/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #2d3436;
    line-height: 1.7;
    scroll-behavior: smooth;
    min-height: 100vh;
}

a {
    color: #6c5ce7;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #a29bfe;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* 导航吸顶毛玻璃效果 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    font-size: 26px;
    font-weight: 700;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 1px;
    text-shadow: none;
}

.logo span {
    background: linear-gradient(135deg, #fdcb6e, #e17055);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: #2d3436;
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #6c5ce7, #fd79a8);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.nav-menu a:hover {
    color: #6c5ce7;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
    padding: 5px;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: #2d3436;
    border-radius: 3px;
    transition: 0.3s;
}

/* 移动菜单毛玻璃 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    padding: 20px;
    z-index: 999;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.mobile-menu a {
    display: block;
    color: #2d3436;
    padding: 14px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s;
}

.mobile-menu a:hover {
    color: #6c5ce7;
    padding-left: 10px;
}

.mobile-menu.active {
    display: block;
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 26px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 999;
    box-shadow: 0 8px 25px rgba(108, 92, 231, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 35px rgba(108, 92, 231, 0.5);
}

/* Banner 渐变背景与轮播 */
.banner {
    position: relative;
    height: 620px;
    overflow: hidden;
    margin-top: 70px;
    background: linear-gradient(135deg, #2d3436, #636e72);
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #fff;
    text-align: center;
    padding: 40px;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide h1 {
    font-size: 52px;
    margin-bottom: 20px;
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    font-weight: 800;
    background: linear-gradient(135deg, #fff, #dfe6e9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.banner-slide p {
    font-size: 20px;
    max-width: 700px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    opacity: 0.9;
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 14px;
}

.banner-dots span {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.banner-dots span.active {
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    transform: scale(1.3);
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.5);
}

/* 通用section */
section {
    padding: 90px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 55px;
}

.section-title h2 {
    font-size: 36px;
    color: #2d3436;
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
    font-weight: 700;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 70px;
    height: 4px;
    background: linear-gradient(90deg, #6c5ce7, #fd79a8);
    border-radius: 4px;
}

.section-title p {
    color: #636e72;
    margin-top: 12px;
    font-size: 17px;
}

/* 品牌介绍 圆角卡片+毛玻璃 */
.brand-intro {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.brand-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.brand-text h3 {
    font-size: 30px;
    color: #2d3436;
    margin-bottom: 20px;
    font-weight: 700;
}

.brand-text p {
    color: #555;
    margin-bottom: 15px;
    font-size: 16px;
    text-indent: 2em;
}

.brand-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    padding: 25px 15px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.7);
}

.stat-item .num {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item .label {
    color: #636e72;
    margin-top: 6px;
    font-size: 14px;
    font-weight: 500;
}

.brand-svg {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 产品 圆角卡片与hover动画 */
.products {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    padding: 35px 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.product-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px rgba(108, 92, 231, 0.15);
    background: rgba(255, 255, 255, 0.85);
}

.product-card h3 {
    font-size: 22px;
    color: #2d3436;
    margin: 18px 0 12px;
    font-weight: 700;
}

.product-card p {
    color: #636e72;
    font-size: 14px;
    line-height: 1.8;
}

.product-svg {
    width: 100%;
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(108, 92, 231, 0.05);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
}

.product-card:hover .product-svg {
    background: rgba(108, 92, 231, 0.1);
}

/* 解决方案 毛玻璃卡片 */
.solutions {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.solution-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.solution-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    align-items: flex-start;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.solution-item:hover {
    background: rgba(255, 255, 255, 0.75);
    transform: translateX(5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.solution-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
}

.solution-text h3 {
    font-size: 19px;
    color: #2d3436;
    margin-bottom: 8px;
    font-weight: 600;
}

.solution-text p {
    color: #636e72;
    font-size: 14px;
    line-height: 1.8;
}

/* 行业应用 */
.applications {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.app-card {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 35px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.app-card:hover {
    box-shadow: 0 12px 40px rgba(108, 92, 231, 0.12);
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.8);
}

.app-card h3 {
    font-size: 19px;
    color: #2d3436;
    margin: 15px 0 10px;
    font-weight: 600;
}

.app-card p {
    color: #636e72;
    font-size: 14px;
    line-height: 1.7;
}

/* 案例 */
.cases {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.75);
}

.case-info {
    padding: 22px;
}

.case-info h3 {
    font-size: 19px;
    color: #2d3436;
    margin-bottom: 8px;
    font-weight: 600;
}

.case-info p {
    color: #636e72;
    font-size: 14px;
    line-height: 1.7;
}

/* 评价 */
.testimonials {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-3px);
}

.testimonial-card::before {
    content: '"';
    font-size: 70px;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.3;
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: Georgia, serif;
}

.testimonial-card p {
    font-style: italic;
    color: #555;
    margin-bottom: 15px;
    padding-left: 25px;
    font-size: 15px;
    line-height: 1.8;
}

