/* ============================================================
   #ord-kgraph 樣式層（全部 scoped，不碰 body）
   1 token  2 reset  3 layout  4 graph  5 tools  6 overlay  7 nav  8 rwd
   顏色只寫 --okg-*；版面數值維持現況，後續改色改 token 即可
   ============================================================ */
#ord-kgraph {
    --okg-radius-xl: 12px;
    --okg-title-gap: 30px;
    --okg-container: 1920px;
    --okg-stage-h: max(450px, calc(100vh - 55px));
    --okg-board-w: 1920px;
    --okg-board-h: 980px;
    position: relative;
    height: var(--okg-stage-h);
    min-height: 450px;
    background: var(--okg-page-bg, var(--okg-page));
    color: var(--okg-text);
    color-scheme: dark;
}

#ord-kgraph[data-theme="dark"] {
    /* page */
    --okg-page: #0a1a33;
    --okg-page-bg: #0a1a33;
    --okg-map: #0a1a33;
    --okg-surface: #122a4a;
    --okg-surface-2: #173456;
    --okg-shadow: 0 10px 28px rgba(5, 20, 48, .4);
    --okg-scroll: rgba(180, 180, 180, .1);
    /* type */
    --okg-text: #f4f7fb;
    --okg-text-2: #d7e4f2;
    --okg-muted: #8aa4c2;
    --okg-border: #27456c;
    --okg-blue: #5eb0e5;
    --okg-blue-dark: #c5e4f7;
    /* graph */
    --okg-home: #1a73b0;
    --okg-home-dim: #3d5a7a;
    --okg-category-dim: #3a5878;
    --okg-child-dim: #3a5878;
    --okg-link: #3d5d82;
    --okg-link-mesh: #4a6d94;
    --okg-link-dim: #1a3354;
    --okg-link-mesh-dim: #152a46;
    --okg-label: #e8eef4;
    --okg-label-dim: #6b86a3;
    --okg-label-halo: #0a1a33;
    --okg-active: #7ab8de;
    --okg-active-label: #f4f7fb;
    --okg-chip-cat-bg: #173456;
    --okg-chip-cat-fg: #e8f0f8;
    --okg-chip-cat-dim-bg: #122a4a;
    /* chrome */
    --okg-tool-bg: #153050;
    --okg-tool-border: #2d4f78;
    --okg-tool-fg: #e2e8f0;
    --okg-tool-hover: #1c3c60;
    --okg-overlay-bg: #102844;
    --okg-overlay-close: #1c3c60;
    --okg-cta: #1a73b0;
    --okg-section-line: #2d4f78;
    --okg-related-bg: #153050;
    --okg-tag-bg: #1c3c60;
    --okg-tag-fg: #8ec5ea;
    /* nav tree */
    --okg-tree-hover: rgba(120, 180, 255, .08);
    --okg-tree-on: rgba(94, 176, 229, .2);
    --okg-tree-current: rgba(120, 180, 255, .06);
    --okg-tree-item: #d7e4f2;
    --okg-tree-parent: #f4f7fb;
    --okg-tree-kid: #f1f5f9;
    --okg-tree-path: #5eb0e5;
    --okg-tree-active: #5eb0e5;
    --okg-tree-caret: #7a96b4;
    --okg-tree-rail: #3d5d82;
    --okg-tree-dot: #5a7a9a;
    --okg-tree-dim: #7a96b4;
    --okg-tree-dim-ico: #3a5878;
}

