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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background-color: #ffffff;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Header - Minimal Navigation */
header {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(15, 23, 42, 0.95);
}

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

.logo-link {
    text-decoration: none;
    color: inherit;
}

/* Navigation */
.main-nav {
    display: flex;
    gap: 32px;
}

.main-nav a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
    padding: 8px 0;
}

.main-nav a:hover {
    color: #ffffff;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    transition: all 0.3s ease;
}

/* Mobile menu active state */
@media (max-width: 1024px) {
    .main-nav.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        padding: 24px;
        gap: 16px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-nav.active a {
        padding: 12px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-nav.active a:last-child {
        border-bottom: none;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-logo {
    height: 5rem;
    width: auto;
    vertical-align: middle;
}

.tagline {
    display: none;
}

/* Hero Section - Optimized Above the Fold */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(196, 30, 58, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: 40px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-image img {
    width: auto;
    height: auto;
    max-height: 500px;
    max-width: 100%;
    display: block;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-text {
    color: white;
}

.hero-badge {
    display: inline-block;
    background: rgba(196, 30, 58, 0.2);
    border: 1px solid rgba(196, 30, 58, 0.5);
    color: #fca5a5;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-text h2 {
    font-size: 3.25rem;
    margin-bottom: 16px;
    color: #ffffff;
    line-height: 1.1;
    font-weight: 900;
}

.hero-text h2 span {
    background: linear-gradient(135deg, #c41e3a 0%, #f56565 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: 20px;
    line-height: 1.6;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 28px;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9375rem;
    color: #e2e8f0;
}

.hero-feature-item::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: rgba(72, 187, 120, 0.2);
    border: 1px solid rgba(72, 187, 120, 0.5);
    border-radius: 50%;
    color: #48bb78;
    font-weight: bold;
    flex-shrink: 0;
    font-size: 0.75rem;
}

/* Buttons */
.cta-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 18px 40px;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    font-size: 1.125rem;
    letter-spacing: 0.01em;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #c41e3a 0%, #a01629 100%);
    color: white;
    box-shadow: 0 8px 24px rgba(196, 30, 58, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 32px rgba(196, 30, 58, 0.5);
}

.btn-primary:active {
    transform: translateY(-1px) scale(1);
}

.btn-secondary {
    background-color: transparent;
    color: #ffffff;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

.btn-secondary:active {
    transform: translateY(-1px);
}

.btn-large {
    padding: 24px 56px;
    font-size: 1.25rem;
}

.price-tag {
    display: inline-block;
    background: rgba(72, 187, 120, 0.2);
    border: 1px solid rgba(72, 187, 120, 0.5);
    color: #48bb78;
    padding: 6px 16px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 700;
}

/* Features Section */
.features {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.features h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 80px;
    color: #0f172a;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature {
    background: white;
    padding: 48px 36px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
    border-color: #cbd5e1;
}

.feature h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: #c41e3a;
}

.feature p {
    color: #64748b;
    line-height: 1.7;
    font-size: 1.0625rem;
}

/* Story Section */
.story {
    padding: 120px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
}

.story h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 60px;
    color: white;
}

.story-content {
    max-width: 800px;
    margin: 0 auto;
}

.story-text p {
    font-size: 1.125rem;
    line-height: 1.9;
    margin-bottom: 24px;
    color: rgba(255, 255, 255, 0.9);
}

.story-lead {
    font-size: 1.5rem !important;
    font-weight: 600;
    color: white !important;
    margin-bottom: 32px !important;
}

/* Setup Guide Section */
.setup-guide {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.setup-guide h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 16px;
    color: #0f172a;
}

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 60px;
}

.setup-steps {
    max-width: 800px;
    margin: 0 auto 60px;
}

.setup-step {
    display: flex;
    gap: 24px;
    margin-bottom: 32px;
    padding: 32px;
    background: white;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    transition: all 0.3s ease;
}

.setup-step:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
    border-color: #cbd5e1;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #c41e3a 0%, #a01629 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.step-content h3 {
    font-size: 1.375rem;
    color: #0f172a;
    margin-bottom: 12px;
}

.step-content p {
    color: #64748b;
    line-height: 1.7;
    margin-bottom: 16px;
}

.step-content p:last-child {
    margin-bottom: 0;
}

.step-content code {
    background: #f1f5f9;
    padding: 4px 10px;
    border-radius: 6px;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9375rem;
    color: #c41e3a;
}

.step-tip {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.9375rem;
    color: #92400e;
}

.step-credentials {
    background: #f8fafc;
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
}

.credential {
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
}

.credential:last-child {
    margin-bottom: 0;
}

.credential .label {
    font-weight: 600;
    color: #475569;
    min-width: 80px;
}

