* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: #0a0e27;
            color: #e2e8f0;
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* Navigation */
        nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(10, 14, 39, 0.95);
            backdrop-filter: blur(10px);
            z-index: 1000;
            padding: 1rem clamp(1rem, 5vw, 2rem);
            border-bottom: 1px solid rgba(255, 173, 51, 0.2);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .nav-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFAD33;
        }

        .nav-menu {
            display: flex;
            gap: clamp(1.5rem, 4vw, 3rem);
            list-style: none;
        }

        .nav-menu a {
            color: #cbd5e1;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
            position: relative;
            padding: 0.5rem 0;
            font-size: clamp(0.9rem, 2vw, 1rem);
        }

        .nav-menu a:hover {
            color: #FFAD33;
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #FFAD33, #FFD700);
            transition: width 0.3s;
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        .logo {
            display: flex;          /* Active le mode Flexbox */
           justify-content: center; /* Centre horizontalement */
            align-items: center;     /* Centre verticalement (si le parent a une hauteur) */
         }

        .logo img {
            width: 500px; 
           height: auto; 
            max-width: 100%; 
            display: block;
        }

        .content-wrapper {
          max-width: 800px;      /* Évite que les lignes soient trop longues (fatigant à lire) */
           margin: 0 auto;        /* Centre le bloc de texte */
            padding: 20px;         /* Espace sur les côtés pour le mobile */
        }

        .intro-text {
        font-family: 'Segoe UI', Roboto, sans-serif; /* Police propre */
        line-height: 1.6;      /* Augmente l'espace entre les lignes (indispensable) */
        color: #333;           /* Gris foncé plutôt que noir pur pour le confort visuel */
      font-size: 1.1rem;     /* Taille légèrement augmentée pour la lisibilité */
      margin-bottom: 1.5rem; /* Espace entre les deux paragraphes */
      text-align: left;      /* Garde l'alignement à gauche pour la facilité de lecture */
        }

      /* Lien blogue - Cybersec Chronicles */
        #blogue a {
      color: #38bdf8;              /* bleu clair */
       text-decoration: none;
      font-weight: 500;
          border-bottom: 1px solid transparent;
    transition: color 0.25s ease, border-color 0.25s ease;
        }

        #blogue a:hover {
       color: #7dd3fc;              /* bleu plus lumineux au survol */
       border-bottom: 1px solid #7dd3fc;
        }

        #blogue a:focus-visible {
       outline: 2px solid #38bdf8;
       outline-offset: 3px;
        }


        /* Menu hamburger - CSS pur */
        #menu-toggle {
            display: none;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 1001;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background: #FFAD33;
            border-radius: 3px;
            transition: all 0.3s;
        }

        #menu-toggle:checked ~ .nav-container .hamburger span:nth-child(1) {
            transform: rotate(45deg) translate(8px, 8px);
        }

        #menu-toggle:checked ~ .nav-container .hamburger span:nth-child(2) {
            opacity: 0;
        }

        #menu-toggle:checked ~ .nav-container .hamburger span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        /* Hero Section */
        #home {
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: clamp(2rem, 5vw, 4rem) clamp(1rem, 5vw, 2rem);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }

        #particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }

        .particle {
            position: absolute;
            width: 2px;
            height: 2px;
            background: #FFAD33;
            border-radius: 50%;
            opacity: 0.5;
        }

