/* 基础样式 */
:root {
    /* 主色调 */
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    /* 中性色 */
    --dark-color: #0f172a;
    --dark-secondary: #1e293b;
    --gray-900: #0f172a;
    --gray-800: #1e293b;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-500: #64748b;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #ffffff;

    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-text: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    /* 阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* 边框半径 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* 字体 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 通用样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* 文本样式 */
.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 30%, #ddd6fe 60%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: var(--font-size-base);
    line-height: 1.5;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

.btn-outline-primary {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-outline-primary:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: var(--font-size-lg);
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--gray-800);
}

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

.brand-info {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-weight: 700;
    font-size: var(--font-size-xl);
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.brand-tagline {
    font-size: var(--font-size-xs);
    color: var(--gray-600);
    font-weight: 500;
}

.navbar-toggler {
    border: none;
    padding: 8px;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 44px;
    height: 44px;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.navbar-toggler:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.05);
}

.navbar-toggler span {
    display: block;
    height: 2px;
    width: 20px;
    background: var(--primary-color);
    transition: all 0.3s ease;
    border-radius: 1px;
}

.navbar-toggler[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggler[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: translateX(20px);
}

.navbar-toggler[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    outline: none;
}

.navbar-nav {
    gap: var(--spacing-md);
}

.nav-link {
    font-weight: 500;
    color: var(--gray-700);
    text-decoration: none;
    padding: 0.5rem 0;
    position: relative;
    transition: all 0.3s ease;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

/* 导航链接选中状态 - 只显示底部横线，不显示方框 */
.nav-link.active {
    color: var(--primary-color);
}

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

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

/* 导航栏中的outline按钮样式 */
.navbar .btn-outline-primary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    backdrop-filter: none;
}

.navbar .btn-outline-primary:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* 移动端下拉菜单优化 */
.navbar-collapse {
    /* background: linear-gradient(145deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.95)); */
    /* backdrop-filter: blur(20px);
    border-radius: 0 0 24px 24px;
    margin: 0 -15px;
    padding: 24px 20px;
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.08),
        0 4px 20px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border-top: 1px solid rgba(102, 126, 234, 0.1);
    animation: slideDown 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    position: relative; */
}

.navbar-collapse::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    border-radius: 0 0 2px 2px;
}

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

.navbar-collapse.collapsing {
    transition: height 0.3s ease-out;
}

@media (max-width: 991.98px) {
    .navbar-nav {
        margin-top: var(--spacing-sm);
        gap: 0;
        padding: 0;
    }

    .nav-item {
        margin: 0;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

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

    .nav-link {
        padding: 15px 20px;
        font-size: var(--font-size-base);
        font-weight: 500;
        color: var(--gray-700);
        border-radius: 12px;
        margin: 4px 0;
        transition: all 0.3s ease;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .nav-link:hover {
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(59, 130, 246, 0.08));
        color: var(--primary-color);
        transform: translateX(8px);
    }

    .nav-link::after {
        display: none;
    }

    .nav-link::before {
        content: '';
        position: absolute;
        left: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 0;
        height: 20px;
        background: var(--gradient-primary);
        border-radius: 0 10px 10px 0;
        transition: width 0.3s ease;
    }

    .nav-link:hover::before {
        width: 4px;
    }

    .navbar-actions {
        margin-top: var(--spacing-lg);
        padding-top: var(--spacing-md);
        border-top: 1px solid rgba(0, 0, 0, 0.08);
        justify-content: center;
        gap: var(--spacing-sm);
        flex-direction: column;
    }

    .navbar-actions .btn {
        width: 100%;
        max-width: 280px;
        padding: 12px 24px;
        font-weight: 600;
        border-radius: 12px;
        transition: all 0.3s ease;
    }

    .navbar-actions .btn-outline-primary {
        background: rgba(102, 126, 234, 0.05);
        border: 2px solid rgba(102, 126, 234, 0.2);
        color: var(--primary-color);
    }

    .navbar-actions .btn-outline-primary:hover {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: white;
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    }

    .navbar-actions .btn-warning {
        background: linear-gradient(135deg, #f59e0b, #d97706);
        border: none;
        color: white;
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
    }

    .navbar-actions .btn-warning:hover {
        background: linear-gradient(135deg, #d97706, #b45309);
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(245, 158, 11, 0.4);
    }

    /* 为移动端菜单项添加图标样式 */
    .nav-link[href="#home"]::after {
        content: "🏠";
        font-size: 16px;
        opacity: 0.6;
    }

    .nav-link[href="#demo"]::after {
        content: "🎬";
        font-size: 16px;
        opacity: 0.6;
    }

    .nav-link[href*="free-download"]::after {
        content: "⬇️";
        font-size: 16px;
        opacity: 0.6;
    }

    .nav-link[href="#pricing"]::after {
        content: "💳";
        font-size: 16px;
        opacity: 0.6;
    }

    .nav-link:hover::after {
        opacity: 1;
        transform: scale(1.1);
        transition: all 0.3s ease;
    }
}

/* Hero区域 */
.hero-section {
    position: relative;
    height: calc(100vh); /* 减去导航栏高度 */
    min-height: calc(100vh - 36px);
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        rgba(20, 94, 213, 0.1) 0%,
        rgba(9, 91, 207, 0.5) 25%,
        rgba(79, 70, 229, 0.7) 50%,
        rgba(147, 51, 234, 0.8) 75%,
        rgba(168, 85, 247, 0.9) 100%);
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.4) 0%, transparent 60%),
        radial-gradient(circle at 80% 20%, rgba(147, 51, 234, 0.3) 0%, transparent 60%),
        radial-gradient(circle at 40% 40%, rgba(168, 85, 247, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 60% 70%, rgba(59, 130, 246, 0.2) 0%, transparent 40%);
    animation: float 20s ease-in-out infinite;
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    animation: float 15s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 60%;
    right: 10%;
    animation-delay: 5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 60%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(20px) rotate(240deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.hero-badge i {
    color: rgba(255, 255, 255, 0.9);
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

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

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-lg);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-item i {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
}

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

.hero-trust {
    margin-top: var(--spacing-xl);
}

.trust-text {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-sm);
}

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

.trust-item {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-700);
}

@media (max-width: 767.98px) {
    .hero-section {
        padding: 30px 0 40px;
        text-align: center;
        height: auto;
        min-height: auto;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-description {
        font-size: var(--font-size-lg);
    }

    .hero-features {
        justify-content: center;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .feature-item {
        width: auto;
        flex: 1;
        min-width: 120px;
        max-width: 200px;
        padding: 0.5rem 0.75rem;
        font-size: var(--font-size-sm);
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .hero-actions .btn {
        width: auto;
        flex: 1;
        min-width: 140px;
        max-width: 240px;
        padding: 0.75rem 1rem;
        font-size: var(--font-size-sm);
        text-align: center;
        justify-content: center;
        display: flex;
        align-items: center;
    }

    /* 隐藏右侧图片区域 */
    .hero-visual {
        display: none !important;
    }

    /* 确保左侧内容占满整个宽度 */
    .hero-section .col-lg-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* Hero视觉区域 */
.hero-visual {
    position: relative;
    z-index: 2;
}

.video-showcase {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.main-video-container {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.video-frame {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    background: var(--white);
    padding: 1rem;
}

.video-content {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.video-content:hover {
    transform: scale(1.02);
}

.video-thumbnail {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-xl);
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    opacity: 1;
    transition: opacity 0.3s ease;
}

.video-content:hover .play-overlay {
    opacity: 1;
}

.play-button {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4f46e5;
    font-size: 2.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3), 0 0 0 3px rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.play-button:hover {
    transform: scale(1.15);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 0 0 0 4px rgba(255, 255, 255, 0.5);
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
}

