:root{--bg: #0b1120;--panel: #111827;--panel-2: #1e293b;--border: #26324a;--text: #e2e8f0;--muted: #94a3b8;--accent: #6366f1;--accent-2: #10b981}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px}.app{max-width:1180px;margin:0 auto;padding:20px;min-height:100vh;display:flex;flex-direction:column}.content{flex:1;min-height:0}.topbar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-bottom:16px;border-bottom:1px solid var(--border);margin-bottom:18px}.topbar-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:10px}.brand-aside{line-height:0;text-decoration:none;flex-shrink:0}.brand-aside-img{display:block;width:72px;height:auto}.brand{display:flex;align-items:center;gap:14px}.yarn-ball-img{display:block;width:100%;height:100%;object-fit:cover;border-radius:inherit}.logo{font-size:34px;overflow:hidden}.brand h1{margin:0;font-size:22px}.subtitle{margin:2px 0 0;color:var(--muted);font-size:13px}.stats{display:flex;gap:14px;color:var(--muted);font-size:12px;flex-wrap:wrap}.stats .backend{color:var(--accent-2)}.section-nav{display:flex;gap:6px;margin-bottom:16px}.section-nav button{flex:1;background:transparent;border:1px solid var(--border);color:var(--muted);padding:9px 16px;border-radius:8px;cursor:pointer;font-size:14px;white-space:nowrap}.section-nav button:hover{color:var(--text);border-color:#475569}.section-nav button.active{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:600}.searchbar{display:flex;gap:10px;margin-bottom:14px}.searchbar input{flex:1;padding:14px 16px;border-radius:10px;border:1px solid var(--border);background:var(--panel);color:var(--text);font-size:15px;outline:none}.searchbar input:focus{border-color:var(--accent)}.searchbar button{padding:0 26px;border:none;border-radius:10px;cursor:pointer;background:var(--accent);color:#fff;font-size:15px;font-weight:600}.searchbar button:disabled{opacity:.6;cursor:default}.examples{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:20px}.example-chip{background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:20px;cursor:pointer;font-size:12.5px}.example-chip:hover{border-color:var(--accent)}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;margin-bottom:16px}.card h2{margin:0 0 12px;font-size:15px;display:flex;align-items:center;gap:8px}.card-head{display:flex;justify-content:space-between;align-items:center}.count{background:var(--panel-2);color:var(--muted);border-radius:10px;padding:1px 8px;font-size:12px;font-weight:400}.summary-text{white-space:pre-wrap;font-family:inherit;margin:0;line-height:1.55;color:#f1f5f9}.src-tag{font-size:10.5px;font-weight:400;text-transform:none;letter-spacing:0;padding:2px 8px;border-radius:10px;background:var(--panel-2);color:var(--muted)}.src-tag.src-llm{background:#064e3b;color:#6ee7b7}.summary-loading{display:flex;align-items:center;gap:8px;font-size:12.5px;color:#93c5fd;margin-bottom:10px}.spinner{width:13px;height:13px;border:2px solid #1e3a5f;border-top-color:#60a5fa;border-radius:50%;display:inline-block;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.gaps-card{border-color:#7c2d12}.gaps{margin:0;padding-left:18px;color:#fdba74;line-height:1.6}.doc-list{display:flex;flex-direction:column;gap:10px}.doc-item{background:var(--panel-2);border:1px solid var(--border);border-radius:9px;padding:12px 14px;cursor:pointer;transition:border-color .15s}.doc-item:hover{border-color:var(--accent)}.doc-item.slim{padding:9px 12px}.doc-title{font-weight:600;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.snippet{margin:6px 0 0;color:var(--muted);font-size:12.5px;line-height:1.5}.score{margin-left:auto;color:var(--accent-2);font-size:12px;font-weight:400}.badge{font-size:10.5px;text-transform:uppercase;letter-spacing:.3px;padding:2px 7px;border-radius:5px;background:#334155;color:#cbd5e1}.badge-article{background:#3730a3;color:#c7d2fe}.badge-report{background:#065f46;color:#a7f3d0}.badge-experiment{background:#92400e;color:#fde68a}.badge-dataset{background:#155e75;color:#a5f3fc}.exp-list{display:flex;flex-direction:column;gap:10px}.exp-item{background:var(--panel-2);border:1px