        .particle:nth-child(1) { left: 10%; top: 20%; animation: float1 18s infinite; }
        .particle:nth-child(2) { left: 80%; top: 10%; animation: float2 22s infinite; }
        .particle:nth-child(3) { left: 30%; top: 70%; animation: float3 20s infinite; }
        .particle:nth-child(4) { left: 90%; top: 60%; animation: float1 25s infinite; }
        .particle:nth-child(5) { left: 50%; top: 30%; animation: float2 19s infinite; }
        .particle:nth-child(6) { left: 20%; top: 80%; animation: float3 23s infinite; }
        .particle:nth-child(7) { left: 70%; top: 40%; animation: float1 21s infinite; }
        .particle:nth-child(8) { left: 40%; top: 50%; animation: float2 24s infinite; }
        .particle:nth-child(9) { left: 60%; top: 15%; animation: float3 17s infinite; }
        .particle:nth-child(10) { left: 15%; top: 45%; animation: float1 26s infinite; }
        .particle:nth-child(11) { left: 85%; top: 75%; animation: float2 20s infinite; }
        .particle:nth-child(12) { left: 35%; top: 25%; animation: float3 22s infinite; }
        .particle:nth-child(13) { left: 75%; top: 85%; animation: float1 19s infinite; }
        .particle:nth-child(14) { left: 25%; top: 55%; animation: float2 21s infinite; }
        .particle:nth-child(15) { left: 95%; top: 35%; animation: float3 24s infinite; }
        .particle:nth-child(16) { left: 5%; top: 65%; animation: float1 18s infinite; }
        .particle:nth-child(17) { left: 55%; top: 5%; animation: float2 23s infinite; }
        .particle:nth-child(18) { left: 45%; top: 95%; animation: float3 20s infinite; }
        .particle:nth-child(19) { left: 65%; top: 50%; animation: float1 22s infinite; }
        .particle:nth-child(20) { left: 12%; top: 35%; animation: float2 25s infinite; }
        .particle:nth-child(21) { left: 88%; top: 25%; animation: float3 19s infinite; }
        .particle:nth-child(22) { left: 32%; top: 65%; animation: float1 21s infinite; }
        .particle:nth-child(23) { left: 68%; top: 75%; animation: float2 23s infinite; }
        .particle:nth-child(24) { left: 22%; top: 15%; animation: float3 20s infinite; }
        .particle:nth-child(25) { left: 78%; top: 55%; animation: float1 24s infinite; }
        .particle:nth-child(26) { left: 42%; top: 85%; animation: float2 18s infinite; }
        .particle:nth-child(27) { left: 58%; top: 45%; animation: float3 22s infinite; }
        .particle:nth-child(28) { left: 8%; top: 75%; animation: float1 20s infinite; }
        .particle:nth-child(29) { left: 92%; top: 15%; animation: float2 26s infinite; }
        .particle:nth-child(30) { left: 48%; top: 35%; animation: float3 19s infinite; }
        .particle:nth-child(31) { left: 18%; top: 58%; animation: float1 21s infinite; }
        .particle:nth-child(32) { left: 82%; top: 42%; animation: float2 23s infinite; }
        .particle:nth-child(33) { left: 28%; top: 78%; animation: float3 25s infinite; }
        .particle:nth-child(34) { left: 72%; top: 22%; animation: float1 18s infinite; }
        .particle:nth-child(35) { left: 38%; top: 62%; animation: float2 20s infinite; }
        .particle:nth-child(36) { left: 62%; top: 38%; animation: float3 22s infinite; }
        .particle:nth-child(37) { left: 14%; top: 88%; animation: float1 24s infinite; }
        .particle:nth-child(38) { left: 86%; top: 12%; animation: float2 19s infinite; }
        .particle:nth-child(39) { left: 52%; top: 68%; animation: float3 21s infinite; }
        .particle:nth-child(40) { left: 6%; top: 32%; animation: float1 23s infinite; }
        .particle:nth-child(41) { left: 94%; top: 52%; animation: float2 20s infinite; }
        .particle:nth-child(42) { left: 26%; top: 46%; animation: float3 22s infinite; }
        .particle:nth-child(43) { left: 74%; top: 66%; animation: float1 25s infinite; }
        .particle:nth-child(44) { left: 34%; top: 14%; animation: float2 18s infinite; }
        .particle:nth-child(45) { left: 66%; top: 84%; animation: float3 21s infinite; }
        .particle:nth-child(46) { left: 16%; top: 72%; animation: float1 19s infinite; }
        .particle:nth-child(47) { left: 84%; top: 28%; animation: float2 24s infinite; }
        .particle:nth-child(48) { left: 46%; top: 56%; animation: float3 20s infinite; }
        .particle:nth-child(49) { left: 56%; top: 24%; animation: float1 22s infinite; }
        .particle:nth-child(50) { left: 36%; top: 92%; animation: float2 23s infinite; }

        @keyframes float1 {
            0%, 100% { transform: translate(0, 0); }
            25% { transform: translate(50px, -50px); }
            50% { transform: translate(-50px, 50px); }
            75% { transform: translate(25px, 25px); }
        }

        @keyframes float2 {
            0%, 100% { transform: translate(0, 0); }
            25% { transform: translate(-40px, 60px); }
            50% { transform: translate(60px, -40px); }
            75% { transform: translate(-30px, -30px); }
        }

