/* Survival Library: field-manual look - olive and canvas, readable offline (system fonts only, no downloads). */
:root { --bg:#F4F2EA; --panel:#FFFDF6; --line:#D9D4C3; --fg:#1F2318; --muted:#5E6452; --accent:#4F6B2C; --accent-ink:#FFFFFF;
        --chip:#E7EBDA; --warn:#8A4B12;
        --body: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; --ui: system-ui, -apple-system, "Segoe UI", sans-serif; }
@media (prefers-color-scheme: dark) { :root { --bg:#14160F; --panel:#1C1F16; --line:#33382A; --fg:#E8E6DA; --muted:#A2A893;
        --accent:#9DBF6A; --accent-ink:#11140B; --chip:#262B1D; --warn:#E3A35C; color-scheme: dark; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 var(--body); }
header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px;
         padding: 12px max(16px, 4vw); border-bottom: 2px solid var(--accent); font-family: var(--ui); }
.brand { font-weight: 800; letter-spacing: .5px; text-transform: uppercase; color: var(--fg); text-decoration: none; }
.brand span { color: var(--accent); }
nav { display: flex; gap: 16px; } nav a { color: var(--fg); text-decoration: none; font-size: 15px; }
main { max-width: 1100px; margin: 0 auto; padding: 24px max(16px, 4vw) 40px; display: flex; flex-direction: column; gap: 18px; }
h1 { font-size: 40px; margin: 0; } h2 { font-family: var(--ui); font-size: 14px; text-transform: uppercase; letter-spacing: 1.5px;
     color: var(--muted); margin: 18px 0 0; } h3 { margin: 0 0 8px; font-size: 20px; }
.lead { font-size: 19px; margin: 6px 0 14px; max-width: 65ch; }
.search { display: flex; gap: 8px; flex-wrap: wrap; }
.search input { flex: 1 1 280px; font: 18px var(--ui); padding: 12px 14px; border: 2px solid var(--line); border-radius: 8px;
                background: var(--panel); color: var(--fg); min-height: 50px; }
.search input:focus { outline: 3px solid var(--accent); border-color: var(--accent); }
button { font: 700 17px var(--ui); background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px;
         padding: 0 22px; min-height: 50px; cursor: pointer; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.note { font-family: var(--ui); font-size: 14px; color: var(--warn); }
.topics { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 14px; }
.topic { background: var(--panel); border: 1px solid var(--line); border-top: 4px solid var(--accent); border-radius: 6px; padding: 14px 16px; min-width: 0; }
.pdfs { list-style: none; padding: 0; margin: 0 0 10px; display: flex; flex-direction: column; gap: 8px; }
a { color: var(--accent); }
.chip { display: inline-block; font: 13px var(--ui); background: var(--chip); color: var(--fg); text-decoration: none;
        border-radius: 99px; padding: 3px 10px; margin: 3px 4px 0 0; }
.muted { color: var(--muted); } .small { font-size: 14px; }
.table { overflow-x: auto; } table { width: 100%; border-collapse: collapse; font-family: var(--ui); font-size: 15px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.caution { border-left: 4px solid var(--warn); padding: 4px 16px; } .caution h2 { margin-top: 0; }
footer { text-align: center; font: 13px var(--ui); color: var(--muted); padding: 20px; }
.changelog h2 { text-transform: none; letter-spacing: 0; font-size: 18px; color: var(--fg); }