:root{--forest:#1f4d2b;--leaf:#2f6b3a;--sprout:#7bb661;--pumpkin:#e07a24;--ink:#1b2a21;--muted:#5b675f;--cream:#fbfaf6;--paper:#ffffff;--line:#e4e0d4;--max:1200px}
*{box-sizing:border-box}
@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--cream);color:var(--ink);font:17px/1.75 "Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;line-height:1.2;color:var(--forest)}
img{max-width:100%;height:auto;display:block}
a{color:var(--leaf);text-underline-offset:3px}
a:hover{color:var(--pumpkin)}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px;z-index:50}
/* top bar */
.topbar{background:var(--forest);color:#fff;position:sticky;top:0;z-index:30}
.topbar .container{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:18px}
.logo{display:flex;align-items:baseline;gap:10px;color:#fff;text-decoration:none}
.logo b{font-family:Georgia,serif;font-size:24px;letter-spacing:.5px}
.logo small{color:var(--sprout);font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:1.5px}
.menu ul{list-style:none;display:flex;gap:2px;margin:0;padding:0;flex-wrap:wrap;justify-content:flex-end}
.menu a{color:#e8f1e3;text-decoration:none;font-size:14.5px;font-weight:600;padding:7px 9px;border-radius:6px;display:block}
.menu a:hover,.menu a[aria-current=page]{background:rgba(255,255,255,.12);color:#fff}
.menu a.demo{background:var(--pumpkin);color:#fff}
#m{display:none}.ham{display:none;color:#fff;font-size:28px;cursor:pointer}
@media(max-width:1180px){.ham{display:block}.menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--forest);padding:8px 20px 16px}.menu ul{flex-direction:column}#m:checked~.menu{display:block}}
/* intro */
.intro{background:var(--paper);border-bottom:1px solid var(--line)}
.intro .container{display:grid;grid-template-columns:1fr 280px;gap:36px;align-items:end;padding-top:40px}
.badge{display:inline-block;background:#eef5e9;color:var(--forest);border-left:4px solid var(--pumpkin);padding:6px 12px;font-weight:700;font-size:15px;margin-bottom:14px}
.intro h1{font-size:clamp(30px,4.2vw,50px);margin:0 0 14px}
.intro .sub{font-size:19px;color:var(--muted);margin:0 0 22px;max-width:62ch}
.intro .pic img{max-height:330px;width:auto;margin-left:auto}
.cta{display:inline-block;background:var(--pumpkin);color:#fff;font-weight:700;text-decoration:none;padding:12px 20px;border-radius:4px;margin:0 8px 40px 0}
.cta.ghost{background:transparent;color:var(--forest);border:2px solid var(--forest)}
.cta:hover{color:#fff;filter:brightness(1.07)}.cta.ghost:hover{color:var(--forest)}
@media(max-width:820px){.intro .container{grid-template-columns:1fr}.intro .pic{display:none}}
.trail{font-size:14px;color:var(--muted);padding-top:14px}
.trail ol{list-style:none;margin:0;padding:0;display:flex;gap:8px}
.trail li+li:before{content:"/";margin-right:8px;color:var(--line)}
/* body with toc */
.layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:48px;padding-top:36px;padding-bottom:60px}
.toc{position:sticky;top:84px;align-self:start;font-size:14.5px;border-left:3px solid var(--sprout);padding-left:14px}
.toc strong{display:block;font-family:Georgia,serif;color:var(--forest);margin-bottom:6px}
.toc ol{margin:0;padding-left:18px}.toc li{margin:4px 0}
.toc a{color:var(--ink);text-decoration:none}.toc a:hover{color:var(--pumpkin)}
@media(max-width:960px){.layout{grid-template-columns:minmax(0,1fr)}.toc{position:static}}
.toc{overflow-wrap:anywhere;min-width:0}
.prose h2{font-size:clamp(25px,3vw,34px);margin:52px 0 12px;scroll-margin-top:84px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:21px;margin:30px 0 6px;scroll-margin-top:84px}
.prose p,.prose li{max-width:76ch}
.prose ul,.prose ol{padding-left:22px}
.prose li{overflow-wrap:anywhere}
.shot{margin:30px 0;background:var(--paper);border:1px solid var(--line);padding:14px;border-radius:4px}
.shot img{margin:0 auto}
.shot figcaption{font-size:14px;color:var(--muted);margin-top:8px;font-style:italic}
.ask{display:inline-block;max-width:100%;background:#fff3e6;color:#7a3a0a;border:1px solid #f2c79f;border-radius:4px;padding:1px 8px;font-size:15.5px;font-weight:600;margin:2px 0}
.asklist{list-style:none;padding:0!important}
.asklist li{margin:6px 0;padding-left:26px;position:relative}
.asklist li:before{content:"?";position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;background:var(--leaf);color:#fff;font-size:12px;font-weight:700;text-align:center;line-height:18px}
.tbl{overflow-x:auto;margin:22px 0}
table{border-collapse:collapse;width:100%;background:var(--paper);font-size:15px}
th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:var(--forest);color:#fff;font-weight:600}
.note{background:#eef5e9;border:1px solid #cfe2c4;padding:16px 20px;margin:24px 0;border-radius:4px}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:22px 0}
.col{background:var(--paper);border-top:4px solid var(--pumpkin);padding:18px 20px;border-radius:0 0 4px 4px;box-shadow:0 1px 0 var(--line)}
.prose .col h3{margin-top:0;font-size:19px}
dl.terms dt{font-weight:700;font-family:Georgia,serif;color:var(--forest);font-size:19px;margin-top:22px}
dl.terms dd{margin:4px 0 0}
details{background:var(--paper);border:1px solid var(--line);padding:12px 16px;margin:8px 0;border-radius:4px}
summary{cursor:pointer;font-weight:700}
.band{background:var(--pumpkin);color:#fff;padding:38px 0}
.band .container{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.band h2{color:#fff;margin:0;font-size:28px}
.band p{margin:6px 0 0;max-width:60ch}
.band a{background:#fff;color:var(--pumpkin);font-weight:700;text-decoration:none;padding:12px 22px;border-radius:4px}
.foot{background:#efece2;color:var(--ink);padding:40px 0 22px;font-size:15px}
.foot .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:24px}
.foot h2{font-size:17px;margin:0 0 8px}
.foot ul{list-style:none;margin:0;padding:0}.foot li{margin:4px 0}
.foot .small{font-size:13px;color:var(--muted);border-top:1px solid var(--line);margin-top:26px;padding-top:14px}
.logo small{white-space:nowrap}
@media(min-width:1181px){
 .topbar .container{flex-wrap:wrap;padding-top:8px;padding-bottom:6px;gap:2px 18px}
 .menu{width:100%}
 .menu ul{justify-content:flex-start}
 .menu li:last-child{margin-left:auto}
 .toc{top:120px}
 .prose h2,.prose h3{scroll-margin-top:120px}
}