@import"https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Noto+Serif+SC:wght@400;500;600;700&display=swap";:root{--color-cream: #FAF8F5;--color-cream-dark: #F0EDE8;--color-paper: #FFFEFA;--color-burgundy: #8B3A3A;--color-burgundy-light: #A94A4A;--color-burgundy-dark: #6B2A2A;--color-sage: #7A8B6E;--color-sage-light: #9AAD8E;--color-sage-dark: #5A6B4E;--color-charcoal: #2C2C2C;--color-graphite: #4A4A4A;--color-stone: #7A7A7A;--color-pebble: #ABABAB;--color-mist: #D8D8D8;--color-new: #4A7C59;--color-updated: #C9A227;--color-highlight: #FFF3CD;--font-display: Georgia, "Songti SC", "SimSun", "Times New Roman", serif;--font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: "Menlo", "Consolas", monospace;--font-chinese: "PingFang SC", "Microsoft YaHei", "SimHei", sans-serif;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 3.75rem;--leading-none: 1;--leading-tight: 1.25;--leading-snug: 1.375;--leading-normal: 1.5;--leading-relaxed: 1.625;--leading-loose: 2;--font-light: 300;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--max-width-prose: 65ch;--max-width-content: 1200px;--max-width-wide: 1400px;--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--border-thin: 1px;--border-medium: 2px;--border-thick: 3px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .1);--shadow-inset: inset 0 2px 4px rgba(0, 0, 0, .04);--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease;--transition-bounce: .5s cubic-bezier(.34, 1.56, .64, 1);--duration-fast: .15s;--duration-base: .25s;--duration-slow: .4s;--z-base: 0;--z-dropdown: 100;--z-sticky: 200;--z-overlay: 300;--z-modal: 400;--z-tooltip: 500}@media(prefers-color-scheme:dark){:root.auto-dark{--color-cream: #1A1A1A;--color-cream-dark: #252525;--color-paper: #1F1F1F;--color-charcoal: #F5F5F5;--color-graphite: #DEDEDE;--color-stone: #ABABAB}}*,*:before,*:after{box-sizing:border-box}*{margin:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth}body{line-height:var(--leading-normal);font-family:var(--font-body);font-size:var(--text-base);color:var(--color-charcoal);background-color:var(--color-cream);min-height:100vh}:lang(zh){font-family:var(--font-chinese),var(--font-body)}img,picture,video,canvas,svg{display:block;max-width:100%}input,button,textarea,select{font:inherit}p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:var(--font-semibold);line-height:var(--leading-tight);color:var(--color-charcoal)}:lang(zh) h1,:lang(zh) h2,:lang(zh) h3,:lang(zh) h4,:lang(zh) h5,:lang(zh) h6{font-family:var(--font-chinese)}h1{font-size:var(--text-5xl)}h2{font-size:var(--text-4xl)}h3{font-size:var(--text-3xl)}h4{font-size:var(--text-2xl)}h5{font-size:var(--text-xl)}h6{font-size:var(--text-lg)}p{margin-bottom:var(--space-4)}a{color:var(--color-burgundy);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-burgundy-light)}strong,b{font-weight:var(--font-semibold)}em,i{font-style:italic}.container{width:100%;max-width:var(--max-width-content);margin:0 auto;padding:0 var(--space-6)}.container--wide{max-width:var(--max-width-wide)}.container--prose{max-width:var(--max-width-prose)}.change-indicator--updated{position:relative;border-bottom:2px dashed var(--color-updated);padding-bottom:var(--space-1)}.change-indicator--new:before{content:"";position:absolute;left:calc(-1 * var(--space-4));top:0;bottom:0;width:3px;background:var(--color-new);border-radius:var(--radius-full)}.change-indicator--new{position:relative;padding-left:var(--space-2)}.change-badge{display:inline-flex;align-items:center;gap:var(--space-1);font-size:var(--text-xs);font-weight:var(--font-medium);text-transform:uppercase;letter-spacing:.05em;padding:var(--space-1) var(--space-2);border-radius:var(--radius-full)}.change-badge--new{background:var(--color-new);color:#fff}.change-badge--updated{background:var(--color-updated);color:var(--color-charcoal)}.margin-indicator{position:relative}.margin-indicator:after{content:"";position:absolute;left:calc(-1 * var(--space-6));top:0;bottom:0;width:3px;background:var(--color-updated);border-radius:var(--radius-full);opacity:0;transition:opacity var(--transition-base)}.margin-indicator--visible:after{opacity:1}.card{background:var(--color-paper);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:var(--space-6);transition:box-shadow var(--transition-base),transform