:root{--paper:#fbfbf9;--surface:#fff;--ink:#121212;--ink-2:#3f4247;--muted:#74787f;--line:#e2e3e0;--line-strong:#bdbfba;--accent:#0f2a52;--accent-2:#1a56db;--red:#d52b1e;--font:Inter,system-ui,-apple-system,'Segoe UI',sans-serif;--serif:Lora,'Palatino Linotype',Palatino,Georgia,serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:inherit}img{max-width:100%;height:auto;display:block}
.wrap{width:min(1180px,100% - 48px);margin-inline:auto}
header{position:sticky;top:0;z-index:5;background:rgba(251,251,249,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:12px 0;position:relative}
.brand{display:inline-flex;align-items:center;text-decoration:none}.brand img{height:66px;width:auto;display:block}
.links{display:flex;gap:26px;align-items:center;font-size:14px;font-weight:500}
.links a{text-decoration:none;color:var(--ink-2);white-space:nowrap}.links a:hover,.links a[aria-current="page"]{color:var(--ink)}.links a[aria-current="page"]:not(.btn){text-decoration:underline;text-underline-offset:6px}
.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--ink);padding:11px 18px;text-decoration:none;font-weight:600;font-size:14px;color:var(--ink);background:transparent;transition:background .15s,color .15s}
.btn:hover{background:var(--ink);color:#fff}
.btn.dark{background:var(--ink);color:#fff}.btn.dark:hover{background:var(--accent-2);border-color:var(--accent-2)}
.btn.blue{background:var(--accent-2);border-color:var(--accent-2);color:#fff}.btn.blue:hover{background:#1649b9}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;font-weight:600;color:var(--ink-2);margin-bottom:14px}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--ink)}
h1,h2,h3{font-family:var(--serif);font-weight:600;margin:0;letter-spacing:-.01em;text-wrap:balance}
h1{font-size:clamp(38px,5vw,64px);line-height:1.06}h2{font-size:clamp(28px,3.2vw,42px);line-height:1.15}h3{font-size:21px;line-height:1.3}
p{margin:0}.lead{font-size:18px;color:var(--ink-2);max-width:60ch}
/* hero : photo du Cervin en plein cadre, fondue dans le bleu nuit sur la gauche et le bas */
.hero{position:relative;min-height:92vh;display:grid;align-items:center;overflow:hidden;background:#0b1f3f;color:#fff}
.hero .bg{position:absolute;inset:0;z-index:0}
.hero .bg img{width:100%;height:100%;object-fit:cover;object-position:64% 48%;-webkit-mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.25) 22%,rgba(0,0,0,.9) 52%,#000 70%);mask-image:linear-gradient(90deg,transparent 0%,rgba(0,0,0,.25) 22%,rgba(0,0,0,.9) 52%,#000 70%)}
.hero .bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,31,63,.55) 0%,rgba(11,31,63,0) 30%,rgba(11,31,63,0) 55%,#0b1f3f 100%),linear-gradient(90deg,#0b1f3f 0%,rgba(11,31,63,.9) 22%,rgba(11,31,63,.35) 45%,rgba(11,31,63,0) 65%)}
.hero .txt{position:relative;z-index:2;padding:110px 0 120px}
.hero .txt .wrap{width:min(600px,100% - 48px);margin:0 0 0 max(24px,calc((100vw - 1180px)/2))}
.hero .eyebrow{color:#fff}.hero .eyebrow::before{background:#fff}
.hero p{color:rgba(255,255,255,.86);font-size:17px;max-width:50ch;margin-top:22px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:34px}
.hero .btn{border-color:rgba(255,255,255,.8);color:#fff}.hero .btn:hover{background:#fff;color:var(--ink)}
.hero .fleur{position:absolute;right:-4%;bottom:-16%;width:min(40vw,520px);height:auto;opacity:.11;z-index:1;pointer-events:none}
.hero .caption{position:absolute;right:28px;top:22px;z-index:2;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.5)}
.pillars{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:var(--surface);margin-top:-56px;position:relative;z-index:3;box-shadow:0 20px 50px -30px rgba(11,31,63,.5)}
.pillars div{padding:26px 24px;border-right:1px solid var(--line)}.pillars div:last-child{border-right:0}
.pillars b{display:block;font-family:var(--serif);font-size:24px;font-weight:500;margin-bottom:6px}.pillars span{font-size:14px;color:var(--ink-2)}
section{padding-block:96px}
.band{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
/* activités */
.acts{display:grid;grid-template-columns:repeat(2,1fr);gap:0;border:1px solid var(--line);background:var(--surface);margin-top:40px}
.act{padding:36px 34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:52px 1fr;gap:18px;align-content:start}
.act:nth-child(2n){border-right:0}.act:last-child{border-bottom:0;border-right:0;grid-column:1/-1}.act:nth-last-child(2){border-bottom:1px solid var(--line)}
