/* VR女友 - 日式少女风格样式 */
:root {
    --primary-pink: #ff69b4;
    --light-pink: #ffb6c1;
    --soft-pink: #ffc0cb;
    --pale-pink: #ffe4e1;
    --white: #ffffff;
    --cream: #fef7f0;
    --text-dark: #333333;
    --text-light: #666666;
    --shadow: rgba(255, 105, 180, 0.2);
    --gradient-bg: linear-gradient(135deg, #ffeef8 0%, #f8e8ff 100%);
    --card-shadow: 0 8px 32px rgba(255, 105, 180, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', '微软雅黑', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1rem; }

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo img {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

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

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

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary-pink);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-pink);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 182, 193, 0.3) 0%, transparent 70%);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    background: linear-gradient(45deg, var(--primary-pink), var(--light-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-pink);
    margin-bottom: 1rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

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

.btn-primary, .btn-secondary {
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-pink), var(--light-pink));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 105, 180, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 105, 180, 0.6);
}

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

.btn-secondary:hover {
    background: var(--primary-pink);
    color: var(--white);
    transform: translateY(-2px);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.hero-image:hover img {
    transform: scale(1.02);
}

/* Sections */
.section {
    padding: 80px 0;
}

.bg-gradient {
    background: var(--gradient-bg);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(45deg, var(--primary-pink), var(--light-pink));
    border-radius: 2px;
}

/* Game Introduction */
.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.intro-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.intro-image:hover img {
    transform: scale(1.02);
}

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

.feature-card {
    background: var(--white);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(255, 105, 180, 0.25);
}

.feature-image {
    margin-bottom: 1.5rem;
    border-radius: 15px;
    overflow: hidden;
}

.feature-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

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

.feature-title {
    color: var(--primary-pink);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* Technical Advantages */
.advantages-grid {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.advantage-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

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

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

.advantage-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.advantage-image:hover img {
    transform: scale(1.02);
}

.advantage-title {
    color: var(--primary-pink);
    margin-bottom: 1.5rem;
}

.advantage-list {
    list-style: none;
}

.advantage-list li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
    color: var(--text-light);
}

.advantage-list li::before {
    content: '💖';
    position: absolute;
    left: 0;
    top: 0.5rem;
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(255, 105, 180, 0.3);
}

.gallery-item img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 1rem;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    color: var(--primary-pink);
    position: relative;
    margin: 0;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    transition: var(--transition);
}

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

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: var(--text-light);
    line-height: 1.6;
}

.faq-item.active .faq-answer {
    padding-bottom: 1.5rem;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--primary-pink) 0%, var(--light-pink) 100%);
    color: var(--white);
    padding: 3rem 0 1rem;
}

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

.footer-title {
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-description, .footer-contact {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0.5rem;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.8);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .intro-grid, .advantage-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    /* New content mobile styles */
    .guide-content {
        grid-template-columns: 1fr;
    }
    
    .scene-interactions {
        grid-template-columns: 1fr;
    }
    
    .advanced-tips {
        grid-template-columns: 1fr;
    }
    
    .character-main {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .personality-traits {
        grid-template-columns: 1fr;
    }
    
    .outfit-system {
        grid-template-columns: 1fr;
    }
    
    .interaction-responses {
        grid-template-columns: 1fr;
    }
    
    .device-list {
        grid-template-columns: 1fr;
    }
    
    .config-requirements {
        grid-template-columns: 1fr;
    }
    
    .optimization-tips {
        grid-template-columns: 1fr;
    }
    
    .comparison-table {
        font-size: 0.9rem;
    }
    
    .compare-table th,
    .compare-table td {
        padding: 0.5rem;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .feature-card, .faq-item {
        margin: 0 10px;
    }
}

/* Loading and Performance Optimizations */
.lazy {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy.loaded {
    opacity: 1;
}

/* Preload animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Critical CSS for above-the-fold content */
.hero, .header {
    contain: layout style paint;
}

/* Optimize font loading */
@font-face {
    font-family: 'Segoe UI';
    font-display: swap;
}

/* Reduce layout shifts */
img {
    height: auto;
    max-width: 100%;
}

/* VR Gameplay Guide Styles */
.gameplay-guide {
    max-width: 1000px;
    margin: 0 auto;
}

.guide-section {
    margin-bottom: 3rem;
}

.guide-title {
    color: var(--primary-pink);
    text-align: center;
    margin-bottom: 2rem;
}

.guide-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.guide-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.guide-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(255, 105, 180, 0.2);
}

.guide-item h4 {
    color: var(--primary-pink);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.scene-interactions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.scene-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

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

.scene-card h4 {
    color: var(--primary-pink);
    margin-bottom: 1rem;
}

.scene-card ul {
    list-style: none;
    padding: 0;
}

.scene-card li {
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.2rem;
    color: var(--text-light);
}