solid var(--border);border-radius:9px;padding:12px 14px}.exp-name{font-weight:600;margin-bottom:8px}.exp-meta{display:flex;flex-direction:column;gap:5px;font-size:12.5px;color:var(--muted)}.exp-meta b{color:var(--text);font-weight:600}.chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.chips.inline{display:inline-flex;margin-top:0}.chip{background:#1e3a5f;color:#bfdbfe;border-radius:14px;padding:3px 10px;font-size:12px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}.graph-wrap{position:relative}.graph-canvas{height:680px;background:#0a0f1c;border:1px solid var(--border);border-radius:12px}.graph-toolbar{position:absolute;top:10px;left:10px;z-index:6;display:flex;align-items:center;gap:8px}.graph-toolbar button{background:#111827eb;border:1px solid var(--border);color:var(--text);padding:6px 12px;border-radius:7px;cursor:pointer;font-size:12px}.graph-toolbar button:hover{border-color:var(--accent)}.graph-hint{background:#111827d9;border:1px solid var(--border);color:var(--muted);padding:5px 10px;border-radius:7px;font-size:11px}.graph-legend{position:absolute;top:10px;right:10px;z-index:6;background:#111827eb;border:1px solid var(--border);border-radius:8px;padding:8px;display:flex;flex-direction:column;gap:3px;font-size:11.5px}.legend-item{display:flex;align-items:center;gap:7px;background:none;border:none;color:var(--text);cursor:pointer;padding:3px 6px;border-radius:5px;text-align:left;width:100%}.legend-item:hover{background:var(--panel-2)}.legend-item.off{opacity:.4;text-decoration:line-through}.legend-dot{width:11px;height:11px;border-radius:50%;display:inline-block;flex-shrink:0}.graph-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;gap:10px;color:var(--muted);font-size:14px;pointer-events:none}.graph-toolbar button.active{border-color:var(--accent);background:#6366f140}.graph-zoom{position:absolute;bottom:16px;right:16px;z-index:6;display:flex;flex-direction:column;gap:4px;background:#111827eb;border:1px solid var(--border);border-radius:8px;padding:4px}.graph-zoom button{width:36px;height:36px;background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:6px;cursor:pointer;font-size:20px;line-height:1}.graph-zoom button:hover{border-color:var(--accent)}.upload-panel{max-width:720px}.upload-desc{margin:0 0 16px;line-height:1.5}.upload-drop{border:2px dashed var(--border);border-radius:12px;padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s;background:var(--panel-2)}.upload-drop.over,.upload-drop:hover{border-color:var(--accent);background:#6366f114}.upload-drop.loading{cursor:default;opacity:.85}.upload-icon{font-size:42px;margin-bottom:10px}.upload-title{font-size:16px;font-weight:600;margin-bottom:6px}.upload-formats{color:var(--muted);font-size:12px}.upload-status{display:flex;align-items:center;justify-content:center;gap:10px;color:#93c5fd}.upload-error{margin-top:14px}.upload-success{margin-top:16px;padding:14px;border-radius:9px;background:#10b9811f;border:1px solid rgba(16,185,129,.35)}.chat-panel{display:flex;flex-direction:column;min-height:620px}.chat-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;padding:14px 18px}.chat-head h2{margin:0}.chat-sub{margin:4px 0 0;font-size:12.5px}.chat-clear{background:var(--panel-2);border:1px solid var(--border);color:var(--muted);padding:8px 14px;border-radius:8px;cursor:pointer;font-size:13px}.chat-clear:hover{border-color:var(--accent);color:var(--text)}.chat-messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:14px;padding:8px 4px 16px;max-height:520px}.chat-msg{display:flex;gap:10px;align-items:flex-start}.chat-msg-user{flex-direction:row-reverse}.chat-avatar{font-size:22px;flex-shrink:0;margin-top:4px;width:28px;height:28px;border-radius:50%;overflow:hidden}.chat-bubble{max-width:min(720px,85%);background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px 