:root {
      color-scheme: light;
      --canvas: #fffdf8;
      --paper: #ffffff;
      --paper-warm: #fff7e8;
      --surface: #f7f5ef;
      --ink: #111827;
      --ink-soft: #374151;
      --muted: #697076;
      --line: #e6dfd3;
      --line-strong: #d3c6b5;
      --orange: #ee6043;
      --orange-deep: #b43f2c;
      --teal: #087f83;
      --teal-soft: #e6f6f5;
      --blue: #2f66b1;
      --blue-soft: #e9f1ff;
      --yellow: #ffd66b;
      --yellow-soft: #fff4c7;
      --green: #2c7a61;
      --green-soft: #e9f6ef;
      --rose-soft: #fff0ed;
      --shadow: 0 18px 48px rgba(58, 43, 24, 0.08);
      --radius: 8px;
      --max: 1180px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      color: var(--ink);
      background: var(--canvas);
      line-height: 1.55;
    }

    img {
      display: block;
      max-width: 100%;
    }

    a {
      color: var(--orange-deep);
      font-weight: 700;
      text-decoration-thickness: 0.08em;
      text-underline-offset: 0.18em;
    }

    .site-nav {
      position: sticky;
      top: 0;
      z-index: 10;
      border-bottom: 1px solid rgba(230, 223, 211, 0.86);
      background: rgba(252, 246, 237, 0.97);
      backdrop-filter: blur(14px);
    }

    .nav-inner {
      width: min(var(--max), calc(100% - 32px));
      min-height: 88px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      color: var(--ink);
      text-decoration: none;
    }

    .brand-logo {
      width: 92px;
      height: auto;
      display: block;
    }

    .nav-links {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 4px;
    }

    .nav-links a {
      padding: 8px 10px;
      border-radius: 6px;
      color: var(--ink-soft);
      font-size: 0.9rem;
      font-weight: 650;
      text-decoration: none;
    }

    .nav-links a:hover {
      background: var(--surface);
      color: var(--ink);
    }

    .hero {
      --section-img: url("AIcool.webp");
      width: min(var(--max), calc(100% - 32px));
      margin: 0 auto;
      padding: 44px 0 34px;
      display: grid;
      grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
      gap: 32px;
      align-items: center;
    }

    .hero-copy {
      padding: 24px 0;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-height: 58px;
      padding: 0;
      border: 0;
      border-radius: 0;
      background: transparent;
      color: var(--teal);
      font-size: 0.78rem;
      font-weight: 850;
      text-transform: uppercase;
    }

    .eyebrow::before {
      content: "";
      display: grid;
      place-items: center;
      width: 56px;
      height: 56px;
      border: 1px solid var(--line);
      border-radius: 16px;
      background: var(--paper) var(--section-img, url("AIcool.webp")) center / cover no-repeat;
      box-shadow: 0 14px 32px rgba(58, 43, 24, 0.12);
      line-height: 1;
    }

    h1,
    h2,
    h3 {
      margin: 0;
      line-height: 1.08;
      letter-spacing: 0;
    }

    h1 {
      max-width: 760px;
      margin-top: 18px;
      font-size: clamp(3.1rem, 8vw, 6.2rem);
      font-weight: 900;
    }

    .script {
      color: var(--orange);
      font-style: italic;
      font-weight: 760;
    }

    .hero-lead {
      max-width: 680px;
      margin: 22px 0 0;
      color: var(--ink-soft);
      font-size: clamp(1.12rem, 2vw, 1.45rem);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .button {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 16px;
      border-radius: 8px;
      border: 1px solid var(--line-strong);
      color: var(--ink);
      background: var(--paper);
      font-weight: 750;
      text-decoration: none;
    }

    .button.primary {
      border-color: var(--teal);
      background: var(--teal);
      color: white;
    }

    .button.warm {
      border-color: var(--orange);
      background: var(--orange);
      color: white;
    }

    .hero-media {
      position: relative;
      padding: 10px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--paper);
      box-shadow: var(--shadow);
    }

    .hero-media img {
      border-radius: 6px;
      aspect-ratio: 16 / 10;
      object-fit: cover;
      object-position: left center;
    }

    main {
      position: relative;
      isolation: isolate;
      width: min(var(--max), calc(100% - 32px));
      margin: 0 auto;
      padding: 0 0 84px;
    }

    section {
      --section-bg: var(--canvas);
      --section-img: url("AIcool.webp");
      position: relative;
      z-index: 0;
      padding: 82px 0;
      border-top: 0;
    }

    section::before {
      content: "";
      position: absolute;
      z-index: -1;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 100vw;
      transform: translateX(-50%);
      border-top: 1px solid rgba(211, 198, 181, 0.74);
      background: var(--section-bg);
    }

    section > * {
      position: relative;
      z-index: 1;
    }

    section:nth-of-type(4n + 1) {
      --section-bg: #fffdf8;
      --section-img: url("section-event.webp");
    }

    section:nth-of-type(4n + 2) {
      --section-bg: #fff7e8;
      --section-img: url("AIcool.webp");
    }

    section:nth-of-type(4n + 3) {
      --section-bg: #f1faf8;
      --section-img: url("section-human.webp");
    }

    section:nth-of-type(4n) {
      --section-bg: #f7f5ef;
      --section-img: url("section-tools.webp");
    }

