/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 导航栏 */
header {
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    overflow: hidden;
}

#star-network {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 2rem;
    position: relative;
    z-index: 1;
}

.logo {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.logo h1 {
    color: white;
    font-size: clamp(1.5rem, 1.8vw, 2rem);
    font-weight: 800;
    letter-spacing: 0.08em;
    margin: 0;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.logo-mark {
    font-size: 1.25em;
    font-weight: 900;
    background: linear-gradient(120deg, #ffe47a, #ff7d5f, #ff5252);
    -webkit-background-clip: text;
    color: transparent;
    text-shadow: 0 4px 15px rgba(255, 108, 92, 0.4);
}

.logo-name {
    font-weight: 600;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.5));
    -webkit-background-clip: text;
    color: transparent;
}

.logo-cn {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: 0.5em;
    margin-top: -2px;
    margin-bottom: 2px;
    font-weight: 500;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    padding-left: 2px; /* Visual balance for letter-spacing */
}

.logo-tagline {
    font-size: 0.75rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.8);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: opacity 0.3s;
    padding: 0.5rem 1rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    border-radius: 5px;
}

.nav-links a:hover,
.nav-links a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 主内容区 */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* 首页 Hero 区域 */
.hero {
    background: radial-gradient(circle at top right, #2a2a72 0%, #009ffd 100%);
    background-size: 200% 200%;
    animation: gradientBG 15s ease infinite;
    color: white;
    padding: 4rem 2rem;
    border-radius: 24px;
    margin-bottom: 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* 装饰性光晕 */
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
    transform: rotate(30deg);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.2rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: #bde0fe;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.hero-content h2 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 1.5rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(to right, #fff, #bde0fe);
    -webkit-background-clip: text;
    color: transparent;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem 1rem;
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 400;
    letter-spacing: 0.5px;
    line-height: 1.6;
}

.hero-subtitle-item {
    white-space: nowrap;
}

.hero-subtitle-divider {
    opacity: 0.6;
    font-weight: 300;
}

@media (max-width: 600px) {
    .hero-subtitle {
        flex-direction: column;
        gap: 0.8rem;
    }
    
    .hero-subtitle-divider {
        display: none;
    }
    
    .hero-subtitle-item {
        background: rgba(255, 255, 255, 0.1);
        padding: 0.4rem 1.2rem;
        border-radius: 20px;
        font-size: 1rem;
        width: 100%;
        max-width: 280px;
        border: 1px solid rgba(255, 255, 255, 0.15);
    }
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-top: 3.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    width: 100%;
    max-width: 600px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.stat-num {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.3), transparent);
}

@media (max-width: 768px) {
    .hero-stats {
        gap: 1rem;
        margin-top: 2.5rem;
    }
    
    .stat-num {
        font-size: 1.4rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
}

.description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.8;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: white;
    color: #2a2a72;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    background: #f8f9fa;
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(5px);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: white;
    transform: translateY(-3px);
}

/* 特性网格 */
.features {
    margin-bottom: 3rem;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(180px, 1fr));
    gap: 1.5rem;
    align-items: stretch;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #667eea;
}

.feature-card p {
    color: #666;
}

/* 对比CTA区域 */
.comparison-cta {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 2rem;
}

.cta-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

/* 页面标题 */
.page-header {
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    color: #666;
}

.page-header .eyebrow {
    letter-spacing: 0.4em;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: #667eea;
    margin-bottom: 0.8rem;
}

/* Feature Metrics UI */
.feature-metrics {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0 1rem;
    flex-wrap: wrap;
}

.metric-item {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #2a2a72 0%, #009ffd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.metric-dot {
    color: #ccc;
    font-weight: 300;
    font-size: 1.5rem;
}

.immersive-text {
    font-size: 1.1rem;
    color: #666;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
    margin-top: 0.5rem;
}