var(--transition-base)}.card:hover{box-shadow:var(--shadow-lg)}.card--interactive:hover{transform:translateY(-2px)}.paper{background:var(--color-paper);position:relative}.paper:before{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");opacity:.02;pointer-events:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-family:var(--font-body);font-size:var(--text-sm);font-weight:var(--font-medium);line-height:1;text-decoration:none;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast)}.btn--primary{background:var(--color-burgundy);color:#fff}.btn--primary:hover{background:var(--color-burgundy-light);color:#fff}.btn--secondary{background:var(--color-cream-dark);color:var(--color-charcoal)}.btn--secondary:hover{background:var(--color-mist)}.btn--ghost{background:transparent;color:var(--color-graphite)}.btn--ghost:hover{background:var(--color-cream-dark)}.btn--sm{padding:var(--space-2) var(--space-4);font-size:var(--text-xs)}.btn--lg{padding:var(--space-4) var(--space-8);font-size:var(--text-base)}.stat-bar{height:8px;background:var(--color-cream-dark);border-radius:var(--radius-full);overflow:hidden}.stat-bar__fill{height:100%;background:var(--color-sage);border-radius:var(--radius-full);transition:width var(--transition-slow)}.stat-bar__fill--high{background:var(--color-burgundy)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fade-in{animation:fadeIn var(--transition-base) ease forwards}.animate-slide-up{animation:slideUp var(--duration-slow) ease forwards}.animate-pulse{animation:pulse 2s ease-in-out infinite}.stagger-1{animation-delay:50ms}.stagger-2{animation-delay:.1s}.stagger-3{animation-delay:.15s}.stagger-4{animation-delay:.2s}.stagger-5{animation-delay:.25s}.prose{max-width:var(--max-width-prose)}.prose p{margin-bottom:var(--space-4)}.prose p:last-child{margin-bottom:0}.prose strong{font-weight:var(--font-semibold)}.prose ul,.prose ol{margin-bottom:var(--space-4);padding-left:var(--space-6)}.prose li{margin-bottom:var(--space-2)}.prose blockquote{border-left:3px solid var(--color-burgundy);padding-left:var(--space-4);font-style:italic;color:var(--color-graphite);margin:var(--space-4) 0}@media(max-width:768px){h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}.container{padding:0 var(--space-4)}.hide-mobile{display:none!important}}@media(min-width:769px){.hide-desktop{display:none!important}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}html{scroll-behavior:smooth}body{opacity:1;transition:opacity .2s ease}body.loading{opacity:0}.language-toggle[data-astro-cid-lb7h3eps]{display:inline-flex;align-items:center;gap:var(--space-2);padding:var(--space-2) var(--space-3);background:var(--color-paper);border:1px solid var(--color-mist);border-radius:var(--radius-full);color:var(--color-graphite);font-size:var(--text-sm);font-weight:var(--font-medium);cursor:pointer;transition:all var(--transition-fast)}.language-toggle[data-astro-cid-lb7h3eps]:hover{background:var(--color-cream-dark);border-color:var(--color-pebble);color:var(--color-charcoal)}.language-toggle__label[data-astro-cid-lb7h3eps]{line-height:1}.language-toggle__icon[data-astro-cid-lb7h3eps]{display:flex;opacity:.6}.language-toggle[data-astro-cid-lb7h3eps]:hover .language-toggle__icon[data-astro-cid-lb7h3eps]{opacity:1}.nav-header[data-astro-cid-pux6a34n]{position:sticky;top:0;z-index:1000;background:var(--color-cream);border-bottom:1px solid var(--color-mist)}.nav[data-astro-cid-pux6a34n]{display:flex;align-items:center;justify-content:space-between;height:56px;gap:var(--space-3);padding:0 var(--space-4);max-width:1200px;margin:0 auto}.nav__logo[data-astro-cid-pux6a34n]{font-family:var(--font-display);font-size:var(--text-lg);font-weight:600;color:var(--color-charcoal);text-decoration:none;white-space:nowrap}.nav__logo[data-astro-cid-pux6a34n]:hover{color:var(--color-burgundy)}.nav__tabs[data-astro-cid-pux6a34n]{display:flex;align-items:center;gap:var(--space-1);background:var(--color-cream-dark);padding:4px;border-radius:var(--radius-full)}.nav__tab[data-astro-cid-pux6a34n]{padding:var(--space-2) var(--space-4);font-size:var(--text-sm);font-weight:500;color:var(--color-graphite);text-decoration:none;border-radius:var(--radius-full);transition:all .2s ease;white-space:nowrap}.nav__tab[data-astro-cid-pux6a34n]:hover{color:var(--color-charcoal);background:#ffffff80}.nav__tab--active[data-astro-cid-pux6a34n]{background:#fff;color:var(--color-burgundy);box-shadow:0 1px 3px #0000001a}@media(max-width:480px){.nav[data-astro-cid-pux6a34n]{height:48px;gap:var(--space-2);padding:0 var(--space-3)}.nav__logo[data-astro-cid-pux6a34n]{font-size:var(--text-base)}.nav__tabs[data-astro-cid-pux6a34n]{padding:3px}.nav__tab[data-astro-cid-pux6a34n]{padding:var(--space-1) var(--space-3);font-size:var(--text-xs)}}