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Niveytha27

UI and GenAI recommendation changes for Nascent Trends section

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	<!doctype html>
	<html lang="en">
	<head>
	<meta charset="utf-8"/>
	<meta name="viewport" content="width=device-width, initial-scale=1"/>
	<title>Trend Discovery Engine</title>
	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css">
	<link rel="stylesheet" href="{{ url_for('static', filename='css/style.css') }}">
	<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1"></script>
	<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2"></script>
	<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js" crossorigin="anonymous"></script>
	</head>
	<body class="bg-body">

	<nav class="navbar navbar-expand-lg navbar-dark bg-primary shadow-sm">
	<div class="container-fluid">
	<a class="navbar-brand fw-semibold" href="#">Trend Discovery Engine</a>
	</div>
	</nav>

	<main class="container py-4">
	<ul class="nav nav-tabs" id="main-tabs" role="tablist">
	<li class="nav-item" role="presentation">
	<button class="nav-link active" id="archetypes-tab"
	data-bs-toggle="tab" data-bs-target="#archetypes"
	type="button" role="tab" aria-controls="archetypes" aria-selected="true">
	Trend Archetypes
	</button>
	</li>
	<li class="nav-item" role="presentation">
	<button class="nav-link" id="viral-topics-tab"
	data-bs-toggle="tab" data-bs-target="#viral-topics"
	type="button" role="tab" aria-controls="viral-topics" aria-selected="false">
	Viral Topics
	</button>
	</li>
	<li class="nav-item" role="presentation">
	<button class="nav-link" id="nascent-trends-tab"
	data-bs-toggle="tab" data-bs-target="#nascent-trends"
	type="button" role="tab" aria-controls="nascent-trends" aria-selected="false">
	Nascent Trends
	</button>
	</li>
	</ul>
	<div class="tab-content pt-4">
	<!-- TAB 1: Trend Archetypes -->
	<div class="tab-pane fade show active" id="archetypes" role="tabpanel" aria-labelledby="archetypes-tab">

	<div class="d-flex align-items-center mb-3">
	<h2 class="me-3 mb-0">Trend Archetypes</h2>
	</div>

	<!-- First area: Flip cards (single row, click to flip, color-coded) -->
	<div class="card mb-4">
	<div class="card-header bg-light fw-semibold">Archetype Cards</div>
	<div class="card-body">
	<div class="flip-row" id="flipRow">
	{% for c in clusters %}
	<div class="flip-card" data-archetype="{{ c.trend_archetype }}" tabindex="0" aria-label="Flip card">
	<div class="flip-card-inner">
	<!-- FRONT -->
	<div class="flip-card-front">
	<div class="flip-title">{{ c.trend_archetype }}</div>
	<div class="flip-content">
	<div class="flip-subtitle">Description</div>
	<p class="small mt-2">{{ c.description }}</p>
	</div>
	</div>
	<!-- BACK -->
	<div class="flip-card-back">
	<div class="flip-title">{{ c.trend_archetype }}</div>
	<div class="flip-content">
	<div class="flip-subtitle">Recommendation</div>
	<p class="small mt-2">{{ c.strategic_recommendation }}</p>
	</div>
	</div>
	</div>
	</div>
	{% endfor %}
	</div>
	<div class="text-muted small mt-2">Hover over a card to flip. Scroll sideways if needed.</div>
	</div>
	</div>

	<!-- Second area: Split 50/50 — Pie \| Sample videos by cluster -->
	<div class="card mb-4">
	<div class="card-header bg-light fw-semibold">Distribution & Sample Videos</div>
	<div class="card-body">
	<div class="split-2">
	<!-- Left: Pie -->
	<div class="split-2-col pe-lg-3">
	<h6 class="mb-3">Video Count by Archetype</h6>

	<!-- (remove these 2 lines if already loaded globally) -->
	<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1"></script>
	<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2"></script>

	<div class="chart-box">
	<canvas id="videoPieChart"></canvas>
	</div>

	<!-- JSON payloads for the pie (safe, no Jinja map) -->
	<script id="pieLabelsJSON" type="application/json">[
	{% for c in clusters %}"{{ c.trend_archetype\|replace('"','\\"') }}"{% if not loop.last %},{% endif %}{% endfor %}
	]</script>
	<script id="pieDataJSON" type="application/json">[
	{% for c in clusters %}{{ (c.video_count or 0)\|int }}{% if not loop.last %},{% endif %}{% endfor %}
	]</script>

	<script>
	(function(){
	const canvas = document.getElementById('videoPieChart');
	if (!canvas) return;

	const labels = JSON.parse(document.getElementById('pieLabelsJSON')?.textContent \|\| '[]');
	const values = JSON.parse(document.getElementById('pieDataJSON')?.textContent \|\| '[]');
	if (!labels.length \|\| !values.length) { console.warn('[pie] no data'); return; }

	const colorMap = {
	"Explosive Viral Hit": "rgba(248,113,113,0.65)", // red-400 @ 65%
	"Momentum Builder": "rgba(252,211,77,0.65)", // amber-300 @ 65%
	"Consistent Performer": "rgba(147,197,253,0.70)", // blue-300 @ 70%
	"Gradual Climber": "rgba(134,239,172,0.70)", // green-300 @ 70%
	"Organic Riser": "rgba(196,181,253,0.70)" // violet-300 @ 70%
	};
	const bg = labels.map(l => colorMap[l] \|\| "rgba(107,114,128,0.9)");
	const border = bg.map(c => c.replace(/0\.9\)$/, "1)"));
	const total = values.reduce((a,b)=>a+b,0);

	new Chart(canvas.getContext('2d'), {
	type: 'pie',
	plugins: [ChartDataLabels],
	data: {
	labels,
	datasets: [{ data: values, backgroundColor: bg, borderColor: border, borderWidth: 1 }]
	},
	options: {
	responsive: true,
	maintainAspectRatio: false,
	plugins: {
	datalabels: {
	color: '#000',
	font: { weight: 'bold', size: 13 },
	formatter: (v) => (total ? (v/total*100).toFixed(1) : '0.0') + '%'
	},
	legend: {
	position: 'bottom',
	labels: { boxWidth: 18, font: { size: 14 } }
	},
	tooltip: {
	callbacks: {
	label: (ctx) => {
	const label = ctx.label \|\| '';
	const val = ctx.raw ?? 0;
	const pct = total ? ((val/total)*100).toFixed(1) : '0.0';
	return `${label}: ${val.toLocaleString()} videos (${pct}%)`;
	}
	}
	},
	title: { display: false }
	}
	}
	});
	})();
	</script>
	</div>

