/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #a855f7;
    --primary-hover: #9333ea;
    --secondary-color: #ec4899;
    --bg-dark: #0a0a0f;
    --bg-card: #141418;
    --bg-card-hover: #1a1a20;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --border-color: #2a2a35;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #a855f7 50%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-3: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-4: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-5: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-6: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.5);
}

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

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

.btn-outline-light {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-large {
    padding: 14px 28px;
    font-size: 20px;
    border-radius: var(--radius-lg);
}

.btn-icon {
    width: 26px;
    height: 26px;
}

/* 导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 48px;
    height: 48px;
}
.logo-icon img {
	width:100%;
}


.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 17px;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-1);
    border-radius: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-selector {
    position: relative;
}

/* 语言下拉框样式 */
.lang-dropdown {
    position: relative;
}

.lang-trigger {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    min-width: 140px;
}

.lang-trigger:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
}

.lang-dropdown.active .lang-trigger {
    border-color: var(--primary-color);
    background: rgba(168, 85, 247, 0.1);
}

.lang-current {
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.lang-arrow {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
    transition: transform 0.3s ease;
    margin-left: auto;
}

.lang-dropdown.active .lang-arrow {
    transform: rotate(180deg);
    color: var(--primary-color);
}

/* 下拉菜单 */
.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    max-height: 320px;
    overflow-y: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.lang-dropdown.active .lang-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 滚动条美化 */
.lang-dropdown-menu::-webkit-scrollbar {
    width: 6px;
}

.lang-dropdown-menu::-webkit-scrollbar-track {
    background: transparent;
    border-radius: 3px;
}

.lang-dropdown-menu::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.lang-dropdown-menu::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 语言选项 */
.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lang-option:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lang-option.active {
    background: rgba(168, 85, 247, 0.2);
}

.lang-option.active .lang-name {
    color: var(--primary-color);
    font-weight: 500;
}

.lang-flag {
    font-size: 18px;
    line-height: 1;
}

.lang-name {
    font-size: 14px;
    color: var(--text-primary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

/* 移动端菜单默认隐藏 */
.mobile-menu {
    display: none;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.5;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--primary-color);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary-color);
    bottom: -100px;
    left: -100px;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: #667eea;
    top: 50%;
    left: 30%;
    opacity: 0.3;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: 100px;
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 24px;
}

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

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.6;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 35px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 16px;
    color: var(--text-secondary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(255,255,255,.6) 50%, rgba(255,255,255,0) 100%);;
}

/* 编辑器预览 */
.hero-visual {
    display: flex;
    justify-content: center;
}
.hero-visual img {
	width:100%;
}

.editor-preview {
    width: 100%;
    max-width: 600px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
}

.window-controls {
    display: flex;
    gap: 8px;
}

.window-controls span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.window-controls span:nth-child(1) { background: #ff5f57; }
.window-controls span:nth-child(2) { background: #febc2e; }
.window-controls span:nth-child(3) { background: #28c840; }

.preview-title {
    font-size: 13px;
    color: var(--text-secondary);
    flex: 1;
    text-align: center;
}

.preview-body {
    display: flex;
    height: 350px;
}

.preview-sidebar {
    width: 60px;
    background: rgba(255, 255, 255, 0.02);
    border-right: 1px solid var(--border-color);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sidebar-item {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--bg-card-hover);
    cursor: pointer;
    transition: all 0.3s ease;
}

.sidebar-item.active,
.sidebar-item:hover {
    background: var(--primary-color);
}

.preview-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.preview-video {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a25 0%, #0f0f15 100%);
}

.video-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.video-placeholder:hover {
    transform: scale(1.1);
}

.video-placeholder svg {
    width: 32px;
    height: 32px;
    color: white;
    margin-left: 4px;
}

.preview-timeline {
    height: 100px;
    background: rgba(255, 255, 255, 0.02);
    border-top: 1px solid var(--border-color);
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.timeline-track {
    height: 24px;
    background: var(--bg-card-hover);
    border-radius: 4px;
    position: relative;
}

.timeline-track::after {
    content: '';
    position: absolute;
    left: 20%;
    top: 0;
    bottom: 0;
    width: 40%;
    background: var(--gradient-1);
    border-radius: 4px;
}

/* 通用区域样式 */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header.light {
    color: var(--text-primary);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.2);
    border-radius: 100px;
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 16px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* AI功能特性 */
.features {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, #0d0d12 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    aspect-ratio: 4/3;
}

