/* VideoPlayer 产品主题样式 - 蓝青色系科技感 */

[data-theme="videoplayer"] {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --secondary: #06b6d4;
    --accent: #6366f1;
    --gradient: linear-gradient(135deg, #0ea5e9, #06b6d4);
    --gradient-hover: linear-gradient(135deg, #0284c7, #0891b2);
    --tech-glow: rgba(14, 165, 233, 0.3);
}

[data-theme="videoplayer"] .hero-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #bae6fd 100%);
    position: relative;
    overflow: hidden;
}

[data-theme="videoplayer"] .hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

[data-theme="videoplayer"] .hero-title {
    background: linear-gradient(135deg, #0284c7 0%, #06b6d4 50%, #0ea5e9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

[data-theme="videoplayer"] .hero-badge {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border: 1px solid rgba(14, 165, 233, 0.2);
    color: #0284c7;
}

[data-theme="videoplayer"] .btn-hero-primary {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
    position: relative;
    overflow: hidden;
}

[data-theme="videoplayer"] .btn-hero-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

[data-theme="videoplayer"] .btn-hero-primary:hover::before {
    left: 100%;
}

[data-theme="videoplayer"] .btn-hero-primary:hover {
    background: linear-gradient(135deg, #0284c7, #0891b2);
    box-shadow: 0 6px 30px rgba(14, 165, 233, 0.4);
    transform: translateY(-2px);
}

[data-theme="videoplayer"] .btn-hero-secondary {
    background: rgba(14, 165, 233, 0.05);
    border: 2px solid rgba(14, 165, 233, 0.3);
    color: #0284c7;
}

[data-theme="videoplayer"] .btn-hero-secondary:hover {
    background: rgba(14, 165, 233, 0.1);
    border-color: #0ea5e9;
}

[data-theme="videoplayer"] .feature-card {
    background: #ffffff;
    border: 1px solid rgba(14, 165, 233, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

[data-theme="videoplayer"] .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #0ea5e9, #06b6d4);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

[data-theme="videoplayer"] .feature-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

[data-theme="videoplayer"] .feature-card:hover::before {
    transform: scaleX(1);
}

[data-theme="videoplayer"] .feature-icon {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

[data-theme="videoplayer"] .feature-title {
    color: #1e293b;
}

[data-theme="videoplayer"] .feature-desc {
    color: #64748b;
}

[data-theme="videoplayer"] .feature-tags .tag {
    background: rgba(14, 165, 233, 0.1);
    color: #0284c7;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

[data-theme="videoplayer"] .advantage-card {
    background: linear-gradient(135deg, #ffffff, #f0f9ff);
    border: 1px solid rgba(14, 165, 233, 0.1);
    transition: all 0.3s ease;
}

[data-theme="videoplayer"] .advantage-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

[data-theme="videoplayer"] .advantage-icon {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    color: #0ea5e9;
}

[data-theme="videoplayer"] .step-card {
    background: #ffffff;
    border: 1px solid rgba(14, 165, 233, 0.1);
    transition: all 0.3s ease;
}

[data-theme="videoplayer"] .step-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
}

[data-theme="videoplayer"] .step-number {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
}

[data-theme="videoplayer"] .step-icon {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    color: #0ea5e9;
}

[data-theme="videoplayer"] .step-line {
    background: linear-gradient(90deg, #0ea5e9, #06b6d4);
}

[data-theme="videoplayer"] .download-card {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.3);
    position: relative;
    overflow: hidden;
}

[data-theme="videoplayer"] .download-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

[data-theme="videoplayer"] .btn-download-primary {
    background: #ffffff;
    color: #0ea5e9;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

[data-theme="videoplayer"] .btn-download-primary:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.3);
}

[data-theme="videoplayer"] .support-card {
    background: #ffffff;
    border: 1px solid rgba(14, 165, 233, 0.1);
    transition: all 0.3s ease;
}

[data-theme="videoplayer"] .support-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

[data-theme="videoplayer"] .support-icon {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    color: #0ea5e9;
}

/* 视频播放器可视化样式 */
.player-visualizer {
    position: relative;
    padding: 40px;
}

.player-container {
    position: relative;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.2);
    border: 1px solid rgba(14, 165, 233, 0.1);
}

