:root {
            --bg-paper: #F3F1EC; 
            --text-main: #191919; 
            --text-muted: #666666;
            --accent-orange: #A33B20; 
            --accent-light: #e6bba8;
            --border-color: rgba(25, 25, 25, 0.15);
            
            --font-display: 'Oswald', sans-serif;
            --font-body: 'Lora', serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            background-color: var(--bg-paper);
            color: var(--text-main);
            font-family: var(--font-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            line-height: 1.6;
        }

        .scrolly-container {
            position: relative;
            height: 250vh; 
            width: 100%;
        }

        .sticky-hero {
            position: sticky;
            top: 0;
            width: 100%;
            height: 100vh;
            overflow: hidden; 
            display: flex;
            flex-direction: column;
            justify-content: space-between; 
            background-color: var(--bg-paper);
        }

        .hero-data {
            position: relative;
            z-index: 10;
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: clamp(55vh, 60vh, 65vh);
            padding: 20px 20px 0;
        }

        .hero-header {
            font-family: var(--font-body);
            font-size: clamp(0.70rem, 0.9vw, 0.85rem);
            font-weight: 400;
            letter-spacing: 0.15em;
            color: var(--text-muted);
            text-transform: uppercase;
            text-align: center;
            margin-bottom: clamp(2rem, 5vh, 4rem);
            opacity: 0;
            transform: translateY(10px);
            transition: opacity 1s ease, transform 1s ease;
        }

        .hero-header.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .hero-number-wrapper {
            display: flex;
            flex-direction: column;
            align-items: center;
            line-height: 0.9;
            margin-bottom: clamp(1.5rem, 3vh, 2rem);
        }

        .hero-number {
            font-family: var(--font-display);
            font-size: clamp(6rem, 18vh, 16rem); 
            font-weight: 300;
            letter-spacing: -0.04em;
            color: var(--text-main);
            font-variant-numeric: tabular-nums;
        }

        .hero-unit {
            font-family: var(--font-body);
            font-size: clamp(0.85rem, 1.5vw, 1rem);
            font-weight: 400;
            letter-spacing: 0.3em;
            color: var(--text-muted);
            margin-top: 1rem;
            text-transform: uppercase;
        }

        .skyline-stage {
            position: relative;
            width: 100%;
            height: clamp(220px, 30vh, 320px);
            z-index: 1;
            pointer-events: none;
            margin-top: auto; 
        }

        .skyline-svg {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: visible; 
        }

        .grid-path {
            fill: none;
            stroke: rgba(25, 25, 25, 0.1);
            opacity: 0; 
        }

        .arch-element {
            transform-origin: bottom;
            transform: scaleY(0); 
        }

        .bldg-bg {
            fill: transparent;
            stroke: rgba(25, 25, 25, 0.2);
            stroke-width: 0.5;
        }

        .bldg-mg {
            fill: rgba(243, 241, 236, 0.85); 
            stroke: rgba(25, 25, 25, 0.4);
            stroke-width: 0.5;
        }

        .bldg-fg {
            fill: var(--bg-paper);
            stroke: rgba(25, 25, 25, 0.85);
            stroke-width: 0.75;
        }
        
        .bldg-accent {
            fill: none;
            stroke: var(--accent-orange);
            stroke-width: 0.75;
            opacity: 0.8;
        }

        .bldg-detail {
            fill: none;
            stroke: rgba(25, 25, 25, 0.35);
            stroke-width: 0.25;
        }

        .fade-bottom {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 15vh; 
            background: linear-gradient(to top, var(--bg-paper) 0%, transparent 100%);
            z-index: 2;
        }

        .article-container {
            max-width: 720px;
            margin: 0 auto;
            padding: 80px 20px;
            position: relative;
            background-color: var(--bg-paper);
            z-index: 20; 
        }

        .article-title {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 400;
            line-height: 1.1;
            margin-bottom: 2rem;
            color: var(--text-main);
            text-align: center;
            text-transform: uppercase;
        }

        .nowrap {
            white-space: nowrap;
        }

        .article-meta {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 4rem;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 2rem;
            text-transform: uppercase;
            letter-spacing: 0.1em;
        }

        .article-content p, .article-content ul {
            font-size: 1.15rem;
            margin-bottom: 1.8rem;
            color: #333;
        }
        
