/* ========================================
   影文落地页 - 深色太空主题样式文件
   风格参考: ai-video-assistant
   ======================================== */

/* CSS 变量定义 - 深色主题 */
:root {
    /* 主题背景色 */
    --bg-primary: #030014;
    --bg-surface: #0F172A;
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-hover: rgba(255, 255, 255, 0.06);
    
    /* 强调色 */
    --accent-indigo: #6366f1;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    
    /* 主色调 */
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #a855f7;
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-light: #ffffff;
    
    /* 边框 */
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(99, 102, 241, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
    
    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 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-glow: 0 0 40px -10px rgba(99, 102, 241, 0.5);
    --shadow-glow-lg: 0 0 60px -15px rgba(99, 102, 241, 0.6);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* 过渡 */
    --transition-fast: 0.15s ease;
    --transition-normal: 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: 'Outfit', 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 选中文字样式 */
::selection {
    background-color: rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
}

/* ========================================
   背景光晕动画
   ======================================== */
.background-blobs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 40%;
    height: 40%;
    background: rgba(99, 102, 241, 0.15);
    animation: blob 10s infinite;
}

.blob-2 {
    top: 20%;
    right: -10%;
    width: 30%;
    height: 30%;
    background: rgba(168, 85, 247, 0.12);
    animation: blob 10s infinite 2s;
}

.blob-3 {
    bottom: -10%;
    left: 20%;
    width: 30%;
    height: 30%;
    background: rgba(59, 130, 246, 0.12);
    animation: blob 10s infinite 4s;
}

@keyframes blob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -50px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

/* ========================================
   玻璃态面板组件
   ======================================== */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    transition: all var(--transition-normal);
}

.glass-panel:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(99, 102, 241, 0.3);
}

/* 降级方案 */
@supports not (backdrop-filter: blur(16px)) {
    .glass-panel {
        background: rgba(15, 23, 42, 0.95);
    }
}

/* ========================================
   渐变文字组件
   ======================================== */
.text-gradient {
    background: linear-gradient(to right, #818cf8, #c084fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.text-gradient-primary {
    background: linear-gradient(135deg, #FFF 0%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-accent {
    background: linear-gradient(to right, #6366f1, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   通用容器
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 10;
}

/* ========================================
   链接样式
   ======================================== */
a {
    color: var(--accent-indigo);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-purple);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--text-light);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    color: var(--bg-primary);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.4);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* ========================================
   区块标题
   ======================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.125rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.section-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent-indigo);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

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

.header.scrolled {
    padding: var(--spacing-sm) 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all var(--transition-slow);
}

.header.scrolled .nav-container {
    background: rgba(3, 0, 20, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3), 0 0 20px rgba(99, 102, 241, 0.1);
    max-width: 1100px;
}

/* Logo 样式 */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

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

/* Logo 图标容器 */
.logo-icon-wrapper {
    position: relative;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* Logo 发光效果 */
.logo-icon-glow {
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    border-radius: var(--radius-lg);
    filter: blur(6px);
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.logo:hover .logo-icon-glow {
    opacity: 0.9;
}

/* Logo 图标 */
.logo-icon {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-icon i {
    font-size: 1rem;
    color: var(--accent-indigo);
}

.logo-icon-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.logo-text {
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: 0.025em;
}

.logo-text-accent {
    color: var(--accent-indigo);
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 0;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    padding: 0.25rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.nav-menu li {
    margin: 0;
}

.nav-menu a {
    display: block;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.nav-menu a::after {
    display: none;
}

.nav-menu a:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* 移动端菜单中的 CTA 按钮（默认隐藏） */
.nav-menu-cta {
    display: none;
}

/* 导航栏 CTA 按钮 */
.nav-cta {
    position: relative;
    display: inline-flex;
    align-items: center;
    background-color: var(--text-light);
    color: var(--bg-primary) !important;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-normal);
    overflow: hidden;
    margin-left: var(--spacing-md);
}

.nav-cta-shine {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(99, 102, 241, 0.3), rgba(168, 85, 247, 0.3), rgba(99, 102, 241, 0.3));
    background-size: 200% 100%;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.nav-cta-content {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-cta-content i {
    font-size: 0.875rem;
    color: var(--accent-indigo);
}

.nav-cta:hover {
    color: var(--bg-primary) !important;
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

.nav-cta:hover .nav-cta-shine {
    opacity: 1;
    animation: shine 2s ease-in-out infinite;
}

@keyframes shine {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* 汉堡菜单按钮 */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.hamburger:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hamburger:focus {
    outline: 2px solid var(--accent-indigo);
    outline-offset: 2px;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
    transform-origin: center;
}

/* 汉堡菜单激活状态动画 */
.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ========================================
   首屏区域样式
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem var(--spacing-md) var(--spacing-2xl);
    background-color: var(--bg-primary);
    color: var(--text-light);
    position: relative;
    overflow: hidden;
}

/* 居中布局样式 */
.hero-centered .hero-container {
    justify-content: center;
}

.hero-content-centered {
    max-width: 800px;
    text-align: center;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    gap: var(--spacing-xl);
    position: relative;
    z-index: 10;
}

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

/* 版本标签 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge-dot {
    position: relative;
    width: 8px;
    height: 8px;
}

.hero-badge-dot::before {
    content: '';
    position: absolute;
    inset: 0;
    background: #22c55e;
    border-radius: 50%;
    animation: ping 1.5s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.hero-badge-dot::after {
    content: '';
    position: absolute;
    inset: 0;
    background: #22c55e;
    border-radius: 50%;
}