.player-demo {
    margin-bottom: 30px;
}

.video-preview {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 15px;
    background: rgba(0, 0, 0, 0.3);
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.preview-dots span:nth-child(1) {
    background: #ef4444;
}

.preview-dots span:nth-child(2) {
    background: #eab308;
}

.preview-dots span:nth-child(3) {
    background: #22c55e;
}

.preview-title {
    color: #94a3b8;
    font-size: 0.85rem;
}

.preview-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 150px;
    position: relative;
}

.video-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.play-button {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
    animation: pulse-play 2s ease-in-out infinite;
}

@keyframes pulse-play {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(14, 165, 233, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 30px rgba(14, 165, 233, 0.6);
    }
}

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

.video-wave {
    display: flex;
    gap: 4px;
    align-items: flex-end;
    margin-top: 30px;
    height: 40px;
}

.wave-bar {
    width: 6px;
    background: linear-gradient(180deg, #0ea5e9, #06b6d4);
    border-radius: 3px;
    animation: wave-bar 1s ease-in-out infinite;
}

.wave-bar:nth-child(1) { animation-delay: 0s; }
.wave-bar:nth-child(2) { animation-delay: 0.1s; }
.wave-bar:nth-child(3) { animation-delay: 0.2s; }
.wave-bar:nth-child(4) { animation-delay: 0.3s; }
.wave-bar:nth-child(5) { animation-delay: 0.4s; }

@keyframes wave-bar {
    0%, 100% {
        height: 15px;
    }
    50% {
        height: 35px;
    }
}

.player-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.player-controls .control-btn {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0ea5e9;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.player-controls .control-btn:hover {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
    transform: scale(1.1);
}

.player-controls .control-btn.play-control {
    width: 55px;
    height: 55px;
    font-size: 1.5rem;
}

.player-stats {
    display: flex;
    justify-content: space-around;
    padding-top: 20px;
    border-top: 1px solid rgba(14, 165, 233, 0.1);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.3rem;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.stat-content {
    text-align: left;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
}

.stat-label {
    font-size: 0.85rem;
    color: #64748b;
}

/* 高级功能卡片 */
.advanced-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc, #f0f9ff);
}

.advanced-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    height: 100%;
    transition: all 0.3s ease;
}

.advanced-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

.advanced-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: #ffffff;
    font-size: 1.5rem;
}

.advanced-card h3 {
    color: #1e293b;
    margin-bottom: 15px;
    font-weight: 600;
}

.advanced-card p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.advanced-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.advanced-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: #1e293b;
}

.advanced-list li i {
    color: #0ea5e9;
}

/* 格式支持区域 */
.formats-section {
    padding: 80px 0;
    background: #ffffff;
}

.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.format-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 15px;
    background: linear-gradient(135deg, #f8fafc, #f0f9ff);
    border-radius: 12px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    transition: all 0.3s ease;
}

.format-item:hover {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-color: #0ea5e9;
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.format-item:hover .format-icon,
.format-item:hover span {
    color: #ffffff;
}

.format-icon {
    font-size: 1.5rem;
    color: #0ea5e9;
    transition: color 0.3s ease;
}

.format-item span {
    font-weight: 600;
    color: #1e293b;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

/* 页面Hero */
.page-hero {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.page-hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
}

.page-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
}

/* 关于页面 */
.about-intro {
    padding: 80px 0;
    background: #ffffff;
}

.about-visual {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
}

.visual-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    animation: pulse 2s ease-in-out infinite;
}

.visual-circle-2 {
    width: 250px;
    height: 250px;
    animation-delay: 0.5s;
}

.visual-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 2.5rem;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.3);
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.5;
    }
}

.about-content {
    padding-left: 30px;
}

.about-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.about-desc {
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 25px;
}

.about-features .feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #1e293b;
}

.about-features .feature-item i {
    color: #0ea5e9;
}

.about-mission {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc, #f0f9ff);
}

.mission-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(14, 165, 233, 0.1);
    height: 100%;
    transition: all 0.3s ease;
}

.mission-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

.mission-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #ffffff;
    font-size: 1.8rem;
}