    #news {
      --section-bg: #fffaf0;
      --section-img: url("section-event.webp");
    }

    #reperes {
      --section-img: url("section-guide.webp");
    }

    #supports {
      --section-img: url("section-tools.webp");
    }

    .section-head {
      display: grid;
      grid-template-columns: minmax(0, 0.92fr) minmax(280px, 0.42fr);
      gap: 48px;
      align-items: center;
      margin-bottom: 38px;
    }

    h2 {
      max-width: 980px;
      margin-top: 12px;
      font-size: clamp(2.55rem, 5.6vw, 5.35rem);
      font-weight: 900;
      line-height: 0.98;
    }

    h3 {
      font-size: 1.16rem;
      font-weight: 820;
    }

    .lead {
      margin: 0;
      color: var(--muted);
      font-size: clamp(1.05rem, 1.7vw, 1.22rem);
      line-height: 1.55;
    }

    .news-panel {
      padding: 22px;
      border: 1px solid var(--line-strong);
      border-radius: 8px;
      background: var(--paper);
      box-shadow: var(--shadow);
    }

    .news-top {
      display: grid;
      grid-template-columns: minmax(0, 0.82fr) minmax(300px, 0.42fr);
      gap: 24px;
      align-items: start;
    }

    .meta {
      color: var(--muted);
      font-size: 0.92rem;
      font-weight: 650;
    }

    .news-title {
      margin-top: 10px;
      font-size: clamp(1.7rem, 3vw, 2.55rem);
    }

    .quote-card {
      padding: 18px;
      border-left: 6px solid var(--orange);
      background: var(--rose-soft);
      color: var(--ink-soft);
    }

    .quote-card strong {
      display: block;
      margin-bottom: 8px;
      color: var(--ink);
      font-size: 1.02rem;
    }

    .grid {
      display: grid;
      gap: 16px;
    }

    .grid.two {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid.three {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .grid.four {
      grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .card,
    .tile,
    .term {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--paper);
    }

    .card {
      padding: 20px;
    }

    .card p,
    .tile p,
    .term p {
      margin: 8px 0 0;
      color: var(--muted);
    }

    .media-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .media-card {
      display: flex;
      min-height: 100%;
      flex-direction: column;
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--paper);
      color: var(--ink);
      text-decoration: none;
      transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
    }

    .media-card:hover {
      transform: translateY(-2px);
      border-color: var(--line-strong);
      box-shadow: var(--shadow);
    }

    .media-thumb {
      position: relative;
      aspect-ratio: 16 / 9;
      overflow: hidden;
      background: var(--surface);
    }

    .media-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .media-thumb::after {
      content: "Play";
      position: absolute;
      left: 14px;
      bottom: 12px;
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      border-radius: 999px;
      background: rgba(17, 24, 39, 0.9);
      color: white;
      font-size: 0.78rem;
      font-weight: 900;
    }

    .media-body {
      padding: 16px;
    }

    .media-body p {
      margin: 8px 0 0;
      color: var(--muted);
      font-weight: 500;
    }

    .media-note {
      display: inline-flex;
      width: fit-content;
      margin-bottom: 10px;
      padding: 4px 8px;
      border-radius: 999px;
      background: var(--yellow-soft);
      color: #765307;
      font-size: 0.78rem;
      font-weight: 850;
    }

    .card-icon {
      display: grid;
      place-items: center;
      width: 46px;
      height: 46px;
      margin-bottom: 14px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--surface);
      color: var(--ink-soft);
      box-shadow: 0 10px 24px rgba(58, 43, 24, 0.06);
    }

    .card-icon svg {
      width: 25px;
      height: 25px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
    }

    .card-icon.orange {
      background: var(--rose-soft);
      color: var(--orange-deep);
    }

    .card-icon.blue {
      background: var(--blue-soft);
      color: var(--blue);
    }

    .card-icon.green {
      background: var(--green-soft);
      color: var(--green);
    }

    .card-icon.yellow {
      background: var(--yellow-soft);
      color: #7a5400;
    }

    .source-link,
    .source-list a {
      display: inline-flex;
      width: fit-content;
      margin-top: 10px;
      color: var(--teal);
      font-size: 0.78rem;
      font-weight: 850;
      text-transform: uppercase;
      text-decoration: none;
    }

