:root {
    --bg-main: #0b0c10;
    --bg-card: #15171e;
    --bg-card-hover: #1c1f28;
    --text-primary: #f0f2f5;
    --text-secondary: #9aa0ac;
    --accent-main: #7c4dff;
    --accent-gradient: linear-gradient(135deg, #7c4dff, #ff4d94);
    --accent-gradient-hover: linear-gradient(135deg, #9270ff, #ff70ab);
    --border-color: #262936;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.3s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* 基础样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.section-padding { padding: 80px 0; }
.section-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
}
.section-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 16px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    color: #fff;
}
.btn-primary {
    background: var(--accent-gradient);
}
.btn-primary:hover {
    background: var(--accent-gradient-hover);
    transform: translateY(-2px);
}
.btn-outline {
    background: transparent;
    border: 1px solid var(--accent-main);
    color: var(--text-primary);
}
.btn-outline:hover {
    background: rgba(124, 77, 255, 0.1);
}

/* 头部/首屏 */
.hero {
    position: relative;
    padding: 100px 0 60px;
    background: radial-gradient(circle at top right, rgba(124, 77, 255, 0.15), transparent 50%),
                radial-gradient(circle at bottom left, rgba(255, 77, 148, 0.1), transparent 50%);
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%; right: -20%;
    width: 800px; height: 800px;
    background: radial-gradient(circle, rgba(124,77,255,0.15) 0%, transparent 60%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
}
.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}
.logo-area img {
    height: 36px;
    border-radius: 8px;
}
.logo-area span {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 1px;
}
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    max-width: 800px;
}
.hero h1 span {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 40px;
}
.download-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}
.download-btn {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    min-width: 160px;
}
.download-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-main);
    transform: translateY(-3px);
}
.download-btn .os-name { font-size: 12px; color: var(--text-secondary); }
.download-btn .os-action { font-size: 16px; font-weight: 700; }

/* 视觉展示墙 */
.poster-wall {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-top: 60px;
    padding: 0 20px;
}
.poster-item {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    aspect-ratio: 3/4;
    background: #1a1c23;
}
.poster-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.poster-item:hover img {
    transform: scale(1.05);
}
.poster-item .poster-info {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 20px 12px 12px;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
}
.poster-item .poster-title {
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.poster-item .poster-meta {
    font-size: 12px;
    color: #ccc;
    margin-top: 4px;
}
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 10px;
    background: rgba(124, 77, 255, 0.2);
    color: #b388ff;
    margin-bottom: 6px;
}

/* 热播榜 */
.hot-list-section { background: #0e1015; }
.hot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 24px;
}
.hot-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}
.hot-card:hover {
    transform: translateY(-5px);
    border-color: rgba(124,77,255,0.5);
}
.hot-cover {
    position: relative;
    aspect-ratio: 3/4;
}
.hot-cover img {
    width: 100%; height: 100%; object-fit: cover;
}
.hot-rank {
    position: absolute;
    top: 10px; left: 10px;
    width: 28px; height: 28px;
    background: var(--accent-gradient);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 14px;
}
.hot-content {
    padding: 16px;
}
.hot-content h3 {
    font-size: 16px;
    margin-bottom: 8px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.hot-content p {
    font-size: 13px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 12px;
}
.hot-tags {
    display: flex; gap: 8px; flex-wrap: wrap;
}
.hot-tags span {
    font-size: 11px; padding: 2px 8px;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    color: #aaa;
}

/* 栏目双列布局 */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}
.split-content h2 {
    font-size: 28px;
    margin-bottom: 16px;
}
.split-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 16px;
}
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.feature-item {
    display: flex;
    gap: 16px;
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.feature-icon {
    width: 40px; height: 40px;
    border-radius: 10px;
    background: rgba(124,77,255,0.1);
    color: var(--accent-main);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 18px;
    flex-shrink: 0;
}
.feature-text h4 {
    font-size: 16px; margin-bottom: 4px;
}
.feature-text p {
    font-size: 13px; color: var(--text-secondary); margin-bottom: 0;
}

/* 安装步骤 */
.steps-section { background: #0e1015; }
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.step-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    position: relative;
    border: 1px solid var(--border-color);
}
.step-num {
    font-size: 36px;
    font-weight: 800;
    color: rgba(124,77,255,0.2);
    position: absolute;
    top: 10px; right: 20px;
    line-height: 1;
}
.step-card h3 {
    font-size: 18px; margin-bottom: 8px; position: relative; z-index: 1;
}
.step-card p {
    font-size: 14px; color: var(--text-secondary); position: relative; z-index: 1;
}

