:root{--paper:#faf6ef;--ink:#23201b;--muted:#6f685c;--rule:#e2d9c9;--accent:#9a3b26;--measure:34rem}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Georgia,"Iowan Old Style","Palatino Linotype",Palatino,serif;font-size:1.18rem;line-height:1.66;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--measure);margin:0 auto;padding:2.4rem 1.3rem 4rem}
.tagline{font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 1.6rem}
nav.top{font-size:.95rem;margin-bottom:2.6rem;display:flex;gap:1.1rem;flex-wrap:wrap}
a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(154,59,38,.28)}
a:hover{border-bottom-color:var(--accent)}
nav.top a{color:var(--muted);border:0}nav.top a:hover{color:var(--ink)}
.issue-meta{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:.6rem}
h1{font-size:2.35rem;line-height:1.12;letter-spacing:-.01em;margin:.2rem 0 1.3rem;font-weight:600}
h1.site{font-size:2rem;margin:.2rem 0 1.1rem}
h1.site a{border:0;color:var(--ink)}
.dek{font-size:1.32rem;line-height:1.5;color:#3a352d;font-style:italic;margin:0 0 2.1rem;padding-bottom:1.6rem;border-bottom:1px solid var(--rule)}
p{margin:0 0 1.25rem}
.divider{text-align:center;color:var(--accent);font-size:1.7rem;margin:2.8rem 0 2rem;opacity:.8}
.watching{background:#f3ecdf;border:1px solid var(--rule);border-radius:10px;padding:1.4rem 1.5rem;margin:0 0 2.6rem}
.watching h2{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 .7rem;font-weight:600}
.watching p{margin:0;font-size:1.1rem}
.endnav{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.92rem;color:var(--muted);margin:2.4rem 0 1.4rem}
.endnav .count{color:var(--muted)}
.subscribe{border-top:1px solid var(--rule);padding-top:1.6rem;font-size:1.02rem;color:#3a352d}
.subscribe>strong{display:block;color:var(--ink);font-size:1.12rem;margin-bottom:.25rem}
.subscribe-form{margin:1rem 0 .65rem;padding:1rem;border:1px solid var(--rule);border-radius:10px;background:#f3ecdf}
.subscribe-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.65rem}
.subscribe-label{display:block;font-size:.88rem;color:var(--muted);margin:0 0 .35rem}
.subscribe-form input[type=email]{width:100%;min-width:0;padding:.7rem .8rem;border:1px solid var(--rule);border-radius:7px;background:var(--paper);color:var(--ink);font:inherit;font-size:1rem}
.subscribe-form input[type=email]:focus{outline:3px solid rgba(154,59,38,.22);border-color:var(--accent)}
.subscribe-form button{align-self:end;padding:.72rem 1rem;border:0;border-radius:7px;background:var(--accent);color:#fff;font:inherit;font-size:.95rem;font-weight:600;cursor:pointer}
.subscribe-form button:hover{opacity:.88}.subscribe-form button:disabled{cursor:wait;opacity:.65}
.subscribe-consent{display:flex;align-items:flex-start;gap:.55rem;margin:.7rem 0 0;color:var(--muted);font-size:.84rem;line-height:1.45}
.subscribe-consent input{margin-top:.25rem;accent-color:var(--accent)}
.subscribe-status{min-height:1.35rem;margin:.55rem 0 0;font-size:.86rem;color:var(--muted)}
.subscribe-status.error{color:var(--accent)}.subscribe-status.success{color:#42704d}
.subscribe-note{margin:.45rem 0 0;color:var(--muted);font-size:.9rem}
.subscribe-hp{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important;overflow:hidden!important}
footer{border-top:1px solid var(--rule);margin-top:2.6rem;padding-top:1.4rem;font-size:.85rem;color:var(--muted);line-height:1.6}
.issue-list{list-style:none;padding:0;margin:2rem 0 0}
.issue-list li{margin:0 0 2.1rem;padding:0 0 1.9rem;border-bottom:1px solid var(--rule)}
.issue-list h2{font-size:1.5rem;line-height:1.2;margin:.15rem 0 .5rem;font-weight:600}
.issue-list h2 a{color:var(--ink);border:0}
.issue-list h2 a:hover{color:var(--accent)}
.issue-list .blurb{margin:0;color:#46413a;font-size:1.06rem}