        @keyframes float3 {
            0%, 100% { transform: translate(0, 0); }
            25% { transform: translate(30px, 40px); }
            50% { transform: translate(-60px, -30px); }
            75% { transform: translate(40px, -50px); }
        }

        .hero-content {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 1200px;
        }

        .logo {
            font-size: clamp(3rem, 10vw, 5rem);
            margin-bottom: clamp(1rem, 3vw, 2rem);
            filter: drop-shadow(0 0 20px rgba(255, 173, 51, 0.5));
            animation: pulse 3s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { filter: drop-shadow(0 0 20px rgba(255, 173, 51, 0.5)); }
            50% { filter: drop-shadow(0 0 40px rgba(255, 173, 51, 0.8)); }
        }

        h1 {
            font-size: clamp(2rem, 8vw, 4rem);
            font-weight: 800;
            background: linear-gradient(135deg, #FFAD33, #FFD700, #FFA500);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: clamp(0.5rem, 2vw, 1rem);
            animation: slideDown 1s ease-out;
            line-height: 1.2;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        h2 {
            font-size: clamp(1.1rem, 4vw, 1.8rem);
            color: #cbd5e1;
            font-weight: 400;
            margin-bottom: clamp(1rem, 3vw, 2rem);
            animation: slideDown 1s ease-out 0.2s both;
            line-height: 1.4;
        }

        .tagline {
            font-size: clamp(1rem, 3vw, 1.2rem);
            color: #94a3b8;
            max-width: 600px;
            margin: clamp(1rem, 3vw, 2rem) auto;
            animation: slideDown 1s ease-out 0.4s both;
            padding: 0 1rem;
        }

        .contact-info {
            margin-top: clamp(1.5rem, 4vw, 2rem);
            animation: slideDown 1s ease-out 0.6s both;
            display: flex;
            flex-direction: row;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: clamp(0.5rem, 2vw, 1.5rem);
            font-size: clamp(0.9rem, 2.5vw, 1rem);
        }

        .contact-info a {
            color: #FFAD33;
            text-decoration: none;
            transition: all 0.3s;
            padding: 0.5rem;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .contact-info a:hover {
            color: #FFD700;
        }

        /* Services Section */
        #carte {
            padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 2rem);
            background: linear-gradient(180deg, #0a0e27 0%, #0f1729 100%);
        }

        .section-title {
            text-align: center;
            font-size: clamp(2rem, 6vw, 3rem);
            margin-bottom: clamp(2rem, 6vw, 4rem);
            background: linear-gradient(135deg, #FFAD33, #FFD700);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
            gap: clamp(1rem, 3vw, 2rem);
            max-width: 1400px;
            margin: 0 auto;
        }

        .service-card {
            background: rgba(30, 41, 59, 0.5);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 173, 51, 0.2);
            border-radius: 20px;
            padding: clamp(1.5rem, 4vw, 2.5rem);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
            opacity: 0;
            animation: fadeInUp 0.6s ease-out forwards;
        }

        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .service-card:nth-child(1) { animation-delay: 0.1s; transform: translateY(30px); }
        .service-card:nth-child(2) { animation-delay: 0.2s; transform: translateY(30px); }
        .service-card:nth-child(3) { animation-delay: 0.3s; transform: translateY(30px); }
        .service-card:nth-child(4) { animation-delay: 0.4s; transform: translateY(30px); }
        .service-card:nth-child(5) { animation-delay: 0.5s; transform: translateY(30px); }
        .service-card:nth-child(6) { animation-delay: 0.6s; transform: translateY(30px); }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(255, 173, 51, 0.1), rgba(255, 215, 0, 0.1));
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover {
            transform: translateY(-10px);
            border-color: rgba(255, 173, 51, 0.5);
            box-shadow: 0 20px 40px rgba(255, 173, 51, 0.2);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: clamp(50px, 12vw, 60px);
            height: clamp(50px, 12vw, 60px);
            background: linear-gradient(135deg, #FFAD33, #FFD700);
            border-radius: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: clamp(1rem, 3vw, 1.5rem);
            font-size: clamp(1.5rem, 4vw, 1.8rem);
            position: relative;
            z-index: 1;
        }

