/* ============================================
   AutoMow AI — Premium Website Styles
   ============================================ */

:root {
    --bg: #050508;
    --bg-alt: #0a0a12;
    --surface: #12121e;
    --surface-hover: #1a1a2e;
    --border: rgba(255,255,255,0.06);
    --text: #f0f0f5;
    --text-muted: #8888a0;
    --text-dim: #555570;
    --accent: #2ecc71;
    --accent-dim: rgba(46,204,113,0.15);
    --accent-glow: rgba(46,204,113,0.4);
    --gradient: linear-gradient(135deg, #2ecc71, #00b894, #27ae60);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::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: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a { color: inherit; text-decoration: none; }

/* Typography */
.text-accent { color: var(--accent); }
.text-gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.nav.scrolled {
    background: rgba(5,5,8,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.02em;
}

.logo-icon {
    color: var(--accent);
    display: flex;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--accent) !important;
    color: var(--bg) !important;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 600 !important;
    transition: var(--transition);
}

.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

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

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

.mobile-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(5,5,8,0.95);
    backdrop-filter: blur(20px);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    z-index: 999;
    border-bottom: 1px solid var(--border);
}

.mobile-menu a {
    font-size: 1rem;
    color: var(--text-muted);
    padding: 8px 0;
}

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

/* ============================================
   Hero
   ============================================ */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    position: relative;
    padding: 120px 24px 80px;
    max-width: 1200px;
    margin: 0 auto;
    gap: 40px;
}

.hero-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    top: -30%;
    left: -10%;
    width: 60%;
    height: 70%;
    background: radial-gradient(ellipse, var(--accent-dim) 0%, transparent 70%);
    opacity: 0.5;
    animation: float 15s ease-in-out infinite;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black, transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-dim);
    border: 1px solid rgba(46,204,113,0.2);
    border-radius: 100px;
    padding: 6px 16px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 32px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}

.hero-title {
    font-size: clamp(2.8rem, 5vw, 4.5rem);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    color: var(--text);
    border-color: rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.03);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    width: 100%;
    justify-content: center;
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-dim);
}

.btn-large {
    padding: 18px 36px;
    font-size: 1rem;
    width: 100%;
    justify-content: center;
}

/* Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
}

.stat-unit {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    opacity: 0.7;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

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

.robot-showcase {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.robot-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    opacity: 0.3;
    animation: pulse-glow 4s ease-in-out infinite;
}

.robot-3d { position: relative; z-index: 2; }

.robot-svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.5));
}

.robot-label {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-dim);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: -20px;
    position: relative;
    z-index: 2;
}

/* LED animation */
.led-strip { animation: led-pulse 2s ease-in-out infinite; }
.eye-ring { animation: eye-rotate 4s linear infinite; transform-origin: 200px 170px; }
.eye-dot { animation: eye-pulse 2s ease-in-out infinite; }
.sensor { animation: sensor-blink 3s ease-in-out infinite; }
.sensor:nth-child(2) { animation-delay: 0.5s; }
.sensor:nth-child(3) { animation-delay: 1s; }
.sensor:nth-child(4) { animation-delay: 1.5s; }

/* ============================================
   Ticker
   ============================================ */
.ticker {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    overflow: hidden;
    background: var(--bg-alt);
}

.ticker-track {
    display: flex;
    gap: 32px;
    animation: ticker 30s linear infinite;
    white-space: nowrap;
    width: max-content;
}

.ticker-track span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ticker-dot { color: var(--accent); font-size: 0.5rem; }

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 120px 0;
    position: relative;
}

.section-dark { background: var(--bg-alt); }

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 6px 14px;
    border-radius: 100px;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ============================================
   Features Grid
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: rgba(46,204,113,0.2);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.feature-icon {
    color: var(--accent);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

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

/* ============================================
   Models
   ============================================ */
.models-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.model-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
    position: relative;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.model-featured {
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(46,204,113,0.08) 0%, var(--surface) 40%);
}

.model-featured:hover {
    box-shadow: 0 20px 60px var(--accent-glow);
}

.model-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    background: rgba(255,255,255,0.05);
    padding: 4px 12px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.tag-featured {
    background: var(--accent-dim);
    color: var(--accent);
}

.model-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.model-price {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 12px;
    font-family: 'JetBrains Mono', monospace;
}

.model-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    line-height: 1.6;
}

.model-specs {
    list-style: none;
    margin-bottom: 28px;
}

.model-specs li {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

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

.spec-label { color: var(--text-muted); }
.spec-value { font-weight: 600; font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; }

/* ============================================
   Comparison Table
   ============================================ */
.compare-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.compare-table th,
.compare-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.compare-table th {
    background: var(--surface);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.compare-table td { background: var(--bg-alt); }
.compare-table tr:last-child td { border: none; }

.compare-highlight {
    background: rgba(46,204,113,0.05) !important;
    border-left: 2px solid var(--accent);
}

th.compare-highlight { color: var(--accent) !important; }

.check { color: var(--accent); font-weight: 700; }
.cross { color: #e74c3c; }
.partial { color: #f39c12; }

