/* Global Stylesheet for 北京中泰际标准技术服务有限公司 */

/* Import Noto Sans SC for clean Chinese typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary: #0f4c81;        /* Classical Trust Blue */
    --primary-light: #1d72b8;  /* Light Blue Accent */
    --secondary: #00a896;      /* Cyan/Teal for highlights */
    --dark: #1e293b;           /* Slate 800 */
    --dark-deep: #0f172a;      /* Slate 900 */
    --light: #f8fafc;          /* Off-white */
    --white: #ffffff;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-400: #94a3b8;
    --gray-600: #475569;
    --gray-800: #1e293b;
    --font-main: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-main);
    background-color: var(--light);
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
    position: relative;
}

.section-bg-white {
    background-color: var(--white);
}

.section-bg-dark {
    background-color: var(--dark-deep);
    color: var(--white);
}

.section-title-wrapper {
    text-align: center;
    margin-bottom: 4rem;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 0.75rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.section-subtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2rem;
    height: 2px;
    background-color: var(--secondary);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.3;
}

.section-bg-dark .section-title {
    color: var(--white);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    font-weight: 500;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

/* Header & Navigation */
.top-bar {
    background-color: var(--dark-deep);
    color: var(--gray-400);
    font-size: 0.815rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-info {
    display: flex;
    gap: 1.5rem;
}

.top-info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.top-info-item svg {
    width: 14px;
    height: 14px;
    stroke: var(--secondary);
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4.5rem;
}

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

.logo-icon {
    width: 2.25rem;
    height: 2.25rem;
    color: var(--primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: 0.05em;
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--gray-600);
    display: block;
    font-weight: 400;
    letter-spacing: 0.1em;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--gray-800);
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dark);
}

/* Hero Section */
.hero {
    min-height: calc(100vh - 6.5rem);
    background: radial-gradient(circle at top right, rgba(15, 76, 129, 0.15), transparent 60%),
                radial-gradient(circle at bottom left, rgba(0, 168, 150, 0.1), transparent 50%),
                var(--white);
    display: flex;
    align-items: center;
    position: relative;
    padding: 4rem 0 6rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem; /* Prevent overlap with quick-stats */
}

.hero-content {
    z-index: 10;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: rgba(15, 76, 129, 0.08);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(15, 76, 129, 0.1);
}

.hero-badge svg {
    width: 16px;
    height: 16px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--dark-deep);
    line-height: 1.25;
    margin-bottom: 1.5rem;
}

.hero-title span {
    color: var(--primary);
    background: linear-gradient(120deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    max-width: 90%;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    position: relative;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Beautiful dynamic SVG background logic for hero */
.hero-shapes {
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(15, 76, 129, 0.15));
    animation: float 6s ease-in-out infinite;
}

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

/* Stats Quick View Bar */
.quick-stats {
    background-color: var(--white);
    box-shadow: var(--shadow-xl);
    border-radius: 8px;
    margin-top: -4rem;
    position: relative;
    z-index: 20;
    padding: 2.5rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    border: 1px solid var(--gray-100);
}

.stat-item {
    text-align: center;
    border-right: 1px solid var(--gray-200);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.stat-number span {
    color: var(--secondary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* About Us Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-visual {
    position: relative;
}

.about-img-box {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 8px solid var(--white);
    background-color: var(--gray-200);
}

.about-experience-card {
    position: absolute;
    bottom: -2rem;
    right: -2rem;
    background-color: var(--primary);
    color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-xl);
    max-width: 260px;
    border-left: 5px solid var(--secondary);
}

.exp-num {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.exp-label {
    font-size: 0.875rem;
    color: var(--gray-200);
    line-height: 1.4;
}

.about-text h3 {
    font-size: 1.75rem;
    color: var(--dark-deep);
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.about-text p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.about-list {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.about-list-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--dark);
    font-weight: 500;
}

.about-list-item svg {
    width: 20px;
    height: 20px;
    color: var(--secondary);
    flex-shrink: 0;
}

/* Core Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.service-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-100);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(15, 76, 129, 0.2);
}

.service-icon {
    width: 3.5rem;
    height: 3.5rem;
    background-color: rgba(15, 76, 129, 0.06);
    color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.75rem;
    transition: var(--transition);
}

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

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1rem;
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-bullets {
    border-top: 1px solid var(--gray-100);
    padding-top: 1rem;
}

.service-bullet {
    font-size: 0.8125rem;
    color: var(--gray-600);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.service-bullet::before {
    content: '';
    display: block;
    width: 4px;
    height: 4px;
    background-color: var(--secondary);
    border-radius: 50%;
}

/* Core Advantages Section */
.adv-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
    align-items: center;
}

.adv-left h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.adv-left p {
    color: var(--gray-400);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.adv-list-wrapper {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.adv-item {
    display: flex;
    gap: 1.5rem;
    background-color: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.adv-item:hover {
    background-color: rgba(255, 255, 255, 0.06);
    transform: translateX(5px);
}

.adv-icon-box {
    width: 3rem;
    height: 3rem;
    background-color: rgba(0, 168, 150, 0.15);
    color: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.adv-icon-box svg {
    width: 20px;
    height: 20px;
}

.adv-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--white);
}

.adv-desc {
    font-size: 0.9375rem;
    color: var(--gray-400);
    line-height: 1.5;
}

/* Cases Section - Dynamic Tabs Layout */
.tabs-container {
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.tabs-nav {
    display: flex;
    background-color: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
}

.tab-btn {
    flex: 1;
    padding: 1.5rem 1rem;
    background: none;
    border: none;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    color: var(--primary);
    background-color: rgba(15, 76, 129, 0.02);
}

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

.tabs-content {
    padding: 3rem;
}

.tab-pane {
    display: none;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pane-intro {
    font-size: 1.05rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.pane-badge {
    background-color: rgba(0, 168, 150, 0.1);
    color: var(--secondary);
    font-size: 0.8125rem;
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    font-weight: 600;
}

.case-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.case-card {
    background-color: var(--gray-100);
    border-radius: 6px;
    padding: 1.5rem;
    border: 1px solid var(--gray-200);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition: var(--transition);
}

.case-card:hover {
    border-color: var(--primary);
    background-color: var(--white);
    box-shadow: var(--shadow-md);
}

.case-card-num {
    background-color: var(--primary);
    color: var(--white);
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 3px;
    font-family: monospace;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.case-card-content h4 {
    font-size: 1.05rem;
    color: var(--dark-deep);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.case-card-content p {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.case-single-highlight {
    background: linear-gradient(135deg, rgba(15, 76, 129, 0.02) 0%, rgba(0, 168, 150, 0.02) 100%);
    border: 1px solid var(--gray-200);
    padding: 2.5rem;
    border-radius: 8px;
    text-align: center;
}

.highlight-title {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.highlight-meta {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.meta-box {
    text-align: left;
}

.meta-label {
    font-size: 0.8125rem;
    color: var(--gray-600);
    text-transform: uppercase;
}

.meta-val {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
}

/* Partners & Support Section */
.partners-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 5rem;
    align-items: center;
}

.partners-text h3 {
    font-size: 1.75rem;
    color: var(--dark-deep);
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.partners-text p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.partner-logo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.partner-logo-card {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100px;
}

.partner-logo-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.partner-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-800);
}

.partner-type {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 0.25rem;
}

/* Contact Section & Form */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 5rem;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-info-card {
    display: flex;
    gap: 1.25rem;
}

.contact-icon-wrapper {
    width: 3rem;
    height: 3rem;
    background-color: rgba(15, 76, 129, 0.08);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon-wrapper svg {
    width: 20px;
    height: 20px;
}

.contact-info-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-deep);
    margin-bottom: 0.25rem;
}

.contact-info-val {
    font-size: 0.9375rem;
    color: var(--gray-600);
}

.contact-form {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow-xl);
    padding: 3rem;
    border: 1px solid var(--gray-200);
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    background-color: var(--light);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--white);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
}

/* Footer styling */
.footer {
    background-color: var(--dark-deep);
    color: var(--gray-400);
    padding: 5rem 0 2rem;
    font-size: 0.9rem;
    border-top: 4px solid var(--primary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-about-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.footer-about-logo .logo-icon {
    color: var(--white);
}

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

.footer-about-logo .logo-sub {
    color: var(--gray-400);
}

.footer-about-desc {
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.footer-col-title {
    color: var(--white);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-col-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 1.5rem;
    height: 2px;
    background-color: var(--secondary);
}

.footer-links-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link:hover {
    color: var(--white);
    transform: translateX(3px);
}

.footer-contact-item {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-contact-item svg {
    width: 16px;
    height: 16px;
    color: var(--secondary);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.copyright {
    font-size: 0.8125rem;
}

.icp {
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icp:hover {
    color: var(--white);
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Media Queries for Responsiveness */
@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .hero {
        height: auto;
        padding: 6rem 0 8rem;
    }
    
    .hero-badge {
        justify-content: center;
    }
    
    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .quick-stats {
        grid-template-columns: repeat(2, 1fr);
        margin-top: -2rem;
    }
    
    .stat-item:nth-child(2) {
        border-right: none;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .about-visual {
        order: 2;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .adv-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .partners-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-list {
        position: fixed;
        top: 4.5rem;
        left: -100%;
        width: 100%;
        height: calc(100vh - 4.5rem);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        padding-top: 3rem;
        gap: 2.5rem;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
        z-index: 99;
    }
    
    .nav-list.active {
        left: 0;
    }
    
    .top-bar {
        display: none;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--gray-200);
        padding-bottom: 1rem;
    }
    
    .stat-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .tabs-content {
        padding: 1.5rem;
    }
    
    .tab-btn {
        font-size: 0.9rem;
        padding: 1rem 0.5rem;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .contact-form {
        padding: 2rem 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}