        .service-card h3 {
            font-size: clamp(1.2rem, 4vw, 1.5rem);
            margin-bottom: clamp(0.75rem, 2vw, 1rem);
            color: #f1f5f9;
            position: relative;
            z-index: 1;
            line-height: 1.3;
        }

        .service-card p {
            color: #94a3b8;
            position: relative;
            z-index: 1;
            font-size: clamp(0.9rem, 2.5vw, 1rem);
            line-height: 1.6;
        }

        /* About Section */
        #about {
            padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 2rem);
            background: #0a0e27;
        }

        /* Blogue Section */
        #blogue {
            padding: clamp(3rem, 8vw, 6rem) clamp(1rem, 5vw, 2rem);
            background: linear-gradient(180deg, #0a0e27 0%, #0f1729 100%);
        }

        .about-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .about-content {
            background: rgba(30, 41, 59, 0.3);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 173, 51, 0.2);
            border-radius: 20px;
            padding: clamp(1.5rem, 5vw, 3rem);
            margin-bottom: clamp(2rem, 5vw, 3rem);
        }

        .about-content p {
            font-size: clamp(1rem, 2.5vw, 1.1rem);
            color: #cbd5e1;
            margin-bottom: clamp(1rem, 3vw, 1.5rem);
            line-height: 1.8;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(255, 173, 51, 0.1), rgba(255, 215, 0, 0.1));
            border: 2px solid rgba(255, 173, 51, 0.3);
            border-radius: 20px;
            padding: clamp(1.5rem, 5vw, 3rem);
            text-align: center;
            margin-top: clamp(2rem, 5vw, 3rem);
        }

        .cta-box h3 {
            font-size: clamp(1.3rem, 4vw, 2rem);
            margin-bottom: clamp(1rem, 3vw, 1.5rem);
            color: #FFAD33;
            line-height: 1.3;
        }

        .cta-box p {
            font-size: clamp(0.95rem, 2.5vw, 1.05rem);
            line-height: 1.7;
        }

        .cta-button {
            display: inline-block;
            background: linear-gradient(135deg, #FFAD33, #FFD700);
            color: #0a0e27;
            padding: clamp(0.875rem, 3vw, 1rem) clamp(2rem, 6vw, 3rem);
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: clamp(1rem, 2.5vw, 1.1rem);
            margin-top: clamp(1rem, 3vw, 1.5rem);
            transition: all 0.3s;
            box-shadow: 0 10px 30px rgba(255, 173, 51, 0.3);
            min-height: 44px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(255, 173, 51, 0.5);
            background: linear-gradient(135deg, #FFD700, #FFAD33);
        }

        .cta-button:active {
            transform: translateY(-1px);
        }

        .benefits-list {
            list-style: none;
            margin-top: clamp(1.5rem, 4vw, 2rem);
            text-align: left;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .benefits-list li {
            padding: clamp(0.75rem, 2vw, 1rem);
            margin-bottom: clamp(0.75rem, 2vw, 1rem);
            background: rgba(255, 173, 51, 0.05);
            border-left: 3px solid #FFAD33;
            border-radius: 8px;
            color: #cbd5e1;
            font-size: clamp(0.9rem, 2.5vw, 1rem);
            line-height: 1.6;
        }

        /* Footer */
        footer {
            background: rgba(10, 14, 39, 0.95);
            text-align: center;
            padding: clamp(1.5rem, 4vw, 2rem);
            border-top: 1px solid rgba(255, 173, 51, 0.2);
        }

        footer p {
            color: #64748b;
            font-size: clamp(0.85rem, 2vw, 0.95rem);
            line-height: 1.6;
        }

        footer a {
            color: #FFAD33;
            text-decoration: none;
            margin: 0 clamp(0.5rem, 2vw, 1rem);
            padding: 0.5rem;
            min-height: 44px;
            display: inline-flex;
            align-items: center;
        }

        /* Responsive - Tablettes */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
            }
        }

        /* Responsive - Mobile */
        @media (max-width: 768px) {
            nav {
                padding: 1rem;
            }

            .hamburger {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: min(300px, 80vw);
                height: 100vh;
                background: rgba(10, 14, 39, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 5rem 2rem 2rem;
                gap: 2rem;
                transition: right 0.3s ease-in-out;
                border-left: 1px solid rgba(255, 173, 51, 0.2);
            }

            #menu-toggle:checked ~ .nav-container .nav-menu {
                right: 0;
            }

