@import url('https://fonts.googleapis.com/css2?family=Spectral:ital,wght@0,300;0,400;0,600;1,300;1,400;1,600&family=Libre+Baskerville:ital,wght@0,400;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  --navy:#001f5b;--navy-2:#002b80;--red:#c8102e;--cream:#f8f6f0;
  --gold:#b8963c;--ink:#0a0f20;--ink-mid:#4a5070;
  --p:#002395;--a:#c8102e;--a2:#b8963c;
  --border:rgba(0,35,149,.15);--bhi:rgba(0,35,149,.4);
  --fd:'Spectral',Georgia,serif;--fb:'Libre Baskerville',Georgia,serif;--fm:'JetBrains Mono',monospace;
  --sw:272px;--r:6px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}html{scroll-behavior:smooth;}
body{font-family:var(--fb);background:var(--cream);color:var(--ink);font-size:16.5px;line-height:1.82;
  background-image:linear-gradient(rgba(0,35,149,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(0,35,149,.025) 1px,transparent 1px);
  background-size:42px 42px;background-attachment:fixed;}
.progress-bar{position:fixed;top:0;left:0;height:4px;width:0%;z-index:200;transition:width .08s;
  background:linear-gradient(90deg,var(--navy),var(--red),#fff,var(--red),var(--navy));}
.page-layout{display:flex;min-height:100vh;}
.sidebar{width:var(--sw);flex-shrink:0;background:var(--navy);position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;
  border-right:4px solid var(--red);scrollbar-width:thin;scrollbar-color:var(--navy-2) transparent;}
.sidebar::before{content:'';position:absolute;top:0;right:0;width:4px;height:100%;background:linear-gradient(180deg,var(--navy),var(--red),var(--cream),var(--red),var(--navy));opacity:.6;}
.sidebar-header{padding:28px 20px 22px;border-bottom:1px solid rgba(255,255,255,.1);}
.sidebar-back{font-family:var(--fm);font-size:.62rem;letter-spacing:.14em;color:rgba(255,255,255,.32);text-decoration:none;display:block;margin-bottom:12px;}
.sidebar-back:hover{color:#a8c0ff;}
.sidebar-title{font-family:var(--fd);font-size:2rem;color:#e8f0ff;font-style:italic;line-height:1.0;}
.toc-nav{padding:12px 0 16px;flex:1;}
.toc-section-label{font-family:var(--fm);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.2);padding:10px 20px 4px;}
.toc-link{display:block;padding:5px 20px 5px 24px;font-family:var(--fb);font-size:.83rem;color:rgba(255,255,255,.5);text-decoration:none;border-left:2px solid transparent;transition:all .15s;}
.toc-link:hover,.toc-link.active{color:#a8c0ff;border-left-color:var(--red);background:rgba(200,16,46,.1);}
.sidebar-nav{padding:12px 20px;border-top:1px solid rgba(255,255,255,.08);}
.sidebar-nav p{font-family:var(--fm);font-size:.58rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.22);margin-bottom:7px;}
.sidebar-nav a{display:block;font-family:var(--fb);font-size:.8rem;color:rgba(255,255,255,.36);text-decoration:none;padding:2px 0;}
.sidebar-nav a:hover,.sidebar-nav a.current{color:#a8c0ff;}
.main{flex:1;min-width:0;padding:0 56px 100px;max-width:840px;background:var(--cream);}
.page-header{padding:52px 0 34px;margin-bottom:46px;border-bottom:2px solid var(--navy);position:relative;}
.page-header::after{content:'';position:absolute;bottom:-2px;left:0;width:80px;height:2px;background:var(--red);}
.subject-tag{font-family:var(--fm);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--p);margin-bottom:12px;}
h1.page-title{font-family:var(--fd);font-size:3.5rem;color:var(--ink);line-height:.95;font-style:italic;}
h1.page-title .sub{color:var(--p);font-style:normal;font-size:1.2rem;display:block;margin-top:6px;font-family:var(--fm);letter-spacing:.08em;text-transform:uppercase;}
.page-intro{margin-top:14px;font-size:1rem;color:var(--ink-mid);font-style:italic;max-width:520px;}
.section{margin-bottom:58px;scroll-margin-top:24px;}
h2.section-title{font-family:var(--fd);font-size:1.9rem;font-style:italic;color:var(--ink);margin-bottom:18px;padding-bottom:8px;border-bottom:1px solid var(--border);display:flex;align-items:baseline;gap:12px;}
