:root{--reader-h: 92vh;--bg: #e6e4e0;--paper: #fdfbf7;--text: #2c2b29;--dim: #666;--meta: #aaa;--accent: #a88b43;--border: #e0e0e0;--code: #f4f2ed;--hover-bg: rgba(0, 0, 0, .04);--font-display: "Cormorant Garamond", "Noto Serif SC", "Songti SC", "SimSun", serif;--font-body: "Crimson Pro", "Noto Serif SC", "Songti SC", "SimSun", serif;--font-ui: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--hl-keyword: #000;--hl-string: #a88b43;--hl-comment: #999;--hl-number: #8a6d3b;--hl-func: #555;--popover-bg: #2c2b29;--popover-text: #fdfbf7;--danger: #e57373}[data-theme=dark]{--bg: #0a0a0a;--paper: #141414;--text: #c0c0c0;--dim: #777;--meta: #555;--accent: #bfa15f;--border: #2a2a2a;--code: #1c1c1c;--hover-bg: rgba(255, 255, 255, .05);--hl-keyword: #d4d4d4;--hl-string: #bfa15f;--hl-comment: #505050;--hl-number: #d7ba7d;--hl-func: #dedede;--popover-bg: #1f1f1f;--popover-text: #e0e0e0;--danger: #cf6679}.hidden{display:none!important}*{box-sizing:border-box;margin:0;padding:0;outline:none}::selection{background:#a88b434d;color:inherit}::-webkit-scrollbar{height:4px;width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--accent);border-radius:2px}::-webkit-scrollbar-thumb:hover{background:var(--text)}body{background:var(--bg);color:var(--text);font-family:var(--font-body);height:100vh;display:flex;flex-direction:column;overflow:hidden;transition:background .4s ease}#background-canvas{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;opacity:.6}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");pointer-events:none;z-index:9999;opacity:.6;mix-blend-mode:multiply}body:after{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0;background:radial-gradient(circle at center,transparent 0%,rgba(0,0,0,.08) 100%)}[data-theme=dark] body:before{opacity:.08;mix-blend-mode:overlay}[data-theme=dark] body:after{background:radial-gradient(circle at center,transparent 0%,rgba(0,0,0,.4) 100%)}#staging{position:fixed;top:-20000px;left:-20000px;visibility:hidden;pointer-events:none;z-index:-999}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulseRed{0%{box-shadow:0 0 #e5737366}70%{box-shadow:0 0 0 6px #e5737300}to{box-shadow:0 0 #e5737300}}.ui-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:4px;color:var(--dim);cursor:pointer;transition:all .2s ease}.ui-btn:hover,.ui-btn.active{color:var(--text);background:var(--hover-bg)}.ui-btn.active{color:var(--accent)}.ui-btn svg{stroke-width:1.5}.auth-btn{padding:6px 16px;font-family:var(--font-ui);font-size:.85rem;font-weight:600;border:1px solid var(--border);border-radius:20px;margin-left:12px;cursor:pointer;transition:all .2s ease;color:var(--dim);background:transparent}.auth-btn:hover{border-color:var(--accent);color:var(--accent);background:#a88b430d}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);color:var(--paper);font-family:var(--font-ui);font-weight:600;font-size:.8rem;display:flex;align-items:center;justify-content:center;cursor:pointer;margin-left:12px;transition:transform .2s}.user-avatar:hover{transform:scale(1.1)}.nav-btn{display:flex;align-items:center;gap:6px;font-family:var(--font-ui);font-size:.7rem;font-weight:700;color:var(--dim);cursor:pointer;padding:6px 14px;border-radius:4px;text-transform:uppercase;letter-spacing:.08em;transition:all .2s ease}.nav-btn:hover{color:var(--accent);background:var(--hover-bg)}.nav-btn svg{width:16px;height:16px;stroke-width:2}.action-btn{background:transparent;border:none;color:var(--meta);cursor:pointer;display:flex;align-items:center;gap:6px;font-family:var(--font-ui);font-size:.8rem;transition:color .2s ease}.action-btn:hover{color:var(--dim)}.action-btn svg{width:16px;height:16px;stroke-width:1.5}.action-btn-primary{background:var(--accent);color:var(--paper);border:none;padding:8px 20px;border-radius:4px;font-family:var(--font-ui);font-size:.85rem;font-weight:600;cursor:pointer;transition:all .2s;box-shadow:0 4px 12px #a88b4333}.action-btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 16px #a88b434d}.sidebar-input-submit.stop-mode,.send-btn.stop-mode,.home-icon-btn.stop-mode{color:var(--danger)!important;border-color:var(--danger)!important;animation:pulseRed 2s infinite}.pop-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:2px;color:var(--popover-text);transition:background .2s}.pop-btn:hover{background:#ffffff26}.pop-btn svg{width:16px;height:16px;stroke-width:2}.prompt-btn{padding:.6rem 1.2rem;border-radius:2px;font-family:var(--font-ui);font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease;border:1px solid