/* 
* Sheep 3D - Main Style Sheet
* Based on Sprunki.com design style
* Features: Vibrant colors, bold lines, simplified forms, geometric elements
*/

/* ===== Base Styles ===== */
:root {
    /* Primary Colors - Vibrant and energetic */
    --primary-color: #FF3E7F;       /* Bright pink - main brand color */
    --primary-dark: #E31B6D;        /* Darker pink */
    --primary-light: #FF71A3;       /* Lighter pink */
    
    /* Secondary Colors - Bold and playful */
    --secondary-color: #00E6CC;     /* Bright turquoise */
    --secondary-dark: #00C4AD;      /* Darker turquoise */
    --secondary-light: #4DFFE6;     /* Lighter turquoise */
    
    /* Accent Colors - Unexpected combinations */
    --accent-1: #FFCC00;            /* Bright yellow */
    --accent-2: #4D4DFF;            /* Electric blue */
    --accent-3: #B3FF00;            /* Lime green */
    
    /* Neutral Colors */
    --background: #1A1A2E;          /* Dark blue background */
    --background-alt: #232352;      /* Slightly lighter blue */
    --text-primary: #FFFFFF;        /* White text */
    --text-secondary: #CCCCFF;      /* Light purple text */
    --text-light: #9999CC;          /* Lavender text */
    
    /* Functional Colors */
    --success: #00E676;             /* Bright green */
    --warning: #FFCC00;             /* Bright yellow */
    --error: #FF3D71;               /* Bright red */
    
    /* Dimensions */
    --container-width: 1200px;      /* Container max width */
    --border-radius: 20px;          /* Rounded corners - more pronounced */
    --spacing-xs: 0.5rem;           /* Extra small spacing */
    --spacing-sm: 1rem;             /* Small spacing */
    --spacing-md: 2rem;             /* Medium spacing */
    --spacing-lg: 3rem;             /* Large spacing */
    --spacing-xl: 5rem;             /* Extra large spacing */
    
    /* Shadows - more dramatic */
    --shadow-sm: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.4);
    --shadow-neon: 0 0 15px rgba(255, 62, 127, 0.7); /* Neon glow effect */
    
    /* Animations */
    --transition-fast: 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --transition-normal: 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --transition-slow: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

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

body {
    font-family: 'Montserrat', 'Poppins', sans-serif;
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: linear-gradient(45deg, var(--background) 0%, var(--background-alt) 100%);
    background-attachment: fixed;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 800; /* Extra bold for Sprunki style */
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

p {
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: 600;
    position: relative;
}

a:hover {
    color: var(--accent-1);
    text-shadow: 0 0 8px rgba(255, 204, 0, 0.5);
}

a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-1);
    transition: width var(--transition-normal);
}

a:hover::after {
    width: 100%;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

ul {
    list-style: none;
}

section {
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.highlight {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(255, 62, 127, 0.5);
    font-style: italic;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.section-header::after {
    content: '';
    display: block;
    width: 100px;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-1));
    margin: var(--spacing-md) auto;
    border-radius: 5px;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(to right, var(--primary-color), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* ===== Button Styles ===== */
.btn {
    display: inline-block;
    padding: 0.9rem 2rem;
    border-radius: 30px;
    font-weight: 700;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: var(--shadow-md);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-1));
    z-index: -1;
    transition: opacity var(--transition-normal);
}

.btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--accent-2), var(--secondary-color));
    z-index: -2;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn:hover::before {
    opacity: 0;
}

.btn:hover::after {
    opacity: 1;
}

.btn-primary {
    color: white;
    border: 3px solid var(--primary-light);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 10px 20px rgba(255, 62, 127, 0.4), 0 0 15px rgba(255, 62, 127, 0.4);
    border-color: var(--accent-1);
}

.btn-secondary {
    color: white;
    border: 3px solid var(--secondary-light);
}

.btn-secondary:hover {
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 10px 20px rgba(0, 230, 204, 0.4), 0 0 15px rgba(0, 230, 204, 0.4);
    border-color: var(--accent-2);
}

.btn-outline {
    background: transparent;
    border: 3px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline::before,
.btn-outline::after {
    opacity: 0;
}

.btn-outline:hover {
    color: white;
    border-color: var(--accent-1);
    background: linear-gradient(45deg, var(--primary-color), var(--accent-1));
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 10px 20px rgba(255, 62, 127, 0.4), 0 0 15px rgba(255, 62, 127, 0.4);
}

/* ===== 加载动画 ===== */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--background);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-icon {
    width: 60px;
    height: 60px;
    border: 5px solid var(--background-alt);
    border-radius: 50%;
    border-top: 5px solid var(--primary-color);
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

/* ===== Navigation Bar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(26, 26, 46, 0.9); /* Semi-transparent background */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border-bottom: 3px solid var(--primary-color);
}

.navbar.scrolled {
    background-color: rgba(26, 26, 46, 0.95);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(255, 62, 127, 0.3);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.navbar-logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--primary-color), var(--accent-1));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding: 5px 0;
}

.navbar-logo::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-1));
    border-radius: 3px;
}

