:root{
    --navy: #0F2130;
    --navy-deep: #0A161F;
    --gold: #C9962C;
    --gold-soft: #E0B65C;
    --paper: #EDE7DA;
    --paper-dim: #E3DCCB;
    --ink: #101820;
    --slate: #7C8B96;
    --line: rgba(15,33,48,0.12);
    --line-dark: rgba(201,150,44,0.25);
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth; overflow-x:hidden;}
  body{
    background:var(--paper);
    color:var(--ink);
    font-family:'Inter',sans-serif;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
    width:100%;
  }
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.18em;
    text-transform:uppercase;
  }
  a{color:inherit; text-decoration:none;}

  /* ---------- NAV ---------- */
  nav{
    position:sticky; top:0; z-index:50;
    background:var(--navy);
    border-bottom:1px solid rgba(201,150,44,0.2);
  }
  .nav-inner{
    max-width:1080px;
    margin:0 auto;
    padding:18px 24px;
    display:flex;
    align-items:center;
    justify-content:space-between;
  }
  .nav-brand{display:flex; align-items:center; gap:10px;}
  .nav-brand svg{width:26px; height:26px;}
  .nav-brand span{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    letter-spacing:0.12em;
    color:var(--gold-soft);
    text-transform:uppercase;
  }
  .nav-links{display:flex; gap:32px;}
  .nav-links a{
    font-size:13.5px;
    color:rgba(237,231,218,0.7);
    transition:color 0.2s;
  }
  .nav-links a:hover{color:var(--gold-soft);}
  .nav-cta{
    background:var(--gold);
    color:var(--navy-deep);
    font-size:13px;
    font-weight:600;
    padding:9px 18px;
  }
  .nav-toggle{
    display:none;
    background:none;
    border:none;
    outline:none;
    -webkit-appearance:none;
    appearance:none;
    cursor:pointer;
    padding:6px;
    margin-right:4px;
    align-items:center;
    justify-content:center;
  }
  .nav-toggle svg{width:22px; height:22px; display:block;}
  .nav-right{display:flex; align-items:center;}

  @media (max-width:760px){
    .nav-inner{padding:14px 16px; flex-wrap:wrap;}
    .nav-brand span{font-size:10px; letter-spacing:0.08em;}
    .nav-brand svg{width:22px; height:22px;}
    .nav-toggle{display:flex;}
    .nav-cta{font-size:11.5px; padding:8px 12px; white-space:nowrap;}
    .nav-links{
      display:none;
      position:absolute;
      top:100%;
      left:0;
      right:0;
      background:var(--navy);
      flex-direction:column;
      gap:0;
      border-top:1px solid rgba(201,150,44,0.2);
      box-shadow:0 12px 24px rgba(0,0,0,0.3);
    }
    .nav-links.open{display:flex;}
    .nav-links a{
      padding:16px 20px;
      border-bottom:1px solid rgba(201,150,44,0.1);
      font-size:14.5px;
    }
  }

  /* ---------- HERO ---------- */
  .hero{
    position:relative;
    background:var(--navy);
    color:var(--paper);
    overflow:hidden;
    padding:0 24px;
  }
  .hero-inner{
    max-width:1080px;
    margin:0 auto;
    padding:100px 0 130px;
    position:relative;
    z-index:2;
    max-width:760px;
  }
  .hero .eyebrow{color:var(--gold); margin-bottom:22px; display:block;}
  .hero h1{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:clamp(36px,5.5vw,58px);
    line-height:1.1;
    letter-spacing:-0.01em;
  }
  .hero h1 em{font-style:italic; font-weight:500; color:var(--gold-soft);}
  .hero-sub{
    margin-top:24px;
    font-size:17px;
    line-height:1.65;
    color:rgba(237,231,218,0.7);
    max-width:540px;
  }
  .hero-ctas{
    margin-top:38px;
    display:flex;
    gap:14px;
    flex-wrap:wrap;
  }
  .btn-primary{
    background:var(--gold);
    color:var(--navy-deep);
    font-weight:600;
    font-size:14.5px;
    padding:15px 26px;
  }
  .btn-secondary{
    border:1px solid rgba(201,150,44,0.4);
    color:var(--paper);
    font-weight:500;
    font-size:14.5px;
    padding:15px 26px;
  }
  .trendline-svg{
    position:absolute; top:0; right:-5%;
    height:100%; width:55%;
    z-index:1; opacity:0.85;
  }

