/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #007bff;
    --secondary-color: #4da3ff;
    --accent-color: #66b3ff;
    --dark-color: #f8f9fa;
    --dark-light: #e9ecef;
    --light-color: #ffffff;
    --text-color: #1a365d;
    --text-secondary: #4a5568;
    --border-color: #dee2e6;
    --card-bg: rgba(255, 255, 255, 0.9);
    --gradient-primary: linear-gradient(135deg, #007bff, #66b3ff);
    --gradient-secondary: linear-gradient(135deg, #f8f9fa, #e9ecef);
    --shadow-primary: 0 0 20px rgba(0, 123, 255, 0.2);
    --shadow-secondary: 0 0 40px rgba(102, 179, 255, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(102, 179, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(102, 179, 255, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(102, 179, 255, 0.05) 0%, transparent 30%);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 123, 255, 0.2);
    padding: 1rem 0;
    transition: var(--transition);
	box-shadow: 0 0 10px rgba(0, 123, 255, 0.2);
	background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-color);
}

.logo-icon {
    animation: pulse 2s infinite;
	width:3rem;
	height:3rem;
	display: block;
}

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

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

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    position: relative;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

/* 按钮样式 */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--light-color);
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
	font-size:1.0rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: transparent;
    color:#0F83FF;
    border: 1px solid #0F83FF;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background-color: rgba(0, 212, 255, 0.1);
    box-shadow: var(--shadow-secondary);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 0.3rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* 区域样式 */
.hero {
    
    background: linear-gradient(135deg, #e3f2fd, #f3e5f5, #e3f2fd);
}
.hero_back {
	background:url(../images/banner_bg.png) no-repeat center bottom;
	background-size:100% auto;
	position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
}
.ring-container {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  position:absolute;
	z-index: 1;
}

.ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 1px solid transparent;
  border-top-color:rgba(0,240,255,.5);
  border-bottom-color: rgba(0,240,255,.5);
  animation: rotate 9s linear infinite;
}

.ring:nth-child(2) {
  width: 80%;
  height: 80%;
  animation: rotate 6s linear infinite reverse;
  border-top-color: rgba(95,207,63,.5);
  border-bottom-color: rgba(253,166,59,.5);
}

.ring:nth-child(3) {
  width: 40%;
  height: 40%;
  animation: rotate 4s linear infinite;
  border-left-color: rgba(236,71,69,.5);
  border-right-color: rgba(0,240,255,.5);
  border-top-color: transparent;
  border-bottom-color: transparent;
}

@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}





/* 科技线条动画 */
@keyframes gridMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 100px 100px;
    }
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
	position: relative;
	z-index: 11;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.hero-buttons .btn-primary, .hero-buttons .btn-secondary {
	font-size:1.4rem;
	padding:0.8rem 2.0rem;
}

.hero-buttons .btn-primary {
	display:flex;
	justify-content: center;
	align-items: center;
	gap:0.5rem;
}
.hero-buttons .btn-primary i {
	display:block;
	width:1.8rem;
	height:1.8rem;
}
.hero-buttons .btn-primary i img {
	width:100%;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
    padding: 1rem 2rem;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 123, 255, 0.2);
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary);
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    display: block;
    font-size: 1.0rem;
    color: var(--text-secondary);
}


.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.app-preview {
    position: relative;
    z-index: 1;
    animation: float 6s ease-in-out infinite;
	max-width: 100%;
}
.app-preview img {
	width:100%;
}

.app-window {
    width: 400px;
    height: 300px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-secondary);
    border: 1px solid rgba(0, 123, 255, 0.3);
}

.window-header {
    background-color: rgba(10, 17, 40, 0.9);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid rgba(0, 123, 255, 0.2);
}

.window-controls {
    display: flex;
    gap: 0.5rem;
}

.control-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--text-secondary);
}

.window-title {
    font-size: 0.9rem;
    color: var(--text-color);
}

.window-content {
    padding: 1rem;
    height: calc(100% - 50px);
}

.app-interface {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 1rem;
    height: 100%;
}

.interface-sidebar {
    background-color: rgba(10, 17, 40, 0.6);
    border-radius: var(--border-radius);
    padding: 0.5rem;
}

.sidebar-item {
    padding: 0.5rem;
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

