@import "https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;600;700;900&family=JetBrains+Mono:wght@400;500;600;700&display=swap";:root{--bg:#f7f5f0;--surface:#fff;--surface-2:#f0ede5;--ink:#1e2321;--ink-muted:#5b645d;--ink-faint:#8b9089;--border:#d9d4c7;--accent:#0095cf;--accent-soft:#e2f2f9;--danger:#a13a3a;--danger-soft:#f4e0e0;--code-bg:#ece7db}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Noto Sans TC,system-ui,sans-serif;line-height:1.7}.app{max-width:640px;margin:0 auto;padding:56px 20px 96px}.eyebrow{letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:10px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:600;display:inline-block}header h1{letter-spacing:-.01em;margin:0 0 8px;font-size:26px;font-weight:900}.panel-sub{color:var(--ink-muted);margin:0 0 20px;font-size:14px}.tab-bar{background:var(--surface-2);border-radius:10px;gap:4px;margin-bottom:24px;padding:4px;display:flex}.tab-btn{color:var(--ink-muted);cursor:pointer;background:0 0;border:none;border-radius:7px;flex:1;padding:9px 12px;font-family:inherit;font-size:13.5px;font-weight:600;transition:all .15s}.tab-btn.active{background:var(--surface);color:var(--accent);box-shadow:0 1px 2px #1e232114}.tab-btn:not(.active):hover{color:var(--ink)}.ask-form{gap:8px;margin-bottom:14px;display:flex}.ask-form input{background:var(--surface-2);color:var(--ink);border:none;border-radius:10px;flex:1;padding:12px 16px;font-family:inherit;font-size:15px;transition:background .15s}.ask-form input:focus{box-shadow:0 0 0 2px var(--accent);outline:none}.ask-form input:disabled{opacity:.6}.send-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:50%;flex:none;justify-content:center;align-items:center;width:44px;height:44px;font-family:inherit;transition:opacity .15s,background .15s;display:flex}.send-btn:disabled{background:var(--surface-2);color:var(--ink-faint);cursor:not-allowed}.send-btn:not(:disabled):hover{opacity:.88}.send-icon{font-size:18px;font-weight:700;line-height:1}.send-spinner{border-top-color:#fff}.send-btn:disabled .send-spinner{border-top-color:var(--ink-faint)}.mic-btn{background:var(--surface-2);cursor:pointer;border:none;border-radius:50%;flex:none;justify-content:center;align-items:center;width:44px;height:44px;transition:background .15s;display:flex}.mic-btn:hover:not(:disabled){background:var(--accent-soft)}.mic-btn:disabled{opacity:.5;cursor:not-allowed}.mic-btn.recording{background:var(--danger-soft)}.mic-icon{width:14px;height:18px;display:block;position:relative}.mic-icon-capsule{background:var(--ink-muted);border-radius:4px;width:8px;height:12px;position:absolute;top:0;left:3px}.mic-icon-stand{border:1.5px solid var(--ink-muted);border-top:none;border-radius:0 0 6px 6px;width:12px;height:5px;position:absolute;bottom:0;left:1px}.mic-icon-square{background:var(--danger);width:13px;height:13px}.mic-spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:16px;height:16px;animation:.7s linear infinite spin}.examples{flex-wrap:wrap;gap:8px;margin-bottom:32px;display:flex}.example-chip{background:var(--surface);color:var(--ink-muted);cursor:pointer;border:none;border-radius:20px;padding:6px 12px;font-family:JetBrains Mono,monospace;font-size:12px;transition:all .15s;box-shadow:0 1px 2px #1e23210f}.example-chip:hover:not(:disabled){color:var(--accent);background:var(--accent-soft)}.example-chip:disabled{opacity:.5;cursor:not-allowed}.skeleton{background:var(--surface);border-radius:12px;flex-direction:column;gap:12px;padding:22px 24px;display:flex;box-shadow:0 1px 2px #1e23210f}.spinner-row{color:var(--ink-muted);align-items:center;gap:10px;font-family:JetBrains