:root{--lx-50:#eef1f8;--lx-100:#d9e0f0;--lx-200:#b3c0e0;--lx-300:#8ca1cf;--lx-400:#5c7ab8;--lx-500:#2c4a8a;--lx-600:#24406f;--lx-700:#1d3558;--lx-800:#172a42;--lx-900:#101c2e;--pr-300:#c4b5fd;--pr-400:#a78bfa;--pr-500:#6d5ad8;--pr-600:#5b4cbc;--pr-700:#4c3fa3;--pnk-400:#d9739b;--pnk-500:#c4557d;--amb-400:#d9a441;--amb-500:#b9852b;--success:#15803d;--warning:#b45309;--danger:#b91c1c;--info:#0369a1;--glass:#ffffff0f;--glass-strong:#ffffff1f;--glass-border:#ffffff29;--n-950:#0b0e15;--n-900:#131722;--n-850:#181d29;--n-800:#1f2533;--n-700:#2a3142;--n-600:#3b4254;--l-surface:#f5f6f8;--l-paper:#fff;--l-ink:#131721;--l-muted:#5b6472;--l-line:#e2e5eb;--lx-shadow-sm:0 1px 2px #0d12200d;--lx-shadow:0 4px 14px -2px #0d122014, 0 2px 6px -2px #0d12200a;--lx-shadow-md:0 8px 28px -4px #0d12201a, 0 4px 10px -2px #0d12200d;--lx-shadow-lg:0 20px 48px -8px #0d122024, 0 8px 18px -4px #0d122012;--lx-shadow-xl:0 30px 72px -10px #0d122033, 0 12px 28px -6px #0d122017;--lx-glow:0 0 0 1px #2c4a8a29, 0 4px 18px #2c4a8a2e;--lx-glow-lg:0 0 0 1px #2c4a8a3d, 0 14px 40px #2c4a8a42;--pr-glow:0 0 0 1px #6d5ad829, 0 4px 18px #6d5ad838;--r-xs:6px;--r-sm:9px;--r-md:12px;--r-lg:16px;--r-xl:22px;--r-2xl:28px;--r-full:999px;--e-spring:cubic-bezier(.34, 1.56, .64, 1);--e-out:cubic-bezier(.16, 1, .3, 1);--e-in-out:cubic-bezier(.65, 0, .35, 1);--grad-brand:linear-gradient(135deg, #2c4a8a 0%, #1d3558 100%);--grad-brand-2:linear-gradient(135deg, #24406f 0%, #131722 100%);--grad-fire:linear-gradient(135deg, #b9852b 0%, #172a42 100%);--grad-aurora:linear-gradient(120deg, #172a42 0%, #2c4a8a 50%, #5b4cbc 100%);--grad-mesh:radial-gradient(at 30% 30%, #2c4a8a40 0px, transparent 55%), radial-gradient(at 75% 20%, #5b4cbc2e 0px, transparent 55%), radial-gradient(at 20% 85%, #24406f33 0px, transparent 55%), radial-gradient(at 85% 85%, #6d5ad824 0px, transparent 55%)}html.dark{--l-surface:var(--n-900);--l-paper:var(--n-850);--l-ink:#e6ecf5;--l-muted:#8b95a9;--l-line:#242b3a}.lx-h-hero{letter-spacing:-.04em;font-feature-settings:"ss01", "cv11";font-size:clamp(2.4rem,5.4vw,4.4rem);font-weight:800;line-height:1.04}.lx-h-display{letter-spacing:-.03em;font-size:clamp(1.9rem,4vw,3rem);font-weight:750;line-height:1.1}.lx-h-title{letter-spacing:-.02em;font-size:clamp(1.3rem,2.4vw,1.8rem);font-weight:700;line-height:1.2}.lx-lede{color:var(--l-muted);max-width:58ch;font-size:clamp(1rem,1.4vw,1.18rem);line-height:1.65}.lx-text-grad{background:var(--grad-brand);color:#0000;-webkit-background-clip:text;background-clip:text}.lx-text-grad-2{background:var(--grad-brand-2);color:#0000;-webkit-background-clip:text;background-clip:text}.lx-btn{border-radius:var(--r-md);letter-spacing:-.005em;cursor:pointer;height:44px;transition:transform .18s var(--e-spring), box-shadow .22s var(--e-out), background .18s;-webkit-user-select:none;user-select:none;white-space:nowrap;border:1px solid #0000;justify-content:center;align-items:center;gap:8px;padding:0 20px;font-family:inherit;font-size:14.5px;font-weight:600;text-decoration:none;display:inline-flex;position:relative}.lx-btn:active{transform:scale(.98)translateY(.5px)}.lx-btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important}.lx-btn-primary{background:var(--lx-500);color:#fff;box-shadow:var(--lx-shadow-md), inset 0 0 0 1px #ffffff1f}.lx-btn-primary:hover:not(:disabled){background:var(--lx-600);box-shadow:var(--lx-shadow-lg), inset 0 0 0 1px #ffffff29;transform:translateY(-1.5px)}.lx-btn-secondary{background:var(--l-paper);color:var(--l-ink);border-color:var(--l-line);box-shadow:var(--lx-shadow-sm)}.lx-btn-secondary:hover:not(:disabled){background:var(--l-surface);border-color:var(--lx-500);color:var(--lx-600);box-shadow:var(--lx-shadow);transform:translateY(-1px)}.lx-btn-glass{background:var(--glass);color:#fff;border-color:var(--glass-border);-webkit-backdrop-filter:blur(18px)saturate(1.5)}.lx-btn-glass:hover:not(:disabled){background:var(--glass-strong);transform:translateY(-1px);box-shadow:0 10px 30px #00000038}.lx-btn-ghost{color:var(--l-ink);background:0 0}.lx-btn-ghost:hover:not(:disabled){background:var(--l-line)}.lx-btn-sm{border-radius:var(--r-sm);height:34px;padding:0 14px;font-size:13px}.lx-btn-lg{border-radius:var(--r-lg);height:52px;padding:0 28px;font-size:15.5px}.lx-icon-btn{border-radius:var(--r-sm);width:36px;height:36px;color:var(--l-muted);cursor:pointer;transition:all .15s var(--e-out);background:0 0;border:none;place-items:center;display:inline-grid}.lx-icon-btn:hover{background:var(--l-line);color:var(--l-ink)}.lx-card{background:var(--l-paper);border:1px solid var(--l-line);border-radius:var(--r-lg);box-shadow:var(--lx-shadow);transition:transform .24s var(--e-spring), box-shadow .3s var(--e-out)}.lx-card-hover:hover{box-shadow:var(--lx-shadow-lg);border-color:#0e93e938;transform:translateY(-4px)}.lx-card-glass{background:var(--glass);-webkit-backdrop-filter:blur(24px)saturate(1.4);border:1px solid var(--glass-border);border-radius:var(--r-xl);box-shadow:var(--lx-shadow-lg)}.lx-feature{background:var(--l-paper);border:1px solid var(--l-line);border-radius:var(--r-lg);transition:all .28s var(--e-spring);align-content:start;gap:14px;padding:28px;display:grid;position:relative;overflow:hidden}.lx-feature:before{content:"";background:radial-gradient(600px circle at var(--mx,50%) var(--my,0%), #0e93e914, transparent 40%);opacity:0;pointer-events:none;transition:opacity .3s;position:absolute;inset:0}.lx-feature:hover:before{opacity:1}.lx-feature:hover{box-shadow:var(--lx-shadow-lg);border-color:#0e93e947;transform:translateY(-4px)}.lx-feature-icon{background:var(--lx-500);color:#fff;border-radius:12px;flex-shrink:0;place-items:center;width:44px;height:44px;display:grid;box-shadow:0 4px 14px #2c4a8a40}.lx-feature-icon.purple{background:#5b4cbc;box-shadow:0 4px 14px #5b4cbc40}.lx-feature-icon.pink{background:#a3396b;box-shadow:0 4px 14px #a3396b40}.lx-feature-icon.amber{background:#b9852b;box-shadow:0 4px 14px #b9852b40}.lx-feature-icon.teal{background:#0f766e;box-shadow:0 4px 14px #0f766e40}.lx-feature-icon.green{background:#15803d;box-shadow:0 4px 14px #15803d40}.lx-pill{border-radius:var(--r-full);background:var(--lx-100);color:var(--lx-700);border:1px solid #0e93e92e;align-items:center;gap:6px;padding:5px 12px;font-size:12px;font-weight:600;display:inline-flex}.lx-pill.purple{color:#6d28d9;background:#ede9fe;border-color:#8b5cf633}.lx-pill.pink{color:#be185d;background:#fce7f3;border-color:#ec489933}.lx-pill.green{color:#065f46;background:#d1fae5;border-color:#10b98133}.lx-pill.amber{color:#92400e;background:#fef3c7;border-color:#f59e0b33}.lx-input,.lx-select,.lx-textarea{background:var(--l-paper);border:1.5px solid var(--l-line);border-radius:var(--r-md);width:100%;height:44px;color:var(--l-ink);transition:all .18s var(--e-out);padding:0 14px;font-family:inherit;font-size:14.5px}.lx-textarea{resize:vertical;height:auto;min-height:96px;padding:12px 14px;line-height:1.5}.lx-input:hover,.lx-select:hover,.lx-textarea:hover{border-color:var(--lx-300)}.lx-input:focus,.lx-select:focus,.lx-textarea:focus{border-color:var(--lx-500);background:var(--l-paper);outline:none;box-shadow:0 0 0 4px #0e93e91f}.lx-input::placeholder,.lx-textarea::placeholder{color:var(--l-muted)}.lx-label{color:var(--l-ink);letter-spacing:-.005em;margin-bottom:6px;font-size:12.5px;font-weight:600;display:block}@keyframes lx-fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes lx-fade-in-up{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes lx-scale-in{0%{opacity:0;transform:scale(.94)}to{opacity:1;transform:scale(1)}}@keyframes lx-shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}@keyframes lx-float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes lx-glow-pulse{0%,to{box-shadow:0 0 #0e93e966}50%{box-shadow:0 0 0 8px #0e93e900}}@keyframes lx-aurora{0%{background-position:0%}50%{background-position:100%}to{background-position:0%}}@keyframes lx-marquee{0%{transform:translate(0)}to{transform:translate(-50%)}}.lx-anim-in{animation:lx-fade-in .4s var(--e-out) both}.lx-anim-in-up{animation:lx-fade-in-up .6s var(--e-out) both}.lx-anim-scale-in{animation:lx-scale-in .4s var(--e-spring) both}.lx-anim-float{animation:lx-float 3.2s var(--e-in-out) infinite}.lx-anim-pulse{animation:lx-glow-pulse 2.4s var(--e-in-out) infinite}.lx-stagger>:first-child{animation-delay:40ms}.lx-stagger>:nth-child(2){animation-delay:.1s}.lx-stagger>:nth-child(3){animation-delay:.16s}.lx-stagger>:nth-child(4){animation-delay:.22s}.lx-stagger>:nth-child(5){animation-delay:.28s}.lx-stagger>:nth-child(6){animation-delay:.34s}.lx-stagger>:nth-child(7){animation-delay:.4s}.lx-stagger>:nth-child(8){animation-delay:.46s}.lx-overlay{-webkit-backdrop-filter:blur(8px);z-index:1000;animation:lx-fade-in .2s var(--e-out);background:#080c148c;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.lx-modal{background:var(--l-paper);border-radius:var(--r-xl);box-shadow:var(--lx-shadow-xl);border:1px solid var(--l-line);width:100%;max-width:560px;max-height:88dvh;animation:lx-scale-in .3s var(--e-spring);overflow-y:auto}.lx-toast{z-index:1001;background:var(--n-900);color:#fff;border-radius:var(--r-md);animation:lx-fade-in-up .3s var(--e-spring);align-items:center;gap:10px;max-width:380px;padding:12px 18px;font-size:14px;font-weight:500;display:flex;position:fixed;bottom:24px;right:24px;box-shadow:0 12px 36px #00000061}.lx-toast.success{background:linear-gradient(135deg,#059669,#10b981)}.lx-toast.error{background:linear-gradient(135deg,#dc2626,#ef4444)}.lx-toast.info{background:linear-gradient(135deg,#0360a1,#0e93e9)}.lx-skel{background:linear-gradient(90deg, var(--l-line) 25%, var(--l-surface) 40%, var(--l-line) 55%);border-radius:var(--r-sm);background-size:200% 100%;animation:1.4s infinite lx-shimmer}.lx-surface{background:var(--l-surface);border:1px solid var(--l-line);border-radius:var(--r-lg)}.lx-divider{background:linear-gradient(90deg, transparent, var(--l-line), transparent);border:0;height:1px;margin:20px 0}.lx-aurora{background:var(--grad-mesh);filter:blur(80px)saturate();opacity:.35;z-index:0;pointer-events:none;position:absolute;inset:0}html.dark .lx-aurora{opacity:.25}.lx-noise:after{content:"";pointer-events:none;z-index:0;opacity:.5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.14'/%3E%3C/svg%3E");position:absolute;inset:0}.lx-orb{filter:blur(60px);opacity:.5;pointer-events:none;border-radius:50%;position:absolute}.lx-orb.blue{background:#2c4a8a}.lx-orb.purple{background:#5b4cbc}.lx-orb.pink{background:#a3396b}:focus-visible{outline:2.5px solid var(--lx-500);outline-offset:2px;border-radius:4px}.lx-dropzone{border:2px dashed var(--l-line);border-radius:var(--r-lg);text-align:center;background:var(--l-surface);transition:all .2s var(--e-out);cursor:pointer;padding:40px}.lx-dropzone:hover,.lx-dropzone.dragging{border-color:var(--lx-500);background:var(--lx-50);transform:scale(1.01)}.lx-grad-border{border-radius:var(--r-md);background:var(--grad-brand);padding:2px;position:relative}.lx-grad-border>.lx-grad-inner{background:var(--l-paper);border-radius:calc(var(--r-md) - 2px)}.lx-chip-ai{border-radius:var(--r-full);background:var(--lx-500);color:#fff;align-items:center;gap:5px;padding:3px 10px;font-size:11px;font-weight:700;display:inline-flex;box-shadow:0 2px 8px #2c4a8a4d}.lx-tool-btn{border-radius:var(--r-sm);width:32px;height:32px;color:var(--l-muted);cursor:pointer;transition:all .15s var(--e-out);background:0 0;border:none;place-items:center;font-family:inherit;display:grid}.lx-tool-btn:hover{background:var(--lx-50);color:var(--lx-600);transform:translateY(-1px)}.lx-tool-btn.active{background:var(--lx-500);color:#fff;box-shadow:var(--lx-glow)}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
.refs-panel{flex-direction:column;height:100%;font-family:inherit;display:flex}.refs-tabs{border-bottom:1px solid var(--line);gap:4px;padding:10px 10px 0;display:flex}.refs-tab{color:var(--muted);cursor:pointer;transition:all .15s var(--ease);background:0 0;border:none;border-bottom:2px solid #0000;border-radius:6px 6px 0 0;flex:1;justify-content:center;align-items:center;gap:6px;padding:8px 10px;font-size:13px;font-weight:600;display:inline-flex}.refs-tab:hover{color:var(--ink);background:var(--surface-2)}.refs-tab.active{color:var(--accent-dark);border-bottom-color:var(--accent);background:var(--accent-soft)}.refs-error{color:#b32228;color:lab(40.1691% 57.0293 36.0154);background:#de3b3d26;background:lab(51.5803% 63.2457 38.9399/.15);border:1px solid #de3b3d4d;border:1px solid lab(51.5803% 63.2457 38.9399/.3);border-radius:8px;margin:10px;padding:8px 10px;font-size:12px;line-height:1.4}.refs-search{background:var(--surface-2);border:1px solid var(--line-strong);border-radius:9px;align-items:center;gap:6px;height:36px;margin:12px 12px 8px;padding:0 10px;display:flex}.refs-search input{color:var(--ink);background:0 0;border:none;outline:none;flex:1;font-family:inherit;font-size:13px}.refs-search svg{color:var(--muted);flex-shrink:0}.refs-clear{cursor:pointer;color:var(--muted);background:0 