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<html lang="zh-CN">
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    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Studio Presentation</title>

    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <!--
      Studio style uses three font families:
        1. Barlow 900       — the entire display and heading system; becomes graphic at scale
        2. Barlow 400/500   — body, lead paragraphs
        3. IBM Plex Mono    — footer metadata, slide counters, caption labels
        4. Noto Sans SC     — Chinese fallback for all roles
    -->
    <link
      href="https://fonts.googleapis.com/css2?family=Barlow:wght@400;500;700;800;900&family=IBM+Plex+Mono:wght@300;400;500&family=Noto+Sans+SC:wght@400;500;700;900&display=swap"
      rel="stylesheet"
    />

    <style>
      /* ╔══════════════════════════════════════════════════════════════════════╗
   ║  ZONE A · TOKENS  —  STUDIO STYLE                                    ║
   ║                                                                      ║
   ║  Replace this block to change the visual style entirely.             ║
   ║  Every color, font, and size in this file reads from these vars.     ║
   ║  Never write raw hex values, font names, or px sizes outside here.   ║
   ╚══════════════════════════════════════════════════════════════════════╝ */
      :root {
        /* ── Palette ──────────────────────────────────────────────────────── */
        /* Near-black: the dark slide background — warm dark, not cold neutral */
        --c-bg: #1c1c1c;
        /* Slightly lighter near-black for secondary dark surfaces */
        --c-bg-alt: #242422;
        /* Acid yellow: THE light slide background — yellow is the environment, not an accent */
        --c-bg-light: #f5d200;
        /* Slightly cooler yellow for secondary light surfaces */
        --c-bg-light-alt: #f0cc00;

        /* Primary text on dark: acid yellow — the only colour on dark slides */
        --c-fg: #f5d200;
        /* Secondary text on dark: yellow at 58% opacity — muted but still warm */
        --c-fg-2: rgba(245, 210, 0, 0.58);
        /* Tertiary / hint text on dark: yellow at 32% */
        --c-fg-3: rgba(245, 210, 0, 0.32);
        /* Primary text on light: near-black on yellow */
        --c-fg-light: #1c1c1c;
        /* Secondary text on light: near-black at 62% */
        --c-fg-light-2: rgba(28, 28, 28, 0.62);
        /* Tertiary text on light */
        --c-fg-light-3: rgba(28, 28, 28, 0.35);

        /* Accent: yellow on dark / same yellow (var reused by engine) */
        --c-accent: #f5d200;
        /* Dividers on dark: very dark warm border */
        --c-border: #2e2e2c;
        /* Dividers on light: near-black at 18% opacity on yellow */
        --c-border-light: rgba(28, 28, 28, 0.18);

        /* ── Typography ──────────────────────────────────────────────────── */
        /* Display + Heading: Barlow 900 — grotesque at max weight becomes a graphic object */
        --f-display: "Barlow", "Noto Sans SC", sans-serif;
        --f-heading: "Barlow", "Noto Sans SC", sans-serif;
        /* Body: Barlow 400/500 — same family, steps back as weight drops */
        --f-body: "Barlow", "Noto Sans SC", system-ui, sans-serif;
        /* Mono: IBM Plex Mono — metadata, counters, footer columns */
        --f-mono: "IBM Plex Mono", monospace;

        /* ── Type Scale ───────────────────────────────────────────────────── */
        /* Studio runs type LARGER than Signal — the headline IS the layout */
        --sz-display: 12vw; /* cover hero — type at maximum scale */
        --sz-h1: 7.5vw; /* chapter titles, statement headlines */
        --sz-h2: 4.8vw; /* section headers */
        --sz-h3: 2.8vw; /* sub-headlines */
        --sz-lead: 1.6vw; /* intro paragraphs */
        --sz-body: 1.15vw; /* body text, bullets */
        --sz-caption: 0.85vw; /* captions, footnotes */
        --sz-label: 0.72vw; /* mono metadata, chrome */

        /* ── Spacing ─────────────────────────────────────────────────────── */
        /* Studio pads tighter than Signal — type runs to near-edge */
        --pad-x: 5vw;
        --pad-y: 5vh;
        --gap-lg: 3.5vh;
        --gap-md: 2vh;
        --gap-sm: 1vh;

        /* ── Motion ──────────────────────────────────────────────────────── */
        /* Harder, sharper transitions — agency urgency, not editorial grace */
        --ease-slide: cubic-bezier(0.77, 0, 0.175, 1);
        --dur-slide: 0.75s;
        --ease-enter: cubic-bezier(0.16, 1, 0.3, 1);
        --dur-enter: 0.5s;
      }

      /* ╔══════════════════════════════════════════════════════════════════════╗
   ║  ZONE B · ENGINE — DO NOT MODIFY                                     ║
   ║                                                                      ║
   ║  Layout engine, transitions, animation system, navigation.           ║
   ║  Touching this breaks the mechanics.                                 ║
   ╚══════════════════════════════════════════════════════════════════════╝ */

      *,
      *::before,
      *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
      }
      html,
      body {
        width: 100%;
        height: 100%;
        overflow: hidden;
        background: var(--c-bg);
        -webkit-font-smoothing: antialiased;
      }

      /* Deck container — all slides sit side by side in one horizontal strip */
      #deck {
        display: flex;
        height: 100vh;
        transition: transform var(--dur-slide) var(--ease-slide);
        will-change: transform;
      }

      /* Slide base — each slide occupies exactly one full viewport */
      .slide {
        flex: 0 0 100vw;
        width: 100vw;
        height: 100vh;
        position: relative;
        padding: var(--pad-y) var(--pad-x);
        display: grid;
        grid-template-rows: auto 1fr auto;
        overflow: hidden;
      }
      .slide-body {
        min-height: 0;
      }

