:root{--ink:#172c3b;--muted:#61717c;--blue:#006a9b;--teal:#167b73;--line:#dde5e8;--bg:#f5f8f9;--orange:#e66d26}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:#fff;font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #eda537;outline-offset:3px}button{border:0;border-radius:9px;background:transparent;color:var(--ink);padding:10px 15px;font-weight:600}a{color:var(--blue)}.preview{background:#eaf1f4;text-align:center;font-size:10px;font-weight:750;letter-spacing:1.3px;padding:7px 18px}.preview span{font-weight:450;letter-spacing:0;margin-left:15px;font-size:12px}header{max-width:1320px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:22px 36px;border-bottom:1px solid var(--line);gap:25px}header img{width:240px;display:block}nav{display:flex;align-items:center;gap:10px;font-size:13px}.outline{border:1px solid #cad7dd;background:white}#count{display:inline-block;background:#eaf2f5;padding:0 7px;border-radius:20px;margin-left:5px}main{max-width:1248px;margin:auto;padding:0 28px}.hero{display:grid;grid-template-columns:1fr 1fr;gap:80px;padding:68px 0 64px;align-items:center}.eyebrow{font-size:10px;letter-spacing:1.8px;font-weight:750;color:var(--teal)}.eyebrow>span{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--teal);margin-right:7px}h1{font-size:58px;line-height:1.08;letter-spacing:-2.6px;margin:22px 0}h1>span{color:var(--blue)}h1 small{font-size:39px;display:block;letter-spacing:-1.2px;line-height:1.22;margin-top:25px;font-weight:550}.intro p{max-width:460px;color:var(--muted);font-size:17px}.trust{display:flex;gap:18px;font-size:11px;margin-top:25px;color:var(--muted)}.trust span:before{content:'✓';color:var(--teal);margin-right:7px;font-weight:bold}.ask-card{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:30px;box-shadow:0 16px 45px #173f5010;position:relative}.ask-card:before{content:'';position:absolute;left:28px;right:28px;top:0;height:3px;background:linear-gradient(90deg,#008ac5 25%,#da3972 25%,#da3972 50%,#f3c13f 50%,#f3c13f 75%,#318a59 75%)}.assistant-mark{background:var(--blue);width:42px;height:42px;display:grid;place-content:center;border-radius:12px;color:white;font-size:26px;font-weight:750;position:relative}.assistant-mark svg{display:block;width:27px;height:27px}h2{font-size:25px;line-height:1.3;letter-spacing:-.6px;margin:14px 0 8px}.ask-card>p{font-size:14px;color:var(--muted);margin:0 0 16px}textarea,input,select{border:1px solid #cad6dc;border-radius:8px;background:#fff;padding:12px;color:var(--ink);width:100%}textarea{min-height:115px;resize:vertical}textarea::placeholder,input::placeholder{color:#7e8c94}.primary{background:var(--blue);color:white;border:1px solid var(--blue)}#ask .primary{width:100%;display:flex;justify-content:space-between;margin-top:10px;padding:13px 16px}.examples{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0 13px}.examples>span{width:100%;font-size:11px;color:var(--muted)}.examples button{font-size:11px;background:white;border:1px solid var(--line);padding:6px 9px;border-radius:20px}.small{font-size:11px!important;color:var(--muted);line-height:1.5;margin-bottom:0!important}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:10px}.section-heading h2{font-size:28px;margin:9px 0 0}.section-heading>span{font-size:12px;color:var(--muted)}#library{border-top:1px solid var(--line);padding:35px 0}.filters{display:flex;gap:8px;align-items:center;margin:22px 0}.filters button{font-size:13px;border:1px solid var(--line)}.filters button.active{background:var(--ink);color:white;border-color:var(--ink)}.filters label{margin-left:auto;max-width:280px}.filters input{font-size:13px;padding:9px 12px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{text-align:left;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,border-color .15s;background:white}.card:hover{transform:translateY(-3px);border-color:#79afc0}.card img{width:100%;height:100px;object-fit:cover}.card-body{padding:17px;width:100%}.card h3{font-size:16px;margin:0 0 5px;line-height:1.3;letter-spacing:-.2px}.card p{font-size:12px;font-weight:400;line-height:1.5;color:var(--muted);margin:0}.card .arrow{float:right;color:var(--blue);font-size:19px}.measurement-art{width:100%;height:100px;display:grid;place-items:center;background:#e7f3f1;color:var(--teal);font-size:30px;font-weight:600}.bottom-note{margin:15px 0 48px;background:#eff5f5;border-radius:12px;padding:26px;display:flex;align-items:center;gap:22px}.bottom-note h3{font-size:17px;margin:0 0 4px}.bottom-note p{font-size:13px;color:var(--muted);margin:0;max-width:660px}.bottom-note button{font-size:12px;white-space:nowrap;margin-left:auto}.note-icon{width:34px;height:34px;border:1px solid #8bb5b1;border-radius:50%;display:grid;place-items:center;flex-shrink:0;color:var(--teal);font-family:serif;font-size:23px}footer{border-top:1px solid var(--line);padding:25px 36px;display:flex;gap:30px;justify-content:space-between;font-size:11px;color:var(--muted)}footer strong{color:var(--blue);font-size:16px}#detail{padding:38px 0}.back{padding-left:0;color:var(--blue);font-size:13px}.detail-grid{display:grid;grid-template-columns:280px 1fr;gap:40px;margin-top:22px}.detail-side img{width:100%;border-radius:12px;max-height:180px;object-fit:cover}.detail-side h2{font-size:29px}.caption{font-size:11px;color:var(--muted);line-height:1.5}.detail-side p{font-size:14px;color:var(--muted)}.context{padding:23px;border:1px solid var(--line);border-radius:12px;background:var(--bg);margin-bottom:25px}.context h3{margin:0 0 7px;font-size:18px}.context p{font-size:13px;color:var(--muted)}.fields{display:grid;grid-template-columns:1fr 1fr;gap:15px}.fields label{font-size:12px}.fields select{display:block;font-size:14px;margin-top:5px}.cause{border-top:1px solid var(--line);padding:21px 0}.cause h3{margin:0 0 12px;font-size:19px}.cause p{font-size:14px;margin:9px 0}.cause p b{display:block;font-size:10px;letter-spacing:1px;color:var(--teal);margin-bottom:3px}.check{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px;margin-top:15px}.check input{width:17px;height:17px;accent-color:var(--teal)}.reply-actions{display:flex;gap:9px;flex-wrap:wrap;margin:20px 0}.reply-actions button{font-size:13px}.response{background:#edf5f2;border-left:3px solid var(--teal);padding:18px;font-size:14px;margin:15px 0}.sources{font-size:12px;color:var(--muted);padding:17px 0;border-top:1px solid var(--line)}.steps{padding-left:22px}.steps li{padding:7px 0;font-size:15px}.pill{background:#fff3dc;color:#896020;border-radius:15px;font-size:10px;padding:4px 9px;display:inline-block;margin-bottom:10px}#match-note:not(:empty){padding:14px 18px;background:#eaf4f5;border-radius:9px;margin-bottom:20px;font-size:14px}.empty{grid-column:1/-1;padding:40px;text-align:center;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:18px;max-width:680px;width:calc(100% - 26px);padding:30px;max-height:90vh;color:var(--ink)}dialog::backdrop{background:#142e40aa;backdrop-filter:blur(3px)}.modal-head{display:flex;justify-content:space-between;gap:15px}.modal-head button{font-size:28px;align-self:start;padding:0 10px}dialog>p{font-size:14px;color:var(--muted)}dialog label{font-size:12px;display:block;margin-top:12px}dialog pre{font:12px/1.6 system-ui;background:var(--bg);padding:18px;border-radius:8px;white-space:pre-wrap;overflow-wrap:anywhere;max-height:260px;overflow:auto}.modal-actions{display:flex;gap:10px}.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}[hidden]{display:none!important}@media(max-width:1000px){.hero{gap:35px}.cards{grid-template-columns:repeat(3,1fr)}h1 small{font-size:32px}header{padding:20px}header img{width:190px}nav{gap:0}nav button{font-size:12px;padding:8px}.trust{flex-direction:column;gap:5px}}@media(max-width:700px){header{padding:16px;align-items:center}header img{width:170px}nav #browse,nav #measure{display:none}nav .outline{font-size:11px}main{padding:0 18px}.preview span{display:block;margin:2px 0 0;font-size:10px}.hero{grid-template-columns:1fr;gap:25px;padding:30px 0}.eyebrow{font-size:9px}h1{font-size:43px;margin:14px 0}h1 small{font-size:29px;margin-top:14px}.intro p{font-size:15px;margin:12px 0}.trust{flex-direction:row;gap:13px;font-size:10px;margin-top:15px}.ask-card{padding:23px}.ask-card h2{font-size:22px}.assistant-mark{float:right;width:34px;height:34px;font-size:22px}.section-heading h2{font-size:24px}.section-heading>span{display:none}.filters{flex-wrap:wrap}.filters button{font-size:12px;padding:9px 11px}.filters label{max-width:none;width:100%;margin-top:5px}.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.card img{height:82px}.card-body{padding:13px}.card h3{font-size:14px}.card p{font-size:11px}.bottom-note{padding:20px;flex-wrap:wrap;gap:12px}.note-icon{display:none}.bottom-note button{margin-left:0}footer{padding:22px 18px;flex-wrap:wrap;gap:10px}footer span:last-child{width:100%}.detail-grid{grid-template-columns:1fr;gap:10px}.detail-side img{max-height:120px;width:180px}.detail-side h2{font-size:28px}.fields{grid-template-columns:1fr}.context{padding:18px}dialog{padding:22px}.modal-head h2{font-size:23px}}@media print{body>*{display:none!important}dialog[open]{display:block!important;position:static;width:100%;max-width:none;max-height:none;border:none}dialog pre{max-height:none;overflow:visible}dialog button,dialog input,dialog textarea,dialog label,dialog .small{display:none!important}}