transparent}.btn-cancel{color:var(--dim);background:transparent}.btn-cancel:hover{color:var(--text);background:var(--hover-bg)}.btn-save{background:var(--accent);color:var(--paper)}.btn-save:hover{opacity:.9;transform:translateY(-1px)}.dropdown-wrapper{position:relative}.ui-dropdown{position:absolute;top:120%;right:0;max-width:200px;background:var(--paper);border:1px solid var(--border);border-radius:4px;box-shadow:0 4px 12px #0000001a;opacity:0;visibility:hidden;transform:translateY(-5px);transition:all .2s ease;z-index:1000;padding:4px}.ui-dropdown.show{opacity:1;visibility:visible;transform:translateY(0)}.menu-item{width:100%;padding:8px 12px;font-size:.8rem;color:var(--dim);cursor:pointer;border-radius:2px;display:-webkit-box;align-items:center;justify-content:space-between;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;-webkit-line-clamp:1;-webkit-box-orient:vertical}.menu-item:hover{background:var(--hover-bg);color:var(--text)}.menu-item.selected{color:var(--accent);background:#a88b4314}.menu-item svg{width:14px;height:14px;stroke-width:2;opacity:.8}.menu-item.selected svg{opacity:1}.menu-divider{height:1px;background:var(--border);margin:4px 0;opacity:.5}.toc-dropdown{width:280px;max-height:60vh;overflow-y:auto;padding:8px 0}#toc-menu{right:auto;left:0}.toc-dropdown::-webkit-scrollbar{width:4px}.toc-dropdown::-webkit-scrollbar-thumb{background:#0003;border-radius:2px}.toc-item{padding:8px 16px;cursor:pointer;color:var(--dim);line-height:1.3;border-left:2px solid transparent;transition:all .2s ease}.toc-item:hover{background:var(--hover-bg);color:var(--text);border-left-color:var(--accent)}.toc-h1{font-family:var(--font-display);font-weight:700;font-size:.95rem;color:var(--text);padding-top:12px;padding-bottom:4px;border-bottom:1px solid rgba(0,0,0,.05);margin-bottom:4px}.toc-h2{font-family:var(--font-display);font-weight:600;font-size:.9rem;padding-left:20px}.toc-h3{font-family:var(--font-ui);font-weight:400;font-size:.8rem;padding-left:32px;opacity:.9}.toc-empty{padding:1rem;text-align:center;font-style:italic;color:var(--meta);font-family:var(--font-ui);font-size:.8rem}.chip{padding:8px 18px;border:1px solid var(--border);border-radius:24px;font-family:var(--font-ui);font-size:.8rem;color:var(--dim);cursor:pointer;transition:all .2s;background:var(--paper);font-weight:500}.chip:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 10px #00000008}.filter-options .chip{font-size:.75rem;padding:4px 10px;border-radius:16px;background:var(--bg);color:var(--dim);border:1px solid var(--border);cursor:pointer;transition:all .2s}.filter-options .chip:hover{border-color:var(--accent);color:var(--accent);background:var(--hover-bg)}.filter-options .chip.selected{background:var(--accent);color:var(--paper);border-color:var(--accent);font-weight:600}.filter-options.toggle-group{background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:3px;gap:0}.toggle-option{padding:6px 14px;font-family:var(--font-ui);font-size:.75rem;font-weight:500;color:var(--dim);cursor:pointer;border-radius:16px;transition:all .2s ease;flex-grow:1;text-align:center}.toggle-option.selected{background:var(--accent);color:var(--paper);font-weight:600}.panel-section{margin-bottom:0;display:flex;flex-direction:column;height:100%;min-height:0}.panel-header{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-ui);font-size:.7rem;font-weight:700;color:var(--dim);margin-bottom:.8rem;text-transform:uppercase;letter-spacing:.15em;border-bottom:1px solid var(--border);padding-bottom:.6rem;opacity:.8;flex-shrink:0}.panel-header svg{width:14px!important;height:14px!important;min-width:14px;min-height:14px;cursor:pointer;opacity:.4;transition:all .2s}.panel-header svg:hover{opacity:1;color:var(--accent)}.file-grid{display:flex;flex-direction:column;gap:.6rem;flex:1;overflow-y:auto;min-height:0;padding:2px 6px 2px 2px;margin-bottom:1rem}.file-grid::-webkit-scrollbar{width:4px}.file-grid::-webkit-scrollbar-thumb{background:#0003;border-radius:2px}.file-grid::-webkit-scrollbar-track{background:transparent}.file-card{border:1px solid var(--border);border-radius:6px;padding:.8rem;background:#ffffff80;cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;gap:.3rem;position:relative;padding-right:24px;flex-shrink:0}[data-theme=dark] .file-card{background:#0003}.file-card:hover{border-color:var(--accent);transform:translateY(-1px);box-shadow:0 4px 12px #0000000d;background:var(--paper)}.file-card-title{font-family:var(--font-ui);font-weight:600;font-size:.85rem;color:var(--text);word-break:break-all}.file-card-meta{font-family:var(--font-ui);font-size:.65rem;color:var(--meta);display:flex;justify-content:space-between}.file-type-badge{font-size:.6rem;padding:1px 5px;border-radius:4px;background:var(--bg);border:1px