14px;position:relative}.chat-msg-user .chat-bubble{background:#6366f12e;border-color:#6366f159}.chat-text{white-space:pre-wrap;font-family:inherit;margin:0;line-height:1.55;font-size:14px}.chat-sources{margin-top:10px;display:flex;flex-wrap:wrap;gap:6px;align-items:center}.chat-source{background:var(--panel-2);border:1px solid var(--border);color:#bfdbfe;padding:4px 10px;border-radius:14px;cursor:pointer;font-size:12px}.chat-source:hover{border-color:var(--accent)}.chat-typing{display:flex;align-items:center;gap:8px;color:var(--muted)}.chat-error{margin:8px 0}.chat-inputbar{display:flex;gap:10px;margin-top:12px;padding-top:12px;border-top:1px solid var(--border)}.chat-inputbar input{flex:1;padding:14px 16px;border-radius:10px;border:1px solid var(--border);background:var(--panel);color:var(--text);font-size:14px}.chat-inputbar input:focus{outline:none;border-color:var(--accent)}.chat-inputbar button{padding:0 22px;border:none;border-radius:10px;cursor:pointer;background:var(--accent);color:#fff;font-weight:600}.chat-inputbar button:disabled{opacity:.55;cursor:default}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.modal{background:var(--panel);border:1px solid var(--border);border-radius:12px;max-width:760px;width:100%;max-height:82vh;overflow-y:auto;padding:24px;position:relative}.modal-close{position:absolute;top:12px;right:14px;background:none;border:none;color:var(--muted);font-size:26px;cursor:pointer;line-height:1}.modal-meta{display:flex;align-items:center;gap:10px;margin:6px 0 10px}.doc-full{white-space:pre-wrap;font-family:inherit;background:var(--panel-2);padding:14px;border-radius:8px;line-height:1.55;margin-top:12px;font-size:13px}.muted{color:var(--muted)}.error{background:#7f1d1d;border:1px solid #b91c1c;color:#fecaca;padding:12px 16px;border-radius:8px;margin-bottom:14px}@media (max-width: 720px){.grid-2{grid-template-columns:1fr}.brand-aside-img{width:56px}.section-nav{gap:4px}.section-nav button{font-size:12px;padding:9px 8px}}.auth-wrapper{display:flex;justify-content:center;align-items:center;min-height:100vh;background:var(--bg);padding:20px}.auth-card{background:var(--panel);border:1px solid var(--border);border-radius:16px;width:100%;max-width:440px;padding:32px;box-shadow:0 10px 25px -5px #0000004d,0 8px 10px -6px #0000004d}.auth-header{text-align:center;margin-bottom:24px}.auth-logo{font-size:48px;display:block;margin-bottom:12px;width:64px;height:64px;margin-inline:auto;border-radius:18px;overflow:hidden;box-shadow:0 12px 32px #7c3aed47}.auth-card h2{margin:0;font-size:24px;color:var(--text);font-weight:700}.auth-subtitle{margin:6px 0 0;color:var(--muted);font-size:14px}.auth-form{display:flex;flex-direction:column;gap:18px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{color:var(--text);font-size:13px;font-weight:500;text-align:left}.form-group input{padding:12px 14px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--text);font-size:14px;outline:none;transition:border-color .15s}.form-group input:focus{border-color:var(--accent)}.auth-submit-btn{padding:12px;border:none;border-radius:8px;cursor:pointer;background:var(--accent);color:#fff;font-size:15px;font-weight:600;transition:opacity .15s;margin-top:6px}.auth-submit-btn:hover{opacity:.9}.auth-submit-btn:disabled{opacity:.6;cursor:default}.auth-footer{display:flex;flex-direction:column;align-items:center;gap:12px;margin-top:20px}.auth-link-btn{background:none;border:none;color:var(--muted);font-size:13px;cursor:pointer;padding:4px;transition:color .15s}.auth-link-btn:hover{color:var(--text)}.auth-divider{display:flex;align-items:center;width:100%;color:var(--muted);font-size:12px}.auth-divider:before,.auth-divider:after{content:"";flex:1;border-bottom:1px solid var(--border)}.auth-divider:before{margin-right:10px}.auth-divider:after{margin-left:10px}.auth-guest-btn{background:transparent;border:1px solid var(--border);color:var(--muted);padding:10px 