	<div class="split-2-sep d-none d-lg-block"></div>

	<!-- Right: All sample videos, grouped by archetype -->
	<div class="split-2-col ps-lg-3">
	<h6 class="mb-3">Sample Videos by Archetype</h6>

	<div class="accordion accordion-flush" id="samplesAccordion">
	{% for c in clusters %}
	{% set type_class =
	'type-explosive' if c.trend_archetype == 'Explosive Viral Hit' else
	'type-momentum' if c.trend_archetype == 'Momentum Builder' else
	'type-consistent' if c.trend_archetype == 'Consistent Performer' else
	'type-gradual' if c.trend_archetype == 'Gradual Climber' else
	'type-organic' if c.trend_archetype == 'Organic Riser' else '' %}

	<div class="accordion-item">
	<h2 class="accordion-header" id="head-{{ loop.index }}">
	<button class="accordion-button collapsed sample-head {{ type_class }}"
	type="button"
	data-bs-toggle="collapse"
	data-bs-target="#collapse-{{ loop.index }}"
	aria-expanded="false"
	aria-controls="collapse-{{ loop.index }}">
	<span class="fw-semibold">{{ c.trend_archetype }}</span>
	<span class="ms-2 text-muted small">({{ c.sample_videos\|length }} videos)</span>
	</button>
	</h2>
	<div id="collapse-{{ loop.index }}" class="accordion-collapse collapse"
	aria-labelledby="head-{{ loop.index }}"
	data-bs-parent="#samplesAccordion">
	<div class="accordion-body p-0">
	<div class="table-responsive sample-table-wrap">
	<table class="table table-sm table-striped table-hover mb-0 align-middle sample-table compact-table">
	<thead class="table-header sticky-top">
	<tr>
	<th style="width:64px;">Thumb</th>
	<th>Title</th>
	<th class="text-end" title="Velocity 1–3 hours">V1–3h</th>
	<th class="text-end" title="Velocity 12 hours–1 day">V12h–1d</th>
	<th class="text-end" title="Velocity 1–3 days">V1–3d</th>
	<th class="text-end" title="Spike Index">Spike</th>
	</tr>
	</thead>
	<tbody>
	{% for v in c.sample_videos %}
	<tr>
	<td>
	<a href="https://www.youtube.com/watch?v={{ v.video_id }}" target="_blank" rel="noopener">
	<img class="thumb-xs" src="{{ v.thumbnail_url }}" alt="{{ v.title }}" loading="lazy">
	</a>
	</td>
	<td>
	<a class="link-dark text-decoration-none sample-title"
	href="https://www.youtube.com/watch?v={{ v.video_id }}"
	target="_blank" rel="noopener" title="{{ v.title }}">
	{{ v.title }}
	</a>
	</td>
	<td class="metric-cell">{{ ((v.velocity_1_3h or 0)\|round(0))\|int }}</td>
	<td class="metric-cell">{{ ((v.velocity_12h_1d or 0)\|round(0))\|int }}</td>
	<td class="metric-cell">{{ ((v.velocity_1d_3d or 0)\|round(0))\|int }}</td>
	<td class="metric-cell">{{ (v.spike_index or 0)\|round(2) }}</td>
	</tr>
	{% endfor %}
	</tbody>
	</table>
	</div>
	</div>
	</div>
	</div>
	{% endfor %}
	</div>

	</div>
	</div>
	</div>
	</div>

	<!-- Third area: Metrics (Table \| Line chart) with common filter -->
	<!-- ===== Area 3 JSON payloads (table + line chart) ===== -->
	<script id="metricsOrderJSON" type="application/json">
	{{ clusters \| map(attribute='trend_archetype') \| list \| tojson }}
	</script>

	<script id="metricsKeysJSON" type="application/json">
	{
	"velocity": ["velocity_1_3h","velocity_3_6h","velocity_6_12h","velocity_12h_1d","velocity_1d_3d"],
	"acceleration": ["acceleration_1_6h","acceleration_6_12h","acceleration_12h_1d","acceleration_1d_3d"],
	"engagement": ["engagement_ratio_3h","engagement_ratio_6h","engagement_ratio_1d","engagement_ratio_3d"]
	}
	</script>

	<script id="metricsKeyLabelsJSON" type="application/json">
	{
	"velocity": ["1–3h","3–6h","6–12h","12h–1d","1–3d"],
	"acceleration": ["1–6h","6–12h","12h–1d","1–3d"],
	"engagement": ["Eng 3h","Eng 6h","Eng 1d","Eng 3d"]
	}
	</script>

	<script id="metricsRowsJSON" type="application/json">[
	{% for c in clusters %}
	{
	"archetype": "{{ c.trend_archetype\|replace('"','\\"') }}",
	"velocity": [{{ c.velocity_1_3h or 0 }}, {{ c.velocity_3_6h or 0 }}, {{ c.velocity_6_12h or 0 }}, {{ c.velocity_12h_1d or 0 }}, {{ c.velocity_1d_3d or 0 }}],
	"acceleration": [{{ c.acceleration_1_6h or 0 }}, {{ c.acceleration_6_12h or 0 }}, {{ c.acceleration_12h_1d or 0 }}, {{ c.acceleration_1d_3d or 0 }}],
	"engagement": [{{ c.engagement_ratio_3h or 0 }}, {{ c.engagement_ratio_6h or 0 }}, {{ c.engagement_ratio_1d or 0 }}, {{ c.engagement_ratio_3d or 0 }}]
	}{% if not loop.last %},{% endif %}
	{% endfor %}
	]</script>

	<div class="card mb-4" id="area3-metrics">
	<div class="card-header bg-light d-flex justify-content-between align-items-center">
	<span class="fw-semibold">Cluster Summary Metrics</span>

	<div class="d-flex align-items-center gap-2">
	<label for="metricGroupSelect" class="small text-muted mb-0">Metrics:</label>
	<select id="metricGroupSelect" class="form-select form-select-sm" style="min-width: 180px;">
	<option value="velocity" selected>Velocity</option>
	<option value="acceleration">Acceleration</option>
	<option value="engagement">Engagement</option>
	</select>
	</div>
	</div>