.play-text {
    margin-top: var(--spacing-sm);
    color: var(--white);
    font-weight: 600;
    font-size: var(--font-size-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    background: rgba(0, 0, 0, 0.3);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
}

.floating-features {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.feature-bubble {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    font-weight: 600;
    color: var(--gray-800);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    animation: float 6s ease-in-out infinite;
}

.feature-bubble i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

.bubble-1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.bubble-2 {
    top: 20%;
    right: -15%;
    animation-delay: 1.5s;
}

.bubble-3 {
    bottom: 30%;
    left: -5%;
    animation-delay: 3s;
}

.bubble-4 {
    bottom: 10%;
    right: -10%;
    animation-delay: 4.5s;
}

@media (max-width: 767.98px) {
    .floating-features {
        display: none;
    }

    .video-frame {
        padding: 0.5rem;
    }

    .play-button {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* 通用板块样式 */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: var(--radius-2xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--gray-900);
}

.section-description {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 功能特点板块 - 六边形矩阵设计 */
.features-section {
    padding: var(--spacing-2xl) 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.1) 0%, transparent 50%),
        linear-gradient(135deg, rgba(248, 250, 252, 0.9) 0%, rgba(241, 245, 249, 0.9) 100%);
    position: relative;
    overflow: hidden;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 25% 25%, rgba(102, 126, 234, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 107, 107, 0.05) 0%, transparent 50%);
    animation: backgroundFloat 20s ease-in-out infinite;
}

@keyframes backgroundFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.features-matrix {
    position: relative;
    margin-top: var(--spacing-2xl);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
}

.connections-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.features-hexagon-grid {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: -30px;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transform-origin: center center;
}

/* 悬停时网格向左平移 */
.features-matrix:hover .features-hexagon-grid {
    transform: translateX(-200px);
}

/* 优化GPU加速 */
.features-hexagon-grid,
.feature-details-panel {
    will-change: transform, opacity;
    backface-visibility: hidden;
    perspective: 1000px;
}

.hex-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.hex-row.row-2 {
    margin: 0 -60px;
}

.feature-hex {
    width: 200px;
    height: 200px;
    position: relative;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feature-hex:hover {
    transform: scale(1.1) translateY(-10px);
    z-index: 10;
}

.hex-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform: rotate(30deg);
}

.hex-inner::before,
.hex-inner::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    transition: all 0.4s ease;
}

.hex-inner::before {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.hex-inner::after {
    background: linear-gradient(135deg, transparent 0%, rgba(102, 126, 234, 0.1) 100%);
    opacity: 0;
    transform: scale(0.8);
}

.feature-hex:hover .hex-inner::after {
    opacity: 1;
    transform: scale(1);
}

.hex-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-30deg);
    text-align: center;
    padding: 20px;
    width: 160px;
    height: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.feature-icon-hex {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-icon-hex::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(255, 107, 107, 0.8) 100%);
    transition: all 0.3s ease;
}

.feature-icon-hex i {
    position: relative;
    z-index: 2;
    color: white;
}

.feature-hex:hover .feature-icon-hex {
    transform: scale(1.2) rotate(360deg);
}

.hex-content h3 {
    font-size: 14px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
    line-height: 1.2;
}

.hex-content p {
    font-size: 11px;
    color: var(--gray-600);
    line-height: 1.3;
    margin-bottom: 8px;
}

.feature-badge-hex {
    position: absolute;
    top: -5px;
    right: -5px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: white;
    transform: rotate(30deg);
}

/* 徽章颜色主题 */
.feature-badge-hex.core {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.feature-badge-hex.hot {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.feature-badge-hex.pro {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.feature-badge-hex.advanced {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.feature-badge-hex.efficiency {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.feature-badge-hex.collab {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    color: var(--gray-700);
}

.feature-badge-hex.ai {
    background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%);
    color: var(--gray-700);
}

/* 中心六边形特殊样式 */
.center-hex {
    transform: scale(1.2);
    z-index: 5;
}

.center-hex .hex-inner::before {
    background: linear-gradient(135deg,
        rgba(102, 126, 234, 0.95) 0%,
        rgba(255, 107, 107, 0.95) 100%);
    border: 3px solid rgba(255, 255, 255, 0.5);
    box-shadow:
        0 15px 45px rgba(102, 126, 234, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.center-hex .hex-content {
    color: white;
}

.center-hex .hex-content h3,
.center-hex .hex-content p {
    color: white;
}

.center-hex .feature-icon-hex.central::before {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.1) 100%);
}

.center-hex:hover {
    transform: scale(1.3) translateY(-15px);
}

/* 详情面板 */
.feature-details-panel {
    position: absolute;
    top: 50%;
    right: -420px;
    transform: translateY(-50%);
    width: 380px;
    max-height: 600px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
}

.feature-details-panel.active {
    right: 20px;
    opacity: 1;
    pointer-events: auto;
}

.details-content {
    padding: 30px;
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

.close-details {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 30px;
    height: 30px;
    border: none;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--gray-600);
}

.close-details:hover {
    background: rgba(0, 0, 0, 0.2);
    transform: scale(1.1);
}

.details-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.details-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.details-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.details-description {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 20px;
}

.details-highlights {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.details-highlights .highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: rgba(102, 126, 234, 0.05);
    border-radius: 10px;
    font-size: var(--font-size-sm);
    color: var(--gray-700);
}

.details-highlights .highlight-item i {
    color: var(--success-color);
    font-size: var(--font-size-base);
}

/* 视频播放按钮样式 */
.video-action {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.btn-play-video {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #667eea 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-play-video:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #667eea 0%, var(--primary-color) 100%);
}

.btn-play-video:active {
    transform: translateY(0);
}

.btn-play-video i {
    font-size: 18px;
}

/* 视频播放器模态框样式 */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.video-modal.active {
    opacity: 1;
    visibility: visible;
}

.video-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.video-modal-content {
    position: relative;
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s ease;
}

.video-modal.active .video-modal-content {
    transform: scale(1) translateY(0);
}

.video-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 25px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.video-modal-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 0;
}

.video-modal-close {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--gray-600);
}

.video-modal-close:hover {
    background: rgba(0, 0, 0, 0.2);
    color: var(--gray-900);
    transform: scale(1.1);
}

.video-modal-body {
    padding: 0;
}

.video-modal .video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
}

.video-modal video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 视频模态框响应式设计 */
@media (max-width: 767.98px) {
    .video-modal-content {
        width: 95%;
        max-height: 85vh;
        border-radius: 15px;
    }

    .video-modal-header {
        padding: 15px 20px;
    }

    .video-modal-title {
        font-size: 16px;
    }

    .video-modal-close {
        width: 35px;
        height: 35px;
    }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .features-matrix:hover .features-hexagon-grid {
        transform: translateX(-150px);
    }

    .feature-details-panel.active {
        right: 15px;
        width: 350px;
    }
}

@media (max-width: 767.98px) {
    .features-section {
        padding: var(--spacing-xl) 0;
    }

    /* 移动设备上禁用悬停平移效果 */
    .features-matrix:hover .features-hexagon-grid {
        transform: none;
    }

    .features-hexagon-grid {
        gap: -20px;
    }

    .hex-row {
        gap: 10px;
    }

    .hex-row.row-2 {
        margin: 0 -40px;
    }

    .feature-hex {
        width: 150px;
        height: 150px;
    }

    .hex-content {
        width: 120px;
        height: 120px;
        padding: 15px;
    }

    .hex-content h3 {
        font-size: 12px;
    }

    .hex-content p {
        font-size: 10px;
    }

    .feature-icon-hex {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .center-hex {
        transform: scale(1.1);
    }