0;border:none;place-items:center;padding:2px;display:grid}.refs-clear:hover{color:var(--ink)}.refs-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:0 12px 8px;display:flex}.refs-count{color:var(--muted);font-size:12px;font-weight:600}.refs-iconbtn{cursor:pointer;width:26px;height:26px;color:var(--muted);background:0 0;border:none;border-radius:6px;place-items:center;transition:all .12s;display:inline-grid}.refs-iconbtn:hover:not(:disabled){background:var(--surface-3);color:var(--ink)}.refs-iconbtn:disabled{opacity:.4;cursor:not-allowed}.refs-trash:hover{color:#cc272e;color:lab(45.7636% 63.3818 40.1799)}.refs-empty{color:var(--muted);text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:8px;padding:32px 16px;display:flex}.refs-hint{color:var(--faint);margin:0;font-size:12px}.refs-list{flex-direction:column;flex:1;gap:8px;margin:0;padding:8px 10px;list-style:none;display:flex;overflow-y:auto}.refs-item{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;gap:6px;padding:10px;display:grid}.refs-item-head{align-items:flex-start;gap:8px;display:flex}.refs-item-title{color:var(--ink);flex:1;font-size:13px;font-weight:600;line-height:1.3}.refs-item-meta{color:var(--muted);font-size:11px;line-height:1.3}.refs-item-doi,.refs-item-tags{color:var(--faint);align-items:center;gap:4px;font-size:11px;display:flex}.refs-item-doi svg,.refs-item-tags svg{flex-shrink:0}.refs-item-preview{background:var(--accent-soft);color:var(--accent-dark);word-break:break-word;border-radius:6px;padding:6px 8px;font-size:11.5px;font-style:italic;line-height:1.35}.refs-item-actions{flex-wrap:wrap;gap:6px;display:flex}.refs-mini{border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:6px;padding:4px 8px;font-family:ui-monospace,monospace;font-size:11px;font-weight:600;transition:all .12s}.refs-mini:hover{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-dark)}.refs-add{gap:8px;padding:12px;display:grid}.refs-add label{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;font-size:11px;font-weight:700}.refs-add input,.refs-add select{border:1px solid var(--line-strong);background:var(--surface);height:36px;color:var(--ink);border-radius:8px;padding:0 10px;font-family:inherit;font-size:13px}.refs-add input:focus,.refs-add select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.refs-add-modes{gap:4px;margin-bottom:4px;display:flex}.refs-add-modes .refs-tab{flex:1}.refs-btn{background:var(--accent-dark);color:#fff;cursor:pointer;border:none;border-radius:9px;justify-content:center;align-items:center;gap:6px;height:38px;margin-top:4px;padding:0 14px;font-size:13px;font-weight:600;transition:filter .15s;display:inline-flex}.refs-btn:hover:not(:disabled){filter:brightness(1.06)}.refs-btn:disabled{opacity:.55;cursor:not-allowed}.refs-styles{gap:12px;padding:12px;display:grid}.refs-styles-list{flex-wrap:wrap;gap:6px;display:flex}.refs-style-pill{border:1px solid var(--line-strong);background:var(--surface);color:var(--muted);cursor:pointer;border-radius:999px;padding:6px 12px;font-size:12px;font-weight:600;transition:all .12s}.refs-style-pill:hover{border-color:var(--accent);color:var(--ink)}.refs-style-pill.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-dark)}.refs-preview{border-top:1px solid var(--line);padding-top:12px}.refs-preview h5{color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin:8px 0 4px;font-size:11px;font-weight:700}.refs-preview-text{color:var(--ink);background:var(--accent-soft);border-radius:8px;margin:0 0 8px;padding:8px 10px;font-size:13px;font-style:italic}.refs-preview-bib{color:var(--ink);background:var(--surface-2);border-radius:6px;margin:0 0 6px;padding:6px 10px;font-size:12px;line-height:1.5}.ai-improve-menu{background:var(--surface);border:1px solid var(--line-strong);z-index:200;border-radius:10px;gap:2px;min-width:180px;padding:4px;display:grid;position:absolute;box-shadow:0 8px 24px #0000001f,0 2px 6px #00000014}.ai-improve-menu button{text-align:left;width:100%;color:var(--ink);cursor:pointer;background:0 0;border:none;border-radius:6px;align-items:center;gap:8px;padding:8px 12px;font-family:inherit;font-size:13px;display:flex}.ai-improve-menu button:hover{background:var(--accent-soft);color:var(--accent-dark)}.ai-improve-menu .ai-divider{background:var(--line);height:1px;margin:2px 