:root{
  --paper:#f6f1e8; --card:#fbf8f2; --ink:#161a18; --muted:#5b645e; --line:#d9d1c4;
  --forest:#22352d; --forest-2:#182720; --forest-ink:#f3efe6; --sage:#e3eae1; --warn:#7a5a3e; --ok:#2f6b4f;
  --grade-a:#2f6b4f; --grade-b:#4b6a8a; --grade-c:#7a5a3e; --grade-d:#8a3f3f;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--paper);color:var(--ink)}
body{font-family:"Source Sans 3","Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.5;letter-spacing:.005em}
img,video{max-width:100%;width:100%;height:auto;display:block}
a{color:inherit}
h1,h2,h3{font-family:"Source Serif 4",Georgia,serif;font-weight:500;margin:0;line-height:1.15}
h1{font-size:clamp(30px,4.2vw,46px)}
h2{font-size:clamp(22px,2.6vw,30px)}
h3{font-size:19px}
p{margin:0 0 12px}
.wrap{max-width:1320px;margin:0 auto;padding:0 22px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.wordmark{font-family:"Source Serif 4",Georgia,serif;font-size:22px;letter-spacing:.14em;text-transform:uppercase;text-decoration:none}
.wordmark span{display:block;font-size:11px;letter-spacing:.2em;color:var(--muted)}
.topnav{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}
.topnav a{text-decoration:none;color:var(--muted)}
.topnav a:hover{color:var(--ink)}
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:center;padding:36px 0 26px}
.kicker{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 10px}
.lede{max-width:58ch;color:var(--muted);font-size:17px;margin:12px 0 0}
.ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.btn{display:inline-block;border:1px solid var(--forest);background:var(--forest);color:var(--forest-ink);padding:12px 18px;text-decoration:none;font-weight:600;font-size:15px;cursor:pointer;font-family:inherit}
.btn.secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn.small{padding:8px 12px;font-size:14px}
.btn[disabled]{opacity:.5;cursor:default}
figure{margin:0}
figcaption{font-size:13px;color:var(--muted);padding:8px 0 0}
figcaption b{display:block;color:var(--ink);font-weight:600}
.badge{border:1px solid var(--line);background:var(--card);padding:12px 14px;font-size:13px;color:var(--muted);margin-top:18px;max-width:58ch}
section.block{padding:34px 0;border-top:1px solid var(--line)}
section.block > .kicker{margin-bottom:6px}
section.block > h2{max-width:30ch}
section.block > .lede{font-size:16px;margin-bottom:18px}
.grid{display:grid;gap:14px}
.grid.c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.c3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.c4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--line);padding:16px;display:flex;flex-direction:column;gap:8px}
.card h3{font-size:19px}
.card .price{font-family:"Source Serif 4",Georgia,serif;font-size:26px}
.card .price small{font-family:"Source Sans 3",sans-serif;font-size:13px;color:var(--muted);display:block}
.card ul{margin:0;padding-left:18px;font-size:14px;color:var(--muted)}
.card ul li{margin:3px 0}
.card .state{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.card .state.available{color:var(--ok)}
.card .actions{margin-top:auto;display:flex;gap:8px;flex-wrap:wrap;padding-top:8px}
.card.production{background:transparent}
.card.production h3{font-size:16px}
.card .meta{font-size:13px;color:var(--muted)}
.tier{display:inline-block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;border:1px solid var(--line);padding:2px 7px;color:var(--muted)}
table.compare{width:100%;min-width:760px;border-collapse:collapse;font-size:14px;background:var(--card);border:1px solid var(--line)}
table.compare th,table.compare td{border-top:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
table.compare th{font-family:"Source Sans 3",sans-serif;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
table.compare thead th{border-top:0}
table.compare td.yes{color:var(--ok);font-weight:600}
table.compare td.no{color:var(--muted)}
table.compare .price-row td{font-family:"Source Serif 4",Georgia,serif;font-size:20px}
.scroll{overflow-x:auto}
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;counter-reset:step}
.steps div{background:var(--card);border:1px solid var(--line);padding:14px;font-size:14px}
