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

:root {
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --bg-light: #fafafa;
    --bg-dark: #0a0a0a;
    --accent-color: #111111;
    --text-color: #1a1a1a;
    --text-light: #666666;
    --text-lighter: #999999;
    --border-color: #e5e5e5;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
}

html {
    scroll-behavior: smooth;
}

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

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
}

.logo {
    font-size: 20px;
    font-weight: 400;
    color: var(--secondary-color);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 48px;
}

.nav-menu a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.6);
    font-size: 13px;
    transition: color 0.3s ease;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-weight: 400;
}

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

/* 首页区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.03) 0%, transparent 50%);
}

.hero-shape {
    position: absolute;
    opacity: 0.03;
}

.shape-1 {
    width: 600px;
    height: 600px;
    border: 1px solid white;
    border-radius: 50%;
    top: -200px;
    right: -200px;
}

.shape-2 {
    width: 400px;
    height: 400px;
    border: 1px solid white;
    border-radius: 50%;
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 300px;
    height: 300px;
    border: 1px solid white;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.hero-deco-img {
    display: block;
    margin: 0 auto 24px;
    max-width: 280px;
    width: 50%;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 10;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 11px;
    margin-bottom: 40px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 500;
}

.hero-title {
    font-size: 96px;
    font-weight: 300;
    color: var(--secondary-color);
    margin-bottom: 30px;
    letter-spacing: -4px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 20px;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 60px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 18px 40px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 400;
    letter-spacing: 0.5px;
}

.cta-button.primary {
    background: var(--secondary-color);
    color: var(--primary-color);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(255, 255, 255, 0.1);
}

.cta-button.secondary {
    background: transparent;
    color: var(--secondary-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
}

.scroll-indicator {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.3);
    font-size: 20px;
    animation: bounce 2s infinite;
}

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

/* 通用区域样式 */
section {
    padding: 100px 0;
}

.section-title {
    font-size: 56px;
    font-weight: 300;
    text-align: center;
    margin-bottom: 24px;
    color: var(--primary-color);
    letter-spacing: -2px;
}

.section-title.left {
    text-align: left;
}

.section-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-lighter);
    margin-bottom: 80px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* 关于我们 */
.about {
    background: var(--bg-light);
    padding: 160px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 120px;
    align-items: center;
}

.about-text p {
    font-size: 18px;
    line-height: 2;
    color: var(--text-light);
    margin-bottom: 24px;
    font-weight: 300;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid var(--border-color);
}

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

.stat-number {
    font-size: 56px;
    font-weight: 300;
    color: var(--primary-color);
    margin-bottom: 12px;
    letter-spacing: -2px;
}

.stat-label {
    font-size: 12px;
    color: var(--text-lighter);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 400;
}

.about-visual {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
}

.about-features {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 50px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.feature-item:hover {
    padding-left: 20px;
}

.feature-item:hover .feature-number {
    color: var(--primary-color);
}

.feature-number {
    font-size: 64px;
    font-weight: 300;
    color: var(--border-color);
    letter-spacing: -2px;
    line-height: 1;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 120px;
}

.feature-text h4 {
    font-size: 24px;
    font-weight: 400;
    color: var(--primary-color);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.feature-text p {
    font-size: 14px;
    font-weight: 300;
    color: var(--text-lighter);
    letter-spacing: 0.5px;
}

/* 服务 */
.services {
    background: var(--secondary-color);
    padding: 160px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
    margin-top: 80px;
}

.service-card {
    background: var(--secondary-color);
    padding: 60px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--bg-light);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 0;
}

.service-card:hover::before {
    width: 100%;
}

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-card:hover {
    transform: scale(1.02);
}

.service-card.featured {
    background: var(--primary-color);
    color: var(--secondary-color);
}

.service-card.featured::before {
    background: var(--bg-dark);
}

.service-card.featured h3,
.service-card.featured p {
    color: var(--secondary-color);
}

