/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

body {
    background: #f0f2f5;
    color: #1a1a2e;
    overflow-x: hidden;
    transition: background 0.3s, color 0.3s;
}

body.dark {
    background: #0f0f1a;
    color: #e0e0e0;
}

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

/* 导航 */
header {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background 0.3s;
}

body.dark header {
    background: rgba(15, 15, 26, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, #e94560, #0f3460);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -1px;
}

body.dark .logo {
    background: linear-gradient(135deg, #ff6b81, #1a5276);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    text-decoration: none;
    color: #1a1a2e;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s;
    position: relative;
}

body.dark .nav-links a {
    color: #c0c0d0;
}

.nav-links a:hover {
    color: #e94560;
}

body.dark .nav-links a:hover {
    color: #ff6b81;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #e94560;
    transition: width 0.3s;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: #1a1a2e;
    transition: transform 0.3s;
    padding: 5px;
}

body.dark .theme-toggle {
    color: #ffd700;
}

.theme-toggle:hover {
    transform: rotate(20deg);
}

.search-btn {
    background: linear-gradient(135deg, #e94560, #0f3460);
    color: #fff;
    border: none;
    padding: 8px 18px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    font-size: 0.9rem;
}

.search-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(233, 69, 96, 0.4);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #1a1a2e;
}

body.dark .mobile-menu-btn {
    color: #e0e0e0;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
    background: linear-gradient(135deg, #f0f2f5 0%, #e8ecf1 100%);
}

body.dark .hero {
    background: linear-gradient(135deg, #0f0f1a 0%, #1a1a2e 100%);
}

.hero-bg {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(233, 69, 96, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 50%, rgba(15, 52, 96, 0.08) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 30px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text h1 {
    font-size: 3.8rem;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #1a1a2e, #e94560);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark .hero-text h1 {
    background: linear-gradient(135deg, #e0e0e0, #ff6b81);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.2rem;
    color: #555;
    line-height: 1.8;
    margin-bottom: 30px;
    max-width: 500px;
}

body.dark .hero-text p {
    color: #aaa;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, #e94560, #0f3460);
    color: #fff;
    padding: 14px 35px;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(233, 69, 96, 0.4);
}

.btn-secondary {
    background: rgba(233, 69, 96, 0.1);
    color: #e94560;
    padding: 14px 35px;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.3s, background 0.3s;
    display: inline-block;
    border: 2px solid rgba(233, 69, 96, 0.3);
    cursor: pointer;
    font-size: 1rem;
}

body.dark .btn-secondary {
    color: #ff6b81;
    background: rgba(255, 107, 129, 0.1);
    border-color: rgba(255, 107, 129, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    background: rgba(233, 69, 96, 0.2);
}

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

.hero-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 30px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.5);
    text-align: center;
    width: 100%;
    max-width: 400px;
    transition: transform 0.3s;
}

body.dark .hero-card {
    background: rgba(26, 26, 46, 0.7);
    border-color: rgba(255, 255, 255, 0.1);
}

.hero-card:hover {
    transform: translateY(-10px);
}

.hero-card-svg {
    width: 180px;
    height: 180px;
    margin: 0 auto 20px;
}

.hero-card h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.hero-card p {
    color: #666;
    margin-bottom: 20px;
}

body.dark .hero-card p {
    color: #aaa;
}

.hero-card .badge {
    display: inline-block;
    background: #e94560;
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* 品牌介绍 */
.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #1a1a2e, #e94560);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark .section-title {
    background: linear-gradient(135deg, #e0e0e0, #ff6b81);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 60px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.brand-card {
    background: #fff;
    border-radius: 20px;
    padding: 40px 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
    text-align: center;
}

body.dark .brand-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.brand-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.brand-card svg {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
}

