/* Real X Website Styles */
:root {
    /* Colors */
    --primary: #3f51b5;
    --primary-light: #757de8;
    --primary-dark: #002984;
    --secondary: #ff4081;
    --secondary-light: #ff79b0;
    --secondary-dark: #c60055;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --medium-gray: #9e9e9e;
    --dark-gray: #212121;
    --black: #000000;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-md);
}

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

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    border: none;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background-color: var(--primary-light);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-tertiary {
    background-color: var(--white);
    color: var(--dark-gray);
    border: 2px solid var(--light-gray);
}

.btn-tertiary:hover {
    background-color: var(--light-gray);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    margin-bottom: var(--spacing-xs);
    color: var(--dark-gray);
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--medium-gray);
    max-width: 800px;
    margin: 0 auto;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.navbar-brand {
    display: flex;
    align-items: center;
}

.navbar-logo {
    height: 40px;
}

.navbar-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    transition: left 0.3s ease;
}

.navbar-item {
    position: relative;
    margin: 0 var(--spacing-xs);
}

.navbar-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--dark-gray);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.navbar-link:hover, .navbar-link.active {
    color: var(--primary);
}

.navbar-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    width: 200px;
    background-color: var(--white);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
    z-index: 101;
}

.navbar-item:hover .navbar-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--dark-gray);
    font-weight: 500;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
}

.dropdown-item:hover {
    background-color: var(--light-gray);
    color: var(--primary);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-gray);
    cursor: pointer;
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.language-option {
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-weight: 500;
    color: var(--medium-gray);
}

.language-option:hover {
    color: var(--primary);
    background-color: var(--light-gray);
}

.language-option.active {
    color: var(--primary);
    background-color: var(--light-gray);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 70px;
    overflow: hidden;
    background-color: transparent;
    color: var(--white);
}

.hero-content {
    max-width: 600px;
    z-index: 2;
}
.hero-title {
  font-size: clamp(2.8rem, 6vw, 4.5rem); /* 320px 到 1920px 自适应字号 */
  font-weight: 800;
  line-height: 1.1;
  margin: 0 0 0.4em;
  text-shadow: var(--hero-shadow);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.2vw, 2rem);
  font-weight: 500;
  color: rgb(235, 231, 13);
  margin: 0 0 0.6em;
  letter-spacing: .3px;
  text-shadow: 0 2px 4px rgba(235, 231, 13, 0.25);
}

.hero-description {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  font-weight: 300;
  margin: 0;
  max-width: 46ch;            /* 保证段落可读 */
  color: rgba(255, 255, 255, .9);
  text-shadow: 0 2px 4px rgba(0, 0, 0, .25);
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.8);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
}

.hero-visual-element {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
    border-radius: 50%;
    filter: blur(50px);
}

.hero-bg-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-sphere {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
    filter: blur(20px);
}

.hero-sphere-1 {
    top: -100px;
    right: 10%;
}

.hero-sphere-2 {
    bottom: -150px;
    left: 5%;
}

.hero-sphere-3 {
    top: 30%;
    right: -100px;
}

.hero-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(to right, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero-dots {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(rgba(255, 255, 255, 0.2) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.2;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 1.5rem;
    animation: bounce 2s infinite;
    cursor: pointer;
    z-index: 2;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

/* Business Lines Section */
.business-lines {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

.business-lines-container {
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: var(--spacing-md);
}

.business-line {
    flex: 1;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.business-line:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.business-line-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.business-line-icon i {
    font-size: 24px;
    color: var(--white);
}

.business-line h3 {
    margin-bottom: var(--spacing-xs);
}

.business-line p {
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
}

.business-line-features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.business-line-features li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--light-gray);
}

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

.business-line-link {
    display: inline-block;
    margin-top: auto;
    font-weight: 600;
}

.business-line-link i {
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.business-line-link:hover i {
    transform: translateX(5px);
}

.business-line-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.5rem;
}

/* Key Metrics Section */
.key-metrics {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

.metrics-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.metric {
    text-align: center;
}

.metric-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.metric-label {
    font-size: 1.2rem;
    color: var(--dark-gray);
}

/* Compliance Section */
.compliance {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

.compliance-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.compliance-feature {
    text-align: center;
}

.compliance-icon {
    width: 80px;
    height: 80px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
}

