/* 刀剑江湖路 - 水墨风格样式表 */

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



/* Breadcrumb Navigation */
.breadcrumb {
    background: rgba(52, 73, 94, 0.1);
    padding: 1rem 0;
    border-bottom: 1px solid #34495e;
}

.breadcrumb-list {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 0.5rem;
}

.breadcrumb-list li {
    color: #ecf0f1;
}

.breadcrumb-list li:not(:last-child)::after {
    content: "›";
    margin-left: 0.5rem;
    color: #bdc3c7;
}

.breadcrumb-list a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-list a:hover {
    color: #2980b9;
}

.breadcrumb-list .current {
    color: #FFFFFF;
    font-weight: 600;
}

/* Table of Contents */
.table-of-contents {
    background: #34495e;
    padding: 3rem 0;
}

.table-of-contents h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #FFFFFF;
}

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

.toc-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem;
    background: #2c3e50;
    border-radius: 10px;
    text-decoration: none;
    color: #FFFFFF;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.toc-item:hover {
    background: #1a252f;
    border-left-color: #3498db;
    transform: translateY(-2px);
}

.toc-icon {
    font-size: 1.5rem;
}

.toc-text {
    font-weight: 600;
}

/* Social Share */
.social-share {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.share-text {
    color: #ecf0f1;
    font-weight: 500;
    margin-right: 0.5rem;
}

.share-btn {
    background: rgba(52, 152, 219, 0.2);
    border: 2px solid #3498db;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #FFFFFF;
}

.share-btn:hover {
    background: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.share-icon {
    font-size: 1.2rem;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'WenQuanYi Micro Hei', sans-serif;
    line-height: 1.6;
    color: #FFFFFF;
    background: #1a1a1a;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: 1rem;
    color: #FFFFFF;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.8);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
    position: relative;
    padding: 15px 20px;
    margin-bottom: 30px;
    background: #2c3e50;
    color: #FFFFFF;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
    border-left: 5px solid #3498db;
}



h3 {
    font-size: 1.5rem;
    color: #FFFFFF;
    background: #34495e;
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 15px;
    border-left: 3px solid #e74c3c;
}

p {
    margin-bottom: 1rem;
    color: #FFFFFF;
    line-height: 1.8;
    font-weight: 500;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

/* Header Styles */
.header {
    background: rgba(44, 62, 80, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-image {
    height: 40px;
    width: auto;
    transition: transform 0.3s ease;
}

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

.logo-text h1 {
    font-size: 1.6rem;
    color: #FFFFFF;
    margin: 0;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    line-height: 1.2;
}

.logo-text .subtitle {
    font-size: 0.8rem;
    color: #ecf0f1;
    font-weight: 400;
    display: block;
    margin-top: -2px;
}

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

.nav-menu li a {
    text-decoration: none;
    color: #FFFFFF;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
    position: relative;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

.nav-menu li a:hover {
    color: #fff;
    background: linear-gradient(135deg, #2c3e50, #34495e);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(44, 62, 80, 0.3);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #2c3e50;
    cursor: pointer;
    padding: 0.5rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: #2c3e50;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    border-bottom: 1px solid #34495e;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="%23000" opacity="0.02"/><circle cx="80" cy="80" r="1" fill="%23000" opacity="0.02"/><circle cx="40" cy="60" r="1" fill="%23000" opacity="0.02"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-text {
    padding: 2rem 0;
    text-align: left;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 6px rgba(0, 0, 0, 0.8);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: #ecf0f1;
    margin-bottom: 1.5rem;
    font-weight: 600;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.8);
}

.hero-description {
    font-size: 1.1rem;
    color: #FFFFFF;
    margin-bottom: 2rem;
    line-height: 1.8;
    font-weight: 600;
    background: rgba(52, 73, 94, 0.8);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

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

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

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

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

/* Button Styles */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.btn-primary {
    background: #FFFFFF;
    color: #2c3e50;
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
    border: 2px solid #2c3e50;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.5);
    background: #f8f9fa;
}

.btn-secondary {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    color: #FFFFFF;
    border: 2px solid transparent;
    box-shadow: 0 5px 15px rgba(116, 185, 255, 0.3);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #81ecec, #00cec9);
    color: #FFFFFF;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(129, 236, 236, 0.4);
}

.btn-download {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(39, 174, 96, 0.4);
}

.btn-mirror {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

.btn-mirror:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(243, 156, 18, 0.4);
}

