:root{--bg:#fff;--bg-soft:#f6f7f9;--bg-elev:#fff;--fg:#1a1c1f;--fg-dim:#5c6470;--fg-faint:#8b939f;--line:#e6e8ec;--line-strong:#d3d7de;--accent:#2b6cff;--accent-soft:#eaf1ff;--accent-fg:#1b4fd6;--warn:#b45309;--warn-soft:#fff7ed;--shadow-sm:0 1px 2px #1018280f;--shadow:0 4px 16px #10182814;--shadow-lg:0 16px 48px #10182824;--radius:12px;--radius-lg:18px;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}[data-theme=dark]{--bg:#0f1115;--bg-soft:#161a20;--bg-elev:#1a1f26;--fg:#e8eaed;--fg-dim:#a3abb6;--fg-faint:#6f7885;--line:#262c35;--line-strong:#333b46;--accent:#5b8cff;--accent-soft:#17233d;--accent-fg:#8fb0ff;--warn:#f0b429;--warn-soft:#2a2213;--shadow-sm:0 1px 2px #0006;--shadow:0 4px 18px #00000073;--shadow-lg:0 18px 52px #0009}*{box-sizing:border-box}html,body{overscroll-behavior:none;-webkit-text-size-adjust:100%;touch-action:manipulation;min-height:100%;margin:0;padding:0}body{background:var(--bg);color:var(--fg);font:15px/1.7 -apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,system-ui,sans-serif;transition:background .2s,color .2s}a{color:var(--accent-fg);text-decoration:none}a:hover{text-decoration:underline}button,input,textarea{font:inherit}.page{max-width:1180px;margin:0 auto;padding:0 20px 80px}.brand{letter-spacing:.5px;align-items:baseline;gap:8px;font-weight:700;display:inline-flex}.brand .logo-mark{background:linear-gradient(135deg, var(--accent), #7c4dff);color:#0000;-webkit-background-clip:text;background-clip:text;font-size:1.05em}.home{flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:32px 20px 48px;display:flex}.home-inner{width:100%;max-width:720px}.home-hero{text-align:center;margin-bottom:26px}.home-title{letter-spacing:-.5px;background:linear-gradient(120deg, var(--accent), #7c4dff 70%);color:#0000;-webkit-background-clip:text;background-clip:text;margin:0 0 10px;font-size:clamp(34px,8vw,52px);font-weight:800}.home-sub{color:var(--fg-dim);margin:0;font-size:15px}.searchbox{background:var(--bg-elev);border:1px solid var(--line-strong);box-shadow:var(--shadow-sm);border-radius:999px;align-items:center;gap:8px;padding:6px 6px 6px 18px;transition:box-shadow .18s,border-color .18s;display:flex}.searchbox:focus-within{border-color:var(--accent);box-shadow:var(--shadow)}.searchbox input{min-width:0;color:var(--fg);background:0 0;border:0;outline:0;flex:1;padding:12px 0;font-size:16px}.searchbox input::placeholder{color:var(--fg-faint)}.searchbox .go{cursor:pointer;color:#fff;background:var(--accent);border:0;border-radius:999px;flex:none;height:44px;min-height:44px;padding:12px 22px;font-weight:600;transition:filter .15s}.searchbox .go:hover{filter:brightness(1.08)}.searchbox .go:disabled{opacity:.55;cursor:not-allowed}.searchbox.compact{box-shadow:none;border-radius:999px;padding:2px 2px 2px 14px}.searchbox.compact input{padding:9px 0;font-size:15px}.searchbox.compact .go{padding:9px 16px}.panel{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-lg);margin-top:26px;padding:18px 20px}.panel-title{color:var(--fg-dim);letter-spacing:.4px;align-items:center;gap:8px;margin:0 0 12px;font-size:13px;font-weight:600;display:flex}.chips{flex-wrap:wrap;gap:8px;display:flex}.chip{border:1px solid var(--line);background:var(--bg-elev);color:var(--fg);cursor:pointer;border-radius:999px;align-items:center;gap:6px;min-height:44px;padding:8px 14px;font-size:14px;transition:border-color .15s,background .15s;display:inline-flex}.chip:hover{border-color:var(--accent);background:var(--accent-soft)}.chip .rank{color:var(--fg-faint);font-variant-numeric:tabular-nums;font-size:12px}.home-foot{text-align:center;color:var(--fg-faint);margin-top:22px;font-size:12.5px}.topbar{z-index:20;-webkit-backdrop-filter:saturate(180%)blur(12px);backdrop-filter:saturate(180%)blur(12px);background:color-mix(in srgb, var(--bg) 88%, transparent);border-bottom:1px solid var(--line);position:sticky;top:0}.topbar-inner{align-items:center;gap:14px;max-width:1180px;margin:0 auto;padding:10px 20px;display:flex}.topbar .searchbox{flex:1;min-width:0;max-width:620px}@media (max-width:560px){.topbar .brand{display:none}.topbar-inner{gap:8px;padding:8px 12px}.topbar-right{gap:6px}}.topbar-right{align-items:center;gap:8px;margin-left:auto;display:flex}.icon-btn{border:1px solid