.mission-card h3 {
    color: #1e293b;
    margin-bottom: 15px;
    font-weight: 600;
}

.mission-card p {
    color: #64748b;
    line-height: 1.6;
}

.about-tech {
    padding: 80px 0;
    background: #ffffff;
}

.tech-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    height: 100%;
    transition: all 0.3s ease;
}

.tech-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
}

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

.tech-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.3rem;
}

.tech-header h3 {
    margin: 0;
    color: #1e293b;
    font-weight: 600;
}

.tech-content p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 15px;
}

.tech-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tech-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: #1e293b;
}

.tech-list li i {
    color: #0ea5e9;
}

.about-usecases {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fafc, #f0f9ff);
}

.usecase-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(14, 165, 233, 0.1);
    height: 100%;
    transition: all 0.3s ease;
}

.usecase-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

.usecase-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #0ea5e9;
    font-size: 1.5rem;
}

.usecase-card h4 {
    color: #1e293b;
    margin-bottom: 10px;
    font-weight: 600;
}

.usecase-card p {
    color: #64748b;
    font-size: 0.9rem;
}

.about-contact {
    padding: 80px 0;
    background: #ffffff;
}

.contact-card {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 16px;
    padding: 40px;
    color: #ffffff;
}

.contact-card h3 {
    margin-bottom: 10px;
    font-weight: 600;
}

.contact-card p {
    opacity: 0.9;
    margin-bottom: 20px;
}

.contact-info {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-contact {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #ffffff;
    color: #0ea5e9;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-contact:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    color: #0ea5e9;
}

/* 帮助页面 */
.help-section {
    padding: 60px 0;
    background: #f8fafc;
}

.help-nav {
    background: #ffffff;
    border-radius: 16px;
    padding: 25px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    position: sticky;
    top: 100px;
}

.help-nav-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
}

.help-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.help-nav-list li {
    margin-bottom: 5px;
}

.help-nav-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    color: #64748b;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.help-nav-list a:hover {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), rgba(6, 182, 212, 0.05));
    color: #0ea5e9;
}

.help-nav-list li.active a {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
}

.help-content {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px;
    border: 1px solid rgba(14, 165, 233, 0.1);
}

.help-block {
    margin-bottom: 50px;
}

.help-block:last-child {
    margin-bottom: 0;
}

.help-block-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(14, 165, 233, 0.1);
}

.help-block-title i {
    color: #0ea5e9;
}

.help-step {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: linear-gradient(135deg, #f8fafc, #f0f9ff);
    border-radius: 12px;
}

.step-num {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    margin: 0 0 8px;
    color: #1e293b;
    font-weight: 600;
}

.step-content p {
    margin: 0;
    color: #64748b;
}

.help-item {
    margin-bottom: 25px;
}

.help-item h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #1e293b;
    margin-bottom: 10px;
}

.help-item h4 i {
    color: #0ea5e9;
    font-size: 0.9rem;
}

.help-item p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 10px;
}

.help-item ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.help-item li {
    padding: 8px 0;
    color: #64748b;
}

.faq-item {
    margin-bottom: 15px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    background: linear-gradient(135deg, #f8fafc, #f0f9ff);
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
}

.faq-question i {
    color: #0ea5e9;
    transition: transform 0.3s ease;
}

.faq-question span {
    font-weight: 600;
    color: #1e293b;
}

.faq-answer {
    display: none;
    padding: 15px 20px;
    background: #ffffff;
}

.faq-answer p {
    margin: 0;
    color: #64748b;
    line-height: 1.6;
}

/* 购买页面 */
.buy-section {
    padding: 80px 0;
    background: #f8fafc;
}

.buy-intro {
    text-align: center;
    margin-bottom: 50px;
}

.buy-intro h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 10px;
}

.buy-intro p {
    color: #64748b;
}

.price-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    border: 2px solid rgba(14, 165, 233, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    position: relative;
}

.price-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
    transform: translateY(-5px);
}

.price-card-featured {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.2);
}

.price-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.price-header {
    text-align: center;
    margin-bottom: 25px;
}