@keyframes ping {
    75%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.15;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero-title-main {
    display: block;
    background: linear-gradient(135deg, #FFF 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-accent {
    display: block;
    background: linear-gradient(to right, #c084fc, #f472b6, #fb7185);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 居中描述文字 */
.hero-description-centered {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 居中 CTA 按钮 */
.hero-cta-centered {
    justify-content: center;
}

/* 系统要求标签 */
.hero-tags {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-tag i {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.3s both;
}

/* CTA 按钮区域 */
.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta .btn-primary {
    min-width: 180px;
    height: 56px;
    font-size: 1rem;
}

.hero-cta .btn-secondary {
    min-width: 180px;
    height: 56px;
    font-size: 1rem;
}

/* 功能亮点区域 */
.hero-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    animation: fadeInUp 0.8s ease-out 0.5s both;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.625rem 1rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-glass);
    transition: all var(--transition-fast);
}

.highlight-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.highlight-icon {
    font-size: 1rem;
    color: var(--accent-indigo);
}

.highlight-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* 首屏图片区域 */
.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease-out 0.4s both;
}

.hero-screenshot-wrapper {
    position: relative;
    max-width: 100%;
}

/* 截图发光效果 */
.hero-screenshot-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    filter: blur(60px);
    z-index: -1;
}

.hero-screenshot {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 40px rgba(99, 102, 241, 0.1);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-glass);
    min-height: 300px;
    object-fit: cover;
}

/* 截图装饰效果 */
.screenshot-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, transparent 50%);
    border-radius: 50%;
    filter: blur(30px);
}

/* 向下滚动提示 */
.hero-scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    animation: fadeIn 1s ease-out 1s both;
}

.scroll-down {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    animation: bounce 2s infinite;
}

.scroll-down:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--accent-indigo);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ========================================
   功能特性区域样式
   ======================================== */
.features {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
    position: relative;
}

/* 背景发光 */
.features::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    filter: blur(100px);
    pointer-events: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 10;
}

/* 功能卡片样式 */
.feature-card {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-indigo), var(--accent-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

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

.feature-card:hover::before {
    transform: scaleX(1);
}

/* 功能图标 */
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    transform: scale(1.1);
}

.feature-icon i {
    font-size: 1.5rem;
    color: var(--accent-indigo);
    transition: color var(--transition-fast);
}

.feature-card:hover .feature-icon i {
    color: var(--text-light);
}

/* 功能标题 */
.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

/* 功能描述 */
.feature-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

/* 功能详情列表 */
.feature-details {
    list-style: none;
    margin-bottom: var(--spacing-md);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-normal);
}

.feature-card.expanded .feature-details {
    max-height: 200px;
    opacity: 1;
    margin-bottom: var(--spacing-md);
}

.feature-details li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}

.feature-details li:last-child {
    border-bottom: none;
}

.feature-details li i {
    color: var(--accent-cyan);
    font-size: 0.75rem;
}

/* 展开/收起按钮 */
.feature-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: var(--accent-indigo);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.feature-toggle:hover {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    color: var(--text-light);
}

.feature-toggle:focus {
    outline: 2px solid var(--accent-indigo);
    outline-offset: 2px;
}

.toggle-icon {
    transition: transform var(--transition-fast);
}

.feature-card.expanded .toggle-icon {
    transform: rotate(180deg);
}

.feature-card.expanded .toggle-text::before {
    content: '收起';
}

.feature-card.expanded .toggle-text {
    font-size: 0;
}

.feature-card.expanded .toggle-text::before {
    font-size: 0.875rem;
}

/* 功能卡片入场动画 */
.feature-card {
    animation: featureCardFadeIn 0.6s ease-out backwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }

@keyframes featureCardFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* ========================================
   使用场景区域样式
   ======================================== */
.scenarios {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
    position: relative;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 10;
}

/* 场景卡片样式 */
.scenario-card {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-indigo), var(--accent-purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

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

.scenario-card:hover::before {
    transform: scaleX(1);
}

/* 场景图标 */
.scenario-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-fast);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.scenario-card:hover .scenario-icon {
    transform: scale(1.1);
    box-shadow: 0 12px 30px rgba(99, 102, 241, 0.4);
}

.scenario-icon i {
    font-size: 1.5rem;
    color: var(--text-light);
}

/* 场景标题 */
.scenario-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

/* 场景描述 */
.scenario-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

/* 工作流程图样式 */
.scenario-flow {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border: 1px dashed var(--border-glass);
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.scenario-card:hover .scenario-flow {
    background: rgba(99, 102, 241, 0.05);
    border-color: rgba(99, 102, 241, 0.3);
}

/* 流程步骤 */
.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    min-width: 70px;
}

.flow-step-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-glass);
}

.scenario-card:hover .flow-step-icon {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.flow-step-icon i {
    font-size: 1rem;
    color: var(--accent-indigo);
    transition: color var(--transition-fast);
}

.scenario-card:hover .flow-step-icon i {
    color: var(--text-light);
}

.flow-step-text {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-align: center;
    white-space: nowrap;
}

/* 流程箭头 */
.flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
    padding: 0 var(--spacing-xs);
}

.scenario-card:hover .flow-arrow {
    color: var(--accent-indigo);
}

.scenario-card:hover .flow-arrow i {
    animation: arrowPulse 1s ease-in-out infinite;
}

