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

:root {
    --primary-color: #0056b3;
    --primary-light: #007bff;
    --primary-dark: #004494;
    --secondary-color: #00a8cc;
    --accent-color: #f39c12;
    --accent-hover: #e67e22;
    --text-dark: #2c3e50;
    --text-medium: #5a6c7d;
    --text-light: #8898aa;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e1e5eb;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ===================================
   通用组件
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header.text-left {
    text-align: left;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    position: relative;
    display: inline-block;
}

.section-header.text-left .section-title::after {
    left: 0;
    transform: none;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 15px;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

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

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* ===================================
   头部导航
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.8rem;
}

.nav {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.95rem;
    color: var(--text-medium);
    border-radius: 6px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background: rgba(0, 86, 179, 0.08);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.hotline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    color: var(--primary-color);
    font-weight: 600;
}

.hotline i {
    font-size: 1.1rem;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* ===================================
   首屏Banner
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #004494 0%, #007bff 50%, #00a8cc 100%);
    overflow: hidden;
    padding-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../imgs/business-handshake-professional-partnership.jpg') center/cover no-repeat;
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 68, 148, 0.9) 0%, rgba(0, 123, 255, 0.8) 50%, rgba(0, 168, 204, 0.7) 100%);
}

.hero .container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
}

.hero-content {
    flex: 1;
    color: white;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    opacity: 0.95;
}

.hero-desc {
    font-size: 1.1rem;
    margin-bottom: 35px;
    opacity: 0.9;
    max-width: 550px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

.hero-features {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50px;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
}

.feature-badge i {
    color: #4cd137;
}

.hero-image {
    flex: 1;
    max-width: 500px;
}

.hero-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ===================================
   服务内容
   =================================== */
.services {
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--bg-white);
    border-radius: 16px;
    padding: 35px 30px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    margin-bottom: 25px;
}

.service-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.service-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-list {
    margin-bottom: 25px;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text-medium);
    font-size: 0.9rem;
}

.service-list li i {
    color: #27ae60;
    font-size: 0.9rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.95rem;
}

.service-link:hover {
    gap: 12px;
}

/* ===================================
   服务优势
   =================================== */
.advantages {
    background: var(--bg-light);
}

.advantages-wrapper {
    display: flex;
    gap: 60px;
    align-items: center;
}

.advantages-content {
    flex: 1;
}

.advantage-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--bg-white);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.advantage-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(10px);
}

.advantage-icon {
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
    flex-shrink: 0;
    margin: 0 auto;
}

.advantage-text h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.advantage-text p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

.advantages-image {
    flex: 1;
    position: relative;
}

.advantages-image > img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.advantage-stats {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
    background: var(--bg-white);
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.stat-item {
    text-align: center;
    padding: 0 20px;
    border-right: 1px solid var(--border-color);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===================================
   服务流程
   =================================== */
.process {
    background: var(--bg-white);
}

.process-timeline {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    position: relative;
    padding: 20px 0;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 65px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    z-index: 1;
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 10px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    font-size: 1.2rem;
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
}

.step-content {
    background: var(--bg-light);
    padding: 25px 20px;
    border-radius: 12px;
    transition: var(--transition);
}

.step-content:hover {
    background: var(--bg-white);
    box-shadow: var(--shadow-md);
}

.step-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-light));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    margin: 0 auto 15px;
}

.step-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.step-desc {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.process-connector {
    display: flex;
    align-items: center;
    padding-top: 50px;
    color: var(--primary-color);
    font-size: 1.2rem;
}

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

.about-wrapper {
    display: flex;
    gap: 60px;
    align-items: center;
}

.about-images {
    flex: 1;
    position: relative;
}

.about-img-main {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.about-img-sub {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 45%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 5px solid var(--bg-white);
}

.about-content {
    flex: 1;
}

.about-text {
    margin-bottom: 30px;
}

.about-text p {
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-features {
    display: flex;
    gap: 30px;
    margin-bottom: 35px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}

.about-feature i {
    font-size: 2rem;
    color: var(--primary-color);
}

.about-feature strong {
    display: block;
    font-size: 1.4rem;
    color: var(--text-dark);
}

.about-feature span {
    font-size: 0.85rem;
    color: var(--text-light);
}

.about-certifications h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.cert-icons {
    display: flex;
    gap: 20px;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--bg-white);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.cert-item i {
    color: var(--accent-color);
}

.cert-item span {
    font-size: 0.9rem;
    color: var(--text-medium);
}

/* ===================================
   成功案例
   =================================== */
.cases {
    background: var(--bg-white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.case-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.case-avatar {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.case-info h4 {
    font-size: 1.1rem;
    font-weight: 700;
}

.case-info span {
    font-size: 0.85rem;
    opacity: 0.9;
}

.case-content {
    padding: 20px;
}

.case-detail {
    margin-bottom: 15px;
}

.case-detail:last-child {
    margin-bottom: 0;
}

.detail-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 5px;
}

.detail-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary-color);
}

.detail-desc {
    font-size: 0.9rem;
    color: var(--text-medium);
    line-height: 1.6;
}

.case-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
}

.case-rating {
    color: #f39c12;
    font-size: 0.9rem;
}

.case-status {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.85rem;
    font-weight: 600;
}

.case-status.success {
    color: #27ae60;
}

/* ===================================
   新闻资讯
   =================================== */
.news {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: var(--bg-white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.news-date {
    font-size: 0.85rem;
    color: var(--text-light);
}

