/* Géomagnetiseur.fr : trame du réseau de Hartmann, fond blanc, vert pour les titres et les actions, framboise pour les nœuds */
@font-face{font-family:'Instrument Serif';src:url('../fonts/instrument-serif-latin-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'Instrument Serif';src:url('../fonts/instrument-serif-latin-400-italic.woff2') format('woff2');font-weight:400;font-style:italic;font-display:swap}
@font-face{font-family:'Hanken Grotesk';src:url('../fonts/hanken-grotesk-latin-400-normal.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'Hanken Grotesk';src:url('../fonts/hanken-grotesk-latin-500-normal.woff2') format('woff2');font-weight:500;font-display:swap}
@font-face{font-family:'Hanken Grotesk';src:url('../fonts/hanken-grotesk-latin-600-normal.woff2') format('woff2');font-weight:600;font-display:swap}
@font-face{font-family:'DM Mono';src:url('../fonts/dm-mono-latin-400-normal.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:'DM Mono';src:url('../fonts/dm-mono-latin-500-normal.woff2') format('woff2');font-weight:500;font-display:swap}
:root{
  --bg:#FFFFFF; --surface:#F6F8F5; --ink:#17261F; --muted:#55645B; --line:#C5CEC4;
  --node:#A3284F; --accent:#2E5E4E; --accent-ink:#FFFFFF; --band:#DDE5DA;
  --serif:'Instrument Serif',Georgia,'Times New Roman',serif; --sans:'Hanken Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif; --mono:'DM Mono',ui-monospace,Menlo,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:clip}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 var(--sans);padding-inline:max(16px,env(safe-area-inset-left,0px)) max(16px,env(safe-area-inset-right,0px))}
a{color:inherit;text-underline-offset:3px} p{margin:0 0 1em}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.05;margin:0 0 .5em;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:clamp(2.8rem,7vw,5.2rem)} h2{font-size:clamp(1.9rem,3.8vw,2.8rem)} h3{font-size:1.6rem;line-height:1.12}
em{font-style:italic;color:var(--accent)}
img{max-width:100%;height:auto}
.wrap{max-width:1120px;margin:0 auto}
.narrow{max-width:760px}
.lab{font:500 .74rem/1.2 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin:0 0 14px}
.lab a{text-decoration:none}
.mono{font:400 .82rem/1.7 var(--mono);color:var(--muted)}
.lead{font-size:1.2rem;color:var(--muted);max-width:36em}
.meta{font:400 .85rem var(--mono);color:var(--muted)}
:focus-visible{outline:2px solid var(--node);outline-offset:3px}
.skip{position:absolute;left:-9999px;top:8px;background:var(--ink);color:#fff;padding:10px 14px;z-index:20}.skip:focus{left:8px}
#globe{position:fixed;z-index:-1;pointer-events:none;width:min(1100px,150vw);height:min(1100px,150vw);right:-22vw;top:50%;transform:translateY(-50%)}
p,.lead,h1,h2{text-shadow:0 0 8px var(--bg),0 0 3px var(--bg)}

/* boutons */
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:13px 24px;border-radius:2px;text-decoration:none;font-weight:600;font-size:.95rem;border:1px solid var(--accent);cursor:pointer;font-family:var(--sans);text-shadow:none}
.btn:hover{filter:brightness(1.12)}
.btn.line{background:var(--bg);color:var(--ink);border-color:var(--ink)}

/* en-tête */
header.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:var(--bg);border-bottom:1px solid var(--ink);margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px))}
.nav{display:flex;align-items:center;gap:12px 20px;padding-block:14px;flex-wrap:nowrap}
.brand{font:400 1.55rem var(--serif);text-decoration:none;margin:0;text-shadow:none}
.nav ul{display:flex;gap:6px 18px;list-style:none;margin:0 auto;padding:0;flex-wrap:wrap}
.nav ul a{text-decoration:none;font:500 .74rem var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);padding:6px 0;border-bottom:2px solid transparent}
.nav ul a:hover,.nav ul a[aria-current]{color:var(--ink);border-bottom-color:var(--node)}
.burger{display:none;margin-left:auto;background:var(--bg);border:1px solid var(--ink);padding:8px 14px;font:500 .78rem var(--mono);letter-spacing:.1em;text-transform:uppercase;cursor:pointer;color:var(--ink)}

