/* Global Styles */
:root {
    --primary-color: #ff3b30;
    --primary-gradient: linear-gradient(135deg, #ff3b30 0%, #ff9500 100%);
    --secondary-color: #ff9500;
    --dark-color: #1c1c1e;
    --light-color: #f2f2f7;
    --text-color: #333;
    --border-radius: 10px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
    --section-padding: 60px 0;
    --heading-spacing: 30px;
    --success-color: #28ca41;
    --error-color: #ff3b30;
    --info-color: #0a84ff;
}

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

body {
    font-family: 'Inter', 'Arial', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: #fff;
    font-size: 16px;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 30px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    border-radius: var(--border-radius);
    padding: 15px 28px;
    font-weight: 600;
    transition: var(--transition);
    letter-spacing: 0.5px;
    font-size: 16px;
}

button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Icon Styles */
.fas, .fab, .far {
    margin-right: 10px;
    color: var(--primary-color);
    transition: var(--transition);
}

.feature-icon {
    font-size: 46px;
    margin-bottom: 20px;
    display: block;
    color: var(--primary-color);
    transition: var(--transition);
}

.fa-spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.benefits i.fas {
    color: var(--primary-color);
}

.footer-links i.fas,
.social-links i.fab {
    color: var(--secondary-color);
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: white;
    border-radius: 10px;
    padding: 15px 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transform: translateX(120%);
    transition: transform 0.3s ease;
    max-width: 350px;
}

.notification.show {
    transform: translateX(0);
}

.notification-content {
    display: flex;
    align-items: center;
}

.notification.success i {
    color: var(--success-color);
    margin-right: 10px;
    font-size: 20px;
}

.notification.error i {
    color: var(--error-color);
    margin-right: 10px;
    font-size: 20px;
}

.notification.info i {
    color: var(--info-color);
    margin-right: 10px;
    font-size: 20px;
}

.notification span {
    font-size: 14px;
    font-weight: 500;
}

/* Media Card Styles */
.media-card {
    width: 100%;
    max-width: 800px;
    margin: 20px auto;
    border-radius: 15px;
    background-color: white;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.media-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--primary-gradient);
    color: white;
}

.media-card-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 16px;
    padding: 5px;
    cursor: pointer;
}

.close-btn i {
    margin-right: 0;
    color: white;
}

.media-card-body {
    padding: 20px;
}

.video-preview {
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 20px;
}

.video-preview video {
    width: 100%;
    display: block;
}

.images-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.image-item {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.image-item img {
    width: 100%;
    display: block;
    height: auto;
}

.image-download-btn {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
    border-radius: 20px;
    padding: 5px 15px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-item:hover .image-download-btn {
    opacity: 1;
}

.media-info {
    margin-bottom: 20px;
}

.media-info p {
    margin-bottom: 10px;
    font-size: 14px;
}

.download-actions {
    display: flex;
    justify-content: center;
}

.download-again-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(255, 59, 48, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.download-again-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 59, 48, 0.4);
    color: white;
}

.download-again-btn i {
    margin-right: 8px;
    color: white;
}

/* Animation Classes */
.animate__animated {
    animation-duration: 0.5s;
}

.animate__fadeIn {
    animation-name: fadeIn;
}

.animate__fadeOut {
    animation-name: fadeOut;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(20px);
    }
}

/* Header Styles */
header {
    background-color: #fff;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    padding: 22px 0;
    position: relative;
    z-index: 1000;
}

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

.logo h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
}

.logo h1 a {
    color: var(--dark-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--primary-color);
    font-weight: 800;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-right: 30px;
}

nav ul li:last-child {
    margin-right: 0;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 0 60px;
    background: linear-gradient(135deg, #f9f9f9 0%, var(--light-color) 100%);
    position: relative;
    margin-bottom: 30px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 59, 48, 0.05);
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255, 149, 0, 0.05);
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 42px;
    margin-bottom: 30px;
    color: var(--dark-color);
    font-weight: 800;
    line-height: 1.2;
}

.hero h2 i {
    font-size: 42px;
    vertical-align: middle;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.download-form {
    display: flex;
    max-width: 900px;
    margin: 0 auto;
    background-color: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

.download-form:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.download-form input {
    flex: 1;
    padding: 20px 24px;
    border: none;
    font-size: 16px;
}

.download-form input:focus {
    outline: none;
}

.download-form input::placeholder {
    color: #999;
}

.paste-btn {
    background-color: #f5f5f5;
    color: var(--text-color);
    border-radius: 0;
    font-weight: 600;
}

