/* CSS Variables */
:root {
    --primary-color: #0056B3;
    --primary-dark: #004494;
    --secondary-color: #00A8E8;
    --accent-color: #FF6B00;
    --accent-hover: #E55F00;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #F8F9FA;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    --success-color: #28A745;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

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

ul {
    list-style: none;
}

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

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

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

.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-title p {
    font-size: 16px;
    color: var(--text-light);
    margin-top: 20px;
}

.section {
    padding: 80px 0;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-text span {
    color: var(--secondary-color);
}

.nav-menu {
    display: flex;
    gap: 35px;
}

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

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

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

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

.header-phone {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 12px 20px;
    border-radius: 50px;
    font-weight: 600;
}

.header-phone i {
    font-size: 18px;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    height: 100%;
    background: url('imgs/modern-office-building-facade-buro.jpg') center/cover;
    clip-path: polygon(15% 0, 100% 0, 100% 100%, 0% 100%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 86, 179, 0.1);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 25px;
}

.hero-badge i {
    font-size: 12px;
}

.hero h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-dark);
    margin-bottom: 25px;
}

.hero h1 span {
    color: var(--primary-color);
}

.hero p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 35px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.5);
}

.btn-secondary {
    background: var(--bg-white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.hero-form {
    position: absolute;
    right: 8%;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    width: 400px;
    z-index: 2;
}

.hero-form h3 {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 25px;
    text-align: center;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.hero-form .btn {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 17px;
}

.form-note {
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
    margin-top: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.form-note i {
    color: var(--success-color);
}

/* Advantages Section */
.advantages {
    background: var(--bg-light);
}

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

.advantage-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, rgba(0, 86, 179, 0.1), rgba(0, 168, 232, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon i {
    font-size: 36px;
    color: var(--primary-color);
}

.advantage-card h3 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.advantage-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

/* Services Section */
.services {
    background: var(--bg-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    display: flex;
    gap: 25px;
    padding: 35px;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.service-image {
    flex-shrink: 0;
    width: 180px;
    height: 140px;
    border-radius: 12px;
    overflow: hidden;
}

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

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

.service-content h3 {
    font-size: 22px;
    color: var(--text-dark);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-content h3 i {
    color: var(--primary-color);
}

.service-content p {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.service-features span {
    background: rgba(0, 86, 179, 0.08);
    color: var(--primary-color);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
}

/* Process Section */
.process {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 0 50px;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 100px;
    right: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.process-step {
    text-align: center;
    position: relative;
    flex: 1;
    max-width: 200px;
}

.step-number {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    background: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-color);
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1;
}

.step-number::after {
    content: attr(data-step);
    position: absolute;
    top: -5px;
    right: -5px;
    width: 30px;
    height: 30px;
    background: var(--accent-color);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.process-step h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.process-step p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* About Section */
.about {
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    position: relative;
}

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

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 4px solid var(--primary-color);
    border-radius: 16px;
    z-index: -1;
}

.about-text h3 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.about-text h3 span {
    color: var(--primary-color);
}

.about-text > p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 30px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 35px;
}

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

.about-feature i {
    width: 40px;
    height: 40px;
    background: rgba(0, 86, 179, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.about-feature span {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 500;
}

.about-stats {
    display: flex;
    gap: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

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

.stat-number {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 8px;
}

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

/* Cases Section */
.cases {
    background: var(--bg-light);
}

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

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

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

.case-header {
    padding: 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.case-header h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.case-header span {
    font-size: 14px;
    opacity: 0.9;
}

.case-body {
    padding: 25px;
}

.case-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

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

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

.case-item span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
}

.case-item span.success {
    color: var(--success-color);
}

.case-footer {
    padding: 20px 25px;
    background: var(--bg-light);
}

.case-quote {
    font-size: 14px;
    color: var(--text-light);
    font-style: italic;
    line-height: 1.7;
}

.case-quote i {
    color: var(--primary-color);
    margin-right: 5px;
}

/* News Section */
.news {
    background: var(--bg-white);
}

.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);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    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-date {
    font-size: 13px;
    color: var(--primary-color);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.news-content h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.5;
    transition: var(--transition);
}

.news-card:hover .news-content h3 {
    color: var(--primary-color);
}

.news-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
}

.news-more i {
    transition: var(--transition);
}

.news-card:hover .news-more i {
    transform: translateX(5px);
}

/* FAQ Section */
.faq {
    background: var(--bg-light);
}

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

.faq-item {
    background: var(--bg-white);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    padding: 25px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(0, 86, 179, 0.03);
}

.faq-question h3 {
    font-size: 17px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

.faq-question h3 i {
    width: 30px;
    height: 30px;
    background: rgba(0, 86, 179, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 14px;
}

