body {
    margin: 0;
    font-family: "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #222;
}

a {
    color: inherit;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: #0b2545;
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 10;
}

.logo {
    font-weight: bold;
    font-size: 1.1rem;
}

.nav-links a {
    margin-left: 16px;
    text-decoration: none;
    font-size: 0.95rem;
    opacity: 0.85;
}

.nav-links a:hover {
    opacity: 1;
}

.nav-links a.active {
    border-bottom: 2px solid #4dabff;
    padding-bottom: 2px;
    opacity: 1;
}

.hero {
    position: relative;
    background: url('https://images.unsplash.com/photo-1530023367847-a683933f417f') center/cover no-repeat;
    height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}

.overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    padding: 20px;
}

.hero-cta-row {
    margin-top: 24px;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.cta {
    display: inline-block;
    padding: 10px 22px;
    border-radius: 999px;
    background: #4dabff;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
}

.cta.secondary {
    background: transparent;
    border: 1px solid #fff;
}

.page-hero {
    padding: 48px 24px 24px;
    background: #f4f7fb;
    text-align: center;
}

.page-hero h1 {
    margin-bottom: 8px;
}

main {
    max-width: 1000px;
    margin: 0 auto;
}

.section {
    padding: 40px 24px;
}

.section:nth-of-type(even) {
    background: #fafafa;
}

.two-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 16px;
}

.feature {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.bullet-list {
    list-style-type: disc;
    padding-left: 20px;
}

.numbered-list {
    list-style-type: decimal;
    padding-left: 20px;
}

.three-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.centered-link {
    text-align: center;
    margin-top: 8px;
}

.signup-section {
    background: linear-gradient(135deg, #0b2545 0%, #134e8a 100%);
    color: white;
    padding: 60px 24px;
    text-align: center;
}

.signup-container {
    max-width: 500px;
    margin: 0 auto;
}

.signup-container h2 {
    font-size: 2rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.signup-container p {
    font-size: 1.1rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

.signup-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 400px;
    margin: 0 auto;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.95);
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    background: white;
    box-shadow: 0 0 0 3px rgba(77, 171, 255, 0.3);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
}

.signup-btn {
    padding: 14px 32px;
    background: #4dabff;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.signup-btn:hover {
    background: #3a96e6;
}

.signup-btn:disabled {
    background: #6c757d;
    cursor: not-allowed;
}

.signup-success {
    margin-top: 20px;
    padding: 16px;
    background: rgba(40, 167, 69, 0.2);
    border: 1px solid rgba(40, 167, 69, 0.5);
    border-radius: 8px;
    color: #28a745;
}

.signup-success p {
    margin: 0;
    font-weight: 500;
}

footer {
    text-align: center;
    padding: 20px;
    background: #0b2545;
    color: white;
    margin-top: 40px;
    font-size: 0.85rem;
}

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

    .nav-links {
        display: flex;
        flex-wrap: wrap;
        margin-top: 8px;
    }

    .nav-links a {
        margin-left: 0;
        margin-right: 12px;
        margin-bottom: 4px;
    }

    .hero {
        height: 70vh;
    }
}