/* ==================== Variables & Resets ==================== */
        :root {
            --color-brand: #644ad4;
            --color-brand-hover: #4a33a3;
            --color-surface-dark: #121214;
            --color-surface-light: #f8f9fa;
            --color-surface-white: #ffffff;
            --color-ink-primary: #1a1a1c;
            --color-ink-secondary: #5e5e66;
            --color-ink-inverse: #ffffff;
            --color-border: #e4e4e9;
            --color-border-dark: #2c2c30;
            
            --radius-sharp: 6px;
            --radius-soft: 12px;
            
            --shadow-base: 0 2px 10px rgba(0, 0, 0, 0.05);
            --shadow-elevated: 0 12px 30px rgba(0, 0, 0, 0.08);
            --shadow-deep: 0 20px 50px rgba(0, 0, 0, 0.2);
            
            --transition-smooth: all 0.35s ease;
            --space-edge: 5vw;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--color-ink-primary);
            background-color: var(--color-surface-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        /* ==================== Core Utilities ==================== */
        .film-global {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            width: 100%;
        }

        /* Enforced Flex/Text Rules */
        .batch-flex {
            display: flex;
            flex-wrap: wrap;
        }
        .batch-flex > * {
            min-width: 0;
        }
        .ink-wrap {
            word-break: break-word;
            overflow-wrap: break-word;
            word-break: keep-all; /* Chinese optimization */
        }

        /* ==================== Header & Nav ==================== */
        .crown-top {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
        }

        .ribbon-ribbon {
            max-width: 1400px;
            margin: 0 auto;
            padding: 1rem var(--space-edge);
            justify-content: space-between;
            align-items: center;
        }

        .stamp-brand {
            display: flex;
            align-items: center;
            height: 32px;
        }
        
        .stamp-brand img {
            height: 100%;
            width: auto;
        }

        .deck-deck {
            gap: 2rem;
            align-items: center;
        }

        .knot-knot {
            text-decoration: none;
            color: var(--color-ink-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition-smooth);
            padding: 0.5rem 0;
            position: relative;
        }

        .knot-knot:hover {
            color: var(--color-brand);
        }

        .knot-knot.active {
            color: var(--color-brand);
        }

        .knot-knot.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: var(--color-brand);
            border-radius: 2px;
        }

        /* ==================== Hero (Cinematic Strip) ==================== */
        .folio-intro {
            position: relative;
            width: 100%;
            height: 60vh;
            min-height: 480px;
            max-height: 700px;
            background-color: var(--color-surface-dark);
            overflow: hidden;
            display: flex;
            align-items: flex-end; /* Align content to bottom edge */
        }

        .lens-folio {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center 20%;
            z-index: 1;
            opacity: 0.85; /* Slight dimming for text readability */
        }

        .sash-folio-overlay {
            position: relative;
            z-index: 2;
            width: 100%;
            background: linear-gradient(to top, rgba(18, 18, 20, 1) 0%, rgba(18, 18, 20, 0.8) 40%, transparent 100%);
            padding: 6rem var(--space-edge) 3rem;
        }

        .sheaf-folio-film {
            max-width: 1400px;
            margin: 0 auto;
        }

        .apex-h1 {
            color: var(--color-ink-inverse);
            font-size: clamp(2rem, 4vw, 3.5rem);
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
            white-space: normal;
            line-height: 1.2;
        }

        .ink-folio-sub {
            color: rgba(255, 255, 255, 0.8);
            font-size: clamp(1.1rem, 1.5vw, 1.25rem);
            max-width: 800px;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .batch-actions {
            gap: 1rem;
        }

        .macro-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.875rem 2rem;
            background-color: var(--color-brand);
            color: var(--color-ink-inverse);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-sharp);
            transition: var(--transition-smooth);
            border: 1px solid transparent;
        }

        .macro-primary:hover, .macro-primary:focus {
            background-color: var(--color-brand-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-elevated);
        }

        /* ==================== Capabilities Matrix ==================== */
        .tray-capability {
            padding: 6rem var(--space-edge);
            background-color: var(--color-surface-white);
        }

        .sheaf-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .apex-h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 700;
            color: var(--color-ink-primary);
            margin-bottom: 1.5rem;
            letter-spacing: -0.01em;
            white-space: normal;
        }

        .ink-lead {
            font-size: 1.125rem;
            color: var(--color-ink-secondary);
            margin-bottom: 3rem;
        }

        .batch-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }

        .node-feature {
            background: var(--color-surface-light);
            padding: 1.5rem;
            border-radius: var(--radius-soft);
            border: 1px solid var(--color-border);
            transition: var(--transition-smooth);
        }

        .node-feature:hover {
            box-shadow: var(--shadow-elevated);
            transform: translateY(-3px);
            border-color: rgba(100, 74, 212, 0.2);
        }

        .glyph-feature {
            width: 32px;
            height: 32px;
            margin-bottom: 1rem;
            color: var(--color-brand);
        }

