:root{--bg-top:#fcf6ef;--bg-bottom:#f3e8da;--surface:rgba(255,253,249,0.8);--surface-strong:rgba(255,255,255,0.92);--surface-soft:rgba(255,248,240,0.82);--line:rgba(28,21,15,0.08);--line-strong:rgba(28,21,15,0.14);--text:#171311;--muted:#786c61;--accent:#181512;--accent-strong:#f26b3a;--danger:#c93b1d;--shadow:0 20px 50px rgba(41,29,20,0.12)}*{box-sizing:border-box}body,html{margin:0;width:100%;height:100%;overflow:hidden}body{color:var(--text);font-family:var(--font-body),"PingFang SC","Hiragino Sans GB",sans-serif;background:radial-gradient(circle at top left,rgba(242,107,58,.14),transparent 24%),radial-gradient(circle at 82% 14%,rgba(255,205,149,.24),transparent 18%),linear-gradient(180deg,var(--bg-top) 0,var(--bg-bottom) 100%)}button,input,textarea{font:inherit}.page-shell{width:100%}.app-shell,.page-shell{height:100vh;overflow:hidden}.app-shell{display:grid;grid-template-columns:248px 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