:root{
  --bg:#fff;--surface:#f5f5f7;--surface2:#fbfbfd;--text:#1d1d1f;--muted:#6e6e73;
  --line:#d2d2d7;--green:#6cc04a;--green2:#4f9f36;--blue:#06c;--warn:#fff8e7;
  --danger:#fff1f0;--info:#eef8ff;--max:1180px;--sidebar:286px;
  --shadow:0 12px 32px rgba(0,0,0,.07);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue","Noto Sans Thai",Arial,sans-serif;font-size:17px;line-height:1.65}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.08)}
.topbar-inner{max-width:var(--max);margin:auto;height:52px;padding:0 22px;display:flex;align-items:center;gap:18px}
.brand{font-weight:650;letter-spacing:-.01em;white-space:nowrap}
.brand .dot{color:var(--green)}
.toplinks{margin-left:auto;display:flex;gap:18px;font-size:14px}
.hero{border-bottom:1px solid var(--line);background:linear-gradient(#fff,#fbfbfd)}
.hero-inner{max-width:var(--max);margin:auto;padding:62px 22px 52px}
.eyebrow{font-size:14px;font-weight:700;color:var(--green2);letter-spacing:.08em;text-transform:uppercase}
h1{font-size:52px;line-height:1.04;letter-spacing:-.045em;margin:10px 0 14px;max-width:880px}
.subtitle{font-size:22px;color:var(--muted);max-width:790px;line-height:1.45}
.meta{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.pill{font-size:13px;border:1px solid var(--line);border-radius:999px;padding:6px 10px;background:#fff}
.search-wrap{max-width:720px;margin-top:30px;position:relative}
.search{width:100%;font:inherit;border:1px solid var(--line);border-radius:12px;padding:14px 48px 14px 16px;outline:none;background:#fff}
.search:focus{border-color:#8ab4f8;box-shadow:0 0 0 4px rgba(0,102,204,.08)}
.search-icon{position:absolute;right:16px;top:14px;color:var(--muted)}
.layout{max-width:var(--max);margin:auto;display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr);gap:56px;padding:42px 22px 90px}
.sidebar{position:sticky;top:74px;align-self:start;max-height:calc(100vh - 96px);overflow:auto;padding-right:10px}
.sidebar .toc-title{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}
.sidebar a{display:block;color:var(--text);font-size:14px;line-height:1.3;padding:8px 10px;border-radius:8px}
.sidebar a:hover{background:var(--surface);text-decoration:none}
.sidebar a.active{background:#edf7e9;color:#2f7222;font-weight:650}
.sidebar .sub{padding-left:18px;color:var(--muted)}
main{min-width:0}
section.chapter{scroll-margin-top:82px;padding:12px 0 62px;border-bottom:1px solid var(--line)}
section.chapter:last-child{border-bottom:0}
.chapter-no{font-size:14px;color:var(--green2);font-weight:700;margin-bottom:4px}
h2{font-size:38px;line-height:1.16;letter-spacing:-.03em;margin:0 0 16px}
h3{font-size:26px;line-height:1.25;letter-spacing:-.02em;margin:36px 0 12px}
h4{font-size:19px;margin:26px 0 8px}
.lead{font-size:20px;color:#424245;max-width:790px}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}
.card{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff}
.card.soft{background:var(--surface2)}
.card h3,.card h4{margin-top:0}
.steps{counter-reset:step;list-style:none;padding:0;margin:18px 0}
.steps li{counter-increment:step;position:relative;padding:0 0 20px 48px}
.steps li:before{content:counter(step);position:absolute;left:0;top:1px;width:30px;height:30px;border-radius:50%;background:var(--surface);display:grid;place-items:center;font-weight:700;font-size:14px}
.callout{border-radius:14px;padding:18px 20px;margin:20px 0;border:1px solid var(--line)}
.callout.tip{background:#f3faef;border-color:#cbe6bf}
.callout.info{background:var(--info);border-color:#cfe8f8}
.callout.warn{background:var(--warn);border-color:#f0dca8}
.callout.danger{background:var(--danger);border-color:#f2c8c5}
.callout strong{display:block;margin-bottom:4px}
.path{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--surface);border:1px solid var(--line);padding:2px 7px;border-radius:6px;font-size:.9em}
.menu-demo{border:1px solid var(--line);border-radius:18px;background:#f8faf7;overflow:hidden;margin:24px 0;box-shadow:var(--shadow)}
.menu-demo .bar{height:42px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 14px;font-size:13px;color:var(--muted)}
.menu-demo .ui{display:grid;grid-template-columns:180px 1fr;min-height:300px}
.menu-demo nav{padding:15px;background:#fff;border-right:1px solid var(--line)}