16px;border-radius:8px;cursor:pointer;font-size:13px;width:100%;transition:border-color .15s,color .15s}.auth-guest-btn:hover{border-color:var(--accent);color:var(--text)}.topbar-right{display:flex;align-items:center;gap:16px}.user-badge-container{display:flex;align-items:center}.user-badge{display:flex;align-items:center;gap:8px;background:var(--panel-2);border:1px solid var(--border);padding:6px 12px;border-radius:20px;font-size:12.5px;color:var(--text)}.logout-btn{background:none;border:none;color:#ef4444;cursor:pointer;padding:0;font-size:12.5px;font-weight:500;text-decoration:underline;margin-left:6px;transition:color .15s}.logout-btn:hover{color:#f87171}@media (max-width: 720px){.topbar-right{flex-direction:column;align-items:flex-end;gap:8px}}:root{--bg: #070b16;--bg-soft: #0b1224;--panel: rgba(15, 23, 42, .86);--panel-2: rgba(30, 41, 59, .78);--panel-3: rgba(51, 65, 85, .58);--border: rgba(148, 163, 184, .2);--text: #f8fafc;--muted: #a9b7cc;--accent: #7c3aed;--accent-2: #14b8a6;--accent-3: #f59e0b;--danger: #ef4444;--shadow: 0 24px 70px rgba(0, 0, 0, .34);--radius-lg: 28px;--radius-md: 18px;--radius-sm: 12px}body{min-height:100vh;background:radial-gradient(circle at 12% 0%,rgba(124,58,237,.28),transparent 34rem),radial-gradient(circle at 88% 8%,rgba(20,184,166,.2),transparent 30rem),linear-gradient(135deg,#060914,#0b1224 52%,#111827);letter-spacing:-.01em}button,input{font:inherit}button{transition:transform .18s ease,border-color .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease}button:focus-visible,input:focus-visible{outline:3px solid rgba(20,184,166,.26);outline-offset:2px}.app{max-width:1280px;padding:24px}.topbar{position:sticky;top:0;z-index:20;padding:14px 0 18px;margin-bottom:16px;border-bottom:1px solid rgba(148,163,184,.14);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.brand{gap:12px}.logo{display:grid;place-items:center;width:46px;height:46px;border:1px solid rgba(255,255,255,.16);border-radius:15px;background:linear-gradient(135deg,#7c3aede6,#14b8a6bd);box-shadow:0 12px 32px #7c3aed47;font-size:24px;overflow:hidden}.brand h1{font-size:22px;letter-spacing:-.04em}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:#99f6e4;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.topbar-right{gap:14px}.brand-aside{padding:6px;border:1px solid var(--border);border-radius:16px;background:#0f172a9e}.brand-aside-img{width:58px;border-radius:10px}.user-badge{border-color:#94a3b82e;background:#0f172ab8;box-shadow:0 10px 30px #0000002e}.logout-btn{color:#fca5a5;text-decoration:none}.hero{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(360px,.97fr);gap:22px;align-items:stretch;margin-bottom:18px}.hero-copy,.hero-panel,.card,.metric-card{border:1px solid var(--border);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.hero-copy{position:relative;overflow:hidden;min-height:356px;padding:clamp(28px,4vw,46px);border-radius:var(--radius-lg);background:linear-gradient(140deg,#0f172ae6,#0f172a8f),radial-gradient(circle at 85% 18%,rgba(20,184,166,.34),transparent 18rem)}.hero-copy:after{content:"";position:absolute;right:-70px;bottom:-90px;width:250px;height:250px;border:1px solid rgba(255,255,255,.12);border-radius:50%;background:radial-gradient(circle,rgba(124,58,237,.32),transparent 64%)}.hero-copy h2{position:relative;z-index:1;max-width:760px;margin:14px 0 16px;font-size:clamp(34px,5vw,58px);line-height:.96;letter-spacing:-.07em}.hero-copy p{position:relative;z-index:1;max-width:640px;margin:0;color:#cbd5e1;font-size:17px;line-height:1.65}.hero-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.hero-actions span{padding:9px 13px;border:1px solid rgba(255,255,255,.12);border-radius:999px;background:#ffffff12;color:#e2e8f0;font-size:12.5px;font-weight:700}.hero-panel{display:flex;flex-direction:column;justify-content:center;padding:clamp(22px,3vw,32px);border-radius:var(--radius-lg);background:linear-gradient(160deg,#111827eb,#0f172ac2),radial-gradient(circle