:root{
  --bg:#f2f0e9;
  --surface:#fffefa;
  --surface-2:#e9e6dd;
  --ink:#11110f;
  --muted:#6c6b64;
  --line:#d4d0c6;
  --accent:#dfff00;
  --accent-ink:#11110f;
  --dark:#10100f;
  --dark-2:#1b1b18;
  --dark-line:#35352f;
  --white:#faf9f4;
  --sidebar:286px;
  --topbar:68px;
  --radius:16px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  --sans:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;color:var(--ink);background:var(--bg);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased}
button,input{font:inherit}
a{color:inherit;text-decoration:none}
button{cursor:pointer}
::selection{background:var(--accent);color:var(--accent-ink)}
.topbar{position:fixed;z-index:80;inset:0 0 auto 0;height:var(--topbar);display:flex;align-items:center;border-bottom:1px solid var(--line);background:rgba(242,240,233,.94);backdrop-filter:blur(16px);padding:0 24px}
.brand{width:calc(var(--sidebar) - 24px);display:flex;align-items:center;gap:10px;line-height:1.05}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;background:var(--ink);color:var(--accent);border-radius:8px;font-weight:900;font-size:19px}
.brand b{display:block;font-size:14px;letter-spacing:.01em}.brand small{display:block;color:var(--muted);font-size:10px;margin-top:4px;letter-spacing:.12em;text-transform:uppercase}
.topnav{display:flex;gap:5px;margin-left:auto}.topnav a{font-size:13px;padding:8px 11px;border-radius:8px;color:#3d3c37}.topnav a:hover{background:var(--surface-2);color:var(--ink)}
.icon-button{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:10px;min-width:40px;height:40px;display:grid;place-items:center;font-size:22px}.mobile-only{display:none}
.sidebar{position:fixed;z-index:50;left:0;top:var(--topbar);bottom:0;width:var(--sidebar);border-right:1px solid var(--line);background:var(--bg);overflow:auto}
.sidebar-inner{padding:20px 14px 18px}
.search-box{display:block;border-bottom:1px solid var(--line);padding:0 3px 18px;margin-bottom:18px}.search-box span{display:block;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.14em;margin-bottom:6px}.search-box input{width:100%;border:0;background:transparent;outline:0;color:var(--ink);font-size:13px;padding:5px 0}.search-box input::placeholder{color:#a19f97}
.nav-group{margin:0 0 18px}.nav-group-title{font-size:10px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);padding:0 8px;margin-bottom:5px}.stage-nav-link{display:grid;grid-template-columns:30px 1fr;gap:7px;align-items:start;padding:7px 8px;border-radius:8px;font-size:11.5px;line-height:1.35;color:#44433e}.stage-nav-link:hover,.stage-nav-link.active{background:var(--surface);color:var(--ink)}.stage-nav-link.active{box-shadow:inset 2px 0 0 var(--ink)}.stage-nav-link .n{font-family:var(--mono);color:#98968e}.stage-nav-link.active .n{color:var(--ink);font-weight:700}
.sidebar-foot{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:10px;border-top:1px solid var(--line);padding:16px 8px 0}.status-dot{width:7px;height:7px;border-radius:50%;background:#72b62b;box-shadow:0 0 0 3px rgba(114,182,43,.12)}
.main{margin-left:var(--sidebar);padding-top:var(--topbar);min-width:0}.section{padding:82px clamp(28px,5vw,86px);border-bottom:1px solid var(--line)}.anchor-section{scroll-margin-top:var(--topbar)}
.hero{min-height:760px;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden;background:radial-gradient(circle at 75% 15%,rgba(223,255,0,.28),transparent 28%),linear-gradient(180deg,#f7f5ee,var(--bg))}.hero:after{content:"";position:absolute;right:-110px;bottom:-220px;width:540px;height:540px;border:1px solid rgba(17,17,15,.12);border-radius:50%;box-shadow:0 0 0 52px rgba(17,17,15,.025),0 0 0 104px rgba(17,17,15,.018)}
.eyebrow{display:flex;gap:8px;position:relative;z-index:1}.eyebrow span,.kicker{font-size:10px;font-weight:800;letter-spacing:.15em;text-transform:uppercase}.eyebrow span{border:1px solid var(--ink);padding:6px 8px;border-radius:999px}.eyebrow span:first-child{background:var(--accent)}
