:root{
  color-scheme:light;
  --paper:#fafafa;--panel:#fff;--paper-deep:#f0f0ec;
  --ink:#26251e;--muted:#6f6e67;--faint:#96958e;
  --line:#e2e2dc;--line-soft:#ebebe6;
  --accent:#e6532f;--accent-soft:#fff0ea;--blue:#278eff;--code:#24241f;
  --measure:660px;--rail:220px;
  --font:ui-sans-serif,-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
}
@media (prefers-color-scheme:dark){
  :root{color-scheme:dark;--paper:#161613;--panel:#1d1d1a;--paper-deep:#24241f;--ink:#ecebe4;--muted:#a3a29a;--faint:#77766f;--line:#33332d;--line-soft:#2a2a25;--accent:#ff6a42;--accent-soft:#2e1d16}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;margin:0;font-size:16px;line-height:1.75}
a{color:inherit;text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--accent)}
:is(a,summary,button):focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}
img{max-width:100%}

/* chrome */
.chrome{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line-soft)}
.chrome-in{width:min(100%,960px);margin:0 auto;padding:0 16px;height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:680;letter-spacing:-.02em;font-size:15px}
.brand-mark{width:22px;height:22px;border-radius:6px;background:var(--ink);color:var(--paper);display:grid;place-items:center;font:700 11px/1 var(--mono)}
.chrome nav{display:flex;gap:18px;font-size:13px;color:var(--muted)}
.chrome nav a{text-decoration:none}
.chrome nav a:hover{color:var(--ink)}

/* post layout */
.layout{display:grid;grid-template-columns:minmax(0,var(--measure)) var(--rail);justify-content:space-between;align-items:start;column-gap:48px;width:min(100%,960px);margin:0 auto;padding:36px 16px 88px}
.article{min-width:0}
.crumb{color:var(--faint);display:flex;flex-wrap:wrap;gap:8px;margin:0 0 30px;font-size:12px}
.crumb a{color:var(--muted);text-decoration:none}
.crumb a:hover{color:var(--ink)}
.hero{border-bottom:1px solid var(--line-soft);margin:0 0 40px;padding-bottom:32px}
.hero-id{display:flex;align-items:center;gap:14px;margin:0 0 22px}
.avatar{width:56px;height:56px;border-radius:50%;object-fit:cover;background:var(--paper-deep);border:1px solid var(--line);flex:none}
.hero-id .who{display:flex;flex-direction:column;line-height:1.35}
.hero-id .who b{font-size:15px;font-weight:680}
.hero-id .who span{color:var(--muted);font-size:13px}
.title{letter-spacing:-.04em;text-wrap:balance;max-width:620px;margin:0;font-size:clamp(32px,4.4vw,46px);font-weight:690;line-height:1.12}
.title em{color:var(--accent);font-style:normal}
.dek{max-width:610px;color:var(--muted);margin:18px 0 0;font-size:17px;line-height:1.65}
.meta{color:var(--faint);display:flex;flex-wrap:wrap;gap:6px 16px;margin:22px 0 0;font-size:12px}
.meta>*{position:relative}
.meta>*+*:before{content:"";background:var(--faint);border-radius:50%;width:2px;height:2px;position:absolute;top:.75em;left:-9px}
.meta strong{color:var(--muted);font-weight:600}
.meta a{text-decoration:none}
.pills{display:flex;flex-wrap:wrap;gap:6px;margin:14px 0 0;padding:0;list-style:none}
.pills li{border:1px solid var(--line);color:var(--muted);font:600 11px/1.2 var(--mono);border-radius:999px;margin:0;padding:4px 9px}

.body>section{scroll-margin-top:76px}
.body p{margin:0 0 20px}
.body .lead{font-size:18px;line-height:1.7}
.body h2{letter-spacing:-.025em;margin:56px 0 16px;padding-top:8px;scroll-margin-top:76px;font-size:25px;font-weight:680;line-height:1.3}
.body h2{position:relative}.body h2:before{content:"#";color:transparent;position:absolute;left:-18px;font-weight:500;transition:color .15s}
.body h2:hover:before{color:var(--faint)}
.body h3{letter-spacing:-.015em;margin:36px 0 12px;font-size:18px;font-weight:680;line-height:1.4}
.body ul,.body ol{margin:0 0 24px;padding-left:1.4em}
.body li{margin:7px 0}
.body strong{font-weight:660}
.body code{background:var(--paper-deep);font:.86em/1.5 var(--mono);border-radius:3px;padding:.12em .32em}