solid var(--border);text-transform:uppercase;letter-spacing:.05em;color:var(--dim)}.delete-file-btn{position:absolute;top:8px;right:8px;width:16px;height:16px;display:flex;align-items:center;justify-content:center;color:var(--meta);opacity:0;transition:all .2s;border-radius:4px}.file-card:hover .delete-file-btn{opacity:1}.delete-file-btn:hover{background:var(--danger);color:#fff}.delete-file-btn svg{width:12px;height:12px;stroke-width:2}.upload-progress-container{width:100%;height:4px;background:#0000000d;border-radius:2px;overflow:hidden;margin-top:4px}.upload-progress-bar{height:100%;background:var(--dim);width:0%;transition:width .1s linear}.upload-status-text{font-size:.65rem;color:var(--dim);font-family:var(--font-ui);display:flex;justify-content:space-between;margin-top:2px}.upload-area{border:1px dashed var(--dim);border-radius:8px;padding:1rem;text-align:center;color:var(--dim);font-family:var(--font-ui);font-size:.8rem;font-weight:500;cursor:pointer;transition:all .2s;background:#00000005;display:flex;align-items:center;justify-content:center;gap:8px;opacity:.6;flex-shrink:0}.upload-area:hover{border-color:var(--accent);color:var(--accent);background:#a88b430d;opacity:1}.upload-area.large-empty-state{flex:1;flex-direction:column;border-style:dashed;border-width:1px;background:#fff3;gap:1rem;animation:pulseBorder 3s infinite}@keyframes pulseBorder{0%{border-color:#0000001a}50%{border-color:var(--accent)}to{border-color:#0000001a}}[data-theme=dark] .upload-area.large-empty-state{background:#ffffff05}.upload-icon-large{width:48px;height:48px;opacity:.3}#code-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:10000;display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}#code-modal.active{opacity:1;visibility:visible}.modal-window{width:90vw;height:90vh;background:var(--paper);border-radius:4px;position:relative;box-shadow:0 20px 50px #0000004d;display:flex;flex-direction:column;overflow:hidden}.modal-header{height:40px;border-bottom:1px solid var(--border);display:flex;justify-content:flex-end;align-items:center;padding:0 1rem;background:var(--bg);gap:1.5rem}.modal-action{cursor:pointer;color:var(--dim);font-weight:600;font-family:var(--font-ui);font-size:.8rem;letter-spacing:.1em;text-transform:uppercase;display:flex;align-items:center;gap:6px;transition:color .2s}.modal-action:hover{color:var(--accent)}.modal-body{flex:1;overflow:hidden;position:relative;display:flex;justify-content:center;align-items:center}.modal-body pre{width:100%;height:100%;margin:0;border:none;border-radius:0;max-height:none;padding:2rem}.modal-body img{max-width:100%;max-height:100%;object-fit:contain;filter:none}#code-modal .modal-body img{border-radius:4px;max-width:100%;max-height:85vh;object-fit:contain;background:transparent!important;mix-blend-mode:multiply!important}#code-modal .modal-window{background:var(--paper)}[data-theme=dark] #code-modal .modal-body img{filter:invert(1) hue-rotate(180deg) brightness(.97) contrast(1.2)!important;mix-blend-mode:screen!important;background:transparent!important}[data-theme=dark] #code-modal .modal-window{background:#000}#prompt-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:11000;display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;transition:all .3s ease}#prompt-modal.active{opacity:1;visibility:visible}.prompt-card{width:600px;max-width:90vw;background:var(--paper);border-radius:4px;box-shadow:0 10px 30px #00000026;padding:2rem;display:flex;flex-direction:column;gap:1rem}.prompt-title{font-family:var(--font-display);font-size:1.4rem;font-weight:600;color:var(--text)}.prompt-desc{font-family:var(--font-ui);font-size:.9rem;color:var(--dim);line-height:1.5}#custom-prompt-input{width:100%;height:200px;padding:1rem;background:var(--code);border:1px solid var(--border);border-radius:4px;font-family:var(--font-body);font-size:1rem;line-height:1.6;color:var(--text);resize:vertical;outline:none;transition:border-color .2s}#custom-prompt-input:focus{border-color:var(--accent)}.prompt-actions{display:flex;justify-content:flex-end;gap:1rem;margin-top:.5rem}#selection-popover{position:absolute;top:0;left:0;background:var(--popover-bg);color:var(--popover-text);border-radius:4px;padding:4px;display:flex;gap:2px;box-shadow:0 4px 12px #00000026;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:10000}#selection-popover.visible{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(-8px)}#selection-popover:after{content:"";position:absolute;bottom:-5px;left:50%;transform:translate(-50%);border-width:5px 5px 0;border-style:solid;border-color:var(--popover-bg) transparent transparent