:root{--bg:#f5f7fb;--panel:#fff;--ink:#172033;--muted:#6b7485;--line:#e3e8f0;--accent:#2257d8;--accent-soft:#eaf0ff;--good:#177c55;--good-soft:#e9f7f1;--warn:#9a6500;--warn-soft:#fff6dc;--bad:#b52d40;--bad-soft:#ffedf0;--shadow:0 10px 30px rgba(28,45,85,.07)}*{box-sizing:border-box}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC",sans-serif;background:var(--bg);color:var(--ink)}button,input,select,textarea{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr}.sidebar{background:#10182b;color:#fff;padding:24px 18px;display:flex;flex-direction:column;gap:26px}.brand-block{display:flex;align-items:center;gap:12px;padding:0 8px}.brand-block strong,.brand-block span{display:block}.brand-block span{font-size:12px;color:#aeb8cb;margin-top:2px}.brand-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,#6b8cff,#c5d2ff);color:#10182b;display:grid;place-items:center;font-weight:900}.sidebar nav{display:grid;gap:7px}.nav-item{border:0;background:transparent;color:#aeb8cb;text-align:left;padding:12px 14px;border-radius:10px;cursor:pointer}.nav-item:hover,.nav-item.active{background:#25314a;color:#fff}.sidebar-note{margin-top:auto;border:1px solid #2e3b57;border-radius:12px;padding:14px;display:grid;gap:5px}.sidebar-note span,.sidebar-note small{color:#aeb8cb}.sidebar-note small{font-size:11px}main{min-width:0;padding:0 28px 48px}.topbar{height:96px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);margin-bottom:24px}.topbar h1{font-size:24px;margin:0}.topbar p{margin:6px 0 0;color:var(--muted);font-size:14px}.topbar-actions{display:flex;gap:10px;align-items:center}.topbar select{min-width:250px}.view{display:none}.view.active{display:block}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:1fr 1fr}.panel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}.panel-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:16px}.panel h2{margin:2px 0 0;font-size:18px}.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-weight:700}.step,.pill{font-size:12px;padding:6px 9px;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:700}.pill.good{background:var(--good-soft);color:var(--good)}.pill.warn{background:var(--warn-soft);color:var(--warn)}.pill.bad{background:var(--bad-soft);color:var(--bad)}.pill.neutral{background:#eef1f6;color:#667085}.form-grid{display:grid;gap:14px}.form-grid.two{grid-template-columns:1fr 1fr}.form-grid.four{grid-template-columns:repeat(4,1fr)}label{display:grid;gap:7px;color:#4d5769;font-size:13px;font-weight:600}input,select,textarea{width:100%;border:1px solid #ccd4e0;border-radius:9px;padding:10px 11px;background:#fff;color:var(--ink)}textarea{resize:vertical;line-height:1.55}input:focus,select:focus,textarea:focus{outline:3px solid rgba(34,87,216,.12);border-color:var(--accent)}.surface-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.surface-option{border:1px solid var(--line);border-radius:11px;padding:12px;display:flex;align-items:center;gap:9px;cursor:pointer}.surface-option:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}.surface-option input{width:auto}.hint{font-size:12px;color:var(--muted);font-weight:400}.spacing-top{margin-top:18px}.formula-card{margin-top:18px;padding:14px 16px;border-radius:12px;background:#f0f4fb;display:flex;align-items:center;justify-content:space-between}.formula-card span,.formula-card strong{display:block}.formula-card span{font-size:12px;color:var(--muted);margin-bottom:4px}.formula-result{font-weight:800;color:var(--accent)}.action-row,.toolbar{display:flex;gap:12px;align-items:center;margin-top:16px}.toolbar{margin-top:0;flex-wrap:wrap}.toolbar label{display:flex;align-items:center;gap:8px}.toolbar input{width:auto}button{border:1px solid #cbd3df;background:#fff;color:var(--ink);padding:9px 13px;border-radius:9px;cursor:pointer;font-weight:700}button:hover{border-color:#8fa3cc}button.primary{border-color:var(--accent);background:var(--accent);color:#fff}.notice{margin-bottom:16px;padding:12px 14px;border-radius:10px;background:var(--warn-soft);color:var(--warn);border:1px solid #edd9a4}.notice.error{background:var(--bad-soft);color:var(--bad);border-color:#f0b7c0}.hidden{display:none!important}.trust-bar{display:flex;gap:14px;align-items:center;background:#16223a;color:#fff;border-radius:14px;padding:15px 18px}.trust-bar strong{font-size:20px}.trust-bar span{color:#c1cada;font-size:13px}.metric-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:16px}.metric-card{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:15px;box-shadow:var(--shadow)}.metric-card span{display:block;font-size:12px;color:var(--muted)}.metric-card strong{display:block;font-size:22px;margin:7px 0}.metric-card small{color:var(--muted)}.bar-list{display:grid;gap:12px}.bar-row{display:grid;grid-template-columns:140px 1fr 70px;gap:10px;align-items:center}.bar-track{height:9px;border-radius:999px;background:#edf0f5;overflow:hidden}.bar-fill{height:100%;background:var(--accent);border-radius:999px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:13px}th,td{padding:11px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{color:#667085;font-size:11px;text-transform:uppercase;letter-spacing:.05em;background:#fafbfc}td.query{min-width:300px}.status{display:inline-flex;border-radius:999px;padding:4px 