:root {
            --color-primary: #f6d854;
            --color-primary-hover: #e5c742;
            --color-dark: #1f2937;
            --color-text: #4b5563;
            --color-text-light: #6b7280;
            --color-bg: #f9fafb;
            --color-surface: #ffffff;
            --color-border: #e5e7eb;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 8px;
            --shadow-float: 0 20px 40px -10px rgba(0, 0, 0, 0.08), 0 8px 16px -8px rgba(0, 0, 0, 0.04);
            --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.05);
            --transition: all 0.35s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --space-xs: 0.5rem;
            --space-sm: 1rem;
            --space-md: 2rem;
            --space-lg: 4rem;
            --space-xl: 6rem;
        }

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

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

        /* Typography */
        h1, h2, h3, h4, h5, h6 {
            color: var(--color-dark);
            white-space: normal;
            word-break: break-word;
            overflow-wrap: break-word;
            line-height: 1.2;
        }

        p {
            word-break: break-word;
            overflow-wrap: break-word;
            line-height: 1.8;
            margin-bottom: var(--space-sm);
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        /* Flex & Grid Utilities */
        .flex-folder {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-md);
        }

        .flex-folder > * {
            min-width: 0;
        }

        .grid-binder {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--space-md);
        }

        .center-sleeve {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 5vw;
        }

        /* Crown (Header) & Spine (Nav) */
        .crown-folder {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--color-border);
        }

        .spine {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5vw;
        }

        .spine > * {
            min-width: 0;
        }

        .crest {
            display: flex;
            align-items: center;
            height: 40px;
        }

        .crest img {
            height: 100%;
            width: auto;
        }

        .roster {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
        }

        .roster > * {
            min-width: 0;
        }

        .spine-tie {
            font-weight: 500;
            font-size: 1rem;
            color: var(--color-text);
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-sm);
        }

        .spine-tie:hover {
            color: var(--color-dark);
            background-color: rgba(0, 0, 0, 0.04);
        }

        .spine-tie.active {
            color: var(--color-dark);
            background-color: var(--color-primary);
        }

        /* Main Canvas */
        .canvas-binder {
            padding-top: 80px; /* Offset for fixed crown */
        }

        /* 1. Hero Area (card_float Prototype) */
        .cover-folder {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            padding: var(--space-lg) 5vw;
            background: linear-gradient(135deg, #fefce8 0%, #fff7d6 50%, #fefce8 100%);
            overflow: hidden;
        }

        /* Decorative Background Elements */
        .bg-shape-1 {
            position: absolute;
            top: -10%;
            right: -5%;
            width: 60vw;
            height: 60vw;
            background: radial-gradient(circle, rgba(246, 216, 84, 0.2) 0%, rgba(246, 216, 84, 0) 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .bg-shape-2 {
            position: absolute;
            bottom: -20%;
            left: 10%;
            width: 40vw;
            height: 40vw;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0) 70%);
            border-radius: 50%;
            z-index: 0;
        }

        /* The Floating Card */
        .folio-sheet {
            position: relative;
            z-index: 10;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--space-lg);
            max-width: 680px;
            box-shadow: var(--shadow-float);
            margin-left: 5vw; /* Offset from center */
            border: 1px solid rgba(255, 255, 255, 0.5);
            transform: translateY(0);
        }

        .folio-sheet:hover {
            transform: translateY(-5px);
        }

        .rubric-cover {
            font-size: clamp(2.5rem, 4vw, 4rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: var(--space-sm);
            background: linear-gradient(90deg, #1f2937 0%, #4b5563 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .prose-cover {
            font-size: 1.25rem;
            color: var(--color-text);
            margin-bottom: var(--space-md);
        }

        .stamp-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 1rem 2rem;
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--color-dark);
            background-color: var(--color-primary);
            border-radius: var(--radius-md);
            box-shadow: 0 4px 14px rgba(246, 216, 84, 0.4);
        }

        .stamp-primary:hover {
            background-color: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(246, 216, 84, 0.5);
        }

        .stamp-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 1rem 2rem;
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--color-dark);
            background-color: transparent;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-left: 1rem;
        }

