/* ========================================
   Octopus Game Studio - 官网样式
   ======================================== */

/* CSS 变量 */
:root {
    /* 主色调 */
    --color-primary: #6366F1;
    --color-primary-light: #818CF8;
    --color-secondary: #8B5CF6;
    --color-accent: #F59E0B;
    
    /* 中性色 */
    --color-bg-dark: #0F172A;
    --color-bg-card: #1E293B;
    --color-bg-card-hover: #334155;
    --color-text-primary: #F8FAFC;
    --color-text-secondary: #94A3B8;
    --color-text-muted: #64748B;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #A855F7 100%);
    --gradient-hero: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    --gradient-glow: radial-gradient(circle at 30% 30%, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    
    /* 字体 */
    --font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-dark);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
}

/* 容器 */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

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

.btn-full {
    width: 100%;
}

.btn-icon {
    width: 1.25rem;
    height: 1.25rem;
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 var(--spacing-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--color-secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--color-accent);
    top: 50%;
    left: 30%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -50px) scale(1.1); }
    50% { transform: translate(0, -100px) scale(1); }
    75% { transform: translate(-50px, -50px) scale(0.9); }
}

#particleCanvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-lg);
}

.badge-icon {
    font-size: 1rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 540px;
    margin-bottom: var(--spacing-xl);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat-item {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-light);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-left: var(--spacing-xs);
}

/* Hero 视觉区域 */
.hero-visual {
    position: relative;
    height: 100%;
    min-height: 400px;
}

.game-preview {
    position: relative;
    width: 100%;
    height: 100%;
}

.preview-card {
    position: absolute;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    overflow: hidden;
}

.preview-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-glow);
}

.card-glow {
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.preview-card:hover .card-glow {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.card-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.card-content p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.card-1 {
    top: 0;
    left: 0;
    width: 220px;
    animation: float-card 6s ease-in-out infinite;
}

.card-2 {
    top: 100px;
    right: 0;
    width: 200px;
    animation: float-card 6s ease-in-out infinite;
    animation-delay: -2s;
}

.card-3 {
    bottom: 0;
    left: 50px;
    width: 180px;
    animation: float-card 6s ease-in-out infinite;
    animation-delay: -4s;
}

@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-text-secondary);
    border-radius: var(--radius-full);
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--color-text-secondary);
    border-radius: var(--radius-full);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 20px; }
}

/* ========================================
   通用区块样式
   ======================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
}

/* ========================================
   核心优势
   ======================================== */
.features {
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, rgba(99, 102, 241, 0.05) 50%, var(--color-bg-dark) 100%);
}

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

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon-wrapper {
    position: relative;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.feature-icon {
    font-size: 2rem;
    position: relative;
    z-index: 1;
}

.icon-glow {
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    opacity: 0.2;
    filter: blur(20px);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.feature-description {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    position: relative;
    z-index: 1;
}

.tag {
    padding: 4px 10px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-primary-light);
}

/* ========================================
   游戏作品展示
   ======================================== */
.games {
    background: var(--color-bg-dark);
}

.games-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.25rem;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.game-card {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
}

.game-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

.game-card.hidden {
    display: none;
}

.game-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.game-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-icon {
    font-size: 4rem;
    opacity: 0.8;
}

.game-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.game-card:hover .game-overlay {
    opacity: 1;
}

.game-info {
    padding: var(--spacing-lg);
}

.game-category {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-primary-light);
    margin-bottom: var(--spacing-sm);
}

.game-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.game-description {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.game-stats {
    display: flex;
    gap: var(--spacing-md);
}

.game-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.game-stat svg {
    width: 16px;
    height: 16px;
}

.games-cta {
    text-align: center;
}

/* ========================================
   数据统计
   ======================================== */
.stats {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    padding: var(--spacing-3xl) 0;
}

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

.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
}

.stat-card .stat-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.stat-card .stat-number-wrapper {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 4px;
}

.stat-card .stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.stat-card .stat-label {
    font-size: 1rem;
    color: var(--color-text-secondary);
    display: block;
}

/* ========================================
   关于我们
   ======================================== */
.about {
    background: var(--color-bg-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-text .section-tag,
.about-text .section-title {
    text-align: left;
}

.about-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-values {
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.value-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.value-item:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateX(8px);
}

.value-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.value-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.value-content p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.about-visual {
    position: relative;
}

.about-image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: var(--spacing-md);
    height: 400px;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image .image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.image-1 {
    grid-row: span 2;
}

.image-2 {
    grid-column: 2;
}

.image-3 {
    grid-column: 2;
}

/* ========================================
   合作伙伴
   ======================================== */
.partners {
    background: linear-gradient(180deg, var(--color-bg-dark) 0%, rgba(99, 102, 241, 0.05) 50%, var(--color-bg-dark) 100%);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-lg);
}

.partner-logo {
    aspect-ratio: 3 / 2;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    filter: grayscale(100%);
    opacity: 0.6;
}

.partner-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-4px);
}

.logo-placeholder {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.partner-logo:hover .logo-placeholder {
    color: var(--color-text-primary);
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    background: var(--color-bg-dark);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-info .section-tag,
.contact-info .section-title {
    text-align: left;
}

.contact-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-primary-light);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-text {
    display: flex;
    flex-direction: column;
}

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

.contact-value {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

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

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-4px);
}

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

/* 联系表单 */
.contact-form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem 1rem;
    background: var(--color-bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--color-bg-card);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

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

.footer-logo .logo-icon {
    width: 32px;
    height: 32px;
}

.footer-logo span {
    font-size: 1.125rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-description {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.footer-column h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

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

.footer-social a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: white;
}

.footer-social svg {
    width: 16px;
    height: 16px;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .games-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        order: -1;
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-bg-card);
        flex-direction: column;
        padding: 100px var(--spacing-lg) var(--spacing-lg);
        transition: right var(--transition-base);
        border-left: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .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(5px, -5px);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .features-grid,
    .games-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ========================================
   动画效果
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 滚动显示动画 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}