/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00d4ff;
    --secondary-color: #7c3aed;
    --accent-color: #f59e0b;
    --bg-dark: #0a0e27;
    --bg-darker: #050815;
    --bg-card: #0f1629;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border-color: #1a2332;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: block;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: scale(1.1) rotate(5deg);
}

.logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    transition: all 0.3s;
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

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

.particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 4rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 通用区块样式 */
section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* 关于我们 */
.about {
    background: var(--bg-darker);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.advantage-list {
    list-style: none;
}

.advantage-list li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.advantage-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.advantage-list strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.advantage-list p {
    color: var(--text-secondary);
    margin: 0;
}

.about-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s;
}

.tech-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.tech-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tech-card h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.tech-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 产品服务 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(0, 212, 255, 0.2);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.service-icon svg {
    width: 30px;
    height: 30px;
    stroke-width: 2;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card > p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.service-features li {
    color: var(--text-secondary);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.service-link:hover {
    transform: translateX(5px);
}

/* 解决方案 */
.solutions {
    background: var(--bg-darker);
}

.solutions-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.75rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 1rem;
    font-weight: 500;
}

.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.solution-detail {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
}

.solution-detail h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.solution-detail > p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.feature-item {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    padding: 1.5rem;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s;
}

.feature-item:hover {
    background: rgba(0, 212, 255, 0.2);
    transform: translateY(-3px);
}

/* 联系我们 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.info-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-item h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.info-item p {
    color: var(--text-secondary);
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-section p {
    color: var(--text-secondary);
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
}

.social-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* 响应式设计 */

/* 平板设备 (768px - 1024px) */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }

    .hero-title {
        font-size: 3rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动设备 (最大768px) */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    /* 导航栏优化 */
    .navbar {
        padding: 0.75rem 0;
    }

    .nav-brand {
        font-size: 1.2rem;
    }

    .logo-icon {
        width: 35px;
        height: 35px;
    }

    .logo-text {
        font-size: 1rem;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        flex-direction: column;
        background: var(--bg-card);
        width: 100%;
        padding: 2rem 20px;
        transition: left 0.3s ease;
        border-top: 1px solid var(--border-color);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-menu li:last-child {
        border-bottom: none;
    }

    .nav-menu a {
        display: block;
        padding: 1rem 0;
        font-size: 1.1rem;
        width: 100%;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
        flex-direction: column;
        gap: 5px;
        padding: 5px;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    /* 英雄区域优化 */
    .hero {
        min-height: 90vh;
        padding-top: 70px;
        padding-bottom: 3rem;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
        margin-bottom: 1rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }

    .btn {
        width: 100%;
        padding: 1rem 1.5rem;
        font-size: 1rem;
        text-align: center;
        min-height: 48px; /* 触摸友好 */
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        margin-top: 3rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-label {
        font-size: 0.85rem;
    }

    /* 区块间距优化 */
    section {
        padding: 3rem 0;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

    .section-tag {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }

    .section-title {
        font-size: 1.75rem;
        line-height: 1.3;
    }

    .section-description {
        font-size: 0.95rem;
        line-height: 1.6;
    }

    /* 关于我们优化 */
    .about-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .about-text h3 {
        font-size: 1.3rem;
    }

    .about-text p {
        font-size: 0.95rem;
    }

    .advantage-list li {
        margin-bottom: 1.2rem;
    }

    .advantage-icon {
        font-size: 1.5rem;
    }

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

    .tech-card {
        padding: 1.5rem;
    }

    .tech-icon {
        font-size: 2.5rem;
    }

    /* 产品服务优化 */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .service-card {
        padding: 2rem 1.5rem;
    }

    .service-icon {
        width: 50px;
        height: 50px;
    }

    .service-icon svg {
        width: 25px;
        height: 25px;
    }

    .service-card h3 {
        font-size: 1.3rem;
    }

    .service-card > p {
        font-size: 0.95rem;
    }

    .service-features li {
        font-size: 0.9rem;
        padding: 0.4rem 0;
    }

    /* 解决方案优化 */
    .solutions-tabs {
        flex-direction: column;
        gap: 0.75rem;
        margin-bottom: 2rem;
    }

    .tab-btn {
        width: 100%;
        padding: 1rem;
        font-size: 1rem;
        min-height: 48px;
        text-align: center;
    }

    .solution-detail {
        padding: 2rem 1.5rem;
    }

    .solution-detail h3 {
        font-size: 1.5rem;
    }

    .solution-detail > p {
        font-size: 1rem;
    }

    .solution-features {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .feature-item {
        padding: 1.2rem;
        font-size: 0.95rem;
    }