@keyframes arrowPulse {
    0%, 100% { transform: translateX(0); opacity: 1; }
    50% { transform: translateX(3px); opacity: 0.7; }
}

/* 场景特性列表 */
.scenario-features {
    list-style: none;
    margin: 0;
    padding: 0;
}

.scenario-features li {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-fast);
}

.scenario-features li:last-child {
    border-bottom: none;
}

.scenario-card:hover .scenario-features li {
    color: var(--text-primary);
}

.scenario-features li i {
    color: var(--accent-cyan);
    font-size: 0.875rem;
    flex-shrink: 0;
}

/* 场景卡片入场动画 */
.scenario-card {
    animation: scenarioCardFadeIn 0.6s ease-out backwards;
}

.scenario-card:nth-child(1) { animation-delay: 0.1s; }
.scenario-card:nth-child(2) { animation-delay: 0.2s; }
.scenario-card:nth-child(3) { animation-delay: 0.3s; }

@keyframes scenarioCardFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   技术规格区域样式
   ======================================== */
.specs {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
    position: relative;
}

.specs-content {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

/* 系统配置表格容器 */
.specs-table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-xl);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-lg);
}

/* 系统配置表格 */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.specs-table thead {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    color: var(--text-light);
}

.specs-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

.specs-table th i {
    margin-right: 0.5rem;
}

.specs-header-item {
    width: 25%;
}

.specs-header-min,
.specs-header-rec {
    width: 37.5%;
}

.specs-header-rec {
    background-color: rgba(255, 255, 255, 0.1);
}

.specs-table tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background-color var(--transition-fast);
}

.specs-table tbody tr:last-child {
    border-bottom: none;
}

.specs-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.specs-table td {
    padding: var(--spacing-md);
    color: var(--text-secondary);
}

.specs-item-name {
    font-weight: 600;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.specs-item-name i {
    width: 24px;
    text-align: center;
    color: var(--accent-indigo);
    font-size: 1rem;
}

/* 支持的文件格式区域 */
.specs-formats {
    margin-bottom: var(--spacing-lg);
}

.specs-formats-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.specs-formats-title i {
    color: var(--accent-indigo);
}

.specs-formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

/* 格式卡片 */
.format-card {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.format-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

.format-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
}

.format-icon i {
    font-size: 1.25rem;
    color: var(--text-light);
}

.format-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.format-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.format-list li {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-glass);
    transition: all var(--transition-fast);
}

.format-card:hover .format-list li {
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--accent-indigo);
}

/* GPU加速提示 */
.specs-note {
    display: flex;
    gap: var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.specs-note-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.specs-note-icon i {
    font-size: 1.25rem;
    color: var(--text-light);
}

.specs-note-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.specs-note-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}


/* ========================================
   价格区域样式
   ======================================== */
.pricing {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
    position: relative;
}

/* 背景发光 */
.pricing::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

/* 四列价格卡片布局 */
.pricing-grid-4 {
    max-width: 1200px;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

/* 价格卡片样式 */
.pricing-card {
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    text-align: center;
}

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

/* 推荐卡片特殊样式 */
.pricing-card-featured {
    border-color: var(--accent-indigo);
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.1) 0%, var(--bg-glass) 100%);
    transform: scale(1.02);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.2);
}

.pricing-card-featured:hover {
    transform: scale(1.02) translateY(-8px);
    box-shadow: 0 0 50px rgba(99, 102, 241, 0.3);
}

/* 推荐标签 */
.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    color: var(--text-light);
    padding: 0.375rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* 价格标题 */
.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* 价格描述 */
.pricing-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* 价格显示 */
.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    flex-wrap: wrap;
}

/* 原价划线样式 */
.price-original {
    font-size: 1rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-right: 0.5rem;
    font-weight: 400;
}

.price-currency {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.price-period {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 功能列表 */
.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li i {
    font-size: 1rem;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

/* 受限功能样式 */
.pricing-features li.feature-limited {
    color: var(--text-muted);
}

.pricing-features li.feature-limited i {
    color: var(--text-muted);
}

/* 购买按钮 */
.pricing-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-full);
}

.pricing-card-featured .pricing-btn {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    color: var(--text-light);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.pricing-card-featured .pricing-btn:hover {
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
    transform: translateY(-2px);
}

/* 保障说明 */
.pricing-guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--accent-cyan);
    margin: 0;
}

.pricing-guarantee i {
    font-size: 0.875rem;
}

/* 备注说明 */
.pricing-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin: 0;
}

.pricing-note i {
    font-size: 0.875rem;
    color: var(--accent-indigo);
}

/* 免费试用提示 */
.pricing-trial-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(168, 85, 247, 0.1));
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--accent-indigo);
    font-weight: 500;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.pricing-trial-note i {
    font-size: 1.125rem;
}

/* 联系方式区域 */
.pricing-contact {
    margin-top: var(--spacing-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.contact-card {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-glass);
}

.contact-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.contact-icon i {
    font-size: 1.5rem;
    color: var(--text-light);
}

.contact-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.contact-content > p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
    transition: all var(--transition-fast);
}

.contact-method:hover {
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--accent-indigo);
}

.contact-method i {
    font-size: 1rem;
    color: var(--accent-indigo);
}

/* ========================================
   下载区域样式
   ======================================== */
.download {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-surface);
    color: var(--text-light);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 背景发光效果 */
.download::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}