.feature-card.large {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: auto;
}

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

.feature-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.feature-bg img {
	width:100%;
}

.feature-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.4) 50%, rgba(0,0,0,0.2) 100%);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.5) 60%, rgba(0,0,0,0.3) 100%);
}

.feature-content {
    position: relative;
    z-index: 2;
    padding: 32px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: white;
}

.feature-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.8);
    line-height: 1.7;
}

.feature-preview {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.preview-bubble {
    padding: 12px 20px;
    background: var(--bg-card-hover);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-secondary);
}

.preview-bubble.highlight {
    background: var(--gradient-1);
    color: white;
}

.preview-arrow {
    font-size: 20px;
    color: var(--text-muted);
}

/* SVG渐变定义 */
svg defs {
    display: none;
}

/* 专业剪辑功能 */
.pro-features {
    padding: 120px 0;
    background: linear-gradient(180deg, #0d0d12 0%, var(--bg-dark) 100%);
}

.pro-features-content {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.pro-feature-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.pro-feature-item.reverse {
    direction: rtl;
}

.pro-feature-item.reverse > * {
    direction: ltr;
}

.pro-feature-text h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pro-feature-text p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: rgba(67, 233, 123, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #43e97b;
    font-size: 12px;
}

.pro-feature-visual {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
}
.pro-feature-visual img {
	width:100%;
}

/* 时间线演示 */
.timeline-demo {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.track {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 40px;
}

.track-label {
    width: 60px;
    font-size: 12px;
    color: var(--text-muted);
    text-align: right;
}

.track-content {
    flex: 1;
    height: 100%;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.clip {
    position: absolute;
    height: 100%;
    background: var(--gradient-1);
    border-radius: var(--radius-sm);
}

.clip:nth-child(1) { left: 0; width: 30%; }
.clip:nth-child(2) { left: 35%; width: 25%; }
.clip.audio { left: 5%; width: 50%; background: var(--gradient-4); }
.clip.text { left: 10%; width: 20%; background: var(--gradient-3); }

/* 关键帧演示 */
.keyframe-demo {
    position: relative;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.keyframe-box {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: var(--radius-md);
    position: relative;
    z-index: 2;
}

.keyframe-path {
    position: absolute;
    width: 150px;
    height: 100px;
    border: 2px dashed rgba(168, 85, 247, 0.3);
    border-radius: 50%;
}

.keyframe-point {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    border: 2px solid white;
}

.keyframe-point.start { top: -6px; left: 50%; transform: translateX(-50%); }
.keyframe-point.end { bottom: -6px; left: 50%; transform: translateX(-50%); }

/* 基础视频剪辑工具 */
.basic-tools {
    padding: 120px 0;
    background: linear-gradient(180deg, #0d0d12 0%, var(--bg-dark) 100%);
}

.basic-tools-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
}

.tools-tabs {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 48px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(129,109,239,.6);
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.tab-item::after {
    content: '';
    position: absolute;
    bottom: -17px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--gradient-1);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.tab-item.active::after,
.tab-item:hover::after {
    width: 100%;
}

.tab-item.active span,
.tab-item:hover span {
    color: var(--primary-color);
}

.tab-icon {
    width: 72px;
    height: 72px;
	background: linear-gradient(135deg, #2a2a35 0%, #1a1a25 100%);
	border-radius: 10px;
	display:flex;
	justify-content: center;
	align-items:center;
}
.tab-icon img {
	width:64%;
}

.tab-item span {
    font-size: 18px;
	font-weight: bold;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.tools-content {
    position: relative;
    min-height: 520px;
}

.tools-panel {
    display: none;
    grid-template-columns: 380px 1fr;
    gap: 40px;
    margin: 0 auto;
    animation: fadeIn 0.4s ease;
}

.tools-panel.active {
    display: grid;
}

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

.tools-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
	min-height: 100px;
	display: flex;
	justify-content: center;
	flex-direction: column;
}

.tool-card:hover,
.tool-card.active {
    background: rgba(168, 85, 247, 0.05);
    border-color: rgba(168, 85, 247, 0.3);
}

.tool-card.active {
    padding: 20px 24px;
	min-height: 180px;
}

.tool-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tool-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
    color: var(--text-muted);
    transition: all 0.3s ease;
}

.tool-card.active .tool-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    color: var(--primary-color);
}

.tool-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    transition: all 0.3s ease;
}

