/* CSS Variables matching main design system */
        :root {
            --primary: #48b6e9;
            --primary-soft: rgba(72, 182, 233, 0.1);
            --shadow: 0 12px 40px rgba(0,0,0,0.08);
            --shadow-rich: 0 15px 35px rgba(72, 182, 233, 0.15), 0 5px 15px rgba(0, 0, 0, 0.05);
            --radius: 14px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: #1d1d1f;
            background-color: #ffffff;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 100% Class Coverage - Navigation & Shell components */
        .jacket {
            width: 100%;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .crest {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.08);
            z-index: 1000;
            padding: 0 24px;
        }

        .ribbon {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 64px;
            flex-wrap: wrap;
        }

        .seal {
            display: flex;
            align-items: center;
            height: 100%;
        }

        .seal img {
            height: 32px;
            width: auto;
        }

        .scroll {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .guide {
            color: #1d1d1f;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.25s ease;
        }

        .guide:hover {
            color: #48b6e9;
            background: rgba(72, 182, 233, 0.08);
        }

        .guide.active {
            color: #ffffff;
            background: #48b6e9;
        }

        /* Main Content Binder */
        .binder {
            padding-top: 64px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        /* Structural folder representing sections */
        .folder {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 60px;
            padding: 100px 24px;
        }

        /* Left/Right core layout columns */
        .sheath {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .canvas {
            flex: 1;
            min-width: 320px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        /* Typography */
        .bullet-highlight {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .topic-folder {
            font-size: clamp(32px, 5vw, 56px);
            line-height: 1.15;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: #1d1d1f;
            margin-bottom: 24px;
            white-space: normal;
            word-break: keep-all;
        }

        .topic {
            font-size: clamp(28px, 4vw, 40px);
            line-height: 1.25;
            font-weight: 700;
            color: #1d1d1f;
            margin-bottom: 20px;
            white-space: normal;
        }

        .bullet-topic {
            font-size: 18px;
            font-weight: 600;
            color: #1d1d1f;
            margin-bottom: 8px;
        }

        .prose {
            font-size: 17px;
            line-height: 1.75;
            color: #8e8e93;
            margin-bottom: 30px;
        }

        .prose-small {
            font-size: 14px;
            line-height: 1.6;
            color: #8e8e93;
        }

        /* Interactive Stamp Elements (Buttons) */
        .batch {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            min-width: 0;
        }

        .stamp-primary {
            background: var(--primary);
            color: #ffffff;
            padding: 16px 32px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            box-shadow: var(--shadow-rich);
            border: none;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .stamp-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 40px rgba(72, 182, 233, 0.25);
        }

        .stamp-secondary {
            background: var(--primary-soft);
            color: var(--primary);
            padding: 16px 32px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            transition: background 0.25s ease, transform 0.25s ease;
        }

        .stamp-secondary:hover {
            background: rgba(72, 182, 233, 0.15);
            transform: translateY(-2px);
        }

        /* Section 1 Specifics: Cover */
        .cover {
            background: radial-gradient(circle at 80% 20%, rgba(72,182,233,0.08) 0%, rgba(255,255,255,0) 70%), #f5f5f7;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        /* SVG Motion Graphic & Keyframes */
        .plate-motion {
            width: 100%;
            max-width: 460px;
            height: auto;
            filter: drop-shadow(var(--shadow));
        }

        @keyframes floatEffect {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
            100% { transform: translateY(0px); }
        }

        .float-element-1 {
            animation: floatEffect 6s ease-in-out infinite;
        }

        .float-element-2 {
            animation: floatEffect 8s ease-in-out infinite 1s;
        }

        @keyframes docFlow {
            0% { stroke-dashoffset: 120; }
            100% { stroke-dashoffset: 0; }
        }

        .sync-path, .sync-path-rev {
            stroke-dasharray: 8, 8;
            animation: docFlow 4s linear infinite;
        }

        .sync-path-rev {
            animation-direction: reverse;
        }

        /* Section 2 Specifics: Spread (Scanning) */
        .spread {
            background: #ffffff;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .plate-scan {
            width: 100%;
            max-width: 400px;
            height: auto;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: #f5f5f7;
            padding: 20px;
        }

        @keyframes laserScan {
            0% { transform: translateY(-50px); }
            50% { transform: translateY(120px); }
            100% { transform: translateY(-50px); }
        }

        .laser {
            animation: laserScan 4s ease-in-out infinite;
        }

        .laser-glow {
            animation: laserScan 4s ease-in-out infinite;
            transform-origin: center;
        }

        /* Cards/Sheets for scanning points */
        .spread .batch {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            width: 100%;
            margin-top: 30px;
        }

        .sheet {
            background: #f5f5f7;
            padding: 24px;
            border-radius: var(--radius);
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.25s ease;
        }

        .sheet:hover {
            background: #ffffff;
            box-shadow: var(--shadow-rich);
            border-color: rgba(72, 182, 233, 0.2);
            transform: translateY(-4px);
        }

        .glyph-folder {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .glyph {
            width: 24px;
            height: 24px;
        }

        /* Section 3 Specifics: Folio (Voice Input) */
        .folio {
            background: #f5f5f7;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .plate-voice {
            width: 100%;
            max-width: 380px;
            height: auto;
        }

        @keyframes wavePulse {
            0% { transform: scale(1); opacity: 0.8; }
            100% { transform: scale(1.6); opacity: 0; }
        }