      /* Slide themes */
      .slide.dark {
        background: var(--c-bg);
        color: var(--c-fg);
      }
      .slide.light {
        background: var(--c-bg-light);
        color: var(--c-fg-light);
      }

      /* ── Animation system ─────────────────────────────────────────────── */
      /* Elements start invisible; become visible only when slide is active */
      [data-anim] {
        opacity: 0;
      }
      .slide.is-active [data-anim] {
        animation-duration: var(--dur-enter);
        animation-timing-function: var(--ease-enter);
        animation-fill-mode: forwards;
      }
      .slide.is-active [data-anim="fade-up"] {
        animation-name: kFadeUp;
      }
      .slide.is-active [data-anim="fade-in"] {
        animation-name: kFadeIn;
      }
      .slide.is-active [data-anim="reveal-right"] {
        animation-name: kRevealRight;
      }
      .slide.is-active [data-anim="reveal-left"] {
        animation-name: kRevealLeft;
      }
      .slide.is-active [data-anim="scale-in"] {
        animation-name: kScaleIn;
      }

      /* Staggered delays via data-delay attribute (0–6) */
      [data-delay="0"] {
        animation-delay: 0s;
      }
      [data-delay="1"] {
        animation-delay: 0.08s;
      }
      [data-delay="2"] {
        animation-delay: 0.18s;
      }
      [data-delay="3"] {
        animation-delay: 0.3s;
      }
      [data-delay="4"] {
        animation-delay: 0.44s;
      }
      [data-delay="5"] {
        animation-delay: 0.6s;
      }
      [data-delay="6"] {
        animation-delay: 0.78s;
      }

      @keyframes kFadeUp {
        from {
          opacity: 0;
          transform: translateY(28px);
        }
        to {
          opacity: 1;
          transform: none;
        }
      }
      @keyframes kFadeIn {
        from {
          opacity: 0;
        }
        to {
          opacity: 1;
        }
      }
      @keyframes kRevealRight {
        from {
          clip-path: inset(0 100% 0 0);
          opacity: 1;
        }
        to {
          clip-path: inset(0 0% 0 0);
          opacity: 1;
        }
      }
      @keyframes kRevealLeft {
        from {
          clip-path: inset(0 0 0 100%);
          opacity: 1;
        }
        to {
          clip-path: inset(0 0 0 0%);
          opacity: 1;
        }
      }
      @keyframes kScaleIn {
        from {
          opacity: 0;
          transform: scale(0.94);
        }
        to {
          opacity: 1;
          transform: none;
        }
      }

      /* ── Navigation UI ───────────────────────────────────────────────── */
      #nav-dots {
        position: fixed;
        bottom: 24px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 7px;
        z-index: 100;
      }
      .nav-dot {
        width: 5px;
        height: 5px;
        border-radius: 50%;
        border: none;
        background: rgba(255, 255, 255, 0.22);
        cursor: pointer;
        transition:
          background 0.3s,
          transform 0.3s;
        padding: 0;
      }
      .nav-dot.is-active {
        background: rgba(255, 255, 255, 0.8);
        transform: scale(1.4);
      }

      #slide-counter {
        position: fixed;
        bottom: 20px;
        right: 28px;
        font-family: var(--f-mono);
        font-size: 10px;
        letter-spacing: 0.12em;
        color: rgba(255, 255, 255, 0.25);
        z-index: 100;
        user-select: none;
      }

      /* ╔══════════════════════════════════════════════════════════════════════╗
   ║  ZONE C · TYPOGRAPHY  —  STUDIO OVERRIDES                            ║
   ║                                                                      ║
   ║  All headings: weight 900, uppercase, tight tracking.                ║
   ║  The headline is not decoration — it IS the design.                  ║
   ╚══════════════════════════════════════════════════════════════════════╝ */

      /* Display: maximum weight, maximum scale, uppercase — type as visual mass */
      .display {
        font-size: var(--sz-display);
        font-weight: 900;
        line-height: 0.9;
        letter-spacing: -0.02em;
        text-transform: uppercase;
        font-family: var(--f-display);
      }
      .h1 {
        font-size: var(--sz-h1);
        font-weight: 900;
        line-height: 0.92;
        letter-spacing: -0.02em;
        text-transform: uppercase;
        font-family: var(--f-heading);
      }
      .h2 {
        font-size: var(--sz-h2);
        font-weight: 900;
        line-height: 0.95;
        letter-spacing: -0.01em;
        text-transform: uppercase;
        font-family: var(--f-heading);
      }
      .h3 {
        font-size: var(--sz-h3);
        font-weight: 700;
        line-height: 1.1;
        text-transform: uppercase;
        font-family: var(--f-heading);
      }
      .lead {
        font-size: var(--sz-lead);
        font-weight: 500;
        line-height: 1.45;
        font-family: var(--f-body);
      }
      .body {
        font-size: var(--sz-body);
        font-weight: 400;
        line-height: 1.6;
        font-family: var(--f-body);
      }
      .caption {
        font-size: var(--sz-caption);
        font-weight: 400;
        line-height: 1.5;
        font-family: var(--f-body);
      }
      /* Label: mono metadata — the only non-bold text that gets prominence */
      .label {
        font-size: var(--sz-label);
        font-weight: 500;
        letter-spacing: 0.06em;
        font-family: var(--f-mono);
      }

      /* Muted variants — context-aware opacity */
      .muted {
        color: var(--c-fg-2);
      }
      .light .muted {
        color: var(--c-fg-light-2);
      }

      /* Accent colour class */
      .accent {
        color: var(--c-accent);
      }
      /* On light slides, accent is the dark foreground */
      .light .accent {
        color: var(--c-fg-light);
      }

