:root{--tg-bg: var(--tg-theme-bg-color, #ffffff);--tg-text: var(--tg-theme-text-color, #000000);--tg-hint: var(--tg-theme-hint-color, #999999);--tg-link: var(--tg-theme-link-color, #2481cc);--tg-button: var(--tg-theme-button-color, #2481cc);--tg-button-text: var(--tg-theme-button-text-color, #ffffff);--tg-secondary-bg: var(--tg-theme-secondary-bg-color, #f1f1f1);--tg-section-bg: var(--tg-theme-section-bg-color, #ffffff);--tg-header-bg: var(--tg-theme-header-bg-color, #f5f5f5);--tg-accent: var(--tg-theme-accent-text-color, #2481cc);--tg-destructive: var(--tg-theme-destructive-text-color, #cc2929)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#app{height:100%;margin:0;padding:0;background:var(--tg-bg);color:var(--tg-text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Helvetica Neue,Microsoft JhengHei,sans-serif;font-size:15px;line-height:1.5;overflow:hidden;overflow-x:hidden;overscroll-behavior:contain}#app{display:flex;flex-direction:column}.app{display:flex;flex-direction:column;height:100%}.header{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--tg-header-bg);border-bottom:1px solid color-mix(in srgb,var(--tg-hint) 25%,transparent)}.header .title{font-weight:600;font-size:16px}.header .user{margin-left:auto;font-size:12px;color:var(--tg-hint)}.header .fs-btn{border:1px solid color-mix(in srgb,var(--tg-hint) 35%,transparent);background:var(--tg-bg);color:var(--tg-text);padding:4px 9px;border-radius:6px;font-size:14px;cursor:pointer;line-height:1}.header .fs-btn:active{background:var(--tg-secondary-bg)}.header .fs-btn:not(.user+.fs-btn){margin-left:auto}.body{flex:1;display:flex;min-height:0}.sidebar{width:40%;max-width:320px;min-width:220px;display:flex;flex-direction:column;border-right:1px solid color-mix(in srgb,var(--tg-hint) 25%,transparent);background:var(--tg-secondary-bg)}.search-row{padding:10px;border-bottom:1px solid color-mix(in srgb,var(--tg-hint) 25%,transparent)}.search-row input{width:100%;padding:8px 10px;border:1px solid color-mix(in srgb,var(--tg-hint) 35%,transparent);border-radius:8px;background:var(--tg-bg);color:var(--tg-text);font-size:14px;outline:none}.file-list{flex:1;overflow-y:auto;padding:6px 0}.file-item{padding:8px 12px;cursor:pointer;border-left:3px solid transparent;user-select:none}.file-item:hover{background:color-mix(in srgb,var(--tg-button) 8%,transparent)}.file-item.active{background:color-mix(in srgb,var(--tg-button) 15%,transparent);border-left-color:var(--tg-button)}.file-item .fname{font-size:13px;font-weight:500;word-break:break-all}.file-item .fmeta{font-size:11px;color:var(--tg-hint);margin-top:2px}.viewer{flex:1;display:flex;flex-direction:column;min-width:0}.viewer-toolbar{display:flex;align-items:center;gap:8px;padding:8px 14px;border-bottom:1px solid color-mix(in srgb,var(--tg-hint) 25%,transparent);background:var(--tg-section-bg);min-height:42px}.viewer-toolbar .vname{font-size:13px;font-weight:600;word-break:break-all;flex:1;min-width:0}.viewer-toolbar button{border:1px solid color-mix(in srgb,var(--tg-hint) 35%,transparent);background:var(--tg-bg);color:var(--tg-text);padding:4px 10px;border-radius:6px;font-size:12px;cursor:pointer}.viewer-toolbar button:active{background:var(--tg-secondary-bg)}.viewer-body{flex:1;overflow-y:auto;overflow-x:hidden;padding:14px 18px 60px;touch-action:pan-y;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.viewer-body--media{padding:0;overflow:hidden;display:flex;background:var(--tg-secondary-bg)}.media-frame{flex:1;width:100%;height:100%;border:0;background:#fff}.media-img{margin:auto;max-width:100%;max-height:100%;object-fit:contain}.plaintext{margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;line-height:1.5;white-space:pre-wrap;word-break:break-all}.empty{display:flex;align-items:center;justify-content:center;height:100%;color:var(--tg-hint);font-size:13px;padding:20px;text-align:center}.error{color:var(--tg-destructive);padding:20px;font-size:13px;word-break:break-word}@media(max-width:640px){.body.mobile-viewer .sidebar{display:none}.body:not(.mobile-viewer) .viewer{display:none}.sidebar{width:100%;max-width:none}}.markdown{font-size:14px;line-height:1.6;word-wrap:break-word;overflow-wrap:anywhere;word-break:break-word;max-width:100%}.markdown *{max-width:100%}.markdown h1{font-size:22px;margin:16px 0 10px;border-bottom:1px solid color-mix(in srgb,var(--tg-hint) 30%,transparent);padding-bottom:6px}.markdown h2{font-size:18px;margin:16px 0 8px}.markdown h3{font-size:16px;margin:14px 0 6px}.markdown h4{font-size:14px;margin:12px 0 4px}.markdown p{margin:8px 0}.markdown ul,.markdown ol{margin:8px 0;padding-left:22px}.markdown li{margin:3px 0}.markdown code{background:var(--tg-secondary-bg);padding:1px 5px;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}.markdown pre{background:var(--tg-secondary-bg);padding:10px 12px;border-radius:8px;overflow-x:auto;max-width:100%;font-size:12.5px;line-height:1.45;touch-action:pan-x pan-y;-webkit-overflow-scrolling:touch}.markdown pre code{background:transparent;padding:0;font-size:inherit}.markdown .table-wrap{overflow-x:auto;max-width:100%;touch-action:pan-x pan-y}.markdown table{border-collapse:collapse;margin:10px 0;font-size:13px;width:100%;display:block;overflow-x:auto;max-width:100%}.markdown th,.markdown td{border:1px solid color-mix(in srgb,var(--tg-hint) 30%,transparent);padding:6px 9px;text-align:left}.markdown th{background:var(--tg-secondary-bg);font-weight:600}.markdown blockquote{border-left:3px solid color-mix(in srgb,var(--tg-button) 60%,transparent);margin:10px 0;padding:4px 12px;color:var(--tg-hint)}.markdown a{color:var(--tg-link)}.markdown hr{border:none;border-top:1px solid color-mix(in srgb,var(--tg-hint) 30%,transparent);margin:16px 0}.hljs-keyword,.hljs-built_in{color:#c678dd}.hljs-string{color:#98c379}.hljs-number{color:#d19a66}.hljs-comment{color:var(--tg-hint);font-style:italic}.hljs-title,.hljs-function{color:#61afef}.hljs-attr,.hljs-attribute{color:#e5c07b}