    .source-link:hover,
    .source-list a:hover {
      color: var(--orange-deep);
      text-decoration: underline;
      text-underline-offset: 0.18em;
    }

    .source-list {
      display: flex;
      flex-wrap: wrap;
      gap: 8px 14px;
      margin-top: 12px;
    }

    .stat {
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--paper);
    }

    .stat strong {
      display: block;
      color: var(--teal);
      font-size: clamp(1.7rem, 3.5vw, 2.7rem);
      line-height: 1;
    }

    .stat span {
      display: block;
      margin-top: 10px;
      color: var(--muted);
      font-size: 0.94rem;
    }

    .timeline {
      display: grid;
      grid-template-columns: repeat(5, minmax(0, 1fr));
      gap: 12px;
    }

    .moment {
      padding: 16px;
      border-top: 5px solid var(--teal);
      background: var(--paper);
      border-radius: 8px;
      border-right: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      border-left: 1px solid var(--line);
    }

    .moment time {
      display: block;
      margin-bottom: 8px;
      color: var(--orange);
      font-size: 1.25rem;
      font-weight: 900;
    }

    .tool-row {
      display: grid;
      grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr) minmax(0, 1fr) minmax(170px, 0.4fr) minmax(130px, 0.3fr);
      border: 1px solid var(--line);
      border-bottom: 0;
      background: var(--paper);
    }

    .tool-row:last-child {
      border-bottom: 1px solid var(--line);
    }

    .tool-row > div {
      padding: 14px 16px;
      border-right: 1px solid var(--line);
    }

    .tool-row > div:last-child {
      border-right: 0;
    }

    .tool-head {
      background: var(--surface);
      color: var(--ink);
      font-size: 0.82rem;
      font-weight: 850;
      text-transform: uppercase;
    }

    .table-wrap {
      overflow-x: auto;
    }

    .prompt-box {
      padding: 22px;
      border: 2px solid var(--yellow);
      border-radius: 8px;
      background: #fffaf0;
    }

    .prompt-formula {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin: 18px 0;
    }

    .prompt-step {
      padding: 14px;
      border: 1px dashed #d79b22;
      border-radius: 8px;
      background: white;
      text-align: center;
      font-weight: 800;
    }

    .prompt-example {
      margin: 0;
      padding: 18px;
      border-left: 5px solid var(--orange);
      background: white;
      color: var(--ink-soft);
      font-style: italic;
    }

    .image-strip {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .image-strip figure {
      margin: 0;
      padding: 10px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--paper);
    }

    .image-link {
      display: block;
      position: relative;
      color: inherit;
      text-decoration: none;
    }

    .image-strip img {
      width: 100%;
      border-radius: 6px;
      aspect-ratio: 4 / 5.65;
      object-fit: cover;
      object-position: top center;
      border: 1px solid var(--line);
    }

    .image-link::after {
      content: "Ouvrir en grand";
      position: absolute;
      right: 10px;
      bottom: 10px;
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(17, 24, 39, 0.86);
      color: white;
      font-size: 0.82rem;
      font-weight: 800;
    }

    .image-link:hover::after {
      background: var(--orange);
    }

    figcaption {
      margin-top: 10px;
      color: var(--muted);
      font-size: 0.9rem;
    }

    .term {
      padding: 16px;
    }

    .term strong {
      display: block;
      color: var(--ink);
    }

    .download-band {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 24px;
      border-radius: 8px;
      background: var(--ink);
      color: white;
    }

    .download-band p {
      margin: 6px 0 0;
      color: rgba(255, 255, 255, 0.76);
    }

    .download-band a {
      border-color: white;
      background: white;
      color: var(--ink);
    }

    footer {
      width: min(var(--max), calc(100% - 32px));
      margin: 0 auto;
      padding: 0 0 42px;
      color: var(--muted);
      font-size: 0.92rem;
    }

    @media (max-width: 960px) {
      .hero,
      .section-head,
      .news-top,
      .grid.two,
      .grid.three,
      .grid.four,
      .media-grid,
      .image-strip {
        grid-template-columns: 1fr;
      }

      .timeline {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .prompt-formula {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .tool-row {
        min-width: 1020px;
      }

      .section-head {
        gap: 18px;
        align-items: start;
      }
    }

    @media (max-width: 700px) {
      .nav-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 12px 0;
      }