  /* ---------- SECTION SHELL ---------- */
  .section{
    max-width:1080px;
    margin:0 auto;
    padding:100px 24px;
  }
  .section-eyebrow{color:var(--gold); margin-bottom:14px; display:block;}
  .section-head h2{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:clamp(26px,3.2vw,36px);
    color:var(--navy);
    max-width:600px;
    line-height:1.2;
  }
  .section-head p{
    margin-top:16px;
    font-size:15.5px;
    color:var(--slate);
    max-width:520px;
    line-height:1.6;
  }

  /* ---------- PROFIL A ---------- */
  .profile-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
    margin-top:44px;
  }
  .profile-cell{background:var(--paper); padding:32px 26px;}
  .profile-cell .num{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--gold); letter-spacing:0.1em;}
  .profile-cell h3{font-family:'Fraunces',serif; font-weight:600; font-size:21px; margin:12px 0 8px; color:var(--navy);}
  .profile-cell p{font-size:14px; line-height:1.6; color:var(--slate);}

  /* ---------- DEMONSTRATION ANALYTIQUE ---------- */
  .demo{background:var(--navy); color:var(--paper);}
  .demo .section-eyebrow{color:var(--gold-soft);}
  .demo .section-head h2{color:var(--paper);}
  .demo .section-head p{color:rgba(237,231,218,0.6);}
  .demo-card{
    margin-top:44px;
    border:1px solid rgba(201,150,44,0.25);
    background:rgba(255,255,255,0.02);
    padding:36px;
  }
  .demo-meta{
    display:flex;
    gap:20px;
    font-family:'IBM Plex Mono',monospace;
    font-size:11.5px;
    color:var(--gold-soft);
    letter-spacing:0.06em;
    margin-bottom:18px;
    flex-wrap:wrap;
  }
  .demo-card h3{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:24px;
    margin-bottom:14px;
  }
  .demo-card p{
    font-size:15px;
    line-height:1.65;
    color:rgba(237,231,218,0.68);
    max-width:640px;
  }
  .demo-status{
    display:inline-block;
    margin-top:20px;
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.08em;
    padding:6px 12px;
    border:1px solid var(--gold);
    color:var(--gold-soft);
  }

  /* ---------- COURSE ---------- */
  .course-grid{
    margin-top:44px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .course-card{
    background:#fff;
    border:1px solid var(--line);
    padding:30px 26px;
    display:flex;
    flex-direction:column;
  }
  .course-card .num{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--gold);}
  .course-card h3{font-family:'Fraunces',serif; font-weight:600; font-size:20px; margin:14px 0 10px; color:var(--navy);}
  .course-card p{font-size:14px; color:var(--slate); line-height:1.6; flex:1;}
  .course-card .tag{
    margin-top:18px;
    font-family:'IBM Plex Mono',monospace;
    font-size:10.5px;
    letter-spacing:0.06em;
    color:var(--slate);
  }
  .course-cta{
    margin-top:40px;
    display:inline-block;
    background:var(--navy);
    color:var(--paper);
    font-weight:600;
    font-size:14px;
    padding:15px 26px;
  }

