.v4-card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:14px;margin:18px 0}.v4-card{padding:17px;border:1px solid var(--line,#304c43);border-radius:12px;background:var(--panel,#152c25)}.v4-card h3{margin:7px 0 10px}.v4-card p{font-size:13px;line-height:1.7}.v4-card small{display:block;color:var(--muted,#afc0b8);margin-bottom:10px}.v4-card button,.v4-controls button,#learning-v4-coach button,#application-v4-panel label button{border:1px solid #60816c;border-radius:7px;background:#274535;color:#e9f6de;padding:8px 11px;cursor:pointer;font:inherit;font-size:12px}.v4-controls{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0}.v4-controls button:disabled,#learning-v4-coach button:disabled{opacity:.45;cursor:not-allowed}.v4-check{font-size:12px;line-height:1.5;padding:7px 9px;border-radius:5px;background:#1d302a}.v4-check.ok{color:#bae4a9}.v4-check.fail{color:#ffd8a5;background:#443628}.v4-check button{float:right;margin-left:5px}.learning-v4-target{outline:3px solid #d8ff64!important;outline-offset:5px;box-shadow:0 0 0 8px #92ac5038!important}.learning-v4-error{outline:3px solid #ff9f53!important;outline-offset:5px;box-shadow:0 0 0 8px #ef8f4638!important}#learning-v4-coach{position:fixed;left:18px;bottom:18px;width:340px;max-height:min(68vh,650px);overflow:auto;z-index:65;padding:17px 18px;background:#10271af5;border:1px solid #b9d47c;border-radius:13px;box-shadow:0 12px 40px #0007;color:#eef4e5;font-size:13px;line-height:1.6}#learning-v4-coach h3{font-size:18px;margin:7px 0}#learning-v4-coach p{margin:9px 0}#learning-v4-coach small{font-size:11px;color:#b4c6ae}.learning-v4-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.learning-v4-hint{font:12px/1.8 ui-monospace,monospace;white-space:pre-wrap;padding:10px;background:#293727;border-radius:6px}.learning-v4-checks{max-height:170px;overflow:auto}#application-v4-live{padding:18px;border:1px solid #759465;border-radius:8px;background:#172f23;color:#d8ffad;font:600 17px/1.6 ui-monospace,monospace;margin:14px 0}#application-v4-panel label{display:block;margin:12px 0}#application-v4-panel input{background:#12291f;color:#eff9e3;border:1px solid #4e6c50;border-radius:6px;padding:8px;width:130px;margin:0 8px}#application-v4-panel li{margin:6px 0;font-size:13px}#application-v4-panel details{margin:14px 0}#application-v4-panel .scope-note{font-size:12px;line-height:1.7;color:#aabdac}@media(max-width:760px){#learning-v4-coach{left:9px;bottom:9px;width:calc(100vw - 18px);max-height:43vh;padding:12px;box-sizing:border-box}.v4-card-grid{grid-template-columns:1fr}.learning-v4-checks{max-height:100px}#application-v4-live{font-size:14px}}