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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    overflow-x: hidden;
    background-color: #000000;
}

/* Top Blue Line */
.top-line {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #00b4d8, #0077b6);
    z-index: 1001;
}

/* Transparent Navbar */
.navbar {
    position: fixed;
    top: 2px;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    position: relative;
}

/* Logo */
.nav-logo {
    display: flex;
    align-items: center;
    z-index: 1002;
}

.logo-img {
    height: 55px;
    width: auto;
    transition: transform 0.3s ease;
    object-fit: contain;
}

.nav-logo:hover .logo-img {
    transform: scale(1.1);
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
    display: block;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: white;
    transition: width 0.3s ease;
}

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

.nav-link:hover {
    opacity: 0.8;
}

/* Right Icons */
.nav-icons {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    z-index: 1002;
}

.icon-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.icon-btn svg {
    width: 24px;
    height: 24px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 4px;
    z-index: 1002;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 2px;
    background: white;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-section-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-image: url('hero bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    padding: 2rem;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.hero-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 70px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: white;
}

.hero-subheading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 2.5rem;
    color: white;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.btn {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 17.5px;
    font-weight: 800;
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: none;
    letter-spacing: 0.5px;
}

.btn-primary {
    background-color: #4FA304;
    color: white;
}

.btn-primary:hover {
    background-color: #3d8003;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 163, 4, 0.4);
}

.btn-secondary {
    background-color: white;
    color: black;
}

.btn-secondary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.4);
}

/* New Section */
.new-section {
    min-height: 100vh;
    background: transparent;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.new-section-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('2nd-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  
    z-index: 0;
}


.section-content {
    text-align: center;
    color: white;
    z-index: 2;
    padding: 2rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
    background: transparent;
}

.stats-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    background: transparent;
}

.stat-item {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    width: 300px;
    max-width: 100%;
}

.stat-value-wrapper {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stat-value {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 60px;
    font-weight: 700;
    color: white;
    line-height: 1;
}

.stat-unit {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 26px;
    font-weight: 700;
    color: white;
    line-height: 1;
}

.stat-label {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 20px;
    font-weight: 600;
    color: white;
    margin: 0;
    text-align: center;
}

.stat-separator {
    width: 1px;
    height: 150px;
    background-color: rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.image-container {
    margin-top: 5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-image {
    width: 600px;
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.graph-container {
    margin-top: 12rem;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 1400px;
    margin: 12rem auto 0;
    padding: 0 2rem;
}

.graph-wrapper {
    width: 100%;
    max-width: 100%;
}

.growth-graph {
    width: 100%;
    height: auto;
    min-height: 350px;
}

/* Milestones Section */
.milestones-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 3rem;
    width: 100%;
    max-width: 1400px;
    margin: 2rem auto 0;
    padding: 0 2rem;
}

.milestone-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 1.5rem;
    padding-top: 2rem;
    border-radius: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.milestone-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.milestone-item.active .milestone-title {
    color: white;
}

.milestone-line {
    display: none;
}

.milestone-content {
    width: 100%;
}

.milestone-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.milestone-description {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.6;
}

.milestone-dot {
    transition: all 0.3s ease;
    opacity: 0.5;
}

.milestone-dot.active {
    opacity: 1;
    r: 6;
}

.background-branding {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
    text-align: center;
    width: 100%;
    max-width: 1400px;
}

.brand-m {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 300px;
    font-weight: 800;
    color: rgba(150, 150, 150, 0.3);
    line-height: 1;
    margin-bottom: -50px;
}

.brand-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 60px;
    font-weight: 600;
    color: rgba(150, 150, 150, 0.3);
    letter-spacing: 8px;
}

/* Mask Section */
.mask-section {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mask-section-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-image: url('Mask group (1).png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

.mask-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.mask-section-overlay {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 50%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    z-index: 2;
}

.mask-section-content {
    text-align: left;
    color: white;
    z-index: 2;
    padding: 4rem 2rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.mask-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 40px;
    font-weight: 700;
    color: white;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.mask-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: white;
    line-height: 1.6;
    max-width: 900px;
    margin: 0;
}

/* Mask Section 3 */
.mask-section-3 {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mask-section-3-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-image: url('Mask group (3).png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