.paste-btn:hover {
    background-color: #e5e5e5;
}

.paste-btn i {
    color: var(--primary-color);
}

.download-btn {
    background: var(--primary-gradient);
    color: white;
    border-radius: 0;
    font-weight: 600;
    padding: 0 35px;
}

.download-btn:hover {
    background: linear-gradient(135deg, #ff2d21 0%, #ff8600 100%);
}

.download-btn i {
    color: white;
}

.hero-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 100'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,32L60,37.3C120,43,240,53,360,58.7C480,64,600,64,720,58.7C840,53,960,43,1080,42.7C1200,43,1320,53,1380,58.7L1440,64L1440,100L1380,100C1320,100,1200,100,1080,100C960,100,840,100,720,100C600,100,480,100,360,100C240,100,120,100,60,100L0,100Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-repeat: no-repeat;
}

/* Features Section */
.features {
    padding: var(--section-padding);
    background-color: #fff;
    position: relative;
    z-index: 1;
    margin-top: 0;
    border-radius: 0;
}

.features .container {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.feature-card {
    flex: 1;
    text-align: center;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    background-color: #fff;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
    z-index: -1;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    color: var(--secondary-color);
}

.feature-card h3 {
    margin-bottom: 18px;
    color: var(--dark-color);
    font-size: 24px;
    font-weight: 700;
}

.feature-card p {
    color: #666;
    line-height: 1.7;
}

/* Best Service Section */
.best-service {
    padding: var(--section-padding);
    background: linear-gradient(135deg, #f9f9f9 0%, var(--light-color) 100%);
    text-align: center;
    position: relative;
}

.best-service::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 59, 48, 0.05);
}

.best-service h2 {
    font-size: 36px;
    margin-bottom: 30px;
    color: var(--dark-color);
    font-weight: 800;
    position: relative;
    display: inline-block;
}

.best-service h2 i {
    color: var(--secondary-color);
    font-size: 36px;
    vertical-align: middle;
    margin-right: 10px;
}

.best-service p {
    max-width: 900px;
    margin: 30px auto 0;
    font-size: 18px;
    line-height: 1.7;
    background-color: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* How-to Section */
.how-to {
    padding: var(--section-padding);
    background-color: #fff;
}

.how-to h2 {
    font-size: 38px;
    margin-bottom: var(--heading-spacing);
    color: var(--dark-color);
    font-weight: 800;
    text-align: center;
    position: relative;
    display: inline-block;
}

.how-to h3 {
    font-size: 26px;
    margin: 40px 0 25px;
    color: var(--primary-color);
    font-weight: 700;
}

.steps-list {
    margin-bottom: 40px;
}

.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
    background-color: #f9f9f9;
    padding: 20px 25px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.step-item:hover {
    transform: translateX(5px);
    box-shadow: var(--box-shadow);
}

.step-number {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 20px;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content strong {
    display: block;
    margin-bottom: 5px;
    font-size: 18px;
}

.benefits {
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: var(--border-radius);
    margin: 30px 0;
    box-shadow: var(--box-shadow);
}

.benefits p {
    font-weight: 600;
    margin-bottom: 20px;
    font-size: 18px;
}

.benefits ul li {
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    transition: var(--transition);
}

.benefits ul li:hover {
    transform: translateX(5px);
}

.benefits ul li i {
    position: absolute;
    left: 0;
    top: 5px;
}

/* Mobile & PC Instructions */
.mobile-instructions, .pc-instructions {
    padding: var(--section-padding);
    background-color: #fff;
}

.mobile-instructions h3, .pc-instructions h3 {
    font-size: 28px;
    margin-bottom: 30px;
    color: var(--dark-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.mobile-instructions p, .pc-instructions p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.platform-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 30px;
}

.platform-tags span {
    background-color: #f5f5f5;
    padding: 10px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    color: var(--dark-color);
    transition: var(--transition);
    cursor: default;
}

.platform-tags span:hover {
    background-color: var(--light-color);
}

.platform-tags span i {
    color: var(--primary-color);
}

/* Two Column Layout */
.two-columns {
    display: flex;
    gap: 40px;
    align-items: center;
}

.column {
    flex: 1;
}

/* Phone & Desktop Mockups */
.phone-mockup, .desktop-mockup {
    background-color: var(--dark-color);
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    position: relative;
    max-width: 320px;
    margin: 0 auto;
}

.phone-screen, .desktop-screen {
    background-color: #fff;
    border-radius: 30px;
    overflow: hidden;
    height: 550px;
}

.desktop-mockup {
    border-radius: 20px;
    max-width: 500px;
}

.desktop-screen {
    height: 320px;
}

.app-interface, .browser-interface {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header, .browser-header {
    padding: 15px;
    background-color: #f5f5f5;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
}