        .wave-ring {
            transform-origin: center;
            animation: wavePulse 3s cubic-bezier(0.215, 0.610, 0.355, 1) infinite;
        }

        .wave-ring.r2 {
            animation-delay: 1s;
        }

        .wave-ring.r3 {
            animation-delay: 2s;
        }

        .batch-bullets {
            list-style: none;
            margin-top: 20px;
        }

        .bullet {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 16px;
            color: #1d1d1f;
        }

        .glyph-small {
            width: 20px;
            height: 20px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* Section 4 Specifics: Reflow (Closing) */
        .canvas-sheath {
            background: #ffffff;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .plate-reflow {
            width: 100%;
            max-width: 440px;
            height: auto;
        }

        /* Footer tail area */
        .tail {
            background: #1d1d1f;
            color: #e5e5ea;
            padding: 80px 24px 40px;
        }

        .tail .folder {
            padding: 0 0 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .tail .sheet {
            background: transparent;
            border: none;
            padding: 0;
            box-shadow: none;
        }

        .tail .sheet:hover {
            transform: none;
            box-shadow: none;
        }

        .brand-name {
            font-size: 24px;
            font-weight: 700;
            color: #ffffff;
            display: block;
            margin-bottom: 12px;
        }

        .links-grid {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .knot {
            color: #8e8e93;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.25s ease;
        }

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

        .rule {
            width: 100%;
            height: 1px;
            background: rgba(255, 255, 255, 0.1);
            margin: 40px 0;
        }

        .copyright {
            text-align: center;
            font-size: 13px;
            color: #8e8e93;
        }

        /* Responsiveness & Mobile layout adjustments */
        @media (max-width: 1024px) {
            .folder {
                gap: 40px;
                padding: 60px 24px;
            }
        }

        @media (max-width: 768px) {
            .ribbon {
                height: auto;
                padding: 12px 0;
                justify-content: center;
                gap: 12px;
            }

            .scroll {
                justify-content: center;
                width: 100%;
                gap: 8px;
            }

            .guide {
                font-size: 13px;
                padding: 6px 12px;
            }

            .folder {
                flex-direction: column;
                gap: 30px;
                padding: 40px 16px;
            }

            .sheath, .canvas {
                width: 100%;
                min-width: 0;
            }

            .topic-folder {
                font-size: 28px;
            }

            .topic {
                font-size: 24px;
            }

            .stamp-primary, .stamp-secondary {
                width: 100%;
                text-align: center;
                padding: 14px 24px;
            }
        }

.ribbon-crest {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    word-break: break-word;
    color: var(--deep);
}
.ribbon-crest,
.ribbon-crest *,
.ribbon-crest *::before,
.ribbon-crest *::after {
    box-sizing: border-box;
}

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

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

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

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

.ribbon-crest a.ribbon-guide {
    --aisite-shell-nav-padding: 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-crest a.ribbon-guide,
.ribbon-crest a.ribbon-guide:hover,
.ribbon-crest a.ribbon-guide:focus,
.ribbon-crest a.ribbon-guide:active,
.ribbon-crest a.ribbon-guide.active,
.ribbon-crest a.ribbon-guide[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-crest{
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

.ribbon-crest .ribbon-ribbon{
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 30px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

.ribbon-crest .ribbon-seal{
            height: 32px;
            display: flex;
            align-items: center;
        }

.ribbon-crest .ribbon-seal img{
            height: 100%;
            display: block;
        }

.ribbon-crest .ribbon-scroll{
            display: flex;
            gap: 32px;
            list-style: none;
            flex-wrap: wrap;
        }

.ribbon-crest .ribbon-guide{
            text-decoration: none;
            color: #424245;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.25s ease;
            position: relative;
        }

.ribbon-crest .ribbon-guide:hover{
            color: #48b6e9;
        }

.ribbon-crest .ribbon-guide.active{
            color: #48b6e9;
        }

.ribbon-crest .ribbon-guide.active::after{
            content: '';
            position: absolute;
            bottom: -22px;
            left: 0;
            width: 100%;
            height: 2px;
            background: #48b6e9;
        }

@media (max-width: 768px){.ribbon-crest .ribbon-ribbon{ height: auto; padding: 15px; flex-direction: column; gap: 15px; }

.ribbon-crest .ribbon-scroll{ justify-content: center; gap: 15px; }}

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

.endnote-tail {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.7;
    word-break: break-word;
    color: var(--deep);
}
.endnote-tail,
.endnote-tail *,
.endnote-tail *::before,
.endnote-tail *::after {
    box-sizing: border-box;
}

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

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

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

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

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

.endnote-tail{
            background: #f5f5f7;
            padding: 80px 0 40px;
            border-top: 1px solid #d2d2d7;
        }

.endnote-tail .endnote-endnote{
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 30px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
        }

.endnote-tail .endnote-margin-topic{
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 24px;
            color: #1d1d1f;
        }

.endnote-tail .endnote-bind-links{
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

.endnote-tail .endnote-knot-tail{
            text-decoration: none;
            color: #424245;
            font-size: 14px;
            transition: color 0.25s ease;
        }

.endnote-tail .endnote-knot-tail:hover{
            color: #48b6e9;
        }

.endnote-tail .endnote-tail-bottom{
            grid-column: 1 / -1;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #86868b;
            flex-wrap: wrap;
            gap: 20px;
        }