:root{color-scheme:light;--ink:#15273a;--muted:#52667a;--line:#dce4eb;--blue:#155dd7;--cyan:#52d7de;--navy:#102438;--paper:#f3f6f9;--gold:#ffcc67;--good:#12644c;--warn:#885311;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0;color:var(--ink);background:var(--paper);line-height:1.8}a{color:var(--blue);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,summary{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #1385ed;outline-offset:4px}button{cursor:pointer}::selection{background:#bfecfa}.topbar{height:68px;background:var(--navy);color:white;display:flex;align-items:center;justify-content:space-between;padding:0 5vw;border-bottom:1px solid #ffffff20}.brand{font-weight:700;letter-spacing:.03em;display:flex;align-items:center;gap:12px}.mark{width:32px;height:32px;display:grid;place-items:center;background:var(--cyan);color:var(--navy);font-size:18px;border-radius:8px}.topmeta{font:13px ui-monospace,SFMono-Regular,Consolas,monospace;color:#b4c8db}.layout{display:grid;grid-template-columns:235px minmax(0,1000px);gap:48px;max-width:1400px;margin:auto;padding:42px 36px 80px}.sidebar{align-self:start;position:sticky;top:32px;max-height:calc(100vh - 64px);overflow:auto}.sidebar h2{font-size:12px;text-transform:uppercase;letter-spacing:.15em;color:var(--muted);margin:0 12px 15px}.sidebar nav{display:grid;gap:4px}.sidebar a{font-size:14px;text-decoration:none;line-height:1.45;color:var(--muted);border-left:2px solid transparent;padding:9px 12px;display:flex;gap:12px}.sidebar a span{font-family:ui-monospace,monospace;color:#8192a4}.sidebar a.active{color:var(--blue);background:#e5edf8;border-left-color:var(--blue);font-weight:650}.sidebar a:hover{color:var(--blue);background:#e9eff5}.side-note{border-top:1px solid var(--line);margin:26px 12px 0;padding-top:18px;font-size:13px;color:var(--muted)}main{min-width:0}.eyebrow{font-size:13px;letter-spacing:.12em;font-weight:700;color:var(--blue);text-transform:uppercase}h1{font-size:clamp(2rem,3.8vw,3.45rem);line-height:1.27;letter-spacing:-.04em;margin:13px 0 20px;max-width:820px}h1 em{font-style:normal;color:var(--blue)}.lead{font-size:18px;color:var(--muted);max-width:780px;margin:0 0 25px}.badges{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:30px}.badge{font-size:13px;border:1px solid var(--line);background:white;padding:4px 11px;border-radius:5px;color:var(--muted)}.badge.blue{background:#e7effe;border-color:#cfddfa;color:#164ba7}.badge.gold{background:#fff3da;border-color:#f0deb5;color:#805217}.decision{display:grid;grid-template-columns:1fr 1fr;gap:0;background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden}.decision>div{padding:25px 27px}.decision>div+div{border-left:1px solid var(--line)}.decision h3{font-size:17px;margin:0 0 8px}.decision p{font-size:15px;margin:0;color:var(--muted)}.decision .recommended{background:#eaf2ff}.label{display:block;font-size:12px;letter-spacing:.07em;font-weight:700;color:var(--blue);margin-bottom:7px}.section{margin-top:62px;scroll-margin-top:28px}.section-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}.section-number{font:13px ui-monospace,monospace;color:var(--blue);border:1px solid #bdd0e9;border-radius:5px;padding:4px 7px}.section h2{margin:0;font-size:26px;line-height:1.4;letter-spacing:-.025em}.section h3{font-size:19px;margin:27px 0 12px}.section h4{font-size:16px;margin:0 0 7px}.section p{margin:12px 0}.section ul,.section ol{padding-left:24px}.section li{padding-left:3px;margin:6px 0}.subtle{color:var(--muted);font-size:14px}.note{padding:18px 22px;border-left:3px solid var(--blue);background:#e9f1ff;border-radius:0 8px 8px 0;margin:22px 0;font-size:15px}.note p{margin:0}.note.warn{background:#fff4df;border-left-color:#d89426}.note strong{font-weight:700}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{padding:24px;background:white;border:1px solid var(--line);border-radius:10px}.card h3{margin:0 0 9px!important;font-size:17px}.card p{margin:0!important;font-size:15px;color:var(--muted)}.card .mini{display:block;color:var(--blue);font:12px ui-monospace,monospace;margin-bottom:12px}.source{display:inline-block;font-size:13px;margin-top:12px}.arch{border-radius:12px;background:var(--navy);color:#dbe9f6;padding:30px;margin-top:22px;overflow:hidden}.arch-head{display:flex;justify-content:space-between;gap:18px;padding-bottom:24px;border-bottom:1px solid #ffffff25;font-size:13px;color:#a7bed3}.arch-head strong{color:var(--cyan);letter-spacing:.08em}.arch-flow{display:grid;grid-template-columns:1fr 70px 1.1fr 