.brand-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.brand-card p {
    color: #666;
    line-height: 1.7;
}

body.dark .brand-card p {
    color: #aaa;
}

/* 企业介绍 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.about-text p {
    color: #555;
    line-height: 1.9;
    margin-bottom: 15px;
    font-size: 1.05rem;
}

body.dark .about-text p {
    color: #aaa;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: rgba(233, 69, 96, 0.05);
    border-radius: 15px;
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: scale(1.05);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: #e94560;
}

body.dark .stat-number {
    color: #ff6b81;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
    margin-top: 5px;
}

body.dark .stat-label {
    color: #aaa;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-svg-wrap {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 450px;
    text-align: center;
}

body.dark .about-svg-wrap {
    background: rgba(26, 26, 46, 0.5);
}

.about-svg-wrap svg {
    width: 100%;
    max-width: 350px;
    height: auto;
}

/* 品牌历史 */
.timeline {
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #e94560, #0f3460);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 50px;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    background: #fff;
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform 0.3s;
}

body.dark .timeline-content {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.timeline-content:hover {
    transform: translateY(-5px);
}

.timeline-year {
    font-size: 1.8rem;
    font-weight: 900;
    color: #e94560;
    margin-bottom: 5px;
}

.timeline-content h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.timeline-content p {
    color: #666;
    line-height: 1.7;
    font-size: 0.95rem;
}

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

.timeline-dot {
    position: absolute;
    left: 50%;
    top: 30px;
    width: 16px;
    height: 16px;
    background: #e94560;
    border-radius: 50%;
    transform: translateX(-50%);
    border: 3px solid #fff;
    z-index: 2;
}

body.dark .timeline-dot {
    border-color: #0f0f1a;
}

/* 团队介绍 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.team-card {
    background: #fff;
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .team-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.team-card:hover {
    transform: translateY(-8px);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 15px;
    background: linear-gradient(135deg, #e94560, #0f3460);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #fff;
    font-weight: 700;
}

.team-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.team-card .role {
    color: #e94560;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

body.dark .team-card .role {
    color: #ff6b81;
}

.team-card p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.6;
}

body.dark .team-card p {
    color: #aaa;
}

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

.product-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .product-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.product-card-top {
    padding: 30px 30px 0;
    text-align: center;
}

.product-card-top svg {
    width: 120px;
    height: 120px;
}

.product-card-body {
    padding: 30px;
}

.product-card-body h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-card-body p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 15px;
}

body.dark .product-card-body p {
    color: #aaa;
}

.product-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.product-tag {
    background: rgba(233, 69, 96, 0.1);
    color: #e94560;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

body.dark .product-tag {
    background: rgba(255, 107, 129, 0.1);
    color: #ff6b81;
}

/* 产品优势 */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.5);
    transition: transform 0.3s, box-shadow 0.3s;
}

body.dark .advantage-card {
    background: rgba(26, 26, 46, 0.6);
    border-color: rgba(255, 255, 255, 0.05);
}

.advantage-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
}

.advantage-card svg {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-card p {
    color: #666;
    line-height: 1.7;
    font-size: 0.95rem;
}

body.dark .advantage-card p {
    color: #aaa;
}

/* 解决方案 */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.solution-card {
    background: #fff;
    border-radius: 20px;
    padding: 35px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .solution-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.solution-card:hover {
    transform: translateY(-8px);
}

.solution-card svg {
    width: 50px;
    height: 50px;
    margin-bottom: 15px;
}

.solution-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.solution-card p {
    color: #666;
    line-height: 1.7;
}

body.dark .solution-card p {
    color: #aaa;
}

/* 行业应用 */
.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.industry-card {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 18px;
    padding: 30px 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: transform 0.3s;
}

body.dark .industry-card {
    background: rgba(26, 26, 46, 0.5);
    border-color: rgba(255, 255, 255, 0.05);
}

.industry-card:hover {
    transform: translateY(-5px);
}

.industry-card svg {
    width: 50px;
    height: 50px;
    margin-bottom: 12px;
}

.industry-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
}

/* 案例展示 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .case-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.case-card:hover {
    transform: translateY(-8px);
}

.case-card-top {
    padding: 30px 30px 0;
    text-align: center;
}

.case-card-top svg {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: 12px;
}

.case-card-body {
    padding: 25px 30px 30px;
}

.case-card-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.case-card-body p {
    color: #666;
    line-height: 1.7;
    font-size: 0.95rem;
}

body.dark .case-card-body p {
    color: #aaa;
}

.case-card-body .case-tag {
    display: inline-block;
    background: rgba(233, 69, 96, 0.1);
    color: #e94560;
    padding: 3px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-top: 10px;
}

