:root {
      color-scheme: dark;
      --bg: #0f162d;
      --surface: #161f3f;
      --surface-alt: #1d2849;
      --text: #eef2ff;
      --muted: #9aa7c1;
      --accent: #ff5c35;
      --accent-soft: rgba(255, 92, 53, 0.16);
      --border: rgba(255, 255, 255, 0.08);
      --radius: 24px;
      font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      min-height: 100vh;
      background: radial-gradient(circle at top left, rgba(255, 92, 53, 0.12), transparent 25%),
        linear-gradient(180deg, #0d1326 0%, #10172f 55%, #11182f 100%);
      color: var(--text);
      line-height: 1.6;
    }

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

    a {
      color: inherit;
      text-decoration: none;
    }

    .page {
      width: 100%;
      max-width: none;
      margin: 0;
      padding: 20px 24px 40px;
    }

    .navbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: nowrap;
      gap: 12px;
      width: 100%;
      background: rgba(19, 27, 52, 0.95);
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: 32px;
      padding: 14px 22px;
      backdrop-filter: blur(14px);
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 14px;
    }

    .brand-logo {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      display: grid;
      place-items: center;
      background: linear-gradient(135deg, var(--accent), #d13a1a);
      color: #fff;
      font-weight: 800;
      box-shadow: 0 18px 40px rgba(255, 92, 53, 0.18);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .brand-text .name {
      font-size: 1rem;
      font-weight: 700;
      letter-spacing: 0.04em;
    }

    .brand-text .tagline {
      font-size: 0.82rem;
      color: var(--muted);
    }

    .nav-links {
      display: flex;
      flex-wrap: nowrap;
      align-items: center;
      gap: 10px;
      padding: 0;
      margin: 0;
      list-style: none;
      font-size: 0.9rem;
      overflow-x: auto;
      white-space: nowrap;
    }

    .nav-links li {
      margin: 0;
    }

    .nav-links a {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      color: var(--muted);
      padding: 9px 14px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.06);
      font-size: 0.92rem;
      transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
    }

    .nav-links a:hover {
      background: rgba(255, 92, 53, 0.14);
      color: #fff;
      transform: translateY(-1px);
    }

    .nav-links a.active {
      background: var(--accent);
      color: #fff;
    }

    .nav-links a i {
      width: 18px;
      text-align: center;
      color: var(--accent);
      font-family: "Font Awesome 6 Free";
      font-weight: 900;
    }

    .nav-links a i {
      width: 18px;
      text-align: center;
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-shrink: 0;
    }

    .search-bar {
      position: relative;
      display: flex;
      align-items: center;
      min-width: 260px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 999px;
      padding: 10px 42px 10px 14px;
    }

    .search-bar input {
      width: 100%;
      border: none;
      outline: none;
      background: transparent;
      color: var(--text);
      font-size: 0.95rem;
    }

    .search-bar .search-icon {
      position: absolute;
      right: 15px;
      color: #9ca3af;
      font-size: 18px;
      cursor: pointer;
    }

    .user-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #232f50;
      border: 1px solid rgba(255, 255, 255, 0.12);
      display: grid;
      place-items: center;
      color: #fff;
      font-size: 1rem;
      cursor: pointer;
    }

    .submenu {
      margin-top: 18px;
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding: 14px 16px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 20px;
      overflow-x: auto;
    }

    .submenu a {
      padding: 10px 16px;
      border-radius: 999px;
      background: rgba(255, 255, 255, 0.06);
      color: var(--text);
      font-size: 0.92rem;
      white-space: nowrap;
      transition: background 0.2s ease, color 0.2s ease;
    }

    .submenu a:hover,
    .submenu a.active {
      background: var(--accent-soft);
      color: #fff;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.8fr 1fr;
      gap: 24px;
      margin-top: 28px;
    }

    .hero {
      padding: 32px;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius);
      position: relative;
      overflow: hidden;
    }

    .hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at top left, rgba(255, 92, 53, 0.14), transparent 24%),
        radial-gradient(circle at bottom right, rgba(255, 92, 53, 0.07), transparent 18%);
      pointer-events: none;
    }

    .hero h1 {
      margin: 0 0 16px;
      font-size: clamp(2.2rem, 2.6vw, 3.4rem);
      line-height: 1.02;
      letter-spacing: -0.04em;
    }

    .hero h1 .accent {
      color: var(--accent);
    }

    .hero p {
      margin: 0 0 20px;
      color: var(--muted);
      text-align: justify;
    }

    .hero .highlight {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      padding: 12px 16px;
      border-radius: 999px;
      background: rgba(255, 92, 53, 0.12);
      color: #fff;
      font-size: 0.92rem;
      margin-bottom: 24px;
    }