      /* Bullet list — Studio signature: dash bullet in accent, tight spacing */
      .bullet-list {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: var(--gap-sm);
        font-family: var(--f-body);
        font-size: var(--sz-body);
        font-weight: 400;
        line-height: 1.5;
        padding-left: 1em;
      }
      .bullet-list li::before {
        content: "\2014"; /* em dash used as bullet marker */
        margin-left: -1em;
        margin-right: 0.5em;
        color: var(--c-accent);
      }
      .light .bullet-list li::before {
        color: var(--c-fg-light);
      }

      /* ── Studio cover footer: three-column metadata bar ──────────────────── */
      /* The signature Boring Studios three-column foot: studio × client, title, name */
      .cover-footer {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 0;
        padding-top: var(--gap-md);
        border-top: 1px solid var(--c-fg-3);
        margin-top: auto;
      }
      .cover-footer-col {
        font-family: var(--f-mono);
        font-size: var(--sz-caption);
        font-weight: 400;
        line-height: 1.5;
      }
      .cover-footer-col:last-child {
        text-align: right;
      }

      /* Image placeholder box — dark warm grey rectangle, mono label centered */
      .img-placeholder {
        background: var(--c-bg-alt);
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--f-mono);
        font-size: var(--sz-label);
        letter-spacing: 0.1em;
        color: var(--c-fg-3);
        width: 100%;
        flex: 1;
      }
      .light .img-placeholder {
        background: var(--c-bg-light-alt);
        color: var(--c-fg-light-3);
        border: 1px solid var(--c-border-light);
      }

      /* ╔══════════════════════════════════════════════════════════════════════╗
   ║  ZONE D · CHROME                                                     ║
   ╚══════════════════════════════════════════════════════════════════════╝ */

      /* Chrome (top bar) and footer */
      .slide-chrome,
      .slide-foot {
        display: flex;
        justify-content: space-between;
        align-items: center;
      }
      .slide-chrome {
        padding-bottom: var(--gap-sm);
        border-bottom: 1px solid var(--c-border);
        margin-bottom: var(--gap-md);
      }
      .slide-foot {
        padding-top: var(--gap-sm);
        border-top: 1px solid var(--c-border);
        margin-top: var(--gap-md);
      }
      .light .slide-chrome,
      .light .slide-foot {
        border-color: var(--c-border-light);
      }

      /* Special layouts that don't use chrome/foot */
      .slide--cover .slide-chrome,
      .slide--cover .slide-foot,
      .slide--chapter .slide-chrome,
      .slide--chapter .slide-foot,
      .slide--quote .slide-chrome,
      .slide--quote .slide-foot,
      .slide--statement .slide-chrome,
      .slide--statement .slide-foot,
      .slide--end .slide-chrome,
      .slide--end .slide-foot {
        display: none;
      }

      /* ╔══════════════════════════════════════════════════════════════════════╗
   ║  ZONE E · LAYOUT PATTERNS  —  STUDIO-SPECIFIC                       ║
   ╚══════════════════════════════════════════════════════════════════════╝ */

      /* 1. COVER ─────────────────────────────────────────────────────────── */
      /* Full dark slide, image placeholder fills the background, type overlaid */
      .slide--cover {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        padding: 0;
        position: relative;
      }
      /* Image placeholder sits absolute behind everything */
      .cover-img-area {
        position: absolute;
        inset: 0;
        background: var(
          --c-bg-alt
        ); /* warm dark placeholder — replace with real image */
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: var(--f-mono);
        font-size: var(--sz-label);
        letter-spacing: 0.1em;
        color: var(--c-fg-3);
      }
      /* Type area: z-index above the image, padded normally */
      .cover-type {
        position: relative;
        z-index: 1;
        padding: var(--pad-y) var(--pad-x) 0;
        flex: 1;
        display: flex;
        align-items: flex-start;
      }
      /* Three-column meta footer over the image */
      .cover-meta {
        position: relative;
        z-index: 1;
        padding: var(--gap-md) var(--pad-x) var(--pad-y);
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 0;
        border-top: 1px solid rgba(245, 210, 0, 0.25);
      }
      .cover-meta-col {
        font-family: var(--f-mono);
        font-size: var(--sz-caption);
        font-weight: 400;
        line-height: 1.6;
        color: var(--c-fg-2);
      }
      .cover-meta-col:last-child {
        text-align: right;
      }

      /* 2. CHAPTER ───────────────────────────────────────────────────────── */
      /* Yellow or dark chapter divider — huge uppercase section number + title */
      .slide--chapter {
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding-bottom: calc(var(--pad-y) * 1.5);
      }
      .chapter-num {
        font-family: var(--f-mono);
        font-size: var(--sz-label);
        letter-spacing: 0.22em;
        text-transform: uppercase;
        color: var(--c-fg-2);
        margin-bottom: var(--gap-lg);
      }
      .light .chapter-num {
        color: var(--c-fg-light-2);
      }

      /* 3. STATEMENT ─────────────────────────────────────────────────────── */
      /* Full-slide statement — huge uppercase type, zero decoration */
      .slide--statement {
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding-bottom: calc(var(--pad-y) * 1.5);
      }
      .statement-body {
        display: flex;
        flex-direction: column;
        gap: var(--gap-md);
      }

      /* 4. SPLIT ─────────────────────────────────────────────────────────── */
      .slide--split .slide-body {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--pad-x) * 0.8);
        align-items: center;
      }
      .split-text {
        display: flex;
        flex-direction: column;
        gap: var(--gap-md);
      }
      .split-image {
        display: flex;
        flex-direction: column;
        gap: var(--gap-sm);
        height: 100%;
      }

