:root{--ink:#171717;--muted:#606060;--accent:#171717;--surface-muted:#f5f5f5;--line:#ededed;--paper:#fff;--body:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Helvetica,Arial,sans-serif}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);font:16px/1.5 var(--body);-webkit-font-smoothing:antialiased;margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit;background:0 0;border:0}button:disabled{opacity:.35;cursor:default}a{color:inherit;text-decoration:none}a:hover{text-underline-offset:3px;text-decoration:underline}button:focus-visible,a:focus-visible{outline-offset:4px;outline:2px solid #555}input:focus,textarea:focus,select:focus{outline:none}input[type=checkbox]:focus-visible,input[type=radio]:focus-visible{outline-offset:2px;outline:2px solid #555}svg{display:block}h1,h2,h3,p{margin:0}.sr-only{clip:rect(0,0,0,0);width:1px;height:1px;position:absolute;overflow:hidden}.skip-link{z-index:10;color:#fff;background:#171717;padding:10px;position:fixed;top:-100px;left:20px}.skip-link:focus{top:10px}.site-header{border-bottom:1px solid var(--line);background:#fff;height:85px}.header-inner{align-items:center;gap:28px;max-width:1260px;height:100%;margin:auto;padding:0 24px;display:flex}.brand{flex-shrink:0;align-items:center;gap:9px;display:flex}.brand:hover{text-decoration:none}.brand-symbol{color:#fff;background:#171717;border-radius:50%;width:40px;height:40px}.brand-word{letter-spacing:-1px;align-items:center;font-size:22px;font-weight:750;line-height:1;display:flex}.brand-cn{letter-spacing:0;color:#666;padding-left:7px;font-size:12px;font-weight:500}.search-box{color:#858585;align-items:center;gap:8px;display:flex}.header-search{background:#f5f5f7;border-radius:24px;flex-shrink:0;width:216px;height:40px;padding:0 15px}.search-box svg{stroke:currentColor;fill:none;stroke-width:1.7px;flex-shrink:0;width:18px;height:18px}.search-box input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0;padding:7px 0;font-size:14px}input::placeholder{color:#888}.search-box kbd{color:#888;font-size:11px}.main-nav{align-items:center;gap:28px;margin-left:auto;display:flex}.nav-link{white-space:nowrap;color:#555;padding:8px 0;font-size:15px;font-weight:500}.nav-link.active{color:#171717;font-weight:600}.nav-link:after{content:"";border-bottom:1px solid #888;border-right:1px solid #888;width:5px;height:5px;margin-left:8px;display:inline-block;transform:translateY(-3px)rotate(45deg)}.header-actions{align-items:center;gap:22px;margin-left:auto;display:flex}.language-button{white-space:nowrap;padding:8px 0;font-size:13px}.language-button span{color:#888;margin-left:4px}.button{border-radius:8px;justify-content:center;align-items:center;gap:12px;padding:9px 16px;font-size:14px;font-weight:500;transition:background .15s;display:inline-flex}.primary{color:#fff;background:#171717}.primary:hover{background:#333;text-decoration:none}.header-subscribe{color:#333;white-space:nowrap;background:#fff;border:1px solid #e5e5e5;border-radius:22px;padding:6px 15px;box-shadow:0 0 0 1px #f5f5f5}.header-subscribe:before{content:"+";border:1.5px solid #555;border-radius:50%;place-items:center;width:16px;height:16px;font-size:14px;line-height:1;display:grid}.header-subscribe:hover{background:#f7f7f7}.page-shell{max-width:1260px;margin:auto;padding:0 24px}.layout{grid-template-columns:minmax(0,1fr) 