:root {
    --bg-color: #050505;
    --text-main: #f5f5f7;
    --text-muted: #86868b;
    --text-dimmed: #515154;
    --accent: #ffffff;
    --accent-bg: #ffffff;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.25);
    --card-bg: rgba(255, 255, 255, 0.015);
    --card-bg-hover: rgba(255, 255, 255, 0.04);
    --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body, h1, h2, h3, h4, p {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    background-color: var(--bg-color);
}

body {
    margin: 0;
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255, 255, 255, 0.05), transparent),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.015), transparent 40%);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: var(--font-stack);
    line-height: 1.6;
    letter-spacing: -0.011em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    opacity: 0;
    animation: fadeInUp 0.8s var(--transition-smooth) forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2.5rem;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    background-color: rgba(5, 5, 5, 0.7);
    transition: background-color 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5.5rem;
}

.logo {
    font-weight: 700;
    letter-spacing: 2px;
    font-size: 1.1rem;
    color: var(--accent);
}

.logo .dot {
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 400;
    transition: color 0.2s ease;
}

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

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-block;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: -0.01em;
    transition: all 0.3s var(--transition-smooth);
    border-radius: 4px;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-bg);
    color: var(--bg-color);
    padding: 0.9rem 2.2rem;
    border: 1px solid var(--accent-bg);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.btn-secondary {
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 0.9rem 2.2rem;
    background-color: transparent;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.03);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.header-cta {
    padding: 0.6rem 1.4rem;
    font-size: 0.85rem;
}

/* Hero Section */
.hero {
    padding: 10rem 0 7rem 0;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

h1 {
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
    color: var(--accent);
}

h1 .light-weight {
    font-weight: 200;
    color: var(--text-muted);
}

.subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-muted);
    max-width: 700px;
    margin-bottom: 3.5rem;
    font-weight: 300;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

/* Services Section */
.services {
    padding: 8rem 0 6rem 0;
}

.divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin-bottom: 6rem;
    display: none;
}

.section-header {
    margin-bottom: 4rem;
}

.section-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    line-height: 1.6;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

h2 {
    font-size: clamp(2rem, 3.5vw, 2.5rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    color: var(--accent);
    line-height: 1.2;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 3rem 2.5rem;
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 350px;
    transition: all 0.4s var(--transition-smooth);
}

.card:hover {
    border-color: var(--border-hover);
    background-color: var(--card-bg-hover);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-num {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-dimmed);
    margin-bottom: 2rem;
}

.card:hover .card-num {
    color: var(--accent);
}

.card h3 {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 1.25rem;
    color: var(--accent);
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    flex-grow: 1;
}

.card-footer {
    margin-top: auto;
}

.card-link {
    text-decoration: none;
    color: var(--text-main);
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.3s ease;
}

.card-link .arrow {
    transition: transform 0.3s var(--transition-smooth);
}

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

.card:hover .card-link .arrow {
    transform: translateX(4px);
}

/* Approach Section */
.approach {
    padding: 6rem 0 8rem 0;
}

.approach-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.approach-desc {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 300;
    line-height: 1.7;
    margin-top: 1.5rem;
}

.approach-right {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

@media (min-width: 993px) {
    .approach-right {
        padding-top: 1.95rem; /* Aligns the first bullet point with the left column's H2 header */
    }
}

.approach-item {
    position: relative;
}

.approach-item::before {
    content: "";
    position: absolute;
    left: -1.75rem; /* Elegant hanging bullet in the column gutter */
    top: 0.5rem; /* Mathematically centered with the first line of h4 (1.15rem * 1.2 / 2 - 3px) */
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent);
    box-shadow: 0 0 8px var(--accent);
}

.approach-content h4 {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.approach-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.6;
}

/* Contact Section */
.contact {
    padding: 4rem 0 8rem 0;
}

.contact-card {
    position: relative;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 5rem 3rem;
    text-align: center;
    overflow: hidden;
}

.contact-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.contact-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.contact-content p {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 300;
    margin-bottom: 2.5rem;
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-muted);
    background-color: rgba(0, 0, 0, 0.3);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-container .logo {
    letter-spacing: 2px;
}

/* Mobile Responsive */
@media (max-width: 992px) {
    .approach-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .header-cta {
        display: none;
    }
    
    .nav-links {
        gap: 1.5rem;
    }

    .hero {
        padding: 8rem 0 5rem 0;
    }

    .card {
        padding: 2.5rem 2rem;
        min-height: auto;
    }

    .contact-card {
        padding: 4rem 2rem;
    }

    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        align-items: flex-start;
    }
}