/* ============================================
   WITNX - Zumthor-Inspired Brutalist Design
   Hardware-Enforced AI Accountability
   Minimal. Precise. No decoration without purpose.
   ============================================ */

:root {
    /* Core Colors - Monochromatic with surgical accents */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #161616;
    --bg-card: rgba(18, 18, 18, 0.9);
    --bg-card-hover: rgba(24, 24, 24, 0.95);
    
    /* Accent - Cold precision */
    --accent-primary: #00d4ff;
    --accent-secondary: #6366f1;
    --accent-tertiary: #f43f5e;
    --accent-muted: rgba(0, 212, 255, 0.08);
    
    /* Text - High contrast */
    --text-primary: #fafafa;
    --text-secondary: rgba(250, 250, 250, 0.6);
    --text-tertiary: rgba(250, 250, 250, 0.35);
    
    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-accent: rgba(0, 212, 255, 0.3);
    
    /* Typography - Swiss precision */
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;
    
    /* Spacing */
    --section-padding: clamp(80px, 10vw, 140px);
    --container-max: 1200px;
}

/* ============================================
   Reset & Base
   ============================================ */

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

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

body {
    font-family: var(--font-display);
    font-weight: 300;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   Background - Geometric Waves
   ============================================ */

#geometric-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.gradient-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 0%, rgba(0, 212, 255, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(99, 102, 241, 0.03) 0%, transparent 50%);
    z-index: 1;
    pointer-events: none;
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(24px, 5vw, 48px);
    position: relative;
    z-index: 10;
}

section {
    position: relative;
    z-index: 10;
}

/* ============================================
   Navigation - Minimal bar
   ============================================ */

.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px clamp(24px, 5vw, 48px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(180deg, rgba(10, 10, 10, 0.98) 0%, rgba(10, 10, 10, 0) 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 48px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-cta {
    padding: 10px 20px !important;
    background: transparent;
    border: 1px solid var(--border-accent);
    color: var(--accent-primary) !important;
    transition: all 0.2s ease !important;
}

.nav-cta:hover {
    background: var(--accent-muted);
}

/* ============================================
   Hero Section - Architectural
   ============================================ */

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
    padding: 140px clamp(24px, 5vw, 48px) var(--section-padding);
    max-width: 1400px;
    margin: 0 auto;
}

.hero-content {
    position: relative;
    z-index: 10;
}

.patent-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-accent);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent-primary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 40px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 32px;
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 480px;
    margin-bottom: 48px;
    font-weight: 300;
}

.hero-subtitle em {
    color: var(--accent-primary);
    font-style: normal;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons - Sharp, no curves */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: #00e5ff;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    border-color: var(--text-tertiary);
}

.btn-large {
    padding: 20px 40px;
    font-size: 0.9rem;
}

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

.chip-container {
    position: relative;
    width: 100%;
    max-width: 480px;
    aspect-ratio: 1;
}

.chip-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    position: relative;
    z-index: 2;
}

.chip-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 60%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    filter: blur(60px);
    z-index: 1;
}

.data-stream {
    display: none;
}

/* ============================================
   Section Headers - Typographic hierarchy
   ============================================ */

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-tag {
    display: inline-block;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--accent-secondary);
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--accent-secondary);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 500;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-weight: 300;
}

.section-desc em {
    color: var(--accent-primary);
    font-style: normal;
}

/* ============================================
   Problem Section
   ============================================ */

.problem-section {
    padding: var(--section-padding) 0;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-subtle);
}

.problem-card {
    background: var(--bg-card);
    padding: 48px 36px;
    transition: background 0.3s ease;
}

.problem-card:hover {
    background: var(--bg-card-hover);
}

.problem-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 28px;
    opacity: 0.9;
}

.problem-icon img {
    width: 100%;
    height: 100%;
}

.problem-card h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--accent-tertiary);
}

.problem-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 300;
}

.problem-card p em {
    color: var(--text-primary);
    font-style: normal;
}

/* Tightened Problem Section */
.problem-bullets {
    max-width: 600px;
    margin: 0 auto;
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.problem-item:last-child {
    border-bottom: none;
}

.problem-marker {
    color: var(--accent-tertiary);
    font-weight: 500;
}

.problem-item em {
    color: var(--text-primary);
    font-style: normal;
}

/* Why Now Section */
.why-now-section {
    padding: 80px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