.related{padding:18px;background:#f1f5f8;border-radius:10px;margin-top:20px}.related strong{display:block;font-size:12px;margin-bottom:8px}.related button{font-size:12px;margin:4px 8px 4px 0}.filters{flex-wrap:wrap}

@media(max-width:700px){.assistant-mark svg{width:24px;height:24px}}

.card img.instrument-photo{height:170px;object-fit:contain;background:#fff;padding:12px;width:100%}.detail-side img.instrument-photo{height:250px;max-height:250px;object-fit:contain;background:#fff;width:100%;padding:10px}@media(max-width:700px){.card img.instrument-photo{height:160px}.detail-side img.instrument-photo{height:210px;max-height:210px;width:180px}}

.card img.lesson-photo{object-fit:contain;background:#f5f5f5;padding:0}.detail-side img.lesson-photo{object-fit:contain;width:100%;height:auto;max-height:none}

.card img.defect-diagram{object-fit:contain;background:#f2f6f7}.detail-side img.defect-diagram{object-fit:contain;width:100%;height:auto;max-height:none}

.summary-preview{margin:22px 0;border:1px solid var(--line);padding:22px;border-radius:10px;background:#fff;overflow-wrap:anywhere}.summary-brand{display:flex;justify-content:space-between;align-items:center;gap:12px}.summary-brand img{width:160px;max-width:55%}.summary-preview h3{background:#17395f;color:white;padding:9px 12px;font-size:14px;margin-top:22px}.summary-preview h4{background:#daecfa;padding:8px 12px;margin:18px 0 8px}.summary-preview p,.summary-preview li{font-size:13px}.customer-comments{white-space:pre-wrap;background:#f4f7fb;padding:14px;border-left:3px solid var(--blue)}.modal-actions{flex-wrap:wrap}.pdf-link{display:inline-block;text-decoration:none;border-radius:9px;padding:10px 15px;font-weight:600}#pdf-ready{background:#edf5f2;padding:15px;border-radius:10px;margin-top:15px}#pdf-ready p{font-size:13px;margin:0 0 10px}@media(max-width:700px){.summary-preview{padding:13px}.summary-brand{flex-wrap:wrap}.modal-actions>*{flex:1;text-align:center;font-size:13px}}

.ai-panel{border:1px solid var(--line);border-radius:18px;padding:28px;margin:0 0 45px;background:#f7fafb}.ai-panel>p{font-size:14px;color:var(--muted);max-width:850px}.ai-panel label{display:block;font-size:13px;font-weight:650;margin:14px 0 6px}.ai-panel input[type=file]{background:white;font-size:13px}.ai-panel .primary{margin:16px 0 8px}.ai-answer{background:white;border:1px solid #d1e4ea;border-left:4px solid var(--teal);border-radius:9px;padding:18px;margin:18px 0;white-space:pre-wrap;font-size:14px}.ai-error{color:#a12b2b;font-size:13px;margin:12px 0}.ai-panel button:disabled{opacity:.55;cursor:wait}@media(max-width:700px){.ai-panel{padding:18px}}

/* v0.8 demo preview */
.ai-demo-copy{white-space:pre-wrap;line-height:1.6;overflow-wrap:anywhere;margin-bottom:14px}.ai-thumbs{display:flex;flex-wrap:wrap;gap:12px;margin:14px 0}.ai-thumbs img{width:150px;height:120px;object-fit:contain;background:white;border:1px solid #cedae3;border-radius:9px}.ai-answer .outline{margin-top:10px}.ai-answer{overflow-wrap:anywhere}