:root{--bg-deep: #1c2a1f;--bg-mid: #2f4534;--sand: #f3e6c8;--sand-soft: #efe2c0;--ink: #1f241c;--muted: #5d6758;--accent: #8b5a2b;--accent-soft: #d8b58a;--line: rgba(47, 69, 52, .16);--panel: rgba(255, 250, 240, .9);--shadow: 0 24px 60px rgba(16, 28, 18, .28);font-family:"Noto Serif SC","Source Han Serif SC",Songti SC,serif;color:var(--ink);background:var(--bg-deep)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{min-height:100vh;background:radial-gradient(circle at 20% 15%,rgba(243,230,200,.18),transparent 32%),radial-gradient(circle at 80% 0%,rgba(143,170,120,.2),transparent 28%),linear-gradient(160deg,#152018,#243528 45%,#1a261d)}button,input{font:inherit}.app-shell{width:100%;margin:0;padding:12px 16px 20px;box-sizing:border-box}.app-shell-side{width:100%;max-width:none;display:grid;grid-template-columns:200px minmax(0,1fr);gap:14px;align-items:stretch;padding:12px 16px 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