/* =============================================
   BotSmart International - Design System
   ============================================= */

:root {
    /* Color palette - matching original BotSmart blue theme */
    --primary-50: #EBF1FF;
    --primary-100: #D6E4FF;
    --primary-200: #ADC8FF;
    --primary-300: #84ADFF;
    --primary-400: #4D8FFF;
    --primary-500: #0052D9;
    --primary-600: #0040B0;
    --primary-700: #003088;
    --primary-800: #002060;
    --primary-900: #001038;

    --accent-purple: #764ba2;
    --accent-indigo: #6366f1;
    --accent-violet: #8b5cf6;

    /* Neutral colors */
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;

    /* Semantic */
    --bg-primary: #F0F4FA;
    --bg-white: #FFFFFF;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-accent: #0052D9;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;

    /* Borders & Shadows */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px rgba(0,82,217,0.08), 0 4px 10px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 50px rgba(0,82,217,0.12), 0 8px 20px rgba(0,0,0,0.06);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4,0,0.2,1);
    --transition-base: 300ms cubic-bezier(0.4,0,0.2,1);
    --transition-slow: 500ms cubic-bezier(0.4,0,0.2,1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* =============================================
   Navigation
   ============================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,82,217,0.08);
    transition: var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary-500);
}

.logo-tagline {
    font-size: 0.65rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.nav-links {
    display: flex;
    gap: var(--space-xs);
}

.nav-link {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--primary-500);
    border-radius: 1px;
    transition: var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-500);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    border: 1px solid var(--gray-200);
    transition: var(--transition-fast);
}

.lang-switch:hover {
    border-color: var(--primary-400);
    color: var(--primary-500);
}

.nav-cta {
    padding: 8px 20px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    box-shadow: 0 2px 8px rgba(0,82,217,0.3);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(0,82,217,0.4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    color: #fff;
    box-shadow: 0 4px 15px rgba(0,82,217,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,82,217,0.4);
}

.btn-outline {
    padding: 12px 28px;
    background: transparent;
    color: var(--primary-500);
    border: 2px solid var(--primary-400);
}

.btn-outline:hover {
    background: var(--primary-50);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

/* =============================================
   Hero Carousel
   ============================================= */
.hero {
    position: relative;
    height: 100vh;
    min-height: 650px;
    max-height: 900px;
    overflow: hidden;
    margin-top: 72px;
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
}

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

.hero-bg-1 {
    background: linear-gradient(135deg, #F0F4FA 0%, #E8EEF8 30%, #D6E4FF 70%, #C4D8FF 100%);
}

.hero-bg-2 {
    background: linear-gradient(135deg, #F0F4FA 0%, #E8ECF8 30%, #DDE0F7 70%, #D0D4F5 100%);
}

.hero-bg-3 {
    background: linear-gradient(135deg, #F0F4FA 0%, #EBF0F8 30%, #E6EFF7 70%, #DDE8F5 100%);
}

.hero-bg-4 {
    background: linear-gradient(135deg, #F0F4FA 0%, #E8ECF9 30%, #DBE3FA 70%, #CDD9FB 100%);
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(0,82,217,0.04) 0%, transparent 70%);
    animation: bgPulse 8s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.05); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-4xl);
}

.hero-text {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0,82,217,0.08);
    color: var(--primary-500);
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(0,82,217,0.12);
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    color: var(--gray-900);
}

.title-highlight {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-accent {
    display: block;
    margin-top: var(--space-sm);
    font-size: 2rem;
    font-weight: 700;
    -webkit-text-fill-color: var(--primary-500);
}

.title-line {
    display: inline;
    font-size: 1.8rem;
}

.title-plus, .title-equals {
    display: inline;
    font-size: 1.5rem;
    color: var(--primary-400);
    margin: 0 var(--space-sm);
}

.title-number {
    font-size: 5rem;
    margin-right: var(--space-md);
    line-height: 1;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--gray-500);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-points {
    margin-bottom: var(--space-2xl);
}

.hero-points li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: var(--space-sm);
}

.point-icon {
    color: var(--primary-500);
    font-weight: 700;
}

.hero-labs {
    margin-bottom: var(--space-2xl);
}

.hero-labs li {
    padding: var(--space-sm) 0;
    font-size: 0.95rem;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-200);
}

.detection-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
}

.tag {
    padding: 6px 14px;
    background: rgba(0,82,217,0.06);
    border: 1px solid rgba(0,82,217,0.12);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    color: var(--primary-500);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
}

