/* 引入自定义字体 */
@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Thin.ttf') format('truetype');
    font-weight: 100;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Light.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Semibold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'HarmonyOS Sans SC';
    src: url('../Font/HarmonyOS_SansSC_Black.ttf') format('truetype');
    font-weight: 900;
    font-style: normal;
    font-display: swap;
}

/* CSS变量定义 */
:root {
    /* 主色调 - 采用现代深灰色系 */
    --primary-color: #4C5F6B;
    --primary-hover: #3A4B58;
    --primary-accent: #5A6F7E;
    --primary-light: #F1F5F9;
    
    /* 辅助色 */
    --secondary-color: #10B981;
    --secondary-hover: #059669;
    --accent-color: #F59E0B;
    --accent-hover: #D97706;
    
    /* 背景色 */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #FFFFFF;
    --bg-card: #FFFFFF;
    
    /* 文本色 */
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    
    /* 字体 */
    --font-family: 'HarmonyOS Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    
    /* 边框色 */
    --border-color: #E5E7EB;
    --border-light: #F3F4F6;
    --border-muted: #D1D5DB;
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* 圆角 */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 24px;
    --border-radius-full: 50%;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 25px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-button: 0 2px 4px rgba(76, 95, 107, 0.2);
    --shadow-button-hover: 0 4px 8px rgba(76, 95, 107, 0.3);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.4s ease;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 排版样式 */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 2.5rem;
    line-height: 1.2;
}

h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-hover);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    text-align: center;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    line-height: 1.5;
    font-family: var(--font-family);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    box-shadow: var(--shadow-button);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-button-hover);
    color: white;
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-button);
}

/* 英雄区按钮特殊样式 */
.hero__cta {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--border-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-muted);
}

.btn-secondary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: var(--border-radius-md);
}

/* 导航栏样式 */
.navbar {
    background-color: transparent;
    backdrop-filter: blur(20px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: all var(--transition-normal);
}

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

.navbar__logo img {
    height: 40px;
    width: auto;
}

.navbar__menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.navbar__item {
    position: relative;
}

.navbar__link {
    color: var(--text-primary);
    padding: var(--spacing-sm) 0;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.navbar__link:hover {
    color: var(--primary-accent);
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-accent);
    transition: width var(--transition-normal);
}

.navbar__link:hover::after {
    width: 100%;
}

/* 下拉菜单 */
.navbar__dropdown {
    position: relative;
}

.navbar__dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-tertiary);
    list-style: none;
    min-width: 180px;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    z-index: 1001;
    border: 1px solid var(--border-color);
}

.navbar__dropdown:hover .navbar__dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.navbar__dropdown-menu li {
    border-bottom: 1px solid var(--border-light);
}

.navbar__dropdown-menu li:last-child {
    border-bottom: none;
}

.navbar__dropdown-menu a {
    display: block;
    padding: var(--spacing-sm);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-sm);
}

.navbar__dropdown-menu a:hover {
    background-color: var(--primary-light);
    color: var(--primary-accent);
}

/* 汉堡菜单 */
.navbar__hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* 主题切换按钮样式 */
.navbar__theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-right: var(--spacing-sm);
    position: relative;
    background-color: transparent;
    border: 1px solid var(--border-light);
}

.navbar__theme-toggle:hover {
    background-color: var(--border-light);
    transform: translateY(-1px);
}

.navbar__theme-toggle i {
    position: absolute;
    font-size: 1.2rem;
    color: var(--text-primary);
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.navbar__theme-toggle i.fa-sun {
    opacity: 1;
    transform: scale(1);
}

.navbar__theme-toggle i.fa-moon {
    opacity: 0;
    transform: scale(0.8);
}

/* 深色模式下的主题切换按钮 */
[data-theme="dark"] .navbar__theme-toggle i.fa-sun {
    opacity: 0;
    transform: scale(0.8);
}

/* 深色模式下的主题切换按钮 */
[data-theme="dark"] .navbar__theme-toggle i.fa-moon {
    opacity: 1;
    transform: scale(1);
}

/* 主题切换按钮激活状态 */
.navbar__theme-toggle:active {
    transform: translateY(0);
}

/* 深色模式CSS变量 */
[data-theme="dark"] {
    /* 主色调 - 调整为适合深色背景 */
    --primary-color: #607D8B;
    --primary-hover: #455A64;
    --primary-accent: #78909C;
    --primary-light: #37474F;
    
