/* Chronological Data Models - compendium stylesheet */
:root{
  --bg:#EEF2F7; --ink:#1B2430; --navy:#1F4E79; --bronze:#8A6D3B;
  --rule:#C8D2DD; --card:#FFFFFF; --navy-d:#173A5A; --tint:#DCE4EE;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font:16px/1.68 "Trebuchet MS","DejaVu Sans",sans-serif;
  padding-bottom:56px}
h1,h2,h3,h4{font-family:Rockwell,"Bookman Old Style",Georgia,serif;
  line-height:1.22;color:var(--navy-d);margin:1.5em 0 .5em}
h1{font-size:2.05rem;margin-top:.2em;letter-spacing:.2px}
h2{font-size:1.42rem;border-bottom:2px solid var(--rule);padding-bottom:.28em}
h3{font-size:1.12rem;color:var(--bronze)}
p{margin:0 0 1.05em}
a{color:var(--navy);text-decoration:none;border-bottom:1px solid rgba(31,78,121,.35)}
a:hover{color:var(--bronze);border-bottom-color:var(--bronze)}
code,.mono,table,.data{font-family:"Courier New",monospace}
ul,ol{margin:0 0 1.1em;padding-left:1.35em}
li{margin:.28em 0}
hr{border:0;border-top:1px solid var(--rule);margin:2em 0}

/* ---------- step rail ---------- */
.rail{position:sticky;top:0;z-index:40;background:#F7FAFD;
  border-bottom:1px solid var(--rule);box-shadow:0 2px 10px rgba(27,36,48,.06)}
.rail-top{max-width:1180px;margin:0 auto;display:flex;align-items:flex-end;
  justify-content:space-between;gap:18px;padding:10px 20px 6px}
.brand{display:flex;align-items:center;gap:10px;border:0;padding-bottom:6px}
.brand:hover{border:0}
.brand-mark{display:inline-flex;align-items:flex-end;gap:3px;height:26px}
.brand-mark i{width:6px;background:var(--navy);border-radius:1px}
.brand-mark i:nth-child(1){height:9px}
.brand-mark i:nth-child(2){height:17px}
.brand-mark i:nth-child(3){height:26px;background:var(--bronze)}
.brand-word{font-family:Rockwell,"Bookman Old Style",Georgia,serif;
  font-size:.82rem;letter-spacing:.16em;color:var(--navy-d);white-space:nowrap}

.steps{display:flex;align-items:flex-end;gap:8px;margin:0;padding:0;list-style:none}
.step{position:relative;display:flex;align-items:flex-end}
.step summary{list-style:none;cursor:pointer;display:flex;flex-direction:column;
  justify-content:flex-end;gap:1px;width:132px;padding:6px 8px 6px;
  background:var(--tint);color:var(--navy-d);
  clip-path:polygon(0 100%,0 34%,58% 34%,58% 0,100% 0,100% 100%);
  transition:background .18s ease,color .18s ease}
.step summary::-webkit-details-marker{display:none}
.step summary:hover{background:#C9D6E6}
.step:nth-child(1) summary{min-height:54px}
.step:nth-child(2) summary{min-height:60px}
.step:nth-child(3) summary{min-height:66px}
.step:nth-child(4) summary{min-height:72px}
.step:nth-child(5) summary{min-height:78px}
.step-num{font-family:"Courier New",monospace;font-size:.63rem;letter-spacing:.1em;
  text-transform:uppercase;opacity:.85}
.step-name{font-family:Rockwell,"Bookman Old Style",Georgia,serif;font-size:.72rem;
  line-height:1.15;max-width:118px}
.step.is-active summary{background:var(--navy);color:#F7FAFD}
.step.is-active summary:hover{background:var(--navy-d)}
.step.is-active summary::after{content:"";position:absolute;left:9px;bottom:4px;
  width:7px;height:7px;border-radius:50%;background:var(--bronze)}
.panel{position:absolute;top:calc(100% + 2px);right:0;min-width:236px;margin:0;
  padding:8px;list-style:none;background:var(--card);border:1px solid var(--rule);
  border-top:3px solid var(--bronze);box-shadow:0 10px 24px rgba(27,36,48,.14);z-index:45}
.panel li{margin:0}
.panel a{display:block;padding:7px 9px;font-size:.86rem;border:0;border-radius:3px}
.panel a:hover{background:var(--bg)}
.panel a[aria-current="true"]{background:var(--navy);color:#F7FAFD}

