/* CSS Reset */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #FFFFFF;
    --color-text: #FFFFFF;
    --color-text-light: #B3B3B3;
    --color-background: #000000;
    --color-background-alt: #1A1A1A;
    --color-border: #333333;
    --color-success: #00FF00;
    --color-error: #FF0000;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;
    --spacing-5xl: 10rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-base: 0.5rem;
    --radius-lg: 1rem;
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--spacing-sm);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.section:nth-child(even) {
    background-color: var(--color-background-alt);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section__title {
    margin-bottom: var(--spacing-md);
}

.section__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: 0;
}

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

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-base);
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav__logo-img {
    height: 100px;
    width: auto;
    /* No filter needed - keep logo as black */
}



/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(18, 18, 18, 0.7) 0%,
        rgba(18, 18, 18, 0.5) 50%,
        rgba(18, 18, 18, 0.7) 100%
    );
    z-index: 2;
}

.hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: white;
    max-width: 900px;
    padding: 0 var(--spacing-xl);
    animation: slideInFromLeft 1s ease 0.5s both;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    font-weight: 300;
    margin-bottom: var(--spacing-xl);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero__cta {
    animation: slideInFromRight 1s ease 0.8s both;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-base);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow-base);
}

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

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

.btn--full {
    width: 100%;
}

.btn--nav {
    background-color: var(--color-primary);
    color: var(--color-background);
    border: 2px solid var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.btn--nav:hover {
    background-color: transparent;
    color: var(--color-primary);
}

/* Video Section */
.video-player {
    max-width: 800px;
    margin: 0 auto;
}

.video-player__container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background-color: #000;
}

.video-player__iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-player__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(18, 18, 18, 0.6) 0%,
        rgba(18, 18, 18, 0.3) 50%,
        rgba(18, 18, 18, 0.6) 100%
    );
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    cursor: pointer;
}

.video-player__overlay:hover {
    background: linear-gradient(
        135deg,
        rgba(18, 18, 18, 0.4) 0%,
        rgba(18, 18, 18, 0.2) 50%,
        rgba(18, 18, 18, 0.4) 100%
    );
}

.video-player__overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.video-player__play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: var(--color-primary);
    border: 2px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-background);
    cursor: pointer;
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.video-player__play-btn:hover {
    background-color: transparent;
    color: var(--color-primary);
    transform: scale(1.1);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.3);
}

.video-player__play-btn svg {
    width: 32px;
    height: 32px;
    margin-left: 4px; /* Slight offset to center play icon visually */
}

.video-caption {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    font-style: italic;
}

/* Digital Vision Section */
.digital-vision {
    background: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    padding: var(--spacing-4xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.digital-vision__content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.digital-vision__header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.digital-vision__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.digital-vision__subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.5;
}

.digital-vision__stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-4xl);
}

.stat-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition-base);
}

.stat-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.stat-card__number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat-card__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.4;
}

.digital-vision__interactive {
    margin-bottom: var(--spacing-4xl);
}

.vision-scenario {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    overflow: hidden;
}

.scenario-tabs {
    display: flex;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.scenario-tab {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: transparent;
    border: none;
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.scenario-tab.active {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-primary);
}

.scenario-tab:hover {
    background: rgba(255, 255, 255, 0.03);
}

.scenario-content {
    position: relative;
    min-height: 400px;
}

.scenario-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    padding: var(--spacing-2xl);
    align-items: start;
}

.scenario-panel.active {
    display: grid;
}

.scenario-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.factory-problem, .factory-solution {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.problem-item, .solution-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-base);
}

.problem-item {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.solution-item {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.problem-item:hover {
    background: rgba(239, 68, 68, 0.15);
    transform: translateY(-2px);
}

.solution-item:hover {
    background: rgba(34, 197, 94, 0.15);
    transform: translateY(-2px);
}

.problem-item i {
    color: #ef4444;
    width: 24px;
    height: 24px;
}

.solution-item i {
    color: #22c55e;
    width: 24px;
    height: 24px;
}

.problem-item span, .solution-item span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.scenario-text {
    padding-top: var(--spacing-lg);
}

.scenario-text h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.scenario-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    line-height: 1.6;
    text-align: left;
}

.digital-vision__cta {
    text-align: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: var(--spacing-2xl);
}

.digital-vision__cta h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.digital-vision__cta p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn--large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

/* Partners Section */
.partners {
    background-color: var(--color-background);
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}

.partners__content {
    text-align: center;
}

.partners__title {
    color: var(--color-text-light);
    font-size: var(--font-size-lg);
    font-weight: 500;
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.partners__slider {
    width: 100%;
    overflow: hidden;
    mask: linear-gradient(
        to right,
        transparent 0%,
        black 10%,
        black 90%,
        transparent 100%
    );
    -webkit-mask: linear-gradient(
        to right,
        transparent 0%,
        black 10%,
        black 90%,
        transparent 100%
    );
}

.partners__track {
    display: flex;
    align-items: center;
    gap: var(--spacing-3xl);
    animation: slide 30s linear infinite;
    width: fit-content;
}

.partners__logo {
    flex-shrink: 0;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: var(--transition-base);
    filter: brightness(0) saturate(100%) invert(100%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(100%) contrast(100%);
}

.partners__logo:hover {
    opacity: 1;
    transform: scale(1.05);
}

.partners__logo img {
    height: 100%;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

@keyframes slide {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-33.333%);
    }
}

/* About-Video Section */
.about-video__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: flex-start;
}

.about-video__heading {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-2xl);
}