.steps div b{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.grade{display:inline-block;font-family:"Source Sans 3",sans-serif;font-weight:600;font-size:12px;letter-spacing:.08em;text-transform:uppercase;padding:1px 6px;border:1px solid currentColor;line-height:1.5;vertical-align:baseline;white-space:nowrap}
.grade.a{color:var(--grade-a)} .grade.b{color:var(--grade-b)} .grade.c{color:var(--grade-c)} .grade.d{color:var(--grade-d)}
.claims{width:100%;min-width:760px;border-collapse:collapse;font-size:14px;background:var(--card);border:1px solid var(--line)}
.claims th,.claims td{border-top:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.claims th{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.claims thead th{border-top:0}
.pkg .lines{margin:6px 0 0;padding:0;list-style:none;font-size:14px}
.pkg .lines li{display:flex;justify-content:space-between;gap:12px;padding:6px 0;border-top:1px solid var(--line)}
.pkg .total{display:flex;justify-content:space-between;font-family:"Source Serif 4",Georgia,serif;font-size:20px;padding-top:8px;border-top:2px solid var(--ink)}
.pkg .total small{font-family:"Source Sans 3",sans-serif;font-size:12px;color:var(--muted)}
.directory{background:var(--card);border:1px solid var(--line);padding:18px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px}
.directory ol{margin:0;padding-left:18px;font-size:14px;color:var(--muted)}
form.enroll{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}
form.enroll fieldset{border:1px solid var(--line);background:var(--card);padding:14px;margin:0;min-width:0}
form.enroll legend{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:0 6px}
form.enroll label{display:block;font-size:14px;margin:8px 0 4px}
form.enroll input[type=text],form.enroll input[type=email],form.enroll select,form.enroll textarea{width:100%;border:1px solid var(--line);background:#fff;padding:9px 10px;font:inherit;font-size:15px}
form.enroll textarea{min-height:80px}
.items{display:flex;flex-direction:column}
.items label{display:flex;align-items:flex-start;gap:10px;padding:8px 0;border-top:1px solid var(--line);margin:0;cursor:pointer}
.items label:first-of-type{border-top:0}
.items input{margin-top:5px;width:18px;height:18px;accent-color:var(--forest)}
.items .n{font-weight:600}
.items .s{display:block;font-size:13px;color:var(--muted)}
.items .p{margin-left:auto;white-space:nowrap;font-family:"Source Serif 4",Georgia,serif}
.items .qty{margin-left:8px;width:52px;border:1px solid var(--line);padding:4px;font:inherit}
.summary{border-top:2px solid var(--ink);margin-top:12px;padding-top:10px;font-size:14px}
.summary .line{display:flex;justify-content:space-between;padding:4px 0}
.summary .line.big{font-family:"Source Serif 4",Georgia,serif;font-size:22px}
.note{font-size:13px;color:var(--muted)}
.result{border:1px solid var(--ok);padding:12px 14px;margin-top:12px;font-size:15px;display:none}
.result.show{display:block}
.result.error{border-color:var(--warn)}
footer{border-top:1px solid var(--line);padding:26px 0 40px;font-size:13px;color:var(--muted)}
footer p{max-width:90ch}
footer .prov{font-family:ui-monospace,Menlo,monospace;font-size:11px;word-break:break-all}
.chapter{max-width:74ch}
.chapter h2{margin:36px 0 12px;font-size:clamp(22px,2.4vw,28px)}
.chapter p{font-size:17px;line-height:1.62;margin:0 0 16px}
.chapter h3{margin:22px 0 8px}
.chapter ul,.chapter ol{font-size:17px;line-height:1.6}
.chapter strong{font-weight:600}
.locked{border:1px solid var(--line);background:var(--card);padding:14px 16px;margin:14px 0;max-width:74ch}
.locked h3{font-size:18px;margin:0 0 4px}
.locked p{margin:0 0 6px;color:var(--muted);font-size:15px}
.locked .state{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.modulehead{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:24px;align-items:center;padding:30px 0 10px}
.toc{background:var(--card);border:1px solid var(--line);padding:14px 16px;font-size:14px;margin:18px 0}
.toc ol{margin:0;padding-left:20px}
.toc li{margin:4px 0}
.toc .free{color:var(--ok);font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin-left:6px}
@media (max-width:1000px){
  .hero,.grid.c4,.grid.c3,.steps,.directory,form.enroll,.modulehead{grid-template-columns:minmax(0,1fr)}
  .grid.c2{grid-template-columns:minmax(0,1fr)}
}
@media (min-width:640px) and (max-width:1000px){
  .grid.c4,.grid.c3,.steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}