/* 基础重置与全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f8f9fa;
    color: #1a1a2e;
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

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

/* 导航栏 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: background 0.3s, box-shadow 0.3s;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #1a1a2e, #e94560);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark .logo {
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo svg {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

nav a {
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 0;
    position: relative;
    transition: color 0.3s;
}

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

nav a:hover::after,
nav a.active::after {
    width: 100%;
}

body.dark nav a {
    color: #ccc;
}

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

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: #1a1a2e;
    border-radius: 2px;
    transition: all 0.3s;
}

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

@media (max-width: 768px) {
    nav {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    }

    body.dark nav {
        background: rgba(15, 15, 26, 0.98);
        border-bottom-color: rgba(255, 255, 255, 0.05);
    }

    nav.open {
        display: flex;
    }

    .menu-toggle {
        display: flex;
    }
}

/* Hero 区域 */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    padding-top: 70px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 40px 20px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, #e94560);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
    line-height: 1.8;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    color: #fff;
    box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(233, 69, 96, 0.5);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.4);
    color: #fff;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    animation: bounce 2s infinite;
    cursor: pointer;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* 通用 section */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    border-radius: 2px;
    margin: 10px auto 0;
}

.section-title p {
    font-size: 1.05rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

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

/* 品牌介绍 */
#brand {
    background: #fff;
}

body.dark #brand {
    background: #141420;
}

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

@media (max-width: 768px) {
    .brand-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

.brand-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.brand-visual svg {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

body.dark .brand-visual svg {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.brand-text h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.brand-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
}

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

.brand-stats {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: #888;
    margin-top: 5px;
}

@media (max-width: 768px) {
    .brand-stats {
        justify-content: center;
    }
}

/* 企业介绍 */
#about {
    background: #f8f9fa;
}

body.dark #about {
    background: #11111a;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

body.dark .about-content p {
    color: #bbb;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

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

.feature-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.9rem;
    color: #777;
}

body.dark .feature-card p {
    color: #999;
}

/* 品牌历史 */
#history {
    background: #fff;
}

body.dark #history {
    background: #141420;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

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

@media (max-width: 768px) {
    .timeline::before {
        left: 20px;
    }
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding: 20px 0;
    position: relative;
    width: 50%;
}

@media (max-width: 768px) {
    .timeline-item {
        width: 100%;
        padding-left: 50px;
        justify-content: flex-start;
    }
}

.timeline-item:nth-child(odd) {
    align-self: flex-start;
    justify-content: flex-start;
}

@media (max-width: 768px) {
    .timeline-item:nth-child(odd) {
        justify-content: flex-start;
    }
}

.timeline-item .dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: #e94560;
    border-radius: 50%;
    top: 28px;
    right: -8px;
    z-index: 1;
    border: 3px solid #fff;
    box-shadow: 0 0 0 3px #e94560;
}

body.dark .timeline-item .dot {
    border-color: #141420;
}

@media (max-width: 768px) {
    .timeline-item .dot {
        left: -8px;
        right: auto;
    }
}

.timeline-item:nth-child(odd) .dot {
    left: -8px;
    right: auto;
}

@media (max-width: 768px) {
    .timeline-item:nth-child(odd) .dot {
        left: -8px;
        right: auto;
    }
}

.timeline-content {
    background: #f8f9fa;
    padding: 20px 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    max-width: 300px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.timeline-content h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 5px;
    color: #e94560;
}

.timeline-content p {
    font-size: 0.9rem;
    color: #666;
}

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

/* 团队介绍 */
#team {
    background: #f8f9fa;
}

body.dark #team {
    background: #11111a;
}

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

.team-card {
    background: #fff;
    border-radius: 16px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.team-card svg {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 15px;
    background: #f0f0f0;
    padding: 8px;
}

body.dark .team-card svg {
    background: #2a2a3e;
}

.team-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.team-card .role {
    font-size: 0.85rem;
    color: #e94560;
    font-weight: 500;
    margin-bottom: 10px;
}