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

.sidebar-item:hover:not(.active) {
    background-color: rgba(0, 123, 255, 0.1);
    color: var(--text-color);
}

.interface-main {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.file-list {
    flex: 1;
    background-color: rgba(10, 17, 40, 0.6);
    border-radius: var(--border-radius);
    padding: 1rem;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    margin-bottom: 0.5rem;
}

.file-item:hover {
    background-color: rgba(0, 123, 255, 0.1);
}

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

.file-name {
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-color);
}

.file-size {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.compress-controls {
    display: flex;
    justify-content: flex-end;
}

.compress-btn {
    background: var(--gradient-primary);
    color: var(--light-color);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.compress-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

/* 通用部分样式 */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1a365d, #007bff, #1a365d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 3px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 功能介绍样式 */
.features {
    padding: 8rem 0;
    position: relative;
    background-color: var(--dark-color);
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(102, 179, 255, 0.2) 0%, transparent 30%),
        radial-gradient(circle at 80% 50%, rgba(102, 179, 255, 0.2) 0%, transparent 30%);
    z-index: 0;
}

.features .container {
    position: relative;
    z-index: 1;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.feature-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid rgba(0, 123, 255, 0.2);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
}

.feature-card.animate {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin:0 auto 1.5rem auto;
    color: var(--light-color);
    font-size: 1.5rem;
    transition: var(--transition);
}
.feature-icon img {
	width:60%;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-primary);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
	text-align: center;
}

.feature-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 极速解压样式 */
.speed-feature {
    padding: 8rem 0;
    position: relative;
    background-color: var(--light-color);
}

.speed-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(102, 179, 255, 0.2) 0%, transparent 30%),
        radial-gradient(circle at 80% 50%, rgba(102, 179, 255, 0.2) 0%, transparent 30%);
    z-index: 0;
}

.speed-feature .container {
    position: relative;
    z-index: 1;
}

.speed-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.speed-info {
    padding: 2rem;
}

.speed-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.speed-stat {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 123, 255, 0.2);
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
    flex: 1;
}

.speed-number {
	width:90px;
	height:90px;
	border-radius: 50%;
	border: 2px solid rgba(0,153,255,.5);
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin:0 auto 0.6rem auto;
	display: flex;
	justify-content: center;
	align-items: center;
}

.speed-label {
    display: block;
    font-size: 1.0rem;
    color: var(--text-secondary);
}

.speed-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 2rem;
}

.speed-visual {
    display: flex;
    justify-content: center;
    align-items: center;
	max-width: 100%；
}
.speed-visual img {
	width:100%;
}

.speed-animation {
    position: relative;
}

.speed-feature .btn-primary, .format-content .btn-primary {
	display:flex;
	justify-content: center;
	align-items: center;
	font-size:1.2rem;
	gap:0.5rem;
}
.speed-feature .btn-primary i, .format-content .btn-primary i {
	display:block;
	width:1.8rem;
	height:1.8rem;
}
.speed-feature .btn-primary i img,.format-content .btn-primary i img {
	width:100%;
}

.progress-ring {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.progress-text {
    position: absolute;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* 42+格式全兼容样式 */
.format-support {
    padding: 8rem 0 0 0;
    position: relative;
    background-color: var(--dark-color);
}

.format-support::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 30% 30%, rgba(102, 179, 255, 0.2) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(102, 179, 255, 0.2) 0%, transparent 30%);
    z-index: 0;
}

.format-support .container {
    position: relative;
    z-index: 1;
}

.format-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
	margin-bottom: 3rem;
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.format-item {
    padding: 1.5rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 123, 255, 0.2);
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
}

.format-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.format-info {
    padding: 2rem;
}

.format-info p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 2rem;
}

.imgpic img {
	width:100%;
	hegiht:100%;
	vertical-align: bottom;
}


/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    background: var(--gradient-primary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: var(--transition);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
}
.back-to-top img {
	width:70%;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.3);
}

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


/* 优势展示样式 */
.advantages {
    padding: 8rem 0;
    position: relative;
    background: var(--gradient-secondary);
}

.advantages::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 50% 50%, rgba(102, 179, 255, 0.2) 0%, transparent 40%);
    z-index: 0;
}

.advantages .container {
    position: relative;
    z-index: 1;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.advantage-item {
    position: relative;
    padding: 2rem;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 123, 255, 0.2);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
}

