/* ========================================
   ORC_CROL 科洛视频 - 全新三屏设计
   ======================================== */

/* ========== CSS变量定义 ========== */
:root {
    /* 主色调 - 深色科技风 */
    --color-bg-dark: #0F0F1A;
    --color-bg-medium: #1A1A2E;
    --color-bg-light: #2A2A3E;
    --color-bg-card: #1E1E30;
    
    /* 主题色 */
    --color-primary: #1A5FFF;
    --color-primary-light: #3D7FFF;
    --color-secondary: #8A2BE2;
    --color-accent: #00D4FF;
    
    /* 文字颜色 */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #B0B0C0;
    --color-text-muted: #6B6B80;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #1A5FFF 0%, #8A2BE2 100%);
    --gradient-secondary: linear-gradient(135deg, #00D4FF 0%, #1A5FFF 100%);
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(26, 95, 255, 0.3);
    
    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    
    /* 字体 */
    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.125rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(26, 95, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26, 95, 255, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-bg-light);
}

.btn-secondary:hover {
    background: var(--color-bg-light);
    border-color: var(--color-primary);
}

.btn-icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

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

/* ========== 页面区域 ========== */
.section {
    min-height: 85vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.section-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-2xl);
}

/* ========== 第一屏：Hero ========== */
.hero-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding-top: calc(5rem + 30px);
    padding-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2xl);
    position: relative;
    z-index: 2;
}

/* 左侧内容 */
.hero-left {
    flex: 1;
    max-width: 600px;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(26, 95, 255, 0.1);
    border: 1px solid rgba(26, 95, 255, 0.3);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    margin-top: -50px;
}

.badge-icon {
    font-size: 1.5rem;
}

.badge-text {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-xl);
    line-height: 1.2;
}

.title-line {
    display: block;
    color: var(--color-text-secondary);
    font-weight: 300;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

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

/* 特点列表 */
.hero-features {
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
    color: var(--color-text-secondary);
}

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

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

/* 右侧水波纹CROL动画 */
.hero-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.crol-ripple-container {
    position: relative;
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.crol-center {
    width: 140px;
    height: 140px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 60px rgba(26, 95, 255, 0.6);
    position: relative;
    z-index: 10;
    animation: pulse-center 3s ease-in-out infinite;
}

.crol-text {
    font-size: 2.5rem;
    font-weight: 900;
    color: white;
    letter-spacing: 4px;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* 水波纹动画 */
.ripple {
    position: absolute;
    border-radius: 50%;
    border: 2px solid;
    opacity: 0;
    animation: ripple-wave 4s ease-out infinite;
    pointer-events: none;
}

.ripple-1 {
    width: 180px;
    height: 180px;
    border-color: rgba(26, 95, 255, 0.6);
    animation-delay: 0s;
}

.ripple-2 {
    width: 240px;
    height: 240px;
    border-color: rgba(26, 95, 255, 0.5);
    animation-delay: 0.8s;
}

.ripple-3 {
    width: 300px;
    height: 300px;
    border-color: rgba(138, 43, 226, 0.4);
    animation-delay: 1.6s;
}

.ripple-4 {
    width: 360px;
    height: 360px;
    border-color: rgba(0, 212, 255, 0.3);
    animation-delay: 2.4s;
}

.ripple-5 {
    width: 400px;
    height: 400px;
    border-color: rgba(26, 95, 255, 0.2);
    animation-delay: 3.2s;
}

@keyframes pulse-center {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 60px rgba(26, 95, 255, 0.6);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 80px rgba(26, 95, 255, 0.8);
    }
}

@keyframes ripple-wave {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* CROL四个步骤 */
.crol-steps {
    position: absolute;
    width: 560px;
    height: 560px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 15;
}

.crol-step {
    position: absolute;
    width: 100px;
    height: 100px;
    background: var(--color-bg-card);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 4px;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: auto;
    box-shadow: 0 0 30px rgba(26, 95, 255, 0.4);
    z-index: 20;
    overflow: hidden;
}

