@import "https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@200;300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;600&display=swap";
:root{--bg-page:#f8f6f2;--bg-surface:#fff;--text-primary:#1c1917;--accent:#8b6914;--border:#e2ddd7;--text-secondary:#57534e;--text-muted:#a8a29e;--bg-hover:#f3f0ea;--accent-light:#f5edd6;--accent-hover:#7a5c12;--shadow-sm:0 1px 3px #1c19170f;--shadow-md:0 4px 16px #1c191714;--shadow-lg:0 8px 32px #1c19171a;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--transition:.15s ease;--danger:#b91c1c;--danger-bg:#fef2f2;--danger-border:#fecaca;--success:#15803d;--success-bg:#f0fdf4;--success-border:#bbf7d0;--warning:#b45309;--warning-bg:#fffbeb;--warning-border:#fde68a;--overlay:#1c191773;--border-strong:#c9c2b8;--domain-core:#c9845a;--domain-foundational:#3f5c4c;--domain-applied:#8a7256;--domain-edge:#b58a3f;--domain-line:#c9bea8;--domain-core-text:#2c1f14;--principle-cluster-1:#b25b3e;--principle-cluster-2:#6f7d47;--principle-cluster-3:#c2a033;--principle-cluster-4:#9c7a76}html[data-theme=dark]{--bg-page:#211d19;--bg-surface:#2a2521;--text-primary:#ece6dc;--text-secondary:#b7aea1;--text-muted:#7d7468;--accent:#d3ad66;--accent-light:#3a3025;--accent-hover:#e0be7e;--border:#3d362f;--border-strong:#524a40;--bg-hover:#322c26;--shadow-sm:0 1px 3px #00000052;--shadow-md:0 4px 16px #00000061;--shadow-lg:0 8px 32px #00000075;--danger:#f0a0a0;--danger-bg:#3a2323;--danger-border:#5c3232;--success:#8fc99a;--success-bg:#223328;--success-border:#33472f;--warning:#e0be7e;--warning-bg:#3a3025;--warning-border:#4e3f2e;--overlay:#0009;--domain-core:#c9a15a;--domain-foundational:#7a9e8e;--domain-applied:#c99a6b;--domain-edge:#c76b4f;--domain-line:#4d4334;--domain-core-text:#211d19;--principle-cluster-1:#d68868;--principle-cluster-2:#9db177;--principle-cluster-3:#d6b968;--principle-cluster-4:#bfa09c}html[data-skip-splash="1"] #zidu-splash-overlay{display:none!important}.domain-graph-node-circle{transform-box:fill-box;transform-origin:50%;transition:transform .15s,stroke-width .15s}.domain-graph-node-circle:hover{transform:scale(1.08)}.domain-graph-node-circle--inner:hover{stroke-width:2.2px}.domain-graph-node-circle--outer:hover{stroke-width:1.8px}.principle-graph-node-circle{transform-box:fill-box;transform-origin:50%;transition:transform .15s,stroke-width .15s}.principle-graph-node-circle:hover{stroke-width:2.2px;transform:scale(1.08)}:root{--font-size-h1:26px;--font-weight-h1:700;--font-family-h1:"Noto Serif SC", "Songti SC", serif;--font-family-book-title:"Noto Serif SC", "Songti SC", serif;--font-size-h2:16px;--font-weight-h2:600;--font-family-h2:"Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;--font-size-body:14px;--font-weight-body:400;--font-family-body:"Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;--font-size-meta:12px;--font-weight-meta:400;--font-family-meta:"Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;--space-xs:8px;--space-sm:14px;--space-md:20px;--space-lg:32px;--space-xl:40px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;font-size:16px}body{background-color:var(--bg-page);color:var(--text-primary);letter-spacing:.01em;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Noto Sans SC,PingFang SC,Hiragino Sans GB,sans-serif;line-height:1.7}a{color:inherit;transition:color var(--transition);text-decoration:none}a:hover{color:var(--accent)}::selection{background-color:var(--accent-light);color:var(--text-primary)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:var(--radius-sm)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}img,video{max-width:100%;display:block}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,textarea,select{font-family:inherit;font-size:inherit}[disabled],button:disabled,input:disabled{opacity:.45;cursor:not-allowed}.prose{letter-spacing:.02em;font-family:Noto Serif SC,Songti SC,serif;line-height:1.9}.brand-font{letter-spacing:.05em;font-family:Noto Serif 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var(--border);border-radius:var(--radius-lg);width:100%;max-width:560px;box-shadow:var(--shadow-lg);padding:var(--space-md)}.media-card{background-color:var(--bg-surface);border:1px solid var(--border);border-radius:var(--radius-md);flex-direction:column;display:flex}.media-card__media{aspect-ratio:3/4;border-radius:var(--radius-md) var(--radius-md) 0 0;width:100%;overflow:hidden}.media-card__info{padding:10px var(--space-sm);border-top:1px solid var(--border);border-radius:0 0 var(--radius-md) var(--radius-md)}@media (max-width:640px){.book-grid{grid-template-columns:repeat(4,1fr)!important;gap:8px!important}.book-grid .media-card__info{padding:6px!important}.book-grid .book-card-title{min-height:1.925rem!important;font-size:.6875rem!important}.book-grid .book-card-author{font-size:.625rem!important}.book-grid .card-badge{padding:1px 4px!important;font-size:.5rem!important}.book-grid .card-menu-btn{min-width:32px!important;min-height:32px!important}.book-grid .select-check-btn{width:32px!important;height:32px!important}}.theory-path-track{width:100%;position:relative}.theory-path-track:before{content:"";background:var(--border);z-index:0;width:1px;position:absolute;top:4px;bottom:4px;left:17px}.theory-path-node{z-index:1;cursor:pointer;align-items:flex-start;gap:14px;width:100%;padding:12px 0;font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,sans-serif;text-decoration:none;display:flex;position:relative}.theory-path-node-circle{background:var(--bg-surface);border:1px solid var(--text-muted);width:36px;height:36px;box-shadow:var(--shadow-sm);border-radius:50%;flex-shrink:0;position:relative}.theory-path-node.completed .theory-path-node-circle{background:var(--accent);border-color:var(--accent)}.theory-path-node.current .theory-path-node-circle{background:var(--accent-light);border:2px solid var(--accent);box-shadow:0 0 0 4px #8b691424}.theory-path-node.upcoming .theory-path-node-circle{background:var(--bg-surface);border:1px solid 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