/* 全局重置 */
* {
    margin: 0;
    padding: 0;
}
h1,h2,h3,h4,h5,h6 {
    margin: 0;
    padding: 0;
}
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
                 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    color: #333333;
    background-color: #ffffff;
    min-width: 1400px;
    background-image: url(../images/banner-bg.png);
    background-size: 100% auto;
    background-position: center top;
    background-repeat: no-repeat;
    position: relative;
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 40px;
}

/* 顶部导航 */
.header {
    background: #ffffff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo-text {
    font-size: 24px;
    font-weight: 600;
    color: rgba(48, 102, 255, 1);
}

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

.nav-link {
    color: #333333;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: rgba(48, 102, 255, 1);
}

.download-btn {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 2px;
	background-image:linear-gradient(90deg, #3F66FF 0%, #9C3FFF 100%),linear-gradient(0deg,transparent,transparent);
	background-clip: content-box,border-box;
	padding:3px;
	color: white;
	border-radius: 40px;
	box-sizing: border-box;
	font-size: 36px;
	text-decoration: none;
	width:380px;
	height:80px;
	overflow: hidden;
	position: relative;
}
.download-btn:hover{
	background-image:linear-gradient(90deg, #453FFF 0%, #CF3FFF 100%),linear-gradient(0deg,transparent,transparent);
}
.download-btn-top{
	display: flex;
	align-items: center;
	gap: 15px;
}
.download-btn-top img{
	width:40px;
	height:40px;
}

.download-btn::before{
	content:'';
	animation: rotate-rainbow 10000ms linear infinite;
    background: conic-gradient(#FF0000, #FFA500, #FFFF00, #008000, #0000FF, #4B0082, #EE82EE, #FF0000);
    filter: blur(4px);
    padding: 2px;
	inset: -200%;
	position: absolute;
	z-index: -1;
}
@keyframes rotate-rainbow {
    0% {
        transform: rotate(0)
    }

    to {
        transform: rotate(1turn)
    }
}

.btn-icon {
	font-size: 24px;
	margin-bottom: 5px;
}

.btn-subtitle {
	font-size: 14px;
	font-weight: normal;
}

.download-info {
	display: flex;
	align-items: center;
	gap: 15px;
	font-size: 16px;
	color: rgba(36, 41, 65, 1);
}
.info-item {
	display: flex;
	align-items: center;
	gap: 10px;
}
.info-item img{
	width:20px;
	height:20px;
}

/* Banner区域 */
.banner {
    padding: 40px 0 0;
    position: relative;
    overflow: hidden;
}

.banner .container {
    text-align: center;
    position: relative;
}

.banner-header {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cad-icon {
}

.logo-badge {
    color: rgba(34, 34, 34, 1);
    font-size: 20px;
    font-weight: 400;
}

.banner-main {
    padding-top: 40px;
}

.banner-title-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.cad-logo {
}

.main-title {
    position: relative;
    font-size: 66px;
    font-weight: 700;
    color: rgba(34, 34, 34, 1);
    margin: 0;
}
.main-title img {
   position: absolute;
   top: -31px;
   right: 0;
}

.banner-desc {
    font-size: 24px;
    color: rgba(34, 34, 34, 1);
    font-weight: 290;
    margin-bottom: 24px;
    line-height: 1.6;
    text-align: center;
}

.format-highlight {
    color: rgb(210, 7, 22);
    font-weight: bold;
}

.download-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    margin-bottom: 30px;
}

.download-btn-main {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 48px;
    background: linear-gradient(135deg, rgba(48, 102, 255, 1) 0%, rgba(80, 150, 255, 1) 100%);
    color: white;
    border-radius: 25px;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(48, 102, 255, 0.3);
    position: relative;
}

.download-btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(48, 102, 255, 0.4);
}

.windows-icon {
    font-size: 16px;
    margin-right: 8px;
}




.banner-screenshot {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.banner-swiper {
    max-width: 1140px;
    width: 100%;
    height: auto;
   
}

.banner-swiper .swiper-slide {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
    background: rgba(48, 102, 255, 0.1);
    border-radius: 10px;
}

.banner-screenshot img {
    max-width: 100%;
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* Swiper分页器样式 */
.banner-swiper .swiper-pagination {
    bottom: 10px;
}

.banner-swiper .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 1;
}

.banner-swiper .swiper-pagination-bullet-active {
    background: rgba(48, 102, 255, 1);
}