/* Main Content */
.main-content {
    padding-top: 2rem;
}

.content-section {
    padding: 4rem 0;
    position: relative;
}

.content-section:nth-child(even) {
    background: #34495e;
}

/* Introduction Section */
.intro-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: center;
}

.intro-text {
    font-size: 1.1rem;
    color: #FFFFFF;
    font-weight: 600;
    background: rgba(44, 62, 80, 0.9);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.intro-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Features Section */
.features-section {
    background: #2c3e50;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature-card {
    background: #34495e;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::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;
}

.feature-card:hover::before {
    left: 100%;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.feature-card p {
    margin-bottom: 1.5rem;
    color: #ecf0f1;
    font-weight: 600;
}

.feature-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-top: 1rem;
}

/* Advantages Section */
.advantages-grid {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 2rem;
}

.advantage-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 2rem;
    background: #34495e;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.advantage-item.reverse {
    direction: rtl;
}

.advantage-item.reverse > * {
    direction: ltr;
}

.advantage-content h3 {
    margin-bottom: 1rem;
    color: #FFFFFF;
}

.advantage-content p {
    color: #ecf0f1;
    line-height: 1.8;
    font-weight: 600;
}

.advantage-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Download Section */
.download-section {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    color: white;
}

.download-section h2 {
    color: white;
}

.download-section h2::after {
    background: linear-gradient(90deg, #3498db, #2980b9);
}

.download-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.download-info h3 {
    color: white;
    margin-bottom: 1.5rem;
}

.download-features {
    list-style: none;
    margin-bottom: 2rem;
}

.download-features li {
    padding: 0.5rem 0;
    color: #ecf0f1;
    font-size: 1.1rem;
}

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

.system-requirements {
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.system-requirements h4 {
    color: white;
    margin-bottom: 1rem;
}

.system-requirements ul {
    list-style: none;
}

.system-requirements li {
    padding: 0.3rem 0;
    color: #ecf0f1;
}

/* Compatibility Checker */
.compatibility-checker {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #34495e;
}

.compatibility-checker h4 {
    color: #FFFFFF;
    margin-bottom: 1rem;
}

.compatibility-result {
    margin-top: 1rem;
}

.compatibility-results {
    background: rgba(52, 73, 94, 0.3);
    padding: 1.5rem;
    border-radius: 10px;
    margin-top: 1rem;
}

.result-item {
    display: flex;
    align-items: center;
    margin-bottom: 0.8rem;
    padding: 0.5rem;
    border-radius: 5px;
}

.result-item.compatible {
    background: rgba(46, 204, 113, 0.2);
    border-left: 3px solid #2ecc71;
}

.result-item.incompatible {
    background: rgba(231, 76, 60, 0.2);
    border-left: 3px solid #e74c3c;
}

.result-icon {
    margin-right: 0.8rem;
    font-size: 1.2rem;
}

.result-text {
    color: #ecf0f1;
    font-weight: 500;
}

.overall-result {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

.overall-result.excellent {
    background: rgba(46, 204, 113, 0.2);
    border: 2px solid #2ecc71;
}

.overall-result.good {
    background: rgba(52, 152, 219, 0.2);
    border: 2px solid #3498db;
}

.overall-result.fair {
    background: rgba(243, 156, 18, 0.2);
    border: 2px solid #f39c12;
}

.overall-result.poor {
    background: rgba(231, 76, 60, 0.2);
    border: 2px solid #e74c3c;
}

.overall-result h5 {
    color: #FFFFFF;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.overall-result p {
    color: #ecf0f1;
    margin: 0;
    font-weight: 500;
}

/* Guide Section */
.guide-section {
    background: #34495e;
}

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.guide-card {
    background: #2c3e50;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

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

.guide-card h3 {
    color: #3498db;
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
}

.guide-content h4 {
    color: #e74c3c;
    margin: 1.5rem 0 1rem 0;
    font-size: 1.1rem;
}

.guide-content ul {
    list-style: none;
    padding-left: 0;
}

.guide-content li {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    color: #ecf0f1;
    line-height: 1.6;
}

.guide-content li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #3498db;
    font-size: 0.8rem;
}

.guide-content strong {
    color: #f39c12;
}

/* Characters Section */
.characters-section {
    background: #1a1a1a;
}

.characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.character-card {
    background: #2c3e50;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.character-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.character-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.character-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.character-card:hover .character-image img {
    transform: scale(1.1);
}

