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335 lines
10 KiB
HTML
335 lines
10 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=1280, height=720" />
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<script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
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<style>
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* {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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html,
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body {
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margin: 0;
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width: 1280px;
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height: 720px;
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overflow: hidden;
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background: #000;
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font-family: "Inter", system-ui, sans-serif;
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}
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#a-roll,
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#fg-overlay {
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position: absolute;
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inset: 0;
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width: 100%;
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height: 100%;
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object-fit: cover;
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}
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/* Foreground matte sits above the captions so the person & mic occlude
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the text — classic cinematic lower-third layering. */
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#fg-overlay {
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z-index: 3;
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pointer-events: none;
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}
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/*
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Caption stage — perspective container so the text plane lies on the
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acoustic-foam wall in the upper-right of the frame. Small jitter is
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applied to the stage by GSAP to fake handheld motion tracking.
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*/
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#stage {
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position: absolute;
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top: 0;
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left: 0;
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width: 1280px;
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height: 720px;
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perspective: 1400px;
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perspective-origin: 30% 40%;
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pointer-events: none;
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z-index: 2;
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will-change: transform;
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}
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.wall-plane {
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position: absolute;
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/* Right-aligned cluster, but widened and pushed slightly left
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so emphasis words (EVERYTHING, SHARP AGAIN) reach past the
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subject's silhouette. Short words still hug the wall. */
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top: 90px;
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right: 30px;
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width: 720px;
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height: 520px;
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transform-style: preserve-3d;
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transform: rotateY(-13deg) rotateX(1deg);
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transform-origin: right center;
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padding: 24px 32px;
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display: flex;
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flex-direction: column;
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justify-content: center;
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align-items: flex-end;
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text-align: right;
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gap: 14px;
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}
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.cap {
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display: block;
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position: relative;
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line-height: 1.05;
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opacity: 0;
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/* The "embed in scene" move: overlay blend picks up the wall's
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luminance and color so the text feels lit BY the scene. */
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mix-blend-mode: screen;
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color: #fff4dc;
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text-shadow:
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0 0 12px rgba(255, 210, 150, 0.45),
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0 2px 5px rgba(0, 0, 0, 0.7);
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filter: brightness(1.1) contrast(1.05);
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will-change: transform, opacity, filter;
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}
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.cap .w {
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display: inline-block;
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opacity: 0;
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will-change: opacity, transform, filter;
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}
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/*
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Unified cinematic typography — no mode switch between soft & sharp.
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Elegant serif-inflected sans, italic for the dreamy first half,
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upright for the second half. One look, one feeling, progressing.
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*/
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.cap-1 {
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font-size: 78px;
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font-weight: 600;
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font-style: italic;
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letter-spacing: -0.01em;
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}
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.cap-2 {
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font-size: 66px;
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font-weight: 500;
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font-style: italic;
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letter-spacing: -0.005em;
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padding-right: 44px; /* hanging indent on right for right-aligned flow */
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}
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.cap-3 {
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font-size: 72px;
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font-weight: 700;
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font-style: normal;
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letter-spacing: -0.015em;
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}
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.cap-4 {
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font-size: 90px;
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font-weight: 900;
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font-style: normal;
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letter-spacing: -0.03em;
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text-transform: uppercase;
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line-height: 1;
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}
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</style>
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</head>
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<body>
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<div
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id="root"
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data-composition-id="main"
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data-start="0"
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data-duration="8.04"
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data-width="1280"
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data-height="720"
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>
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<!-- Layer 0: background plate (full video) -->
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<video
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id="a-roll"
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class="clip"
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src="source.mp4"
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muted
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playsinline
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data-duration="8.04"
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data-track-index="0"
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style="z-index: 1"
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></video>
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<!-- Layer 2: caption stage (between background and foreground matte) -->
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<div id="stage">
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<div class="wall-plane">
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<div id="cg-0" class="cap cap-1">
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<span class="w" data-i="0">Some</span>
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<span class="w" data-i="1">memories</span>
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<span class="w" data-i="2">feel</span>
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<span class="w" data-i="3">soft</span>
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</div>
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<div id="cg-1" class="cap cap-2">
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<span class="w" data-i="0">like</span>
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<span class="w" data-i="1">old</span>
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<span class="w" data-i="2">film</span>
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</div>
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<div id="cg-2" class="cap cap-3">
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<span class="w" data-i="0">but</span>
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<span class="w" data-i="1">suddenly</span>
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</div>
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<div id="cg-3" class="cap cap-4">
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<span class="w" data-i="0">everything</span>
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<span class="w" data-i="1">is</span>
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<span class="w" data-i="2">sharp</span>
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<span class="w" data-i="3">again</span>
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</div>
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</div>
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</div>
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<!-- Foreground occlusion (person + mic) is applied in post via ffmpeg
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overlay. Browser-side alpha webm is unreliable across encoders. -->
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<!-- Audio -->
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<audio
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id="a-roll-audio"
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src="source.mp4"
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data-start="0"
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data-duration="8.04"
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data-track-index="3"
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data-volume="1"
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></audio>
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</div>
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<script>
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window.__timelines = window.__timelines || {};
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const tl = gsap.timeline({ paused: true });
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const DUR = 8.04;
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/* ─────────────────────────────────────────────────────────────────
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Word-level transcript — ElevenLabs timestamps.
