:root {
    --bg: #f7f5f2;
    --text: #111111;
    --muted: #5a5a5a;
    --line: #d6d0c7;
    --accent: #111111;
    --accent-contrast: #ffffff;
    --panel: #ffffff;
    --panel-alt: #f1ece6;
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
    --radius-lg: 28px;
    --radius-md: 18px;
    --radius-sm: 12px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Sora", "Work Sans", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

h2 {
    margin: 0 0 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: clamp(1.8rem, 3vw, 2.6rem);
}

h3 {
    margin: 0 0 0.6rem;
}

ul {
    padding-left: 1.2rem;
}

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

a {
    color: inherit;
}

.lab-shell {
    min-height: 100vh;
    background-image: linear-gradient(120deg, rgba(255, 255, 255, 0.7), rgba(247, 245, 242, 0.7)),
        repeating-linear-gradient(90deg, rgba(0, 0, 0, 0.035) 0 1px, transparent 1px 120px);
}

.lab-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: #0b0b0b;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
}

.lab-nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
}

.lab-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #ffffff;
}

.lab-brand-link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    text-decoration: none;
}

.lab-logo {
    height: 48px;
    width: auto;
    display: block;
}

.lab-ofs {
    height: 48px;
    width: auto;
    display: block;
}

.lab-menu {
    display: flex;
    gap: 1.5rem;
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.lab-menu a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.72);
}

.lab-menu a:hover {
    color: #ffffff;
}

.lab-cta {
    background: #ffffff;
    color: #0b0b0b;
    text-decoration: none;
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
}

.lab-section {
    padding: 4rem 2rem;
}

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

.lab-kicker {
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--muted);
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.lab-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 2.5rem;
    align-items: center;
    padding: 5rem 2rem;
}

.lab-hero h1 {
    font-size: clamp(2.6rem, 6vw, 4.8rem);
    line-height: 1.05;
    margin: 0 0 1rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

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

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

.lab-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.8rem;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.85rem;
    border: 2px solid var(--accent);
}

.lab-button.primary {
    background: var(--accent);
    color: var(--accent-contrast);
}

.lab-button.secondary {
    background: transparent;
    color: var(--accent);
}

.lab-hero-card {
    background: var(--panel);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--line);
}

.lab-hero-photo-only {
    border-radius: 0;
    overflow: visible;
}

.lab-hero-photo-only img {
    width: 100%;
    max-height: 980px;
    aspect-ratio: 5 / 4;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.lab-hero-caption {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    font-weight: 400;
    color: #6b6b6b;
    text-align: left;
}

.lab-hero-card h3 {
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.9rem;
}

.lab-hero-card ul {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0 0;
    display: grid;
    gap: 0.75rem;
}

.lab-hero-card li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 600;
}

.lab-pill-row {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.lab-pill {
    background: var(--panel-alt);
    border-radius: 999px;
    padding: 0.9rem 1.2rem;
    text-align: center;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.12em;
    font-size: 0.8rem;
}

.lab-step-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.lab-step-card {
    background: var(--panel);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.lab-step-card h3 {
    margin: 0.5rem 0 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.95rem;
}

.lab-step-number {
    font-weight: 800;
    font-size: 2.2rem;
    color: var(--muted);
}

.lab-video-tabs {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.lab-tab {
    border: 1px solid var(--line);
    padding: 0.6rem 1.2rem;
    border-radius: 999px;
    background: var(--panel);
    cursor: pointer;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
}

.lab-tab.active {
    background: var(--accent);
    color: var(--accent-contrast);
    border-color: var(--accent);
}

.lab-video-panel {
    display: none;
}

.lab-video-panel.active {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 1.5rem;
    align-items: center;
}

.lab-video-frame {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--line);
    background: #000000;
    aspect-ratio: 16 / 9;
}

.lab-video-frame iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.lab-video-frame video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.lab-video-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.lab-measure-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: center;
    background: var(--panel);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
}

.lab-measure-svg {
    width: 100%;
    background: var(--panel-alt);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.lab-measure-svg img {
    width: 100%;
    height: auto;
    display: block;
}

