* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 100%);
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
header {
    background: linear-gradient(135deg, #a8c8ec 0%, #b8d4f0 100%);
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}
nav a {
    color: #2c3e50;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 5px;
    transition: background 0.3s;
}
nav a:hover {
    background: rgba(255,255,255,0.3);
}
main {
    background: #ffffff;
    margin: 30px auto;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
h1 {
    color: #4a6fa5;
    font-size: 2.5em;
    margin-bottom: 20px;
    border-bottom: 3px solid #b8d4f0;
    padding-bottom: 15px;
}
h2 {
    color: #5a7ba8;
    font-size: 1.8em;
    margin-top: 30px;
    margin-bottom: 15px;
}
h3 {
    color: #6a8bb5;
    font-size: 1.4em;
    margin-top: 20px;
    margin-bottom: 10px;
}
.quick-answer {
    background: #f0f5fa;
    border-left: 4px solid #a8c8ec;
    padding: 20px;
    margin: 25px 0;
    border-radius: 5px;
}
p {
    margin-bottom: 15px;
    text-align: justify;
}
ul, ol {
    margin: 15px 0 15px 30px;
}
li {
    margin-bottom: 10px;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.key-takeaways {
    background: #fff9e6;
    border: 2px solid #f5d76e;
    padding: 25px;
    margin: 30px 0;
    border-radius: 8px;
}
.key-takeaways h2 {
    color: #8b6914;
    margin-top: 0;
}
.faq {
    background: #f5f0ff;
    border: 2px solid #c5a3e8;
    padding: 25px;
    margin: 30px 0;
    border-radius: 8px;
}
.faq h2 {
    color: #6b4c8a;
    margin-top: 0;
}
.faq-item {
    margin-bottom: 20px;
}
.faq-item strong {
    color: #6b4c8a;
    display: block;
    margin-bottom: 8px;
}
.glossary {
    background: #e8f5e9;
    border: 2px solid #a5d6a7;
    padding: 25px;
    margin: 30px 0;
    border-radius: 8px;
}
.glossary h2 {
    color: #2e7d32;
    margin-top: 0;
}
.glossary dt {
    font-weight: bold;
    color: #2e7d32;
    margin-top: 15px;
}
.glossary dd {
    margin-left: 20px;
    margin-bottom: 10px;
}
.social-share {
    background: #ffe0e6;
    border: 2px solid #ffb3c6;
    padding: 20px;
    margin: 30px 0;
    border-radius: 8px;
    text-align: center;
}
.social-share a {
    color: #c2185b;
    text-decoration: none;
    margin: 0 10px;
    font-weight: 500;
}
footer {
    background: linear-gradient(135deg, #a8c8ec 0%, #b8d4f0 100%);
    padding: 30px 0;
    margin-top: 50px;
    text-align: center;
}
footer nav ul {
    margin-bottom: 20px;
}
.social-links {
    margin: 20px 0;
}
.social-links a {
    color: #2c3e50;
    text-decoration: none;
    margin: 0 15px;
}
.copyright {
    color: #2c3e50;
    margin-top: 20px;
}

/* Modal Window Styles */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: linear-gradient(135deg, #ffffff 0%, #f5f7fa 100%);
    width: 90%;
    max-width: 90%;
    height: 90%;
    max-height: 90%;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.3);
    overflow-y: auto;
    position: relative;
    border: 3px solid #4a6fa5;
}

.modal-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 3px solid #4a6fa5;
    padding-bottom: 20px;
}

.modal-header h2 {
    color: #4a6fa5;
    font-size: 2.2em;
    margin: 0;
}

.modal-body {
    font-size: 1.1em;
    line-height: 1.8;
    color: #333;
    margin-bottom: 30px;
}

.modal-body h3 {
    color: #5a7ba8;
    margin-top: 25px;
    margin-bottom: 15px;
}

.modal-body ul {
    margin: 15px 0 15px 30px;
}

.modal-body li {
    margin-bottom: 10px;
}

.modal-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 2px solid #b8d4f0;
}

.modal-button {
    background: linear-gradient(135deg, #4a6fa5 0%, #5a7ba8 100%);
    color: #ffffff;
    border: none;
    padding: 15px 50px;
    font-size: 1.2em;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(74, 111, 165, 0.3);
}

.modal-button:hover {
    background: linear-gradient(135deg, #5a7ba8 0%, #6a8bb5 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(74, 111, 165, 0.4);
}

.modal-button:active {
    transform: translateY(0);
}

.modal-counter {
    text-align: center;
    margin-top: 15px;
    color: #5a7ba8;
    font-size: 0.9em;
}

.modal-timer {
    text-align: center;
    margin-top: 10px;
    color: #6a8bb5;
    font-size: 0.95em;
    font-weight: 500;
}