/* ===== 全局样式 ===== */
:root {
    --primary-color: #00d4ff;
    --primary-dark: #0099cc;
    --secondary-color: #667eea;
    --accent-color: #764ba2;
    --bg-dark: #0a0e27;
    --bg-darker: #050816;
    --bg-card: rgba(255, 255, 255, 0.05);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border-color: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-bg: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.section {
    padding: 80px 0;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    margin-left: 10px;
}

.logo-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

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

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

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

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

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

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* ===== Hero区域 ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-bg);
    z-index: 0;
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 20px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-tags {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.tag {
    padding: 10px 25px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--primary-color);
    transition: var(--transition);
}

.tag:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--primary-color);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s backwards;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.scroll-indicator span {
    display: block;
    width: 20px;
    height: 30px;
    border: 2px solid var(--primary-color);
    border-radius: 10px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

/* ===== 通用部分样式 ===== */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ===== 关于我们预览 ===== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.about-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.about-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== 业务预览 ===== */
.business-preview {
    background: var(--bg-dark);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.business-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 35px;
    transition: var(--transition);
}

.business-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.business-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.business-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
}

.business-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
}

.business-flow {
    padding: 15px;
    background: rgba(0, 212, 255, 0.05);
    border-radius: 10px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--primary-color);
}

.business-flow span {
    color: var(--text-secondary);
}

.business-features {
    list-style: none;
    margin-bottom: 25px;
}

.business-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.business-features i {
    color: var(--primary-color);
    margin-right: 10px;
}

/* ===== 核心优势 ===== */
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.advantage-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.advantage-number {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 3rem;
    font-weight: 700;
    color: rgba(0, 212, 255, 0.1);
}

.advantage-item h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

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

/* ===== 案例预览 ===== */
.cases-preview {
    background: var(--bg-dark);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 35px;
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.case-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 20px;
}

.case-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.case-list p {
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.case-list ul {
    list-style: none;
}

.case-list li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding-left: 20px;
    position: relative;
}

.case-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ===== 联系预览 ===== */
.contact-info {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    transition: var(--transition);
}

.contact-item:hover {
    border-color: var(--primary-color);
}

.contact-item i {
    font-size: 2rem;
    color: var(--primary-color);
}

.contact-item h4 {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.contact-item p {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-block;
    padding: 12px 35px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

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

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

/* ===== 页脚 ===== */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 15px;
}

.footer-brand .logo {
    margin-left: 15px;
}

.footer-links h4 {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom .icp {
    margin-top: 10px;
}

.footer-bottom .icp a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.footer-bottom .icp a:hover {
    color: var(--primary-color);
}

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

@keyframes scroll {
    0% {
        opacity: 1;
        top: 5px;
    }
    100% {
        opacity: 0;
        top: 15px;
    }
}

/* ===== 增强动画效果 ===== */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

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

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 212, 255, 0.6);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes borderGlow {
    0%, 100% {
        border-color: rgba(0, 212, 255, 0.3);
    }
    50% {
        border-color: rgba(0, 212, 255, 0.8);
    }
}

@keyframes textGlow {
    0%, 100% {
        text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
    }
    50% {
        text-shadow: 0 0 20px rgba(0, 212, 255, 0.8), 0 0 30px rgba(102, 126, 234, 0.6);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* ===== 光标跟随效果 ===== */
.cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 9999;
    transition: opacity 0.3s ease;
}

/* ===== 按钮波纹效果 ===== */
.btn {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===== 增强卡片效果 ===== */
.about-card,
.business-card,
.case-card {
    position: relative;
    overflow: hidden;
}

.about-card::before,
.business-card::before,
.case-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(0, 212, 255, 0.03),
        transparent
    );
    transform: rotate(45deg);
    transition: all 0.5s ease;
    opacity: 0;
}

.about-card:hover::before,
.business-card:hover::before,
.case-card:hover::before {
    opacity: 1;
    animation: shimmer 1.5s ease-in-out;
}

/* ===== 增强导航栏效果 ===== */
.navbar.scrolled {
    background: rgba(5, 8, 22, 0.98) !important;
    box-shadow: 0 5px 30px rgba(0, 212, 255, 0.2);
    border-bottom-color: rgba(0, 212, 255, 0.3);
}

.nav-menu a {
    position: relative;
    overflow: hidden;
}

.nav-menu a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu a:hover::before,
.nav-menu a.active::before {
    width: 100%;
}

/* ===== Hero增强效果 ===== */
.hero-title {
    animation: fadeInUp 1s ease, textGlow 3s ease-in-out infinite;
}

.hero-stats {
    animation: fadeInUp 1s ease 0.6s backwards, float 6s ease-in-out infinite;
}

.stat-number {
    animation: pulse 2s ease-in-out infinite;
}

/* ===== 流动线条画布 ===== */
#flow-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    pointer-events: none;
}

/* ===== 增强标签效果 ===== */
.tag {
    position: relative;
    overflow: hidden;
    animation: scaleIn 0.5s ease backwards;
}

.tag:nth-child(1) { animation-delay: 0.1s; }
.tag:nth-child(2) { animation-delay: 0.2s; }
.tag:nth-child(3) { animation-delay: 0.3s; }

.tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.tag:hover::before {
    left: 100%;
}

/* ===== 增强图标效果 ===== */
.about-icon,
.business-icon,
.case-icon {
    position: relative;
}

.about-icon::after,
.business-icon::after,
.case-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    border: 2px solid rgba(0, 212, 255, 0.3);
    transform: translate(-50%, -50%);
    animation: pulse 2s ease-in-out infinite;
}

/* ===== 增强按钮效果 ===== */
.btn-primary {
    position: relative;
    overflow: hidden;
    animation: glow 3s ease-in-out infinite;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

/* ===== 增强页脚效果 ===== */
.footer {
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    animation: shimmer 3s ease-in-out infinite;
    background-size: 200% 100%;
}

/* ===== 响应式设计 ===== */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
}