@import "https://fonts.googleapis.com/css2?family=Geist:wght@300;400;500;600;700;800&family=Geist+Mono:wght@400;500&display=swap";
:root{--brand-900:#080e2e;--brand-800:#0d1642;--brand-700:#101b63;--brand-600:#1a2880;--brand-500:#2d3db5;--brand-400:#4a5fd4;--brand-300:#7b8ef0;--brand-200:#b8c2f8;--brand-100:#e8eafd;--brand-50:#f4f5fe;--violet:#6d5dfc;--violet-dim:#8b7afd;--sky:#38bdf8;--sky-dim:#7dd3fc;--emerald:#10b981;--amber:#f59e0b;--rose:#f43f5e;--success:#059669;--danger:#dc2626;--warning:#d97706;--bg:#f7f8fc;--bg-alt:#eef0f7;--surface:#fff;--surface-2:#f9fafd;--surface-3:#f3f5fb;--surface-glass:#ffffffbf;--border:#d2d7ebe6;--border-strong:#bec6e1;--border-focus:var(--violet);--ink:#0c0e1a;--ink-2:#1e2338;--ink-3:#374161;--muted:#6b738f;--subtle:#9aa1b8;--faint:#c4c9db;--r-xs:6px;--r-sm:10px;--r-md:14px;--r-lg:18px;--r-xl:24px;--r-2xl:32px;--r-full:999px;--shadow-xs:0 1px 3px #0c0e1a0d, 0 1px 2px #0c0e1a0f;--shadow-sm:0 2px 8px #0c0e1a0f, 0 1px 3px #0c0e1a0d;--shadow-md:0 8px 24px #0c0e1a14, 0 2px 6px #0c0e1a0d;--shadow-lg:0 20px 48px #0c0e1a1a, 0 4px 12px #0c0e1a0f;--shadow-xl:0 36px 80px #0c0e1a21, 0 8px 20px #0c0e1a12;--shadow-brand:0 8px 32px #6d5dfc38, 0 2px 8px #6d5dfc1f;--shadow-brand-lg:0 16px 48px #6d5dfc47, 0 4px 12px #6d5dfc29;--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:20px;--sp-6:24px;--sp-8:32px;--sp-10:40px;--sp-12:48px;--sp-16:64px;--sidebar-w:290px;--ease-out:cubic-bezier(.16, 1, .3, 1);--ease-in-out:cubic-bezier(.4, 0, .2, 1);--t-fast:.12s;--t-base:.2s;--t-slow:.35s}@media (prefers-color-scheme:dark){:root{--bg:#0a0c18;--bg-alt:#0e1020;--surface:#111326;--surface-2:#161829;--surface-3:#1c1f33;--surface-glass:#111326d9;--border:#ffffff14;--border-strong:#ffffff21;--ink:#f0f1f8;--ink-2:#d4d7eb;--ink-3:#9ca3c0;--muted:#7880a0;--subtle:#545c7e;--faint:#2e3352;--shadow-xs:0 1px 3px #0000004d;--shadow-sm:0 2px 8px #00000047;--shadow-md:0 8px 24px #00000059;--shadow-lg:0 20px 48px #0000006b;--shadow-xl:0 36px 80px #00000080}}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;min-height:100%;font-family:Geist,-apple-system,BlinkMacSystemFont,Inter,ui-sans-serif,system-ui,sans-serif}body{background:var(--bg);min-height:100%;color:var(--ink);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:15px;line-height:1.6}button,input,textarea,select{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:none}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.app-shell{grid-template-columns:var(--sidebar-w) minmax(0, 1fr);min-height:100vh;display:grid}.sidebar{height:100vh;width:var(--sidebar-w);background:var(--surface);border-right:1px solid var(--border);z-index:10;flex-direction:column;display:flex;position:sticky;top:0;overflow:hidden auto}.sidebar::-webkit-scrollbar{width:3px}.sidebar::-webkit-scrollbar-track{background:0 0}.sidebar::-webkit-scrollbar-thumb{background:var(--faint);border-radius:999px}.sidebar-header{border-bottom:1px solid var(--border);flex-shrink:0;padding:20px 18px 12px;position:relative}.brand{cursor:pointer;border-radius:var(--r-md);transition:background var(--t-fast) var(--ease-out);align-items:center;gap:10px;padding:4px 6px;display:flex}.brand:hover{background:var(--surface-3)}.brand img{object-fit:contain;width:148px!important;height:auto!important}.mobile-brand .brand img{width:120px!important}.mobile-brand .brand{padding:0;background:0 0!important}.brand-tagline{color:var(--subtle);letter-spacing:.01em;margin-top:2px;padding-left:6px;font-size:11px;font-weight:500}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:12px 12px 0;display:flex}.nav-label{letter-spacing:.1em;text-transform:uppercase;color:var(--subtle);padding:10px 8px 4px;font-size:10px;font-weight:700}.nav-item{border-radius:var(--r-md);width:100%;color:var(--ink-3);text-align:left;transition:background