.summary{border:1px solid var(--line);background:var(--panel);border-radius:8px;margin:0 0 32px;padding:18px 20px}
.summary p{color:var(--muted);margin:0;font-size:15px;line-height:1.7}
.summary p+p{margin-top:8px}
.summary strong{color:var(--ink)}

.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));border:1px solid var(--line);border-radius:8px;background:var(--panel);margin:0 0 32px;overflow:hidden}
.stats>div{padding:14px 16px;border-right:1px solid var(--line-soft)}
.stats>div:last-child{border-right:0}
.stats b{display:block;font-size:20px;font-weight:690;letter-spacing:-.03em;line-height:1.2}
.stats span{color:var(--faint);font-size:12px}

blockquote{border-left:3px solid var(--accent);margin:28px 0;padding:4px 0 4px 20px}
blockquote p{letter-spacing:-.01em;margin-bottom:8px!important;font-size:19px;line-height:1.55}
blockquote cite{color:var(--muted);font-size:13px;font-style:normal;display:block}

.callout{border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 8px 8px 0;margin:26px 0;padding:16px 20px}
.callout b.t{display:block;margin:0 0 6px;font-weight:680}
.callout p:last-child{margin-bottom:0}
.note{background:var(--paper-deep);color:var(--muted);border-radius:8px;margin:24px 0;padding:14px 18px;font-size:14px;line-height:1.7}

.steps{counter-reset:steps;margin:0 0 28px;list-style:none;padding:0!important}
.steps>li{min-height:30px;margin:0;padding:0 0 22px 44px;position:relative}
.steps>li:after{content:"";background:var(--line);width:1px;position:absolute;top:30px;bottom:2px;left:14px}
.steps>li:last-child:after{display:none}
.steps>li:before{counter-increment:steps;content:counter(steps);border:1px solid var(--line);background:var(--panel);width:29px;height:29px;color:var(--muted);font:700 11px/1 var(--mono);border-radius:50%;place-items:center;display:grid;position:absolute;top:0;left:0}
.steps .when{color:var(--accent);font:600 11px/1 var(--mono);display:block;margin:4px 0 6px;letter-spacing:.02em}
.steps h3{margin:0 0 6px;font-size:16px}
.steps p{color:var(--muted);margin:0!important;font-size:15px;line-height:1.7}

.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:24px 0 30px}
.cards>*{border:1px solid var(--line);background:var(--panel);border-radius:8px;margin:0;padding:18px 18px 16px;text-decoration:none;display:block;transition:border-color .15s,transform .15s}
.cards>a:hover{border-color:var(--accent);color:inherit;transform:translateY(-1px)}
.cards .idx{color:var(--accent);font:600 11px/1 var(--mono);margin-bottom:14px;display:block}
.cards h3{margin:0 0 8px;font-size:15px;font-weight:680}
.cards p{color:var(--muted);margin:0!important;font-size:14px;line-height:1.65}
.cards .arrow{color:var(--faint);font-size:12px;margin-top:10px;display:block;font-family:var(--mono)}

.checklist{margin:0 0 28px;list-style:none;padding:0!important}
.checklist>li{margin:0 0 12px;padding-left:30px;position:relative}
.checklist>li:before{content:"";background:var(--accent) center/9px no-repeat url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m2.5 6.5 2.5 2.5 4.5-5' fill='none' stroke='%23fff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");border-radius:50%;width:16px;height:16px;position:absolute;top:.45em;left:0}

