:root{--bg:#f7f7f8;--bg-dark:#121216;--text:#111;--text-dark:#eaeaea;--accent:#2b8aef;--reader-font-size:16px}*{box-sizing:border-box}body,html,#root{height:100%;margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica Neue,Arial;color:var(--text);background:var(--bg)}.app{display:flex;height:100vh}.hamburger{display:none;position:fixed;left:12px;top:12px;z-index:60;background:var(--accent);color:#fff;border:none;padding:8px 10px;border-radius:6px}.sidebar{width:300px;background:#fff;border-right:1px solid #e6e6e6;padding:20px;overflow:auto;z-index:50}.sidebar h1{margin:0 0 12px;font-size:18px}.sidebar .build-meta{margin:0 0 16px;font-size:12px;color:#666;clear:both}.sidebar .settings-btn{float:right;margin-left:8px;border:0;background:transparent;cursor:pointer;font-size:18px}.settings-panel{margin:10px 0;padding:8px;border:1px solid #eee;border-radius:8px;background:#fafafa}.settings-panel label{display:block;font-size:13px;margin-bottom:8px}.sidebar input{width:100%;padding:8px 10px;margin-bottom:12px;border:1px solid #ddd;border-radius:6px}.sidebar .story-list{display:flex;flex-direction:column;gap:10px}.sidebar .story-group{border:1px solid #e6e6e6;border-radius:10px;background:#fafafa;overflow:hidden}.sidebar .story-group.expanded{background:#fff}.sidebar .story-toggle{width:100%;text-align:left;padding:10px 12px;border:0;background:transparent;font-size:14px;font-weight:600;cursor:pointer;color:inherit}.sidebar .story-toggle.active{color:var(--accent)}.chapter-list{list-style:none;margin:0;padding:0 0 8px}.chapter-list li{margin:0}.chapter-button{width:100%;padding:6px 12px;border:0;background:transparent;text-align:left;cursor:pointer;border-radius:6px;color:inherit;font-size:13px}.chapter-button:hover{background:#f0f8ff}.chapter-button.active{background:var(--accent);color:#fff}.chapter-list .empty{padding:6px 12px;color:#777;font-size:12px}.sidebar 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6px;color:#666;font-size:14px}.reader article .chapter-volume{margin:0 0 16px;color:#888;font-size:13px}.reader pre{white-space:pre-wrap;word-wrap:break-word;font-family:inherit;font-size:var(--reader-font-size);line-height:var(--reader-line-height,1.6)}.placeholder{color:#666}html[data-theme=dark]{background:var(--bg-dark);color:var(--text-dark)}html[data-theme=dark] .reader{background:#0f1112}html[data-theme=dark] .sidebar{background:#0b0b0c;color:var(--text-dark);border-right-color:#222}html[data-theme=dark] .reader article{background:#121216;color:var(--text-dark);box-shadow:none}html[data-theme=dark] .sidebar .build-meta{color:#8d8d8d}html[data-theme=dark] .sidebar .story-group{border-color:#1f1f1f;background:#141417}html[data-theme=dark] .sidebar .story-group.expanded{background:#0e0e10}html[data-theme=dark] .chapter-button:hover{background:#1e2a44}html[data-theme=dark] .chapter-button.active{background:var(--accent);color:#fff}html[data-theme=dark] .chapter-list .empty{color:#9a9a9a}html[data-theme=dark] .sidebar .empty-state{color:#a2a2a2;border-color:#2a2a2a}html[data-theme=dark] .story-content.with-volumes .volume-group{border-color:#1f1f1f;background:#141417}html[data-theme=dark] .story-content.with-volumes .volume-group.expanded{background:#0e0e10;box-shadow:none}html[data-theme=dark] .volume-toggle.active{color:var(--accent)}html[data-theme=dark] .empty-state.subtle{color:#9c9c9c}html[data-theme=dark] .reader article .chapter-story{color:#a0a0a0}html[data-theme=dark] .reader article .chapter-volume{color:#8d8d8d}@media (max-width: 800px){.app{height:100vh}.hamburger{display:block}.sidebar{position:fixed;left:0;top:0;height:100vh;transform:translate(-110%);transition:transform .22s ease;background:var(--bg);box-shadow:2px 0 12px #0000001f}.sidebar.open{transform:translate(0)}.sidebar .close-sidebar{display:block;margin-left:auto;border:0;background:transparent;color:var(--text);font-size:18px;cursor:pointer}.reader{padding:16px}.sidebar{width:78%;max-width:360px}}.scroll-to-top{position:fixed;bottom:20px;right:20px;background-color:var(--accent);color:#fff;border:none;border-radius:50%;width:40px;height:40px;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:100}.scroll-to-top.visible{opacity:1;visibility:visible}.chapter-navigation{display:flex;justify-content:space-between;margin:16px 0}.chapter-navigation button{background-color:var(--accent);color:#fff;border:none;padding:8px 16px;border-radius:6px;cursor:pointer;font-size:14px}.chapter-navigation button:disabled{background-color:#ccc;cursor:not-allowed}html[data-theme=dark] .chapter-navigation button:disabled{background-color:#555;color:#aaa}