    /* 背景色 */
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-tertiary: #1F2937;
    --bg-card: #1F2937;
    
    /* 文本色 */
    --text-primary: #F9FAFB;
    --text-secondary: #E5E7EB;
    --text-muted: #9CA3AF;
    
    /* 边框色 */
    --border-color: #374151;
    --border-light: #374151;
    --border-muted: #4B5563;
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 15px 25px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-button: 0 2px 4px rgba(96, 125, 139, 0.3);
    --shadow-button-hover: 0 4px 8px rgba(96, 125, 139, 0.4);
}

/* 深色模式下的产品英雄区背景装饰 */
[data-theme="dark"] .product-hero::before {
    background: radial-gradient(circle at 50% 50%, rgba(96, 125, 139, 0.15) 0%, transparent 70%);
}

/* 英雄区样式 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

/* 静态背景装饰 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(76, 95, 107, 0.08) 0%, transparent 70%);
    z-index: 1;
}

/* 粒子效果容器 */
.hero__particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

.hero__content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: fadeInUp 1s ease-out;
}

/* 标题动画 */
.hero__title {
    font-size: 3.5rem;
    margin-bottom: 0;
    color: var(--text-primary);
    animation: fadeInUp 0.5s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
    animation-delay: 0.1s;
    line-height: 1.2;
}

/* 副标题动画 */
.hero__subtitle {
    font-size: 1.25rem;
    margin-bottom: 0;
    color: var(--text-secondary);
    animation: fadeInUp 0.5s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
    animation-delay: 0.3s;
}

/* 英雄区描述 */
.hero__description {
    animation: fadeInUp 0.5s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
    animation-delay: 0.4s;
}

.hero__description p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* 英雄区功能标签 */
.hero__features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 0 auto;
    animation: fadeInUp 0.5s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
    animation-delay: 0.6s;
}

.hero__feature-item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background-color: rgba(76, 95, 107, 0.1);
    color: var(--text-primary);
    border-radius: var(--border-radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    text-decoration: none;
}

.hero__feature-item:link,
.hero__feature-item:visited {
    color: var(--text-primary);
    text-decoration: none;
}

.hero__feature-item:hover,
.hero__feature-item:active {
    color: var(--text-primary);
    text-decoration: none;
}

.hero__feature-item:hover {
    background-color: rgba(76, 95, 107, 0.2);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.hero__feature-item i {
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* 按钮动画 */
.hero__cta {
    animation: fadeInUp 0.5s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
    animation-delay: 0.7s;
    align-self: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero__title {
        font-size: 2.5rem;
    }
    
    .hero__subtitle {
        font-size: 1.1rem;
    }
    
    .hero__description p {
        font-size: 1rem;
    }
    
    .hero__features {
        gap: 0.75rem;
    }
    
    .hero__feature-item {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}

/* 通用淡入上移动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 关于我们区块 */
.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
    position: relative;
}

.about__container {
    position: relative;
    z-index: 2;
}

.about__title {
    animation: slideInLeft 0.8s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.about__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.about__item {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--border-color);
}

.about__item:nth-child(1) {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.about__item:nth-child(2) {
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.about__item:nth-child(3) {
    animation: fadeInUp 0.8s ease-out 0.9s forwards;
}

.about__item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

/* 精选项目区块 */
.projects {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
}

.projects__title {
    animation: slideInLeft 0.8s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.projects__card {
    background-color: var(--bg-tertiary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--border-color);
    position: relative;
}

.projects__card:nth-child(1) {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.projects__card:nth-child(2) {
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.projects__card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.projects__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-accent));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.projects__card:hover::before {
    transform: scaleX(1);
}

.projects__image {
    height: 200px;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f8f9fa;
    padding: 1rem;
}

.projects__image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
    filter: brightness(1);
    border-radius: var(--border-radius-sm);
}

.projects__card:hover .projects__image img {
    transform: scale(1.05);
    filter: brightness(1);
}

.projects__content {
    padding: var(--spacing-md);
}

.projects__content h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.projects__content p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.projects__cta {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    transition: all var(--transition-fast);
}