        .stamp-secondary:hover {
            border-color: var(--color-dark);
            background-color: rgba(0,0,0,0.02);
        }

        /* Data UI Panel for Hero */
        .ui-preview-batch {
            position: absolute;
            right: 10vw;
            top: 50%;
            transform: translateY(-50%);
            width: 400px;
            z-index: 5;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .ui-stat-note {
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(8px);
            padding: 1.5rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
            display: flex;
            align-items: center;
            gap: 1rem;
            transform: translateX(0);
            transition: var(--transition);
            border: 1px solid rgba(255,255,255,0.6);
        }

        .ui-stat-note:hover {
            transform: translateX(-10px);
        }

        .glyph-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 2. Core Components Grid (Capability) */
        .ream-batch {
            padding: var(--space-xl) 0;
            background-color: var(--color-surface);
        }

        .rubric-folder {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: var(--space-lg);
        }

        .layout-split {
            display: flex;
            flex-wrap: wrap;
            gap: var(--space-lg);
            align-items: center;
        }
        
        .layout-split > * {
            min-width: 0;
            flex: 1 1 400px;
        }

        .slide-component {
            padding: 2rem;
            border-radius: var(--radius-lg);
            background: var(--color-bg);
            border: 1px solid transparent;
            transition: var(--transition);
            height: 100%;
        }

        .slide-component:hover {
            background: var(--color-surface);
            border-color: var(--color-border);
            box-shadow: var(--shadow-soft);
            transform: translateY(-5px);
        }

        .glyph-box {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
        }

        .plate-sleeve {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-float);
            position: relative;
        }

        .plate-sleeve::after {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(0,0,0,0.05);
            pointer-events: none;
        }

        /* 3. AI Teaser (Proof) */
        .binder-folio {
            padding: var(--space-xl) 0;
            background: linear-gradient(to bottom, var(--color-bg) 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .data-ui-canvas {
            background: #1f2937;
            border-radius: var(--radius-lg);
            padding: 3rem;
            color: white;
            position: relative;
            box-shadow: var(--shadow-float);
        }

        .data-ui-crown {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .data-ui-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-primary);
            box-shadow: 0 0 10px var(--color-primary);
        }

        .data-ui-line {
            height: 8px;
            background: rgba(255,255,255,0.1);
            border-radius: 4px;
            margin-bottom: 1rem;
            width: 100%;
        }

        .data-ui-line.w-70 { width: 70%; }
        .data-ui-line.w-40 { width: 40%; }
        .data-ui-line.highlight { background: linear-gradient(90deg, var(--color-primary), transparent); }

        /* 4. Cloud Teaser (Capability) */
        .endnote-folder {
            padding: var(--space-xl) 0;
            background-color: var(--color-surface);
        }

        .sync-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 2rem;
            position: relative;
            padding: 2rem;
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        .device-node {
            background: white;
            padding: 1.5rem;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.5rem;
            z-index: 2;
            transition: var(--transition);
        }

        .device-node:hover {
            transform: scale(1.05);
        }

        .sync-path {
            flex-grow: 1;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--color-border) 0, var(--color-border) 10px, transparent 10px, transparent 20px);
            position: relative;
        }

        .sync-path::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 15px rgba(246, 216, 84, 0.5);
        }

        /* Root (Footer) */
        .root-annex {
            background-color: var(--color-bg);
            padding: var(--space-xl) 0 var(--space-md);
            border-top: 1px solid var(--color-border);
        }

        .root-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-dark);
            margin-bottom: 1rem;
        }

        .root-links {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .root-tie {
            color: var(--color-text-light);
        }