	<div class="card-body">
	<div class="split-2">
	<!-- Left: Table -->
	<div class="split-2-col pe-lg-3">
	<h6 id="metricsTableTitle" class="mb-2">Velocity Metrics by Archetype</h6>
	<div class="table-responsive sample-table-wrap">
	<table id="metricsTable" class="table table-sm table-striped table-hover mb-0 align-middle compact-table">
	<tbody><tr><td class="text-muted">Loading…</td></tr></tbody>
	</table>
	</div>
	</div>

	<div class="split-2-sep d-none d-lg-block"></div>

	<!-- Right: Line chart -->
	<div class="split-2-col ps-lg-3">
	<h6 id="metricsChartTitle" class="mb-2">Velocity Metrics Trend</h6>
	<div class="linechart-box">
	<canvas id="metricsLineChart"></canvas>
	</div>
	<div id="metricsChartNotice" class="small text-muted mt-2" style="display:none;"></div>
	</div>
	</div>
	</div>
	</div>

	<script>
	(function metricsAreaJSON(){
	const sel = document.getElementById('metricGroupSelect');
	const tbl = document.getElementById('metricsTable');
	const tHdr = document.getElementById('metricsTableTitle');
	const cHdr = document.getElementById('metricsChartTitle');
	const cvs = document.getElementById('metricsLineChart');
	if (!sel \|\| !tbl) return;

	const parseJSON = (id, fallback) => {
	const el = document.getElementById(id);
	if (!el) return fallback;
	try { return JSON.parse(el.textContent \|\| JSON.stringify(fallback)); }
	catch { return fallback; }
	};

	// payloads
	const ORDER = parseJSON('metricsOrderJSON', []);
	const KEYS = parseJSON('metricsKeysJSON', {});
	const KEYLABELS = parseJSON('metricsKeyLabelsJSON', {});
	const ROWS = parseJSON('metricsRowsJSON', []);

	// desired visual order
	const DESIRED = ["Explosive Viral Hit","Momentum Builder","Consistent Performer","Gradual Climber","Organic Riser"];
	const FILL = {
	"Explosive Viral Hit":"rgba(248,113,113,0.65)",
	"Momentum Builder":"rgba(252,211,77,0.65)",
	"Consistent Performer":"rgba(147,197,253,0.70)",
	"Gradual Climber":"rgba(134,239,172,0.70)",
	"Organic Riser":"rgba(196,181,253,0.70)"
	};
	const STROKE = {
	"Explosive Viral Hit":"#ef4444",
	"Momentum Builder":"#f59e0b",
	"Consistent Performer":"#3b82f6",
	"Gradual Climber":"#10b981",
	"Organic Riser":"#8b5cf6"
	};

	// order rows consistently
	const byName = Object.fromEntries(ROWS.map(r => [r.archetype, r]));
	const rowsOrdered = DESIRED.map(n => byName[n]).filter(Boolean)
	.concat(ORDER.filter(n => !DESIRED.includes(n)).map(n => byName[n]).filter(Boolean));

	const fmt = (v) => (typeof v === 'number'
	? (Math.abs(v)>=1000 ? Math.round(v).toLocaleString()
	: Math.round(v*100)/100)
	: '-');

	function renderTable(group){
	const keys = KEYS[group] \|\| [];
	let html = `<thead class="table-header sticky-top"><tr><th>Archetype</th>`;
	(KEYLABELS[group] \|\| keys).forEach(l => html += `<th class="text-end">${l}</th>`);
	html += `</tr></thead><tbody>`;
	if (!rowsOrdered.length){
	html += `<tr><td colspan="${keys.length+1}" class="text-muted">No cluster data.</td></tr>`;
	} else {
	rowsOrdered.forEach(r => {
	html += `<tr><td class="fw-semibold">${r.archetype}</td>`;
	(r[group] \|\| []).forEach(v => { html += `<td class="metric-cell">${fmt(v)}</td>`; });
	html += `</tr>`;
	});
	}
	html += `</tbody>`;
	tbl.innerHTML = html;
	if (tHdr) tHdr.textContent = `${group[0].toUpperCase()+group.slice(1)} Metrics by Archetype`;
	}

	let chart = null;
	function renderChart(group){
	if (!cvs \|\| typeof Chart === 'undefined') return;
	const labels = KEYLABELS[group] \|\| KEYS[group] \|\| [];
	const datasets = rowsOrdered.map(r => ({
	label: r.archetype,
	data: (r[group] \|\| []).map(v => (typeof v === 'number' ? v : null)),
	borderColor: STROKE[r.archetype] \|\| '#6b7280',
	backgroundColor: FILL[r.archetype] \|\| 'rgba(156,163,175,0.35)',
	tension: 0.25, borderWidth: 2, pointRadius: 3, pointHoverRadius: 5, spanGaps: true
	}));
	if (chart) chart.destroy();
	chart = new Chart(cvs.getContext('2d'), {
	type: 'line',
	data: { labels, datasets },
	options: {
	responsive: true, maintainAspectRatio: false,
	interaction: { mode: 'index', intersect: false },
	scales: {
	x: { ticks: { autoSkip: false } },
	y: {
	beginAtZero: false,
	ticks: { callback: (v) => (Math.abs(v)>=1000 ? Math.round(v).toLocaleString() : v) },
	grid: { color: 'rgba(0,0,0,0.06)' }
	}
	},
	plugins: {
	legend: { position: 'top' },
	tooltip: {
	callbacks: {
	label: (ctx) => `${ctx.dataset.label}: ${typeof ctx.parsed.y==='number' ? ctx.parsed.y.toLocaleString() : '-'}`
	}
	}
	}
	}
	});
	if (cHdr) cHdr.textContent = `${group[0].toUpperCase()+group.slice(1)} Metrics Trend`;
	}

	function update(){
	const g = sel.value \|\| 'velocity';
	renderTable(g);
	renderChart(g);
	}
	sel.addEventListener('change', update);
	update();
	})();
	</script>

