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

:root {
    --primary-color: #1e3a8a;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #059669;
    --accent-color: #f59e0b;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px -5px rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-warning: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 
                 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
    max-width: 100vw;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
}

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

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo i {
    font-size: 2rem;
}

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

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

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

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-call {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-call:hover {
    color: var(--primary-color);
}

.btn-consult {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* 导航下拉菜单 */
.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 150px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 100;
}

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

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s;
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

/* ===== 大屏轮播图 ===== */
.hero-slider {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    margin-top: 70px; /* 导航栏高度 */
    overflow: hidden;
}

.hero-swiper {
    width: 100%;
    height: 100%;
}

.hero-slide {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-size: cover;
    background-position: center;
}

/* 移除遮罩层，保持图片清晰 */
.hero-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.2); /* 只保留很轻的暗化，不影响清晰度 */
    z-index: 1;
}

.hero-slide .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.8rem;
    margin-bottom: 3rem;
    opacity: 0.95;
    font-weight: 300;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn-primary {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    font-weight: 600;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    padding: 1.2rem 3rem;
    font-size: 1.2rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 2px solid white;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-5px);
}

/* Swiper导航按钮 */
.swiper-button-prev,
.swiper-button-next {
    color: white !important;
    background: rgba(255, 255, 255, 0.2);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    backdrop-filter: blur(10px);
}

.swiper-button-prev:hover,
.swiper-button-next:hover {
    background: rgba(255, 255, 255, 0.3);
}

.swiper-button-prev::after,
.swiper-button-next::after {
    font-size: 24px !important;
}

.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: white;
    opacity: 0.5;
}

.swiper-pagination-bullet-active {
    opacity: 1;
    background: white;
}

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

/* 服务快速入口 */
.quick-services {
    padding: 3rem 0;
    background: white;
}

.quick-services-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.quick-service-item {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-light);
    border-radius: 15px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.quick-service-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    background: white;
}

.service-icon-bg {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
    font-size: 2rem;
}

.quick-service-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.quick-service-item p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.articles-preview {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.article-link {
    display: block;
    padding: 0.5rem 0;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s;
}

.article-link:hover {
    color: var(--primary-color);
}

/* 区域注册 */
.region-register {
    padding: 5rem 0;
    background: var(--bg-light);
}

.region-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.region-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.region-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.region-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.region-card .btn-region {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.region-card .btn-region:hover {
    transform: scale(1.05);
}

/* 客户心声 */
.testimonials {
    padding: 5rem 0;
    background: white;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.testimonial-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    position: relative;
}

.testimonial-card::before {
    content: '\201C';
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.2;
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.testimonial-info h4 {
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.testimonial-info p {
    color: var(--text-light);
    font-size: 0.875rem;
}

.testimonial-rating {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.testimonial-content {
    color: var(--text-dark);
    line-height: 1.6;
}

.testimonial-form {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    max-width: 600px;
    margin: 0 auto;
}

.testimonial-form h3 {
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.testimonial-form input,
.testimonial-form select,
.testimonial-form textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
}

.rating-input {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.stars {
    display: flex;
    gap: 0.25rem;
}

.stars i {
    font-size: 1.5rem;
    color: var(--border-color);
    cursor: pointer;
    transition: color 0.3s;
}

.stars i:hover,
.stars i.active {
    color: var(--accent-color);
}

/* 知识中心 */
.knowledge-center,
.business-knowledge,
.knowledge-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
}

.knowledge-categories {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    justify-content: center;
}

.category-tab {
    padding: 1rem 2.5rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s;
    color: var(--text-dark);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.category-tab:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
}

.category-tab.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-color: transparent;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.knowledge-content,
.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.knowledge-article {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    transition: all 0.4s ease;
    border-left: 4px solid transparent;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    cursor: pointer;
}

.knowledge-article:hover {
    border-left-color: #667eea;
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.25);
    transform: translateY(-10px);
}

.article-category {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    color: #667eea;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
}

.knowledge-article h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.knowledge-article p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.9rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.btn-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-more:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.5);
}

.article-title {
    font-size: 1.125rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.article-excerpt {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

.ai-generate-panel {
    text-align: center;
    margin-top: 3rem;
}

.btn-ai-generate {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.btn-ai-generate:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(139, 92, 246, 0.3);
}