        .root-tie:hover {
            color: var(--color-primary-hover);
        }

        .copyright-band {
            margin-top: var(--space-lg);
            padding-top: var(--space-md);
            border-top: 1px solid var(--color-border);
            text-align: center;
            color: var(--color-text-light);
            font-size: 0.875rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .ui-preview-batch {
                display: none; /* Hide floating UI on smaller screens */
            }
            .folio-sheet {
                margin: 0 auto;
                width: 100%;
                max-width: 800px;
            }
            .cover-folder {
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .rubric-cover {
                font-size: 2rem;
            }
            .spine {
                flex-direction: column;
                height: auto;
                padding: 1rem 5vw;
                gap: 1rem;
            }
            .canvas-binder {
                padding-top: 120px;
            }
            .stamp-secondary {
                margin-left: 0;
                margin-top: 1rem;
                display: block;
                width: 100%;
            }
            .stamp-primary {
                display: block;
                width: 100%;
            }
            .layout-split {
                flex-direction: column;
            }
            .sync-visual {
                flex-direction: column;
                gap: 3rem;
            }
            .sync-path {
                width: 2px;
                height: 100px;
                background: repeating-linear-gradient(0deg, var(--color-border) 0, var(--color-border) 10px, transparent 10px, transparent 20px);
            }
        }

.spine-crown-folder{
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid #e5e7eb;
        }

.spine-crown-folder .spine-spine{
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 5vw;
        }

.spine-crown-folder .spine-spine > *{
            min-width: 0;
        }

.spine-crown-folder .spine-crest{
            display: flex;
            align-items: center;
            height: 40px;
        }

.spine-crown-folder .spine-crest img{
            height: 100%;
            width: auto;
        }

.spine-crown-folder .spine-roster{
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            align-items: center;
        }

.spine-crown-folder .spine-roster > *{
            min-width: 0;
        }

.spine-crown-folder .spine-spine-tie{
            font-weight: 500;
            font-size: 1rem;
            color: #4b5563;
            padding: 0.5rem 0.75rem;
            border-radius: 8px;
        }

.spine-crown-folder .spine-spine-tie:hover{
            color: #1f2937;
            background-color: rgba(0, 0, 0, 0.04);
        }

.spine-crown-folder .spine-spine-tie.active{
            color: #1f2937;
            background-color: #f6d854;
        }

@media (max-width: 768px){.spine-crown-folder .spine-spine{
                flex-direction: column;
                height: auto;
                padding: 1rem 5vw;
                gap: 1rem;
            }}

.spine-crown-folder {
    background: rgb(255, 255, 255);
    background-image: none;
}

.annex-root-annex {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--color-text);
}
.annex-root-annex,
.annex-root-annex *,
.annex-root-annex *::before,
.annex-root-annex *::after {
    box-sizing: border-box;
}

.annex-root-annex [role="navigation"],
.annex-root-annex div,
.annex-root-annex section,
.annex-root-annex article,
.annex-root-annex aside,
.annex-root-annex p,
.annex-root-annex h1,
.annex-root-annex h2,
.annex-root-annex h3,
.annex-root-annex h4,
.annex-root-annex h5,
.annex-root-annex h6,
.annex-root-annex a {
    margin: 0;
    padding: 0;
    font: inherit;
    color: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

.annex-root-annex p,
.annex-root-annex h1,
.annex-root-annex h2,
.annex-root-annex h3,
.annex-root-annex h4,
.annex-root-annex h5,
.annex-root-annex h6 {
    text-decoration: none;
}

.annex-root-annex img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.annex-root-annex {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.annex-root-annex a,
.annex-root-annex a:hover,
.annex-root-annex a:focus,
.annex-root-annex a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.annex-root-annex .annex-grid-binder{
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }

.annex-root-annex .annex-center-sleeve{
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 5vw;
        }

.annex-root-annex{
            background-color: #f9fafb;
            padding: 6rem 0 2rem;
            border-top: 1px solid #e5e7eb;
        }

.annex-root-annex .annex-root-brand{
            font-size: 1.5rem;
            font-weight: 800;
            color: #1f2937;
            margin-bottom: 1rem;
        }

.annex-root-annex .annex-root-links{
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

.annex-root-annex .annex-root-tie{
            color: #6b7280;
        }

.annex-root-annex .annex-root-tie:hover{
            color: #e5c742;
        }

.annex-root-annex .annex-copyright-band{
            margin-top: 4rem;
            padding-top: 2rem;
            border-top: 1px solid #e5e7eb;
            text-align: center;
            color: #6b7280;
            font-size: 0.875rem;
        }