.faq-question .toggle {
    width: 30px;
    height: 30px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: var(--transition);
}

.faq-item.active .faq-question .toggle {
    transform: rotate(180deg);
    background: var(--primary-color);
    color: white;
}
.faq-item.active .faq-answer{
    max-height: unset;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer-content {
    padding: 0 30px 25px;
}

.faq-answer-content p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

/* Testimonials Section */
.testimonials {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.testimonials .section-title h2 {
    color: white;
}

.testimonials .section-title p {
    color: rgba(255, 255, 255, 0.8);
}

.testimonials-slider {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.testimonial-item {
    text-align: center;
    padding: 40px;
    display: none;
}
.testimonial-item.active{
    display: block;
}

.testimonial-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.3);
}

.testimonial-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-content {
    font-size: 20px;
    line-height: 1.8;
    margin-bottom: 30px;
    font-style: italic;
}

.testimonial-content i {
    font-size: 24px;
    margin: 0 5px;
    opacity: 0.5;
}

.testimonial-author {
    font-size: 18px;
    font-weight: 700;
}

.testimonial-role {
    font-size: 14px;
    opacity: 0.8;
    margin-top: 5px;
}

.testimonial-rating {
    margin-top: 15px;
    color: #FFD700;
    font-size: 18px;
}

.testimonial-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

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

.testimonial-dot.active {
    background: white;
    transform: scale(1.2);
}

/* Contact Section */
.contact {
    background: var(--bg-white);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 28px;
    color: var(--text-dark);
    margin-bottom: 25px;
}

.contact-info > p {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 35px;
}

.contact-details {
    margin-bottom: 35px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-item-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 86, 179, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 22px;
    flex-shrink: 0;
}

.contact-item-text h4 {
    font-size: 16px;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.contact-item-text p {
    font-size: 15px;
    color: var(--text-light);
}

.contact-social {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 45px;
    height: 45px;
    background: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 18px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    color: white;
}

.contact-form {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 16px;
}

.contact-form h3 {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 30px;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about .logo {
    margin-bottom: 20px;
}

.footer-about .logo-text {
    color: white;
}

.footer-about .logo-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.footer-about p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: 25px;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 25px;
    position: relative;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

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

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

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
    display: flex;
    gap: 25px;
}

.footer-bottom-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

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

/* Floating Contact */
.floating-contact {
    position: fixed;
    right: 30px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.floating-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.floating-btn:hover {
    transform: scale(1.1);
}

.floating-btn.wechat {
    background: #07C160;
}

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

.floating-btn.top {
    background: var(--text-light);
    font-size: 20px;
}

.floating-btn .badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile Bottom Bar */
.mobile-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    padding: 15px 20px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 999;
    justify-content: space-between;
}

.mobile-bottom-bar .btn {
    flex: 1;
    justify-content: center;
    padding: 14px 20px;
    font-size: 15px;
}

.mobile-bottom-bar .btn-wechat {
    margin-right: 10px;
    background: #07C160;
    color: white;
}

.mobile-bottom-bar .btn-call {
    background: var(--primary-color);
    color: white;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    padding: 50px;
    border-radius: 20px;
    text-align: center;
    max-width: 450px;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: rgba(40, 167, 69, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: var(--success-color);
}

.modal-content h3 {
    font-size: 26px;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.modal-content p {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 30px;
}

.modal-content .btn {
    min-width: 150px;
    justify-content: center;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-bg {
        width: 45%;
        clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
    }

    .hero-form {
        right: 5%;
        width: 350px;
        padding: 30px;
    }

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: 70px;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-menu a {
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .mobile-toggle {
        display: flex;
    }

    .header-phone {
        display: none;
    }

    .hero {
        padding-top: 70px;
    }

    .hero-bg {
        width: 60%;
        clip-path: polygon(45% 0, 100% 0, 100% 100%, 0% 100%);
    }

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

    .hero h1 {
        font-size: 36px;
    }

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

    .hero-form {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        width: 100%;
        margin-top: 40px;
    }
    .advantages-grid{
        gap: 15px;
    }
    .advantage-card{
        padding: 20px 15px;
    }
    .service-card{
        display: grid;
        padding: 20px 15px;
        gap: 15px;
    }
    .service-image{
        width: 100%;
    }
    .process-step{
        max-width: unset;
    }
    .about-stats{
        display: grid;
        gap: 30px;
    }
    .process-steps {
        flex-direction: column;
        gap: 30px;
        padding: 0 20px;
    }

    .process-steps::before {
        display: none;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

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

    .contact-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

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

    .mobile-bottom-bar {
        display: flex;
    }

    .floating-contact {
        display: none;
    }
}

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

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }