:root {
    --primary: #e82127; /* Rouge de Hong Kong */
    --secondary: #000000;
    --accent: #f8d64e;
    --light-bg: #fff5f5;
    --dark-text: #2a2a2a;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.8;
    color: var(--dark-text);
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fafafa;
}

h1 {
    color: var(--primary);
    font-size: 2.4rem;
    text-align: center;
    border-bottom: 3px solid var(--accent);
    padding-bottom: 15px;
    margin: 25px 0;
}

h2 {
    color: var(--secondary);
    font-size: 1.8rem;
    margin-top: 45px;
    border-left: 4px solid var(--primary);
    padding-left: 15px;
}

h3 {
    color: var(--primary);
    font-size: 1.4rem;
    margin-top: 35px;
}

.intro-highlight {
    background-color: var(--light-bg);
    border-radius: 10px;
    padding: 25px;
    margin: 30px 0;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
}

ul.feature-list {
    padding-left: 0;
    list-style-type: none;
}

ul.feature-list li {
    margin-bottom: 15px;
    position: relative;
    padding-left: 35px;
}

ul.feature-list li:before {
    content: "•";
    color: var(--primary);
    font-size: 2rem;
    position: absolute;
    left: 0;
    top: -5px;
}

.app-card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.app-card {
    background: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-top: 4px solid var(--primary);
}

.app-card h4 {
    margin-top: 0;
    color: var(--primary);
}

.do-dont {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 25px 0;
}

.do-box, .dont-box {
    padding: 20px;
    border-radius: 8px;
}

.do-box {
    background-color: #f0f8f0;
    border-left: 4px solid #4CAF50;
}

.dont-box {
    background-color: #fff0f0;
    border-left: 4px solid #f44336;
}

.tip-box {
    background-color: #f0f7ff;
    padding: 20px;
    border-radius: 8px;
    margin: 30px 0;
    border-left: 4px solid #2196F3;
}

.warning-box {
    background-color: #fff8e1;
    padding: 20px;
    border-radius: 8px;
    margin: 30px 0;
    border-left: 4px solid #FFC107;
}

.stat-box {
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: 8px;
    margin: 40px 0;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    color: var(--primary);
    font-weight: bold;
    margin: 10px 0;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary), #ff6b6b);
    color: white;
    text-align: center;
    padding: 30px;
    border-radius: 10px;
    margin: 50px 0;
}

.quote {
    font-style: italic;
    border-left: 3px solid var(--accent);
    padding-left: 20px;
    margin: 30px 0;
    color: #555;
}

@media (max-width: 600px) {
    .do-dont {
        grid-template-columns: 1fr;
    }

    .app-card-container {
        grid-template-columns: 1fr;
    }