/* Shared styles for the public pages. Tokens match site/landing.html.
   Dark by default, light when the viewer's system asks for it. */
:root {
  --bg:#0b0e13; --card:#121722; --line:#232b3a;
  --text:#e8ebf1; --dim:#a3abbb; --accent:#4f8cff;
  --warn-bg:#1b1407; --warn-line:#4a3a16; --warn-text:#e8d9b0;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg:#f6f7f9; --card:#fff; --line:#e3e6ec;
    --text:#121722; --dim:#4a5365; --accent:#2f6fe4;
    --warn-bg:#fdf6e3; --warn-line:#e4d3a0; --warn-text:#5b4708;
  }
}
* { box-sizing: border-box; }
body {
  margin:0; background:var(--bg); color:var(--text);
  font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif;
}
.wrap { max-width:820px; margin:0 auto; padding:0 20px; }
.wrap.wide { max-width:960px; }

header { padding:20px 0; display:flex; justify-content:space-between; align-items:center; gap:16px; flex-wrap:wrap; }
.brand { font-weight:800; letter-spacing:.02em; color:var(--text); text-decoration:none; }
nav a { color:var(--dim); text-decoration:none; margin-left:18px; font-size:15px; }
nav a:hover { color:var(--text); }

h1 { font-size:clamp(26px,4.5vw,38px); line-height:1.15; margin:0 0 10px; text-wrap:balance; }
h2 { font-size:21px; margin:32px 0 10px; }
h3 { font-size:17px; margin:22px 0 6px; }
p, li { color:var(--text); }
.lede { color:var(--dim); font-size:18px; max-width:62ch; margin:0 0 24px; }
.updated { color:var(--dim); font-size:14px; margin:0 0 28px; }
a { color:var(--accent); }

main { padding-bottom:40px; }
section { padding:8px 0; }
ul { padding-left:20px; }
li { margin:6px 0; }

.btn { display:inline-block; padding:11px 20px; border-radius:8px; background:var(--accent);
       color:#fff; text-decoration:none; font-weight:600; }
.btn.ghost { background:transparent; color:var(--text); border:1px solid var(--line); margin-left:10px; }

.card { background:var(--card); border:1px solid var(--line); border-radius:12px; padding:18px; }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:14px; }
.price { font-size:32px; font-weight:800; margin:4px 0 2px; }
.price small { font-size:15px; font-weight:500; color:var(--dim); }

/* Every public page carries this line. It is not decoration. */
.notice { border:1px solid var(--line); background:var(--card); border-radius:10px;
          padding:14px 16px; color:var(--dim); font-size:14px; margin:0 0 24px; }
.draft { border:1px dashed var(--warn-line); background:var(--warn-bg); color:var(--warn-text);
         border-radius:10px; padding:14px 16px; font-size:14px; margin:0 0 24px; }
.draft strong { color:var(--warn-text); }

table { border-collapse:collapse; width:100%; margin:12px 0; font-size:15px; }
th, td { text-align:left; padding:9px 10px; border-bottom:1px solid var(--line); vertical-align:top; }
th { color:var(--dim); font-weight:600; }

footer { padding:28px 0 48px; color:var(--dim); font-size:14px; border-top:1px solid var(--line); margin-top:36px; }
footer a { color:var(--dim); margin-right:16px; text-decoration:none; }
footer a:hover { color:var(--text); }
footer p { color:var(--dim); margin:14px 0 0; }

@media (max-width:480px) { nav a { margin:0 14px 0 0; } header { gap:8px; } }

/* The educational-research line that sits in every footer, above the copyright. */
.footnote { color:var(--dim); font-size:13px; margin:0 0 10px; max-width:70ch; }