280px;gap:32px;margin-top:32px;display:grid}.feed{min-width:0;scroll-margin-top:20px}.feed-heading{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:17px;display:flex}.feed-heading>div:first-child{flex-direction:column-reverse;gap:6px;display:flex}.feed-heading h1{letter-spacing:-.35px;font-size:24px;font-weight:600;line-height:32px}.date-line{color:#777;font-size:12px;line-height:18px}.date-switch{background:#fff;border:1px solid #e8e8e8;border-radius:8px;align-items:center;gap:4px;height:32px;display:flex}.icon-button{border-radius:6px;place-items:center;width:30px;height:30px;font-size:22px;line-height:1;display:inline-grid}.icon-button:hover{background:#f5f5f5}#today-button{padding:0 5px;font-size:12px}.feed-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:15px;margin-bottom:8px;display:flex}.categories{scrollbar-width:none;gap:23px;display:flex;overflow:auto}.category{white-space:nowrap;color:#666;padding:0 0 11px;font-size:13px;position:relative}.category.active{color:#171717;font-weight:600}.category.active:after{content:"";background:#171717;height:2px;position:absolute;bottom:0;left:0;right:0}.sort-label{flex-shrink:0;padding-bottom:10px}.sort-label select{color:#666;background:#fff;border:0;max-width:120px;font-size:12px}.result-count{color:#888;padding:0 0 7px;font-size:11px;display:block}.story{border-radius:8px;grid-template-columns:48px minmax(0,1fr) 112px;gap:16px;padding:20px 0;display:grid;position:relative}.story:hover{background:#fafafa}.story-logo{border-radius:10px;flex-shrink:0;place-items:center;width:48px;height:48px;font-size:30px;font-weight:600;display:grid;overflow:hidden}.story-logo.anthropic{color:#3d2c21;background:#dca386;font-size:39px}.story-logo.openai{color:#fff;background:#121212;border-radius:50%;font-size:34px}.story-logo.google{color:#477dec;background:linear-gradient(135deg,#e2ecff,#eff0ff 55%,#f9e5ed);font-size:40px}.story-logo.qwen{color:#fff;background:linear-gradient(145deg,#826cf4,#b4a3ff);font-size:38px}.story-logo.huggingface{background:#fff0bd;font-size:32px}.story-logo.github{color:#19251a;background:#c5f467;font-family:monospace;font-size:23px}.story-logo.industry{color:#fff;background:#ad2233;font-family:Georgia,serif;font-size:35px}.story-content{min-width:0}.story-content h3{font-weight:600;line-height:24px}.story-title{text-align:left;color:#202020;padding:0;font-size:16px;font-weight:600;line-height:24px}.story-title:hover{text-underline-offset:3px;text-decoration:underline}.story-number{font:inherit}.pick-label{color:#666;vertical-align:2px;white-space:nowrap;border:1px solid #e7e7e7;border-radius:4px;margin-left:7px;padding:0 5px;font-size:10px;font-weight:400;line-height:17px;display:inline-block}.story-description{color:#4f4f4f;margin:3px 0 6px;font-size:15px;line-height:23px}.story-meta{color:#666;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;line-height:20px;display:flex}.story-tag{align-items:center;gap:5px;display:inline-flex}.story-tag svg{stroke:#777;fill:none;stroke-width:1.5px;width:13px;height:13px}.meta-divider:before{content:"·"}.source-link:hover{color:#171717}.story-time{color:#888;font-size:11px}.story-actions{align-self:start;gap:12px;display:flex}.save-button,.vote-button{color:#404040;background:#fff;border:1px solid #e4e4e4;border-radius:10px;flex-direction:column;justify-content:center;align-items:center;gap:3px;width:50px;height:52px;padding:0;font-size:13px;line-height:18px;transition:background .15s,border-color .15s;display:flex;box-shadow:0 