.about-video__paragraph {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.about-video__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-background-alt);
    border-radius: var(--radius-base);
    border: 1px solid var(--color-border);
}

.stat__number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat__label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

.about-video__player {
    position: sticky;
    top: 100px;
}

.video-caption {
    text-align: center;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-md);
    font-style: italic;
}

/* Solutions Section */
.solutions__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.solution-card {
    background-color: var(--color-background-alt);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid var(--color-border);
}

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

.solution-card__icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--color-background);
}

.solution-card__icon svg {
    width: 24px;
    height: 24px;
}

.solution-card__title {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.solution-card__description {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* Technology Integration Section */
.integration-flow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.integration-card {
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.integration-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    transform: translateX(-100%);
    transition: var(--transition-slow);
}

.integration-card:hover::before,
.integration-card--active::before {
    transform: translateX(0);
}

.integration-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.integration-card--active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.integration-card__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

.integration-card__icon svg {
    width: 24px;
    height: 24px;
}

.integration-card__title {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    margin: 0;
}

.integration-card__content p {
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.integration-card__features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.integration-card__features li {
    color: var(--color-text-light);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--color-border);
    position: relative;
    padding-left: var(--spacing-md);
}

.integration-card__features li:last-child {
    border-bottom: none;
}

.integration-card__features li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}

/* Partnership Section */
.partnership__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: flex-start;
}

.partnership__heading {
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

.partnership__text {
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.partnership__benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.benefit {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-background-alt);
    border-radius: var(--radius-base);
    border: 1px solid var(--color-border);
}

.benefit__icon {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.benefit__title {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.benefit__description {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

.partnership__form-container {
    background-color: var(--color-background-alt);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 100px;
}

.partnership__form-title {
    color: var(--color-primary);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition-fast);
    background-color: var(--color-background);
    color: var(--color-text);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-light);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-select {
    cursor: pointer;
}

.form-error {
    display: block;
    margin-top: var(--spacing-xs);
    color: var(--color-error);
    font-size: var(--font-size-sm);
}

/* Toast */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--color-success);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    transform: translateX(100%);
    opacity: 0;
    transition: var(--transition-base);
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast__content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast__icon svg {
    width: 20px;
    height: 20px;
}

/* Footer */
.footer {
    background-color: var(--color-background-alt);
    color: var(--color-text);
    text-align: center;
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
}

.footer__text {
    margin: 0;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Container */
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Section Spacing */
    .section {
        padding: var(--spacing-3xl) 0;
    }
    
    .section__header {
        margin-bottom: var(--spacing-2xl);
    }
    
    /* Navigation */
    .nav__logo-img {
        height: 80px;
    }
    
    .btn--nav {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    /* Partners */
    .partners {
        padding: var(--spacing-lg) 0;
    }
    
    .partners__title {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-md);
    }
    
    .partners__logo {
        height: 40px;
    }
    
    .partners__track {
        gap: var(--spacing-xl);
    }
    
    /* Typography */
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }
    
    .hero__title {
        font-size: var(--font-size-4xl);
    }
    
    .hero__subtitle {
        font-size: var(--font-size-lg);
    }
    
    /* Layout */
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section__header {
        margin-bottom: var(--spacing-2xl);
    }
    
    /* About-Video */
    .about-video__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .about-video__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }
    
    .about-video__player {
        position: static;
    }
    
    /* Solutions */
    .solutions__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    /* Video */
    .video-player__play-btn {
        width: 60px;
        height: 60px;
    }
    
    .video-player__play-btn svg {
        width: 24px;
        height: 24px;
    }
    
    /* Integration */
    .integration-flow {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    /* Partnership */
    .partnership__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .partnership__form-container {
        position: static;
        padding: var(--spacing-lg);
    }
    
    .partnership__benefits {
        order: 2;
        margin-top: var(--spacing-lg);
    }
    
    /* Digital Vision Responsive */
    .digital-vision__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .scenario-panel {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: left;
        padding: var(--spacing-lg);
    }
    
    .scenario-text {
        padding-top: 0;
    }
    
    .factory-problem, .factory-solution {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .scenario-tab {
        font-size: var(--font-size-base);
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .digital-vision__title {
        font-size: var(--font-size-2xl);
    }
    
    .digital-vision__subtitle {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    /* Section Spacing */
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .section__header {
        margin-bottom: var(--spacing-xl);
    }
    
    /* Hero */
    .hero__content {
        padding: 0 var(--spacing-md);
    }
    
    .hero__title {
        font-size: var(--font-size-3xl);
        margin-bottom: var(--spacing-md);
    }
    
    .hero__subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-lg);
    }
    
    /* Buttons */
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    /* Cards */
    .solution-card {
        padding: var(--spacing-lg);
    }
    
    .stat__number {
        font-size: var(--font-size-2xl);
    }
    
    .integration-card {
        padding: var(--spacing-lg);
    }
    
    /* Forms */
    .partnership__form-container {
        padding: var(--spacing-lg);
    }
    
    /* Navigation */
    .nav__logo-img {
        height: 65px;
    }
    
    /* Partners */
    .partners__logo {
        height: 30px;
    }
    
    /* Digital Vision */
    .digital-vision__title {
        font-size: var(--font-size-xl);
    }
    
    .digital-vision__subtitle {
        font-size: var(--font-size-base);
    }
    
    .stat-card__number {
        font-size: 2rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --color-primary: #0000FF;
        --color-text: #000000;
        --color-background: #FFFFFF;
    }
}

/* Focus styles for keyboard navigation */
.btn:focus,
.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}