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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
	
	background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
	max-width: auto;
}
.nav_other {
	display:flex;
	gap:1rem;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #3498db;
}

.logo i {
    margin-right: 10px;
    width:3.6rem;
	height:3.6rem;
}
.logo i img {
	width:100%;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
	font-size:1.1rem;
}

.nav-links a:hover {
    color: #3498db;
}

.t_btn-primary {
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    color: #fff!important;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
	height:3.0rem;
}

.t_btn-primary:hover {
    background: linear-gradient(135deg, #7339F1, #17A3FB);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(23, 163, 251, 0.4);
    color: #fff;
}

.btn-secondary {
    background: #fff;
    color: #3498db;
    padding: 10px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    border: 2px solid #3498db;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: #3498db;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
}

.language-selector {
    position: relative;
}

.language-btn {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 50px;
    padding: 1rem 2rem 1rem 1rem;
	height:3rem;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
	font-size:1.1rem;
}

.language-btn:hover {
    background: #e9ecef;
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    margin-top: 5px;
    min-width: 200px;
    max-height: min(70vh, 420px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(5px);
}

.language-dropdown a {
    display: block;
    padding: 10px 20px;
    text-decoration: none;
    color: #333;
    transition: background-color 0.3s ease;
}

.language-dropdown a:hover {
    background-color: #f8f9fa;
}
.language-selector .fa-globe {
	width: 1.2rem;
	height:1.2rem;
	background:url(../images/golab.png) no-repeat center;
	background-size:100% auto; 
}
.language-selector .fa-chevron-down {
	position: absolute;
    top: 50%;  
    right: 15px;  
    width: 10px;  
    height: 10px;  
    border-style: solid;  
    border-width: 2px 2px 0 0;  
    border-color: #3294D6;  
    -webkit-transform-origin: 75% 25%;  
    -webkit-transform: rotateZ(45deg);  
    -webkit-transition: 300ms ease;  
    transition: 300ms ease;
}

.language-selector.active .fa-chevron-down {
    -webkit-transform: rotateZ(135deg);
    transform: rotateZ(135deg);
}

.mobile-menu {
    display: none;
    width: 40px;
    height: 40px;
    cursor: pointer;
    position: relative;
    z-index: 1001;
}

.hamburger {
    width: 30px;
    height: 24px;
    position: relative;
    margin: 8px auto;
    transform: rotate(0deg);
    transition: 0.3s ease-in-out;
    cursor: pointer;
}

.hamburger span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    border-radius: 3px;
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: 0.25s ease-in-out;
}

.hamburger span:nth-child(1) {
    top: 0px;
}

.hamburger span:nth-child(2) {
    top: 10px;
}

.hamburger span:nth-child(3) {
    top: 20px;
}

.mobile-menu.active .hamburger span:nth-child(1) {
    top: 10px;
    transform: rotate(135deg);
}

.mobile-menu.active .hamburger span:nth-child(2) {
    opacity: 0;
    left: -60px;
}

.mobile-menu.active .hamburger span:nth-child(3) {
    top: 10px;
    transform: rotate(-135deg);
}

/* 英雄区域 */
.hero {
    background:url(../images/banner_bg.jpg) no-repeat center;
	background-size:cover;
    padding: 120px 0 80px;
	height:80vh;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
	padding:0;
	height:100%;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
	
	background: linear-gradient(to right,#7243F5,#1E9FFB);
      -webkit-background-clip: text;
      background-clip: text;
      color: transparent;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #555;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.h_primary,.h_secondary {
	background: linear-gradient(135deg, #17A3FB, #7339F1);
    color: #fff!important;
    padding: 2rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 3rem;
	transition: color 0.3s ease;
    font-size: 1.2rem;
	display: flex;
}

.h_secondary {
	background:#fff;
	color:#3294D6!important;
	border: 1px solid #3294D6;
}
.hero-buttons i {
	display:block;
	width:1.6rem;
	height:1.6rem;
}
.hero-buttons i img {
	width:100%;
}

.hero-image img {
    width: 100%;
    transition: transform 0.3s ease;
}

.hero-image img:hover {
    transform: scale(1.02);
}

/* 通用版块样式 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 15px;
    color: #2c3e50;
}

.section-header p {
    font-size: 1.1rem;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

/* 产品功能版块 */
.features {
    padding: 100px 0;
    background: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-item {
    background: #f8f9fa;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #3498db;
}

.feature-image {
    width: 100%;
    height: 240px;
    margin: 0 auto 20px;
    border-radius: 15px 15px 0 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.feature-item p {
    color: #7f8c8d;
    line-height: 1.6;
	padding: 0 30px 30px 30px;
	text-align: left;
}

