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

:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #FFD700;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
}

html {
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    width: 100%;
    max-width: 100vw;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    max-width: 100vw;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-dark);
}

.bee-logo {
    width: 40px;
    height: 40px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

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

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

.btn-login {
    padding: 10px 24px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Hero 区域 */
.hero {
    width: 100%;
    max-width: 100vw;
    margin-top: 70px;
    padding: 100px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease-out;
}

.hero-title .highlight {
    color: var(--accent-color);
    display: block;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn-primary {
    padding: 16px 40px;
    background: var(--accent-color);
    color: var(--text-dark);
    border: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 215, 0, 0.4);
}

.btn-secondary {
    padding: 16px 40px;
    background: transparent;
    color: white;
    border: 2px solid white;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease-out 0.6s both;
}

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

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

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
    animation: float 20s infinite linear;
}

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

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

/* 特性区域 */
.features-section {
    width: 100%;
    max-width: 100vw;
    padding: 100px 20px;
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-dark);
    line-height: 1.3;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.feature-badge {
    padding: 10px 15px;
    background: var(--bg-light);
    border-radius: 8px;
    font-size: 0.9rem;
    margin-top: 20px;
}

.badge-label {
    color: var(--text-light);
}

.badge-link {
    color: var(--primary-color);
    text-decoration: none;
    margin-left: 5px;
    transition: color 0.3s ease;
}

.badge-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* 核心优势 */
.benefits-section {
    width: 100%;
    max-width: 100vw;
    padding: 100px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.benefit-item {
    background: white;
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.benefit-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.benefit-number {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.benefit-unit {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 20px;
}

.benefit-item h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.benefit-item p {
    color: var(--text-light);
    margin-bottom: 25px;
}

.btn-benefit {
    padding: 12px 30px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-benefit:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.metrics-bar {
    display: flex;
    justify-content: center;
    gap: 60px;
    padding: 40px;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.metric {
    text-align: center;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
}

.metric-change {
    font-size: 1.2rem;
    color: #4caf50;
    margin-left: 10px;
}

.metric-label {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: 10px;
}

/* 工作流程 */
.workflow-section {
    width: 100%;
    max-width: 100vw;
    padding: 100px 20px;
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.workflow-steps {
    max-width: 900px;
    margin: 0 auto;
}

.workflow-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    margin-bottom: 80px;
}

.workflow-item.reverse {
    direction: rtl;
}

.workflow-item.reverse > * {
    direction: ltr;
}

.workflow-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.workflow-item h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.workflow-item p {
    color: var(--text-light);
    line-height: 1.8;
}

.workflow-image {
    background: var(--bg-light);
    border-radius: 20px;
    padding: 60px;
    text-align: center;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    font-size: 3rem;
    color: var(--text-light);
}

/* 定价 */
.pricing-section {
    width: 100%;
    max-width: 100vw;
    padding: 100px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.pricing-section .section-title {
    color: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    color: var(--text-dark);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.pricing-card.featured {
    border: 3px solid var(--accent-color);
    transform: scale(1.05);
}

.pricing-featured-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    background: var(--accent-color);
    color: var(--text-dark);
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

.pricing-header h3 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.pricing-header p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.pricing-badge {
    display: inline-block;
    background: #ff4444;
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.pricing-price {
    margin: 30px 0 10px;
}

.price-old {
    text-decoration: line-through;
    color: var(--text-light);
    font-size: 1.5rem;
    margin-right: 10px;
}

.price-new {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.price-period {
    color: var(--text-light);
    font-size: 1.2rem;
}

.pricing-price.custom span {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.pricing-billing {
    color: var(--text-light);
    margin-bottom: 30px;
}

.btn-pricing {
    width: 100%;
    padding: 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 30px;
}

.btn-pricing:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-dark);
    border-bottom: 1px solid var(--border-color);
}

.pricing-limits,
.pricing-unlimited {
    padding-top: 20px;
    border-top: 2px solid var(--border-color);
}

.pricing-limits strong,
.pricing-unlimited strong {
    color: var(--text-dark);
    display: block;
    margin-bottom: 10px;
}

.pricing-limits ul {
    list-style: none;
    color: var(--text-light);
}

.pricing-limits ul li {
    padding: 5px 0;
}

/* 用户评价 */
.testimonials-section {
    width: 100%;
    max-width: 100vw;
    padding: 100px 20px;
    background: var(--bg-white);
    position: relative;
    overflow: hidden;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.testimonial-text {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.8;
}

.testimonial-author {
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.testimonial-role {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* FAQ */
.faq-section {
    width: 100%;
    max-width: 100vw;
    padding: 100px 20px;
    background: var(--bg-light);
    position: relative;
    overflow: hidden;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto 60px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.faq-question {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.faq-answer {
    color: var(--text-light);
    line-height: 1.8;
}

.faq-cta {
    text-align: center;
    color: var(--text-light);
}

.faq-cta p {
    margin: 10px 0;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    width: 100%;
    max-width: 100vw;
    background: var(--text-dark);
    color: white;
    padding: 60px 20px 30px;
    position: relative;
    overflow: hidden;
    margin-top: auto;
}

.footer-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom p {
    margin: 10px 0;
}

.footer-beian {
    margin: 15px 0;
}

.site-name {
    margin-right: 10px;
}

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

.beian-link:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.footer-legal {
    margin-top: 15px;
}

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

.footer-legal a:hover {
    color: var(--accent-color);
}

.footer-legal span {
    margin: 0 10px;
}

/* 防止所有元素溢出 */
section, div, article, aside, header, footer, nav, main {
    max-width: 100vw;
    box-sizing: border-box;
}

img, video, iframe, embed, object {
    max-width: 100%;
    height: auto;
}

table {
    max-width: 100%;
    table-layout: fixed;
}

/* 响应式设计 */
@media (max-width: 768px) {
    html, body {
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
    }
    
    * {
        max-width: 100vw;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-links {
        gap: 15px;
        font-size: 0.9rem;
    }
    
    .nav-links a {
        display: none;
    }
    
    .features-grid,
    .benefits-grid,
    .testimonials-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
        width: 100%;
    }
    
    .workflow-item {
        grid-template-columns: 1fr;
        text-align: center;
        width: 100%;
    }
    
    .workflow-item.reverse {
        direction: ltr;
    }
    
    .metrics-bar {
        flex-direction: column;
        gap: 30px;
        width: 100%;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .container,
    .hero-container,
    .nav-container,
    .footer-container {
        width: 100%;
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero {
        padding: 60px 20px;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .logo-text {
        font-size: 20px;
    }
}