.projects__cta:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 警告卡片样式 */
.warning-section {
    padding: var(--spacing-md) 0;
    background-color: var(--bg-primary);
    margin-top: 80px;
}

.warning-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-left: 4px solid #FFC107;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    color: #856404;
    font-weight: 500;
    animation: slideInLeft 0.6s ease-out;
}

.warning-card i {
    font-size: 1.5rem;
    color: #FFC107;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

/* 产品页面样式 */
.product-hero {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.product-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(76, 95, 107, 0.08) 0%, transparent 70%);
    z-index: 1;
}

.product-hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 2;
    padding: var(--spacing-md) 0;
}

.product-hero__content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.product-hero__content h1 {
    font-size: 3rem;
    margin-bottom: 0;
    color: var(--text-primary);
    line-height: 1.2;
    font-weight: 700;
}

.product-hero__content p {
    font-size: 1.25rem;
    margin-bottom: 0;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 500px;
}

.product-hero__content .btn-primary {
    max-width: 200px;
    width: auto;
    align-self: flex-start;
}

.product-hero__image {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.product-hero__image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    background-color: transparent;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.product-hero__image img:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

/* 功能列表样式 */
.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

.features h2 {
    margin-bottom: var(--spacing-lg);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.features__item {
    background-color: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.features__item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-accent));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.features__item:hover::before {
    transform: scaleX(1);
}

.features__item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-muted);
}

.features__icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background-color: rgba(76, 95, 107, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--primary-color);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.features__item:hover .features__icon {
    transform: scale(1.1);
    background-color: rgba(76, 95, 107, 0.15);
    box-shadow: var(--shadow-md);
}

.features__item h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
}

.features__item p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* 视频演示区域样式 */
.video-demo {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

.video-demo h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    text-align: center;
}

.video-card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    margin-top: var(--spacing-lg);
}

.video-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
}

.video-card video {
    display: block;
    width: 100%;
    height: auto;
    border: none;
    background-color: #000;
}

/* 下载区域样式 */
.download {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
}

.download h2 {
    margin-bottom: var(--spacing-lg);
}

.download__content {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.download__content:hover {
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.download__info h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
}

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

.download__info p {
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.download__buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

.download__buttons .btn-primary {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-button);
}

.download__buttons .btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-button-hover);
}

.download__buttons .btn-primary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-button);
}

.download__buttons .btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.download__buttons .btn-secondary:hover {
    background-color: var(--border-light);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-muted);
    color: var(--text-primary);
}

.download__buttons .btn-secondary:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* 更新日志样式 */
.changelog {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

.changelog h2 {
    margin-bottom: var(--spacing-lg);
}

.changelog__item {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.changelog__item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-muted);
}

.changelog__header {
    padding: var(--spacing-md);
    background-color: var(--bg-card);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--border-light);
}

.changelog__header:hover {
    background-color: var(--border-light);
}

.changelog__header h3 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.changelog__date {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: normal;
    font-family: var(--font-family);
}

.changelog__toggle {
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
}

.changelog__toggle:hover {
    background-color: rgba(76, 95, 107, 0.1);
    transform: scale(1.1);
}

.changelog__item.active .changelog__toggle {
    transform: rotate(180deg);
    background-color: rgba(76, 95, 107, 0.15);
}

.changelog__body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
    background-color: var(--bg-card);
}

.changelog__item.active .changelog__body {
    max-height: 500px;
    padding: var(--spacing-lg);
}

.changelog__body ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.changelog__body li {
    margin-bottom: 0;
    position: relative;
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    line-height: 1.6;
    font-size: 0.95rem;
}

.changelog__body li::before {
    content: '✓';
    position: absolute;
    left: var(--spacing-sm);
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1rem;
    line-height: 1.6;
    background-color: rgba(16, 185, 129, 0.1);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.changelog__body li:hover {
    color: var(--text-primary);
    padding-left: calc(var(--spacing-lg) + 5px);
}

/* 系统要求样式 */
.system-requirements {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-secondary);
}

.system-requirements h2 {
    animation: slideInLeft 0.8s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
}

.system-requirements__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.system-requirements__item {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--border-color);
}