.hero h1{font-size:clamp(48px,7.4vw,112px);line-height:.91;letter-spacing:-.065em;margin:28px 0 30px;max-width:1050px;position:relative;z-index:1}.hero h1 em{font-style:normal;color:transparent;-webkit-text-stroke:1.5px var(--ink)}
.hero-lede{font-size:clamp(17px,2vw,24px);line-height:1.45;max-width:790px;margin:0;color:#3b3a35;position:relative;z-index:1}.hero-actions{display:flex;gap:10px;margin-top:34px;position:relative;z-index:1}
.button{border:1px solid var(--ink);border-radius:10px;min-height:44px;padding:10px 16px;display:inline-flex;align-items:center;justify-content:center;font-weight:750;font-size:13px;background:transparent;color:var(--ink)}.button.primary{background:var(--ink);color:var(--accent)}.button.primary:hover{background:#272722}.button.ghost:hover{background:var(--surface)}.button.tiny{min-height:36px;padding:7px 11px;font-size:11px}
.stats-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:72px;max-width:1000px;position:relative;z-index:1}.stat{background:var(--surface);padding:18px}.stat strong{display:block;font-size:28px;line-height:1;font-family:var(--mono);letter-spacing:-.04em}.stat span{display:block;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.1em;margin-top:8px}
.section-heading{max-width:880px;margin-bottom:36px}.section-heading h2{font-size:clamp(32px,4vw,56px);line-height:1.02;letter-spacing:-.045em;margin:10px 0 14px}.section-heading p{color:var(--muted);font-size:16px;max-width:760px;margin:0}.split-heading{max-width:none;display:flex;justify-content:space-between;align-items:end;gap:30px}.split-heading>div{max-width:820px}
.principle-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}.principle-card{position:relative;background:var(--surface);padding:34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);min-height:280px}.principle-card.emphasis{background:var(--accent)}.principle-card .num{font-family:var(--mono);color:var(--muted);font-size:11px}.principle-card h3{font-size:25px;letter-spacing:-.03em;margin:34px 0 12px}.principle-card p{max-width:560px;color:#55534c;margin:0}.text-link{border:0;background:none;padding:0;margin-top:26px;font-weight:800;font-size:12px;text-decoration:underline;text-underline-offset:4px}
.code-chain{display:flex;flex-wrap:wrap;gap:6px;margin-top:24px}.code-chain code{font-family:var(--mono);font-size:10px;background:rgba(17,17,15,.08);padding:6px 7px;border-radius:6px}.code-chain i{font-style:normal;font-size:10px;padding-top:5px;color:#555}
.state-section{background:#e4e1d7}.state-machine{display:flex;gap:0;overflow:auto;padding:6px 0 18px}.state-node{position:relative;flex:0 0 auto;min-width:105px;padding:18px 12px 14px;border:1px solid #bdb9ae;background:var(--surface);font:700 10px/1.25 var(--mono);text-align:center}.state-node:not(:last-child){border-right:0}.state-node:not(:last-child):after{content:"→";position:absolute;z-index:2;right:-8px;top:50%;transform:translateY(-50%);background:#e4e1d7;padding:2px;color:#777}.microcopy{color:var(--muted);font-size:11px;margin:0;font-family:var(--mono)}
.stage-groups{display:flex;flex-direction:column;gap:42px}.stage-group-head{display:grid;grid-template-columns:220px 1fr;gap:18px;padding-bottom:12px;border-bottom:1px solid var(--ink);margin-bottom:0}.stage-group-head h3{font-size:16px;margin:0}.stage-group-head p{margin:0;color:var(--muted);font-size:12px}.stage-list{border-top:0}.stage-card{display:grid;grid-template-columns:70px minmax(250px,1.4fr) minmax(220px,1fr) 42px;gap:18px;align-items:center;padding:18px 4px;border-bottom:1px solid var(--line);transition:.18s}.stage-card:hover{background:rgba(255,254,250,.66);padding-left:12px;padding-right:12px}.stage-number{font:800 24px/1 var(--mono);letter-spacing:-.06em}.stage-title{font-weight:780;font-size:14px;line-height:1.35}.stage-meta{display:flex;gap:6px;flex-wrap:wrap;margin-top:7px}.tag{font:700 