    .center-hex:hover {
        transform: scale(1.2) translateY(-10px);
    }

    /* 移动设备上详情面板从底部滑入 */
    .feature-details-panel {
        position: fixed;
        top: auto;
        bottom: -100%;
        right: 0;
        left: 0;
        width: 100%;
        height: 70vh;
        border-radius: 20px 20px 0 0;
        transform: none;
        opacity: 1;
    }

    .feature-details-panel.active {
        bottom: 0;
        right: 0;
    }
}

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .section-description {
        font-size: var(--font-size-lg);
    }
}

/* 六边形脉冲动画 */
@keyframes hexPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 12px 40px rgba(102, 126, 234, 0.2);
    }
}

.feature-hex:nth-child(odd) .hex-inner::before {
    animation: hexPulse 4s ease-in-out infinite;
}

.feature-hex:nth-child(even) .hex-inner::before {
    animation: hexPulse 4s ease-in-out infinite reverse;
}

/* 图标旋转动画 */
@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-5px) rotate(5deg);
    }
}

.feature-icon-hex {
    animation: iconFloat 3s ease-in-out infinite;
}

.feature-hex:nth-child(even) .feature-icon-hex {
    animation-delay: 1.5s;
}

/* 徽章闪烁效果 */
@keyframes badgeGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
    }
    50% {
        box-shadow: 0 0 15px rgba(255, 255, 255, 0.8), 0 0 25px rgba(102, 126, 234, 0.3);
    }
}

.feature-badge-hex {
    animation: badgeGlow 2s ease-in-out infinite;
}

/* 中心六边形特殊动画 */
@keyframes centerPulse {
    0%, 100% {
        transform: scale(1.2);
        box-shadow:
            0 15px 45px rgba(102, 126, 234, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.7);
    }
    50% {
        transform: scale(1.25);
        box-shadow:
            0 20px 60px rgba(102, 126, 234, 0.4),
            0 0 30px rgba(255, 107, 107, 0.3),
            inset 0 1px 0 rgba(255, 255, 255, 0.8);
    }
}

.center-hex .hex-inner::before {
    animation: centerPulse 3s ease-in-out infinite;
}

/* 连接线动画增强 */
.connections-canvas {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.features-matrix:hover .connections-canvas {
    opacity: 1;
}

/* 悬停时的特殊效果 */
.feature-hex:hover .hex-inner::before {
    animation-play-state: paused;
    transform: scale(1.05);
    box-shadow:
        0 20px 60px rgba(102, 126, 234, 0.3),
        0 0 30px rgba(255, 107, 107, 0.2),
        inset 0 2px 0 rgba(255, 255, 255, 0.8);
}

.feature-hex:hover .feature-icon-hex {
    animation-play-state: paused;
}

.feature-hex:hover .feature-badge-hex {
    animation-play-state: paused;
    box-shadow: 0 0 20px rgba(255, 255, 255, 1), 0 0 30px rgba(102, 126, 234, 0.5);
}

/* 响应式动画调整 */
@media (max-width: 767.98px) {
    .feature-hex .hex-inner::before {
        animation-duration: 6s;
    }

    .feature-icon-hex {
        animation-duration: 4s;
    }

    .feature-badge-hex {
        animation-duration: 3s;
    }
}

/* 减少动画对性能的影响 */
@media (prefers-reduced-motion: reduce) {
    .feature-hex .hex-inner::before,
    .feature-icon-hex,
    .feature-badge-hex,
    .center-hex .hex-inner::before {
        animation: none;
    }

    .connections-canvas {
        display: none;
    }
}

/* 重新设计的视频演示板块 */
.demo-section {
    padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
    background: linear-gradient(135deg,
        rgba(248, 250, 252, 0.8) 0%,
        rgba(241, 245, 249, 0.9) 50%,
        rgba(248, 250, 252, 0.8) 100%);
    position: relative;
    overflow-x: hidden;
    overflow-y: visible;
}

/* 背景装饰元素 */
.demo-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.demo-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    animation: float 6s ease-in-out infinite;
}

.demo-orb-1 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.demo-orb-2 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #f093fb, #f5576c);
    top: 60%;
    right: -5%;
    animation-delay: 2s;
}

.demo-orb-3 {
    width: 150px;
    height: 150px;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

.demo-floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.demo-shape {
    position: absolute;
    opacity: 0.1;
    animation: rotate 20s linear infinite;
}

.demo-shape-1 {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 12px;
    top: 20%;
    right: 15%;
    animation-delay: 0s;
}

.demo-shape-2 {
    width: 40px;
    height: 40px;
    background: var(--secondary-color);
    border-radius: 50%;
    bottom: 30%;
    right: 25%;
    animation-delay: 5s;
}

.demo-shape-3 {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    top: 70%;
    left: 10%;
    animation-delay: 10s;
}

/* 标题区域样式 */
.demo-hero-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

.demo-badge-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-lg);
}

.demo-badge-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.3) 0%, transparent 70%);
    border-radius: 50px;
    animation: pulse 3s ease-in-out infinite;
}

.demo-badge-modern {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(248, 250, 252, 0.8) 100%);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 50px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.1);
    overflow: hidden;
}

.demo-badge-icon {
    font-size: 1.2rem;
    color: var(--primary-color);
    animation: bounce 2s ease-in-out infinite;
}

.demo-badge-text {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-700);
    letter-spacing: 0.5px;
    text-decoration: none !important;
    transition: color 0.3s ease;
}

.demo-badge-text:hover {
    color: var(--primary-color);
    text-decoration: none !important;
}

.demo-badge-text:focus,
.demo-badge-text:active,
.demo-badge-text:visited {
    text-decoration: none !important;
    color: var(--gray-700);
}

.demo-badge-pulse {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(102, 126, 234, 0.2) 50%,
        transparent 100%);
    animation: shimmer 3s ease-in-out infinite;
}

.demo-hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.demo-title-line-1 {
    color: var(--gray-800);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.2s forwards;
}

.demo-title-line-2 {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.demo-title-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.4s forwards;
}

.demo-title-highlight {
    position: relative;
    color: var(--gray-800);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.6s forwards;
}

.demo-title-highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transform: scaleX(0);
    animation: scaleX 0.8s ease-out 1s forwards;
}

.demo-title-line-3 {
    color: var(--gray-800);
    opacity: 0;
    animation: slideInUp 0.8s ease-out 0.8s forwards;
}

.demo-hero-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    opacity: 0;
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

/* 现代统计数据样式 */
.demo-stats-modern {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
    flex-wrap: wrap;
}

.demo-stat-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(248, 250, 252, 0.8) 100%);
    border: 1px solid rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    overflow: hidden;
}

.demo-stat-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.3);
}

.demo-stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.demo-stat-content {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.demo-stat-number {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.demo-stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

.demo-stat-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.demo-stat-card:hover .demo-stat-glow {
    opacity: 1;
}

/* 网格布局 */
.demo-grid-modern {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
    position: relative;
    z-index: 1;
}

/* 主要特色视频卡片 */
.demo-card-hero {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(248, 250, 252, 0.9) 100%);
    border-radius: var(--radius-3xl);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: all 0.5s ease;
    position: relative;
    backdrop-filter: blur(10px);
}

.demo-card-hero:hover {
    transform: translateY(-12px);
    box-shadow: 0 30px 80px rgba(102, 126, 234, 0.2);
    border-color: rgba(102, 126, 234, 0.3);
}

.demo-card-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.demo-card-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        rgba(102, 126, 234, 0.05) 0%,
        rgba(245, 87, 108, 0.05) 50%,
        rgba(79, 172, 254, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.demo-card-hero:hover .demo-card-gradient {
    opacity: 1;
}

.demo-card-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                      radial-gradient(circle at 80% 80%, rgba(245, 87, 108, 0.1) 0%, transparent 50%);
    opacity: 0.5;
}