/* accueil */
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;padding-block:56px 72px;align-items:center}
.hero h1{margin-top:6px}
.hero .act{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
.plate{margin:0;position:relative;width:86%;margin-left:auto}
.plate img{display:block;width:100%;aspect-ratio:4/5;object-fit:cover;object-position:50% 22%;border:1px solid var(--ink);box-shadow:0 0 0 10px var(--bg)}
.plate figcaption{font:400 .74rem var(--mono);letter-spacing:.06em;color:var(--muted);margin-top:16px;display:flex;justify-content:space-between;gap:12px}
.band{padding-block:72px;border-top:1px solid var(--ink)}
.head{display:grid;gap:4px;margin-bottom:36px;max-width:42em}
.head p:not(.lab){color:var(--muted)}
.cells{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--ink);background:var(--surface)}
.cell{position:relative;padding:30px 28px 32px;display:flex;flex-direction:column;gap:10px;min-width:0;border-right:1px solid var(--ink);text-decoration:none}
.cell:last-child{border-right:0}
.cell::before{content:"";position:absolute;left:-5px;top:-5px;width:9px;height:9px;background:var(--node);border-radius:50%}
.cell .lab{color:var(--muted);margin:0}
.cell h3{margin:0}.cell p{color:var(--muted);font-size:.98rem;margin:0}
.cell.link:hover{background:#EEF3EE}
.cell .more{margin-top:auto;padding-top:12px;color:var(--accent);font-weight:600;font-size:.92rem}
.cell .big{font:400 3.4rem/1 var(--serif)}.cell .big small{font:400 .8rem var(--mono);color:var(--muted);letter-spacing:.06em}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:56px;align-items:start}
blockquote{margin:0;font:italic 400 1.7rem/1.3 var(--serif);padding-left:22px;border-left:3px solid var(--node)}
.links{display:flex;gap:10px 28px;flex-wrap:wrap;margin-top:22px;font-weight:600}
.links a{color:var(--accent)}
.posts{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.posts a{text-decoration:none;display:flex;flex-direction:column;gap:6px;border-top:2px solid var(--ink);padding-top:14px}
.posts img{width:100%;aspect-ratio:16/10;object-fit:cover;margin-bottom:6px}
.posts .lab{margin:0;color:var(--muted)}.posts h3{margin:0}.posts a:hover h3{color:var(--accent)}
.contact-strip{display:grid;grid-template-columns:1fr 1.4fr auto;gap:40px;align-items:center;border:1px solid var(--ink);background:var(--surface);padding:34px}
.contact-strip dl,.card-info{margin:0}
.contact-strip dt{font:500 .72rem var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.contact-strip dd{margin:0 0 12px;font:400 1.5rem/1.2 var(--serif)}

/* pages de texte */
.page-head{padding-block:60px 28px}
.page-head h1{margin-bottom:.3em}
.layout{display:block;padding-bottom:48px}
.layout.with-image{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:56px;align-items:start}
.prose{max-width:44em}
.prose h2{font-size:clamp(1.6rem,3vw,2.2rem);margin-top:1.6em}
.prose h2:first-child{margin-top:0}
.prose a{color:var(--accent)}
.prose ul,.prose ol{padding-left:1.2em}
.photo{margin:0}.photo img{display:block;width:100%;border:1px solid var(--ink)}
.next{padding-block:36px 72px;border-top:1px solid var(--ink)}
.next ul{list-style:none;margin:0;padding:0;display:flex;gap:10px 32px;flex-wrap:wrap;font-weight:600}
.next a{color:var(--accent);text-decoration:none}
.note{font:400 .8rem var(--mono);color:var(--muted);margin-top:16px}

/* schémas, échelle */
.figs{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:end;margin:30px 0 40px;max-width:none;width:min(1000px,100%)}
.figs figure{margin:0;min-width:0}.fig{width:100%;height:auto;display:block;border:1px solid var(--ink);background:var(--bg)}
.figs figcaption{font:400 .76rem/1.5 var(--mono);color:var(--muted);margin-top:12px}
.prose .figs{margin-left:0}
.scale{position:relative;padding-top:20px;margin:24px 0 34px;max-width:36em}
.track{position:relative;height:56px;border-bottom:2px solid var(--ink);background:repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 5%) bottom/100% 14px no-repeat,repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 25%) bottom/100% 28px no-repeat}
.track::after{content:"";position:absolute;left:0;top:14px;height:6px;width:100%;background:linear-gradient(90deg,transparent 0 24%,var(--node) 24% 100%)}
.nums{display:flex;justify-content:space-between;font:400 .76rem var(--mono);margin-top:8px;color:var(--muted)}
.neg{position:absolute;left:0;top:0;font:500 .72rem var(--mono);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

