:root{color-scheme:light dark;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:1000px;min-height:720px;overflow:hidden}button,input{font:inherit}button{border:0}.app-shell{--bg: #f5f5f7;--surface: rgba(255, 255, 255, .84);--surface-solid: #ffffff;--surface-muted: #f1f2f6;--text: #1d1d1f;--text-muted: #6e6e73;--border: rgba(60, 60, 67, .13);--border-strong: rgba(60, 60, 67, .2);--primary: #007aff;--primary-contrast: #ffffff;--shadow: 0 18px 60px rgba(0, 0, 0, .08);--shadow-soft: 0 8px 28px rgba(0, 0, 0, .06);background:var(--bg);color:var(--text);display:grid;grid-template-rows:72px 1fr;height:100vh}.app-shell.dark{--bg: #111114;--surface: rgba(30, 30, 34, .8);--surface-solid: #1c1c20;--surface-muted: #242428;--text: #f5f5f7;--text-muted: #a1a1a8;--border: rgba(235, 235, 245, .12);--border-strong: rgba(235, 235, 245, .22);--primary: #0a84ff;--primary-contrast: #ffffff;--shadow: 0 18px 60px rgba(0, 0, 0, .36);--shadow-soft: 0 8px 28px rgba(0, 0, 0, .26)}.file-input{height:1px;left:-9999px;opacity:0;position:fixed;width:1px}.topbar{align-items:center;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;padding:0 22px}.brand,.topbar-actions,.sidebar-header,.chart-toolbar,.chart-meta,.toolbar-controls,.segmented-control,.curve-item,.curve-switch,.button,.icon-button,.toast{align-items:center;display:flex}.brand{gap:12px}.brand-mark{align-items:center;background:linear-gradient(135deg,#0a84ff,#30d158);border-radius:8px;color:#fff;display:flex;height:42px;justify-content:center;box-shadow:0 10px 24px #0a84ff3d;width:42px}.brand h1,.brand p,.sidebar h2,.empty-state h2,.empty-state p,.empty-list p{margin:0}.brand h1{font-size:17px;font-weight:700;letter-spacing:0}.brand p{color:var(--text-muted);font-size:12px;margin-top:2px}.topbar-actions{gap:10px}.export-menu{position:relative}.export-popover{background:var(--surface-solid);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow);display:grid;gap:4px;min-width:168px;padding:6px;position:absolute;right:0;top:calc(100% + 8px);z-index:40}.export-popover button{align-items:center;background:transparent;border-radius:7px;color:var(--text);cursor:pointer;display:flex;gap:9px;min-height:36px;padding:0 10px;text-align:left}.export-popover button:hover:not(:disabled){background:var(--surface-muted)}.app-switcher{position:relative}.app-switcher-menu{background:var(--surface-solid);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);display:grid;gap:2px;min-width:240px;padding:6px;position:absolute;right:0;top:calc(100% + 8px);z-index:50}.app-switcher-item{align-items:center;border-radius:8px;color:var(--text);display:grid;gap:10px;grid-template-columns:8px 1fr;padding:10px 12px;text-decoration:none;transition:background .16s ease}.app-switcher-item:hover{background:#007aff14}.dark .app-switcher-item:hover{background:#0a84ff29}.app-switcher-item .dot{background:transparent;border:1px solid var(--border-strong);border-radius:999px;height:8px;width:8px}.app-switcher-item.current .dot{background:var(--primary);border-color:var(--primary)}.app-switcher-item strong{display:block;font-size:13px;font-weight:700;line-height:1.3}.app-switcher-item.current strong{color:var(--primary)}.app-switcher-item small{color:var(--text-muted);display:block;font-size:11px;margin-top:2px}.button,.icon-button{border-radius:8px;cursor:pointer;justify-content:center;transition:background .18s ease,border-color .18s ease,color .18s ease,opacity .18s ease}.button{gap:8px;min-height:42px;padding:0 15px;font-size:14px;font-weight:650}.button.primary{background:var(--primary);color:var(--primary-contrast)}.button.secondary{background:var(--surface);border:1px solid var(--border);color:var(--text)}.button.excel{background:#107c41;color:#fff}.button.database{background:#007aff;color:#fff}.button.primary:hover:not(:disabled){background:#0067d8}.dark .button.primary:hover:not(:disabled){background:#2997ff}.button.excel:hover:not(:disabled){background:#0e6b38}.dark .button.excel:hover:not(:disabled){background:#1ea35a}.button.database:hover:not(:disabled){background:#0067d8}.dark .button.database:hover:not(:disabled){background:#2997ff}.button.secondary:hover:not(:disabled){background:var(--surface-solid);border-color:var(--border-strong)}.button.ghost{background:transparent;border:1px solid transparent;color:var(--text-muted);min-height:36px;padding:0 12px;font-size:13px}.button.ghost:hover:not(:disabled){background:var(--surface-muted);color:var(--text)}.icon-button{background:var(--surface);border:1px solid var(--border);color:var(--text);height:42px;width:42px}.icon-button:hover:not(:disabled){border-color:var(--border-strong);background:var(--surface-solid)}.icon-button.subtle{height:36px;width:36px}.icon-button.tiny{flex:0 