/* ============================================
   AI Section
   ============================================ */
.ai-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.ai-desc {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 40px;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.ai-feature {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.ai-feature-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 6px 10px;
    border-radius: 8px;
    min-width: 36px;
    text-align: center;
}

.ai-feature h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.ai-feature p {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* AI Brain Visual */
.ai-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-brain {
    position: relative;
    width: 360px;
    height: 360px;
}

.brain-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(46,204,113,0.15);
}

.ring-1 {
    inset: 0;
    animation: rotate-ring 20s linear infinite;
    border-style: dashed;
}

.ring-2 {
    inset: 40px;
    animation: rotate-ring 15s linear infinite reverse;
    border-color: rgba(46,204,113,0.25);
}

.ring-3 {
    inset: 80px;
    animation: rotate-ring 10s linear infinite;
    border-color: rgba(46,204,113,0.35);
}

.brain-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--accent);
    box-shadow: 0 0 40px var(--accent-glow);
}

.brain-data {
    position: absolute;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent);
    background: var(--surface);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid rgba(46,204,113,0.2);
    animation: float-data 4s ease-in-out infinite;
}

.data-1 { top: 20px; left: 50%; transform: translateX(-50%); }
.data-2 { right: 10px; top: 50%; transform: translateY(-50%); animation-delay: 1s; }
.data-3 { bottom: 20px; left: 50%; transform: translateX(-50%); animation-delay: 2s; }
.data-4 { left: 10px; top: 50%; transform: translateY(-50%); animation-delay: 3s; }

/* ============================================
   Testimonials
   ============================================ */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.testimonial-card:hover {
    border-color: rgba(46,204,113,0.15);
    transform: translateY(-2px);
}

.testimonial-stars {
    color: #f1c40f;
    font-size: 1rem;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-card > p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--accent-dim);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

.testimonial-author strong {
    display: block;
    font-size: 0.9rem;
}

.testimonial-author span {
    font-size: 0.75rem;
    color: var(--text-dim);
}

/* ============================================
   CTA
   ============================================ */
.section-cta { padding: 80px 0 120px; }

.cta-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 200px;
    background: radial-gradient(ellipse, var(--accent-dim), transparent 70%);
    opacity: 0.6;
}

.cta-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
}

.cta-desc {
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.cta-form {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
}

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

.form-input {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
    transition: var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

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

.form-textarea {
    resize: vertical;
    min-height: 80px;
    margin-bottom: 16px;
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23555570' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.875rem;
    color: var(--text-muted);
    max-width: 280px;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links h4 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--text-dim);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 0.8rem;
    color: var(--text-dim);
    transition: var(--transition);
}

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

/* ============================================
   Animations
   ============================================ */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

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

@keyframes pulse-glow {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.5; transform: translate(-50%, -50%) scale(1.1); }
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(30px, -20px); }
    66% { transform: translate(-20px, 20px); }
}

@keyframes ticker {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes led-pulse {
    0%, 100% { opacity: 0.6; stroke: #2ecc71; }
    50% { opacity: 1; stroke: #00ff88; }
}

@keyframes eye-rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes eye-pulse {
    0%, 100% { r: 6; opacity: 0.8; }
    50% { r: 8; opacity: 1; }
}

@keyframes sensor-blink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

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

@keyframes float-data {
    0%, 100% { opacity: 0.6; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(-5px); }
}

.data-1 { animation: float-data 4s ease-in-out infinite; }
.data-2 { animation: float-data 4s ease-in-out 1s infinite; }
.data-3 { animation: float-data 4s ease-in-out 2s infinite; }
.data-4 { animation: float-data 4s ease-in-out 3s infinite; }

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .hero { grid-template-columns: 1fr; text-align: center; padding-top: 100px; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { order: -1; }
    .robot-showcase { max-width: 350px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .models-grid { grid-template-columns: repeat(2, 1fr); }
    .models-grid .model-card:last-child {
        grid-column: 1 / -1;
        max-width: 400px;
        margin: 0 auto;
    }
    .ai-layout { grid-template-columns: 1fr; gap: 48px; }
    .ai-visual { order: -1; }
    .testimonials-grid { grid-template-columns: 1fr 1fr; }
    .testimonials-grid .testimonial-card:last-child {
        grid-column: 1 / -1;
        max-width: 500px;
        margin: 0 auto;
    }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }
    .hero { min-height: auto; padding-top: 100px; padding-bottom: 60px; }
    .hero-title { font-size: 2.4rem; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .stat-divider { display: none; }
    .features-grid { grid-template-columns: 1fr; }
    .models-grid { grid-template-columns: 1fr; }
    .models-grid .model-card:last-child { max-width: none; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .testimonials-grid .testimonial-card:last-child { max-width: none; }
    .compare-table th, .compare-table td { padding: 12px 16px; font-size: 0.8rem; }
    .cta-box { padding: 40px 24px; }
    .form-row { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
    .ai-brain { width: 280px; height: 280px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2rem; }
    .section { padding: 80px 0; }
    .section-title { font-size: 1.7rem; }
}