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

body {
    font-family: 'Inter', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #000;
    overflow-x: hidden;
    background: linear-gradient(180deg, white 0%, #FFFFF0 33%, #F0F8FF 67%, #FFFFF0 100%);
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #3b82f6;
    --accent-color: #06b6d4;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --border-light: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

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

/* 导航栏 */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.nav-link:hover {
    color: #3498db;
}

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

.bar {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    background: transparent;
    min-height: 90vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    color: black;
    margin-top: 80px;
    padding: 2rem 0;
    max-width: 1440px;
    margin-left: auto;
    margin-right: auto;
}

/* 社会证明 */
.social-proof {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 12px 20px;
    background: rgba(198, 198, 198, 0.1);
    border-radius: 50px;
    border: 1px solid rgba(198, 198, 198, 0.56);
    width: fit-content;
}

.user-avatars {
    display: flex;
    margin-right: 1rem;
}

.avatar-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #E5E7EB;
    border: 2px solid white;
    margin-left: -8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.avatar-icon:first-child {
    margin-left: 0;
}

.rating-text {
    font-size: 13px;
    font-weight: 500;
    color: black;
}

.hero-content {
    max-width: 600px;
    padding: 0 2rem;
}

.hero-title {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
    line-height: 1.3;
    color: black;
}

.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.6;
    color: black;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-button {
    padding: 16px 32px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
}

.cta-button.primary {
    background: #1E1A24;
    color: white;
    box-shadow: var(--shadow-md);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button.secondary {
    background: white;
    color: #1E1A24;
    border: 1px solid #E5E7EB;
}

.cta-button.secondary:hover {
    background: #F9FAFB;
    border-color: #D1D5DB;
}

/* 英雄区域视觉效果 */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 演示屏幕样式 */
.demo-screen {
    width: 100%;
    max-width: 600px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 1px solid #E5E7EB;
}

.screen-header {
    background: #F3F4F6;
    padding: 12px 16px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid #E5E7EB;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #EF4444; }
.dot.yellow { background: #F59E0B; }
.dot.green { background: #10B981; }

.screen-content {
    padding: 40px;
    text-align: center;
}

.screen-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #1F2937;
}

.screen-content p {
    color: #6B7280;
    margin-bottom: 2rem;
}

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

.feature-item {
    padding: 12px 24px;
    background: #F3F4F6;
    border-radius: 8px;
    font-size: 0.95rem;
    color: #4B5563;
}

/* 用户证言区域 */
.testimonials {
    padding: 120px 0;
    background: transparent;
}

.testimonials .section-title {
    font-size: 3rem;
    font-weight: 500;
    margin-bottom: 4rem;
    text-align: center;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

.testimonial-card {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    height: 300px;
    display: flex;
    align-items: flex-end;
    padding: 2rem;
}

.gradient-bg-1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-bg-2 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.gradient-bg-3 {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.testimonial-card:hover {
    transform: translateY(-4px);
}

.testimonial-content {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(6px);
    border-radius: 16px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    width: 100%;
}

.quote-mark {
    font-size: 36px;
    color: #60A5FA;
    font-weight: 500;
    line-height: 1;
    margin-bottom: 8px;
}

.testimonial-name {
    color: white;
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.testimonial-text {
    color: white;
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.9;
}

/* 产品功能区域 */
.features {
    padding: 120px 0;
    background: transparent;
}

.features .section-title {
    font-size: 2.8rem;
    font-weight: 500;
    margin-bottom: 4rem;
    text-align: center;
    color: black;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 1152px;
    margin: 0 auto;
    padding: 0 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid #E5E7EB;
    transition: all 0.3s ease;
}

.feature-card.primary {
    background: #F3F4F6;
    border: 1px solid black;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: black;
    line-height: 1.4;
}

.feature-card p {
    color: black;
    opacity: 0.7;
    line-height: 1.6;
    font-size: 1rem;
}

/* 为什么选择我们 */
.why-choose {
    padding: 120px 0;
    background: transparent;
}

.why-choose .section-title {
    font-size: 2.8rem;
    font-weight: 500;
    margin-bottom: 4rem;
    text-align: center;
    color: black;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1152px;
    margin: 0 auto;
    padding: 0 2rem;
}

.benefit-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid #E5E7EB;
    text-align: center;
    transition: all 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.benefit-card h3 {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: black;
}

.benefit-card p {
    color: black;
    opacity: 0.7;
    line-height: 1.6;
}

/* 通用区域样式 */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: black;
    font-weight: 500;
}

/* 关于我们 */
.about {
    background: #f8f9fa;
}

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

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: #666;
    line-height: 1.8;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 服务 */
.services {
    background: #fff;
}

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

.service-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    margin-bottom: 1.5rem;
}

.service-icon .icon {
    font-size: 3rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.service-card p {
    color: #666;
    line-height: 1.6;
}

/* 联系我们 */
.contact {
    background: #f8f9fa;
}

.contact-content-simple {
    display: flex;
    justify-content: center;
    padding: 2rem 0;
}

.contact-card {
    background: white;
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    text-align: center;
    max-width: 600px;
    width: 100%;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.12);
}

.contact-card.elegant::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.contact-subtitle {
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.email-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.email-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.email-icon {
    font-size: 1.2rem;
}


.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

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

.contact-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

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

.contact-form {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.submit-button {
    background: #3498db;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
    width: 100%;
}

.submit-button:hover {
    background: #2980b9;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 3rem 0 1rem;
}

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

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #fff;
}

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

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

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #3498db;
}

.contact-links p {
    margin-bottom: 0.5rem;
    color: #bdc3c7;
}

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

.social-link {
    background: #34495e;
    padding: 10px 15px;
    border-radius: 5px;
    transition: background 0.3s ease;
}

.social-link:hover {
    background: #3498db;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

.icp-info {
    margin-top: 0.5rem;
}

.icp-info a {
    color: #7f8c8d;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.icp-info a:hover {
    color: #3498db;
    text-decoration: underline;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
    }

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

    .hero {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding: 1rem;
        min-height: 80vh;
    }

    .hero-content {
        padding: 0 1rem;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .cta-button {
        min-width: 120px;
        padding: 14px 24px;
        font-size: 0.9rem;
    }

    .social-proof {
        justify-content: center;
        margin: 0 auto 2rem;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .nav-container {
        padding: 1rem;
    }
}

@media screen and (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .service-card {
        padding: 1.5rem;
    }

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

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

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

.fade-in-up {
    animation: fadeInUp 0.8s ease forwards;
}