/* Homepage archive filter — added 2026-07-13 (No. 31): the first client-side search,
   deferred by every growth run since Run No. 18 as "still under the 30+ bar" until the
   archive crossed it (now 31 issues). No-JS-safe: the box carries inline display:none
   and is revealed only by the inline enhancement script, since the full reverse-chron
   list is already present for no-JS readers to browse or Ctrl-F. Filters the existing
   homepage <li>s in place against each one's data-search string (title + blurb + topic
   tags), so a reader can type "kidney", "ozone", "firefly". No new page, no fetch, no
   dependency, no stored state. Input reuses the themed CSS variables, so dark mode is
   automatic; hidden in print (it's chrome, not content). */
.sw-search{margin:1.8rem 0 0}
.sw-search label{display:block;font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:0 0 .5rem;font-weight:600}
.sw-search input{font:inherit;font-size:1.05rem;width:100%;box-sizing:border-box;padding:.6rem .8rem;color:var(--ink);background:var(--paper);border:1px solid var(--rule);border-radius:8px}
.sw-search input:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-color:var(--accent)}
.sw-count{font-size:.9rem;color:var(--muted);margin:.6rem 0 0;min-height:1.2em}
.intro{font-size:1.12rem;color:#3a352d}
.starthere{font-size:1rem;color:var(--muted);margin:.3rem 0 0}
.related{border-top:1px solid var(--rule);margin-top:2.2rem;padding-top:1.3rem}
.related.exhibit{margin-top:1.4rem}
.related h2{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 .9rem;font-weight:600}
.related ul{list-style:none;padding:0;margin:0}
.related li{margin:0 0 .8rem;line-height:1.4}
.related li a{font-size:1.06rem;border:0;color:var(--ink)}
.related li a:hover{color:var(--accent)}
.related .why{display:block;font-size:.92rem;color:var(--muted);border:0}
/* "Further reading" — a small curated bibliography per issue (see SOURCES in build.py).
   Added 2026-07-09 (No. 24). Styled like .related (same quiet, uppercase-label
   convention) but kept OUT of the print stylesheet's hidden-chrome list on purpose —
   unlike nav/subscribe/related, a source list is real editorial/citation content, the
   same reasoning that already keeps the "one loop I'm watching" teaser visible on paper. */
.sources{border-top:1px solid var(--rule);margin-top:1.6rem;padding-top:1.2rem}
.sources h2{font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:0 0 .8rem;font-weight:600}
.sources ul{list-style:none;padding:0;margin:0}
.sources li{margin:0 0 .55rem;line-height:1.4;font-size:.98rem;color:#3a352d}
.sources li a{color:var(--ink)}
.sources li a:hover{color:var(--accent)}
/* Skip-to-content link (keyboard/screen-reader accessibility) — invisible until it
   receives keyboard focus, at which point it's the very first stop in the tab order
   on every page, letting a keyboard or screen-reader reader jump straight past the
   repeated top nav to the actual issue text. Paired with an explicit focus-visible
   outline below, since the browser default outline can be easy to lose against the
   paper background. Added 2026-07-06 (No. 19) — the first accessibility-specific
   growth feature after several rounds of crawler/AI-agent/reader-onboarding work. */
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;
  padding:.7rem 1.1rem;z-index:100;border-radius:0 0 8px 0;font-size:.95rem;border:0}
.skip-link:focus{left:0}
a:focus-visible,.skip-link:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
@media (max-width:480px){body{font-size:1.1rem}h1{font-size:1.95rem}.dek{font-size:1.18rem}.subscribe-row{grid-template-columns:1fr}.subscribe-form button{width:100%}}
/* Keyboard-nav discoverability hint — added 2026-07-07 (No. 21), paired with the
   inline keydown-listener script in issue_html(). Quiet by design: same muted