.download .section-title {
    color: var(--text-light);
    position: relative;
    z-index: 10;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.download .section-subtitle {
    color: var(--text-secondary);
    position: relative;
    z-index: 10;
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 10;
}

/* 下载主按钮区域 */
.download-main {
    margin-bottom: var(--spacing-lg);
}

/* 胶囊形状下载按钮 */
.btn-download-pill {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    background-color: var(--text-light);
    color: var(--bg-primary);
    padding: 1rem 1rem 1rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.15);
    min-width: 320px;
}

.btn-download-pill:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 50px rgba(255, 255, 255, 0.25);
    color: var(--bg-primary);
}

.download-pill-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.download-pill-title {
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--bg-primary);
}

.download-pill-info {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: 0.125rem;
}

.download-pill-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--bg-surface);
    border-radius: 50%;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.download-pill-icon i {
    font-size: 1.25rem;
    color: var(--text-light);
}

.btn-download-pill:hover .download-pill-icon {
    background: var(--accent-indigo);
}

/* 下载链接区域 - 胶囊形状 */
.download-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.download-link-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    background: transparent;
    border: 1px solid var(--border-glass);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.download-link-pill:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.download-link-pill i {
    font-size: 1rem;
    color: var(--text-secondary);
}

.download-link-pill:hover i {
    color: var(--text-primary);
}

/* 保留旧样式兼容 */
.btn-download {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    background-color: var(--text-light);
    color: var(--bg-primary);
    padding: 1.25rem 2.5rem;
    border-radius: var(--radius-xl);
    font-weight: 700;
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.2), 0 0 30px rgba(99, 102, 241, 0.2);
    position: relative;
    overflow: hidden;
}

.btn-download::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-download:hover::before {
    left: 100%;
}

.btn-download:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 15px 50px rgba(255, 255, 255, 0.3), 0 0 50px rgba(99, 102, 241, 0.3);
    color: var(--bg-primary);
}

.btn-download i {
    font-size: 1.75rem;
    color: var(--accent-indigo);
    transition: transform var(--transition-fast);
}

.btn-download:hover i {
    transform: translateY(-2px);
    animation: downloadBounce 0.6s ease infinite;
}

@keyframes downloadBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.download-btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.download-btn-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.2;
}

.download-btn-size {
    font-size: 0.8125rem;
    font-weight: 500;
    opacity: 0.7;
    margin-top: 0.25rem;
}

/* 版本信息区域 */
.download-version {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-glass);
}

.version-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.version-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.version-number,
.version-date {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.version-divider {
    width: 1px;
    height: 40px;
    background: var(--border-glass);
}

/* 下载链接区域 - 旧样式 */
.download-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.625rem 1rem;
    border-radius: var(--radius-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.download-link:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(99, 102, 241, 0.3);
}

.download-link i {
    font-size: 1rem;
    color: var(--accent-indigo);
}

/* 系统要求提示 */
.download-requirements {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
}

.download-requirements p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    margin: 0;
    color: var(--text-secondary);
}

.download-requirements i {
    font-size: 0.875rem;
    color: var(--accent-indigo);
}


/* ========================================
   页脚样式
   ======================================== */
.footer {
    background-color: var(--bg-surface);
    color: var(--text-light);
    padding: var(--spacing-xl) 0 0;
    border-top: 1px solid var(--border-glass);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

/* 页脚品牌信息 */
.footer-info {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: var(--spacing-sm);
}

.footer-logo-icon {
    font-size: 1.5rem;
    color: var(--accent-indigo);
}

.footer-logo-icon-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.footer-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-indigo));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* 社交媒体链接 */
.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    color: var(--text-light);
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

/* 页脚链接列表 */
.footer-links h4,
.footer-support h4,
.footer-contact h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-links ul,
.footer-support ul {
    list-style: none;
}

.footer-links li,
.footer-support li {
    margin-bottom: var(--spacing-xs);
}

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

.footer-links a:hover,
.footer-support a:hover {
    color: var(--accent-indigo);
}

/* 页脚联系方式 */
.footer-contact p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.footer-contact-list {
    list-style: none;
    margin-top: var(--spacing-sm);
}

.footer-contact-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.footer-contact-list li i {
    width: 18px;
    text-align: center;
    color: var(--accent-indigo);
    font-size: 1rem;
}

.footer-contact-list li a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-contact-list li a:hover {
    color: var(--accent-indigo);
}

/* 页脚底部 */
.footer-bottom {
    border-top: 1px solid var(--border-glass);
    padding: var(--spacing-md) 0;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.footer-bottom-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--accent-indigo);
}

.footer-divider {
    color: var(--text-muted);
}

/* ========================================
   响应式样式
   ======================================== */

/* 平板端样式 (768px - 1200px) */
@media (max-width: 1200px) {
    .nav-menu {
        gap: 0;
    }

    .nav-menu a {
        padding: 0.5rem 1rem;
    }

    .hero-container {
        gap: var(--spacing-lg);
    }

    .hero-title {
        font-size: 3rem;
    }

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

    .pricing-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

/* 移动端样式 (<768px) */
@media (max-width: 768px) {
    /* 导航栏响应式 */
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: column;
        background: rgba(3, 0, 20, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 6rem var(--spacing-lg) var(--spacing-lg);
        gap: var(--spacing-sm);
        border: none;
        border-radius: 0;
        z-index: 999;
        justify-content: center;
        align-items: center;
    }

    .nav-menu.active {
        display: flex;
        animation: fadeIn 0.3s ease;
    }