#ord-kgraph[data-theme="light"] {
    color-scheme: light;
    /* page */
    --okg-page: #f7f7f9;
    --okg-page-bg: linear-gradient(180deg, #ffffff 0%, #f5f5f7 38%, #ececf0 72%, #e4e4ea 100%);
    --okg-map: #f7f7f9;
    --okg-surface: #fff;
    --okg-surface-2: #f7f8fa;
    --okg-shadow: 0 8px 24px rgba(15, 23, 42, .06);
    --okg-scroll: rgba(140, 140, 140, .09);
    /* type */
    --okg-text: #1e293b;
    --okg-text-2: #334155;
    --okg-muted: #64748b;
    --okg-border: #e2e8f0;
    --okg-blue: #1968a3;
    --okg-blue-dark: #0f3f66;
    /* graph */
    --okg-home: #1968a3;
    --okg-home-dim: #c5cbd3;
    --okg-category-dim: #d5d8dc;
    --okg-child-dim: #d9dde3;
    --okg-link: #c3ced8;
    --okg-link-mesh: #d0d7de;
    --okg-link-dim: #e6e9ed;
    --okg-link-mesh-dim: #ebecee;
    --okg-label: #4b5563;
    --okg-label-dim: #b8bec6;
    --okg-label-halo: #f7f7f9;
    --okg-active: #96aabd;
    --okg-active-label: #444;
    --okg-chip-cat-bg: #fff;
    --okg-chip-cat-fg: #1968a3;
    --okg-chip-cat-dim-bg: #f4f5f7;
    /* chrome */
    --okg-tool-bg: #fff;
    --okg-tool-border: #d5dbe3;
    --okg-tool-fg: #4a5b70;
    --okg-tool-hover: #f7f8fa;
    --okg-overlay-bg: #fff;
    --okg-overlay-close: #f1f3f5;
    --okg-cta: #1968a3;
    --okg-section-line: #d5dbe3;
    --okg-related-bg: #f4f6f8;
    --okg-tag-bg: #fff;
    --okg-tag-fg: #1968a3;
    /* nav tree */
    --okg-tree-hover: #f7f8fa;
    --okg-tree-on: #f0f4f8;
    --okg-tree-current: transparent;
    --okg-tree-item: #334155;
    --okg-tree-parent: #1e293b;
    --okg-tree-kid: #1e293b;
    --okg-tree-path: #1968a3;
    --okg-tree-active: #5eb0e5;
    --okg-tree-caret: #94a3b8;
    --okg-tree-rail: #e2e8f0;
    --okg-tree-dot: #cbd5e1;
    --okg-tree-dim: #94a3b8;
    --okg-tree-dim-ico: #cbd5e1;
}

/* ============================================================
   2. Reset（只作用在元件內）
   ============================================================ */
#ord-kgraph *,
#ord-kgraph *::before,
#ord-kgraph *::after {
    box-sizing: border-box;
}

#ord-kgraph button {
    appearance: none;
    -webkit-appearance: none;
    display: inline-block;
    width: auto;
    height: auto;
    min-height: 0;
    max-width: none;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
    box-shadow: none;
    font: inherit;
    color: inherit;
    line-height: inherit;
    letter-spacing: inherit;
    text-transform: none;
    text-align: inherit;
    outline: none;
    cursor: pointer;
}

#ord-kgraph a {
    color: inherit;
    text-decoration: none !important;
    font: inherit;
}

#ord-kgraph h1,
#ord-kgraph h2,
#ord-kgraph h3,
#ord-kgraph p {
    margin: 0;
    padding: 0;
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;
    letter-spacing: inherit;
    font-family: inherit !important;
    color: inherit;
}

/* ============================================================
   3. Layout：shell、左欄、拓樸舞台、滿版
   ============================================================ */
#ord-kgraph .ord-kgraph-shell {
    position: relative;
    z-index: 1;
    width: min(100%, var(--okg-container));
    height: 100%;
    margin: 0 auto;
    padding: 2vw;
    display: grid;
    grid-template-columns: minmax(260px, min(18%, 280px)) minmax(0, 1fr);
    gap: 2vw;
    align-items: stretch;
}

#ord-kgraph .ord-kgraph-workspace {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    min-width: 0;
    min-height: 0;
    height: 100%;
    overflow: visible;
    align-items: stretch;
}

#ord-kgraph .ord-kgraph-hero {
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    height: 100%;
    padding: 0;
}

#ord-kgraph .ord-kgraph-map {
    position: relative;
    min-width: 0;
    height: 100%;
    overflow: hidden;
}

#ord-kgraph .geo-nav-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
    padding: 16px 12px;
    margin: 0;
    background: var(--okg-surface);
    border: 1px solid var(--okg-border);
    border-radius: var(--okg-radius-xl);
    box-shadow: var(--okg-shadow);
    color: var(--okg-text);
}

#ord-kgraph .geo-nav-toggle,
#ord-kgraph .geo-nav-mask {
    display: none;
}

#ord-kgraph .ord-kgraph-stage {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    overflow: hidden;
    touch-action: none;
    user-select: none;
}

#ord-kgraph .ord-kgraph-board {
    position: absolute;
    left: 0;
    top: 0;
    width: var(--okg-board-w);
    height: var(--okg-board-h);
    transform-origin: 0 0;
}

#ord-kgraph .ord-kgraph-svg {
    width: 100%;
    height: 100%;
    min-height: 0;
    display: block;
    cursor: grab;
    overflow: visible;
}