.why-now-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.why-now-content .section-tag {
    margin-bottom: 24px;
}

.why-now-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.why-now-text strong {
    color: var(--text-primary);
}

/* Deployment Note */
.deployment-note {
    margin-top: 16px;
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-style: italic;
}

/* ============================================
   Technology Section - Flow diagram
   ============================================ */

.technology-section {
    padding: var(--section-padding) 0;
}

.tech-flow {
    display: flex;
    align-items: stretch;
    justify-content: center;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    min-width: 160px;
    flex: 1;
    max-width: 200px;
    transition: all 0.3s ease;
}

.flow-step:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-accent);
}

.step-number {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent-primary);
    margin-bottom: 16px;
    letter-spacing: 0.15em;
    opacity: 0.7;
}

.step-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.step-content h3 {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.step-content p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 300;
    line-height: 1.5;
}

.flow-connector {
    width: 32px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    align-self: center;
    opacity: 0.4;
    position: relative;
}

.flow-connector::before,
.flow-connector::after {
    content: '';
    position: absolute;
    width: 6px;
    height: 6px;
    border: 1px solid var(--accent-primary);
    top: 50%;
    transform: translateY(-50%);
}

.flow-connector::before {
    left: -3px;
}

.flow-connector::after {
    right: -3px;
    background: var(--accent-primary);
}

/* ============================================
   Features Section - Grid
   ============================================ */

.features-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border-subtle);
}

.feature-card {
    background: var(--bg-tertiary);
    padding: 40px 32px;
    transition: background 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
}

.feature-large {
    grid-column: span 2;
    grid-row: span 2;
    padding: 56px 48px;
    display: flex;
    flex-direction: column;
}

.feature-icon {
    width: 44px;
    height: 44px;
    margin-bottom: 24px;
}

.feature-icon img {
    width: 100%;
    height: 100%;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    font-weight: 300;
}

.feature-large h3 {
    font-size: 1.35rem;
}

.feature-large p {
    font-size: 1rem;
    max-width: 400px;
}

.feature-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 32px;
}

.visual-lock {
    width: 100px;
    height: 100px;
    border: 1px solid var(--border-subtle);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-lock::before {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border: 2px solid var(--accent-primary);
}

.visual-lock::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    background: var(--accent-primary);
}

/* ============================================
   Platform Section - Dual Product
   ============================================ */

.platform-section {
    padding: var(--section-padding) 0;
}

.platform-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 60px;
}

.platform-card {
    position: relative;
    background: linear-gradient(135deg, rgba(18, 18, 20, 0.95) 0%, rgba(12, 12, 14, 0.98) 100%);
    padding: 40px 36px;
    transition: all 0.4s ease;
    overflow: hidden;
    
    /* Chip outer frame */
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 
        0 0 0 1px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.03),
        0 20px 40px rgba(0, 0, 0, 0.4);
}

/* Circuit traces background pattern */
.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        /* Vertical traces */
        linear-gradient(90deg, transparent 49%, rgba(255,255,255,0.02) 49%, rgba(255,255,255,0.02) 51%, transparent 51%),
        /* Horizontal traces */
        linear-gradient(0deg, transparent 49%, rgba(255,255,255,0.02) 49%, rgba(255,255,255,0.02) 51%, transparent 51%),
        /* Diagonal accent traces */
        linear-gradient(45deg, transparent 48%, rgba(255,255,255,0.01) 48%, rgba(255,255,255,0.01) 52%, transparent 52%);
    background-size: 24px 24px, 24px 24px, 48px 48px;
    opacity: 0.6;
    pointer-events: none;
    z-index: 0;
}

/* Chip corner notches */
.platform-card::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    pointer-events: none;
    z-index: 0;
}

.platform-card > * {
    position: relative;
    z-index: 1;
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 0 0 1px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05),
        0 30px 60px rgba(0, 0, 0, 0.5);
}

/* TRACE chip styling */
.trace-card {
    border-top: 2px solid var(--accent-primary);
}