  /* ---------- MENTORAT ---------- */
  .mentor-wrap{
    margin-top:44px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:56px;
    align-items:center;
  }
  .mentor-text p{font-size:15px; color:var(--slate); line-height:1.65; margin-bottom:16px;}
  .mentor-points{list-style:none; margin-top:20px;}
  .mentor-points li{
    display:flex; gap:12px;
    padding:10px 0;
    border-top:1px solid var(--line);
    font-size:14px;
    color:var(--ink);
  }
  .mentor-points li:last-child{border-bottom:1px solid var(--line);}
  .mentor-points li::before{content:"—"; color:var(--gold); font-weight:600;}
  .mentor-panel{
    background:var(--navy);
    color:var(--paper);
    padding:40px 34px;
  }
  .mentor-panel .eyebrow{color:var(--gold-soft); margin-bottom:14px; display:block;}
  .mentor-panel h3{font-family:'Fraunces',serif; font-weight:600; font-size:22px; margin-bottom:14px;}
  .mentor-panel p{font-size:14px; color:rgba(237,231,218,0.65); line-height:1.6; margin-bottom:24px;}

  /* ---------- PLATFORMS ---------- */
  .platform-grid{
    margin-top:44px;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
  }
  .platform-cell{
    background:var(--paper);
    padding:28px 22px;
  }
  .platform-cell .eyebrow{color:var(--gold); margin-bottom:10px; display:block;}
  .platform-cell h4{font-family:'Fraunces',serif; font-weight:600; font-size:17px; color:var(--navy); margin-bottom:6px;}
  .platform-cell p{font-size:13px; color:var(--slate); line-height:1.5;}

  /* ---------- NEWSLETTER CAPTURE ---------- */
  .capture-section{
    background:var(--navy-deep);
    color:var(--paper);
    text-align:center;
    padding:110px 24px 90px;
  }
  .capture-section h2{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:clamp(26px,3.6vw,38px);
    max-width:600px;
    margin:0 auto 16px;
    line-height:1.25;
  }
  .capture-section h2 em{color:var(--gold-soft); font-style:italic;}
  .capture-section .sub{
    font-size:15px;
    color:rgba(237,231,218,0.6);
    max-width:460px;
    margin:0 auto 36px;
    line-height:1.6;
  }
  .capture-box{
    max-width:440px;
    margin:0 auto;
    display:flex;
    border:1px solid rgba(201,150,44,0.4);
    background:rgba(255,255,255,0.03);
  }
  .capture-box input{
    flex:1; min-width:0;
    background:transparent; border:none; outline:none;
    padding:16px 18px;
    color:var(--paper);
    font-family:'Inter',sans-serif;
    font-size:15px;
  }
  .capture-box input::placeholder{color:rgba(237,231,218,0.4);}
  .capture-box button{
    background:var(--gold);
    border:none;
    color:var(--navy-deep);
    font-weight:600;
    font-size:14px;
    padding:0 22px;
    cursor:pointer;
    white-space:nowrap;
  }
  .capture-micro{
    margin-top:14px;
    font-size:11.5px;
    font-family:'IBM Plex Mono',monospace;
    color:rgba(237,231,218,0.4);
    letter-spacing:0.04em;
  }

  /* ---------- FOOTER ---------- */
  footer{
    background:var(--navy-deep);
    border-top:1px solid rgba(201,150,44,0.15);
    padding:36px 24px;
  }
  .footer-inner{
    max-width:1080px;
    margin:0 auto;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:16px;
  }
  .footer-inner .brand{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.12em;
    color:rgba(237,231,218,0.4);
    text-transform:uppercase;
  }
  .footer-links{display:flex; gap:22px;}
  .footer-links a{
    font-size:12.5px;
    color:rgba(237,231,218,0.45);
  }

  @media (max-width:760px){
    .profile-grid, .course-grid, .platform-grid{grid-template-columns:1fr;}
    .mentor-wrap{grid-template-columns:1fr;}
    .capture-box{flex-direction:column;}
    .section{padding:60px 20px;}
    .hero-inner{padding:70px 0 80px;}
    .hero h1{font-size:clamp(28px,8vw,40px);}
    .demo-card{padding:24px;}
    .cta-strip{padding:28px 24px; flex-direction:column; align-items:flex-start;}
    .capture-section{padding:70px 20px 60px;}
  }