    /* ───────── Bandeau partenaires institutionnels ───────── */
    .partners-bar {
      display: flex;
      align-items: center;
      gap: 18px;
      padding: 14px 18px;
      margin-bottom: 22px;
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      flex-wrap: wrap;
    }
    .partners-label {
      font-size: 0.72rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      color: var(--muted);
      font-weight: 600;
      flex-shrink: 0;
    }
    .partners-logos {
      display: flex;
      align-items: center;
      gap: 22px;
      flex-wrap: wrap;
    }
    .partner-logo {
      height: 56px;
      width: auto;
      object-fit: contain;
      filter: brightness(1.08);
      transition: transform .2s ease, filter .2s ease;
    }
    .partner-logo:hover { transform: scale(1.04); }
    .partners-sep {
      width: 1px;
      height: 36px;
      background: rgba(255, 255, 255, 0.18);
    }
    @media (max-width: 600px) {
      .partners-bar { justify-content: center; text-align: center; }
      .partner-logo { height: 44px; }
      .partners-sep { height: 28px; }
    }

    .hero .stats {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin-top: 28px;
    }

    .hero .stat-card {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 18px;
      padding: 18px;
    }

    .hero .stat-card strong {
      display: block;
      font-size: 1.45rem;
      color: #fff;
    }

    .hero .stat-card span {
      color: var(--muted);
      font-size: 0.9rem;
    }

    .widgets {
      display: grid;
      gap: 24px;
    }

    .card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: 28px;
      overflow: hidden;
    }

    .card header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 22px 24px;
      background: linear-gradient(180deg, rgba(255, 92, 53, 0.18), transparent 90%);
    }

    .card header h2 {
      margin: 0;
      font-size: 1.05rem;
      letter-spacing: 0.01em;
    }

    .card header a {
      font-size: 0.85rem;
      color: var(--accent);
    }

    .publication-list,
    .comment-list {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .publication-item,
    .comment-item {
      display: grid;
      grid-template-columns: 88px 1fr;
      gap: 14px;
      padding: 18px 22px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    }

    .publication-item:last-child,
    .comment-item:last-child {
      border-bottom: none;
    }

    .publication-item img {
      width: 100%;
      height: 88px;
      object-fit: cover;
      border-radius: 18px;
      filter: saturate(0.8) contrast(0.95);
    }

    .publication-meta {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      gap: 8px;
    }

    .pub-thumb-link img{
      transition: transform .2s ease, filter .2s ease;
    }
    .pub-thumb-link:hover img{
      transform: scale(1.05);
      filter: brightness(1.1) saturate(1.1);
    }
    .publication-meta a{
      text-decoration: none;
      color: inherit;
    }
    .publication-meta a:hover strong{
      color: var(--accent);
    }
    .publication-item{
      overflow: hidden;
    }
    .publication-meta strong {
      font-size: 0.95rem;
      margin: 0;
      color: #fff;
      transition: color .15s;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .publication-meta small {
      color: var(--muted);
      font-size: 0.84rem;
    }

    .publication-meta .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.78rem;
      color: var(--accent);
    }

    .comment-item {
      grid-template-columns: 1fr;
      background: rgba(255, 255, 255, 0.02);
      border-radius: 18px;
    }

    .comment-item p {
      margin: 0 0 8px;
      color: var(--text);
      font-size: 0.95rem;
    }

    .comment-item small {
      color: var(--muted);
      font-size: 0.82rem;
    }

    .comment-author {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 8px;
    }

    .comment-author strong {
      font-size: 0.95rem;
    }

    .highlight-panel {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 18px 22px;
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      color: var(--muted);
    }

    .highlight-panel span {
      font-size: 0.9rem;
      color: var(--text);
    }

    /* ===== CTA ===== */
    .hero-cta{
      display:flex; gap:12px; flex-wrap:wrap; margin:22px 0 8px;
    }
    .cta-btn{
      display:inline-flex; align-items:center; gap:9px;
      padding:13px 24px; border-radius:999px;
      font-size:0.95rem; font-weight:700;
      text-decoration:none; transition:transform .15s, box-shadow .15s;
    }
    .cta-btn:hover{ transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,0.3); }
    .cta-primary{
      background:var(--accent); color:#fff;
      box-shadow:0 4px 18px rgba(255,92,53,0.35);
    }
    .cta-secondary{
      background:rgba(255,255,255,0.08); color:#fff;
      border:1px solid rgba(255,255,255,0.15);
    }