#ord-kgraph .ord-kgraph-svg:active {
    cursor: grabbing;
}

#ord-kgraph:fullscreen,
#ord-kgraph:-webkit-full-screen,
#ord-kgraph.is-fullbleed {
    width: 100vw;
    height: 100vh;
    min-height: 100vh;
    --okg-stage-h: 100vh;
    margin: 0;
    border-radius: 0;
}

#ord-kgraph.is-fullbleed {
    position: fixed;
    inset: 0;
    z-index: 9999;
}

/* ============================================================
   4. Graph：連線、節點、標籤、chip
   ============================================================ */
/* links */
#ord-kgraph .ord-kgraph-link {
    fill: none;
    stroke: var(--okg-link);
    stroke-width: 0.5;
    transition: stroke .2s ease;
}

#ord-kgraph .ord-kgraph-link.ord-kgraph-is-mesh {
    stroke: var(--okg-link-mesh);
    stroke-dasharray: 4 4;
    stroke-opacity: .16;
}

#ord-kgraph .ord-kgraph-link.ord-kgraph-is-dim {
    stroke: var(--okg-link-dim);
}

#ord-kgraph .ord-kgraph-link.ord-kgraph-is-mesh:not(.ord-kgraph-is-dim):not(.ord-kgraph-is-on) {
    stroke-opacity: .85;
}

#ord-kgraph .ord-kgraph-link.ord-kgraph-is-mesh.ord-kgraph-is-dim {
    stroke: var(--okg-link-mesh-dim);
    stroke-opacity: .08;
}

#ord-kgraph .ord-kgraph-link.ord-kgraph-is-on {
    stroke: var(--okg-active);
    stroke-width: 1;
    stroke-opacity: 1;
}

/* nodes / dots */
#ord-kgraph .ord-kgraph-node {
    cursor: pointer;
}

#ord-kgraph .ord-kgraph-node foreignObject {
    overflow: visible;
}

#ord-kgraph .ord-kgraph-dot {
    stroke: var(--okg-map);
    stroke-width: 1.5;
    transition: fill .2s ease;
}

#ord-kgraph .ord-kgraph-node.ord-kgraph-kind-child.ord-kgraph-is-dim .ord-kgraph-dot {
    fill: var(--okg-child-dim);
}

#ord-kgraph .ord-kgraph-dot-ripple {
    fill: none;
    stroke-width: 1.5;
    opacity: 0;
    pointer-events: none;
    transform-box: fill-box;
    transform-origin: center;
}

#ord-kgraph .ord-kgraph-kind-child.ord-kgraph-is-on .ord-kgraph-dot-ripple {
    animation: okg-dot-ripple 2.4s ease-out infinite;
}

#ord-kgraph .ord-kgraph-kind-child.ord-kgraph-is-on .ord-kgraph-dot-ripple.is-delay {
    animation-delay: 1.2s;
}

@keyframes okg-dot-ripple {
    0% {
        transform: scale(1);
        opacity: .62;
    }
    55% {
        transform: scale(1.85);
        opacity: .18;
    }
    100% {
        transform: scale(2.2);
        opacity: 0;
    }
}

/* labels */
#ord-kgraph .ord-kgraph-node-label {
    font-size: 15px;
    fill: var(--okg-label);
    pointer-events: none;
    paint-order: stroke fill;
    stroke: var(--okg-label-halo);
    stroke-width: 4px;
    stroke-linejoin: round;
}

#ord-kgraph .ord-kgraph-node:hover .ord-kgraph-node-label {
    fill: var(--okg-blue);
}

#ord-kgraph[data-theme="light"] .ord-kgraph-node:hover .ord-kgraph-node-label,
#ord-kgraph[data-theme="light"] .ord-kgraph-node.ord-kgraph-is-dim:hover .ord-kgraph-node-label {
    fill: #111;
    font-weight: 700;
}

#ord-kgraph .ord-kgraph-node.ord-kgraph-is-dim .ord-kgraph-node-label {
    fill: var(--okg-label-dim);
}

#ord-kgraph .ord-kgraph-kind-child.ord-kgraph-is-related .ord-kgraph-node-label,
#ord-kgraph .ord-kgraph-kind-child.ord-kgraph-is-on .ord-kgraph-node-label {
    fill: var(--okg-active-label);
}

#ord-kgraph .ord-kgraph-kind-child.ord-kgraph-is-on .ord-kgraph-node-label {
    font-weight: 700;
}

/* chips */
#ord-kgraph .ord-kgraph-chip {
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    font-family: inherit;
    white-space: nowrap;
    user-select: none;
}