var(--line);background:var(--bg-elev);width:44px;height:44px;color:var(--fg-dim);cursor:pointer;border-radius:10px;flex:none;justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover{color:var(--fg);border-color:var(--line-strong)}.result-grid{grid-template-columns:minmax(0,1fr) 340px;align-items:start;gap:28px;padding-top:22px;display:grid}@media (max-width:980px){.result-grid{grid-template-columns:minmax(0,1fr);gap:20px}}.statusline{color:var(--fg-dim);flex-wrap:wrap;align-items:center;gap:10px;min-height:26px;margin-bottom:10px;font-size:13.5px;display:flex}.pulse{background:var(--accent);border-radius:50%;width:8px;height:8px;animation:1.1s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1.15)}}.query-chips{flex-wrap:wrap;gap:6px;margin-bottom:12px;display:flex}.query-chip{color:var(--fg-dim);background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;padding:4px 11px;font-size:12.5px}.answer{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:24px 26px}@media (max-width:520px){.answer{padding:18px 16px}}.answer h1,.answer h2{border-bottom:1px solid var(--line);margin:22px 0 10px;padding-bottom:6px;font-size:19px}.answer h1:first-child,.answer h2:first-child{margin-top:0}.answer h3{margin:18px 0 8px;font-size:16.5px}.answer p{margin:0 0 12px}.answer ul,.answer ol{margin:0 0 12px;padding-left:22px}.answer li{margin:4px 0}.answer strong{color:var(--fg)}.answer code{font-family:var(--mono);background:var(--bg-soft);border:1px solid var(--line);border-radius:5px;padding:1px 5px;font-size:.9em}.answer pre{background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;padding:12px 14px;overflow-x:auto}.answer pre code{background:0 0;border:0;padding:0}.answer blockquote{border-left:3px solid var(--line-strong);color:var(--fg-dim);margin:0 0 12px;padding:2px 0 2px 14px}.answer table{border-collapse:collapse;width:100%;margin:0 0 14px;font-size:14px;display:block;overflow-x:auto}.answer th,.answer td{border:1px solid var(--line);text-align:left;padding:8px 10px}.answer th{background:var(--bg-soft)}.cite{text-align:center;font-variant-numeric:tabular-nums;background:var(--accent-soft);min-width:17px;height:17px;color:var(--accent-fg);vertical-align:2px;cursor:pointer;border-radius:5px;margin:0 2px 0 1px;padding:0 3px;font-size:11px;font-weight:700;line-height:17px;display:inline-block}.cite:hover,.cite.active{background:var(--accent);color:#fff;text-decoration:none}.caret{vertical-align:-2px;background:var(--accent);width:8px;height:1.05em;animation:1s steps(2,start) infinite blink;display:inline-block}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.sources{position:sticky;top:76px}@media (max-width:980px){.sources{position:static}}.sources-card{background:var(--bg-elev);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:16px 18px}.sources-head{color:var(--fg-dim);justify-content:space-between;align-items:center;margin-bottom:10px;font-size:13px;font-weight:600;display:flex}.src{border:1px solid #0000;border-radius:10px;gap:10px;min-height:56px;padding:10px 8px;transition:background .15s,border-color .15s;display:flex}.src+.src{margin-top:2px}.src:hover{background:var(--bg-soft)}.src.flash{background:var(--accent-soft);border-color:var(--accent)}.src-no{background:var(--accent-soft);width:22px;height:22px;color:var(--accent-fg);font-variant-numeric:tabular-nums;border-radius:6px;flex:none;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:inline-flex}.src-body{min-width:0}.src-title{min-height:44px;color:var(--fg);-webkit-line-clamp:2;-webkit-box-orient:vertical;padding:4px 0 0;font-size:13.5px;line-height:1.45;display:-webkit-box;overflow:hidden}.src-meta{color:var(--fg-faint);word-break:break-all;margin-top:3px;font-size:12px}.notice{border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-soft);margin-bottom:14px;padding:14px 16px;font-size:14px}.notice.error{border-color:color-mix(in srgb, var(--warn) 45%, var(--line));background:var(--warn-soft);color:var(--warn)}.skeleton{background:linear-gradient(90deg, var(--bg-soft), var(--line), var(--bg-soft));background-size:200% 100%;border-radius:6px;height:13px;margin-bottom:12px;animation:1.3s linear infinite shimmer}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.relate{margin-top:26px}.relate h3{color:var(--fg-dim);margin:0 0 10px;font-size:13px;font-weight:600}