/* 热门标签 */
.hot-tags {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    padding: 1rem;
}

.tag {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* 不同颜色的标签 */
.tag:nth-child(6n+1) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.tag:nth-child(6n+2) {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
}

.tag:nth-child(6n+3) {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.tag:nth-child(6n+4) {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    color: white;
}

.tag:nth-child(6n+5) {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: white;
}

.tag:nth-child(6n) {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    color: white;
}

.tag::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    transition: left 0.5s;
}

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

.tag:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 标签动画 */
@keyframes tagFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-5px);
    }
}

.tag:nth-child(odd) {
    animation: tagFloat 3s ease-in-out infinite;
}

.tag:nth-child(even) {
    animation: tagFloat 3s ease-in-out infinite;
    animation-delay: 1.5s;
}

/* 在线客服浮窗 */
.customer-service {
    position: fixed;
    right: 2rem;
    bottom: 2rem;
    z-index: 999;
}

.service-toggle {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
    transition: all 0.3s;
}

.service-toggle:hover {
    transform: scale(1.1);
}

.service-panel {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 300px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s;
}

.service-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.service-panel h3 {
    padding: 1.5rem;
    background: var(--primary-color);
    color: white;
    border-radius: 15px 15px 0 0;
}

.service-options {
    padding: 1rem;
}

.service-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.service-option:hover {
    background: var(--bg-light);
}

.service-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* 英雄区域 */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #8b5cf6 100%);
    z-index: -1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.95) 0%, rgba(59, 130, 246, 0.85) 100%);
    backdrop-filter: blur(10px);
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 1;
    animation: fadeInUp 1s ease;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.hero-features {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 2.5rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
}

.hero-feature i {
    font-size: 1.5rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 统计数据 */
.stats {
    padding: 4rem 0;
    background: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 15px;
    transition: all 0.3s ease;
}

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

.stat-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-light);
    font-size: 1rem;
}

/* 服务项目 */
.services {
    padding: 5rem 0;
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.1), rgba(59, 130, 246, 0.1));
    color: var(--primary-color);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    border: 2px solid rgba(30, 58, 138, 0.2);
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    position: relative;
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.service-card.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05), rgba(59, 130, 246, 0.05));
}

.service-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.service-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.service-desc {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-list {
    list-style: none;
    margin-bottom: 2rem;
}

.service-list li {
    padding: 0.5rem 0;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-list i {
    color: var(--secondary-color);
}

.service-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.price-tag {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.btn-service {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-service:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* 核心优势 */
.advantages {
    padding: 5rem 0;
    background: white;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.advantage-card {
    padding: 2.5rem;
    background: var(--bg-light);
    border-radius: 20px;
    position: relative;
    transition: all 0.3s ease;
}

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

.advantage-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 3rem;
    font-weight: bold;
    color: rgba(37, 99, 235, 0.1);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.advantage-title {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.advantage-desc {
    color: var(--text-light);
    line-height: 1.6;
}

/* 办理流程 */
.process {
    padding: 5rem 0;
    background: var(--bg-light);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
}

.process-step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    position: relative;
    transition: all 0.3s ease;
}

.process-step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.step-number {
    position: absolute;
    top: -15px;
    right: -15px;
    width: 40px;
    height: 40px;
    background: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

.step-title {
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.step-desc {
    color: var(--text-light);
    line-height: 1.6;
}

/* 联系我们 */
.contact {
    padding: 5rem 0;
    background: white;
}

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

.contact-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 15px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* 联系我们 */
.contact-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.contact-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,%3Csvg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="none" fill-rule="evenodd"%3E%3Cg fill="%23ffffff" fill-opacity="0.05"%3E%3Cpath d="M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z"/%3E%3C/g%3E%3C/g%3E%3C/svg%3E');
    opacity: 0.5;
}

.contact-section .section-header {
    position: relative;
    z-index: 1;
}

.contact-section .section-title {
    color: white;
    font-size: 3rem;
    font-weight: 800;
}

.contact-section .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.3rem;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    margin-top: 4rem;
    position: relative;
    z-index: 1;
}