    /* 联系我们优化 */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .contact-info {
        gap: 1.5rem;
    }

    .info-item {
        gap: 1rem;
    }

    .info-icon {
        width: 45px;
        height: 45px;
        font-size: 1.5rem;
    }

    .info-item h4 {
        font-size: 1.1rem;
    }

    .info-item p {
        font-size: 0.95rem;
    }

    .contact-form {
        padding: 2rem 1.5rem;
    }

    .form-group input,
    .form-group textarea {
        padding: 0.9rem;
        font-size: 1rem;
        min-height: 48px; /* 触摸友好 */
    }

    /* 页脚优化 */
    .footer {
        padding: 3rem 0 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-section h4 {
        font-size: 1.1rem;
    }

    .footer-section p,
    .footer-section ul li a {
        font-size: 0.9rem;
    }

    .social-links {
        flex-wrap: wrap;
    }

    .social-link {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        min-height: 44px;
    }
}

/* 小屏手机 (最大480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .service-card,
    .tech-card,
    .solution-detail,
    .contact-form {
        padding: 1.5rem 1rem;
    }

    .nav-menu {
        padding: 1.5rem 15px;
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 100px 0 3rem;
    }

    .hero-title {
        font-size: 2.2rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    .btn,
    .tab-btn,
    .nav-menu a,
    .service-link,
    .social-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* 移除悬停效果，使用点击效果 */
    .service-card:hover,
    .tech-card:hover,
    .feature-item:hover {
        transform: none;
        border-color: var(--border-color);
    }

    .service-card:active,
    .tech-card:active,
    .feature-item:active {
        transform: scale(0.98);
        opacity: 0.9;
    }

    .btn:active {
        transform: scale(0.95);
    }

    /* 优化链接触摸 */
    a {
        -webkit-tap-highlight-color: rgba(0, 212, 255, 0.2);
    }
}

/* 移动端按钮优化 */
@media (max-width: 768px) {
    .btn {
        touch-action: manipulation; /* 减少双击缩放延迟 */
        -webkit-tap-highlight-color: rgba(0, 212, 255, 0.3);
    }

    /* 优化卡片点击 */
    .service-card,
    .tech-card {
        touch-action: manipulation;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch; /* iOS平滑滚动 */
}

/* 选中文本样式 */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}

/* 移动端性能优化 */
@media (max-width: 768px) {
    /* 优化动画性能 */
    * {
        -webkit-tap-highlight-color: transparent;
    }

    /* 优化滚动性能 */
    body {
        -webkit-overflow-scrolling: touch;
        overflow-x: hidden;
    }

    /* 减少重绘 */
    .hero-background,
    .grid-overlay,
    .particles {
        will-change: transform;
    }

    /* 优化字体渲染 */
    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 防止移动端缩放问题 */
input,
textarea,
select {
    font-size: 16px !important; /* 防止iOS自动缩放 */
}

@media (max-width: 768px) {
    input,
    textarea,
    select {
        font-size: 16px !important;
    }
}

/* 时间线样式 */
.timeline {
    margin-top: 2rem;
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-left: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: -2rem;
    width: 2px;
    background: var(--gradient-primary);
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    min-width: 80px;
    flex-shrink: 0;
}

.timeline-content h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.timeline-content p {
    color: var(--text-secondary);
    margin: 0;
}

/* 客户案例 */
.cases {
    background: var(--bg-darker);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.case-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.case-icon {
    font-size: 3rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    flex-shrink: 0;
}

.case-info h3 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-size: 1.2rem;
}

.case-industry {
    color: var(--primary-color);
    font-size: 0.875rem;
    font-weight: 500;
}

.case-description {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.case-results {
    display: flex;
    gap: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.result-item {
    display: flex;
    flex-direction: column;
}

.result-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.result-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 客户评价 */
.testimonials {
    background: var(--bg-dark);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.testimonial-rating {
    color: var(--accent-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.author-name {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.author-title {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 合作伙伴 */
.partners {
    background: var(--bg-darker);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.partner-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s;
}

.partner-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.partner-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding: 1rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 8px;
}

.partner-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: 0;
}

/* 增强解决方案特性样式 */
.solution-features .feature-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.solution-features .feature-item p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .timeline-item {
        flex-direction: column;
        gap: 1rem;
        padding-left: 1.5rem;
    }

    .timeline-year {
        font-size: 1.2rem;
        min-width: auto;
    }

    .cases-grid,
    .testimonials-grid,
    .partners-grid {
        grid-template-columns: 1fr;
    }

    .case-results {
        flex-direction: column;
        gap: 1rem;
    }

    .result-number {
        font-size: 1.5rem;
    }
}