    /* ===== COMMENT ÇA MARCHE ===== */
    .section-title{
      font-size:1.5rem; color:#fff; margin:0 0 8px;
      display:flex; align-items:center; gap:10px;
    }
    .section-title i{ color:var(--accent); }
    .section-sub{
      color:var(--muted); font-size:0.95rem; margin:0 0 32px;
    }
    .how-section{
      margin-top:52px;
      padding:40px 32px;
      background:rgba(255,255,255,0.02);
      border:1px solid rgba(255,255,255,0.07);
      border-radius:28px;
    }
    .steps-grid{
      display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-bottom:32px;
    }
    .step-card{
      background:rgba(255,255,255,0.03);
      border:1px solid rgba(255,255,255,0.08);
      border-radius:22px; padding:28px 24px;
      position:relative; overflow:hidden;
      transition:transform .2s, border-color .2s;
    }
    .step-card:hover{ transform:translateY(-4px); border-color:rgba(255,92,53,0.3); }
    .step-num{
      position:absolute; top:18px; right:20px;
      font-size:2.8rem; font-weight:800;
      color:rgba(255,92,53,0.12); line-height:1;
    }
    .step-icon{
      width:52px; height:52px; border-radius:16px;
      background:rgba(255,92,53,0.12);
      display:grid; place-items:center;
      font-size:1.3rem; color:var(--accent); margin-bottom:18px;
    }
    .step-card h3{ margin:0 0 10px; font-size:1rem; color:#fff; }
    .step-card p{ margin:0; color:var(--muted); font-size:0.88rem; line-height:1.6; }
    .how-cta{ text-align:center; }

    /* ===== À PROPOS ===== */
    .about-section{
      margin-top:40px;
      padding:40px 32px;
      background:rgba(255,255,255,0.02);
      border:1px solid rgba(255,255,255,0.07);
      border-radius:28px;
    }
    .about-grid{
      display:grid; grid-template-columns:1.2fr 1fr; gap:40px; align-items:start;
    }
    .about-badge{
      display:inline-flex; align-items:center; gap:8px;
      padding:7px 14px; border-radius:999px;
      background:rgba(255,92,53,0.12); color:var(--accent);
      font-size:0.82rem; font-weight:700; margin-bottom:16px;
    }
    .about-text h2{ margin:0 0 16px; font-size:1.4rem; color:#fff; }
    .about-text p{ color:var(--muted); font-size:0.92rem; line-height:1.7; margin:0 0 14px; }
    .about-text strong{ color:#fff; }
    .about-tags{
      display:flex; flex-wrap:wrap; gap:8px; margin-top:20px;
    }
    .about-tags span{
      display:flex; align-items:center; gap:6px;
      padding:7px 14px; border-radius:999px;
      background:rgba(255,255,255,0.06); color:var(--text);
      font-size:0.82rem;
    }
    .about-tags span i{ color:var(--accent); }
    .team-cards{ display:flex; flex-direction:column; gap:14px; }
    .team-card{
      display:flex; align-items:center; gap:16px;
      padding:16px 20px; border-radius:18px;
      background:rgba(255,255,255,0.04);
      border:1px solid rgba(255,255,255,0.08);
    }
    .team-avatar{
      width:48px; height:48px; border-radius:14px;
      background:rgba(255,92,53,0.15);
      display:grid; place-items:center;
      font-size:1.2rem; color:var(--accent); flex-shrink:0;
    }
    .team-avatar.encadrant{ background:rgba(99,102,241,0.15); color:#818cf8; }
    .team-info{ display:flex; flex-direction:column; gap:3px; }
    .team-info strong{ color:#fff; font-size:0.95rem; }
    .team-info span{ color:var(--muted); font-size:0.82rem; }
    .team-role{ color:var(--accent) !important; font-size:0.78rem !important; }
    .about-tech{
      padding:16px 20px; border-radius:18px;
      background:rgba(255,255,255,0.03);
      border:1px solid rgba(255,255,255,0.08);
    }
    .tech-label{ font-size:0.78rem; font-weight:700; color:var(--muted); text-transform:uppercase; letter-spacing:.05em; display:block; margin-bottom:10px; }
    .tech-pills{ display:flex; flex-wrap:wrap; gap:7px; }
    .tech-pills span{
      padding:5px 12px; border-radius:999px;
      background:rgba(255,255,255,0.07); color:var(--text);
      font-size:0.78rem; font-weight:600;
    }

    /* ===== SEARCH RESULTS DROPDOWN ===== */
    .search-dropdown{
      position:absolute; top:calc(100% + 8px); left:0; right:0;
      background:#1d2849; border:1px solid rgba(255,255,255,.12);
      border-radius:16px; box-shadow:0 12px 32px rgba(0,0,0,.4);
      z-index:9999; overflow:hidden; display:none;
    }
    .search-dropdown.visible{ display:block; }
    .search-result-group{ padding:8px 10px 4px; font-size:.72rem; font-weight:700;
      color:var(--muted); text-transform:uppercase; letter-spacing:.06em; }
    .search-result-item{
      display:flex; align-items:center; gap:10px;
      padding:9px 14px; cursor:pointer; font-size:.88rem; color:var(--text);
      transition:background .15s; border-radius:10px; margin:2px 6px;
    }
    .search-result-item:hover{ background:rgba(255,92,53,.12); color:#fff; }
    .search-result-item i{ width:16px; text-align:center; color:var(--accent); }

