/* Belvurtonei — feuille de style commune */

:root{
  --ivory:#F6F0E6;
  --honey:#EADCC6;
  --chestnut:#4A2B1B;
  --ink:#2C1F15;
  --muted:#7C6A55;
  --amber:#C87F2E;
  --navy:#2A3F63;
  --maxw:1120px;
  --gut:24px;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--ivory);
  color:var(--ink);
  font-family:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

h1,h2,h3{
  font-family:Georgia,'Times New Roman',serif;
  font-weight:400;
  color:var(--ink);
}

h1{
  font-size:clamp(2.1rem,5.2vw,3.4rem);
  line-height:1.12;
  letter-spacing:-0.01em;
  margin:0 0 28px;
}

h2{
  font-size:clamp(1.5rem,2.7vw,2rem);
  line-height:1.25;
  margin:0 0 18px;
}

h3{
  font-style:italic;
  font-size:1.18rem;
  line-height:1.35;
  margin:32px 0 12px;
}

p{margin:0 0 20px;}

a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--amber);text-underline-offset:3px;}
a:hover{color:var(--amber);}
a:focus-visible,
button:focus-visible{outline:2px solid var(--amber);outline-offset:3px;}

img{max-width:100%;height:auto;display:block;}

/* ---------- grille ---------- */

.wrap{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 var(--gut);
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:0 28px;
}

.col-center-6{grid-column:4 / span 6;}
.col-center-8{grid-column:3 / span 8;}
.col-center-5{grid-column:4 / span 5;}
.col-left-7{grid-column:1 / span 7;}
.col-l4{grid-column:2 / span 3;}
.col-r4{grid-column:9 / span 3;}
.pair-l{grid-column:1 / span 4;}
.pair-r{grid-column:9 / span 4;}

/* ---------- axe vertical ---------- */

.axis{position:relative;}
.axis::before{
  content:"";
  position:absolute;
  top:0;bottom:0;left:50%;
  width:1px;
  background:linear-gradient(180deg,rgba(200,127,46,0) 0%,var(--amber) 12%,var(--amber) 88%,rgba(200,127,46,0) 100%);
  opacity:.55;
}

/* ---------- en-tête / navigation ---------- */

.site-header{
  background:var(--ivory);
  border-bottom:1px solid rgba(124,106,85,.25);
  padding:20px 0;
}

.site-header .wrap{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:center;
  gap:10px 26px;
  text-align:center;
}

.brand{
  font-family:Georgia,'Times New Roman',serif;
  font-size:1.32rem;
  letter-spacing:.06em;
  text-decoration:none;
  color:var(--ink);
  width:100%;
}

.site-nav ul{
  list-style:none;
  margin:0;padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:6px 22px;
}

.site-nav a{
  font-size:.94rem;
  letter-spacing:.03em;
  text-decoration:none;
  color:var(--muted);
  padding:4px 2px;
  border-bottom:1px solid transparent;
}
.site-nav a:hover,
.site-nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--amber);}

/* ---------- hero ---------- */

.hero{
  padding:72px 0 24px;
  text-align:center;
}

.hero .eyebrow{
  font-family:Georgia,'Times New Roman',serif;
  font-style:italic;
  font-size:.95rem;
  color:var(--navy);
  letter-spacing:.08em;
  margin-bottom:26px;
}

.hero h1{grid-column:2 / span 10;}
.hero .lede{grid-column:4 / span 6;color:var(--ink);font-size:1.06rem;}

.hero-pair{
  margin-top:40px;
  font-size:.92rem;
  line-height:1.7;
  color:var(--muted);
  text-align:center;
}
.hero-pair p{margin:0;}
.hero-pair .label{
  display:block;
  font-family:Georgia,'Times New Roman',serif;
  font-style:italic;
  color:var(--navy);
  margin-bottom:6px;
}

figure{margin:0;}

.hero-figure{
  margin:56px auto 0;
  max-width:680px;
  width:100%;
}
.hero-figure img{width:100%;}

figcaption{
  font-family:Georgia,'Times New Roman',serif;
  font-style:italic;
  font-size:14px;
  color:var(--amber);
  text-align:center;
  margin-top:12px;
  line-height:1.5;
}

/* ---------- rythme des sections ---------- */

.s1{padding:64px 0;}
.s2{padding:80px 0;}
.s3{padding:96px 0;}

.band-honey{background:var(--honey);}
.band-dark{background:var(--chestnut);color:var(--ivory);}
.band-dark h2,.band-dark h3{color:var(--ivory);}
.band-dark a{color:var(--ivory);text-decoration-color:var(--amber);}
.band-dark .muted{color:#D9C9B2;}

/* séparateur en arc */
.arc{
  width:33%;
  max-width:360px;
  height:26px;
  margin:0 auto;
  border-top:1px solid var(--amber);
  border-top-left-radius:200px 26px;
  border-top-right-radius:200px 26px;
  opacity:.7;
}
.arc-dark{border-top-color:var(--amber);opacity:.85;}