/* 在线转换功能版块 */
.online-convert {
    padding: 100px 0;
    background: #f5f7fa;
}

.online-convert-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.convert-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.step {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.step:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 15px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: bold;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.step h3 {
    font-size: 1.4rem;
    margin: 0;
    color: #2c3e50;
}

.step p {
    color: #7f8c8d;
    margin: 0;
    padding-left: 65px;
	font-size:1.1rem;
}

.step-arrow {
    display: flex;
    justify-content: center;
    margin: 5px 0;
}

.step-arrow i {
    width: 20px;
    height: 20px;
    border-right: 3px solid #17A3FB;
    border-bottom: 3px solid #17A3FB;
    transform: rotate(45deg);
    animation: arrowBounce 1.5s ease-in-out infinite;
    display: block;
}

@keyframes arrowBounce {
    0%, 100% {
        transform: rotate(45deg) translateY(0);
    }
    50% {
        transform: rotate(45deg) translateY(8px);
    }
}

.convert-form {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
	min-height: 580px;
}

.convert-form:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: #2c3e50;
    font-size: 1.1rem;
}

.file-upload-area {
    border: 2px dashed #3498db;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
	min-height: 220px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.file-upload-area:hover {
    border-color: #2980b9;
    background-color: rgba(52, 152, 219, 0.05);
}

#file-upload {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 10;
}

.upload-icon {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.file-upload-area:hover .upload-icon {
    transform: scale(1.1);
}

.file-list {
    margin-top: 20px;
    text-align: left;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 5px;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.file-item i {
    color: #3498db;
    margin-right: 10px;
}

.file-item .file-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-item .file-size {
    color: #7f8c8d;
    margin-left: 10px;
}

select {
    width: 100%;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    font-size: 1rem;
    background: #fff;
    transition: all 0.3s ease;
}

select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.convert-form button {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    cursor: pointer;
    border: none;
    border-radius: 50px;
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    color: #fff;
    font-weight: 600;
    transition: all 0.3s ease;
}

.convert-form button:hover {
    background: linear-gradient(135deg, #7339F1, #17A3FB);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(23, 163, 251, 0.4);
}

.conversion-result {
    margin-top: 30px;
    text-align: center;
}

.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 10px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.result {
    padding: 30px;
    background: #f8f9fa;
    border-radius: 10px;
    text-align: center;
}

.result-icon {
    width: 80px;
    height: 80px;
    background: #27ae60;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #fff;
    font-size: 2rem;
}

.result h3 {
    margin-bottom: 20px;
    color: #2c3e50;
}

#download-link {
    display: inline-block;
    margin-top: 10px;
}

/* 支持大数据量文件版块 */
.big-data {
    padding: 100px 0;
    background: #fff;
}

.big-data-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.big-data-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
	width:480px;
}

.big-data-feature {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: 15px;
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    transition: all 0.3s ease;
    border: none;
}

.big-data-feature:hover {
    transform: translateY(-5px);
    background: #edf7fe;
    box-shadow: 0 10px 15px rgba(30, 160, 250, 0.1);
}

.big-data-feature i {
    width: 2.6rem;
	height:2.6rem;
    color: #3498db;
    margin-right: 15px;
}
.big-data-feature i img {
	width:100%;
}

.big-data-feature h3 {
    font-size: 1.4rem;
    margin: 0;
    color: #2c3e50;
    display: inline;
}

.big-data-feature .feature-header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.big-data-feature p {
    color: #7f8c8d;
    margin: 0;
    padding-left: 0;
	font-size:1.1rem;
}

.big-data-image {
	flex:1;
}
.big-data-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 支持自定义数据列格式版块 */
.custom-format {
    padding: 100px 0;
    background: #f5f7fa;
}

.custom-format-content {
    display: flex;
    gap: 60px;
    align-items: center;
}
.custom-format-image {
	flex:1;
}
.custom-format-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.custom-format-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
	width:480px;
}

.custom-feature {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: 15px;
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.custom-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.custom-feature i {
    width: 2.6rem;
	height:2.6rem;
    color: #3498db;
    margin-right: 15px;
}
.custom-feature i img {
	width:100%;
}

.custom-feature h3 {
    font-size: 1.4rem;
    margin: 0;
    color: #2c3e50;
    display: inline;
}

.custom-feature .feature-header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.custom-feature p {
    color: #7f8c8d;
    margin: 0;
    padding-left: 0;
	font-size:1.1rem;
}

/* 支持合并输出版块 */
.merge-output {
    padding: 100px 0;
    background: #ffffff;
}

.merge-output-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.merge-output-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
	width:480px;
}