	<!-- ===== Data bootstrap (must be BEFORE the section JS) ===== -->
	<script id="clustersJSON" type="application/json">
	{{ (clusters \| default([], true)) \| tojson \| safe }}
	</script>
	<script>
	// Make clusters available to the section JS
	window.clustersData = [];
	try {
	window.clustersData = JSON.parse(document.getElementById('clustersJSON').textContent \|\| '[]');
	console.info('[bootstrap] clustersData length =', window.clustersData.length);
	} catch (e) {
	console.error('[bootstrap] failed to parse clustersJSON', e);
	}
	</script>

	<!-- Chart libs (remove if already included globally) -->
	<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1"></script>
	<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2"></script>

	<!-- Archetypes section JS -->
	<script src="{{ url_for('static', filename='js/archetypes_section.js') }}"></script>
	</div>

	<!-- TAB 2: Viral Topics -->
	<div class="tab-pane fade" id="viral-topics" role="tabpanel" aria-labelledby="viral-topics-tab">
	<!-- Toolbar: single-select archetype chips -->
	<div class="card mb-3">
	<div class="card-body">
	<label class="form-label small mb-2">Choose Archetype</label>
	<div id="vt-archetype-chips" class="d-flex flex-wrap gap-2"></div>
	<div id="vt-chip-hint" class="text-muted small mt-1">Showing top 3 topics by Viral Score.</div>
	</div>
	</div>

	<!-- Main card: Top 3 topics + Radar + Sample Videos -->
	<div class="card">
	<div class="card-header bg-light fw-semibold d-flex align-items-center justify-content-between">
	<span>Top Topics</span>
	<span id="vt-archetype-badge" class="badge rounded-pill text-dark" style="display:none;">Archetype</span>
	</div>
	<div class="card-body">

	<!-- Top 3 topic metric cards -->
	<div id="vt-topcards" class="row g-3 mb-3">
	<!-- rendered by JS -->
	</div>

	<!-- Radar: overlay of 3 topics -->
	<div class="mb-3">
	<h6 class="mb-2">Signal Profile (Top 3)</h6>
	<div style="position:relative; height:380px;">
	<canvas id="vt-radar"></canvas>
	</div>
	</div>

	<!-- Sample videos: tabs per topic -->
	<div class="mt-3">
	<ul id="vt-tabs" class="nav nav-tabs"></ul>
	<div id="vt-tabpanes" class="tab-content border-start border-end border-bottom p-3" style="max-height: 420px; overflow:auto;">
	<!-- rendered by JS -->
	</div>
	</div>

	<!-- Empty state -->
	<div id="vt-empty" class="text-muted small" style="display:none;">No topics available for this archetype.</div>
	</div>
	</div>

	<!-- ===== JSON payloads ===== -->
	{% set _topics = (
	viral_topics
	if viral_topics is defined
	else (data['section_2_Viral_Topics'] if data is defined and 'section_2_Viral_Topics' in data else [])
	) %}

	<script id="topicsJSON" type="application/json">
	{{ (_topics \| default([], true)) \| tojson \| safe }}
	</script>

	<script id="archetypeOrderJSON" type="application/json">
	["Explosive Viral Hit","Momentum Builder","Consistent Performer","Gradual Climber","Organic Riser"]
	</script>

	<script id="archetypeColorsJSON" type="application/json">
	{
	"Explosive Viral Hit": {"fill":"#F87171","chip":"#FECACA","text":"#111827"},
	"Momentum Builder": {"fill":"#FCD34D","chip":"#FDE68A","text":"#111827"},
	"Consistent Performer":{"fill":"#93C5FD","chip":"#BFDBFE","text":"#111827"},
	"Gradual Climber": {"fill":"#86EFAC","chip":"#BBF7D0","text":"#111827"},
	"Organic Riser": {"fill":"#C4B5FD","chip":"#DDD6FE","text":"#111827"}
	}
	</script>

	<script id="topicSignalsKeysJSON" type="application/json">
	["z_velocity_1_3h","z_velocity_3_6h","z_acceleration_1_6h","z_engagement_ratio_1d","z_like_comment_ratio_1d","z_spike_index","z_view_growth_std"]
	</script>

	<!-- Chart.js (skip if already loaded globally) -->
	<script src="https://cdn.jsdelivr.net/npm/chart.js@4.4.1"></script>

	<!-- JS for this tab -->
	<script>
	(function ready(fn){
	document.readyState !== "loading" ? fn() : document.addEventListener("DOMContentLoaded", fn);
	})(() => {
	const ROOT = document.getElementById("viral-topics");
	if (!ROOT) return; // tab not on this page

	// Use ROOT.querySelector instead of document.getElementById
	const q = (sel) => ROOT.querySelector(sel);

	const chipsWrap = document.getElementById("vt-archetype-chips");
	const badgeEl = document.getElementById("vt-archetype-badge");
	const topCards = document.getElementById("vt-topcards");
	const radarCv = document.getElementById("vt-radar");
	const tabsEl = document.getElementById("vt-tabs");
	const panesEl = document.getElementById("vt-tabpanes");
	const emptyEl = document.getElementById("vt-empty");
	if (!chipsWrap \|\| !topCards \|\| !radarCv \|\| !tabsEl \|\| !panesEl) return;

	// ----- JSON -----
	const parseJSON = (id, fallback) => {
	const el = document.getElementById(id);
	if (!el) return fallback;
	try { return JSON.parse(el.textContent \|\| JSON.stringify(fallback)); }
	catch { return fallback; }
	};
	const RAW_TOPICS = parseJSON("topicsJSON", []);
	const ORDER = parseJSON("archetypeOrderJSON", []);
	const COLORS = parseJSON("archetypeColorsJSON", {});
	const SIGNAL_KEYS = parseJSON("topicSignalsKeysJSON", []);

	// ----- Normalize -----
	const titleCase = (s) => (s \|\| "").replace(/_/g, " ").replace(/\b\w/g, c => c.toUpperCase());
	const topics = RAW_TOPICS.map(t => ({
	archetype: t.trend_archetype_cluster \|\| "",
	topic_name: t.topic_name \|\| "",
	display_name: titleCase(t.topic_name \|\| ""),
	video_count: Number(t.video_count \|\| 0),
	median_views_3d: Number(t.median_views_3d \|\| 0),
	virality_consistency: Number(t.virality_consistency \|\| 0),
	topic_viral_score: Number(t.topic_viral_score \|\| 0),
	signals: t.signals \|\| {},
	genai_summary: t.genai_summary \|\| "",
	sample_videos: Array.isArray(t.sample_videos) ? t.sample_videos : []
	}));