.sitebox{border:1px solid var(--line);border-radius:8px;background:var(--panel);overflow:hidden;margin:24px 0 30px}
.sitebox .bar{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid var(--line-soft);background:var(--paper-deep)}
.sitebox .bar i{width:9px;height:9px;border-radius:50%;background:var(--line)}
.sitebox .bar a{margin-left:8px;font:12px/1 var(--mono);color:var(--muted);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sitebox .in{padding:16px 18px}
.sitebox .in p{color:var(--muted);font-size:14.5px;margin:0 0 10px!important}
.sitebox .in p:last-child{margin:0!important}

.sources{border-top:1px solid var(--line);color:var(--muted);margin:48px 0 0;padding-top:18px;font-size:13px;line-height:1.65}
.sources h2{letter-spacing:0;margin:0 0 12px!important;padding:0!important;font-size:14px!important}
.sources h2:before{display:none}
.sources ol{margin:0;padding-left:1.3em}
.sources li{margin:6px 0;word-break:break-word}

.next{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:40px 0 0}
.next a{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:14px 16px;text-decoration:none;display:flex;align-items:center;gap:12px;min-width:0}
.next a:hover{border-color:var(--accent);color:inherit}
.next a.r{justify-content:flex-end;text-align:right}
.next img{width:34px;height:34px;border-radius:50%;object-fit:cover;flex:none}
.next small{display:block;color:var(--faint);font-size:11px}
.next b{display:block;font-size:14px;font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.cta{background:#202020;color:#fff;border-radius:8px;margin:56px 0 0;padding:40px;position:relative;overflow:hidden}
.cta:before{content:"";position:absolute;inset:-40%;background:radial-gradient(closest-side at 70% 30%,#e6532f88,transparent 70%),radial-gradient(closest-side at 20% 90%,#278eff55,transparent 70%);filter:blur(10px)}
.cta>*{position:relative}
.cta h2{color:#fff;letter-spacing:-.033em;margin:0!important;padding:0!important;font-size:clamp(28px,4vw,40px)!important;font-weight:500!important;line-height:1.1!important}
.cta h2:before{display:none}
.cta p{color:#ffffffb3;margin:12px 0 0!important;font-size:15px}
.cta .acts{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.cta .acts a{color:#000;background:#dfdfdf;border-radius:999px;display:inline-flex;align-items:center;min-height:32px;padding:4px 16px;font-size:15px;text-decoration:none}
.cta .acts a:hover{opacity:.82;color:#000}