#ord-kgraph .ord-kgraph-chip-home {
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    padding: 8px 18px;
    border-radius: 12px;
    background: var(--okg-home);
    color: #fff;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.5;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .2);
}

#ord-kgraph .ord-kgraph-chip-home-sub {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: .04em;
    color: rgba(255, 255, 255, .82);
}

#ord-kgraph .ord-kgraph-kind-home.ord-kgraph-is-dim .ord-kgraph-chip-home {
    background: var(--okg-home-dim);
    box-shadow: none;
}

#ord-kgraph .ord-kgraph-chip-cat {
    gap: 8px;
    padding: 0 18px 0 14px;
    border-radius: 12px;
    background: var(--okg-chip-cat-bg);
    color: var(--okg-tree-parent);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
}

#ord-kgraph .ord-kgraph-chip-icon {
    display: grid;
    place-items: center;
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    border-radius: 7px;
    color: #fff;
}

#ord-kgraph .ord-kgraph-chip-icon svg {
    width: 22px;
    height: 22px;
    stroke-width: 1.8;
}

#ord-kgraph .ord-kgraph-chip-icon.is-ai svg {
    transform: translateY(2px);
}

#ord-kgraph .ord-kgraph-kind-cat.ord-kgraph-is-dim .ord-kgraph-chip-cat {
    background: var(--okg-chip-cat-dim-bg);
    color: var(--okg-label-dim);
    box-shadow: none;
}

#ord-kgraph .ord-kgraph-kind-cat.ord-kgraph-is-dim .ord-kgraph-chip-icon {
    background: var(--okg-category-dim) !important;
}

#ord-kgraph .ord-kgraph-kind-cat.ord-kgraph-is-on .ord-kgraph-chip-cat {
    font-weight: 700;
    color: var(--okg-tree-parent);
    box-shadow: 0 4px 14px rgba(0, 0, 0, .18);
}

#ord-kgraph[data-theme="light"] .ord-kgraph-kind-cat:hover .ord-kgraph-chip-cat,
#ord-kgraph[data-theme="light"] .ord-kgraph-kind-cat.ord-kgraph-is-dim:hover .ord-kgraph-chip-cat {
    color: #111;
    font-weight: 700;
}

/* ============================================================
   5. 右上工具列：主題、全圖、滿版
   ============================================================ */
#ord-kgraph .ord-kgraph-tools {
    position: absolute;
    right: 14px;
    top: 14px;
    z-index: 4;
    display: flex;
    gap: 8px;
    flex-wrap: nowrap;
    justify-content: flex-end;
    align-items: center;
}

#ord-kgraph .ord-kgraph-tools button {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 32px;
    padding: 6px 12px;
    border: 1px solid var(--okg-tool-border);
    border-radius: 999px;
    background: var(--okg-tool-bg);
    color: var(--okg-tool-fg);
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
}

#ord-kgraph .ord-kgraph-tools button svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

#ord-kgraph .ord-kgraph-tools button:hover {
    background: var(--okg-tool-hover);
    color: var(--okg-blue);
}

#ord-kgraph .ord-kgraph-tools button.ord-kgraph-theme-switch {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
    justify-items: stretch;
    width: 64px;
    min-width: 64px;
    min-height: 32px;
    height: 32px;
    padding: 2px;
    gap: 0;
    overflow: hidden;
}

#ord-kgraph .ord-kgraph-tools button.ord-kgraph-theme-switch:hover {
    background: var(--okg-tool-bg);
    color: var(--okg-tool-fg);
}

#ord-kgraph .ord-kgraph-theme-slider {
    position: absolute;
    top: 2px;
    bottom: 2px;
    left: 2px;
    width: calc(50% - 2px);
    height: auto;
    border-radius: 999px;
    background: var(--okg-blue);
    box-shadow: 0 1px 4px rgba(0, 0, 0, .18);
    transition: transform .22s ease;
    pointer-events: none;
}

#ord-kgraph[data-theme="dark"] .ord-kgraph-theme-slider {
    transform: translateX(calc(100% + 2px));
}

#ord-kgraph .ord-kgraph-theme-opt {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--okg-muted);
}

#ord-kgraph .ord-kgraph-theme-opt svg {
    width: 16px;
    height: 16px;
}

#ord-kgraph[data-theme="dark"] .ord-kgraph-theme-opt[data-theme-opt="dark"],
#ord-kgraph[data-theme="light"] .ord-kgraph-theme-opt[data-theme-opt="light"] {
    color: #fff;
}