/* FAQ */
.faq{padding-bottom:56px}
.faq details{border-top:1px solid var(--ink);padding:18px 0}
.faq details:last-child{border-bottom:1px solid var(--ink)}
.faq summary{cursor:pointer;font:400 1.5rem/1.2 var(--serif);list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 1.4rem var(--mono);color:var(--node)}
.faq details[open] summary::after{content:"–"}
.faq .prose{padding-top:12px;color:var(--muted)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:56px;padding-bottom:72px;align-items:start}
.form{display:grid;gap:8px}
.form label{font:500 .76rem var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:10px}
.form input,.form textarea{font:400 1rem var(--sans);padding:12px 14px;border:1px solid var(--ink);border-radius:0;background:var(--bg);color:var(--ink);width:100%}
.form button{justify-self:start;margin-top:14px}
.hp{position:absolute;left:-9999px}
.ok{background:#E7F1EA;border:1px solid var(--accent);padding:12px 16px}.err{background:#FBEAEE;border:1px solid var(--node);padding:12px 16px}
.card-info{border:1px solid var(--ink);background:var(--surface);padding:28px}
.card-info .lab{margin-top:18px;color:var(--muted)}.card-info .lab:first-child{margin-top:0}
.big-s{font:400 1.5rem/1.2 var(--serif);margin:0}

/* pied de page */
.site-foot{border-top:1px solid var(--ink);margin-inline:calc(-1*max(16px,env(safe-area-inset-left,0px)));padding-inline:max(16px,env(safe-area-inset-left,0px));background:var(--bg)}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;padding-block:44px 20px}
.foot-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:.95rem}
.foot-grid a{text-decoration:none}.foot-grid a:hover{text-decoration:underline}
.foot-grid .brand{font-size:1.5rem}
.copy{font:400 .76rem var(--mono);color:var(--muted);padding-bottom:30px}

@media (max-width:900px){
  .burger{display:block}
  .nav{flex-wrap:wrap}
  .nav ul{display:none;order:5;width:100%;flex-direction:column;gap:0;margin:0}
  .nav ul.open{display:flex}
  .nav ul a{display:block;padding:12px 0;border-bottom:1px solid var(--line)}
  .nav>.btn{display:none}
  .hero,.split,.contact-strip,.contact-grid,.layout.with-image,.foot-grid,.figs{grid-template-columns:1fr}
  .hero{gap:36px;padding-block:32px 48px}.plate{max-width:320px;width:80%;margin-left:0}
  .cells{grid-template-columns:1fr}.cell{border-right:0;border-bottom:1px solid var(--ink)}.cell:last-child{border-bottom:0}
  .posts{grid-template-columns:1fr}
  .band{padding-block:52px}.split,.contact-grid{gap:32px}
  #globe{right:-40vw;opacity:.85}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.prose img{display:block;max-width:100%;height:auto;margin:1.2em 0;border:1px solid var(--ink)}
.prose blockquote{margin:1.4em 0}
.btn.wa{background:#1f7a4d;border-color:#1f7a4d;color:#fff}.btn.wa:hover{background:#17623d}
.top .brand{display:inline-flex;align-items:center;gap:10px}.top .brand img{display:block;width:52px;height:52px}
.top .brand{white-space:nowrap;font-size:1.3rem;line-height:1.1;flex:none}
.nav ul{flex-wrap:nowrap;gap:6px 14px}.nav ul a{letter-spacing:.06em;font-size:.7rem;white-space:nowrap}
.nav>.btn{white-space:nowrap;padding:12px 18px;flex:none}
@media(max-width:1180px){.nav ul a{letter-spacing:.02em}.nav ul{gap:6px 10px}}
@media(max-width:900px){.nav ul{flex-wrap:wrap}}
.contact-grid.no-form{grid-template-columns:minmax(0,640px)}.lead-s{font-size:1.15rem;margin:0 0 24px}