	// By archetype
	const byArch = ORDER.reduce((acc, name) => (acc[name] = [], acc), {});
	topics.forEach(t => { if (byArch[t.archetype]) byArch[t.archetype].push(t); });

	// ----- State -----
	let selectedArch = ORDER.find(a => (byArch[a] && byArch[a].length)) \|\| ORDER[0];

	// ----- Utils -----
	const metric = (v) => (typeof v === "number" && !Number.isNaN(v)
	? (v >= 1000 ? Math.round(v).toLocaleString() : Math.round(v * 100) / 100)
	: "–");

	function hexToRgb(hex){
	const m = (hex\|\|"").replace('#','').match(/^([a-f\d]{3}\|[a-f\d]{6})$/i);
	if(!m) return {r:147,g:197,b:253};
	const h = m[1].length===3 ? m[1].split('').map(c=>c+c).join('') : m[1];
	return { r: parseInt(h.substr(0,2),16), g: parseInt(h.substr(2,2),16), b: parseInt(h.substr(4,2),16) };
	}
	const withAlpha = (hex, a=0.35) => {
	const {r,g,b} = hexToRgb(hex); return `rgba(${r},${g},${b},${a})`;
	};
	const lighten = (hex, amt=0.2) => {
	const {r,g,b} = hexToRgb(hex);
	const L = (c)=>Math.round(c + (255-c)*amt);
	return `rgb(${L(r)},${L(g)},${L(b)})`;
	};

	// ----- Chips (single-select) -----
	function renderChips(){
	chipsWrap.innerHTML = ORDER.map(name => {
	const color = COLORS[name]?.chip \|\| "#f3f4f6";
	const text = COLORS[name]?.text \|\| "#111827";
	const active = (name === selectedArch);
	return `
	<button type="button" class="btn btn-sm"
	data-arch="${name}"
	style="background:${active? color : 'transparent'}; color:${text};
	border:1px solid rgba(0,0,0,.12); ${active ? 'box-shadow: inset 0 0 0 1px rgba(0,0,0,.12);' : ''}">
	${name}
	</button>`;
	}).join("");

	chipsWrap.querySelectorAll('button[data-arch]').forEach(btn => {
	btn.addEventListener('click', () => {
	selectedArch = btn.getAttribute('data-arch');
	renderChips();
	renderAll();
	});
	});
	}

	// ----- Top 3 selection -----
	function top3For(archetype){
	const rows = (byArch[archetype] \|\| []).slice()
	.sort((a,b) => b.topic_viral_score - a.topic_viral_score);
	return rows.slice(0,3);
	}

	// ----- Render metric cards -----
	function renderCards(top3){
	if (!top3.length){
	topCards.innerHTML = "";
	emptyEl.style.display = "";
	return;
	}
	emptyEl.style.display = "none";
	topCards.innerHTML = top3.map((t,i)=>`
	<div class="col-12 col-md-6 col-xl-4">
	<div class="border rounded h-100 p-3">
	<div class="d-flex align-items-start justify-content-between">
	<div class="fw-semibold">${t.display_name}</div>
	<span class="badge bg-light text-dark">#${i+1}</span>
	</div>
	${t.genai_summary ? `<div class="text-muted small mt-1 text-truncate-2" title="${t.genai_summary.replace(/"/g,'"')}">${t.genai_summary}</div>` : ``}
	<div class="row g-2 mt-2">
	<div class="col-6"><div class="small text-muted">Viral Score</div><div class="fw-bold">${metric(t.topic_viral_score)}</div></div>
	<div class="col-6"><div class="small text-muted">Consistency</div><div class="fw-bold">${metric(t.virality_consistency)}</div></div>
	<div class="col-6"><div class="small text-muted">Median Views (3d)</div><div class="fw-bold">${metric(t.median_views_3d)}</div></div>
	<div class="col-6"><div class="small text-muted">Videos</div><div class="fw-bold">${t.video_count?.toLocaleString?.() \|\| t.video_count}</div></div>
	</div>
	</div>
	</div>
	`).join("");
	}

	// ----- Radar: 3 datasets -----
	let radarChart = null;
	function renderRadar(top3){
	if (radarChart) { radarChart.destroy(); radarChart = null; }
	if (!top3.length) return;
	const base = COLORS[selectedArch]?.fill \|\| "#93C5FD";
	const c1 = base;
	const c2 = lighten(base, 0.18);
	const c3 = lighten(base, 0.36);

	const dsColors = [c1,c2,c3];
	const datasets = top3.map((t, idx) => ({
	label: t.display_name,
	data: SIGNAL_KEYS.map(k => Number(t.signals?.[k] ?? 0)),
	borderColor: dsColors[idx],
	backgroundColor: withAlpha(dsColors[idx], 0.25),
	borderWidth: 2,
	pointRadius: 2
	}));

	const labels = SIGNAL_KEYS.map(k => k.replace(/^z_/, "").replace(/_/g," ").toUpperCase());
	radarChart = new Chart(radarCv.getContext("2d"), {
	type: "radar",
	data: { labels, datasets },
	options: {
	responsive: true, maintainAspectRatio: false,
	scales: {
	r: {
	angleLines: { color: "rgba(0,0,0,.08)" },
	grid: { color: "rgba(0,0,0,.08)" },
	suggestedMin: -1.5, suggestedMax: 2.5,
	ticks: { backdropColor: "transparent" }
	}
	},
	plugins: { legend: { position: "top" } }
	}
	});
	}