at 20% 0%,rgba(245,158,11,.16),transparent 20rem)}.hero-panel label{margin-bottom:12px;color:var(--text);font-size:18px;font-weight:800;letter-spacing:-.03em}.searchbar{align-items:stretch;gap:10px;margin-bottom:16px}.searchbar input,.chat-inputbar input,.form-group input{border-color:#94a3b838;background:#02061794;box-shadow:inset 0 1px #ffffff0a}.searchbar input{min-height:58px;border-radius:17px;font-size:15px}.searchbar input:focus,.chat-inputbar input:focus,.form-group input:focus{border-color:#14b8a6cc;box-shadow:0 0 0 4px #14b8a61f}.searchbar button,.chat-inputbar button,.auth-submit-btn{min-height:48px;border-radius:16px;background:linear-gradient(135deg,var(--accent),#2563eb);box-shadow:0 14px 30px #2563eb47}.searchbar button{min-width:112px}.searchbar button:hover:not(:disabled),.chat-inputbar button:hover:not(:disabled),.auth-submit-btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 18px 38px #2563eb57}.examples{margin:0}.example-chip{max-width:100%;border-color:#94a3b82e;background:#0f172ab8;color:#dbeafe;text-align:left}.example-chip:hover{transform:translateY(-1px);border-color:#14b8a68c;background:#14b8a61f}.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:18px}.metric-card{padding:17px 18px;border-radius:var(--radius-md);background:#0f172ab8}.metric-card span{display:block;overflow:hidden;color:var(--text);font-size:24px;font-weight:850;letter-spacing:-.05em;text-overflow:ellipsis;white-space:nowrap}.metric-card small{display:block;margin-top:4px;color:var(--muted);font-size:12px}.metric-card.accent{background:linear-gradient(135deg,#14b8a62e,#7c3aed33)}.section-nav{position:sticky;top:86px;z-index:15;gap:10px;padding:8px;margin-bottom:18px;border:1px solid rgba(148,163,184,.16);border-radius:20px;background:#070b16b8;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.section-nav button{display:flex;min-height:62px;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;border-color:transparent;border-radius:15px;background:transparent;padding:10px 14px;text-align:left}.section-nav button span{color:var(--text);font-weight:800}.section-nav button small{color:var(--muted);font-size:11.5px}.section-nav button:hover{background:#ffffff0d;transform:translateY(-1px)}.section-nav button.active{border-color:#14b8a652;background:linear-gradient(135deg,#7c3aed80,#14b8a647)}.section-nav button.active small{color:#ccfbf1}.content{padding-bottom:40px}.welcome-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(340px,1.05fr);gap:16px}.card{overflow:hidden;border-radius:var(--radius-md);background:linear-gradient(180deg,#0f172adb,#0f172aad)}.card h2{color:var(--text);font-size:18px;letter-spacing:-.03em}.guide-card,.examples-card{min-height:330px}.workflow{display:grid;gap:12px;margin-top:18px}.workflow-item{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:14px;border:1px solid rgba(148,163,184,.14);border-radius:16px;background:#02061747}.workflow-item>span{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:#14b8a624;color:#5eead4;font-weight:900}.workflow-item strong{display:block;margin-bottom:4px}.workflow-item p{margin:0;color:var(--muted);line-height:1.5}.example-list{display:grid;gap:10px;margin-top:18px}.example-row{display:grid;grid-template-columns:42px 1fr;gap:12px;align-items:center;width:100%;border:1px solid rgba(148,163,184,.14);border-radius:15px;background:#02061747;color:var(--text);padding:12px;text-align:left;cursor:pointer}.example-row span{color:#93c5fd;font-size:12px;font-weight:900}.example-row:hover{transform:translateY(-1px);border-color:#14b8a673;background:#14b8a61a}.doc-item,.exp-item,.chat-bubble,.upload-drop,.doc-full{border-color:#94a3b829;background:#02061752}.doc-item,.exp-item{border-radius:15px}.doc-item:hover{transform:translateY(-1px);border-color:#14b8a680;background:#0f172adb}.badge,.chip,.src-tag,.count{border:1px solid