/* 深度内容块 */
.profile{border:1px solid var(--line);background:var(--panel);border-radius:10px;margin:24px 0 32px;padding:6px 20px}
.profile-t{font:700 11px/1 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin:14px 0 4px!important}
.profile dl{margin:0}
.profile dl>div{display:grid;grid-template-columns:96px minmax(0,1fr);gap:16px;padding:11px 0;border-top:1px solid var(--line-soft)}
.profile dl>div:first-child{border-top:0}
.profile dt{color:var(--faint);font-size:13px;line-height:1.7}
.profile dd{margin:0;font-size:14.5px;line-height:1.7}
.tbl{margin:22px 0 30px;overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:var(--panel)}
.tbl table{border-collapse:collapse;width:100%;font-size:14px;line-height:1.6}
.tbl caption{caption-side:top;text-align:left;color:var(--faint);font-size:12px;padding:10px 14px 0}
.tbl th{text-align:left;font:600 12px/1.4 var(--font);color:var(--muted);background:var(--paper-deep);padding:9px 14px;white-space:nowrap}
.tbl td{padding:10px 14px;border-top:1px solid var(--line-soft);vertical-align:top;min-width:96px}
.tbl td:first-child{font-weight:600;white-space:nowrap}
.work{border:1px solid var(--line);border-radius:12px;background:var(--panel);margin:20px 0;padding:18px 22px 6px}
.work header{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 14px;margin:0 0 10px}
.work h3{margin:0!important;font-size:18px}
.work h3 a{color:var(--ink);text-decoration:none}
.work h3 a:hover{color:var(--accent)}
.work .chips{display:flex;flex-wrap:wrap;gap:6px}
.work .chips i{font:600 11px/1.2 var(--mono);font-style:normal;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 8px}
.work p{font-size:15px}
.work ul{font-size:15px}
.work-facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1px;background:var(--line-soft);border-radius:8px;overflow:hidden;margin:4px 0 16px}
.work-facts>div{background:var(--paper);padding:9px 12px}
.work-facts dt{color:var(--faint);font-size:11px;line-height:1.4}
.work-facts dd{margin:2px 0 0;font-size:13.5px;line-height:1.5;font-weight:600}
.posts{list-style:none;padding:0!important;margin:16px 0 28px}
.posts li{display:grid;grid-template-columns:86px minmax(0,1fr);gap:14px;padding:10px 0;border-top:1px solid var(--line-soft);margin:0!important}
.posts li:first-child{border-top:0}
.posts .d{color:var(--faint);font:12px/1.9 var(--mono)}
.posts a{font-weight:600}
.posts p{margin:2px 0 0!important;color:var(--muted);font-size:14px}
.try{counter-reset:t;list-style:none;padding:0!important;margin:18px 0 28px}
.try li{position:relative;padding:14px 0 14px 46px;border-top:1px solid var(--line-soft);margin:0!important}
.try li:before{counter-increment:t;content:counter(t);position:absolute;left:0;top:14px;width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font:700 13px/1 var(--mono)}
.try a{font-weight:650;font-size:16px}
.try p{margin:4px 0 0!important;color:var(--muted);font-size:14.5px}
/* 页脚：头像掉落堆叠（参考 air.build） */
.drop{position:relative;isolation:isolate;display:flex;flex-direction:column;min-height:760px;margin-top:24px;padding:72px max(16px,calc(50% - 480px)) 26px;background:var(--paper);border-top:1px solid var(--line-soft);overflow:hidden;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}
.drop-scene{position:absolute;inset:0;z-index:-1;overflow:hidden;--m:linear-gradient(to bottom,#000 0,#000 calc(100% - 200px),rgba(0,0,0,.6) calc(100% - 120px),rgba(0,0,0,.14) calc(100% - 40px),rgba(0,0,0,.06) 100%);-webkit-mask-image:var(--m);mask-image:var(--m)}
.drop-scene canvas{display:block;width:100%;height:100%}
.drop.is-hot{cursor:pointer}.drop.is-gather{cursor:grabbing}
.drop-grid{display:grid;grid-template-columns:minmax(0,1.7fr) repeat(3,minmax(0,1fr));gap:32px 28px;align-items:start;color:#fff;mix-blend-mode:difference;pointer-events:none}
.drop-grid a{color:#fff;pointer-events:auto;text-decoration:none}
.drop-grid a:hover{opacity:.62}
.drop-grid h2{color:#8a8a8a;font:700 11px/14px var(--mono);letter-spacing:.08em;text-transform:uppercase;margin:0 0 14px}
.drop-grid ul{display:grid;gap:9px;margin:0;padding:0;list-style:none;font-size:14px;line-height:20px}
.drop-say h3{font-size:28px;line-height:1.18;letter-spacing:-.02em;font-weight:650;margin:0 0 14px}
.drop-say p{color:#9a9a9a;font-size:13px;line-height:1.65;max-width:300px;margin:0}
.drop-bar{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 16px;margin-top:auto;color:#fff;mix-blend-mode:difference;font-size:12px;pointer-events:none}
.drop-bar a{color:#fff;pointer-events:auto;text-decoration:none}
.drop-cue{position:absolute;z-index:2;pointer-events:none;transform:translate(-50%,-50%);white-space:nowrap;border-radius:999px;padding:4px 10px;font-size:12px;line-height:18px;color:var(--ink);background:color-mix(in srgb,var(--panel) 90%,transparent);border:1px solid var(--line);box-shadow:0 6px 18px rgba(0,0,0,.08)}
.drop-cue.is-held{transform:translate(-50%,26px)}
.drop-cue.is-held:before{content:"";position:absolute;left:50%;top:-26px;width:32px;height:32px;border-radius:50%;transform:translate(-50%,-50%);background:color-mix(in srgb,var(--accent) 14%,transparent);border:1px solid color-mix(in srgb,var(--accent) 45%,transparent);animation:drop-pulse 1.2s ease-out infinite}
@keyframes drop-pulse{from{transform:translate(-50%,-50%) scale(.7);opacity:1}to{transform:translate(-50%,-50%) scale(1.5);opacity:0}}
@media (prefers-reduced-motion:reduce){.drop-cue.is-held:before{animation:none}}

