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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #262626;
    background:
        radial-gradient(circle at 20% 20%, rgba(86, 94, 255, 0.38), transparent 32%),
        radial-gradient(circle at 85% 10%, rgba(0, 190, 173, 0.28), transparent 30%),
        linear-gradient(135deg, #111827 0%, #1f2937 48%, #0f172a 100%);
    min-height: 100vh;
}

.container {
    max-width: 820px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

h1 {
    color: #ffffff;
    font-size: 2.8em;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 8px;
}

.tagline {
    color: rgba(255, 255, 255, 0.86);
    font-size: 1.2em;
}

main {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

.hero {
    text-align: center;
    margin-bottom: 40px;
}

.hero p {
    font-size: 1.15em;
    color: #4b5563;
    margin-bottom: 24px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #111827;
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    transition: transform 0.2s, box-shadow 0.2s;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(17, 24, 39, 0.28);
}

.features {
    display: grid;
    gap: 20px;
}

.feature {
    padding: 22px;
    background: #f8fafc;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
}

.feature h3 {
    color: #2563eb;
    margin-bottom: 8px;
}

.feature p {
    color: #4b5563;
}

.policy-content {
    line-height: 1.8;
}

.policy-content h2 {
    color: #2563eb;
    margin: 32px 0 16px 0;
    font-size: 1.4em;
}

.policy-content h2:first-child {
    margin-top: 0;
}

.policy-content h3 {
    color: #1f2937;
    margin: 24px 0 8px 0;
}

.policy-content p {
    margin-bottom: 16px;
    color: #4b5563;
}

.policy-content ul {
    margin: 16px 0;
    padding-left: 24px;
}

.policy-content li {
    margin-bottom: 8px;
    color: #4b5563;
}

.policy-content a {
    color: #2563eb;
}

.back-link {
    display: inline-block;
    margin-bottom: 24px;
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

.back-link:hover {
    text-decoration: underline;
}

.contact-box {
    background: #f8fafc;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 24px;
    margin-top: 32px;
}

.contact-box h3 {
    color: #1f2937;
    margin-bottom: 12px;
}

.response-time {
    margin-top: 16px;
    color: #6b7280;
    font-size: 0.9em;
}

footer {
    text-align: center;
    margin-top: 40px;
}

footer nav {
    margin-bottom: 16px;
}

footer nav a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    margin: 0 16px;
}

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

.copyright {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9em;
}

.last-updated {
    color: #6b7280;
    font-size: 0.9em;
    margin-top: 32px;
    padding-top: 16px;
    border-top: 1px solid #e5e7eb;
}

@media (max-width: 640px) {
    .container {
        padding: 24px 14px;
    }

    main {
        padding: 28px 22px;
    }

    h1 {
        font-size: 2.3em;
    }
}