:root{--bg: #ffffff;--bg-soft: #f7f8fa;--bg-code: #f2f4f7;--fg: #14161a;--fg-muted: #5b6472;--border: #e3e6ea;--accent: #3b5bfd;--accent-soft: #eef1ff;--radius: 12px;--maxw: 1120px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;--mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace}@media(prefers-color-scheme:dark){:root{--bg: #0e1116;--bg-soft: #161a21;--bg-code: #1a1f27;--fg: #e8eaed;--fg-muted: #9aa4b2;--border: #262c36;--accent: #7b93ff;--accent-soft: #1b2140}}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);line-height:1.65;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:20px}.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:100}.skip-link:focus{left:8px;top:8px}.site-header{border-bottom:1px solid var(--border);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);position:sticky;top:0;z-index:40}.site-header .inner{display:flex;align-items:center;gap:24px;min-height:62px}.brand{display:flex;align-items:center;gap:9px;font-weight:700;color:var(--fg);font-size:1.05rem;letter-spacing:-.01em}.brand:hover{text-decoration:none}.brand .dot{width:22px;height:22px;border-radius:7px;background:linear-gradient(135deg,var(--accent),#8f6bff)}.site-nav{display:flex;gap:18px;margin-inline-start:auto;flex-wrap:wrap}.site-nav a{color:var(--fg-muted);font-size:.925rem;font-weight:500}.site-nav 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.tick{color:var(--accent);font-weight:700}.hero{padding:56px 0 32px;border-bottom:1px solid var(--border);background:radial-gradient(120% 140% at 50% 0%,var(--accent-soft),transparent 62%)}.hero h1{font-size:clamp(1.9rem,4.4vw,3rem);line-height:1.18;margin:0 0 14px;letter-spacing:-.025em;max-width:20ch}.hero p{color:var(--fg-muted);font-size:clamp(1rem,1.6vw,1.15rem);max-width:62ch;margin:0 0 22px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;font-weight:600;font-size:.94rem;border:1px solid var(--border);background:var(--bg);color:var(--fg)}.btn:hover{text-decoration:none;border-color:var(--accent)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{filter:brightness(1.08)}.stats{display:flex;gap:28px;flex-wrap:wrap;padding:0;margin:0;list-style:none}.stats div{font-size:1.6rem;font-weight:700;letter-spacing:-.02em}.stats span{color:var(--fg-muted);font-size:.85rem}.section{padding:44px 0 8px}.section-head{display:flex;align-items:baseline;gap:14px;margin-bottom:18px;flex-wrap:wrap}.section-head h2{font-size:1.35rem;margin:0;letter-spacing:-.015em}.section-head a{font-size:.9rem;margin-inline-start:auto}.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(288px,1fr));padding:0;margin:0;list-style:none}.card{border:1px solid var(--border);border-radius:var(--radius);padding:18px;background:var(--bg);display:flex;flex-direction:column;gap:10px;transition:border-color .15s ease,transform .15s ease}.card:hover{border-color:var(--accent);transform:translateY(-2px)}.card h3{margin:0;font-size:1.02rem;line-height:1.4}.card h3 a{color:var(--fg)}.card p{margin:0;color:var(--fg-muted);font-size:.9rem}.card-meta{display:flex;gap:8px;flex-wrap:wrap;font-size:.78rem;color:var(--fg-muted);margin-top:auto;padding-top:4px}.tag{border:1px solid var(--border);background:var(--bg-soft);border-radius:999px;padding:2px 9px;white-space:nowrap}.badge-featured{background:var(--accent-soft);color:var(--accent);border-color:transparent;font-weight:600}.snippet{position:relative;margin:16px 0;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg-code);overflow:hidden}.snippet-bar{display:flex;align-items:center;gap:10px;padding:8px 12px;border-bottom:1px solid var(--border);font-size:.8rem;color:var(--fg-muted);background:var(--bg-soft)}.snippet-bar .copy-btn{margin-inline-start:auto;border:1px solid var(--border);background:var(--bg);color:var(--fg);border-radius:8px;padding:4px 12px;font:inherit;font-size:.8rem;cursor:pointer}.snippet-bar .copy-btn:hover{border-color:var(--accent);color:var(--accent)}.snippet pre{margin:0;padding:16px;overflow-x:auto;font-family:var(--mono);font-size:.855rem;line-height:1.6;white-space:pre-wrap;word-break:break-word}.article{padding:40px 0 60px;max-width:76ch}.article h1{font-size:clamp(1.6rem,3.4vw,2.3rem);line-height:1.25;letter-spacing:-.02em;margin:0 0 10px}.article .lede{color:var(--fg-muted);font-size:1.05rem;margin:0 0 8px}.article .metaline{color:var(--fg-muted);font-size:.85rem;margin-bottom:22px}.article h2{margin-top:34px;font-size:1.25rem}.article h3{margin-top:26px;font-size:1.06rem}.article img{max-width:100%;height:auto;border-radius:var(--radius)}.article .cover{margin:0 0 22px}.article figure{margin:24px 0}.article figure img,.article figure video,.article .cover img{display:block;width:100%;height:auto;border-radius:var(--radius);border:1px solid var(--border);background:var(--bg-soft)}.article figure video{cursor:pointer}.article figcaption{margin-top:8px;font-size:.85rem;color:var(--fg-muted);line-height:1.5}.article figure video,.article figure .video-fallback{aspect-ratio:16 / 9}.article .media-note{font-size:.8rem;color:var(--fg-muted);margin-top:6px}.article blockquote{margin:16px 0;padding:10px 16px;border-inline-start:3px solid var(--accent);background:var(--bg-soft);color:var(--fg-muted)}.article code{font-family:var(--mono);font-size:.88em;background:var(--bg-code);padding:2px 6px;border-radius:5px}.article pre code{background:none;padding:0}.breadcrumb{font-size:.85rem;color:var(--fg-muted);padding:18px 0 0}.breadcrumb a{color:var(--fg-muted)}.lang-missing{border:1px dashed var(--border);background:var(--bg-soft);color:var(--fg-muted);border-radius:var(--radius);padding:12px 14px;font-size:.9rem;margin:20px 0}.source-box{border:1px solid var(--border);border-inline-start:3px solid var(--accent);background:var(--bg-soft);border-radius:var(--radius);padding:12px 16px;font-size:.88rem;color:var(--fg-muted);margin:0 0 22px}.source-box .src-title{color:var(--fg);font-weight:600;margin-bottom:4px;font-size:.9rem}.source-box dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:2px 12px}.source-box dt{font-weight:600}.source-box dd{margin:0;overflow-wrap:anywhere}.site-footer{margin-top:60px;border-top:1px solid var(--border);padding:28px 0 40px;color:var(--fg-muted);font-size:.86rem}.site-footer .rows{display:flex;gap:18px;flex-wrap:wrap;justify-content:space-between}.site-footer nav{display:flex;gap:14px;flex-wrap:wrap}.search-box{display:flex;gap:10px;margin:18px 0 8px}.search-box input{flex:1;padding:11px 14px;border-radius:999px;border:1px solid var(--border);background:var(--bg);color:var(--fg);font:inherit;min-width:0}.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}#search-results{list-style:none;padding:0;margin:10px 0 0;display:grid;gap:10px}#search-results li{border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}#search-results mark{background:var(--accent-soft);color:var(--fg);border-radius:3px;padding:0 2px}.empty{color:var(--fg-muted);padding:18px 0}@media(max-width:640px){.site-header .inner{flex-wrap:wrap;padding-block:10px}.site-nav{gap:14px;width:100%}}