var(--t-fast) var(--ease-out), color var(--t-fast) var(--ease-out), transform var(--t-fast) var(--ease-out);align-items:center;gap:10px;padding:9px 10px;font-size:14px;font-weight:500;display:flex;position:relative}.nav-item .nav-icon{opacity:.65;width:18px;height:18px;transition:opacity var(--t-fast);flex-shrink:0;justify-content:center;align-items:center;font-size:15px;display:flex}.nav-item:hover{background:var(--surface-3);color:var(--ink);transform:translate(1px)}.nav-item:hover .nav-icon{opacity:1}.nav-item.active{background:var(--brand-100);color:var(--brand-700);font-weight:600}.nav-item.active .nav-icon{opacity:1}@media (prefers-color-scheme:dark){.nav-item.active{color:var(--brand-300);background:#6d5dfc26}}.nav-item.active:before{content:"";background:var(--violet);border-radius:0 3px 3px 0;width:3px;position:absolute;top:6px;bottom:6px;left:0}.sidebar-folders-section{border-top:1px solid var(--border);flex-direction:column;flex:1 1 0;min-height:0;margin-top:auto;padding:12px;display:flex;overflow:hidden}.sidebar-folders-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.sidebar-folders-header span{letter-spacing:.1em;text-transform:uppercase;color:var(--subtle);font-size:10px;font-weight:700}.folder-new-btn{border-radius:var(--r-sm);color:var(--violet);background:var(--brand-50);border:1px solid var(--brand-100);transition:all var(--t-fast);align-items:center;gap:4px;padding:4px 8px;font-size:12px;font-weight:600;display:flex}.folder-new-btn:hover{background:var(--brand-100)}@media (prefers-color-scheme:dark){.folder-new-btn{background:#6d5dfc1a;border-color:#6d5dfc33}.folder-new-btn:hover{background:#6d5dfc33}}.sidebar-folder-list{flex-direction:column;flex:1 1 0;gap:2px;min-height:0;padding-right:2px;display:flex;overflow-y:auto}.sidebar-folder-list::-webkit-scrollbar{width:3px}.sidebar-folder-list::-webkit-scrollbar-track{background:0 0}.sidebar-folder-list::-webkit-scrollbar-thumb{background:var(--faint);border-radius:999px}.folder-row{border-radius:var(--r-md);transition:background var(--t-fast);align-items:center;gap:6px;padding:6px 8px;display:flex}.folder-row:hover{background:var(--surface-3)}.folder-row-btn{min-width:0;color:var(--ink-3);text-align:left;white-space:nowrap;text-overflow:ellipsis;flex:1;align-items:center;gap:8px;padding:0;font-size:13px;font-weight:500;display:flex;overflow:hidden}.folder-dot{background:linear-gradient(135deg, var(--violet), var(--sky));border-radius:50%;flex-shrink:0;width:8px;height:8px}.folder-delete-btn{border-radius:var(--r-sm);width:22px;height:22px;color:var(--subtle);opacity:0;transition:all var(--t-fast);justify-content:center;align-items:center;font-size:14px;display:flex}.folder-row:hover .folder-delete-btn{opacity:1}.folder-delete-btn:hover{color:var(--danger);background:#dc26261a}.sidebar-empty{color:var(--subtle);padding:4px 8px;font-size:12px;font-style:italic}.main{flex-direction:column;min-width:0;min-height:100vh;display:flex}.topbar-hamburger{display:none}.topbar{z-index:8;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-bottom:1px solid var(--border);background:#f7f8fcd9;justify-content:flex-end;align-items:center;gap:12px;height:60px;padding:0 32px;display:flex;position:sticky;top:0}@media (prefers-color-scheme:dark){.topbar{background:#0a0c18d9}}.topbar-nav-link{color:var(--muted);border-radius:var(--r-md);transition:color var(--t-fast), background var(--t-fast);padding:6px 10px;font-size:14px;font-weight:500}.topbar-nav-link:hover{color:var(--ink);background:var(--surface-3)}.mobile-brand{display:none}.btn-primary{border-radius:var(--r-md);background:linear-gradient(135deg, var(--brand-700), var(--violet));color:#fff;letter-spacing:-.01em;box-shadow:var(--shadow-brand);transition:transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), opacity