.service-card.featured .service-icon i {
    color: var(--secondary-color);
}

.service-card.featured .service-features li {
    color: rgba(255, 255, 255, 0.6);
}

.service-card.featured .service-features i {
    color: var(--secondary-color);
}

.featured-badge {
    position: absolute;
    top: 30px;
    right: 30px;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 12px;
    font-size: 10px;
    font-weight: 400;
    border: 1px solid rgba(255, 255, 255, 0.2);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
}

.service-card.featured .service-icon {
    border-color: rgba(255, 255, 255, 0.2);
}

.service-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.service-card h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-color);
    font-weight: 400;
    letter-spacing: -0.5px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 32px;
    font-weight: 300;
}

.service-features {
    list-style: none;
    padding: 0;
    margin: 0;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.service-card.featured .service-features {
    border-top-color: rgba(255, 255, 255, 0.1);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    color: var(--text-light);
    font-size: 13px;
    letter-spacing: 0.3px;
}

.service-features i {
    color: var(--primary-color);
    font-size: 14px;
}

/* 联系我们 */
.contact {
    background: var(--bg-dark);
    padding: 160px 0;
}

.contact .section-title {
    color: var(--secondary-color);
}

.contact .section-subtitle {
    color: rgba(255, 255, 255, 0.4);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 80px;
}

.contact-item {
    background: var(--bg-dark);
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.contact-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: rgba(255, 255, 255, 0.03);
    transition: height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.contact-item:hover::before {
    height: 100%;
}

.contact-item:active {
    transform: scale(0.98);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.contact-item i {
    font-size: 40px;
    color: var(--secondary-color);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.contact-label {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.contact-item a,
.contact-item span {
    font-size: 18px;
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 300;
}

.contact-item a:hover {
    color: rgba(255, 255, 255, 0.7);
}

/* 页脚 */
.footer {
    background: var(--primary-color);
    color: var(--secondary-color);
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    font-size: 20px;
    font-weight: 400;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.8;
    font-size: 14px;
    font-weight: 300;
}

.footer-column h4 {
    font-size: 11px;
    margin-bottom: 24px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    margin-bottom: 16px;
    transition: color 0.3s ease;
    font-size: 14px;
    font-weight: 300;
}

.footer-column a:hover {
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.social-links a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--secondary-color);
    transform: scale(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.social-links a:hover::before {
    transform: scale(1);
}

.social-links a:active {
    transform: scale(0.95);
}

.social-links a:hover {
    border-color: var(--secondary-color);
}

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

.social-links i {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s ease;
    position: relative;
    z-index: 1;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    align-items: center;
    gap: 20px;
}

.footer-bottom-left {
    text-align: left;
}

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

.footer-bottom-right {
    text-align: right;
}

.footer-bottom p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
    font-weight: 300;
    letter-spacing: 0.5px;
}

.footer-bottom-center a {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
    font-weight: 300;
    letter-spacing: 0.5px;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom-center a:hover {
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 968px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 80px;
    }
    
    .about-visual {
        height: auto;
    }
    
    .feature-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
        padding: 30px 0;
    }
    
    .feature-item:hover {
        padding-left: 0;
    }
    
    .feature-number {
        font-size: 40px;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        padding: 20px;
    }
    
    .hero-deco-img {
        max-width: 150px;
        width: 50%;
        margin-top: 35px;
    }
    
    .nav-menu {
        gap: 24px;
    }
    
    .hero-title {
        font-size: 56px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 40px;
    }
    
    .stat-number {
        font-size: 40px;
    }
    
    .service-card {
        padding: 40px;
    }
    
    .footer-bottom {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .footer-bottom-left,
    .footer-bottom-center,
    .footer-bottom-right {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .navbar .container {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-deco-img {
        max-width: 100px;
        width: 35%;
    }
    
