/* ============================================
   CSS Variables & Design System
   ============================================ */
:root {
    /* Colors - Cold Tone Palette */
    --color-primary: #0077B6;
    --color-primary-light: #00B4D8;
    --color-primary-dark: #023E8A;
    --color-accent: #00E5FF;
    --color-bg-dark: #0B1D3A;
    --color-bg-darker: #061224;
    --color-bg-card: #0F2847;
    --color-bg-light: #F0F7FA;
    --color-bg-white: #FFFFFF;
    --color-text-primary: #E8F4F8;
    --color-text-secondary: #94A3B8;
    --color-text-dark: #1E293B;
    --color-text-muted: #64748B;
    --color-border: rgba(0, 180, 216, 0.15);
    --color-border-light: rgba(255, 255, 255, 0.08);

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --section-padding: 120px;
    --container-max: 80%;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.15);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--color-text-dark);
    background: var(--color-bg-white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 48px;
}

/* ============================================
   Section Common Styles
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header.light {
    position: relative;
    z-index: 1;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-primary-light);
    margin-bottom: 16px;
    padding: 6px 16px;
    background: rgba(0, 180, 216, 0.08);
    border-radius: 20px;
    border: 1px solid rgba(0, 180, 216, 0.15);
}

.section-header.light .section-tag {
    background: rgba(0, 180, 216, 0.15);
    border-color: rgba(0, 180, 216, 0.25);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header.light .section-title {
    color: #FFFFFF;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 100%;
    margin: 0 auto;
    line-height: 1.8;
}

.section-header.light .section-desc {
    color: rgba(255, 255, 255, 0.7);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #FFFFFF;
    box-shadow: 0 4px 16px rgba(0, 180, 216, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 180, 216, 0.45);
}

.btn-outline {
    background: transparent;
    color: #FFFFFF;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-large {
    padding: 18px 48px;
    font-size: 1.05rem;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(11, 29, 58, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 700;
    color: #FFFFFF;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.75);
    padding: 8px 18px;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.08);
}

.nav-cta {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary)) !important;
    color: #FFFFFF !important;
    padding: 8px 22px !important;
    border-radius: 6px !important;
}

.nav-cta:hover {
    box-shadow: 0 4px 16px rgba(0, 180, 216, 0.35);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: #FFFFFF;
    border-radius: 2px;
    transition: all var(--transition-base);
}

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

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

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

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(6, 18, 36, 0.92) 0%,
        rgba(11, 29, 58, 0.85) 40%,
        rgba(2, 62, 138, 0.75) 100%
    );
}

.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 100%;
    padding: 0 48px;
    padding-top: 80px;
}

.hero-badge {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 24px;
    padding: 8px 20px;
    border: 1px solid rgba(0, 229, 255, 0.25);
    border-radius: 24px;
    background: rgba(0, 229, 255, 0.06);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-highlight {
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 100%;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary-light);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 6px;
    letter-spacing: 0.5px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.15);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.scroll-indicator span {
    font-size: 0.72rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(0, 180, 216, 0.6), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ============================================
   Capabilities Section
   ============================================ */
.capabilities {
    background: var(--color-bg-white);
    padding: 80px 0;
    margin-top: -60px;
    position: relative;
    z-index: 3;
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.capability-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.capability-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 180, 216, 0.3);
}

.capability-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(0, 119, 182, 0.08));
    color: var(--color-primary-light);
}

.capability-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 10px;
}

.capability-card p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   Products Section
   ============================================ */
.products {
    padding: var(--section-padding) 0;
    background: var(--color-bg-light);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.tab-btn {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 10px 24px;
    border: 1.5px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg-white);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    border-color: var(--color-primary-light);
    color: var(--color-primary);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    color: #FFFFFF;
    border-color: transparent;
    box-shadow: 0 4px 16px rgba(0, 180, 216, 0.25);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.product-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 48px;
}

.product-showcase.reverse {
    direction: rtl;
}

.product-showcase.reverse > * {
    direction: ltr;
}

.product-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-bg-dark), var(--color-bg-card));
}

