/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-red: #FF4B4B;
    --primary-yellow: #FEE500;
    --primary-black: #1D1D1F;
    --bg-cream: #FFF9F0;
    --text-dark: #1D1D1F;
    --text-light: #666;
    --white: #FFFFFF;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-cream);
    color: var(--text-dark);
    line-height: 1.6;
}

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

/* Navigation Bar */
.navbar {
    background-color: var(--primary-black);
    color: var(--white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.nav-brand h1 {
    font-size: 1.8rem;
    color: var(--primary-red);
    font-weight: bold;
}

.nav-brand .subtitle {
    font-size: 1rem;
    color: var(--primary-yellow);
}

.nav-brand a {
    text-decoration: none;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-yellow);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-red) 0%, #FF6B6B 100%);
    color: var(--white);
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-yellow);
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.download-section {
    margin-top: 2rem;
}

.download-btn {
    display: inline-block;
    background-color: var(--primary-yellow);
    color: var(--primary-black);
    padding: 1rem 2.5rem;
    font-size: 1.2rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.download-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Section Styles */
section {
    padding: 4rem 0;
}

section h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-black);
    font-weight: bold;
}

/* Value Propositions */
.value-props {
    background-color: var(--white);
}

.props-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.prop-card {
    background-color: var(--bg-cream);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 2px solid transparent;
    transition: transform 0.3s, border-color 0.3s;
}

.prop-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-red);
}

.prop-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.prop-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-black);
}

.prop-card p {
    color: var(--text-light);
}

/* Use Cases */
.use-cases {
    background-color: var(--bg-cream);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.case-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.case-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-red);
}

/* Features Section */
.features {
    background-color: var(--white);
}

.feature-section {
    margin-bottom: 3rem;
    padding: 2rem;
    background-color: var(--bg-cream);
    border-radius: 15px;
}

.feature-section h3 {
    font-size: 1.8rem;
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.feature-section h4 {
    font-size: 1.3rem;
    color: var(--primary-black);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.feature-section ul {
    list-style-position: inside;
    margin-left: 1rem;
}

.feature-section li {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* Technical Specifications */
.technical {
    background-color: var(--bg-cream);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.tech-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.tech-card h3 {
    font-size: 1.5rem;
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.tech-card ul {
    list-style-position: inside;
}

.tech-card li {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

/* User Guide */
.user-guide {
    background-color: var(--white);
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-cream);
    border-radius: 15px;
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: var(--primary-red);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-black);
}

/* Quota System */
.quota {
    background-color: var(--bg-cream);
}

.quota-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.quota-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.quota-card h3 {
    font-size: 1.5rem;
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.quota-card ul {
    list-style-position: inside;
}

.quota-card li {
    margin-bottom: 0.5rem;
}

/* FAQ Section */
.faq {
    background-color: var(--white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-cream);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 10px;
    border-left: 4px solid var(--primary-red);
}

.faq-item h3 {
    font-size: 1.2rem;
    color: var(--primary-black);
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: var(--text-light);
}

.faq-item a {
    color: var(--primary-red);
    text-decoration: none;
}

.faq-item a:hover {
    text-decoration: underline;
}

/* Contact Section */
.contact {
    background-color: var(--bg-cream);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.contact-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.contact-card h3 {
    font-size: 1.5rem;
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.contact-card a {
    color: var(--primary-red);
    text-decoration: none;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* Privacy Policy Page */
.privacy-main {
    padding: 4rem 0;
    background-color: var(--white);
}

.privacy-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--primary-red);
}

.privacy-header h1 {
    font-size: 3rem;
    color: var(--primary-black);
    margin-bottom: 1rem;
}

.last-updated,
.effective-date {
    color: var(--text-light);
    font-size: 1rem;
}

.privacy-section {
    margin-bottom: 3rem;
    padding: 2rem;
    background-color: var(--bg-cream);
    border-radius: 15px;
}

.privacy-section h2 {
    font-size: 2rem;
    color: var(--primary-red);
    margin-bottom: 1.5rem;
    text-align: left;
}

.privacy-section h3 {
    font-size: 1.5rem;
    color: var(--primary-black);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.privacy-section h4 {
    font-size: 1.2rem;
    color: var(--primary-black);
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.privacy-section p {
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.privacy-section ul,
.privacy-section ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.privacy-section li {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.privacy-section a {
    color: var(--primary-red);
    text-decoration: none;
}

.privacy-section a:hover {
    text-decoration: underline;
}

.privacy-footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-cream);
    border-radius: 15px;
    margin-top: 3rem;
}

/* Footer */
.footer {
    background-color: var(--primary-black);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.footer-section h4 {
    color: var(--primary-yellow);
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--primary-yellow);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

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

    section h2 {
        font-size: 2rem;
    }

    .props-grid,
    .cases-grid,
    .tech-grid,
    .quota-info,
    .contact-info {
        grid-template-columns: 1fr;
    }

    .guide-steps {
        grid-template-columns: 1fr;
    }

    .privacy-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 4rem 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .download-btn {
        padding: 0.8rem 2rem;
        font-size: 1rem;
    }
}