/* Hero Visual */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.ai-graphic {
    position: relative;
    width: 340px;
    height: 340px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-text {
    font-family: var(--font-display);
    font-size: 7rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-400) 50%, var(--accent-indigo) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 3;
    text-shadow: none;
    filter: drop-shadow(0 4px 20px rgba(0,82,217,0.15));
}

.ai-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(0,82,217,0.1);
}

.ring-1 {
    width: 200px; height: 200px;
    animation: ringRotate 12s linear infinite;
}

.ring-2 {
    width: 280px; height: 280px;
    border-style: dashed;
    animation: ringRotate 20s linear infinite reverse;
}

.ring-3 {
    width: 340px; height: 340px;
    border-color: rgba(0,82,217,0.05);
    animation: ringRotate 30s linear infinite;
}

@keyframes ringRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.ai-particle {
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-400);
}

.particle-1 {
    top: 15%; right: 20%;
    animation: particleFloat 4s ease-in-out infinite;
    opacity: 0.6;
}

.particle-2 {
    bottom: 20%; left: 10%;
    width: 8px; height: 8px;
    background: var(--accent-indigo);
    animation: particleFloat 5s ease-in-out infinite 1s;
    opacity: 0.4;
}

.particle-3 {
    top: 50%; right: 5%;
    width: 6px; height: 6px;
    background: var(--accent-violet);
    animation: particleFloat 3.5s ease-in-out infinite 0.5s;
    opacity: 0.5;
}

@keyframes particleFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-15px) scale(1.2); }
}

/* Model / Lab / Detect graphics */
.model-graphic, .lab-graphic, .detect-graphic {
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.model-node {
    position: absolute;
    padding: 12px 20px;
    background: rgba(0,82,217,0.08);
    border: 1px solid rgba(0,82,217,0.15);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--primary-500);
    font-size: 0.85rem;
}

.node-center {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    color: #fff;
    font-size: 1.2rem;
    padding: 20px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: none;
}

.node-1 { top: 10%; right: 10%; animation: nodeFloat 3s ease-in-out infinite; }
.node-2 { bottom: 15%; left: 5%; animation: nodeFloat 4s ease-in-out infinite 0.5s; }
.node-3 { bottom: 10%; right: 15%; animation: nodeFloat 3.5s ease-in-out infinite 1s; }

@keyframes nodeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.lab-icon {
    position: absolute;
    font-size: 3rem;
    animation: labFloat 4s ease-in-out infinite;
}

.lab-1 { top: 10%; left: 20%; animation-delay: 0s; }
.lab-2 { top: 15%; right: 15%; animation-delay: 0.5s; }
.lab-3 { bottom: 20%; left: 15%; animation-delay: 1s; }
.lab-4 { bottom: 15%; right: 20%; animation-delay: 1.5s; }

@keyframes labFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-12px) rotate(5deg); }
}

.detect-graphic {
    background: radial-gradient(circle, rgba(0,82,217,0.04) 0%, transparent 70%);
    border-radius: 50%;
}

.detect-icon {
    font-size: 5rem;
    animation: scanPulse 2s ease-in-out infinite;
}

.scan-line {
    position: absolute;
    top: 0;
    left: 10%;
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary-400), transparent);
    animation: scanMove 3s ease-in-out infinite;
}

@keyframes scanMove {
    0% { top: 10%; opacity: 0; }
    50% { opacity: 1; }
    100% { top: 90%; opacity: 0; }
}

@keyframes scanPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Carousel Dots */
.carousel-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-300);
    transition: var(--transition-base);
    cursor: pointer;
}

.dot.active {
    width: 32px;
    border-radius: 5px;
    background: var(--primary-500);
}

/* =============================================
   Services Section
   ============================================= */
.services {
    padding: var(--space-3xl) 0;
    background: var(--bg-primary);
    margin-top: -2px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.service-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-lg);
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid rgba(0,82,217,0.06);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

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

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(0,82,217,0.12);
}

.service-icon {
    margin-bottom: var(--space-lg);
    display: flex;
    justify-content: center;
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--gray-800);
}

.service-desc {
    font-size: 0.85rem;
    color: var(--gray-500);
    line-height: 1.5;
}

/* =============================================
   Section Headers
   ============================================= */
.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--gray-400);
    font-weight: 500;
}

/* =============================================
   Models Section
   ============================================= */
.models {
    padding: var(--space-4xl) 0;
    background: var(--bg-primary);
}

.model-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
    position: relative;
}

.model-tabs::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gray-200);
}

.model-tab {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: var(--space-md) var(--space-lg);
    position: relative;
    transition: var(--transition-base);
}