	// ----- Sample videos: tabs per topic -----
	function renderTabs(top3){
	if (!top3.length){
	tabsEl.innerHTML = "";
	panesEl.innerHTML = "";
	return;
	}
	tabsEl.innerHTML = top3.map((t, i) => `
	<li class="nav-item" role="presentation">
	<button class="nav-link ${i===0?'active':''}" id="tab-${i}"
	data-bs-toggle="tab" data-bs-target="#pane-${i}" type="button"
	role="tab" aria-controls="pane-${i}" aria-selected="${i===0}">
	${t.display_name}
	</button>
	</li>
	`).join("");

	panesEl.innerHTML = top3.map((t, i) => `
	<div class="tab-pane fade ${i===0?'show active':''}" id="pane-${i}" role="tabpanel" aria-labelledby="tab-${i}">
	${renderVideosTable(t)}
	</div>
	`).join("");
	}

	function renderVideosTable(topic){
	if (!topic.sample_videos.length){
	return `<div class="text-muted small">No sample videos for this topic.</div>`;
	}
	const rows = topic.sample_videos.map(v => {
	const views = Number(v.viewCount_3d \|\| 0);
	const eng = Number(v.engagement_ratio_1d \|\| 0);
	const spike = Number(v.spike_index \|\| 0);
	return `
	<tr>
	<td style="width:64px;">
	<a href="https://www.youtube.com/watch?v=${v.video_id}" target="_blank" rel="noopener">
	<img src="${v.thumbnail_url}" alt="${(v.title\|\|'').replace(/"/g,'"')}"
	loading="lazy" style="width:56px;height:32px;object-fit:cover;border-radius:6px;border:1px solid #e5e7eb;">
	</a>
	</td>
	<td>
	<a class="link-dark text-decoration-none"
	href="https://www.youtube.com/watch?v=${v.video_id}" target="_blank" rel="noopener"
	title="${(v.title\|\|'').replace(/"/g,'"')}">
	${v.title \|\| "(untitled)"}
	</a>
	</td>
	<td class="text-end">${views >= 1000 ? Math.round(views).toLocaleString() : Math.round(views*100)/100}</td>
	<td class="text-end">${Math.round(eng*100)/100}</td>
	<td class="text-end">${Math.round(spike*100)/100}</td>
	</tr>
	`;
	}).join("");

	return `
	<div class="table-responsive">
	<table class="table table-sm table-striped table-hover align-middle mb-0">
	<thead class="table-light sticky-top" style="top:0; z-index:1;">
	<tr>
	<th style="width:64px;">Thumb</th>
	<th>Title</th>
	<th class="text-end">Views (3d)</th>
	<th class="text-end">Eng. (1d)</th>
	<th class="text-end">Spike</th>
	</tr>
	</thead>
	<tbody>${rows}</tbody>
	</table>
	</div>`;
	}

	// ----- Header badge -----
	function renderBadge(){
	const cfg = COLORS[selectedArch] \|\| {};
	badgeEl.textContent = selectedArch;
	badgeEl.style.display = "inline-block";
	badgeEl.style.background = cfg.chip \|\| "#f3f4f6";
	badgeEl.style.color = cfg.text \|\| "#111827";
	badgeEl.style.border = "1px solid rgba(0,0,0,.12)";
	}

	// ----- Master render -----
	function renderAll(){
	renderBadge();
	const top3 = top3For(selectedArch);
	renderCards(top3);
	renderRadar(top3);
	renderTabs(top3);
	}

	// init
	renderChips();
	renderAll();
	});

	</script>
	</div>

	<!-- TAB 3: Nascent Trends -->
	<div class="tab-pane fade" id="nascent-trends" role="tabpanel" aria-labelledby="nascent-trends-tab">

	<!-- Sub-tabs header -->
	<div class="card mb-3">
	<div class="card-body py-2">
	<ul class="nav nav-pills gap-2 subtabs" id="nascent-subtabs" role="tablist">
	<li class="nav-item" role="presentation">
	<button class="nav-link active" id="nt-subtab"
	data-bs-toggle="tab" data-bs-target="#nt-pane"
	type="button" role="tab" aria-controls="nt-pane" aria-selected="true">
	Nascent Topics
	</button>
	</li>
	<li class="nav-item" role="presentation">
	<button class="nav-link" id="nv-subtab"
	data-bs-toggle="tab" data-bs-target="#nv-pane"
	type="button" role="tab" aria-controls="nv-pane" aria-selected="false">
	Nascent Videos
	</button>
	</li>
	</ul>
	</div>
	</div>

	<!-- Sub-tabs content -->
	<div class="tab-content">

	<!-- ========== Sub-tab A: Nascent Topics ========== -->
	<div class="tab-pane fade show active" id="nt-pane" role="tabpanel" aria-labelledby="nt-subtab">
	<div class="card mb-4">
	<div class="card-header bg-light fw-semibold">Nascent Topics</div>
	<div class="card-body p-3 p-lg-4">

	<!-- Headline + executive summary (full width) -->
	<div class="nt-block mb-3">
	<h5 id="nt-headline" class="mb-2">–</h5>
	<p id="nt-exec" class="nt-summary mb-0">–</p>
	</div>

	<!-- Accent cards row -->
	<div class="row g-3 mb-4">
	<div class="col-12 col-lg-4">
	<div class="card card-accent card-accent--indigo h-100">
	<div class="card-header">Key Insights</div>
	<div class="card-body"><ul id="nt-insights" class="list-tight mb-0"></ul></div>
	</div>
	</div>
	<div class="col-12 col-lg-4">
	<div class="card card-accent card-accent--emerald h-100">
	<div class="card-header">Recommended Actions</div>
	<div class="card-body"><ul id="nt-actions" class="list-tight mb-0"></ul></div>
	</div>
	</div>
	<div class="col-12 col-lg-4">
	<div class="card card-accent card-accent--rose h-100">
	<div class="card-header">Risks & Watchouts</div>
	<div class="card-body"><ul id="nt-risks" class="list-tight mb-0"></ul></div>
	</div>
	</div>
	</div>

	<!-- Priority Topics -->
	<h6 class="subtitle mb-2">Priority Topics</h6>
	<div class="table-wrap shadow-sm rounded-3 mb-4">
	<table class="table table-sm align-middle mb-0">
	<thead class="table-light">
	<tr><th>Topic</th><th>Why Priority</th></tr>
	</thead>
	<tbody id="nt-priority"></tbody>
	</table>
	</div>