.navbar-links {
    display: flex;
    gap: var(--spacing-lg);
}

.navbar-links a {
    color: var(--text-primary);
    font-weight: 700;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 5px 0;
    font-size: 1rem;
}

.navbar-links a:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(255, 62, 127, 0.5);
}

.navbar-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-1));
    transition: width var(--transition-normal);
    border-radius: 3px;
}

.navbar-links a:hover::after {
    width: 100%;
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .navbar-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: linear-gradient(135deg, var(--background) 0%, var(--background-alt) 100%);
        flex-direction: column;
        padding: var(--spacing-xl) var(--spacing-lg);
        transition: right var(--transition-normal);
        box-shadow: var(--shadow-lg), -5px 0 20px rgba(255, 62, 127, 0.3);
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
    }
    
    .navbar-links.active {
        right: 0;
    }
    
    .navbar-toggle {
        display: block;
        z-index: 1001;
    }
    
    .navbar-close {
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
        color: var(--primary-color);
        font-size: 2rem;
    }
    
    .navbar-links a {
        font-size: 1.2rem;
    }
}

/* ===== Hero Section ===== */
.hero {
    padding: 180px 0 120px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-2) 100%);
    color: white;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background-color: var(--accent-1);
    border-radius: 50%;
    opacity: 0.2;
    filter: blur(80px);
    z-index: 0;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    opacity: 0.2;
    filter: blur(100px);
    z-index: 0;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-content h2 {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 1px;
    text-shadow: 0 0 20px rgba(255, 62, 127, 0.5);
    background: linear-gradient(to right, white, var(--accent-1));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    max-width: 90%;
}

.hero-image {
    flex: 1;
    max-width: 500px;
    animation: float 6s cubic-bezier(0.37, 0, 0.63, 1) infinite;
    filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.3));
    transform-origin: center center;
}

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

.shape-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.shape-divider svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

.shape-divider .shape-fill {
    fill: var(--background);
}

.shape-divider-bottom {
    transform: rotate(180deg);
    top: 0;
    bottom: auto;
}

/* ===== About Section ===== */
.about {
    background: linear-gradient(135deg, var(--background) 0%, var(--background-alt) 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 250px;
    height: 250px;
    background-color: var(--accent-2);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(60px);
    z-index: 0;
}

.about::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background-color: var(--primary-color);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(80px);
    z-index: 0;
}

.about-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.about-image {
    flex: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 62, 127, 0.3);
    transform: rotate(-3deg);
    transition: all var(--transition-normal);
    border: 4px solid var(--primary-color);
}

.about-image:hover {
    transform: rotate(0deg) scale(1.05);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(255, 62, 127, 0.5);
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.features-list {
    margin-top: var(--spacing-lg);
}

.features-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    background: rgba(26, 26, 46, 0.5);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow-md);
}

.features-list li:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(255, 62, 127, 0.3);
    border-left-color: var(--accent-1);
}

.features-list .icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-2));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: var(--spacing-md);
    flex-shrink: 0;
    box-shadow: 0 0 15px rgba(255, 62, 127, 0.5);
}

.features-list .icon img {
    width: 30px;
    height: 30px;
    filter: brightness(0) invert(1);
}

.feature-text h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--accent-1);
    font-size: 1.1rem;
    letter-spacing: 1px;
}

.feature-text p {
    color: var(--text-secondary);
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ===== Game Section ===== */
.game {
    background: linear-gradient(135deg, var(--background) 0%, var(--background-alt) 100%);
    position: relative;
    padding: var(--spacing-xl) 0 calc(var(--spacing-xl) + 80px);
    overflow: hidden;
}

.game-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.game-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.game-intro {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.game-intro::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -100px;
    width: 200px;
    height: 200px;
    background-color: var(--accent-1);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(50px);
    z-index: -1;
}

.game-intro::after {
    content: '';
    position: absolute;
    bottom: -30px;
    right: -100px;
    width: 150px;
    height: 150px;
    background-color: var(--primary-color);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(40px);
    z-index: -1;
}

.game-intro p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.warning-box {
    background: linear-gradient(135deg, rgba(255, 204, 0, 0.1) 0%, rgba(255, 62, 127, 0.1) 100%);
    border: 2px solid var(--accent-1);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 0 15px rgba(255, 204, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.warning-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent-1), var(--primary-color));
}

.warning-box p {
    font-size: 1rem;
    margin: 0;
    color: var(--text-primary);
    padding-left: var(--spacing-sm);
}

.warning-icon {
    font-weight: 800;
    margin-right: var(--spacing-sm);
    color: var(--accent-1);
    text-shadow: 0 0 5px rgba(255, 204, 0, 0.5);
}

.game-frame {
    width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background-color: var(--background);
    position: relative;
}

.game-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    min-height: 500px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 62, 127, 0.3);
    border: 4px solid var(--primary-color);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.game-wrapper:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(255, 62, 127, 0.5);
}

.game-iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    z-index: 1;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.fullscreen-button {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-2));
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.fullscreen-button:hover {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(255, 62, 127, 0.7);
}