.mask-section-3::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.mask-section-3 .mask-section-overlay {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 50%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    z-index: 2;
}

.mask-section-3 .mask-section-content {
    z-index: 3;
}

/* Battery Section */
.battery-section {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.battery-section-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-image: url('2nd-bg.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    z-index: 0;
}

.battery-section-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.battery-section-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    z-index: 2;
    padding: 4rem 2rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.battery-left {
    flex: 0 0 30%;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: flex-start;
    justify-content: flex-start;
    align-self: flex-start;
    padding-left: 2rem;
    padding-top: 8rem;
}

.feature-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.feature-item.active:not(.hovered) .feature-heading,
.feature-item.hovered .feature-heading {
    color: white;
}

.feature-item:not(.hovered):not(.active) .feature-text {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin: 0;
    transition: max-height 0.4s ease, opacity 0.4s ease, margin 0.4s ease;
}

.feature-item.active:not(.hovered) .feature-text {
    max-height: 200px;
    opacity: 1;
    margin-top: 0.5rem;
    transition: max-height 0.4s ease, opacity 0.4s ease, margin 0.4s ease;
}

.battery-left.has-hovered .feature-item.active:not(.hovered) .feature-text {
    max-height: 0;
    opacity: 0;
    margin: 0;
}

.feature-item.hovered .feature-text {
    max-height: 200px;
    opacity: 1;
    margin-top: 0.5rem;
    transition: max-height 0.4s ease, opacity 0.4s ease, margin 0.4s ease;
}

.feature-item.active.hovered .feature-text {
    max-height: 200px;
    opacity: 1;
    margin-top: 0.5rem;
}

.feature-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.5);
    margin: 0;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.feature-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.6;
}

.battery-center {
    flex: 0 0 40%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.battery-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    object-fit: contain;
}

.battery-right {
    flex: 0 0 30%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    align-self: flex-start;
    padding-right: 10rem;
    padding-top: 8rem;
}

.specs-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 2rem;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.spec-value {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: white;
    line-height: 1.2;
}

.spec-green {
    color: #4FA304;
}

.spec-label {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: white;
    line-height: 1.4;
}

/* Tab Section */
.tab-section {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.tab-section-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 0;
}

.tab-section-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.tab-section-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    z-index: 2;
    padding: 4rem 2rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.tab-image-container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 350px;
}

.tab-main-image {
    position: absolute;
    width: 100%;
    max-width: 1200px;
    height: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.tab-main-image.active {
    opacity: 1;
    position: relative;
    pointer-events: auto;
}

.tab-text-blocks {
    display: flex;
    justify-content: space-between;
    gap: 3rem;
    width: 100%;
    max-width: 1200px;
    padding-top: 2rem;
}

.tab-text-block {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 1.5rem;
    padding-top: 2rem;
    border-radius: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.tab-text-block:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.tab-text-block.active .tab-block-heading {
    color: white;
}

.tab-block-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.tab-block-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.6;
}

/* Mobile App Section */
.mobile-section {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mobile-section-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 0;
}

.mobile-section-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.mobile-section-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    z-index: 2;
    padding: 4rem 2rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.mobile-image-container {
    width: 100%;
    max-width: 1200px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    min-height: 500px;
}

.mobile-main-image {
    position: absolute;
    width: 100%;
    max-width: 800px;
    height: auto;
    object-fit: contain;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.mobile-main-image.active {
    opacity: 1;
    position: relative;
    pointer-events: auto;
}

.mobile-text-blocks {
    display: flex;
    justify-content: space-between;
    gap: 3rem;
    width: 100%;
    max-width: 1200px;
    padding-top: 2rem;
}

.mobile-text-block {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 1.5rem;
    padding-top: 2rem;
    border-radius: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.mobile-text-block:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.mobile-text-block.active .mobile-block-heading {
    color: white;
}

.mobile-block-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    line-height: 1.2;
    transition: color 0.3s ease;
}

.mobile-block-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    line-height: 1.6;
}

/* Mask Section 2 */
.mask-section-2 {
    min-height: 100vh;
    background-color: #000000;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.mask-section-2-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-image: url('Mask group.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    z-index: 0;
}