.menu-demo nav div{padding:8px 10px;border-radius:7px;font-size:13px;margin-bottom:3px}
.menu-demo nav .on{background:#eaf5e5;color:#397c2b;font-weight:700}
.menu-demo .panel{padding:22px}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.kpi div{background:white;border:1px solid #e6e6e6;border-radius:10px;padding:16px}
.kpi b{display:block;font-size:26px}
table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
th,td{text-align:left;border-bottom:1px solid var(--line);padding:12px 10px;vertical-align:top}
th{font-weight:650;background:var(--surface2)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em}
.quicklinks{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}
.quicklinks a{display:block;border:1px solid var(--line);border-radius:14px;padding:16px 18px;color:var(--text);font-weight:650;background:white}
.quicklinks a span{display:block;color:var(--muted);font-weight:400;font-size:13px;margin-top:3px}
.quicklinks a:hover{text-decoration:none;box-shadow:var(--shadow)}
.footer{border-top:1px solid var(--line);background:var(--surface2)}
.footer-inner{max-width:var(--max);margin:auto;padding:28px 22px 40px;color:var(--muted);font-size:13px}
.hidden-by-search{display:none!important}
.mobile-toc{display:none}
@media(max-width:900px){
 h1{font-size:42px}.layout{grid-template-columns:1fr;gap:22px}.sidebar{display:none}
 .mobile-toc{display:block;margin:0 0 26px}.grid,.quicklinks{grid-template-columns:1fr}
 .hero-inner{padding-top:44px}.menu-demo .ui{grid-template-columns:135px 1fr}.kpi{grid-template-columns:1fr}
}
@media(max-width:560px){
 body{font-size:16px}.toplinks{display:none}h1{font-size:34px}h2{font-size:31px}.subtitle{font-size:19px}
 .hero-inner,.layout{padding-left:18px;padding-right:18px}.menu-demo .ui{display:block}.menu-demo nav{border-right:0;border-bottom:1px solid var(--line)}
}


:root{--green2:#357b26;--muted:#626269}body{font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Noto Sans Thai",Tahoma,Arial,sans-serif}h1{line-height:1.22}h2,h3{line-height:1.35}a,button,input,select{touch-action:manipulation}button,input,select{font:inherit}button,a,input,select{ -webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,select:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #06c;outline-offset:4px}button{cursor:pointer}.skip{position:fixed;left:16px;top:-80px;z-index:100;background:#fff;padding:12px}.skip:focus{top:10px}.brand a{color:inherit}.subtitle{line-height:1.65}.eyebrow{letter-spacing:.06em}.hero-inner{padding-top:52px;padding-bottom:40px}.search-wrap{max-width:760px}.search-label{display:block;font-size:14px;margin-bottom:8px;font-weight:600}.search-row{position:relative}.search{padding-right:70px}.clear-search{position:absolute;right:8px;top:8px;background:#f5f5f7;border:0;border-radius:8px;padding:7px 10px;font-size:14px}.search-status{font-size:13px;color:var(--muted);min-height:22px;margin:6px 0}.search-results{padding:0;list-style:none;margin:8px 0 0;border:1px solid var(--line);border-radius:12px;background:#fff;max-height:390px;overflow:auto}.search-results[hidden]{display:none}.search-results li+li{border-top:1px solid #eee}.search-results a{display:block;padding:14px 18px}.search-results small{display:block;color:var(--muted);margin-top:4px;line-height:1.5}.search-results mark{background:#e7f2df;color:inherit}.source-note{font-size:14px;color:var(--muted);margin:24px 0 0;max-width:820px}.layout{gap:46px}.sidebar{scrollbar-width:thin}.sidebar a.sub{font-size:13px;padding-top:6px;padding-bottom:6px}.topic{scroll-margin-top:86px;padding:6px 0 12px}.topic>h3:first-child{margin-top:24px}.chapter{scroll-margin-top:86px}.chapter+.chapter{padding-top:42px}.reference{font-size:12px;color:var(--muted);margin-top:20px}.reference a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}figure{margin:26px 0}.figure-open{display:block;border:1px solid #d2d2d7;border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 8px 24px rgba(0,0,0,.04);cursor:zoom-in}.figure-open img{display:block;width:100%;height:auto}figcaption{display:flex;justify-content:space-between;gap:14px;font-size:13px;line-height:1.5;color:var(--muted);padding:12px 2px}figcaption small{display:block;margin-top:4px;font-size:12px}figcaption>a{white-space:nowrap}.breadcrumb-card{background:var(--surface);padding:14px 