.team-card p {
    font-size: 0.9rem;
    color: #777;
}

body.dark .team-card p {
    color: #999;
}

/* 产品中心 */
#products {
    background: #fff;
}

body.dark #products {
    background: #141420;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.product-card {
    background: #f8f9fa;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.product-card svg {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    border-radius: 12px;
    padding: 10px;
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    color: #fff;
}

.product-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.product-card p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

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

.product-card .price {
    font-size: 1.3rem;
    font-weight: 800;
    color: #e94560;
    margin-bottom: 10px;
}

.product-card .btn {
    font-size: 0.85rem;
    padding: 10px 24px;
}

/* 产品优势 */
#advantages {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: #fff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-item svg {
    width: 50px;
    height: 50px;
    margin-bottom: 15px;
    fill: #e94560;
}

.advantage-item h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage-item p {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.6;
}

/* 解决方案 */
#solutions {
    background: #f8f9fa;
}

body.dark #solutions {
    background: #11111a;
}

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

.solution-card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.solution-card svg {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
    padding: 10px;
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    border-radius: 12px;
    color: #fff;
}

.solution-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

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

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

/* 行业应用 */
#applications {
    background: #fff;
}

body.dark #applications {
    background: #141420;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.app-item {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.app-item:hover {
    transform: translateY(-3px);
}

.app-item svg {
    width: 40px;
    height: 40px;
    margin-bottom: 10px;
    fill: #e94560;
}

.app-item h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.app-item p {
    font-size: 0.85rem;
    color: #777;
}

body.dark .app-item p {
    color: #999;
}

/* 案例展示 */
#cases {
    background: #f8f9fa;
}

body.dark #cases {
    background: #11111a;
}

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

.case-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.case-card svg {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.case-body {
    padding: 20px;
}

.case-body h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

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

/* 合作伙伴 */
#partners {
    background: #fff;
}

body.dark #partners {
    background: #141420;
}

.partner-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    align-items: center;
}

.partner-logo {
    width: 120px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: opacity 0.3s;
    filter: grayscale(1);
}

body.dark .partner-logo {
    filter: grayscale(1) brightness(0.8);
}

.partner-logo:hover {
    opacity: 1;
    filter: none;
}

.partner-logo svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 客户评价 */
#testimonials {
    background: #f8f9fa;
}

body.dark #testimonials {
    background: #11111a;
}

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

.testimonial-card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.testimonial-card .stars {
    color: #f59e0b;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.testimonial-card blockquote {
    font-size: 1rem;
    line-height: 1.7;
    color: #555;
    margin-bottom: 15px;
    font-style: italic;
}

body.dark .testimonial-card blockquote {
    color: #bbb;
}

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

.testimonial-author svg {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f0f0f0;
    padding: 6px;
}

body.dark .testimonial-author svg {
    background: #2a2a3e;
}

.testimonial-author .name {
    font-weight: 600;
    font-size: 0.95rem;
}

.testimonial-author .title {
    font-size: 0.8rem;
    color: #888;
}

/* 新闻资讯 */
#news {
    background: #fff;
}

body.dark #news {
    background: #141420;
}

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

.news-card {
    background: #f8f9fa;
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

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

.news-card svg {
    width: 100%;
    height: 180px;
    object-fit: cover;
    display: block;
}

.news-body {
    padding: 20px;
}

.news-body .date {
    font-size: 0.8rem;
    color: #888;
    margin-bottom: 8px;
}

.news-body h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

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

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

.news-body .read-more {
    color: #e94560;
    font-weight: 500;
    font-size: 0.9rem;
    display: inline-block;
    margin-top: 10px;
}

/* 相关文章 */
#related {
    background: #f8f9fa;
}

body.dark #related {
    background: #11111a;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

.related-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

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

.related-card:hover {
    transform: translateY(-3px);
}

.related-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.related-card p {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.5;
}

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

/* FAQ */
#faq {
    background: #fff;
}

body.dark #faq {
    background: #141420;
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 15px 0;
    cursor: pointer;
}

body.dark .faq-item {
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.05rem;
}