.act .n{font-family:var(--serif);font-size:34px;line-height:1;color:var(--line-strong)}
.act h3{margin-bottom:10px}.act p{color:var(--ink-2);font-size:15px}
.act ul{margin:12px 0 0;padding-left:18px;color:var(--ink-2);font-size:14.5px}.act li{margin:4px 0}
.act .ref{display:block;margin-top:12px;font-size:12px;color:var(--muted)}
/* ledger */
.ledger{background:var(--accent);color:#fff}
.ledger .two{gap:72px}
.ledger h2,.ledger .eyebrow{color:#fff}.ledger .eyebrow::before{background:#fff}
.ledger p{color:rgba(255,255,255,.85)}
.ledger .mock{background:#fff;color:var(--ink);border:1px solid rgba(255,255,255,.3);padding:0;font-family:var(--font);font-size:13px}
.mock .top{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--line);font-weight:600}
.mock .top i{display:inline-grid;place-items:center;width:26px;height:26px;background:var(--accent-2);color:#fff;font-style:normal;font-size:11px;font-weight:700}
.mock .rows{display:grid;grid-template-columns:1fr auto auto auto;gap:0}
.mock .rows span{padding:9px 14px;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}
.mock .rows .h{font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:#f3f4f2}
.mock .rows .t{font-weight:600;border-top:1px solid var(--ink)}
.mock .pos{color:#157a2e}.mock .neg{color:#b42318}
.ledger .marks{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.ledger .marks span{font-size:12.5px;border:1px solid rgba(255,255,255,.35);padding:6px 10px}
.ledger .btn{margin-top:30px}
/* qualités */
.quals{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin-top:40px;border-top:1px solid var(--ink)}
.quals div{padding:24px 18px 0 0;border-top:1px solid transparent}
.quals b{display:block;font-family:var(--serif);font-size:26px;font-weight:500;margin-bottom:8px}.quals span{font-size:14px;color:var(--ink-2)}
.quals small{display:block;font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}
/* à propos */
.about .two{grid-template-columns:minmax(0,440px) 1fr;gap:72px}.about .pic{position:relative;max-width:440px}.about img{aspect-ratio:1/1;object-fit:cover;object-position:50% 35%;width:100%;-webkit-mask-image:linear-gradient(180deg,#000 72%,rgba(0,0,0,.3) 100%);mask-image:linear-gradient(180deg,#000 72%,rgba(0,0,0,.3) 100%)}
.about .badge{position:absolute;right:-28px;bottom:-28px;width:120px;height:120px;background:#fff;border:1px solid var(--line);padding:14px}.about .badge svg{width:100%;height:100%}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:18px 32px;margin-top:28px;font-size:14.5px}
.facts b{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}
/* contact */
.contact{background:var(--surface);border-top:1px solid var(--line)}
.contact h2,.contact .eyebrow{color:var(--ink)}
.contact .grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:40px;margin-top:40px}
.contact a{color:var(--ink)}.contact .l{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.contact p{color:var(--ink-2)}
.swiss{display:inline-flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.14em;text-transform:uppercase;font-weight:600}
.swiss i{display:inline-grid;place-items:center;width:16px;height:16px;background:var(--red)}.swiss i::before{content:"";width:10px;height:10px;background:conic-gradient(from 0deg,transparent 0 25%,#fff 0 50%,transparent 0 75%,#fff 0)}
.foot{background:#071634;color:#fff;padding:64px 0 0;font-size:14px}
.foot .cols{display:grid;grid-template-columns:1.5fr 1fr 1.1fr 1fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.14)}
.foot .col{display:grid;gap:10px;align-content:start}.foot .col a{color:rgba(255,255,255,.82);text-decoration:none}.foot .col a:hover{color:#fff;text-decoration:underline}
.foot h4{margin:0 0 6px;font-family:var(--serif);font-weight:600;font-size:17px;color:#fff}
.foot p{color:rgba(255,255,255,.72);line-height:1.6;margin:0}
.foot .flogo{height:46px;width:auto;margin-bottom:6px}
.foot .brandcol .swiss{color:#fff;margin-top:6px}
.foot .btn.light{border-color:rgba(255,255,255,.7);color:#fff;justify-self:start;margin-top:4px}.foot .btn.light:hover{background:#fff;color:var(--ink)}
.foot .bar{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:20px 0 26px;font-size:12.5px;color:rgba(255,255,255,.55)}