.product-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.product-visual:hover img {
    transform: scale(1.05);
}

.product-visual-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #FFFFFF;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: 6px;
}

.product-info h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 12px;
}

.product-lead {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
    line-height: 1.7;
}

.feature-list {
    margin-bottom: 24px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--color-text-dark);
    margin-bottom: 14px;
    line-height: 1.6;
}

.feature-list li svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.product-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 15px;
}

.tag {
    font-size: 0.78rem;
    font-weight: 500;
    padding: 5px 14px;
    background: rgba(0, 180, 216, 0.08);
    color: var(--color-primary);
    border-radius: 20px;
    border: 1px solid rgba(0, 180, 216, 0.15);
}

.optical-comm-section {
    margin-top: 20px;
    padding: 25px;
    background: rgba(0, 180, 216, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(0, 180, 216, 0.15);
    width: 100%;
}

.optical-comm-section h4 {
    color: var(--color-primary);
    font-size: 1.3rem;
    margin-bottom: 15px;
    line-height: 1.6;
}

.optical-comm-section p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 15px;
}

.optical-comm-section h5 {
    color: var(--color-text-dark);
    font-size: 1.1rem;
    margin-top: 20px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.star-product {
    margin-top: 20px;
    padding: 20px;
    background: white;
    border-radius: 8px;
    border-left: 4px solid var(--color-primary);
}

.star-product h5 {
    color: var(--color-text-dark);
    font-size: 1.4rem;
    margin-bottom: 16px;
    line-height: 1.5;
    font-weight: 600;
}

.star-product h6 {
    color: var(--color-primary);
    font-size: 1.05rem;
    margin-bottom: 12px;
    line-height: 1.5;
}

.star-product p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin: 0;
}

/* Featured Product */
.featured-product {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.featured-header {
    padding: 24px 32px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.06), rgba(0, 119, 182, 0.04));
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 16px;
}

.featured-badge {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #FFFFFF;
    padding: 4px 12px;
    background: linear-gradient(135deg, #F59E0B, #D97706);
    border-radius: 4px;
    white-space: nowrap;
}

.featured-header h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-dark);
}

.featured-body {
    padding: 28px 32px;
}

.featured-body p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 24px;
}

.featured-specs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.spec-item {
    text-align: center;
    padding: 16px;
    background: var(--color-bg-light);
    border-radius: 10px;
}

.spec-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spec-value {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* Product Table */
.product-table-wrapper {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
    border: 2px solid var(--color-primary);
    border-radius: 8px;
    overflow: hidden;
}

.data-table th {
    background: var(--color-primary-dark);
    color: white;
    padding: 12px;
    text-align: left;
    font-weight: 600;
    border: 1px solid var(--color-primary);
}

.data-table td {
    padding: 10px 12px;
    border: 1px solid var(--color-primary);
}

.data-table tr:nth-child(even) {
    background: rgba(0, 119, 182, 0.05);
}

.data-table tr:hover {
    background: rgba(0, 119, 182, 0.1);
}

.table-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    padding: 20px 28px;
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.06), rgba(0, 119, 182, 0.04));
}

.table-scroll {
    overflow-x: auto;
}

.product-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.product-table thead {
    background: var(--color-bg-dark);
}

.product-table th {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    padding: 14px 20px;
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.product-table td {
    padding: 14px 20px;
    color: var(--color-text-dark);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.product-table tbody tr:hover {
    background: rgba(0, 180, 216, 0.04);
}

.product-table tbody tr:last-child td {
    border-bottom: none;
}

.part-no {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-primary);
}

/* Process Flow */
.process-flow {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 40px;
    box-shadow: var(--shadow-sm);
}

.flow-title {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    text-align: center;
    margin-bottom: 32px;
}

.flow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.flow-step {
    text-align: center;
    flex: 1;
    min-width: 120px;
}

.step-number {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary-light);
    margin-bottom: 8px;
}

.step-label {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.flow-arrow {
    color: var(--color-border);
    flex-shrink: 0;
}

/* ============================================
   Solutions Section
   ============================================ */
.solutions {
    position: relative;
    padding: var(--section-padding) 0;
    overflow: hidden;
}