@media (max-width: 600px) {
    .feature-metrics {
        gap: 0.5rem;
    }
    
    .metric-item {
        font-size: 1.4rem;
    }
    
    .metric-dot {
        font-size: 1.2rem;
    }
}

/* Tech Hero */
.tech-hero {
    position: relative;
    padding: 4rem 2rem;
    text-align: center;
    background: #0f0c29;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
    overflow: hidden;
    margin-bottom: 3rem;
}

.tech-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(90deg, rgba(102, 126, 234, 0.05) 1px, transparent 1px),
        linear-gradient(rgba(102, 126, 234, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
    z-index: 0;
}

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

.tech-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #667eea;
    border: 1px solid #667eea;
    padding: 0.4rem 1rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    background: rgba(102, 126, 234, 0.1);
    box-shadow: 0 0 15px rgba(102, 126, 234, 0.2);
}

.tech-hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #fff, #a1c4fd);
    -webkit-background-clip: text;
    color: transparent;
    font-weight: 800;
}

.tech-description {
    max-width: 600px;
    margin: 0 auto;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
    line-height: 1.6;
    font-weight: 300;
}

/* 视频对比区域 */
.video-comparison {
    margin-bottom: 3rem;
}

.video-series {
    margin-bottom: 3rem;
}

.video-pair {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

/* 分隔符样式重构：带线条的三个方块 */
.series-separator {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80%;
    max-width: 800px;
    margin: 4rem auto;
    height: 40px;
    gap: 40px;
}

/* 左右线条 (利用容器伪元素) */
.series-separator::before,
.series-separator::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5));
    transition: all 0.4s ease;
}

.series-separator::after {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.5), transparent);
}

/* 中间方块 (利用原有 span) */
.series-separator .separator-orb {
    position: relative;
    display: block;
    width: 12px;
    height: 12px;
    border: 1px solid rgba(161, 196, 253, 0.8);
    transform: rotate(45deg);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 0 15px rgba(102, 126, 234, 0.4);
    transition: all 0.4s ease;
}

/* 左右方块 (利用 orb 伪元素) - 移除，改为 HTML 直接添加 */
.series-separator .separator-orb::before,
.series-separator .separator-orb::after {
    display: none;
}

/* 悬停效果 */
.series-separator:hover::before,
.series-separator:hover::after {
    background: linear-gradient(90deg, transparent, rgba(161, 196, 253, 0.8));
}

.series-separator:hover::after {
    background: linear-gradient(90deg, rgba(161, 196, 253, 0.8), transparent);
}

.series-separator:hover .separator-orb {
    transform: rotate(225deg) scale(1.3);
    border-color: #fff;
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
    box-shadow: 0 0 25px rgba(102, 126, 234, 0.8);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .series-separator {
        width: 90%;
        margin: 3rem auto;
        /* gap 保持一致，移除覆盖 */
    }
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Video Card Redesign */
.video-card {
    background: #1a1a2e;
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2);
    border-color: #667eea;
}

.video-card.highlight {
    border: 1px solid #667eea;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.15);
}

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

.video-group {
    margin-bottom: 2rem;
}

.video-group-title {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 5px solid #667eea;
}

.video-label {
    background: rgba(102, 126, 234, 0.1);
    color: #a1c4fd;
    padding: 0.8rem;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
    text-transform: uppercase;
    text-align: center;
}

.video-label.bistar {
    background: linear-gradient(90deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    color: #fff;
    text-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

/* Custom Video Player */
.video-container {
    position: relative;
    background: #000;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.video-container video.is-playing {
    object-fit: contain;
}

.video-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;
    cursor: pointer;
    transition: opacity 0.3s;
    z-index: 2;
}

.play-icon {
    width: 60px;
    height: 60px;
    background: rgba(102, 126, 234, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.5);
    transition: transform 0.2s;
}

.play-icon::after {
    content: '';
    border-style: solid;
    border-width: 10px 0 10px 16px;
    border-color: transparent transparent transparent white;
    margin-left: 4px;
}

.video-container:hover .play-icon {
    transform: scale(1.1);
    background: #667eea;
}

.tech-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 3;
}

.video-container:hover .tech-controls {
    opacity: 1;
}

.control-btn {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    width: 24px;
    height: 24px;
    padding: 0;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.control-btn:hover {
    opacity: 1;
    color: #667eea;
}