    /* ===== CHARTS SECTION ===== */
    .charts-section{
      margin-top:48px; padding:40px 32px;
      background:rgba(255,255,255,.02);
      border:1px solid rgba(255,255,255,.07);
      border-radius:28px;
    }
    .charts-section .section-header{
      display:flex; align-items:flex-start; justify-content:space-between;
      flex-wrap:wrap; gap:16px; margin-bottom:28px;
    }
    .chart-tabs{
      display:flex; gap:6px;
    }
    .chart-tab{
      border:none; border-radius:999px; padding:7px 16px;
      font-size:.82rem; font-weight:700; cursor:pointer;
      background:rgba(255,255,255,.07); color:var(--muted);
      transition:background .15s, color .15s;
    }
    .chart-tab:hover{ color:#fff; background:rgba(255,255,255,.13); }
    .chart-tab.active{ background:var(--accent); color:#fff; }
    .charts-grid{
      display:grid; grid-template-columns:1.4fr 1fr; gap:24px;
    }
    .chart-card{
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      border-radius:22px; padding:24px;
    }
    .chart-card-title{
      font-size:.88rem; font-weight:700; color:var(--muted);
      text-transform:uppercase; letter-spacing:.05em;
      margin-bottom:18px; display:flex; align-items:center; gap:8px;
    }
    .chart-card-title i{ color:var(--accent); }
    .chart-card canvas{ max-height:300px; }
    .chart-model-toggle{
      display:flex; gap:6px; margin-bottom:16px;
    }
    .chart-model-btn{
      border:none; border-radius:999px; padding:5px 13px;
      font-size:.78rem; font-weight:700; cursor:pointer;
      background:rgba(255,255,255,.07); color:var(--muted);
      transition:background .15s, color .15s;
    }
    .chart-model-btn.active{ background:var(--accent); color:#fff; }
    .chart-summary{
      display:flex; gap:16px; margin-top:18px; flex-wrap:wrap;
    }
    .chart-summary-item{
      flex:1; min-width:100px;
      background:rgba(255,255,255,.04);
      border:1px solid rgba(255,255,255,.07);
      border-radius:14px; padding:14px; text-align:center;
    }
    .chart-summary-item .val{ font-size:1.1rem; font-weight:800; color:#fff; display:block; }
    .chart-summary-item .lbl{ font-size:.74rem; color:var(--muted); display:block; margin-top:3px; }

    /* ===== DATASETS SECTION ===== */
    .datasets-section{
      margin-top:48px; padding:40px 32px;
      background:rgba(255,255,255,.02);
      border:1px solid rgba(255,255,255,.07);
      border-radius:28px;
    }
    .datasets-grid{
      display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:24px;
    }
    .dataset-card{
      background:rgba(255,255,255,.03);
      border:1px solid rgba(255,255,255,.08);
      border-radius:18px; padding:22px 18px;
      display:flex; flex-direction:column; gap:12px;
      transition:transform .2s, border-color .2s;
    }
    .dataset-card:hover{ transform:translateY(-4px); border-color:rgba(255,92,53,.3); }
    .dataset-icon{
      width:46px; height:46px; border-radius:14px;
      background:rgba(255,92,53,.12); display:grid; place-items:center;
      font-size:1.2rem; color:var(--accent);
    }
    .dataset-name{ font-size:.95rem; font-weight:700; color:#fff; }
    .dataset-desc{ font-size:.82rem; color:var(--muted); line-height:1.5; }
    .dataset-meta{
      display:flex; flex-wrap:wrap; gap:6px; margin-top:4px;
    }
    .dataset-tag{
      padding:3px 10px; border-radius:999px;
      background:rgba(255,255,255,.07); color:var(--text);
      font-size:.72rem; font-weight:600;
    }
    .dataset-size{
      font-size:.74rem; color:var(--muted); margin-top:4px;
    }
    .dataset-btn{
      display:inline-flex; align-items:center; justify-content:center; gap:7px;
      padding:9px 14px; border-radius:999px; margin-top:auto;
      font-size:.8rem; font-weight:700; text-decoration:none;
      background:rgba(255,255,255,.07); color:#fff;
      border:1px solid rgba(255,255,255,.12);
      transition:background .15s, border-color .15s;
    }
    .dataset-btn:hover{ background:var(--accent); border-color:var(--accent); }
    .dataset-btn i{ font-size:.78rem; }