0 0 1px #f5f5f5}.save-button svg{stroke:currentColor;fill:none;stroke-width:1.4px;width:14px;height:14px}.save-button span{font-size:10px}.vote-button .triangle{color:#555;font-size:10px;line-height:14px}.save-button:hover,.vote-button:hover{background:#f5f5f5;border-color:#ccc}.save-button[aria-pressed=true],.vote-button[aria-pressed=true]{color:#111;background:#ededed;border-color:#a0a0a0}.save-button[aria-pressed=true] svg{fill:#c5c5c5}.sidebar h2,.sidebar h3{letter-spacing:-.25px;font-size:18px;font-weight:600;line-height:26px}.newsletter-card{border-bottom:1px solid var(--line);padding:0 0 29px}.newsletter-card>p{color:#666;margin:6px 0 20px;font-size:14px;line-height:23px}.letter-preview{align-items:flex-start;gap:12px;margin-bottom:17px;display:flex}.letter-icon{color:#555;background:#f3f3f3;border:1px solid #eaeaea;border-radius:7px;flex-shrink:0;place-items:center;width:40px;height:46px;display:grid}.letter-icon svg{width:30px}.letter-preview strong{font-size:13px;font-weight:600;display:block}.letter-preview div>span{color:#777;margin-top:3px;font-size:12px;line-height:19px;display:block}.newsletter-card .button{justify-content:space-between;width:100%;font-size:13px}.topics-section{margin-top:26px}.sidebar-heading{justify-content:space-between;align-items:center;margin-bottom:19px;display:flex}.mini-label{color:#888;font-size:10px}.topic{text-align:left;align-items:flex-start;gap:9px;width:100%;padding:11px 0 16px;display:flex}.topic-index{border-radius:6px;flex-shrink:0;place-items:center;width:20px;height:20px;margin-top:2px;font-size:10px;font-weight:600;display:grid}.topic:first-child .topic-index{color:#7955cc;background:#ede8ff}.topic:nth-child(2) .topic-index{color:#4977b8;background:#e5f0ff}.topic:nth-child(3) .topic-index{color:#6c823d;background:#eaf3d7}.topic:nth-child(4) .topic-index{color:#aa7245;background:#f9e8d8}.topic-name{flex:1;font-size:14px;line-height:22px}.topic-arrow{color:#777;margin-top:3px;font-size:12px}.topic:hover .topic-name{text-underline-offset:3px;text-decoration:underline}.principles{border-top:1px solid var(--line);margin-top:12px;padding-top:24px}.eyebrow{color:#888;letter-spacing:1px;font-size:10px}.principles h3{margin:9px 0;font-size:16px}.principles p{color:#666;font-size:13px;line-height:22px}.text-button{color:#4f4f4f;padding:0;font-size:13px;line-height:1.6}.text-button:hover{text-underline-offset:3px;text-decoration:underline}.principles .text-button{margin-top:12px}.editor-note{border-top:1px solid var(--line);margin-top:28px;padding-top:22px}.editor-note h3{font-size:14px}.editor-note p{color:#777;margin-top:8px;font-size:13px;line-height:22px}.from-cnblogs{color:#888;align-items:center;gap:10px;padding:24px 0;display:flex}.mini-tree{font-size:28px}.from-cnblogs strong{font-size:11px;font-weight:500}.from-cnblogs p{margin-top:3px;font-size:10px}.feed-end{border-top:1px solid var(--line);text-align:center;margin-top:14px;padding:24px 0}.feed-end h3{font-size:14px;font-weight:500}.feed-end p{color:#777;margin-top:5px;font-size:13px}.feed-end .text-button{border:1px solid #e5e5e5;border-radius:8px;width:100%;margin-top:19px;padding:9px 20px}.site-footer{border-top:1px solid var(--line);color:#888;justify-content:space-between;gap:15px;margin-top:30px;padding:22px 0 27px;font-size:11px;display:flex}.footer-divider{color:#ccc;padding:0 