/* 合作伙伴 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 25px;
    align-items: center;
}

.partner-item {
    background: #fff;
    border-radius: 16px;
    padding: 25px 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.04);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .partner-item {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.partner-item svg {
    width: 60px;
    height: 60px;
    margin-bottom: 10px;
}

.partner-item span {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    color: #444;
}

body.dark .partner-item span {
    color: #bbb;
}

/* 客户评价 */
.review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.review-card {
    background: #fff;
    border-radius: 20px;
    padding: 35px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform 0.3s;
}

body.dark .review-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.review-card:hover {
    transform: translateY(-5px);
}

.review-stars {
    color: #f5a623;
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.review-text {
    color: #555;
    line-height: 1.8;
    font-style: italic;
    margin-bottom: 15px;
    font-size: 0.95rem;
}

body.dark .review-text {
    color: #bbb;
}

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

.review-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e94560, #0f3460);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
}

.review-name {
    font-weight: 700;
    font-size: 0.95rem;
}

.review-company {
    color: #888;
    font-size: 0.8rem;
}

body.dark .review-company {
    color: #999;
}

/* 新闻资讯 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .news-card {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.news-card:hover {
    transform: translateY(-8px);
}

.news-card-top {
    padding: 25px 25px 0;
    text-align: center;
}

.news-card-top svg {
    width: 100%;
    max-width: 260px;
    height: auto;
    border-radius: 10px;
}

.news-card-body {
    padding: 25px;
}

.news-date {
    color: #e94560;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 8px;
}

body.dark .news-date {
    color: #ff6b81;
}

.news-card-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-card-body p {
    color: #666;
    line-height: 1.7;
    font-size: 0.9rem;
}

body.dark .news-card-body p {
    color: #aaa;
}

.news-card-body a {
    color: #e94560;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    margin-top: 10px;
    transition: color 0.3s;
}

.news-card-body a:hover {
    color: #0f3460;
}

/* 相关文章 */
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.related-card {
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: transform 0.3s;
}

body.dark .related-card {
    background: rgba(26, 26, 46, 0.5);
    border-color: rgba(255, 255, 255, 0.05);
}

.related-card:hover {
    transform: translateY(-5px);
}

.related-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.related-card p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.6;
}

body.dark .related-card p {
    color: #aaa;
}

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

.faq-item {
    background: #fff;
    border-radius: 16px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: box-shadow 0.3s;
}

body.dark .faq-item {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.05rem;
    transition: background 0.3s;
}

.faq-question:hover {
    background: rgba(233, 69, 96, 0.03);
}

.faq-icon {
    font-size: 1.4rem;
    transition: transform 0.3s;
    color: #e94560;
}

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

.faq-answer {
    padding: 0 25px 20px;
    color: #555;
    line-height: 1.8;
    display: none;
    font-size: 0.95rem;
}

body.dark .faq-answer {
    color: #aaa;
}

.faq-item.active .faq-answer {
    display: block;
}

/* HowTo */
.howto-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.howto-step {
    background: #fff;
    border-radius: 20px;
    padding: 30px 25px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: transform 0.3s;
}

body.dark .howto-step {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.howto-step:hover {
    transform: translateY(-5px);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #e94560, #0f3460);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 900;
    font-size: 1.5rem;
    margin: 0 auto 15px;
}

.howto-step h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.howto-step p {
    color: #666;
    line-height: 1.7;
    font-size: 0.9rem;
}

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

/* 联系我们 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 20px;
}

.contact-info p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

body.dark .contact-info p {
    color: #aaa;
}

.contact-info svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.contact-form {
    background: #fff;
    border-radius: 20px;
    padding: 35px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

body.dark .contact-form {
    background: #1a1a2e;
    border-color: rgba(255, 255, 255, 0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    font-size: 0.95rem;
    transition: border-color 0.3s;
    background: #fafafa;
}

body.dark .form-group input,
body.dark .form-group textarea {
    background: #2a2a3e;
    border-color: #3a3a4e;
    color: #e0e0e0;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #e94560;
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-submit {
    background: linear-gradient(135deg, #e94560, #0f3460);
    color: #fff;
    padding: 14px 40px;
    border: none;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    font-size: 1rem;
}