@media (max-width:980px){.hero{min-height:auto}.hero .bg img{object-position:58% 38%;-webkit-mask-image:linear-gradient(180deg,#000 0%,#000 46%,rgba(0,0,0,.35) 74%,transparent 100%);mask-image:linear-gradient(180deg,#000 0%,#000 46%,rgba(0,0,0,.35) 74%,transparent 100%)}.hero .bg::after{background:linear-gradient(180deg,rgba(11,31,63,.08) 0%,rgba(11,31,63,.12) 40%,#0b1f3f 78%)}.hero .txt{padding:min(26vh,220px) 0 56px}.hero .txt .wrap{margin-inline:24px}.hero .fleur{display:none}.foot .cols{grid-template-columns:1fr 1fr}.pillars{grid-template-columns:1fr 1fr}.pillars div:nth-child(2){border-right:0}.two,.ledger .two,.contact .grid{grid-template-columns:1fr}.acts{grid-template-columns:1fr}.act{border-right:0}.act:nth-last-child(2){border-bottom:1px solid var(--line)}.quals{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.foot .cols{grid-template-columns:1fr}.pillars{margin-top:0}}

/* accessibilité, menu mobile */
.skip{position:absolute;left:-999px;top:0;background:#fff;color:var(--ink);padding:8px 12px;z-index:50}.skip:focus{left:12px;top:12px}
.menu-toggle{display:none}.burger{display:none;width:44px;height:44px;border:1px solid var(--line-strong);background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}.burger span{display:block;width:20px;height:2px;background:var(--ink)}
/* pages intérieures */
.page-hero{position:relative;background:var(--accent);color:#fff;padding:72px 0 64px;overflow:hidden}.page-hero.small{padding:48px 0 40px}
.page-hero h1{color:#fff}.page-hero .lead{color:rgba(255,255,255,.86);max-width:70ch}.page-hero .eyebrow{color:#fff}.page-hero .eyebrow::before{background:#fff}
.page-hero .fleur{position:absolute;right:-6%;top:-30%;width:min(40vw,480px);opacity:.12;pointer-events:none}
.crumbs{display:flex;gap:10px;font-size:13px;color:rgba(255,255,255,.7);margin-bottom:22px;flex-wrap:wrap}.crumbs a{color:rgba(255,255,255,.85);text-decoration:none}.crumbs a:hover{text-decoration:underline}
.blocks{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--line);background:var(--surface)}
.block{padding:36px 34px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.block:nth-child(2n){border-right:0}.block:nth-last-child(-n+2){border-bottom:0}.block:last-child:nth-child(odd){grid-column:1/-1;border-right:0;border-bottom:0}
.block h2{font-size:22px;margin-bottom:12px}.block p{color:var(--ink-2);font-size:15.5px}.block ul{margin:14px 0 0;padding-left:18px;color:var(--ink-2);font-size:14.5px}.block li{margin:5px 0}
.faq{margin-top:30px;border-top:1px solid var(--ink)}.faq details{border-bottom:1px solid var(--line);padding:4px 0}.faq summary{cursor:pointer;padding:16px 0;font-family:var(--serif);font-weight:600;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:16px}.faq summary::after{content:"+";color:var(--muted);font-family:var(--font)}.faq details[open] summary::after{content:"−"}.faq p{color:var(--ink-2);padding:0 0 18px;max-width:72ch}
.cta-band{background:var(--surface);border-top:1px solid var(--line)}.cta-box{display:grid;gap:10px;justify-items:start;padding:30px;border:1px solid var(--line);background:var(--paper)}.cta-box .l{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.cta-box a{color:var(--ink);text-decoration:none}.cta-box a.big{font-family:var(--serif);font-size:24px;font-weight:600}.cta-box .btn{margin-top:8px}
.act h3 a{text-decoration:none;color:inherit}.act h3 a:hover{text-decoration:underline}.act .more{display:inline-block;margin-top:14px;font-weight:600;font-size:14px;color:var(--accent-2);text-decoration:none}.act .more:hover{text-decoration:underline}
.wrap.narrow{max-width:800px}.wrap.narrow h2{font-size:22px;margin:28px 0 8px}.wrap.narrow p{color:var(--ink-2)}
address{font-style:normal}
@media (max-width:980px){
  .brand img{height:54px}.about .two{grid-template-columns:1fr}.about .pic{max-width:360px}
  .nav{position:static}.burger{display:flex}
  .links{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:0;padding:8px 0 14px;box-shadow:0 20px 40px -24px rgba(11,31,63,.4)}
  .links a{padding:12px 24px;font-size:16px}.links .btn{margin:10px 24px 0;justify-content:center}
  .menu-toggle:checked ~ .links{display:flex}
  .links a:not(.btn){display:block}
  .blocks{grid-template-columns:1fr}.block{border-right:0}.block:nth-last-child(2){border-bottom:1px solid var(--line)}
  .page-hero{padding:48px 0 44px}
}
@media (max-width:640px){.brand img{height:46px}.hero .txt .wrap{width:calc(100% - 40px);margin-inline:20px}}