/* Prospect Works - single stylesheet. No external resources, no web fonts. */

:root{
  --sand:#f6f2ea;
  --paper:#fffdf8;
  --ink:#1b201d;
  --muted:#4a544f;
  --edge:#d8d1c2;
  --edge-strong:#b9af9b;
  --teal:#0d5c52;
  --teal-dark:#07423a;
  --clay:#8c3a1c;
  --tint:#eae4d6;
  --radius:2px;
  --step:1.25rem;
  --shell:1140px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --serif:Georgia,"Iowan Old Style","Times New Roman",Times,serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--sand);color:var(--ink);
  font:400 1.0625rem/1.65 var(--sans);
  overflow-wrap:break-word;
}
img,svg{max-width:100%;height:auto}

.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 1rem}

.skip{position:absolute;left:-9999px;top:0;background:var(--teal);color:#fff;padding:.7rem 1rem;z-index:20}
.skip:focus{left:0}

a{color:var(--teal-dark);text-underline-offset:2px}
a:hover{color:var(--clay)}
:focus-visible{outline:3px solid var(--clay);outline-offset:2px}

/* ---------- masthead ---------- */
.masthead{background:var(--paper);border-bottom:1px solid var(--edge-strong)}
.masthead-in{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem;padding-top:.85rem;padding-bottom:.85rem}
.wordmark{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);margin-right:auto}
.wordmark-mark{
  display:inline-grid;place-items:center;width:2.1rem;height:2.1rem;
  background:var(--teal);color:var(--sand);font:700 .95rem/1 var(--serif);border-radius:var(--radius)
}
.wordmark-text{font:600 1.18rem/1 var(--serif);letter-spacing:.01em}
.navtoggle{
  display:none;font:600 .95rem/1 var(--sans);color:var(--ink);background:var(--tint);
  border:1px solid var(--edge-strong);border-radius:var(--radius);padding:.55rem .9rem;cursor:pointer
}
.sitenav ul{display:flex;flex-wrap:wrap;gap:.15rem;list-style:none;margin:0;padding:0}
.sitenav a{
  display:block;padding:.45rem .6rem;font-size:.95rem;text-decoration:none;color:var(--muted);
  border-bottom:2px solid transparent
}
.sitenav a:hover{color:var(--teal-dark);border-bottom-color:var(--edge-strong)}
.sitenav a[aria-current="page"]{color:var(--ink);font-weight:600;border-bottom-color:var(--teal)}

/* ---------- layout ---------- */
.layout{display:grid;grid-template-columns:minmax(0,1fr) 19rem;gap:2.5rem;align-items:start}
.col{padding:2.25rem 0 3rem}
.col-wide{max-width:50rem}
.rail{
  position:sticky;top:1rem;margin:2.25rem 0 3rem;padding:1.15rem;
  background:var(--paper);border:1px solid var(--edge);border-radius:var(--radius)
}
.rail-h{font:600 .8rem/1.3 var(--sans);text-transform:uppercase;letter-spacing:.09em;color:var(--muted);margin:0 0 .75rem}
.rail-list{list-style:none;margin:0;padding:0}
.rail-list li{border-top:1px solid var(--edge)}
.rail-list li:first-child{border-top:0}
.rail-list a{display:block;padding:.55rem 0;font-size:.95rem;line-height:1.4;text-decoration:none;color:var(--teal-dark)}
.rail-list a:hover{color:var(--clay);text-decoration:underline}
.rail-list a[aria-current="page"]{font-weight:700;color:var(--ink)}
.rail-note{margin:.9rem 0 0;padding-top:.8rem;border-top:1px solid var(--edge);font-size:.83rem;color:var(--muted)}