  /* ---------- SUBPAGE HERO ---------- */
  .page-hero{
    background:var(--navy);
    color:var(--paper);
    padding:0 24px;
    position:relative;
    overflow:hidden;
  }
  .page-hero-inner{
    max-width:1080px;
    margin:0 auto;
    padding:64px 0 70px;
    position:relative;
    z-index:2;
  }
  .page-hero h1{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:clamp(30px,4.4vw,46px);
    line-height:1.15;
    max-width:640px;
  }
  .page-hero h1 em{font-style:italic; font-weight:500; color:var(--gold-soft);}
  .page-hero p{
    margin-top:18px;
    font-size:16px;
    line-height:1.6;
    color:rgba(237,231,218,0.68);
    max-width:520px;
  }
  .breadcrumb{
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.1em;
    color:rgba(237,231,218,0.4);
    text-transform:uppercase;
    margin-bottom:20px;
    display:block;
  }
  .breadcrumb a{color:var(--gold-soft);}

  /* ---------- NUMBERED DETAIL LIST ---------- */
  .detail-list{margin-top:44px; display:flex; flex-direction:column;}
  .detail-item{
    display:grid;
    grid-template-columns:70px 1fr;
    gap:24px;
    padding:28px 0;
    border-top:1px solid var(--line);
  }
  .detail-item:last-child{border-bottom:1px solid var(--line);}
  .detail-item .num{
    font-family:'IBM Plex Mono',monospace;
    font-size:13px;
    color:var(--gold);
    padding-top:2px;
  }
  .detail-item h3{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:19px;
    color:var(--navy);
    margin-bottom:8px;
  }
  .detail-item p{font-size:14.5px; color:var(--slate); line-height:1.65;}

  /* ---------- TWO COLUMN DARK BLOCK ---------- */
  .dark-block{background:var(--navy); color:var(--paper);}
  .dark-block .section-eyebrow{color:var(--gold-soft);}
  .dark-block .section-head h2{color:var(--paper);}
  .dark-block .section-head p{color:rgba(237,231,218,0.6);}
  .dark-detail-list .detail-item{border-top:1px solid rgba(201,150,44,0.15);}
  .dark-detail-list .detail-item:last-child{border-bottom:1px solid rgba(201,150,44,0.15);}
  .dark-detail-list h3{color:var(--paper);}
  .dark-detail-list p{color:rgba(237,231,218,0.6);}

  /* ---------- PART CARD (cours) ---------- */
  .part-block{
    margin-top:60px;
    border-top:1px solid var(--line);
    padding-top:44px;
  }
  .part-block:first-child{margin-top:44px;}
  .part-label{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--gold);
    letter-spacing:0.08em;
    margin-bottom:10px;
    display:block;
  }
  .part-block h2{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:clamp(24px,3vw,32px);
    color:var(--navy);
    margin-bottom:14px;
  }
  .part-block > p{
    font-size:15px;
    color:var(--slate);
    line-height:1.65;
    max-width:600px;
    margin-bottom:28px;
  }
  .chip-row{display:flex; flex-wrap:wrap; gap:10px;}
  .chip{
    font-family:'IBM Plex Mono',monospace;
    font-size:12px;
    color:var(--navy);
    border:1px solid var(--line);
    padding:8px 14px;
    background:#fff;
  }

  /* ---------- NOTE BOX ---------- */
  .note-box{
    margin-top:50px;
    border:1px dashed var(--line);
    padding:24px 28px;
    background:var(--paper-dim);
  }
  .note-box .eyebrow{color:var(--gold); display:block; margin-bottom:8px;}
  .note-box p{font-size:14px; color:var(--slate); line-height:1.6;}

