/* School Launch business explainer: shared look (palette and type from courses/shared/course.css, light and dark). */
:root{
  --ground:#F5F0E6; --paper:#FFFDF8; --linen:#EDE4D3; --ink:#1F1B16; --muted:#5A5247; --line:#D9CFBC;
  --forge:#8C3A1F; --forge-ink:#FFFFFF; --brass:#B08A3E; --focus:#1F4E5A;
  --c1:#2F5D84; --c2:#B3261E; --c3:#2F6B3A; --c4:#8A5A00; --fill1:rgba(47,93,132,.22); --fill2:rgba(179,38,30,.20); --grid:#E6DDCC; --fill3:rgba(47,107,58,.20);
  --display:'Cinzel','Trajan Pro',Georgia,serif;
  --serif:'Source Serif 4',Georgia,'Times New Roman',serif;
  --sans:'Source Sans 3','Segoe UI',system-ui,-apple-system,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --ground:#17130F; --paper:#211C17; --linen:#2B241D; --ink:#EFE7D8; --muted:#B8AC98; --line:#3E352B;
    --forge:#E08A5F; --forge-ink:#17130F; --brass:#C9A55E; --focus:#8FC3CF;
    --c1:#8FC1EA; --c2:#FF8A80; --c3:#9BD3A3; --c4:#E8C26A; --fill1:rgba(143,193,234,.24); --fill2:rgba(255,138,128,.22); --grid:#2E271F; --fill3:rgba(155,211,163,.22);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --ground:#17130F; --paper:#211C17; --linen:#2B241D; --ink:#EFE7D8; --muted:#B8AC98; --line:#3E352B;
  --forge:#E08A5F; --forge-ink:#17130F; --brass:#C9A55E; --focus:#8FC3CF;
  --c1:#8FC1EA; --c2:#FF8A80; --c3:#9BD3A3; --c4:#E8C26A; --fill1:rgba(143,193,234,.24); --fill2:rgba(255,138,128,.22); --grid:#2E271F; --fill3:rgba(155,211,163,.22);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.5;overflow-x:hidden}
a{color:var(--forge)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:3px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:var(--ground);padding:.5rem .8rem;z-index:30}
.skip:focus{left:.5rem;top:.5rem}
.noscript{padding:12px 16px;background:var(--paper);border:1px solid var(--line);border-radius:8px}
.m{font-family:var(--serif);font-style:italic}
.num{font-variant-numeric:tabular-nums}

.x{max-width:1180px;margin:0 auto;padding:14px 16px 28px}
.xhead{border-bottom:2px solid var(--forge);padding-bottom:8px;margin-bottom:14px}
.xhead .kicker{margin:0;font-size:13px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.xhead h1{font-family:var(--serif);font-size:30px;margin:2px 0 4px;color:var(--forge);line-height:1.15}
.xhead .sub{margin:0;color:var(--muted);max-width:62em}

.layout{display:grid;grid-template-columns:minmax(0,1fr) 370px;gap:18px;align-items:start}
.stage{min-width:0;display:flex;flex-direction:column;gap:10px}
.side{min-width:0;display:flex;flex-direction:column;gap:12px}
.cv{display:block;width:100%;background:var(--paper);border:1px solid var(--line);border-radius:10px;touch-action:none}
.cv:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.hint{margin:0;font-size:14px;color:var(--muted)}
.card{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.card h2{font-family:var(--serif);font-size:19px;margin:0 0 8px;color:var(--ink)}
.card h3{font-size:16px;margin:12px 0 4px}
.card p{margin:6px 0}