.mask-section-2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.mask-section-2-overlay {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 50%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, transparent 100%);
    z-index: 2;
}

.mask-section-2-content {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 4rem;
    z-index: 3;
    padding: 4rem 2rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.mask-section-2-left {
    flex: 0 0 auto;
}

.mask-section-2-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 40px;
    font-weight: 700;
    color: white;
    line-height: 1.2;
    margin: 0;
}

.mask-section-2-right {
    flex: 1;
    max-width: 600px;
}

.mask-section-2-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: white;
    line-height: 1.6;
    margin: 0;
}

/* Mask Section 4 */
.mask-section-4 {
    background-color: #000000;
    padding: 4rem 0;
    position: relative;
}

.mask-section-4-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
}

.mask-section-4-image-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 3rem;
}

.mask-section-4-image {
    width: 100%;
    max-width: 1400px;
    height: auto;
    object-fit: contain;
    display: block;
}

.mask-section-4-content {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.mask-section-4-left {
    flex: 0 0 auto;
}

.mask-section-4-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 40px;
    font-weight: 700;
    color: white;
    line-height: 1.2;
    margin: 0;
}

.mask-section-4-right {
    flex: 1;
    max-width: 600px;
}

.mask-section-4-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: white;
    line-height: 1.6;
    margin: 0;
}

/* Powerwall Specs Section */
.specs-section {
    background-color: #000000;
    padding: 4rem 2rem;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}

.specs-container {
    max-width: 1400px;
    width: 100%;
    position: relative;
}

.specs-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.specs-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 40px;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
}

.specs-tabs {
    display: flex;
    justify-content: flex-end;
    gap: 2rem;
    flex-wrap: wrap;
}

.specs-tab {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.6);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

.specs-tab:hover {
    color: rgba(255, 255, 255, 0.8);
}

.specs-tab.active {
    color: #ffffff;
}

.specs-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #0066ff;
}

.specs-content {
    color: #ffffff;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.specs-category {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.specs-category:last-of-type {
    border-bottom: none;
    padding-bottom: 0;
}

.specs-category-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.specs-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.specs-label {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.specs-value {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: #ffffff;
    line-height: 1.5;
}

.specs-note {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
    margin-top: 0.25rem;
}

.specs-footnotes {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid rgba(255, 255, 255, 0.4);
}

.specs-footnotes p {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 12px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
    margin: 0.5rem 0;
}

/* CTA Section */
.cta-section {
    min-height: auto;
    background-color: #000000;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 4rem 0;
}

.cta-section-bg {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-image: url('2nd-bg.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    z-index: 0;
}

.cta-section-overlay {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    max-width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.cta-container {
    max-width: 1400px;
    width: 100%;
    padding: 2rem;
    position: relative;
    z-index: 2;
}

.cta-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
}

.cta-left {
    flex: 1;
    max-width: 600px;
    text-align: left;
}

.cta-right {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cta-image {
    width: 100%;
    max-width: 500px;
    height: auto;
    object-fit: contain;
}

.cta-heading {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 50px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-text {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 18px;
    font-weight: 400;
    color: #ffffff;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.cta-link {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 500;
    color: #ffffff;
    text-decoration: underline;
    display: inline-block;
    margin-bottom: 1.5rem;
    transition: opacity 0.3s ease;
}

.cta-link:hover {
    opacity: 0.8;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-btn {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    font-weight: 600;
    padding: 1rem 2rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.cta-btn-primary {
    background-color: #000000;
    color: #ffffff;
    border: 1px solid #ffffff;
}

.cta-btn-primary:hover {
    background-color: #1a1a1a;
}

.cta-btn-secondary {
    background-color: #333333;
    color: #ffffff;
    border: none;
}

.cta-btn-secondary:hover {
    background-color: #404040;
}

/* Footer Section */
.footer-section {
    background-color: #000000;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-link {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 14px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #ffffff;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-container {
        padding: 1rem 1.5rem;
    }
    
    .nav-menu {
        gap: 2rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem 0;
        gap: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1001;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-item {
        width: 100%;
        text-align: center;
        padding: 1rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .nav-link {
        font-size: 1.1rem;
        padding: 0.75rem 0;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .nav-icons {
        gap: 1rem;
    }
    