transparent}body.reader-mode #pop-ask{display:none!important}.pop-divider{width:1px;background:#fff3;margin:4px 2px}.pop-input-wrapper{display:none;align-items:center;padding:0 4px;height:32px}.pop-input-wrapper.active{display:flex}#pop-note-input{background:transparent;border:none;color:var(--popover-text);font-family:var(--font-ui);font-size:.85rem;width:180px;outline:none;margin-right:8px}#pop-note-input::placeholder{color:#ffffff80}#highlight-popover{position:absolute;background:var(--popover-bg);color:var(--popover-text);border-radius:4px;padding:4px;box-shadow:0 4px 12px #00000026;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease;z-index:10000}#highlight-popover.visible{opacity:1;visibility:visible;pointer-events:auto}header{height:60px;width:100%;flex-shrink:0;background:transparent;border-bottom:1px solid transparent;padding:0 3rem;display:flex;justify-content:space-between;align-items:center;font-family:var(--font-ui);-webkit-user-select:none;user-select:none;z-index:1000;transition:background .3s}body.reader-mode header,body.search-mode header,body.split-mode header,body.kb-split-mode header{background:var(--paper);border-bottom:1px solid var(--border)}.header-left{display:flex;align-items:center;gap:1rem}#doc-title{font-weight:600;letter-spacing:.05em;text-transform:uppercase;max-width:40vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.version-tag{color:var(--dim);font-size:.75rem;border-left:1px solid var(--border);padding-left:1rem;letter-spacing:.05em}.header-right{display:flex;align-items:center;gap:.5rem}.view-switcher{display:flex;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:2px;margin-right:12px;height:32px;transition:opacity .3s ease;align-items:center;z-index:1001}body:not(.reader-mode):not(.split-mode):not(.kb-split-mode):not(.reader-split-mode):not(.reader-fullscreen-mode) .view-switcher{display:none!important}.switcher-group{display:flex}.switcher-divider{width:1px;height:16px;background:var(--border);margin:0 4px}.switcher-item{padding:0 10px;display:flex;align-items:center;justify-content:center;font-family:var(--font-ui);font-size:.75rem;font-weight:600;color:var(--dim);cursor:pointer;border-radius:4px;transition:all .2s ease;-webkit-user-select:none;user-select:none;height:26px}.switcher-item:hover{color:var(--text)}.switcher-item.active{background:var(--paper);color:var(--text);box-shadow:0 1px 3px #0000001a;font-weight:700}[data-theme=dark] .switcher-item.active{background:#ffffff1a}body.split-mode #search-view{width:40%;border-right:1px solid var(--border);align-items:stretch;z-index:4}body.split-mode .search-container{padding:1rem 1.5rem 2rem;max-width:100%}body.split-mode .search-footer{left:20%;transform:translate(-50%);width:90%;max-width:380px;bottom:1.5rem}body.split-mode .search-input-box{border-radius:20px}body.kb-split-mode #kb-detail-view{width:40%}body.kb-split-mode #reader-frame{width:60%}#home-view{flex:1;width:100%;position:relative;display:flex;justify-content:center;align-items:center;background:transparent;color:var(--text);transition:opacity .4s ease;padding:2rem;z-index:1}#home-view.hidden{display:none}.home-content-wrapper{display:flex;gap:4rem;width:100%;max-width:1200px;min-height:60vh;align-items:flex-start;padding-top:6vh;justify-content:center}.home-left{flex:1.2;display:flex;flex-direction:column;justify-content:center;align-items:center;max-width:650px}@keyframes trackingIn{0%{letter-spacing:.2em;opacity:0;filter:blur(4px)}to{letter-spacing:-.03em;opacity:1;filter:blur(0)}}.drdots-logo{font-family:var(--font-display);font-size:6rem;font-weight:700;color:var(--text);margin-bottom:2rem;letter-spacing:-.03em;text-align:center;animation:trackingIn 1.2s cubic-bezier(.2,0,0,1)}.home-subtitle{font-family:var(--font-display);font-size:1.5rem;color:var(--text);text-align:center;margin-bottom:3.5rem;max-width:600px;line-height:1.3;font-weight:500;animation:fadeInUp .8s ease-out .4s backwards}.home-input-box{width:100%;background:var(--paper);border:1px solid var(--border);border-radius:16px;padding:.8rem 1rem;box-shadow:0 8px 30px #0000000a;display:flex;align-items:center;gap:12px;transition:all .3s cubic-bezier(.2,0,0,1);animation:fadeInUp .8s ease-out .6s backwards}.home-input-box:focus-within{border-color:var(--accent);box-shadow:0 12px 40px #a88b4326;transform:translateY(-2px)}.home-chat-input{flex:1;border:none;background:transparent;font-family:var(--font-body);font-size:1.15rem;color:var(--text);height:44px;line-height:24px;padding:10px 