	<!-- All Topics (metrics) -->
	<h6 class="subtitle mb-2">All Topics — Metrics</h6>
	<div class="table-wrap shadow-sm rounded-3">
	<table class="table table-sm table-striped table-hover align-middle mb-0">
	<thead class="table-light sticky-top" style="top:0;z-index:1;">
	<tr>
	<th>Topic</th>
	<th class="text-end">Videos</th>
	<th class="text-end">Early Burst (med)</th>
	<th class="text-end">Growth Ratio (med)</th>
	<th class="text-end">Eng. Quality (med)</th>
	<th class="text-end">Low Exposure (med)</th>
	</tr>
	</thead>
	<tbody id="nt-rows">
	<tr><td colspan="6" class="text-muted">No nascent topics.</td></tr>
	</tbody>
	</table>
	</div>
	</div>
	</div>
	</div>

	<!-- ========== Sub-tab B: Nascent Videos ========== -->
	<div class="tab-pane fade" id="nv-pane" role="tabpanel" aria-labelledby="nv-subtab">
	<div class="card">
	<div class="card-header bg-light fw-semibold">Nascent Videos</div>
	<div class="card-body p-3 p-lg-4">

	<!-- Headline + executive summary (full width) -->
	<div class="nt-block mb-3">
	<h5 id="nv-headline" class="mb-2">–</h5>
	<p id="nv-exec" class="nt-summary mb-0">–</p>
	</div>

	<!-- Accent cards row -->
	<div class="row g-3 mb-4">
	<div class="col-12 col-lg-4">
	<div class="card card-accent card-accent--sky h-100">
	<div class="card-header">Momentum Patterns</div>
	<div class="card-body"><ul id="nv-insights" class="list-tight mb-0"></ul></div>
	</div>
	</div>
	<div class="col-12 col-lg-4">
	<div class="card card-accent card-accent--amber h-100">
	<div class="card-header">Strategic Recommendations</div>
	<div class="card-body"><ul id="nv-actions" class="list-tight mb-0"></ul></div>
	</div>
	</div>
	<div class="col-12 col-lg-4">
	<div class="card card-accent card-accent--rose h-100">
	<div class="card-header">Risks & Watchouts</div>
	<div class="card-body"><ul id="nv-risks" class="list-tight mb-0"></ul></div>
	</div>
	</div>
	</div>

	<!-- Priority Videos -->
	<h6 class="subtitle mb-2">Priority Videos</h6>
	<div class="table-wrap shadow-sm rounded-3 mb-4">
	<table class="table table-sm align-middle mb-0">
	<thead class="table-light">
	<tr><th>Title</th><th>Why</th></tr>
	</thead>
	<tbody id="nv-priority"></tbody>
	</table>
	</div>

	<!-- All Nascent Videos (metrics) -->
	<h6 class="subtitle mb-2">All Nascent Videos — Metrics</h6>
	<div class="table-wrap shadow-sm rounded-3">
	<table class="table table-sm table-striped table-hover align-middle mb-0">
	<thead class="table-light sticky-top" style="top:0;z-index:1;">
	<tr>
	<th style="width:64px;">Thumb</th>
	<th>Title</th>
	<th class="text-end">Score</th>
	<th class="text-end">Early Burst</th>
	<th class="text-end">Growth Ratio</th>
	<th class="text-end">Eng. Quality</th>
	<th class="text-end">Low Exposure</th>
	<th class="text-end">Views (3d)</th>
	<th class="text-end">Eng. (1d)</th>
	<th class="text-end">Topic</th>
	<th>Category</th>
	</tr>
	</thead>
	<tbody id="nv-rows">
	<tr><td colspan="11" class="text-muted">No nascent videos.</td></tr>
	</tbody>
	</table>
	</div>
	</div>
	</div>
	</div>

	</div> <!-- /.tab-content (subtabs) -->


	<!-- ===== JSON payloads (Nascent Trends) ===== -->
	{% set _nascent = (
	data['section_3_Nascent_Trends']
	if data is defined and 'section_3_Nascent_Trends' in data
	else {}
	) %}

	{% set _nt_summary = (
	nt_summary
	if nt_summary is defined
	else _nascent.get('Nascent_Topics_summary', {})
	) %}

	{% set _nv_summary = (
	nv_summary
	if nv_summary is defined
	else _nascent.get('Nascent_Videos_summary', {})
	) %}

	{% set _nt_list = (
	nt_list
	if nt_list is defined
	else _nt_summary.get('Nascent_Topics', [])
	) %}

	{% set _nv_list = (
	nv_list
	if nv_list is defined
	else _nv_summary.get('Nascent_Videos', [])
	) %}

	<!-- Keep IDs aligned with nascent_section.js -->
	<script id="ntSummaryJSON" type="application/json">
	{{ (_nt_summary \| default({}, true)) \| tojson \| safe }}
	</script>

	<script id="nvSummaryJSON" type="application/json">
	{{ (_nv_summary \| default({}, true)) \| tojson \| safe }}
	</script>

	<script id="nascentTopicsJSON" type="application/json">
	{{ (_nt_list \| default([], true)) \| tojson \| safe }}
	</script>

	<script id="nascentVideosJSON" type="application/json">
	{{ (_nv_list \| default([], true)) \| tojson \| safe }}
	</script>
	<!-- Section 3 JS -->
	<script>
	(function ready(fn){document.readyState!=="loading"?fn():document.addEventListener("DOMContentLoaded",fn);})(() => {
	const PANES = Array.from(document.querySelectorAll('#nascent-trends'));
	const ROOT = PANES.find(p => p.querySelector('#ntSummaryJSON')) \|\| PANES[0] \|\| document;
	const q = (sel) => ROOT.querySelector(sel) \|\| document.querySelector(sel);
	const getJSON = (id, fb=[]) => {
	const el = ROOT.querySelector('#'+id) \|\| document.getElementById(id);
	if (!el) return Array.isArray(fb)?[]:(typeof fb==='object'?{}:fb);
	try { return JSON.parse(el.textContent); } catch { return Array.isArray(fb)?[]:(typeof fb==='object'?{}:fb); }
	};

	// nodes
	const ntHeadline=q('#nt-headline'), ntExec=q('#nt-exec'), ntRows=q('#nt-rows');
	const ntInsights=q('#nt-insights'), ntActions=q('#nt-actions'), ntRisks=q('#nt-risks'), ntPriority=q('#nt-priority');

	const nvHeadline=q('#nv-headline'), nvExec=q('#nv-exec'), nvRows=q('#nv-rows');
	const nvInsights=q('#nv-insights'), nvActions=q('#nv-actions'), nvRisks=q('#nv-risks'), nvPriorityTb=q('#nv-priority');