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

.info-item {
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    transition: all 0.3s;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.info-item:hover {
    transform: translateX(10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
}

.info-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    flex-shrink: 0;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.info-details h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.info-details p,
.info-details a {
    font-size: 1.1rem;
    color: var(--text-light);
    text-decoration: none;
}

.info-details a:hover {
    color: #667eea;
}

.contact-form {
    background: rgba(255, 255, 255, 0.98);
    padding: 3rem;
    border-radius: 25px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.contact-form h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
    background: white;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    padding: 1.3rem;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.6);
}

.form-title {
    font-size: 1.75rem;
    font-weight: bold;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

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

.form-control {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.btn-submit {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1rem;
}

.footer-heading {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

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

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .services-grid, .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid, .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    /* 轮播图移动端优化 */
    .hero-slider {
        height: 70vh;
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-primary,
    .btn-secondary {
        padding: 1rem 2rem;
        font-size: 1rem;
        width: 100%;
    }
    
    /* 财税知识移动端 */
    .knowledge-categories {
        gap: 0.8rem;
    }
    
    .category-tab {
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .knowledge-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .knowledge-article {
        padding: 1.5rem;
    }
    
    .knowledge-article h3 {
        font-size: 1.2rem;
    }
    
    /* 联系我们移动端 */
    .contact-section {
        padding: 4rem 0;
    }
    
    .contact-section .section-title {
        font-size: 2rem;
    }
    
    .contact-section .section-subtitle {
        font-size: 1.1rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .info-item {
        padding: 1.5rem;
    }
    
    .info-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .info-details h4 {
        font-size: 1.1rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .services-grid, .advantages-grid, .stats-grid, .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .quick-services-grid,
    .region-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-slider,
    .knowledge-content {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper, .footer-content {
        grid-template-columns: 1fr;
    }
    
    .customer-service {
        right: 1rem;
        bottom: 1rem;
    }
}

/* ==================== 深度优化样式 ====================  */

/* 页面加载优化 */
.page-hidden {
    animation-play-state: paused !important;
}

.page-loaded {
    opacity: 1 !important;
}

/* 回到顶部按钮动画 */
.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6) !important;
}

.back-to-top:active {
    transform: translateY(-2px);
}

/* 移动端体验优化 */
@media (max-width: 768px) {
    .is-mobile .back-to-top {
        bottom: 70px;
        right: 15px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

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

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

/* 性能优化：GPU加速 */
.service-card,
.advantage-card,
.region-card,
.category-card,
.knowledge-article,
.back-to-top {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* 用户体验优化：点击反馈 */
.btn-primary:active,
.btn-secondary:active,
.btn-service:active,
.btn-consult:active,
.btn-tax-risk:active {
    transform: scale(0.95);
}

/* 可访问性优化 */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 9999;
}

.skip-to-content:focus {
    top: 0;
}

/* 打印样式优化 */
@media print {
    .navbar,
    .mobile-bottom-nav,
    .back-to-top,
    .btn-consult,
    .customer-service {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero {
        page-break-after: avoid;
    }
}

/* 动画性能优化 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 高对比度模式优化 */
@media (prefers-contrast: high) {
    .service-card,
    .advantage-card,
    .region-card {
        border: 2px solid currentColor;
    }
}

/* 暗黑模式支持（未来扩展） */
@media (prefers-color-scheme: dark) {
    /* 暂时保留，未来可添加暗黑模式 */
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .service-card:hover,
    .advantage-card:hover,
    .region-card:hover {
        transform: none;
    }
    
    .service-card:active,
    .advantage-card:active,
    .region-card:active {
        transform: scale(0.98);
    }
}

/* 加载状态优化 */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

img:not([src]) {
    visibility: hidden;
}

/* 文本选中优化 */
::selection {
    background-color: rgba(102, 126, 234, 0.3);
    color: var(--text-dark);
}

::-moz-selection {
    background-color: rgba(102, 126, 234, 0.3);
    color: var(--text-dark);
}

/* 滚动条优化 */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5568d3, #6a4091);
}

/* 焦点可见性优化 */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 移动端横幅优化 */
@media (max-width: 768px) {
    .region-banner {
        display: block !important;
    }
    
    .tax-risk-banner {
        padding: 2rem 0;
    }
}