.trace-card::before {
    background-image: 
        linear-gradient(90deg, transparent 49%, rgba(0,212,255,0.03) 49%, rgba(0,212,255,0.03) 51%, transparent 51%),
        linear-gradient(0deg, transparent 49%, rgba(0,212,255,0.03) 49%, rgba(0,212,255,0.03) 51%, transparent 51%),
        linear-gradient(45deg, transparent 48%, rgba(0,212,255,0.02) 48%, rgba(0,212,255,0.02) 52%, transparent 52%);
    background-size: 24px 24px, 24px 24px, 48px 48px;
}

.trace-card:hover {
    border-color: var(--accent-primary);
    box-shadow: 
        0 0 0 1px rgba(0, 212, 255, 0.2),
        inset 0 1px 0 rgba(0, 212, 255, 0.1),
        0 30px 60px rgba(0, 212, 255, 0.15),
        0 0 80px rgba(0, 212, 255, 0.05);
}

/* PACE chip styling */
.pace-card {
    border-top: 2px solid var(--accent-secondary);
}

.pace-card::before {
    background-image: 
        linear-gradient(90deg, transparent 49%, rgba(99,102,241,0.03) 49%, rgba(99,102,241,0.03) 51%, transparent 51%),
        linear-gradient(0deg, transparent 49%, rgba(99,102,241,0.03) 49%, rgba(99,102,241,0.03) 51%, transparent 51%),
        linear-gradient(45deg, transparent 48%, rgba(99,102,241,0.02) 48%, rgba(99,102,241,0.02) 52%, transparent 52%);
    background-size: 24px 24px, 24px 24px, 48px 48px;
}

.pace-card:hover {
    border-color: var(--accent-secondary);
    box-shadow: 
        0 0 0 1px rgba(99, 102, 241, 0.2),
        inset 0 1px 0 rgba(99, 102, 241, 0.1),
        0 30px 60px rgba(99, 102, 241, 0.15),
        0 0 80px rgba(99, 102, 241, 0.05);
}

/* Chip pin indicators */
.platform-card .card-header::before {
    content: '';
    position: absolute;
    top: 16px;
    right: 24px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    opacity: 0.3;
    box-shadow: 
        14px 0 0 currentColor,
        28px 0 0 currentColor;
}

.trace-card .card-header::before {
    color: var(--accent-primary);
}

.pace-card .card-header::before {
    color: var(--accent-secondary);
}

.card-header {
    position: relative;
    margin-bottom: 24px;
}

.card-tag {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.trace-card .card-tag {
    background: var(--accent-muted);
    color: var(--accent-primary);
}

.pace-card .card-tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-secondary);
}

.platform-card h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.trace-card h3 {
    color: var(--accent-primary);
}

.pace-card h3 {
    color: var(--accent-secondary);
}

.card-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.card-body p {
    margin-bottom: 20px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.card-body p em {
    color: var(--text-primary);
    font-style: normal;
}

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

.feature-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.9rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-list li::before {
    content: '';
    width: 4px;
    height: 4px;
    background: var(--accent-primary);
}

.pace-card .feature-list li::before {
    background: var(--accent-secondary);
}

.card-link {
    display: inline-block;
    margin-top: 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.card-link:hover {
    color: var(--text-primary);
}

.platform-synergy {
    display: flex;
    align-items: center;
    gap: 32px;
}

.synergy-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
}

.synergy-content {
    text-align: center;
    max-width: 500px;
}

.synergy-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.synergy-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.synergy-content strong {
    color: var(--text-primary);
}

/* ============================================
   Product Sections (TRACE & PACE)
   ============================================ */

.product-section {
    padding: var(--section-padding) 0;
}

.trace-section {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.pace-section {
    background: var(--bg-secondary);
}

.product-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.product-tag {
    display: inline-block;
    padding: 6px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.trace-tag {
    background: var(--accent-muted);
    color: var(--accent-primary);
}

.pace-tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-secondary);
}

.product-header h2 {
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 16px;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-subtle);
    margin-top: 60px;
}

.product-features .feature-card {
    background: var(--bg-card);
    padding: 32px 24px;
    transition: background 0.3s ease;
}

.product-features .feature-card:hover {
    background: var(--bg-card-hover);
}

.product-features .feature-card h4 {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.product-features .feature-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* PACE Diagram */
.pace-diagram {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 48px;
    text-align: center;
}

.diagram-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 40px;
}

.diagram-node {
    padding: 24px 32px;
    border: 1px solid var(--border-subtle);
    min-width: 180px;
}

