/* 企业服务行业UI配色策略 - 全局变量 */
:root {
    /* 主色调系统（蓝色系 - 专业、信赖） */
    --primary-color: #1e40af;
    --primary-light: #3b82f6;
    --primary-gradient: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    
    /* 辅助色调系统 */
    --success-color: #059669;
    --warning-color: #f59e0b;
    --accent-color: #7c3aed;
    
    /* 中性色调系统 */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    /* 语义配色 */
    --hero-bg: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 100%);
    --hero-text: linear-gradient(135deg, #ffffff 0%, #e2e8f0 100%);
    --card-bg: linear-gradient(145deg, #ffffff, #f8f9fa);
    --card-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    --hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
}

/* 右侧固定悬浮按钮 */
.floating-cta {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    padding: 1rem 1.5rem;
    text-decoration: none;
    border-radius: 8px 0 0 8px;
    box-shadow: -4px 4px 20px rgba(0, 0, 0, 0.15);
    transition: all 0.3s ease;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    cursor: pointer;
}

.floating-btn:hover {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    box-shadow: -6px 6px 30px rgba(0, 0, 0, 0.2);
    transform: translateX(-5px);
}

.floating-btn i {
    font-size: 1.2rem;
}

.floating-btn span {
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 2px;
}

@media (max-width: 768px) {
    .floating-cta {
        right: 10px;
        bottom: 80px;
        top: auto;
        transform: none;
    }
    
    .floating-btn {
        writing-mode: horizontal-tb;
        border-radius: 50px;
        padding: 0.8rem 1.5rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    }
    
    .floating-btn:hover {
        transform: translateY(-3px);
    }
}

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

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    margin-right: 10px;
    color: var(--primary-light);
}

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

.nav-menu > li {
    position: relative;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    display: block;
}

.nav-menu > li > a {
    padding: 0.5rem 0;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

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

/* 下拉菜单样式 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    padding: 0.5rem 0;
    list-style: none;
    margin-top: 0.5rem;
}

.dropdown:hover > .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.2rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.dropdown-menu a::after {
    display: none;
}

.dropdown-menu a:hover,
.dropdown-menu a.active {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding-left: 1.5rem;
}

.nav-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* Hero 区样式 */
.hero {
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.3) 0%, transparent 50%),
        linear-gradient(to bottom, rgba(15, 23, 42, 0.7) 0%, rgba(30, 58, 138, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 1000px;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    white-space: nowrap;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    color: white;
    letter-spacing: -0.5px;
}

@media (min-width: 1200px) {
    .hero-title {
        font-size: 3.5rem;
        white-space: nowrap;
    }
}

@media (min-width: 1400px) {
    .hero-title {
        font-size: 4rem;
        white-space: nowrap;
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 3rem;
    color: #e2e8f0;
    line-height: 1.6;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 1.2rem 2.8rem;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
    font-family: 'Noto Sans SC', sans-serif;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    color: white;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    box-shadow: 0 12px 35px rgba(59, 130, 246, 0.6);
    transform: translateY(-6px) scale(1.03);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(15px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    color: white;
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.35);
    border-color: rgba(255, 255, 255, 0.4);
}

/* 波浪动画 */
.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
}

.hero-wave svg {
    position: relative;
    display: block;
    width: 100%;
    height: 100px;
}

/* 通用Section样式 */
section {
    padding: 5rem 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 1.5rem;
}

/* 通用卡片样式 */
.card {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: var(--hover-shadow);
}

/* 核心价值亮点卡片 - 蓝色系 */
.feature-card {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.feature-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.25);
    background: linear-gradient(145deg, #ffffff, #eff6ff);
}

/* 企业痛点卡片 - 橙黄色系 */
.pain-point {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.pain-point::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.pain-point:hover::before {
    transform: scaleX(1);
}

.pain-point:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(245, 158, 11, 0.25);
    background: linear-gradient(145deg, #ffffff, #fffbeb);
}

/* 核心服务卡片 - 蓝色系 */
.service-card {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 420px;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.25);
    background: linear-gradient(145deg, #ffffff, #eff6ff);
}

/* 行业解决方案卡片 - 紫色系 */
.solution-card {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.solution-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(124, 58, 237, 0.25);
    background: linear-gradient(145deg, #ffffff, #faf5ff);
}

/* 成功案例卡片 - 绿色系 */
.case-card {
    background: var(--card-bg);
    padding: 2.2rem;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

.case-card:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 40px rgba(5, 150, 105, 0.25);
    background: linear-gradient(145deg, #ffffff, #f0fdf4);
}

/* 图标样式 */
.feature-icon,
.pain-point i,
.service-icon,
.solution-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    transition: all 0.4s ease;
}

.feature-card .feature-icon {
    background: var(--primary-gradient);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.pain-point i {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.service-card .service-icon {
    background: var(--primary-gradient);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.solution-card .solution-icon {
    background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.case-card .case-icon {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    box-shadow: 0 4px 15px rgba(5, 150, 105, 0.3);
}

.feature-card:hover .feature-icon,
.pain-point:hover i,
.service-card:hover .service-icon,
.solution-card:hover .solution-icon,
.case-card:hover .case-icon {
    transform: translateY(-10px) scale(1.1);
}

/* 卡片内容样式 */
.card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.card:hover h3 {
    color: var(--primary-color);
    transform: translateY(-3px);
}

.card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
    transition: all 0.3s ease;
}

.card:hover p {
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
    transition: all 0.3s ease;
    flex-grow: 1;
}

.service-card:hover p {
    color: var(--text-primary);
}

/* 服务链接 */
.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}
.case-card {
    text-align: left;
}

.case-card .case-image {
    width: 100%;
    height: 200px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    border-radius: 8px;
}