.axis{height:9px;border-top:1px solid var(--rule);
  background:repeating-linear-gradient(90deg,var(--rule) 0 1px,transparent 1px 16px)}
.axis::after{content:"";display:block;height:9px;
  background:repeating-linear-gradient(90deg,rgba(138,109,59,.55) 0 1px,transparent 1px 64px)}

/* ---------- page ---------- */
.page{max-width:1000px;margin:0 auto;padding:34px 20px 60px}
.crumb{font-family:"Courier New",monospace;font-size:.72rem;letter-spacing:.06em;
  color:var(--bronze);text-transform:uppercase;margin-bottom:.4em}
.lede{font-size:1.06rem;color:#33465C}
.card{background:var(--card);border:1px solid var(--rule);border-radius:6px;
  padding:20px 22px;margin:1.5em 0;box-shadow:0 1px 3px rgba(27,36,48,.05)}
.card.tint{background:#F5F8FC;border-left:4px solid var(--navy)}
figure{margin:1.6em 0;background:var(--card);border:1px solid var(--rule);
  border-radius:6px;padding:12px}
figure img{display:block;width:100%;height:auto;border-radius:3px}
figcaption{font-size:.82rem;color:#44566B;padding-top:9px;font-style:italic}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.mini{background:var(--card);border:1px solid var(--rule);border-radius:6px;padding:14px}
.mini h3{margin-top:0}
.graphic{margin:1.6em 0;background:var(--card);border:1px solid var(--rule);
  border-radius:6px;padding:14px;overflow:hidden}
.graphic svg{display:block;width:100%;height:auto}
table{border-collapse:collapse;width:100%;font-size:.86rem;margin:1.2em 0;
  background:var(--card)}
caption{caption-side:top;text-align:left;font-weight:bold;color:var(--navy-d);
  padding-bottom:.5em}
th,td{border:1px solid var(--rule);padding:7px 9px;text-align:left}
th{background:#E8EEF6;color:var(--navy-d)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:2px 14px;font-size:.9rem}
.kv dt{font-weight:bold;color:var(--navy-d)}
.kv dd{margin:0}

/* ---------- form ---------- */
.form-row{display:flex;flex-direction:column;gap:4px;margin-bottom:14px}
label{font-size:.86rem;font-weight:bold;color:var(--navy-d)}
input,select,textarea{font:inherit;padding:9px 10px;border:1px solid var(--rule);
  border-radius:4px;background:var(--card);color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--bronze);outline-offset:1px}
.submit{font:inherit;font-weight:bold;background:var(--navy);color:#F7FAFD;border:0;
  border-radius:4px;padding:11px 22px;cursor:pointer;letter-spacing:.04em}
.submit:hover{background:var(--navy-d)}

/* ---------- footer ---------- */
.foot{background:#E4EBF3;border-top:3px solid var(--navy);margin-top:20px}
.foot-grid{max-width:1000px;margin:0 auto;padding:30px 20px 10px;
  display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:24px}
.foot-h{font-size:.95rem;margin:0 0 .6em;text-transform:uppercase;letter-spacing:.08em}
.foot-addr{font-size:.86rem;line-height:1.6}
.foot-list{list-style:none;margin:0;padding:0;font-size:.86rem}
.foot-list a{border:0}
.foot-note{max-width:1000px;margin:0 auto;padding:0 20px 26px;font-size:.78rem;
  color:#4C5C70}
.cookie-strip{position:fixed;bottom:0;left:0;right:0;z-index:60;
  background:#1B2430;color:#E8EEF6;border-top:2px solid var(--bronze)}
.cookie-strip p{max-width:1000px;margin:0 auto;padding:9px 20px;font-size:.8rem}
.cookie-strip a{color:#E8B86A;border-color:rgba(232,184,106,.5)}

/* ---------- narrow ---------- */
@media (max-width:760px){
  .rail-top{flex-direction:column;align-items:stretch}
  .steps{flex-direction:column;align-items:stretch;gap:6px}
  .step{display:block}
  .step summary{width:100%;min-height:0;clip-path:none;border-radius:4px;
    flex-direction:row;align-items:center;justify-content:space-between;padding:9px 11px}
  .step-name{max-width:none}
  .step.is-active summary::after{position:static;margin-left:8px}
  .panel{position:static;min-width:0;margin:4px 0 8px;box-shadow:none;
    border-top-width:1px;border-left:3px solid var(--bronze)}
  .grid2,.grid3,.foot-grid{grid-template-columns:1fr}
  h1{font-size:1.6rem}
}