        .article-content ul {
            padding-left: 2rem;
        }

        .article-content > p:first-of-type::first-letter {
            font-family: var(--font-display);
            font-size: 4.5rem;
            float: left;
            margin-top: -10px;
            margin-right: 12px;
            line-height: 1;
            color: var(--accent-orange);
        }

        .article-subtitle {
            font-family: var(--font-display);
            font-size: 2rem;
            font-weight: 400;
            margin: 4rem 0 1.5rem;
            color: var(--text-main);
            border-top: 1px solid var(--border-color);
            padding-top: 2rem;
        }

        .pull-quote {
            font-family: var(--font-display);
            font-size: 1.8rem;
            line-height: 1.3;
            color: var(--accent-orange);
            margin: 3rem -40px;
            padding: 2rem 40px;
            border-left: 4px solid var(--accent-orange);
            background-color: rgba(163, 59, 32, 0.05);
        }
        
        .fullbleed {
            width: 100vw;
            position: relative;
            left: 50%;
            right: 50%;
            margin-left: -50vw;
            margin-right: -50vw;
            background: #fff; 
            padding: 40px 0;
            margin-top: 3rem;
            margin-bottom: 3rem;
        }

        .image-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            max-width: 1200px; 
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .image-grid img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: block;
        }

        .interactive-chart-container {
            margin: 4rem 0;
            padding: 2rem 0;
            border-top: 1px dashed var(--border-color);
            border-bottom: 1px dashed var(--border-color);
        }

        .chart-title {
            font-family: var(--font-display);
            font-size: 1.5rem;
            text-align: center;
            margin-bottom: 2rem;
            color: var(--text-main);
            text-transform: uppercase;
        }

        .reading-progress-container {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: rgba(25, 25, 25, 0.05);
            z-index: 1000;
        }

        .reading-progress-bar {
            height: 100%;
            background: var(--accent-orange);
            width: 0%;
        }

        .article-footer {
            margin-top: 5rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        .author-credit {
            text-align: right; 
            margin-top: 25px; 
            font-weight: 600; 
            font-family: var(--font-body);
            font-size: 1.1rem;
            color: var(--text-main);
        }

        .skyline-svg-mobile { display: none; }

        @media (max-width: 768px) {
            body { width: 100%; max-width: 100%; }
            .scrolly-container { height: 270vh; }
            .sticky-hero { height: 100vh; min-height: 0; display: block; overflow: hidden; }
            .hero-data { position: absolute; top: 0; left: 0; width: 100%; height: 54vh; padding: 0 16px; justify-content: flex-start; }
            .hero-header { width: min(92vw, 370px); margin-top: 7vh; margin-bottom: 3.2vh; font-size: clamp(0.68rem, 2.9vw, 0.78rem); }
            .hero-number-wrapper { margin: 0; width: 100%; }
            .hero-number { font-size: clamp(5.2rem, 24vw, 7.1rem); line-height: 0.88; }
            .hero-unit { margin-top: 0.8rem; font-size: 0.76rem; }
            .skyline-stage { position: absolute; left: 0; bottom: 0; width: 100%; height: 46vh; min-height: 260px; max-height: none; margin: 0; }
            .skyline-svg-desktop { display: none; }
            .skyline-svg-mobile { display: block; position: absolute; left: 0; bottom: 0; width: 100%; height: 100%; }
            .fade-bottom { height: 8vh; }
            .article-container { padding: 58px 18px 68px; }
            .article-title { font-size: clamp(1.5rem, 7.2vw, 2rem); }
            .pull-quote { margin: 2.2rem 0; padding: 1.4rem 18px; font-size: 1.4rem; border-left-width: 3px; }
            .image-grid { grid-template-columns: 1fr; }
            
            .donut-mobile-legend { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 12px; width: 100%; margin-top: 0.5rem; }
            .donut-mobile-item { display: grid; grid-template-columns: 9px minmax(0, 1fr); column-gap: 8px; align-items: start; padding: 10px 8px; border-top: 1px solid var(--border-color); }
            .donut-mobile-swatch { width: 9px; height: 9px; margin-top: 5px; border-radius: 50%; }
            .donut-mobile-label { display: block; font-family: var(--font-display); font-size: 0.82rem; color: var(--text-muted); }
            .donut-mobile-value { display: block; margin-top: 3px; font-family: var(--font-display); font-size: 1.28rem; color: var(--text-main); }
        }