/* 常见问题 */
.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.faq-item {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.faq-q {
    font-size: 16px; font-weight: 700; margin-bottom: 12px; display: flex; gap: 8px;
}
.faq-q::before {
    content: 'Q'; color: var(--accent-main);
}
.faq-a {
    font-size: 14px; color: var(--text-secondary); display: flex; gap: 8px;
}
.faq-a::before {
    content: 'A'; color: var(--text-primary); font-weight: 700;
}

/* 用户热评 & 隐私安全 */
.dual-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}
.panel-title {
    font-size: 22px; margin-bottom: 24px; display: flex; align-items: center; gap: 8px;
}
.panel-title span {
    width: 4px; height: 20px; background: var(--accent-main); border-radius: 2px;
}
.review-list, .privacy-list {
    display: flex; flex-direction: column; gap: 16px;
}
.review-item {
    background: var(--bg-card);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent-main);
}
.review-user {
    display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
}
.review-user img { width: 24px; height: 24px; border-radius: 50%; }
.review-user span { font-size: 13px; color: var(--text-secondary); }
.review-text { font-size: 14px; color: var(--text-primary); }

.privacy-item {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.privacy-item h4 { font-size: 15px; margin-bottom: 8px; color: var(--accent-main); }
.privacy-item p { font-size: 13px; color: var(--text-secondary); }

/* 创作者计划 & 社区 */
.creator-section { background: #0e1015; }
.creator-banner {
    background: linear-gradient(135deg, rgba(124,77,255,0.1), rgba(255,77,148,0.1));
    border: 1px solid rgba(124,77,255,0.3);
    border-radius: var(--radius-lg);
    padding: 40px;
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 40px;
}
.creator-banner h3 { font-size: 24px; margin-bottom: 8px; }
.creator-banner p { color: var(--text-secondary); }
.creator-grid, .community-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.card-box {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.card-box h4 { font-size: 16px; margin-bottom: 8px; }
.card-box p { font-size: 13px; color: var(--text-secondary); }

/* 客户端下载 */
.final-download {
    text-align: center;
    padding: 80px 20px;
    background: radial-gradient(circle at center, rgba(124,77,255,0.15), transparent 70%);
    border-top: 1px solid var(--border-color);
}
.final-download h2 {
    font-size: 36px; margin-bottom: 16px;
}
.final-download p {
    color: var(--text-secondary); margin-bottom: 32px; font-size: 16px;
}
.final-download .download-group {
    margin-top: 40px;
}
.install-tips {
    margin-top: 40px;
    display: inline-flex;
    flex-direction: column;
    gap: 12px;
    text-align: left;
    background: rgba(0,0,0,0.3);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.install-tips p {
    font-size: 14px; margin: 0; color: var(--text-secondary);
}
.install-tips p strong { color: var(--text-primary); margin-right: 8px; }

/* 页脚 */
footer {
    background: var(--bg-main);
    padding: 40px 20px;
    text-align: center;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: #555;
}
footer p { margin-bottom: 8px; }
footer a {
    color: #666; transition: var(--transition);
}
footer a:hover { color: var(--text-secondary); }

/* 响应式 */
@media (max-width: 1024px) {
    .hero h1 { font-size: 36px; }
    .poster-wall { grid-template-columns: repeat(4, 1fr); }
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .creator-grid, .community-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .section-padding { padding: 50px 0; }
    .hero { padding: 60px 0 40px; }
    .hero h1 { font-size: 28px; }
    .hero-desc { font-size: 15px; }
    .poster-wall { 
        display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 16px; gap: 12px;
    }
    .poster-item { 
        flex: 0 0 160px; scroll-snap-align: start;
    }
    .poster-wall::-webkit-scrollbar { display: none; }
    .split-layout, .dual-panel, .faq-grid { grid-template-columns: 1fr; gap: 24px; }
    .steps-grid { grid-template-columns: 1fr; }
    .creator-grid, .community-grid { grid-template-columns: 1fr; }
    .creator-banner { flex-direction: column; text-align: center; gap: 20px; }
    .hot-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .download-group { flex-direction: column; width: 100%; max-width: 300px; margin: 0 auto; }
    .download-btn { width: 100%; }
    .final-download h2 { font-size: 28px; }
}