:root{--bg: #ffffff;--fg: #1a1a1a;--muted: #8a8f98;--border: #e4e6eb;--accent: #3b6ef5;--panel: #f7f8fa}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#app{height:100%;margin:0}body{font-family:-apple-system,PingFang SC,Microsoft YaHei,system-ui,sans-serif;background:var(--bg);color:var(--fg);overscroll-behavior:none}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--panel);color:var(--fg);border-radius:8px;padding:8px 12px}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.ghost{background:transparent;border-color:transparent}input,textarea,select{font:inherit;padding:8px 10px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--fg);width:100%}.library{padding:16px max(16px,env(safe-area-inset-left))}.lib-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}.lib-head h1{font-size:20px;margin:0;flex:1}.sync-badge{font-size:12px;padding:4px 10px;border-radius:999px;border:1px solid var(--border);cursor:pointer;white-space:nowrap}.sync-badge:before{content:"● "}.sync-badge.local{color:var(--muted)}.sync-badge.synced{color:#2e7d32;border-color:#a5d6a7}.sync-badge.checking{color:var(--muted)}.sync-badge.error{color:#c0392b;border-color:#e7a9a1}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}.card{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--panel);display:flex;flex-direction:column}.card .cover{aspect-ratio:3/4;background:#d9dde3 center/cover no-repeat;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;text-align:center;padding:8px}.card .info{padding:8px 10px}.card .title{font-size:13px;font-weight:600;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card .sub{font-size:11px;color:var(--muted);margin-top:4px}.card .bar{height:3px;background:var(--accent)}.reader{position:fixed;inset:0;display:flex;flex-direction:column}.reader .reader-body{flex:1;display:flex;min-height:0}.reader .viewport{flex:1;position:relative;min-width:0}.reader .tapzone{position:absolute;top:0;bottom:0;width:30%;z-index:5}.reader .tapzone.left{left:0}.reader .tapzone.right{right:0}.topbar,.bottombar{display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--bg);border-color:var(--border);z-index:10}.topbar{border-bottom:1px solid var(--border);padding-top:max(10px,env(safe-area-inset-top))}.bottombar{border-top:1px solid var(--border);padding-bottom:max(10px,env(safe-area-inset-bottom));font-size:12px;color:var(--muted)}.topbar .spacer,.bottombar .spacer{flex:1}.reader .sidebar{width:260px;flex:0 0 260px;overflow-y:auto;background:var(--panel);padding:12px}.reader .sidebar.left{border-right:1px solid var(--border)}.reader .sidebar.right{border-left:1px solid var(--border)}.reader .sidebar .side-head{font-size:15px;font-weight:600;margin-bottom:10px}@media(max-width:640px){.reader .sidebar{width:42vw;flex-basis:42vw}}.topbar .ttl{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:50vw}.overlay{position:fixed;inset:0;background:#0006;z-index:50;display:flex}.panel{background:var(--bg);width:min(420px,86vw);height:100%;overflow-y:auto;padding:16px}.panel.right{margin-left:auto}.sheet{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--bg);border-top-left-radius:16px;border-top-right-radius:16px;padding:16px;padding-bottom:max(16px,env(safe-area-inset-bottom));box-shadow:0 -4px 24px #00000026}.row{display:flex;align-items:center;gap:10px;margin:10px 0}.row label{width:64px;color:var(--muted);font-size:13px}.sheet .sub{font-size:12px;color:var(--muted);margin:4px 0 8px}.sheet .sub.err{color:#c0392b}.toc-item,.anno-item{padding:12px 8px;border-bottom:1px solid var(--border);cursor:pointer}.toc-item:hover,.anno-item:hover{background:var(--panel)}.anno-item.active{background:color-mix(in srgb,var(--accent) 14%,transparent);border-left:3px solid var(--accent);padding-left:5px}.anno-item .meta{font-size:11px;color:var(--muted);margin-top:4px;display:flex;gap:8px;align-items:center}.anno-item .note{font-size:13px;margin-top:6px}.anno-item .quote{font-size:13px;color:var(--fg);opacity:.8;border-left:3px solid var(--accent);padding-left:8px}.swatch{width:18px;height:18px;border-radius:50%;border:1px solid rgba(0,0,0,.15)}.colors{display:flex;gap:10px}.colors .swatch{cursor:pointer;width:26px;height:26px}.colors .swatch.sel{outline:2px solid var(--accent);outline-offset:2px}.selbar{position:fixed;z-index:70;display:flex;align-items:center;gap:12px;background:#2b2f36;color:#fff;padding:8px 12px;border-radius:10px;box-shadow:0 4px 16px #00000047;animation:selbar-in .12s ease-out}.selbar .colors{gap:8px}.selbar .colors .swatch{width:22px;height:22px;border-color:#ffffff4d}.selbar .selbar-btn{background:transparent;border:none;color:#fff;padding:4px 6px;border-left:1px solid rgba(255,255,255,.18);border-radius:0;font-size:14px}@keyframes selbar-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.stale{color:#c0392b;font-size:11px}.center{display:flex;align-items:center;justify-content:center;height:100%;flex-direction:column;gap:12px;color:var(--muted);padding:24px;text-align:center}.hidden{display:none!important}.tabs{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}.tabs button.sel{background:var(--accent);color:#fff;border-color:var(--accent)}.tabs button{padding:6px 10px}.search-head{position:sticky;top:0;background:var(--bg);padding-bottom:8px;z-index:1}.search-count{font-size:12px;color:var(--muted);margin:4px 0 8px}.quote mark{background:#ffe082;color:inherit;border-radius:2px;padding:0 1px}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%);background:#222;color:#fff;padding:10px 16px;border-radius:8px;z-index:100;font-size:13px}