.price-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 5px;
}

.price-desc {
    color: #64748b;
    font-size: 0.9rem;
}

.price-body {
    flex: 1;
}

.price-amount {
    text-align: center;
    margin-bottom: 25px;
}

.price-currency {
    font-size: 1.5rem;
    color: #0ea5e9;
    vertical-align: top;
}

.price-value {
    font-size: 3rem;
    font-weight: 700;
    color: #1e293b;
}

.price-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.price-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    color: #64748b;
    border-bottom: 1px solid rgba(14, 165, 233, 0.05);
}

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

.price-features li i {
    color: #0ea5e9;
}

.price-footer {
    margin-top: 25px;
}

.btn-buy {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-buy:hover {
    background: linear-gradient(135deg, #0284c7, #0891b2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.buy-notice {
    margin-top: 50px;
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(14, 165, 233, 0.1);
}

.buy-notice h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #1e293b;
    margin-bottom: 20px;
}

.buy-notice h3 i {
    color: #0ea5e9;
}

.buy-notice ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.buy-notice li {
    padding: 10px 0;
    color: #64748b;
    padding-left: 20px;
    position: relative;
}

.buy-notice li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #0ea5e9;
}

.buy-faq {
    padding: 80px 0;
    background: #ffffff;
}

.faq-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    height: 100%;
    transition: all 0.3s ease;
}

.faq-card:hover {
    border-color: #0ea5e9;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.15);
}

.faq-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    color: #0ea5e9;
    font-size: 1.3rem;
}

.faq-card h4 {
    color: #1e293b;
    margin-bottom: 10px;
    font-weight: 600;
}

.faq-card p {
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

/* 新闻详情页 */
.news-detail-section {
    padding: 60px 0;
    background: #f8fafc;
}

.news-detail-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px;
    border: 1px solid rgba(14, 165, 233, 0.1);
}

.news-header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
}

.news-title {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
}

.news-meta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.news-meta span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #64748b;
    font-size: 0.9rem;
}

.news-meta i {
    color: #0ea5e9;
}

.news-content {
    color: #374151;
    line-height: 1.8;
}

.news-content h3 {
    color: #1e293b;
    margin: 25px 0 15px;
}

.news-content ul {
    padding-left: 20px;
}

.news-content li {
    margin-bottom: 10px;
}

.news-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(14, 165, 233, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.news-share {
    display: flex;
    align-items: center;
    gap: 15px;
}

.news-share span {
    color: #64748b;
}

.share-btn {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0ea5e9;
    text-decoration: none;
    transition: all 0.3s ease;
}

.share-btn:hover {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
}

.news-nav {
    display: flex;
    gap: 15px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 8px;
    color: #0ea5e9;
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-btn:hover {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
}

.news-sidebar {
    position: sticky;
    top: 100px;
}

.sidebar-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 25px;
    border: 1px solid rgba(14, 165, 233, 0.1);
    margin-bottom: 20px;
}

.sidebar-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
}

.sidebar-title i {
    color: #0ea5e9;
}

.sidebar-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-list li {
    margin-bottom: 15px;
}

.sidebar-list a {
    text-decoration: none;
    display: block;
}

.sidebar-list .list-title {
    display: block;
    color: #1e293b;
    font-size: 0.95rem;
    margin-bottom: 5px;
    transition: color 0.3s ease;
}

.sidebar-list a:hover .list-title {
    color: #0ea5e9;
}

.sidebar-list .list-date {
    font-size: 0.85rem;
    color: #64748b;
}

.sidebar-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.sidebar-tags .tag {
    display: inline-block;
    padding: 6px 15px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 20px;
    color: #0ea5e9;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.sidebar-tags .tag:hover {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
}

.sidebar-download {
    text-align: center;
}

.sidebar-download p {
    color: #64748b;
    margin-bottom: 15px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    color: #ffffff;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: linear-gradient(135deg, #0284c7, #0891b2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
    color: #ffffff;
}

/* Footer */
.tech-footer {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    color: #ffffff;
}

.footer-main {
    padding: 60px 0;
}

.footer-brand {
    margin-bottom: 20px;
}

.footer-logo {
    height: 40px;
    margin-bottom: 15px;
}

.footer-brand h4 {
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-brand p {
    color: #94a3b8;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links h5 {
    font-weight: 600;
    margin-bottom: 20px;
    color: #ffffff;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #0ea5e9;
}

