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

:root {
    --color-background: #F8F7F4;
    --color-background-secondary: #F0EDE9;
    --color-foreground: #1A1A1A;
    --color-foreground-secondary: #6B6B6B;
    --color-foreground-muted: #9B9B9B;
    --color-accent: #D4A574;
    --color-accent-hover: #C19660;
    --color-border: #E5E2DD;
    --color-border-light: #F0EDE9;
    --color-card: #FFFFFF;
    --color-card-hover: #FEFEFE;

    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-foreground);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(248, 247, 244, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border-light);
    transition: transform 0.3s ease-in-out, background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-foreground);
    letter-spacing: -0.025em;
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    color: var(--color-foreground-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-link:hover {
    color: var(--color-foreground);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-foreground);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hero {
    padding: calc(70px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, var(--color-background) 0%, var(--color-background-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    min-height: 600px;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-foreground);
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.025em;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-foreground-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--color-foreground);
    color: var(--color-background);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: #333;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-foreground);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-card);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.btn-icon {
    transition: var(--transition-fast);
}

.btn:hover .btn-icon {
    transform: translateX(2px);
}

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

.gradient-orb {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg,
            rgba(212, 165, 116, 0.3) 0%,
            rgba(212, 165, 116, 0.1) 50%,
            rgba(212, 165, 116, 0.05) 100%);
    border-radius: 50%;
    position: relative;
    animation: float 6s ease-in-out infinite;
    filter: blur(1px);
}

.gradient-orb::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 20%;
    width: 60%;
    height: 60%;
    background: linear-gradient(135deg,
            rgba(212, 165, 116, 0.2) 0%,
            rgba(212, 165, 116, 0.05) 100%);
    border-radius: 50%;
    animation: float 4s ease-in-out infinite reverse;
}

.gradient-orb::after {
    content: '';
    position: absolute;
    top: 10%;
    left: 10%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle,
            rgba(212, 165, 116, 0.1) 0%,
            rgba(212, 165, 116, 0.05) 50%,
            transparent 100%);
    border-radius: 50%;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.7;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.3;
    }
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-foreground);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.025em;
    text-rendering: optimizeLegibility;
    font-feature-settings: "kern" 1, "liga" 1;
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-foreground-secondary);
    line-height: 1.7;
}

.models {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-background);
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.model-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.model-card.featured {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.featured-badge {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: var(--color-accent);
    color: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.model-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.model-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-background);
    flex-shrink: 0;
}

.maxwell-icon {
    background: linear-gradient(135deg, #8B5CF6 0%, #A855F7 100%);
}

.davinci-icon {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.model-name {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-foreground);
    margin-bottom: var(--spacing-xs);
}

.model-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-foreground-muted);
    font-weight: 500;
}

.model-description {
    margin-bottom: var(--spacing-xl);
}

.model-description p {
    color: var(--color-foreground-secondary);
    line-height: 1.6;
}

.model-stats {
    margin-bottom: var(--spacing-xl);
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.stat-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-foreground-secondary);
    min-width: 80px;
}

.stat-bar {
    flex: 1;
    height: 8px;
    background-color: var(--color-border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.stat-fill {
    height: 100%;
    border-radius: var(--radius-sm);
    width: 0;
    transition: width 1s ease-out 0.3s;
    position: relative;
    overflow: hidden;
}

.model-card.visible .maxwell-speed {
    width: 90%;
}

.model-card.visible .maxwell-accuracy {
    width: 65%;
}

.model-card.visible .maxwell-cost {
    width: 12.5%;
}

.model-card.visible .davinci-speed {
    width: 60%;
}

.model-card.visible .davinci-accuracy {
    width: 95%;
}

.model-card.visible .davinci-cost {
    width: 75%;
}

.maxwell-speed {
    background: linear-gradient(90deg, #10B981 0%, #059669 100%);
}

.maxwell-accuracy {
    background: linear-gradient(90deg, #3B82F6 0%, #2563EB 100%);
}