.lab-form {
    background: var(--panel);
    border-radius: var(--radius-lg);
    border: 1px solid var(--line);
    padding: 2.5rem;
    box-shadow: var(--shadow);
}

.lab-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}

.lab-form-group label {
    display: block;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    margin-bottom: 0.4rem;
}

.lab-form-group input,
.lab-form-group select,
.lab-form-group textarea {
    width: 100%;
    padding: 0.75rem 0.9rem;
    border-radius: 0.75rem;
    border: 1px solid var(--line);
    font-size: 0.95rem;
    font-family: inherit;
}

.lab-form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.lab-form-group.full {
    grid-column: span 2;
}

.lab-upload {
    border: 1px dashed var(--line);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    background: var(--panel-alt);
}

.lab-upload input[type="file"] {
    display: none;
}

.lab-upload-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent);
    color: var(--accent-contrast);
    padding: 0.6rem 1rem;
    border-radius: 999px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
    cursor: pointer;
}

.lab-form-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2rem;
    border-radius: 999px;
    border: none;
    background: var(--accent);
    color: var(--accent-contrast);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.85rem;
    cursor: pointer;
    margin-top: 1.5rem;
}

.lab-tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.lab-tech-card {
    background: var(--panel);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--line);
}

.lab-tech-card h3 {
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.9rem;
}

.lab-testimonials {
    position: relative;
}

.lab-testimonial-track {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(280px, 1fr);
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    scroll-snap-type: x mandatory;
}

.lab-testimonial-card {
    background: var(--panel);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--line);
    scroll-snap-align: start;
}

.lab-testimonial-card p {
    margin-top: 0;
}

.lab-testimonial-meta {
    font-weight: 700;
    margin-top: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.75rem;
}

.lab-reviews-attrib {
    margin: 0 0 1.5rem;
    color: var(--muted);
    font-weight: 600;
    font-size: 0.95rem;
}

.lab-reviews-attrib a {
    color: inherit;
    font-weight: 700;
}

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

.review-card {
    background: var(--panel);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    border: 1px solid var(--line);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.review-header {
    display: flex;
    gap: 0.85rem;
    align-items: center;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--panel-alt);
}

.review-name {
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.8rem;
}

.review-name a {
    color: inherit;
    text-decoration: none;
}

.review-name a:hover {
    text-decoration: underline;
}

.review-stars {
    letter-spacing: 2px;
    font-size: 0.85rem;
}

.review-text {
    margin-top: 0.9rem;
    color: var(--muted);
}

.review-time {
    margin-top: 0.85rem;
    color: var(--muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.7rem;
}

.lab-footer {
    padding: 3rem 2rem;
    border-top: 1px solid var(--line);
    text-align: center;
    background: #f5f2ed;
}

.lab-footer p {
    margin: 0;
    color: var(--muted);
}

.form-status {
    margin-top: 1rem;
    font-weight: 600;
}

.form-status.success {
    color: #1f6f3a;
}

.form-status.error {
    color: #b52b2b;
}

.form-status.info {
    color: #8a6d1f;
}

.form-progress {
    margin-top: 0.75rem;
    display: none;
    align-items: center;
    gap: 0.75rem;
}

.form-progress.on {
    display: flex;
}

.form-progress progress {
    width: 200px;
}

@media (max-width: 980px) {
    .lab-hero {
        grid-template-columns: 1fr;
    }

    .lab-video-panel.active,
    .lab-measure-card {
        grid-template-columns: 1fr;
    }

    .lab-form-grid {
        grid-template-columns: 1fr;
    }

    .lab-form-group.full {
        grid-column: span 1;
    }

    .lab-menu {
        display: none;
    }
}

@media (max-width: 640px) {
    .lab-nav {
        flex-direction: column;
        gap: 1rem;
    }

    .lab-hero {
        padding: 3.5rem 1.5rem;
    }

    .lab-pill-row {
        grid-template-columns: 1fr;
    }
}