.footer-contact h5 {
    font-weight: 600;
    margin-bottom: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #94a3b8;
    margin-bottom: 10px;
}

.contact-item i {
    color: #0ea5e9;
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(14, 165, 233, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0ea5e9;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: #0ea5e9;
    color: #ffffff;
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    color: #64748b;
    margin: 0;
    font-size: 0.9rem;
}

.footer-legal {
    display: flex;
    gap: 15px;
    align-items: center;
}

.footer-legal a {
    color: #64748b;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-legal a:hover {
    color: #0ea5e9;
}

.footer-legal span {
    color: #475569;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

/* 响应式 */
@media (max-width: 991px) {
    .about-content {
        padding-left: 0;
        margin-top: 30px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .news-footer {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 767px) {
    .page-title {
        font-size: 2rem;
    }
    
    .player-controls {
        flex-wrap: wrap;
    }
    
    .player-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .stat-item {
        justify-content: center;
    }
    
    .formats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    [data-theme="videoplayer"] .hero-section {
        padding: 60px 0 40px;
    }
    
    [data-theme="videoplayer"] .hero-title {
        font-size: 2rem;
    }
    
    [data-theme="videoplayer"] .hero-content {
        text-align: center;
    }
    
    [data-theme="videoplayer"] .hero-actions {
        justify-content: center;
    }
    
    [data-theme="videoplayer"] .btn-hero-primary,
    [data-theme="videoplayer"] .btn-hero-secondary {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .player-visualizer {
        padding: 20px;
        margin-top: 30px;
    }
    
    .player-container {
        padding: 20px;
    }
    
    .play-button {
        width: 55px;
        height: 55px;
        font-size: 1.5rem;
    }
    
    .player-controls .control-btn {
        width: 38px;
        height: 38px;
        font-size: 1rem;
    }
    
    .player-controls .control-btn.play-control {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .stat-value {
        font-size: 1.1rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
}

[data-theme="videoplayer"] .hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

[data-theme="videoplayer"] .hero-particle {
    position: absolute;
    width: 7px;
    height: 7px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.4), rgba(6, 182, 212, 0.4));
    border-radius: 50%;
    animation: float-particle 15s infinite ease-in-out;
}

[data-theme="videoplayer"] .hero-particle:nth-child(1) { left: 7%; top: 17%; animation-delay: 0s; }
[data-theme="videoplayer"] .hero-particle:nth-child(2) { left: 17%; top: 77%; animation-delay: 1.875s; }
[data-theme="videoplayer"] .hero-particle:nth-child(3) { left: 57%; top: 37%; animation-delay: 3.75s; }
[data-theme="videoplayer"] .hero-particle:nth-child(4) { left: 77%; top: 67%; animation-delay: 5.625s; }
[data-theme="videoplayer"] .hero-particle:nth-child(5) { left: 27%; top: 27%; animation-delay: 7.5s; }
[data-theme="videoplayer"] .hero-particle:nth-child(6) { left: 67%; top: 77%; animation-delay: 9.375s; }
[data-theme="videoplayer"] .hero-particle:nth-child(7) { left: 47%; top: 47%; animation-delay: 11.25s; }
[data-theme="videoplayer"] .hero-particle:nth-child(8) { left: 87%; top: 17%; animation-delay: 13.125s; }

@keyframes float-particle {
    0%, 100% {
        transform: translate(0, 0) scale(1) rotate(0deg);
        opacity: 0.36;
    }
    25% {
        transform: translate(36px, -36px) scale(1.26) rotate(92deg);
        opacity: 0.66;
    }
    50% {
        transform: translate(-26px, 26px) scale(0.74) rotate(184deg);
        opacity: 0.46;
    }
    75% {
        transform: translate(16px, 16px) scale(1.14) rotate(276deg);
        opacity: 0.56;
    }
}

[data-theme="videoplayer"] .hero-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(14, 165, 233, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(14, 165, 233, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

[data-theme="videoplayer"] .feature-icon-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

[data-theme="videoplayer"] .feature-icon-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(6, 182, 212, 0.1));
    border-radius: 50%;
    animation: icon-pulse 2s ease-in-out infinite;
}