.demo-card-content {
    padding: var(--spacing-2xl);
    position: relative;
    z-index: 2;
}

.demo-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.demo-card-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.demo-badge-featured {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(255, 107, 107, 0.3);
}

.demo-badge-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%);
    animation: shine 2s ease-in-out infinite;
}

.demo-card-category {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.demo-card-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.demo-card-description {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-md);
}

.demo-card-features {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.demo-feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(135deg,
        rgba(102, 126, 234, 0.1) 0%,
        rgba(79, 172, 254, 0.1) 100%);
    color: var(--primary-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: 1px solid rgba(102, 126, 234, 0.2);
    transition: all 0.3s ease;
}

.demo-feature-item:hover {
    background: linear-gradient(135deg,
        rgba(102, 126, 234, 0.2) 0%,
        rgba(79, 172, 254, 0.2) 100%);
    transform: translateY(-2px);
}

.demo-card-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.demo-stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

.demo-stat-item i {
    color: var(--primary-color);
}

.demo-card-video {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.demo-video-container {
    position: relative;
    cursor: pointer;
    overflow: hidden;
    border-radius: var(--radius-2xl);
}

.demo-video-thumbnail {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.demo-video-container:hover .demo-video-thumbnail {
    transform: scale(1.05);
}

.demo-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.5) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.demo-video-container:hover .demo-video-overlay {
    opacity: 1;
}

.demo-play-button {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(248, 250, 252, 0.8) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.demo-play-button:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.demo-play-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-left: 4px;
}

.demo-play-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border: 2px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: ripple 2s ease-out infinite;
}

.demo-video-info {
    position: absolute;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
}

.demo-video-duration,
.demo-video-quality {
    padding: 0.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.7);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.demo-video-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.demo-card-hero:hover .demo-video-glow {
    opacity: 0.3;
}

/* 紧凑型视频卡片网格 - 默认3列2行布局 */
.demo-cards-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    grid-template-rows: repeat(2, 1fr) !important;
    gap: var(--spacing-xl) !important;
    margin-top: var(--spacing-2xl) !important;
    max-width: 1200px !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

/* 大屏幕 - 3列布局 */
@media (min-width: 992px) {
    .demo-cards-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        grid-template-rows: repeat(2, 1fr) !important;
        gap: var(--spacing-xl) !important;
    }
}

/* 超大屏幕 - 强制3列布局 */
@media (min-width: 1200px) {
    .demo-cards-grid.d-md-block {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        grid-template-rows: repeat(2, 1fr) !important;
        gap: var(--spacing-xl) !important;
        max-width: 1200px !important;
        margin: var(--spacing-2xl) auto 0 auto !important;
    }
}

/* 针对所有大屏幕的强制规则 */
@media (min-width: 768px) {
    .demo-cards-grid.d-md-block {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        grid-template-rows: repeat(2, 1fr) !important;
    }
}



.demo-card-compact {
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(248, 250, 252, 0.8) 100%);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    position: relative;
}

.demo-card-compact:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.2);
}

.demo-compact-video {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.demo-compact-video .demo-video-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.demo-card-compact:hover .demo-video-thumbnail {
    transform: scale(1.05);
}

.demo-compact-video .demo-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.demo-card-compact:hover .demo-video-overlay {
    opacity: 1;
}

.demo-play-button-small {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg,
        rgba(255, 255, 255, 0.9) 0%,
        rgba(248, 250, 252, 0.8) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.demo-play-button-small:hover {
    transform: scale(1.1);
}

.demo-video-duration-badge {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 0.25rem 0.5rem;
    background: rgba(0, 0, 0, 0.7);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.demo-compact-content {
    padding: var(--spacing-lg);
}

.demo-compact-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.demo-compact-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.demo-badge-recommend {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    color: var(--white);
}

.demo-badge-new {
    background: linear-gradient(135deg, #a8edea, #fed6e3);
    color: var(--gray-800);
}

.demo-badge-tutorial {
    background: linear-gradient(135deg, #ffecd2, #fcb69f);
    color: var(--gray-800);
}

.demo-badge-advanced {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: var(--white);
}

.demo-badge-efficient {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: var(--white);
}

.demo-badge-expert {
    background: linear-gradient(135deg, #ffd700, #ff8c00);
    color: var(--gray-800);
}

.demo-compact-category {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: rgba(102, 126, 234, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1rem;
}

.demo-compact-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.demo-compact-description {
    color: var(--gray-600);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.demo-compact-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.demo-tag {
    padding: 0.25rem 0.5rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    border: 1px solid rgba(102, 126, 234, 0.2);
    transition: all 0.3s ease;
}

.demo-tag:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-1px);
}

.demo-compact-stats {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.demo-compact-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: var(--font-size-xs);
    color: var(--gray-500);
    font-weight: 500;
}

.demo-compact-stat i {
    color: var(--primary-color);
}

/* 查看更多部分 */
.demo-more-section {
    margin-top: 0;
    text-align: center;
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg,
        rgba(102, 126, 234, 0.05) 0%,
        rgba(79, 172, 254, 0.05) 100%);
    border-radius: var(--radius-3xl);
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.demo-more-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(79, 172, 254, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

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

.demo-more-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.demo-more-description {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.demo-more-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.demo-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.demo-btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.demo-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
    color: var(--white);
}

.demo-btn-secondary {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.demo-btn-secondary:hover {
    background: rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
    color: var(--primary-color);
}

.demo-btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%);
    animation: shimmer 3s ease-in-out infinite;
}

/* 动画效果 */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.1); opacity: 1; }
}

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

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 100%; }
}

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleX {
    0% { transform: scaleX(0); }
    100% { transform: scaleX(1); }
}

@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

/* 旧样式已被新设计替换 */

/* 响应式设计 */
/* 平板屏幕 - 2列布局 */
@media (max-width: 991.98px) and (min-width: 768px) {
    .demo-cards-grid.d-md-block {
        grid-template-columns: repeat(2, 1fr) !important;
        grid-template-rows: repeat(3, 1fr) !important;
        gap: var(--spacing-lg) !important;
    }
}

/* 中等屏幕以下继续其他样式 */
@media (max-width: 991.98px) {

    .demo-card-content {
        padding: var(--spacing-xl);
    }

    .demo-section {
        padding: var(--spacing-lg) 0 var(--spacing-md) 0;
    }

    .demo-hero-title {
        font-size: clamp(2rem, 4vw, 3rem);
    }

    .demo-stats-modern {
        gap: var(--spacing-lg);
    }

    .demo-stat-card {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .demo-card-features {
        gap: var(--spacing-sm);
    }

    .demo-card-stats {
        gap: var(--spacing-md);
    }
}

@media (max-width: 767.98px) {
    .demo-section {
        padding: var(--spacing-md) 0 var(--spacing-sm) 0;
    }

    .demo-orb-1,
    .demo-orb-2,
    .demo-orb-3 {
        display: none;
    }

    .demo-hero-header {
        margin-bottom: var(--spacing-md);
    }

    .demo-hero-title {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
        gap: 0.25rem;
    }

    .demo-title-line-2 {
        flex-direction: column;
        gap: 0.25rem;
    }

    .demo-hero-description {
        font-size: var(--font-size-md);
        margin-bottom: var(--spacing-md);
    }

    .demo-stats-modern {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .demo-stat-card {
        width: 100%;
        max-width: 280px;
        justify-content: center;
        padding: var(--spacing-md);
    }



    /* 移动端轮播样式 */
    .demo-carousel-container {
        position: relative;
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-md);
        padding-bottom: var(--spacing-xs);
    }

