@import url('https://fonts.googleapis.com/css2?family=Cormorant:ital,wght@0,300;0,400;0,600;1,300;1,400;1,600&family=Lora:ital,opsz,wght@0,10..72,300;0,10..72,400;1,10..72,300&family=Fira+Code:wght@400;500&display=swap');
:root{
  --sb:#020c1c;--sb2:#040e28;--a:#6ac8f8;--a2:#1878c8;
  --ink:#b8e0ff;--ink2:rgba(184,224,255,.62);--ink3:rgba(184,224,255,.28);
  --brd:rgba(106,200,248,.2);
  --brdh:rgba(106,200,248,.5);
  --fd:'Cormorant';--fb:'Lora';--fm:'Fira Code';--r:8px;--sw:272px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}html{scroll-behavior:smooth;}
body{font-family:var(--fb),Georgia,serif;background:var(--sb);color:var(--ink);font-size:16.5px;line-height:1.82;background-image:radial-gradient(ellipse at 50% 30%,rgba(24,120,200,.14) 0,transparent 58%),repeating-linear-gradient(0deg,transparent,transparent 69px,rgba(24,120,200,.02) 69px,rgba(24,120,200,.02) 70px);background-attachment:fixed;}
.progress-bar{position:fixed;top:0;left:0;height:4px;width:0%;background:linear-gradient(90deg,#1878c8,#6ac8f8,#1878c8);z-index:200;transition:width .08s linear;box-shadow:0 1px 8px #6ac8f888;}
.page-layout{display:flex;min-height:100vh;}
.sidebar{width:var(--sw);flex-shrink:0;background:var(--sb2);border-right:1px solid var(--brd);position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:#040e28 transparent;}
.sidebar-header{padding:28px 22px 22px;border-bottom:1px solid var(--brd);}
.sidebar-back{font-family:var(--fm);font-size:.6rem;letter-spacing:.14em;color:var(--ink3);text-decoration:none;display:block;margin-bottom:12px;}
.sidebar-back:hover{color:var(--a);}
.sidebar-title{font-family:var(--fd),Georgia,serif;font-size:1.8rem;font-weight:600;color:var(--a);line-height:1.05;font-style:italic;}
.toc-nav{padding:10px 0 14px;flex:1;}
.toc-section-label{font-family:var(--fm);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink3);padding:8px 22px 4px;}
.toc-link{display:block;padding:5px 22px 5px 26px;font-family:var(--fb),sans-serif;font-size:.83rem;color:var(--ink2);text-decoration:none;border-left:2px solid transparent;transition:all .15s;}
.toc-link:hover,.toc-link.active{color:var(--a);border-left-color:var(--a);background:rgba(106,200,248,.08);}
.sidebar-nav{padding:12px 22px;border-top:1px solid var(--brd);}
.sidebar-nav p{font-family:var(--fm);font-size:.56rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink3);margin-bottom:7px;}
.sidebar-nav a{display:block;font-family:var(--fb),sans-serif;font-size:.8rem;color:var(--ink3);text-decoration:none;padding:2px 0;}
.sidebar-nav a:hover,.sidebar-nav a.current{color:var(--a);font-weight:700;}
.main{flex:1;min-width:0;padding:0 58px 100px;max-width:840px;}
.page-header{padding:54px 0 36px;margin-bottom:50px;border-bottom:1px solid var(--brd);position:relative;}
.page-header::after{content:'';position:absolute;bottom:-1px;left:0;width:130px;height:2px;background:linear-gradient(90deg,var(--a),transparent);box-shadow:0 0 10px #6ac8f888;}
.subject-tag{font-family:var(--fm);font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:var(--a);margin-bottom:12px;}
h1.page-title{font-family:var(--fd),Georgia,serif;font-size:3.4rem;font-weight:600;color:var(--ink);line-height:.96;font-style:italic;}
h1.page-title .sub{color:var(--a);font-style:normal;font-size:1.2rem;display:block;margin-top:6px;font-family:var(--fm);letter-spacing:.06em;font-weight:400;}
.page-intro{margin-top:16px;font-size:1rem;color:var(--ink2);font-style:italic;max-width:520px;}
.section{margin-bottom:60px;scroll-margin-top:26px;}
h2.section-title{font-family:var(--fd),Georgia,serif;font-size:1.85rem;font-weight:600;color:var(--ink);margin-bottom:20px;padding-bottom:8px;border-bottom:1px solid var(--brd);display:flex;align-items:baseline;gap:14px;font-style:italic;}