17px;border-radius:10px;font-size:14px;font-weight:600;overflow-wrap:anywhere}.table-wrap{overflow:auto;margin:20px 0;border:1px solid var(--line);border-radius:12px}table{margin:0;min-width:460px}td:first-child{width:31%;font-weight:600}tr:last-child td{border-bottom:0}th{background:var(--surface)}li{margin-bottom:7px}.steps li{padding-bottom:16px;margin:0}.workflow{display:flex;flex-wrap:wrap;align-items:center;gap:10px;background:var(--surface);padding:18px;border-radius:14px}.workflow a{font-size:14px}.support-card{background:#f3f8ef;border:1px solid #cbe0bd;border-radius:18px;padding:28px}.support-card h4{font-size:25px;margin:10px 0}.button{display:inline-block;background:#0670c9;color:#fff;padding:10px 18px;border-radius:10px;font-weight:600;font-size:15px}.button.secondary{background:#f5f5f7;color:#06c;border:1px solid var(--line)}.button:hover{text-decoration:none;background:#005daf}.button.secondary:hover{background:#eee}.toplinks a{white-space:nowrap}.mobile-nav{display:none}.back-top{font-size:14px;display:inline-block;margin-top:24px}.no-js{background:#fff8e7;padding:14px 20px}.js-only{display:none}html.has-js .js-only{display:block}dialog{border:0;border-radius:16px;padding:0;max-width:min(96vw,1600px);width:max-content;max-height:94vh;background:white;box-shadow:0 24px 90px #0005}dialog::backdrop{background:#000b}.lightbox-toolbar{position:sticky;top:0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 18px;background:#fff;border-bottom:1px solid var(--line);z-index:1}.lightbox-toolbar p{margin:0;font-size:14px}.lightbox-close{padding:9px 14px;background:#f5f5f7;border:0;border-radius:8px}.lightbox-image{display:block;width:auto;max-width:calc(96vw - 32px);max-height:calc(94vh - 85px);height:auto;object-fit:contain;margin:16px}body.modal-open{overflow:hidden}.footer-inner{line-height:1.8}.footer-inner p{margin:8px 0}.topbar-inner{height:56px}.noscript-search{display:none}
@media(min-width:901px){.mobile-nav{display:none!important}}
@media(max-width:900px){.layout{gap:0;padding-top:26px}.sidebar{display:none}.mobile-nav{display:flex;position:sticky;top:56px;z-index:40;align-items:center;gap:10px;background:rgba(255,255,255,.97);padding:10px 20px;border-bottom:1px solid var(--line)}.mobile-nav label{font-size:13px;white-space:nowrap}.mobile-nav select{min-width:0;width:100%;font-size:14px;border:1px solid var(--line);border-radius:8px;padding:8px;background:#fff;color:var(--text)}.topic,.chapter{scroll-margin-top:132px}.hero-inner{padding-top:38px}.quicklinks{grid-template-columns:repeat(3,minmax(0,1fr))}.quicklinks a{font-size:15px;padding:14px}.toplinks{gap:12px}}
@media(max-width:560px){.brand{font-size:15px}.topbar-inner{padding:0 18px}.hero-inner{padding-top:32px;padding-bottom:30px}h1{font-size:36px;letter-spacing:-.025em}.subtitle{font-size:18px}.quicklinks{grid-template-columns:1fr;gap:10px}.quicklinks a{padding:13px 16px}.meta{gap:6px}.pill{font-size:12px}h2{font-size:30px}h3{font-size:24px}figcaption{display:block}figcaption>a{display:inline-block;margin-top:7px}.support-card{padding:22px}.button{overflow-wrap:anywhere;max-width:100%}.callout{padding:16px}.mobile-nav{padding-left:18px;padding-right:18px}.table-wrap{margin-left:0;margin-right:0}.steps li{padding-left:40px}.lightbox-toolbar{gap:10px}.lightbox-close{white-space:nowrap}.chapter-no{font-size:13px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{.topbar,.sidebar,.mobile-nav,.search-wrap,.quicklinks,.back-top,dialog,.js-only{display:none!important}.layout{display:block;max-width:none;padding:0}.hero-inner{padding:0 0 24px;max-width:none}.hero{border:0}body{font-size:11pt;line-height:1.6;color:#000}.chapter{break-inside:auto!important}.chapter+.chapter{break-before:page}.topic{break-inside:auto}h2,h3,h4{break-after:avoid}figure,.callout{break-inside:avoid}.figure-open{box-shadow:none}figure img{max-height:16cm;object-fit:contain}table{min-width:0;font-size:10pt}.table-wrap{overflow:visible}a{color:#174f7d}h1{font-size:30pt}h2{font-size:23pt}h3{font-size:17pt}.footer{background:#fff}.reference{font-size:9pt}}

@media(max-width:900px){html.has-js .mobile-nav{display:flex}}
@media(max-width:900px){section.chapter{scroll-margin-top:132px}}
.fallback-toc{padding:16px 22px;display:flex;gap:14px;flex-wrap:wrap}