      /* 5. STATS ─────────────────────────────────────────────────────────── */
      .slide--stats {
        display: flex;
        flex-direction: column;
        justify-content: center;
      }
      .slide--stats .slide-body {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: var(--gap-lg);
      }
      /* Stats numbers: huge weight-900 display, near-black on yellow */
      .stats-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 0;
      }
      .stat-card {
        display: flex;
        flex-direction: column;
        gap: var(--gap-sm);
        padding: var(--gap-md) var(--gap-md) var(--gap-md) 0;
        border-top: 2px solid var(--c-fg-light);
      }
      .dark .stat-card {
        border-top-color: var(--c-fg-3);
      }
      /* Value: weight-900 display type — the number IS the stat */
      .stat-value {
        font-family: var(--f-display);
        font-size: 5.5vw;
        font-weight: 900;
        line-height: 0.9;
        color: var(--c-fg-light);
        letter-spacing: -0.03em;
        text-transform: uppercase;
      }
      .dark .stat-value {
        color: var(--c-fg);
      }
      .stat-label {
        font-family: var(--f-body);
        font-size: var(--sz-body);
        font-weight: 500;
        line-height: 1.4;
      }
      .stat-note {
        font-family: var(--f-mono);
        font-size: var(--sz-caption);
        letter-spacing: 0.05em;
        color: var(--c-fg-light-3);
      }
      .dark .stat-note {
        color: var(--c-fg-3);
      }

      /* 6. LIST ─────────────────────────────────────────────────────────── */
      .slide--list {
        display: flex;
        flex-direction: column;
        justify-content: center;
      }
      .slide--list .slide-body {
        display: grid;
        grid-template-columns: 2fr 3fr;
        gap: calc(var(--pad-x) * 0.8);
        align-items: center;
      }
      .list-head {
        display: flex;
        flex-direction: column;
        gap: var(--gap-md);
      }

      /* 7. QUOTE ─────────────────────────────────────────────────────────── */
      /* Dark slide — large quote with no quote mark, just raw type */
      .slide--quote {
        display: flex;
        flex-direction: column;
        justify-content: center;
      }
      .quote-text {
        font-family: var(--f-heading);
        font-size: 3.8vw;
        font-weight: 900;
        line-height: 1.05;
        letter-spacing: -0.02em;
        text-transform: uppercase;
        max-width: 82%;
        margin-bottom: var(--gap-lg);
      }
      .quote-attr {
        display: flex;
        flex-direction: column;
        gap: 0.4vh;
      }

      /* 8. COMPARE ─────────────────────────────────────────────────────────── */
      .slide--compare .slide-body {
        display: grid;
        grid-template-columns: 1fr 1fr;
        height: 100%;
      }
      .compare-panel {
        display: flex;
        flex-direction: column;
        gap: var(--gap-md);
        padding: var(--gap-md) 0;
      }
      .compare-panel.left {
        padding-right: calc(var(--pad-x) * 0.55);
        border-right: 2px solid var(--c-fg-light);
      }
      .compare-panel.right {
        padding-left: calc(var(--pad-x) * 0.55);
      }
      .dark .compare-panel.left {
        border-right-color: var(--c-fg-3);
      }
      .compare-label {
        font-family: var(--f-mono);
        font-size: var(--sz-label);
        letter-spacing: 0.16em;
        text-transform: uppercase;
        padding-bottom: var(--gap-sm);
        border-bottom: 1px solid var(--c-border-light);
      }
      .dark .compare-label {
        border-bottom-color: var(--c-border);
      }
      .compare-label.after {
        color: var(--c-accent);
      }
      .light .compare-label.after {
        color: var(--c-fg-light);
        font-weight: 700;
      }

      /* 9. CHART ─────────────────────────────────────────────────────────── */
      .slide--chart .slide-body {
        display: flex;
        flex-direction: column;
        gap: var(--gap-md);
        min-height: 0;
      }
      .chart-header {
        display: flex;
        justify-content: space-between;
        align-items: baseline;
        flex-shrink: 0;
      }
      .chart-wrapper {
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        min-height: 0;
      }
      /* Bar chart track: bars sit in a horizontal row along a baseline */
      .bar-track {
        height: 30vh;
        display: flex;
        align-items: flex-end;
        gap: 4vw;
        border-left: 2px solid var(--c-fg-3);
        padding-left: 0.5vw;
      }
      .light .bar-track {
        border-left-color: var(--c-border-light);
      }
      .bar-col {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-end;
        gap: 1vh;
        height: 100%;
      }
      /* Bar fill: default is dark muted, accent is full yellow */
      .bar-fill {
        width: 100%;
        background: var(--c-fg-3);
      }
      .bar-fill.accent {
        background: var(--c-accent);
      }
      .light .bar-fill {
        background: var(--c-fg-light-3);
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      .light .bar-fill.accent {
        background: var(--c-fg-light);
      }
      .bar-x-label {
        font-family: var(--f-mono);
        font-size: var(--sz-caption);
        letter-spacing: 0.1em;
        color: var(--c-fg-3);
        white-space: nowrap;
        text-transform: uppercase;
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      .light .bar-x-label {
        color: var(--c-fg-light-3);
      }
      .bar-val {
        font-family: var(--f-body);
        font-size: var(--sz-body);
        font-weight: 700;
        color: var(--c-fg-2);
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      .bar-val.hi {
        color: var(--c-accent);
        font-weight: 900;
      }
      .light .bar-val {
        color: var(--c-fg-light-2);
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      .light .bar-val.hi {
        color: var(--c-fg-light);
      }
      .chart-baseline {
        height: 2px;
        background: var(--c-fg-3);
        flex-shrink: 0;
        margin-top: 1px;
      }
      .light .chart-baseline {
        background: var(--c-border-light);
      }
      .chart-source {
        flex-shrink: 0;
        font-family: var(--f-mono);
        font-size: var(--sz-caption);
        color: var(--c-fg-3);
        letter-spacing: 0.06em;
        margin-top: var(--gap-sm);
      }
      .light .chart-source {
        color: var(--c-fg-light-3);
      }