.sec-num{
  font-family:Georgia,'Times New Roman',serif;
  font-style:italic;
  font-size:.9rem;
  letter-spacing:.14em;
  color:var(--navy);
  margin:0 0 10px;
}
.band-dark .sec-num{color:var(--amber);}

.centered{text-align:center;}
.muted{color:var(--muted);}

/* listes ---------- */

.checklist{
  grid-column:3 / span 8;
  list-style:none;
  margin:8px 0 0;
  padding:0;
}
.checklist li{
  position:relative;
  padding-left:26px;
  margin-bottom:14px;
}
.checklist li::before{
  content:"—";
  position:absolute;
  left:0;
  color:var(--amber);
}
.checklist li strong{font-weight:600;}

.plainlist{
  list-style:none;
  margin:0;padding:0;
}
.plainlist li{
  padding-left:22px;
  position:relative;
  margin-bottom:10px;
  font-size:.95rem;
  line-height:1.65;
}
.plainlist li::before{
  content:"—";
  position:absolute;left:0;
  color:var(--amber);
}

/* image de détail ---------- */

.detail-block{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:28px;
  align-items:start;
  margin-top:40px;
}
.detail-figure{
  grid-column:2 / span 6;
  border:1px solid var(--amber);
  padding:10px;
}
.detail-note{
  grid-column:9 / span 3;
  font-size:.9rem;
  line-height:1.65;
  color:#D9C9B2;
}
.detail-note .label{
  font-family:Georgia,'Times New Roman',serif;
  font-style:italic;
  color:var(--amber);
  display:block;
  margin-bottom:8px;
}

/* paires symétriques ---------- */

.pair{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:36px 28px;
  margin-top:36px;
}
.pair > div:nth-child(odd){grid-column:1 / span 4;}
.pair > div:nth-child(even){grid-column:9 / span 4;}
.pair h3{margin-top:0;}

/* contact ---------- */

.contact-block{
  text-align:center;
  max-width:620px;
  margin:0 auto;
}
.contact-block .mail{
  font-family:Georgia,'Times New Roman',serif;
  font-size:1.25rem;
  display:inline-block;
  margin-top:6px;
}

/* pages internes ---------- */

.page-head{
  padding:64px 0 8px;
  text-align:center;
}
.page-head h1{grid-column:2 / span 10;}
.page-head .lede{grid-column:4 / span 6;color:var(--muted);}

.prose{grid-column:4 / span 6;}
.prose-wide{grid-column:3 / span 8;}

/* pied de page ---------- */

.site-footer{
  background:var(--honey);
  padding:56px 0 48px;
  text-align:center;
  margin-top:0;
}
.site-footer .fname{
  font-family:Georgia,'Times New Roman',serif;
  font-size:1.35rem;
  letter-spacing:.06em;
  margin:26px 0 18px;
}
.footer-nav{
  list-style:none;
  margin:0 0 18px;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:6px 0;
}
.footer-nav li{display:flex;align-items:center;}
.footer-nav li + li::before{
  content:"·";
  color:var(--amber);
  margin:0 14px;
}
.footer-nav a{
  text-decoration:none;
  color:var(--ink);
  font-size:.94rem;
}
.footer-nav a:hover{color:var(--amber);}
.site-footer .fmail{margin:0 0 14px;font-size:.98rem;}
.site-footer .fnote{
  margin:0 auto;
  max-width:560px;
  font-size:.86rem;
  line-height:1.6;
  color:var(--muted);
}

/* ---------- responsive ---------- */

@media (max-width:900px){
  .grid{gap:0 20px;}
  .col-center-6,.col-center-8,.col-center-5,.col-left-7,
  .hero h1,.hero .lede,.page-head h1,.page-head .lede,
  .prose,.prose-wide,.checklist{grid-column:1 / -1;}
  .pair > div:nth-child(odd),
  .pair > div:nth-child(even){grid-column:1 / -1;}
  .col-l4,.col-r4,.pair-l,.pair-r{grid-column:1 / -1;}
  .detail-figure,.detail-note{grid-column:1 / -1;}
  .detail-note{color:#D9C9B2;}
}

@media (max-width:760px){
  body{font-size:16.5px;}
  .axis::before{display:none;}
  .hero{padding:48px 0 16px;text-align:left;}
  .hero .eyebrow,.hero-pair,.hero-figure figcaption{text-align:left;}
  .hero-figure{margin-top:36px;max-width:100%;}
  .hero-pair{display:grid;gap:22px;margin-top:32px;}
  .s1{padding:44px 0;}
  .s2{padding:48px 0;}
  .s3{padding:56px 0;}
  .page-head{padding:44px 0 4px;text-align:left;}
  .arc{width:60%;}
  .centered{text-align:left;}
  .contact-block{text-align:left;}
  .detail-block{gap:20px;margin-top:28px;}
  .site-footer{padding:44px 0 40px;}
}