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───────────────────────────────────────────────────────────────── */
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const GROUPS = [
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{
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id: "cg-0",
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words: [
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{ text: "Some", start: 0.24, end: 0.44 },
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{ text: "memories", start: 0.48, end: 0.82 },
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{ text: "feel", start: 0.9, end: 1.14 },
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{ text: "soft", start: 1.2, end: 1.64 },
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],
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in: 0.2,
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out: 4.85,
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tone: "soft",
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},
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{
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id: "cg-1",
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words: [
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{ text: "like", start: 2.66, end: 2.78 },
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{ text: "old", start: 2.86, end: 3.02 },
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{ text: "film", start: 3.14, end: 3.46 },
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],
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in: 2.55,
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out: 4.85,
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tone: "soft",
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},
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{
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id: "cg-2",
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words: [
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{ text: "but", start: 5.02, end: 5.16 },
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{ text: "suddenly", start: 5.22, end: 5.76 },
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],
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in: 4.9,
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out: 8.04,
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tone: "present",
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},
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{
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id: "cg-3",
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words: [
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{ text: "everything", start: 6.8, end: 7.14 },
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{ text: "is", start: 7.16, end: 7.28 },
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{ text: "sharp", start: 7.3, end: 7.52 },
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{ text: "again", start: 7.56, end: 7.92 },
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],
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in: 6.7,
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out: 8.04,
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tone: "present",
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},
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];
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/* ─────────────────────────────────────────────────────────────────
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Each caption group: cinematic word-by-word reveal. No flashes, no
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grain — purely text animation. Soft groups drift up gently, later
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groups resolve firmly into place to match the sentence turn.
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───────────────────────────────────────────────────────────────── */
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GROUPS.forEach(function (g) {
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var sel = "#" + g.id;
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var words = g.words.map(function (_, i) {
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return sel + " .w[data-i='" + i + "']";
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});
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var isSoft = g.tone === "soft";
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/* Container stays fully visible — each word animates its own fade.
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This avoids a double-fade (container × word) that produced a
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non-linear pop in the first ~100ms of the first caption. */
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tl.set(sel, { opacity: 1, y: 0 }, Math.max(0, g.in - 0.01));
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/* Per-word reveal — opacity + translate only. No letter-spacing
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or filter:blur here: both can perturb inline-block metrics
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mid-animation and cause the cap line-box to reflow, which
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makes words like "Some" visibly shift between rows when a
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sibling word enters. transform-only = no reflow. */
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g.words.forEach(function (w, i) {
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if (isSoft) {
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tl.fromTo(
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words[i],
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{ opacity: 0, y: 8 },
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{
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opacity: 1,
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y: 0,
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duration: 0.45,
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ease: "power2.out",
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overwrite: "auto",
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},
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w.start,
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);
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} else {
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tl.fromTo(
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words[i],
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{ opacity: 0, y: 6, scale: 1.04 },
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{
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opacity: 1,
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y: 0,
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scale: 1.0,
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duration: 0.22,
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ease: "power3.out",
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overwrite: "auto",
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transformOrigin: "50% 50%",
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},
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w.start,
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);
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}
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});
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/* Group exit — soft groups linger and fade as the sentence turns,
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present groups hold to the end. Clean fades, no trickery. */
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if (g.out < DUR) {
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tl.to(
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sel,
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{ opacity: 0, duration: 0.5, ease: "power2.in", overwrite: "auto" },
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g.out - 0.5,
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);
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}
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tl.set(sel, { opacity: 0, visibility: "hidden" }, g.out);
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});
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/* Self-lint */
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GROUPS.forEach(function (g) {
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var el = document.getElementById(g.id);
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if (!el) return;
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tl.seek(g.out + 0.01);
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var cs = window.getComputedStyle(el);
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if (cs.opacity !== "0" && cs.visibility !== "hidden") {
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console.warn("[caption-lint] " + g.id + " visible at t=" + (g.out + 0.01).toFixed(2));
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}
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});
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tl.seek(0);
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window.__timelines["main"] = tl;
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</script>
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</body>
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</html>
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