   tone as the byline, not a call-to-action. */
.kbdhint{color:var(--muted);font-size:.85rem;margin:.35rem 0 1.5rem}
/* "Share this issue" control — added 2026-07-08 (No. 22). No-JS-safe default is a
   plain, selectable URL (works via copy-paste with zero JavaScript); progressively
   enhanced into a real button that calls the native Web Share sheet on devices that
   support it, or copies the link to the clipboard with a short text confirmation
   otherwise. First reader-facing feature aimed at lowering the friction of passing a
   single issue on, distinct from the author-run distribution kits. */
.share{border-top:1px solid var(--rule);padding-top:1.4rem;margin:0 0 1.6rem;font-size:1rem;color:var(--muted)}
.share code{font-size:.92rem;word-break:break-all;color:var(--ink)}
.share-btn{font:inherit;font-size:.98rem;background:var(--accent);color:#fff;border:0;border-radius:7px;padding:.55rem 1.05rem;cursor:pointer}
.share-btn:hover{opacity:.88}
.share-btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
/* "Read a random issue" — added 2026-07-08 (No. 23), sitewide (issue pages, home,
   /start). The print stylesheet has hidden a #read-random selector since it was
   written (No. 20) but nothing ever used that id — this was the 404 page's own
   "read a random issue" trick (see not_found_html()), rolled out everywhere else
   too, so the archive gets a genuine shuffle-discovery path beyond the reverse-chron
   home page and the three curated /start picks. No-JS-safe default points at
   /start; the inline script (identical pattern to the 404 page's) rewrites it to a
   real random issue, excluding the issue the reader is already on. */
.randlink{font-size:1rem;color:var(--muted);margin:.3rem 0 0}
/* Automatic dark mode, keyed off the reader's OS/browser preference (no toggle,
   no JS, no stored state — see the paired theme-color <meta> tags in head()).
   Re-themes the CSS custom properties in :root, then overrides the handful of
   rules below that predate the variable system and still hardcode a literal
   hex value instead of var(--ink)/var(--muted). Added 2026-07-05 (No. 17). */
@media (prefers-color-scheme:dark){
:root{--paper:#1c1a17;--ink:#e9e2d3;--muted:#a89e8d;--rule:#3a352c;--accent:#e0906f}
.watching{background:#26221d}
.dek,.intro,.subscribe,.sources li{color:#d9d0c0}
.issue-list .blurb{color:#cfc6b4}
.subscribe-form{background:#26221d}.subscribe-status.success{color:#8fcf9c}
}
/* Print stylesheet — added 2026-07-07 (No. 20). Reading an issue on paper (or
   "Print to PDF") had never been considered: without this, a printed page carried
   full site chrome (nav, subscribe box, related-issues links, footer nav — none of
   it useful once ink is on paper), plus dark mode's near-black background if the
   reader's OS was set to dark, which most browsers still try to honor when printing
   and which wastes toner/ink for no reason. This forces light paper + dark ink
   regardless of color-scheme preference, drops every purely-navigational element,
   and leaves only the masthead, title, byline, and the issue's own text — including
   the "one loop I'm watching" teaser, which is real editorial content, not chrome. */
@media print{
  :root{--paper:#fff;--ink:#111;--muted:#444;--rule:#ccc;--accent:#000}
  .skip-link,nav.top,.subscribe,.related,footer,#read-random,.kbdhint,.share,.sw-search{display:none!important}
  body{background:#fff;color:#111}
  a{color:#111;text-decoration:underline}
  .wrap{max-width:100%;padding:0 .25in}
  h1,.dek{page-break-after:avoid}
  .watching{background:#fff;border:1px solid #ccc}
  body::after{content:"The Standing Wave · standingwave.ink";display:block;
    text-align:center;margin-top:2rem;font-size:.75rem;color:#666}
}