/* ============================================================
   6. Overlay：殼、標題、內文、區塊、相關頁
   ============================================================ */
#ord-kgraph .geo-overlay {
    position: absolute;
    inset: 0;
    z-index: 8;
    display: none;
    padding: 0;
}

#ord-kgraph .geo-overlay:not([hidden]) {
    display: flex;
    align-items: stretch;
}

#ord-kgraph .geo-overlay article {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    min-height: 0;
    flex: 1;
    overflow: hidden;
    padding: 3.5vw 3vw 8px;
    background: var(--okg-overlay-bg);
    border: 1px solid var(--okg-border);
    border-radius: var(--okg-radius-xl);
    box-shadow: var(--okg-shadow);
    color: var(--okg-text);
}

#ord-kgraph .geo-overlay article > button {
    position: absolute;
    right: 16px;
    top: 16px;
    z-index: 2;
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: var(--okg-overlay-close);
    color: var(--okg-text-2);
    font-size: 22px;
    line-height: 1;
}

#ord-kgraph .geo-overlay article > button:hover {
    color: var(--okg-blue);
}

/* overlay head */
#ord-kgraph .geo-overlay-head {
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 20px;
    align-items: center;
    width: 100%;
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 40px var(--okg-title-gap) 0;
}

#ord-kgraph .geo-overlay-head > div:first-child {
    display: grid;
    place-items: center;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    background: var(--tree-accent, var(--okg-blue-dark));
    color: #fff;
}

#ord-kgraph .geo-overlay-head svg {
    width: 28px;
    height: 28px;
    stroke-width: 2;
}

#ord-kgraph .geo-overlay-head h2 {
    color: #333;
    font-family: "Microsoft YaHei", "微软雅黑", "微軟正黑體", sans-serif !important;
    font-size: clamp(20px, 1.8vw, 26px);
    font-weight: 800;
    letter-spacing: .08em;
    line-height: 1.25;
}

#ord-kgraph[data-theme="dark"] .geo-overlay-head h2 {
    color: #eeeeee;
}

#ord-kgraph .geo-overlay-head p {
    margin-top: 4px;
    color: var(--okg-muted);
    font-size: 13px;
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* overlay body + scroll */
#ord-kgraph .geo-overlay-body {
    flex: 1;
    min-height: 0;
    width: 100%;
    max-width: 1150px;
    margin: 0 auto;
    overflow: auto;
    padding: 0 15px 20px 0;
    scrollbar-gutter: stable;
    scrollbar-width: thin;
    scrollbar-color: var(--okg-scroll) transparent;
}

#ord-kgraph .geo-overlay-body::-webkit-scrollbar {
    width: 6px;
}

#ord-kgraph .geo-overlay-body::-webkit-scrollbar-track {
    background: transparent;
}

#ord-kgraph .geo-overlay-body::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: var(--okg-scroll);
    border: 1px solid transparent;
    background-clip: padding-box;
}

#ord-kgraph .geo-overlay-intro {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px 55px;
}

#ord-kgraph .geo-overlay-intro p {
    flex: 1;
    min-width: 0;
    color: var(--okg-text-2);
    font-size: 17px;
}

#ord-kgraph[data-theme="dark"] .geo-overlay-intro p,
#ord-kgraph[data-theme="dark"] #ord-kgraph-overlay-sections ul {
    color: #f2f4f7;
}

#ord-kgraph .geo-overlay-intro a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    min-height: 40px;
    padding: 10px 22px;
    border-radius: 999px;
    background: var(--okg-cta);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
}

#ord-kgraph .geo-overlay-divider {
    max-width: 1360px;
    height: 16px;
    border: 0;
    margin: 10px auto 8px;
    background: radial-gradient(ellipse 140% 85% at 50% 0%, rgb(0 0 0 / 12%) 0%, rgb(0 0 0 / 4%) 50%, transparent 100%);
}

#ord-kgraph[data-theme="light"] .geo-overlay-divider {
    background: radial-gradient(ellipse 140% 85% at 50% 0%, rgb(0 0 0 / 4%) 0%, rgb(0 0 0 / 1%) 50%, transparent 100%);
}

#ord-kgraph #ord-kgraph-overlay-sections > div {
    margin: 0;
}

#ord-kgraph #ord-kgraph-overlay-sections h3 {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 24px 0;
    color: var(--okg-blue);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .02em;
    line-height: 1.4;
}

#ord-kgraph #ord-kgraph-overlay-sections h3::after {
    content: "";
    flex: 1;
    min-width: 24px;
    height: 0;
    border-top: 1px dotted var(--okg-section-line);
}