    .demo-carousel-wrapper {
        position: relative;
        overflow: visible;
        padding: 0 20px;
        height: auto;
        min-height: auto;
    }

    .demo-carousel-track {
        display: flex;
        transition: transform 0.3s ease-in-out;
        gap: 15px;
        padding: 10px 5px 20px 5px;
    }

    .demo-carousel-slide {
        flex: 0 0 calc(100vw - 60px);
        max-width: 300px;
        min-width: 280px;
    }

    .demo-carousel-slide .demo-card-compact {
        width: 100%;
        margin: 0;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
        border-radius: var(--radius-xl);
        overflow: hidden;
        background: white;
        height: auto;
        min-height: 380px;
        display: flex;
        flex-direction: column;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .demo-carousel-slide .demo-card-compact:hover {
        transform: translateY(-4px);
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15), 0 4px 12px rgba(0, 0, 0, 0.1);
    }

    /* 轮播指示器 */
    .demo-carousel-indicators {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: var(--spacing-md);
        padding: 0 20px;
    }

    .demo-indicator {
        width: 10px;
        height: 10px;
        border-radius: 50%;
        border: none;
        background: rgba(102, 126, 234, 0.4);
        cursor: pointer;
        transition: all 0.3s ease;
        padding: 0;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    .demo-indicator.active {
        background: var(--primary-color);
        transform: scale(1.3);
        box-shadow: 0 2px 8px rgba(102, 126, 234, 0.4);
    }

    .demo-indicator:hover {
        background: rgba(102, 126, 234, 0.6);
    }

    /* 确保轮播卡片内容正确显示 */
    .demo-carousel-slide .demo-compact-content {
        padding: var(--spacing-lg);
        display: flex;
        flex-direction: column;
        height: auto;
        flex: 1;
        justify-content: flex-start;
    }

    .demo-carousel-slide .demo-compact-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: var(--spacing-sm);
    }

    .demo-carousel-slide .demo-compact-title {
        font-size: var(--font-size-lg);
        font-weight: 600;
        margin-bottom: var(--spacing-sm);
        color: var(--gray-800);
        line-height: 1.3;
    }

    .demo-carousel-slide .demo-compact-description {
        font-size: var(--font-size-sm);
        color: var(--gray-600);
        line-height: 1.4;
        margin-bottom: var(--spacing-sm);
        overflow: hidden;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical;
    }

    .demo-carousel-slide .demo-compact-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 0.4rem;
        margin-top: auto;
        padding-top: var(--spacing-sm);
    }

    .demo-carousel-slide .demo-compact-tag {
        background: rgba(102, 126, 234, 0.1);
        color: var(--primary-color);
        padding: 0.25rem 0.5rem;
        border-radius: var(--radius-sm);
        font-size: var(--font-size-xs);
        font-weight: 500;
    }

    /* 轮播中的视频区域 */
    .demo-carousel-slide .demo-compact-video {
        height: 160px;
        overflow: hidden;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        flex-shrink: 0;
    }
}

/* 超小屏幕优化 */
@media (max-width: 575.98px) {
    .demo-section {
        padding: var(--spacing-sm) 0 var(--spacing-xs) 0;
    }

    .demo-hero-header {
        margin-bottom: var(--spacing-sm);
    }

    .demo-hero-description {
        margin-bottom: var(--spacing-sm);
    }

    .demo-carousel-container {
        margin-top: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
        padding-bottom: var(--spacing-xs);
    }

    .demo-carousel-slide {
        flex: 0 0 calc(100vw - 40px);
        max-width: 280px;
        min-width: 260px;
    }

    .demo-carousel-slide .demo-card-compact {
        min-height: 360px;
        height: auto;
    }

    .demo-carousel-wrapper {
        padding: 0 15px;
        overflow: visible;
    }

    .demo-carousel-track {
        gap: 12px;
        padding: 8px 3px 16px 3px;
    }

    .demo-carousel-slide .demo-compact-content {
        padding: var(--spacing-md);
    }

    .demo-carousel-slide .demo-compact-video {
        height: 160px;
    }
}

/* 极小屏幕优化 (480px以下) */
@media (max-width: 479.98px) {
    .demo-carousel-slide .demo-card-compact {
        min-height: 380px;
    }

    .demo-carousel-slide .demo-compact-video {
        height: 180px;
    }

    .demo-carousel-slide .demo-compact-content {
        padding: var(--spacing-sm);
        min-height: 200px;
    }

    .demo-carousel-slide .demo-compact-title {
        font-size: var(--font-size-sm);
        line-height: 1.4;
    }

    .demo-carousel-slide .demo-compact-description {
        font-size: var(--font-size-xs);
        line-height: 1.4;
        -webkit-line-clamp: 2;
    }

    .demo-carousel-container {
        margin-bottom: var(--spacing-sm);
        padding-bottom: var(--spacing-xs);
    }

    .demo-carousel-indicators {
        margin-top: var(--spacing-sm);
        padding: 0 15px;
    }

    .demo-indicator {
        width: 8px;
        height: 8px;
    }
}

    .demo-card-content {
        padding: var(--spacing-lg);
    }

    .demo-card-title {
        font-size: var(--font-size-xl);
    }

    .demo-card-features {
        gap: var(--spacing-xs);
    }

    .demo-feature-item {
        font-size: var(--font-size-xs);
        padding: 0.25rem 0.5rem;
    }

    .demo-card-stats {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }

    .demo-video-thumbnail {
        height: 250px;
    }

    .demo-compact-video {
        height: 180px;
    }

    .demo-compact-content {
        padding: var(--spacing-md);
    }

    .demo-compact-title {
        font-size: var(--font-size-md);
    }

    .demo-compact-tags {
        gap: 0.25rem;
    }

    .demo-more-section {
        padding: var(--spacing-xl);
        margin-top: 0;
    }

    .demo-more-buttons {
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .demo-more-btn {
        flex: 1;
        max-width: none;
        justify-content: center;
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

@media (max-width: 575.98px) {
    .demo-badge-modern {
        padding: var(--spacing-xs) var(--spacing-md);
    }

    .demo-badge-text {
        font-size: var(--font-size-xs);
    }

    .demo-hero-description br {
        display: none;
    }

    .demo-play-button {
        width: 60px;
        height: 60px;
    }

    .demo-play-icon {
        font-size: 1.5rem;
    }

    .demo-compact-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: var(--spacing-sm);
    }
}

/* 在线购买板块 */
.pricing-section {
    padding: var(--spacing-lg) 0 var(--spacing-2xl) 0;
    background: linear-gradient(135deg,
        rgba(248, 250, 252, 0.8) 0%,
        rgba(241, 245, 249, 0.8) 100%);
}

/* 视频引导样式 */
.video-guide-section {
    margin: var(--spacing-xl) 0;
    display: flex;
    justify-content: center;
}

.video-guide-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    color: white;
    max-width: 800px;
    width: 100%;
    box-shadow: var(--shadow-2xl);
}

.video-guide-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    justify-content: center;
}

.video-guide-header i {
    font-size: 2rem;
    color: #ffd700;
}

.video-guide-header h4 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.guide-badge {
    background: rgba(255, 215, 0, 0.2);
    color: #ffd700;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

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

.video-thumbnail {
    position: relative;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-lg);
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    overflow: hidden;
}

.video-thumbnail:hover {
    transform: scale(1.02);
    background: rgba(0, 0, 0, 0.4);
}

.play-button {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #667eea;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.video-thumbnail:hover .play-button {
    background: white;
    transform: scale(1.1);
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    padding: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 500;
}

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

.step-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.step-item:hover {
    background: rgba(255, 255, 255, 0.2);
}

.step-number {
    width: 32px;
    height: 32px;
    background: #ffd700;
    color: #667eea;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-sm);
}