.tool-card.active h3 {
    font-size: 20px;
}

.tool-desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    margin: 0;
}

.tool-card.active .tool-desc {
    max-height: 120px;
    opacity: 1;
    margin-top: 12px;
}

.tools-preview {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
}

.preview-video-player {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.video-content {
    flex: 1;
    background: linear-gradient(135deg, #1a1a25 0%, #0f0f15 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 280px;
}

.speed-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: white;
    font-size: 48px;
    font-weight: 700;
	position: absolute;
	background: rgba(0,0,0,.4);
	padding:20px;
	border-radius: 20px;
}

.speed-indicator svg {
    width: 50px;
    height: 40px;
}

.video-timeline {
    background: #1a1a20;
    padding: 16px;
}

.timeline-ruler {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 12px;
    padding: 0 4px;
}

.timeline-thumbnails {
    display: flex;
    gap: 4px;
}

.timeline-thumbnails .thumb {
    flex: 1;
    height: 50px;
    background: linear-gradient(135deg, #2a2a35 0%, #1a1a25 100%);
    border-radius: 4px;
    position: relative;
}
.timeline-thumbnails .thumb img {
	width:100%;
	height: 100%;
}

.tools-action {
    text-align: center;
    margin-top: 48px;
}

.tools-action .btn {
    min-width: 200px;
}

.video-picline {
	display: flex;
	gap:4px;
	background: #1a1a20;
    padding: 16px;
}
.picline_item {
	display:flex;
	gap:4px;
	flex:1;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}
.picline_item span {
	font-size:13px;
	color: var(--text-muted);
}
.picline_item .anopic {
	width:100%;
	display:flex;
	justify-content: center;
	align-items: center;
    height: 50px;
    background: linear-gradient(135deg, #2a2a35 0%, #1a1a25 100%);
    border-radius: 4px;
    position: relative;
}

.picline_item .anopic img {
	width:auto!important;
	height:70%!important;
}

/* SVG渐变定义 - 工具图标 */
#tool-gradient-1 { --gradient-color: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
#tool-gradient-2 { --gradient-color: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
#tool-gradient-3 { --gradient-color: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
#tool-gradient-4 { --gradient-color: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
#tool-gradient-5 { --gradient-color: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
#tool-gradient-6 { --gradient-color: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }

/* 下载区域 */
.download {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, #0a0a12 100%);
}

/* 创作场景 */
.scenarios {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, #0a0a12 100%);
}

.scenarios-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 64px;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.scenario-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    aspect-ratio: 3/4;
}

.scenario-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.scenario-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.scenario-image img {
	width:100%;
}

.scenario-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.3) 50%, transparent 100%);
    transition: all 0.3s ease;
}

.scenario-card:hover .scenario-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 60%, transparent 100%);
}

.scenario-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px 20px;
    text-align: center;
    z-index: 2;
}

.scenario-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 8px;
}

.scenario-content p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
}

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

.download-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 16px;
}

.download-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 60px 32px;
    text-align: center;
    transition: all 0.3s ease;
}

.download-card:hover {
    transform: translateY(-4px);
    border-color: rgba(168, 85, 247, 0.3);
    box-shadow: var(--shadow-md);
}

.download-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
}

.download-icon img {
	width:100%;
}

.download-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
}

.download-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.download-card  .btn {
	font-size:20px;
	padding:10px 30px;
	border-radius: 30px;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: #050508;
    border-top: 1px solid var(--border-color);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 多语言展示 */
.languages-showcase {
    padding: 100px 0;
    background: linear-gradient(180deg, #0a0a12 0%, var(--bg-dark) 100%);
}

.languages-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.languages-desc {
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 48px;
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 16px;
}

.language-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    cursor: pointer;
}

.language-item:hover {
    transform: translateY(-4px);
    border-color: rgba(168, 85, 247, 0.3);
    box-shadow: var(--shadow-md);
}

.lang-name {
    font-size: 15px;
    color: var(--text-secondary);
    text-align: center;
    transition: color 0.3s ease;
}

/* 当前语言高亮 - 天蓝到浅粉渐变 */
.language-item.active {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.2) 0%, rgba(240, 147, 251, 0.2) 100%);
    border-color: #4facfe;
    box-shadow: 0 0 20px rgba(79, 172, 254, 0.3);
}

