 6px;position:relative}.seq-row:hover{background:#ffffff06}.seq-row.current{background:#7aa2ff12}.seq-row.future{opacity:.32}.seq-row:focus-visible{outline-offset:-2px}.arrow-marker{vertical-align:-1px;color:var(--warn);margin-left:6px;display:inline-flex}.seq-row .idx{font-variant-numeric:tabular-nums;font-family:var(--mono);color:var(--text-3);font-size:11px;position:absolute;top:16px;left:6px}.arrow{border-top:2px solid;height:0;position:absolute;top:30px}.arrow.response{border-top-style:dashed}.arrow.notification{border-top-style:dotted;border-top-width:3px}.arrow.ui{opacity:.7;border-top-width:1px}.arrow:after{content:"";border:6px solid #0000;position:absolute;top:-7px}.arrow.right:after{border-left:9px solid;border-right:0;right:-2px}.arrow.left:after{border-left:0;border-right:9px solid;left:-2px}.arrow-label{white-space:nowrap;font-family:var(--mono);color:var(--text);text-overflow:ellipsis;max-width:46%;font-size:12px;position:absolute;top:6px;overflow:hidden;transform:translate(-50%)}.arrow-label .k{color:var(--text-3);text-transform:uppercase;letter-spacing:.05em;font-size:10.5px;font-family:var(--sans);margin-right:6px}.packet{background:currentColor;border-radius:50%;width:10px;height:10px;position:absolute;top:-6px;box-shadow:0 0 12px,0 0 3px}.packet.go-right{animation:.75s cubic-bezier(.5,0,.2,1) forwards fly-right}.packet.go-left{animation:.75s cubic-bezier(.5,0,.2,1) forwards fly-left}@keyframes fly-right{0%{left:-5px}to{left:calc(100% - 5px)}}@keyframes fly-left{0%{left:calc(100% - 5px)}to{left:-5px}}@media (prefers-reduced-motion:reduce){.packet{display:none;animation:none!important}}.legend{border-top:1px solid var(--line);color:var(--text-3);flex-wrap:wrap;gap:16px;padding:10px 14px;font-size:11.5px;display:flex}.legend span{align-items:center;gap:6px;display:inline-flex}.legend i{border-top:2px solid var(--text-2);width:22px;display:inline-block}.learn{grid-template-columns:220px minmax(0,1fr) minmax(0,1fr);align-items:start;gap:16px;display:grid}.rail{flex-direction:column;gap:2px;display:flex;position:sticky;top:76px}.rail a{color:var(--text-2);border-radius:8px;padding:7px 10px;display:block}.rail a:hover{background:var(--panel);color:var(--text);text-decoration:none}.rail a.on{background:var(--panel-2);color:var(--text)}.rail a.locked{opacity:.45}.rail .t{justify-content:space-between;align-items:center;gap:8px;font-weight:550;display:flex}.rail .s{color:var(--text-3);font-size:11.5px;line-height:1.35}.rail-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);margin:0 0 8px 10px;font-size:11px}.inspector{flex-direction:column;gap:12px;max-height:calc(100vh - 96px);display:flex;position:sticky;top:76px;overflow:auto}.note{font-size:14px;line-height:1.6}.note p{margin:0}.step-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.step-foot{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding-top:10px;display:flex}.step-link{align-items:center;gap:6px;font-size:12.5px;display:inline-flex}.step-foot .btn.ghost{margin-right:-8px}.step-meta{flex-wrap:wrap;justify-content:space-between;gap:8px;display:flex}.step-title{font-family:var(--mono);align-items:center;gap:8px;font-size:14px;display:flex}.who{font-family:var(--sans);color:#0b1020;border-radius:999px;padding:1px 8px;font-size:11px;font-weight:650}.controls{align-items:center;gap:6px;display:flex}.progress-dots{flex-wrap:wrap;gap:4px;display:flex}.progress-dots button{background:var(--line-2);border:0;border-radius:50%;width:8px;height:8px;padding:0}.progress-dots button.done{background:var(--text-3)}.progress-dots button.on{background:var(--accent)}.progress-dots button.ex{box-shadow:0 0 0 2px #f0c35a99}.locked-card{text-align:center;padding:40px}.exercise{border-radius:var(--radius);background:linear-gradient(#f0c35a0f,#0000 60%);border:1px solid #f0c35a59}.exercise .panel-head{color:var(--warn);border-color:#f0c35a40}.exercise.solved{background:linear-gradient(#5fd08a12,#0000 