h2.section-title .num{font-family:var(--fm);font-size:.7rem;font-style:normal;color:var(--sb);background:var(--a);padding:2px 10px;border-radius:20px;font-weight:400;box-shadow:0 0 6px #6ac8f888;}
h3.sub-title{font-family:var(--fd),Georgia,serif;font-size:1.2rem;color:var(--a);margin:26px 0 11px;font-style:italic;}
p{margin-bottom:.9em;}ul,ol{padding-left:1.4em;margin-bottom:.9em;}li{margin-bottom:.3em;}
.box{padding:15px 18px 13px;margin:16px 0;border-radius:var(--r);border:1px solid var(--brd);background:rgba(255,255,255,.05);}
.box-label{font-family:var(--fm);font-size:.62rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;display:block;margin-bottom:8px;}
.box.def{background:rgba(106,200,248,.09);border-color:var(--brdh);}.box.def .box-label{color:var(--a);}
.box.histoire{background:rgba(24,120,200,.07);border-left:4px solid var(--a2);}.box.histoire .box-label{color:var(--a2);}
.box.technique{background:rgba(255,255,255,.05);border-left:4px solid var(--a);}.box.technique .box-label{color:var(--a);}
.box.conseil{background:rgba(60,160,200,.07);border-left:4px solid #50b0d0;}.box.conseil .box-label{color:#60c0e0;}
.box.attention{background:rgba(220,60,30,.08);border-left:4px solid #d04020;}.box.attention .box-label{color:#e06040;}
.box.chiffres{background:rgba(0,0,0,.4);border-color:var(--brdh);}.box.chiffres .box-label{color:var(--a);}
.box.remark{background:transparent;border-left:3px solid var(--brd);padding-left:20px;}.box.remark .box-label{color:var(--ink3);}
.detail-toggle{display:inline-flex;align-items:center;gap:6px;font-family:var(--fd),Georgia,serif;font-style:italic;font-size:.88rem;color:var(--a);border:1px solid var(--a);padding:4px 14px;border-radius:20px;cursor:pointer;background:transparent;margin-top:8px;transition:all .18s;user-select:none;}
.detail-toggle:hover{background:var(--a);color:var(--sb);}.detail-toggle .arrow{transition:transform .2s;font-style:normal;}.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:13px 18px;background:rgba(0,0,0,.3);border:1px dashed var(--brd);border-radius:var(--r);color:var(--ink2);font-size:.93rem;}
.data-table{width:100%;border-collapse:collapse;margin:14px 0;font-size:.89rem;border-radius:var(--r);overflow:hidden;border:1px solid var(--brd);}
.data-table th{background:rgba(0,0,0,.5);color:var(--a);padding:9px 14px;text-align:left;font-family:var(--fm);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;border-bottom:1px solid var(--brdh);}
.data-table td{padding:8px 14px;border-bottom:1px solid var(--brd);vertical-align:top;}
.data-table tr:hover td{background:rgba(106,200,248,.07);}.data-table td:first-child{font-family:var(--fm);font-size:.8rem;color:var(--a);}
code{font-family:var(--fm);font-size:.82em;background:rgba(0,0,0,.3);color:var(--a);padding:2px 6px;border-radius:4px;border:1px solid var(--brd);}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:14px 0;}.two-col .box{margin:0;}
.mobile-header{display:none;position:sticky;top:0;z-index:50;background:var(--sb2);border-bottom:2px solid var(--a);padding:12px 18px;align-items:center;justify-content:space-between;}
.mobile-menu-btn{background:none;border:none;color:var(--a);font-size:1.3rem;cursor:pointer;}
.mobile-title{font-family:var(--fd),Georgia,serif;font-size:1rem;color:var(--a);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,.78);}
.drawer-panel{position:relative;z-index:1;width:272px;background:var(--sb2);height:100%;overflow-y:auto;padding:14px 0;border-right:1px solid var(--brd);}

@media(max-width:960px){.sidebar{display:none;}.mobile-header{display:flex;}.main{padding:0 20px 70px;}h1.page-title{font-size:2.6rem;}.two-col{grid-template-columns:1fr;}}