.character-info {
    padding: 2rem;
}

.character-info h3 {
    color: #FFFFFF;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    text-align: center;
}

.character-stats {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.stat-tag {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: #FFFFFF;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.character-info p {
    margin-bottom: 1.5rem;
    color: #ecf0f1;
    line-height: 1.7;
}

.character-skills h4,
.character-tips h4 {
    color: #e74c3c;
    margin: 1.5rem 0 1rem 0;
    font-size: 1.1rem;
}

.character-skills ul {
    list-style: none;
    padding-left: 0;
}

.character-skills li {
    margin-bottom: 0.8rem;
    padding: 0.5rem;
    background: rgba(52, 73, 94, 0.5);
    border-radius: 8px;
    border-left: 3px solid #f39c12;
    color: #ecf0f1;
}

.character-skills strong {
    color: #f39c12;
}

.character-tips p {
    background: rgba(46, 204, 113, 0.1);
    padding: 1rem;
    border-radius: 8px;
    border-left: 3px solid #2ecc71;
    margin: 0;
}

/* FAQ Section */
.faq-section {
    background: #2c3e50;
}

.faq-list {
    margin-top: 2rem;
}

.faq-item {
    background: #34495e;
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item h3 {
    padding: 1.5rem 2rem;
    margin: 0;
    background: #34495e;
    color: #FFFFFF;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    font-weight: 700;
}

.faq-item h3:hover {
    background: #3498db;
    color: #FFFFFF;
}

.faq-item h3::after {
    content: '+';
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    transition: transform 0.3s ease;
    color: #FFFFFF;
    font-weight: bold;
}

.faq-item.active h3::after {
    transform: translateY(-50%) rotate(45deg);
}

.faq-item p {
    padding: 0 2rem 1.5rem;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    color: #FFFFFF;
    font-weight: 500;
    background: #34495e;
}

.faq-item.active p {
    max-height: 200px;
    padding: 1.5rem 2rem;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: #FFFFFF;
    padding: 3rem 0 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #34495e;
}

.footer-logo-image {
    height: 50px;
    width: auto;
}

.footer-logo-text h4 {
    color: #FFFFFF;
    margin: 0 0 0.5rem 0;
    font-size: 1.4rem;
}

.footer-logo-text p {
    color: #bdc3c7;
    margin: 0;
    font-size: 0.9rem;
    font-style: italic;
}

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

.footer-section h4 {
    color: #FFFFFF;
    margin-bottom: 1rem;
    font-weight: 700;
}

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

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

.footer-section ul li a {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.footer-section ul li a:hover {
    color: #3498db;
}

/* 友情链接特殊样式 */
.footer-section:last-of-type ul li a {
    position: relative;
    padding: 2px 8px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.footer-section:last-of-type ul li a:hover {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
    transform: translateX(5px);
}

.footer-section:last-of-type ul li a::before {
    content: "🔗";
    margin-right: 5px;
    font-size: 12px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #ecf0f1;
    font-weight: 500;
}

.footer-bottom a {
    color: #3498db;
    text-decoration: none;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

/* Large Screen Optimization */
@media (min-width: 1600px) {
    .container {
        max-width: 1600px;
        padding: 0 60px;
    }
    
    .hero-content {
        max-width: 1600px;
        gap: 6rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .nav-container {
        max-width: 1600px;
        padding: 1rem 3rem;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .menu-toggle {
        display: block;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

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

    .intro-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .advantage-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .advantage-item.reverse {
        direction: ltr;
    }

    .download-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

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

    .container {
        padding: 0 15px;
    }

    .nav-container {
        padding: 1rem 15px;
    }
    
    .logo-text h1 {
        font-size: 1.3rem;
    }
    
    .logo-text .subtitle {
        font-size: 0.7rem;
    }
    
    .logo-image {
        height: 35px;
    }
    
    .footer-logo {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .footer-logo-image {
        height: 40px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .faq-item h3 {
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
    }

    .faq-item p {
        padding: 0 1.5rem 1rem;
    }

    .faq-item.active p {
        padding: 1rem 1.5rem;
    }
}

/* Performance Optimizations */
img {
    max-width: 100%;
    height: auto;
}

.lazy {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy.loaded {
    opacity: 1;
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .hero {
        background: #ffffff;
    }
    
    .feature-card {
        border: 2px solid #000000;
    }
}

/* Print styles */
@media print {
    .header,
    .back-to-top,
    .download-buttons {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero {
        background: white;
    }
}