.model-tab::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-500);
    border-radius: 2px 2px 0 0;
    transform: scaleX(0);
    transition: var(--transition-base);
}

.model-tab.active,
.model-tab:hover {
    color: var(--primary-500);
}

.model-tab.active::after {
    transform: scaleX(1);
}

.model-panel {
    display: none;
}

.model-panel.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.model-panel-inner {
    display: flex;
    gap: var(--space-4xl);
    align-items: center;
    background: linear-gradient(135deg, #1a237e 0%, #283593 30%, #1565c0 70%, #0d47a1 100%);
    border-radius: var(--radius-xl);
    padding: var(--space-4xl);
    color: #fff;
    overflow: hidden;
    position: relative;
}

.model-panel-inner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(77,143,255,0.15) 0%, transparent 60%);
}

.model-info {
    flex: 1;
    position: relative;
    z-index: 2;
}

.model-name {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-xl);
}

.model-description {
    font-size: 0.95rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
    margin-bottom: var(--space-2xl);
}

.model-description strong {
    color: #FFD54F;
}

.model-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
}

.stat-label {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.6);
    margin-top: 4px;
}

.model-visual {
    flex: 0.6;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.model-card-graphic {
    position: relative;
    width: 250px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.shield-icon, .proofread-icon, .writing-icon {
    opacity: 0.9;
}

.floating-tag {
    position: absolute;
    padding: 6px 16px;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 500;
    animation: tagFloat 4s ease-in-out infinite;
}

.ft-1 { top: 10%; right: 0; animation-delay: 0s; }
.ft-2 { top: 35%; left: -10%; animation-delay: 0.5s; }
.ft-3 { bottom: 25%; right: -5%; animation-delay: 1s; }
.ft-4 { bottom: 5%; left: 5%; animation-delay: 1.5s; }

@keyframes tagFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

/* =============================================
   Products Section
   ============================================= */
.products {
    padding: var(--space-4xl) 0;
    background: var(--bg-white);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    position: relative;
}

.product-tabs::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gray-200);
}

.product-tab {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-500);
    padding: var(--space-md) var(--space-lg);
    position: relative;
    transition: var(--transition-base);
}

.product-tab::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-500);
    border-radius: 2px 2px 0 0;
    transform: scaleX(0);
    transition: var(--transition-base);
}

.product-tab.active,
.product-tab:hover {
    color: var(--primary-500);
}

.product-tab.active::after {
    transform: scaleX(1);
}

.product-panel {
    display: none;
}

.product-panel.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.product-highlights {
    display: flex;
    justify-content: center;
    gap: var(--space-4xl);
    margin-bottom: var(--space-3xl);
}

.highlight {
    text-align: center;
}

.highlight-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-500);
    line-height: 1;
}

.highlight-unit {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-500);
    margin-top: 4px;
}

.highlight-desc {
    display: block;
    font-size: 0.82rem;
    color: var(--gray-500);
    margin-top: 8px;
    max-width: 200px;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.feature-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl) var(--space-lg);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-base);
    border: 1px solid transparent;
}

.feature-card:hover {
    background: var(--bg-white);
    border-color: rgba(0,82,217,0.1);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.feature-card span {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--gray-700);
}

/* =============================================
   Cases Section
   ============================================= */
.cases {
    padding: var(--space-4xl) 0;
    background: var(--bg-primary);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.case-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: var(--transition-base);
    border: 1px solid rgba(0,82,217,0.06);
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-400));
    transform: scaleX(0);
    transition: var(--transition-base);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.case-card:hover::before {
    transform: scaleX(1);
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0,82,217,0.06);
    color: var(--primary-500);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.case-logo {
    margin-bottom: var(--space-lg);
}

.case-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.case-desc {
    font-size: 0.88rem;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.case-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-500);
    transition: var(--transition-fast);
}

.case-link:hover {
    color: var(--primary-600);
}

/* =============================================
   Partners Section
   ============================================= */
.partners {
    padding: var(--space-4xl) 0;
    background: var(--bg-white);
}

.partner-categories {
    display: flex;
    flex-direction: column;
    gap: var(--space-3xl);
}

.partner-cat-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.partner-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.partner-logo {
    padding: var(--space-md) var(--space-xl);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    transition: var(--transition-base);
}

.partner-logo:hover {
    color: var(--primary-500);
    border-color: var(--primary-300);
    background: var(--primary-50);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

/* =============================================
   Company Profile & Funding
   ============================================= */
.company-profile {
    padding: var(--space-4xl) 0;
    background: var(--bg-primary);
}

.company-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-4xl);
}

.company-overview {
    background: var(--bg-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,82,217,0.06);
}

