:root{
  --navy:#14233C; --navy-2:#1B2E4D; --green:#1F7A5A; --green-l:#4CC495; --green-bg:#EAF5F0;
  --bg:#F6F7F4; --white:#fff; --text:#26303D; --muted:#667180; --line:#E3E6E1; --line-d:rgba(255,255,255,.12);
  --s1:#1B9A70; --s2:#3F5F99; /* séries des graphiques : avec onde verte / sans coordination */
  --max:1180px; --read:760px; --ease:cubic-bezier(.2,.7,.2,1);
  --mono:"IBM Plex Mono",ui-monospace,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Manrope,system-ui,sans-serif;color:var(--text);background:#fff;line-height:1.75;font-size:17.5px;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.read{max-width:var(--read);margin:0 auto;padding:0 24px}

/* header */
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:76px}
.nav img{height:40px;width:auto}
.nav ul{display:flex;gap:32px;list-style:none;align-items:center}
.nav ul a{text-decoration:none;font-size:14.5px;color:var(--navy)}
.nav ul a:hover,.nav ul a.on{color:var(--green)}
.btn{display:inline-flex;align-items:center;gap:12px;padding:12px 22px;border-radius:999px;font-weight:500;font-size:14.5px;text-decoration:none;transition:.35s var(--ease);border:1px solid transparent}
.btn-dark{background:var(--navy);color:#fff!important}
.btn-dark:hover{background:var(--green)}
.btn-fill{background:var(--green-l);color:var(--navy)!important}
.menu-btn{display:none;background:none;border:0;cursor:pointer;width:40px;height:40px;position:relative}
.menu-btn span{position:absolute;left:9px;right:9px;height:1.5px;background:var(--navy)}
.menu-btn span:nth-child(1){top:15px}.menu-btn span:nth-child(2){top:24px}

/* hero article */
.a-hero{background:var(--navy);color:#fff;padding:84px 0 72px;position:relative;overflow:hidden}
.a-hero svg.deco{position:absolute;inset:0;width:100%;height:100%;opacity:.9}
.a-hero .read{position:relative}
.kicker{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--green-l);margin-bottom:22px}
.kicker::before{content:"";width:28px;height:1px;background:currentColor}
.kicker a{text-decoration:none}
.a-hero h1{font-size:clamp(36px,5.6vw,64px);font-weight:200;letter-spacing:-.02em;line-height:1.08;color:#fff;margin-bottom:22px}
.a-hero h1 strong{font-weight:600;color:var(--green-l)}
.chapo{font-size:20px;font-weight:300;color:#c3cddb;line-height:1.6}
.meta{display:flex;gap:10px 26px;flex-wrap:wrap;margin-top:30px;font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:#8fa0b8;text-transform:uppercase}

/* corps */
article{padding:64px 0 40px}
article h2{font-size:clamp(28px,3.6vw,40px);font-weight:300;letter-spacing:-.02em;line-height:1.15;color:var(--navy);margin:72px 0 8px;scroll-margin-top:100px}
article h2 strong{font-weight:600}
.part{font-family:var(--mono);font-size:12.5px;letter-spacing:.14em;color:var(--green);text-transform:uppercase;display:block;margin-bottom:10px}
article h3{font-size:21px;font-weight:600;color:var(--navy);margin:38px 0 10px;letter-spacing:-.01em}
article p{margin:0 0 18px}
article p strong,article li strong{color:var(--navy);font-weight:600}
article ul,article ol{margin:0 0 20px 0;padding-left:0;list-style:none}
article ul li{padding-left:24px;position:relative;margin-bottom:9px}
article ul li::before{content:"";position:absolute;left:0;top:14px;width:12px;height:1.5px;background:var(--green)}
article a.lnk{color:var(--green);text-decoration:none;border-bottom:1px solid rgba(31,122,90,.35)}
.toc{border:1px solid var(--line);border-radius:18px;padding:26px 30px;margin:0 0 20px;background:var(--bg)}
.toc b{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:500;display:block;margin-bottom:12px}
.toc ol{counter-reset:t;margin:0}
.toc li{counter-increment:t;display:flex;gap:14px;padding:9px 0;border-top:1px solid var(--line);font-size:16px}
.toc li:first-child{border-top:0}
.toc li::before{content:"0" counter(t);font-family:var(--mono);font-size:12.5px;color:var(--green);padding-top:4px}
.toc a{text-decoration:none;color:var(--navy);font-weight:500}
.toc a:hover{color:var(--green)}

