:root{--ink: oklch(23% .025 145);--muted: oklch(47% .025 145);--surface: oklch(99% .006 105);--surface-2: oklch(96% .01 120);--panel: oklch(98.5% .008 100);--line: oklch(88% .018 125);--accent: oklch(86% .17 125);--accent-soft: oklch(91% .08 125);--danger: oklch(48% .18 28);--success: oklch(42% .11 150);--warning: oklch(58% .12 72)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--ink);background:var(--surface-2)}button,input,textarea,select{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}aside{display:flex;flex-direction:column;gap:8px;padding:20px;background:var(--ink);color:var(--surface)}.brand{font-weight:800;font-size:20px;margin-bottom:20px}aside button,form button,header button,.tabs button,.file{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:8px;padding:10px 12px;background:var(--accent);color:var(--ink);font-weight:700}.toast-stack{position:fixed;top:18px;right:18px;z-index:20;display:grid;gap:10px;width:min(360px,calc(100vw - 36px))}.toast{justify-content:flex-start;width:100%;border:1px solid var(--line);border-radius:8px;padding:12px 14px;background:var(--panel);color:var(--ink);box-shadow:0 12px 30px #16201629;text-align:left;line-height:1.4}.toast-success{border-color:#93c69d}.toast-error{border-color:#df8074;color:var(--danger)}.toast-info{border-color:#acc188}aside button{justify-content:flex-start;background:transparent;color:var(--surface);text-align:left}aside button.active,aside button:hover{background:#2a452b;color:var(--accent)}aside .logout{margin-top:auto}main{padding:28px;overflow-x:hidden}header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:18px}h1,h2,h3,p{margin-top:0}h1{margin-bottom:0;font-size:28px;line-height:1.2}h2{margin-bottom:4px;font-size:18px}h3{margin-bottom:0;font-size:15px}.grid{display:grid;grid-template-columns:minmax(320px,460px) 1fr;gap:20px;align-items:start}.settings-grid{display:grid;grid-template-columns:minmax(300px,420px) 1fr;gap:20px;align-items:start}.tabs{display:inline-flex;gap:4px;margin-bottom:18px;padding:4px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}.tabs button{background:transparent;color:var(--muted);padding:8px 12px}.tabs button.active,.tabs button:hover{background:var(--accent-soft);color:var(--ink)}.editor,.login-panel{display:grid;gap:12px;padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:8px}.panel-title{display:flex;align-items:center;justify-content:space-between;gap:12px}.panel-title h2{margin-bottom:0}.help-tooltip{position:relative;display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border:1px solid var(--line);border-radius:999px;background:var(--surface);color:var(--muted)}.tooltip-panel{position:absolute;right:0;top:calc(100% + 8px);z-index:5;width:min(360px,calc(100vw - 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