var(--t-fast);white-space:nowrap;justify-content:center;align-items:center;gap:7px;padding:9px 18px;font-size:14px;font-weight:600;display:inline-flex}.btn-primary:hover{box-shadow:var(--shadow-brand-lg);transform:translateY(-1px)}.btn-primary:active{transform:translateY(0)}.btn-primary:disabled{opacity:.6;cursor:not-allowed;box-shadow:var(--shadow-brand);transform:none}.primary{border-radius:var(--r-md);background:linear-gradient(135deg, var(--brand-700), var(--violet));color:#fff;letter-spacing:-.01em;box-shadow:var(--shadow-brand);transition:transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), opacity var(--t-fast);justify-content:center;align-items:center;gap:7px;padding:9px 18px;font-size:14px;font-weight:600;display:inline-flex}.primary:hover{box-shadow:var(--shadow-brand-lg);transform:translateY(-1px)}.primary:active{transform:translateY(0)}.primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.signup{border-radius:var(--r-md);background:linear-gradient(135deg, var(--brand-700), var(--violet));color:#fff;box-shadow:var(--shadow-brand);transition:transform var(--t-base) var(--ease-out), box-shadow var(--t-base);justify-content:center;align-items:center;gap:7px;padding:8px 16px;font-size:13px;font-weight:600;display:inline-flex}.signup:hover{box-shadow:var(--shadow-brand-lg);transform:translateY(-1px)}.secondary{border-radius:var(--r-md);background:var(--surface);border:1px solid var(--border-strong);color:var(--ink-3);transition:all var(--t-fast) var(--ease-out);box-shadow:var(--shadow-xs);justify-content:center;align-items:center;gap:6px;padding:7px 13px;font-size:13px;font-weight:500;display:inline-flex}.secondary:hover{background:var(--surface-2);border-color:var(--border-focus);color:var(--ink);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.ghost{border-radius:var(--r-md);border:1px dashed var(--border-strong);width:100%;color:var(--muted);transition:all var(--t-fast);background:0 0;justify-content:center;align-items:center;gap:6px;padding:9px 12px;font-size:13px;font-weight:500;display:inline-flex}.ghost:hover{background:var(--surface-3);border-color:var(--violet);color:var(--violet)}.content{width:min(1140px,100%);margin:0 auto;padding:48px 40px 40px}.hero{text-align:center;max-width:760px;margin:0 auto 36px}.hero-badge{border-radius:var(--r-full);background:var(--surface);border:1px solid var(--border);color:var(--ink-3);box-shadow:var(--shadow-xs);letter-spacing:.02em;align-items:center;gap:6px;margin-bottom:18px;padding:5px 12px;font-size:12px;font-weight:600;display:inline-flex}.hero-badge-dot{background:var(--emerald);width:6px;height:6px;box-shadow:0 0 6px var(--emerald);border-radius:50%;animation:2s ease-in-out infinite pulse-dot}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.4}}.hero-eyebrow{border-radius:var(--r-full);background:var(--surface);border:1px solid var(--border);color:var(--ink-3);box-shadow:var(--shadow-xs);letter-spacing:.02em;align-items:center;gap:6px;margin-bottom:18px;padding:5px 12px;font-size:12px;font-weight:600;display:inline-flex}.hero h1{letter-spacing:-.04em;color:var(--ink);margin-bottom:14px;font-size:clamp(36px,5.5vw,58px);font-weight:800;line-height:1.05}.hero h1 span{background:linear-gradient(135deg, var(--brand-600), var(--violet), var(--sky));color:#0000;-webkit-background-clip:text;background-clip:text}.hero p,.hero .muted{color:var(--muted);max-width:580px;margin:0 auto;font-size:17px;line-height:1.65}.search-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);max-width:860px;box-shadow:var(--shadow-lg);transition:box-shadow var(--t-slow) var(--ease-out), border-color var(--t-base);margin:0 auto 40px;overflow:hidden}.search-card:focus-within{box-shadow:var(--shadow-xl), 0 0 0 4px #6d5dfc0f;border-color:#6d5dfc66}.search-card textarea{resize:none;width:100%;min-height:130px;color:var(--ink);background:0 0;border:none;outline:none;padding:22px 24px 12px;font-family:inherit;font-size:16px;line-height:1.6}.search-card textarea::placeholder{color:var(--subtle)}.controls{border-top:1px solid var(--border);background:var(--surface-2);flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:14px;padding:14px 16px;display:flex}.toggle{background:var(--surface-3);border-radius:var(--r-md);border:1px solid var(--border);gap:3px;padding:3px;display:flex}.toggle button{border-radius:calc(var(--r-md) - 2px);color:var(--muted);text-align:left;min-width:150px;transition:all var(--t-base) var(--ease-out);padding:8px 14px;font-size:13px;font-weight:500}.toggle button small{color:var(--subtle);transition:color var(--t-base);margin-top:2px;font-size:11px;font-weight:400;display:block}.toggle button.on{background:var(--surface);color:var(--ink);box-shadow:var(--shadow-sm)}.toggle button.on small{color:var(--muted)}.date-row{flex-wrap:wrap;align-items:flex-end;gap:10px;display:flex}.date-row label{color:var(--muted);letter-spacing:.03em;text-transform:uppercase;gap:4px;font-size:11px;font-weight:600;display:grid}input,select,textarea{border:1px solid var(--border-strong);background:var(--surface);border-radius:var(--r-md);width:100%;color:var(--ink);transition:border-color var(--t-fast), box-shadow var(--t-fast);outline:none;padding:9px 12px;font-family:inherit;font-size:14px}input:focus,select:focus,textarea:focus{border-color:var(--violet);box-shadow:0 0 0 3px #6d5dfc1f}.date-row input,.date-row select{min-width:120px}.cta-intro{text-align:center;letter-spacing:.1em;text-transform:uppercase;color:var(--subtle);margin:0 0 16px;font-size:11px;font-weight:700}.cta-grid{grid-template-columns:repeat(3,1fr);gap:14px;max-width:860px;margin:0 auto 32px;display:grid}.cta{border:1px solid var(--border);background:var(--surface);border-radius:var(--r-xl);text-align:left;box-shadow:var(--shadow-sm);transition:transform var(--t-base) var(--ease-out), box-shadow var(--t-base) var(--ease-out), border-color var(--t-base);cursor:pointer;padding:20px;position:relative;overflow:hidden}.cta-icon{border-radius:var(--r-md);background:linear-gradient(135deg, var(--brand-50), #6d5dfc14);border:1px solid var(--brand-100);justify-content:center;align-items:center;width:38px;height:38px;margin-bottom:14px;font-size:18px;display:flex}@media (prefers-color-scheme:dark){.cta-icon{background:#6d5dfc1f;border-color:#6d5dfc33}}.cta:before{content:"";pointer-events:none;background:radial-gradient(circle,#6d5dfc0f 0%,#0000 70%);border-radius:50%;width:80px;height:80px;position:absolute;top:0;right:0;transform:translate(20px,-20px)}.cta:hover{box-shadow:var(--shadow-md);border-color:#6d5dfc4d;transform:translateY(-2px)}.cta strong{color:var(--ink);letter-spacing:-.02em;margin-bottom:6px;font-size:15px;font-weight:700;line-height:1.3;display:block}.cta span{color:var(--muted);font-size:13px;line-height:1.55;display:block}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-xl);box-shadow:var(--shadow-md);margin:20px 0;padding:28px}.panel h2{letter-spacing:-.025em;color:var(--ink);margin-bottom:4px;font-size:20px;font-weight:700}.panel.error{color:var(--danger);background:#fef2f2cc;border-color:#dc26264d}@media (prefers-color-scheme:dark){.panel.error{background:#dc262614}}.result-head{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px;padding-bottom:16px;display:flex}.result-head-meta p{color:var(--muted);margin-top:2px;font-size:13px}.actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.actions button{border-radius:var(--r-md);background:var(--surface-2);border:1px solid var(--border);color:var(--ink-3);transition:all