.case-card .case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.case-card:hover .case-image img {
    transform: scale(1.05);
}

.case-card .case-content h3 {
    margin-bottom: 1rem;
}

.case-card .case-content p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.case-card .case-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* 服务链接 */
.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.service-link:hover {
    gap: 0.8rem;
    color: var(--primary-light);
}

/* 网格布局 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pain-points-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

/* 五步法时间线布局 */
.services-process {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 0;
}

.services-process::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, #3b82f6 0%, #60a5fa 50%, #93c5fd 100%);
    border-radius: 2px;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.process-step:nth-child(odd) {
    flex-direction: column;
}

.step-number {
    width: 45px;
    height: 45px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 800;
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    z-index: 10;
    position: relative;
    flex-shrink: 0;
    margin-top: 1.5rem;
}

.step-number::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.process-step .service-card {
    width: 100%;
    max-width: 700px;
    margin: 0;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.process-step:nth-child(odd) .service-card {
    margin-right: 0;
}

.process-step:nth-child(even) .service-card {
    margin-left: 0;
}

.process-step:first-child {
    margin-top: 1rem;
}

.process-step:last-child {
    margin-bottom: 0;
}

.step-arrow {
    display: none;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

/* 关于我们 */
.about {
    background: var(--bg-primary);
}

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

.about-text p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-features {
    margin-top: 2rem;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-feature i {
    color: var(--success-color);
    font-size: 1.2rem;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

/* 联系我们 */
.contact {
    background: var(--bg-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.contact-item p {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.4;
}

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

.social-links a {
    width: 45px;
    height: 45px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.social-links a:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

/* 联系表单 */
.contact-form h3 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.contact-form form {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: #f9fafb;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background: var(--hero-bg);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-section p {
    color: #cbd5e1;
    line-height: 1.7;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: white;
    padding-left: 5px;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #94a3b8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 90%;
        max-width: 350px;
        margin: 10px auto;
        background: white;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
        border-radius: 12px;
        border: 1px solid rgba(0, 0, 0, 0.08);
    }
    
    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease-out;
    }
    
    .nav-menu > li {
        width: 100%;
    }
    
    .nav-menu a {
        padding: 0.8rem 0;
    }
    
    /* 移动端下拉菜单 */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 1rem;
        margin-top: 0.5rem;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .dropdown.active > .dropdown-menu,
    .dropdown-menu.active {
        max-height: 500px;
    }
    
    .dropdown > a {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .dropdown > a::after {
        content: '\f078';
        font-family: 'Font Awesome 6 Free';
        font-weight: 900;
        font-size: 0.8rem;
        margin-left: 0.5rem;
        background: none;
        position: static;
        width: auto;
        height: auto;
    }
    
    .dropdown.active > a::after {
        transform: rotate(180deg);
    }
    
    .dropdown-menu a {
        padding: 0.6rem 0;
        font-size: 0.9rem;
    }
    
    .dropdown-menu a:hover,
    .dropdown-menu a.active {
        padding-left: 0;
        background: transparent;
    }
    
    .nav-toggle {
        display: block;
        position: relative;
        z-index: 1001;
    }
    
    /* 五步法移动端适配 */
    .services-process::before {
        display: none;
    }
    
    .process-step {
        flex-direction: column !important;
        align-items: center;
    }
    
    .process-step:nth-child(odd) {
        flex-direction: column !important;
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
        margin-top: 1rem;
        margin-left: 0;
    }
    
    .step-number::before {
        width: 54px;
        height: 54px;
    }
    
    .process-step .service-card {
        width: 100%;
        margin: 0 !important;
    }

    .hero-title {
        font-size: 2rem;
        white-space: normal;
        line-height: 1.4;
        padding: 0 1rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
        padding: 0 1rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .features-grid,
    .pain-points-grid,
    .services-grid,
    .solutions-grid,
    .cases-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-card,
    .pain-point,
    .service-card,
    .solution-card,
    .case-card {
        padding: 1.5rem;
        text-align: center;
        display: block;
        writing-mode: horizontal-tb;
        text-orientation: mixed;
    }
    
    .feature-card h3,
    .pain-point h4,
    .service-card h3,
    .solution-card h3 {
        white-space: normal;
        word-break: normal;
        overflow-wrap: normal;
    }
    
    .feature-card p,
    .pain-point p,
    .service-card p,
    .solution-card p {
        white-space: normal;
        word-break: normal;
        overflow-wrap: normal;
        line-height: 1.6;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .case-card .case-image {
        height: 180px;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .feature-icon,
    .pain-point i,
    .service-icon,
    .solution-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        margin: 0 auto 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
        white-space: normal;
        line-height: 1.4;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        padding: 0 0.5rem;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
    }
    
    .section-header p {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.9rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .feature-icon,
    .pain-point i,
    .service-icon,
    .solution-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    section {
        padding: 2.5rem 0;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .nav-brand {
        font-size: 1.2rem;
    }
    
    .nav-brand i {
        font-size: 1.2rem;
        margin-right: 8px;
    }
    
    .contact-item {
        padding: 1.2rem;
        flex-direction: row;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .contact-item i {
        font-size: 1.4rem;
        margin-top: 0;
    }
    
    .contact-item h4 {
        font-size: 0.85rem;
    }
    
    .contact-item p {
        font-size: 0.95rem;
    }
    
    .contact-form form {
        padding: 1.5rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.7rem 0.9rem;
        font-size: 0.95rem;
    }
}

/* 交替背景色 */
.features {
    background: var(--bg-secondary);
}

.pain-points {
    background: var(--bg-primary);
}

.services {
    background: var(--bg-secondary);
}

.solutions {
    background: var(--bg-primary);
}

.cases {
    background: var(--bg-secondary);
}