    .nav-menu {
        gap: 20px;
        font-size: 12px;
    }
    
    .hero-title {
        font-size: 40px;
        letter-spacing: -2px;
    }
    
    .hero-subtitle {
        font-size: 14px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    section {
        padding: 80px 0;
    }
    
    .about {
        padding: 100px 0;
    }
    
    .services {
        padding: 100px 0;
    }
    
    .contact {
        padding: 100px 0;
    }
    
    .about {
        padding: 100px 0 60px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
        margin-top: 40px;
        padding-top: 40px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 10px;
    }
    
    .about-visual {
        margin-top: 40px;
    }
    
    .about-visual {
        height: auto;
        margin-top: 40px;
    }
    
    .feature-item {
        padding: 40px 0;
    }
    
    .feature-number {
        font-size: 48px;
        min-width: 80px;
    }
    
    .feature-text h4 {
        font-size: 20px;
    }
    
    .service-card {
        padding: 40px 30px;
    }
    
    .contact-item {
        padding: 40px 30px;
    }
}


/* 微信二维码弹窗 */
.qrcode-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.qrcode-modal.active {
    opacity: 1;
    visibility: visible;
}

.qrcode-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.qrcode-content {
    position: relative;
    background: var(--secondary-color);
    padding: 50px;
    max-width: 400px;
    width: 90%;
    border: 1px solid var(--border-color);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.qrcode-modal.active .qrcode-content {
    transform: scale(1);
}

.qrcode-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.qrcode-close:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.qrcode-close:hover i {
    color: var(--secondary-color);
}

.qrcode-close i {
    font-size: 20px;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

.qrcode-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.qrcode-header i {
    font-size: 32px;
    color: var(--primary-color);
}

.qrcode-header h3 {
    font-size: 24px;
    font-weight: 400;
    color: var(--primary-color);
    letter-spacing: 0.5px;
}

.qrcode-image {
    width: 100%;
    aspect-ratio: 1;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    overflow: hidden;
}

.qrcode-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 20px;
}

.qrcode-placeholder {
    text-align: center;
    color: var(--text-lighter);
}

.qrcode-placeholder i {
    font-size: 80px;
    margin-bottom: 15px;
    opacity: 0.3;
}

.qrcode-placeholder p {
    font-size: 12px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.qrcode-tip {
    text-align: center;
    font-size: 14px;
    color: var(--text-light);
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* 响应式 */
@media (max-width: 480px) {
    .qrcode-content {
        padding: 40px 30px;
    }
    
    .qrcode-header h3 {
        font-size: 20px;
    }
    
    .qrcode-placeholder i {
        font-size: 60px;
    }
}


/* 滚动动画优化 - 在CSS中设置初始状态 */
.service-card,
.stat-item,
.contact-item,
.feature-item {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), 
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card.animate-in,
.stat-item.animate-in,
.contact-item.animate-in,
.feature-item.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* 为不同元素添加延迟 */
.stat-item:nth-child(1) { transition-delay: 0s; }
.stat-item:nth-child(2) { transition-delay: 0.1s; }
.stat-item:nth-child(3) { transition-delay: 0.2s; }

.feature-item:nth-child(1) { transition-delay: 0s; }
.feature-item:nth-child(2) { transition-delay: 0.15s; }
.feature-item:nth-child(3) { transition-delay: 0.3s; }

.service-card:nth-child(1) { transition-delay: 0s; }
.service-card:nth-child(2) { transition-delay: 0.1s; }
.service-card:nth-child(3) { transition-delay: 0.2s; }
.service-card:nth-child(4) { transition-delay: 0.3s; }

.contact-item:nth-child(1) { transition-delay: 0s; }
.contact-item:nth-child(2) { transition-delay: 0.1s; }
.contact-item:nth-child(3) { transition-delay: 0.2s; }

/* 首屏内容立即显示，不需要动画 */
.hero,
.navbar {
    opacity: 1 !important;
}