8.5px/1 var(--mono);letter-spacing:.03em;border:1px solid var(--line);padding:5px 6px;border-radius:5px;color:#66645e;background:var(--surface)}.tag.write{border-color:#d7b297;color:#844d25;background:#fff5ed}.tag.seo{border-color:#a8b98e;color:#4a6428;background:#f4faea}.stage-desc{font-size:11px;color:var(--muted);line-height:1.45}.stage-open{width:36px;height:36px;border:1px solid var(--line);background:var(--surface);border-radius:50%;font-size:18px}.stage-card:hover .stage-open{background:var(--ink);color:var(--accent);border-color:var(--ink)}
.dark-section{background:var(--dark);color:var(--white);border-bottom-color:var(--dark-line)}.dark-section .section-heading p{color:#aaa89f}.kicker.light{color:var(--accent)}.doc-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--dark-line);border-left:1px solid var(--dark-line)}.doc-card{border-right:1px solid var(--dark-line);border-bottom:1px solid var(--dark-line);padding:26px;background:var(--dark);min-height:190px;display:flex;flex-direction:column;align-items:flex-start}.doc-card:hover{background:var(--dark-2)}.doc-card small{font:700 9px var(--mono);color:#85847d}.doc-card h3{font-size:18px;margin:22px 0 8px;letter-spacing:-.02em}.doc-card p{font-size:11.5px;color:#aaa89f;margin:0 0 22px}.doc-card button{margin-top:auto;color:var(--accent);border:0;background:none;padding:0;font-weight:800;font-size:11px}
.worker-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.worker-card{border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);padding:26px;min-height:210px;display:flex;flex-direction:column}.worker-index{font:800 10px var(--mono);color:var(--muted)}.worker-card h3{font-size:19px;line-height:1.15;margin:35px 0 10px}.worker-card p{font-size:12px;color:var(--muted);margin:0}.worker-card button{margin-top:auto;align-self:flex-start}.lock-callout{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:16px;background:var(--accent);padding:28px;border-radius:var(--radius)}.lock-callout h3{margin:8px 0 0;font-size:20px;letter-spacing:-.02em}.lock-callout .button{white-space:nowrap;background:rgba(255,255,255,.3)}
.pitfalls-section{display:grid;grid-template-columns:minmax(180px,.55fr) minmax(320px,1fr);gap:42px;align-items:center;background:#fff3e6}.pitfall-number{font:900 clamp(120px,18vw,280px)/.72 var(--mono);letter-spacing:-.1em;color:#d84b14}.pitfall-copy h2{font-size:clamp(32px,4vw,56px);line-height:1.04;letter-spacing:-.045em;margin:10px 0 16px}.pitfall-copy p{color:#6c5145;max-width:720px}.pitfall-copy .button{margin-top:15px}
.runbook-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line)}.runbook-grid article{padding:30px;border-right:1px solid var(--line);background:var(--surface)}.runbook-grid article:last-child{border-right:0}.runbook-grid b{font-size:20px}.runbook-grid p{font-size:12px;color:var(--muted);min-height:78px}.runbook-grid a,.runbook-grid button{font-size:11px;font-weight:800;text-decoration:underline;text-underline-offset:4px}
.footer{padding:42px clamp(28px,5vw,86px);background:#d8d4c9;display:flex;justify-content:space-between;gap:30px;font-size:11px;color:#55534d}.footer div{display:flex;gap:15px}.footer b{color:var(--ink)}.footer p{margin:0;max-width:620px;text-align:right}
.backdrop{position:fixed;z-index:100;inset:0;background:rgba(10,10,9,.46);backdrop-filter:blur(3px)}.reader{position:fixed;z-index:110;right:0;top:0;bottom:0;width:min(860px,calc(100vw - 120px));background:#fbfaf5;box-shadow:-20px 0 60px rgba(0,0,0,.16);transform:translateX(102%);transition:transform .24s ease;display:flex;flex-direction:column}.reader.open{transform:none}.reader-head{display:flex;justify-content:space-between;gap:24px;padding:26px 28px 18px;border-bottom:1px solid var(--line)}.reader-head h2{font-size:25px;letter-spacing:-.03em;margin:5px 0}.reader-head