button{font:inherit;color:inherit}
.btn{min-height:44px;padding:8px 14px;border-radius:8px;border:2px solid var(--forge);background:transparent;color:var(--forge);font-weight:700;cursor:pointer;font-size:15px}
.btn.primary{background:var(--forge);color:var(--forge-ink)}
.btn[aria-pressed="true"]{background:var(--forge);color:var(--forge-ink)}
.btn:disabled{opacity:.45;cursor:default}
.btns{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.chips{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.chip{min-height:36px;min-width:44px;padding:4px 10px;border-radius:999px;border:1px solid var(--line);background:var(--ground);cursor:pointer;font-size:14.5px;font-variant-numeric:tabular-nums}
.chip:hover{border-color:var(--forge)}
.chip[aria-pressed="true"]{background:var(--forge);border-color:var(--forge);color:var(--forge-ink)}
.seg{display:flex;flex-wrap:wrap;gap:0}
.seg button{min-height:44px;padding:6px 12px;border:2px solid var(--forge);background:transparent;color:var(--forge);font-weight:700;cursor:pointer;font-size:15px;margin-left:-2px}
.seg button:first-child{border-radius:8px 0 0 8px;margin-left:0}
.seg button:last-child{border-radius:0 8px 8px 0}
.seg button[aria-pressed="true"]{background:var(--forge);color:var(--forge-ink)}
select{font:inherit;font-size:16px;width:100%;min-height:44px;border:1px solid var(--muted);border-radius:8px;padding:6px 8px;background:var(--ground);color:var(--ink)}
.field{display:flex;flex-direction:column;gap:2px;margin:8px 0}
.field > label,.field .lt{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-weight:600;font-size:15px}
.field output{font-weight:700;color:var(--forge);font-variant-numeric:tabular-nums;font-family:var(--serif)}
input[type=range]{width:100%;min-height:40px;accent-color:var(--forge);margin:0}
.check{display:flex;align-items:center;gap:8px;min-height:36px;cursor:pointer;font-size:15px}
input[type=checkbox]{width:18px;height:18px;accent-color:var(--forge);margin:0}
.key{display:flex;flex-wrap:wrap;gap:4px 16px;font-size:14px;color:var(--muted);margin:0;padding:0;list-style:none}
.key i{display:inline-block;width:20px;height:0;border-top:3px solid;vertical-align:4px;margin-right:6px}
.key i.dash{border-top-style:dashed}
.key .k1{color:var(--c1)}.key .k2{color:var(--c2)}.key .k3{color:var(--c3)}.key .k4{color:var(--c4)}.key .kf{color:var(--forge)}.key .ki{color:var(--ink)}

.read{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 12px;font-variant-numeric:tabular-nums;font-size:15.5px}
.read dt{color:var(--muted)}
.read dd{margin:0;text-align:right;font-weight:600;overflow-wrap:anywhere}
.read .big{font-size:20px;color:var(--forge);font-family:var(--serif)}
.tbl-wrap{overflow-x:auto;max-width:100%}
table.t{border-collapse:collapse;width:100%;font-variant-numeric:tabular-nums;font-size:14.5px}
table.t caption{text-align:left;font-size:14px;color:var(--muted);padding-bottom:4px}
table.t th,table.t td{padding:4px 6px;border-bottom:1px solid var(--line);text-align:right;white-space:nowrap}
table.t th{font-weight:700;color:var(--muted);font-size:13.5px}
table.t tr.now td{background:var(--linen);font-weight:700;color:var(--forge)}

.guide{margin-top:18px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;align-items:start}
.guide p,.guide li{font-size:16px}
.guide ol{margin:6px 0 0;padding-left:22px}
.guide li{margin:0 0 6px}
.verse{font-style:italic}
.xfoot{margin-top:18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:8px}

@media (max-width:1000px){.guide{grid-template-columns:1fr 1fr}.guide .card:last-child{grid-column:1/-1}}
@media (max-width:880px){.layout{grid-template-columns:minmax(0,1fr)}.guide{grid-template-columns:minmax(0,1fr)}}
@media (max-width:560px){.x{padding:10px 12px 22px}.xhead h1{font-size:25px}.card{padding:10px 12px}.read{font-size:15px}}

/* Embedded in a lesson (iframe): no site header or footer. */
body.embedded{background:transparent}
body.embedded .site-head,body.embedded .site-foot{display:none}

/* Site header and footer (as on every inner page; values from courses/shared/course.css). */
.site-head,.site-foot{font-family:var(--sans);color:var(--ink);line-height:1.55}
.site-head .wrap,.site-foot .wrap{max-width:1120px;margin:0 auto;padding-inline:20px}
.site-head{background:var(--ground);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px;flex-wrap:wrap}
.site-head .brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.site-head .brand span{font-family:var(--display);font-weight:700;font-size:22px;color:var(--forge);letter-spacing:.03em}
.site-head .nav{display:flex;gap:4px;flex-wrap:wrap}
.site-head .nav a{text-decoration:none;color:var(--ink);font-weight:600;font-size:15px;padding:8px 12px;border-radius:6px}
.site-head .nav a:hover{background:var(--linen)}
.site-foot{border-top:1px solid var(--line);padding-block:28px;background:var(--ground);font-size:17px}
.site-foot a{color:var(--forge)}
.site-foot .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:baseline}
.site-foot .eyebrow{font-size:13px;letter-spacing:.14em;text-transform:uppercase;font-weight:700;color:var(--muted)}
.site-foot .muted{color:var(--muted)}
.site-foot p{margin:0}
.site-foot .foot-links{display:flex;flex-wrap:wrap;gap:4px 18px;margin:0 0 10px;padding:0;list-style:none;font-size:15px;font-weight:600}
.site-foot .foot-links a{text-decoration:none}
.site-foot .foot-links a:hover{text-decoration:underline}
.site-foot .foot-base{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.site-foot .motto{font-family:var(--serif);font-style:italic}
.site-foot .network{display:flex;flex-direction:column;gap:12px;width:100%}
.site-foot .network h2{margin:0}
.site-foot .network-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.site-foot .network-list li{display:flex;flex-direction:column;gap:2px;font-size:15px}
.site-foot .network-list a{font-family:var(--serif);font-weight:600;font-size:18px}
.site-foot .network-list span{color:var(--muted)}
.site-foot .sl-foot-line{font-size:15px}
.site-foot .sl-foot-legal{font-size:13px;margin-top:6px}
@media (max-width:700px){.site-foot .network-list{grid-template-columns:minmax(0,1fr);gap:12px}}
@media (max-width:560px){.site-head .nav a{padding:6px 8px;font-size:14.5px}}
@media print{.site-head,.site-foot,.skip{display:none!important}.cv{border:1px solid #999}}


