:root{--green-900: #143d27;--green-700: #1f5d3a;--green-500: #2e8b57;--green-50: #eef6f0;--ink: #0f1a14;--muted: #4a5a52;--line: #e3ebe5;--bg: #ffffff}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--ink);background:var(--bg)}a{color:var(--green-700)}button{font:inherit}.btn{background:var(--green-700);color:#fff;border:none;border-radius:8px;padding:8px 14px;font-weight:600;cursor:pointer}.btn:hover{background:var(--green-900)}.btn:disabled{opacity:.5;cursor:default}.card{border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 8px 24px #1f5d3a0f;padding:20px}.muted{color:var(--muted)}.error{color:#b3261e}