.highlight-text {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.ai-model-notice {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.1), rgba(16, 185, 129, 0.1));
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--radius-lg);
}

.notice-content {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.notice-content i {
    color: var(--success-color);
    font-size: var(--font-size-lg);
    margin-top: 0.125rem;
}

.notice-text {
    color: var(--gray-700);
    line-height: 1.6;
}

/* 简化的视频引导按钮 */
.video-guide-button-section {
    display: flex;
    justify-content: center;
    margin: var(--spacing-xl) 0;
}

.video-guide-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    min-width: 280px;
}

.video-guide-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2xl);
    background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
}

.video-guide-button i {
    font-size: 2rem;
    color: #ffd700;
}

.video-guide-button small {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    font-weight: 400;
}

/* Tab切换样式 - 开关风格 */
.pricing-tabs {
    margin: var(--spacing-xl) 0;
}

.tab-toggle-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.tab-toggle-wrapper {
    position: relative;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50px;
    padding: 6px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
}

.tab-toggle-wrapper input[type="radio"] {
    display: none;
}

.tab-toggle-label {
    position: relative;
    z-index: 2;
    padding: 12px 24px;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-600);
    white-space: nowrap;
    min-width: 120px;
    justify-content: center;
}

.tab-toggle-label i {
    font-size: 1.1rem;
}

.tab-toggle-wrapper input[type="radio"]:checked + .tab-toggle-label {
    color: white;
}

.tab-toggle-slider {
    position: absolute;
    top: 6px;
    left: 6px;
    width: calc(50% - 6px);
    height: calc(100% - 12px);
    background: var(--gradient-primary);
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.tab-toggle-wrapper input[name="pricing-tab"]:nth-of-type(2):checked ~ .tab-toggle-slider {
    transform: translateX(100%);
}

/* 视频指南图标按钮 */
.video-guide-section {
    display: flex;
    justify-content: center;
    margin: var(--spacing-lg) 0;
}

.video-guide-icon-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.video-guide-icon-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.2) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.video-guide-icon-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

.video-guide-icon-btn:hover::before {
    transform: translateX(100%);
}

.video-guide-icon-btn:active {
    transform: translateY(-1px) scale(1.02);
}

.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 0.5rem;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
}

.toggle-label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: var(--font-size-sm);
}

.discount-badge {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    margin-left: 0.25rem;
}

.toggle-switch {
    position: relative;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-switch label {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gray-300);
    border-radius: 26px;
    transition: 0.3s;
}

.toggle-switch label:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background: var(--white);
    border-radius: 50%;
    transition: 0.3s;
}

.toggle-switch input:checked + label {
    background: var(--primary-color);
}

.toggle-switch input:checked + label:before {
    transform: translateX(24px);
}

.pricing-category {
    margin-bottom: var(--spacing-2xl);
}

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

.category-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.category-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

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

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    border: 2px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    height: auto;
    min-height: 420px;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

/* 新的卡片样式 */
.pricing-card.trial-card {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.05), rgba(16, 185, 129, 0.05));
    border: 2px solid rgba(34, 197, 94, 0.3);
}

.pricing-card.yearly-card {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05), rgba(217, 119, 6, 0.05));
    border: 2px solid rgba(245, 158, 11, 0.3);
}

.trial-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.savings-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.enterprise-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    box-shadow: var(--shadow-lg);
}

.plan-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: white;
    font-size: 1.5rem;
}

.trial-highlight {
    color: var(--success-color);
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.value-prop {
    color: var(--primary-color);
    font-weight: 600;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.savings-highlight {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.original-price {
    color: var(--gray-500);
    text-decoration: line-through;
    font-size: var(--font-size-sm);
}

.savings {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.action-note {
    text-align: center;
    color: var(--gray-600);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-sm);
}

.pulse-button {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

.recommended-button {
    background: var(--gradient-primary);
    border: none;
    position: relative;
    overflow: hidden;
}

.recommended-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.recommended-button:hover::before {
    left: 100%;
}

.savings-button {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    border: none;
    color: white;
}

.savings-button:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
    color: white;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.plan-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.plan-description {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
}

.price-container {
    position: relative;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.currency {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
}

.amount {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--gray-900);
}

.period {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
}

.save {
    background: var(--success-color);
    color: var(--white);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-left: 0.5rem;
}

.pricing-features {
    margin-bottom: var(--spacing-md);
}

.pricing-features .feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    color: var(--gray-700);
}

.pricing-features .feature-item i {
    color: var(--success-color);
    font-size: var(--font-size-lg);
}

.pricing-action {
    margin-top: auto;
}

/* 算力充值样式 */
.credits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.credit-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 2px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.credit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.credit-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.02);
}

.credit-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
}

.credit-card.enterprise {
    background: linear-gradient(135deg,
        rgba(102, 126, 234, 0.05) 0%,
        rgba(118, 75, 162, 0.05) 100%);
    border-color: var(--primary-color);
}

.credit-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.credit-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.125rem;
}

.credit-badge {
    padding: 0.25rem 0.75rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.credit-content {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.credit-content h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.credit-amount {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.credit-amount span {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
}

.credit-price {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.original-price {
    font-size: var(--font-size-lg);
    color: var(--gray-500);
    text-decoration: line-through;
    font-weight: 400;
    margin-left: 0.5rem;
}

.credit-description {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.usage-estimate {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    background: rgba(102, 126, 234, 0.05);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.estimate-item {
    display: flex;
    align-items: center;
    font-size: var(--font-size-xs);
    color: var(--gray-700);
    font-weight: 500;
}

.feature-item.highlight {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(217, 119, 6, 0.1));
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.feature-item.highlight i {
    color: #f59e0b;
}

.credit-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.credit-features .feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--gray-700);
}

.credit-features .feature-item i {
    color: var(--success-color);
}

.credit-action {
    margin-top: auto;
}

/* 购买说明 */
.pricing-explanation {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.explanation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.explanation-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.explanation-header i {
    color: var(--primary-color);
    font-size: var(--font-size-xl);
}

.explanation-header h5 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.explanation-content p {
    color: var(--gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.usage-list,
.guarantee-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.usage-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: var(--radius-md);
}

.usage-function {
    font-weight: 600;
    color: var(--gray-700);
}

.usage-cost {
    font-weight: 700;
    color: var(--primary-color);
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-700);
}

.guarantee-item i {
    color: var(--success-color);
}

.payment-methods {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.payment-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.5rem;
    background: rgba(102, 126, 234, 0.05);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    color: var(--gray-700);
}

.payment-item i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

/* 手机端简化按钮样式 */
.mobile-pricing-buttons,
.mobile-credits-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    padding: 0 var(--spacing-md);
    max-height: 70vh;
    justify-content: center;
}

.mobile-pricing-button,
.mobile-credits-button {
    background: var(--white);
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    min-height: auto;
}

.mobile-pricing-button:hover,
.mobile-credits-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.mobile-pricing-button.featured,
.mobile-credits-button.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(37, 99, 235, 0.05));
    transform: scale(1.02);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
}

.mobile-pricing-button.featured::before,
.mobile-credits-button.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.mobile-pricing-badge,
.mobile-credits-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.mobile-pricing-badge.trial {
    background: rgba(34, 197, 94, 0.1);
    color: rgb(34, 197, 94);
}

.mobile-pricing-badge.hot,
.mobile-credits-badge.hot {
    background: rgba(239, 68, 68, 0.1);
    color: rgb(239, 68, 68);
}

.mobile-pricing-badge.savings {
    background: rgba(245, 158, 11, 0.1);
    color: rgb(245, 158, 11);
}

.mobile-credits-badge.basic {
    background: rgba(99, 102, 241, 0.1);
    color: rgb(99, 102, 241);
}