      .nav-links {
        justify-content: flex-start;
      }

      .hero {
        padding-top: 24px;
      }

      .brand-logo {
        width: 78px;
      }

      .eyebrow {
        min-height: 46px;
        gap: 10px;
      }

      .eyebrow::before {
        width: 44px;
        height: 44px;
        border-radius: 12px;
      }

      h2 {
        font-size: clamp(2.25rem, 14vw, 3.35rem);
      }

      section {
        padding: 64px 0;
      }

      .timeline,
      .prompt-formula {
        grid-template-columns: 1fr;
      }

      section {
        padding: 42px 0;
      }
    }

    /* ===== Navigation avec sous-menus (ajout multi-pages) ===== */
    .nav-links .menu {
      position: relative;
    }

    .nav-links .menu > a {
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .nav-links .menu > a::after {
      content: "";
      width: 6px;
      height: 6px;
      border-right: 2px solid currentColor;
      border-bottom: 2px solid currentColor;
      transform: translateY(-2px) rotate(45deg);
      opacity: 0.6;
    }

    .submenu {
      position: absolute;
      top: calc(100% + 6px);
      left: 0;
      min-width: 190px;
      display: grid;
      gap: 2px;
      padding: 8px;
      border: 1px solid var(--line-strong);
      border-radius: 10px;
      background: var(--paper);
      box-shadow: var(--shadow);
      opacity: 0;
      visibility: hidden;
      transform: translateY(-6px);
      transition: opacity 140ms ease, transform 140ms ease, visibility 140ms;
      z-index: 20;
    }

    .nav-links .menu:hover .submenu,
    .nav-links .menu:focus-within .submenu {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .submenu a {
      padding: 8px 10px;
      border-radius: 6px;
      color: var(--ink-soft);
      font-size: 0.9rem;
      font-weight: 650;
      white-space: nowrap;
      text-decoration: none;
    }

    .submenu a:hover {
      background: var(--surface);
      color: var(--ink);
    }

    .submenu a.current {
      background: var(--teal-soft);
      color: var(--teal);
    }

    /* ===== En-tête de page News ===== */
    .page-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 5px 12px;
      border: 1px solid var(--line-strong);
      border-radius: 999px;
      background: var(--paper-warm);
      color: var(--teal);
      font-size: 0.76rem;
      font-weight: 850;
      text-transform: uppercase;
      letter-spacing: 0.02em;
    }

    .news-hero {
      width: min(var(--max), calc(100% - 32px));
      margin: 0 auto;
      padding: 40px 0 8px;
    }

    .news-hero h1 {
      max-width: 900px;
      font-size: clamp(2.6rem, 6vw, 4.6rem);
      line-height: 1.02;
    }

    .news-hero .hero-lead {
      max-width: 760px;
    }

    /* Bandeau "à lire ailleurs" */
    .read-band {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 22px 24px;
      border: 1px solid var(--line-strong);
      border-left: 6px solid var(--teal);
      border-radius: 8px;
      background: var(--teal-soft);
    }

    .read-band .meta {
      color: var(--teal);
    }

    .read-band h3 {
      margin-top: 4px;
    }

    /* Fil de sujets numérotés */
    .topic {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      gap: 18px;
      align-items: start;
    }

    .topic-num {
      display: grid;
      place-items: center;
      width: 46px;
      height: 46px;
      border-radius: 12px;
      background: var(--ink);
      color: white;
      font-size: 1.3rem;
      font-weight: 900;
    }

    .archive-empty {
      padding: 18px 22px;
      border: 1px dashed var(--line-strong);
      border-radius: 8px;
      color: var(--muted);
      background: var(--surface);
    }

    @media (max-width: 700px) {
      .submenu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: 0;
        padding: 4px 0 4px 14px;
        min-width: 0;
      }

      .nav-links .menu > a::after {
        display: none;
      }
    }

    /* ===== Glossaire : contrôles de tri + niveaux ===== */
    .glossary-controls {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      margin-bottom: 22px;
    }

    .glossary-controls .label {
      color: var(--muted);
      font-size: 0.85rem;
      font-weight: 700;
    }

    .sort-btn {
      min-height: 38px;
      padding: 0 15px;
      border-radius: 999px;
      border: 1px solid var(--line-strong);
      background: var(--paper);
      color: var(--ink-soft);
      font-family: inherit;
      font-size: 0.85rem;
      font-weight: 750;
      cursor: pointer;
      transition: border-color 140ms ease, background 140ms ease, color 140ms ease;
    }

    .sort-btn:hover {
      border-color: var(--teal);
    }

    .sort-btn[aria-pressed="true"] {
      border-color: var(--teal);
      background: var(--teal);
      color: #fff;
    }

    .term-tier {
      display: none;
      margin-top: 10px;
      font-size: 0.7rem;
      font-weight: 850;
      text-transform: uppercase;
      letter-spacing: 0.03em;
    }

    #glossaire-grid.by-rank .term-tier {
      display: inline-block;
    }

    .term-tier.t1 { color: var(--green); }
    .term-tier.t2 { color: var(--blue); }
    .term-tier.t3 { color: var(--orange-deep); }