4px}.ai-improve-menu .ai-section{text-transform:uppercase;color:var(--faint);letter-spacing:.06em;padding:6px 12px 2px;font-size:10px;font-weight:700}.ai-improve-panel{flex:1;gap:10px;padding:12px;display:grid;overflow-y:auto}.ai-improve-row{gap:4px;display:grid}.ai-improve-row label{text-transform:uppercase;color:var(--muted);letter-spacing:.05em;font-size:11px;font-weight:700}.ai-improve-row textarea{resize:vertical;border:1px solid var(--line-strong);width:100%;min-height:70px;color:var(--ink);background:var(--surface);border-radius:8px;padding:8px 10px;font-family:inherit;font-size:13px;line-height:1.4}.ai-improve-row textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.ai-improve-row input[type=text],.ai-improve-row input[type=number]{border:1px solid var(--line-strong);height:34px;color:var(--ink);background:var(--surface);border-radius:8px;padding:0 10px;font-family:inherit;font-size:13px}.ai-improve-row input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.ai-improve-chips{flex-wrap:wrap;gap:6px;display:flex}.ai-chip{border:1px solid var(--line-strong);background:var(--surface);height:28px;color:var(--muted);cursor:pointer;border-radius:999px;padding:0 10px;font-size:12px;font-weight:600;transition:all .12s}.ai-chip:hover{border-color:var(--accent);color:var(--ink)}.ai-chip.active{background:var(--accent-soft);border-color:var(--accent);color:var(--accent-dark)}.ai-improve-actions{flex-wrap:wrap;gap:6px;display:flex}.ai-improve-out{background:var(--surface-2);border:1px solid var(--line);color:var(--ink);white-space:pre-wrap;border-radius:8px;max-height:300px;margin:10px 0;padding:10px 12px;font-size:13px;line-height:1.5;overflow-y:auto}.study-tabs{flex-wrap:wrap;gap:4px;padding:10px 12px 0;display:flex}.study-tab{color:var(--muted);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;align-items:center;gap:7px;padding:7px 10px;font-size:12.5px;font-weight:600;display:inline-flex}.study-tab:hover{background:var(--surface-3);color:var(--ink)}.study-tab.active{background:var(--accent-soft);color:var(--accent-dark);border-color:color-mix(in srgb, var(--accent) 30%, transparent)}.study-tab-label{display:inline}@media (max-width:560px){.study-tab-label{display:none}.study-tab{padding:7px 8px}}.review-card-front{font-size:15px;line-height:1.55}.review-reveal{border:1px solid var(--line-strong);background:var(--surface-2);color:var(--ink);cursor:pointer;border-radius:8px;margin-top:6px;padding:8px 16px;font-size:13px;font-weight:600}.review-reveal:hover{border-color:var(--accent);color:var(--accent-dark)}.review-grade{border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:9px;flex-direction:column;align-items:center;gap:2px;padding:9px 4px;font-size:12px;font-weight:700;display:flex}.review-grade.fail:hover{background:#fef2f2;border-color:#dc2626}.review-grade.hard:hover{background:#fffbeb;border-color:#d97706}.review-grade.good:hover{border-color:var(--accent)}.study-panel{flex-direction:column;height:100%;font-family:inherit;display:flex}.study-tabs{border-bottom:1px solid var(--line);gap:4px;padding:10px 10px 0;display:flex}.study-tab{color:var(--muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;border-radius:6px 6px 0 0;flex:1;justify-content:center;align-items:center;gap:6px;padding:8px 10px;font-size:13px;font-weight:600;display:inline-flex}.study-tab:hover{color:var(--ink);background:var(--surface-2)}.study-tab.active{color:var(--accent-dark);border-bottom-color:var(--accent);background:var(--accent-soft)}.study-body{flex:1;gap:10px;padding:12px;display:grid;overflow-y:auto}.study-card{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;gap:6px;padding:10px 12px;display:grid}.study-card-q{color:var(--ink);font-size:13px;font-weight:600}.study-card-a{color:var(--muted);font-size:13px;line-height:1.4;display:none}.study-card.flipped .study-card-a{display:block}.study-card-toggle{color:var(--accent-dark);cursor:pointer;text-align:left;background:0 0;border:none;padding:0;font-size:12px}.study-card-toggle:hover{text-decoration:underline}.study-generate{background:var(--accent-soft);border:1px solid #008c6533;border:1px solid lab(50.9341% -53.3139 11.651/.2);border-radius:10px;gap:8px;padding:12px;display:grid}.study-generate label{color:var(--accent-dark);font-size:12px;font-weight:600}.study-generate