.testimonial-author {
    font-weight: 600;
    color: #2d3436;
    text-align: right;
    font-size: 15px;
}

/* 新闻 */
.news {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.news-card {
    display: flex;
    gap: 20px;
    padding: 22px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.news-card:hover {
    background: rgba(255, 255, 255, 0.75);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
}

.news-date {
    flex-shrink: 0;
    width: 65px;
    text-align: center;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    color: #fff;
    border-radius: 12px;
    padding: 10px 0;
    height: fit-content;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.news-date .day {
    font-size: 24px;
    font-weight: 700;
}

.news-date .mon {
    font-size: 12px;
    text-transform: uppercase;
    opacity: 0.9;
}

.news-content h3 {
    font-size: 17px;
    color: #2d3436;
    margin-bottom: 6px;
    font-weight: 600;
}

.news-content p {
    color: #636e72;
    font-size: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.7;
}

.news-content a {
    color: #6c5ce7;
    font-size: 13px;
    display: inline-block;
    margin-top: 8px;
    font-weight: 500;
    transition: all 0.3s;
}

.news-content a:hover {
    color: #fd79a8;
    padding-left: 5px;
}

/* FAQ */
.faq {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

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

.faq-item {
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    margin-bottom: 14px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.faq-item:hover {
    background: rgba(255, 255, 255, 0.7);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    cursor: pointer;
    font-weight: 600;
    color: #2d3436;
    transition: 0.3s;
    user-select: none;
    font-size: 16px;
}

.faq-question:hover {
    background: rgba(108, 92, 231, 0.05);
}

.faq-question .icon {
    font-size: 24px;
    transition: transform 0.4s ease;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 300;
}

.faq-item.active .faq-question .icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 28px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 600px;
    padding: 0 28px 22px;
}

.faq-answer p {
    color: #636e72;
    font-size: 15px;
    line-height: 1.8;
}

/* HowTo */
.howto {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
}

.howto-steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
    padding: 18px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(8px);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s;
}

.step:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: translateX(5px);
}

.step-num {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
}

.step-content h3 {
    font-size: 19px;
    color: #2d3436;
    margin-bottom: 6px;
    font-weight: 600;
}

.step-content p {
    color: #636e72;
    font-size: 14px;
    line-height: 1.8;
}

/* 关于 */
.about {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.about-card {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 35px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.about-card:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.about-card h3 {
    font-size: 20px;
    color: #2d3436;
    margin-bottom: 12px;
    font-weight: 700;
}

.about-card p {
    color: #636e72;
    font-size: 14px;
    line-height: 1.8;
}

.about-card .contact-info {
    text-align: left;
    margin-top: 12px;
}

.about-card .contact-info div {
    margin-bottom: 8px;
    font-size: 14px;
    color: #555;
}

.about-card .contact-info strong {
    display: inline-block;
    width: 75px;
    color: #2d3436;
    font-weight: 600;
}

/* 友情链接 */
.links {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(5px);
    padding: 45px 0;
}

.links .container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}

.links a {
    color: #636e72;
    font-size: 14px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(6px);
    border-radius: 25px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.links a:hover {
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(108, 92, 231, 0.3);
}

/* 页脚 毛玻璃 */
footer {
    background: rgba(44, 62, 80, 0.9);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    color: #bdc3c7;
    padding: 55px 0 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 30px;
}

.footer-col h4 {
    color: #ecf0f1;
    margin-bottom: 20px;
    font-size: 19px;
    position: relative;
    padding-bottom: 12px;
    font-weight: 600;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 45px;
    height: 3px;
    background: linear-gradient(90deg, #6c5ce7, #fd79a8);
    border-radius: 3px;
}

.footer-col p,
.footer-col a {
    color: #bdc3c7;
    font-size: 14px;
    line-height: 2.2;
}

.footer-col a {
    display: block;
    transition: all 0.3s ease;
}

.footer-col a:hover {
    color: #fff;
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 22px;
    text-align: center;
    font-size: 13px;
    color: #95a5a6;
}

.footer-bottom a {
    color: #bdc3c7;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: #fff;
}

/* 面包屑 */
.breadcrumb {
    background: rgba(236, 240, 241, 0.4);
    backdrop-filter: blur(8px);
    padding: 14px 0;
    font-size: 14px;
    color: #636e72;
    margin-top: 70px;
}

.breadcrumb a {
    color: #6c5ce7;
    font-weight: 500;
}

.breadcrumb span {
    margin: 0 8px;
}

/* 站内搜索 */
.search-box {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 5px 18px;
    margin-left: 15px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: all 0.3s;
}

.search-box:focus-within {
    background: rgba(255, 255, 255, 0.35);
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.1);
}

.search-box input {
    background: none;
    border: none;
    color: #2d3436;
    padding: 8px;
    outline: none;
    width: 150px;
    font-size: 14px;
}