/* 功能区域 */
.features-section {
    padding: 37px 0 0;
    background: #ffffff;
}

.feature-block {
    display: flex;
    align-items: center;
    gap: 60px;
    margin-bottom: 120px;
}

.feature-block.reverse {
    flex-direction: row-reverse;
}

.feature-content {
    flex: 1;
    padding-right: 20px;
}

.feature-block.reverse .feature-content {
    padding-right: 0;
    padding-left: 20px;
}

.feature-title {
    font-size: 32px;
    font-weight: 700;
    color: #333333;
    margin-bottom: 38px;
}

.feature-desc {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.8;
    margin-bottom: 38px;
}

.format-list {
    color: rgba(48, 102, 255, 1);
    font-weight: 600;
}

.feature-link {
    color: rgba(48, 102, 255, 1);
    text-decoration: none;
    font-weight: 600;
}

.feature-link:hover {
    text-decoration: underline;
}

.highlight-text {
    color: rgb(48, 102, 255);
    font-weight: 600;
}

.feature-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    column-gap: 8px;
    width: 300px;
    height: 74px;
    background: rgba(48, 102, 255, 1);
    color: white;
    border-radius: 10px;
    text-decoration: none;
    font-size: 28px;
    font-weight: 400;
    transition: all 0.3s ease;
}
.feature-download-btn img {
    position: relative;
    top: 3px;
}

.feature-download-btn:hover {
    background: rgba(27, 73, 205, 1);
    transform: translateY(-2px);
}

.download-icon {
    font-size: 14px;
}

.feature-badge {
    display: inline-block;
    background: #8b5cf6;
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 12px;
    font-weight: 600;
    margin-top: 16px;
}

.feature-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}
.feature-image img {
    transition: all 0.3s ease;
}
.feature-image:hover img {
    transform: scale(1.05) translateY(-3px);
}

.feature-image img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

/* 动画初始状态 */
*[lazy-animate] {
    opacity: 0;
}

/* 常见问题区域 */
.faq-section {
    background: #fff;
}

.faq-header {
    text-align: center;
    margin-bottom: 60px;
}

.faq-title {
    font-size: 40px;
    font-weight: 700;
    color: #333333;
    margin-bottom: 9px;
}

.faq-subtitle {
    font-size: 20px;
    font-weight: 400;
}

.faq-list {
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: #ffffff;
    border-radius: 10px;
    padding: 22px;
    margin-bottom: 30px;
    border: 1px solid rgba(34, 34, 34, 0.2);
    box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.faq-question {
    font-size: 24px;
    font-weight: 400;
    color: #333333;
    margin-bottom: 16px;
    line-height: 1.4;
}

.faq-answer {
    font-size: 15px;
    color: #666666;
    line-height: 1.6;
    margin-bottom: 12px;
}

.faq-answer:last-child {
    margin-bottom: 0;
}

/* 底部下载区域 */
.bottom-download {
    padding: 60px 0 40px;
}

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

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

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

.cad-icon-large {
    background: rgba(48, 102, 255, 1);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 24px;
    border: 2px solid rgba(48, 102, 255, 1);
}

.logo-badge-top {
    position: absolute;
    top: -8px;
    right: -40px;
    background: #ff4757;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.bottom-title {
    font-size: 48px;
    font-weight: 700;
    color: #333333;
    margin: 0;
}

.bottom-desc {
    font-size: 18px;
    color: #666666;
    margin-bottom: 40px;
    line-height: 1.6;
}

.bottom-download-section {
    margin-bottom: 30px;
}

.bottom-download-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 60px;
    background: linear-gradient(135deg, rgba(48, 102, 255, 1) 0%, rgba(80, 150, 255, 1) 100%);
    color: white;
    border-radius: 30px;
    text-decoration: none;
    font-size: 20px;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(48, 102, 255, 0.3);
    position: relative;
}

.bottom-download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(48, 102, 255, 0.4);
}

.bottom-download-btn .windows-icon {
    font-size: 18px;
    margin-right: 8px;
}

.system-info {
    font-size: 13px;
    opacity: 0.9;
    margin-top: 6px;
    font-weight: 400;
}

.bottom-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 14px;
    color: #666666;
}

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

.info-text {
    color: #666666;
}

.divider {
    color: #cccccc;
}

.update-time {
    color: #666666;
}

/* 页脚 */
.footer {
    background: rgba(40, 43, 50, 1);
    color: #ffffff;
    padding: 17px 0;
    text-align: center;
}

.footer p {
    font-size: 16px;
    color: rgba(255, 255, 255, 1);
}


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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}