input[type=number],.study-generate input[type=text],.study-generate select{border:1px solid var(--line-strong);background:var(--surface);height:34px;color:var(--ink);border-radius:8px;padding:0 10px;font-family:inherit;font-size:13px}.study-generate button{background:var(--accent-dark);color:#fff;cursor:pointer;border:none;border-radius:8px;height:36px;font-size:13px;font-weight:600}.study-generate button:disabled{opacity:.6;cursor:not-allowed}.study-empty{text-align:center;color:var(--muted);padding:30px 16px;font-size:13px}.study-flashgrid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;display:grid}.study-flipcard{background:var(--surface);border:1px solid var(--line);cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:12px;align-content:start;gap:6px;min-height:120px;padding:12px;transition:transform .15s,box-shadow .15s;display:grid}.study-flipcard:hover{transform:translateY(-2px);box-shadow:0 6px 16px #00000014}.study-flipcard .side{color:var(--ink);font-size:13px;line-height:1.4}.study-flipcard .side.back{color:var(--muted);display:none}.study-flipcard.flipped .side.back{display:block}.study-flipcard .flip-hint{color:var(--faint);text-transform:uppercase;letter-spacing:.05em;font-size:10px}.tb-root{background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;gap:10px;padding:12px;display:grid}.tb-toolbar{flex-wrap:wrap;gap:6px;display:flex}.tb-btn{background:var(--surface-2);border:1px solid var(--line-strong);height:28px;color:var(--ink);cursor:pointer;border-radius:6px;align-items:center;gap:4px;padding:0 10px;font-size:12px;font-weight:600;display:inline-flex}.tb-btn:hover{background:var(--accent-soft);border-color:var(--accent)}.tb-btn.danger:hover{background:#de3b3d26;background:lab(51.5803% 63.2457 38.9399/.15);border-color:#de3b3d;border-color:lab(51.5803% 63.2457 38.9399)}.tb-grid{background:var(--line);border:1px solid var(--line);border-radius:8px;gap:2px;display:grid;overflow:auto}.tb-cell{background:var(--surface);min-width:90px;min-height:32px;color:var(--ink);border:none;outline:none;padding:4px 8px;font-family:inherit;font-size:13px}.tb-cell[contenteditable=true]:focus,.tb-cell:focus{background:var(--accent-soft);box-shadow:inset 0 0 0 1.5px var(--accent)}.tb-cell.tb-head{background:var(--surface-3);font-weight:700}.tb-rowlabel{background:var(--surface-2);color:var(--muted);place-items:center;min-width:30px;font-size:11px;font-weight:600;display:grid}.tb-colheader{background:var(--surface-2);color:var(--muted);place-items:center;height:22px;font-size:11px;font-weight:600;display:grid}.tb-preview{background:var(--surface-2);white-space:pre-wrap;color:var(--muted);border-radius:8px;max-height:160px;padding:8px;font-family:ui-monospace,monospace;font-size:11px;overflow-y:auto}.tb-caption-input{border:1px solid var(--line-strong);height:32px;color:var(--ink);background:var(--surface);border-radius:6px;padding:0 10px;font-family:inherit;font-size:13px}.tb-caption-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.comments-panel{flex-direction:column;height:100%;font-family:inherit;display:flex}.comments-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;padding:12px;display:flex}.comments-head strong{color:var(--ink);font-size:14px}.comments-body{flex:1;gap:8px;padding:10px;display:grid;overflow-y:auto}.comment{background:var(--surface-2);border:1px solid var(--line);border-radius:8px;padding:8px 10px}.comment.resolved{opacity:.55}.comment-head{color:var(--muted);align-items:center;gap:8px;margin-bottom:4px;font-size:11px;display:flex}.comment-author{color:var(--ink);font-weight:700}.comment-quote{background:var(--accent-soft);border-left:3px solid var(--accent);color:var(--accent-dark);border-radius:4px;margin:6px 0;padding:4px 8px;font-size:12px;font-style:italic}.comment-body{color:var(--ink);white-space:pre-wrap;font-size:13px;line-height:1.45}.comment-actions{gap:6px;margin-top:6px;display:flex}.comment-btn{color:var(--accent-dark);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:3px 8px;font-size:11px;font-weight:600}.comment-btn:hover{background:var(--accent-soft)}.comment-input{resize:vertical;border:1px solid var(--line-strong);width:100%;min-height:60px;color:var(--ink);background:var(--surface);border-radius:8px;padding:8px 10px;font-family:inherit;font-size:13px;line-height:1.4}.comment-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.tools-rail{border-left:1px