.maxwell-cost {
    background: linear-gradient(90deg, #F59E0B 0%, #D97706 100%);
}

.davinci-speed {
    background: linear-gradient(90deg, #10B981 0%, #059669 100%);
}

.davinci-accuracy {
    background: linear-gradient(90deg, #3B82F6 0%, #2563EB 100%);
}

.davinci-cost {
    background: linear-gradient(90deg, #F59E0B 0%, #D97706 100%);
}

.stat-value {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-foreground);
    min-width: 80px;
    text-align: right;
}

.model-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.feature {
    font-size: var(--font-size-sm);
    color: var(--color-foreground-secondary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.features {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-background-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
}

.feature-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-background);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-foreground);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    color: var(--color-foreground-secondary);
    line-height: 1.6;
}

.cta {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-background);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-foreground);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.025em;
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--color-foreground-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.footer {
    background-color: var(--color-foreground);
    color: var(--color-background);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-background-secondary);
}

.footer-section p {
    color: var(--color-background-secondary);
    line-height: 1.6;
}

.footer-section a {
    display: block;
    color: var(--color-background-secondary);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-fast);
}

.footer-section a:hover {
    color: var(--color-background);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer-bottom p {
    color: var(--color-background-secondary);
    font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
        min-height: auto;
        padding-top: var(--spacing-xl);
    }

    .hero-title {
        font-size: var(--font-size-4xl);
    }

    .hero-visual {
        display: none;
    }

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

    .hero-buttons,
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .nav-toggle {
        display: none;
    }

    .nav-links {
        display: none;
    }

    .stat {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .stat-label,
    .stat-value {
        min-width: auto;
        text-align: left;
    }

    .stat-value {
        text-align: left;
        font-weight: 600;
    }

    .stat-bar {
        width: 100%;
    }

    .featured-badge {
        position: static;
        display: inline-block;
        margin-bottom: var(--spacing-md);
    }

    .model-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {

    .container,
    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .hero {
        padding: calc(70px + var(--spacing-2xl)) 0 var(--spacing-2xl);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .cta-title {
        font-size: var(--font-size-2xl);
    }

    .header {
        background-color: var(--color-background);
        backdrop-filter: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .gradient-orb,
    .gradient-orb::before {
        animation: none;
    }
}

.nav-link:focus,
.btn:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.model-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.02) 0%, rgba(212, 165, 116, 0.01) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    border-radius: var(--radius-xl);
}

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

::selection {
    background-color: rgba(212, 165, 116, 0.2);
    color: var(--color-foreground);
}

.model-card:focus-within {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.stat-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }

    100% {
        left: 100%;
    }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-background-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

@media print {

    .header,
    .footer,
    .hero-visual,
    .gradient-orb {
        display: none;
    }

    .hero {
        padding-top: var(--spacing-xl);
    }

    body {
        background: white;
        color: black;
    }

    .model-card,
    .feature-card {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #1A1A1A;
        --color-background-secondary: #2A2A2A;
        --color-foreground: #F8F7F4;
        --color-foreground-secondary: #B0B0B0;
        --color-foreground-muted: #808080;
        --color-card: #2A2A2A;
        --color-card-hover: #333333;
        --color-border: #404040;
        --color-border-light: #333333;
    }

    .header {
        background-color: rgba(26, 26, 26, 0.95);
    }

    .gradient-orb {
        background: linear-gradient(135deg, rgba(212, 165, 116, 0.2) 0%, rgba(212, 165, 116, 0.05) 50%, rgba(212, 165, 116, 0.02) 100%);
    }
}

#nav-favicon {
    height: 42px;
    width: 42px;
    display: inline-block;
    vertical-align: middle;
    border-radius: 0.75rem;
    margin-right: 5px;
}

#nav-name {
    display: inline-block;
    vertical-align: middle;
    font-size: 1.25rem;
    font-weight: bold;
}