:root{color-scheme:light;--dq-green: #14532d;--dq-teal: #0e7490;--dq-deep-teal: #0f6b5f;--dq-bamboo: #166534;--dq-gold: #ca8a04;--dq-gold-text: #854d0e;--dq-gold-soft: #fef3c7;--dq-paper: #fafaf7;--dq-white: #ffffff;--dq-soft: #f6f7f4;--dq-ink: #27272a;--dq-muted: #52525b;--dq-faint: #71717a;--dq-line: #d4d4d8;--dq-line-soft: #e4e4e7;--dq-dark: #052e16;--dq-dark-surface: #0b3a25;--dq-success: #15803d;--dq-warning: #b45309;--dq-error: #b91c1c;--dq-info: #0369a1;--dq-color-page: var(--dq-paper);--dq-color-surface: var(--dq-white);--dq-color-surface-subtle: var(--dq-soft);--dq-color-text: var(--dq-ink);--dq-color-text-muted: var(--dq-muted);--dq-color-text-faint: var(--dq-faint);--dq-color-border: var(--dq-line);--dq-color-border-subtle: var(--dq-line-soft);--dq-color-primary: var(--dq-green);--dq-color-on-primary: var(--dq-white);--dq-color-link: var(--dq-teal);--dq-color-focus: var(--dq-teal);--dq-color-accent: var(--dq-gold);--dq-color-accent-text: var(--dq-gold-text);--dq-color-accent-surface: var(--dq-gold-soft);--dq-color-code-surface: var(--dq-dark);--dq-color-code-text: var(--dq-soft);--dq-font-sans: "HarmonyOS Sans SC", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;--dq-font-latin: "Manrope", "Inter", Arial, sans-serif;--dq-font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;--dq-text-xs: .75rem;--dq-text-sm: .8125rem;--dq-text-md: .9375rem;--dq-text-base: 1rem;--dq-text-lg: 1.125rem;--dq-text-xl: 1.25rem;--dq-text-2xl: 1.5rem;--dq-text-3xl: 1.875rem;--dq-text-4xl: 2.25rem;--dq-text-5xl: 3rem;--dq-space-1: .25rem;--dq-space-2: .5rem;--dq-space-3: .75rem;--dq-space-4: 1rem;--dq-space-5: 1.25rem;--dq-space-6: 1.5rem;--dq-space-8: 2rem;--dq-space-10: 2.5rem;--dq-space-12: 3rem;--dq-space-16: 4rem;--dq-space-20: 5rem;--dq-space-24: 6rem;--dq-radius-sm: .375rem;--dq-radius-md: .5rem;--dq-radius-lg: .75rem;--dq-radius-round: 999px;--dq-shadow-sm: 0 1px 2px rgba(5, 46, 22, .08);--dq-shadow-md: 0 6px 18px rgba(5, 46, 22, .1);--dq-shadow-focus: 0 0 0 2px var(--dq-color-page), 0 0 0 4px var(--dq-color-focus);--dq-control-sm: 2rem;--dq-control-md: 2.75rem;--dq-touch-target: 2.75rem;--dq-content-width: 48rem;--dq-page-width: 76rem;--dq-duration-fast: .12s;--dq-duration-normal: .18s;--dq-duration-slow: .26s;--dq-ease-standard: cubic-bezier(.2, 0, 0, 1);--dq-z-sticky: 20;--dq-z-dropdown: 40;--dq-z-overlay: 60;--dq-z-modal: 80;--dq-z-toast: 100}[data-dq-theme=dark]{color-scheme:dark;--dq-color-page: #052e16;--dq-color-surface: #0b3a25;--dq-color-surface-subtle: #14532d;--dq-color-text: #fafaf7;--dq-color-text-muted: #d4d4d8;--dq-color-text-faint: #a1a1aa;--dq-color-border: #166534;--dq-color-border-subtle: #14532d;--dq-color-primary: #bbf7d0;--dq-color-on-primary: #052e16;--dq-color-link: #8dd8ca;--dq-color-focus: #fbbf24;--dq-color-accent: #fbbf24;--dq-color-accent-text: #fef3c7;--dq-color-accent-surface: #713f12;--dq-color-code-surface: #071a1a;--dq-color-code-text: #f6f7f4}:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid transparent;box-shadow:var(--dq-shadow-focus)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}:root{--dq-surface: var(--dq-color-surface);--dq-font-serif: var(--dq-font-sans);--dq-font-code: var(--dq-font-mono);--dq-radius-control: var(--dq-radius-md);--dq-radius-panel: var(--dq-radius-md);--dq-shadow-panel: var(--dq-shadow-md);--dq-color-success: var(--dq-success);--dq-color-warning: var(--dq-warning);--dq-color-error: var(--dq-error);--dq-color-info: var(--dq-info)}.markdown-content{color:var(--dq-color-text);font-size:13px;line-height:1.9;overflow-wrap:anywhere}.markdown-content>:first-child{margin-top:0}.markdown-content>:last-child{margin-bottom:0}.markdown-content p{margin:0 0 1.15em}.markdown-content h2,.markdown-content h3,.markdown-content h4,.markdown-content h5{margin:1.7em 0 .65em;color:var(--dq-color-text);font-family:var(--dq-font-serif);line-height:1.4}.markdown-content h2{font-size:21px}.markdown-content h3{font-size:18px}.markdown-content h4{font-size:16px}.markdown-content h5{font-size:14px}.markdown-content strong{color:var(--dq-color-text);font-weight:750}.markdown-content a{color:var(--dq-color-link);text-decoration:underline;text-decoration-color:#19633f4d;text-underline-offset:3px}.markdown-content code{padding:.14em .38em;border-radius:4px;color:#315b52;background:#edf3ef;font-family:var(--dq-font-mono);font-size:.9em}.markdown-content pre{margin:1.25em 0;padding:15px 17px;overflow:auto;border:1px solid #dce3de;border-radius:9px;color:#2f463e;background:#f3f6f2;line-height:1.7;white-space:pre}.markdown-content pre code{padding:0;color:inherit;background:transparent;font-size:12px}.markdown-content blockquote{margin:1.2em 0;padding:10px 14px;border-left:3px solid 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#dce4de;border-radius:11px;background:linear-gradient(145deg,#fffefa,#f7faf6)}.markdown-mermaid__viewport{width:100%;min-width:0;max-width:100%;overflow-x:auto;overflow-y:hidden;overscroll-behavior-inline:contain}.markdown-mermaid__viewport:focus-visible{outline:2px solid var(--dq-color-accent);outline-offset:-2px}.markdown-mermaid__canvas{width:max(100%,var(--mermaid-natural-width, 36rem));min-width:36rem;padding:18px 20px 10px;box-sizing:border-box}.markdown-mermaid__canvas svg{width:var(--mermaid-natural-width, 100%);min-width:100%;max-width:none!important;height:auto;display:block}.markdown-mermaid__canvas .nodeLabel,.markdown-mermaid__canvas .edgeLabel{line-height:1.45}.markdown-mermaid__canvas .nodeLabel p,.markdown-mermaid__canvas .edgeLabel p{margin:0;line-height:inherit}.markdown-mermaid>figcaption{min-height:42px;padding:8px 10px 8px 14px;color:#7c8984;border-bottom:1px solid 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.markdown-learning-asset__frame{height:min(76vh,58rem);min-height:48rem}.markdown-learning-asset--seamless{width:100%;margin-block:1em 2.25em;padding:0 1em 1em;border:1px solid var(--dq-color-border-subtle);border-top:2px solid var(--dq-color-primary);border-radius:8px;background:var(--dq-color-surface);box-shadow:var(--dq-shadow-sm, 0 1px 2px rgba(5, 46, 22, .08))}.markdown-learning-asset__seamless-tools{margin-block-end:.8em;padding-block:.65em;border-bottom:1px solid var(--dq-color-border-subtle);color:var(--dq-color-text-muted);display:flex;align-items:center;justify-content:space-between;gap:1em;font-size:.74em}.markdown-learning-asset__seamless-tools span{line-height:1.5}.markdown-learning-asset__seamless-tools button{min-height:2.25rem;padding:.38rem .68rem;border:1px solid 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#cfd7d3;border-radius:8px;color:#6d7773;background:transparent;box-shadow:none}.course-learning-actions__complete:hover{color:var(--dq-deep-teal);border-color:#91b5ab;background:#f4f8f5}html[data-theme=dark] .course-learning-page,html[data-theme=dark] .course-learning-page .course-learning-dialog,html[data-theme=dark] .course-learning-toolbar,html[data-theme=dark] .course-learning-heading,html[data-theme=dark] .course-learning-dialog>.course-reader>article,html[data-theme=dark] .course-learning-dialog>.course-learning-actions{background:var(--dq-surface)}html[data-theme=dark] .course-learning-dialog>.course-reader>aside{background:#101915}html[data-theme=dark] .course-reader__catalog-search{border-color:var(--dq-line);background:#111a17}html[data-theme=dark] .course-reader__catalog-search input,html[data-theme=dark] .course-reader__module-heading strong{color:var(--dq-ink)}html[data-theme=dark] .course-reader__module-heading small,html[data-theme=dark] .course-reader__catalog-heading>span{color:var(--dq-muted)}html[data-theme=dark] .course-reader__lesson-index{color:#83928d}html[data-theme=dark] .course-reader>aside button.is-active .course-reader__lesson-index{color:var(--dq-teal)}html[data-theme=dark] .course-reader>aside button.course-reader__module-toggle:hover{border-color:var(--dq-line);color:var(--dq-teal);background:#17231e}html[data-theme=dark] .course-learning-toolbar button,html[data-theme=dark] .course-reader__chapter-heading button,html[data-theme=dark] .course-reader__pager button{border-color:var(--dq-line);color:var(--dq-muted);background:#111a17}html[data-theme=dark] .course-learning-toolbar .course-learning-toolbar__back{border-color:transparent;color:var(--dq-teal);background:transparent}html[data-theme=dark] .course-learning-toolbar .course-learning-toolbar__course-action{border-color:transparent;color:var(--dq-muted);background:transparent}html[data-theme=dark] .course-learning-toolbar 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