/* ==========================================================================
   ONTOH Website - CSS Styles
   Brand Color: #1b2e6a (Navy Blue)
   ========================================================================== */

/* ==========================================================================
   Base Styles & CSS Variables
   ========================================================================== */

:root {
    /* Brand Colors */
    --primary-color: #1b2e6a;
    --primary-dark: #0f1a3d;
    --primary-light: #2a4a9f;
    
    /* Accent Colors */
    --accent-vision: #4a90e2;
    --accent-health: #e74c3c;
    --accent-success: #27ae60;
    --accent-warning: #f39c12;
    
    /* Neutral Colors */
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #7a7a7a;
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #0a0a0a;
    --border-color: #e0e0e0;
    
    /* Typography */
    --font-primary: 'Noto Sans KR', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-padding: 0 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ==========================================================================
   Container
   ========================================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-size: 24px;
    font-weight: 900;
    color: var(--primary-color);
    letter-spacing: 1px;
}

.logo-subtitle {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-medium);
}

.nav-menu {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dark);
    position: relative;
    padding: 8px 0;
}

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

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

.nav-link.contact-btn {
    padding: 10px 24px;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: 6px;
}

.nav-link.contact-btn::after {
    display: none;
}

.nav-link.contact-btn:hover {
    background: var(--primary-dark);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
}

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

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    padding-top: 80px;
}

.hero-content {
    max-width: 700px;
    text-align: center;
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 8px 20px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-medium);
    margin-bottom: 30px;
}

.hero-badge .divider {
    color: var(--border-color);
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.2;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.hero-title .highlight {
    color: var(--primary-color);
    position: relative;
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-medium);
    margin-bottom: 15px;
}

.hero-subtitle .vision {
    color: var(--accent-vision);
    font-weight: 700;
}

.hero-subtitle .health {
    color: var(--accent-health);
    font-weight: 700;
}

.hero-description {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.hero-visual {
    position: absolute;
    right: 10%;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.floating-card {
    background: var(--bg-white);
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 15px;
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    font-size: 28px;
    color: var(--primary-color);
}

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

.floating-card.card-2 {
    animation-delay: 0.5s;
    margin-left: 30px;
}

.floating-card.card-3 {
    animation-delay: 1s;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: var(--text-light);
    animation: scrollAnimation 2s ease-in-out infinite;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition-normal);
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(27, 46, 106, 0.3);
}

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

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

.btn-large {
    padding: 18px 40px;
    font-size: 18px;
}

/* ==========================================================================
   Section Styles
   ========================================================================== */

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 42px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.section-description {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   Solutions Section
   ========================================================================== */

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

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

.solution-card {
    background: var(--bg-light);
    padding: 50px;
    border-radius: 20px;
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.solution-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
}

.solution-icon i {
    font-size: 36px;
    color: var(--bg-white);
}

.solution-title {
    font-size: 32px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.solution-subtitle {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-medium);
    margin-bottom: 20px;
}

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

.solution-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-color);
}

.solution-link:hover {
    gap: 15px;
}

/* ==========================================================================
   Product Sections (Vision & Health)
   ========================================================================== */

.product-section {
    padding: var(--section-padding);
}

.vision-section {
    background: var(--bg-light);
}

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

.product-header {
    text-align: center;
    margin-bottom: 60px;
}

.product-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary-color);
    color: var(--bg-white);
    font-size: 14px;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 20px;
}

.product-title {
    font-size: 48px;
    font-weight: 900;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 15px;
}

.product-subtitle {
    font-size: 18px;
    color: var(--text-light);
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature-card {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

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

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.feature-description {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

/* Regulation Box */
.regulation-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 50px;
    border-radius: 20px;
    display: flex;
    align-items: flex-start;
    gap: 30px;
    color: var(--bg-white);
}

.regulation-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.regulation-icon i {
    font-size: 28px;
}

.regulation-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
}

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

.regulation-text strong {
    font-weight: 700;
}

.regulation-note {
    font-size: 14px;
    opacity: 0.9;
}

/* Health Process */
.health-process {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin-bottom: 80px;
}

.process-step {
    flex: 1;
    max-width: 280px;
    text-align: center;
}

.step-number {
    font-size: 48px;
    font-weight: 900;
    color: var(--primary-color);
    opacity: 0.2;
    margin-bottom: 20px;
}

.step-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.step-icon i {
    font-size: 32px;
    color: var(--bg-white);
}

.step-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.step-description {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.7;
}