.mobile-credits-badge.enterprise {
    background: rgba(139, 92, 246, 0.1);
    color: rgb(139, 92, 246);
}

.mobile-pricing-title,
.mobile-credits-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.mobile-pricing-price,
.mobile-credits-price {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.mobile-pricing-price span,
.mobile-credits-price span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-600);
}

.mobile-pricing-desc,
.mobile-credits-desc {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

/* 添加点击反馈效果 */
.mobile-pricing-button:active,
.mobile-credits-button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* 确保在手机端隐藏桌面版本 */
@media (max-width: 767.98px) {
    .pricing-grid,
    .credits-grid {
        display: none !important;
    }
}

/* 确保在桌面端隐藏手机版本 */
@media (min-width: 768px) {
    .mobile-pricing-buttons,
    .mobile-credits-buttons {
        display: none !important;
    }
}

@media (max-width: 767.98px) {
    .pricing-section {
        padding: var(--spacing-md) 0 var(--spacing-xl) 0;
    }

    .pricing-grid,
    .credits-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

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

    .credit-card.featured {
        transform: none;
    }

    .video-guide-button {
        min-width: auto;
        width: 100%;
        max-width: 300px;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .tab-toggle-wrapper {
        flex-direction: row;
        padding: 4px;
        width: auto;
        max-width: 280px;
        margin: 0 auto;
    }

    .tab-toggle-label {
        min-width: auto;
        width: auto;
        padding: 8px 16px;
        font-size: 0.8rem;
        flex: 1;
    }

    .tab-toggle-label i {
        font-size: 0.9rem;
    }

    .tab-toggle-slider {
        width: calc(50% - 4px);
        height: calc(100% - 8px);
        transform: translateX(0) !important;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .tab-toggle-wrapper input[name="pricing-tab"]:nth-of-type(2):checked ~ .tab-toggle-slider {
        transform: translateX(100%) !important;
    }

    .video-guide-icon-btn {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .usage-estimate {
        gap: var(--spacing-xs);
    }

    .estimate-item {
        font-size: var(--font-size-2xs);
    }

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

    .payment-methods {
        grid-template-columns: 1fr;
    }
}

/* 小屏幕设备进一步优化 */
@media (max-width: 575.98px) {
    .mobile-pricing-buttons,
    .mobile-credits-buttons {
        padding: 0 var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .mobile-pricing-button,
    .mobile-credits-button {
        padding: var(--spacing-md);
    }

    .mobile-pricing-title,
    .mobile-credits-title {
        font-size: var(--font-size-base);
    }

    .mobile-pricing-price,
    .mobile-credits-price {
        font-size: var(--font-size-xl);
    }

    .tab-toggle-wrapper {
        max-width: 260px;
        padding: 3px;
    }

    .tab-toggle-label {
        padding: 6px 10px;
        font-size: 0.7rem;
        gap: 3px;
    }

    .tab-toggle-label i {
        font-size: 0.8rem;
    }

    .tab-toggle-slider {
        width: calc(50% - 3px);
        height: calc(100% - 6px);
    }
}









/* 用户案例样式 - 横向滚动 */
.cases-section {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    overflow: hidden;
}

/* 案例部分包装器 */
.cases-section-wrapper {
    margin-top: var(--spacing-2xl);
    position: relative;
}

/* 案例轮播容器 */
.cases-carousel-container {
    position: relative;
    overflow-x: auto;
    overflow-y: hidden;
    border-radius: var(--radius-2xl);
    width: 100%;
    scroll-behavior: smooth;
    scroll-snap-type: x mandatory;
    /* 隐藏滚动条但保持滚动功能 */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.cases-carousel-container::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

/* 导航按钮样式 */
.cases-nav-btn {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid rgba(102, 126, 234, 0.2);
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
}

.cases-nav-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.cases-nav-prev {
    left: 20px;
}

.cases-nav-next {
    right: 20px;
}

.cases-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: translateY(-50%) scale(0.9);
}

.cases-nav-btn:disabled:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--gray-400);
    transform: translateY(-50%) scale(0.9);
}

/* 导航按钮动画效果 */
.cases-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: var(--primary-color);
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
    z-index: -1;
}

.cases-nav-btn:hover::before {
    opacity: 0.1;
    transform: scale(1.2);
}

/* 当案例部分在视口中时显示控制元素 */
.cases-section-wrapper.in-viewport .cases-nav-btn {
    opacity: 0.8;
    visibility: visible;
}

.cases-section-wrapper.in-viewport .cases-progress-container {
    opacity: 1;
    visibility: visible;
}

.cases-section-wrapper.in-viewport .cases-nav-btn:hover {
    opacity: 1;
    transform: translateY(-50%) scale(1.1);
}

/* 进度指示器 */
.cases-progress-container {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.cases-progress-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cases-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 2px;
    transition: width 0.5s ease;
    width: 0%;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

.cases-carousel {
    display: flex;
    gap: var(--spacing-xl);
    width: max-content;
    transition: transform 0.5s ease;
    padding: 0 var(--spacing-xl);
}

.case-slide {
    flex: 0 0 350px;
    min-width: 350px;
    scroll-snap-align: start;
}



/* 移动端响应式调整 */
@media (max-width: 768px) {
    .cases-nav-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .cases-nav-prev {
        left: 10px;
    }

    .cases-nav-next {
        right: 10px;
    }

    .cases-progress-container {
        bottom: 20px;
    }

    .cases-progress-bar {
        width: 150px;
        height: 3px;
    }

    .case-slide {
        flex: 0 0 280px;
        min-width: 280px;
        scroll-snap-align: start;
    }
}

@media (max-width: 480px) {
    .cases-nav-btn {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }

    .cases-nav-prev {
        left: -17px;
    }

    .cases-nav-next {
        right: -17px;
    }

    .case-slide {
        flex: 0 0 250px;
        min-width: 250px;
        scroll-snap-align: start;
    }

    .cases-progress-bar {
        width: 150px;
        height: 3px;
    }
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    height: 100%;
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.case-video {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.case-video img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-video img {
    transform: scale(1.05);
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(102, 126, 234, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.case-card:hover .play-overlay {
    background: var(--primary-color);
    transform: translate(-50%, -50%) scale(1.1);
}

.case-content {
    padding: var(--spacing-lg);
}

.case-category {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.case-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.case-content p {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

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

.case-stats .stat {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
}



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

@media (max-width: 767.98px) {




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

/* 响应式优化 */
@media (max-width: 1199.98px) {
    .container {
        max-width: 960px;
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }
}

@media (max-width: 991.98px) {
    .container {
        max-width: 720px;
    }

    .hero-section {
        padding: 40px 0 50px;
        height: auto;
        min-height: auto;
    }

    .hero-features {
        justify-content: center;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .feature-item {
        width: auto;
        flex: 1;
        min-width: 120px;
        max-width: 220px;
        padding: 0.5rem 0.75rem;
        font-size: var(--font-size-sm);
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .hero-actions .btn {
        width: auto;
        flex: 1;
        min-width: 140px;
        max-width: 260px;
        padding: 0.75rem 1rem;
        font-size: var(--font-size-sm);
        text-align: center;
        justify-content: center;
        display: flex;
        align-items: center;
    }

    .floating-features {
        display: none;
    }

    /* 在平板设备上也隐藏图片区域 */
    .hero-visual {
        display: none !important;
    }

    /* 确保内容占满整个宽度 */
    .hero-section .col-lg-6 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

@media (max-width: 767.98px) {
    .container {
        max-width: 540px;
        padding: 0 var(--spacing-md);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .section-description {
        font-size: var(--font-size-base);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
        text-align: center;
    }

    .hero-description {
        font-size: var(--font-size-base);
        text-align: center;
    }