  /* ---------- PRICING / CTA STRIP ---------- */
  .cta-strip{
    margin-top:60px;
    background:var(--navy);
    color:var(--paper);
    padding:44px 40px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:20px;
  }
  .cta-strip h3{font-family:'Fraunces',serif; font-weight:600; font-size:22px;}
  .cta-strip p{font-size:14px; color:rgba(237,231,218,0.6); margin-top:6px;}

  /* ---------- FORM (mentorat) ---------- */
  .form-wrap{
    margin-top:44px;
    max-width:640px;
    background:#fff;
    border:1px solid var(--line);
    padding:40px;
  }
  .form-row{margin-bottom:22px;}
  .form-row label{
    display:block;
    font-family:'IBM Plex Mono',monospace;
    font-size:11px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--slate);
    margin-bottom:8px;
  }
  .form-row input, .form-row textarea, .form-row select{
    width:100%;
    border:1px solid var(--line);
    background:var(--paper);
    padding:12px 14px;
    font-family:'Inter',sans-serif;
    font-size:14.5px;
    color:var(--ink);
    outline:none;
  }
  .form-row textarea{min-height:90px; resize:vertical;}
  .form-submit{
    background:var(--gold);
    color:var(--navy-deep);
    border:none;
    font-weight:600;
    font-size:14.5px;
    padding:15px 28px;
    cursor:pointer;
    width:100%;
  }
  .form-note{
    margin-top:16px;
    font-size:12.5px;
    color:var(--slate);
    font-family:'IBM Plex Mono',monospace;
  }

  .mentor-steps{margin-top:44px; display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line);}
  .mentor-step-cell{background:var(--paper); padding:30px 24px;}
  .mentor-step-cell .num{font-family:'IBM Plex Mono',monospace; font-size:12px; color:var(--gold);}
  .mentor-step-cell h3{font-family:'Fraunces',serif; font-weight:600; font-size:19px; margin:12px 0 8px; color:var(--navy);}
  .mentor-step-cell p{font-size:13.5px; color:var(--slate); line-height:1.6;}

  /* ---------- ARCHIVE LIST ---------- */
  .archive-list{margin-top:44px; display:flex; flex-direction:column;}
  .archive-item{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:20px;
    padding:22px 0;
    border-top:1px solid var(--line);
    flex-wrap:wrap;
  }
  .archive-item:last-child{border-bottom:1px solid var(--line);}
  .archive-meta{display:flex; flex-direction:column; gap:4px;}
  .archive-date{
    font-family:'IBM Plex Mono',monospace;
    font-size:11.5px;
    color:var(--gold);
    letter-spacing:0.06em;
  }
  .archive-title{
    font-family:'Fraunces',serif;
    font-weight:600;
    font-size:17px;
    color:var(--navy);
  }
  .archive-download{
    font-family:'Inter',sans-serif;
    font-size:13px;
    font-weight:600;
    color:var(--navy);
    border:1px solid var(--line);
    padding:10px 18px;
    white-space:nowrap;
    transition:background 0.2s ease, color 0.2s ease;
  }
  .archive-download:hover{background:var(--navy); color:var(--paper);}

  .archive-drive-wrap{
    margin-top:44px;
    border:1px solid var(--line);
    background:#fff;
    overflow:hidden;
  }
  .archive-drive-wrap iframe{display:block; border:none;}

  @media (max-width:760px){
    .archive-drive-wrap iframe{height:500px;}
  }

  @media (max-width:760px){
    .detail-item{grid-template-columns:1fr;}
    .mentor-steps{grid-template-columns:1fr;}
    .cta-strip{flex-direction:column; align-items:flex-start;}
    .page-hero-inner{padding:44px 0 50px;}
    .page-hero h1{font-size:clamp(26px,7.5vw,34px);}
    .form-wrap{padding:24px;}
    .mentor-panel{padding:28px 24px;}
    .archive-item{flex-direction:column; align-items:flex-start;}
    .archive-download{width:100%; text-align:center;}
  }