    /* ===== FOOTER ===== */
    .site-footer{
      background:#0a1020;
      border-top:1px solid rgba(255,255,255,0.07);
      margin-top:52px; padding:48px 24px 0;
    }
    .footer-grid{
      display:grid; grid-template-columns:2fr 1fr 1fr 1fr;
      gap:32px; max-width:1400px; margin:0 auto 40px;
    }
    .footer-logo{
      width:46px; height:46px; border-radius:14px;
      background:linear-gradient(135deg,var(--accent),#d13a1a);
      display:grid; place-items:center;
      font-weight:800; color:#fff; font-size:1rem;
      margin-bottom:14px;
    }
    .footer-brand p{ color:var(--muted); font-size:0.88rem; line-height:1.6; margin:0 0 16px; }
    .footer-socials{ display:flex; gap:10px; }
    .footer-socials a{
      width:36px; height:36px; border-radius:10px;
      background:rgba(255,255,255,0.07);
      display:grid; place-items:center;
      color:var(--muted); font-size:0.95rem;
      transition:background .15s, color .15s;
    }
    .footer-socials a:hover{ background:var(--accent); color:#fff; }
    .footer-col h4{
      color:#fff; font-size:0.92rem; margin:0 0 16px;
      text-transform:uppercase; letter-spacing:.05em;
    }
    .footer-col ul{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
    .footer-col ul li a{
      color:var(--muted); font-size:0.88rem;
      display:flex; align-items:center; gap:8px;
      transition:color .15s;
    }
    .footer-col ul li a:hover{ color:#fff; }
    .footer-col ul li a i{ width:14px; color:var(--accent); font-size:0.78rem; }
    .footer-contact li{
      color:var(--muted); font-size:0.88rem;
      display:flex; align-items:center; gap:8px;
    }
    .footer-contact li i{ color:var(--accent); width:14px; }
    .footer-badge{
      margin-top:14px; display:inline-flex; align-items:center; gap:7px;
      padding:7px 13px; border-radius:999px;
      background:rgba(255,92,53,0.1); color:var(--accent);
      font-size:0.78rem; font-weight:600;
    }
    .footer-bottom{
      border-top:1px solid rgba(255,255,255,0.06);
      padding:20px 0; max-width:1400px; margin:0 auto;
      display:flex; justify-content:space-between; align-items:center;
      flex-wrap:wrap; gap:10px;
      color:var(--muted); font-size:0.82rem;
    }

    /* ===== ARTICLES ===== */
    .articles-section{ margin-top:48px; }
    .art-header{
      display:flex; align-items:flex-start; justify-content:space-between;
      flex-wrap:wrap; gap:16px; margin-bottom:20px;
    }
    .art-search-wrap{
      position:relative; min-width:280px;
    }
    .art-search-icon{
      position:absolute; left:14px; top:50%; transform:translateY(-50%);
      color:var(--muted); font-size:0.85rem; pointer-events:none;
    }
    .art-search-input{
      width:100%; padding:10px 14px 10px 38px;
      border-radius:999px; border:1px solid rgba(255,255,255,0.12);
      background:rgba(255,255,255,0.06); color:#fff;
      font-size:0.88rem; outline:none;
    }
    .art-search-input::placeholder{ color:var(--muted); }
    .art-filters{
      display:flex; align-items:center; gap:8px; flex-wrap:wrap;
      margin-bottom:20px;
    }
    .art-filter-label{ font-size:0.8rem; color:var(--muted); font-weight:600; }
    .art-chip{
      border:none; border-radius:999px; padding:6px 14px;
      background:rgba(255,255,255,0.07); color:var(--muted);
      font-size:0.8rem; font-weight:600; cursor:pointer;
      transition:background .15s, color .15s;
    }
    .art-chip:hover{ background:rgba(255,255,255,0.13); color:#fff; }
    .art-chip.active{ background:var(--accent); color:#fff; }
    .art-chip span{
      background:rgba(255,255,255,0.2); border-radius:999px;
      padding:1px 6px; font-size:0.72rem; margin-left:4px;
    }
    .art-count{ margin-left:auto; font-size:0.8rem; color:var(--muted); }

    .art-list{ display:flex; flex-direction:column; gap:12px; }
    .art-item{
      display:flex; gap:16px; align-items:flex-start;
      padding:20px 22px;
      background:rgba(255,255,255,0.03);
      border:1px solid rgba(255,255,255,0.08);
      border-radius:16px;
      transition:border-color .2s, box-shadow .2s, background .2s;
    }
    .art-item:hover{
      border-color:rgba(255,92,53,0.25);
      background:rgba(255,255,255,0.045);
      box-shadow:0 4px 24px rgba(0,0,0,0.2);
    }
    .art-item.hidden{ display:none; }
    .art-thumb{
      flex-shrink:0;
      width:130px;
      height:90px;
      border-radius:12px;
      object-fit:cover;
      filter:saturate(0.85) brightness(0.9);
      transition:filter .2s, transform .2s;
      align-self:center;
    }
    .art-item:hover .art-thumb{
      filter:saturate(1.1) brightness(1.05);
      transform:scale(1.03);
    }

    .art-source-badge{
      flex-shrink:0; padding:4px 10px; border-radius:8px;
      font-size:0.7rem; font-weight:800; letter-spacing:0.03em;
      text-align:center; min-width:72px; margin-top:4px;
    }
    .art-source-badge.sd  { background:#e8f4fd; color:#0077b5; }
    .art-source-badge.nat { background:#e8f7ee; color:#1a7f4b; }
    .art-source-badge.sage{ background:#fff3e0; color:#e65100; }
    .art-source-badge.front{ background:#e8eaf6; color:#3949ab; }
    .art-source-badge.spr { background:#fce4ec; color:#c62828; }
    .art-source-badge.scirp{ background:#f3e5f5; color:#7b1fa2; }
    .art-source-badge.ipcc-b{ background:#e0f2f1; color:#00695c; }