      /* 10. END ─────────────────────────────────────────────────────────── */
      /* Yellow slide — huge question fills top 60%, two-column contact below */
      .slide--end {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
      }
    </style>
  </head>

  <body>
    <!-- NAV DOTS: generated by JS -->
    <nav id="nav-dots"></nav>
    <!-- SLIDE COUNTER: generated by JS -->
    <div id="slide-counter"></div>

    <!-- ═══════════════════════════════════════════════════════════════════════
         DECK — all 12 slides live here, side by side
         ═══════════════════════════════════════════════════════════════════════ -->
    <div id="deck">
      <!-- ═══════ SLIDE 1 · COVER dark ══════════════════════════════════════
           Image placeholder fills the background.
           "PROPOSAL" in huge yellow display type across the top.
           Three-column meta footer at bottom edge.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide dark slide--cover">
        <!-- Full-bleed image placeholder: sits behind all content -->
        <div class="cover-img-area" data-anim="fade-in" data-delay="0">
          IMAGE PLACEHOLDER
        </div>

        <!-- Type block: "PROPOSAL" at display scale — type over image -->
        <div class="cover-type">
          <h1
            class="display"
            style="color: var(--c-fg)"
            data-anim="fade-up"
            data-delay="1"
          >
            PROPOSAL
          </h1>
        </div>

        <!-- Three-column footer: studio × client · presentation title · studio name -->
        <div class="cover-meta" data-anim="fade-in" data-delay="3">
          <div class="cover-meta-col">
            [Studio Name] × [Client Name]<br />
            [Date]
          </div>
          <div class="cover-meta-col" style="text-align: center">
            [Presentation Title]
          </div>
          <div class="cover-meta-col" style="text-align: right">
            [Studio Name]
          </div>
        </div>
      </section>

      <!-- ═══════ SLIDE 2 · CHAPTER light (yellow bg) ═══════════════════════
           Section divider: mono section number + huge black title.
           Yellow background — no decoration, type IS the design.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide light slide--chapter">
        <!-- Section number: mono label in muted near-black -->
        <div class="chapter-num" data-anim="fade-in" data-delay="0">
          01 / WHO WE ARE
        </div>

        <!-- Chapter title: maximum weight, runs wide -->
        <h1
          class="h1"
          style="max-width: 90%; color: var(--c-fg-light)"
          data-anim="fade-up"
          data-delay="1"
        >
          WHO WE ARE
        </h1>
      </section>

      <!-- ═══════ SLIDE 3 · STATEMENT dark ══════════════════════════════════
           Single huge statement on near-black.
           Yellow type, no decoration, no chrome.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide dark slide--statement">
        <div
          class="statement-body"
          style="
            justify-content: flex-end;
            height: 100%;
            display: flex;
            flex-direction: column;
            padding-bottom: calc(var(--pad-y) * 0.5);
          "
        >
          <h1
            class="h1"
            style="max-width: 90%"
            data-anim="fade-up"
            data-delay="0"
          >
            GREAT WORK DOESN'T HAPPEN BY ACCIDENT
          </h1>
        </div>
      </section>

      <!-- ═══════ SLIDE 4 · SPLIT light (yellow bg) ════════════════════════
           Text left + image placeholder right.
           Black on yellow — tight, structured, zero ornament.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide light slide--split">
        <!-- Chrome bar -->
        <div class="slide-chrome">
          <span
            class="label"
            style="color: var(--c-fg-light-2)"
            data-anim="fade-in"
            data-delay="0"
            >Our Work</span
          >
          <span
            class="label"
            style="color: var(--c-fg-light-2)"
            data-anim="fade-in"
            data-delay="0"
            >04 / 12</span
          >
        </div>

        <div class="slide-body">
          <!-- Left: text content -->
          <div class="split-text" data-anim="fade-up" data-delay="1">
            <p
              class="label"
              style="color: var(--c-fg-light-2); letter-spacing: 0.12em"
            >
              APPROACH
            </p>
            <h2 class="h2" style="color: var(--c-fg-light)">
              WE BUILD WHAT OTHERS PLAN
            </h2>
            <p
              class="lead"
              style="
                color: var(--c-fg-light-2);
                font-weight: 400;
                text-transform: none;
              "
            >
              Our studio pairs strategic thinking with craft-level execution.
              Every project begins with a question: what needs to be true for
              this to work? We answer it in the work itself.
            </p>
            <ul class="bullet-list">
              <li>Strategy before aesthetics</li>
              <li>Constraints as creative fuel</li>
              <li>Delivery on schedule, not on someday</li>
            </ul>
          </div>

          <!-- Right: image placeholder -->
          <div
            data-anim="fade-in"
            data-delay="3"
            style="
              display: flex;
              flex-direction: column;
              gap: var(--gap-sm);
              height: 100%;
            "
          >
            <div class="img-placeholder" style="min-height: 40vh">
              IMAGE PLACEHOLDER
            </div>
            <p
              class="caption"
              style="color: var(--c-fg-light-3); font-family: var(--f-mono)"
            >
              [Caption — project name, year]
            </p>
          </div>
        </div>

        <div class="slide-foot">
          <span class="label" style="color: var(--c-fg-light-3)"
            >[Studio Name] · [Date]</span
          >
          <span class="label" style="color: var(--c-fg-light-2)">04 / 12</span>
        </div>
      </section>