.language-item.active .lang-name {
    color: #4facfe;
    font-weight: 600;
}

/* 鼠标经过高亮 - 淡紫色 */
.language-item:hover {
    background: rgba(168, 85, 247, 0.1);
    border-color: rgba(168, 85, 247, 0.5);
    box-shadow: 0 0 15px rgba(168, 85, 247, 0.2);
}

.language-item:hover .lang-name {
    color: var(--text-primary);
}

/* 当前语言鼠标经过效果 */
.language-item.active:hover {
    background: linear-gradient(135deg, rgba(79, 172, 254, 0.25) 0%, rgba(240, 147, 251, 0.25) 100%);
    border-color: #4facfe;
    box-shadow: 0 0 25px rgba(79, 172, 254, 0.4);
}

.footer-main {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-1);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.4);
}
.back-to-top img {
	width:70%;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 24px rgba(168, 85, 247, 0.5);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    color: white;
}

.footer-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-top: 16px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-muted);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content:space-around;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .editor-preview {
        max-width: 500px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-card.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .pro-feature-item {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .pro-feature-item.reverse {
        direction: ltr;
    }
    
    .pro-feature-visual {
        order: -1;
    }
}

@media (max-width: 992px) {
    .nav {
        display: none;
    }
    
    .header-actions {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 42px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        aspect-ratio: auto;
        min-height: 280px;
    }
    
    .feature-card.large {
        grid-column: span 1;
        min-height: 360px;
    }
    
    .download-options {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
	.feature-bg img {
		width:100%;
		height:100%;
	}
    .lang-selector {
        display: none;
    }
    
    .hero {
        padding: 100px 16px 60px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-large {
        width: 100%;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 16px;
    }
    
    .stat-divider {
        display: none;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    /* 移动端导航菜单 */
    .mobile-menu {
        display: none;
		height:100vh!important;
    }
	
	.mobile-nav {
		width:100%;
		display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
	}
    
    .mobile-menu .nav-link {
        font-size: 18px;
        padding: 5px 0;
        font-weight: 500;
        color: white;
    }
    
    .mobile-menu .nav-link.active::after {
        display: none;
    }
    
    .mobile-lang-select {
        width: 100%;
    }
    
    .mobile-lang-dropdown {
        width: 100%;
        position: relative;
    }
    
    .mobile-lang-dropdown .lang-trigger {
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        width: 100%;
        justify-content: space-between;
        padding: 14px 16px;
        font-size: 16px;
    }
    
    .mobile-lang-dropdown .lang-dropdown-menu {
        position: absolute;
        top: calc(100% + 8px);
        left: 0;
        right: 0;
        width: 100%;
        max-height: 280px;
        overflow-y: auto;
        border-radius: 12px;
        padding: 8px;
        transform: translateY(-10px);
        z-index: 1001;
        -webkit-overflow-scrolling: touch;
    }
    
    .mobile-lang-dropdown.active .lang-dropdown-menu {
        transform: translateY(0);
    }
    
    .mobile-lang-dropdown .lang-option {
        padding: 14px 16px;
        font-size: 16px;
    }
    
    .mobile-lang-dropdown .lang-flag {
        font-size: 22px;
    }
    
    .mobile-lang-dropdown .lang-name {
        font-size: 16px;
    }
    
    /* 移动端语言下拉遮罩 */
    .lang-dropdown-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
    }
    
    .lang-dropdown-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu .btn-full {
        width: 100%;
        width: 100%;
    }
    
    .features,
    .pro-features,
    .basic-tools,
    .download {
        padding: 50px 0;
    }
	.scenarios {
		padding:50px 0;
	}

    .feature-content {
        padding: 24px;
    }
    
    .feature-preview {
        flex-direction: column;
        gap: 12px;
        padding: 16px;
    }
    
    .preview-arrow {
        transform: rotate(90deg);
    }
    
    .pro-feature-text h3 {
        font-size: 24px;
    }
	.download-card {
		padding:20px;
	}
	.download-icon {
		margin:0 auto 10px auto;
		width:56px;
		height: 56px;
	}
	.download-card h3 {
		margin-bottom:15px;
	}
    
    .footer-links {
        grid-template-columns: 1fr;
		display:none;
    }
	.feature-card, .feature-card.large {
		min-height:inherit;
	}
	.footer {
		padding:30px 0;
	}
	.footer-main {
		margin-bottom:20px;
	}
	.footer-bottom {
		border-top: 1px solid rgba(255,255,255,.1);
		padding-top: 20px;
	}
	.languages-showcase {
		padding:60px 0;
	}
	.back-to-top {
		right:10px;
	}
}

