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

:root {
    --primary-color: #EA3643;
    --secondary-color: #333;
    --text-color: #666;
    --border-color: #e0e0e0;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', 'Source Han Sans CN', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', '微软雅黑', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    font-size: 16px;
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    background: #d62936;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(234, 54, 67, 0.3);
}

.btn-block {
    width: 100%;
    display: block;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 16px;
    color: var(--secondary-color);
    font-weight: 500;
    white-space: nowrap;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-list a {
    color: var(--secondary-color);
    font-size: 16px;
    font-weight: 500;
    padding: 5px 0;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

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

.header-phone {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 18px;
}

.phone-icon {
    font-size: 20px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--secondary-color);
    transition: var(--transition);
}

/* 轮播横幅 */
.banner {
    margin-top: 0px;
    position: relative;
    height: 650px;
    overflow: hidden;
    padding-bottom: 0px;
}

.banner-slider {
    position: relative;
    height: 100%;
}

.banner-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    background: linear-gradient(135deg, #EA3643 0%, #ff6b7a 100%);
    display: flex;
    align-items: center;
}

.banner-item.active {
    opacity: 1;
    z-index: 1;
}

.banner-item:nth-child(1) {
    background: linear-gradient(135deg, #EA3643 0%, #ff6b7a 100%);
}

.banner-item:nth-child(2) {
    background: linear-gradient(135deg, #d62936 0%, #EA3643 100%);
}

.banner-item:nth-child(3) {
    background: linear-gradient(135deg, #ff6b7a 0%, #d62936 100%);
}

.banner-content {
    width: 100%;
    color: var(--white);
}

.banner-text-wrapper {
    max-width: 100%;
    text-align: center;
}

.banner-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 30px;
    font-size: 14px;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease;
    backdrop-filter: blur(10px);
}

.banner-tag i {
    font-size: 16px;
}

.banner-title {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 25px;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.banner-subtitle {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.3s backwards;
}

.banner-features {
    display: flex;
    gap: 25px;
    margin-bottom: 35px;
    animation: fadeInUp 1s ease 0.4s backwards;
    justify-content: center;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
}

.feature-item i {
    color: #ffd700;
    font-size: 18px;
}

.banner-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 35px;
    animation: fadeInUp 1s ease 0.4s backwards;
    justify-content: center;
}

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

.stat-num {
    font-size: 42px;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-text {
    font-size: 14px;
    opacity: 0.9;
}

.banner-areas {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 35px;
    animation: fadeInUp 1s ease 0.4s backwards;
    justify-content: center;
}

.area-tag {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    font-size: 14px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.banner-buttons {
    display: flex;
    gap: 15px;
    animation: fadeInUp 1s ease 0.5s backwards;
    justify-content: center;
}

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

.btn-outline:hover {
    background: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
}

.banner-arrows {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    pointer-events: none;
    z-index: 10;
}

.banner-arrow {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: var(--white);
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    pointer-events: auto;
    backdrop-filter: blur(10px);
}

.banner-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: var(--white);
    transform: scale(1.1);
}

.banner-arrow:active {
    transform: scale(0.95);
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 2;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--white);
    width: 30px;
    border-radius: 6px;
}

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

/* 公共区块样式 */
section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 36px;
    color: var(--secondary-color);
    font-weight: 700;
    margin-bottom: 10px;
}

.section-subtitle {
    font-size: 14px;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-color);
    max-width: 700px;
    margin: 0 auto;
}

/* 公司介绍 */
.intro {
    background: var(--bg-light);
}

.intro-wrapper {
    display: grid;
    grid-template-columns: 45% 55%;
    gap: 50px;
    align-items: center;
}

.intro-image {
    width: 100%;
    height: 100%;
    min-height: 400px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    background: linear-gradient(135deg, #EA3643 0%, #ff6b7a 100%);
}

.intro-image::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.8);
    font-size: 24px;
    font-weight: 600;
}

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

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

.intro-right {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.intro-text {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
    text-align: justify;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(234, 54, 67, 0.1);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-color);
}

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

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 5px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(234, 54, 67, 0.15);
    border-color: var(--primary-color);
}

.service-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

.service-icon i {
    display: block;
}

.service-title {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: 600;
    text-align: center;
}

.service-desc {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.service-features li {
    font-size: 13px;
    color: var(--text-color);
    padding-left: 15px;
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* 解决方案 */
.solutions {
    background: var(--bg-light);
}

.solutions-tabs {
    max-width: 900px;
    margin: 0 auto;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 30px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    transition: var(--transition);
}

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

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.solution-item {
    background: var(--white);
    padding: 35px 30px;
    border-radius: 12px;
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

/* .solution-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--primary-color);
    transition: var(--transition);
} */

.solution-item:hover::before {
    height: 100%;
}

.solution-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(234, 54, 67, 0.15);
    border-color: var(--primary-color);
}

.solution-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #EA3643 0%, #ff6b7a 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.solution-icon i {
    font-size: 28px;
    color: var(--white);
}

.solution-item:hover .solution-icon {
    transform: scale(1.1) rotate(5deg);
}

.solution-item h4 {
    font-size: 18px;
    color: var(--secondary-color);
    margin-bottom: 12px;
    font-weight: 600;
}

.solution-item p {
    font-size: 14px;
    color: var(--text-color);
    line-height: 1.6;
    margin-bottom: 15px;
}

.solution-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.solution-tags span {
    padding: 4px 12px;
    background: var(--bg-light);
    border-radius: 12px;
    font-size: 12px;
    color: var(--primary-color);
    font-weight: 500;
}

/* 服务区域 */
.service-area {
    background: var(--white);
}

.area-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    max-width: 900px;
    margin: 0 auto;
}

