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

:root {
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --secondary-color: #10b981;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-radius: 12px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-dark) 100%);
    padding: 40px 0 30px;
    text-align: center;
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.update-time {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 10px;
}

.hero {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%);
    padding: 80px 0;
    text-align: center;
}

.hero-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 16px 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    cursor: pointer;
    border: none;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.features {
    padding: 80px 0;
    background: var(--bg-dark);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
    color: var(--text-primary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.screenshots {
    padding: 80px 0;
    background: var(--bg-dark);
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.screenshot-grid img {
    width: 100%;
    border-radius: var(--border-radius);
    border: 1px solid rgba(59, 130, 246, 0.2);
    transition: all 0.3s ease;
}

.screenshot-grid img:hover {
    transform: scale(1.02);
    border-color: var(--primary-color);
}

.query-info {
    padding: 80px 0;
    background: var(--bg-dark);
}

.query-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.query-item {
    background: var(--bg-card);
    padding: 25px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: var(--text-primary);
    font-weight: 600;
    transition: all 0.3s ease;
}

.query-item:hover {
    border-color: var(--secondary-color);
    background: rgba(16, 185, 129, 0.1);
}

.notice {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
}

.notice-box {
    background: var(--bg-dark);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(239, 68, 68, 0.3);
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.notice-box h3 {
    color: #ef4444;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.notice-list {
    padding-left: 20px;
    margin: 0;
}

.notice-list li {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.notice-list li:last-child {
    margin-bottom: 0;
}

.pricing {
    padding: 80px 0;
    background: var(--bg-dark);
}

.price-card {
    background: var(--bg-card);
    padding: 50px;
    border-radius: var(--border-radius);
    text-align: center;
    max-width: 400px;
    margin: 0 auto;
    border: 2px solid rgba(59, 130, 246, 0.3);
}

.price-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 30px;
}

.price span {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.price-features {
    list-style: none;
    margin-bottom: 30px;
}

.price-features li {
    padding: 10px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.price-features li:last-child {
    border-bottom: none;
}

.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, var(--bg-card) 100%);
}

.contact-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-info {
    max-width: 500px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background: var(--bg-dark);
    border-radius: 8px;
    margin-bottom: 15px;
}

.contact-label {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 100px;
}

.contact-value {
    color: var(--secondary-color);
    word-break: break-all;
}

.footer {
    background: var(--bg-card);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

@media (max-width: 768px) {
    .header {
        padding: 30px 0 20px;
    }

    .logo {
        font-size: 1.8rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .hero {
        padding: 50px 0;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .cta-button {
        padding: 14px 30px;
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .features,
    .screenshots,
    .query-info,
    .notice,
    .pricing,
    .contact {
        padding: 50px 0;
    }

    .feature-card {
        padding: 20px;
    }

    .screenshot-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .price-card {
        padding: 30px;
    }

    .price {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.5rem;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .screenshot-grid {
        grid-template-columns: 1fr;
    }
}