/* ==========================================================================
   QMC4 Field Notes — shared stylesheet for article pages
   Palette, typography, header and footer mirror the main QMC4 site.
   Deep-navy canvas, cyan (#34EDF3) links, cerise (#F715AB) accents.
   ========================================================================== */

:root{
  --ink:#070F34; --ink-2:#0A1240; --surface:#0E1548; --surface-2:#091038;
  --line:rgba(150,175,255,.14); --hair:rgba(150,175,255,.24);
  --text:#EAEEFF; --muted:#9FB0E0; --muted-2:#8090C4;
  --red:#F715AB; --red-deep:#A80E88; --red-tint:rgba(247,21,171,.15); --accent-600:#FB55BF;
  --signal:#34EDF3; --signal-tint:rgba(52,237,243,.14);
  --zaffre:#0313A6; --violet:#9201CB; --violet-tint:rgba(146,1,203,.22); --zaffre-tint:rgba(3,19,166,.24);
  --paper:#EEF0FA; --paper-2:#DFE3F4; --paper-ink:#0B1233; --paper-muted:#4C5578; --paper-line:rgba(11,18,51,.16);
  --maxw:1220px;
  --display:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"Space Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ---- Base ---- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{
  margin:0;background:var(--ink);color:var(--text);font-family:var(--sans);
  font-size:16.5px;line-height:1.6;letter-spacing:-.005em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
h1,h2,h3{font-family:var(--display);font-weight:500;line-height:1.04;letter-spacing:-.015em;margin:0}
p{margin:0 0 1.1rem}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
::selection{background:var(--red);color:var(--ink)}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.skip{position:absolute;left:-999px;top:0;z-index:200;background:var(--red);color:var(--ink);padding:12px 18px;font-family:var(--mono);font-size:.8rem}
.skip:focus{left:0}

/* ---- Header ---- */
header.site{position:sticky;top:0;z-index:100;background:rgba(11,12,15,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:82px;gap:20px}
.brand{display:flex;align-items:center;gap:13px;font-family:var(--mono);font-weight:700;letter-spacing:.06em;font-size:1.35rem;color:var(--text)}
.brandmark{width:54px;height:54px;flex:none}
footer .brandmark{width:58px;height:58px}
.bm-ring{fill:none;stroke:var(--signal);stroke-linecap:butt;stroke-linejoin:round}
.bm-bar{fill:var(--red);stroke:none}
.bm-tail{fill:var(--signal)}
.sup4{font-size:.58em;vertical-align:.42em;font-weight:700;color:var(--red);margin-left:.02em}
.navlinks{display:flex;gap:30px;align-items:center;flex-wrap:wrap}
.navlinks a{font-family:var(--mono);font-size:.78rem;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);transition:color .15s ease}
.navlinks a:hover{color:var(--text)}
.nav-cta{font-family:var(--mono);font-size:.76rem;letter-spacing:.05em;text-transform:uppercase;font-weight:700;color:var(--ink);background:var(--red);padding:11px 18px;transition:background .15s ease}
.nav-cta:hover{background:var(--accent-600);color:var(--ink)}
.menu-btn{display:none}

/* ---- Article ---- */
.article{padding:clamp(40px,7vw,88px) 0 clamp(56px,9vw,120px)}
.article-inner{max-width:68ch;margin:0 auto;padding:0 28px}

.backlink{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:34px;transition:color .15s ease}
.backlink:hover{color:var(--signal)}

.kicker{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 22px}
.kicker .cat{color:var(--red)}
.kicker .sep{color:var(--hair)}

.article h1{font-size:clamp(2rem,5.2vw,3.15rem);line-height:1.05;letter-spacing:-.02em;margin:0 0 36px;max-width:20ch}

/* ---- Prose ---- */
.prose{font-size:1.15rem;line-height:1.7;color:var(--text)}
.prose>p:first-of-type{font-size:1.24rem;line-height:1.6;color:var(--text)}
.prose p{margin:0 0 1.25rem;color:var(--text)}
.prose h2{font-family:var(--display);font-weight:500;font-size:1.7rem;line-height:1.12;letter-spacing:-.015em;margin:2.6rem 0 1rem}
.prose h3{font-family:var(--display);font-weight:500;font-size:1.32rem;line-height:1.18;letter-spacing:-.01em;margin:2rem 0 .8rem}
.prose h4{font-family:var(--mono);font-weight:700;font-size:.82rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:1.8rem 0 .7rem}
.prose a{color:var(--signal);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px;transition:color .15s ease}
.prose a:hover{color:var(--text)}
.prose strong{color:#fff;font-weight:700}
.prose em{font-style:italic}
.prose ul,.prose ol{margin:0 0 1.35rem;padding-left:1.4rem}
.prose li{margin:0 0 .55rem;padding-left:.3rem}
.prose li::marker{color:var(--signal)}
.prose ol li::marker{color:var(--red);font-family:var(--mono);font-size:.9em}
.prose blockquote{margin:1.8rem 0;padding:.4rem 0 .4rem 1.4rem;border-left:3px solid var(--red);color:var(--muted);font-family:var(--display);font-style:italic;font-size:1.22rem;line-height:1.5}
.prose blockquote p{color:var(--muted)}
.prose code{font-family:var(--mono);font-size:.86em;background:var(--signal-tint);color:var(--signal);padding:.12em .38em;border-radius:3px;word-break:break-word}
.prose hr{height:1px;background:var(--line);border:0;margin:2.6rem 0}

/* ---- Closing CTA ---- */
.article-cta{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--line)}
.cta-btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;font-weight:700;color:var(--ink);background:var(--signal);padding:14px 22px;transition:background .15s ease}
.cta-btn:hover{background:#7bf4f8;color:var(--ink)}

/* ---- Footer ---- */
footer.site{background:var(--surface-2);border-top:1px solid var(--line);padding:64px 0 30px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:34px}
.foot-brand .brand{margin-bottom:2px}
.tagline{font-family:var(--display);font-style:italic;font-size:1.05rem;color:var(--text);margin-top:8px}
.foot-brand p{max-width:36ch;font-size:.92rem;color:var(--muted);margin-top:16px}
footer h4{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);font-weight:400;margin:0 0 18px}
footer.site ul{list-style:none;margin:0;padding:0}
footer.site li{margin:0 0 12px;font-size:.92rem}
footer.site .foot-grid a{color:var(--muted);transition:color .15s ease}
footer.site .foot-grid a:hover{color:var(--signal)}
.foot-legal{margin-top:44px;padding-top:22px;border-top:1px solid var(--line);font-family:var(--mono);font-size:.72rem;line-height:1.7;letter-spacing:.03em;color:var(--muted-2);max-width:80ch}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-top:16px;font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;color:var(--muted-2)}

/* ---- Responsive ---- */
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.wrap,.article-inner{padding:0 20px}.navlinks{gap:16px}}
@media(max-width:480px){.foot-grid{grid-template-columns:1fr}.navlinks .nav-cta{display:none}}