:root{color:#0c1a21;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--bg:#f1f4f6;--card:#fff;--ink:#0c1a21;--muted:#5c6b73;--accent:#1f7a8c;--accent-strong:#0b4f5a;--shadow:0 22px 60px #0c1a211f;--border:#0c1a2114;--gradient:radial-gradient(circle at top left,#e6f1f6 0%,#f7efe3 45%,#f1f4f6 100%);background-color:#f1f4f6;font-family:Noto Sans SC,Source Han Sans SC,Microsoft YaHei,PingFang SC,Helvetica Neue,sans-serif}*{box-sizing:border-box}body{background:var(--gradient);min-height:100vh;margin:0}#app{min-height:100vh}.app-shell{flex-direction:column;gap:24px;min-height:100vh;padding:32px 40px 24px;display:flex}.app-header{justify-content:space-between;align-items:center;gap:24px;display:flex}.brand{align-items:center;gap:18px;display:flex}.brand-badge{color:#f1f6f8;letter-spacing:.08em;text-transform:uppercase;background:#0b4f5a;border-radius:16px;padding:12px 16px;font-weight:700}.brand h1{margin:0;font-size:26px}.brand p{color:var(--muted);margin:6px 0 0;font-size:14px}.header-actions{gap:12px;display:flex}.app-main{grid-template-columns:minmax(0,1.35fr) minmax(320px,.65fr);align-items:stretch;gap:20px;display:grid}.workspace-panel,.side-panel{background:var(--card);box-shadow:var(--shadow);border:1px solid var(--border);border-radius:24px;flex-direction:column;display:flex;overflow:hidden}.panel-head{border-bottom:1px solid var(--border);background:linear-gradient(135deg,#1f7a8c14,#fffc);justify-content:space-between;align-items:center;padding:20px 22px;display:flex}.panel-head h2{margin:0;font-size:18px}.panel-head p{color:var(--muted);margin:6px 0 0;font-size:13px}.workspace-stage{flex:1;min-height:640px}.code-preview{color:#d3f5ff;background:#0b1f24;flex:1;margin:0;padding:20px;font-family:Source Code Pro,JetBrains Mono,Menlo,monospace;font-size:13px;line-height:1.6;overflow:auto}.status-bar{color:#c7dfe5;background:#0f2a31;border-top:1px solid #ffffff1a;justify-content:space-between;align-items:center;padding:14px 18px;font-size:12px;display:flex}.status-actions{gap:8px;display:flex}.output-label{color:var(--muted);border-top:1px solid var(--border);background:#1f7a8c0f;padding:10px 18px;font-size:12px}.output-preview{color:#d7f1f6;background:#0a1519;border-top:1px solid #ffffff0f;flex:0 0 160px}.btn{cursor:pointer;border:0;border-radius:999px;padding:10px 16px;font-size:14px;font-weight:600;transition:transform .15s,box-shadow .15s}.btn.primary{background:var(--accent);color:#fefefe;box-shadow:0 12px 30px #1f7a8c40}.btn.primary:hover{transform:translateY(-1px)}.btn.ghost{color:var(--accent-strong);background:#1f7a8c1a}.btn.subtle{color:#e3f4f8;background:#ffffff2e;padding:6px 12px;font-size:12px}.app-footer{color:var(--muted);justify-content:space-between;align-items:center;padding:0 4px;font-size:13px;display:flex}.footer-pill{color:var(--accent-strong);background:#1f7a8c1f;border-radius:999px;padding:6px 12px;font-weight:600}.blocklyToolboxCategory{height:40px;line-height:30px}@media (max-width:980px){.app-shell{padding:20px}.app-header{flex-direction:column;align-items:flex-start}.header-actions{flex-wrap:wrap}.app-main{grid-template-columns:1fr}.workspace-stage{min-height:520px}.app-footer{flex-direction:column;align-items:flex-start;gap:8px}}