h2.section-title .num{font-family:var(--fm);font-size:.7rem;font-style:normal;color:#fff;background:var(--p);padding:2px 9px;border-radius:3px;}
h3.sub-title{font-family:var(--fd);font-size:1.25rem;font-style:italic;color:var(--p);margin:24px 0 10px;}
p{margin-bottom:.9em;}ul,ol{padding-left:1.4em;margin-bottom:.9em;}li{margin-bottom:.28em;}
.box{padding:15px 18px 13px;margin:16px 0;border-radius:var(--r);}
.box-label{font-family:var(--fm);font-size:.62rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;display:block;margin-bottom:7px;}
.box.def{background:#e8f0ff;border:1px solid rgba(0,35,149,.2);border-left:4px solid var(--p);}.box.def .box-label{color:var(--p);}
.box.histoire{background:#fff8f0;border:1px solid rgba(184,150,60,.25);border-left:4px solid var(--gold);}.box.histoire .box-label{color:var(--gold);}
.box.technique{background:#f8f8f8;border:1px solid #ddd;border-left:4px solid var(--ink-mid);}.box.technique .box-label{color:var(--ink-mid);}
.box.conseil{background:#fff;border:1px solid rgba(0,35,149,.15);}.box.conseil .box-label{color:var(--p);}
.box.attention{background:#fff5f5;border:1px solid rgba(200,16,46,.2);border-left:4px solid var(--red);}.box.attention .box-label{color:var(--red);}
.box.chiffres{background:#f0f4ff;border:1px solid rgba(0,35,149,.15);font-family:var(--fm);}.box.chiffres .box-label{color:var(--p);}
.box.remark{background:transparent;border-left:3px solid #ccc;padding-left:18px;}.box.remark .box-label{color:#888;}
.detail-toggle{display:inline-flex;align-items:center;gap:6px;font-family:var(--fm);font-size:.7rem;color:var(--p);border:1px solid var(--p);padding:4px 12px;border-radius:3px;cursor:pointer;background:transparent;margin-top:8px;transition:all .15s;user-select:none;}
.detail-toggle:hover{background:var(--p);color:#fff;}
.detail-toggle .arrow{transition:transform .2s;}.detail-toggle.open .arrow{transform:rotate(90deg);}
.detail-content{max-height:0;overflow:hidden;transition:max-height .3s ease;}.detail-content.open{max-height:900px;}
.detail-inner{margin-top:10px;padding:12px 16px;background:#f0f4ff;border:1px solid var(--border);border-radius:var(--r);color:var(--ink-mid);font-size:.92rem;}
.data-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.88rem;border-radius:var(--r);overflow:hidden;}
.data-table th{background:var(--navy);color:#e8f0ff;padding:9px 13px;text-align:left;font-family:var(--fm);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;}
.data-table td{padding:8px 13px;border-bottom:1px solid var(--border);vertical-align:top;background:#fff;}
.data-table tr:nth-child(even) td{background:#f8f9ff;}
.data-table td:first-child{font-family:var(--fm);font-size:.8rem;color:var(--p);}
code{font-family:var(--fm);font-size:.82em;background:#e8f0ff;color:var(--p);padding:2px 6px;border-radius:3px;}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0;}.two-col .box{margin:0;}
.mobile-header{display:none;position:sticky;top:0;z-index:50;background:var(--navy);border-bottom:3px solid var(--red);padding:12px 18px;align-items:center;justify-content:space-between;}
.mobile-menu-btn{background:none;border:none;color:#e8f0ff;font-size:1.3rem;cursor:pointer;}
.mobile-title{font-family:var(--fd);font-size:1rem;color:#e8f0ff;font-style:italic;}
.mobile-drawer{display:none;position:fixed;inset:0;z-index:100;}.mobile-drawer.open{display:flex;}
.drawer-overlay{position:absolute;inset:0;background:rgba(0,0,0,.65);}
.drawer-panel{position:relative;z-index:1;width:272px;background:var(--navy);height:100%;overflow-y:auto;padding:14px 0;border-right:3px solid var(--red);}
@media(max-width:960px){.sidebar{display:none;}.mobile-header{display:flex;}.main{padding:0 18px 70px;}h1.page-title{font-size:2.6rem;}.two-col{grid-template-columns:1fr;}}