.news-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 86, 179, 0.1);
    color: var(--primary-color);
    font-size: 0.8rem;
    border-radius: 20px;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.4;
    transition: var(--transition);
}

.news-card:hover .news-title {
    color: var(--primary-color);
}

.news-excerpt {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.9rem;
}

.news-link:hover {
    gap: 12px;
}

/* ===================================
   常见问题
   =================================== */
.faq {
    background: var(--bg-white);
}

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

.faq-item {
    margin-bottom: 15px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: var(--bg-light);
    cursor: pointer;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(0, 86, 179, 0.05);
    color: var(--primary-color);
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--bg-white);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 20px 25px;
    color: var(--text-medium);
    line-height: 1.7;
}

.faq-answer ul {
    padding: 0 25px 20px;
}

.faq-answer ul li {
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    color: var(--text-medium);
}

.faq-answer ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ===================================
   客户评价
   =================================== */
.reviews {
    background: linear-gradient(135deg, #004494 0%, #007bff 100%);
    color: white;
}

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

.reviews .section-title::after {
    background: rgba(255, 255, 255, 0.5);
}

.reviews .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.reviews-slider {
    position: relative;
    overflow: hidden;
    padding: 20px 0;
}

.reviews-track {
    display: flex;
    gap: 30px;
    transition: transform 0.5s ease;
}

.review-card {
    flex: 0 0 calc(33.333% - 20px);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.review-rating {
    color: #f39c12;
    margin-bottom: 20px;
    font-size: 1rem;
}

.review-content {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 25px;
    opacity: 0.95;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.author-info strong {
    display: block;
    font-size: 1rem;
}

.author-info span {
    font-size: 0.85rem;
    opacity: 0.8;
}

.reviews-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 40px;
}

.review-btn {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.reviews-dots {
    display: flex;
    gap: 10px;
}

.reviews-dots .dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.reviews-dots .dot.active {
    background: white;
}

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

.contact-wrapper {
    display: flex;
    gap: 60px;
}

.contact-info {
    flex: 1;
}

.contact-details {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.contact-text p {
    color: var(--text-medium);
    font-size: 1rem;
}

.contact-note {
    font-size: 0.85rem;
    color: var(--text-light);
}

.contact-qr img {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    margin-left: auto;
}

.contact-features {
    display: flex;
    gap: 20px;
}

.cf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--bg-light);
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--text-medium);
}

.cf-item i {
    color: #27ae60;
}

.contact-form-wrapper {
    flex: 1;
    max-width: 500px;
}

.form-header {
    text-align: center;
    margin-bottom: 30px;
}

.form-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.form-header p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-light);
    padding: 35px;
    border-radius: 16px;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    flex: 1;
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: var(--transition);
    background: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 86, 179, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ===================================
   页脚
   =================================== */
.footer {
    background: #1a2a3a;
    color: rgba(255, 255, 255, 0.8);
    padding-top: 60px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.footer-logo i {
    color: var(--primary-light);
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

.footer-contact i {
    color: var(--primary-light);
    width: 20px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 0;
}

.footer-legal p {
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.disclaimer {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-badges {
    display: flex;
    gap: 15px;
}

.badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 0.8rem;
}

.badge i {
    color: #27ae60;
}

/* ===================================
   悬浮组件
   =================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

.floating-contact {
    position: fixed;
    bottom: 100px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 998;
}

.float-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 50px;
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.phone-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.wechat-btn {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
}

.float-btn span {
    white-space: nowrap;
}

/* ===================================
   响应式设计
   =================================== */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-desc {
        max-width: 100%;
    }

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

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

    .hero-image {
        max-width: 400px;
    }

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

    .advantages-wrapper {
        flex-direction: column;
    }

    .process-timeline {
        flex-wrap: wrap;
        justify-content: center;
    }

    .process-connector {
        display: none;
    }

    .process-step {
        flex: 0 0 calc(33.333% - 20px);
    }

    .about-wrapper {
        flex-direction: column;
    }

    .about-images {
        max-width: 500px;
        margin: 0 auto;
    }

    .about-img-sub {
        right: -20px;
        width: 40%;
    }

    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-wrapper {
        flex-direction: column;
    }

    .contact-form-wrapper {
        max-width: 100%;
    }

    .footer-top {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .header-actions {
        display: none;
    }

    .mobile-toggle {
        display: block;
    }

    .section {
        padding: 60px 0;
    }

    .hero {
        padding-top: 120px;
        min-height: auto;
        padding-bottom: 90px;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-features {
        /*flex-direction: column;*/
        align-items: center;
    }

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

    .process-step {
        flex: 0 0 100%;
        max-width: 300px;
        margin: 0 auto 30px;
    }

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

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

    .review-card {
        flex: 0 0 100%;
    }

    .contact-features {
        flex-wrap: wrap;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .footer-top {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .footer-badges {
        flex-wrap: wrap;
        justify-content: center;
    }

    .floating-contact {
        right: 20px;
    }

    .float-btn span {
        display: none;
    }

    .float-btn {
        padding: 15px;
        border-radius: 50%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .hero-title {
        font-size: 1.6rem;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 1rem;
    }

    .service-card {
        padding: 25px 20px;
    }

    .advantage-item {
        flex-direction: column;
        text-align: center;
    }

    .about-features {
        flex-direction: column;
    }

    .about-img-sub {
        display: none;
    }

    .advantage-stats {
        flex-direction: column;
        gap: 15px;
        padding: 15px 20px;
    }

    .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 10px 0;
    }

    .stat-item:last-child {
        border-bottom: none;
    }
}