:root{--green:#163c2e;--green2:#286549;--lime:#c9e56c;--cream:#f5f2e9;--paper:#fffefa;--ink:#19241f;--muted:#718078;--line:#dde2dc;--shadow:0 18px 50px rgba(28,55,43,.09)}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:'DM Sans','Noto Sans KR',sans-serif}.app-shell{min-height:100vh}.topbar{height:78px;padding:0 max(5vw,30px);display:flex;align-items:center;border-bottom:1px solid rgba(22,60,46,.12);background:rgba(245,242,233,.92);position:sticky;top:0;z-index:30;backdrop-filter:blur(14px)}.brand{display:flex;gap:12px;align-items:center;color:var(--green);font-weight:700;letter-spacing:2px;text-decoration:none;font-size:15px}.brand-mark{width:34px;height:34px;border-radius:50%;background:var(--green);display:grid;place-items:center}.brand-mark span{width:14px;height:18px;border-radius:100% 0 100% 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