rgba(255,255,255,.08);border-radius:999px}.chip{background:#2563eb2e}.summary-card{border-color:#14b8a638}.summary-text,.chat-text,.doc-full{line-height:1.7}.graph-canvas{border-radius:var(--radius-md);background:radial-gradient(circle at 50% 0%,rgba(124,58,237,.15),transparent 20rem),#060914}.graph-toolbar,.graph-legend,.graph-zoom{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.upload-panel{max-width:860px;margin:0 auto}.upload-drop{border-radius:22px;background:linear-gradient(135deg,#14b8a614,#7c3aed1f),#02061747}.chat-panel{min-height:640px}.chat-head{border-radius:var(--radius-md)}.chat-inputbar{position:sticky;bottom:0;padding:14px;border:1px solid rgba(148,163,184,.14);border-radius:20px;background:#070b16c7;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.modal-overlay{background:#020617c2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.modal{border-radius:24px;box-shadow:var(--shadow)}.auth-wrapper{background:radial-gradient(circle at 18% 10%,rgba(124,58,237,.3),transparent 30rem),radial-gradient(circle at 84% 20%,rgba(20,184,166,.22),transparent 28rem),var(--bg)}.auth-card{max-width:480px;border-radius:28px;background:linear-gradient(180deg,#0f172ae6,#0f172ab8);box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.auth-logo{margin-inline:auto}.auth-guest-btn,.chat-clear{border-radius:14px;background:#0f172ab3}.error{border-color:#f8717159;border-radius:15px;background:#7f1d1d9e}@media (max-width: 980px){.hero,.welcome-grid{grid-template-columns:1fr}.hero-copy{min-height:auto}.stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 720px){.app{padding:14px}.topbar{position:static;align-items:flex-start}.topbar-right{width:100%;flex-direction:row;justify-content:space-between;align-items:center}.brand h1{font-size:19px}.hero{gap:14px}.hero-copy,.hero-panel,.card{border-radius:22px}.hero-copy h2{font-size:36px}.searchbar{flex-direction:column}.searchbar button{width:100%;min-height:52px}.stats-grid{grid-template-columns:1fr}.section-nav{position:static;display:grid;grid-template-columns:1fr 1fr}.section-nav button{min-height:58px}.section-nav button small{display:none}.workflow-item,.example-row{grid-template-columns:1fr}.chat-inputbar{flex-direction:column}}.graph-shell{display:grid;gap:14px}.graph-header{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;padding:4px 2px}.graph-header h2{margin:4px 0 0;font-size:24px;letter-spacing:-.04em}.graph-subtitle{max-width:680px;margin:6px 0 0;color:#a7f3d0;font-size:13px;line-height:1.45}.graph-statline{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.graph-statline span{border:1px solid rgba(148,163,184,.16);border-radius:999px;background:#0f172aad;color:#cbd5e1;padding:7px 10px;font-size:12px;font-weight:800}.graph-layoutbar{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;padding:8px;border:1px solid rgba(148,163,184,.16);border-radius:20px;background:#070b1694;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.graph-layoutbar button{min-height:58px;border:1px solid transparent;border-radius:15px;background:transparent;color:var(--muted);cursor:pointer;padding:9px 12px;text-align:left}.graph-layoutbar button:hover,.graph-layoutbar button.active{transform:translateY(-1px);border-color:#14b8a657;background:#14b8a61a;color:var(--text)}.graph-layoutbar button.active{background:linear-gradient(135deg,#7c3aed6b,#14b8a638)}.graph-layoutbar span,.graph-layoutbar small{display:block}.graph-layoutbar span{color:var(--text);font-weight:850}.graph-layoutbar small{margin-top:3px;color:var(--muted);font-size:11px}.graph-workspace{display:grid;grid-template-columns:230px minmax(0,1fr) 280px;gap:12px;align-items:stretch}.graph-sidebar{min-height:680px;border:1px solid rgba(148,163,184,.16);border-radius:22px;background:#0f172ab8;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);padding:14px}.graph-sidebar-left,.graph-inspector{display:flex;flex-direction:column;gap:14px}.graph-side-section h3,.graph-empty-state h3{margin:0 0 