.search-box input::placeholder {
    color: #b2bec3;
}

.search-box button {
    background: none;
    border: none;
    color: #2d3436;
    cursor: pointer;
    font-size: 18px;
    padding: 5px;
    transition: transform 0.3s;
}

.search-box button:hover {
    transform: scale(1.1);
}

/* 暗黑模式切换按钮 */
.dark-mode-toggle {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: #2d3436;
    font-size: 20px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 25px;
    transition: all 0.3s;
    backdrop-filter: blur(5px);
}

.dark-mode-toggle:hover {
    background: rgba(108, 92, 231, 0.2);
    color: #6c5ce7;
}

/* 暗黑模式 */
body.dark {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #e0e0e0;
}

body.dark .navbar {
    background: rgba(26, 26, 46, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

body.dark .nav-menu a {
    color: #bdc3c7;
}

body.dark .nav-menu a:hover {
    color: #a29bfe;
}

body.dark .mobile-menu {
    background: rgba(26, 26, 46, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

body.dark .mobile-menu a {
    color: #bdc3c7;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

body.dark .mobile-menu a:hover {
    color: #a29bfe;
}

body.dark .brand-intro,
body.dark .solutions,
body.dark .cases,
body.dark .news,
body.dark .howto,
body.dark .links {
    background: rgba(22, 33, 62, 0.4);
    backdrop-filter: blur(10px);
}

body.dark .products,
body.dark .applications,
body.dark .testimonials,
body.dark .faq,
body.dark .about {
    background: rgba(15, 52, 96, 0.3);
    backdrop-filter: blur(8px);
}

body.dark .product-card,
body.dark .app-card,
body.dark .case-card,
body.dark .testimonial-card,
body.dark .faq-item,
body.dark .about-card,
body.dark .news-card {
    background: rgba(26, 26, 46, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

body.dark .section-title h2 {
    color: #e0e0e0;
}

body.dark .section-title p {
    color: #aaa;
}

body.dark .stat-item {
    background: rgba(22, 33, 62, 0.5);
    backdrop-filter: blur(8px);
}

body.dark .solution-item {
    background: rgba(22, 33, 62, 0.5);
    backdrop-filter: blur(8px);
}

body.dark .product-svg {
    background: rgba(15, 52, 96, 0.4);
}

body.dark .breadcrumb {
    background: rgba(22, 33, 62, 0.4);
    color: #aaa;
}

body.dark .breadcrumb a {
    color: #a29bfe;
}

body.dark .links a {
    background: rgba(22, 33, 62, 0.5);
    color: #aaa;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

body.dark .links a:hover {
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    color: #fff;
}

body.dark footer {
    background: rgba(13, 27, 42, 0.9);
    backdrop-filter: blur(15px);
}

body.dark .faq-question {
    color: #e0e0e0;
}

body.dark .faq-question:hover {
    background: rgba(22, 33, 62, 0.5);
}

body.dark .about-card .contact-info strong {
    color: #a29bfe;
}

body.dark .news-date {
    background: linear-gradient(135deg, #6c5ce7, #fd79a8);
    color: #fff;
}

body.dark .search-box {
    background: rgba(255, 255, 255, 0.08);
}

body.dark .search-box input {
    color: #e0e0e0;
}

body.dark .search-box input::placeholder {
    color: #636e72;
}

body.dark .search-box button {
    color: #e0e0e0;
}

body.dark .dark-mode-toggle {
    background: rgba(255, 255, 255, 0.08);
    color: #e0e0e0;
}

body.dark .dark-mode-toggle:hover {
    background: rgba(108, 92, 231, 0.2);
    color: #a29bfe;
}

body.dark .step {
    background: rgba(26, 26, 46, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

body.dark .step:hover {
    background: rgba(26, 26, 46, 0.6);
}

body.dark .step-content h3 {
    color: #e0e0e0;
}

body.dark .step-content p {
    color: #aaa;
}

body.dark .menu-toggle span {
    background: #e0e0e0;
}

body.dark .logo {
    background: linear-gradient(135deg, #a29bfe, #fd79a8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式 */
@media (max-width: 992px) {
    .brand-content,
    .solution-list {
        grid-template-columns: 1fr;
    }
    .product-grid,
    .app-grid,
    .case-grid,
    .testimonial-grid,
    .news-grid,
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .brand-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .search-box {
        display: none;
    }
    .banner-slide h1 {
        font-size: 34px;
    }
    .banner-slide p {
        font-size: 17px;
    }
    .banner {
        height: 420px;
    }
    .product-grid,
    .app-grid,
    .case-grid,
    .testimonial-grid,
    .news-grid,
    .about-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    section {
        padding: 60px 0;
    }
    .section-title h2 {
        font-size: 28px;
    }
    .brand-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .banner-slide h1 {
        font-size: 26px;
    }
    .banner {
        height: 320px;
    }
    .brand-stats {
        grid-template-columns: 1fr;
    }
    .stat-item .num {
        font-size: 32px;
    }
}