.browser-actions {
    display: flex;
    gap: 8px;
}

.browser-actions span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #ccc;
}

.browser-actions span:nth-child(1) {
    background-color: #ff5f57;
}

.browser-actions span:nth-child(2) {
    background-color: #ffbd2e;
}

.browser-actions span:nth-child(3) {
    background-color: #28ca41;
}

.browser-address {
    flex: 1;
    background-color: #e5e5e5;
    margin: 0 15px;
    padding: 5px 10px;
    border-radius: 5px;
    display: flex;
    align-items: center;
    font-size: 12px;
}

.app-content, .browser-content {
    flex: 1;
    padding: 15px;
    overflow: hidden;
}

.video-placeholder {
    background: linear-gradient(135deg, #f5f5f5 0%, #e5e5e5 100%);
    height: 70%;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-placeholder i {
    font-size: 40px;
    opacity: 0.5;
}

.video-actions {
    display: flex;
    justify-content: space-around;
    margin-top: 20px;
}

.video-actions i {
    font-size: 24px;
}

.site-header, .site-form, .site-features {
    background-color: #f5f5f5;
    height: 30px;
    margin-bottom: 15px;
    border-radius: 5px;
}

.site-form {
    height: 50px;
}

.site-features {
    height: 120px;
}

/* FAQ Section */
.faq {
    padding: var(--section-padding);
    background-color: #fff;
}

.faq h2 {
    font-size: 38px;
    margin-bottom: var(--heading-spacing);
    color: var(--dark-color);
    font-weight: 800;
    text-align: center;
    position: relative;
    display: inline-block;
}

.faq h2 i {
    color: var(--secondary-color);
    font-size: 36px;
    vertical-align: middle;
    margin-right: 10px;
}

.accordion {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.faq-item {
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 15px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    transform: translateY(-3px);
}

.faq-header {
    padding: 20px 25px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-header h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark-color);
}

.faq-header h4 i {
    color: var(--primary-color);
    font-size: 18px;
    margin-right: 10px;
}

.toggle-icon {
    transition: var(--transition);
}

.faq-content {
    padding: 0 25px 20px;
    display: none;
}

.faq-item.active .toggle-icon {
    transform: rotate(180deg);
}

.faq-item.active .faq-content {
    display: block;
}

/* Footer */
footer {
    background-color: var(--dark-color);
    color: #fff;
    padding: 50px 0 25px;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 59, 48, 0.05);
    z-index: 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    position: relative;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    width: 100%;
}

.footer-links a {
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    color: #fff;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--secondary-color);
}

.language-selector-container {
    position: relative;
    margin-left: 20px;
}

.language-select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 5px;
    padding: 10px 35px 10px 15px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23ff9500' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    background-size: 16px;
}

.language-select:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.language-select:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--secondary-color);
}

.language-select option {
    background-color: #333;
    color: #fff;
    padding: 10px;
}

@media (max-width: 768px) {
    .language-select {
        padding: 8px 30px 8px 12px;
        font-size: 14px;
    }
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
    opacity: 0.7;
}

.copyright i {
    color: var(--secondary-color);
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top i {
    color: white;
    margin: 0;
}

/* Responsive Styles */
@media (max-width: 1200px) {
    .container {
        padding: 0 20px;
    }
    
    .hero h2 {
        font-size: 42px;
    }
    
    .hero h2 i {
        font-size: 38px;
    }
}

@media (max-width: 992px) {
    :root {
        --section-padding: 50px 0;
        --heading-spacing: 30px;
    }
    
    .features .container {
        flex-direction: column;
        gap: 30px;
    }
    
    .feature-card {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .hero h2 {
        font-size: 38px;
    }
    
    .best-service h2, .how-to h2, .faq h2 {
        font-size: 32px;
    }
    
    .two-columns {
        flex-direction: column;
        gap: 50px;
    }
    
    .column {
        width: 100%;
    }
    
    .phone-mockup, .desktop-mockup {
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 40px 0;
        --heading-spacing: 25px;
    }
    
    header {
        padding: 15px 0;
    }
    
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    .logo h1 {
        font-size: 22px;
    }
    
    nav ul {
        justify-content: center;
    }
    
    .download-form {
        flex-direction: column;
        max-width: 100%;
    }
    
    .download-form input, 
    .paste-btn, 
    .download-btn {
        width: 100%;
        border-radius: var(--border-radius);
        margin-bottom: 10px;
    }
    