.credential .value {
    font-family: 'SF Mono', Monaco, monospace;
    color: #0f172a;
    background: white;
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid #e2e8f0;
}

.step-url {
    background: #0f172a;
    border-radius: 8px;
    padding: 16px 24px;
    margin: 16px 0;
    text-align: center;
}

.step-url code {
    background: none;
    color: #48bb78;
    font-size: 1.125rem;
}

.schedule-example {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
}

.schedule-example h4 {
    font-size: 0.9375rem;
    color: #166534;
    margin-bottom: 12px;
}

.schedule-example ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.schedule-example li {
    color: #15803d;
    font-size: 0.9375rem;
    padding: 4px 0;
    padding-left: 20px;
    position: relative;
}

.schedule-example li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #22c55e;
}

/* LED Status Guide */
.led-status-guide {
    max-width: 800px;
    margin: 0 auto 60px;
    background: white;
    border-radius: 16px;
    padding: 40px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
}

.led-status-guide h3 {
    font-size: 1.5rem;
    color: #0f172a;
    margin-bottom: 32px;
    text-align: center;
}

.led-indicators {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.led-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.led-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.led-icon.blue {
    background: #3b82f6;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
}

.led-icon.red {
    background: #ef4444;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.5);
}

.led-icon.both {
    background: linear-gradient(135deg, #3b82f6 0%, #ef4444 100%);
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.5);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.led-info h4 {
    font-size: 1rem;
    color: #0f172a;
    margin-bottom: 4px;
}

.led-info p {
    font-size: 0.875rem;
    color: #64748b;
}

/* Optional WiFi Setup */
.optional-wifi-setup {
    max-width: 800px;
    margin: 0 auto;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    border-radius: 16px;
    padding: 40px;
    color: white;
}

.optional-wifi-setup h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.optional-wifi-setup > p {
    color: #cbd5e1;
    margin-bottom: 24px;
}

.optional-wifi-setup ol {
    margin-left: 20px;
    margin-bottom: 24px;
}

.optional-wifi-setup li {
    color: #e2e8f0;
    padding: 8px 0;
    line-height: 1.6;
}

.optional-wifi-setup code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    color: #48bb78;
}

.optional-wifi-setup .step-tip {
    background: rgba(251, 191, 36, 0.1);
    border-color: rgba(251, 191, 36, 0.3);
    color: #fcd34d;
}

/* FAQ Section */
.faq {
    padding: 120px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.faq h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 60px;
    color: #0f172a;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.faq-item {
    background: white;
    padding: 32px;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    transition: all 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
    border-color: #cbd5e1;
}

.faq-item h3 {
    font-size: 1.125rem;
    color: #0f172a;
    margin-bottom: 12px;
}

.faq-item p {
    color: #64748b;
    line-height: 1.7;
    font-size: 0.9375rem;
}

.faq-item code {
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.875rem;
    color: #c41e3a;
}

/* Troubleshooting */
.troubleshooting {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border-radius: 16px;
    padding: 48px;
}

.troubleshooting h3 {
    font-size: 1.75rem;
    color: #92400e;
    margin-bottom: 32px;
    text-align: center;
}

.troubleshooting-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.trouble-item {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(146, 64, 14, 0.1);
}

.trouble-item h4 {
    font-size: 1rem;
    color: #92400e;
    margin-bottom: 8px;
}

.trouble-item p {
    color: #78350f;
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Specifications Section */
.specifications {
    padding: 120px 0;
    background: white;
}

.specifications h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 80px;
    color: #0f172a;
}

.specs-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.specs-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.specs-list ul {
    list-style: none;
}

.specs-list li {
    padding: 20px 0;
    border-bottom: 1px solid #e2e8f0;
    font-size: 1.125rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.specs-list li:last-child {
    border-bottom: none;
}

.specs-list strong {
    color: #0f172a;
    font-weight: 600;
    min-width: 140px;
}

.specs-list li span {
    color: #64748b;
}

/* Video Demo Section */
.video-demo {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.video-demo h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 80px;
    color: #0f172a;
}

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

.video-wrapper {
    display: flex;
    justify-content: center;
}

.video-container {
    position: relative;
    width: 400px;
    height: 710px;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    border: 1px solid #e2e8f0;
    background: #000;
}

.video-container iframe {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(2.5);
    width: 560px;
    height: 315px;
    border: none;
}

.video-features h3 {
    font-size: 2rem;
    margin-bottom: 32px;
    color: #0f172a;
    font-weight: 700;
}

.video-feature-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.video-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: white;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.video-feature:hover {
    transform: translateX(8px);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.1);
    border-color: #cbd5e1;
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #c41e3a 0%, #a01629 100%);
    border-radius: 12px;
}

