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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.7;
    color: #1a4d5c;
    background: #ffffff;
    min-height: 100vh;
    margin: 0;
}

.hero-section {
    background: #ffffff;
    background-image:
        radial-gradient(circle at 30% 20%, rgba(6, 182, 212, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(59, 130, 246, 0.02) 0%, transparent 50%);
    padding: 15px 40px 15px;
    text-align: center;
    position: relative;
}

.hero-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    max-width: 750px;
    margin: 0 auto;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 98px,
            rgba(6, 182, 212, 0.01) 100px
        ),
        repeating-linear-gradient(
            180deg,
            transparent,
            transparent 98px,
            rgba(59, 130, 246, 0.01) 100px
        );
    pointer-events: none;
}

.logo {
    max-width: 150px;
    height: auto;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 4px 12px rgba(6, 182, 212, 0.15));
    transition: filter 0.3s ease;
}

.logo:hover {
    filter: drop-shadow(0 6px 20px rgba(6, 182, 212, 0.25));
}

.tagline {
    font-size: 1.4rem;
    color: #1a4d5c;
    font-weight: 400;
    letter-spacing: 0.3px;
    font-style: italic;
    position: relative;
    z-index: 1;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    text-align: left;
    margin: 0;
}

.stealth-icon {
    font-size: 1.8rem;
    margin-bottom: 8px;
    opacity: 0.7;
}

.stealth-notice {
    font-size: 1.1rem;
    color: #1a4d5c;
    font-weight: 500;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.5;
}

.main-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 20px 15px;
    background: #ffffff;
    position: relative;
    box-shadow: 0 -1px 3px rgba(6, 182, 212, 0.05);
}

.content-section {
    margin-bottom: 15px;
}

.content-card {
    margin-bottom: 20px;
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.01) 0%, rgba(59, 130, 246, 0.01) 100%);
    border: 1px solid rgba(6, 182, 212, 0.08);
    transition: all 0.3s ease;
}

.content-card:hover {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.02) 0%, rgba(59, 130, 246, 0.02) 100%);
    border-color: rgba(6, 182, 212, 0.15);
    box-shadow: 0 4px 12px rgba(6, 182, 212, 0.08);
}

.card-title {
    font-size: 1.1rem;
    color: #1a4d5c;
    font-weight: 500;
    margin-bottom: 10px;
}

.card-description {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 10px;
    line-height: 1.4;
}

.email {
    color: #1a4d5c;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.email:hover {
    border-bottom-color: #1a4d5c;
}

.divider {
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, rgba(6, 182, 212, 0.3) 0%, rgba(59, 130, 246, 0.3) 50%, rgba(30, 58, 138, 0.3) 100%);
    margin: 15px auto;
    border-radius: 1px;
}

.footer-section {
    background: linear-gradient(135deg, rgba(248, 250, 252, 0.8) 0%, rgba(241, 245, 249, 0.9) 100%);
    padding: 25px 40px 20px;
    text-align: center;
    border-top: 1px solid rgba(6, 182, 212, 0.1);
    box-shadow: 0 -2px 10px rgba(6, 182, 212, 0.05);
    position: relative;
}

.footer-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.01) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(59, 130, 246, 0.01) 0%, transparent 50%);
    pointer-events: none;
}

.company-info {
    margin-bottom: 15px;
}

.company-info p {
    color: #666;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.privacy-link {
    color: #1a4d5c;
    text-decoration: none;
    font-size: 0.85rem;
    margin-bottom: 15px;
    display: inline-block;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.privacy-link:hover {
    border-bottom-color: #1a4d5c;
}

.copyright {
    color: #999;
    font-size: 0.8rem;
    border-top: 1px solid #e9ecef;
    padding-top: 15px;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 12px 20px 10px;
    }

    .hero-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .stealth-section {
        margin: 8px auto 15px;
    }

    .stealth-item {
        padding: 15px;
    }

    .stealth-notice {
        font-size: 1rem;
    }

    .main-content {
        padding: 15px 15px 10px;
    }

    .footer-section {
        padding: 20px 25px 15px;
    }

    .logo {
        max-width: 160px;
    }

    .tagline {
        font-size: 1.1rem;
        text-align: center;
    }

    .content-card {
        margin-bottom: 15px;
        padding: 15px;
    }

    .card-title {
        font-size: 1rem;
    }

    .divider {
        margin: 12px auto;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 8px 15px 6px;
    }

    .hero-content {
        gap: 8px;
    }

    .stealth-section {
        margin: 6px auto 12px;
    }

    .stealth-item {
        padding: 12px;
    }

    .stealth-icon {
        font-size: 1.5rem;
    }

    .stealth-notice {
        font-size: 0.95rem;
    }

    .main-content {
        padding: 12px 12px 8px;
    }

    .logo {
        max-width: 130px;
    }

    .tagline {
        font-size: 1rem;
    }

    .card-title {
        font-size: 0.95rem;
    }

    .content-card {
        padding: 12px;
        margin-bottom: 12px;
    }
}