    .nav-menu li {
        width: auto;
    }

    .nav-menu a {
        display: block;
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1.5rem;
        font-weight: 600;
        text-align: center;
        border-radius: var(--radius-lg);
    }

    .nav-menu a:hover {
        background: rgba(255, 255, 255, 0.1);
    }

    /* 移动端菜单中显示 CTA 按钮 */
    .nav-menu-cta {
        display: block !important;
        background: var(--accent-indigo);
        color: var(--text-light) !important;
        text-align: center;
        border-radius: var(--radius-full);
        margin-top: var(--spacing-md);
        padding: var(--spacing-md) var(--spacing-xl) !important;
        font-size: 1.25rem !important;
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
    }

    /* 隐藏桌面端 CTA 按钮 */
    .nav-cta {
        display: none;
    }

    /* 显示汉堡菜单 */
    .hamburger {
        display: flex;
        position: relative;
        z-index: 1001;
    }

    /* 首屏响应式 */
    .hero {
        padding-top: 6rem;
        padding-bottom: 4rem;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .hero-description {
        font-size: 1rem;
    }

    .hero-cta {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        min-width: 160px;
        height: 50px;
    }

    /* 系统标签响应式 */
    .hero-tags {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-highlights {
        justify-content: center;
    }

    .highlight-item {
        padding: 0.5rem 0.875rem;
    }

    .highlight-text {
        font-size: 0.8125rem;
    }

    .hero-image {
        margin-top: var(--spacing-lg);
        width: 100%;
    }

    .hero-screenshot-wrapper {
        max-width: 90%;
        margin: 0 auto;
    }

    .screenshot-decoration {
        display: none;
    }

    .hero-scroll-hint {
        bottom: 1rem;
    }

    /* 区块标题响应式 */
    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* 功能区域响应式 */
    .features {
        padding: var(--spacing-xl) 0;
    }

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

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

    .feature-icon {
        width: 48px;
        height: 48px;
    }

    .feature-icon i {
        font-size: 1.25rem;
    }

    .feature-title {
        font-size: 1.125rem;
    }

    .feature-desc {
        font-size: 0.875rem;
    }

    /* 场景区域响应式 */
    .scenarios {
        padding: var(--spacing-xl) 0;
    }

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

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

    .scenario-icon {
        width: 56px;
        height: 56px;
    }

    .scenario-icon i {
        font-size: 1.25rem;
    }

    .scenario-title {
        font-size: 1.25rem;
    }

    .scenario-desc {
        font-size: 0.875rem;
    }

    .scenario-flow {
        padding: var(--spacing-sm);
        gap: var(--spacing-xs);
    }

    .flow-step {
        min-width: 60px;
    }

    .flow-step-icon {
        width: 38px;
        height: 38px;
    }

    .flow-step-icon i {
        font-size: 0.875rem;
    }

    .flow-step-text {
        font-size: 0.6875rem;
    }

    .flow-arrow {
        font-size: 0.75rem;
        padding: 0;
    }

    /* 规格区域响应式 */
    .specs {
        padding: var(--spacing-xl) 0;
    }

    .specs-table-wrapper {
        margin-bottom: var(--spacing-lg);
    }

    .specs-table {
        font-size: 0.875rem;
    }

    .specs-table th,
    .specs-table td {
        padding: var(--spacing-sm);
    }

    .specs-item-name {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .specs-formats-grid {
        grid-template-columns: 1fr;
    }

    .specs-note {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    /* 价格区域响应式 */
    .pricing {
        padding: var(--spacing-xl) 0;
    }

    .pricing-grid,
    .pricing-grid-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        max-width: 400px;
    }

    .pricing-card-featured {
        transform: none;
        order: -1;
    }

    .pricing-card-featured:hover {
        transform: translateY(-8px);
    }

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

    .pricing-title {
        font-size: 1.25rem;
    }

    .price-amount {
        font-size: 2.5rem;
    }

    .price-currency {
        font-size: 1.25rem;
    }

    .pricing-features li {
        font-size: 0.875rem;
        padding: 0.5rem 0;
    }

    .contact-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: var(--spacing-md);
    }

    .contact-content > p {
        font-size: 0.875rem;
    }

    .contact-methods {
        justify-content: center;
    }

    .contact-method {
        font-size: 0.8125rem;
        padding: 0.375rem 0.75rem;
    }

    /* 下载区域响应式 */
    .download {
        padding: var(--spacing-xl) 0;
    }

    .btn-download {
        padding: 1rem 1.75rem;
        gap: var(--spacing-sm);
    }

    .btn-download i {
        font-size: 1.5rem;
    }

    .download-btn-title {
        font-size: 1.125rem;
    }

    .download-btn-size {
        font-size: 0.75rem;
    }

    .download-version {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .version-divider {
        width: 60%;
        height: 1px;
    }

    .download-links {
        gap: var(--spacing-sm);
    }

    .download-link {
        font-size: 0.875rem;
        padding: 0.5rem 0.875rem;
    }

    .download-requirements p {
        flex-direction: column;
        text-align: center;
        gap: 0.25rem;
    }

    /* 页脚响应式 */
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }

    .footer-info {
        grid-column: 1 / -1;
        max-width: 100%;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    .footer-bottom-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* 小屏幕移动端样式 (<480px) */
@media (max-width: 480px) {
    .hero {
        padding-top: 5rem;
    }

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

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
        max-width: 280px;
    }