        .apex-h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--color-ink-primary);
        }

        .ink-desc {
            font-size: 0.95rem;
            color: var(--color-ink-secondary);
        }

        .film-media {
            position: relative;
            border-radius: var(--radius-soft);
            overflow: hidden;
            box-shadow: var(--shadow-deep);
        }

        .lens-module {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition-smooth);
        }

        .film-media:hover .lens-module {
            transform: scale(1.02);
        }

        /* ==================== Sub-topics Summary (Aside) ==================== */
        .sash-topics {
            background-color: var(--color-surface-light);
            padding: 5rem var(--space-edge);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .sheaf-topics {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2.5rem;
        }

        .slate-topic {
            background: var(--color-surface-white);
            padding: 2.5rem;
            border-radius: var(--radius-soft);
            box-shadow: var(--shadow-base);
            border: 1px solid transparent;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .slate-topic:hover {
            box-shadow: var(--shadow-elevated);
            border-color: var(--color-border);
        }

        .glyph-topic {
            width: 40px;
            height: 40px;
            margin-bottom: 1.5rem;
            fill: none;
            stroke: var(--color-ink-primary);
            stroke-width: 1.5;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .ink-topic-ink {
            color: var(--color-ink-secondary);
            margin-bottom: 2rem;
            flex-grow: 1;
        }

        .knot-bolt {
            display: inline-flex;
            align-items: center;
            color: var(--color-brand);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition-smooth);
            align-self: flex-start;
        }

        .knot-bolt::after {
            content: '→';
            margin-left: 0.5rem;
            transition: transform 0.2s ease;
        }

        .knot-bolt:hover::after {
            transform: translateX(4px);
        }

        /* ==================== Proof (Data Panel) ==================== */
        .pane-proof {
            background-color: var(--color-surface-dark);
            color: var(--color-ink-inverse);
            padding: 6rem var(--space-edge);
            text-align: center;
        }

        .sheaf-proof {
            max-width: 1000px;
            margin: 0 auto;
        }

        .apex-proof {
            color: var(--color-surface-white);
            margin-bottom: 1.5rem;
        }

        .ink-proof-lead {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.125rem;
            margin-bottom: 4rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .batch-stats {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            border-top: 1px solid var(--color-border-dark);
            padding-top: 3rem;
        }

        .node-stat {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .ink-stat-num {
            font-size: 3rem;
            font-weight: 700;
            color: var(--color-brand);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .ink-stat-pip {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.6);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* ==================== Acquire (CTA) ==================== */
        .base-acquire {
            background: linear-gradient(135deg, var(--color-surface-light) 0%, var(--color-surface-white) 100%);
            padding: 6rem var(--space-edge);
            text-align: center;
        }

        .sheaf-acquire {
            max-width: 800px;
            margin: 0 auto;
            background: var(--color-surface-white);
            padding: 4rem 2rem;
            border-radius: var(--radius-soft);
            box-shadow: var(--shadow-elevated);
            border: 1px solid var(--color-border);
        }

        .apex-acquire {
            margin-bottom: 1rem;
        }

        .ink-acquire-ink {
            color: var(--color-ink-secondary);
            margin-bottom: 2.5rem;
            font-size: 1.1rem;
        }

        .macro-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.875rem 2rem;
            background-color: transparent;
            color: var(--color-ink-primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            border-radius: var(--radius-sharp);
            transition: var(--transition-smooth);
            border: 1px solid var(--color-border);
            margin-left: 1rem;
        }

        .macro-secondary:hover {
            border-color: var(--color-ink-primary);
            background-color: var(--color-surface-light);
        }

        /* ==================== Footer ==================== */
        .heel-bottom {
            background-color: var(--color-surface-white);
            border-top: 1px solid var(--color-border);
            padding: 4rem var(--space-edge) 2rem;
        }

        .sheaf-heel {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .apex-brand-ink {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-ink-primary);
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

        .bind-copyright {
            color: var(--color-ink-secondary);
            font-size: 0.875rem;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .sheaf-grid {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            .batch-features {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .ribbon-ribbon {
                flex-direction: column;
                gap: 1rem;
                padding: 1rem;
            }
            .deck-deck {
                flex-wrap: wrap;
                justify-content: center;
                gap: 1rem;
            }
            .folio-intro {
                height: auto;
                min-height: 80vh;
            }
            .sash-folio-overlay {
                padding: 4rem 1.5rem 2rem;
            }
            .batch-actions {
                flex-direction: column;
            }
            .macro-primary, .macro-secondary {
                width: 100%;
                margin-left: 0;
                margin-bottom: 0.5rem;
            }
            .tray-capability, .sash-topics, .pane-proof, .base-acquire {
                padding: 4rem 1.5rem;
            }
            .sheaf-acquire {
                padding: 2rem 1.5rem;
            }
        }

.ribbon-crown-top {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-ink-primary);
}
.ribbon-crown-top,
.ribbon-crown-top *,
.ribbon-crown-top *::before,
.ribbon-crown-top *::after {
    box-sizing: border-box;
}