.keys{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:18px;overflow:hidden;margin:34px 0 10px}
.keys div{padding:22px 20px;border-right:1px solid var(--line)}
.keys div:last-child{border-right:0}
.keys b{display:block;font-size:30px;font-weight:300;color:var(--navy);letter-spacing:-.02em;line-height:1.1}
.keys span{font-size:13.5px;color:var(--muted);line-height:1.4;display:block;margin-top:6px}

figure{margin:34px 0 34px;border:1px solid var(--line);border-radius:18px;padding:26px 26px 20px;background:#fff}
figure.wide{margin-left:-70px;margin-right:-70px}
figure svg{width:100%;height:auto}
figure svg text{font-family:Manrope,system-ui,sans-serif}
figure svg .m{font-family:var(--mono)}
figcaption{font-size:14px;color:var(--muted);margin-top:16px;line-height:1.55;border-top:1px solid var(--line);padding-top:14px}
figcaption b{color:var(--navy);font-weight:600}
.ftitle{font-size:16px;font-weight:600;color:var(--navy);margin-bottom:4px}
.fsub{font-size:13.5px;color:var(--muted);margin-bottom:18px}

.legend{display:flex;gap:22px;flex-wrap:wrap;font-size:13.5px;color:var(--text);margin-bottom:18px}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:8px;vertical-align:-1px}
.mm{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.mm h4{font-size:14px;font-weight:600;color:var(--navy);margin-bottom:12px}
.bar{display:flex;align-items:center;gap:10px;margin-bottom:9px}
.bar .track{flex:1;height:22px;position:relative}
.bar .fill{height:22px;border-radius:0 4px 4px 0;min-width:4px}
.bar .v{font-size:13.5px;color:var(--text);font-weight:600;white-space:nowrap;min-width:92px}
.gain{font-family:var(--mono);font-size:12px;color:var(--muted);margin-top:8px}

table.t{width:100%;border-collapse:collapse;font-size:15px;margin:8px 0 6px}
table.t th{font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:500;text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
table.t td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top}
table.t td:first-child{font-weight:600;color:var(--navy)}

.chain{display:grid;grid-template-columns:1fr auto 1fr auto 1fr auto 1fr;gap:10px;align-items:stretch}
.chain .c{border:1px solid var(--line);border-radius:14px;padding:16px 14px;text-align:center;background:var(--bg)}
.chain .c.res{background:var(--navy);border-color:var(--navy)}
.chain .c b{display:block;white-space:nowrap;font-size:19px;font-weight:600;color:var(--navy);letter-spacing:-.01em;line-height:1.2}
.chain .c.res b{color:var(--green-l)}
.chain .c span{font-size:12.5px;color:var(--muted);display:block;margin-top:5px;line-height:1.35}
.chain .c.res span{color:#c3cddb}
.chain .op{display:grid;place-items:center;font-size:20px;color:var(--muted);font-weight:300}

.duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:26px 0}
.duo div{border:1px solid var(--line);border-radius:16px;padding:22px}
.duo small{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.duo b{display:block;font-size:28px;font-weight:300;color:var(--navy);margin:8px 0 6px;letter-spacing:-.02em;line-height:1.15}
.duo p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.5}

.note{border-left:3px solid var(--green-l);background:var(--green-bg);padding:18px 22px;border-radius:0 14px 14px 0;margin:26px 0;font-size:16px}
.note b{color:var(--navy)}
.warn{border-left:3px solid #C98A1B;background:#FBF4E4;padding:18px 22px;border-radius:0 14px 14px 0;margin:26px 0;font-size:16px}
.check{counter-reset:c;border-top:1px solid var(--line);margin-top:10px}
.check li{counter-increment:c;display:grid;grid-template-columns:44px 1fr;padding:16px 0;border-bottom:1px solid var(--line)}
.check li::before{content:"0" counter(c);font-family:var(--mono);font-size:13px;color:var(--green);padding-top:4px}