0;resize:none}.home-chat-input::placeholder{color:var(--meta);font-style:italic}.home-actions{display:flex;gap:8px;color:var(--dim)}.home-icon-btn{width:38px;height:38px;display:flex;align-items:center;justify-content:center;border-radius:8px;cursor:pointer;transition:all .2s}.home-icon-btn:hover{background:var(--hover-bg);color:var(--text)}.home-icon-btn.send-btn{background:var(--accent);color:var(--paper);box-shadow:0 4px 12px #a88b4333}.home-icon-btn.send-btn:hover{opacity:.9;transform:rotate(180deg)}.kb-selection-popup{position:fixed;background:var(--bg-surface);background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;box-shadow:0 12px 32px #0000001f,0 2px 6px #0000000a;padding:6px 0;z-index:10000;width:280px;animation:popupScaleIn .2s 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8px;font-family:var(--font-ui);font-size:.9rem;color:var(--text);outline:none;min-width:0}.sidebar-chat-input::placeholder{color:var(--meta);opacity:.7;font-style:italic}.sidebar-chat-send,.sidebar-chat-clear{width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:transparent;color:var(--dim);border-radius:50%;cursor:pointer;transition:all .2s cubic-bezier(.2,0,0,1)}.sidebar-chat-clear{margin-right:2px}.sidebar-chat-clear.hidden{width:0;margin:0;opacity:0;pointer-events:none;padding:0}.sidebar-chat-send{margin-left:2px}.sidebar-chat-send:hover,.sidebar-chat-clear:hover{background:var(--hover-bg);color:var(--accent);transform:scale(1.1)}.sidebar-chat-send svg,.sidebar-chat-clear svg{width:16px;height:16px;stroke-width:2}.sidebar-chat-send svg{margin-left:-2px}.auto-mode-header{position:sticky;top:0;z-index:10;background:var(--paper);padding:1rem 0;border-bottom:1px solid var(--border);margin-bottom:1rem;display:flex;justify-content:space-between;align-items:center;font-family:var(--font-ui);font-size:.85rem;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.05em;animation:slideDown .3s ease}.auto-exit-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--dim);border-radius:4px;transition:all .2s ease}.auto-exit-btn:hover{background:var(--hover-bg);color:var(--text)}.auto-exit-btn svg{width:16px;height:16px;stroke-width:2}.cursor-blink{display:inline-block;width:2px;height:1em;background:var(--accent);animation:blink 1s step-end infinite;vertical-align:text-bottom;margin-left:2px}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.method-selection-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;width:100%;animation:fadeIn .4s ease forwards;padding:0 4px}.method-card{background:transparent;border:1px solid var(--border);border-radius:6px;padding:16px 12px;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:10px;transition:all .2s ease;text-align:center}.method-card:hover{border-color:var(--accent);background:#a88b430d;transform:translateY(-2px);box-shadow:0 4px 12px #0000000d}.method-card.custom-method{grid-column:span 2;flex-direction:row;justify-content:center;padding:12px}.method-icon{color:var(--dim);transition:color .2s}.method-card:hover .method-icon{color:var(--accent)}.method-icon svg{width:24px;height:24px;stroke-width:1.5}.method-label{font-family:var(--font-ui);font-size:.75rem;font-weight:600;color:var(--dim);letter-spacing:.02em}.method-card:hover .method-label{color:var(--text)}.interpretation-player{display:flex;flex-direction:column;gap:1rem;padding-bottom:2rem;animation:slideUp .4s ease}.player-card{background:var(--paper);border:1px solid var(--border);border-radius:8px;padding:1.2rem;box-shadow:0 4px 20px #0000000d;display:flex;flex-direction:column;gap:1rem;position:relative;overflow:hidden}.player-card:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:var(--accent)}.player-header{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-ui);font-size:.75rem;color:var(--meta);text-transform:uppercase;letter-spacing:.05em;font-weight:600}.player-content{font-family:var(--font-body);font-size:1.05rem;line-height:1.6;color:var(--text);min-height:80px}.player-controls{display:flex;justify-content:space-between;align-items:center;margin-top:.5rem}.player-btn{background:transparent;border:1px solid var(--border);color:var(--dim);border-radius:4px;padding:6px 12px;font-size:.8rem;font-family:var(--font-ui);font-weight:600;cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:6px}.player-btn:hover{border-color:var(--accent);color:var(--accent)}.player-btn.primary{background:var(--accent);color:var(--paper);border-color:var(--accent)}.player-btn.primary:hover{opacity:.9;transform:translateY(-1px)}.player-progress{font-family:var(--font-ui);font-size:.8rem;color:var(--dim);font-variant-numeric:tabular-nums}.user-highlight{border-bottom:2px solid var(--accent);background-color:#a88b4333;cursor:pointer;transition:background-color .2s