.company-heading {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-600);
    margin-bottom: var(--space-md);
}

.company-desc {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

.funding-timeline {
    position: relative;
    padding-left: var(--space-lg);
}

.funding-timeline::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 40px;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
    border-radius: 1px;
}

.timeline-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--space-xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item:last-child::after {
    content: '';
    position: absolute;
    left: -20px;
    top: 24px;
    bottom: 0;
    width: 4px;
    background: var(--bg-white);
}

.timeline-dot {
    position: absolute;
    left: -var(--space-lg);
    top: 5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-500);
    box-shadow: 0 0 0 4px var(--primary-100);
}

.timeline-item:first-of-type .timeline-dot {
    background: linear-gradient(135deg, var(--primary-400), var(--accent-indigo));
    box-shadow: 0 0 0 4px var(--primary-100), 0 0 10px rgba(99, 102, 241, 0.4);
    transform: scale(1.2);
}

.timeline-content {
    background: var(--gray-50);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition-fast);
}

.timeline-content:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.timeline-date {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-500);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timeline-amount {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.timeline-investor, .timeline-purpose {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.timeline-investor strong, .timeline-purpose strong {
    color: var(--gray-800);
}

.investors-panel {
    display: flex;
    flex-direction: column;
}

.investors-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--primary-100);
}

.investor-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.investor-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,82,217,0.06);
    transition: var(--transition-base);
}

.investor-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-200);
}

.inv-icon {
    font-size: 1.8rem;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: var(--radius-md);
}

.inv-details h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.inv-details p {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* =============================================
   Offices Section
   ============================================= */
.offices {
    padding: var(--space-4xl) 0;
    background: var(--bg-primary);
}

.office-list {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.office-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-white);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    border: 1px solid rgba(0,82,217,0.06);
}

.office-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: rgba(0,82,217,0.12);
}

.office-item.office-hq {
    grid-column: span 2;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-400));
    color: #fff;
    border: none;
}

.office-marker {
    font-size: 0.8rem;
    color: var(--primary-500);
}

.office-hq .office-marker {
    color: #FFD54F;
    font-size: 1rem;
}

.office-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.office-info p {
    font-size: 0.75rem;
    opacity: 0.8;
}

.hq-badge {
    display: inline-block;
    padding: 2px 8px;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    font-size: 0.65rem;
    font-weight: 700;
    margin-left: 6px;
    vertical-align: middle;
}

/* =============================================
   CTA Section
   ============================================= */
.cta {
    padding: var(--space-4xl) 0;
    background: linear-gradient(135deg, #0d1b42 0%, #1a237e 30%, #283593 60%, #1565c0 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 50%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(77,143,255,0.12) 0%, transparent 60%);
}

.cta-inner {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: flex-start;
    gap: var(--space-3xl);
}

.cta-content {
    flex: 1;
}

.cta-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-lg);
}

.cta-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--space-2xl);
    max-width: 500px;
}

.cta-actions {
    display: flex;
    gap: var(--space-lg);
}

.cta .btn-primary {
    background: linear-gradient(135deg, #4D8FFF, #85B8FF);
    box-shadow: 0 4px 20px rgba(77,143,255,0.4);
}

.cta .btn-outline {
    border-color: rgba(255,255,255,0.3);
    color: #fff;
}

.cta .btn-outline:hover {
    background: rgba(255,255,255,0.1);
}

/* Contact Form */
.cta-form {
    flex: 0 0 380px;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
}

.form-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: #fff;
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-sm);
    color: #fff;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,0.45);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-400);
    background: rgba(255,255,255,0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 70px;
}

.btn-block {
    width: 100%;
    justify-content: center;
    padding: 14px 28px;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.82rem;
}

.form-note {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.45);
    margin-top: var(--space-sm);
    text-align: center;
}

.form-success {
    text-align: center;
    padding: var(--space-xl) 0;
    color: #fff;
}

.form-success svg {
    margin-bottom: var(--space-md);
}

.form-success h4 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.form-success p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

/* =============================================
   Footer
   ============================================= */
.footer {
    background: #0a0f1c;
    color: rgba(255,255,255,0.7);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.footer-logo span {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
}

.footer-about {
    font-size: 0.85rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.5);
}

.footer-links-col h4,
.footer-contact h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--space-lg);
}

.footer-links-col ul li {
    margin-bottom: var(--space-sm);
}

.footer-links-col a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    transition: var(--transition-fast);
}

.footer-links-col a:hover {
    color: var(--primary-400);
}

.footer-contact p {
    font-size: 0.85rem;
    margin-bottom: var(--space-sm);
    color: rgba(255,255,255,0.5);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.35);
}