/* Thumbnail mode (#thumb): only the main drawing, 16:9, for the 480×270 thumb.webp. */
body.thumbmode .site-head,body.thumbmode .site-foot,body.thumbmode .xhead,body.thumbmode .side,body.thumbmode .guide,
body.thumbmode .xfoot,body.thumbmode .key,body.thumbmode .skip,body.thumbmode .below,body.thumbmode .hint{display:none!important}
body.thumbmode .x{max-width:none;padding:0}
body.thumbmode .layout{display:block}
body.thumbmode .cv.graph{aspect-ratio:16/9;border:0;border-radius:0}

/* ---- shared page bits ---- */
.muted{color:var(--muted)}
.note{font-size:14.5px;color:var(--muted);margin:8px 0 0}
.calc{font-size:14.5px;font-variant-numeric:tabular-nums;background:var(--linen);border-radius:8px;padding:6px 10px;margin:10px 0 0;overflow-wrap:anywhere}
.calc code,.xl code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13.5px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.three{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0 10px}
input[type=number]{font:inherit;font-size:16px;width:100%;min-height:44px;border:1px solid var(--muted);border-radius:8px;padding:6px 8px;background:var(--ground);color:var(--ink);font-variant-numeric:tabular-nums}
.money-in{position:relative}
.money-in::before{content:"$";position:absolute;left:9px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
.money-in input{padding-left:20px}
.nrow{display:flex;align-items:center;gap:8px}
.nrow input{flex:1;min-width:0}
.btn.sq{min-width:44px;padding:4px 0;font-size:20px;line-height:1}
.presets{margin:0 0 6px}
.presets .lbl,.chips .lbl{font-weight:600;font-size:15px;margin-right:2px}
.warn{color:var(--c2);font-weight:600}
.good{color:var(--c3)}
.bad{color:var(--c2)}
table.t td:first-child,table.t th:first-child{text-align:left}
@media (max-width:560px){.three{grid-template-columns:1fr 1fr}}

/* ---- page: How an Asset Wears Down ---- */
.controls{margin-bottom:14px}
.cgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0 16px}
.mrow{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;margin-top:4px}
.methods button{font-size:14.5px;padding:6px 10px}
.pair{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:14px;align-items:start}
.cv.graph{aspect-ratio:4/3}
.yearf{margin-top:8px}
.formula{margin-top:14px}
.xl{grid-template-columns:auto auto auto;justify-content:start;gap:4px 18px}
.xl dd{text-align:left}
.xl dd.val{text-align:right;color:var(--forge);font-family:var(--serif)}
table.sched td,table.sched th{white-space:nowrap}
table.sched th{white-space:normal;vertical-align:bottom}
table.sched tbody tr{cursor:pointer}
table.sched tr.now td{background:var(--linen);font-weight:700;color:var(--forge)}
table.sched tfoot td{font-weight:700;border-top:2px solid var(--line);border-bottom:0}
table.sched td.how{font-size:12.5px;color:var(--muted);font-weight:600}
table.sched input{width:6.5em;min-height:36px;padding:2px 6px;font-size:15px;text-align:right}
.ucol[hidden]{display:none}
@media (max-width:1000px){.pair{grid-template-columns:minmax(0,1fr)}.cgrid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.cv.graph{aspect-ratio:1/1}.methods button{font-size:13.5px;padding:6px 7px}
  .xl{grid-template-columns:minmax(0,1fr) auto}.xl dt{grid-column:1/-1;margin-top:6px}table.sched{font-size:13.5px}table.sched td,table.sched th{padding:4px 4px}}
body.thumbmode .controls,body.thumbmode .pair > .card + .card,body.thumbmode .formula,body.thumbmode #chartHead,body.thumbmode .yearf{display:none!important}
body.thumbmode .pair{display:block}
body.thumbmode .pair > .card{padding:0;border:0;border-radius:0}
.xl dt.on,.xl dd.on{color:var(--forge);font-weight:700}
.xl dt{color:var(--muted)}
.pair .cv{border:0;border-radius:0;background:transparent}
@media (max-width:560px){.methods{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.methods button{line-height:1.2;padding:6px 4px}}