.advantage-item.animate {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.advantage-number {
    position: absolute;
    top: -30px;
    left: 50%;
	margin-left: -30px;
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-color);
    font-weight: 700;
    font-size: 1.4rem;
}
.advantage-pic {
	width:80px;
	height:80px;
	margin:1rem auto 0 auto;
	display:flex;
	justify-content: center;
	align-items: center;
}
.advantage-pic img {
	width:80%;
}

.advantage-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    margin-top: 1rem;
	text-align: center;
}

.advantage-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 2;
}

/* 下载区域样式 */
.download {
    padding: 8rem 0;
    position: relative;
    background-color: var(--dark-color);
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 30% 30%, rgba(102, 179, 255, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 70% 70%, rgba(102, 179, 255, 0.1) 0%, transparent 30%);
    z-index: 0;
}

.download .container {
    position: relative;
    z-index: 1;
}

.download-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 4rem;
    text-align: center;
    border: 1px solid rgba(0, 123, 255, 0.2);
    box-shadow: 0 2px 20px rgba(0, 123, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.download-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.download-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
	background: linear-gradient(135deg, #1a365d, #007bff, #1a365d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.download-btn[hidden] {
    display: none !important;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-color);
    border: 1px solid rgba(0, 123, 255, 0.2);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 180px;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
    background-color: rgba(255, 255, 255, 1);
}

.download-btn .btn-icon {
    font-size: 1.5rem;
	display: block;
	width: 4.0rem;
	height:4.0rem;
}

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

.download-btn .btn-label {
    display: block;
    font-size: 1rem;
    font-weight: 700;
}

.download-btn .btn-version {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
	align-items: center;
}

.download-info p {
    color: var(--text-secondary);
    font-size: 1.0rem;
	display: flex;
	justify-content: center;
	gap:0.5rem;
}

.download-info i {
	display:block;
	width:1.4rem;
	height:1.4rem;
}

.download-info i img {
	width:100%;
}

.btn-down {
	width:2.2rem;
	height: 2.2rem;
}
.btn-down img {
	width:100%;
}

/* 常见问题样式 */
.faq {
    padding: 8rem 0;
    position: relative;
    background: var(--gradient-secondary);
}

.faq::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 50% 20%, rgba(102, 179, 255, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 50% 80%, rgba(102, 179, 255, 0.1) 0%, transparent 30%);
    z-index: 0;
}

.faq .container {
    position: relative;
    z-index: 1;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid rgba(0, 123, 255, 0.2);
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    box-shadow: 0 2px 10px rgba(0, 123, 255, 0.1);
}

.faq-item.animate {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.9);
}

.faq-question:hover {
    background-color: rgba(255, 255, 255, 1);
}

.faq-question span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
    flex: 1;
}

.faq-question svg {
    color: var(--accent-color);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-question svg.active {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    background-color: rgba(255, 255, 255, 0.95);
}

.faq-answer.active {
    padding: 0 1.5rem 1.5rem;
    max-height: 200px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 多语言选择样式 */
.language-selector {
    margin-left: 1rem;
}

.language-dropdown,
.language-more-dropdown {
    background-color: rgba(255, 255, 255, 0.95);
    color: var(--text-color);
    border: 1px solid rgba(0, 123, 255, 0.3);
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    min-width: 180px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23007bff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 16px;
}

.language-dropdown:hover,
.language-more-dropdown:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(0, 123, 255, 0.3);
    transform: translateY(-1px);
}

.language-dropdown:focus,
.language-more-dropdown:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.language-more {
    margin-left: 0.5rem;
	font-size:1.1rem;
}

.language-more .language-more-dropdown {
	font-size:1.1rem;
	padding: 0.9rem 2.6rem 0.9rem 1.25rem;
}

/* 多语言选择版块样式 */
.language-section {
    padding: 6rem 0;
    position: relative;
	background: url(../images/e5.png) no-repeat center #eff5fb;
	background-size:auto 110%; 
}

.language-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 50% 50%, rgba(102, 179, 255, 0.1) 0%, transparent 30%);
    z-index: 0;
}

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

.language-title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #1a365d, #007bff, #1a365d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
}

.language-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.language-btn {
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-color);
    border: 1px solid rgba(0, 123, 255, 0.2);
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-width: 150px;
	font-size:1.1rem;
}