    .icon-btn {
        padding: 0.4rem;
    }
    
    .icon-btn svg {
        width: 20px;
        height: 20px;
    }
    
    .hero-heading {
        font-size: 45px;
    }
    
    .hero-subheading {
        font-size: 20px;
    }
    
    .btn {
        font-size: 16px;
        padding: 0.875rem 2rem;
    }
    
    .stats-container {
        flex-direction: column;
        gap: 2rem;
    }
    
    .stat-item {
        width: 100%;
        max-width: 400px;
        padding: 2rem 1.5rem;
    }
    
    .stat-separator {
        width: 200px;
        height: 1px;
    }
    
    .stat-value {
        font-size: 48px;
    }
    
    .stat-unit {
        font-size: 22px;
    }
    
    .stat-label {
        font-size: 18px;
    }
    
    .image-container {
        margin-top: 3rem;
    }
    
    .section-image {
        width: 100%;
        max-width: 500px;
    }
    
    .graph-container {
        margin-top: 3rem;
    }
    
    .milestones-container {
        flex-wrap: wrap;
        gap: 2rem;
        margin-top: 3rem;
    }
    
    .milestone-item {
        flex: 0 0 calc(50% - 1rem);
    }
    
    .brand-m {
        font-size: 200px;
    }
    
    .brand-text {
        font-size: 40px;
    }
    
    .mask-heading {
        font-size: 36px;
    }
    
    .mask-text {
        font-size: 15px;
    }
    
    .mask-section-content {
        padding: 3rem 1.5rem;
    }
    
    .mask-section-2-content {
        flex-direction: column;
        gap: 2rem;
        padding: 3rem 1.5rem;
    }
    
    .mask-section-2-heading {
        font-size: 36px;
    }
    
    .mask-section-2-text {
        font-size: 15px;
    }
    
    .mask-section-2-right {
        max-width: 100%;
    }
    
    .mask-section-4-container {
        padding: 0 1.5rem;
    }
    
    .mask-section-4-image-container {
        margin-bottom: 2rem;
    }
    
    .mask-section-4-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .mask-section-4-heading {
        font-size: 36px;
    }
    
    .mask-section-4-text {
        font-size: 15px;
    }
    
    .mask-section-4-right {
        max-width: 100%;
    }
    
    .specs-section {
        padding: 3rem 1.5rem;
    }
    
    .specs-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }
    
    .specs-heading {
        font-size: 36px;
    }
    
    .specs-tabs {
        justify-content: flex-start;
        gap: 1.5rem;
    }
    
    .cta-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .cta-left {
        max-width: 100%;
    }
    
    .cta-heading {
        font-size: 40px;
    }
    
    .cta-text {
        font-size: 16px;
    }
    
    .cta-image {
        max-width: 400px;
    }
    
    .footer-links {
        gap: 1.5rem;
    }
    
    .specs-items {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .specs-category-title {
        font-size: 22px;
    }
    
    .battery-section-content {
        flex-direction: column;
        gap: 3rem;
        padding: 3rem 1.5rem;
    }
    
    .battery-left,
    .battery-center,
    .battery-right {
        flex: 1;
        width: 100%;
    }
    
    .specs-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem 2rem;
    }
    
    .feature-heading {
        font-size: 28px;
    }
    
    .battery-image {
        max-width: 100%;
    }
    
    .tab-section-content {
        gap: 3rem;
        padding: 3rem 1.5rem;
    }
    
    .tab-text-blocks {
        flex-direction: column;
        gap: 2rem;
    }
    
    .tab-block-heading {
        font-size: 22px;
    }
    
    .tab-block-text {
        font-size: 15px;
    }
    
    .tab-image-container {
        min-height: 400px;
    }
    
    .mobile-section-content {
        gap: 3rem;
        padding: 3rem 1.5rem;
    }
    
    .mobile-text-blocks {
        flex-direction: column;
        gap: 2rem;
    }
    
    .mobile-block-heading {
        font-size: 22px;
    }
    
    .mobile-block-text {
        font-size: 15px;
    }
    
    .mobile-image-container {
        min-height: 400px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0.75rem;
    }
    