.form-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(233, 69, 96, 0.4);
}

/* 友情链接 */
.friend-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px 0;
}

.friend-links a {
    color: #555;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
    padding: 5px 10px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.3);
}

body.dark .friend-links a {
    color: #aaa;
    background: rgba(255, 255, 255, 0.05);
}

.friend-links a:hover {
    color: #e94560;
    background: rgba(233, 69, 96, 0.08);
}

/* 网站地图 */
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
}

.sitemap-col h4 {
    font-weight: 700;
    margin-bottom: 15px;
    font-size: 1.05rem;
    color: #e94560;
}

body.dark .sitemap-col h4 {
    color: #ff6b81;
}

.sitemap-col ul {
    list-style: none;
}

.sitemap-col li {
    margin-bottom: 8px;
}

.sitemap-col a {
    color: #555;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

body.dark .sitemap-col a {
    color: #aaa;
}

.sitemap-col a:hover {
    color: #e94560;
}

/* Footer */
footer {
    background: #1a1a2e;
    color: #c0c0d0;
    padding: 60px 0 30px;
    margin-top: 60px;
}

body.dark footer {
    background: #0a0a15;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    font-size: 1.8rem;
    margin-bottom: 15px;
    display: inline-block;
}

.footer-brand p {
    line-height: 1.8;
    font-size: 0.95rem;
    color: #999;
}

.footer-col h4 {
    color: #fff;
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

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

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

.footer-col a {
    color: #999;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #e94560;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 0.85rem;
    color: #777;
}

.footer-bottom-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-bottom-links a {
    color: #777;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-bottom-links a:hover {
    color: #e94560;
}

/* 返回顶部 */
.back-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, #e94560, #0f3460);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(233, 69, 96, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.3s;
    z-index: 999;
}

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

.back-top:hover {
    transform: translateY(-5px);
}

/* 搜索弹窗 */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
}

.search-overlay.active {
    display: flex;
}

.search-modal {
    background: #fff;
    border-radius: 30px;
    padding: 40px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.2);
}

body.dark .search-modal {
    background: #1a1a2e;
}

.search-modal input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 15px;
    font-size: 1.1rem;
    margin-bottom: 20px;
    transition: border-color 0.3s;
    background: #fafafa;
}

body.dark .search-modal input {
    background: #2a2a3e;
    border-color: #3a3a4e;
    color: #e0e0e0;
}

.search-modal input:focus {
    outline: none;
    border-color: #e94560;
}

.search-close {
    background: #e94560;
    color: #fff;
    border: none;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    float: right;
    transition: transform 0.3s;
}

.search-close:hover {
    transform: scale(1.05);
}

/* 响应式 */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        flex-direction: row;
        padding-left: 50px;
    }

    .timeline-content {
        width: 100%;
    }

    .timeline-dot {
        left: 20px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        padding: 25px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
        gap: 20px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    body.dark .nav-links.active {
        background: rgba(15, 15, 26, 0.98);
    }

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

    .section-title {
        font-size: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .hero-card {
        padding: 25px;
    }

    .hero-card-svg {
        width: 140px;
        height: 140px;
    }
}

@media (max-width: 480px) {
    .hero-text h1 {
        font-size: 2rem;
    }

    .btn-primary,
    .btn-secondary {
        padding: 12px 25px;
        font-size: 0.9rem;
    }

    .container {
        padding: 0 15px;
    }
}

/* 暗黑模式滚动条 */
body.dark::-webkit-scrollbar {
    width: 8px;
}

body.dark::-webkit-scrollbar-track {
    background: #0f0f1a;
}

body.dark::-webkit-scrollbar-thumb {
    background: #3a3a4e;
    border-radius: 10px;
}

body.dark::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 导航高亮 */
.nav-links a.active {
    color: #e94560 !important;
}

.nav-links a.active::after {
    width: 100% !important;
}

/* 滚动动画 */
.brand-card,
.product-card,
.advantage-card,
.solution-card,
.industry-card,
.case-card,
.review-card,
.news-card,
.team-card,
.partner-item,
.howto-step,
.related-card,
.timeline-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}