.process-arrow {
    font-size: 24px;
    color: var(--primary-color);
}

/* Health Features */
.health-features {
    margin-top: 60px;
}

.features-subtitle {
    font-size: 32px;
    font-weight: 900;
    color: var(--text-dark);
    text-align: center;
    margin-bottom: 40px;
}

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

.health-feature-card {
    background: var(--bg-light);
    padding: 40px;
    border-radius: 16px;
}

.health-feature-card i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.health-feature-card h4 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.health-feature-card ul {
    list-style: none;
}

.health-feature-card ul li {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    padding-left: 24px;
    position: relative;
    margin-bottom: 12px;
}

.health-feature-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* ==========================================================================
   Why Section (Problem)
   ========================================================================== */

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

.why-section .section-title,
.why-section .section-description {
    color: var(--bg-white);
}

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

.problem-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.problem-card.full-width {
    grid-column: 1 / -1;
    background: rgba(255, 255, 255, 0.08);
}

.problem-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.problem-icon.danger {
    background: rgba(231, 76, 60, 0.2);
}

.problem-icon.warning {
    background: rgba(243, 156, 18, 0.2);
}

.problem-icon i {
    font-size: 28px;
}

.problem-icon.danger i {
    color: #e74c3c;
}

.problem-icon.warning i {
    color: #f39c12;
}

.problem-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 20px;
}

.problem-stat {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 20px;
}

.stat-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--bg-white);
}

.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.problem-description {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

.problem-penalties {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.penalty-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    flex: 1;
}

.penalty-item i {
    font-size: 28px;
    color: #f39c12;
}

.penalty-item span {
    font-size: 14px;
    font-weight: 600;
    color: var(--bg-white);
}

.pain-points {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
}

.pain-point {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
    border-left: 3px solid #e74c3c;
}

.pain-icon {
    width: 40px;
    height: 40px;
    background: rgba(231, 76, 60, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.pain-icon i {
    font-size: 20px;
    color: #e74c3c;
}

.pain-content h4 {
    font-size: 18px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 10px;
}

.pain-content p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

/* ==========================================================================
   Credibility Section
   ========================================================================== */

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

.credibility-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.stat-card {
    text-align: center;
    padding: 40px;
    background: var(--bg-light);
    border-radius: 16px;
}

.stat-card .stat-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.stat-card .stat-icon i {
    font-size: 32px;
    color: var(--bg-white);
}

.stat-card .stat-number {
    font-size: 42px;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 10px;
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.stat-card .stat-description {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

.tech-highlights {
    text-align: center;
}

.highlights-title {
    font-size: 32px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 40px;
}

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

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 30px 20px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: var(--transition-normal);
}

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

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

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

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-section {
    padding: var(--section-padding);
    background: var(--bg-light);
}

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

.contact-title {
    font-size: 42px;
    font-weight: 900;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.contact-description {
    font-size: 16px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

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

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 20px;
    color: var(--bg-white);
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-medium);
    margin-bottom: 5px;
}

.contact-text p,
.contact-text a {
    font-size: 16px;
    color: var(--text-dark);
    line-height: 1.6;
}

.contact-text a:hover {
    color: var(--primary-color);
}

.cta-box {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 60px;
    border-radius: 20px;
    text-align: center;
    color: var(--bg-white);
}

.cta-box h3 {
    font-size: 32px;
    font-weight: 900;
    margin-bottom: 15px;
}

.cta-box p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background: var(--bg-dark);
    color: var(--bg-white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo .logo-text {
    font-size: 28px;
    font-weight: 900;
    color: var(--bg-white);
}

.footer-logo .logo-subtitle {
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.6);
}

.footer-tagline {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 20px;
}

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

.footer-column ul li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--bg-white);
}

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

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

/* ==========================================================================
   Scroll to Top Button
   ========================================================================== */

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

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

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

/* ==========================================================================
   Animations
   ========================================================================== */

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

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

@keyframes scrollAnimation {
    0% {
        height: 0;
    }
    50% {
        height: 40px;
    }
    100% {
        height: 0;
    }
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-visual {
        display: none;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .health-features-grid {
        grid-template-columns: 1fr;
    }
    
    .credibility-stats {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-white);
        flex-direction: column;
        gap: 0;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-link.contact-btn {
        margin-top: 10px;
        border: none;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .product-title {
        font-size: 32px;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .health-process {
        flex-direction: column;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .product-title {
        font-size: 26px;
    }
    
    .solution-card,
    .feature-card,
    .health-feature-card {
        padding: 30px;
    }
    
    .cta-box {
        padding: 40px 30px;
    }
}