/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    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(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0;
}

.logo {
    display: flex;
    align-items: center;
    height: auto;
}

.logo-image {
    height: 120px;
    width: auto;
    object-fit: contain;
}

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

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

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

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* 按钮样式 */
.btn-primary, .btn-secondary, .btn-outline {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
}

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

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

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

/* 英雄区 */
.hero {
    min-height: 100vh;
    padding: 0;
    color: white;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 背景图片 */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    background-image: url('image/背景图.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
}

/* 深色蒙版层 */
.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    padding: 0 40px;
}

.hero-content-centered {
    text-align: center;
    animation: fadeInUp 1s ease;
    padding: 80px 0;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 2rem;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.highlight {
    color: white;
    position: relative;
}

.hero-button-wrapper {
    margin-top: 2rem;
    margin-bottom: 0;
}

.hero-explore-btn {
    display: inline-block;
    padding: 1rem 3rem;
    background: white;
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-explore-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    background: #f8f9fa;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 0;
    line-height: 1.8;
    color: white;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.3);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 行业解决方案 */
.solutions {
    padding: 100px 0;
    background: white;
}

.solutions-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.solutions-image {
    position: sticky;
    top: 100px;
}

.solution-main-image {
    width: 100%;
    height: auto;
    border-radius: 16px;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: opacity 0.3s ease;
}

.solutions-content {
    padding-left: 2rem;
}

.solutions-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 3rem;
    text-align: center;
}

.solutions-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.solution-item {
    border-bottom: 1px solid #e5e7eb;
    transition: all 0.3s ease;
}

.solution-item:last-child {
    border-bottom: none;
}

.solution-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.solution-header:hover {
    color: var(--primary-color);
}

.solution-item-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1f2937;
    margin: 0;
    transition: color 0.3s ease;
}

.solution-arrow {
    font-size: 0.8rem;
    color: #6b7280;
    transition: transform 0.3s ease, color 0.3s ease;
}

.solution-item.active .solution-arrow {
    color: var(--primary-color);
    transform: rotate(180deg);
}

.solution-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 0;
}

.solution-content.active {
    max-height: 500px;
    padding: 0 0 1.5rem 0;
}

.solution-description {
    font-size: 1rem;
    line-height: 1.8;
    color: #4b5563;
    margin-bottom: 1.5rem;
}

.solution-button {
    padding: 0.75rem 2rem;
    background: transparent;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    color: #1f2937;
    cursor: pointer;
    transition: all 0.3s ease;
}

.solution-button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

/* 案例展示 */
.cases {
    padding: 80px 0;
    background: white;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.case-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.case-image-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-image-img {
    transform: scale(1.05);
}

.case-content {
    padding: 1.5rem;
}

.case-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.case-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.case-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 设计资源 */
.resources {
    padding: 100px 0;
    background: white;
}

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

.resources-stats {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.stat-card {
    text-align: left;
}

.stat-card .stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-card .stat-label {
    font-size: 1.2rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.resources-carousel {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.carousel-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
}

/* 企业级安全保障 */
.security {
    padding: 100px 0;
    background: white;
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
    margin-top: 4rem;
}

.security-card {
    text-align: center;
    transition: transform 0.3s ease;
}

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

.security-icon {
    width: 120px;
    height: 120px;
    background: #374151;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    padding: 1.5rem;
}

.security-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.security-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.security-subtitle {
    font-size: 1rem;
    font-weight: 500;
    color: #6b7280;
    margin-bottom: 1rem;
}

.security-description {
    font-size: 0.95rem;
    line-height: 1.8;
    color: #4b5563;
    text-align: left;
}

/* 定价区域 */
.pricing {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.pricing-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-period {
    color: var(--text-secondary);
    font-size: 1rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

/* 联系销售按钮包装器 */
.contact-sales-wrapper {
    position: relative;
}

/* 二维码弹窗 */
.qr-popup {
    display: none;
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border-radius: 12px;
    padding: 1rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    text-align: center;
    animation: popupFadeIn 0.3s ease;
    min-width: 200px;
}

.qr-popup.active {
    display: block;
}

.qr-popup::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid white;
}

@keyframes popupFadeIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.qr-image-small {
    width: 180px;
    height: 180px;
    object-fit: contain;
    margin-bottom: 0.5rem;
    border-radius: 8px;
    display: block;
}

.qr-text-small {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 页脚 */
.footer {
    background: var(--bg-dark);
    color: white;
    padding: 40px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.footer-section {
    text-align: center;
}

.footer-logo {
    margin-bottom: 1rem;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-logo-image {
    height: 100%;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.15rem;
    }
    
    .hero-badge {
        top: 80px;
        right: 20px;
        font-size: 0.85rem;
        padding: 0.4rem 1rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .solutions-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .solutions-image {
        position: relative;
        top: 0;
    }
    
    .solutions-content {
        padding-left: 0;
    }
    
    .resources-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .resources-carousel {
        height: 500px;
    }
    
    .security-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .features-grid,
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: white;
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
        gap: 1.5rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-actions {
        display: none;
    }
    
    .nav-actions.mobile-active {
        display: flex;
        flex-direction: column;
        width: 100%;
        margin-top: 1rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: 90vh;
    }
    
    .hero-content-centered {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.4;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }
    
    .hero-badge {
        top: 70px;
        right: 15px;
        font-size: 0.75rem;
        padding: 0.35rem 0.85rem;
    }
    
    .hero .container {
        padding: 0 20px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        padding: 0 20px;
    }
    
    .solutions-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .solutions-image {
        position: relative;
        top: 0;
    }
    
    .solutions-content {
        padding-left: 0;
    }
    
    .solutions-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .resources-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .resources-carousel {
        height: 400px;
    }
    
    .stat-card .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-card .stat-label {
        font-size: 1rem;
    }
    
    .feature-visual {
        height: 180px;
    }
    
    .security-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .security-icon {
        width: 100px;
        height: 100px;
    }
    
    .security-title {
        font-size: 1.25rem;
    }
    
    .security-subtitle {
        font-size: 0.9rem;
    }
    
    .security-description {
        font-size: 0.9rem;
    }
    
    .features-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-popup {
        bottom: calc(100% + 5px);
        min-width: 160px;
        padding: 0.75rem;
    }
    
    .qr-image-small {
        width: 140px;
        height: 140px;
    }
    
    .qr-text-small {
        font-size: 0.75rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        min-height: 85vh;
    }
    
    .hero-title {
        font-size: 1.75rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
        padding: 0 15px;
    }
    
    .hero-badge {
        top: 60px;
        right: 10px;
        font-size: 0.7rem;
        padding: 0.3rem 0.7rem;
    }
    
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .container {
        padding: 0 16px;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
    background: var(--primary-color);
    color: white;
}