.compliance-icon i {
    font-size: 32px;
    color: var(--white);
}

.compliance-feature h3 {
    margin-bottom: var(--spacing-sm);
}

.compliance-feature p {
    color: var(--medium-gray);
}

/* Partners Section */
.partners {
    padding: var(--spacing-xl) 0;
    background-color: var(--light-gray);
}

.partners-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.partners-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.partner {
    background-color: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    height: 100px;
    transition: all var(--transition-normal);
}

.partner:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.partner-logo {
    max-width: 80%;
    max-height: 60px;
    filter: grayscale(100%);
    transition: filter var(--transition-normal);
}

.partner:hover .partner-logo {
    filter: grayscale(0%);
}

/* Roadmap Section */
.roadmap {
    padding: var(--spacing-xl) 0;
    background-color: var(--white);
}

.roadmap-container {
    position: relative;
    padding: var(--spacing-lg) 0;
}

.roadmap-timeline {
    position: relative;
}

.roadmap-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background-color: var(--primary-light);
    border-radius: var(--radius-lg);
}

.roadmap-item {
    position: relative;
    display: flex;
    margin-bottom: var(--spacing-xl);
    align-items: center;
}

.roadmap-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.roadmap-dot {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 20px;
    background-color: var(--primary);
    border-radius: 50%;
    z-index: 1;
}

.roadmap-date {
    width: 50%;
    padding: 0 var(--spacing-lg);
    text-align: right;
    font-weight: 600;
    color: var(--primary);
}

.roadmap-item:nth-child(odd) .roadmap-date {
    text-align: left;
}

.roadmap-content {
    width: 50%;
    padding: var(--spacing-md);
    background-color: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.roadmap-content h3 {
    margin-bottom: var(--spacing-sm);
}

.roadmap-content ul {
    margin-bottom: 0;
}

/* CTA Section */
.cta {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
}

.cta .section-title, .cta .section-subtitle {
    color: var(--white);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.cta-buttons .btn {
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.cta-buttons .btn-primary {
    background-color: var(--white);
    color: var(--primary);
}

.cta-buttons .btn-primary:hover {
    background-color: var(--light-gray);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.cta-buttons .btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.cta-buttons .btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.cta-buttons .btn-tertiary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-buttons .btn-tertiary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-about {
    padding-right: var(--spacing-lg);
}

.footer-logo {
    height: 50px;
    margin-bottom: var(--spacing-md);
}

.footer-description {
    color: var(--medium-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    max-width: 400px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.footer-links-group {
    display: flex;
    flex-direction: column;
}

.footer-title {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-link {
    margin-bottom: var(--spacing-xs);
}

.footer-link a {
    color: var(--medium-gray);
    transition: color var(--transition-fast);
    text-decoration: none;
}

.footer-link a:hover {
    color: var(--white);
}

.contact-title {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: var(--medium-gray);
}

/* Hero Button Animations */
.hero-btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.hero-btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.hero-btn-primary:hover::before {
    left: 100%;
}

.hero-btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.hero-btn-secondary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.hero-btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    background-color: rgba(255, 255, 255, 0.2);
}

/* Scroll Indicator Animation */
.scroll-indicator {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.roadmap-item:nth-child(even) .roadmap-content {
    margin-left: 10px;
}

.roadmap-item:nth-child(odd) .roadmap-content {
    margin-right: 10px;
}

/* Products Page Filter Buttons */
.filter-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-button {
    padding: 10px 20px;
    background-color: var(--white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
    color: var(--dark-gray);
}

.filter-button:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.filter-button.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* Products Page Card Standardization */
.products-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

.product-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-image {
    height: 180px;
}

.product-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-title {
    min-height: 40px;
}

.product-description {
    min-height: 60px;
}

.product-features {
    flex-grow: 1;
}

.product-status {
    margin-top: auto;
}

/* Products Page Spacing Adjustments */
.products-grid {
    margin-bottom: var(--spacing-xl);
}

.product-details {
    margin-top: var(--spacing-xl);
}

.hero-subtitle {
    color: rgb(235, 231, 13);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-align: left;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    text-align: center;
    animation: bounce 2s infinite;
    z-index: 3;
}

.scroll-indicator span {
    display: block;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
}

.scroll-indicator i {
    font-size: 1.2rem;
}

.footer-contact {
    margin-top: var(--spacing-lg);
}

.contact-address {
    color: var(--medium-gray);
    line-height: 1.6;
    margin: 0;
}

/* 响应式布局样式 */
@media screen and (max-width: 1200px) {
    .container {
        max-width: 960px;
        padding: 0 var(--spacing-md);
    }