    .hero-actions {
        justify-content: center;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: var(--font-size-base);
        width: 100%;
        max-width: 280px;
    }
}

@media (max-width: 575.98px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }

    .hero-section {
        padding: 20px 0 30px;
        height: auto;
        min-height: auto;
    }

    .section-title {
        font-size: var(--font-size-xl);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
        line-height: 1.2;
        margin-bottom: var(--spacing-md);
    }

    .hero-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }

    .hero-features {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-xs);
        margin-bottom: var(--spacing-lg);
        flex-wrap: wrap;
    }

    .feature-item {
        justify-content: center;
        padding: 0.375rem 0.5rem;
        font-size: var(--font-size-xs);
        width: auto;
        flex: 1;
        min-width: 100px;
        max-width: 180px;
    }

    .hero-actions {
        flex-direction: row;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-xs);
        flex-wrap: wrap;
    }

    .hero-actions .btn {
        width: auto;
        flex: 1;
        min-width: 120px;
        max-width: 220px;
        padding: 0.625rem 0.75rem;
        font-size: var(--font-size-xs);
        text-align: center;
        justify-content: center;
        display: flex;
        align-items: center;
    }

    /* 确保在小屏幕上隐藏图片区域 */
    .hero-visual {
        display: none !important;
    }
}

/* 视频播放按钮通用样式 */
.video-play-btn {
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-play-btn:hover {
    transform: scale(1.02);
}



/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

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

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

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

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

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

/* 选择文本样式 */
::selection {
    background: var(--primary-color);
    color: var(--white);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--white);
}

/* 焦点样式 */
.btn:focus,
.nav-link:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 无障碍优化 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 打印样式 */
@media print {
    .navbar,
    .hero-actions,
    .btn,
    .video-play-btn,
    .floating-features {
        display: none !important;
    }

    .hero-section {
        padding: 2rem 0;
    }

    .section-title,
    .hero-title {
        color: black !important;
    }
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.back-to-top:active {
    transform: translateY(-1px);
}

/* 视频模态框样式 */
.video-container-modal {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 宽高比 */
    overflow: hidden;
}

.video-container-modal video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-content {
    border: none;
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.modal-header {
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    padding: 1rem 1.5rem;
}

.modal-title {
    font-weight: 600;
    color: var(--gray-900);
}

/* 移动端优化 */
@media (max-width: 767.98px) {
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
        font-size: 1.125rem;
    }

    .modal-dialog {
        margin: 1rem;
    }

    .video-container-modal {
        padding-bottom: 75%; /* 移动端使用4:3宽高比 */
    }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 119, 198, 0.2) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-30px) rotate(1deg); }
    66% { transform: translateY(-20px) rotate(-1deg); }
}

.hero-content {
    color: white;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #0f3ecc 0%, #8787c7 50%, #0c0ce6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: #6366f1;
}

.hero-description {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    font-weight: 600;
    border-radius: 12px;
    padding: 12px 24px;
    transition: all 0.3s ease;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-lg);
}

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

.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
    transform: translateY(-2px);
}

/* Hero视觉区域 */
.hero-visual {
    position: relative;
    z-index: 2;
}

.video-showcase {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.video-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-container:hover {
    transform: translateY(-10px);
    box-shadow: 0 35px 70px rgba(0, 0, 0, 0.4);
}

.video-thumbnail {
    width: 100%;
    height: auto;
    display: block;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.video-container:hover .play-overlay {
    opacity: 1;
}

.play-button {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    transition: all 0.3s ease;
    animation: pulse-play 2s infinite;
}

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

.floating-cards {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}



@keyframes float-card {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}







.section-description {
    font-size: 1.125rem;
    color: #6b7280;
    max-width: 600px;
    margin: 0 auto;
}



.feature-card-modern {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    height: 100%;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 1px solid rgba(99, 102, 241, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.feature-card-modern:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.feature-card-modern h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card-modern p {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 0.875rem;
    color: #6b7280;
}

.feature-list i {
    color: var(--success-color);
    font-size: 1rem;
}





.stat-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}













/* 页脚样式 */
.footer-section {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-lg) 0;
}


.copyright,
.icp {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    margin: 0;
    line-height: 1.5;
}

.icp a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s ease;
}

.icp a:hover {
    color: var(--gray-300);
    text-decoration: underline;
}

@media (max-width: 767.98px) {
    /* 客户评价轮播响应式 */
    .testimonial-slide {
        flex: 0 0 320px;
        min-width: 320px;
    }



    /* 用户案例响应式 */
    .case-video img {
        height: 200px;
    }

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

    .case-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
    }



    /* Footer响应式 */
    .footer-section {
        text-align: center;
    }

    .footer-bottom {
        text-align: center;
    }

    .footer-bottom .row {
        text-align: center;
    }

    .footer-bottom .col-md-6 {
        text-align: center !important;
        margin-bottom: var(--spacing-sm);
    }
}

/* 联系我们弹出层样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--white);
    margin: 10% auto;
    padding: 0;
    border: none;
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 400px;
    box-shadow: var(--shadow-2xl);
    position: relative;
    animation: modalSlideIn 0.3s ease-out;
}

.contact-modal {
    text-align: center;
}

.contact-modal-body {
    padding: 2rem;
}

.qr-code-image {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
}

.contact-text {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

/* 更多联系方式按钮样式 */
.contact-modal .btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background-color: transparent;
    transition: all 0.2s ease;
    text-decoration: none;
}

.contact-modal .btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    color: var(--gray-400);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
    z-index: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.close:hover,
.close:focus {
    color: var(--gray-600);
    background-color: var(--gray-100);
    text-decoration: none;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 20% auto;
    }

    .qr-code-image {
        width: 180px;
        height: 180px;
    }

    .contact-modal-body {
        padding: 1.5rem;
    }
}

/* 最高优先级：确保PC大屏幕显示3列布局 */
@media screen and (min-width: 992px) {
    .demo-cards-grid.d-md-block,
    .demo-cards-grid {
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        grid-template-rows: repeat(2, 1fr) !important;
        gap: var(--spacing-xl) !important;
        max-width: 1200px !important;
        margin: var(--spacing-2xl) auto 0 auto !important;
    }
}

/* 确保卡片在网格中正确显示 */
@media screen and (min-width: 992px) {
    .demo-card-compact.d-md-block {
        display: block !important;
        width: 100% !important;
        max-width: none !important;
    }
}

/* ==================== LLM积分相关样式 ==================== */

/* 积分赠送区域 */
.credits-bonus {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08), rgba(217, 119, 6, 0.05));
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-lg);
    text-align: center;
}

.bonus-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: #d97706;
}

.bonus-item i {
    font-size: var(--font-size-lg);
    color: #f59e0b;
}

/* LLM积分说明区域 */
.llm-credits-notice {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(37, 99, 235, 0.03));
    border: 1px solid rgba(59, 130, 246, 0.15);
    border-radius: var(--radius-xl);
}

.notice-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto;
}

.notice-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.notice-content {
    flex: 1;
}

.notice-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-xs);
}

.notice-description {
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--gray-700);
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .notice-container {
        flex-direction: row;
        text-align: left;
        gap: var(--spacing-sm);
    }

    .notice-icon {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }

    .llm-credits-notice {
        padding: var(--spacing-md);
        margin: var(--spacing-md) 0;
    }

    .notice-title {
        font-size: var(--font-size-sm);
        margin-bottom: calc(var(--spacing-xs) / 2);
    }

    .notice-description {
        font-size: var(--font-size-xs);
        line-height: 1.4;
    }

    .credits-bonus {
        margin: var(--spacing-md) 0;
        padding: var(--spacing-sm);
    }

    .bonus-item {
        font-size: var(--font-size-sm);
    }
}