:root{--ink: #1c1c1e;--muted: #636366;--line: #d1d1d6;--bg: #f5f5f7;--surface: #ffffff;--blue: #0a84ff;--blue-dark: #0060df;--green: #34c759;--amber: #ff9f0a;--red: #ff453a;--radius: 10px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-size:15px}.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--line);flex-wrap:wrap}.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:600}.brand-dot{width:14px;height:14px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px #34c75933}.brand-sub{font-size:13px;font-weight:400;color:var(--muted)}.topbar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.visually-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.btn{font-size:15px;font-family:inherit;min-height:40px;padding:0 18px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;transition:background .12s ease,border-color .12s ease}.btn:hover:not(:disabled){background:#ececef}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}.btn-primary:hover:not(:disabled){background:var(--blue-dark)}.btn-ghost{background:transparent}.btn-tiny{min-height:28px;padding:0 12px;font-size:13px}.select{font-size:15px;font-family:inherit;min-height:40px;padding:0 12px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;max-width:260px}.toggle{display:inline-flex;align-items:center;gap:8px;font-size:15px;cursor:pointer;user-select:none;padding:6px 10px;border-radius:var(--radius);border:1px solid var(--line);background:var(--surface)}.toggle input[type=checkbox]{width:22px;height:22px;accent-color:var(--blue);cursor:pointer;margin:0}.toggle-stack{display:flex;flex-direction:column;gap:6px;align-items:stretch}.toggle-stack .toggle{font-size:14px;padding:5px 9px;white-space:nowrap}.status{font-size:13px;padding:6px 12px;border-radius:20px;font-weight:600}.status-loading{background:#fff3d6;color:#8a5a00}.status-ready{background:#e3f0ff;color:#00408a}.status-running{background:#ddf7e3;color:#146c2e}.status-stopped{background:#ececef;color:var(--muted)}.status-error{background:#ffe1de;color:#a8261c}.ctoolbar{display:flex;align-items:center;gap:18px;padding:9px 18px;border-bottom:1px solid var(--line);background:#fafafa;overflow-x:auto}.ctool-group{display:flex;align-items:center;gap:8px}.ctool-grouplabel{font-size:11.5px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;white-space:nowrap;margin-right:2px}.ctool-sep{width:1px;height:30px;background:var(--line);flex:0 0 auto}.ctool{display:inline-flex;flex-direction:column;align-items:center;gap:3px;min-width:62px;min-height:58px;padding:6px 8px;border-radius:var(--radius);border:1px solid transparent;background:transparent;cursor:pointer;font:inherit;color:var(--ink);transition:background .12s ease,border-color .12s ease}.ctool:hover{background:#eef5ff;border-color:var(--blue)}.ctool .ico{width:26px;height:26px;display:block}.ctool .ctool-label{font-size:12.5px;font-weight:600;line-height:1}.work{position:relative;display:flex;height:calc(100vh - 143px);background:#fbfbfd}.canvas-zone{flex:1;min-width:0;position:relative;overflow:hidden}.canvas-wrap{position:absolute;inset:0;overflow:auto;background:#fbfbfd}#board{display:block}.canvas-hint{position:absolute;left:16px;bottom:14px;max-width:420px;display:flex;align-items:flex-start;gap:6px;font-size:14px;line-height:1.5;color:var(--muted);background:#ffffffdb;backdrop-filter:saturate(1.1) blur(2px);border:1px solid var(--line);border-radius:var(--radius);padding:9px 13px;z-index:4}.canvas-hint[hidden]{display:none}.canvas-hint-text{flex:1 1 auto;align-self:center}.canvas-hint--warn{border-color:var(--amber);background:#fff8e8f0;color:#8a5a00}.canvas-hint-close{flex:0 0 auto;width:30px;height:30px;margin:-5px -7px -3px 2px;border:0;border-radius:8px;background:transparent;color:#8a5a00;font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .12s ease}.canvas-hint-close:hover{background:#8a5a0024}.toast{position:absolute;left:50%;bottom:18px;transform:translate(-50%);max-width:540px;display:flex;gap:10px;align-items:flex-start;background:#ffe1de;border:1px solid var(--red);color:#a8261c;border-radius:var(--radius);padding:11px 14px;font-size:14px;line-height:1.45;z-index:6;box-shadow:0 2px 8px #0000001a}.toast[hidden]{display:none}.toast-ico{flex:0 0 auto;font-size:16px;line-height:1.2}#toast-text{flex:1 1 auto;align-self:center}.side{flex:0 0 420px;display:flex;flex-direction:column;border-left:1px solid var(--line);background:var(--surface);min-width:0}.work.collapsed .side,.work.collapsed .collapse-btn{display:none}.side-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);background:#fafafa}.side-tabs{display:flex;gap:4px;margin-top:3px}.side-tab{font:inherit;font-size:14px;min-height:32px;padding:0 13px;border-radius:8px;border:1px solid transparent;background:transparent;color:var(--muted);cursor:pointer}.side-tab[aria-selected=true]{background:var(--surface);border-color:var(--line);color:var(--ink);font-weight:600}.side-panel{flex:1;min-height:0;display:flex;flex-direction:column}.side-panel[hidden]{display:none}.editor{flex:1;border:0;resize:none;padding:14px 16px;font-family:SF Mono,ui-monospace,Menlo,Consolas,monospace;font-size:14.5px;line-height:1.55;color:var(--ink);tab-size:4;outline:none}.console-head{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;font-size:14px;font-weight:600;border-bottom:1px solid var(--line);background:#fafafa}.console{flex:1;overflow-y:auto;padding:12px 16px;font-family:SF Mono,ui-monospace,Menlo,Consolas,monospace;font-size:13.5px;line-height:1.5;white-space:pre-wrap;word-break:break-word;color:#0b3d0b;background:#f7fbf7}.run-row{display:flex;align-items:center;gap:8px;padding:10px 14px;border-top:1px solid var(--line);background:#fafafa}.collapse-btn{position:absolute;top:50%;right:412px;transform:translateY(-50%);z-index:5;width:26px;height:54px;border-radius:9px;border:1px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 1px 4px #00000014;font-size:18px}.collapse-btn:hover{color:var(--ink);border-color:var(--blue)}.rail{flex:0 0 52px;display:flex;flex-direction:column;align-items:center;gap:14px;padding:16px 0;border-left:1px solid var(--line);background:#fafafa;cursor:pointer;font:inherit}.rail[hidden]{display:none}.rail:hover{background:#f0f4fb}.rail-chev{font-size:18px;color:var(--muted);font-weight:600}.rail:hover .rail-chev{color:var(--blue)}.rail-label{writing-mode:vertical-rl;transform:rotate(180deg);font-size:12.5px;font-weight:600;color:var(--muted);letter-spacing:.02em;margin-top:4px}@media (prefers-reduced-motion: no-preference){.side{transition:flex-basis .22s ease}}.hint{border-top:1px solid var(--amber);background:#fff8e8;padding:14px 16px;font-size:14px;line-height:1.5}.hint .hint-head{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;margin-bottom:4px}.hint .hint-title{font-weight:600;color:#8a5a00}.hint .hint-close{flex:0 0 auto;width:32px;height:32px;margin:-6px -6px 0 4px;border:0;border-radius:8px;background:transparent;color:#8a5a00;font-size:23px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .12s ease}.hint .hint-close:hover{background:#8a5a0024}.hint .hint-suggestion{margin-top:6px;color:var(--muted)}