:root{color-scheme:light;font-family:Inter,SF Pro Display,PingFang SC,Noto Sans CJK SC,system-ui,sans-serif;--bg: #f7f6f1;--surface: #fffefa;--surface-2: #eeeee6;--ink: #151714;--muted: #656b61;--line: #deded4;--celadon: #5c7f6d;--celadon-dark: #375f50;--cinnabar: #b6422c;--paper: #fbf4dc;--shadow: 0 22px 70px rgba(42, 46, 37, .12)}*{box-sizing:border-box}body{margin:0;overflow-x:hidden;background:linear-gradient(90deg,rgba(92,127,109,.08) 1px,transparent 1px),linear-gradient(#fbfaf5,var(--bg));background-size:36px 36px,auto;color:var(--ink)}button,input,textarea{font:inherit}.app-shell{min-height:100vh}.app-header{position:sticky;top:0;z-index:10;display:grid;grid-template-columns:250px 1fr auto;gap:18px;align-items:center;min-height:72px;padding:0 28px;border-bottom:1px solid var(--line);background:#f7f6f1eb;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.brand,.top-nav a,.header-action,.btn{color:inherit;text-decoration:none}.brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;width:38px;height:38px;place-items:center;border:1px solid var(--ink);background:var(--ink);color:#fff;font-family:Songti SC,serif;font-size:22px}.brand-copy{display:grid;gap:2px}.brand-copy strong{font-size:16px}.brand-copy small,.meta-list dt,.page-row small,.form-status{color:var(--muted);font-size:12px}.top-nav{display:flex;justify-content:center;gap:6px}.top-nav a,.header-action{display:inline-flex;align-items:center;gap:7px;min-height:38px;padding:0 12px;border:1px solid transparent;font-size:14px}.top-nav a.active,.top-nav a:hover,.header-action{border-color:var(--line);background:var(--surface)}.screen{width:min(1440px,100%);margin:0 auto;padding:28px}.upload-screen,.admin-screen{display:grid;grid-template-columns:minmax(360px,.75fr) minmax(520px,1.25fr);gap:20px}.editor-screen{display:grid;grid-template-columns:230px minmax(520px,1fr) 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