    .art-main{ flex:1; display:flex; flex-direction:column; gap:7px; }
    .art-title{
      font-size:0.98rem; font-weight:700; color:#93c5fd;
      text-decoration:none; line-height:1.45;
      transition:color .15s;
    }
    .art-title:hover{ color:#60a5fa; text-decoration:underline; }
    .art-authors{ font-size:0.83rem; color:var(--muted); }
    .art-meta{
      display:flex; align-items:center; flex-wrap:wrap; gap:12px;
      font-size:0.8rem;
    }
    .art-journal{ color:#86efac; display:flex; align-items:center; gap:5px; }
    .art-year{
      background:rgba(255,255,255,0.08); border-radius:6px;
      padding:2px 8px; color:var(--text); font-weight:600;
    }
    .art-doi{ color:var(--muted); font-size:0.75rem; display:flex; align-items:center; gap:5px; }
    .art-abstract{
      font-size:0.84rem; color:var(--muted); line-height:1.6; margin:0;
    }
    .art-footer{
      display:flex; align-items:center; justify-content:space-between;
      flex-wrap:wrap; gap:10px; margin-top:4px;
    }
    .art-kw{ display:flex; flex-wrap:wrap; gap:6px; }
    .art-kw span{
      padding:3px 10px; border-radius:999px;
      background:rgba(255,92,53,0.1); color:var(--accent);
      font-size:0.72rem; font-weight:700;
    }
    .art-actions{ display:flex; gap:8px; }
    .art-btn{
      display:inline-flex; align-items:center; gap:6px;
      padding:7px 14px; border-radius:999px;
      font-size:0.78rem; font-weight:700; text-decoration:none;
      transition:background .15s, color .15s;
    }
    .art-btn-primary{
      background:rgba(147,197,253,0.12); color:#93c5fd;
    }
    .art-btn-primary:hover{ background:#93c5fd; color:#0f172a; }
    .art-btn-pdf{
      background:rgba(239,68,68,0.12); color:#f87171;
    }
    .art-btn-pdf:hover{ background:#ef4444; color:#fff; }
    .art-more{ text-align:center; margin-top:24px; }

    @media (max-width: 980px) {
      .steps-grid{ grid-template-columns:1fr; }
      .about-grid{ grid-template-columns:1fr; }
      .footer-grid{ grid-template-columns:1fr 1fr; }
      .hero-grid{ grid-template-columns:1fr; }
      .charts-grid{ grid-template-columns:1fr; }
      .datasets-grid{ grid-template-columns:1fr 1fr; }
      .hero .stats{ grid-template-columns:repeat(2,1fr); }
      .nav-links{ order:3; width:100%; }
      .navbar{ flex-direction:column; align-items:stretch; }
      .search-bar{ min-width:100%; }
    }

    /* ===== LANGUAGE TOGGLE ===== */
    .lang-toggle{
      display:flex; align-items:center; gap:2px;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.14);
      border-radius:999px; padding:4px 5px;
      flex-shrink:0;
    }
    .lang-btn{
      border:none; background:none; cursor:pointer;
      color:var(--muted); font-size:.78rem; font-weight:800;
      padding:4px 11px; border-radius:999px;
      transition:background .15s, color .15s;
      letter-spacing:.05em; font-family:inherit;
    }
    .lang-btn:hover{ color:#fff; }
    .lang-btn.active{ background:var(--accent); color:#fff; }

    @media (max-width: 720px) {
      .navbar{ padding:16px; }
      .nav-links{ display:none; }
      .submenu{ padding:12px 12px; }
      .hero{ padding:24px; }
      .publication-item, .comment-item{ grid-template-columns:1fr; }
      .publication-item img{ height:140px; }
      .datasets-grid{ grid-template-columns:1fr; }
      .charts-section, .datasets-section{ padding:24px 18px; }
    }

    /* ===== THEME TOGGLE BUTTON ===== */
    .theme-toggle{
      width:38px; height:38px; border-radius:999px;
      display:grid; place-items:center; cursor:pointer;
      background:rgba(255,255,255,.06);
      border:1px solid rgba(255,255,255,.14);
      color:var(--muted);
      font-size:.95rem; flex-shrink:0;
      transition:background .15s, color .15s, transform .25s;
    }
    .theme-toggle:hover{ color:#fff; background:rgba(255,255,255,.12); transform:rotate(20deg); }

    /* ===== LIGHT THEME ===== */
    :root[data-theme="light"]{
      color-scheme:light;
      --bg:#f5f7fb;
      --surface:#ffffff;
      --surface-alt:#eef2f9;
      --text:#1a2238;
      --muted:#5b6883;
      --accent:#ff5c35;
      --accent-soft:rgba(255,92,53,0.12);
      --border:rgba(15,23,42,0.08);
    }
    [data-theme="light"] body{
      background:radial-gradient(circle at top left, rgba(255,92,53,0.08), transparent 28%),
        linear-gradient(180deg,#f4f6fc 0%, #f8fafd 55%, #f5f7fb 100%);
      color:var(--text);
    }