	// data
	const ntSummary=getJSON('ntSummaryJSON',{}), nvSummary=getJSON('nvSummaryJSON',{});
	const ntList=getJSON('nascentTopicsJSON',[]), nvList=getJSON('nascentVideosJSON',[]);

	// helpers
	const setText=(el,txt)=>{ if(el) el.textContent=(txt??'–'); };
	const liList=(el,arr)=>{ if(!el) return; const a=Array.isArray(arr)?arr:[]; el.innerHTML=a.length?a.map(s=>`<li>${s}</li>`).join(''):`<li class="text-muted">–</li>`; };
	const n2=(v)=>Number.isFinite(+v)?Math.round(+v*100)/100:'–';
	const i0=(v)=>Number.isFinite(+v)?Math.round(+v).toLocaleString():'–';
	const esc=(s)=>String(s\|\|'').replace(/"/g,'"');

	const asList = (v) =>
	Array.isArray(v) ? v.filter(Boolean)
	: (typeof v === 'string' && v.trim() ? [v.trim()] : []);

	// Headlines + executive summaries (unchanged)
	setText(ntHeadline, ntSummary.summary_headline \|\| 'Nascent Content Trends');
	setText(ntExec, ntSummary.executive_summary \|\| '');
	setText(nvHeadline, nvSummary.summary_headline \|\| 'Nascent Videos');
	setText(nvExec, nvSummary.executive_summary \|\| '');

	// Accent cards
	liList(ntInsights, ntSummary.key_insights \|\| []);
	liList(ntActions, ntSummary.recommended_actions \|\| []);
	liList(ntRisks, ntSummary.risks_watchouts \|\| []);

	// Accent cards — Nascent Videos
	const nvPatterns = asList(nvSummary.momentum_patterns \|\| nvSummary.momentum_insights \|\| nvSummary.patterns);
	const nvRecs = asList(nvSummary.strategic_recommendations \|\| nvSummary.creative_playbook \|\| nvSummary.recommendations \|\| nvSummary.actions);
	const nvRisksArr = asList(nvSummary.risks_watchouts \|\| nvSummary.risk_watchouts \|\| nvSummary.risks \|\| nvSummary.watchouts);

	liList(nvInsights, nvPatterns);
	liList(nvActions, nvRecs);
	liList(nvRisks, nvRisksArr);

	// Priority Topics table
	if(ntPriority){
	const pr = Array.isArray(ntSummary.priority_topics)?ntSummary.priority_topics:[];
	ntPriority.innerHTML = pr.length ? pr.map(t=>{
	return `<tr><td>${esc(t?.topic_name)}</td><td>${esc(t?.why_priority)}</td></tr>`;
	}).join('') : `<tr><td colspan="2" class="text-muted">–</td></tr>`;
	}

	// All Topics metrics
	if(ntRows){
	const rows=(ntList\|\|[]).slice()
	.sort((a,b)=>(b.median_growth_ratio\|\|0)-(a.median_growth_ratio\|\|0))
	.map(t=>`
	<tr>
	<td>${esc(t.topic_name)}</td>
	<td class="text-end">${i0(t.n_videos)}</td>
	<td class="text-end">${n2(t.median_early_burst)}</td>
	<td class="text-end">${n2(t.median_growth_ratio)}</td>
	<td class="text-end">${n2(t.median_engagement_quality)}</td>
	<td class="text-end">${n2(t.median_low_exposure)}</td>
	</tr>`).join('');
	ntRows.innerHTML = rows \|\| `<tr><td colspan="6" class="text-muted">No nascent topics.</td></tr>`;
	}

	// Priority Videos table (from exemplar_highlights)
	if(nvPriorityTb){
	const ex = Array.isArray(nvSummary.exemplar_highlights)?nvSummary.exemplar_highlights:[];
	nvPriorityTb.innerHTML = ex.length ? ex.map(e=>{
	const title=esc(e?.title);
	const why =esc(e?.why_nascent \|\| e?.why);
	const href = e?.video_id ? `https://www.youtube.com/watch?v=${e.video_id}` : null;
	const tcell= href ? `<a class="link-dark text-decoration-none" href="${href}" target="_blank" rel="noopener">${title}</a>` : title;
	return `<tr><td>${tcell}</td><td>${why}</td></tr>`;
	}).join('') : `<tr><td colspan="2" class="text-muted">–</td></tr>`;
	}

	// All Videos metrics
	if(nvRows){
	const rows=(nvList\|\|[]).slice()
	.sort((a,b)=>(b.nascent_video_score\|\|0)-(a.nascent_video_score\|\|0))
	.map(v=>{
	const title=esc(v.title);
	const href = v.video_id?`https://www.youtube.com/watch?v=${v.video_id}`:null;
	const thumb=v.thumbnail_url?`<img src="${v.thumbnail_url}" alt="${title}" loading="lazy" style="width:56px;height:32px;object-fit:cover;border-radius:6px;border:1px solid #e5e7eb;">`:'';
	const tcell=href?`<a class="link-dark text-decoration-none" href="${href}" target="_blank" rel="noopener" title="${title}">${title\|\|'(untitled)'}</a>`:(title\|\|'(untitled)');
	return `<tr>
	<td style="width:64px;">${href?`<a href="${href}" target="_blank" rel="noopener">${thumb}</a>`:thumb}</td>
	<td>${tcell}</td>
	<td class="text-end">${n2(v.nascent_video_score)}</td>
	<td class="text-end">${n2(v.early_burst)}</td>
	<td class="text-end">${n2(v.growth_ratio)}</td>
	<td class="text-end">${n2(v.engagement_quality)}</td>
	<td class="text-end">${n2(v.low_exposure)}</td>
	<td class="text-end">${i0(v.viewCount_3d)}</td>
	<td class="text-end">${n2(v.engagement_ratio_1d)}</td>
	<td class="text-end">${(typeof v.bertopic_topic==='number'\|\|typeof v.bertopic_topic==='string')?v.bertopic_topic:'–'}</td>
	<td>${esc(v.primary_content_category)}</td>
	</tr>`;
	}).join('');
	nvRows.innerHTML = rows \|\| `<tr><td colspan="11" class="text-muted">No nascent videos.</td></tr>`;
	}
	});
	</script>
	</div>
	</div>
	</main>

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