#ord-kgraph #ord-kgraph-overlay-sections ul {
    margin: 0;
    padding: 0 0 0 22px;
    color: var(--okg-text-2);
    font-size: 16px;
}

#ord-kgraph #ord-kgraph-overlay-sections li + li {
    margin-top: 6px;
}

#ord-kgraph #ord-kgraph-overlay-sections a {
    font-weight: 700;
    text-decoration: underline !important;
}

#ord-kgraph #ord-kgraph-overlay-sections a:hover {
    color: var(--okg-blue-dark);
}

#ord-kgraph .geo-overlay-foot {
    display: flex;
    justify-content: center;
    align-items: stretch;
    margin-top: auto;
    border-top: 1px solid var(--okg-border);
}

#ord-kgraph .geo-overlay-foot button {
    width: 100%;
    min-height: 48px;
    padding: 18px 8px;
    color: var(--okg-blue);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.4;
    text-align: center;
}

#ord-kgraph .geo-overlay-foot button:hover {
    color: var(--okg-blue-dark);
}

/* related pages */
#ord-kgraph .geo-related {
    display: none;
    margin-top: 8px;
    padding: 12px 18px;
    border-radius: 16px;
    background: var(--okg-related-bg);
}

#ord-kgraph .geo-related.is-on {
    display: block;
}

#ord-kgraph .geo-related h3 {
    margin: 0 0 var(--okg-title-gap);
    color: var(--okg-text-2);
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .02em;
}

#ord-kgraph .geo-related > div {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

#ord-kgraph .geo-related button {
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--okg-tag-bg);
    color: var(--okg-tag-fg);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.3;
    white-space: nowrap;
    border: 1px solid var(--okg-border);
}

#ord-kgraph .geo-related button:hover {
    color: var(--okg-blue-dark);
}

/* ============================================================
   7. 左側導覽樹
   ============================================================ */
#ord-kgraph .geo-tree {
    flex: 1;
    min-height: 0;
    overflow: auto;
    margin: 0 0 4px;
    padding: 0 0 8px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

#ord-kgraph .geo-tree::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

#ord-kgraph .geo-nav-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    flex-shrink: 0;
    margin: 0 0 12px;
    padding: 0 0 12px;
    border-bottom: 1px solid var(--okg-border);
}

#ord-kgraph .geo-nav-head h3 {
    color: var(--okg-muted);
    font-size: 15px;
    font-weight: 400;
    letter-spacing: .08em;
}

#ord-kgraph .geo-nav-head button {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    padding: 4px 8px;
    border-radius: 999px;
    color: var(--okg-muted);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.2;
}

#ord-kgraph .geo-nav-head button svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

#ord-kgraph .geo-nav-head button:hover {
    background: var(--okg-tree-hover);
    color: var(--okg-blue);
}

#ord-kgraph .geo-tree-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 8px 10px;
    border-radius: 10px;
    color: var(--okg-tree-item);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.45;
    text-align: left;
    background: transparent;
}

#ord-kgraph .geo-tree-item:hover {
    background: transparent;
}

#ord-kgraph .geo-tree-kids .geo-tree-item:hover {
    font-weight: 700;
}

#ord-kgraph .geo-tree-item.is-root {
    flex-direction: column;
    align-items: flex-start;
    margin: 0 0 10px;
    padding: 9px 10px 12px;
    color: var(--okg-tree-parent);
    font-size: 16px;
    font-weight: 700;
    gap: 3px;
}

#ord-kgraph .geo-tree-item.is-root .geo-tree-sub {
    color: var(--okg-muted);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: .16em;
    line-height: 1.2;
}

#ord-kgraph .geo-tree-item.is-root.is-on {
    background: transparent;
}

#ord-kgraph .geo-tree-item.is-root .geo-tree-ico {
    width: 26px;
    height: 26px;
    border-radius: 8px;
}

#ord-kgraph .geo-tree-group {
    margin: 0 0 2px;
}

#ord-kgraph .geo-tree-item.is-root + .geo-tree-group {
    padding-top: 6px;
}

#ord-kgraph .geo-tree-item.is-parent {
    color: var(--okg-tree-parent);
    font-size: 16px;
    font-weight: 400;
    padding: 12px 10px;
    gap: 15px;
}

#ord-kgraph .geo-tree-group.is-open {
    margin-bottom: 4px;
    padding: 0;
}

#ord-kgraph .geo-tree:has(.geo-tree-group.is-current) .geo-tree-group:not(.is-current) .geo-tree-ico {
    background: var(--okg-category-dim) !important;
}

