/* 欲望之尾游戏官网样式 - 像素风格日式RPG主题 */

:root {
    --primary-color: #6b46c1;
    --secondary-color: #9333ea;
    --accent-color: #c084fc;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-light: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --pixel-border: 2px solid;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
}

.logo-img {
    width: 48px;
    height: 48px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.logo-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-link:hover {
    opacity: 0.8;
    background: rgba(255, 255, 255, 0.1);
}

.btn-download {
    background: white;
    color: var(--primary-color);
    border-radius: 6px;
    font-weight: 600;
}

.btn-download:hover {
    background: var(--bg-light);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s;
}

/* 移动端导航菜单 */
@media (max-width: 768px) {
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        box-shadow: var(--shadow-lg);
    }

    .nav.active {
        max-height: 500px;
    }

    .nav-list {
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
    }

    .nav-link {
        display: block;
        padding: 1rem 2rem;
        width: 100%;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-link:last-child {
        border-bottom: none;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, white 100%);
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-light);
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: white;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

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

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-description {
    color: var(--text-light);
    line-height: 1.7;
}

/* Gallery Section */
.gallery {
    padding: 5rem 0;
    background: var(--bg-light);
}

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

.gallery-item {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

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

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

/* Guide Section */
.guide {
    padding: 5rem 0;
    background: white;
}

.guide-content {
    max-width: 900px;
    margin: 0 auto;
}

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

.guide-section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--accent-color);
}

.guide-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.guide-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.guide-item-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.guide-item-text {
    color: var(--text-light);
    line-height: 1.7;
}

/* Updates Section */
.updates {
    padding: 5rem 0;
    background: var(--bg-light);
}

.updates-list {
    max-width: 800px;
    margin: 0 auto;
}

.update-item {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.update-version {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

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

.update-content li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Download Section */
.download {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

.download .section-title {
    color: white;
}

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

.download-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.download-description {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.download-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.download .btn-primary {
    background: white;
    color: var(--primary-color);
    margin-top: 1.5rem;
}

.download .btn-primary:hover {
    background: var(--bg-light);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

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

.footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-info {
    list-style: none;
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

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

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

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-stats {
        justify-content: space-around;
    }

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

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

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

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

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 2rem 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }

    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

/* SEO优化 - 图片懒加载和性能优化 */
img {
    max-width: 100%;
    height: auto;
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .btn,
    .mobile-menu-toggle {
        display: none;
    }
}