8px}.footer-sprout{margin-left:7px}.archive-picker{background:#f7f7f7;border-radius:6px;align-items:center;gap:10px;margin-bottom:16px;padding:12px;font-size:12px;display:flex}.archive-picker[hidden]{display:none}.archive-picker select{border:1px solid var(--line);background:#fff;border-radius:4px;padding:5px;font-size:12px}.archive-picker span{color:#777}.empty-state{text-align:center;color:#666;padding:70px 15px;font-size:14px}.empty-state .button{margin-top:16px}dialog{width:min(580px,100% - 32px);color:var(--ink);background:#fff;border:1px solid #e4e4e4;border-radius:14px;max-height:85vh;padding:36px;overflow:auto;box-shadow:0 25px 100px #00000030}dialog::backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#00000060}.modal-close{color:#777;position:absolute;top:13px;right:13px}.modal-eyebrow{color:#666;letter-spacing:1px;margin-bottom:14px;font-size:11px}.modal-title{margin:15px 0;font-size:24px;line-height:1.5}.modal-description{color:#555;font-size:15px;line-height:1.8}.insight{background:#f5f5f5;border-radius:8px;margin:23px 0;padding:20px}.insight h3{margin-bottom:8px;font-size:14px}.insight p{color:#555;font-size:14px;line-height:1.8}.modal-footnote{color:#777;margin-top:20px;font-size:12px}.subscribe-form{gap:12px;margin-top:22px;display:grid}.subscribe-form label{font-size:13px}.subscribe-form input{background:#fff;border:1px solid #ddd;border-radius:6px;padding:13px}.subscribe-form .button{padding:12px}.toast{color:#fff;opacity:0;pointer-events:none;z-index:20;text-align:center;background:#171717;border-radius:8px;max-width:90vw;padding:11px 20px;font-size:13px;transition:opacity .2s,transform .2s;position:fixed;bottom:25px;left:50%;transform:translate(-50%,20px)}.toast.visible{opacity:1;transform:translate(-50%)}@media (max-width:1150px){.header-inner{gap:20px}.header-search{width:190px}.main-nav{gap:20px}.brand-cn{display:none}.layout{grid-template-columns:minmax(0,1fr) 250px;gap:28px}.story{grid-template-columns:48px minmax(0,1fr) 100px;gap:14px}.story-actions{gap:8px}.save-button,.vote-button{width:46px}}@media (max-width:900px){.header-subscribe{display:none}.layout{grid-template-columns:minmax(0,1fr)}.sidebar{grid-template-columns:1fr 1fr;gap:28px;margin-top:20px;display:grid}.topics-section{margin:0}.newsletter-card{border-bottom:0}.principles,.editor-note{margin-top:0}.from-cnblogs{grid-column:1/-1;padding:0}.main-nav{gap:17px}.nav-link{font-size:13px}.header-actions{gap:0}.story{grid-template-columns:48px minmax(0,1fr) 112px;gap:16px}.story-actions{gap:12px}.save-button,.vote-button{width:50px}}@media (max-width:650px){.site-header{height:121px}.header-inner{align-items:flex-start;gap:16px;padding:14px 20px 0;position:relative}.brand-symbol{width:34px;height:34px}.brand-word{display:none}.header-search{flex:1;width:auto;height:36px;padding:0 12px}.search-box input{font-size:13px}.header-actions{margin:0}.language-button{font-size:12px}.main-nav{gap:27px;height:49px;margin:0;position:absolute;bottom:0;left:20px;right:20px}.nav-link{height:100%;font-size:14px}.nav-link:after{display:none}.nav-link.active{border-bottom:2px solid #171717}.page-shell{padding:0 20px}.layout{margin-top:24px}.feed-heading{gap:10px}.feed-heading h1{font-size:21px;line-height:28px}.date-line{font-size:10px}.date-switch{gap:0;margin-top:0}.icon-button{width:25px;height:29px}#today-button{font-size:11px}.categories{flex:1;gap:17px}.category{font-size:12px}.feed-toolbar{gap:10px}.sort-label