var(--t-fast);box-shadow:var(--shadow-xs);align-items:center;gap:5px;padding:7px 13px;font-size:13px;font-weight:500;display:inline-flex}.actions button:hover{background:var(--surface);border-color:var(--border-strong);color:var(--ink);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.review{white-space:pre-wrap;color:var(--ink-2);overflow-wrap:break-word;font-family:inherit;font-size:15px;line-height:1.8}.paper-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.paper{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--surface-2);transition:all var(--t-base) var(--ease-out);padding:16px 18px;position:relative}.paper:hover{background:var(--surface);box-shadow:var(--shadow-sm);border-color:#6d5dfc59;transform:translateY(-1px)}.paper-rank{border-radius:var(--r-sm);background:linear-gradient(135deg, var(--brand-700), var(--violet));color:#fff;flex-shrink:0;justify-content:center;align-items:center;width:22px;height:22px;font-size:11px;font-weight:700;display:inline-flex}.paper-title-row{align-items:flex-start;gap:10px;margin-bottom:8px;display:flex}.paper-title{color:var(--ink);flex:1;font-size:14px;font-weight:600;line-height:1.4}.paper-meta{flex-wrap:wrap;gap:4px 10px;margin-bottom:10px;display:flex}.paper-meta-item{color:var(--muted);align-items:center;gap:4px;font-size:12px;display:inline-flex}.paper-badge{border-radius:var(--r-full);align-items:center;padding:2px 7px;font-size:11px;font-weight:600;display:inline-flex}.paper-badge.oa{color:var(--success);background:#0596691a;border:1px solid #05966933}.paper-badge.q1{color:var(--emerald);background:#10b9811a;border:1px solid #10b98133}.paper-badge.q2{color:#0284c7;background:#38bdf81a;border:1px solid #38bdf840}.paper-badge.q3{color:var(--amber);background:#f59e0b1a;border:1px solid #f59e0b33}.paper-badge.q4{color:var(--rose);background:#f43f5e1a;border:1px solid #f43f5e33}.paper-actions{flex-wrap:wrap;gap:7px;margin-top:10px;display:flex}.more{width:100%;margin-top:16px}.stars{border-top:1px solid var(--border);align-items:center;gap:4px;margin-top:20px;padding-top:16px;display:flex}.stars button{color:var(--faint);transition:color var(--t-fast), transform var(--t-fast);padding:0 2px;font-size:20px}.stars button:hover{color:var(--amber);transform:scale(1.15)}.stars button.selected{color:var(--amber)}.stars span{color:var(--muted);margin-left:8px;font-size:12px}.orbit-loader{border:1px solid var(--border);background:var(--surface);border-radius:var(--r-xl);text-align:center;max-width:560px;box-shadow:var(--shadow-lg);margin:32px auto;padding:36px 32px 28px}.orbit-loader strong{color:var(--ink);letter-spacing:-.02em;min-height:24px;margin-top:16px;font-size:15px;font-weight:700;transition:opacity .3s;display:block}.orbit-loader p{color:var(--muted);max-width:360px;margin:6px auto 0;font-size:13px;line-height:1.6}.doc-loader-scene{flex-direction:column;align-items:center;gap:14px;display:flex}.doc-loader-scene svg{filter:drop-shadow(0 4px 16px #7c3aed2e)}@keyframes scanline-pulse{0%,to{opacity:.25;transform:scaleX(1)}50%{opacity:1;transform:scaleX(1.04)}}.scan-line{transform-origin:0}.sl1{animation:1.8s ease-in-out infinite scanline-pulse}.sl2{animation:1.8s ease-in-out .2s infinite scanline-pulse}.sl3{animation:1.8s ease-in-out .4s infinite scanline-pulse}.sl4{animation:1.8s ease-in-out .6s infinite scanline-pulse}.sl5{animation:1.8s ease-in-out .8s infinite scanline-pulse}@keyframes beam-sweep{0%{opacity:.55;transform:translateY(0)}80%{opacity:.55;transform:translateY(66px)}to{opacity:0;transform:translateY(66px)}}.scan-beam{animation:2.2s ease-in-out infinite beam-sweep}.doc-loader-dots{gap:6px;display:flex}.doc-loader-dots span{background:var(--violet);border-radius:50%;width:7px;height:7px;animation:1.2s 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