:root {
    --bg: #f7f9fc;
    --surface: #ffffff;
    --section: #f1f4fb;
    --text: #071733;
    --muted: #5a647c;
    --accent: #2846ff;
    --accent-dark: #1025a6;
    --secondary: #07b6c7;
    --border: #dde4f3;
    --shadow: 0 18px 38px rgba(7, 23, 51, 0.08);
}

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

body {
    font-family: "Outfit", "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 1rem;
}

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

a {
    color: inherit;
}

.container {
    width: min(1200px, 90vw);
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 25px rgba(7, 23, 51, 0.05);
    z-index: 1000;
}

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

.logo {
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.04em;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--text);
}

.logo strong {
    color: var(--accent);
}

.logo .brand-mark {
    width: 40px;
    height: 40px;
}

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

.site-nav a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
}

.cta {
    border: 1px solid rgba(40, 70, 255, 0.4);
    padding: 0.6rem 1.2rem;
    border-radius: 999px;
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease;
}

.cta:hover {
    background: var(--accent);
    color: #fff;
}

section {
    padding: 4rem 0;
}

.hero {
    padding-top: 5.5rem;
    background: var(--surface);
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.hero-text h1 {
    font-size: clamp(2.4rem, 4vw, 3.6rem);
    line-height: 1.2;
}

.hero-text .lead {
    margin: 1.5rem 0;
    font-size: 1.1rem;
    color: var(--muted);
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
    font-weight: 700;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    border: none;
    border-radius: 999px;
    padding: 0.85rem 1.6rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 12px 24px rgba(40, 70, 255, 0.3);
}

.btn.ghost {
    border: 1px solid rgba(7, 23, 51, 0.15);
    color: var(--text);
}

.btn.full {
    width: 100%;
}

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

.hero-pillars {
    margin-top: 2rem;
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.hero-pillars div {
    flex: 1 1 150px;
    padding: 0.9rem 1.2rem;
    border-radius: 1.1rem;
    background: #fff;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    text-align: center;
    font-weight: 600;
}

.hero-pillars span {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    font-weight: 400;
}

.hero-card,
.about-card,
.list-card,
.lab-card,
.card,
.testimonial-grid blockquote,
.process .step,
.contact-form {
    background: var(--surface);
    padding: 1.8rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.hero-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
}

.hero-card ul,
.about-card ul,
.list-card ul,
.lab-card ol,
.lab .checklist,
.research .list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
}

.about,
.expertise,
.courses,
.research,
.success,
.process {
    background: var(--surface);
}

.consulting,
.lab,
.contact {
    background: var(--section);
}

.two-column {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.card-grid,
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.card h3 {
    margin-bottom: 0.8rem;
}

.card.highlight {
    border: 2px solid rgba(40, 70, 255, 0.2);
}

.card.accent {
    border-top: 4px solid var(--secondary);
    background: linear-gradient(150deg, #ffffff, #f0fffb);
}

.lab-card ol {
    counter-reset: steps;
    gap: 0.4rem;
}

.lab-card ol li {
    counter-increment: steps;
    padding-left: 1.2rem;
    position: relative;
}

.lab-card ol li::before {
    content: counter(steps)".";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 600;
}

.checklist li::before {
    content: "✔";
    color: var(--secondary);
    margin-right: 0.6rem;
}

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

.testimonial-grid blockquote {
    position: relative;
    font-style: italic;
    border-left: 4px solid var(--accent);
}

.testimonial-grid cite {
    display: block;
    margin-top: 1rem;
    font-style: normal;
    color: var(--muted);
    font-weight: 600;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.step span {
    display: inline-flex;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-info p,
.contact-info a {
    color: var(--text);
}

.contact-badge {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    background: rgba(40, 70, 255, 0.08);
    border-radius: 1rem;
    padding: 0.8rem 1.4rem;
    margin: 1.25rem 0;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    font: inherit;
}

.site-footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 -8px 24px rgba(7, 23, 51, 0.05);
}

.site-footer .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
}

.footer-branding {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}

.whatsapp-float {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25d366;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 25px rgba(37, 211, 102, 0.35);
    text-decoration: none;
}

.whatsapp-float svg {
    width: 26px;
    height: 26px;
    fill: #fff;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 768px) {
    .site-nav {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-pillars {
        flex-direction: column;
    }

    .site-header .container {
        padding: 0.75rem 0;
    }
}

.brand-mark {
    width: 48px;
    height: auto;
    display: block;
    object-fit: contain;
}

.hero-logo {
    width: 90px;
    align-self: center;
}

.badge-mark {
    width: 42px;
}

.footer-mark {
    width: 32px;
}

h2 {
    font-weight: 700;
}