    .hero-highlights {
        gap: var(--spacing-sm);
    }

    .highlight-item {
        padding: 0.375rem 0.75rem;
    }

    .highlight-icon {
        font-size: 0.875rem;
    }

    .highlight-text {
        font-size: 0.75rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    /* 小屏幕流程图垂直布局 */
    .scenario-flow {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .flow-step {
        flex-direction: row;
        justify-content: flex-start;
        gap: var(--spacing-sm);
        min-width: auto;
    }

    .flow-step-text {
        white-space: normal;
        text-align: left;
    }

    .flow-arrow {
        transform: rotate(90deg);
        padding: var(--spacing-xs) 0;
    }

    /* 小屏幕表格卡片式布局 */
    .specs-table,
    .specs-table thead,
    .specs-table tbody,
    .specs-table th,
    .specs-table td,
    .specs-table tr {
        display: block;
    }

    .specs-table thead {
        display: none;
    }

    .specs-table tbody tr {
        margin-bottom: var(--spacing-sm);
        border: 1px solid var(--border-glass);
        border-radius: var(--radius-lg);
        padding: var(--spacing-sm);
        background: var(--bg-glass);
    }

    .specs-table td {
        padding: var(--spacing-xs) 0;
        border: none;
        position: relative;
        padding-left: 50%;
    }

    .specs-table td::before {
        content: attr(data-label);
        position: absolute;
        left: 0;
        width: 45%;
        font-weight: 600;
        color: var(--text-primary);
    }

    .specs-item-name {
        padding-left: 0 !important;
        font-size: 1rem;
        color: var(--accent-indigo) !important;
        border-bottom: 1px solid var(--border-glass);
        padding-bottom: var(--spacing-xs);
        margin-bottom: var(--spacing-xs);
    }

    .specs-item-name::before {
        display: none;
    }

    .format-card {
        padding: var(--spacing-sm);
    }

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

    .format-icon i {
        font-size: 1rem;
    }

    .format-list li {
        font-size: 0.75rem;
        padding: 0.1875rem 0.5rem;
    }

    .specs-note {
        padding: var(--spacing-sm);
    }

    .specs-note-icon {
        width: 40px;
        height: 40px;
    }

    .specs-note-icon i {
        font-size: 1rem;
    }

    .specs-note-content h4 {
        font-size: 0.9375rem;
    }

    .specs-note-content p {
        font-size: 0.8125rem;
    }

    .pricing-badge {
        font-size: 0.75rem;
        padding: 0.25rem 1rem;
    }

    .pricing-title {
        font-size: 1.125rem;
    }

    .pricing-desc {
        font-size: 0.875rem;
    }

    .price-amount {
        font-size: 2rem;
    }

    .price-currency {
        font-size: 1rem;
    }

    .price-period {
        font-size: 0.875rem;
    }

    .pricing-btn {
        padding: 0.75rem 1rem;
        font-size: 0.9375rem;
    }

    .contact-icon {
        width: 52px;
        height: 52px;
    }

    .contact-icon i {
        font-size: 1.25rem;
    }

    .contact-content h4 {
        font-size: 1.125rem;
    }

    .contact-methods {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .contact-method {
        width: 100%;
        justify-content: center;
    }

    .btn-download {
        width: 100%;
        max-width: 300px;
        padding: 0.875rem 1.5rem;
        justify-content: center;
    }

    .download-btn-text {
        align-items: center;
        text-align: center;
    }

    .download-btn-title {
        font-size: 1rem;
    }

    .download-btn-size {
        font-size: 0.6875rem;
    }

    .download-links {
        flex-direction: column;
        align-items: center;
    }

    .download-link {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }

    .download-requirements p {
        font-size: 0.75rem;
    }

    /* 页脚小屏幕响应式 */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links,
    .footer-support,
    .footer-contact {
        text-align: center;
    }

    .footer-contact-list li {
        justify-content: center;
    }

    .footer-bottom-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* 减少移动端动画以提升性能 */
@media (max-width: 768px) {
    .blob {
        animation: none;
        opacity: 0.3;
    }

    .feature-card,
    .scenario-card {
        animation: none;
    }
}

/* ========================================
   软件界面截图展示区域 - 功能导航切换
   ======================================== */
.screenshots {
    padding: var(--spacing-2xl) 0;
    background-color: var(--bg-primary);
    position: relative;
}

/* 功能导航切换展示 */
.feature-showcase {
    max-width: 1200px;
    margin: 0 auto;
}

/* 功能图标导航 */
.feature-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
    padding: 0 1rem;
    max-width: 750px;
    margin-left: auto;
    margin-right: auto;
}

/* 第一行显示6个，第二行显示5个居中 */
.feature-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 90px;
    flex: 0 0 auto;
}

/* 控制每行显示数量：6个一行 */
@media (min-width: 992px) {
    .feature-nav {
        max-width: 720px;
    }
    
    .feature-nav-item {
        /* 6个一行：(720px - 5*1rem间距) / 6 ≈ 110px */
        flex: 0 0 calc((100% - 5 * 1rem) / 6);
        max-width: 110px;
    }
}

.feature-nav-item:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-3px);
}

.feature-nav-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    border-color: var(--accent-indigo);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.feature-nav-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    font-size: 1.25rem;
    color: white;
    transition: all var(--transition-normal);
}

.feature-nav-item:hover .feature-nav-icon {
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.5);
}

.feature-nav-item.active .feature-nav-icon {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
}

.feature-nav-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-align: center;
    transition: color var(--transition-normal);
}