.faq-question .icon {
    font-size: 1.2rem;
    transition: transform 0.3s;
    color: #e94560;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.4s;
    opacity: 0;
    padding-top: 0;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    opacity: 1;
    padding-top: 15px;
}

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

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

/* HowTo */
#howto {
    background: #f8f9fa;
}

body.dark #howto {
    background: #11111a;
}

.howto-steps {
    max-width: 700px;
    margin: 0 auto;
    counter-reset: step;
}

.howto-step {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.howto-step .step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e94560, #ff6b6b);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.howto-step .step-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.howto-step .step-content p {
    font-size: 0.9rem;
    color: #666;
    line-height: 1.6;
}

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

/* 联系我们 */
#contact {
    background: #fff;
}

body.dark #contact {
    background: #141420;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-info p {
    font-size: 1rem;
    color: #555;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.contact-info svg {
    width: 20px;
    height: 20px;
    fill: #e94560;
    flex-shrink: 0;
}

.contact-form {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

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

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 15px;
    background: #fff;
    transition: border-color 0.3s;
    font-family: inherit;
}

body.dark .contact-form input,
body.dark .contact-form textarea {
    background: #2a2a3e;
    border-color: rgba(255, 255, 255, 0.1);
    color: #e0e0e0;
}

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

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

.contact-form .btn {
    width: 100%;
    justify-content: center;
}

/* 友情链接 */
#links {
    background: #f8f9fa;
    padding: 40px 0;
}

body.dark #links {
    background: #11111a;
}

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

.links-grid a {
    font-size: 0.85rem;
    color: #666;
    padding: 4px 12px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.03);
    transition: all 0.3s;
}

body.dark .links-grid a {
    color: #999;
    background: rgba(255, 255, 255, 0.03);
}

.links-grid a:hover {
    color: #e94560;
    background: rgba(233, 69, 96, 0.1);
}

/* 网站地图 */
#sitemap {
    background: #fff;
    padding: 40px 0;
}

body.dark #sitemap {
    background: #141420;
}

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

.sitemap-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #e94560;
}

.sitemap-col a {
    display: block;
    font-size: 0.85rem;
    color: #666;
    padding: 4px 0;
    transition: color 0.3s;
}

body.dark .sitemap-col a {
    color: #999;
}

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

/* Footer */
footer {
    background: #1a1a2e;
    color: #ccc;
    padding: 40px 0 20px;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #fff;
}

.footer-col p,
.footer-col a {
    font-size: 0.85rem;
    color: #aaa;
    line-height: 1.8;
    display: block;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 0.8rem;
    color: #888;
}

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

/* 暗黑模式切换按钮 */
#darkToggle {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: #1a1a2e;
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.3s;
}

body.dark #darkToggle {
    background: #e94560;
}

#darkToggle:hover {
    transform: scale(1.1);
}

/* 返回顶部按钮 */
#backTop {
    position: fixed;
    bottom: 90px;
    right: 30px;
    z-index: 999;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(233, 69, 96, 0.8);
    color: #fff;
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
    transition: all 0.3s;
}

#backTop.show {
    display: flex;
}

#backTop:hover {
    background: #e94560;
    transform: translateY(-3px);
}

/* 搜索弹窗 */
#searchModal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    align-items: center;
    justify-content: center;
}

#searchModal.open {
    display: flex;
}

.search-box {
    background: #fff;
    border-radius: 20px;
    padding: 30px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

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

.search-box input {
    width: 100%;
    padding: 14px 20px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    font-size: 1.1rem;
    margin-bottom: 15px;
    background: transparent;
    color: inherit;
}

body.dark .search-box input {
    border-color: rgba(255, 255, 255, 0.1);
}

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

.search-box .close-btn {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 10px;
}

.search-box .close-btn button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #888;
}

/* 轮播指示器 */
#hero .banner-dots {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.banner-dot.active {
    background: #e94560;
    transform: scale(1.2);
}

/* 数字动画辅助 */
.count-up {
    display: inline-block;
}

/* 响应式（极小屏幕） */
@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    .section-title h2 {
        font-size: 1.8rem;
    }
    .team-grid,
    .product-grid,
    .case-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
}