@media (max-width: 1200px) {
    .scenarios-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .languages-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

@media (max-width: 992px) {
    .tools-content {
        min-height: 680px;
    }
    
    .tools-panel,
    .tools-panel.active {
        grid-template-columns: 1fr;
    }
    
    .tools-tabs {
        gap: 24px;
        flex-wrap: wrap;
    }
    
    .languages-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tab-item span {
        font-size: 15px;
    }
    
    .basic-tools-title {
        font-size: 32px;
    }
    
    .scenarios-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scenarios-title {
        font-size: 32px;
    }
}

@media (max-width: 768px) {
    .tools-tabs {
        gap: 15px;
    }
    
    .tab-icon {
        width: 48px;
        height: 48px;
    }
    
    .tools-list {
        order: 1;
    }
    
    .tools-preview {
        order: 1;
        min-height: 300px;
    }
    
    .tool-card {
        padding: 16px 20px;
    }
    
    .tool-icon {
        width: 32px;
        height: 32px;
        min-width: 32px;
    }
    
    .tool-card.active .tool-icon {
        width: 32px;
        height: 32px;
        min-width: 32px;
    }
   
	.scenario-card {
		aspect-ratio: 4 / 3;
	}
    
    .tool-card-header {
        gap: 10px;
    }
    
    .video-content {
        min-height: 200px;
    }
    
    .speed-indicator {
        font-size: 32px;
    }
    
    .speed-indicator svg {
        width: 28px;
        height: 28px;
    }
    
    /* 移动端 video-timeline 优化 */
    .video-timeline {
        padding: 12px;
    }
    
    .timeline-ruler {
        font-size: 10px;
        margin-bottom: 8px;
        overflow-x: auto;
        white-space: nowrap;
        gap: 8px;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .timeline-ruler::-webkit-scrollbar {
        display: none;
    }
    
    .timeline-ruler span {
        flex-shrink: 0;
    }
    
    .timeline-thumbnails {
        gap: 3px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 4px;
    }
    
    .timeline-thumbnails::-webkit-scrollbar {
        display: none;
    }
    
    .timeline-thumbnails .thumb {
        flex: 0 0 auto;
        width: 60px;
        height: 36px;
        min-width: 60px;
    }
    
    /* 移动端 video-picline 优化 */
    .video-picline {
        padding: 12px;
        gap: 8px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }
    
    .video-picline::-webkit-scrollbar {
        display: none;
    }
    
    .picline_item {
        flex: 0 0 auto;
        min-width: 70px;
        gap: 6px;
    }
    
    .picline_item span {
        font-size: 11px;
    }
    
    .picline_item .anopic {
        height: 40px;
        width: 70px;
    }
    
    .picline_item .anopic img {
        height: 60% !important;
    }
	.footer .logo {
		align-items:center;
		justify-content: center;
	}
}

@media (max-width: 640px) {
    .scenarios-grid {
        grid-template-columns: 1fr;
        max-width: 320px;
        margin: 0 auto;
    }
    
    .languages-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .languages-title {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .stat-number {
        font-size: 22px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .download-title {
        font-size: 28px;
    }
    
    .basic-tools-title {
        font-size: 24px;
    }
    
    .scenarios-title {
        font-size: 24px;
    }
    
    .languages-title {
        font-size: 24px;
    }
    
    .languages-desc {
        font-size: 15px;
    }
}

/* 移动端多语言展开/收起 */
@media (max-width: 640px) {
    .languages-grid {
        max-height: 170px;
        overflow: hidden;
        transition: max-height 0.4s ease;
    }
    
    .languages-grid.expanded {
        max-height: 1000px;
    }
    
    .language-item {
        padding: 10px 8px;
    }
    
    .lang-flag {
        font-size: 24px;
    }
    
    .lang-name {
        font-size: 13px;
    }
    
    .languages-toggle-btn {
        display: block;
        margin: 20px auto 0;
        padding: 10px 24px;
        background: transparent;
        border: 1px solid var(--border-color);
        border-radius: 20px;
        color: var(--text-secondary);
        font-size: 14px;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .languages-toggle-btn:hover {
        border-color: var(--primary-color);
        color: var(--primary-color);
    }
}

@media (min-width: 641px) {
    .languages-toggle-btn {
        display: none;
    }
}