:root{--color-bg: #ffffff;--color-bg-soft: #f7f7f8;--color-bg-muted: #eeeef0;--color-text: #1a1a1a;--color-text-soft: #4a4a4a;--color-text-muted: #8a8a8a;--color-border: #e2e2e4;--color-primary: #7c3aed;--color-primary-soft: #ede9fe;--color-accent: #6d28d9;--color-code-bg: #1e1e2e;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 12px rgba(0, 0, 0, .06);--radius: 10px;--max-width: 760px;--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, Monaco, monospace}:root[data-theme=dark]{--color-bg: #0f0f12;--color-bg-soft: #18181c;--color-bg-muted: #232328;--color-text: #e8e8ea;--color-text-soft: #b8b8bc;--color-text-muted: #76767a;--color-border: #2a2a30;--color-primary: #a78bfa;--color-primary-soft: #2a1f4a;--color-accent: #c4b5fd;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4)}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .2s ease,color .2s ease}a{color:var(--color-primary);text-decoration:none;transition:color .15s ease}a:hover{color:var(--color-accent)}img{max-width:100%;height:auto}.container{max-width:var(--max-width);margin:0 auto;padding:0 1.25rem}.container-wide{max-width:1100px;margin:0 auto;padding:0 1.25rem}.site-header{position:sticky;top:0;z-index:100;background-color:#ffffffd9;backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--color-border)}:root[data-theme=dark] .site-header{background-color:#0f0f12d9}.site-header-inner{display:flex;align-items:center;justify-content:space-between;height:60px}.site-logo{font-weight:700;font-size:1.05rem;color:var(--color-text);display:flex;align-items:center;gap:.5rem}.site-logo .logo-mark{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;border-radius:7px;font-size:.85rem}.site-nav{display:flex;align-items:center;gap:1.5rem}.site-nav a{color:var(--color-text-soft);font-size:.9rem;font-weight:500}.site-nav a:hover{color:var(--color-primary)}.theme-toggle{background:none;border:1px solid var(--color-border);color:var(--color-text-soft);width:34px;height:34px;border-radius:8px;cursor:pointer;font-size:1rem;display:inline-flex;align-items:center;justify-content:center;transition:all .15s ease}.theme-toggle:hover{border-color:var(--color-primary);color:var(--color-primary)}.hero{padding:5rem 0 4rem;text-align:center}.hero h1{font-size:2.6rem;font-weight:800;line-height:1.2;letter-spacing:-.02em;margin-bottom:1rem;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.hero .lead{font-size:1.15rem;color:var(--color-text-soft);max-width:600px;margin:0 auto 2rem}.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.7rem 1.4rem;border-radius:8px;font-weight:600;font-size:.95rem;transition:all .15s ease;cursor:pointer;border:none}.btn-primary{background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff}.btn-primary:hover{color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-ghost{background:var(--color-bg-soft);color:var(--color-text);border:1px solid var(--color-border)}.btn-ghost:hover{border-color:var(--color-primary);color:var(--color-primary)}.section-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.25rem;margin-top:2rem}.section-card{display:block;padding:1.5rem;background:var(--color-bg-soft);border:1px solid var(--color-border);border-radius:var(--radius);transition:all .2s ease;color:var(--color-text)}.section-card:hover{transform:translateY(-2px);border-color:var(--color-primary);box-shadow:var(--shadow-md);color:var(--color-text)}.section-card .part-num{display:inline-block;font-size:.78rem;font-weight:700;color:var(--color-primary);background:var(--color-primary-soft);padding:.2rem .6rem;border-radius:999px;margin-bottom:.75rem}.section-card h3{font-size:1.1rem;font-weight:700;margin-bottom:.4rem}.section-card p{font-size:.9rem;color:var(--color-text-muted);line-height:1.6}.article-header{padding:2.5rem 0 1.5rem;border-bottom:1px solid var(--color-border);margin-bottom:2rem}.article-header .breadcrumb{font-size:.85rem;color:var(--color-text-muted);margin-bottom:.75rem}.article-header .breadcrumb a{color:var(--color-text-muted)}.article-header .breadcrumb a:hover{color:var(--color-primary)}.article-header