:root {
    --color-background: #0f1115;
    --color-surface: #161922;
    --color-surface-alt: rgba(255, 255, 255, 0.04);
    --color-primary: #5b8def;
    --color-accent: #8e5bef;
    --color-text: #f5f7fa;
    --color-muted: rgba(245, 247, 250, 0.65);
    --color-border: rgba(255, 255, 255, 0.08);
    --gradient-primary: linear-gradient(135deg, rgba(91, 141, 239, 0.85), rgba(142, 91, 239, 0.85));
    --shadow-elevated: 0 24px 64px -40px rgba(22, 25, 34, 0.9);
    --shadow-soft: 0 16px 44px -28px rgba(11, 13, 20, 0.65);
    --max-content-width: 1120px;
    --transition: 220ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.7;
}

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

a:hover,
a:focus {
    color: var(--color-primary);
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: min(92%, var(--max-content-width));
    margin: 0 auto;
}

.section {
    padding: clamp(3rem, 7vw, 6rem) 0;
}

.eyebrow {
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: 0.76rem;
    color: var(--color-muted);
}

.section-heading {
    max-width: 720px;
    margin-bottom: 2.75rem;
}

.section-heading h2 {
    font-size: clamp(1.85rem, 5vw, 2.8rem);
    margin-top: 0.6rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-lead {
    color: var(--color-muted);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(16px);
    background: rgba(15, 17, 21, 0.85);
    border-bottom: 1px solid var(--color-border);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand h1 {
    font-size: 1.2rem;
    font-weight: 600;
}

.brand p {
    color: var(--color-muted);
    font-size: 0.9rem;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--gradient-primary);
    font-weight: 600;
}

.site-nav {
    display: flex;
    gap: 1.5rem;
    font-size: 0.95rem;
}

.site-nav a {
    color: var(--color-muted);
    transition: color var(--transition);
}

.site-nav a:hover,
.site-nav a:focus {
    color: var(--color-text);
}

.hero .container {
    display: grid;
    gap: clamp(2rem, 5vw, 4rem);
    grid-template-columns: minmax(0, 1fr) minmax(260px, 320px);
}

.hero h2 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    line-height: 1.15;
}

.hero-intro > p {
    margin-top: 1.25rem;
    color: var(--color-muted);
}

.hero-highlights {
    margin-top: clamp(2rem, 4vw, 3rem);
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.highlight {
    padding: 1.5rem;
    border-radius: 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.metric {
    font-size: 1.6rem;
    font-weight: 600;
}

.label {
    display: block;
    margin-top: 0.4rem;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.hero-card {
    padding: 2rem;
    border-radius: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.hero-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
}

.hero-card ul {
    display: grid;
    gap: 1rem;
    color: var(--color-muted);
}

.hero-card strong {
    color: var(--color-text);
    font-weight: 500;
}

.skills {
    background: radial-gradient(circle at top right, rgba(91, 141, 239, 0.12), transparent 55%);
}

.skills-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.skill-card {
    padding: 1.75rem;
    border-radius: 20px;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    transition: transform var(--transition), border-color var(--transition);
}

.skill-card:hover {
    transform: translateY(-6px);
    border-color: rgba(91, 141, 239, 0.45);
}

.skill-card h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.skill-card ul {
    display: grid;
    gap: 0.75rem;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.case-studies .case-study-grid {
    display: grid;
    gap: 1.75rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.case-study-card {
    padding: 2rem;
    border-radius: 24px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    display: grid;
    gap: 1rem;
}

.case-study-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
}

.case-study-card h3 {
    font-size: 1.25rem;
}

.tag {
    padding: 0.4rem 0.7rem;
    border-radius: 999px;
    background: rgba(91, 141, 239, 0.12);
    color: var(--color-primary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.case-study-card p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

.case-study-card .problem {
    color: var(--color-text);
}

.demos {
    background: radial-gradient(circle at 20% 20%, rgba(142, 91, 239, 0.12), transparent 60%);
}

.demo-gallery {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.demo-card {
    border-radius: 24px;
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition), border-color var(--transition);
}

.demo-card:hover {
    transform: translateY(-8px);
    border-color: rgba(142, 91, 239, 0.4);
}

.demo-card img {
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background: rgba(91, 141, 239, 0.12);
}

.demo-card figcaption {
    padding: 1.75rem;
    display: grid;
    gap: 0.8rem;
}

.demo-card h3 {
    font-size: 1.15rem;
}

.demo-card p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

.demo-card .meta {
    font-size: 0.85rem;
    color: rgba(245, 247, 250, 0.55);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.thought-leadership {
    background: rgba(255, 255, 255, 0.02);
}

.thought-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.thought-card {
    padding: 1.75rem;
    border-radius: 20px;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    display: grid;
    gap: 0.8rem;
}

.thought-card h3 {
    font-size: 1.1rem;
}

.thought-card p {
    color: var(--color-muted);
}

.thought-card a {
    font-size: 0.9rem;
    color: var(--color-primary);
    font-weight: 500;
}

.testimonial-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.testimonial {
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid var(--color-border);
    background: var(--color-surface-alt);
    color: var(--color-muted);
    font-style: italic;
    position: relative;
}

.testimonial::before {
    content: "\201C";
    position: absolute;
    top: -24px;
    left: 24px;
    font-size: 4rem;
    color: rgba(91, 141, 239, 0.25);
}

.testimonial footer {
    margin-top: 1.4rem;
    font-style: normal;
    color: var(--color-text);
    font-size: 0.9rem;
}

.testimonial .name {
    font-weight: 500;
}

.contact-card {
    border-radius: 28px;
    padding: clamp(2rem, 4vw, 3rem);
    background: var(--gradient-primary);
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    align-items: center;
    box-shadow: var(--shadow-elevated);
}

.contact-intro h2 {
    font-size: clamp(1.9rem, 5vw, 2.6rem);
    line-height: 1.2;
    margin: 0.75rem 0 1rem;
}

.contact-intro p {
    color: rgba(255, 255, 255, 0.78);
}

.contact-links {
    list-style: none;
    display: grid;
    gap: 1rem;
}

.contact-links li {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: 16px;
    background: rgba(15, 17, 21, 0.25);
}

.contact-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.contact-links a {
    font-weight: 500;
}

.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 0 3rem;
    color: var(--color-muted);
    font-size: 0.85rem;
    text-align: center;
}

@media (max-width: 960px) {
    .site-nav {
        display: none;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .section {
        padding: 2.5rem 0;
    }

    .hero-card,
    .skill-card,
    .case-study-card,
    .demo-card,
    .thought-card,
    .testimonial {
        padding: 1.5rem;
    }

    .contact-links li {
        flex-direction: column;
        align-items: flex-start;
    }
}