/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
    --primary-color: #1E6BD0;
    --secondary-color: #4CAF50;
    --accent-color: #FF9800;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --bg-light: #f8f9fa;
    --bg-lighter: #f1f3f5;
    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* 全局过渡效果 */
* {
    transition: color var(--transition), background-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
}

/* 选择文本样式 */
::selection {
    background-color: rgba(30, 107, 208, 0.2);
    color: var(--text-dark);
}

::-moz-selection {
    background-color: rgba(30, 107, 208, 0.2);
    color: var(--text-dark);
}



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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 16px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(-100%);
    transition: transform 0.5s;
    z-index: -1;
}

.btn:hover::before {
    transform: translateX(0);
}

.btn-primary {
    background: linear-gradient(45deg, #1E6BD0, #2196F3);
    color: white;
    box-shadow: 0 4px 15px rgba(30, 107, 208, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(45deg, #1652a0, #1976D2);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(30, 107, 208, 0.4);
}

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

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(30, 107, 208, 0.4);
}

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

/* 章节标题 */
.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

.section-subtitle {
    text-align: center;
    max-width: 800px;
    margin: 20px auto 50px;
    font-size: 18px;
    color: var(--text-light);
    line-height: 1.7;
}

/* 顶部导航栏 */
.header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo img {
    height: 40px;
    transition: transform var(--transition);
}

.logo:hover img {
    transform: scale(1.05);
}

.nav ul {
    display: flex;
    list-style: none;
}

.nav ul li {
    margin-left: 30px;
    position: relative;
}

.nav ul li::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: width var(--transition);
}

.nav ul li:hover::after {
    width: 100%;
}

.nav ul li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

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

/* 主横幅区 */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect x="0" y="0" width="100" height="100" fill="none" stroke="%23e9ecef" stroke-width="1"/><circle cx="50" cy="50" r="40" fill="none" stroke="%23e9ecef" stroke-width="1"/><path d="M30 50L50 30L70 50L50 70Z" fill="none" stroke="%23e9ecef" stroke-width="1"/></svg>');
    background-size: 100px 100px;
    opacity: 0.05;
    z-index: 0;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    padding-right: 40px;
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-dark);
    line-height: 1.2;
    position: relative;
    display: inline-block;
}

.hero h1::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 80px;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.price-info {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 18px;
    font-weight: 500;
}

.price-divider {
    color: #adb5bd;
}

.price-tag {
    color: var(--primary-color);
    font-weight: 600;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    animation: float 5s ease-in-out infinite;
}

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

.dashboard-preview {
    width: 100%;
    max-width: 500px;
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform 0.3s ease;
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.dashboard-header {
    background: linear-gradient(45deg, var(--primary-color), #2196F3);
    color: white;
    padding: 15px 20px;
}

.dashboard-title {
    font-size: 18px;
    font-weight: 600;
}

.dashboard-content {
    padding: 20px;
}

.chart-container {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.chart-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
    text-align: center;
}

.chart-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 160px;
    padding: 0 10px;
    border-bottom: 2px solid var(--bg-light);
    position: relative;
}

.bar-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.bar-label {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 8px;
    text-align: center;
}

.bar {
    width: 24px;
    border-radius: 4px 4px 0 0;
    margin-bottom: 2px;
    position: relative;
    transition: transform 0.3s ease;
}

.bar:hover {
    transform: scaleY(1.05);
}

.bar.income {
    background: linear-gradient(to top, var(--secondary-color), #66BB6A);
}

.bar.expense {
    background: linear-gradient(to top, #FF5722, #FF7043);
}

.chart-legend {
    display: flex;
    justify-content: center;
    margin-top: 15px;
}

.legend-item {
    display: flex;
    align-items: center;
    margin: 0 15px;
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    margin-right: 8px;
}

.income-color {
    background: var(--secondary-color);
}

.expense-color {
    background: #FF5722;
}

.legend-text {
    font-size: 14px;
    color: var(--text-light);
}

.data-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.data-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.data-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(30, 107, 208, 0.1);
}