solid var(--line);background:var(--surface);flex-direction:column;gap:0;height:100%;display:flex}.tools-rail-tabs{border-bottom:1px solid var(--line);background:var(--surface-2);flex-wrap:wrap;gap:4px;padding:10px 12px;display:flex}.tools-rail-tab{min-height:38px;color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border:1px solid #0000;border-radius:8px;flex:auto;justify-content:center;align-items:center;gap:7px;padding:0 12px;font-size:12.5px;font-weight:600;transition:all .12s;display:inline-flex}.tools-rail-tab:hover{color:var(--ink);background:var(--surface-3)}.tools-rail-tab.active{color:var(--accent-dark);background:var(--surface);border-color:var(--line-strong);box-shadow:var(--shadow-sm)}.tools-rail-tab-label{display:inline}@media (max-width:640px){.tools-rail-tab-label{display:none}.tools-rail-tab{padding:0 10px}}.tools-rail-body{flex-direction:column;flex:1;display:flex;overflow:hidden}.review-session{flex-direction:column;gap:12px;padding:14px;display:flex}.review-progress{color:var(--muted);align-items:center;gap:6px;font-size:12px;display:flex}.review-card{background:var(--surface);border:1px solid var(--line);text-align:center;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:12px;min-height:220px;padding:22px 18px;display:flex}.review-card-front{color:var(--ink);font-size:16px;font-weight:600;line-height:1.5}.review-card-back{color:var(--muted);border-top:1px dashed var(--line);width:100%;padding-top:12px;font-size:14.5px;line-height:1.6}.review-reveal{border:1px solid var(--line-strong);background:var(--surface-2);color:var(--ink);cursor:pointer;border-radius:999px;padding:9px 18px;font-size:13px;font-weight:600}.review-reveal:hover{background:var(--accent-soft);border-color:var(--accent)}.review-grade-grid{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.review-grade{border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:10px;flex-direction:column;align-items:center;gap:2px;padding:10px 8px;font-size:12.5px;font-weight:700;transition:all .12s;display:flex}.review-grade span{color:var(--muted);font-size:10px;font-weight:500}.review-grade.fail:hover{background:#ffecea;background:lab(95.0829% 9.19625 4.96008);border-color:#c53637;border-color:lab(45.9853% 56.8957 34.8481)}.review-grade.hard:hover{background:#fff0d8;background:lab(95.4362% 3.1445 15.2594);border-color:#a97500;border-color:lab(53.521% 15.8712 63.4812)}.review-grade.good:hover{background:#d9fbed;background:lab(95.894% -13.3908 3.04675);border-color:#228466;border-color:lab(49.1231% -34.637 7.70537)}.review-grade.easy:hover{border-color:var(--accent);background:var(--accent-soft)}.review-empty{color:var(--muted);text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:40px 20px;font-size:13px;display:flex}.review-empty h3{color:var(--ink);margin:0;font-size:15px}.review-btn{border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:8px 14px;font-size:12.5px;font-weight:600;display:inline-flex}.review-btn:hover{border-color:var(--accent);background:var(--accent-soft)}.review-err{color:#b32228;color:lab(40.1691% 57.0293 36.0154)}.study-explain{padding:0 0 8px}.study-card-q-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.listen-btn{border:1px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer;border-radius:7px;align-items:center;gap:5px;padding:4px 9px;font-size:11px;font-weight:600;display:inline-flex}.listen-btn:hover{border-color:var(--accent);color:var(--accent-dark)}.listen-btn.active{border-color:var(--accent);color:var(--accent-dark);background:var(--accent-soft)}.review-card-listen{align-self:flex-end;margin-bottom:2px}.lc-review-due{background:linear-gradient(135deg, color-mix(in srgb, var(--accent) 6%, var(--surface)), var(--surface));border:1px solid color-mix(in srgb, var(--accent) 22%, var(--line));box-shadow:var(--shadow-sm);border-radius:14px;align-items:flex-start;gap:16px;margin:0 0 20px;padding:16px 18px;display:flex}.lc-review-due-badge{background:var(--accent);color:#fff;width:42px;height:42px;box-shadow:0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);border-radius:11px;flex-shrink:0;place-items:center;display:grid}.lc-review-due-copy{flex:1;min-width:0}.lc-review-due-copy strong{color:var(--ink);font-size:14.5px;display:block}.lc-review-due-copy>span{color:var(--muted);font-size:12.5px}.lc-review-due-copy