    /* Navbar */
    [data-theme="light"] .navbar{
      background:rgba(255,255,255,0.95);
      border-color:rgba(15,23,42,0.08);
      box-shadow:0 4px 18px rgba(15,23,42,0.05);
    }
    [data-theme="light"] .nav-links a{
      background:rgba(15,23,42,0.04);
      color:var(--muted);
    }
    [data-theme="light"] .nav-links a:hover{
      background:rgba(255,92,53,0.12);
      color:#1a2238;
    }
    [data-theme="light"] .nav-links a.active{ color:#fff; }

    [data-theme="light"] .search-bar{
      background:rgba(15,23,42,0.04);
      border-color:rgba(15,23,42,0.08);
    }
    [data-theme="light"] .search-bar input{ color:var(--text); }
    [data-theme="light"] .search-bar input::placeholder{ color:var(--muted); }
    [data-theme="light"] .search-bar .search-icon{ color:var(--muted); }

    [data-theme="light"] .user-avatar{
      background:#eef2f9;
      border-color:rgba(15,23,42,0.08);
      color:#1a2238;
    }

    [data-theme="light"] .submenu{
      background:rgba(15,23,42,0.03);
      border-color:rgba(15,23,42,0.06);
    }
    [data-theme="light"] .submenu a{
      background:#ffffff;
      color:var(--text);
      border:1px solid rgba(15,23,42,0.06);
    }
    [data-theme="light"] .submenu a:hover,
    [data-theme="light"] .submenu a.active{
      background:var(--accent-soft);
      color:var(--accent);
    }

    /* Hero & cards */
    [data-theme="light"] .hero,
    [data-theme="light"] .card{
      background:#ffffff;
      border-color:rgba(15,23,42,0.08);
      box-shadow:0 8px 24px rgba(15,23,42,0.04);
    }
    [data-theme="light"] .hero::before{
      background:radial-gradient(circle at top left, rgba(255,92,53,0.08), transparent 24%),
        radial-gradient(circle at bottom right, rgba(255,92,53,0.04), transparent 18%);
    }
    [data-theme="light"] .hero h1{ color:#1a2238; }
    [data-theme="light"] .hero .highlight{
      color:#b14225; background:rgba(255,92,53,0.1);
    }
    [data-theme="light"] .hero .stat-card{
      background:#f7f9fd;
      border-color:rgba(15,23,42,0.06);
    }
    [data-theme="light"] .hero .stat-card strong{ color:#1a2238; }
    [data-theme="light"] .partners-bar{
      background:#f7f9fd;
      border-color:rgba(15,23,42,0.06);
    }
    [data-theme="light"] .partners-label{ color:#566280; }
    [data-theme="light"] .partner-logo{ filter:none; }
    [data-theme="light"] .partners-sep{ background:rgba(15,23,42,0.12); }
    [data-theme="light"] .card header{
      background:linear-gradient(180deg, rgba(255,92,53,0.10), transparent 90%);
    }
    [data-theme="light"] .card header h2{ color:#1a2238; }
    [data-theme="light"] .publication-item,
    [data-theme="light"] .comment-item{
      border-bottom-color:rgba(15,23,42,0.06);
    }
    [data-theme="light"] .publication-meta strong{ color:#1a2238; }
    [data-theme="light"] .publication-item img{ filter:saturate(0.95) contrast(1); }
    [data-theme="light"] .comment-item{
      background:#fafbfd;
      border:1px solid rgba(15,23,42,0.05);
    }
    [data-theme="light"] .comment-item p{ color:var(--text); }
    [data-theme="light"] .highlight-panel{ border-top-color:rgba(15,23,42,0.06); }
    [data-theme="light"] .highlight-panel span{ color:var(--text); }

    /* CTA */
    [data-theme="light"] .cta-secondary{
      background:rgba(15,23,42,0.05);
      color:#1a2238;
      border-color:rgba(15,23,42,0.1);
    }
    [data-theme="light"] .cta-btn:hover{ box-shadow:0 8px 24px rgba(15,23,42,0.12); }

    /* Section titles */
    [data-theme="light"] .section-title{ color:#1a2238; }

    /* Sections (how, about, charts, datasets) */
    [data-theme="light"] .how-section,
    [data-theme="light"] .about-section,
    [data-theme="light"] .charts-section,
    [data-theme="light"] .datasets-section{
      background:#ffffff;
      border-color:rgba(15,23,42,0.07);
      box-shadow:0 6px 18px rgba(15,23,42,0.04);
    }
    [data-theme="light"] .step-card,
    [data-theme="light"] .chart-card,
    [data-theme="light"] .dataset-card,
    [data-theme="light"] .team-card,
    [data-theme="light"] .about-tech{
      background:#f7f9fd;
      border-color:rgba(15,23,42,0.07);
    }
    [data-theme="light"] .step-card:hover,
    [data-theme="light"] .dataset-card:hover{
      border-color:rgba(255,92,53,0.35);
    }
    [data-theme="light"] .step-card h3,
    [data-theme="light"] .dataset-name,
    [data-theme="light"] .team-info strong,
    [data-theme="light"] .about-text h2,
    [data-theme="light"] .about-text strong{
      color:#1a2238;
    }