/* ---------- prose ---------- */
h1,h2,h3,h4{font-family:var(--serif);line-height:1.22;color:var(--ink);font-weight:600}
h1{font-size:2.15rem;margin:0 0 1rem;letter-spacing:-.01em}
h2{font-size:1.5rem;margin:2.6rem 0 .8rem;padding-bottom:.35rem;border-bottom:1px solid var(--edge)}
h3{font-size:1.16rem;margin:1.9rem 0 .5rem}
h4{font-size:1.02rem;margin:1.4rem 0 .4rem}
p,ul,ol,dl{margin:0 0 1.1rem}
ul,ol{padding-left:1.35rem}
li{margin-bottom:.45rem}
.standfirst{font-size:1.16rem;line-height:1.55;color:var(--muted)}
.meta{font-size:.85rem;color:var(--muted);margin:0 0 1.6rem;padding-bottom:1rem;border-bottom:1px solid var(--edge)}

dl.defs{margin:0 0 1.4rem}
dl.defs dt{font-weight:700;margin-top:1.05rem}
dl.defs dd{margin:.25rem 0 0;padding-left:0;color:var(--muted)}

/* ---------- panels ---------- */
.card{background:var(--paper);border:1px solid var(--edge);border-radius:var(--radius);padding:1.3rem 1.4rem;margin:1.6rem 0}
.card h2,.card h3{margin-top:0;border:0;padding:0}

.disclose{
  background:var(--paper);border:2px solid var(--teal);border-left-width:8px;
  border-radius:var(--radius);padding:1.25rem 1.4rem;margin:1.8rem 0
}
.disclose h2{margin:0 0 .6rem;font-size:1.12rem;border:0;padding:0}
.disclose p{margin:0 0 .7rem}
.disclose p:last-child{margin-bottom:0}

.watch{background:#fbf1ea;border:1px solid #d7ac92;border-left:8px solid var(--clay);border-radius:var(--radius);padding:1.2rem 1.35rem;margin:1.7rem 0}
.watch h3{margin-top:0}
.method{background:var(--tint);border:1px dashed var(--edge-strong);border-radius:var(--radius);padding:1.2rem 1.35rem;margin:1.7rem 0}
.method h3{margin-top:0}
.quick{background:var(--paper);border:1px solid var(--edge-strong);border-top:5px solid var(--teal);border-radius:var(--radius);padding:1.15rem 1.35rem;margin:1.6rem 0}
.quick h2{margin:0 0 .6rem;padding:0;border:0;font-size:1rem;text-transform:uppercase;letter-spacing:.07em;font-family:var(--sans);color:var(--muted)}
.quick p:last-child{margin-bottom:0}

ul.check{list-style:none;padding-left:0}
ul.check li{position:relative;padding-left:1.75rem;margin-bottom:.6rem}
ul.check li::before{
  content:"";position:absolute;left:0;top:.45rem;width:.7rem;height:.7rem;
  border:2px solid var(--teal);border-radius:var(--radius)
}

/* ---------- tables ---------- */
.tablewrap{overflow-x:auto;margin:1.6rem 0;border:1px solid var(--edge);border-radius:var(--radius);background:var(--paper)}
table{border-collapse:collapse;width:100%;min-width:34rem;font-size:.95rem}
caption{text-align:left;padding:.9rem 1rem;font-size:.9rem;color:var(--muted);border-bottom:1px solid var(--edge)}
th,td{text-align:left;vertical-align:top;padding:.7rem .9rem;border-bottom:1px solid var(--edge)}
thead th{background:var(--tint);font-size:.83rem;text-transform:uppercase;letter-spacing:.06em}
tbody th{font-weight:700;background:#faf7f0}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}

/* ---------- affiliate link ---------- */
.cta-wrap{margin:1.5rem 0 .5rem}
.cta{
  display:inline-block;background:var(--teal);color:#fff;text-decoration:none;font-weight:600;
  padding:.85rem 1.5rem;border:1px solid var(--teal-dark);border-radius:var(--radius)
}
.cta:hover{background:var(--teal-dark);color:#fff}
.cta-sm{padding:.6rem 1.1rem;font-size:.95rem}
.cta-note{font-size:.93rem;color:var(--muted);margin:0 0 1.6rem;max-width:44rem}