60%);border-color:#5fd08a73}.exercise.solved .panel-head{color:var(--ok)}.editor{resize:vertical;background:var(--bg-2);width:100%;min-height:200px;color:var(--text);border:1px solid var(--line-2);tab-size:2;border-radius:8px;padding:12px;line-height:1.55}.issues{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.issue{grid-template-columns:18px minmax(0,1fr);align-items:start;gap:8px;font-size:13px;display:grid}.issue .ic{justify-content:center;padding-top:2px;display:flex}.issue.error .ic{color:var(--err)}.issue.warning .ic{color:var(--warn)}.issue.info .ic{color:var(--info)}.issue.ok .ic{color:var(--ok)}.issue code{font-size:12px}.display{border-radius:var(--radius);border:1px solid var(--line-2);color:#1b1f27;background:#f6f7f9;font-size:13px;overflow:hidden}.display .bar{color:#5a6375;background:#e7eaf0;align-items:center;gap:8px;padding:8px 12px;font-size:12px;display:flex}.display .bar i{background:#c8ced9;border-radius:50%;width:9px;height:9px;display:inline-block}.display .content{flex-direction:column;gap:10px;padding:14px 16px;display:flex}.display label{color:#3b4352;flex-direction:column;gap:4px;font-size:12px;font-weight:600;display:flex}.display label.inline{flex-direction:row;align-items:center;gap:8px}.display select,.display input[type=text],.display input[type=number]{color:#1b1f27;background:#fff;border:1px solid #c8ced9;font-weight:400}.display .actions{justify-content:flex-end;gap:8px;display:flex}.display .dbtn{color:#1b1f27;background:#fff;border:1px solid #c8ced9;border-radius:7px;padding:5px 12px}.display .dbtn.p{color:#fff;background:#1b1f27;border-color:#1b1f27}.display .quote{font-family:var(--mono);white-space:pre-wrap;background:#fff;border:1px solid #dde1e8;border-radius:7px;padding:10px;font-size:12px}.display .url{font-family:var(--mono);color:#1b1f27;background:#fff;border:1px solid #c8ced9;border-radius:999px;flex:1;padding:3px 12px;font-size:12px}.display.dark{background:var(--bg-2);color:var(--text);border-color:var(--line)}.display.dark .bar{background:var(--panel-2);color:var(--text-2)}.display.dark .content{font-family:var(--mono);white-space:pre-wrap;font-size:12.5px}.diff-table{border-collapse:collapse;width:100%;font-family:var(--mono);table-layout:fixed;font-size:12px}.diff-table td{white-space:pre-wrap;word-break:break-word;vertical-align:top;padding:0 10px;line-height:1.6}.diff-table td+td{border-left:1px solid var(--line)}.diff-table tr.del td:first-child,.diff-table tr.mod td:first-child{background:#ff6b7a1a}.diff-table tr.add td:last-child,.diff-table tr.mod td:last-child{background:#5fd08a1a}.diff-table th{text-align:left;font-family:var(--sans);border-bottom:1px solid var(--line);color:var(--text-2);padding:8px 10px;font-weight:600}.changes{grid-template-columns:320px minmax(0,1fr);align-items:start;gap:16px;display:grid}.type-list{max-height:calc(100vh - 220px);overflow:auto}.type-list button{text-align:left;width:100%;font-family:var(--mono);color:var(--text-2);background:0 0;border:0;justify-content:space-between;align-items:center;gap:8px;padding:6px 12px;font-size:12.5px;display:flex}.type-list button:hover{background:var(--panel-2);color:var(--text)}.type-list button.on{color:var(--text);background:#7aa2ff1f}.type-list h5{text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);justify-content:space-between;margin:12px 12px 4px;font-size:11px;display:flex}.change-list{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.change-list li{flex-wrap:wrap;align-items:baseline;gap:2px 10px;min-width:0;font-size:13px;display:flex}.change-list li>*{overflow-wrap:anywhere;min-width:0}.matrix{border-collapse:collapse;width:100%;font-size:13px}.matrix th,.matrix td{border-bottom:1px solid var(--line);text-align:center;padding:6px 10px}.matrix th:first-child,.matrix td:first-child{text-align:left;font-family:var(--mono);font-size:12.5px}.matrix