Mono,monospace;font-size:13px;display:flex}.spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;flex:none;width:14px;height:14px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.skeleton-line{background:linear-gradient(90deg, var(--surface-2) 25%, var(--code-bg) 50%, var(--surface-2) 75%);background-size:200% 100%;border-radius:6px;height:12px;animation:1.4s ease-in-out infinite shimmer}.skeleton-line.w-full{width:100%}.skeleton-line.w-2-3{width:66%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (prefers-reduced-motion:reduce){.spinner,.skeleton-line{animation:none}}.error-box{background:var(--danger-soft);color:var(--danger);border-radius:10px;gap:12px;margin-bottom:20px;padding:14px 16px;font-size:13.5px;display:flex}.error-icon{flex:none;font-family:JetBrains Mono,monospace;font-weight:700}.error-box p{color:var(--ink);margin:2px 0 0}.result{background:var(--surface);border-radius:12px;padding:24px 26px;box-shadow:0 1px 2px #1e23210d,0 4px 16px #1e23210a}.answer-block{margin-bottom:4px}.answer-label{letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);font-family:JetBrains Mono,monospace;font-size:10.5px;font-weight:600}.answer{margin:8px 0 0;font-size:15.5px;line-height:1.8}.answer p{margin:0 0 12px}.answer p:last-child{margin-bottom:0}.answer strong{color:var(--ink);font-weight:700}.answer h1,.answer h2,.answer h3{margin:16px 0 8px;font-size:15.5px;font-weight:700}.answer h1:first-child,.answer h2:first-child,.answer h3:first-child{margin-top:0}.answer ul,.answer ol{margin:0 0 12px;padding-left:0;list-style:none}.answer li{margin-bottom:4px}.answer code{background:var(--code-bg);border-radius:4px;padding:1px 5px;font-family:JetBrains Mono,monospace;font-size:.92em}.answer hr{border:none;border-top:1px solid var(--border);margin:14px 0}.videos-block{margin-top:20px;padding-top:18px}.video-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin-top:10px;display:grid}.video-card{background:var(--surface-2);border-radius:8px;overflow:hidden;box-shadow:0 1px 2px #1e23210f}.video-card iframe{aspect-ratio:16/9;border:none;width:100%;display:block}.video-external-link{aspect-ratio:16/9;background:linear-gradient(160deg, var(--code-bg), var(--surface-2));color:var(--accent);flex-direction:column;justify-content:center;align-items:center;gap:8px;text-decoration:none;transition:background .15s;display:flex}.video-external-link:hover{background:var(--accent-soft)}.video-external-play{background:var(--accent);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;padding-left:2px;font-size:14px;display:flex}.video-external-label{font-size:12px;font-weight:600}.video-title{color:var(--ink);margin:8px 10px 0;font-size:12.5px;font-weight:600}.video-ref{color:var(--ink-faint);margin:2px 10px 10px;font-family:JetBrains Mono,monospace;font-size:11px}.sources-toggle{color:var(--ink-muted);cursor:pointer;text-align:left;background:0 0;border:none;width:100%;margin-top:18px;padding:8px 0;font-family:JetBrains Mono,monospace;font-size:12.5px}.sources-toggle:hover{color:var(--accent)}.sources{flex-direction:column;gap:10px;margin:10px 0 0;padding:0;list-style:none;display:flex}.sources li{background:var(--surface-2);border-radius:8px;align-items:flex-start;gap:12px;padding:10px 14px;font-size:12.5px;display:flex}.source-body{flex:1;min-width:0}.page-thumb-btn{background:var(--surface);cursor:pointer;border:none;border-radius:6px;flex:none;width:72px;height:96px;padding:0;position:relative;overflow:hidden;box-shadow:0 1px 3px #1e232126}.page-thumb{object-fit:cover;object-position:top;width:100%;height:100%;display:block}.page-thumb-hint{color:#fff;text-align:center;opacity:0;background:#1e2321b8;padding:2px 0;font-size:9px;transition:opacity .15s;position:absolute;inset:auto 0 0}.page-thumb-btn:hover .page-thumb-hint{opacity:1}.page-thumb-wrap{flex-direction:column;align-items:center;gap:4px;display:flex}.page-pdf-link{color:var(--accent);text-align:center;max-width:72px;font-size:10px;line-height:1.3;text-decoration:none}.page-pdf-link:hover{text-decoration:underline}.lightbox-overlay{z-index:100;background:#141816b8;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.lightbox-panel{background:var(--surface);border-radius:10px;flex-direction:column;max-width:90vw;max-height:90vh;display:flex;overflow:hidden}.lightbox-head{color:var(--ink-muted);justify-content:space-between;align-items:center;padding:10px 14px;font-family:JetBrains Mono,monospace;font-size:12.5px;display:flex}.lightbox-head-actions{align-items:center;gap:14px;display:flex}.lightbox-head-actions a{color:var(--accent);font-size:12px;text-decoration:none}.lightbox-head-actions a:hover{text-decoration:underline}.lightbox-head button{cursor:pointer;color:var(--ink-muted);background:0 0;border:none;font-size:14px}.lightbox-panel img{object-fit:contain;max-width:100%;max-height:calc(90vh - 40px);display:block}.source-head{justify-content:space-between;align-items:center;display:flex}.page-tag{color:var(--accent);font-family:JetBrains Mono,monospace;font-size:12px;font-weight:700}.score{color:var(--ink-faint);font-family:JetBrains Mono,monospace;font-size:11px}.snippet{color:var(--ink-muted);margin:6px 0 0;line-height:1.6}.chat-panel{flex-direction:column;display:flex}.chat-window{flex-direction:column;gap:14px;min-height:240px;max-height:55vh;margin-bottom:14px;padding:4px 2px 12px;display:flex;overflow-y:auto}.chat-empty{color:var(--ink-muted);padding:8px 0;font-size:13.5px}.chat-empty p{margin:0 0 10px}.chat-bubble-row{flex-direction:column;display:flex}.chat-bubble-row.user{align-items:flex-end}.chat-bubble-row.assistant{align-items:flex-start}.chat-bubble{border-radius:12px;max-width:88%;padding:10px 14px;font-size:14.5px;line-height:1.7}.chat-bubble.user{background:var(--accent);color:#fff;border-bottom-right-radius:3px}.chat-bubble.assistant{background:var(--surface);color:var(--ink);border-bottom-left-radius:3px;box-shadow:0 1px 2px #1e23210f}.chat-bubble.assistant *{color:inherit}.chat-bubble.assistant :is(p,ul,ol){margin:0 0 8px}.chat-bubble.assistant :last-child{margin-bottom:0}.chat-bubble.assistant strong{font-weight:700}.chat-bubble.assistant ul,.chat-bubble.assistant ol{padding-left:20px}.chat-bubble.assistant table{border-collapse:collapse;margin:4px 0 8px;font-size:13px}.chat-bubble.assistant th,.chat-bubble.assistant td{border:1px solid var(--border);text-align:left;padding:4px 8px}.chat-bubble.assistant th{background:var(--surface-2)}.chat-thinking{align-items:center;gap:5px;min-height:12px;padding-top:10px;padding-bottom:10px;display:flex}.typing-dot{background:var(--ink-faint);border-radius:50%;width:7px;height:7px;animation:1.2s ease-in-out infinite typingBounce}.typing-dot:nth-child(2){animation-delay:.15s}.typing-dot:nth-child(3){animation-delay:.3s}@keyframes typingBounce{0%,60%,to{opacity:.5;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}@media (prefers-reduced-motion:reduce){.typing-dot{opacity:.8;animation:none}}.chat-thumb-row{gap:8px;max-width:88%;margin-top:8px;display:flex}.chat-video-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));max-width:88%;margin-top:8px}.msg-meta{color:var(--ink-faint);margin-top:5px;font-size:11px}.tool-trace{color:var(--ink-faint);flex-wrap:wrap;align-items:center;gap:6px;margin-top:6px;font-family:JetBrains Mono,monospace;font-size:10.5px;display:flex}.tool-pill{background:var(--accent-soft);color:var(--accent);border-radius:20px;align-items:center;gap:4px;padding:2px 