            .nav-menu a {
                font-size: 1.2rem;
                padding: 1rem;
                border-bottom: 1px solid rgba(255, 173, 51, 0.1);
            }

            .services-grid {
                grid-template-columns: 1fr;
            }

            /* Réduire les particules sur mobile pour performance */
            .particle:nth-child(n+21) {
                display: none;
            }

            #home {
                padding-top: 100px;
            }
        }

        /* Très petits écrans */
        @media (max-width: 380px) {
            h1 {
                font-size: 1.8rem;
            }

            .service-card {
                padding: 1.25rem;
            }

            .cta-box {
                padding: 1.25rem;
            }
        }

        /* Tablettes en mode paysage */
        @media (min-width: 768px) and (max-width: 1024px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* Touch-friendly adjustments */
        @media (hover: none) and (pointer: coarse) {
            .service-card:active {
                transform: scale(0.98);
            }

            .cta-button:active {
                transform: scale(0.98);
            }
        }

        /* Modal/Popup CSS pur */
        .popup {
            display: none;
            position: fixed;
            z-index: 2000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(5px);
            overflow-y: auto;
            animation: fadeIn 0.3s ease-out;
        }

        .popup:target {
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 2rem;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .popup-content {
            background: linear-gradient(135deg, rgba(15, 23, 41, 0.95), rgba(10, 14, 39, 0.95));
            backdrop-filter: blur(20px);
            border: 2px solid rgba(255, 173, 51, 0.3);
            border-radius: 20px;
            padding: clamp(2rem, 5vw, 3rem);
            max-width: 800px;
            width: 100%;
            position: relative;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
            animation: slideUp 0.3s ease-out;
        }

        @keyframes slideUp {
            from {
                transform: translateY(50px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .popup-content h2 {
            color: #FFAD33;
            margin-bottom: 2rem;
            font-size: clamp(1.3rem, 4vw, 1.8rem);
            animation: none;
        }

        .close {
            position: absolute;
            top: 1.5rem;
            right: 1.5rem;
            color: #94a3b8;
            font-size: 2rem;
            font-weight: bold;
            text-decoration: none;
            transition: all 0.3s;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }

        .close:hover {
            color: #FFAD33;
            background: rgba(255, 173, 51, 0.1);
            transform: rotate(90deg);
        }

        /* Sections collapsibles CSS pur */
        .collapsible-checkbox {
            display: none;
        }

        .collapsible-btn {
            width: 100%;
            background: rgba(255, 173, 51, 0.1);
            border: 1px solid rgba(255, 173, 51, 0.2);
            border-radius: 10px;
            padding: 1rem 1.5rem;
            margin: 1rem 0 0;
            color: #e2e8f0;
            font-size: clamp(1rem, 2.5vw, 1.1rem);
            text-align: left;
            cursor: pointer;
            transition: all 0.3s;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }

        .collapsible-btn::after {
            content: '+';
            font-size: 1.5rem;
            color: #FFAD33;
            transition: transform 0.3s;
        }

        .collapsible-btn:hover {
            background: rgba(255, 173, 51, 0.15);
            border-color: rgba(255, 173, 51, 0.4);
        }

        .collapsible-btn em {
            color: #FFAD33;
            font-style: normal;
            font-weight: 700;
        }

        .collapsible-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(30, 41, 59, 0.3);
            border-radius: 0 0 10px 10px;
        }

        .collapsible-content p {
            padding: 0 1.5rem;
            margin: 1rem 0;
            color: #cbd5e1;
            font-size: clamp(0.9rem, 2.5vw, 1rem);
            line-height: 1.7;
            animation: none;
        }

        .collapsible-content p:first-child {
            padding-top: 1.5rem;
        }

        .collapsible-content p:last-child {
            padding-bottom: 1.5rem;
        }

        .collapsible-content u {
            color: #FFAD33;
            text-decoration: underline;
        }

        .collapsible-checkbox:checked + .collapsible-btn::after {
            content: '−';
            transform: rotate(180deg);
        }

        .collapsible-checkbox:checked + .collapsible-btn + .collapsible-content {
            max-height: 1000px;
        }

        @media (max-width: 768px) {
            .popup:target {
                padding: 1rem;
                align-items: flex-start;
            }

            .popup-content {
                margin-top: 2rem;
            }

            .close {
                top: 1rem;
                right: 1rem;
            }
        }