    .logo-img {
        height: 32px;
    }
    
    .nav-icons {
        gap: 0.75rem;
    }
    
    .icon-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .hero-heading {
        font-size: 32px;
    }
    
    .hero-subheading {
        font-size: 18px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn {
        font-size: 15px;
        padding: 0.75rem 1.5rem;
        width: 100%;
    }
    
    .stat-item {
        width: 100%;
        padding: 1.5rem 1rem;
    }
    
    .stat-value {
        font-size: 36px;
    }
    
    .stat-unit {
        font-size: 18px;
    }
    
    .stat-label {
        font-size: 16px;
    }
    
    .image-container {
        margin-top: 2rem;
    }
    
    .section-image {
        width: 100%;
        max-width: 100%;
    }
    
    .graph-container {
        margin-top: 2rem;
        padding: 0 1rem;
    }
    
    .growth-graph {
        min-height: 250px;
    }
    
    .milestones-container {
        flex-direction: column;
        gap: 2rem;
        margin-top: 3rem;
        padding: 0 1rem;
    }
    
    .milestone-item {
        width: 100%;
    }
    
    .milestone-title {
        font-size: 15px;
    }
    
    .milestone-description {
        font-size: 13px;
    }
    
    .brand-m {
        font-size: 150px;
    }
    
    .brand-text {
        font-size: 30px;
        letter-spacing: 4px;
    }
    
    .mask-heading {
        font-size: 32px;
    }
    
    .mask-text {
        font-size: 14px;
    }
    
    .mask-section-content {
        padding: 3rem 1.5rem;
    }
    
    .mask-section-2-content {
        flex-direction: column;
        gap: 1.5rem;
        padding: 3rem 1.5rem;
    }
    
    .mask-section-2-heading {
        font-size: 28px;
    }
    
    .mask-section-2-text {
        font-size: 14px;
    }
    
    .mask-section-4 {
        padding: 3rem 0;
    }
    
    .mask-section-4-container {
        padding: 0 1rem;
    }
    
    .mask-section-4-image-container {
        margin-bottom: 1.5rem;
    }
    
    .mask-section-4-content {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .mask-section-4-heading {
        font-size: 28px;
    }
    
    .mask-section-4-text {
        font-size: 14px;
    }
    
    .specs-section {
        padding: 2rem 1rem;
    }
    
    .specs-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .specs-heading {
        font-size: 28px;
    }
    
    .specs-tabs {
        justify-content: flex-start;
        gap: 1rem;
    }
    
    .specs-tab {
        font-size: 14px;
    }
    
    .specs-items {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .specs-category {
        margin-bottom: 2rem;
    }
    
    .specs-category-title {
        font-size: 20px;
        margin-bottom: 1rem;
    }
    
    .specs-value {
        font-size: 15px;
    }
    
    .specs-note {
        font-size: 13px;
    }
    
    .battery-section-content {
        flex-direction: column;
        gap: 2rem;
        padding: 2rem 1rem;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .feature-heading {
        font-size: 24px;
    }
    
    .feature-text {
        font-size: 14px;
    }
    
    .spec-value {
        font-size: 20px;
    }
    
    .spec-label {
        font-size: 14px;
    }
    
    .tab-section-content {
        gap: 2rem;
        padding: 2rem 1rem;
    }
    
    .tab-text-blocks {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .tab-block-heading {
        font-size: 20px;
    }
    
    .tab-block-text {
        font-size: 14px;
    }
    
    .tab-image-container {
        min-height: 300px;
    }
    
    .mobile-section-content {
        gap: 2rem;
        padding: 2rem 1rem;
    }
    
    .mobile-text-blocks {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .mobile-block-heading {
        font-size: 20px;
    }
    
    .mobile-block-text {
        font-size: 14px;
    }
    
    .mobile-image-container {
        min-height: 300px;
    }
    
    .cta-container {
        padding: 3rem 1rem;
    }
    
    .cta-content {
        flex-direction: column;
        gap: 2rem;
    }
    
    .cta-heading {
        font-size: 32px;
    }
    
    .cta-text {
        font-size: 15px;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-btn {
        width: 100%;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Ensure navbar stays on top when scrolling */
.navbar.scrolled {
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}