/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

/* 背景动画 */
.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.floating-bubble {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 8s ease-in-out infinite;
}

.bubble-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.bubble-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.bubble-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

.bubble-4 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: 1s;
}

.bubble-5 {
    width: 70px;
    height: 70px;
    top: 70%;
    right: 5%;
    animation-delay: 3s;
}

.bubble-6 {
    width: 90px;
    height: 90px;
    top: 10%;
    right: 50%;
    animation-delay: 5s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.nav-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #667eea;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #667eea;
    transition: width 0.3s ease;
}

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

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

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容 */
.main-content {
    padding-top: 80px;
}

/* Hero区域 */
.hero-section {
    padding: 4rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: linear-gradient(135deg, #ff6b6b, #ffa500);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    animation: pulse 2s infinite;
}

.hero-badge i {
    margin-right: 0.5rem;
    animation: spin 3s linear infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: white;
}

.gradient-text {
    background: linear-gradient(135deg, #ff6b6b, #ffa500, #ffd700);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        filter: hue-rotate(0deg);
    }
    50% {
        filter: hue-rotate(30deg);
    }
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

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

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #ff6b6b;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Hero视觉元素 */
.hero-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.floating-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.floating-card i {
    font-size: 2rem;
    color: #667eea;
}

.floating-card span {
    font-weight: 600;
    color: #333;
}

.card-1 {
    top: 20%;
    left: 10%;
    animation: floatCard 6s ease-in-out infinite;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation: floatCard 6s ease-in-out infinite 2s;
}

.card-3 {
    bottom: 20%;
    left: 30%;
    animation: floatCard 6s ease-in-out infinite 4s;
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-15px) rotate(5deg);
    }
}

/* 项目展示区域 */
.projects-section {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.section-header p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.project-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-bg {
    opacity: 1;
}

.project-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: white;
    position: relative;
    z-index: 1;
}

.project-content {
    position: relative;
    z-index: 1;
}

.project-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
}

.project-content p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.project-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.feature-tag {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.project-link:hover {
    gap: 1rem;
    color: #764ba2;
}

/* 关于我们区域 */
.about-section {
    padding: 4rem 0;
}

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

.about-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.about-header p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.about-text p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.about-stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.about-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ff6b6b, #ffa500);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
}

.stat-info .stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ff6b6b;
    margin-bottom: 0.2rem;
}

.stat-info .stat-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* 关于我们视觉元素 */
.about-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-element {
    position: absolute;
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: floatElement 8s ease-in-out infinite;
}

.element-1 {
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.element-2 {
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.element-3 {
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes floatElement {
    0%, 100% {
        transform: translateY(0px) scale(1);
    }
    50% {
        transform: translateY(-20px) scale(1.1);
    }
}

/* 联系我们区域 */
.contact-section {
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.contact-content {
    display: flex;
    justify-content: center;
}

.contact-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-header {
    text-align: center;
    margin-bottom: 2rem;
}

.contact-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.contact-header p {
    color: #666;
    font-size: 1.1rem;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.contact-details h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.contact-details p {
    color: #666;
    margin-bottom: 0.3rem;
}

/* 页脚 */
.footer {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 2rem 0;
    backdrop-filter: blur(10px);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.footer-logo i {
    margin-right: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #667eea;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 60px;
        right: 20px;
        background: rgba(255,255,255,0.98);
        box-shadow: 0 8px 24px rgba(0,0,0,0.08);
        border-radius: 12px;
        flex-direction: column;
        gap: 1.2rem;
        padding: 1.2rem 2rem;
        z-index: 1001;
    }
    .nav-menu.active {
        display: flex;
    }
    .nav-toggle {
        display: flex;
    }
    .main-content {
        padding-top: 70px;
    }
    .hero-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .hero-title {
        font-size: 2rem;
    }
    .hero-description {
        font-size: 1rem;
    }
    .hero-stats {
        flex-direction: column;
        gap: 0.8rem;
    }
    .about-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .about-header h2 {
        font-size: 1.5rem;
    }
    .about-header p {
        font-size: 1rem;
    }
    .about-stats {
        flex-direction: column;
        gap: 0.8rem;
    }
    .contact-info {
        grid-template-columns: 1fr;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
    .project-card {
        padding: 1rem;
    }
    .contact-card {
        padding: 1.2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 8px;
    }
    .hero-title {
        font-size: 1.3rem;
    }
    .hero-description {
        font-size: 0.95rem;
    }
    .footer-content {
        font-size: 0.9rem;
    }
    .project-card {
        padding: 0.7rem;
    }
    .contact-card {
        padding: 0.7rem;
    }
}

/* 禁止横向滚动 */
html, body {
    max-width: 100vw;
    overflow-x: hidden;
}

/* 触摸反馈优化 */
button, a, .project-card, .contact-item, .floating-card {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8, #6a4190);
}