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

/* 截图展示区域 */
.feature-screenshot-container {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    perspective: 1000px;
}

.feature-screenshot {
    display: none;
    opacity: 0;
    transform: rotateX(5deg) scale(0.98);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-screenshot.active {
    display: block;
    opacity: 1;
    transform: rotateX(0deg) scale(1);
}

.feature-screenshot img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1),
        0 0 60px -15px rgba(99, 102, 241, 0.3);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.feature-screenshot img:hover {
    transform: scale(1.02);
    box-shadow: 
        0 30px 60px -15px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.15),
        0 0 80px -20px rgba(99, 102, 241, 0.4);
}

/* 截图顶部装饰条 */
.feature-screenshot::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent-indigo), var(--accent-purple), transparent);
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    z-index: 10;
}

/* 功能导航响应式 */
@media (max-width: 992px) {
    .feature-nav {
        gap: 0.75rem;
        max-width: 600px;
    }
    
    .feature-nav-item {
        padding: 0.75rem 1rem;
        min-width: 80px;
        /* 5个一行 */
        flex: 0 0 calc((100% - 4 * 0.75rem) / 5);
    }
    
    .feature-nav-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .feature-nav-text {
        font-size: 0.75rem;
    }
}

@media (max-width: 768px) {
    .feature-nav {
        gap: 0.5rem;
        margin-bottom: 1.5rem;
        max-width: 100%;
    }
    
    .feature-nav-item {
        padding: 0.5rem 0.75rem;
        min-width: 65px;
        /* 4个一行 */
        flex: 0 0 calc((100% - 3 * 0.5rem) / 4);
    }
    
    .feature-nav-icon {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
    
    .feature-nav-text {
        font-size: 0.65rem;
    }
    
    .feature-screenshot-container {
        margin: 0 0.5rem;
    }
}

@media (max-width: 480px) {
    .feature-nav-item {
        padding: 0.5rem;
        min-width: 55px;
        /* 3个一行 */
        flex: 0 0 calc((100% - 2 * 0.5rem) / 3);
    }
    
    .feature-nav-icon {
        width: 32px;
        height: 32px;
        font-size: 0.8rem;
    }
    
    .feature-nav-text {
        font-size: 0.6rem;
    }
}

/* ========================================
   旧版轮播样式（保留兼容）
   ======================================== */

/* 轮播容器 */
.carousel-wrapper {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    z-index: 10;
    perspective: 1500px;
}

.carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-2xl);
    background: linear-gradient(145deg, rgba(15, 23, 42, 0.8), rgba(3, 0, 20, 0.9));
    border: 1px solid rgba(99, 102, 241, 0.3);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.6),
        0 0 60px -15px rgba(99, 102, 241, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: rotateX(2deg);
    transform-style: preserve-3d;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.carousel:hover {
    transform: rotateX(0deg) scale(1.02);
    box-shadow: 
        0 35px 70px -15px rgba(0, 0, 0, 0.7),
        0 0 80px -10px rgba(99, 102, 241, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

/* 轮播顶部装饰条 */
.carousel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-indigo), var(--accent-purple), var(--accent-pink));
    z-index: 10;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

/* 轮播底部反射效果 */
.carousel::after {
    content: '';
    position: absolute;
    bottom: -60%;
    left: 10%;
    right: 10%;
    height: 60%;
    background: linear-gradient(to bottom, rgba(99, 102, 241, 0.1), transparent);
    filter: blur(20px);
    transform: rotateX(180deg) scaleY(0.5);
    opacity: 0.3;
    pointer-events: none;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide {
    min-width: 100%;
    position: relative;
    cursor: pointer;
}

.carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16 / 9;
    object-fit: contain;
    background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 100%);
    transition: transform var(--transition-normal);
}

.carousel-slide:hover img {
    transform: scale(1.01);
}

/* 轮播控制按钮 */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20;
    box-shadow: 
        0 8px 20px -5px rgba(0, 0, 0, 0.5),
        0 0 15px -5px rgba(99, 102, 241, 0.3);
}

.carousel-btn:hover {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 
        0 12px 30px -5px rgba(0, 0, 0, 0.6),
        0 0 25px -5px rgba(99, 102, 241, 0.6);
}

.carousel-btn-prev {
    left: -27px;
}

.carousel-btn-next {
    right: -27px;
}

/* 轮播指示器 */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: var(--spacing-lg);
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
    transition: all var(--transition-fast);
    padding: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.2);
    border-color: rgba(99, 102, 241, 0.5);
}

.carousel-dot.active {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    border-color: transparent;
    box-shadow: 
        0 0 15px rgba(99, 102, 241, 0.6),
        0 2px 8px rgba(0, 0, 0, 0.3);
    transform: scale(1.3);
}

/* 轮播响应式 */
@media (max-width: 768px) {
    .carousel-wrapper {
        margin: 0 var(--spacing-sm);
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .carousel-btn-prev {
        left: 10px;
    }

    .carousel-btn-next {
        right: 10px;
    }

    .carousel-dot {
        width: 8px;
        height: 8px;
    }
}

/* ========================================
   图片灯箱样式
   ======================================== */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(3, 0, 20, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5), 0 0 60px rgba(99, 102, 241, 0.2);
    border: 1px solid var(--border-glass);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.lightbox.active .lightbox-content img {
    transform: scale(1);
}

/* 灯箱按钮 */
.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--accent-indigo);
    border-color: var(--accent-indigo);
    transform: scale(1.1);
}