.crol-step:hover {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border-color: var(--color-accent);
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.7), 0 0 80px rgba(26, 95, 255, 0.5);
    background: rgba(26, 95, 255, 0.15);
}

.crol-step-letter {
    font-size: 2rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all 0.3s ease;
}

.crol-step:hover .crol-step-letter {
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.8));
}

/* 四个步骤位置 - 四角分布 */
.crol-step-c {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation: step-float 4s ease-in-out infinite;
}

.crol-step-r {
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    animation: step-float 4s ease-in-out infinite 1s;
}

.crol-step-o {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    animation: step-float 4s ease-in-out infinite 2s;
}

.crol-step-l {
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    animation: step-float 4s ease-in-out infinite 3s;
}

.crol-step-c:hover,
.crol-step-r:hover,
.crol-step-o:hover,
.crol-step-l:hover {
    transform: translateX(-50%) scale(1.2);
}

.crol-step-r:hover,
.crol-step-l:hover {
    transform: translateY(-50%) scale(1.2);
}

@keyframes step-float {
    0%, 100% {
        box-shadow: 0 0 20px rgba(26, 95, 255, 0.3);
    }
    50% {
        box-shadow: 0 0 35px rgba(138, 43, 226, 0.5);
    }
}

/* 步骤标签 - 默认显示 */
.crol-step-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
    opacity: 0.7;
    transition: all 0.3s ease;
    pointer-events: none;
    text-align: left;
}

.crol-step:hover .crol-step-label {
    opacity: 0;
    transform: scale(0.8);
}

.crol-step:hover .crol-step-letter {
    opacity: 0;
    transform: scale(0.8);
}

/* 详情卡片 - 扩展圆形内显示 */
.crol-detail-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 130px;
    height: 130px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: var(--spacing-sm);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 21;
    text-align: left;
}

.crol-step:hover .crol-detail-card {
    opacity: 1;
    transition-delay: 0.15s;
}

.crol-detail-title {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 2px;
    white-space: nowrap;
}

.crol-detail-subtitle {
    font-size: 0.5625rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.crol-detail-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.crol-detail-item {
    font-size: 0.625rem;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
    line-height: 1.3;
}

.crol-detail-item::before {
    content: '• ';
    color: var(--color-primary);
}

.crol-detail-item:hover {
    color: var(--color-text-primary);
}

/* 连接线动画 */
.crol-connection-line {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.crol-connection-line svg {
    width: 100%;
    height: 100%;
}

/* 粒子画布 */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* 滚动提示 */
.scroll-indicator {
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
    cursor: pointer;
    z-index: 10;
}

.scroll-indicator svg {
    width: 24px;
    height: 24px;
}

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

/* ========== 第二屏：数据 + 案例 ========== */
.data-section {
    background: var(--color-bg-medium);
}

.section-header {
    text-align: left;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* 数据卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: left;
    transition: var(--transition-base);
}

.stat-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

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

/* 案例展示 */
.cases-section {
    margin-top: var(--spacing-2xl);
}

.cases-title {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: left;
    margin-bottom: var(--spacing-lg);
}

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

.case-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition-base);
}

.case-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.case-image {
    aspect-ratio: 4/3;
    background: var(--color-bg-light);
    position: relative;
    overflow: hidden;
}

.case-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-sm);
}

.play-icon {
    font-size: 3rem;
    color: var(--color-primary);
    opacity: 0.8;
}

.case-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    background: rgba(26, 95, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
}

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

.case-info h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

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

/* ========== 第三屏：联系方式 + Footer ========== */
.contact-section {
    background: linear-gradient(180deg, #1A1A2E 0%, #0F0F1A 100%);
    flex-direction: column;
    justify-content: space-between;
}

.contact-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: var(--spacing-2xl);
}

