:root{font-family:Inter,Microsoft YaHei,PingFang SC,system-ui,sans-serif;color-scheme:light;--bg: #f7f6f4;--panel: #ffffff;--sidebar: #ffffff;--text: #2d3b4c;--muted: #9a9995;--line: #ebe9e5;--soft: #f0efeb;--primary: #2f3e50;--primary-contrast: #ffffff;--green: #3c9448;--orange: #df5b20;--purple: #5c33a8;--shadow: 0 1px 8px rgba(41, 47, 51, .045)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit}button{cursor:pointer}.app-shell[data-theme=dark]{color-scheme:dark;--bg: #121417;--panel: #1b1f25;--sidebar: #171b20;--text: #e6edf5;--muted: #9aa4af;--line: #2a3038;--soft: #22272f;--primary: #dbe7f4;--primary-contrast: #18202a;--shadow: 0 1px 12px rgba(0, 0, 0, .22)}.app-shell{min-height:100vh;background:var(--bg)}.sidebar{position:fixed;inset:0 auto 0 0;width:340px;background:var(--sidebar);display:flex;flex-direction:column;padding:40px 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button{border:0;background:transparent;color:var(--muted);display:grid;place-items:center;align-content:center;gap:3px;font-size:16px;font-weight:800}.bottom-nav button.active{color:var(--text)}.empty-state{min-height:calc(100vh - 240px);padding:40px 24px}.empty-icon{width:168px;height:168px;margin-bottom:40px}.empty-state h2{font-size:28px}.empty-state p{line-height:1.5}.form-grid,.visibility-select{grid-template-columns:1fr}}