#ord-kgraph .geo-tree:has(.geo-tree-group.is-current) .geo-tree-group:not(.is-current) .geo-tree-item,
#ord-kgraph .geo-tree:has(.geo-tree-group.is-current) .geo-tree-group:not(.is-current) .geo-tree-label {
    color: var(--okg-label-dim);
}

#ord-kgraph .geo-tree-group.is-open > .geo-tree-item.is-parent {
    background: transparent;
}

#ord-kgraph .geo-tree-group.is-open > .geo-tree-item.is-parent:hover {
    background: transparent;
}

#ord-kgraph .geo-tree-ico {
    display: grid;
    place-items: center;
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    margin-left: -5px;
    border-radius: 7px;
    background: var(--tree-accent, var(--okg-blue-dark));
    color: #fff;
}

#ord-kgraph .geo-tree-ico svg {
    width: 22px;
    height: 22px;
    stroke-width: 1.8;
}

#ord-kgraph .geo-tree-group[data-group-id="ai"] .geo-tree-ico svg {
    transform: translateY(2px);
}

#ord-kgraph .geo-tree-label {
    min-width: 0;
    flex: 1;
}

#ord-kgraph .geo-tree-caret {
    display: grid;
    place-items: center;
    margin-left: auto;
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    color: var(--okg-tree-caret);
    transform: rotate(-90deg);
    transition: transform .18s ease;
}

#ord-kgraph .geo-tree-caret svg {
    width: 14px;
    height: 14px;
}

#ord-kgraph .geo-tree-group.is-open > .geo-tree-item .geo-tree-caret {
    transform: rotate(0deg);
}

#ord-kgraph .geo-tree-kids {
    position: relative;
    display: none;
    margin: 0 0 6px 12px;
    padding: 0 0 2px 12px;
}

#ord-kgraph .geo-tree-kids::before {
    content: "";
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 1px;
    background: var(--okg-border);
}

#ord-kgraph .geo-tree-group.is-open > .geo-tree-kids {
    display: block;
}

#ord-kgraph .geo-tree-kids .geo-tree-item {
    position: relative;
    gap: 8px;
    padding: 6px 8px;
    color: var(--okg-tree-kid);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.45;
}

#ord-kgraph .geo-tree-kids:has(.geo-tree-item.is-on) .geo-tree-item:not(.is-on),
#ord-kgraph .geo-tree-kids:has(.geo-tree-item.is-on) .geo-tree-item:not(.is-on) .geo-tree-label {
    color: color-mix(in srgb, var(--okg-tree-kid) 72%, var(--okg-muted));
}

#ord-kgraph .geo-tree-kids .geo-tree-item.is-on,
#ord-kgraph .geo-tree-kids .geo-tree-item.is-on .geo-tree-label {
    color: var(--okg-tree-kid);
}

#ord-kgraph .geo-tree-kids .geo-tree-item.is-on::before {
    content: "";
    position: absolute;
    left: -12px;
    top: 50%;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--tree-accent, var(--okg-tree-active));
    transform: translate(-50%, -50%);
    pointer-events: none;
}

#ord-kgraph .geo-tree-item.is-on,
#ord-kgraph .geo-tree-item.is-on .geo-tree-label,
#ord-kgraph .geo-tree-item.is-root,
#ord-kgraph .geo-tree-item.is-root .geo-tree-label,
#ord-kgraph .geo-tree-group:has(.geo-tree-kids .geo-tree-item.is-on) > .geo-tree-item.is-parent,
#ord-kgraph .geo-tree-group:has(.geo-tree-kids .geo-tree-item.is-on) > .geo-tree-item.is-parent .geo-tree-label {
    font-weight: 700;
    background: transparent;
}

#ord-kgraph .geo-tree-item.is-on .geo-tree-ico {
    background: var(--tree-accent, var(--okg-blue));
    color: #fff;
}

/* ============================================================
   8. RWD：1100 抽屜導覽；760 彈窗縮排
   ============================================================ */
@media (max-width: 1100px) {
    /* drawer */
    #ord-kgraph .ord-kgraph-shell {
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: minmax(0, 1fr);
    }

    #ord-kgraph .ord-kgraph-hero,
    #ord-kgraph .ord-kgraph-workspace {
        grid-column: 1;
        grid-row: 1;
    }