.contact-content {
    max-width: 600px;
    text-align: left;
}

.contact-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

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

.contact-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-start;
}

/* Footer */
.footer {
    width: 100%;
    background: var(--color-bg-dark);
    border-top: 1px solid var(--color-bg-light);
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-brand {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.logo-icon {
    font-size: 1.5rem;
}

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

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

.footer-partners {
    margin-bottom: var(--spacing-xl);
}

.footer-partners h4 {
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    margin-bottom: var(--spacing-md);
}

.partner-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.partner-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-bg-light);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: var(--transition-base);
}

.partner-link:hover {
    border-color: var(--color-primary);
    color: var(--color-text-primary);
}

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

.footer-bottom {
    border-top: 1px solid var(--color-bg-light);
    padding-top: var(--spacing-lg);
}

.footer-legal {
    text-align: left;
    margin-bottom: var(--spacing-md);
}

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

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

.footer-legal .divider {
    margin: 0 var(--spacing-sm);
    color: var(--color-bg-light);
}

.footer-copyright {
    text-align: left;
}

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

.powered-by {
    font-size: 0.75rem;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: left;
    }
    
    .hero-left {
        max-width: 100%;
    }
    
    .hero-features {
        display: inline-block;
        text-align: left;
    }
    
    .hero-actions {
        justify-content: flex-start;
    }
    
    .hero-right {
        margin-top: var(--spacing-xl);
    }
    
    .crol-ripple-container {
        width: 420px;
        height: 420px;
    }
    
    .crol-center {
        width: 120px;
        height: 120px;
    }
    
    .crol-text {
        font-size: 2rem;
    }
    
    .crol-steps {
        width: 420px;
        height: 420px;
    }
    
    .crol-step {
        width: 85px;
        height: 85px;
    }
    
    .crol-step-letter {
        font-size: 1.75rem;
    }
    
    .ripple-1 { width: 160px; height: 160px; }
    .ripple-2 { width: 200px; height: 200px; }
    .ripple-3 { width: 240px; height: 240px; }
    .ripple-4 { width: 280px; height: 280px; }
    .ripple-5 { width: 320px; height: 320px; }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .title-line {
        font-size: 1.25rem;
    }
    
    .hero-actions,
    .contact-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stats-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .crol-ripple-container {
        width: 340px;
        height: 340px;
    }
    
    .crol-steps {
        width: 340px;
        height: 340px;
    }
    
    .crol-step {
        width: 70px;
        height: 70px;
    }
    
    .crol-step-letter {
        font-size: 1.5rem;
    }
    
    .crol-step-label {
        font-size: 0.625rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .title-line {
        font-size: 1rem;
    }
    
    .brand-badge {
        font-size: 1rem;
    }
    
    .badge-text {
        font-size: 1rem;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .crol-ripple-container {
        width: 300px;
        height: 300px;
    }
    
    .crol-steps {
        width: 300px;
        height: 300px;
    }
    
    .crol-center {
        width: 100px;
        height: 100px;
    }
    
    .crol-text {
        font-size: 1.75rem;
    }
    
    .crol-step {
        width: 60px;
        height: 60px;
    }
    
    .crol-step-letter {
        font-size: 1.25rem;
    }
    
    .crol-step-label {
        font-size: 0.5625rem;
    }
}
/* ===== 顶栏：悬浮在hero上方 ===== */
.hero-section {
    background: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 100%);
    position: relative;
    overflow: hidden;
}

/* ===== 顶栏：Logo + 标题 ===== */
.top-bar {
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 16px 40px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.top-bar-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    position: relative;
}

.top-bar-logo {
    width: 220px;
    height: auto;
    flex-shrink: 0;
}

.top-bar-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
    display: inline-flex;
    align-items: baseline;
    gap: 12px;
    white-space: nowrap;
}

