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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f8fafc;
    color: #1e293b;
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-nav {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-small {
    max-width: 64rem;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
nav {
     position: fixed;
     top: 0;
     left: 0;
     right: 0;
     z-index: 1000;
     background: rgba(255, 255, 255, 0.8);
     backdrop-filter: blur(20px);
     border-bottom: 1px solid #f1f5f9;
 }

 .nav-content {
     display: flex;
     justify-content: space-between;
     align-items: center;
     height: 80px;
     max-width: 1200px;
     margin: 0 auto;
     padding: 0 1.5rem;
     position: relative;
 }

 .logo {
     display: flex;
     align-items: center;
     gap: 0.75rem;
     text-decoration: none;
     z-index: 1001;
 }

 /* Menu toggle (burger) */
 .menu-toggle {
     display: none;
     background: none;
     border: none;
     cursor: pointer;
     padding: 0.5rem;
     z-index: 1001;
     color: #1e3a8a;
 }

 .menu-toggle .close-icon {
     display: none;
 }

 .menu-toggle.active .menu-icon {
     display: none;
 }

 .menu-toggle.active .close-icon {
     display: block;
 }

 .nav-buttons {
     display: flex;
     gap: 1rem;
     align-items: center;
 }

 .btn {
     padding: 0.4rem 15px;
     border-radius: 9999px;
     font-weight: 500;
     text-decoration: none;
     transition: all 0.3s;
     cursor: pointer;
     border: none;
     font-size: 1rem;
     display: inline-flex;
     align-items: center;
     gap: 0.5rem;
 }

 .btn-outline {
     border: 1px solid #93c5fd;
     background: transparent;
     color: #1e3a8a;
 }

 .btn-outline:hover {
     background: #eff6ff;
 }

 .btn-primary {
     background: #1e3a8a;
     color: white;
 }

 .btn-primary:hover {
     background: #1e40af;
 }

 .btn-lg {
     padding: 1rem 2rem;
     height: 56px;
 }

 /* Responsive */
 @media (max-width: 768px) {
     .menu-toggle {
         display: flex;
         align-items: center;
         justify-content: center;
     }

     .nav-buttons {
         position: fixed;
         top: 80px;
         left: 0;
         right: 0;
         background: rgba(255, 255, 255, 0.95);
         backdrop-filter: blur(20px);
         flex-direction: column;
         padding: 1rem 1.5rem;
         gap: 1.5rem;
         box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
         transform: translateY(-100%);
         opacity: 0;
         visibility: hidden;
         transition: all 0.3s ease-in-out;
         z-index: 999;
     }

     .nav-buttons.active {
         transform: translateY(0);
         opacity: 1;
         visibility: visible;
     }

     .nav-buttons a {
         width: 100%;
         justify-content: center;
         padding: 12px 1rem;
         font-size: 1.1rem;
     }

     .nav-content {
         padding: 0 1rem;
     }

     .logo svg {
         width: 285px;
         height: auto;
     }
 }

 @media (max-width: 480px) {
     .logo svg {
         width: 285px;
     }

     .nav-content {
         height: 70px;
     }

     .nav-buttons {
         top: 70px;
     }
 }


/* Header */
.header-section {
    padding: 6rem 0;
    background: white;
    border-bottom: 1px solid #f1f5f9;
}

.header-content {
    max-width: 48rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: #dbeafe;
    border-radius: 9999px;
    margin-bottom: 1.5rem;
}

.badge-text {
    font-size: 0.875rem;
    color: #1e3a8a;
    font-weight: 500;
}

h1 {
    font-size: clamp(1.875rem, 4vw, 2.25rem);
    font-weight: 700;
    color: #1e3a8a;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e3a8a;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
}

.header-description {
    font-size: 1.125rem;
    color: #475569;
}

/* Content Section */
.content-section {
    padding: 3rem 0;
}

.card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    padding: 2rem;
}

@media (min-width: 1024px) {
    .card {
        padding: 3rem;
    }
}

.content {
    color: #475569;
    line-height: 1.8;
}

.content p {
    margin-bottom: 0.75rem;
}

.content strong {
    color: #334155;
    font-weight: 600;
}

.content ul {
    margin: 0.75rem 0;
    padding-left: 1.5rem;
}

.content li {
    margin-bottom: 0.5rem;
}

.info-box {
    background: #f8fafc;
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin: 1rem 0;
}

.info-box p {
    color: #334155;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.definition-box {
    margin-bottom: 1rem;
}

.definition-title {
    font-weight: 600;
    color: #334155;
    margin-bottom: 0.5rem;
}

.definition-text {
    color: #475569;
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.definition-text:last-child {
    margin-bottom: 0;
}

.update-date {
    margin-top: 2rem;
    font-size: 0.875rem;
    color: #475569;
}

.update-date strong {
    color: #1e3a8a;
}

/* Footer */
  /* Footer */
    footer {
        background: #1e3a8a;
        padding: 4rem 0;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 3rem;
        margin-bottom: 3rem;
    }

    footer h4 {
        font-size: 1rem;
        font-weight: 600;
        color: white;
        margin-bottom: 1rem;
    }

    footer p {
        color: #94a3b8;
    }

    footer a {
        color: #94a3b8;
        text-decoration: none;
        transition: color 0.3s;
    }

    footer a:hover {
        color: white;
    }

    .footer-bottom {
        padding-top: 2rem;
        border-top: 1px solid #1e40af;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 1rem;
    }

    .footer-copyright {
        font-size: 0.875rem;
        color: #64748b;
    }

    /* Responsive */
    @media (max-width: 768px) {
        .hero {
            padding: 8rem 0 4rem;
        }

        .container-nav {
            width: 100% !important;
            /* max-width: 1280px; */
            margin: 0 auto;
            padding: 0 1rem;
        }

        .btn {
            padding: 0.3rem 1rem;
        }

        .footer-bottom {
            flex-direction: column;
            text-align: center;
        }

        .card-gradient {
            border: 1px solid #bfdbfe;
            background: linear-gradient(to bottom right, #eff6ff, white);
            width: 100%;
        }

        .blue-card {
            background: rgba(30, 64, 175, 0.5);
            border: 1px solid #1e40af;
            width: 100%;
        }

        .card-blue {
            border: 1px solid #bfdbfe;
            background: white;
            width: 100%;
        }

        .grid-2 {
            grid-template-columns: repeat(auto-fit, minmax(300px, 2fr));
        }
    }

    @media (min-width: 1024px) {
        .container {
            padding: 0 2rem;
        }
    }