/* Nunito Font Face Declarations */
@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-Italic.ttf') format('truetype');
    font-weight: 400;
    font-style: italic;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-Light.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-LightItalic.ttf') format('truetype');
    font-weight: 300;
    font-style: italic;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-Medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-MediumItalic.ttf') format('truetype');
    font-weight: 500;
    font-style: italic;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-SemiBoldItalic.ttf') format('truetype');
    font-weight: 600;
    font-style: italic;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-BoldItalic.ttf') format('truetype');
    font-weight: 700;
    font-style: italic;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-ExtraBold.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-ExtraBoldItalic.ttf') format('truetype');
    font-weight: 800;
    font-style: italic;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-Black.ttf') format('truetype');
    font-weight: 900;
    font-style: normal;
}

@font-face {
    font-family: 'Nunito';
    src: url('Assets/Font/Nunito-BlackItalic.ttf') format('truetype');
    font-weight: 900;
    font-style: italic;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', 'STHeiti', '华文黑体', sans-serif;
    line-height: 1.6;
    color: #000000;
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #000000;
}

.nav-logo-img {
    width: 32px;
    height: 32px;
    margin-right: 0.5rem;
}

.nav-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #000000;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #000000;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.lang-btn {
    background: transparent;
    border: 2px solid #cccccc;
    color: #666666;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: 'Nunito', sans-serif;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    border-color: #000000;
    color: #000000;
}

.lang-btn.active {
    background: #000000;
    border-color: #000000;
    color: white;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: #ffffff;
    color: #000000;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}


.highlight {
    color: #000000;
    position: relative;
    display: inline;
}

.typewriter-text {
    display: inline;
}

.cursor {
    display: inline;
    font-weight: normal;
    animation: blink 1s infinite;
    font-size: 1.2em;
    vertical-align: baseline;
    margin: 0;
    padding: 0;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #666666;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-family: 'Nunito', sans-serif;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(45deg, #000000, #333333);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.6);
}

.btn-secondary {
    background: transparent;
    color: #000000;
    border: 2px solid #000000;
}

.btn-secondary:hover {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

/* Illustration Showcase */
.illustration-showcase {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 600px;
}

.hero-illustration {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 16px;
}



/* Features Section */
.features {
    padding: 0 0 80px 0;
    background: #ffffff;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    color: #000000;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: #666666;
    max-width: 600px;
    margin: 0 auto;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    background: transparent;
    padding: 0 2rem;
    height: 500px;
}

.feature-row-left .feature-image {
    order: 1;
}

.feature-row-left .feature-content {
    order: 2;
}

.feature-row-right .feature-image {
    order: 2;
}

.feature-row-right .feature-content {
    order: 1;
    padding-left: 80px;
}

.feature-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: 12px;
}

.feature-content {
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon-svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0);
}

.feature-content h3 {
    font-size: 2rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    color: #000000;
    margin-bottom: 1rem;
}

.feature-content p {
    color: #666666;
    line-height: 1.6;
    font-size: 1.125rem;
}

/* Feedback Section */
.feedback {
    padding: 80px 0;
    background: #f4f4f4;
}

.feedback-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.feedback-content {
    text-align: left;
}

.feedback-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    color: #000000;
    margin-bottom: 1.5rem;
}

.feedback-content p {
    color: #666666;
    line-height: 1.6;
    font-size: 1.125rem;
}

.contact-info {
    margin-top: 2rem;
}

.contact-email {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
    color: #333333;
    margin: 0;
}

.contact-email i {
    color: #000000;
    font-size: 1.25rem;
}

.contact-email span {
    color: #000000;
    font-weight: 500;
}

.feedback-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.feedback-img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: 12px;
}

/* Download Section */
.download {
    padding: 80px 0;
    background: linear-gradient(135deg, #000000 0%, #333333 100%);
    color: white;
}

.download-content {
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    font-family: 'Nunito', sans-serif;
    margin-bottom: 1rem;
}

.download-content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 3rem;
}

.download-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.qr-code {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.qr-image {
    width: 200px;
    height: 200px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.qr-image:hover {
    transform: scale(1.05);
}

.qr-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-align: center;
}

.qr-placeholder {
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.qr-placeholder i {
    font-size: 3rem;
    opacity: 0.7;
}

.qr-placeholder span {
    font-size: 0.9rem;
    opacity: 0.8;
}

.download-buttons {
    text-align: center;
}

.download-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Footer */
.footer {
    background: #000000;
    color: white;
    padding: 60px 0 20px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 1rem;
}

.footer-logo i {
    margin-right: 0.5rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    font-family: 'Nunito', sans-serif;
    margin-bottom: 1rem;
    color: #ffffff;
}

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

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

.footer-section ul li a {
    color: #cccccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffffff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333333;
    color: #cccccc;
}

/* Animations */

/* Responsive Design */
@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .download-options {
        flex-direction: column;
        gap: 2rem;
    }
    
    .feature-row {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .feature-row-left .feature-image,
    .feature-row-left .feature-content,
    .feature-row-right .feature-image,
    .feature-row-right .feature-content {
        order: unset;
    }
    
    .feature-content {
        text-align: center;
    }
    
    .feedback-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .feedback-content {
        text-align: center;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .feedback-content h2 {
        font-size: 2rem;
    }
    
    .download-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .illustration-showcase {
        height: 400px;
    }
    
    .hero-illustration {
        max-width: 90%;
        max-height: 90%;
    }
    
    .feature-img {
        max-height: 200px;
    }
    
    .feature-content h3 {
        font-size: 1.5rem;
    }
    
    .feature-content p {
        font-size: 1rem;
    }
    
    .feedback-content h2 {
        font-size: 1.5rem;
    }
    
    .feedback-content p {
        font-size: 1rem;
    }
    
    .feedback-img {
        max-height: 300px;
    }
    
    .container {
        padding: 0 15px;
    }
}