.system-requirements__item:nth-child(1) {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.system-requirements__item:nth-child(2) {
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.system-requirements__item:nth-child(3) {
    animation: fadeInUp 0.8s ease-out 0.5s forwards;
}

.system-requirements__item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.system-requirements__item h3 {
    color: var(--primary-accent);
    margin-bottom: var(--spacing-sm);
}

.system-requirements__item p {
    color: var(--text-secondary);
}

/* 用户评价样式 */
.testimonials {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-primary);
}

.testimonials h2 {
    animation: slideInLeft 0.8s ease-out;
    opacity: 0;
    animation-fill-mode: forwards;
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.testimonials__card {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    border: 1px solid var(--border-color);
    position: relative;
}

.testimonials__card:nth-child(1) {
    animation: fadeInUp 0.8s ease-out 0.3s forwards;
}

.testimonials__card:nth-child(2) {
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.testimonials__card:nth-child(3) {
    animation: fadeInUp 0.8s ease-out 0.5s forwards;
}

.testimonials__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.testimonials__card::before {
    content: '"';
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 3rem;
    color: rgba(64, 150, 255, 0.1);
    font-family: Georgia, serif;
    animation: quoteEntrance 0.5s ease-out;
}

@keyframes quoteEntrance {
    from {
        opacity: 0;
        transform: scale(0.8) rotate(-10deg);
    }
    to {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

.testimonials__content {
    margin-bottom: var(--spacing-md);
    font-style: italic;
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
    z-index: 2;
}

.testimonials__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.9rem;
    padding-left: var(--spacing-md);
}

.testimonials__author i {
    color: var(--primary-color);
    font-size: 1.2rem;
}

/* 页脚样式 */
.footer {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

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

.footer__section h3 {
    margin-bottom: 0;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.footer__section p {
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer__section ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__section ul li {
    margin-bottom: 0;
    transition: transform var(--transition-normal);
}

.footer__section ul li:hover {
    transform: translateX(5px);
}

.footer__section ul li a {
    color: var(--text-secondary);
    transition: color var(--transition-normal);
    display: inline-block;
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer__section ul li a:hover {
    color: var(--primary-color);
}

.footer__social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: 0;
}

.footer__social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background-color: var(--bg-secondary);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    font-size: 1.25rem;
}

.footer__social-links a:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    font-size: 0.9rem;
    position: relative;
    z-index: 2;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* 响应式设计 */
/* 桌面小屏 */
@media (max-width: 1366px) {
    .container {
        max-width: 1100px;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .product-hero-content h1 {
        font-size: 2.75rem;
    }
    
    .spacing-lg {
        padding: var(--spacing-md) 0;
    }
}

/* 平板横屏 */
@media (max-width: 1024px) {
    .container {
        max-width: 900px;
    }
    
    .product-hero .container,
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .product-hero-content h1 {
        font-size: 2.5rem;
    }
    
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-sm);
    }
}

/* 平板竖屏 */
@media (max-width: 768px) {
    .container {
        max-width: 700px;
    }
    
    .hamburger {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background-color: var(--bg-tertiary);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal), opacity var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
        gap: var(--spacing-sm);
        opacity: 0;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        left: 0;
        opacity: 1;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: transparent;
        min-width: auto;
        border: none;
        margin-top: var(--spacing-xs);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .requirements-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .social-links {
        justify-content: center;
    }
    
    .product-image img {
        max-width: 90%;
    }
}

/* 移动端 */
@media (max-width: 480px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: 80px 0 40px;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero p {
        font-size: 0.9rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .download-content {
        padding: var(--spacing-md);
    }
    
    .download-buttons {
        flex-direction: column;
    }
    
    .product-hero-content {
        text-align: center;
    }
    
    .product-image img {
        max-width: 100%;
    }
    
    .footer-section {
        margin-bottom: var(--spacing-md);
    }
    
    .footer-bottom {
        font-size: 0.8rem;
    }
    
    /* 减小间距 */
    .about,
    .projects,
    .features,
    .download,
    .changelog,
    .system-requirements,
    .testimonials {
        padding: var(--spacing-lg) 0;
    }
    
    .container > h2 {
        margin-bottom: var(--spacing-md);
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 摇晃动画 */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

.fade-in-up {
    animation: fadeInUp var(--transition-slow) ease-out;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}