0 auto;height:30px;width:30px}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,input:focus-visible{outline:3px solid rgba(10,132,255,.34);outline-offset:2px}.workspace{display:grid;gap:16px;grid-template-columns:338px 1fr;min-height:0;padding:16px}.sidebar,.chart-section{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-soft);min-height:0}.sidebar{border-radius:8px;display:grid;grid-template-rows:auto auto auto 1fr;overflow:hidden}.sidebar-header{justify-content:space-between;padding:18px 18px 12px}.eyebrow{color:var(--primary);display:block;font-size:11px;font-weight:750;letter-spacing:0;margin-bottom:5px}.sidebar h2{font-size:21px;letter-spacing:0}.summary-grid{display:grid;gap:10px;grid-template-columns:1fr 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p{line-height:1.6;max-width:520px}.empty-state-actions{display:flex;gap:12px;margin-top:6px}.drop-overlay{align-items:center;background:#007aff29;display:flex;justify-content:center;inset:0;position:fixed;z-index:20}.drop-overlay>div{align-items:center;-webkit-backdrop-filter:blur(22px) saturate(160%);backdrop-filter:blur(22px) saturate(160%);background:var(--surface);border:1px solid var(--border-strong);border-radius:8px;box-shadow:var(--shadow);color:var(--text);display:flex;flex-direction:column;gap:12px;min-width:280px;padding:30px}.toast{background:var(--surface-solid);border:1px solid var(--border);border-radius:8px;bottom:18px;box-shadow:var(--shadow);color:var(--text);gap:12px;max-width:min(680px,calc(100vw - 36px));padding:12px 12px 12px 15px;position:fixed;right:18px;z-index:30}.toast span{font-size:13px;line-height:1.45}.toast 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12px}.picker-empty{color:var(--text-muted);font-size:13px;margin:24px 0;text-align:center}.picker-group+.picker-group{margin-top:14px}.picker-group-title{color:var(--text-muted);font-size:11px;font-weight:600;letter-spacing:.05em;margin:12px 0 6px;text-transform:uppercase}.picker-list{display:flex;flex-direction:column;gap:6px;list-style:none;margin:0;padding:0}.picker-row{align-items:center;background:var(--surface-muted);border:1px solid transparent;border-radius:8px;cursor:pointer;display:flex;gap:12px;padding:10px 12px;transition:background .12s ease,border-color .12s ease}.picker-row:hover{background:var(--surface);border-color:var(--border)}.picker-row.active{background:var(--surface);border-color:var(--primary)}.picker-row input[type=checkbox]{accent-color:var(--primary);height:16px;width:16px}.picker-row-main{display:flex;flex:1 1 auto;flex-direction:column;gap:4px;min-width:0}.picker-row-headline{align-items:center;display:flex;gap:8px;min-width:0}.picker-row-title{flex:1 1 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ease-out both}.alert-card{align-items:center;background:var(--surface-solid);border:1px solid var(--border-strong);border-radius:18px;box-shadow:0 32px 64px #0006;color:var(--text);display:flex;flex-direction:column;gap:18px;max-width:560px;padding:44px 40px 36px;text-align:center;width:100%;animation:alert-card-in .22s cubic-bezier(.18,.89,.32,1.28) both}.alert-icon{align-items:center;background:linear-gradient(135deg,#007aff,#5856d6);border-radius:50%;box-shadow:0 10px 28px #5856d666;color:#fff;display:flex;height:88px;justify-content:center;width:88px}.alert-title{font-size:26px;font-weight:700;letter-spacing:-.01em;margin:4px 0 0}.alert-body{color:var(--text);font-size:16px;line-height:1.65;margin:0}.alert-body strong{color:var(--primary);font-weight:700}.alert-action{font-size:15px;margin-top:4px;min-width:160px;padding:12px 28px}@keyframes alert-overlay-in{0%{opacity:0}to{opacity:1}}@keyframes alert-card-in{0%{opacity:0;transform:translateY(12px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.alignment-block{align-items:flex-end;display:flex;flex-direction:column;gap:6px}.alignment-warning{align-items:center;background:linear-gradient(135deg,#ff3b30,#ff2d55);border-radius:8px;box-shadow:0 6px 18px #ff2d556b;color:#fff;display:flex;font-size:12px;font-weight:600;gap:6px;line-height:1.35;padding:7px 14px;position:relative;text-align:left;white-space:nowrap;animation:alignment-warning-in .22s ease-out both,alignment-warning-pulse 1.8s ease-in-out .22s infinite}.alignment-warning strong{font-weight:800;text-decoration:underline;text-underline-offset:2px}.alignment-warning:after{background:linear-gradient(135deg,#ff3b30,#ff2d55);bottom:-4px;content:"";height:10px;position:absolute;right:32px;transform:rotate(45deg);width:10px;box-shadow:3px 3px 8px #ff2d5552}@keyframes alignment-warning-in{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes alignment-warning-pulse{0%,to{box-shadow:0 6px 18px #ff2d556b}50%{box-shadow:0 10px 26px #ff2d55c7}}