:root{--ink:#1b2a36;--muted:#6f7c89;--accent:#9baa2b;--accent-dark:#819019;--line:#e3e8ed;--soft:#f5f7f9;--white:#fff;--shadow:0 15px 50px rgba(16,32,44,.09)}*{box-sizing:border-box}html{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);scroll-behavior:smooth}body{margin:0;background:#e9edf1}.app-shell{display:grid;grid-template-columns:minmax(365px,490px) minmax(540px,1fr);min-height:100vh}.editor-side{background:var(--white);height:100vh;overflow-y:auto;border-right:1px solid #dce1e7;padding:24px 25px 36px;scrollbar-color:#d7dee5 transparent}.brand-head{display:flex;gap:11px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}.brand-icon{width:40px;height:40px;display:grid;place-items:center;border-radius:11px;background:var(--ink);color:#b6c449;font-weight:900;font-size:25px}.brand-head strong{font-size:14px;display:block}.brand-head 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