body {
    font-family: 'Inter', Arial, sans-serif;
    background: #f4f7fa;
    color: #1a2233;
    margin: 0;
    padding: 0;
}
.hero {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(90deg,#191970 80%,#00cc99 100%);
    color: #fff;
    padding: 5vw 8vw;
    border-radius: 0 0 38px 38px;
}
.hero-content {
    flex: 1 1 400px;
    text-align: left;
}
.hero-content h1 {
    font-size: 2.8em;
    font-weight: 900;
    margin-bottom: 0.3em;
}
.hero-content h2 {
    font-size: 1.5em;
    font-weight: 500;
    margin-bottom: 1em;
}
.cta-btn {
    background: #00cc99;
    color: #fff;
    border-radius: 22px;
    font-size: 1.18em;
    font-weight: bold;
    padding: 0.85em 2.1em;
    margin-top: 1.2em;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 2px 18px rgba(44,69,113,0.14);
    transition: background .18s;
}
.cta-btn:hover {background: #009977;}
.hero-images {
    flex: 1 1 340px;
    text-align: center;
}
.hero-images .main-img {
    max-width: 340px;
    width: 100%;
    border-radius: 28px;
    box-shadow: 0 2px 24px rgba(44,69,113,0.14);
    margin-top: 2em;
}
@media(max-width:900px) {
    .hero { flex-direction: column; text-align: center;}
    .hero-content { text-align: center;}
}
section {
    background: #fff;
    margin: 2em 8vw;
    padding: 2em 1em;
    border-radius: 18px;
    box-shadow: 0 2px 12px rgba(44,69,113,0.09);
    margin-bottom: 2.8em;
}
h2 { text-align: center; font-size: 2.0em;}
.price-box {
    background: #00cc99;
    color: #fff;
    border-radius: 15px;
    font-size: 1.8em;
    text-align: center;
    font-weight: bold;
    margin: 2em auto;
    padding: 1.5em;
    max-width: 280px;
}
.contact {
    background: #222;
    color: #f4f7fa;
    border-radius: 15px;
    margin-bottom: 3em;
    padding: 2em 1em;
}
form input[type="email"] {
    border-radius: 8px; border: 1px solid #ddd; padding: 0.9em; font-size: 1.1em; width: 250px; margin-right: 1em;
}
form button {
    background: #00cc99; color: white; border-radius: 10px; padding: 0.9em 2em; border: none; font-weight: bold; cursor: pointer;
}
footer {
    text-align: center; background: #191970; color: #bbb; padding: 1.3em; margin-top: 0; border-radius: 0 0 12px 12px;
}
ul, details { max-width: 700px; margin-left: auto; margin-right: auto;}