.area-item {
    padding: 15px 20px;
    background: var(--bg-light);
    text-align: center;
    border-radius: 8px;
    font-size: 14px;
    color: var(--secondary-color);
    transition: var(--transition);
    cursor: pointer;
}

.area-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.05);
}

/* 案例展示 */
.cases {
    background: var(--bg-light);
}

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

.case-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.case-card a {
    display: block;
    color: inherit;
    text-decoration: none;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

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

.case-image {
    height: 250px;
    overflow: hidden;
    background: #f0f0f0;
    position: relative;
}

/* .case-image::after {
    content: '案例图片';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #999;
    font-size: 18px;
} */

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

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

.case-info {
    padding: 25px;
}

.case-title {
    font-size: 20px;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.case-desc {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.case-tags {
    display: flex;
    gap: 10px;
}

.case-tags span {
    padding: 5px 15px;
    background: var(--bg-light);
    border-radius: 15px;
    font-size: 12px;
    color: var(--primary-color);
}

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

.news-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.news-tab-btn {
    padding: 10px 25px;
    background: transparent;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: var(--text-color);
    position: relative;
}

.news-tab-btn.active {
    color: var(--primary-color);
    font-weight: 600;
}

.news-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-color);
}

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

.news-card {
    background: var(--bg-light);
    border-radius: 10px;
    transition: var(--transition);
}

.news-card a {
    display: flex;
    gap: 20px;
    padding: 25px;
    color: inherit;
    text-decoration: none;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.news-date {
    text-align: center;
    min-width: 60px;
}

.date-day {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
}

.date-month {
    display: block;
    font-size: 12px;
    color: var(--text-color);
    margin-top: 5px;
}

.news-content {
    flex: 1;
}

.news-title {
    font-size: 16px;
    color: var(--secondary-color);
    margin-bottom: 10px;
    font-weight: 600;
    line-height: 1.4;
}

.news-desc {
    font-size: 14px;
    color: var(--text-color);
    line-height: 1.6;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.info-icon {
    font-size: 24px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    flex-shrink: 0;
}

.info-icon i {
    display: block;
}

.info-text h4 {
    font-size: 16px;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.info-text p {
    font-size: 14px;
    color: var(--text-color);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.contact-form h3 {
    font-size: 24px;
    color: var(--secondary-color);
    margin-bottom: 25px;
    text-align: center;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}

.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(234, 54, 67, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* 页脚 */
.footer {
    background: var(--secondary-color);
    color: var(--white);
    padding: 50px 0 20px;
}

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

.footer-col h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--white);
}

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

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 10px;
}

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

.footer-keywords a {
    color: rgba(255, 255, 255, 0.7);
    margin: 0 8px;
    font-size: 13px;
}

.footer-keywords a:hover {
    color: var(--primary-color);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 80px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

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

.back-to-top:hover {
    background: #d62936;
    transform: translateY(-5px);
}

/* 在线客服 */
.online-service {
    position: fixed;
    bottom: 150px;
    right: 30px;
    z-index: 999;
}

.service-item {
    width: 50px;
    height: 50px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
    cursor: pointer;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    color: var(--primary-color);
    font-size: 22px;
}

.service-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.service-item i {
    display: block;
}

/* 移动端菜单遮罩 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .intro-wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .intro-image {
        min-height: 300px;
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .area-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .logo-img {
        height: 35px;
    }
    
    .logo-text {
        font-size: 13px;
    }
    
    .nav {
        display: block;
        position: fixed;
        top: 75px;
        left: -100%;
        width: 280px;
        height: calc(100vh - 75px);
        background: var(--white);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
        transition: left 0.3s ease;
        z-index: 999;
        overflow-y: auto;
        padding: 20px 0;
    }
    
    .nav.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
    }
    
    .nav-list li {
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-list a {
        display: block;
        padding: 15px 20px;
        font-size: 15px;
    }
    
    .nav-list a::after {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        z-index: 1000;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .banner {
        height: 500px;
    }
    
    .banner-arrows {
        padding: 0 15px;
    }
    
    .banner-arrow {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .banner-dots {
        display: none;
    }
    
    .banner-title {
        font-size: 32px;
    }
    
    .banner-subtitle {
        font-size: 15px;
        line-height: 1.6;
    }
    
    .banner-features {
        flex-direction: column;
        gap: 12px;
    }
    
    .banner-stats {
        gap: 25px;
    }
    
    .stat-num {
        font-size: 32px;
    }
    
    .stat-text {
        font-size: 12px;
    }
    
    .banner-buttons {
        flex-direction: row;
        gap: 10px;
    }
    
    .banner-buttons .btn {
        flex: 1;
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .services-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .area-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .stat-item {
        padding: 20px 15px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .stat-label {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .logo-img {
        height: 30px;
    }
    
    .logo-text {
        font-size: 12px;
    }
    
    .header-phone {
        font-size: 14px;
        display: none;
    }
    
    .banner {
        height: 450px;
    }
    
    .banner-arrows {
        padding: 0 10px;
    }
    
    .banner-arrow {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
    
    .banner-title {
        font-size: 28px;
    }
    
    .banner-subtitle {
        font-size: 14px;
    }
    
    .banner-tag {
        font-size: 12px;
        padding: 6px 15px;
    }
    
    .area-tag {
        font-size: 12px;
        padding: 6px 15px;
    }
    
    section {
        padding: 50px 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .intro-stats {
        gap: 10px;
    }
    
    .stat-item {
        padding: 15px 10px;
    }
    
    .stat-number {
        font-size: 28px;
        margin-bottom: 5px;
    }
    
    .stat-label {
        font-size: 12px;
    }
}