/* ============================================
   BEIJING HUOLI - PROFESSIONAL WEBSITE STYLES
   IBM-Inspired Clean Design
   ============================================= */

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

:root {
    --primary-color: #003d99;
    --primary-dark: #002d7a;
    --primary-light: #1a5ad9;
    --accent-green: #1b5e20;
    --accent-yellow: #e6b200;
    --accent-red: #b71c1c;
    --gray-900: #0f0f0f;
    --gray-800: #212121;
    --gray-700: #424242;
    --gray-600: #616161;
    --gray-500: #757575;
    --gray-300: #bdbdbd;
    --gray-200: #e0e0e0;
    --gray-100: #f5f5f5;
    --white: #ffffff;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.18);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    color: var(--gray-700);
    background-color: var(--white);
    line-height: 1.8;
    letter-spacing: 0.3px;
    font-weight: 500;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin: 2rem 0 1rem 0;
    color: var(--gray-900);
    letter-spacing: -0.5px;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin: 2.5rem 0 1.5rem 0;
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
}

h3 {
    font-size: 1.75rem;
    font-weight: 700;
}

h4 {
    font-size: 1.35rem;
    font-weight: 600;
}

h5 {
    font-size: 1.1rem;
    font-weight: 600;
}

h6 {
    font-size: 1rem;
    font-weight: 600;
}

p {
    color: var(--gray-700);
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ============================================
   HEADER AND NAVIGATION
   ============================================= */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 2px solid var(--primary-color);
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: 1.25rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    flex-shrink: 0;
}

.logo {
    width: 140px;
    height: 56px;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    flex: 1;
    justify-content: center;
    margin-left: 3rem;
}

.nav-menu a {
    color: var(--gray-700);
    font-weight: 600;
    padding: 0.75rem 0;
    border-bottom: 3px solid transparent;
    transition: var(--transition-smooth);
    text-transform: uppercase;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 0.5rem;
}

.hamburger span {
    width: 24px;
    height: 3px;
    background-color: var(--gray-900);
    transition: 0.3s ease;
    border-radius: 2px;
}

/* Mobile Menu */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        gap: 0;
        margin-left: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        padding: 1rem 0;
        border-bottom: 1px solid var(--gray-200);
    }

    .nav-menu a {
        display: block;
        border: none;
    }

    .nav-menu a.active {
        color: var(--primary-color);
        background-color: var(--gray-100);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }
}

/* ============================================
   BUTTONS
   ============================================= */
.btn-primary,
.btn-secondary,
.btn-outline {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 6px;
    font-weight: 700;
    font-size: 1.05rem;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
    text-decoration: none;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--gray-900);
    border: 2px solid var(--gray-900);
}

.btn-outline:hover {
    background-color: var(--gray-900);
    color: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.25rem 3.5rem;
    font-size: 1.15rem;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-outline:hover {
    text-decoration: none;
}

/* ============================================
   SECTIONS AND LAYOUTS
   ============================================= */

/* Page Header */
.page-header {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e8eaed 100%);
    text-align: center;
    border-bottom: 1px solid var(--gray-200);
}

.page-header h1 {
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.page-header p {
    font-size: 1.125rem;
    color: var(--gray-700);
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8f9fa 0%, rgba(26, 115, 232, 0.05) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.75rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--gray-700);
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-icon {
    width: 100%;
    max-width: 300px;
    height: auto;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-icon {
        max-width: 200px;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-buttons a {
        width: 100%;
        text-align: center;
    }
}

/* Highlights Section */
.highlights {
    padding: 4rem 0;
    background-color: var(--white);
}

.highlights h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.highlight-card {
    padding: 2.5rem;
    background-color: var(--white);
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.highlight-card:hover {
    background-color: #f0f4ff;
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: var(--primary-color);
}

.highlight-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: block;
}

.highlight-card h3 {
    margin-bottom: 0.5rem;
}

.highlight-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* Services Section */
.services-overview {
    padding: 4rem 0;
    background-color: var(--gray-100);
}

.services-overview h2 {
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-intro {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-item {
    background-color: var(--white);
    padding: 3rem 2rem;
    border-radius: 12px;
    border-left: 5px solid var(--primary-color);
    border: 1px solid var(--gray-200);
    border-left: 5px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.service-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    background-color: #f0f4ff;
}

.service-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    opacity: 0.15;
    margin-bottom: 1rem;
}

.service-item h3 {
    margin-bottom: 1rem;
    color: var(--gray-900);
    font-size: 1.5rem;
}

/* Centers Section */
.centers {
    padding: 4rem 0;
    background-color: var(--white);
}