      <!-- ═══════ SLIDE 5 · STATS light (yellow bg) ════════════════════════
           3 huge stats with weight-900 display numbers.
           Numbers at near-display scale — the numbers are the layout.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide light slide--stats">
        <!-- Chrome bar -->
        <div class="slide-chrome">
          <span
            class="label"
            style="color: var(--c-fg-light-2)"
            data-anim="fade-in"
            data-delay="0"
            >By the Numbers</span
          >
          <span
            class="label"
            style="color: var(--c-fg-light-2)"
            data-anim="fade-in"
            data-delay="0"
            >05 / 12</span
          >
        </div>

        <div class="slide-body">
          <!-- Section label above stats -->
          <h2
            class="h2"
            style="color: var(--c-fg-light)"
            data-anim="fade-up"
            data-delay="1"
          >
            THE STUDIO
          </h2>

          <!-- 3-column stat grid: numbers at display scale -->
          <div class="stats-grid" data-anim="fade-up" data-delay="2">
            <div class="stat-card">
              <div class="stat-value">12</div>
              <div class="stat-label" style="color: var(--c-fg-light)">
                Years of practice
              </div>
              <div class="stat-note">[Studio Name] founded [Year]</div>
            </div>
            <div class="stat-card">
              <div class="stat-value">200+</div>
              <div class="stat-label" style="color: var(--c-fg-light)">
                Projects delivered
              </div>
              <div class="stat-note">Across [N] industries</div>
            </div>
            <div class="stat-card">
              <div class="stat-value">3</div>
              <div class="stat-label" style="color: var(--c-fg-light)">
                Continents active
              </div>
              <div class="stat-note">[City A], [City B], [City C]</div>
            </div>
          </div>
        </div>

        <div class="slide-foot">
          <span class="label" style="color: var(--c-fg-light-3)"
            >[Studio Name] · [Date]</span
          >
          <span class="label" style="color: var(--c-fg-light-2)">05 / 12</span>
        </div>
      </section>

      <!-- ═══════ SLIDE 6 · LIST dark ═══════════════════════════════════════
           "WHAT WE OFFER" heading left, 5 yellow bullets right.
           Dark background, yellow type throughout.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide dark slide--list">
        <!-- Chrome bar -->
        <div class="slide-chrome">
          <span class="label muted" data-anim="fade-in" data-delay="0"
            >Services</span
          >
          <span class="label muted" data-anim="fade-in" data-delay="0"
            >06 / 12</span
          >
        </div>

        <div class="slide-body">
          <!-- Left: heading -->
          <div class="list-head" data-anim="fade-up" data-delay="1">
            <h2 class="h2" style="color: var(--c-fg)">WHAT WE OFFER</h2>
            <p
              class="lead muted"
              style="text-transform: none; font-weight: 400; max-width: 90%"
            >
              A focused set of services built for ambitious creative and
              commercial challenges.
            </p>
          </div>

          <!-- Right: bullet list -->
          <ul
            class="bullet-list"
            style="font-size: var(--sz-lead); font-weight: 500"
            data-anim="fade-up"
            data-delay="2"
          >
            <li>Brand strategy and identity systems</li>
            <li>Campaign and content direction</li>
            <li>Digital experience design and build</li>
            <li>Motion and video production</li>
            <li>Ongoing creative partnership and retainer</li>
          </ul>
        </div>

        <div class="slide-foot">
          <span class="label muted">[Studio Name] · [Date]</span>
          <span class="label muted">06 / 12</span>
        </div>
      </section>

      <!-- ═══════ SLIDE 7 · QUOTE dark ══════════════════════════════════════
           Large client quote, no quote mark, just raw uppercase weight-900 type.
           Attribution below in mono label.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide dark slide--quote">
        <!-- Quote body: uppercase grotesque, no quote marks needed -->
        <p
          class="quote-text"
          style="color: var(--c-fg)"
          data-anim="fade-up"
          data-delay="0"
        >
          THEY DON'T JUST MAKE THINGS LOOK GOOD. THEY MAKE THINGS WORK.
        </p>

        <!-- Attribution: mono label -->
        <div class="quote-attr" data-anim="fade-in" data-delay="2">
          <span class="label" style="color: var(--c-fg); letter-spacing: 0.1em"
            >[CLIENT NAME]</span
          >
          <span class="label muted">CMO · [Company] · [Year]</span>
        </div>
      </section>

      <!-- ═══════ SLIDE 8 · COMPARE light (yellow bg) ══════════════════════
           Before/after on yellow background.
           Two panels divided by a heavy vertical rule.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide light slide--compare">
        <!-- Chrome bar -->
        <div class="slide-chrome">
          <span
            class="label"
            style="color: var(--c-fg-light-2)"
            data-anim="fade-in"
            data-delay="0"
            >Before / After</span
          >
          <span
            class="label"
            style="color: var(--c-fg-light-2)"
            data-anim="fade-in"
            data-delay="0"
            >08 / 12</span
          >
        </div>

        <div class="slide-body">
          <!-- Left panel: Before -->
          <div class="compare-panel left" data-anim="fade-up" data-delay="1">
            <div class="compare-label" style="color: var(--c-fg-light-2)">
              BEFORE
            </div>
            <h3 class="h3" style="color: var(--c-fg-light)">
              GENERIC IDENTITY, FORGETTABLE CAMPAIGNS
            </h3>
            <p
              class="lead"
              style="
                color: var(--c-fg-light-2);
                text-transform: none;
                font-weight: 400;
              "
            >
              A brand built by committee, refined to inoffensiveness. Nothing
              wrong. Nothing memorable. Indistinguishable from category norms.
            </p>
            <ul class="bullet-list">
              <li>No clear point of view</li>
              <li>Inconsistent execution across touchpoints</li>
              <li>Campaigns that launched and disappeared</li>
            </ul>
          </div>

