:root {
            --primary: #48b6e9;
            --primary-soft: rgba(72, 182, 233, 0.1);
            --deep: #1d1d1f;
            --ghost: #f5f5f7;
            --snow: #ffffff;
            --ink: #424245;
            --border: #d2d2d7;
            --shadow: 0 12px 40px rgba(0,0,0,0.08);
            --radius: 14px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--deep);
            background-color: var(--snow);
            word-break: break-word;
            overflow-x: hidden;
        }

        .jacket {
            width: 100%;
            position: relative;
        }

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

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

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

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

        .guide {
            text-decoration: none;
            color: var(--ink);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.25s ease;
            position: relative;
        }

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

        .guide.active {
            color: var(--primary);
        }

        .guide.active::after {
            content: '';
            position: absolute;
            bottom: -22px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
        }

        /* Hero: Cover - Split Diagonal */
        .cover {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 64px;
            background: var(--ghost);
            overflow: hidden;
        }

        .canvas {
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: var(--primary);
            clip-path: polygon(25% 0, 100% 0, 100% 100%, 0% 100%);
            z-index: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .spread {
            max-width: 1400px;
            width: 100%;
            margin: 0 auto;
            padding: 0 30px;
            display: flex;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }

        .sheath-prose {
            flex: 1;
            min-width: 320px;
            padding-right: 60px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .sheath-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        .topic-folder {
            font-size: clamp(32px, 5vw, 64px);
            line-height: 1.1;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 24px;
            color: var(--deep);
        }

        .prose-cover {
            font-size: clamp(18px, 2vw, 22px);
            color: var(--ink);
            max-width: 600px;
            margin-bottom: 40px;
        }

        .batch-press {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .stamp-primary {
            background: var(--primary);
            color: white;
            padding: 18px 36px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            box-shadow: 0 10px 30px rgba(72, 182, 233, 0.3);
            border: none;
            cursor: pointer;
        }

        .stamp-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 40px rgba(72, 182, 233, 0.4);
        }

        .plate-cover {
            width: 120%;
            border-radius: var(--radius);
            box-shadow: -20px 20px 60px rgba(0,0,0,0.15);
            transform: perspective(1000px) rotateY(-15deg);
        }

        /* Main Content Structure */
        .binder {
            max-width: 1400px;
            margin: 0 auto;
            padding: 100px 30px;
        }

        .topic-folder {
            font-size: 42px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 20px;
            color: var(--deep);
        }

        .prose-intro {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 60px;
            font-size: 18px;
            color: var(--ink);
        }

        /* Grid: Folio -> Memos */
        .folio {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 80px;
        }

        .memo {
            background: var(--snow);
            padding: 40px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .memo:hover {
            transform: translateY(-8px);
            border-color: var(--primary);
            box-shadow: var(--shadow);
        }

        .glyph-box {
            width: 56px;
            height: 56px;
            background: var(--primary-soft);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }

        .topic-memo {
            font-size: 24px;
            font-weight: 600;
        }

        /* Collaboration Comparison Section */
        .folder-alt {
            background: #000;
            color: #fff;
            padding: 100px 30px;
            border-radius: 40px;
            margin: 40px 0;
            overflow: hidden;
        }

        .sheet-wide {
            display: flex;
            align-items: center;
            gap: 60px;
            flex-wrap: wrap;
        }

        .sheet-wide .prose {
            flex: 1;
            min-width: 300px;
        }

        .sheet-wide .plate-wrap {
            flex: 1.5;
            min-width: 320px;
            position: relative;
        }

        .plate-collab {
            width: 100%;
            border-radius: 10px;
            box-shadow: 0 0 50px rgba(72, 182, 233, 0.4);
        }

        /* Capabilities Section */
        .capability-article {
            padding: 80px 0;
        }

        .grid-gallery {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
            align-items: center;
        }

        .plate-full {
            width: 100%;
            border-radius: var(--radius);
            object-fit: cover;
        }

        /* Footer: Tail */
        .tail {
            background: var(--ghost);
            padding: 80px 0 40px;
            border-top: 1px solid var(--border);
        }

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

        .margin-topic {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 24px;
            color: var(--deep);
        }

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

        .knot-tail {
            text-decoration: none;
            color: var(--ink);
            font-size: 14px;
            transition: color 0.25s ease;
        }

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

        .rule-tail {
            grid-column: 1 / -1;
            height: 1px;
            background: var(--border);
            margin: 40px 0;
        }

        .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;
        }

        /* Editorial Aside */
        .editorial-aside {
            background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
            padding: 60px 40px;
            border-radius: var(--radius);
            margin-top: 60px;
            border: 1px solid rgba(72, 182, 233, 0.2);
        }

        /* Responsive Adjustments */
        @media (max-width: 1024px) {
            .canvas { width: 45%; }
            .plate-cover { width: 100%; transform: none; }
        }

        @media (max-width: 768px) {
            .canvas { display: none; }
            .sheath-prose { padding-right: 0; text-align: center; }
            .batch-press { justify-content: center; }
            .spread { padding: 60px 20px; }
            .grid-gallery { grid-template-columns: 1fr; }
            .ribbon { height: auto; padding: 15px; flex-direction: column; gap: 15px; }
            .scroll { justify-content: center; gap: 15px; }
            .topic-folder { font-size: 32px; }
        }

.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;
        }