    /* Tags / pills */
    [data-theme="light"] .about-tags span,
    [data-theme="light"] .tech-pills span,
    [data-theme="light"] .dataset-tag{
      background:#eef2f9;
      color:var(--text);
    }
    [data-theme="light"] .dataset-btn{
      background:#ffffff;
      color:#1a2238;
      border-color:rgba(15,23,42,0.1);
    }
    [data-theme="light"] .dataset-btn:hover{ background:var(--accent); color:#fff; border-color:var(--accent); }

    /* Charts */
    [data-theme="light"] .chart-tab,
    [data-theme="light"] .chart-model-btn{
      background:rgba(15,23,42,0.05);
      color:var(--muted);
    }
    [data-theme="light"] .chart-tab:hover{ background:rgba(15,23,42,0.1); color:#1a2238; }
    [data-theme="light"] .chart-tab.active,
    [data-theme="light"] .chart-model-btn.active{
      background:var(--accent); color:#fff;
    }
    [data-theme="light"] .chart-summary-item{
      background:#ffffff;
      border-color:rgba(15,23,42,0.07);
    }
    [data-theme="light"] .chart-summary-item .val{ color:#1a2238; }

    /* Articles */
    [data-theme="light"] .art-search-input{
      background:#ffffff;
      border-color:rgba(15,23,42,0.1);
      color:#1a2238;
    }
    [data-theme="light"] .art-search-input::placeholder{ color:var(--muted); }
    [data-theme="light"] .art-chip{
      background:rgba(15,23,42,0.05);
      color:var(--muted);
    }
    [data-theme="light"] .art-chip:hover{ background:rgba(15,23,42,0.1); color:#1a2238; }
    [data-theme="light"] .art-chip.active{ background:var(--accent); color:#fff; }
    [data-theme="light"] .art-chip span{ background:rgba(255,255,255,0.4); }
    [data-theme="light"] .art-item{
      background:#ffffff;
      border-color:rgba(15,23,42,0.07);
    }
    [data-theme="light"] .art-item:hover{
      background:#fafbfd;
      border-color:rgba(255,92,53,0.3);
      box-shadow:0 4px 18px rgba(15,23,42,0.06);
    }
    [data-theme="light"] .art-thumb{ filter:saturate(0.95) brightness(1); }
    [data-theme="light"] .art-title{ color:#1d4ed8; }
    [data-theme="light"] .art-title:hover{ color:#1e3a8a; }
    [data-theme="light"] .art-journal{ color:#047857; }
    [data-theme="light"] .art-year{
      background:rgba(15,23,42,0.06);
      color:var(--text);
    }
    [data-theme="light"] .art-btn-primary{
      background:rgba(29,78,216,0.1); color:#1d4ed8;
    }
    [data-theme="light"] .art-btn-primary:hover{ background:#1d4ed8; color:#fff; }

    /* Footer */
    [data-theme="light"] .site-footer{
      background:#ffffff;
      border-top-color:rgba(15,23,42,0.07);
    }
    [data-theme="light"] .footer-col h4{ color:#1a2238; }
    [data-theme="light"] .footer-col ul li a:hover{ color:#1a2238; }
    [data-theme="light"] .footer-bottom{ border-top-color:rgba(15,23,42,0.06); }
    [data-theme="light"] .footer-socials a{
      background:rgba(15,23,42,0.05);
      color:var(--muted);
    }

    /* Search dropdown */
    [data-theme="light"] .search-dropdown{
      background:#ffffff;
      border-color:rgba(15,23,42,0.08);
      box-shadow:0 12px 32px rgba(15,23,42,0.12);
    }
    [data-theme="light"] .search-result-item{ color:var(--text); }
    [data-theme="light"] .search-result-item:hover{ background:rgba(255,92,53,0.1); color:#1a2238; }

    /* Lang toggle */
    [data-theme="light"] .lang-toggle{
      background:rgba(15,23,42,0.05);
      border-color:rgba(15,23,42,0.1);
    }
    [data-theme="light"] .lang-btn{ color:var(--muted); }
    [data-theme="light"] .lang-btn:hover{ color:#1a2238; }
    [data-theme="light"] .lang-btn.active{ background:var(--accent); color:#fff; }

    /* Theme toggle in light */
    [data-theme="light"] .theme-toggle{
      background:rgba(15,23,42,0.05);
      border-color:rgba(15,23,42,0.1);
      color:var(--muted);
    }
    [data-theme="light"] .theme-toggle:hover{
      background:rgba(15,23,42,0.1);
      color:#1a2238;
    }