          <!-- Right panel: After -->
          <div class="compare-panel right" data-anim="fade-up" data-delay="2">
            <div class="compare-label after" style="font-weight: 700">
              AFTER
            </div>
            <h3 class="h3" style="color: var(--c-fg-light)">
              A DISTINCTIVE VOICE PEOPLE RECOGNIZE
            </h3>
            <p
              class="lead"
              style="
                color: var(--c-fg-light-2);
                text-transform: none;
                font-weight: 400;
              "
            >
              A brand with a defined perspective. Work that accumulates — each
              campaign reinforces the one before, building memory and trust.
            </p>
            <ul class="bullet-list">
              <li>Ownable visual and verbal territory</li>
              <li>System that scales without diluting</li>
              <li>Campaigns that created lasting recall</li>
            </ul>
          </div>
        </div>

        <div class="slide-foot">
          <span class="label" style="color: var(--c-fg-light-3)"
            >[Studio Name] · [Date]</span
          >
          <span class="label" style="color: var(--c-fg-light-2)">08 / 12</span>
        </div>
      </section>

      <!-- ═══════ SLIDE 9 · CHAPTER dark ════════════════════════════════════
           Dark chapter divider — "THE WORK" in huge yellow type.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide dark slide--chapter">
        <!-- Section number -->
        <div class="chapter-num" data-anim="fade-in" data-delay="0">
          02 / THE WORK
        </div>

        <!-- Chapter title: yellow on dark at h1 scale -->
        <h1
          class="h1"
          style="max-width: 90%; color: var(--c-fg)"
          data-anim="fade-up"
          data-delay="1"
        >
          THE WORK
        </h1>
      </section>

      <!-- ═══════ SLIDE 10 · STATEMENT light (yellow bg) ════════════════════
           Huge statement on yellow — black type filling most of the slide.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide light slide--statement">
        <div
          class="statement-body"
          style="
            justify-content: flex-end;
            height: 100%;
            display: flex;
            flex-direction: column;
            padding-bottom: calc(var(--pad-y) * 0.5);
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        >
          <h1
            class="h1"
            style="max-width: 95%; color: var(--c-fg-light)"
            data-anim="fade-up"
            data-delay="0"
          >
            BOLD IDEAS DESERVE BOLD EXECUTION
          </h1>
        </div>
      </section>

      <!-- ═══════ SLIDE 11 · CHART dark ════════════════════════════════════
           Bar chart with yellow accent on the highlight bar.
           Near-black background, yellow accent bar, muted bars for others.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide dark slide--chart">
        <!-- Chrome bar -->
        <div class="slide-chrome">
          <span class="label muted" data-anim="fade-in" data-delay="0"
            >Project Output</span
          >
          <span class="label muted" data-anim="fade-in" data-delay="0"
            >11 / 12</span
          >
        </div>

        <div class="slide-body">
          <div class="chart-header">
            <h2
              class="h2"
              style="color: var(--c-fg)"
              data-anim="fade-up"
              data-delay="0"
            >
              PROJECTS BY YEAR
            </h2>
            <span
              class="caption muted"
              style="
                font-family: var(--f-mono);
                text-transform: uppercase;
                letter-spacing: 0.08em;
              "
              data-anim="fade-in"
              data-delay="1"
            >
              Count · [Studio Name] Portfolio
            </span>
          </div>

          <div class="chart-wrapper" data-anim="fade-up" data-delay="2">
            <div class="bar-track">
              <div class="bar-col">
                <span class="bar-val">14</span>
                <div class="bar-fill" style="height: 8vh"></div>
                <span class="bar-x-label">[Y-4]</span>
              </div>
              <div class="bar-col">
                <span class="bar-val">21</span>
                <div class="bar-fill" style="height: 12vh"></div>
                <span class="bar-x-label">[Y-3]</span>
              </div>
              <div class="bar-col">
                <span class="bar-val">28</span>
                <div class="bar-fill" style="height: 17vh"></div>
                <span class="bar-x-label">[Y-2]</span>
              </div>
              <div class="bar-col">
                <span class="bar-val">35</span>
                <div class="bar-fill" style="height: 22vh"></div>
                <span class="bar-x-label">[Y-1]</span>
              </div>
              <div class="bar-col">
                <!-- Accent bar: the highlighted year -->
                <span class="bar-val hi">47</span>
                <div class="bar-fill accent" style="height: 30vh"></div>
                <span class="bar-x-label">[Year]</span>
              </div>
            </div>
            <div class="chart-baseline"></div>
          </div>

          <p class="chart-source" data-anim="fade-in" data-delay="3">
            Source: [Studio Name] internal tracking · [Year]
          </p>
        </div>

        <div class="slide-foot">
          <span class="label muted">[Studio Name] · [Date]</span>
          <span class="label muted">11 / 12</span>
        </div>
      </section>

      <!-- ═══════ SLIDE 12 · END light (yellow bg) ══════════════════════════
           Huge closing question fills top portion, two-column contact info below.
           Studio signature ending layout from the Boring Studios reference.
           ═══════════════════════════════════════════════════════════════════ -->
      <section class="slide light slide--end">
        <!-- Main closing statement: display scale, fills the top of the slide -->
        <h1
          class="h1"
          style="
            max-width: 85%;
            line-height: 0.9;
            font-size: var(--sz-display);
            color: var(--c-fg-light);
          "
          data-anim="fade-up"
          data-delay="0"
        >
          ANY QUESTIONS OR THOUGHTS?
        </h1>