.merge-feature {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: 15px;
    background: #f8f9fa;
    padding: 30px;
    border-radius: 15px;
    transition: all 0.3s ease;
    border: none;
}

.merge-feature:hover {
    transform: translateY(-5px);
    background: #edf7fe;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.merge-feature i {
    width: 2.6rem;
	height:2.6rem;
    color: #3498db;
    margin-right: 15px;
}

.merge-feature i img {
	width:100%;
}

.merge-feature h3 {
    font-size: 1.4rem;
    margin: 0;
    color: #2c3e50;
    display: inline;
}

.merge-feature .feature-header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.merge-feature p {
    color: #7f8c8d;
    margin: 0;
    padding-left: 0;
	font-size:1.1rem;
}
.merge-output-image {
	flex:1;
}
.merge-output-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
/* 一键导出兼容多种使用场景版块 */
.export {
    padding: 100px 0;
    background: #eff8fe;
}

.export-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.scenario {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.scenario:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #3498db;
}

.scenario-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: #fff;
    font-size: 2rem;
    transition: all 0.3s ease;
}
.scenario-icon img {
	width:70%;
}

.scenario:hover .scenario-icon {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(23, 163, 251, 0.5);
}

.scenario h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.scenario p {
    color: #7f8c8d;
}

/* 立即下载版块 */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    color: #fff;
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 20px;
}

.download-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

/* 仅提供 Windows 安装包：隐藏 Mac / Linux 等次要下载按钮（若 HTML 中存在） */
.download-buttons > .down-secondary {
    display: none !important;
}

.download-buttons .down-primary {
    background: #fff;
    color: #3498db;
    font-size: 1.1rem;
    padding: 15px 30px;
    min-width: 200px;
	text-decoration: none;
	border-radius: 50px;
	font-weight: bold;
	border:2px solid #fff;
	display: flex;
	justify-content: center;
	align-items: center;
	font-size:1.3rem;
	gap:1rem;
}

.download-buttons .down-primary:hover {
    background: #f8f9fa;
    color: #2980b9;
}

.download-buttons .down-secondary {
    background: transparent;
    color: #fff;
    border-color: #fff;
    font-size: 1.1rem;
    padding: 15px 30px;
    min-width: 200px;
	border:2px solid #fff;
	border-radius: 50px;
	text-decoration: none;
	font-weight: bold;
	display: flex;
	justify-content: center;
	align-items: center;
	font-size:1.3rem;
	gap:1rem;
}

.download-buttons .down-secondary:hover {
    background: #fff;
    color: #3498db;
}

.download-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
    font-size: 0.9rem;
    opacity: 0.8;
}

.download-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0;
}
.down-primary .fa-download {
	display: block;
	width:2.2rem;
	height:2.2rem;
	background: url(../images/down_s.png) no-repeat center;
	background-size:100% auto;
}
.down-secondary .fa-download {
	display: block;
	width:2.2rem;
	height:2.2rem;
	background: url(../images/down.png) no-repeat center;
	background-size:100% auto;
}
.down-secondary:hover .fa-download {
	display: block;
	width:2.2rem;
	height:2.2rem;
	background: url(../images/down_s.png) no-repeat center;
	background-size:100% auto;
}

.down-primary .fa-windows {
	background:url(../images/windows_s.png) no-repeat center;
	background-size:100% auto;
	display: block;
	width:2.2rem;
	height:2.2rem;
}
.down-secondary .fa-apple {
	background:url(../images/apple.png) no-repeat center;
	background-size:100% auto;
	display: block;
	width:2.2rem;
	height:2.2rem;
}
.down-secondary .fa-linux {
	background:url(../images/linux.png) no-repeat center;
	background-size:100% auto;
	display: block;
	width:2.2rem;
	height:2.2rem;
}
.down-secondary:hover .fa-apple {
	background:url(../images/apple_s.png) no-repeat center;
	background-size:100% auto;
	display: block;
	width:2.2rem;
	height:2.2rem;
}
.down-secondary:hover .fa-linux {
	background:url(../images/linux_s.png) no-repeat center;
	background-size:100% auto;
	display: block;
	width:2.2rem;
	height:2.2rem;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(24px, 4vw, 48px);
    margin-bottom: 40px;
    align-items: center;
}

.footer-brand {
    min-width: 0;
}

.footer-brand p {
    max-width: 28rem;
}

.footer-site-links {
    justify-self: end;
}

.footer-site-links ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
    gap: clamp(1rem, 3vw, 2rem);
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-site-links ul li {
    margin: 0;
}

