* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}
body {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    line-height: 1.7;
    color: #2d3436;
    background: #f9f9f9;
}
.container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
h1 {
    font-size: 2.2rem;
    color: #192a56;
    text-align: center;
    margin-bottom: 12px;
}
.subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #555;
    margin-bottom: 30px;
}
h2 {
    font-size: 1.7rem;
    color: #273c75;
    margin: 40px 0 18px;
    padding-bottom: 8px;
    border-bottom: 2px solid #00a8ff;
}
h3 {
    font-size: 1.3rem;
    color: #0097e6;
    margin: 22px 0 10px;
}
p {
    font-size: 1.05rem;
    margin: 10px 0;
}
ul {
    margin: 12px 0 12px 26px;
}
li {
    margin: 6px 0;
    font-size: 1.05rem;
}
.feature-box {
    background: #f1f9ff;
    padding: 18px;
    border-radius: 8px;
    margin: 16px 0;
    border-left: 4px solid #00a8ff;
}
.step-box {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin: 15px 0;
}
.download-btn {
    display: block;
    width: fit-content;
    margin: 30px auto;
    background: #00a8ff;
    color: white;
    padding: 14px 40px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.3s;
}
.download-btn:hover {
    background: #0097e6;
}
.faq-item {
    margin: 18px 0;
    padding-bottom: 12px;
    border-bottom: 1px solid #eee;
}
.footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    color: #666;
    font-size: 0.95rem;
    border-top: 1px solid #eee;
}
.footer a {
    color: #00a8ff;
    text-decoration: none;
}
@media (max-width:768px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.4rem; }
    h3 { font-size: 1.2rem; }
    .container { padding: 20px; }
    body { padding: 10px; }
}