@font-face{font-family:"Source Han Serif CN";src:url(/fonts/SourceHanSerifCN-Regular.woff2) format("woff2");font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:"Source Han Serif CN";src:url(/fonts/SourceHanSerifCN-Medium.woff2) format("woff2");font-weight:500;font-style:normal;font-display:swap}:root,[data-theme=light]{--color-bg: #faf8f5;--color-surface: #f3f0eb;--color-text: #2c2419;--color-text-muted: #8c8273;--color-text-subtle: #b8b0a5;--color-border: #e0d8cc;--color-border-hover: #c8bfb0;--color-accent: #9b8c7a;--color-accent-hover: #6b5d4f;--color-code-bg: #f3f0eb;--color-code-text: #5c4f3e;--shadow-sm: 0 1px 2px rgba(44, 36, 25, .04);--shadow-md: 0 2px 8px rgba(44, 36, 25, .06)}[data-theme=dark]{--color-bg: #1a1815;--color-surface: #24211c;--color-text: #e8e0d5;--color-text-muted: #8c8273;--color-text-subtle: #5c554a;--color-border: #3d362b;--color-border-hover: #544b3e;--color-accent: #b8a994;--color-accent-hover: #d4c9b8;--color-code-bg: #24211c;--color-code-text: #d4c9b8;--shadow-sm: none;--shadow-md: none}:root{--font-serif: "Source Han Serif CN", "Songti SC", "STSong", "SimSun", serif;--font-sans: "Source Han Serif CN", "Songti SC", system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: ui-monospace, "Cascadia Code", "Fira Code", "SF Mono", Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-md: 1.25rem;--text-lg: 1.5rem;--text-xl: 2rem;--text-2xl: 2.75rem;--text-3xl: 3.75rem;--leading-tight: 1.2;--leading-snug: 1.35;--leading-normal: 1.6;--leading-relaxed: 1.75;--space-2xs: .25rem;--space-xs: .5rem;--space-sm: .75rem;--space-md: 1.25rem;--space-lg: 2rem;--space-xl: 3.25rem;--space-2xl: 5rem;--space-3xl: 8rem;--max-width-content: clamp(40rem, 55vw, 85rem);--max-width-site: clamp(48rem, 82vw, 96rem);--sidebar-width: 160px;--sidebar-gap: var(--space-xl);--radius-sm: 2px;--radius-md: 4px;--transition: .2s ease;--transition-slow: .4s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-serif);font-size:var(--text-base);font-weight:400;line-height:var(--leading-relaxed);color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-slow),color var(--transition-slow);min-height:100vh}a{color:inherit;text-decoration:none;transition:color var(--transition)}a:hover{color:var(--color-accent-hover)}::selection{background-color:var(--color-border);color:var(--color-text)}:focus-visible{outline:1px solid var(--color-accent);outline-offset:3px}img{max-width:100%;height:auto;display:block}hr{border:none;border-top:1px solid var(--color-border);margin:var(--space-xl) 0}.container{width:100%;max-width:var(--max-width-site);margin-inline:auto;padding-inline:var(--space-lg)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.theme-toggle[data-astro-cid-x3pjskd3]{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;border-radius:50%;background:transparent;color:var(--color-text-muted);cursor:pointer;transition:color var(--transition),background-color var(--transition)}.theme-toggle[data-astro-cid-x3pjskd3]:hover{color:var(--color-text);background-color:var(--color-surface)}.theme-toggle[data-astro-cid-x3pjskd3] .icon[data-astro-cid-x3pjskd3]{display:flex;align-items:center;justify-content:center;transition:opacity var(--transition-slow),transform var(--transition-slow)}.icon-sun[data-astro-cid-x3pjskd3]{opacity:1;transform:rotate(0) scale(1)}.icon-moon[data-astro-cid-x3pjskd3]{position:absolute;opacity:0;transform:rotate(-90deg) scale(.5)}[data-astro-cid-x3pjskd3][data-theme=dark] .icon-sun[data-astro-cid-x3pjskd3]{opacity:0;transform:rotate(90deg) scale(.5)}[data-astro-cid-x3pjskd3][data-theme=dark] .icon-moon[data-astro-cid-x3pjskd3]{position:relative;opacity:1;transform:rotate(0) scale(1)}.search-trigger[data-astro-cid-z3bpxo4i]{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;border:none;background:transparent;color:var(--color-text-muted);cursor:pointer;transition:color var(--transition),background-color var(--transition)}.search-trigger[data-astro-cid-z3bpxo4i]:hover{color:var(--color-text);background-color:var(--color-surface)}.search-overlay[data-astro-cid-z3bpxo4i]{position:fixed;inset:0;z-index:200;display:flex;align-items:flex-start;justify-content:center;padding-top:16vh}.search-overlay[data-astro-cid-z3bpxo4i][hidden]{display:none}.search-backdrop[data-astro-cid-z3bpxo4i]{position:absolute;inset:0;background:#0000004d}[data-astro-cid-z3bpxo4i][data-theme=dark] .search-backdrop[data-astro-cid-z3bpxo4i]{background:#0000008c}.search-modal[data-astro-cid-z3bpxo4i]{position:relative;width:640px;max-width:calc(100vw - 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