.feature-text h4 {
    font-size: 1.125rem;
    margin-bottom: 4px;
    color: #0f172a;
    font-weight: 600;
}

.feature-text p {
    font-size: 0.9375rem;
    color: #64748b;
    line-height: 1.6;
}

/* Gallery Section */
.gallery {
    padding: 120px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
}

.gallery h2 {
    text-align: center;
    font-size: 3rem;
    margin-bottom: 80px;
    color: #0f172a;
}

.gallery-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
}

.gallery-item {
    position: relative;
    border-radius: 16px;
    background: white;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.04);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.12);
    border-color: #cbd5e1;
}

.gallery-item:first-child img {
    max-width: 600px;
}

.gallery-item img {
    width: auto;
    height: auto;
    max-height: 400px;
    max-width: 350px;
    display: block;
    transition: transform 0.3s ease;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 50%, rgba(196, 30, 58, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

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

.contact h2 {
    font-size: 3rem;
    margin-bottom: 24px;
}

.contact-content p {
    font-size: 1.25rem;
    margin-bottom: 32px;
    color: #cbd5e1;
}

.contact-info {
    margin: 48px 0;
}

.contact-info a {
    color: #fca5a5;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.25rem;
    transition: color 0.2s ease;
}

.contact-info a:hover {
    color: #fecaca;
}

.buy-section {
    margin-top: 48px;
}

/* Footer */
footer {
    background-color: #020617;
    color: #64748b;
    text-align: center;
    padding: 40px 0;
    font-size: 0.9375rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
        text-align: center;
    }

    .hero-text h2 {
        font-size: 3rem;
    }

    .hero-features {
        grid-template-columns: 1fr;
    }

    .gallery-item img {
        max-height: 350px;
        max-width: 300px;
    }

    .gallery-item:first-child img {
        max-width: 500px;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }

    .troubleshooting-grid {
        grid-template-columns: 1fr;
    }

    .led-indicators {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.25rem;
    }

    .hero {
        min-height: auto;
        padding: 80px 0 60px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-text h2 {
        font-size: 2.5rem;
    }

    .hero-text p {
        font-size: 1.125rem;
    }

    .hero-features {
        grid-template-columns: 1fr;
    }

    .specs-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .features,
    .specifications,
    .gallery,
    .video-demo,
    .contact,
    .setup-guide,
    .faq {
        padding: 80px 0;
    }

    .features h2,
    .specifications h2,
    .gallery h2,
    .video-demo h2,
    .contact h2,
    .setup-guide h2,
    .faq h2 {
        font-size: 2.25rem;
        margin-bottom: 48px;
    }

    .setup-step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .step-credentials {
        text-align: left;
    }

    .optional-wifi-setup {
        padding: 32px 24px;
    }

    .led-status-guide {
        padding: 32px 24px;
    }

    .troubleshooting {
        padding: 32px 24px;
    }

    .video-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .video-container {
        width: 350px;
        height: 620px;
    }

    .video-container iframe {
        transform: translate(-50%, -50%) scale(2.3);
    }

    .video-features h3 {
        font-size: 1.75rem;
    }

    .gallery-item img {
        max-height: 320px;
        max-width: 280px;
    }

    .gallery-item:first-child img {
        max-width: 400px;
    }

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

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.125rem;
    }

    .hero {
        padding: 70px 0 40px;
    }

    .hero-text h2 {
        font-size: 2rem;
    }

    .hero-text p {
        font-size: 1rem;
    }

    .btn {
        padding: 14px 28px;
        font-size: 1rem;
    }

    .features,
    .specifications,
    .gallery,
    .video-demo,
    .contact,
    .setup-guide,
    .faq {
        padding: 60px 0;
    }

    .features h2,
    .specifications h2,
    .gallery h2,
    .video-demo h2,
    .contact h2,
    .setup-guide h2,
    .faq h2 {
        font-size: 1.875rem;
    }

    .setup-step {
        padding: 24px;
    }

    .step-content h3 {
        font-size: 1.125rem;
    }

    .faq-item {
        padding: 24px;
    }

    .faq-item h3 {
        font-size: 1rem;
    }

    .video-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .video-container {
        width: 300px;
        height: 530px;
    }

    .video-container iframe {
        transform: translate(-50%, -50%) scale(2);
    }

    .video-features h3 {
        font-size: 1.5rem;
    }

    .feature-text h4 {
        font-size: 1rem;
    }

    .feature-text p {
        font-size: 0.875rem;
    }

    .gallery-item img {
        max-height: 280px;
        max-width: 250px;
    }

    .gallery-item:first-child img {
        max-width: 350px;
    }

    .feature {
        padding: 32px 24px;
    }
}