@keyframes icon-pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.3;
    }
}

[data-theme="videoplayer"] .download-bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

[data-theme="videoplayer"] .download-bg-animation::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

[data-theme="videoplayer"] .section-header {
    text-align: center;
    margin-bottom: 50px;
}

[data-theme="videoplayer"] .section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
}

[data-theme="videoplayer"] .section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
}

[data-theme="videoplayer"] .section-subtitle {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

[data-theme="videoplayer"] .features-section,
[data-theme="videoplayer"] .advantages-section,
[data-theme="videoplayer"] .steps-section,
[data-theme="videoplayer"] .support-section {
    padding: 80px 0;
}

[data-theme="videoplayer"] .download-section {
    padding: 60px 0;
}

[data-theme="videoplayer"] .download-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
}

[data-theme="videoplayer"] .download-desc {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

[data-theme="videoplayer"] .btn-download-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

@media (max-width: 576px) {
    [data-theme="videoplayer"] .section-title {
        font-size: 1.6rem;
    }
    
    [data-theme="videoplayer"] .section-subtitle {
        font-size: 0.95rem;
    }
    
    [data-theme="videoplayer"] .features-section,
    [data-theme="videoplayer"] .advantages-section,
    [data-theme="videoplayer"] .steps-section,
    [data-theme="videoplayer"] .support-section {
        padding: 50px 0;
    }
    
    [data-theme="videoplayer"] .download-title {
        font-size: 1.4rem;
    }
    
    [data-theme="videoplayer"] .download-desc {
        font-size: 0.9rem;
    }
    
    [data-theme="videoplayer"] .btn-download-primary {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .formats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 图标大小修复 */
[data-theme="videoplayer"] .feature-icon i {
    font-size: 1.5rem;
}

[data-theme="videoplayer"] .step-icon i {
    font-size: 1.75rem;
}

[data-theme="videoplayer"] .advantage-icon i {
    font-size: 1.75rem;
}

[data-theme="videoplayer"] .stat-icon i {
    font-size: 1.3rem;
}

/* 下载区块优化样式 */
[data-theme="videoplayer"] .download-card {
    background: linear-gradient(135deg, #0ea5e9, #06b6d4);
    border-radius: 24px;
    padding: 50px;
    box-shadow: 0 20px 60px rgba(14, 165, 233, 0.3);
    position: relative;
    overflow: hidden;
}

[data-theme="videoplayer"] .download-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

[data-theme="videoplayer"] .download-particle {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s infinite;
}

[data-theme="videoplayer"] .download-particle:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

[data-theme="videoplayer"] .download-particle:nth-child(2) {
    top: 20%;
    right: 15%;
    animation-delay: 5s;
}

[data-theme="videoplayer"] .download-particle:nth-child(3) {
    bottom: 20%;
    left: 20%;
    animation-delay: 10s;
}

[data-theme="videoplayer"] .download-particle:nth-child(4) {
    bottom: 30%;
    right: 10%;
    animation-delay: 15s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0;
    }
}

[data-theme="videoplayer"] .download-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

[data-theme="videoplayer"] .download-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 15px;
    line-height: 1.2;
}

[data-theme="videoplayer"] .download-desc {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    line-height: 1.6;
}

[data-theme="videoplayer"] .download-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

[data-theme="videoplayer"] .download-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="videoplayer"] .feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #ffffff;
    flex-shrink: 0;
}

[data-theme="videoplayer"] .feature-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 5px 0;
}

[data-theme="videoplayer"] .feature-content p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.4;
}

/* 下载按钮区域 */
[data-theme="videoplayer"] .download-action {
    text-align: center;
}

[data-theme="videoplayer"] .btn-download-primary {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 100%);
    color: #0ea5e9;
    padding: 20px 40px;
    border-radius: 16px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 10px 40px rgba(14, 165, 233, 0.3);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin-bottom: 25px;
    position: relative;
    overflow: hidden;
}

[data-theme="videoplayer"] .btn-download-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

[data-theme="videoplayer"] .btn-download-primary:hover::before {
    left: 100%;
}

[data-theme="videoplayer"] .btn-download-primary::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(14, 165, 233, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    z-index: 0;
}