.lightbox-close {
    top: 20px;
    right: 20px;
    font-size: 1.25rem;
}

.lightbox-prev {
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
}

.lightbox-next {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    transform: translateY(-50%) scale(1.1);
}

/* 灯箱计数器 */
.lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-glass);
}

/* 灯箱响应式 */
@media (max-width: 768px) {
    .lightbox-prev,
    .lightbox-next {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .lightbox-close {
        width: 40px;
        height: 40px;
        top: 10px;
        right: 10px;
    }
}

/* ========================================
   支付弹窗样式 - 需求 1.1, 1.2, 1.3
   ======================================== */

/* 弹窗容器 */
.payment-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.payment-modal.active {
    display: flex;
}

/* 弹窗遮罩 */
.payment-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease-out;
}

/* 弹窗主体容器 */
.payment-modal-container {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 60px rgba(99, 102, 241, 0.15);
    animation: modalSlideIn 0.3s ease-out;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 关闭按钮 */
.payment-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.payment-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

/* 弹窗内容 */
.payment-modal-content {
    padding: var(--spacing-lg);
}

/* 商品信息区域 */
.payment-product-info {
    text-align: center;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-glass);
    margin-bottom: var(--spacing-md);
}

.payment-product-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-sm);
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.payment-product-icon i {
    font-size: 1.75rem;
    color: var(--text-light);
}

.payment-product-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.payment-product-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.payment-product-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
}

.payment-price-currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-pink);
}

.payment-price-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-pink);
    line-height: 1;
}

/* 二维码展示区域 */
.payment-qrcode-section {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.payment-qrcode-wrapper {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto var(--spacing-sm);
    background: #ffffff;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.payment-qrcode-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

/* 加载状态 */
.payment-qrcode-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--bg-primary);
}

.payment-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top-color: var(--accent-indigo);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.payment-qrcode-loading p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* 二维码过期遮罩 */
.payment-qrcode-expired {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: var(--text-primary);
}

.payment-qrcode-expired i {
    font-size: 2rem;
    color: var(--accent-pink);
}

.payment-qrcode-expired p {
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
}

.payment-refresh-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--accent-indigo);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.payment-refresh-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.payment-qrcode-tip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.payment-qrcode-tip i {
    color: #07c160;
    font-size: 1rem;
}

/* 订单信息区域 */
.payment-order-info {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.payment-order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
}

.payment-order-row:not(:last-child) {
    border-bottom: 1px dashed var(--border-glass);
}

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

.payment-order-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-family: 'Consolas', 'Monaco', monospace;
}

.payment-countdown {
    color: var(--accent-pink);
    font-weight: 600;
}

/* 错误提示区域 */
.payment-error {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.payment-error i {
    color: #ef4444;
    font-size: 1.25rem;
}

.payment-error span {
    flex: 1;
    font-size: 0.875rem;
    color: #fca5a5;
}

.payment-retry-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: #fca5a5;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.payment-retry-btn:hover {
    background: rgba(239, 68, 68, 0.3);
}

/* 支付说明 */
.payment-notice {
    text-align: center;
}

.payment-notice p {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.payment-notice i {
    color: var(--accent-cyan);
}

/* 响应式适配 */
@media (max-width: 480px) {
    .payment-modal-container {
        max-width: 100%;
        margin: var(--spacing-sm);
        border-radius: var(--radius-lg);
    }
    
    .payment-modal-content {
        padding: var(--spacing-md);
    }
    
    .payment-product-icon {
        width: 56px;
        height: 56px;
    }
    
    .payment-product-icon i {
        font-size: 1.5rem;
    }
    
    .payment-product-name {
        font-size: 1.25rem;
    }
    
    .payment-price-amount {
        font-size: 2rem;
    }
    
    .payment-qrcode-wrapper {
        width: 180px;
        height: 180px;
    }
}


/* ========================================
   邀请横幅样式 - 需求 6.1, 6.2
   ======================================== */
.referral-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-purple));
    padding: 0;
    transform: translateY(-100%);
    opacity: 0;
    transition: all 0.3s ease;
}

.referral-banner.show {
    transform: translateY(0);
    opacity: 1;
}

.referral-banner.hide {
    transform: translateY(-100%);
    opacity: 0;
}

.referral-banner-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
}

.referral-banner-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    flex-shrink: 0;
}

.referral-banner-icon i {
    font-size: 0.875rem;
    color: var(--text-light);
    animation: giftPulse 2s ease-in-out infinite;
}

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

.referral-banner-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-light);
    text-align: center;
}

.referral-banner-close {
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: var(--text-light);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.referral-banner-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.referral-banner-close i {
    font-size: 0.75rem;
}

/* 当邀请横幅显示时，调整 header 位置 */
body:has(.referral-banner.show) .header {
    top: 44px;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .referral-banner-content {
        padding: var(--spacing-xs) var(--spacing-sm);
        padding-right: 40px;
    }
    
    .referral-banner-text {
        font-size: 0.8125rem;
    }
    
    .referral-banner-icon {
        width: 24px;
        height: 24px;
    }
    
    .referral-banner-icon i {
        font-size: 0.75rem;
    }
    
    body:has(.referral-banner.show) .header {
        top: 40px;
    }
}

@media (max-width: 480px) {
    .referral-banner-text {
        font-size: 0.75rem;
    }
    
    .referral-banner-content {
        gap: var(--spacing-xs);
    }
}