/* Reset cơ bản */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background-color: #f4f6f9;
    color: #333;
    line-height: 1.6;
}

/* HERO */
.hero {
    padding: 120px 20px;
    text-align: center;
    background: linear-gradient(135deg, #4e73df, #1cc88a);
    color: white;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.hero p {
    font-size: 18px;
    opacity: 0.95;
}

/* SECTION */
.section {
    max-width: 900px;
    margin: 60px auto;
    padding: 40px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.section h2 {
    margin-bottom: 20px;
    color: #4e73df;
    font-size: 26px;
    border-bottom: 2px solid #1cc88a;
    display: inline-block;
    padding-bottom: 5px;
}

/* LIST */
ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding: 10px 0;
    font-size: 17px;
    border-bottom: 1px solid #eee;
}

/* Hover effect */
.section:hover {
    transform: translateY(-5px);
    transition: 0.3s;
}