    .best-service p {
        padding: 25px;
        font-size: 16px;
    }
    
    .feature-icon {
        font-size: 40px;
    }
    
    .hero {
        padding: 50px 0 30px;
    }
    
    .features, .best-service, .how-to, .faq {
        padding: 40px 0;
    }
    
    .mobile-instructions, .pc-instructions {
        padding: 40px 0;
    }
    
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .language-select {
        padding: 8px 30px 8px 12px;
        font-size: 14px;
    }
}

@media (max-width: 576px) {
    .hero h2 {
        font-size: 28px;
    }
    
    .hero h2 i {
        font-size: 26px;
    }
    
    .how-to h2, .best-service h2, .faq h2 {
        font-size: 26px;
    }
    
    .how-to h3, .mobile-instructions h3, .pc-instructions h3 {
        font-size: 22px;
    }
    
    .language-select {
        width: 180px;
        max-height: 250px;
    }
    
    .language-selector {
        padding: 6px 10px;
        font-size: 14px;
    }
    
    .language-selector i {
        font-size: 14px;
    }
    
    .feature-icon {
        font-size: 36px;
    }
    
    .footer-links {
        margin-bottom: 20px;
    }
    
    .step-item {
        flex-direction: column;
    }
    
    .step-number {
        margin-bottom: 15px;
    }
}

/* 进度条样式 */
.progress-bar-container {
    width: 100%;
    max-width: 900px;
    margin: 20px auto;
    padding: 15px;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: opacity 0.3s ease;
    opacity: 0;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background-color: #f0f0f0;
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0;
    background: var(--primary-gradient);
    border-radius: 5px;
    transition: width 0.3s ease;
}

.progress-text {
    margin-top: 10px;
    font-size: 14px;
    color: var(--dark-color);
    text-align: center;
    font-weight: 500;
}

/* 中文界面适配 */
.test-btn {
    margin-top: 10px;
    width: 100%;
    background-color: #0a84ff;
    color: white;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.test-btn:hover {
    background-color: #0969da;
}

.test-btn i {
    color: white;
}

/* 内容类型标记样式 */
.content-badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 600;
    margin-left: 10px;
    vertical-align: middle;
}

.content-badge.real {
    background-color: var(--success-color);
    color: white;
}

.content-badge.backup {
    background-color: var(--info-color);
    color: white;
}

/* 添加模态框样式 */
.download-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.download-modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: #fff;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    position: relative;
}

.close-button {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 24px;
    color: #666;
    cursor: pointer;
    transition: color 0.3s;
}

.close-button:hover {
    color: #f44336;
}

.video-preview {
    margin: 15px 0;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}

.video-preview img {
    width: 100%;
    display: block;
    border-radius: 8px;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.play-button i {
    color: white;
    font-size: 24px;
}

.preview-video {
    width: 100%;
    border-radius: 8px;
}

.video-info, .image-info {
    margin: 15px 0;
    padding: 10px;
    background-color: #f5f5f5;
    border-radius: 8px;
}

.download-options {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
}

.download-options button {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.download-now-btn, .download-all-btn {
    background-color: #4CAF50;
    color: white;
    flex-grow: 1;
    margin-right: 10px;
}

.download-now-btn:hover, .download-all-btn:hover {
    background-color: #3e8e41;
}

.copy-url-btn {
    background-color: #2196F3;
    color: white;
    flex-grow: 1;
}

.copy-url-btn:hover {
    background-color: #0b7dda;
}

/* 图片模态框样式 */
.images-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
    margin: 15px 0;
}

.image-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1;
}

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}

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

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    padding: 5px;
    opacity: 0;
    transition: opacity 0.3s;
}

.image-item:hover .image-overlay {
    opacity: 1;
}

.download-image-btn {
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
}

/* 大图预览 */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.lightbox.show {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    height: 80vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.close-lightbox {
    position: absolute;
    top: -40px;
    right: 0;
    font-size: 30px;
    color: white;
    cursor: pointer;
}

.lightbox-controls {
    position: absolute;
    bottom: -40px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
}

.lightbox-controls button {
    background: none;
    border: none;
    color: white;
    font-size: 24px;
    padding: 0 20px;
    cursor: pointer;
}

.lightbox-controls button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.image-counter {
    margin: 0 15px;
    font-size: 16px;
}

/* Footer link active state */
.footer-links a.active {
    color: var(--secondary-color);
    font-weight: 600;
}

/* Page Header */
.page-header {
    background: var(--primary-gradient);
    padding: 60px 0;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    z-index: 0;
}

.page-header h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* About Content */
.about-content {
    padding: var(--section-padding);
}

.about-section {
    margin-bottom: 50px;
    padding: 30px;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.about-section h2 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-section h2 i {
    color: var(--secondary-color);
}