        <!-- Two-column contact info below the statement -->
        <div
          style="
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--gap-lg);
            margin-top: var(--gap-lg);
          "
          data-anim="fade-up"
          data-delay="2"
        >
          <div>
            <p class="body" style="color: var(--c-fg-light-2)">
              Contact [Name A] via email on [name@studio.com]<br />
              or via phone on [+00 000 000 000]
            </p>
          </div>
          <div>
            <p class="body" style="color: var(--c-fg-light-2)">
              Contact [Name B] via email on [name@studio.com]<br />
              or via phone on [+00 000 000 000]
            </p>
          </div>
        </div>

        <!-- Three-column footer: the Studio signature cover footer pattern -->
        <div
          class="cover-footer"
          style="border-top-color: var(--c-border-light)"
          data-anim="fade-in"
          data-delay="4"
        >
          <span class="cover-footer-col" style="color: var(--c-fg-light-2)">
            Page 12<br />[Studio Name] × [Client Name]
          </span>
          <span
            class="cover-footer-col"
            style="text-align: center; color: var(--c-fg-light-2)"
          >
            [Presentation title]
          </span>
          <span class="cover-footer-col" style="color: var(--c-fg-light-2)">
            [Studio Name]
          </span>
        </div>
      </section>
    </div>
    <!-- /deck -->

    <script>
      /* ══════════════════════════════════════════════════════════════════════
         STUDIO PRESENTATION ENGINE
         Self-contained navigation: keyboard, touch, mouse-wheel, nav-dots.
         No external dependencies.
         ══════════════════════════════════════════════════════════════════════ */
      (function () {
        "use strict";

        /* ── State ─────────────────────────────────────────────────────────── */
        const deck = document.getElementById("deck");
        const slides = Array.from(document.querySelectorAll(".slide"));
        const dotsEl = document.getElementById("nav-dots");
        const counter = document.getElementById("slide-counter");
        const total = slides.length;
        let current = 0;
        let animating = false;

        /* ── Bootstrap: set deck width, build nav dots ─────────────────────── */
        function init() {
          // The deck is one wide strip — width equals N full viewports
          deck.style.width = total + "00vw";

          // Build one dot per slide
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            btn.setAttribute("aria-label", "Go to slide " + (i + 1));
            btn.addEventListener("click", function () {
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            dotsEl.appendChild(btn);
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          // Activate the first slide immediately
          goTo(0, true); // true = skip transition on load
        }

        /* ── goTo: the single source of truth for navigation ───────────────── */
        function goTo(index, instant) {
          // Clamp to valid range
          index = Math.max(0, Math.min(total - 1, index));
          if (index === current && !instant) return;

          // Mark animating to block rapid key/swipe spam
          animating = true;

          // Deactivate current slide: reset animations by toggling is-active
          const prev = slides[current];
          prev.classList.remove("is-active");
          // Force a reflow so removing then re-adding is-active (on same slide)
          // actually re-triggers the keyframe animations
          void prev.offsetWidth; // eslint-disable-line no-void

          // Translate the deck
          if (instant) {
            // Remove transition temporarily for the initial load snap
            deck.style.transition = "none";
            deck.style.transform = "translateX(-" + index + "00vw)";
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            deck.style.transition = "";
          } else {
            deck.style.transform = "translateX(-" + index + "00vw)";
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          // Activate new slide
          current = index;
          const next = slides[current];
          next.classList.add("is-active");

          // Update nav dots
          Array.from(dotsEl.children).forEach(function (dot, i) {
            dot.classList.toggle("is-active", i === current);
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          // Update counter: "3 / 12"
          counter.textContent = current + 1 + " / " + total;

          // Unlock after transition completes
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          setTimeout(function () {
            animating = false;
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        /* ── Keyboard navigation ──────────────────────────────────────────── */
        document.addEventListener("keydown", function (e) {
          if (animating) return;
          if (
            e.key === "ArrowRight" ||
            e.key === "ArrowDown" ||
            e.key === " "
          ) {
            e.preventDefault();
            goTo(current + 1);
          } else if (e.key === "ArrowLeft" || e.key === "ArrowUp") {
            e.preventDefault();
            goTo(current - 1);
          } else if (e.key === "Home") {
            e.preventDefault();
            goTo(0);
          } else if (e.key === "End") {
            e.preventDefault();
            goTo(total - 1);
          }
        });

        /* ── Mouse-wheel navigation ───────────────────────────────────────── */
        let wheelCooldown = false;
        document.addEventListener(
          "wheel",
          function (e) {
            e.preventDefault();
            if (animating || wheelCooldown) return;
            wheelCooldown = true;
            setTimeout(function () {
              wheelCooldown = false;
            }, 900);
            if (e.deltaY > 0 || e.deltaX > 0) {
              goTo(current + 1);
            } else {
              goTo(current - 1);
            }
          },
          { passive: false },
        );

        /* ── Touch swipe navigation ───────────────────────────────────────── */
        let touchStartX = null;
        let touchStartY = null;

        document.addEventListener(
          "touchstart",
          function (e) {
            touchStartX = e.touches[0].clientX;
            touchStartY = e.touches[0].clientY;
          },
          { passive: true },
        );

        document.addEventListener(
          "touchend",
          function (e) {
            if (touchStartX === null) return;
            const dx = touchStartX - e.changedTouches[0].clientX;
            const dy = touchStartY - e.changedTouches[0].clientY;
            // Only respond if horizontal swipe is dominant
            if (Math.abs(dx) > Math.abs(dy) && Math.abs(dx) > 40) {
              if (animating) return;
              if (dx > 0) {
                goTo(current + 1); // swipe left: next
              } else {
                goTo(current - 1); // swipe right: prev
              }
            }
            touchStartX = null;
            touchStartY = null;
          },
          { passive: true },
        );

        /* ── Boot ─────────────────────────────────────────────────────────── */
        init();
      })();
    </script>
  </body>
</html>
