/* CSS Variables */
:root {
    --primary-color: #0056B3;
    --primary-dark: #004494;
    --primary-light: #E6F0FF;
    --secondary-color: #00A86B;
    --accent-color: #FFA500;
    --text-dark: #333333;
    --text-medium: #666666;
    --text-light: #999999;
    --white: #FFFFFF;
    --light-bg: #F8FAFC;
    --border-color: #E5E7EB;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

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

.section-padding {
    padding: 80px 0;
}

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

.section-title h2 {
    font-size: 36px;
    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: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 86, 179, 0.3);
}

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

.btn-accent:hover {
    background: #E69500;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 165, 0, 0.3);
}

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

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

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 32px;
}

.nav-menu {
    display: flex;
    gap: 25px;
}

.nav-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    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-contact {
    display: flex;
    align-items: center;
    gap: 15px;
}

.hotline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    color: var(--primary-color);
    font-weight: 600;
}

.hotline i {
    font-size: 18px;
}

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

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0056b3c7 0%, #b3d4fcb8 100%), url(../imgs/business-meeting-strategy-blue-office.jpg) center / cover;
    padding-top: 70px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.3;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    line-height: 1.8;
}

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

.trust-badges {
    display: flex;
    gap: 60px;
    margin-top: 50px;
    flex-wrap: wrap;
    justify-content: center;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-size: 14px;
}

.trust-badge i {
    font-size: 20px;
    color: #FFD700;
}

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

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

.service-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

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

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

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

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: var(--primary-color);
}

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

.service-card:hover .service-icon i {
    color: var(--white);
}

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

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

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

.advantages-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.advantage-item {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: var(--light-bg);
    border-radius: 15px;
    transition: var(--transition);
}

.advantage-item:hover {
    background: var(--primary-light);
    transform: translateX(10px);
}

.advantage-icon {
    width: 70px;
    height: 70px;
    background: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.advantage-icon i {
    font-size: 32px;
    color: var(--primary-color);
}

.advantage-content h3 {
    font-size: 20px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

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

/* Process Section */
.process {
    background: linear-gradient(135deg, var(--primary-color) 0%, #004080 100%);
    color: var(--white);
}

.process .section-title h2 {
    color: var(--white);
}

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

.process-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    margin-top: 40px;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 3px;
    background: rgba(255, 255, 255, 0.3);
}

.process-step {
    text-align: center;
    position: relative;
    flex: 1;
    max-width: 250px;
}

.step-number {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    position: relative;
    z-index: 1;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.process-step h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.process-step p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

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

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

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow-hover);
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    width: 100%;
    height: 100%;
    border: 4px solid var(--primary-color);
    border-radius: 15px;
    z-index: -1;
}

.about-content h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-content p {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.9;
    margin-bottom: 20px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

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

.about-feature i {
    width: 24px;
    height: 24px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

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

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

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

.case-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

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

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

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

.case-content {
    padding: 25px;
}

.case-tag {
    display: inline-block;
    padding: 5px 12px;
    background: var(--primary-light);
    color: var(--primary-color);
    font-size: 12px;
    border-radius: 20px;
    margin-bottom: 12px;
}

.case-content h3 {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.case-content p {
    font-size: 14px;
    color: var(--text-medium);
    line-height: 1.7;
}

.case-result {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.result-item {
    flex: 1;
    text-align: center;
}

.result-item span {
    display: block;
    font-size: 12px;
    color: var(--text-light);
}

.result-item strong {
    font-size: 16px;
    color: var(--primary-color);
}

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

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

.news-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.news-image {
    height: 180px;
    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: 12px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 17px;
    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-medium);
    line-height: 1.7;
}

.news-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 500;
}

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

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

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

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

.faq-item {
    margin-bottom: 15px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--primary-light);
}

.faq-question h3 {
    font-size: 16px;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 12px;
}

.faq-question h3 i {
    color: var(--primary-color);
    font-size: 18px;
}

.faq-toggle {
    font-size: 20px;
    color: var(--primary-color);
    transition: var(--transition);
}

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

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

.faq-answer p {
    padding: 20px 25px;
    font-size: 14px;
    color: var(--text-medium);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

/* Reviews Section */
.reviews {
    background: linear-gradient(135deg, #004080 0%, var(--primary-color) 100%);
    color: var(--white);
}

.reviews .section-title h2 {
    color: var(--white);
}

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

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

.review-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.review-stars {
    display: flex;
    gap: 5px;
    margin-bottom: 15px;
}

.review-stars i {
    color: #FFD700;
    font-size: 16px;
}

.review-content {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

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

.reviewer-avatar {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 600;
    color: var(--white);
}

.reviewer-info h4 {
    font-size: 16px;
    margin-bottom: 3px;
}

.reviewer-info span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
}

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

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

.contact-info h3 {
    font-size: 24px;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.contact-info > p {
    font-size: 15px;
    color: var(--text-medium);
    line-height: 1.8;
    margin-bottom: 30px;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

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

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

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

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

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

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

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

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

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-dark);
    margin-bottom: 8px;
    font-weight: 500;
}

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

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

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

.contact-form .btn {
    width: 100%;
    padding: 16px;
    font-size: 16px;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

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

.footer-about .logo {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-about p {
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-links h4 {
    color: var(--white);
    font-size: 16px;
    margin-bottom: 20px;
}

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

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

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

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

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom .disclaimer {
    margin-top: 10px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}

/* Floating Action Button */
/*.fab {*/
/*    position: fixed;*/
/*    bottom: 30px;*/
/*    right: 30px;*/
/*    width: 60px;*/
/*    height: 60px;*/
/*    background: var(--secondary-color);*/
/*    color: var(--white);*/
/*    border-radius: 50%;*/
/*    display: flex;*/
/*    align-items: center;*/
/*    justify-content: center;*/
/*    font-size: 24px;*/
/*    box-shadow: 0 5px 20px rgba(0, 168, 107, 0.4);*/
/*    cursor: pointer;*/
/*    z-index: 999;*/
/*    transition: var(--transition);*/
/*}*/

/*.fab:hover {*/
/*    transform: scale(1.1);*/
/*    box-shadow: 0 8px 30px rgba(0, 168, 107, 0.5);*/
/*}*/

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 180px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        gap: 20px;
        box-shadow: var(--shadow);
        transform: translateY(-150%);
        transition: var(--transition);
    }

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

    .mobile-toggle {
        display: flex;
    }

    .header-contact {
        display: none;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .section-padding {
        padding: 60px 0;
    }

    .section-title h2 {
        font-size: 28px;
    }

    .services-grid,
    .advantages-container,
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
    }

    .process-steps {
        flex-direction: column;
        gap: 30px;
        
    }
    .process-step{
        max-width: 100%;
    }
    .process-steps::before {
        display: none;
    }

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

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

    .footer-about .logo {
        justify-content: center;
    }

    .about-features {
        /*grid-template-columns: 1fr;*/
    }

    .trust-badges {
        /*flex-direction: column;*/
        gap: 25px;
    }
    .back-to-top{
        right: 20px;
    }
}