.centers h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.centers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.center-card {
    background: var(--white);
    padding: 3rem 2.5rem;
    border-radius: 12px;
    border-top: 4px solid var(--primary-color);
    border: 1px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.center-card:hover {
    background: #f0f4ff;
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.center-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.35rem;
}

/* Monetization Section */
.monetization {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #f0f4ff 100%);
}

.monetization h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.monetization-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.monetization-item {
    background-color: var(--white);
    padding: 2.5rem 1.5rem;
    border-radius: 8px;
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.monetization-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    border-color: var(--primary-color);
}

.monetization-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: block;
}

.monetization-item h4 {
    font-size: 0.95rem;
    color: var(--gray-900);
    margin: 0;
}

/* Metrics Section */
.metrics-section {
    padding: 4rem 0;
    background-color: var(--gray-100);
}

.metrics-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.metrics-chart {
    width: 100%;
    max-width: 100%;
    height: auto;
    margin-bottom: 2rem;
    background-color: var(--white);
    border-radius: 12px;
    padding: 1rem;
    box-shadow: var(--shadow-md);
}

.metrics-legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    flex-shrink: 0;
}

.legend-item span:last-child {
    color: var(--gray-700);
    font-size: 0.95rem;
}

/* Comparison Section */
.comparison-section {
    padding: 4rem 0;
    background-color: var(--white);
}

.comparison-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.comparison-table-wrapper {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 12px;
    overflow-x: auto;
}

.comparison-chart {
    width: 100%;
    height: auto;
    min-height: 400px;
}

/* CTA Section Styles */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: var(--white);
    border-top: 6px solid var(--accent-green);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.05);
    pointer-events: none;
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.25rem;
    margin-bottom: 3rem;
    letter-spacing: 0.5px;
}

.cta-section .btn-primary {
    background-color: var(--white);
    color: var(--primary-color);
    font-weight: 700;
}

.cta-section .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   SERVICE DETAIL PAGE
   ============================================= */

.service-detail {
    padding: 4rem 0;
    background-color: var(--white);
}

.service-detail-alt {
    background-color: var(--gray-100);
}

.service-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.service-detail-reversed {
    grid-template-columns: 1fr 1fr;
}

.service-detail-reversed {
    direction: rtl;
}

.service-detail-reversed > * {
    direction: ltr;
}

.service-visual {
    display: flex;
    justify-content: center;
}

.service-illustration {
    width: 100%;
    max-width: 250px;
    height: auto;
}

.service-text h2 {
    margin-top: 0;
    margin-bottom: 1rem;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.feature {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: block;
}

.feature span {
    color: var(--gray-700);
    flex: 1;
}

@media (max-width: 768px) {
    .service-detail-content,
    .service-detail-reversed {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .service-detail-reversed > * {
        direction: ltr;
    }
}

/* ============================================
   TEAM PAGE STYLES
   ============================================= */

.team-overview {
    padding: 3rem 0;
    background-color: var(--gray-100);
}

.overview-text {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-700);
    max-width: 800px;
    margin: 0 auto;
}

.centers-detailed {
    padding: 4rem 0;
}

.center-detail {
    margin-bottom: 4rem;
    padding: 2rem;
    background-color: var(--gray-100);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.center-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.center-icon svg {
    width: 100%;
    height: 100%;
}

.center-detail h2 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.center-detail p {
    text-align: center;
    color: var(--gray-700);
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

.center-specialties {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.specialty-tag {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.expertise-areas {
    padding: 4rem 0;
    background-color: var(--white);
}

.expertise-areas h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.expertise-item {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.expertise-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.expertise-item:hover .expertise-number {
    color: var(--white);
}

.competencies {
    padding: 4rem 0;
    background-color: var(--gray-100);
}

.competencies h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.competencies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.competency-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border-top: 3px solid transparent;
}

.competency-card:hover {
    border-top-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.competency-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: block;
}

.competency-card h3 {
    margin-bottom: 0.5rem;
}

.competency-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* ============================================
   CONTACT PAGE STYLES
   ============================================= */

.contact-section {
    padding: 4rem 0;
    background-color: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.contact-form-wrapper h2,
.contact-info-wrapper h2 {
    margin-top: 0;
    margin-bottom: 2rem;
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.75rem;
    font-weight: 700;
    color: var(--gray-900);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-smooth);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color), 0 0 0 3px rgba(0, 60, 153, 0.1);
    background-color: #f0f4ff;
}

.form-group.checkbox {
    flex-direction: row;
    align-items: center;
}

.form-group.checkbox input {
    width: 20px;
    height: 20px;
    margin-right: 0.75rem;
    cursor: pointer;
}

.form-group.checkbox label {
    margin-bottom: 0;
    cursor: pointer;
}

.form-message {
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    display: none;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.contact-info-wrapper {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 12px;
}