.top-bar-title .title-line {
    display: inline;
    font-size: 3rem;
    font-weight: 700;
    color: #e2e8f0;
}

.top-bar-title .title-highlight {
    display: inline;
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== 系统核心优势 ===== */
.features-title {
    text-align: left;
    font-size: 2rem;
    font-weight: 700;
    color: #94a3b8;
    margin-bottom: 24px;
    margin-top: -30px;
    letter-spacing: 3px;
}

.hero-features {
    margin-left: 0;
}

.feature-item {
    font-size: 1.3rem;
}

.feature-icon {
    font-size: 1.5rem;
}

.feature-text {
    font-size: 1.3rem;
}

/* ===== 页脚左右布局 ===== */
.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
}

.footer-info {
    flex: 1;
    min-width: 280px;
}

.footer-info p {
    font-size: 13px;
    color: #64748b;
    margin: 4px 0;
    line-height: 1.6;
}

.footer-info .brand-logo {
    margin-bottom: 8px;
}

.footer-logo-img {
    width: 120px;
    height: auto;
    vertical-align: middle;
    margin-right: 8px;
}

.icp-link {
    color: #64748b;
    text-decoration: underline;
}

.icp-link:hover {
    color: #8b5cf6;
}

.footer-partners {
    flex: 1;
    min-width: 200px;
}

.footer-partners h4 {
    font-size: 14px;
    color: #94a3b8;
    margin-bottom: 10px;
    font-weight: 600;
}

.partner-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.partner-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: #64748b;
    text-decoration: none;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    transition: all 0.2s;
}

.partner-link:hover {
    color: #a78bfa;
    background: rgba(139, 92, 246, 0.1);
    border-color: rgba(139, 92, 246, 0.3);
}

.partner-icon {
    font-size: 16px;
}

@media (max-width: 768px) {
    .features-title { font-size: 1.3rem; }
    .feature-item { font-size: 1rem; }
    .feature-text { font-size: 1rem; }
    .feature-icon { font-size: 1.2rem; }
    .footer-main {
        flex-direction: column;
        gap: 20px;
    }
}

/* ========== Showcase Tabs ========== */
.showcase-tabs {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 32px;
}

.showcase-tab {
    padding: 8px 24px;
    border: 1px solid var(--color-bg-light);
    border-radius: 999px;
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.showcase-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.showcase-tab.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* ========== Video Cover ========== */
.video-cover {
    width: 100%;
    height: 100%;
    aspect-ratio: 4/3;
    position: relative;
}

.video-cover-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(0,0,0,0.35);
    opacity: 0;
    transition: opacity 0.3s;
}

.case-card:hover .video-cover-overlay {
    opacity: 1;
}

.video-duration {
    font-size: 13px;
    color: #fff;
    background: rgba(0,0,0,0.6);
    padding: 2px 8px;
    border-radius: 4px;
}

.video-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.video-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    background: rgba(26, 95, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 50px;
}

/* ========== Video Modal ========== */
.video-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.3s;
}

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

.video-modal {
    background: #1a1a2e;
    border-radius: 16px;
    padding: 20px;
    max-width: 900px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.video-modal-body {
    width: 100%;
    background: #000;
    border-radius: 8px;
    overflow: hidden;
}

.video-modal-body video {
    display: block;
    width: 100%;
    max-height: 75vh;
    object-fit: contain;
    background: #000;
}

.video-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.video-modal-header h3 {
    color: #fff;
    font-size: 16px;
    font-weight: 500;
}

.video-modal-close {
    background: none;
    border: none;
    color: #999;
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.video-modal-close:hover {
    color: #fff;
}

/* ========== Loading / Empty ========== */
.showcase-loading, .showcase-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-bg-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 0.8s linear infinite;
}

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

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .showcase-tabs {
        flex-wrap: wrap;
        gap: 8px;
    }
    .showcase-tab {
        padding: 6px 16px;
        font-size: 13px;
    }
}