.toc{align-self:start;padding-top:4px;font-size:12px;position:sticky;top:76px}
.toc>p{color:var(--faint);margin:0 0 10px;font-weight:680}
.toc ol{border-bottom:1px solid var(--line-soft);margin:0;padding:0 0 16px;list-style:none}
.toc a{color:var(--muted);padding:4px 0;line-height:1.45;text-decoration:none;display:block}
.toc a:hover,.toc a[aria-current=true]{color:var(--ink)}
.toc a[aria-current=true]{font-weight:600}
.toc-acts{padding-top:14px}
.toc-acts a{color:var(--faint);padding:3px 0;text-decoration:none;display:block}
.toc-acts a:hover{color:var(--ink)}

/* index */
.home{width:min(100%,960px);margin:0 auto;padding:56px 16px 88px}
.home-hero{border-bottom:1px solid var(--line-soft);padding-bottom:36px;margin-bottom:28px}
.home-hero .kick{color:var(--accent);font:600 12px/1 var(--mono);letter-spacing:.04em;margin:0 0 18px}
.home-hero h1{letter-spacing:-.045em;text-wrap:balance;margin:0;font-size:clamp(36px,6vw,64px);font-weight:690;line-height:1.04;max-width:760px}
.home-hero h1 em{color:var(--accent);font-style:normal}
.home-hero p{color:var(--muted);font-size:17px;line-height:1.65;max-width:620px;margin:20px 0 0}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 8px;align-items:center}
.filters button{font:inherit;font-size:13px;border:1px solid var(--line);background:var(--panel);color:var(--muted);border-radius:999px;padding:5px 13px;cursor:pointer}
.filters button[aria-pressed=true]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.filters input{font:inherit;font-size:13px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:999px;padding:5px 13px;margin-left:auto;min-width:200px}
.group h2{font-size:13px;color:var(--faint);font-weight:680;margin:40px 0 14px;display:flex;align-items:center;gap:10px}
.group h2 span{font-family:var(--mono);font-weight:500}
.group h2:after{content:"";flex:1;height:1px;background:var(--line-soft)}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.card{border:1px solid var(--line);background:var(--panel);border-radius:10px;padding:18px;text-decoration:none;display:flex;flex-direction:column;gap:12px;transition:border-color .15s,transform .15s,box-shadow .15s;min-width:0}
.card:hover{border-color:var(--accent);color:inherit;transform:translateY(-2px);box-shadow:0 6px 24px -12px #0003}
.card-top{display:flex;align-items:center;gap:12px;min-width:0}
.card-top img{width:42px;height:42px;border-radius:50%;object-fit:cover;border:1px solid var(--line);flex:none}
.card-top div{min-width:0}
.card-top b{display:block;font-size:15px;font-weight:680;letter-spacing:-.01em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card-top span{display:block;color:var(--faint);font:12px/1.4 var(--mono);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.card .tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:auto}
.card .tags i{font:600 10.5px/1.2 var(--mono);font-style:normal;color:var(--faint);border:1px solid var(--line-soft);border-radius:999px;padding:3px 7px}
.card .score{margin-left:auto;color:var(--accent);font:600 11px/1 var(--mono);flex:none;align-self:flex-start}

@media (max-width:1080px){.layout{grid-template-columns:minmax(0,var(--measure));justify-content:center}.toc{display:none}}
@media (max-width:820px){.drop-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.drop-say{grid-column:1/-1}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.profile dl>div{grid-template-columns:1fr;gap:2px}.posts li{grid-template-columns:1fr;gap:0}.work{padding:16px 16px 4px}.drop{min-height:920px;padding:48px 16px 22px}.drop-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.drop-say h3{font-size:24px}
  .layout{padding:28px 16px 64px}
  .cards,.next{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr}
  .cta{padding:28px 24px}
  .filters input{margin-left:0;width:100%}
  .chrome nav .hide-sm{display:none}
}