.fullscreen-button svg {
    width: 20px;
    height: 20px;
}

.loading-indicator {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.9), rgba(35, 35, 82, 0.9));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 5;
    transition: opacity 0.5s ease;
    color: white;
}

.loading-indicator p {
    margin-top: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    background: linear-gradient(to right, var(--primary-color), var(--accent-1));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    border-left-color: var(--accent-1);
    border-right-color: var(--accent-2);
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

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

.game-tips-box {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.game-tips-box p {
    margin-bottom: var(--spacing-sm);
}

.game-controls {
    flex: 1;
    background: rgba(26, 26, 46, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md), 0 0 20px rgba(255, 62, 127, 0.2);
    border: 3px solid;
    border-image: linear-gradient(45deg, var(--primary-color), var(--accent-1)) 1;
    position: relative;
    overflow: hidden;
}

.game-controls h3 {
    margin-bottom: var(--spacing-md);
    font-size: 1.8rem;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    display: inline-block;
}

.game-controls h3::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-1));
    border-radius: 3px;
}

.game-controls ul {
    margin-bottom: var(--spacing-md);
}

.game-controls li {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    background: rgba(35, 35, 82, 0.5);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.game-controls li:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm), 0 0 10px rgba(255, 62, 127, 0.2);
}

.key {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-2));
    color: white;
    padding: 0.3rem 0.7rem;
    border-radius: 8px;
    font-weight: 700;
    margin-right: var(--spacing-md);
    min-width: 40px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), 0 0 10px rgba(255, 62, 127, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.game-tips {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.7), rgba(35, 35, 82, 0.7));
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--accent-1);
    box-shadow: var(--shadow-md), 0 0 15px rgba(255, 204, 0, 0.2);
}

.game-tips h4 {
    margin-bottom: var(--spacing-md);
    color: var(--accent-1);
    font-size: 1.3rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 0 5px rgba(255, 204, 0, 0.3);
}

.game-tips ul li {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    display: list-item;
    list-style-type: none;
    position: relative;
    padding-left: var(--spacing-md);
}

.game-tips ul li::before {
    content: '★';
    position: absolute;
    left: 0;
    color: var(--accent-1);
    font-size: 0.8rem;
}

.download-btn {
    width: 100%;
    text-align: center;
}

/* ===== Download Section ===== */
.download {
    background-color: var(--background);
    position: relative;
    padding: var(--spacing-xl) 0;
}

.download-options {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.download-card {
    flex: 1;
    background-color: var(--background-alt);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

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

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

.download-icon img {
    width: 40px;
    height: 40px;
}

.download-card h3 {
    margin-bottom: var(--spacing-sm);
}

.download-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.download-card .btn {
    width: 100%;
}

.version-info {
    background-color: var(--background-alt);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.version-info h3 {
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.version-details {
    display: flex;
    gap: var(--spacing-lg);
}

.version-item {
    flex: 1;
}

.version-item h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.version-item p {
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.version-item ul {
    list-style-type: disc;
    margin-left: var(--spacing-md);
}

.version-item ul li {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

/* ===== 联系部分 ===== */
.contact-content {
    display: flex;
    gap: var(--spacing-xl);
}

.contact-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    background-color: var(--background-alt);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.contact-item .icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-md);
}

.contact-item .icon img {
    width: 30px;
    height: 30px;
}

.contact-item h3 {
    margin-bottom: var(--spacing-sm);
}

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

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

.social-link:hover {
    background-color: var(--primary-color);
}

.social-link img {
    width: 20px;
    height: 20px;
}

.contact-form {
    flex: 1;
    background-color: var(--background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.contact-form h3 {
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid var(--background-alt);
    border-radius: var(--border-radius);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===== 页脚 ===== */
footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    height: 40px;
    margin-right: var(--spacing-sm);
}

.footer-logo h2 {
    font-size: 1.5rem;
    margin-bottom: 0;
    color: white;
}

.footer-links h3,
.footer-newsletter h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links ul li a {
    color: var(--text-light);
    transition: all var(--transition-fast);
}

.footer-links ul li a:hover {
    color: white;
    padding-left: 5px;
}

.footer-newsletter p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

.footer-newsletter form {
    display: flex;
}

.footer-newsletter input {
    flex: 1;
    padding: 0.8rem 1rem;
    border: none;
    border-radius: 50px 0 0 50px;
    font-family: 'Poppins', sans-serif;
    font-size: 0.9rem;
}

.footer-newsletter button {
    border-radius: 0 50px 50px 0;
    padding: 0 1.5rem;
}

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

.footer-bottom p {
    color: var(--text-light);
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .hero-content h2 {
        font-size: 3rem;
    }
    
    .game-container {
        flex-direction: column;
    }
    
    .game-frame {
        width: 100%;
    }
    
    .game-controls {
        width: 100%;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--background);
        padding: var(--spacing-md) 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav ul li {
        margin: var(--spacing-sm) 0;
    }
    
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-bottom: var(--spacing-xl);
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .about-image {
        margin-bottom: var(--spacing-lg);
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-logo {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .section-header h2 {
        font-size: 2rem;
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .about-text h3 {
        font-size: 1.8rem;
    }
    
    .features-list li {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .features-list .icon {
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
    }
}