* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    color: #243238;
    background: #ffffff;
    line-height: 1.6;
}

a {
    color: #005249;
}

h1,
h2,
h3 {
    margin-top: 0;
}

.site-header {
    background: #003a44;
    color: white;
    padding: 18px 0;
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
}

.site-logo {
    width: 52px;
    height: 52px;
    object-fit: contain;
}

nav {
    display: flex;
    gap: 22px;
    flex-wrap: wrap;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 600;
}

nav a:hover {
    text-decoration: underline;
}

.hero {
    background: #edf6f4;
    padding: 85px 0;
    text-align: center;
}

.hero h1 {
    color: #005249;
    font-size: 44px;
    margin-bottom: 15px;
}

.hero p {
    max-width: 760px;
    margin: 0 auto 20px;
    font-size: 18px;
}

.section {
    padding: 65px 0;
}

.section-alt {
    background: #f5f7f7;
}

.section h2 {
    text-align: center;
    color: #005249;
    font-size: 32px;
    margin-bottom: 30px;
}

.card-grid {
    display: grid;
    grid-template-columns:
        repeat(auto-fit, minmax(260px, 1fr));
    gap: 22px;
}

.card {
    background: white;
    border: 1px solid #dce5e3;
    border-radius: 8px;
    padding: 24px;
}

.card h3 {
    color: #005249;
}

.product-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 12px 22px;
    margin: 8px 5px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 700;
}

.btn-primary {
    background: #005249;
    color: white;
}

.btn-primary:hover {
    background: #003e38;
}

.btn-secondary {
    background: white;
    color: #005249;
    border: 2px solid #005249;
}

.btn-secondary:hover {
    background: #edf6f4;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    font-weight: 600;
    text-decoration: none;
}

.version {
    font-weight: 700;
    color: #005249;
}

.feature-list {
    max-width: 760px;
    margin: 0 auto;
}

.feature-list li {
    margin-bottom: 8px;
}

.contact-block {
    text-align: center;
}

footer {
    background: #003a44;
    color: white;
    text-align: center;
    padding: 22px 0;
    margin-top: 40px;
}

@media (max-width: 700px) {
    .site-header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        padding: 55px 0;
    }

    .hero h1 {
        font-size: 34px;
    }
}

.software-screenshot {
    display: block;
    width: 100%;
    max-width: 1000px;
    height: auto;
    margin: 0 auto 20px;
    border: 1px solid #dce5e3;
    border-radius: 8px;
}

.screenshot-spacer {
    height: 45px;
}