.progress-container {
    flex: 1;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
}

.progress-bar {
    width: 100%;
    height: 100%;
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: #667eea;
    box-shadow: 0 0 10px #667eea;
    transition: width 0.1s linear;
}

.time-display {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.8);
    font-family: monospace;
    min-width: 40px;
}

/* Tech Corners */
.tech-corner {
    position: absolute;
    width: 10px;
    height: 10px;
    border-color: rgba(102, 126, 234, 0.6);
    border-style: solid;
    pointer-events: none;
    z-index: 4;
    transition: all 0.3s;
}

.video-container:hover .tech-corner {
    width: 15px;
    height: 15px;
    border-color: #667eea;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.4);
}

.top-left { top: 10px; left: 10px; border-width: 2px 0 0 2px; }
.top-right { top: 10px; right: 10px; border-width: 2px 2px 0 0; }
.bottom-left { bottom: 10px; left: 10px; border-width: 0 0 2px 2px; }
.bottom-right { bottom: 10px; right: 10px; border-width: 0 2px 2px 0; }

.video-description {
    padding: 1.5rem;
}

.video-description p {
    margin-bottom: 1rem;
    color: #333;
    font-weight: 600;
}

.comparison-points {
    list-style: none;
    padding: 0;
}

.comparison-points li {
    padding: 0.5rem 0;
    color: #666;
}

.highlight-points li {
    color: #667eea;
    font-weight: 500;
}

/* 对比说明 */
/* 关于我们页面 */
.about-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.about-section {
    margin-bottom: 3rem;
}

.about-section h3 {
    font-size: 1.8rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.about-section p {
    line-height: 1.8;
    color: #333;
    margin-bottom: 1rem;
}

.about-section ul {
    margin-left: 1.5rem;
}

.about-section li {
    margin-bottom: 0.8rem;
    line-height: 1.8;
}

/* 应用场景卡片 */
.use-cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.use-case-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.use-case-card h4 {
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.use-case-card p {
    color: #666;
}

/* 优势展示 */
.advantages {
    margin-top: 1.5rem;
}

.advantage-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.advantage-number {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
    min-width: 60px;
}

.advantage-text h4 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.advantage-text p {
    color: #666;
}

/* 联系方式 */
.contact-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
}

.contact-section h3 {
    color: white;
    margin-bottom: 1rem;
}

.contact-section p {
    color: white;
}

.contact-info {
    margin-top: 1rem;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 2rem;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

@media (max-width: 768px) {
    header {
        position: relative;
    }

    nav {
        flex-direction: column;
        gap: 0.5rem;
        align-items: center;
        padding: 0.8rem 1rem;
    }

    .logo {
        align-items: center;
        text-align: center;
    }

    .logo h1 {
        font-size: 1.6rem;
    }

    .nav-links {
        flex-direction: row;
        gap: 0.5rem;
        text-align: center;
        width: auto;
        padding: 0;
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav-links li {
        width: auto;
    }

    .nav-links a {
        display: inline-block;
        width: auto;
        padding: 0.4rem 0.8rem;
        margin: 0;
        border-radius: 5px;
        font-size: 0.9rem;
    }

    .nav-links a.active,
    .nav-links a:hover {
        background-color: rgba(255, 255, 255, 0.25);
        box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
    }

    .hero {
        padding: 3rem 1.5rem;
        margin-bottom: 2rem;
    }

    .hero-content h2 {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 1.1rem;
    }

    .description {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .features-grid,
    .video-grid,
    .use-cases {
        grid-template-columns: 1fr;
    }

    .video-pair {
        grid-template-columns: 1fr;
    }

    .page-header h2 {
        font-size: 2rem;
    }

    .advantage-item {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (prefers-color-scheme: dark) {
    .metric-item {
        background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .metric-dot {
        color: #888;
    }

    .immersive-text {
        color: #ccc;
    }
}

.disclaimer {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: 0.5rem;
}