.footer-site-links ul li a {
    color: #bdc3c7;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.footer-site-links ul li a:hover {
    color: #3498db;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #3498db;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3498db;
}

.footer-list {
	display:flex;
	justify-content: center;
	gap:10rem;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ecf0f1;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #3498db;
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: #bdc3c7;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container,
    .online-convert-content,
    .big-data-content,
    .custom-format-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        position: fixed;
        top: 85px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 0 20px;
        gap: 0;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s ease;
		width:100%;
    }

    .nav-links.active {
        max-height: 500px;
        padding: 20px;
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        padding: 15px 0;
        border-bottom: 1px solid #f0f0f0;
        width: 100%;
        text-align: center;
    }

    .nav-links a:last-of-type {
        border-bottom: none;
    }

    .nav-links .t_btn-primary {
        margin-top: 10px;
        justify-content: center;
    }

    .nav-links .language-selector {
        margin-top: 10px;
        justify-content: center;
    }

    .mobile-menu {
        display: block;
    }

    .language-selector {
        margin-left: 0;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .step-header {
        justify-content: center;
    }

    .step p {
        padding-left: 0;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .download-buttons a {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 768px) {
	.nav_other {
		width:90%;
	}
	.language-selector, .t_btn-primary {
		flex:1;
	}
	.language-btn {
		width:100%;
		justify-content: center;
	}
    .hero {
        padding: 120px 0 60px;
		height:90vh;
    }
	.hero .container {
		padding:0 1rem;
	}

    .hero-content h1 {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }
	.h_primary, .h_secondary {
		justify-content:center;
		align-items: center;
	}

    .features,
    .online-convert,
    .big-data,
    .custom-format,
    .export,
    .download {
        padding: 2rem 0;
    }

	.feature-item {
		padding:0;
	}
	.section-header {
		margin-bottom:2rem;
	}
    .scenario {
        padding: 30px;
    }
	.convert-steps {
		gap:1rem;
	}

    .step,
    .big-data-feature,
    .custom-feature {
        padding: 20px;
    }
	.big-data-content,.custom-format-content,.merge-output-content {
		flex-direction:column;
		gap:1rem;
	}
	.big-data-features,.custom-format-features,.merge-output-features {
		width:auto;
		gap:1rem;
	}
	.download-content p {
		font-size:1.0rem;
	}
	.download-content h2 {
		font-size:1.8rem;
	}
	.footer {
		padding:2rem 0;
	}
	.footer-content {
		gap:1rem;
		margin-bottom: 1rem;
	}
	.footer-list {
		gap:1rem;
		justify-content: space-between;
	}
	.footer-bottom {
		padding-top:1.0rem;
	}
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons a {
        width: 100%;
        max-width: 250px;
        text-align: center;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .section-header p {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        max-width: none;
        margin-left: auto;
        margin-right: auto;
    }

    .footer-site-links {
        justify-self: center;
    }

    .footer-site-links ul {
        justify-content: center;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-item,
.step,
.big-data-feature,
.custom-feature,
.scenario {
    animation: fadeInUp 0.6s ease forwards;
}

.feature-item:nth-child(1) {
    animation-delay: 0.1s;
}

.feature-item:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-item:nth-child(3) {
    animation-delay: 0.3s;
}

.step:nth-child(1) {
    animation-delay: 0.1s;
}

.step:nth-child(3) {
    animation-delay: 0.2s;
}

.step:nth-child(5) {
    animation-delay: 0.3s;
}

.big-data-feature:nth-child(1) {
    animation-delay: 0.1s;
}

.big-data-feature:nth-child(2) {
    animation-delay: 0.2s;
}

.big-data-feature:nth-child(3) {
    animation-delay: 0.3s;
}

.custom-feature:nth-child(1) {
    animation-delay: 0.1s;
}

.custom-feature:nth-child(2) {
    animation-delay: 0.2s;
}

.custom-feature:nth-child(3) {
    animation-delay: 0.3s;
}

.scenario:nth-child(1) {
    animation-delay: 0.1s;
}

.scenario:nth-child(2) {
    animation-delay: 0.2s;
}

.scenario:nth-child(3) {
    animation-delay: 0.3s;
}

.scenario:nth-child(4) {
    animation-delay: 0.4s;
}

/* 滚动动画 */
.scroll-reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.6s ease;
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #17A3FB, #7339F1);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(23, 163, 251, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}
.back-to-top img {
	width:70%;
}

.back-to-top:hover {
    background: linear-gradient(135deg, #7339F1, #17A3FB);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(23, 163, 251, 0.5);
}

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

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}