.about-section p {
    margin-bottom: 20px;
    line-height: 1.7;
}

.about-section p:last-child {
    margin-bottom: 0;
}

/* Contact Content */
.contact-content {
    padding: var(--section-padding);
}

.contact-info {
    padding: 30px;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    height: 100%;
}

.contact-methods {
    margin-top: 30px;
}

.contact-method {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-method:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.contact-method i {
    font-size: 24px;
    color: var(--secondary-color);
    margin-top: 5px;
}

.contact-method h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.contact-method p {
    margin-bottom: 10px;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background-color: #f5f5f5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.faq-link {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.faq-link h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.faq-link h3 i {
    color: var(--secondary-color);
}

.contact-form-container {
    padding: 30px;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    height: 100%;
}

.contact-form {
    margin-top: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
    border-radius: var(--border-radius);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.1);
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-container input {
    width: auto;
}

.submit-btn, .chat-btn {
    background: var(--primary-gradient);
    color: #fff;
    border: none;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.submit-btn:hover, .chat-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(var(--primary-rgb), 0.3);
}

.chat-btn {
    margin-top: 10px;
    padding: 10px 20px;
    font-size: 14px;
}

.response-time {
    margin-top: 40px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: var(--border-radius);
    text-align: center;
}

.response-time h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.response-time h3 i {
    color: var(--secondary-color);
}

/* Legal Content */
.legal-content {
    padding: var(--section-padding);
}

.legal-section {
    padding: 30px;
    background-color: #fff;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.last-updated {
    margin-bottom: 20px;
    font-style: italic;
    color: #777;
}

.legal-intro {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.legal-section h2 {
    font-size: 24px;
    color: var(--primary-color);
    margin: 30px 0 15px;
}

.legal-section h3 {
    font-size: 18px;
    color: var(--text-color);
    margin: 25px 0 15px;
}

.legal-section p {
    margin-bottom: 15px;
    line-height: 1.7;
}

.legal-section ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.legal-section ul li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.legal-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.legal-section a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* How to download page styles */
.how-to-content {
    padding: var(--section-padding);
    background-color: #fff;
}

.intro-text {
    max-width: 900px;
    margin: 0 auto 40px;
    text-align: center;
}

.download-steps {
    max-width: 900px;
    margin: 0 auto 40px;
}

.benefits-section {
    max-width: 900px;
    margin: 0 auto 40px;
}

.device-instructions {
    margin-top: 60px;
}

.device-instructions h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: var(--dark-color);
}

.try-now-section {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: var(--border-radius);
}

.try-now-section h2 {
    margin-bottom: 20px;
    font-size: 32px;
    color: var(--dark-color);
}

.cta-button {
    display: inline-block;
    margin-top: 20px;
    padding: 15px 30px;
    background: var(--primary-gradient);
    color: #fff;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    color: #fff;
}

/* HD download page styles */
.hd-content {
    padding: var(--section-padding);
    background-color: #fff;
}

.features-section h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: var(--dark-color);
}

.features {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 60px;
}

.quality-section {
    margin-top: 60px;
}

.quality-section h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: var(--dark-color);
}

.quality-comparison {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.quality-item {
    flex: 1;
    max-width: 400px;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    background-color: #fff;
}

.quality-item.featured {
    border: 2px solid var(--primary-color);
    transform: translateY(-10px);
}

.quality-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

.quality-badge {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background-color: var(--primary-color);
}

.quality-item ul {
    list-style: none;
}

.quality-item ul li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.quality-item ul li i {
    margin-right: 10px;
}

.quality-item ul li i.fa-check {
    color: var(--success-color);
}

.quality-item ul li i.fa-times {
    color: var(--error-color);
}

.faq-section {
    margin-top: 60px;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 32px;
    color: var(--dark-color);
}

/* Responsive styles for new pages */
@media (max-width: 992px) {
    .features {
        flex-direction: column;
    }
    
    .quality-comparison {
        flex-direction: column;
        align-items: center;
    }
    
    .quality-item.featured {
        transform: none;
    }
}

@media (max-width: 768px) {
    .intro-text h2, 
    .device-instructions h2, 
    .try-now-section h2,
    .features-section h2,
    .quality-section h2,
    .faq-section h2 {
        font-size: 28px;
    }
    
    .quality-item {
        width: 100%;
    }
}

/* 页面底部的语言选择器特殊处理 */
footer .language-select {
    bottom: 100%;
    top: auto;
    left: auto;
    right: 0;
}

/* 确保下拉菜单在页面底部时也能完全显示 */
@media (max-width: 768px) {
    .language-select {
        max-height: 200px;
    }
}