.footer-icp {
    margin-top: var(--space-sm);
    font-size: 0.75rem !important;
}

/* =============================================
   Floating Action Buttons
   ============================================= */
.fab-container {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 900;
}

.fab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0,82,217,0.1);
    border-radius: var(--radius-md);
    color: var(--primary-500);
    transition: var(--transition-base);
    box-shadow: var(--shadow-md);
}

.fab:hover {
    background: var(--primary-500);
    color: #fff;
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.fab-label {
    font-size: 0.65rem;
    font-weight: 600;
    white-space: nowrap;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--bg-white);
    border: 1px solid var(--gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 800;
    box-shadow: var(--shadow-md);
}

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

.back-to-top:hover {
    background: var(--primary-500);
    color: #fff;
    border-color: var(--primary-500);
    transform: translateY(-3px);
}

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 1024px) {
    .hero-title { font-size: 2.5rem; }
    .hero-visual { display: none; }
    .hero-text { max-width: 100%; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .model-tabs { gap: var(--space-md); flex-wrap: wrap; }
    .model-panel-inner { flex-direction: column; padding: var(--space-2xl); }
    .model-visual { margin-top: var(--space-xl); }
    .cases-grid { grid-template-columns: 1fr; }
    .company-grid { grid-template-columns: 1fr; }
    .office-list { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .product-tabs { flex-wrap: wrap; gap: var(--space-md); }
    .product-highlights { gap: var(--space-2xl); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions { display: none; }
    .nav-toggle { display: flex; }
    
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        padding: var(--space-xl);
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
    }
    
    .hero { min-height: 550px; }
    .hero-title { font-size: 2rem; }
    .title-accent { font-size: 1.5rem; }
    .title-number { font-size: 3.5rem; }
    
    .services-grid { grid-template-columns: 1fr 1fr; gap: var(--space-md); }
    .service-card { padding: var(--space-lg); }
    
    .section-title { font-size: 1.8rem; }
    
    .model-name { font-size: 2rem; }
    .model-stats { flex-wrap: wrap; gap: var(--space-lg); }
    
    .product-highlights { flex-direction: column; align-items: center; gap: var(--space-xl); }
    .product-features { grid-template-columns: repeat(2, 1fr); }
    
    .office-list { grid-template-columns: repeat(2, 1fr); }
    .office-item.office-hq { grid-column: span 2; }
    
    .cta-title { font-size: 1.8rem; }
    .cta-actions { flex-direction: column; align-items: center; }
    
    .footer-grid { grid-template-columns: 1fr; }
    
    .fab-container { right: 12px; }
    .fab-label { display: none; }
}

@media (max-width: 480px) {
    .container { padding: 0 var(--space-md); }
    .hero-title { font-size: 1.6rem; }
    .services-grid { grid-template-columns: 1fr; }
    .product-tabs { 
        flex-direction: column;
        align-items: center;
    }
    .product-features { grid-template-columns: 1fr; }
    .office-list { grid-template-columns: 1fr; }
    .office-item.office-hq { grid-column: span 1; }
    .partner-logos { flex-direction: column; align-items: center; }
}

/* =============================================
   Cookie Consent Banner
   ============================================= */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: var(--space-lg) var(--space-xl);
    transform: translateY(0);
    transition: transform 0.4s ease;
}

.cookie-banner.hidden {
    transform: translateY(100%);
}

.cookie-content {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.cookie-content p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.6;
    flex: 1;
}

.cookie-content p a {
    color: var(--primary-400);
    text-decoration: underline;
}

.cookie-actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.cookie-banner .btn-outline {
    border-color: rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.7);
    padding: 8px 18px;
    font-size: 0.82rem;
}

.cookie-banner .btn-outline:hover {
    background: rgba(255,255,255,0.08);
}

.cookie-banner .btn-primary {
    padding: 8px 18px;
    font-size: 0.82rem;
}

/* =============================================
   Social Links
   ============================================= */
.footer-social {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.6);
    transition: var(--transition-fast);
}

.social-link:hover {
    background: rgba(255,255,255,0.15);
    color: #fff;
    transform: translateY(-2px);
}

/* =============================================
   CTA Form Responsive Overrides
   ============================================= */
@media (max-width: 768px) {
    .cta-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .cta-content {
        text-align: center;
    }
    .cta-desc {
        margin-left: auto;
        margin-right: auto;
    }
    .cta-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    .cta-form {
        flex: 1 1 auto;
        width: 100%;
        max-width: 420px;
    }
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}