8px;display:inline-flex}.tool-pill-input{color:var(--ink-faint);font-weight:400}.mode-toggle{background:var(--surface-2);border-radius:10px;gap:4px;margin-bottom:10px;padding:4px;display:flex}.mode-btn{color:var(--ink-muted);cursor:pointer;background:0 0;border:none;border-radius:7px;flex:1;padding:9px 12px;font-family:inherit;font-size:13.5px;font-weight:600;transition:all .15s}.mode-btn.active{background:var(--surface);color:var(--accent);box-shadow:0 1px 2px #1e232114}.mode-btn:disabled{opacity:.6;cursor:not-allowed}.record-area{justify-content:center;align-items:center;gap:14px;margin:20px 0;display:flex}.icon-btn{cursor:pointer;border:none;border-radius:50%;flex:none;justify-content:center;align-items:center;width:56px;height:56px;transition:all .15s;display:flex}.icon-btn-record{background:var(--surface);box-shadow:0 1px 3px #1e23211f}.icon-btn-record:hover{box-shadow:0 2px 6px #1e23212e}.icon-btn-secondary,.icon-btn-stop{background:var(--surface-2)}.icon-circle{background:var(--danger);border-radius:50%;width:22px;height:22px}.icon-btn-secondary .icon-circle{width:18px;height:18px}.icon-pause{background:linear-gradient(to right, var(--ink) 0 5px, transparent 5px 11px, var(--ink) 11px 16px);width:16px;height:18px}.icon-square{background:var(--ink);border-radius:3px;width:16px;height:16px}.record-hint{color:var(--ink-muted);font-family:JetBrains Mono,monospace;font-size:13px}.record-hint-live{color:var(--danger);padding-left:14px;position:relative}.record-hint-live:before{content:"";background:var(--danger);border-radius:50%;width:8px;height:8px;animation:1.2s ease-in-out infinite recordBlink;position:absolute;top:50%;left:0;transform:translateY(-50%)}@keyframes recordBlink{0%,to{opacity:1}50%{opacity:.25}}@media (prefers-reduced-motion:reduce){.record-hint-live:before{animation:none}}.preview-block{background:var(--surface);border-radius:12px;flex-direction:column;gap:12px;margin:4px 0 20px;padding:16px 18px;display:flex;box-shadow:0 1px 2px #1e23210f}.preview-audio{width:100%}.preview-actions{justify-content:flex-end;gap:10px;display:flex}.ghost-btn{background:var(--surface-2);color:var(--ink-muted);cursor:pointer;border:none;border-radius:10px;padding:9px 18px;font-family:inherit;font-size:13.5px;font-weight:600}.ghost-btn:hover{color:var(--ink)}.ask-form-btn{background:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:10px;padding:9px 22px;font-family:inherit;font-size:13.5px;font-weight:700;transition:opacity .15s}.ask-form-btn:hover{opacity:.88}.voice-block{background:var(--surface);border-radius:12px;margin-top:14px;padding:18px 20px;box-shadow:0 1px 2px #1e23210f}.voice-transcript{color:var(--ink-muted);white-space:pre-wrap;margin:8px 0 0;font-size:14px;line-height:1.7}.voice-result{background:var(--accent-soft)}.voice-result-text{color:var(--ink);white-space:pre-wrap;margin:8px 0 0;font-size:15px;line-height:1.8}.voice-history{flex-direction:column;gap:10px;margin-top:20px;display:flex}.voice-entry{padding-top:16px}.voice-entry:first-child{padding-top:0}.voice-entry-head{align-items:center;gap:10px;margin-bottom:4px;display:flex}.voice-entry-tag{border-radius:20px;padding:2px 9px;font-family:JetBrains Mono,monospace;font-size:11px;font-weight:700}.voice-entry-tag.idn{background:var(--accent-soft);color:var(--accent)}.voice-entry-tag.asm{background:var(--code-bg);color:var(--ink-muted)}.voice-entry-time{color:var(--ink-faint);font-family:JetBrains Mono,monospace;font-size:11px}.chat-bubble.assistant a{color:var(--accent);border-bottom:1px solid color-mix(in srgb, var(--accent) 35%, transparent);padding-bottom:1px;text-decoration:none;transition:border-color .15s,color .15s}.chat-bubble.assistant a:hover{border-bottom-color:var(--accent)}