.cta{background:var(--navy);border-radius:22px;padding:44px 44px;color:#fff;margin:64px 0 20px;display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.cta h3{color:#fff;font-size:26px;font-weight:300;margin:0 0 6px;letter-spacing:-.01em}
.cta h3 strong{font-weight:600;color:var(--green-l)}
.cta p{color:#c3cddb;font-size:15.5px;margin:0;max-width:440px}
.srcs{font-size:14px;color:var(--muted);line-height:1.6}
.srcs li{margin-bottom:8px;padding-left:0}
.srcs li::before{display:none}
.about-a{display:flex;gap:18px;align-items:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0;margin:44px 0 0;font-size:15px;color:var(--muted)}
.about-a .av{flex:0 0 54px;height:54px;border-radius:50%;background:var(--navy);display:grid;place-items:center}
.about-a .av{overflow:hidden}
.about-a .av img{width:100%;height:100%;object-fit:cover}
.about-a b{color:var(--navy);display:block;font-size:16px}

/* liste d'articles */
.list{padding:70px 0 90px}
.list h1{font-size:clamp(34px,5vw,56px);font-weight:200;letter-spacing:-.02em;color:var(--navy);line-height:1.1;margin-bottom:14px}
.list h1 strong{font-weight:600}
.card-a{display:grid;grid-template-columns:1.1fr 1fr;gap:0;border:1px solid var(--line);border-radius:22px;overflow:hidden;text-decoration:none;margin-top:44px;transition:.4s var(--ease)}
.card-a:hover{border-color:var(--green-l);transform:translateY(-3px);box-shadow:0 24px 50px -30px rgba(20,35,60,.35)}
.card-a .vis{background:var(--navy);min-height:280px;position:relative}
.card-a .vis svg{position:absolute;inset:0;width:100%;height:100%}
.card-a .txt{padding:36px}
.card-a h2{font-size:28px;font-weight:300;color:var(--navy);letter-spacing:-.02em;line-height:1.2;margin:10px 0 12px}
.card-a h2 strong{font-weight:600}
.card-a p{color:var(--muted);font-size:15.5px}
.card-a .more{display:inline-block;margin-top:18px;color:var(--green);font-weight:600;font-size:15px}

.grid-a{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:44px}
.grid-a .card-a{margin-top:0}
.card-a.v{grid-template-columns:1fr;grid-template-rows:220px 1fr}
.card-a.v .vis{min-height:220px}
.card-a.v h2{font-size:24px}
@media (max-width:860px){.grid-a{grid-template-columns:1fr}}

footer{background:var(--navy);color:#9fb0c6;padding:54px 0 30px;font-size:14px;font-weight:300;margin-top:60px}
.foot{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap;padding-bottom:30px;border-bottom:1px solid var(--line-d)}
.foot img{height:50px;width:auto}
.legal{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:22px;font-size:13px}
footer a{color:#c9d2df;text-decoration:none}

@media (max-width:960px){
  figure.wide{margin-left:0;margin-right:0}
  .mm{grid-template-columns:1fr}
  .keys{grid-template-columns:1fr 1fr}
  .keys div:nth-child(2){border-right:0}
  .keys div:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .chain{grid-template-columns:1fr}
  .chain .op{padding:2px 0}
  .card-a{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{font-size:16.5px}
  .menu-btn{display:block}
  .nav ul{display:none;position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line);padding:6px 24px 20px}
  .nav ul.open{display:flex}
  .nav ul a{display:block;padding:13px 0;border-bottom:1px solid var(--line)}
  .nav ul .btn{margin-top:14px;justify-content:center;border-bottom:0}
  .a-hero{padding:56px 0 50px}
  figure{padding:18px 16px 16px}
  .duo{grid-template-columns:1fr}
  .cta{padding:32px 26px}
  table.t{font-size:14px}
  table.t th,table.t td{padding:9px 7px}
}