    .hero-content {
        max-width: 500px;
    }

    .hero-visual-element {
        width: 400px;
        height: 400px;
    }
}

@media screen and (max-width: 992px) {
    .container {
        max-width: 720px;
    }

    /* 导航栏响应式设计 */
    .navbar-container {
        height: 60px;
    }

    .navbar-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 280px;
        height: calc(100vh - 60px);
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        transition: left 0.3s ease;
        box-shadow: var(--shadow-md);
        overflow-y: auto;
    }

    .navbar-menu.active {
        left: 0;
    }

    .navbar-item {
        margin: var(--spacing-xs) 0;
        width: 100%;
    }

    .navbar-link {
        padding: var(--spacing-sm);
        width: 100%;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .navbar-dropdown {
        position: static;
        width: 100%;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0;
        margin-top: var(--spacing-xs);
        display: none;
        background-color: var(--light-gray);
        border-radius: var(--radius-sm);
    }

    .navbar-item.active .navbar-dropdown {
        display: block;
    }

    .mobile-menu-toggle {
        display: block;
        width: 30px;
        height: 30px;
        position: relative;
        cursor: pointer;
    }

    .mobile-menu-toggle span {
        display: block;
        width: 100%;
        height: 2px;
        background-color: var(--dark-gray);
        position: absolute;
        left: 0;
        transition: all 0.3s ease;
    }

    .mobile-menu-toggle span:nth-child(1) {
        top: 5px;
    }

    .mobile-menu-toggle span:nth-child(2) {
        top: 14px;
    }

    .mobile-menu-toggle span:nth-child(3) {
        top: 23px;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg);
        top: 14px;
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg);
        top: 14px;
    }

    /* 其他响应式调整 */
    .business-lines-container {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

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

    .footer-container {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

@media screen and (max-width: 768px) {
    .container {
        max-width: 540px;
    }

    .hero {
        padding: 100px 0 var(--spacing-xl);
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero-subtitle {
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .business-lines-container {
        grid-template-columns: 1fr;
    }

    .compliance-container {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-about {
        padding-right: 0;
    }

    .footer-description {
        margin: 0 auto var(--spacing-md);
    }

    .social-links {
        justify-content: center;
    }

    .footer-links-group {
        align-items: center;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .navbar-link,
    .dropdown-item,
    .btn,
    .filter-button {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .navbar-dropdown {
        padding: var(--spacing-xs);
    }

    .social-link {
        width: 44px;
        height: 44px;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --white: #1a1a1a;
        --light-gray: #2d2d2d;
        --medium-gray: #666666;
        --dark-gray: #e0e0e0;
        --black: #ffffff;
    }

    .navbar {
        background-color: rgba(26, 26, 26, 0.95);
    }

    .navbar-menu {
        background-color: var(--white);
    }

    .navbar-link,
    .dropdown-item {
        color: var(--dark-gray);
    }

    .mobile-menu-toggle span {
        background-color: var(--dark-gray);
    }
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    z-index: 1000;
    transition: width 0.1s ease;
}

/* 导航栏过渡效果 */
.navbar {
    transition: all 0.3s ease;
}

/* 语言切换器样式 */
.language-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-md);
}

.language-option {
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-weight: 500;
    color: var(--medium-gray);
}

.language-option:hover {
    color: var(--primary);
    background-color: var(--light-gray);
}

.language-option.active {
    color: var(--primary);
    background-color: var(--light-gray);
}

/* 移动端菜单动画 */
.navbar-menu {
    transition: left 0.3s ease;
}

.navbar-menu.active {
    left: 0;
}

/* 触摸滑动提示 */
.swipe-hint {
    position: fixed;
    bottom: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.swipe-hint.visible {
    opacity: 1;
}

/* 暗色模式适配 */
@media (prefers-color-scheme: dark) {
    .scroll-progress {
        background: linear-gradient(to right, var(--primary-light), var(--primary));
    }

    .language-option {
        color: var(--medium-gray);
    }

    .language-option:hover,
    .language-option.active {
        color: var(--primary-light);
        background-color: rgba(255, 255, 255, 0.1);
    }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    .navbar,
    .navbar-menu,
    .scroll-progress,
    .language-option {
        transition: none;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .scroll-progress {
        height: 4px;
        background: var(--primary);
    }

    .language-option {
        border: 1px solid var(--medium-gray);
    }

    .language-option.active {
        border-color: var(--primary);
    }
}