.app{display:flex;height:100vh;background:var(--bg);position:relative;transition:background .3s}.app[data-theme=dark]{--bg: #12141c;--card: #1c2030;--ink: #f2f4fb;--ink-soft: #aab3cf;--line: #2b3148;--shadow: 0 10px 30px rgba(0,0,0,.4)}.topbar{position:absolute;top:0;left:0;right:0;height:56px;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:0 20px;background:var(--card);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.brand{display:flex;align-items:center;gap:10px}.brand-icon{width:34px;height:34px;border-radius:9px;color:#fff;font-weight:700;display:grid;place-items:center;font-size:18px}.brand-name{font-weight:700;font-size:18px;color:var(--ink)}.topbar-actions{display:flex;gap:8px}.pill{padding:7px 14px;border-radius:20px;font-size:13px;font-weight:600;color:var(--ink);background:var(--bg);border:1px solid var(--line);transition:all .2s}.pill:hover{border-color:var(--brand);color:var(--brand)}.side{position:absolute;top:56px;bottom:0;width:300px;z-index:15;background:var(--card);padding:18px 16px;overflow-y:auto}.side.left{left:0;border-right:1px solid var(--line)}.panel-title{font-weight:700;font-size:14px;margin-bottom:8px;color:var(--ink)}.prompt-box{width:100%;min-height:76px;resize:vertical;padding:10px 12px;border-radius:10px;border:1px solid var(--line);font-size:13px;line-height:1.5;color:var(--ink);background:var(--bg);margin-bottom:10px}.prompt-box:focus{border-color:var(--brand)}.btn{width:100%;padding:11px;border-radius:10px;font-weight:700;font-size:14px;margin-bottom:8px;transition:transform .1s,opacity .2s}.btn:active{transform:translateY(1px)}.btn.primary{background:linear-gradient(135deg,#7048e8,#5b8def);color:#fff}.btn.primary:disabled{opacity:.5;cursor:not-allowed}.btn.primary.accent2{background:linear-gradient(135deg,#ff6b6b,#f7c948)}.btn.ghost{background:var(--bg);color:var(--ink);border:1px solid var(--line)}.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}.btn.danger:hover{border-color:#ff6b6b;color:#ff6b6b}.divider{height:1px;background:var(--line);margin:12px 0}.err{color:#ff6b6b;font-size:12px;margin-top:8px;line-height:1.4}.canvas-wrap{flex:1;height:100vh;position:relative;overflow:hidden;margin-left:300px}.empty-hint{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;pointer-events:none;z-index:5;gap:14px}.hint-chip{display:inline-block;padding:7px 16px;border-radius:30px;font-size:13px;font-weight:600;color:var(--brand);background:#7048e814;border:1px solid rgba(112,72,232,.25)}.empty-hint h1{font-size:40px;line-height:1.25;color:var(--ink);font-weight:800;letter-spacing:-.5px}.empty-hint .grad{background:linear-gradient(90deg,#f7c948,#ff6b6b,#0ca678,#5b8def);-webkit-background-clip:text;background-clip:text;color:transparent}.hint-sub{color:var(--ink-soft);font-size:15px;max-width:460px;line-height:1.6}.hint-legend{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-top:6px}.hint-legend span{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--ink-soft)}.hint-legend i{width:10px;height:10px;border-radius:3px;display:inline-block}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#12141c73;z-index:40;display:grid;place-items:center}.modal{width:420px;max-width:92vw;background:var(--card);border-radius:16px;padding:24px;box-shadow:var(--shadow)}.modal-title{font-weight:800;font-size:18px;color:var(--ink);margin-bottom:16px}.field{display:block;font-size:13px;font-weight:600;color:var(--ink-soft);margin:12px 0 6px}.input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);font-size:13px;color:var(--ink);background:var(--bg)}.input:focus{border-color:var(--brand)}.hint{font-size:12px;color:var(--ink-soft);margin-top:12px;line-height:1.5}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}.modal-actions .btn{width:auto;padding:9px 20px;margin-bottom:0}:root{--bg: #f5f7fb;--card: #ffffff;--ink: #16213e;--ink-soft: #4a5578;--brand: #7048e8;--brand-2: #5b8def;--accent-1: #f7c948;--accent-2: #ff6b6b;--accent-3: #0ca678;--accent-4: #5b8def;--line: #e3e8f2;--shadow: 0 10px 30px rgba(22, 33, 62, .08);--radius: 14px}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--ink);overflow:hidden}button{font-family:inherit;cursor:pointer;border:none;background:none}input,textarea{font-family:inherit;outline:none}