[data-theme="videoplayer"] .btn-download-primary:hover::after {
    width: 300px;
    height: 300px;
}

[data-theme="videoplayer"] .btn-download-primary i {
    font-size: 1.75rem;
    position: relative;
    z-index: 2;
    animation: icon-pulse 2s ease-in-out infinite;
}

[data-theme="videoplayer"] .btn-download-primary:hover i {
    animation: icon-bounce 0.6s ease-in-out;
}

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

@keyframes icon-bounce {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.3) rotate(-10deg);
    }
    100% {
        transform: scale(1) rotate(0deg);
    }
}

[data-theme="videoplayer"] .btn-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    position: relative;
    z-index: 2;
}

[data-theme="videoplayer"] .btn-main {
    font-size: 1.2rem;
    font-weight: 700;
    transition: transform 0.3s ease;
}

[data-theme="videoplayer"] .btn-sub {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-top: 2px;
    transition: opacity 0.3s ease;
}

[data-theme="videoplayer"] .btn-download-primary:hover {
    background: linear-gradient(135deg, #ffffff 0%, #e0f2fe 100%);
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(14, 165, 233, 0.5);
}

[data-theme="videoplayer"] .btn-download-primary:hover .btn-main {
    transform: translateY(-2px);
}

[data-theme="videoplayer"] .btn-download-primary:hover .btn-sub {
    opacity: 1;
}

/* 下载信息 */
[data-theme="videoplayer"] .download-info {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 25px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="videoplayer"] .info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
}

[data-theme="videoplayer"] .info-item i {
    font-size: 1rem;
    color: #ffffff;
}

/* 保障承诺 */
[data-theme="videoplayer"] .download-guarantee {
    display: flex;
    justify-content: center;
    gap: 25px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="videoplayer"] .guarantee-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 500;
}

[data-theme="videoplayer"] .guarantee-item i {
    font-size: 1.1rem;
    color: #ffffff;
}

/* 响应式适配 */
@media (max-width: 991px) {
    [data-theme="videoplayer"] .download-card {
        padding: 40px 30px;
    }
    
    [data-theme="videoplayer"] .download-title {
        font-size: 1.8rem;
    }
    
    [data-theme="videoplayer"] .download-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    [data-theme="videoplayer"] .download-info {
        flex-wrap: wrap;
        gap: 15px;
    }
}

@media (max-width: 576px) {
    [data-theme="videoplayer"] .download-card {
        padding: 30px 20px;
    }
    
    [data-theme="videoplayer"] .download-title {
        font-size: 1.5rem;
    }
    
    [data-theme="videoplayer"] .download-desc {
        font-size: 0.95rem;
    }
    
    [data-theme="videoplayer"] .download-features {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    [data-theme="videoplayer"] .download-feature-item {
        padding: 12px;
    }
    
    [data-theme="videoplayer"] .feature-icon {
        width: 45px;
        height: 45px;
        font-size: 1.25rem;
    }
    
    [data-theme="videoplayer"] .btn-download-primary {
        width: 100%;
        justify-content: center;
        padding: 18px 30px;
        font-size: 1rem;
    }
    
    [data-theme="videoplayer"] .btn-content {
        align-items: center;
    }
    
    [data-theme="videoplayer"] .download-info {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    [data-theme="videoplayer"] .download-guarantee {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
}


/* downTop 顶部下载栏 */
.downTop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
    z-index: 9999;
    display: none;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.downTop.show {
    display: flex;
}

.downTop-logo {
    height: 36px;
    width: auto;
    margin-right: 12px;
}

.downTop-title {
    color: #1e293b;
    font-weight: 600;
    font-size: 1rem;
}

.downTopDowmload {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #ffffff !important;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.25);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.downTopDowmload:hover {
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.35);
    transform: translateY(-2px);
    color: #ffffff !important;
}

.downTopDowmload i {
    font-size: 1rem;
}

@media (max-width: 767px) {
    .downTop {
        height: 56px;
    }
    
    .downTop-logo {
        height: 28px;
    }
    
    .downTop-title {
        font-size: 0.875rem;
    }
    
    .downTopDowmload {
        padding: 8px 16px;
        font-size: 0.875rem;
    }
}