p{margin:0;color:var(--muted);font-size:11px}.reader-actions{display:flex;align-items:start;gap:6px}.reader-tabs{display:flex;gap:4px;padding:10px 28px;border-bottom:1px solid var(--line);overflow:auto}.reader-tab{white-space:nowrap;border:0;background:transparent;padding:8px 10px;border-radius:7px;font-size:10px;font-weight:750;color:var(--muted)}.reader-tab:hover,.reader-tab.active{background:var(--ink);color:var(--accent)}.reader-body{overflow:auto;padding:30px 38px 70px;font-size:14px}.reader-body h1,.reader-body h2,.reader-body h3,.reader-body h4{line-height:1.15;letter-spacing:-.025em}.reader-body h1{font-size:31px}.reader-body h2{font-size:24px;margin-top:34px}.reader-body h3{font-size:18px;margin-top:28px}.reader-body p,.reader-body li{color:#393833}.reader-body pre{position:relative;background:#141412;color:#ecebe4;border-radius:12px;padding:20px;overflow:auto;font:12px/1.65 var(--mono);white-space:pre-wrap;word-break:break-word}.reader-body code{font-family:var(--mono);font-size:.9em;background:#e9e6dd;padding:2px 5px;border-radius:4px}.reader-body pre code{background:none;padding:0}.reader-body blockquote{margin:18px 0;padding:4px 18px;border-left:3px solid var(--accent);color:#5c5a53}.reader-body table{width:100%;border-collapse:collapse;font-size:11px}.reader-body th,.reader-body td{border:1px solid var(--line);padding:8px;vertical-align:top;text-align:left}.reader-body th{background:var(--surface-2)}.reader-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}.loading{color:var(--muted);font-family:var(--mono);font-size:12px}.copy-success{background:#365c1c!important;color:#fff!important;border-color:#365c1c!important}
@media(max-width:1100px){:root{--sidebar:244px}.stats-grid{grid-template-columns:repeat(3,1fr)}.doc-grid,.worker-grid{grid-template-columns:repeat(2,1fr)}.stage-card{grid-template-columns:54px minmax(220px,1.4fr) minmax(180px,1fr) 38px}.principle-grid{grid-template-columns:1fr 1fr}}
@media(max-width:820px){:root{--topbar:62px}.topbar{padding:0 14px}.brand{width:auto}.topnav{display:none}.mobile-only{display:grid;margin-left:auto}.sidebar{width:min(310px,86vw);transform:translateX(-102%);transition:transform .22s;box-shadow:12px 0 30px rgba(0,0,0,.14);z-index:90}.sidebar.open{transform:none}.main{margin-left:0}.section{padding:62px 20px}.hero{min-height:720px;padding-top:100px}.hero h1{font-size:clamp(48px,15vw,78px)}.hero h1 em{-webkit-text-stroke:1px var(--ink)}.stats-grid{grid-template-columns:repeat(2,1fr);margin-top:52px}.principle-grid,.doc-grid,.worker-grid,.runbook-grid{grid-template-columns:1fr}.principle-card{min-height:230px}.split-heading{align-items:flex-start;flex-direction:column}.stage-group-head{grid-template-columns:1fr}.stage-card{grid-template-columns:45px 1fr 38px;gap:10px}.stage-desc{display:none}.lock-callout{align-items:flex-start;flex-direction:column}.pitfalls-section{grid-template-columns:1fr}.pitfall-number{font-size:150px}.runbook-grid article{border-right:0;border-bottom:1px solid var(--line)}.runbook-grid article:last-child{border-bottom:0}.footer{flex-direction:column}.footer p{text-align:left}.reader{width:100vw}.reader-head{padding:18px 16px 14px}.reader-head h2{font-size:18px}.reader-actions .button.ghost{display:none}.reader-tabs{padding:8px 14px}.reader-body{padding:24px 18px 60px}.reader-head>div:first-child{min-width:0}.reader-head p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:56vw}}
@media(max-width:480px){.eyebrow{flex-wrap:wrap}.hero-actions{flex-direction:column;align-items:stretch}.stats-grid{grid-template-columns:1fr 1fr}.stat{padding:14px}.stat strong{font-size:23px}.section-heading h2{font-size:38px}.stage-number{font-size:18px}.stage-title{font-size:13px}.doc-card{min-height:165px}.reader-actions{gap:4px}.reader-head .button.tiny{padding:6px 9px}.footer div{flex-direction:column;gap:4px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reader,.sidebar{transition:none}}