8px;font-size:11px;font-weight:800}.status.answered{background:var(--good-soft);color:var(--good)}.status.no_ai_result,.status.refused,.status.retrying{background:var(--warn-soft);color:var(--warn)}.status.provider_failed,.status.system_failed,.status.invalid_response{background:var(--bad-soft);color:var(--bad)}.status.scheduled,.status.queued,.status.running{background:#eef1f6;color:#667085}.empty-state{min-height:180px;display:grid;place-items:center;color:var(--muted);border:1px dashed #ccd4e0;border-radius:14px}.evidence-layout{display:grid;grid-template-columns:360px 1fr;gap:18px}.evidence-list-panel{padding:14px}.evidence-list{display:grid;gap:8px;max-height:72vh;overflow:auto}.evidence-item{border:1px solid var(--line);border-radius:10px;padding:11px;cursor:pointer}.evidence-item:hover,.evidence-item.active{border-color:var(--accent);background:var(--accent-soft)}.evidence-item strong{display:block;font-size:13px;margin:6px 0}.evidence-item small{color:var(--muted)}.evidence-detail-panel{min-height:70vh}.response-box{white-space:pre-wrap;background:#f7f8fb;border:1px solid var(--line);border-radius:12px;padding:16px;line-height:1.7}.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}.detail-chip{background:#f6f8fb;border-radius:9px;padding:10px}.detail-chip span{display:block;color:var(--muted);font-size:11px}.detail-chip strong{font-size:13px}.citation-list{display:grid;gap:8px}.citation{border:1px solid var(--line);border-radius:9px;padding:10px}.citation a{color:var(--accent);word-break:break-all}.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.result-block{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.result-block div{background:#f7f9fc;padding:13px;border-radius:10px}.result-block span{display:block;color:var(--muted);font-size:12px}.result-block strong{font-size:18px}@media(max-width:1100px){.metric-grid{grid-template-columns:repeat(3,1fr)}.grid.two,.form-grid.four{grid-template-columns:1fr 1fr}.surface-grid{grid-template-columns:1fr 1fr}.evidence-layout{grid-template-columns:1fr}.sidebar{display:none}.app-shell{grid-template-columns:1fr}}@media(max-width:700px){main{padding:0 14px 30px}.topbar{height:auto;padding:18px 0;align-items:flex-start;gap:14px;flex-direction:column}.topbar-actions{width:100%}.topbar select{min-width:0}.grid.two,.form-grid.two,.form-grid.four,.surface-grid,.metric-grid,.result-block,.detail-grid{grid-template-columns:1fr}.formula-card{align-items:flex-start;gap:8px;flex-direction:column}}
.sidebar a.nav-item{display:block;text-decoration:none}.result-block small{display:block;color:var(--muted);font-size:11px;margin-top:5px;line-height:1.35}

/* v1.2 bilingual interface */
.language-switch{display:inline-flex;align-items:center;gap:2px;padding:3px;border:1px solid #cbd3df;border-radius:10px;background:#fff;box-shadow:0 2px 8px rgba(28,45,85,.04)}
.language-switch button{min-width:38px;padding:6px 9px;border:0;border-radius:7px;background:transparent;color:var(--muted);font-size:12px;font-weight:800}
.language-switch button:hover{border:0;background:#f1f4f9;color:var(--ink)}
.language-switch button.active{background:var(--accent);color:#fff}
.checkbox-label{display:flex;grid-template-columns:auto 1fr;align-items:center;gap:9px}
.checkbox-label input{width:auto}
html[lang="en"] body{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
@media(max-width:700px){.topbar-actions{flex-wrap:wrap}.language-switch{order:-1}.topbar-actions select{flex:1;min-width:190px}}
.topbar>div:first-child{min-width:0}
.topbar-actions{flex-shrink:0}
.topbar-actions>.pill{white-space:nowrap}
.grid>*,.form-grid>*,.panel,.topbar>*{min-width:0}
.response-box,.code{max-width:100%;overflow-wrap:anywhere;word-break:break-word}
@media(max-width:700px){.panel-head,.action-row{flex-wrap:wrap}.panel{padding:16px}.grid{width:100%;min-width:0}}

/* Sign-in overlay (P0-B slice 1). Covers the page because nothing behind it
   can load without a session anyway. */
#aivi-sign-in {
  position: fixed; inset: 0; z-index: 1000; display: flex;
  align-items: center; justify-content: center;
  background: rgba(16, 24, 40, 0.72);
}
#aivi-sign-in[hidden] { display: none; }
.aivi-sign-in-card {
  background: #fff; border-radius: 10px; padding: 28px; width: min(420px, calc(100vw - 32px));
  box-shadow: 0 18px 48px rgba(16, 24, 40, 0.28);
}
.aivi-sign-in-locale { display: flex; gap: 4px; justify-content: flex-end; margin: 0 0 12px; }
.aivi-sign-in-card h2 { margin: 0 0 6px; }
.aivi-sign-in-card p { margin: 0 0 18px; color: #4a5568; font-size: 14px; }
.aivi-sign-in-card form { display: grid; gap: 14px; }
.aivi-sign-in-card label { display: grid; gap: 6px; }
.aivi-sign-in-card label span {
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; color: #4a5568;
}
.aivi-sign-in-card input {
  padding: 9px 11px; border: 1px solid #cbd5e0; border-radius: 5px; font: inherit;
}
.aivi-sign-in-card button {
  padding: 10px 16px; border: 0; border-radius: 5px; background: #1f3a5f; color: #fff;
  font: inherit; cursor: pointer;
}
.aivi-sign-in-card button[disabled] { opacity: 0.6; cursor: progress; }
.aivi-sign-in-error { color: #a12622; margin: 0; }