    #ord-kgraph .ord-kgraph-hero {
        z-index: 6;
        width: min(300px, 84vw);
        height: 100%;
        padding: 0;
        transform: translateX(calc(-100% - 16px));
        transition: transform .22s ease;
        pointer-events: none;
    }

    #ord-kgraph.is-nav-open .ord-kgraph-hero {
        transform: translateX(0);
        pointer-events: auto;
    }

    #ord-kgraph .geo-nav-panel {
        max-height: none;
        height: 100%;
        padding: 12px 12px 10px 8px;
        margin: 0;
    }

    #ord-kgraph .geo-nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        left: 10px;
        top: 14px;
        z-index: 7;
        width: 36px;
        height: 36px;
        padding: 0;
        border: 1px solid var(--okg-tool-border);
        border-radius: 999px;
        background: var(--okg-tool-bg);
        color: var(--okg-tool-fg);
    }

    #ord-kgraph .geo-nav-toggle:hover {
        background: var(--okg-tool-hover);
        color: var(--okg-blue);
    }

    #ord-kgraph .geo-nav-toggle svg {
        width: 18px;
        height: 18px;
    }

    #ord-kgraph .geo-nav-toggle .geo-nav-toggle-close {
        display: none;
    }

    #ord-kgraph.is-nav-open .geo-nav-toggle .geo-nav-toggle-open {
        display: none;
    }

    #ord-kgraph.is-nav-open .geo-nav-toggle .geo-nav-toggle-close {
        display: block;
    }

    #ord-kgraph .geo-nav-mask {
        position: absolute;
        inset: 0;
        z-index: 5;
        background: rgba(0, 0, 0, .32);
    }

    #ord-kgraph.is-nav-open .geo-nav-mask {
        display: block;
    }

    #ord-kgraph:has(.geo-overlay:not([hidden])) .geo-nav-toggle,
    #ord-kgraph:has(.geo-overlay:not([hidden])) .geo-nav-mask {
        display: none;
    }

    #ord-kgraph:has(.geo-overlay:not([hidden])) .ord-kgraph-hero {
        transform: translateX(calc(-100% - 16px));
        pointer-events: none;
    }

    /* overlay / nav scale */
    #ord-kgraph .geo-overlay-head {
        grid-template-columns: 44px minmax(0, 1fr);
        padding: 0 36px var(--okg-title-gap) 0;
    }

    #ord-kgraph .geo-nav-head {
        margin-bottom: 8px;
        padding-bottom: 8px;
    }

    #ord-kgraph .geo-nav-head h3 {
        font-size: 13px;
    }

    #ord-kgraph .geo-tree-item.is-parent {
        padding: 10px 10px;
    }

    #ord-kgraph .geo-tree-item.is-root {
        font-size: 16px;
        margin-bottom: 8px;
    }

    #ord-kgraph .geo-overlay-intro a {
        min-height: 32px;
        padding: 6px 10px;
        font-size: 12px;
    }

    /* tools */
    #ord-kgraph .ord-kgraph-tools {
        top: 10px;
        right: 10px;
        max-width: calc(100% - 20px);
    }

    #ord-kgraph .ord-kgraph-tools button {
        padding: 6px 10px;
        font-size: 12px;
    }

    #ord-kgraph .ord-kgraph-tools button.ord-kgraph-theme-switch {
        padding: 2px;
        font-size: 12px;
    }
}

@media (max-width: 760px) {
    #ord-kgraph .geo-overlay-head h2 {
        font-size: 18px;
    }

    #ord-kgraph .geo-overlay-intro p {
        font-size: 15px;
    }

    #ord-kgraph .geo-overlay-body {
        padding: 0 15px 8px 0;
    }

    #ord-kgraph .geo-overlay-intro {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    #ord-kgraph .geo-related {
        padding: 14px 16px;
    }

    #ord-kgraph .geo-overlay-head {
        grid-template-columns: 36px minmax(0, 1fr);
        gap: 8px;
    }

    #ord-kgraph .geo-overlay-head > div:first-child {
        width: 36px;
        height: 36px;
    }

    #ord-kgraph .geo-overlay-head svg {
        width: 18px;
        height: 18px;
    }
}

@media (prefers-reduced-motion: reduce) {
    #ord-kgraph .ord-kgraph-kind-child.ord-kgraph-is-on .ord-kgraph-dot-ripple {
        animation: none;
    }

    #ord-kgraph .ord-kgraph-theme-slider,
    #ord-kgraph .geo-tree-caret,
    #ord-kgraph .ord-kgraph-hero {
        transition: none;
    }
}