.language-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.language-btn.active {
    background: var(--gradient-primary);
    color: var(--light-color);
    border-color: var(--primary-color);
}

/* 页脚样式 */
.footer {
    background-color: var(--light-color);
    border-top: 1px solid rgba(0, 123, 255, 0.2);
    padding: 4rem 0 2rem;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-color);
    margin-bottom: 1rem;
}

.brand-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 400px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-friend-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem 1.25rem;
}

.footer-friend-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
    white-space: nowrap;
}

.footer-friend-links a:hover {
    color: var(--accent-color);
}

.link-group h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
	background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.link-group h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.link-group ul {
    list-style: none;
}

.link-group ul li {
    margin-bottom: 0.75rem;
}

.link-group ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.link-group ul li a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 123, 255, 0.1);
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.social-link:hover {
    color: var(--accent-color);
}

/* 动画效果 */
@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
    100% {
        transform: translateY(0px);
    }
}

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

/* 响应式设计 */

/* 响应式设计 */

@media (max-width: 1200px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero .container {
        gap: 3rem;
    }
    
    .app-window {
        width: 350px;
        height: 280px;
    }
}

@media (max-width: 992px) {
	.speed-content,
    .format-content {
        grid-template-columns: 1fr;
        text-align: center;
		gap:2rem;
    }

    .speed-visual,
    .format-grid {
        order: -1;
    }

    .speed-stats {
        gap: 1rem;
    }

    .format-grid {
        grid-template-columns: repeat(3, 1fr);
		gap:1.0rem;
    }
	.format-item {
		padding:1.0rem 0.5rem;
	}
	.format-info, .speed-description {
		padding:1.0rem 0;
		text-align: left;
	}
	.download-title {
		font-size:1.8rem;
	}
	.download-subtitle {
		font-size:1.0rem;
	}
	
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid rgba(0, 123, 255, 0.2);
        padding: 2rem;
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
        transform: translateY(-150%);
        transition: var(--transition);
        z-index: 999;
    }
    
    .navbar-menu.active {
        transform: translateY(0);
    }
    
    .nav-links {
        flex-direction: column;
        width:100%;
    }
	
	.features-grid {
		display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
	}
	.feature-card {
		padding:1rem;
	}
	
	.speed-info {
		padding:0;
	}
	
	.language-selector {
		margin-left:0;
		width:100%;
	}
	.language-dropdown {
		width:100%;
	}
	.btn-primary {
		width:100%;
	}
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-image {
        order: 1;
    }
    
    .hero-stats {
        justify-content: center;
    }
	.footer {
		padding:1.5rem 0.3rem;
	}
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1rem;
		margin-bottom: 1rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
		padding-top: 1rem;
		gap:0.3rem;
    }
	.footer-links {
		grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
	}
	.footer-friend-links {
		justify-content: center;
	}
	.back-to-top {
		right:0.6rem;
	}
	.back-to-top.show {
		opacity: 0.65;
	}
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        align-items: center;
    }
	.hero-buttons .btn-primary,.hero-buttons .btn-secondary {
		flex:1;
		padding: 0.8rem;
		font-size:1.2rem;
	}
    
    .hero-stats {
        align-items: center;
        gap: 1rem;
    }
    
    .stat-item {
        width: 100%;
        max-width: 200px;
		padding:0.5rem;
    }
	.stat-number {
	    font-size:1.4rem;
		margin-bottom: 0.3rem;
	}
	.stat-label {
		font-size:0.9rem;
	}
	
	.features, .speed-feature, .format-support, .advantages, .download {
		padding:3rem 0;
	}
	
	.section-header {
		margin-bottom: 2rem;
	}
    
    .app-window {
        width: 300px;
        height: 250px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .download-content {
        padding: 3rem 2rem;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 100%;
        max-width: 250px;
    }
    
    .download-info {
        flex-direction: column;
        align-items:baseline;
        gap: 1rem;
    }
}

/* i18n: 29 languages grid（全站保持 LTR 版式，不在 html[dir=rtl] 下做 flex 镜像） */
.language-options.language-grid {
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto;
}

.language-options.language-grid .language-btn {
    min-width: 120px;
    padding: 0.65rem 1rem;
    font-size: 0.95rem;
}