/* ---------- accordion ---------- */
details.qa{background:var(--paper);border:1px solid var(--edge);border-radius:var(--radius);margin:0 0 .7rem}
details.qa > summary{
  cursor:pointer;padding:.9rem 1.1rem;font-weight:600;font-family:var(--serif);font-size:1.05rem;
  list-style:none;display:flex;justify-content:space-between;gap:1rem;align-items:baseline
}
details.qa > summary::-webkit-details-marker{display:none}
details.qa > summary::after{content:"+";color:var(--teal);font-weight:700}
details.qa[open] > summary::after{content:"\2212"}
details.qa > summary:hover{color:var(--teal-dark)}
.qa-body{padding:0 1.1rem .4rem;border-top:1px solid var(--edge)}
.qa-body p:first-child{margin-top:.9rem}

/* ---------- related ---------- */
.related{margin:2.6rem 0 0;padding-top:1.2rem;border-top:3px double var(--edge-strong)}
.related h2{border:0;padding:0;margin:0 0 .6rem;font-size:1.15rem}
.related ul{list-style:none;padding:0;margin:0}
.related li{padding:.4rem 0;border-bottom:1px solid var(--edge)}

/* ---------- diagram ---------- */
.figure{margin:1.8rem 0;padding:1.2rem;background:var(--paper);border:1px solid var(--edge);border-radius:var(--radius)}
.figure figcaption{margin-top:.8rem;font-size:.88rem;color:var(--muted)}

/* ---------- home ---------- */
.hero{background:var(--paper);border-bottom:1px solid var(--edge)}
.hero-in{padding:2.6rem 0 2.2rem;max-width:52rem}
.hero .kicker{font:600 .78rem/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--clay);margin:0 0 .9rem}
.hero h1{font-size:2.45rem}
.summary-card{margin-top:1.8rem;background:var(--sand);border:1px solid var(--edge-strong);border-radius:var(--radius);padding:1.2rem 1.4rem}
.summary-card h2{margin:0 0 .7rem;font-size:1.05rem;border:0;padding:0;font-family:var(--sans);text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.summary-card ul{margin:0;padding-left:1.2rem}
.summary-card li:last-child{margin-bottom:0}

.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.2rem;margin:1.5rem 0}
.grid2 .card{margin:0}

/* ---------- footer ---------- */
.foot{background:#141a18;color:#ddd9cf;margin-top:3rem;padding:2.4rem 0 2.8rem;font-size:.93rem}
.foot a{color:#a9d6cd}
.foot a:hover{color:#f0c6ab}
.publisher p{margin:0 0 .2rem}
.pub-site{font:600 1.1rem/1.3 var(--serif);color:#fff;margin-bottom:.45rem !important}
.foot-nav{margin-top:1.1rem;line-height:2}
.foot-nav-2{margin-top:.1rem}
.trademark{margin-top:1.2rem;padding-top:1.1rem;border-top:1px solid #333c38;max-width:62rem;color:#bdb8ad}
.reviewed{margin:.8rem 0 0;color:#bdb8ad}

/* ---------- responsive ---------- */
@media (max-width:920px){
  .layout{grid-template-columns:1fr;gap:0}
  .rail{position:static;margin-top:0}
  .grid2{grid-template-columns:1fr}
}
@media (max-width:700px){
  body{font-size:1rem}
  h1{font-size:1.75rem}
  .hero h1{font-size:1.85rem}
  h2{font-size:1.3rem}
  .navtoggle{display:block}
  .sitenav{display:none;flex-basis:100%}
  .sitenav.is-open{display:block}
  .sitenav ul{flex-direction:column;gap:0}
  .sitenav a{padding:.7rem .2rem;border-bottom:1px solid var(--edge)}
  .col{padding-top:1.6rem}
}

.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;font-size:.93em;background:var(--tint);padding:.1rem .3rem;border-radius:var(--radius);word-break:break-all}