.data-label {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 5px;
    font-weight: 500;
}

.data-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    position: relative;
}

.data-value::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 25%;
    width: 50%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.data-card:hover .data-value::before {
    transform: scaleX(1);
}

/* 核心卖点 */
.features {
    padding: 80px 0;
    background-color: white;
    background-image: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(30, 107, 208, 0.05) 0%, rgba(30, 107, 208, 0) 70%);
    border-radius: 50%;
}

.features::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: -50px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(76, 175, 80, 0.05) 0%, rgba(76, 175, 80, 0) 70%);
    border-radius: 50%;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.feature-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

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

.feature-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, rgba(30, 107, 208, 0.1) 0%, rgba(33, 150, 243, 0.1) 100%);
    border-radius: 50%;
    margin: 0 auto 25px;
    color: var(--primary-color);
    transition: all 0.3s ease;
    position: relative;
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2196F3 100%);
    color: white;
    transform: scale(1.1);
}

.feature-icon svg {
    width: 45px;
    height: 45px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.feature-card p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* 功能介绍 */
.functionalities {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.functionalities::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(33, 150, 243, 0.1) 0%, rgba(33, 150, 243, 0) 70%);
    border-radius: 50%;
}

.functionalities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.functionality-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.functionality-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: linear-gradient(135deg, rgba(30, 107, 208, 0.05) 0%, rgba(33, 150, 243, 0.05) 100%);
    transition: height 0.3s ease;
}

.functionality-card:hover::after {
    height: 100%;
}

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

.functionality-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1) 0%, rgba(255, 193, 7, 0.1) 100%);
    border-radius: 50%;
    margin: 0 auto 25px;
    color: var(--accent-color);
    transition: all 0.3s ease;
    position: relative;
}

.functionality-card:hover .functionality-icon {
    background: linear-gradient(135deg, var(--accent-color) 0%, #FFC107 100%);
    color: white;
    transform: scale(1.1);
}

.functionality-icon svg {
    width: 45px;
    height: 45px;
}

.functionality-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.functionality-card p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* 价格方案 */
.pricing {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    position: relative;
}

.pricing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="%23e9ecef" stroke-width="1"/><path d="M30 50L50 30L70 50L50 70Z" fill="none" stroke="%23e9ecef" stroke-width="1"/></svg>');
    background-size: 100px 100px;
    opacity: 0.05;
    z-index: 0;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.pricing-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 20px;
    padding: 50px 40px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    height: 100%;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 107, 208, 0.02) 0%, rgba(33, 150, 243, 0.02) 100%);
    z-index: -1;
}

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

.pricing-card.professional {
    border: 2px solid transparent;
    background-image: linear-gradient(#ffffff, #ffffff), linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.pricing-card.professional::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.pricing-card.professional:hover::after {
    opacity: 0.1;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(45deg, #ff6b6b, #FF8A80);
    color: white;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
    animation: pulse 2s infinite;
}

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

.pricing-header h3 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.price {
    margin-bottom: 40px;
}

.currency {
    font-size: 26px;
    vertical-align: super;
    color: var(--primary-color);
}

.amount {
    font-size: 70px;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.period {
    font-size: 18px;
    color: var(--text-light);
    margin-left: 5px;
}

.pricing-features ul {
    list-style: none;
    margin-bottom: 40px;
    text-align: left;
}

.pricing-features ul li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    padding-left: 35px;
    transition: transform 0.2s ease;
}

.pricing-features ul li:hover {
    transform: translateX(5px);
}

.pricing-features ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 18px;
}

.pricing-features ul li:last-child {
    border-bottom: none;
}

/* 行业适用性 */
.industries {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.industries::before {
    content: '';
    position: absolute;
    top: 50px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 152, 0, 0.05) 0%, rgba(255, 152, 0, 0) 70%);
    border-radius: 50%;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.industry-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 15px;
    padding: 35px 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.industry-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--accent-color), #FFC107);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.industry-card:hover::before {
    transform: scaleX(1);
}

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

.industry-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(255, 152, 0, 0.1) 0%, rgba(255, 193, 7, 0.1) 100%);
    border-radius: 50%;
    margin: 0 auto 25px;
    color: var(--accent-color);
    transition: all 0.3s ease;
    position: relative;
}

.industry-card:hover .industry-icon {
    background: linear-gradient(135deg, var(--accent-color) 0%, #FFC107 100%);
    color: white;
    transform: scale(1.1);
}

.industry-icon svg {
    width: 40px;
    height: 40px;
}

.industry-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.industry-card p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* 服务承诺 */
.commitment {
    padding: 80px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    position: relative;
}

.commitment::before {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(76, 175, 80, 0.05) 0%, rgba(76, 175, 80, 0) 70%);
    border-radius: 50%;
}

.commitment-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.commitment-item {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.commitment-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--secondary-color), #4CAF50);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.commitment-item:hover::before {
    transform: scaleX(1);
}

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

.commitment-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(76, 175, 80, 0.2) 100%);
    border-radius: 50%;
    margin: 0 auto 25px;
    color: var(--secondary-color);
    transition: all 0.3s ease;
    position: relative;
}

.commitment-item:hover .commitment-icon {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #4CAF50 100%);
    color: white;
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(76, 175, 80, 0.3);
}

.commitment-icon svg {
    width: 45px;
    height: 45px;
}

.commitment-item h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
    position: relative;
    display: inline-block;
}

.commitment-item p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 0;
}

/* 联系我们 */
.contact {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.contact-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.contact-info p {
    font-size: 18px;
    color: #6c757d;
    margin-bottom: 30px;
}

.contact-methods {
    margin-bottom: 40px;
}

.contact-method {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background-color: #e3f2fd;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #1E6BD0;
    margin-right: 20px;
}

.contact-text h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
    color: #2c3e50;
}

.contact-text p {
    margin: 0;
    color: #6c757d;
}

.contact-image {
    flex: 1;
}

.customer-support-image {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.support-avatar {
    width: 120px;
    height: 120px;
    background-color: #e9ecef;
    border-radius: 50%;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.avatar-placeholder {
    width: 60px;
    height: 60px;
    background-color: #adb5bd;
    border-radius: 50%;
}

.support-bubble {
    background-color: white;
    border-radius: 18px;
    padding: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    max-width: 300px;
}

.support-bubble:before {
    content: "";
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-width: 0 10px 10px 10px;
    border-style: solid;
    border-color: white transparent;
}

.support-bubble p {
    margin: 0;
    color: #6c757d;
}

.cta-button {
    text-align: center;
}

/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h4:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: #1E6BD0;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 15px;
}

.footer-section p {
    color: #adb5bd;
    margin-bottom: 20px;
}

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

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

.footer-section ul li a {
    color: #adb5bd;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    color: #adb5bd;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    .hero h1::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .features-grid, .functionalities-grid, .commitment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .section-subtitle {
        font-size: 16px;
    }
    
    .features-grid, .functionalities-grid, .commitment-grid {
        grid-template-columns: 1fr;
    }
    
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    .data-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-section h4:after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .pricing-card {
        padding: 40px 30px;
    }
    
    .amount {
        font-size: 60px;
    }
}

@media (max-width: 576px) {
    .header .container {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav ul li {
        margin: 0 10px 10px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero h1::after {
        width: 60px;
    }
    
    .price-info {
        flex-direction: column;
        gap: 10px;
    }
    
    .feature-card, .functionality-card, .commitment-item, .industry-card {
        padding: 30px 20px;
    }
    
    .pricing-card {
        padding: 30px 20px;
    }
    
    .amount {
        font-size: 50px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 16px;
    }
    
    .btn-large {
        padding: 15px 30px;
        font-size: 17px;
    }
}

/* 懒加载图片样式 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

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

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

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

/* 高对比度和可访问性增强 */
a:focus, button:focus {
    outline: 2px solid #1E6BD0;
    outline-offset: 2px;
}

/* 加载动画 */
.loader {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #1E6BD0;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}