.solutions-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.solutions-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.solutions-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(6, 18, 36, 0.95) 0%,
        rgba(11, 29, 58, 0.92) 50%,
        rgba(6, 18, 36, 0.95) 100%
    );
}

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

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

.solution-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 36px 28px;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.solution-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 180, 216, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 180, 216, 0.1);
}

.solution-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.15), rgba(0, 119, 182, 0.1));
    color: var(--color-primary-light);
    margin-bottom: 20px;
}

.solution-card h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 10px;
}

.solution-card p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.7;
}

/* ============================================
   Advantages Section
   ============================================ */
.advantages {
    padding: var(--section-padding) 0;
    background: var(--color-bg-white);
}

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

.advantage-card {
    padding: 40px 32px;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-bg-white);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 180, 216, 0.2);
}

.advantage-card:hover::before {
    opacity: 1;
}

.advantage-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: rgba(0, 180, 216, 0.08);
    line-height: 1;
    margin-bottom: 16px;
}

.advantage-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ============================================
   Roadmap Section
   ============================================ */
.roadmap {
    padding: var(--section-padding) 0;
    background: var(--color-bg-light);
}

.roadmap-timeline {
    max-width: 100%;
    margin: 0 auto;
    position: relative;
}

.timeline-item {
    display: flex;
    gap: 32px;
    position: relative;
}

.timeline-item:not(:last-child) {
    margin-bottom: 48px;
}

.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.marker-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.15);
    flex-shrink: 0;
}

.marker-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, var(--color-primary-light), rgba(0, 180, 216, 0.1));
    margin-top: 8px;
}

.timeline-content {
    padding-bottom: 8px;
}

.timeline-phase {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary-light);
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 8px;
}

.timeline-content p {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* ============================================
   About Section
   ============================================ */
.about {
    position: relative;
    padding: var(--section-padding) 0;
    overflow: hidden;
}

.about-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.about-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(6, 18, 36, 0.94) 0%,
        rgba(11, 29, 58, 0.9) 100%
    );
}

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

.about-content {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
}

.about-text .section-tag {
    margin-bottom: 20px;
}

.about-text .section-title {
    color: #FFFFFF;
    margin-bottom: 20px;
}

.about-lead {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 16px;
    font-weight: 500;
}

.about-text > p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
    margin-bottom: 12px;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.highlight-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 24px 16px;
    text-align: center;
    transition: all var(--transition-base);
}

.highlight-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(0, 180, 216, 0.25);
}

.highlight-icon {
    color: var(--color-primary-light);
    margin-bottom: 12px;
}

.highlight-item strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 4px;
}

.highlight-item span {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: var(--section-padding) 0;
    background: var(--color-bg-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.contact-card {
    text-align: center;
    padding: 40px 24px;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: all var(--transition-base);
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 180, 216, 0.25);
}

.contact-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(0, 180, 216, 0.1), rgba(0, 119, 182, 0.08));
    color: var(--color-primary-light);
}

.contact-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 8px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.contact-cta {
    text-align: center;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg-darker);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-desc {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.7;
    margin-top: 16px;
    max-width: 100%;
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 0.88rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 20px;
}

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

.footer-links a {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.3);
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .capabilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .featured-specs {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(6, 18, 36, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: right var(--transition-base);
        box-shadow: -4px 0 24px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: 1rem;
        padding: 12px 16px;
        width: 100%;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 2rem;
    }

    .product-showcase {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .product-showcase.reverse {
        direction: ltr;
    }

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

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

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

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

    .about-highlights {
        grid-template-columns: 1fr;
    }

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

    .flow-steps {
        flex-direction: column;
    }

    .flow-arrow {
        transform: rotate(90deg);
    }

    .featured-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .featured-body {
        padding: 20px;
    }

    .featured-specs {
        grid-template-columns: 1fr 1fr;
    }

    .process-flow {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .product-tabs {
        gap: 6px;
    }

    .tab-btn {
        font-size: 0.8rem;
        padding: 8px 16px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }
}