70px 1.1fr;align-items:center;margin:28px 0}.node{border:1px solid #52667b;border-radius:8px;padding:20px 15px;min-height:165px;background:#182e43}.node b{display:block;font-size:20px;color:white;margin:5px 0 10px}.node span{font-size:12px;font-family:ui-monospace,monospace;color:var(--cyan)}.node p{font-size:14px;margin:0;color:#b8cde0;line-height:1.65}.node.gateway{border-color:var(--cyan);background:#17383f}.connector{text-align:center;font-size:25px;color:var(--cyan);line-height:1.4}.connector small{display:block;font-size:11px;color:#b4c8dc;line-height:1.5;letter-spacing:-.02em}.arch-bottom{display:grid;grid-template-columns:1fr 1fr;gap:20px;border-top:1px solid #ffffff25;padding-top:20px;font-size:14px}.arch-bottom p{margin:0;color:#bdd0e2}.arch-bottom strong{color:white}.sequence{counter-reset:step;display:grid;gap:0;margin:22px 0;padding-left:0!important;list-style:none}.sequence li{counter-increment:step;position:relative;padding:0 0 22px 51px;margin:0;min-height:60px}.sequence li:before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:1px;background:#e2edff;color:var(--blue);width:31px;height:31px;border-radius:7px;display:grid;place-items:center;font:13px ui-monospace,monospace;z-index:1}.sequence li:after{content:"";position:absolute;left:15px;top:32px;bottom:0;border-left:1px solid #cdd9e6}.sequence li:last-child:after{display:none}.sequence p{margin:2px 0!important;font-size:15px;color:var(--muted)}code{font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;font-size:.87em;overflow-wrap:anywhere;background:#e8eef4;border-radius:3px;padding:2px 5px}pre{margin:0;overflow:auto;font-size:13px;line-height:1.7;background:#102438;color:#d9e8f6;padding:23px;tab-size:2}pre code{font-size:inherit;background:transparent;padding:0;overflow-wrap:normal;color:inherit}.codebox{border-radius:9px;overflow:hidden;border:1px solid #263e54;margin:17px 0}.codebar{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#20374c;color:#c5d8eb;padding:9px 17px;font-size:12px;line-height:1.5}.copy{border:1px solid #6e8297;background:transparent;color:#e0edfa;padding:4px 10px;border-radius:4px;font-size:12px;min-height:29px}.copy:hover{background:#3d5266}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:9px;background:#fff;margin:18px 0}table{border-collapse:collapse;width:100%;min-width:620px;font-size:14px;line-height:1.65}th,td{text-align:left;vertical-align:top;padding:14px 17px;border-bottom:1px solid var(--line)}th{font-size:13px;background:#e9eff5;font-weight:650;color:#52667a}tr:last-child td{border-bottom:0}td:first-child{font-weight:600}.state{font:12px ui-monospace,monospace;padding:4px 7px;background:#eaf1f7;border-radius:4px;color:#33536d;white-space:nowrap}.state.good{background:#e4f2ed;color:var(--good)}.state.warn{background:#fff0cf;color:var(--warn)}.state.bad{background:#fce8e8;color:#973c3c}.state-flow{display:flex;align-items:center;flex-wrap:wrap;gap:10px;padding:23px;background:white;border:1px solid var(--line);border-radius:9px;margin:20px 0}.state-flow i{font-style:normal;color:#8190a0}.tool{background:white;border:1px solid var(--line);border-radius:9px;margin:14px 0;overflow:hidden}summary{cursor:pointer;list-style:none;position:relative;display:flex;align-items:center;gap:15px;padding:19px 22px;font-weight:600;line-height:1.5;padding-right:48px}summary::-webkit-details-marker{display:none}summary:after{content:"+";font-size:24px;font-weight:400;position:absolute;right:21px;color:var(--blue)}details[open]>summary:after{content:"−"}summary .toolname{font:14px ui-monospace,monospace;overflow-wrap:anywhere;color:var(--blue)}summary .verb{background:#ecf2fb;color:#476583;padding:3px 7px;border-radius:4px;font:11px ui-monospace,monospace;flex-shrink:0}.detail-body{padding:0 22px 21px;border-top:1px solid var(--line)}.detail-body .codebox{margin-bottom:0}.detail-body p{font-size:15px;color:var(--muted)}.timeline{display:grid;gap:16px}.milestone{display:grid;grid-template-columns:70px 1fr;background:white;border:1px solid var(--line);border-radius:9px;overflow:hidden}.mile-index{display:grid;place-items:center;color:var(--blue);background:#e8f0fc;font:20px ui-monospace,monospace}.mile-content{padding:21px 24px}.mile-content h3{margin:0 0 8px!important}.mile-content p{margin:5px 0!important;font-size:15px;color:var(--muted)}.accept{display:grid;grid-template-columns:1fr 1fr;gap:12px;list-style:none;padding:0!important}.accept li{margin:0;padding:17px 18px 17px 43px;border:1px solid