h1{font-size:2rem;font-weight:800;line-height:1.3;letter-spacing:-.01em;margin-bottom:.6rem}.article-header .description{font-size:1.05rem;color:var(--color-text-soft);margin-bottom:1rem}.article-meta{font-size:.85rem;color:var(--color-text-muted);display:flex;gap:1rem;flex-wrap:wrap}.prose{font-size:1.02rem;line-height:1.8;color:var(--color-text)}.prose h2{font-size:1.5rem;font-weight:700;margin:2.2rem 0 1rem;padding-top:.5rem;letter-spacing:-.01em}.prose h3{font-size:1.2rem;font-weight:700;margin:1.6rem 0 .8rem}.prose h4{font-size:1.02rem;font-weight:700;margin:1.2rem 0 .6rem}.prose p{margin:.9rem 0}.prose ul,.prose ol{margin:.9rem 0;padding-left:1.5rem}.prose li{margin:.4rem 0}.prose blockquote{margin:1.2rem 0;padding:.6rem 1.2rem;border-left:3px solid var(--color-primary);background:var(--color-bg-soft);border-radius:0 6px 6px 0;color:var(--color-text-soft)}.prose blockquote p{margin:.3rem 0}.prose code{font-family:var(--font-mono);font-size:.88em;background:var(--color-bg-muted);padding:.15em .4em;border-radius:4px;color:var(--color-accent)}.prose pre{background:var(--color-code-bg)!important;border-radius:8px;padding:1rem 1.1rem;overflow-x:auto;margin:1.2rem 0;font-size:.88rem;line-height:1.6}.prose pre code{background:transparent;padding:0;color:#e8e8ea;font-size:inherit}.prose table{width:100%;border-collapse:collapse;margin:1.2rem 0;font-size:.92rem}.prose th,.prose td{border:1px solid var(--color-border);padding:.6rem .8rem;text-align:left}.prose th{background:var(--color-bg-soft);font-weight:700}.prose hr{border:none;border-top:1px solid var(--color-border);margin:2rem 0}.prose img{border-radius:8px;margin:1.2rem 0;box-shadow:var(--shadow-sm)}.article-nav{display:flex;justify-content:space-between;gap:1rem;margin:3rem 0 2rem;padding-top:1.5rem;border-top:1px solid var(--color-border)}.article-nav a{flex:1;padding:1rem;background:var(--color-bg-soft);border:1px solid var(--color-border);border-radius:8px;font-size:.9rem;color:var(--color-text);transition:all .15s ease}.article-nav a:hover{border-color:var(--color-primary);color:var(--color-primary)}.article-nav a .nav-label{display:block;font-size:.78rem;color:var(--color-text-muted);margin-bottom:.2rem}.article-nav a.next{text-align:right}.toc{position:sticky;top:80px;font-size:.82rem;max-height:calc(100vh - 100px);overflow-y:auto}.toc h4{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--color-text-muted);margin-bottom:.6rem}.toc ul{list-style:none;padding-left:0}.toc li{margin:.25rem 0}.toc a{color:var(--color-text-muted);display:block;border-left:2px solid transparent;padding:.15rem 0 .15rem .6rem}.toc a:hover{color:var(--color-primary);border-left-color:var(--color-primary)}.site-footer{margin-top:5rem;padding:2rem 0;border-top:1px solid var(--color-border);color:var(--color-text-muted);font-size:.85rem;text-align:center}.site-footer a{color:var(--color-text-muted)}.site-footer a:hover{color:var(--color-primary)}.post-list{list-style:none;padding:0}.post-list li{padding:1.1rem 0;border-bottom:1px solid var(--color-border)}.post-list li:last-child{border-bottom:none}.post-list a{display:block;color:var(--color-text)}.post-list a:hover{color:var(--color-primary)}.post-list .post-title{font-weight:600;font-size:1.05rem;margin-bottom:.2rem}.post-list .post-desc{font-size:.9rem;color:var(--color-text-muted)}.post-list .post-meta{font-size:.8rem;color:var(--color-text-muted);margin-top:.3rem}.text-center{text-align:center}.mt-2{margin-top:2rem}.section-title{font-size:1.8rem;font-weight:800;text-align:center;margin-bottom:.5rem;letter-spacing:-.01em}.section-subtitle{text-align:center;color:var(--color-text-muted);font-size:1rem;margin-bottom:1rem}@media (max-width: 768px){.hero h1{font-size:2rem}.hero .lead{font-size:1rem}.article-header h1{font-size:1.6rem}.site-nav{gap:1rem}.site-nav a:not(.theme-toggle){display:none}.toc{display:none}}.article-layout{display:grid;grid-template-columns:1fr 220px;gap:2.5rem;max-width:1000px;margin:0 auto;padding:0 1.25rem}@media (max-width: 1024px){.article-layout{grid-template-columns:1fr;max-width:var(--max-width)}}