ul{gap:5px;margin:8px 0 0;padding:0;list-style:none;display:grid}.lc-review-due-copy li{align-items:center;gap:10px;font-size:12.5px;display:flex}.lc-review-due-copy li button{cursor:pointer;text-align:left;color:var(--accent-dark);text-overflow:ellipsis;white-space:nowrap;background:0 0;border:none;max-width:320px;padding:0;font-size:12.5px;font-weight:600;overflow:hidden}.lc-review-due-copy li button:hover{text-decoration:underline}.lc-review-due-copy li span{font-variant-numeric:tabular-nums;color:var(--muted);background:var(--surface-2);border-radius:99px;padding:1px 8px;font-size:11px}.lc-review-due-actions{flex-shrink:0;align-items:center;gap:6px;display:flex}.lc-review-due-dismiss{border:1px solid var(--line);background:var(--surface);width:30px;height:30px;color:var(--muted);cursor:pointer;border-radius:8px;place-items:center;display:grid}.lc-review-due-dismiss:hover{color:var(--ink);background:var(--surface-2)}@media (max-width:720px){.lc-review-due{flex-direction:column}.lc-review-due-actions{align-self:stretch}.lc-review-due-actions .lc-btn{flex:1;justify-content:center}}.quiz-taking{flex-direction:column;gap:12px;padding:14px;display:flex}.quiz-taking-head{color:var(--muted);justify-content:space-between;align-items:center;font-size:12px;display:flex}.quiz-progress-label{color:var(--ink);font-weight:700}.quiz-progress-track{background:var(--surface-2);border-radius:99px;height:5px;overflow:hidden}.quiz-progress-fill{background:var(--accent);height:100%;transition:width .2s}.quiz-q{flex-direction:column;gap:10px;display:flex}.quiz-q-kind{letter-spacing:.06em;text-transform:uppercase;color:var(--accent-dark);background:var(--accent-soft);border-radius:99px;align-self:flex-start;padding:3px 9px;font-size:10.5px;font-weight:700}.quiz-q-text{color:var(--ink);margin:0;font-size:14.5px;font-weight:600;line-height:1.5}.quiz-options{gap:7px;display:grid}.quiz-option{text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;border-radius:9px;padding:10px 12px;font-size:13px;line-height:1.4;transition:all .12s}.quiz-option:hover{border-color:var(--accent)}.quiz-option.active{border-color:var(--accent);background:var(--accent-soft);font-weight:600}.quiz-short-input{resize:vertical;border:1px solid var(--line-strong);width:100%;color:var(--ink);background:var(--surface);border-radius:8px;padding:10px 12px;font-family:inherit;font-size:13px}.quiz-short-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);outline:none}.quiz-nav{justify-content:space-between;gap:8px;display:flex}.quiz-results{flex-direction:column;gap:14px;padding:14px;display:flex}.quiz-score{text-align:center;background:var(--surface-2);border-radius:12px;padding:18px}.quiz-score-num{color:var(--accent-dark);letter-spacing:-.02em;font-size:38px;font-weight:800}.quiz-score-label{color:var(--muted);margin-top:2px;font-size:12.5px}.quiz-review{gap:8px;margin:0;padding:0;list-style:none;display:grid}.quiz-review-item{border:1px solid var(--line);background:var(--surface);border-radius:10px;gap:10px;padding:10px 12px;display:flex}.quiz-review-item.ok{border-color:color-mix(in srgb, var(--accent) 35%, var(--line))}.quiz-review-item.bad{background:#fef7f7;border-color:#fecaca}.quiz-review-icon{flex-shrink:0;padding-top:1px}.quiz-review-item.ok .quiz-review-icon{color:var(--accent-dark)}.quiz-review-item.bad .quiz-review-icon{color:#dc2626}.quiz-review-q{color:var(--ink);font-size:13px;font-weight:600;line-height:1.45}.quiz-review-detail{color:var(--muted);gap:3px;margin-top:6px;font-size:12px;display:grid}.quiz-review-detail em{color:var(--ink);font-style:normal;font-weight:700}.quiz-review-expl{color:var(--muted);margin-top:3px;font-size:12px}.quiz-results-actions{gap:8px;display:flex}.quiz-history{border-top:1px solid var(--line);padding-top:12px}.quiz-history h4{color:var(--ink);margin:0 0 8px;font-size:13px}.quiz-history ul{gap:6px;margin:0;padding:0;list-style:none;display:grid}.quiz-history li{background:var(--surface-2);border-radius:8px;align-items:center;gap:10px;padding:7px 10px;display:flex}.quiz-history-score{color:var(--accent-dark);font-variant-numeric:tabular-nums;font-weight:800}.quiz-history-meta{color:var(--muted);font-size:11.5px}.quiz-history-empty{color:var(--muted);margin:0;font-size:12.5px}