.source-node {
    border-color: rgba(255, 255, 255, 0.2);
}

.authority-node {
    border-color: var(--accent-secondary);
    background: rgba(99, 102, 241, 0.05);
}

.proof-node {
    border-color: var(--accent-primary);
    background: var(--accent-muted);
}

.node-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.node-detail {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.diagram-arrow {
    color: var(--text-tertiary);
    font-size: 1.5rem;
}

.diagram-verifiers {
    display: flex;
    justify-content: center;
    gap: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
}

.verifier {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 8px 16px;
    border: 1px solid var(--border-subtle);
}

/* ============================================
   Applications Section
   ============================================ */

.applications-section {
    padding: var(--section-padding) 0;
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-subtle);
}

.app-card {
    background: var(--bg-card);
    padding: 40px 28px;
    text-align: center;
    transition: background 0.3s ease;
}

.app-card:hover {
    background: var(--bg-card-hover);
}

.app-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 20px;
}

.app-icon img {
    width: 100%;
    height: 100%;
}

.app-card h3 {
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.app-card p {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 300;
}

/* ============================================
   Specs Section
   ============================================ */

.specs-section {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

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

.specs-text h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.25rem);
    font-weight: 500;
    margin-bottom: 40px;
    line-height: 1.2;
}

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

.specs-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.spec-check {
    color: var(--accent-primary);
    font-weight: 500;
    font-family: var(--font-mono);
}

.specs-visual {
    display: flex;
    justify-content: center;
}

.arch-diagram {
    max-width: 100%;
    opacity: 0.9;
}

/* ============================================
   CTA Section
   ============================================ */

.cta-section {
    padding: var(--section-padding) 0;
}

.cta-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    padding: clamp(48px, 8vw, 80px);
    text-align: center;
}

.cta-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--accent-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent-secondary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 32px;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 20px;
}

.cta-content > p {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 48px;
    font-weight: 300;
}

.contact-form {
    max-width: 560px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 12px;
}

.contact-form input,
.contact-form select {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 300;
    transition: border-color 0.2s ease;
}

.contact-form input::placeholder {
    color: var(--text-tertiary);
}

.contact-form input:focus,
.contact-form select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.contact-form select {
    cursor: pointer;
    color: var(--text-tertiary);
}

.contact-form select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.contact-form button {
    width: 100%;
    margin-top: 8px;
    justify-content: center;
}

/* ============================================
   Footer - Minimal
   ============================================ */

.main-footer {
    padding: 64px 0 32px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 280px;
}

.footer-logo {
    width: 40px;
    height: 40px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 12px;
    font-weight: 300;
}

.patent-notice {
    display: inline-block;
    padding: 4px 8px;
    border: 1px solid var(--border-accent);
    font-size: 0.65rem;
    color: var(--accent-primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.footer-links {
    display: flex;
    gap: 64px;
}

.footer-col h4 {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 20px;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 6px 0;
    transition: color 0.2s ease;
    font-weight: 300;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.75rem;
    font-weight: 300;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }
    
    .hero-subtitle {
        margin: 0 auto 48px;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .chip-container {
        max-width: 320px;
    }
    
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .feature-large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .specs-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .specs-visual {
        order: -1;
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-features {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .diagram-row {
        flex-direction: column;
        gap: 16px;
    }
    
    .diagram-arrow {
        transform: rotate(90deg);
    }
    
    .diagram-verifiers {
        flex-wrap: wrap;
        gap: 16px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .problem-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-large {
        grid-column: span 1;
    }
    
    .tech-flow {
        flex-direction: column;
        align-items: center;
    }
    
    .flow-connector {
        width: 1px;
        height: 24px;
    }
    
    .flow-step {
        width: 100%;
        max-width: 280px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        gap: 40px;
    }
    
    .applications-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .product-features {
        grid-template-columns: 1fr;
    }
    
    .platform-synergy {
        flex-direction: column;
        gap: 24px;
    }
    
    .synergy-line {
        width: 100%;
        height: 1px;
    }
}

/* ============================================
   Animations - Subtle, purposeful
   ============================================ */

@keyframes fade-in {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-content,
.section-header {
    animation: fade-in 0.6s ease-out forwards;
}