:root{--ink: #0d0b07;--gold: #c9a248;--goldlight: #e2bc6a;--bronze: #a07c2e;--heading: #1a1a1a;--body: #3d3a34;--muted: #8a8378;--line: #e6e2d8;--cream: #faf7ef}*{box-sizing:border-box}body{margin:0;color:var(--body);background:#fff;font-family:Questrial,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:15px;line-height:1.55}header{background:var(--ink);color:var(--goldlight);padding:14px 24px;display:flex;align-items:center;gap:14px;border-bottom:3px solid var(--gold)}header .wm{font-size:17px;font-weight:700}header .spacer{margin-left:auto}button{font:inherit;border:1px solid var(--line);background:#fff;color:var(--heading);padding:7px 14px;border-radius:6px;cursor:pointer}button.primary{background:var(--ink);color:var(--goldlight);border-color:var(--ink)}button:disabled{opacity:.5;cursor:not-allowed}header button{background:transparent;color:var(--goldlight);border-color:#4a4238}.layout{display:grid;grid-template-columns:260px 1fr;min-height:calc(100vh - 56px)}nav{border-right:1px solid var(--line);padding:16px 0}nav h2{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 16px 8px}nav a{display:block;padding:8px 16px;color:var(--body);text-decoration:none;cursor:pointer}nav a:hover{background:var(--cream)}nav a.active{background:var(--cream);border-left:3px solid var(--gold);padding-left:13px;color:var(--heading);font-weight:600}main{padding:24px 28px;max-width:1100px}h1{font-size:22px;color:var(--heading);margin:0 0 4px}.sub{color:var(--muted);font-size:13px;margin-bottom:20px}.cols{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}label{display:block;font-size:13px;color:var(--heading);font-weight:600;margin:0 0 4px}input,textarea,select{font:inherit;width:100%;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--body)}textarea{min-height:76px;resize:vertical}.field{margin-bottom:14px}.preview{border:1px solid var(--line);border-radius:8px;padding:18px 20px;background:var(--cream);white-space:pre-wrap;font-size:13px;line-height:1.5;max-height:70vh;overflow:auto}.banner{border-left:3px solid var(--gold);background:var(--cream);padding:10px 14px;margin-bottom:18px;font-size:13px}.banner.warn{border-left-color:#b4472e}.row{display:flex;gap:10px;align-items:center;margin-top:16px;flex-wrap:wrap}.muted{color:var(--muted);font-size:13px}.err{color:#b4472e;font-size:13px;margin-top:10px}.centre{max-width:620px;margin:60px auto;text-align:left}code{background:var(--cream);padding:1px 4px;border-radius:3px;font-size:12px}.preview-frame{width:100%;height:72vh;border:1px solid var(--line);border-radius:8px;background:#fff}.preview-empty{display:flex;align-items:center;justify-content:center;height:72vh;color:var(--muted)}