* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #f5f7fa;
    color: #1f2937;
}

.hero-section {
    background: linear-gradient(135deg, #071a2f, #0f2f52);
    color: white;
    padding: 80px 20px;
    text-align: center;
}

.hero-logo {
    width: 120px;
    margin-bottom: 20px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 14px;
}

.hero-tagline {
    font-weight: 700;
    margin-bottom: 14px;
}

.hero-description {
    max-width: 720px;
    margin: auto;
    line-height: 1.7;
    color: #dbeafe;
}

.hero-buttons {
    margin-top: 30px;
}

.primary-btn,
.secondary-btn {
    display: inline-block;
    padding: 13px 26px;
    border-radius: 10px;
    text-decoration: none;
    margin: 10px;
    font-weight: bold;
}

.primary-btn {
    background: white;
    color: #071a2f;
}

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

.feature-section {
    max-width: 1250px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    padding: 56px 20px 40px;
}

.feature-card {
    background: white;
    padding: 30px 24px;
    border-radius: 18px;
    box-shadow: 0 10px 28px rgba(15, 47, 82, 0.10);
    text-align: left;
    border: 1px solid #e5edf5;
}

.feature-card h3 {
    color: #0f766e;
    font-size: 24px;
    margin-bottom: 8px;
}

.feature-card h4 {
    font-size: 16px;
    color: #111827;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 14px;
    line-height: 1.7;
    color: #4b5563;
}

.process-section {
    max-width: 1150px;
    margin: 0 auto;
    text-align: center;
    padding: 46px 20px;
}

.process-section h2 {
    font-size: 26px;
    margin-bottom: 22px;
    color: #111827;
}

.process-flow {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}

.process-flow div {
    background: white;
    border: 1px solid #e5edf5;
    padding: 12px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    box-shadow: 0 6px 18px rgba(15, 47, 82, 0.08);
}

.buildframe-footer {
    width: 100%;
    padding: 16px 18px;
    background: linear-gradient(135deg, #071a2f, #0f2f52);
    color: #ffffff;
    text-align: center;
    border-top: 1px solid rgba(116, 227, 255, 0.22);
}

.buildframe-credit {
    max-width: 980px;
    margin: 0 auto;
}

.buildframe-credit strong {
    display: block;
    font-size: 13px;
    font-weight: 800;
    margin-bottom: 3px;
}

.buildframe-credit span {
    display: block;
    font-size: 11px;
    opacity: 0.85;
    margin-bottom: 8px;
}

.buildframe-links {
    display: flex;
    justify-content: center;
    gap: 8px 14px;
    flex-wrap: wrap;
}

.buildframe-links a {
    color: #ffffff;
    text-decoration: none;
    font-size: 11px;
    font-weight: 600;
    opacity: 0.9;
}

.buildframe-links a:hover {
    opacity: 1;
    text-decoration: underline;
}

@media (max-width: 1000px) {
    .feature-section {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 700px) {
    .hero-content h1 {
        font-size: 2.1rem;
    }

    .hero-section {
        padding: 60px 18px;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
        max-width: 280px;
    }

    .feature-section {
        grid-template-columns: 1fr;
        padding: 38px 16px;
    }

    .process-section {
        padding: 34px 16px;
    }
}

.faq-section {
    max-width: 1150px;
    margin: 0 auto;
    padding: 50px 20px;
    text-align: center;
}

.faq-section h2 {
    font-size: 26px;
    margin-bottom: 26px;
    color: #111827;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    text-align: left;
}

.faq-card {
    background: white;
    border: 1px solid #e5edf5;
    border-radius: 16px;
    padding: 22px;
    box-shadow: 0 8px 22px rgba(15, 47, 82, 0.08);
}

.faq-card h3 {
    color: #0f766e;
    font-size: 16px;
    margin-bottom: 10px;
}

.faq-card p {
    font-size: 14px;
    line-height: 1.7;
    color: #4b5563;
}

@media (max-width: 700px) {
    .faq-grid {
        grid-template-columns: 1fr;
    }
}

.survey-info-panel {
    max-width: 1100px;
    margin: 30px auto;
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    text-align: left;
    animation: fadeIn .3s ease;
}

.survey-info-panel h3 {
    color: #0f766e;
    margin-bottom: 20px;
}

.info-block {
    margin-bottom: 20px;
}

.info-block h4 {
    margin-bottom: 8px;
    color: #0f766e;
}

.info-block p {
    line-height: 1.7;
    color: #444;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.process-flow button {
    background: white;
    border: 1px solid #e5edf5;
    padding: 12px 16px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(15, 47, 82, 0.08);
}

.process-flow button:hover {
    background: #0f766e;
    color: white;
}

.survey-info-panel {
    max-width: 950px;
    margin: 28px auto 0;
    background: white;
    border-radius: 20px;
    padding: 28px;
    text-align: left;
    box-shadow: 0 10px 28px rgba(15, 47, 82, 0.10);
}