10px;font-size:13px;letter-spacing:.02em;text-transform:uppercase}.graph-toggle,.graph-actions button{width:100%;border:1px solid rgba(148,163,184,.18);border-radius:13px;background:#02061757;color:var(--text);cursor:pointer;padding:9px 10px;text-align:left;font-size:12.5px;font-weight:800}.graph-toggle.active,.graph-actions button:hover{border-color:#14b8a67a;background:#14b8a61f}.graph-actions{display:grid;gap:7px}.graph-segmented{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:4px;border:1px solid rgba(148,163,184,.14);border-radius:14px;background:#02061747;padding:4px}.graph-segmented button{min-height:34px;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--muted);cursor:pointer;padding:6px 7px;font-size:11.5px;font-weight:850}.graph-segmented button:hover,.graph-segmented button.active{border-color:#14b8a657;background:linear-gradient(135deg,#14b8a62e,#7c3aed29);color:var(--text)}.graph-help,.graph-empty-state p{margin:10px 0 0;color:var(--muted);font-size:12px;line-height:1.5}.graph-sidebar .graph-legend{position:static;display:grid;gap:5px;border:0;background:transparent;padding:0}.graph-sidebar .legend-item{display:grid;grid-template-columns:12px minmax(0,1fr) auto;gap:8px;align-items:center;border:1px solid rgba(148,163,184,.12);border-radius:12px;background:#02061742;padding:8px}.graph-sidebar .legend-item span:nth-child(2){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.graph-sidebar .legend-item small{color:var(--muted);font-size:11px}.graph-wrap{min-width:0}.graph-workspace .graph-canvas{height:680px;border-radius:22px;box-shadow:var(--shadow)}.graph-collapse-note{position:absolute;left:18px;bottom:18px;z-index:6;border:1px solid rgba(251,113,133,.32);border-radius:999px;background:#7f1d1d8a;color:#fecdd3;padding:7px 11px;font-size:12px;font-weight:800}.graph-node-card{border:1px solid rgba(148,163,184,.16);border-radius:18px;background:radial-gradient(circle at 100% 0%,color-mix(in srgb,var(--node-color, #6366f1) 28%,transparent),transparent 10rem),#02061747;padding:14px}.graph-node-card h3{margin:10px 0 0;font-size:17px;line-height:1.25;letter-spacing:-.03em}.graph-node-type{display:inline-flex;align-items:center;gap:7px;border:1px solid color-mix(in srgb,var(--node-color) 42%,transparent);border-radius:999px;background:color-mix(in srgb,var(--node-color) 18%,transparent);color:#f8fafc;padding:4px 9px;font-size:11px;font-weight:900}.graph-node-type:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--node-color)}.graph-node-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.graph-node-meta span{border-radius:999px;background:#ffffff12;color:#cbd5e1;padding:4px 8px;font-size:11px}.inspector-actions{grid-template-columns:1fr}.graph-attrs{display:grid;gap:8px;margin:0}.graph-attrs div{border-bottom:1px solid rgba(148,163,184,.12);padding-bottom:8px}.graph-attrs dt{color:var(--muted);font-size:11px}.graph-attrs dd{margin:3px 0 0;color:var(--text);font-size:12.5px;word-break:break-word}.graph-rel-list{display:grid;gap:8px}.graph-rel{display:grid;grid-template-columns:28px minmax(0,1fr);gap:8px;align-items:center;border:1px solid rgba(148,163,184,.14);border-radius:14px;background:#02061742;padding:9px}.graph-rel>span{display:grid;place-items:center;width:26px;height:26px;border-radius:999px;background:#14b8a61f;color:#5eead4;font-weight:900}.graph-rel b,.graph-rel small{display:block}.graph-rel b{color:var(--text);font-size:12.5px}.graph-rel small{overflow:hidden;margin-top:2px;color:var(--muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}@media (max-width: 1180px){.graph-workspace{grid-template-columns:210px minmax(0,1fr)}.graph-inspector{grid-column:1 / -1;min-height:auto}}@media (max-width: 860px){.graph-header{align-items:flex-start;flex-direction:column}.graph-statline{justify-content:flex-start}.graph-layoutbar,.graph-workspace{grid-template-columns:1fr}.graph-sidebar{min-height:auto}.graph-workspace .graph-canvas{height:560px}}