ease;box-decoration-break:clone;-webkit-box-decoration-break:clone}.user-highlight:hover{background-color:#a88b4366}.active-reading-highlight{background-color:#a88b4359;border-radius:3px;box-shadow:0 0 10px #a88b431a;box-decoration-break:clone;-webkit-box-decoration-break:clone;transition:background-color .5s ease;animation:highlightPulse 2s infinite alternate}@keyframes highlightPulse{0%{background-color:#a88b4340}to{background-color:#a88b4373}}.linked-highlight{border-bottom:2px solid;padding-bottom:1px;cursor:pointer;transition:background-color .2s ease}.linked-highlight.active-link{background-color:#a88b4326}.note-card{background:transparent;border-left:2px solid var(--border);padding:.5rem 0 .5rem 1.2rem;margin-bottom:1.5rem;border-radius:0;box-shadow:none;animation:slideIn .5s cubic-bezier(.2,0,0,1);transition:all .3s ease;cursor:default;display:flex;flex-direction:column;gap:.4rem;position:relative}.note-card:hover{background:#00000005;border-radius:0 4px 4px 0}[data-theme=dark] .note-card:hover{background:#ffffff08}.note-card.active-link{border-left-width:3px;background:#a88b430d;border-radius:0 4px 4px 0}.note-body{font-family:var(--font-body);color:var(--text);font-size:1.05rem;line-height:1.6}.note-footer{display:flex;justify-content:space-between;align-items:center;font-family:var(--font-ui);font-size:.65rem;color:var(--meta);font-variant-numeric:tabular-nums;letter-spacing:.05em;opacity:.6;margin-top:4px}.delete-btn{cursor:pointer;opacity:0;transition:all .2s ease;color:var(--dim);display:flex;align-items:center}.note-card:hover .delete-btn{opacity:1}.delete-btn.hover{color:var(--danger)}.delete-btn.confirming{color:var(--danger);opacity:1;animation:pulse 1s infinite}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60%;color:var(--meta);font-family:var(--font-ui);font-size:.85rem;text-align:center;opacity:.5;font-style:italic}.empty-state svg{width:24px;height:24px;margin-bottom:12px;stroke-width:1;opacity:.8}#highlight-popover{position:absolute;top:0;left:0;background:var(--popover-bg);color:var(--popover-text);border-radius:4px;padding:4px;display:none;box-shadow:0 4px 12px #00000026;z-index:10000}#highlight-popover.visible{display:flex}#highlight-popover:after{content:"";position:absolute;bottom:-5px;left:50%;transform:translate(-50%);border-width:5px 5px 0;border-style:solid;border-color:var(--popover-bg) transparent transparent transparent}#slides-view{position:fixed;top:0;right:0;bottom:0;left:0;background:var(--bg);z-index:20000;display:flex;flex-direction:column;opacity:0;visibility:hidden;transition:all .3s ease}#slides-view.active{opacity:1;visibility:visible}.slides-header{height:60px;display:flex;justify-content:space-between;align-items:center;padding:0 2rem;border-bottom:1px solid var(--border);background:var(--paper)}.slides-title{font-family:var(--font-display);font-weight:700;font-size:1.2rem;color:var(--text)}.slides-stage{flex:1;display:flex;justify-content:center;align-items:center;padding:2rem;background:#00000005;overflow:hidden}.slides-stage.full-mode{position:fixed;top:0;left:0;width:100vw;height:100vh;z-index:9999;background:#000;padding:0;margin:0}.slides-stage.full-mode .slide-card{width:100%;height:100%;max-width:none;max-height:none;aspect-ratio:auto;border:none;border-radius:0;margin:0;box-shadow:none;animation:none}.exit-fullscreen-btn{position:fixed;top:30px;right:30px;width:50px;height:50px;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:50%;z-index:10001;cursor:pointer;color:#ffffffb3;display:none;justify-content:center;align-items:center;transition:all .2s ease}.exit-fullscreen-btn:hover{background:#fff3;color:#fff;transform:scale(1.1)}.slides-stage.full-mode .exit-fullscreen-btn{display:flex}.slide-card{width:90vw;max-width:1200px;aspect-ratio:16/9;max-height:calc(100vh - 140px);margin:1rem 0;background:var(--paper);box-shadow:0 20px 50px #0000001a;border-radius:8px;padding:0;display:flex;flex-direction:column;justify-content:center;font-size:1.2rem;overflow:hidden;animation:slideUp .4s cubic-bezier(.2,0,0,1)}.slide-card h1{font-size:2.5rem;margin-bottom:1.5rem;text-align:center;color:var(--accent);border-bottom:none}.slide-card h2{font-size:2rem;margin-bottom:1rem;border-bottom:2px solid var(--border);padding-bottom:10px}.slide-card ul{font-size:1.3rem;line-height:1.8}.slide-card li{margin-bottom:.8rem}.slides-controls{height:60px;display:flex;justify-content:center;align-items:center;gap:1rem;padding:1rem;background:#f8f8f8;border-top:1px solid var(--border)}.slides-stage.full-mode .slide-card{width:100vw;height:100vh;max-width:none;border-radius:0;border:none;box-shadow:none}.slides-stage.full-mode{padding:0;z-index:20002;position:fixed;top:0;right:0;bottom:0;left:0;background:#000}.slide-counter{font-family:var(--font-ui);font-weight:600;color:var(--dim)}body.reader-scroll-mode #viewport{overflow-y:auto;padding-bottom:50px;scroll-behavior:smooth;display:flex;flex-direction:column;align-items:center;gap:0;padding-top:2rem}body.reader-scroll-mode .slide{position:relative;opacity:1;visibility:visible;transform:none;filter:none;pointer-events:auto;width:100%;max-width:100%;height:auto;min-height:auto;background:transparent;margin:0;padding:0 20px;box-shadow:none;border:none;flex-shrink:0}[data-theme=dark] body.reader-scroll-mode .slide{background:transparent;border-color:transparent}body.reader-scroll-mode #viewport::-webkit-scrollbar{width:8px}body.reader-scroll-mode #viewport::-webkit-scrollbar-track{background:transparent}body.reader-scroll-mode #viewport::-webkit-scrollbar-thumb{background:#0000001a;border-radius:4px}body.reader-scroll-mode #viewport::-webkit-scrollbar-thumb:hover{background:#0003}#sidebar-toggle-inner{position:absolute;right:15px;top:50%;transform:translateY(-50%);color:var(--dim);cursor:pointer;transition:all .2s ease;display:flex}#sidebar-toggle-inner:hover{color:var(--accent);background:var(--hover-bg)}body:not(.reader-mode) #companion-toggle{display:none!important}body.reader-mode.companion-active #companion-toggle{display:none!important}body.reader-mode:not(.companion-active) #companion-toggle{display:flex!important}@media(max-width:768px){#reader-frame{border-radius:0;box-shadow:none;margin-top:0;height:calc(100vh - 60px)}.slide{padding:4rem 1.5rem 3rem}body.companion-active #ai-sidebar{display:none}}@keyframes slideOutCollapse{0%{opacity:1;transform:translateY(0);max-height:500px;margin-bottom:2rem}to{opacity:0;transform:translateY(-10px);max-height:0;margin:0;padding:0}}.meta-correspondence{font-family:var(--font-ui);font-size:.9rem;color:var(--meta);background:#00000005;border-left:3px solid var(--accent);padding:1rem;margin:1.5rem 0;line-height:1.6;border-radius:4px}[data-theme=dark] .meta-correspondence{background:#ffffff08}.meta-doi{font-family:var(--font-ui);font-size:.8em;color:var(--meta);background:#0000000a;padding:2px 6px;border-radius:4px;border:1px solid rgba(0,0,0,.08);margin:0 4px;-webkit-user-select:text;user-select:text;display:inline-block;vertical-align:middle}[data-theme=dark] .meta-doi{background:#ffffff14;border-color:#ffffff1a;color:var(--dim)}.meta-date-box{display:inline-block;background:rgba(var(--accent-rgb),.08);color:var(--dim);font-family:var(--font-ui);font-size:.8em;padding:2px 8px;border-radius:4px;margin:0 4px;border:1px solid rgba(var(--accent-rgb),.15);white-space:nowrap;vertical-align:middle}[data-theme=dark] .meta-date-box{background:rgba(var(--accent-rgb),.15);border-color:rgba(var(--accent-rgb),.25);color:var(--text)}.reader-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text);gap:1rem}.reader-loading-spinner svg{animation:spin 1s linear infinite;color:var(--accent)}.reader-loading-text{font-size:1rem;color:var(--dim)}.reader-progress-bar{width:200px;height:4px;background:#0000001a;border-radius:2px;overflow:hidden}[data-theme=dark] .reader-progress-bar{background:#ffffff1a}.reader-progress-value{width:0%;height:100%;background:var(--accent);border-radius:2px;animation:simpleProgress 2s ease-in-out infinite}@keyframes simpleProgress{0%{width:0%;transform:translate(-100%)}50%{width:70%;transform:translate(0)}to{width:100%;transform:translate(100%)}}.doc-meta-section-title{font-size:.85rem!important;font-weight:600!important;color:var(--dim)!important;opacity:.7;margin-top:1.5rem!important;margin-bottom:.3rem!important;padding-bottom:.2rem!important;border-bottom:1px dashed var(--border)!important;text-transform:uppercase;letter-spacing:.08em}.doc-meta-section-content{font-size:.85rem;line-height:1.5;color:var(--dim);opacity:.7;padding:.5rem 0;margin-bottom:1rem}.doc-meta-section-content p{font-size:.85rem!important;line-height:1.5!important;color:var(--dim)!important;margin-bottom:.4rem!important}.doc-meta-section-content ul,.doc-meta-section-content ol{font-size:.85rem;color:var(--dim)}.doc-meta-section-title:hover,.doc-meta-section-content:hover{opacity:1}[data-theme=dark] .doc-meta-section-title{color:var(--meta)!important}[data-theme=dark] .doc-meta-section-content{color:var(--meta)}.inline-cite{color:var(--accent);cursor:pointer;transition:all .2s;border-bottom:1px dotted transparent}.inline-cite:hover{border-bottom-color:var(--accent);opacity:.8}#companion-loading-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--paper);z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;animation:fadeIn .4s cubic-bezier(.2,0,0,1) forwards;padding:2rem}#companion-loading-overlay .cl-icon{width:48px;height:48px;color:var(--accent);margin-bottom:24px;filter:drop-shadow(0 0 15px rgba(168,139,67,.4));animation:floatIcon 3s ease-in-out infinite}#companion-loading-overlay .cl-text{font-family:var(--font-display);font-size:1.2rem;font-weight:500;color:var(--text);margin-bottom:8px;letter-spacing:.02em}#companion-loading-overlay .cl-subtext{font-family:var(--font-ui);font-size:.8rem;color:var(--dim);transition:opacity 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var(--border);display:flex;justify-content:space-between;align-items:center;background:#00000003}.summary-modal-title{font-family:var(--font-display);font-size:1.4rem;font-weight:600;color:var(--text);display:flex;align-items:center;gap:10px}.summary-modal-header .cl-icon{width:24px;height:24px;color:var(--accent)}.summary-modal-close{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;color:var(--dim);cursor:pointer;transition:all .2s}.summary-modal-close:hover{background:#0000000d;color:var(--text)}.summary-modal-content{padding:2rem 2.5rem;overflow-y:auto;font-family:var(--font-body);font-size:1rem;line-height:1.7;color:var(--text)}.summary-modal-content p{margin-bottom:1rem}.summary-modal-content strong{font-weight:600;color:var(--accent)}body.no-scroll{overflow:hidden!important}body.no-scroll>*:not(#summary-modal-overlay):not(#podcast-transcript-modal){pointer-events:none!important;-webkit-user-select:none!important;user-select:none!important;filter:blur(1px)}#summary-modal-overlay,#podcast-transcript-modal{pointer-events:auto!important}body.no-scroll iframe{pointer-events:none!important}mark{background-color:#ffd70066;color:inherit;padding:0;border-radius:2px}mark.current-match{background-color:#ffa500cc;box-shadow:0 0 0 2px #ffa50066}.reader-search-bar{position:fixed;top:75px;right:320px;z-index:50000;display:flex;align-items:center;background:var(--paper);border:1px solid var(--border);border-radius:8px;padding:8px 12px;gap:8px;box-shadow:0 8px 30px #0000001f;transition:all .2s cubic-bezier(.2,0,0,1);width:320px;max-width:90vw}.reader-search-bar.hidden{opacity:0;visibility:hidden;transform:translateY(-10px);pointer-events:none}#reader-search-input{flex:1;border:none;background:transparent;font-family:var(--font-ui);font-size:.9rem;color:var(--text);outline:none;min-width:0}#reader-search-input::placeholder{color:var(--dim)}.search-count{font-family:var(--font-ui);font-size:.8rem;color:var(--dim);font-variant-numeric:tabular-nums;white-space:nowrap;-webkit-user-select:none;user-select:none;margin-right:4px}.search-nav-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:4px;cursor:pointer;color:var(--dim);transition:all .1s ease}.search-nav-btn:hover{background:#0000000d;color:var(--text)}.search-nav-btn:active{background:#0000001a}.search-nav-btn+.search-close-btn{margin-left:12px;position:relative}.search-nav-btn+.search-close-btn:before{content:"";position:absolute;left:-8px;top:4px;bottom:4px;width:1px;background:var(--border)}.search-close-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:4px;cursor:pointer;color:var(--dim);transition:all .1s ease}.search-close-btn:hover{color:var(--danger);background:#ff00000d}.hero-collapsed{width:100%;height:24px;display:flex;justify-content:center;align-items:center;cursor:pointer;color:var(--dim);opacity:.4;transition:all .2s ease;margin-bottom:8px;border-bottom:1px solid transparent}.hero-collapsed:hover{opacity:1;background:var(--bg-secondary);color:var(--accent);border-bottom:1px solid var(--border)}.hero-collapsed svg{width:16px;height:16px;stroke-width:2.5px}.gc-highlight{background-color:transparent;border-bottom:2px solid var(--accent, #a88b43);padding:0;border-radius:0;transition:background-color .2s ease;cursor:pointer}.gc-highlight:hover{background-color:#a88b4326}body.is-pdf-view #viewport{overflow-y:auto!important;overflow-x:hidden!important}.dr-pdf-container{display:block;width:100%;min-height:100%;height:auto;overflow:visible;padding:2rem 0;background:var(--paper);text-align:center}.dr-pdf-wrapper{position:relative;display:inline-block;margin:0 auto 2rem;box-shadow:0 4px 15px #00000026,0 0 0 1px #0000000d;background-color:#fff;max-width:none;text-align:left}.dr-pdf-canvas{display:block;z-index:1}.dr-text-layer{position:absolute;left:0;top:0;right:0;bottom:0;overflow:hidden;opacity:1;line-height:1;z-index:2}.dr-text-layer>span{color:transparent;position:absolute;white-space:pre;cursor:text;transform-origin:0% 0%}.dr-text-layer 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