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

.ribbon-crown-top p,
.ribbon-crown-top h1,
.ribbon-crown-top h2,
.ribbon-crown-top h3,
.ribbon-crown-top h4,
.ribbon-crown-top h5,
.ribbon-crown-top h6 {
    text-decoration: none;
}

.ribbon-crown-top img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

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

.ribbon-crown-top a.ribbon-knot-knot {
    --aisite-shell-nav-padding: 0.5rem 0;
    --aisite-shell-nav-margin: 0;
    --aisite-shell-nav-line-height: normal;
    --aisite-shell-nav-display: inline;
    --aisite-shell-nav-height: auto;
    --aisite-shell-nav-min-height: auto;
}

.ribbon-crown-top a.ribbon-knot-knot,
.ribbon-crown-top a.ribbon-knot-knot:hover,
.ribbon-crown-top a.ribbon-knot-knot:focus,
.ribbon-crown-top a.ribbon-knot-knot:active,
.ribbon-crown-top a.ribbon-knot-knot.active,
.ribbon-crown-top a.ribbon-knot-knot[aria-current="page"] {
    background: transparent;
    border: none;
    border-bottom: none;
    box-shadow: none;
    outline: none;
    text-decoration: none;
    padding: var(--aisite-shell-nav-padding, 0);
    margin: var(--aisite-shell-nav-margin, 0);
    line-height: var(--aisite-shell-nav-line-height, normal);
    display: var(--aisite-shell-nav-display, inline);
    height: var(--aisite-shell-nav-height, auto);
    min-height: var(--aisite-shell-nav-min-height, auto);
}

.ribbon-crown-top .ribbon-batch-flex{
            display: flex;
            flex-wrap: wrap;
        }

.ribbon-crown-top .ribbon-batch-flex > *{
            min-width: 0;
        }

.ribbon-crown-top{
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #e4e4e9;
        }

.ribbon-crown-top .ribbon-ribbon-ribbon{
            max-width: 1400px;
            margin: 0 auto;
            padding: 1rem 5vw;
            justify-content: space-between;
            align-items: center;
        }

.ribbon-crown-top .ribbon-stamp-brand{
            display: flex;
            align-items: center;
            height: 32px;
        }

.ribbon-crown-top .ribbon-stamp-brand img{
            height: 100%;
            width: auto;
        }

.ribbon-crown-top .ribbon-deck-deck{
            gap: 2rem;
            align-items: center;
        }

.ribbon-crown-top .ribbon-knot-knot{
            text-decoration: none;
            color: #5e5e66;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.35s ease;
            padding: 0.5rem 0;
            position: relative;
        }

.ribbon-crown-top .ribbon-knot-knot:hover{
            color: #644ad4;
        }

.ribbon-crown-top .ribbon-knot-knot.active{
            color: #644ad4;
        }

.ribbon-crown-top .ribbon-knot-knot.active::after{
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #644ad4;
            border-radius: 2px;
        }

@media (max-width: 768px){.ribbon-crown-top .ribbon-ribbon-ribbon{
                flex-direction: column;
                gap: 1rem;
                padding: 1rem;
            }

.ribbon-crown-top .ribbon-deck-deck{
                flex-wrap: wrap;
                justify-content: center;
                gap: 1rem;
            }}

.ribbon-crown-top {
    background: rgb(255, 255, 255);
    background-image: none;
}

.base-heel-bottom {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-ink-primary);
}
.base-heel-bottom,
.base-heel-bottom *,
.base-heel-bottom *::before,
.base-heel-bottom *::after {
    box-sizing: border-box;
}

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

.base-heel-bottom p,
.base-heel-bottom h1,
.base-heel-bottom h2,
.base-heel-bottom h3,
.base-heel-bottom h4,
.base-heel-bottom h5,
.base-heel-bottom h6 {
    text-decoration: none;
}

.base-heel-bottom img {
    display: block;
    max-width: 100%;
    height: auto;
    border: 0;
}

.base-heel-bottom {
    box-shadow: none;
    filter: none;
    text-shadow: none;
    background-image: none;
    border-top: none;
    border-left: none;
    border-right: none;
    outline: none;
}

.base-heel-bottom a,
.base-heel-bottom a:hover,
.base-heel-bottom a:focus,
.base-heel-bottom a:active {
    background: transparent;
    box-shadow: none;
    outline: none;
    text-decoration: none;
}

.base-heel-bottom{
            background-color: #ffffff;
            border-top: 1px solid #e4e4e9;
            padding: 4rem 5vw 2rem;
        }

.base-heel-bottom .base-sheaf-heel{
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

.base-heel-bottom .base-apex-brand-ink{
            font-size: 1.5rem;
            font-weight: 700;
            color: #1a1a1c;
            letter-spacing: -0.02em;
            margin-bottom: 1rem;
        }

.base-heel-bottom .base-bind-copyright{
            color: #5e5e66;
            font-size: 0.875rem;
        }