var(--line);background:white;border-radius:8px;position:relative;font-size:14px}.accept li:before{content:"□";position:absolute;left:17px;color:var(--blue);font-size:18px;top:12px}.accept b{display:block;margin-bottom:2px}.reference-list{list-style:none;padding:0!important;display:grid;gap:10px}.reference-list li{padding:15px 20px;background:white;border:1px solid var(--line);border-radius:7px;margin:0;display:flex;gap:20px;align-items:start}.ref-id{font:13px ui-monospace,monospace;color:#8c9aa8;margin-top:4px;flex-shrink:0}.reference-list a{font-weight:600;font-size:15px}.reference-list p{margin:4px 0 0!important;font-size:14px;color:var(--muted)}footer{border-top:1px solid var(--line);margin-top:45px;padding-top:20px;font-size:13px;color:var(--muted);display:flex;justify-content:space-between;gap:20px}.mobile-toc{display:none}.tiny-list{font-size:14px;color:var(--muted);padding-left:18px!important}.statline{display:flex;flex-wrap:wrap;gap:24px;color:var(--muted);font-size:13px;border-bottom:1px solid var(--line);padding:16px 0;margin-bottom:28px}.statline b{color:var(--ink);margin-right:5px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1600px){.layout{max-width:1460px;grid-template-columns:235px minmax(0,1080px);gap:65px}}@media(max-width:1050px){.layout{grid-template-columns:190px minmax(0,1fr);gap:28px;padding:32px 24px 60px}.sidebar a{font-size:13px;padding:9px 7px;gap:9px}.arch{padding:23px}.arch-flow{grid-template-columns:1fr 37px 1fr 37px 1fr}.node{padding:15px 12px;min-height:183px}.node b{font-size:18px}.connector small{font-size:10px}.grid-3{grid-template-columns:1fr}.topbar{padding:0 24px}.topmeta{font-size:12px}}@media(max-width:760px){.topbar{height:61px;padding:0 20px}.brand{font-size:14px;gap:9px}.mark{width:28px;height:28px}.topmeta{font-size:11px}.topmeta .desktop-only{display:none}.layout{display:block;padding:27px 20px 45px}.sidebar{display:none}.mobile-toc{display:block;margin:25px 0;background:#fff;border:1px solid var(--line);border-radius:8px}.mobile-toc summary{font-size:15px;padding:13px 17px}.mobile-toc nav{display:grid;grid-template-columns:1fr 1fr;padding:2px 17px 17px;gap:11px}.mobile-toc a{font-size:13px;text-decoration:none}.eyebrow{font-size:11px}h1{font-size:34px;margin:13px 0 18px}.lead{font-size:16px;line-height:1.8}.badges{gap:7px;margin-bottom:23px}.badge{font-size:11px;padding:4px 8px}.decision{grid-template-columns:1fr}.decision>div{padding:20px}.decision>div+div{border-left:0;border-top:1px solid var(--line)}.decision h3{font-size:16px}.decision p{font-size:14px}.section{margin-top:43px}.section h2{font-size:23px}.section-head{gap:10px;margin-bottom:19px}.section-number{font-size:12px}.section h3{font-size:18px}.grid-2,.arch-bottom,.accept{grid-template-columns:1fr}.grid-3{gap:12px}.card{padding:20px}.arch{padding:22px 19px}.arch-head{font-size:11px;padding-bottom:17px;gap:10px}.arch-flow{grid-template-columns:1fr;gap:12px;margin:20px 0}.node{min-height:0;padding:18px}.node b{font-size:20px;margin:3px 0 6px}.connector{display:flex;align-items:center;justify-content:center;gap:16px;line-height:1;font-size:24px;transform:none}.connector .arrow{transform:rotate(90deg);display:inline-block}.connector small{display:inline;font-size:11px}.arch-bottom{gap:14px;font-size:13px}summary{gap:10px;padding:17px 17px 17px;padding-right:42px;flex-wrap:wrap}.detail-body{padding:0 16px 16px}.toolname{font-size:12px!important}.codebar{padding:9px 12px}pre{padding:17px;font-size:12px}.note{padding:16px 18px;font-size:14px}.milestone{grid-template-columns:49px 1fr}.mile-index{font-size:16px}.mile-content{padding:18px}.mile-content p{font-size:14px}.sequence li{padding-left:44px}.sequence p{font-size:14px}.accept li{font-size:14px}.reference-list li{padding:14px 15px;gap:13px}.reference-list a{font-size:14px}.reference-list p{font-size:13px}footer{flex-direction:column;gap:5px}.statline{gap:9px 20px;font-size:12px}.state-flow{gap:8px;padding:17px}.state{font-size:11px}.topbar .brand-word{display:none}}@media print{.sidebar,.mobile-toc,.copy,.topbar{display:none}.layout{display:block;padding:0;max-width:none}.section{break-inside:avoid;margin-top:30px}body{background:white;font-size:12px}.arch{color:black;background:#eef3f8}.node,.node.gateway{background:white;color:black}.node b,.node p,.arch-bottom p,.arch-bottom strong,.arch-head strong{color:black}details:not([open]) .detail-body{display:block}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#edf2f7;color:#15273a}.codebar{background:#dae3ed;color:#15273a}a{color:#155dd7}}