th{color:var(--text-2);font-weight:600;font-family:var(--mono);background:var(--panel);z-index:1;font-size:12px;position:sticky;top:0}.matrix .cell{background:var(--line);border-radius:4px;width:26px;height:14px;display:inline-block}.matrix .cell.on{background:var(--client)}.matrix .cell.on.s2c{background:var(--server)}.matrix .cell.on.both{background:linear-gradient(90deg, var(--client) 50%, var(--server) 50%)}.matrix .cell.on.intro{box-shadow:0 0 0 2px var(--new)}.matrix .cell.gone{background:repeating-linear-gradient(45deg,#ff6b7a59 0 3px,#0000 3px 6px)}.matrix tr:hover td{background:#ffffff05}.timeline{grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;display:grid}.release{padding:14px}.release h3{font-family:var(--mono);justify-content:space-between;align-items:center;font-size:15px;display:flex}.release ul{color:var(--text-2);flex-direction:column;gap:4px;margin:10px 0 0;padding-left:18px;font-size:12.5px;display:flex}.release{flex-direction:column;display:flex}.release.in-range{border-color:var(--accent)}.release-link{color:var(--text-3);align-items:center;gap:5px;margin-top:auto;padding-top:12px;font-size:12px;display:inline-flex}.release-link:hover{color:var(--accent)}.tabs{border-bottom:1px solid var(--line);gap:2px;margin-bottom:16px;display:flex}.tabs button{color:var(--text-2);background:0 0;border:0;border-bottom:2px solid #0000;margin-bottom:-1px;padding:8px 14px}.tabs button:hover{color:var(--text)}.tabs button.on{color:var(--text);border-bottom-color:var(--accent)}.stat{flex-direction:column;gap:2px;padding:12px 16px;display:flex}.stat b{font-size:22px;font-family:var(--mono);font-variant-numeric:tabular-nums}.stat span{color:var(--text-3);font-size:12px}.stats{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px;display:grid}.lint{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:16px;display:grid}.verdicts{flex-direction:column;gap:10px;display:flex}.fingerprint{border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);align-items:flex-start;gap:10px;padding:12px 14px;line-height:1.5;display:flex}.fingerprint>.icon{flex:none;margin-top:3px}.fingerprint.pass>.icon{color:var(--ok)}.fingerprint.warn>.icon{color:var(--warn)}.fingerprint.fail>.icon{color:var(--err)}.verdict{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel)}.verdict-head{text-align:left;border-radius:var(--radius);background:0 0;border:0;justify-content:space-between;align-items:center;gap:12px;width:100%;padding:10px 14px;display:flex}.verdict-head:hover{background:#ffffff05}.verdict-head .v{font-family:var(--mono);font-weight:600}.verdict-head .s{align-items:center;gap:5px;font-size:12px;font-weight:600;display:inline-flex}.verdict.pass .s{color:var(--ok)}.verdict.warn .s{color:var(--warn)}.verdict.fail .s{color:var(--err)}.verdict.fail{border-color:#ff6b7a59}.verdict.pass{border-color:#5fd08a4d}.verdict-body{padding:0 14px 14px}.bug-outro{margin:-8px 0 16px}.bug-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;display:grid}.bug-card{color:var(--text);flex-direction:column;gap:8px;padding:16px;display:flex}.bug-card:hover{border-color:var(--line-2);text-decoration:none}.bug-card h3{justify-content:space-between;gap:8px;font-size:16px;display:flex}.bug-card p{color:var(--text-2);margin:0;font-size:13px}.difficulty{color:var(--text-3);white-space:nowrap;align-items:center;gap:6px;font-size:11.5px;font-weight:500;display:inline-flex}.difficulty .pips{gap:2px;display:inline-flex}.difficulty .pips i{background:var(--line-2);border-radius:2px;width:4px;height:10px}.difficulty .pips i.on{background:var(--warn)}.solved-mark{color:var(--ok);white-space:nowrap;align-items:center;gap:4px;font-size:12px;font-weight:600;display:inline-flex}.back-link{align-items:center;gap:4px;display:inline-flex}.transcript{flex-direction:column;gap:10px;display:flex}.tline{border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);transition:border-color .15s;overflow:hidden}.tline[tabindex="0"]:hover{border-color:var(--line-2)}.tline-head{border-bottom:1px solid var(--line);align-items:center;gap:10px;padding:8px 12px;font-size:12.5px;display:flex}.tline-head .lbl{font-family:var(--mono)}.tline-head .spacer{flex:1}.tline .json{border:0;border-radius:0}.tline.picked-wrong{border-color:#ff6b7a80}.tline.culprit{border-color:var(--err);box-shadow:0 0 0 3px #ff6b7a1f}.tline.culprit.found{border-color:var(--ok);box-shadow:0 0 0 3px #5fd08a26}.bug-layout{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:start;gap:16px;display:grid}.callout{border-radius:var(--radius);border:1px solid var(--line);background:var(--panel);padding:14px 16px}.callout.good{border-color:#5fd08a73}.callout.bad{border-color:#ff6b7a73}.callout.warn{border-color:#f0c35a73}.callout h3{margin-bottom:6px;font-size:15px}.kind-tag{text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);font-size:11px}.hero{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);align-items:center;gap:40px;padding:24px 0 40px;display:grid}.hero h1{letter-spacing:-.03em;font-size:50px;font-weight:650;line-height:1.05}.hero h1 .dim{color:var(--text-3)}.hero p{color:var(--text-2);max-width:520px;margin:16px 0 24px;font-size:16px}.hero-demo{overflow:hidden}.cards{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.card{color:var(--text);flex-direction:column;gap:8px;padding:18px;transition:border-color .15s;display:flex}.card:hover{border-color:var(--line-2);text-decoration:none}.card .for{color:var(--text-3);margin-top:auto;padding-top:6px;font-size:12px}.card h3{font-size:17px}.card p{color:var(--text-2);margin:0;font-size:13px}.section-title{text-transform:uppercase;letter-spacing:.08em;color:var(--text-3);margin:40px 0 14px;font-size:13px}.eco{border-top:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));margin:0;padding:0;list-style:none;display:grid}.eco li{border-bottom:1px solid var(--line);flex-direction:column;gap:2px;padding:14px 0;display:flex}.eco li:nth-child(odd){padding-right:24px}.eco a{align-items:center;gap:6px;width:fit-content;font-size:15px;font-weight:600;display:inline-flex}.eco span{color:var(--text-2);font-size:13px}.term{color:inherit;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;-webkit-text-decoration-color:var(--text-3);text-decoration-color:var(--text-3);text-underline-offset:3px;cursor:help;text-decoration-thickness:1px}.term:hover,.term:focus-visible{color:var(--text);-webkit-text-decoration:underline dotted;text-decoration:underline dotted;-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent)}.term-card{z-index:50;background:var(--panel-2);border:1px solid var(--line-2);width:min(300px,100vw - 16px);color:var(--text);animation:term-in .16s var(--ease-out);border-radius:10px;padding:12px 14px;font-size:13px;line-height:1.5;position:fixed;box-shadow:0 10px 28px #00000073}.term-card strong{margin-bottom:4px;display:block}.term-card p{color:var(--text-2);margin:0}.term-hint{color:var(--text-3);margin-top:8px;font-size:11.5px;display:block}@keyframes term-in{0%{opacity:0;transform:translateY(3px)}}.glossary{border-top:1px solid var(--line);max-width:860px;margin:0}.gloss-entry{border-bottom:1px solid var(--line);border-radius:8px;grid-template-columns:200px minmax(0,1fr);gap:24px;margin:0 -12px;padding:16px 12px;scroll-margin-top:80px;display:grid}.gloss-entry.target{background:#7aa2ff14}.gloss-entry dt{font-size:15px;font-weight:650}.gloss-entry dd{margin:0}.gloss-entry p{color:var(--text-2);max-width:65ch;margin:0}.gloss-lesson{align-items:center;gap:4px;margin-top:6px;font-size:12.5px;display:inline-flex}.rail a.rail-glossary{border-top:1px solid var(--line);border-radius:0;align-items:center;gap:6px;margin-top:10px;padding-top:10px;font-size:13px;display:flex}@media (prefers-reduced-motion:reduce){.term-card,.brand:hover .logo-packet{animation:none}.btn,.card,.tline{transition:none}}@media (width<=1100px){.topbar .meta{display:none}}@media (width<=1200px){.learn{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.rail{flex-direction:row;grid-column:1/-1;position:static;overflow-x:auto}.rail-title,.rail .s{display:none}.rail a.rail-glossary{white-space:nowrap;border-top:0;border-radius:8px;margin:0;padding-top:7px}.timeline{grid-template-columns:repeat(3,minmax(0,1fr))}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=860px){.learn,.changes,.lint,.bug-layout,.hero{grid-template-columns:minmax(0,1fr)}.inspector{max-height:none;position:static}.timeline,.cards,.stats,.eco{grid-template-columns:minmax(0,1fr)}.eco li:nth-child(odd){padding-right:0}.gloss-entry{grid-template-columns:minmax(0,1fr);gap:4px}.topbar .meta,.brand-text{display:none}.topbar{gap:12px;padding:0 12px}.nav,.rail{scrollbar-width:none;min-width:0;overflow-x:auto}.nav::-webkit-scrollbar{display:none}.rail::-webkit-scrollbar{display:none}.chips{scrollbar-width:none;max-width:100%;overflow-x:auto}.page{padding:20px 14px 48px}.hero h1{font-size:34px}.nav a{padding:6px 9px}.nav{-webkit-mask-image:linear-gradient(90deg,#000 calc(100% - 20px),#0000);mask-image:linear-gradient(90deg,#000 calc(100% - 20px),#0000)}}.nav .short{display:none}@media (width<=560px){.topbar{gap:6px}.topbar .spacer{display:none}.nav{gap:0}.nav a{padding:6px 7px}.panel-head{flex-wrap:wrap}.panel-head label.row{flex-wrap:nowrap}.nav .long{display:none}.nav .short{display:inline}}@media (pointer:coarse){.btn,.btn.sm,.chip,.nav a,select,input[type=text],input[type=search]{min-height:40px}.btn.sm,.chip{align-items:center;display:inline-flex}.progress-dots{gap:2px}.progress-dots button,.progress-dots button.done,.progress-dots button.on,.progress-dots button.ex{width:24px;height:24px;box-shadow:none;background:0 0;position:relative}.progress-dots button:after{content:"";background:var(--line-2);border-radius:50%;position:absolute;inset:8px}.progress-dots button.done:after{background:var(--text-3)}.progress-dots button.on:after{background:var(--accent)}.progress-dots button.ex:after{box-shadow:0 0 0 2px #f0c35a99}.gloss-lesson,.back-link,.step-link{align-items:center;min-height:40px;display:inline-flex}}.chips.modes .chip{padding:5px 12px;font-family:inherit;font-size:13px}.editor-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:-2px;display:flex}.json-editor .tools{gap:2px;margin-right:-6px;display:inline-flex}.json-editor .tools .btn:disabled{opacity:.4;cursor:not-allowed}.json-editor .editor[aria-invalid=true]{border-color:#ff6b7a73}.json-status{font-variant-numeric:tabular-nums;flex-direction:column;gap:8px;font-size:12px;display:flex}.editor-bar .json-status{flex-direction:row;align-items:center;gap:6px}.json-status.ok{color:var(--text-3)}.json-status.ok .icon{color:var(--ok)}.json-status.bad{color:var(--err)}.json-caret{background:var(--bg-2);border:1px solid var(--line);font-family:var(--mono);color:var(--text);border-radius:8px;margin:0;padding:8px 10px;font-size:12px;line-height:1.5;overflow-x:auto}.json-caret b{color:var(--err)}.type-pick input[type=text]{font-family:var(--mono);width:220px;padding:4px 8px;font-size:12px}.type-pick select{padding:4px 8px}.across{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px;display:grid}.across-cell{border:1px solid var(--line);background:var(--bg-2);color:var(--text);text-align:left;border-radius:8px;flex-direction:column;align-items:flex-start;gap:2px;padding:8px 10px;font-size:12px;display:flex}.across-cell .s{color:var(--text-3);align-items:center;gap:4px;display:inline-flex}.across-cell.pass .s{color:var(--ok)}.across-cell.warn .s{color:var(--warn)}.across-cell.fail .s{color:var(--err)}.across-cell.none{opacity:.5;cursor:not-allowed}.across-cell.on{border-color:var(--line-2);box-shadow:inset 0 0 0 1px var(--line-2)}.across-cell:hover:not(:disabled){background:var(--panel-2)}.lint-empty{margin:4px 0}.lint-note{margin:20px 0 0}.hero-demo .seq-head{position:static}