.scene-card li::before {
    content: '💖';
    position: absolute;
    left: 0;
    top: 0.3rem;
    font-size: 0.8rem;
}

.advanced-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tip-item {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.tip-item:hover {
    transform: translateY(-5px);
}

.tip-item h4 {
    color: var(--primary-pink);
    margin-bottom: 0.5rem;
}

/* Character Profile Styles */
.character-profile {
    max-width: 1000px;
    margin: 0 auto;
}

.character-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    align-items: center;
}

.character-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
}

.character-name {
    font-size: 2rem;
    color: var(--primary-pink);
    margin-bottom: 1.5rem;
}

.character-name-jp {
    font-size: 1.2rem;
    color: var(--text-light);
    font-weight: normal;
}

.character-stats {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    margin-bottom: 1.5rem;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--pale-pink);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    font-weight: 600;
    color: var(--text-dark);
}

.stat-value {
    color: var(--primary-pink);
    font-weight: 500;
}

.character-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
}

.character-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.detail-section {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
}

.detail-section h4 {
    color: var(--primary-pink);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.personality-traits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.trait-item {
    padding: 1rem;
    background: var(--pale-pink);
    border-radius: 10px;
}

.trait-item h5 {
    color: var(--primary-pink);
    margin-bottom: 0.5rem;
}

.outfit-system {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.outfit-category h5 {
    color: var(--primary-pink);
    margin-bottom: 0.8rem;
}

.outfit-category ul {
    list-style: none;
    padding: 0;
}

.outfit-category li {
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.2rem;
    color: var(--text-light);
}

.outfit-category li::before {
    content: '👗';
    position: absolute;
    left: 0;
    top: 0.3rem;
    font-size: 0.8rem;
}

.interaction-responses {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.response-type {
    padding: 1rem;
    background: var(--pale-pink);
    border-radius: 10px;
}

.response-type h5 {
    color: var(--primary-pink);
    margin-bottom: 0.5rem;
}

/* System Requirements Styles */
.requirements-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.req-category {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--card-shadow);
}

.req-title {
    color: var(--primary-pink);
    margin-bottom: 1.5rem;
    text-align: center;
}

.device-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.device-item {
    background: var(--pale-pink);
    padding: 1.5rem;
    border-radius: 15px;
}

.device-item h4 {
    color: var(--primary-pink);
    margin-bottom: 1rem;
}

.device-item ul {
    list-style: none;
    padding: 0;
}

.device-item li {
    padding: 0.3rem 0;
    color: var(--text-light);
}

.config-requirements {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.config-level {
    background: var(--pale-pink);
    padding: 1.5rem;
    border-radius: 15px;
}

.config-level h4 {
    color: var(--primary-pink);
    margin-bottom: 1rem;
}

.config-level ul {
    list-style: none;
    padding: 0;
}

.config-level li {
    padding: 0.3rem 0;
    color: var(--text-light);
}

.optimization-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tip-group {
    background: var(--pale-pink);
    padding: 1.5rem;
    border-radius: 15px;
}

.tip-group h4 {
    color: var(--primary-pink);
    margin-bottom: 1rem;
}

.tip-group ul {
    list-style: none;
    padding: 0;
}

.tip-group li {
    padding: 0.3rem 0;
    position: relative;
    padding-left: 1.2rem;
    color: var(--text-light);
}

.tip-group li::before {
    content: '✨';
    position: absolute;
    left: 0;
    top: 0.3rem;
    font-size: 0.8rem;
}

/* Comparison Table Styles */
.comparison-section {
    max-width: 1200px;
    margin: 0 auto;
}

.comparison-intro {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.1rem;
    color: var(--text-light);
}

.comparison-table {
    margin-bottom: 3rem;
    overflow-x: auto;
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.compare-table th,
.compare-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--pale-pink);
}

.compare-table th {
    background: var(--primary-pink);
    color: var(--white);
    font-weight: 600;
}

.compare-table th.highlight {
    background: linear-gradient(45deg, var(--primary-pink), var(--light-pink));
}

.compare-table td.highlight {
    background: var(--pale-pink);
    font-weight: 600;
    color: var(--primary-pink);
}

.compare-table tr:hover {
    background: var(--cream);
}

.comparison-highlights h3 {
    color: var(--primary-pink);
    text-align: center;
    margin-bottom: 2rem;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.advantage-point {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.advantage-point:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(255, 105, 180, 0.2);
}

.advantage-point h4 {
    color: var(--primary-pink);
    margin-bottom: 0.8rem;
}

.advantage-point p {
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* Focus styles for accessibility */
button:focus, a:focus {
    outline: 2px solid var(--primary-pink);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header, .footer, .hero-buttons {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .section {
        page-break-inside: avoid;
    }
}