select{max-width:87px;font-size:11px}.result-count{font-size:10px}.story{grid-template-columns:42px minmax(0,1fr) 42px;gap:12px;padding:18px 0}.story-logo{width:42px;height:42px;font-size:29px!important}.story-title{font-size:14px;line-height:21px}.story-content h3{line-height:21px}.pick-label{margin-left:5px;font-size:8px;line-height:15px}.story-description{margin-top:5px;font-size:13px;line-height:21px}.story-meta{gap:6px;font-size:11px}.story-time{display:none}.story-actions{flex-direction:column-reverse;gap:9px}.vote-button{border-radius:8px;width:42px;height:48px;font-size:12px}.save-button{width:42px;height:28px;box-shadow:none;background:0 0;border:0}.save-button span{display:none}.save-button[aria-pressed=true]{border-radius:6px}.sidebar{border-top:1px solid var(--line);padding-top:25px;display:block}.topics-section{margin-top:24px}.principles,.editor-note{margin-top:20px}.from-cnblogs{padding:24px 0 0}.site-footer{flex-direction:column;gap:6px;font-size:10px}.archive-picker{flex-wrap:wrap}.modal-title{font-size:21px}dialog{padding:30px 22px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}html[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--ink:#f2f3f4;--muted:#a7adb3;--accent:#f2f3f4;--surface-muted:#1a1e22;--line:#2d3338;--paper:#0f1215}html[data-theme=dark] body{color:#f2f3f4;background:#0f1215}html[data-theme=dark] .site-header{background:#111416;border-color:#2d3338}html[data-theme=dark] .brand-symbol{color:#111416;background:#f2f3f4}html[data-theme=dark] .brand-cn,html[data-theme=dark] .nav-link,html[data-theme=dark] .date-line,html[data-theme=dark] .story-meta,html[data-theme=dark] .category,html[data-theme=dark] .mini-label{color:#a7adb3}html[data-theme=dark] .nav-link.active,html[data-theme=dark] .category.active{color:#f2f3f4}html[data-theme=dark] .header-search,html[data-theme=dark] .date-switch,html[data-theme=dark] .sort-label select,html[data-theme=dark] .archive-picker,html[data-theme=dark] .archive-picker select{color:#e8eaec;background:#1a1e22}html[data-theme=dark] .header-search input,html[data-theme=dark] .sort-label select{color:#e8eaec}html[data-theme=dark] .button.primary{color:#111416;background:#f2f3f4}html[data-theme=dark] .button.primary:hover{background:#dfe2e5}html[data-theme=dark] .header-subscribe,html[data-theme=dark] .save-button,html[data-theme=dark] .vote-button,html[data-theme=dark] .icon-button{color:#e8eaec;background:#171b1f;border-color:#343b42}html[data-theme=dark] .header-subscribe:hover,html[data-theme=dark] .save-button:hover,html[data-theme=dark] .vote-button:hover,html[data-theme=dark] .icon-button:hover{background:#22282e}html[data-theme=dark] .story:hover{background:#171b1f}html[data-theme=dark] .story-title,html[data-theme=dark] .source-link{color:#e9ebed}html[data-theme=dark] .story-description{color:#c0c6cb}html[data-theme=dark] .pick-label{color:#aeb5bb;border-color:#3a424a}html[data-theme=dark] .letter-icon{color:#c3c8cd;background:#1b2025;border-color:#343b42}html[data-theme=dark] .site-footer{color:#929aa2;border-color:#2d3338}html[data-theme=dark] dialog{color:#f2f3f4;background:#171b1f;border-color:#343b42}html[data-theme=dark] dialog input,html[data-theme=dark] .subscribe-form input{color:#f2f3f4;background:#101316;border-color:#3a424a}html[data-theme=dark] .insight{background:#1a1f24}