.contact-info-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-info-item:last-of-type {
    margin-bottom: 0;
}

.info-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.info-icon svg {
    width: 100%;
    height: 100%;
}

.info-content h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

.info-content p {
    margin-bottom: 0;
    color: var(--gray-700);
}

.info-content a {
    color: var(--primary-color);
}

.response-time {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-300);
    background-color: var(--white);
    padding: 1rem;
    border-radius: 6px;
}

.response-time p {
    margin-bottom: 0;
    color: var(--gray-700);
}

@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background-color: var(--gray-100);
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.faq-item {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background-color: var(--gray-100);
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--gray-900);
    transition: all 0.3s ease;
}

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

.faq-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
    fill: currentColor;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 1.5rem;
    background-color: var(--white);
    display: none;
    border-top: 1px solid var(--gray-200);
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    margin-bottom: 0;
}

/* ============================================
   POLICY PAGES
   ============================================= */

.policy-section {
    padding: 3rem 0;
    background-color: var(--white);
    min-height: 70vh;
}

.policy-container {
    max-width: 900px;
}

.policy-container h1 {
    margin-bottom: 0.5rem;
}

.last-updated {
    color: var(--gray-600);
    font-style: italic;
    margin-bottom: 2rem;
}

.policy-content h2 {
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 0.5rem;
}

.policy-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.policy-content ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.policy-content li {
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

/* ============================================
   MONETIZATION STRATEGIES
   ============================================= */

.monetization-section {
    padding: 4rem 0;
    background-color: var(--white);
}

.monetization-section h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.monetization-strategies {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.strategy-card {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
}

.strategy-card:hover {
    background-color: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.strategy-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.strategy-icon svg {
    width: 100%;
    height: 100%;
}

.strategy-card h3 {
    margin-bottom: 0.5rem;
    color: var(--gray-900);
}

/* Technology Stack */
.technology-stack {
    padding: 4rem 0;
    background-color: var(--gray-100);
}

.technology-stack h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.tech-category {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.tech-category h3 {
    margin-top: 0;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.tech-category p {
    color: var(--gray-700);
    font-size: 0.95rem;
}

/* ============================================
   FOOTER
   ============================================= */

footer {
    background-color: var(--gray-900);
    color: var(--white);
    padding: 4rem 0 1.5rem;
    margin-top: 6rem;
    border-top: 3px solid var(--primary-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3.5rem;
    margin-bottom: 2.5rem;
}

.footer-section h4 {
    color: var(--white);
    margin-top: 0;
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: rgba(255, 255, 255, 0.85);
    transition: var(--transition-smooth);
    font-weight: 500;
}

.footer-section a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 2px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
}

.footer-links {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================= */

@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 1.75rem;
    }

    .monetization-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }

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

/* ============================================
   CHART AND VISUALIZATION STYLES
   ============================================= */

/* Process Flow Styles */
.process-flow {
    padding: 4rem 0;
}

.process-flow h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.section-intro {
    text-align: center;
    color: var(--gray-700);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.flow-svg {
    width: 100%;
    height: auto;
    min-height: 320px;
    margin-bottom: 2rem;
}

.matrix-svg,
.expertise-svg {
    width: 100%;
    height: auto;
    min-height: 400px;
}

.process-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background-color: #e0e0ff;
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-item h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

.feature-item p {
    color: var(--gray-700);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Capabilities Matrix */
.capabilities-matrix {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow-x: auto;
}

.matrix-diagram {
    width: 100%;
    height: auto;
    min-height: 450px;
}

/* Expertise Visualization */
.expertise-visualization {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: 3rem;
}

.expertise-chart {
    width: 100%;
    height: auto;
    max-width: 800px;
    margin: 0 auto;
    display: block;
}

/* Team Statistics */
.team-stats {
    padding: 4rem 0;
    background-color: var(--white);
}

.stats-visualization {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 12px;
}

.stats-chart {
    width: 100%;
    height: auto;
    min-height: 350px;
}

/* Responsive Chart Adjustments */
@media (max-width: 768px) {
    .process-flow,
    .capabilities-matrix,
    .expertise-visualization,
    .stats-visualization {
        padding: 1.5rem;
    }
    
    .flow-diagram,
    .matrix-diagram,
    .expertise-chart,
    .stats-chart {
        min-height: 250px;
    }
}

/* ============================================
   ANIMATIONS AND TRANSITIONS
   ============================================= */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* Print Styles */
@media print {
    header,
    footer,
    .cta-section,
    .contact-form-wrapper {
        display: none;
    }

    body {
        color: #000;
        background-color: #fff;
    }

    a {
        text-decoration: underline;
    }
}