.story-logo{box-shadow:inset 0 0 0 1px #0000000d}.story-meta .source-link{color:#4f4f4f;font-weight:600}.feed-end{margin-left:-8px;margin-right:-8px}.layout{margin-top:24px}.feed-toolbar{margin-top:0}html[data-theme=dark] .story-community{border-color:#353c43}html[data-theme=dark] .comment-composer{background:#171c20;border-color:#353c43}html[data-theme=dark] .comment{border-color:#30373e}html[data-theme=dark] .comment-body>p{color:#c0c6cb}html[data-theme=dark] .comment-meta time,html[data-theme=dark] .comment-actions button{color:#929ba3}html[data-theme=dark] .comment-composer textarea{color:#edf0f2;background:0 0}.story-community{border-top:1px solid #171717;margin-top:45px;padding-top:25px}.comment-composer{border:1px solid #e4e4e4;border-radius:7px;margin-top:20px;padding:11px}.comment-composer textarea{resize:vertical;color:#333;border:0;outline:0;width:100%;min-height:72px;font-size:12px;line-height:1.6;display:block}.comment-list{margin-top:20px}.comment{border-bottom:1px solid #ededed;gap:10px;padding:16px 0;display:flex}.comment-avatar{color:#fff;background:#6e777f;border-radius:50%;flex-shrink:0;place-items:center;width:29px;height:29px;font-size:11px;font-weight:700;display:grid}.comment:nth-child(3n+2) .comment-avatar{background:#d28d70}.comment:nth-child(3n+3) .comment-avatar{background:#6d9a83}.comment-body{flex:1;min-width:0}.comment-meta{align-items:baseline;gap:8px;display:flex}.comment-meta strong{font-size:12px}.comment-meta time{color:#999;font-size:10px}.comment-body>p{color:#555;white-space:pre-wrap;overflow-wrap:anywhere;margin-top:6px;font-size:12px;line-height:1.75}.comment-actions{gap:13px;margin-top:8px;display:flex}.comment-actions button{color:#999;padding:0;font-size:10px}.comment-actions button:hover{color:#444;text-decoration:underline}.comment-empty{color:#999;text-align:center;padding:28px 0;font-size:12px}.story-logo{box-shadow:none;position:relative;background:0 0!important}.account-button{background:#fff;border:1px solid #dedede;border-radius:50%;place-items:center;width:40px;height:40px;padding:0;transition:border-color .15s,background .15s,transform .15s;display:grid;position:relative;overflow:hidden}.account-button:hover{background:#f7f7f7;border-color:#bdbdbd;transform:translateY(-1px)}.account-avatar{border-radius:inherit;color:#fff;background:#171717;place-items:center;width:auto;height:auto;font-size:14px;font-weight:700;line-height:1;display:grid;position:absolute;inset:0}.account-avatar svg{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;width:19px;height:19px}.header-actions{gap:16px}.nav-link:after{display:none}.archive-picker{background:#fff;gap:12px;margin-bottom:0;padding:8px 0;font-size:11px}.archive-picker select{font-size:11px}.archive-picker a{color:#777;margin-left:auto}.detail{max-width:780px;margin:38px auto 90px}.detail h1{letter-spacing:-.5px;font-size:34px;line-height:1.35}.admin h1{margin-bottom:12px;font-size:28px}.admin h2{margin:25px 0 15px;font-size:18px}.admin .button{border:1px solid #ddd;font-size:12px}@media (max-width:650px){.header-actions{gap:10px}.account-button{width:34px;height:34px}.detail{margin-top:25px}.detail h1{font-size:25px}.archive-picker{gap:8px}}.admin{max-width:1180px;margin:31px auto 80px}.story{margin-left:-8px;margin-right:-8px;padding-left:8px;padding-right:8px;transition:background .16s,transform .16s}.story:hover{transform:translate(2px)}.feed-heading>div:first-child{flex-direction:column;gap:6px;display:flex}.feed-heading h1{order:1}.feed-heading .date-line{order:2}